Outrigger floor plate installation device, outrigger

Abstract

To provide an outrigger floor-plate installation device which can reduce a gap formed on a side face of a crane-mounted vehicle, and an outrigger equipped with the outrigger floor-plate installation device.SOLUTION: An outrigger 80, which is mounted on a crane-mounted vehicle 100 comprising a side guard SG, comprises: an expandable vertical outrigger box 82, and a floor-plate part 31 which contacts a ground surface during use of the outrigger 80. A grounding surface 31G of the floor-plate part 31, which is a surface facing the ground surface in a floor-plate installation attitude in which an attitude of the floor-plate part 31 is such an attitude that the floor-plate part 31 is located between an inner box and the ground surface, is located on a side face of the crane-mounted vehicle 100 together with the side guard SG in a floor-plate storage attitude in which the attitude of the floor-plate part 31 is such an attitude that a surface on a side opposite to the grounding surface 31G faces a side face of the outer box 83.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an outrigger floor plate installing device that is applicable to outriggers provided on crane-mounted vehicles such as trucks, and to an outrigger. [Background technology]

[0002] Crane-mounted vehicles such as trucks are equipped with outriggers to prevent the crane-mounted vehicle from tipping over during work using a crane, etc. As disclosed in Patent Documents 1 and 2, for example, there are outriggers that are provided on both the left and right sides of a base fixed to the vehicle frame of the truck. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-052705 A [Patent Document 2] JP 2010-222138 A Summary of the Invention [Problem to be solved by the invention]

[0004] Even if a vehicle equipped with a crane is classified as a small car before the crane is installed, the installation of a crane changes the classification to a standard car, so side guards must be installed on the sides. Large trucks, etc., must also be equipped with side guards. However, in a configuration in which outriggers are provided on the base of a truck, as in the configurations disclosed in Patent Documents 1 and 2, side guards with a divided configuration are arranged in front of and behind the outriggers. Therefore, a problem may arise in that the function of preventing entrapment is reduced due to gaps formed between the divided side guards and the outriggers, compared to side guards that are formed continuously between the front and rear wheels of the crane-mounted vehicle. In consideration of the above-mentioned problems, the present invention aims to provide an outrigger floor plate installation device and an outrigger that can improve the function of preventing entrapment even in a configuration in which the outrigger is arranged between divided side guards. [Means for solving the problem]

[0005] The outrigger floor plate installation device according to one aspect of the present invention is applicable to an outrigger mounted on a vehicle equipped with a side guard. The outrigger includes an outer box, an inner box, and a floor plate portion. The outer box is formed in a cylindrical shape, and its length direction is parallel to the height direction of the vehicle. The inner box is inserted into the outer box from one end to form a vertical outrigger box together with the outer box, and is displaced relative to the outer box. The floor plate portion contacts the ground when the outrigger is in use. The contact surface of the floor plate portion, which is a surface facing the ground in a floor plate installation position in which the floor plate portion is disposed between the inner box and the ground, is disposed on the side of the vehicle together with the side guard when the floor plate portion is in a floor plate storage position in which a surface of the floor plate portion opposite to the contact surface faces a side of the outer box.

[0006] An outrigger according to one aspect of the present invention is an outrigger mounted on a vehicle equipped with a side guard. The outrigger has an outer box and an inner box, and includes a vertical outrigger box that expands and contracts by displacing the inner box relative to the outer box, and an outrigger floor plate installation device. The outer box is formed in a cylindrical shape, with its length direction oriented parallel to the height direction of the vehicle. The inner box is inserted into the outer box from one end to form a vertical outrigger box together with the outer box, and is displaced relative to the outer box. Effect of the Invention

[0007] According to the outrigger floor plate installation device and outrigger of the present invention, it is possible to improve the function of preventing entrapment, even in a configuration in which the outrigger is arranged between divided side guards. [Brief description of the drawings]

[0008] [Figure 1] 1 is a side view of a vehicle-mounted crane equipped with an outrigger floor plate installing device according to an embodiment. FIG. [Diagram 2] FIG. 2 is a front view of the crane removed from the vehicle. [Diagram 3] FIG. 2 is a perspective view of the crane removed from the vehicle. [Figure 4] FIG. 2 is a front view of the outrigger floor plate installation device. [Diagram 5] FIG. 2 is a view of the outrigger floor plate installation device as seen from the outside. [Figure 6] FIG. [Figure 7] FIG. 7 is a view taken along line VII in FIG. [Figure 8] FIG. 7 is a view taken along line VIII in FIG. 6. [Figure 9] 7 is a view taken along line IX in FIG. 6. [Figure 10] FIG. 9 is an X-ray arrow view of FIG. 8. [Figure 11] 10 is a view taken along line XI in FIG. 8. [Figure 12-1] 13A to 13C are diagrams for explaining the flow of displacement of the floor plate unit during the floor plate installation operation. [Figure 12-2] 13A to 13C are diagrams for explaining the flow of displacement of the floor plate unit during the floor plate installation operation. [Figure 13] 13A and 13B are diagrams for explaining the operation of extending the vertical outrigger boxes when the floor plate unit is in a locked state. [Figure 14] 13A and 13B are diagrams for explaining a structure for changing a fixing position of the cam. [Figure 15] 13A and 13B are diagrams showing contact states between the arm plate and the boss and cam when the floor plate is in the stored position; [Figure 16]13A and 13B are diagrams illustrating a configuration of a sub-locking mechanism. [Figure 17] FIG. 13 is a diagram showing a modified example of the embodiment. [Figure 18] FIG. 13 is a diagram showing a modified example of the embodiment. [Figure 19] FIG. 13 is a diagram showing a modified example of the embodiment. [Figure 20] FIG. 13 is a diagram showing a modified example of the embodiment. [Figure 21] FIG. 13 is a diagram showing a modified example of the embodiment. [Figure 22] FIG. 13 is a diagram showing a modified example of the embodiment. [Figure 23] 23 is a cross-sectional view taken along line XX in FIG. 22. [Figure 24] 24 is a cross-sectional view taken along line YY in FIG. 23. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, a crane-mounted vehicle, which is one embodiment of the outrigger floor plate installation device and the work vehicle equipped with outriggers according to the present invention, will be described with reference to the drawings as appropriate. Note that the drawings are schematic. Therefore, it should be noted that the relationship and ratio between thickness and planar dimensions may differ from the actual ones, and the drawings may include parts with different dimensional relationships and ratios. In addition, the embodiments shown below are examples of devices and methods for embodying the technical idea of ​​the present invention, and the technical idea of ​​the present invention does not specify the materials, shapes, structures, arrangements, etc. of the components to the embodiments described below.

[0010] (Embodiment) (composition) A crane-mounted vehicle 100 equipped with an outrigger floor plate installing device 1 (hereinafter, may be referred to as "floor plate installing device 1") includes a vehicle body 101 and a crane 105, as shown in FIG. In the embodiment, as shown in FIG. 1, the vehicle body 101 is a truck. In the following description and drawings, the direction in which the crane-mounted vehicle 100 moves forward (the direction in which the vehicle moves with the shift selected in the D range or the like) may be referred to as "forward". Similarly, in the following description and drawings, the direction in which the crane-mounted vehicle 100 moves backward (the direction in which the vehicle moves with the shift selected in the R range) may be referred to as "rear". In the following description and drawings, the "left side" refers to the left side of the driver who drives the crane-mounted vehicle 100, and the "right side" refers to the right side of the driver who drives the crane-mounted vehicle 100. Therefore, in the following description and drawings, the "left side view" refers to the viewpoint of the driver who drives the crane-mounted vehicle 100 as seen from the left side, and the "right side view" refers to the viewpoint of the driver who drives the crane-mounted vehicle 100 as seen from the right side. In the following description, the "left side view" and the "right side view" may be collectively referred to as "side view".

[0011] The vehicle body 101 includes a loading platform 102, a cab 103, a chassis frame 104, and side guards SG (side bumpers). Therefore, the crane-equipped vehicle 100 corresponds to a vehicle that includes side guards SG. On the loading platform 102, for example, cargo (building materials, etc.) to be suspended by a crane 105 is placed. The operator of the crane-equipped vehicle 100 and other personnel sit in the operator's cab 103. The chassis frame 104 forms the framework of the vehicle body 101 .

[0012] The side guards SG are disposed on the right and left sides of the vehicle body 101 between the front wheels FW and rear wheels RW of the vehicle body 101, and are formed using pipes. Note that the configuration of the side guards SG is not limited to a configuration formed using pipes, and may be formed, for example, in a plate shape. Also, in FIG. 1, the shape of the side guards SG is illustrated in a simplified form. In the embodiment, as an example, a case will be described in which the side guard SG includes a front side guard FSG and a rear side guard RSG. The front side guard FSG is disposed between the front wheels FW and the crane 105 in a side view. The rear side guard RSG is disposed between the crane 105 and the rear wheels RW. The ground clearance of the front side guard FSG and the rear side guard RSG is, for example, 650 mm or more at the upper edge and 450 mm or less at the lower edge.

[0013] The crane 105 is mounted on the chassis frame 104 . The crane 105 also includes a base 91, a column 92, a boom 93, a hook 94, and various actuators (not shown). The base 91 is formed in a rectangular cylindrical shape and is provided with an outrigger 80 . The column 92 is rotatably mounted on the base 91 . The boom 93 is an extendable boom, and is attached to the upper end of the column 92 so as to be able to rise and fall freely. The tip side of a wire rope 106 is fixed to the hook 94. The wire rope 106 is wound from the base end side around a winch (not shown) provided on the column 92. The tip side of the wire rope 106 is unwound from the winch and placed at the tip of the boom 93, and is further fixed to the hook 94. As a result, the hook 94 is suspended from the tip of the boom 93.

[0014] The various actuators include actuators for rotating the column 92 (boom 93), raising and lowering the boom 93, hoisting and lowering the hook 94 by a winch, and extending and retracting the outriggers 80. The various actuators are operated by being individually supplied with pressure oil from a hydraulic supply source (not shown) provided in the vehicle body 101 via a switching control valve device.

[0015] (Outrigger) The outrigger 80 is mounted on a crane-mounted vehicle 100 equipped with a side guard SG, and as shown in Figs. 2 and 3, includes a pair of left and right lateral outrigger boxes 81, a pair of left and right vertical outrigger boxes 82, and a floor plate installation device 1. Note that in Fig. 2, the configuration of the outrigger 80 is omitted. In addition, in the drawings and the following description, the vertical outrigger box 82 arranged on the left side of the pair of left and right vertical outrigger boxes 82 may be referred to as the "left vertical outrigger box 82L". Similarly, in the drawings and the following description, the vertical outrigger box 82 arranged on the right side of the pair of left and right vertical outrigger boxes 82 may be referred to as the "right vertical outrigger box 82R".

[0016] The lateral outrigger box 81 is formed in a rectangular cylindrical shape. The base end side of the lateral outrigger box 81 is inserted into the inside of the base 91. This allows the lateral outrigger box 81 to slide relative to the base 91 in the left and right directions. In addition, the lateral outrigger box 81 can be slidably moved to the extended position H or the stored position K.

[0017] The extended position H is a position where the lateral outrigger box 81 extends from the base 91 to the right and left of the vehicle body 101. The stored position K is a position where the lateral outrigger box 81 is stored inside the base 91. In the embodiment, a case will be described in which the operator slides and moves the lateral outrigger box 81 by grabbing a gripping portion (not shown) provided on the outrigger 80 with his or her hand and performing a pulling or pushing motion. The vertical outrigger box 82 is arranged at the tip side of the horizontal outrigger box 81. The vertical outrigger box 82 also includes an outer box 83, an inner box 84, a hydraulic cylinder (not shown), and a float 85.

[0018] The outer box 83 is formed in a square cylindrical shape and is fixed to the tip of the lateral outrigger box 81. The longitudinal direction of the outer box 83 is perpendicular to the longitudinal direction of the lateral outrigger box 81 when viewed from the front or rear. The four outer peripheral surfaces of the outer box 83 are parallel to the traveling direction and left-right direction of the vehicle body 101. Therefore, the longitudinal direction of the outer box 83 is oriented parallel to the height direction of the crane-mounted vehicle 100.

[0019] The inner box 84 is formed in a rectangular tubular shape with an outer diameter smaller than that of the outer box 83, and forms the vertical outrigger box 82 together with the outer box 83. One end of the inner box 84 is inserted inside the outer box 83. This allows the inner box 84 to slide vertically relative to the outer box 83.

[0020] The hydraulic cylinder is disposed inside the outer box 83 and the inner box 84 with the inner box 84 inserted inside the outer box 83 . One end of the hydraulic cylinder is fixed to an upper part of the outer box 83 inside the outer box 83. The other end of the hydraulic cylinder is fixed to a lower part of the inner box 84 inside the inner box 84. Therefore, when the hydraulic cylinder is extended or retracted, the inner box 84 slides up and down. In other words, by displacing the inner box 84 relative to the outer box 83, the vertical outrigger box 82 extends or retracts. In other words, the hydraulic cylinder provided in the vertical outrigger box 82 forms an actuator, among the various actuators provided in the crane 105, that displaces the inner box 84 relative to the outer box 83, thereby extending and contracting the vertical outrigger box 82. The float 85 is, for example, a plate-like member formed in a quadrilateral shape. The float 85 is attached to the other end of the inner box 84 with the thickness direction of the float 85 oriented parallel to the length direction of the inner box 84.

[0021] (Bottom plate installation device) The floor plate installing devices 1 are provided on each of the pair of left and right vertical outrigger boxes 82. That is, the crane-equipped vehicle 100 is equipped with the pair of floor plate installing devices 1 on the left and right. As shown in FIGS. 4 and 5, the floor plate installation device 1 includes a floor plate unit 2, an outer side guide mechanism 4, a ground side guide mechanism 5, a locking mechanism 6, a first cushion 7, and a pair of second cushions 8.

[0022] (Plate unit) The floor plate unit 2 includes an arm 20 and a floor plate 30, as shown in FIGS. <Arm> The arm 20 is formed using high tensile steel such as "HT590" for example. This is because the arm 20 is larger in size than the other components and receives the thrust generated when the outriggers 80 are operated and the weight of the crane-mounted vehicle 100 when the outriggers 80 are in use, so it is desirable for the arm 20 to be lightweight and have high strength. The arm 20 also includes a pair of arm plates 21 . The pair of arm plates 21 are connected by a connecting rod 28 formed in a cylindrical shape, and face the outer box 83 along the front or rear when the floor plate portion 31 is in the floor plate storage position. The floor plate storage position is a position in which the floor plate 30 is stored, as shown in FIG. 2 when the floor plate installation device 1 is in the storage position K. Further, the pair of arm plates 21 are formed in a shape that extends upward as it moves from the inside to the outside of the vehicle body 101 when the position of the floor plate portion 31 is the floor plate storage position.

[0023] As shown in Figures 4 and 6, each arm plate 21 has a tip portion 21D, a base end portion 21P, a protrusion portion 22, a bent portion 23, a notch portion 24, a hook portion 25, a cam contact surface 26, and an axis hole 27. The tip portion 21D forms an end portion of the arm plate 21 that is located downward when the position of the floor plate portion 31 is in the floor plate storage position. The base end portion 21P forms an end portion of the arm plate 21 that is located at the upper side when the position of the floor plate portion 31 is in the floor plate storage position.

[0024] The protrusion 22 is disposed at a position protruding from the center of the arm plate 21 to the outside of the vehicle body 101 (the side away from the vehicle body 101) when the floor plate part 31 is in the floor plate storage position. The protrusion 22 is formed in a trapezoidal shape when viewed from the front or rear. The bent portion 23 constitutes a portion on the side from the protruding portion 22 toward the base end portion 21P, and is formed by a portion bent toward the inside of the vehicle body 101.

[0025] The notch 24 is disposed at the boundary between the bent portion 23 and the protruding portion 22, and is formed in a V-shaped notch. The position of the notch 24 is set at a position where the inner peripheral surface of the notch 24 clamps the outer peripheral surface of the pipe 54 when the position of the floor plate portion 31 changes from the floor plate storage position to the floor plate installation position. The floor plate installation position is a position in which the floor plate 30 is installed, as shown in Fig. 2 when the floor plate installation device 1 is in the extended position H. The position of the floor plate part 31 in the floor plate installation position is a position in which the floor plate part 31 is disposed between the inner box 84 and the ground. Hook portion 25 constitutes the portion extending from bent portion 23 toward tip portion 21D, and is formed in a hook shape that opens on the side opposite cutout portion 24. Moreover, the hook portion 25 has a pocket portion 25a. The pocket 25a is formed by cutting out a V-shape that forms the opening of the hook portion 25.

[0026] As shown in FIG. 4, the cam contact surface 26 forms a surface of the arm plate 21 that comes into contact with the cam 52. In addition, the cam contact surface 26 is formed by a surface that continues from a position on the protrusion 22 that is closer to the tip 21D (the dashed line position shown on the upper side in Figure 6) to a position midway up to the tip 21D (the dashed line position shown on the lower side in Figure 6). The cam contact surface 26 has a shape provided with a convex portion 26a and a concave portion 26b, as shown in FIG. 6, the protrusion 26a is formed in a shape that protrudes toward the floor plate part 31 in the floor plate storage position. The protrusion 26a is provided on a portion of the cam contact surface 26 that includes the tip portion 21D when viewed in the thickness direction of the arm plate 21 and continues to the vicinity of the midpoint of the cam contact surface 26. The specific position where the convex portion 26a is formed is set to a position where the cam contact surface 26 comes into contact with the cam 52 when the position of the floor plate portion 31 changes between a preset intermediate position and the floor plate storage position.

[0027] The intermediate position is set to a position in which the angle of the floor plate portion 31 is 45° when viewed from the front or rear, between the floor plate storage position and the floor plate installation position, for example. In addition, the inclination angle of the convex portion 26a is set at an angle such that, for example, when the position of the floor plate portion 31 is changed from the floor plate installation position to the floor plate storage position, when the vertical outrigger box 82 is in its most contracted state, the direction of the force acting from the cam 52 at the contact point between the cam 52 and the arm 20 does not become a dead point. The angle at which the direction of the force acting from the cam 52 at the contact point between the cam 52 and the arm 20 does not become a dead point is, for example, an angle that does not pass through the center BC of the boss 42, which is the center of the moment, as shown in Figure 15(b). Note that in Figure 15(b), the direction of the force acting from the cam 52 at the contact point between the cam 52 and the arm 20 is indicated by the symbol "FC".

[0028] Furthermore, the inclination angle of the convex portion 26a is set to an angle such that, for example, when the attitude of the floor plate portion 31 is changed from the floor plate installation attitude to the floor plate storage attitude, the acting force required to support the weight of the floor plate 30 when the vertical outrigger boxes 82 are in the most contracted state is equal to or less than the force obtained by decomposing the maximum retraction thrust vector generated when the vertical outrigger boxes 82 are stored in the vertical direction of the cam contact surface 26, as shown in Fig. 15(b). Note that in Fig. 15(b), the directions of the forces obtained by decomposing the maximum retraction thrust vector generated when the vertical outrigger boxes 82 are stored in the tangential direction of the cam contact surface 26 are indicated by the symbols "B1" and "B2".

[0029] 6, the recess 26b is formed in a recessed shape on a surface facing the floor plate portion 31 in the floor plate storage posture. In addition, the recess 26b is provided in a portion farther from the tip portion 21D than the protrusion 26a when viewed in the thickness direction of the arm plate 21. A specific position for forming the recess 26b is set to a position where the cam contact surface 26 comes into contact with the cam 52 when the posture of the floor plate portion 31 changes between the intermediate posture and the floor plate installation posture. The shaft hole 27 is formed in a circular shape in the tip portion 21D. In addition, both ends of a connecting rod 28 are fixed to the shaft hole 27. The connecting rod 28 is disposed inward of the vertical outrigger box 82 in the floor plate storage position.

[0030] <Sill plate> The base plate 30 includes a base plate portion 31, a bracket portion 32, and a metal receiving portion 35. (Bottom plate part) The base plate portion 31 is formed of high tensile steel such as "HT590" as with the arm 20. This is because the base plate portion 31 is larger in size than the other components and receives the thrust generated when the outriggers 80 are operated and the weight of the crane-mounted vehicle 100 when the outriggers 80 are in use, and therefore it is desirable for the base plate portion 31 to be lightweight and have high strength. In addition, the floor plate portion 31 is disposed between the front side guard FSG and the rear side guard RSG in the floor plate storage position as shown in Fig. 7. Note that, for the sake of explanation, Fig. 7 shows the floor plate portion 31, the front side guard FSG, and the rear side guard RSG in a simplified manner.

[0031] In the floor plate storage position, the surface of the floor plate portion 31 opposite the ground contact surface 31G, which is the surface that faces the ground in the floor plate installation position, faces the side of the outer box 83. The floor plate portion 31 is formed using a metal material such as high tensile steel, for example. However, the floor plate portion 31 may be formed from other materials such as wood, waste plastic, etc., without being limited to metal materials. As shown in Figs. 8 and 9, the floor plate portion 31 has a trapezoidal plate shape when viewed from the side in the floor plate storage position. Specifically, the shape of the floor plate portion 31 is a combination of an upper floor plate portion 31u that forms the upper side of the floor plate portion 31 and a lower floor plate portion 31d that forms the lower side of the floor plate portion 31.

[0032] The shape of the floor plate upper portion 31u is a trapezoid whose base is longer than its top when viewed in the thickness direction of the floor plate portion 31 in the floor plate storage position. Further, the floor plate upper portion 31u is formed with two floor plate side cutout portions 31c. The two floor plate cutouts 31c are formed at the upper end (the end farther from the floor plate lower part 31d) of the floor plate upper part 31u. The shape of the floor plate cutout 31c is such that a part of the floor plate upper part 31u is cut out in a square shape when viewed from the thickness direction of the floor plate part 31.

[0033] The shape of the floor plate lower part 31d is a quadrilateral (rectangle) when viewed in the thickness direction of the floor plate part 31 in the floor plate storage position. The lower end of the upper floor plate 31u (the end on the lower floor plate 31d side) and the upper end of the lower floor plate 31d (the end on the upper floor plate 31u side) are the same length and are continuous with each other. Therefore, when viewed from the thickness direction of the floor plate portion 31 in the floor plate storage position, the upper side is a trapezoid whose base length is longer than the top side, and the lower side is a quadrilateral.

[0034] Further, the base plate portion 31 is formed with two bent portions 31R. The two bending portions 31R are formed by bending a portion of the upper floor plate 31u which forms the side end of the floor plate portion 31 when viewed from the side in the floor plate storage position, and a portion of the lower floor plate 31d which forms the side end of the floor plate portion 31 when viewed from the side in the floor plate storage position, more toward the inside of the vehicle body 101 than the other portions. Since the floor plate portion 31 has the two bent portions 31R, the floor plate portion 31 has the function required of the side guard SG of preventing pedestrians and the like from being caught in the floor plate portion 31. Moreover, the floor plate section 31 is disposed on the outermost side among the members constituting the floor plate installation device 1 in the floor plate storage position. A ground contact surface 31G of the floor plate portion 31 is arranged parallel to the outer surfaces of the front side guard FSG and the rear side guard RSG when viewed from the front and rear in the floor plate storage position.

[0035] That is, the contact surface 31G of the floor plate portion 31 is disposed on the side of the crane-mounted vehicle 100 together with the side guard SG in the floor plate storage position. Therefore, in the floor plate storage position, the floor plate portion 31 serves both to avoid and prevent interference between pedestrians and auxiliary equipment such as the battery, and to function as a side guard SG which is essential depending on the vehicle class. Furthermore, a ground cushion 37 is attached to the ground surface 31G by means of adhesion or the like. The ground cushion 37 is made of an elastic material such as rubber, and is formed in a plate shape.

[0036] The area of ​​the floor plate portion 31 is larger than the area of ​​the float 85. In the floor plate installation posture, the floor plate portion 31 overlaps with the float 85. In the floor plate installation posture, the position (area) where the float 85 overlaps with the floor plate portion 31 is set only in the floor plate lower portion 31d. Therefore, the float 85 contacts only the lower part 31d of the floor plate portion 31 in the floor plate installation position.

[0037] (Bracket part) The bracket portion 32 is fixed by welding or the like to a surface of the floor plate portion 31 that comes into contact with the float 85 in the floor plate installation position (the inner surface of the floor plate portion 31). The bracket portion 32 is disposed at a position on the inner surface of the floor plate portion 31 close to the lower floor plate portion 31d of the upper floor plate portion 31u, and is thereby disposed at a position close to the center of the floor plate portion 31. Further, the bracket portion 32 is provided with a bracket side cutout portion 32h. The bracket side cutout portion 32h is formed in a shape in which a part including the center of the side of the bracket portion 32 that is positioned upward when the floor plate is in the stored position is cut out. Additionally, the bracket side cutout portion 32h is formed to have a size such that it does not come into contact with the first cushion 7 when in the floor plate storage position.

[0038] Further, the bracket portion 32 is provided with a pair of arm mounting base portions 33 . The pair of arm mounting base portions 33 are formed at positions sandwiching the pair of arm plates 21 therebetween. Further, each of the pair of arm attachment base portions 33 is formed with a through hole (not shown) for inserting the arm attachment pin 34 therethrough. The arm mounting base portion 33 may be integrally formed with the bracket portion 32. The pair of arm mounting pins 34 are inserted into through holes formed in the pair of arm mounting base portions 33 and through holes (not shown) formed in the bent portion 23, respectively. Both ends of the arm mounting pin 34 are treated to prevent it from coming off, at the through holes formed in the pair of arm mounting base portions 33 and on the outside of the shaft hole 27. As described above, the arm 20 is rotatably attached to the bracket portion 32 by the arm attachment pin 34 .

[0039] As shown in FIGS. 10 and 11, a torsion spring 36 is attached to each of the pair of arm mounting pins 34. The torsion spring 36 is a double torsion type spring. The central axis of the torsion spring 36 overlaps with the central axis of the arm attachment pin 34. Moreover, the torsion spring 36 has two coil portions 36a. The coil portion 36a is formed in a spiral shape. At both ends of the coil portion 36a, an arm portion (not shown) is formed extending in a tangential direction. The two arm portions are disposed in a state of pressing the base plate portion 31. The two coil portions 36a are connected by a connecting portion (not shown) that extends in the tangential direction of the coil portions 36a.

[0040] The force of the torsion spring 36 pressing the floor plate part 31 acts in a direction that rotates the floor plate part 31 about the arm mounting pin 34 so that the floor plate lower part 31d always approaches the outer box 83. In other words, the floor plate part 31 will not rotate so that the floor plate lower part 31d moves away from the outer box 83 unless a torque exceeding the force of the two torsion springs 36 pressing the floor plate part 31 is applied. Therefore, in the floor plate storage position, the lower end of the floor plate portion 31 rotates inward, so that it always approaches the vertical outrigger box 82. In addition, in the floor plate installation position, the tip of the floor plate portion 31 is pushed in a direction that bounces upward, so that the position of the floor plate portion 31 becomes horizontal by balancing with the weight of the floor plate 30 itself.

[0041] (Receiving bracket part) The receiving metal part 35 includes two reinforcing plate parts 35a and one rod part 35b. The reinforcing plate portion 35a is formed in a U-shaped plate shape when viewed in the thickness direction of the floor plate portion 31. In addition, the two reinforcing plate portions 35a are each arranged around the floor plate side cutout portion 31c when viewed in the thickness direction of the floor plate portion 31, and are fixed to the inner surface of the floor plate portion 31 by welding or the like. As a result, the reinforcing plate portion 35a functions as a member that reinforces the portion of the floor plate portion 31 where the floor plate-side cutout portion 31c is formed.

[0042] The rod portion 35b is formed in a cylindrical shape with a diameter of, for example, about 8 mm. Moreover, the rod portion 35b is fixed to the two reinforcing plate portions 35a by welding, etc. Specifically, one rod portion 35b is fixed to the two reinforcing plate portions 35a formed in a U-shape at a position where a total of four parallel sides are continuous. The position at which the rod portion 35b is fixed to the two reinforcing plate portions 35a is a position that ensures a gap in the floor plate side cutout portion 31c.

[0043] (Outer guide mechanism) As shown in Figures 4, 5 and 12-2(e), the outer guide mechanism 4 includes an outer bracket 41, a pair of bosses 42, and a pair of sliding plates 43. Note that Figure 12 shows the floor plate installation device 1 as viewed from the front side. The outer bracket 41 includes a pair of sliding plate attachment portions 41a and a connecting plate portion 41b. The sliding plate attachment parts 41a are formed in a trapezoidal plate shape when viewed from the front or rear. The pair of sliding plate attachment parts 41a are disposed on the inside of the surface of the outer box 83 viewed from the front and the surface of the outer box 83 viewed from the rear, respectively, at the lower end side of the outer box 83. The sliding plate attachment parts 41a are fixed to the outer box 83 by, for example, welding. The connecting plate portion 41b is formed in a plate shape and is disposed facing the outer surface of the outer box 83. The connecting plate portion 41b also connects the pair of sliding plate attachment portions 41a. The connecting plate portion 41b is further fixed to the outer box 83 by, for example, welding.

[0044] The pair of bosses 42 are formed in a cylindrical shape. The pair of bosses 42 protrude forward and rearward, respectively, from the pair of sliding plate attachment portions 41a at positions lower than the portions connected by the connecting plate portions 41b. The sliding plate 43 is made of a synthetic resin material such as "CN-NB". The pair of sliding plates 43 are disposed above the bosses 42 with respect to the pair of sliding plate attachment portions 41a, respectively. In addition, the pair of sliding plates 43 are formed into a rectangular plate shape when viewed from the front or rear, and are fixed to the sliding plate mounting portion 41a, for example, by screws, in an orientation in which the longitudinal direction faces downward from the outside to the inside when viewed from the front or rear.

[0045] Furthermore, each of the pair of sliding plates 43 has an arm contact surface 43a and an inclined surface 43s, as shown in FIG. 14(b) and FIG. The arm contact surface 43a is in contact with the surfaces of the pair of arm plates 21 that face each other. The inclined surface 43s is formed below the arm contact surface 43a, and is inclined downward as it moves away from the arm plate 21.

[0046] (Ground side guide mechanism) As shown in Figures 4, 5 and 13(a), the ground side guide mechanism 5 includes a ground side bracket 51, a pair of cams 52, a pair of bolts 53, and a pipe 54. Note that Figure 13(a) shows a part of the vertical outrigger box 82 in the floor plate installation position and the entire floor plate installation device 1 as viewed from the front side. The ground side bracket 51 is disposed at a position facing the outer box when the base plate portion 31 is in the base plate storage position, and includes an attachment plate portion 51a and a pair of protruding plates 51b. The mounting plate portion 51a is formed in a C-shape in a plan view. The mounting plate portion 51a has an opening facing outward and is fixed onto the float 85 by welding or the like with a part of the inner box 84 sandwiched between the mounting plate portion 51a and the opening.

[0047] The pair of protruding plates 51b are formed in a shape that protrudes upward from the front and rear ends of the mounting plate portion 51a, respectively. The protruding plates 51b are formed, for example, by bending or welding. Further, the protruding plates 51b are formed with through holes (not shown) for inserting the bolts 53. Furthermore, a protrusion (not shown) that protrudes toward the arm 20 is formed on a portion of the protruding plate 51b that faces the arm 20 in order to prevent the arm 20 from coming off the pair of protruding plates 51b.

[0048] As shown in Figures 14(a) and 14(b), the pair of cams 52 are each formed in a cylindrical shape. Furthermore, the pair of cams 52 are formed with bolt holes (not shown) for fixing the cams 52 to the ground side bracket 51 at positions eccentric to the center of the cams 52. Note that Figure 14(a) shows the vertical outrigger box 82 in the floor plate storage position and a part of the floor plate installation device 1 as viewed from the front side. Also, Figure 14(b) is a side view of a part of Figure 14(a). The position at which the bolt hole formed in the cam 52 is eccentric from the center of the cam 52 is determined to be a position at which it is possible to adjust the gap between the cam 52 and the boss 42 when the vertical outrigger box 82 is in the most contracted state by rotation of the cam 52.

[0049] The reason why the configuration is capable of adjusting the gap between the cam 52 and the boss 42 when the vertical outrigger box 82 is in the most retracted state is as follows. Because the cam 52 determines the storage position of the floor plate portion 31 via the arm 20, the relative position of the cam 52 and the boss 42 is important when the vertical outrigger box 82 is in the most retracted state. For this reason, the gap between the cam 52 and the boss 42 is adjustable to allow the storage position of the floor plate portion 31 to be adjusted when the storage position of the floor plate portion 31 changes due to assembly errors or wear.

[0050] Furthermore, by adjusting the cam 52, the floor plate portion 31 is set to a preset position before it reaches the floor plate storage position. The preset position before the floor plate storage position is set to, for example, a position in which the angle between the outer box 83 and the floor plate portion 31 is 30° when viewed from the front or rear. In addition, each of the pair of cams 52 is fixed to the convex plate 51b by inserting a bolt 53 into the through hole and the bolt hole from the outside of the convex plate 51b, with the bolt hole overlapping the through hole of the convex plate 51b on the inside of the convex plate 51b.

[0051] The bolt 53 is, for example, a bolt having a hexagonal socket formed in the head and a male screw formed on the outer diameter surface. Furthermore, if the rotation direction for tightening bolt 53 coincides with the rotation direction of cam 52 when reducing the gap between cam 52 and boss 42, it becomes easy to adjust the gap between cam 52 and boss 42. For this reason, a left-handed female thread is formed on the inner diameter surface of the bolt hole formed in cam 52 located on the right side when viewed from the outside. In addition, a right-handed female thread is formed on the inner diameter surface of the bolt hole formed in cam 52 located on the left side when viewed from the outside. As a result, the torque that cams 52 receive from arm 20 during the operation of storing floor plate 30 is in the direction of tightening bolt 53 for both cam 52 located on the right side as viewed from the outside and cam 52 located on the left side as viewed from the outside. Therefore, the female thread formed in the bolt hole and the male thread formed on bolt 53 function to prevent bolt 53 from loosening.

[0052] The pipe 54 is fixed to the pair of protruding plates 51b by welding or the like with its longitudinal direction facing the front-rear direction. In order to make it possible to hold the floor plate unit 2 on the float 85 in a stable state, the arm mounting pin 34 is formed so that the movable range within which the floor plate part 31 can rotate with respect to the arm 20 is, for example, an angle shown by "α" in Fig. 13(b). Fig. 13(b) is a diagram showing a state in which the floor plate part 31 is horizontal with respect to the float 85 when the floor plate unit 2 is placed on the cam 52 and the second cushion 8.

[0053] The angle α is the difference in angle between the state shown in Figure 13(b) when viewed from the side, i.e., the state in which the floor plate portion 31 is horizontal with respect to the float 85, and the state shown in Figure 13(c) when the floor plate portion 31 is rotated and inclined with respect to the float 85. 13(c) is a diagram showing a state in which the floor plate unit 2 is placed on the cam 52 and the second cushion 8, and the floor plate part 31 rotates and is inclined with respect to the float 85. In addition, in Fig. 13(b) and Fig. 13(c), the center of rotation of the floor plate part 31 relative to the arm 20 is indicated by the symbol CG. In the embodiment, as an example, a case where the angle α is set to about 11° will be described. This is because the movable range in which the floor plate part 31 can rotate with respect to the arm 20 is an angle at which the center of gravity of the floor plate part 31 is located between the pipe 54, which serves as the fulcrum of the arm 20, and the cam 52 in a state in which the floor plate part 31 is located on the float 85 via the arm 20.

[0054] (locking mechanism) The locking mechanism 6 is a mechanism for fixing the floor plate part 31 to the outer box 83 by fixing the receiving metal part 35 to the outer box 83 when the floor plate part 31 is in the floor plate storage position. In other words, the locking mechanism 6 is a mechanism capable of fixing the floor plate part 31 to the outer box 83 when the position of the floor plate part 31 is in the floor plate storage position. The locking mechanism 6 also has a main mechanism and a sub mechanism. As a result, the locking mechanism 6 has redundancy due to the dual mechanisms (main mechanism and sub mechanism), and is configured to prevent the floor plate 30 from falling while the crane-mounted vehicle 100 is traveling. The main mechanism of the lock mechanism 6 includes a snatch lock 60, a guide frame 62, and a fixed bracket 66, as shown in FIGS. The snatch lock 60 has two levers 61 .

[0055] The two levers 61 are constantly subjected to a force by a tension spring (not shown) in a direction in which the snatch lock 60 is closed. The force applied by the tension spring to the lever 61 is set to, for example, about 2 kgf. This is to prevent the snatch lock 60 from being released against the intention of the operator by applying a force to the lever 61 in a direction in which the snatch lock 60 is closed by the tension spring. One end of the tension spring is attached to the lever 61, and the other end is attached to a bolt (not shown) that fixes the snatch lock 60. In order to prevent a moment force from being generated on the lever 61 around the bolt to which the other end of the tension spring is attached, the attachment position to the bolt is set so that the vector of the force generated by the tension spring passes near the center of the bolt. A claw portion (not shown) is formed on each of the two levers 61. The two levers 61 are operated simultaneously.

[0056] The claw portion is formed in a shape (for example, a hook shape) that is capable of gripping the outer diameter surface of the rod portion 35b. As shown in Figure 3, when the lever 61 is closed in the floor plate storage position, the claw portion of the lever 61 contacts the rod portion 35b to fix the rod portion 35b, thereby restricting displacement of the floor plate portion 31 in the direction in which the position of the floor plate portion 31 changes to the floor plate installation position. When releasing (unlocking) the fixation of the base plate portion 31 by the snatch lock 60, the lever 61 is opened, causing the claw portion to separate from the rod portion 35b, releasing the rod portion 35b, and allowing the position of the base plate portion 31 to be displaced in the direction of changing to the base plate installation position.

[0057] That is, when the position of the floor plate part 31 is the floor plate storage position, the snatch lock 60 provided in the locking mechanism 6 can be operated to lock the rod part 35b with the claw part, thereby fixing the floor plate part 31 to the outer box 83. In the following description, the state in which the floor plate part 31 is fixed to the outer box 83 may be referred to as the "locked state." As a result, the receiving metal part 35 having the rod part 35b functions as a component for locking the floor plate part 31 to the side surface of the outrigger 80 in the floor plate storage position. By configuring the snatch lock 60 to have two levers 61, even if one of the levers 61 breaks down due to damage to the claw portion, the other lever 61 can fix the base plate portion 31. This provides redundancy to the snatch lock 60, which is the main mechanism.

[0058] The guide frame 62 is made of a plate material and is formed in a U-shape having a pair of side plate portions 62a and a connecting plate portion 62b connecting the pair of side plate portions 62a, and connects the two levers 61 together. The pair of side plate portions 62a are attached to the front and rear facing surfaces of the four outer circumferential surfaces of the outer box 83, respectively. A gap is formed between the connecting plate portion 62b and the outer box 83.

[0059] As shown in FIG. 16, the guide frame 62 also includes a support plate portion 62c formed continuously with the connecting plate portion 62b. The support plate portion 62c is formed continuous with an upper end portion of the connecting plate portion 62b, and is formed in a shape that approaches the outer box 83 from the connecting plate portion 62b. In addition, the end portion of the support plate portion 62c opposite to the side continuous with the connecting plate portion 62b protrudes upward inside the gap formed between the connecting plate portion 62b and the outer box 83. The fixed bracket 66 is fixed to the outer box 83 and supports the weight of the base plate portion 31 together with the snatch lock 60 .

[0060] The sub-mechanism of the lock mechanism 6 includes a striker bracket 67, a sub-lock spring 63, a release grip 64, and a lock member 65, as shown in, for example, FIGS. The striker bracket 67 is formed in a box shape and is fixed to the outer box 83 with its opening facing the outer box 83. The sub-lock spring 63 is formed, for example, by using a coil spring. One end of the sub-lock spring 63 is attached to the striker bracket 67. The release grip 64 is made of a plate material and is formed into a shape having a spring support portion 64a and a grip portion 64b.

[0061] The spring support portion 64a is disposed above the guide frame 62 with its thickness direction parallel to the traveling direction of the vehicle body 101, and the other end of the sub-lock spring 63 is attached to the spring support portion 64a. The grip portion 64b is disposed above the spring support portion 64a and the support plate portion 62c when viewed from the traveling direction of the vehicle body 101. The grip portion 64b is formed by bending one portion of a plate material at an angle less than a right angle, and the spring support portion 64a is fixed to the grip portion 64b at a position away from the guide frame 62.

[0062] The locking member 65 includes a first key portion 65a, a connecting portion 65b, a second key portion 65c, and a third cushion 65d. The first key portion 65a is formed in a plate shape. The first key portion 65a is formed by bending two portions of a plate material at an angle less than a right angle, and the thickness direction of the portion disposed on the upper side in the state shown in Fig. 16(a) and the thickness direction of the portion disposed on the lower side in the state shown in Fig. 16(a) are parallel to the left-right direction of the vehicle body 101 in the state shown in Fig. 16(a). The connecting portion 65b is formed in a plate shape and is fixed to the grip portion 64b and the upper surface of the second key portion 65c in the state shown in Fig. 16(a). The thickness direction of the connecting portion 65b is parallel to the left-right direction of the vehicle body 101 in the state shown in Fig. 16(a). The second key portions 65c are a pair of plates having notches on the lower side.

[0063] In addition, the second key portion 65c is fixed in a state where it is positioned on the left end face and the right end face of the first key portion 65a in a side view, respectively, with its thickness direction oriented parallel to the traveling direction of the vehicle body 101, relative to the ends of the first key portion 65a that are positioned upward in the state shown in Figure 16(a). The third cushion 65d is made of an elastic material such as rubber, and is attached to the surface of the connecting portion 65b that faces the outer box 83 in the state shown in Fig. 16(a). In addition, the surface of the third cushion 65d that faces the outer box 83 in the state shown in Fig. 16(a) is closer to the outer box 83 than the surface of the second key portion 65c that faces the outer box 83 in the state shown in Fig. 16(a).

[0064] With the above-described configuration, the locking member 65 can slide in accordance with the expansion and contraction of the sub-lock spring 63. In addition, the distance over which the locking member 65 can slide is set to, for example, a distance (13 mm) obtained by adding a margin (5 mm) to the diameter (8 mm) of the rod portion 35b. Also, with the above-mentioned configuration, the sub-mechanism of the locking mechanism 6 can fix the floor plate portion 31 to the outer box 83 by inserting the first key portion 65a between the floor plate portion 31 and the rod portion 35b as shown in Fig. 16(a), for example. Also, the sub-mechanism can release the locked state as shown in Fig. 16(c), for example, by sliding the locking member 65 upward from the state shown in Fig. 16(a) and removing the first key portion 65a from between the floor plate portion 31 and the rod portion 35b as shown in Fig. 16(b). Furthermore, the sub-mechanism is capable of holding the locking member 65 in a position parallel to the side of the outer box 83 by inserting the second key portion 65c into the gap formed between the striker bracket 67 and the side of the outer box 83.

[0065] Therefore, by configuring the locking mechanism 6 to include a sub-mechanism in addition to the main mechanism, even if the main mechanism, the snatch lock 60, fails, the sub-mechanism can secure the base plate portion 31 to the outer box 83. As described above, when the floor plate portion 31 is fixed by the locking mechanism 6, the floor plate portion 31 maintains the floor plate storage position even if the vertical outrigger box 82 performs an extending operation.

[0066] (First cushion) The first cushion 7 is formed into a cube using an elastic material such as rubber. The first cushion 7 is attached to the outer box 83 at a position that comes into contact with the floor plate lower portion 31d when the outer box 83 is in the floor plate storage position. Therefore, the first cushion 7 forms a shock-absorbing member arranged at a position in contact with the floor plate portion 31 on the surface of the outer box 83 facing the floor plate portion 31 when the floor plate portion 31 is in the floor plate storage position. In addition, the first cushion 7 has a function of reducing collision noise that occurs when the floor plate portion 31 comes into contact with the outer box 83 when the floor plate 30 is stored.

[0067] (Second cushion) The pair of second cushions 8 are formed into a cube using an elastic material such as rubber. The height of the second cushions 8 is lower than the cam 52 and the pipe 54. The front second cushion 8f, which is one of the pair of second cushions 8, is attached between the cam 52 and the pipe 54 at a position close to the protruding plate 51b located at the front of the attachment plate portion 51a. The rear second cushion 8r, which is the other of the pair of second cushions 8, is attached between the cam 52 and the pipe 54 at a position of the attachment plate portion 51a close to the protruding plate 51b located at the rear.

[0068] The pair of second cushions 8 also have a function of reducing collision noise generated by contact of the floor plate portion 31 with the arm 20 when the floor plate 30 is installed. Specifically, the pair of second cushions 8 are disposed at positions where the cutout portion 24 comes into contact with the floor plate portion 31 before the cutout portion 24 comes into contact with the pipe 54 when the floor plate 30 is installed. In addition, the pair of second cushions 8 are formed into a shape where the cutout portion 24 comes into contact with the floor plate portion 31 before the cutout portion 24 comes into contact with the pipe 54 when the floor plate 30 is installed. As described above, the floor plate installation device 1 is a device that can be applied to the outriggers 80 mounted on the crane-mounted vehicle 100 that is equipped with side guards SG.

[0069] <Operation> A: Floor plate stored Before describing the floor plate installation operation of the floor plate installation device 1, the floor plate storage state will be described first. In the floor plate storage state, as shown in Fig. 3, Fig. 4 and Fig. 12-1(a), the position of the floor plate part 31 is the floor plate storage position, and the floor plate part 31 is locked by the locking mechanism 6. Furthermore, the inner box 84 is in the most contracted state. That is, in the floor plate storage state, the floor plate part 31 is in a position arranged outside the outer box 83, and the floor plate part 31 is fixed to the outer box 83 by the locking mechanism 6.

[0070] In the floor plate storage state, the floor plate unit 2 is in a state where the boss 42 contacts the pocket portion 25a. In addition, the floor plate unit 2 is stored in a state where it is correctly positioned in the front-rear direction by one of the pair of arm plates 21 contacting the sliding plate 43. Furthermore, the floor plate unit 2 is in a state where the cam 52 is not in contact with the cam contact surface 26. Furthermore, in the floor plate stowing position, the connecting rod 28 is disposed inward of the vertical outrigger box 82. In addition, in the floor plate stowing position, the floor plate part 31 is disposed outward of the vertical outrigger box 82. Therefore, in the floor plate stowing position, the vertical outrigger box 82 is sandwiched between the connecting rod 28 and the floor plate part 31, and the floor plate unit 2 can be removed only when the float 85 is removed from the inner box 84. Therefore, even if a situation arises in which the floor plate unit 2 falls while driving due to damage to parts, etc., the arm 20 comes into contact with the float 85 and the ground side bracket 51, thereby reducing the possibility of the floor plate unit 2 falling off.

[0071] B: Preparation before installing the floor plate Next, preparations before installing the floor plates (hereinafter, sometimes referred to as "pre-installation preparations") will be described. First, in order to secure a space for the operation of placing the floor plate portion 31 between the float 85 and the ground, the outriggers 80 are extended outward. Here, in the locked state, since the floor plate portion 31 is fixed to the outer box 83, the floor plate portion 31 cannot be installed even if the inner box 84 is extended. Therefore, it is necessary to release the locked state as a preparation before installation. Therefore, by sliding the locking member 65 upward and opening the lever 61, as shown in FIG. 12-1(b), the rod portion 35b is released and the locked state by the locking mechanism 6 is released. By releasing the locked state, the floor plate unit 2 becomes separable from the outer box 83. This completes the pre-installation preparation.

[0072] As described above, the base plate portion 31 is set to a preset position by adjusting the cam 52 before reaching the base plate storage position. Therefore, when the posture of the floor plate section 31 is changed from the floor plate storage posture to the floor plate installation posture, as shown in Figures 12-1(b) and 15(b), the posture of the floor plate section 31 when the vertical outrigger box 82 is in the most contracted state becomes the preset posture before reaching the floor plate storage posture.

[0073] In the pre-installation preparation, it is not essential to extend the outriggers 80 outward. That is, for example, if the space in which the crane-mounted vehicle 100 is used to perform work is narrow, the floor plate 30 is installed without extending the outriggers 80 outward. Therefore, the floor plate installation device 1 can be used even in situations in which it is difficult to extend the outriggers 80 outward.

[0074] C: Floor plate installation operation Next, the operation of installing the floor plate will be described. Although Figures 12 and 15 show the operation as viewed from the front, the operation as viewed from the rear is the same. When the inner box 84 is slightly extended after completing the pre-installation preparation, the pair of cams 52 move downward as shown in Fig. 12-1(c) and Fig. 15(c). As a result, the tip portions 21D of the pair of arm plates 21 that were fixed by being sandwiched between the pair of bosses 42 and the pair of cams 52 are released. At this time, the floor plate portion 31 descends due to its own weight together with the extension of the vertical outrigger box 82 with the arm 20 resting on the pair of cams 52. However, the boss 42 is in contact with the inner peripheral surface of the pocket portion 25a, and the arm 20 rotates about the pair of bosses 42 as the rotation axis in response to the descent of the pair of cams 52. That is, while the base plate portion 31, which has a large mass, descends, the pair of arm plates 21 are pushed by the boss 42 from the tip portion 21D so as to be lifted upward with the cam 52 as a fulcrum.

[0075] That is, as the pair of cams 52 descend, the pair of bosses 42 become the center of rotation, and while the pair of cams 52 support the pair of arm plates 21 from below, the pair of arm plates 21 rotate due to the weight of the floor plate portion 31, and the floor plate portion 31 gradually starts to move below the float 85. At this time, the pair of arm plates 21 descend from the tip portion 21D with the cam contact surface 26 in contact with the cam 52.

[0076] Next, as the inner box 84 extends and the pair of arm plates 21 rotate until the base ends 21P are below the float 85 as shown in Fig. 12-2(d) and Fig. 15(d), the protrusion 22 enters between the pair of cams 52 and the pipe 54. At this time, the pocket portion 25a faces upward and is separated from the pair of bosses 42. In the following explanation, the position of the floor plate unit 2 in this state may be referred to as the "layout plate installation preparation position."

[0077] When the position of the floor plate unit 2 becomes the position for preparing to install the floor plate, the inner peripheral surface of the notch 24 of each of the pair of arm plates 21 comes into contact with the outer peripheral surface of the pipe 54 from above. That is, the pair of arm plates 21 comes into a state in which the base end portion 21P is placed on the pipe 54. In the embodiment, when the pair of arm plates 21 comes into a state in which the base end portion 21P is placed on the pipe 54, the bottom surface of the protrusion 22 comes into contact with the upper surface of the second cushion 8 before the inner peripheral surface of the notch 24 comes into contact with the outer peripheral surface of the pipe 54.

[0078] That is, the second cushion 8 is adapted to reduce the impact when the inner peripheral surface of the cutout 24 comes into contact with the outer peripheral surface of the pipe 54. This makes it possible to reduce the metallic sound generated when the pipe 54 comes into contact with the inner peripheral surface of the cutout 24. Also, the position of the cutout 24 is set to a position where the inner peripheral surface of the cutout 24 pinches the outer peripheral surface of the pipe 54 when the attitude of the floor plate part 31 changes from the floor plate storage attitude to the floor plate installation attitude. This makes it possible to prevent the arm 20 and the floor plate part 31 from falling off the ground side bracket 51 when they move while placed on the ground side bracket 51.

[0079] Furthermore, the mass of the floor plate unit 2 is ultimately supported at two points, the pair of cams 52 and the pipe 54. In addition, when the floor plate unit 2 is in the floor plate installation preparation position, the center of gravity of the floor plate part 31 is designed to be located directly below, between the cam 52 and the pipe 54. Therefore, the floor plate unit 2 is placed in a stable state directly below the float 85 by the weight of the floor plate part 31. Since the floor plate unit 2 comes into contact with the upper surface of the second cushion 8, the material of the second cushion 8 may be made sufficiently hard, and the mass of the floor plate unit 2 may be supported at three points by adding the reaction force of the second cushion 8 to the arm plate 21. In addition, the force of the two torsion springs 36 pressing the floor plate portion 31 makes the floor plate portion 31 horizontal in the same manner as the float 85 which is horizontal to the ground in the floor plate installation preparation position.

[0080] When the inner box 84 continues to expand, the floor plate unit 2 descends while remaining placed on the cam 52 and the second cushion 8 (in the floor plate installation preparation position) as shown in Fig. 12-2(e). At this time, the protrusion 22 is inserted between the pair of cams 52 and the pipe 54, so that it is possible to prevent the floor plate unit 2 from shifting left or right and falling during the installation operation. As described above, the convex portion 26a is provided on the cam contact surface 26 at a position where the cam 52 comes into contact with the cam when the attitude of the floor plate portion 31 changes between the intermediate attitude and the floor plate storage attitude. In addition, the concave portion 26b is provided on the cam contact surface 26 at a position where the cam 52 comes into contact with the cam when the attitude of the floor plate portion 31 changes between the intermediate attitude and the floor plate installation attitude. Therefore, the second rotation speed is slower than the first rotation speed.

[0081] The first rotation speed is a speed at which the floor plate portion 31 rotates when the posture of the floor plate portion 31 changes between the intermediate posture and the floor plate storage posture. The second rotation speed is a speed at which the floor plate portion 31 rotates when the posture of the floor plate portion 31 changes between the intermediate posture and the floor plate installation posture. Subsequently, the floor plate unit 2 descends in the floor plate installation preparation position, so that the floor plate portion 31 comes into contact with the ground in a horizontal position. Thereafter, as shown in FIG. 12-2(f), the float 85 is placed on the floor plate portion 31 in conjunction with the movement of the inner box 84 extending. That is, the position of the floor plate portion 31 becomes the floor plate installation position. In the floor plate installation position, the protrusion portion 22 separates from the pair of second cushions 8 and is in a state of being released upward from between the pair of cams 52 and the pipe 54. In addition, the floor plate portion 31 comes into contact with the ground in the floor plate installation position.

[0082] When the floor plate unit 2 descends, the arm plate 21 is supported by the pipe 54, and furthermore, the center of gravity of the floor plate part 31 is located inside in the vehicle width direction from the pipe 54. Therefore, the arm plate 21 will not fall inward due to, for example, the weight of the floor plate unit 2 itself. As described above, the protrusion 22 and the pair of protruding plates 51b overlap in the front-rear direction. That is, the protrusion 22 is sandwiched between the pair of protruding plates 51b from the outside, so that the arm 20 does not shift significantly in the front-rear direction to the extent that it comes into contact with the inner box 84. As described above, after the floor plate portion 31 is placed on the ground, the inner boxes 84 of the pair of left and right vertical outrigger boxes 82 can be simultaneously extended to jack up the vehicle body 101. This ensures stability during operation of the crane 105.

[0083] As described above, the outer guide mechanism 4 and the ground side guide mechanism 5 correspond to a floor plate installation mechanism that displaces the floor plate part 31 so that the attitude of the floor plate part 31 changes from the floor plate storage attitude to the floor plate installation attitude in conjunction with the operation of extending the vertical outrigger box 82. In addition, the floor plate installation mechanism corresponding to the outer guide mechanism 4 and the ground side guide mechanism 5 has an installation guide member that guides the trajectory of the displacement of the floor plate part 31 in conjunction with the operation of extending the vertical outrigger box 82 to a trajectory of changing from the floor plate storage attitude to the floor plate installation attitude. Furthermore, the floor plate installation mechanism corresponding to the outer guide mechanism 4 and the ground side guide mechanism 5 guides the trajectory of the displacement of the floor plate part 31 by bringing the cam 52 into contact with the arm 20 in conjunction with the operation of extending the vertical outrigger box 82 to a trajectory of changing the attitude of the floor plate part 31 from the floor plate storage attitude to the floor plate installation attitude. Moreover, one end of the arm 20 (the end on the base end 21P side) is rotatably attached to the surface of the floor plate part 31 that faces the float 85 in the floor plate installation posture.

[0084] D: Floor plate storage operation Next, the operation of storing the floor plate will be described. The operation of storing the floor plate is basically the reverse of the operation of installing the floor plate shown in FIG. That is, when the inner box 84 is contracted from the sole plate installation posture shown in FIG. 12-2(f), the float 85 rises together with the ground side bracket 51. As the float 85 rises, the pipe 54 comes into contact with the inner peripheral surface of the notch 24 from below. After that, the sole plate part 31 starts to rise in a posture horizontal to the ground with the pipe 54 as an axis, while the arm plate 21 descends from the tip part 21D, so that the bottom surface of the protrusion part 22 comes into contact with the upper surface of the second cushion 8. Next, the arm plate 21 is placed on the pair of cams 52. After that, the sole plate unit 2 moves upward with the pipe 54 and the pair of cams 52, or the combination of them and the pair of second cushions 8, placed thereon, and the sole plate part 31 is raised from the ground as shown in FIG. 12-2(e). That is, the posture of the sole plate unit 2 becomes a sole plate installation preparation posture.

[0085] 12-2(d) and 15(d), as the position of the float 85 approaches the position where the vertical outrigger box 82 is most contracted in conjunction with the operation of contracting the inner box 84, the inner circumferential surface of the pocket portion 25a comes into contact with the outer circumferential surfaces of the pair of bosses 42. Here, because the opening area of ​​the cutout portion 24 is sufficiently larger than the diameter of the bosses 42, it is possible to accommodate the bosses 42 inside the pocket portion 25a with ample space even if there is a misalignment in the left-right direction.

[0086] Furthermore, when the position of the float 85 reaches the position where the vertical outrigger box 82 is most retracted in conjunction with the operation of retracting the inner box 84, the thrust when retracting the inner box 84 is transmitted from the pair of cams 52 to the pair of arm plates 21. As a result, the pair of arm plates 21 are lifted from the base end portion 21P with the pair of bosses 42 as the fulcrum of rotation, and the floor plate portion 31 moves toward the storage position as shown in Fig. 12-1(c) and Fig. 15(c). At this time, the pair of arm plates 21 rotate while the surface between the hook portion 25 and the protrusion portion 22 contacts the sliding plate 43.

[0087] Then, the operator or the like manually moves the base plate portion 31 so that the thickness direction of the base plate portion 31 is parallel to the left-right direction of the crane-mounted vehicle 100, thereby disposing the base plate portion 31 outside the outer box 83. At this time, the surface of the base plate portion 31 facing the outer box 83 comes into contact with the first cushion 7, and the rod portion 35b is pushed into the opening of the snatch lock 60, so that the snatch lock 60 automatically enters the locked state. As a result, the base plate portion 31 enters the base plate storage position. Furthermore, as shown in Fig. 12-1(a) and Fig. 16(a), the locking member 65 is slid downward to insert the first key portion 65a between the base plate portion 31 and the rod portion 35b, so that the base plate unit 2 enters the locked state. Here, the amount of protrusion of the first cushion 7 from the outer box 83 is set to a protrusion amount that prevents the floor plate portion 31 from contacting the pipe 54 when in the floor plate storage position. This makes it possible to suppress noise generated by contact between the floor plate portion 31 and the pipe 54, both of which are made of metal.

[0088] In the embodiment, a part of the hook part 25 is configured to be accommodated between the pair of protruding plates 51b when the position of the floor plate part 31 is the floor plate storage position. In addition, a clearance provided in the front-rear direction is set between the pair of protruding plates 51b and the hook part 25 in order to reliably accommodate a part of the hook part 25 between the pair of protruding plates 51b. Therefore, the floor plate unit 2 can move in the front-rear direction. That is, due to the clearance provided in the front-rear direction, a shift occurs in the pair of arm plates 21 in the front-rear direction every time the floor plate storage operation is performed, and there is a risk of a malfunction, such as, for example, it becoming difficult to fix the pair of arm plates 21 by the lock mechanism 6.

[0089] Therefore, in the embodiment, when the pair of arm plates 21 are misaligned in the front-rear direction due to the inclined surface 43s in the state shown in Fig. 15(d), for example, the surface formed between the hook portion 25 and the protrusion portion 22 comes into contact with the inclined surface 43s before the outer box 83. As a result, the pair of arm plates 21 are automatically positioned along the inclined surface 43s, so that the misalignment in the front-rear direction that occurs in the pair of arm plates 21 during the floor plate storage operation is corrected. In addition, the pair of sliding plates 43 prevent the pair of arm plates 21 from coming into direct contact with the outer box 83, making it possible to prevent paint from peeling off due to contact of the arm plates 21 when the floor boards are stored.

[0090] Here, when changing from the floor plate installation preparation posture to the floor plate storage posture, the lower end of the floor plate part 31 is maintained in a constant posture without tilting outward due to the force of the two torsion springs 36 pushing the floor plate part 31. Normally, the lower part of the floor plate part 31 swings outward due to its own weight and centrifugal force while moving to the floor plate storage posture. After that, there is a risk of the floor plate part 31 coming into contact with the float 85 at a speed that is a combination of the speed at which the restoring force of the pendulum acts and the rotation speed acting on the floor plate part 31 with the rotation of the arm 20. However, the restoring force of the pendulum generated in the floor plate portion 31 is not generated by the force of the two torsion springs 36 pushing the floor plate portion 31. Therefore, the floor plate portion 31 comes into contact with the float 85 only due to the rotational speed acting on the floor plate portion 31.

[0091] As described above, the posture of the floor plate portion 31 changes in response to the extension and contraction of the vertical outrigger boxes 82. Additionally, the outer-side guide mechanism 4 and the ground-side guide mechanism 5 correspond to a floor plate storage mechanism that changes the position of the floor plate section 31 from a floor plate installation position to a floor plate storage position in conjunction with the retraction of the vertical outrigger box 82. Additionally, the floor plate storage mechanism that the outer-side guide mechanism 4 and the ground-side guide mechanism 5 correspond to has a storage guide member that guides the trajectory of the displacement of the floor plate section 31 in conjunction with the retraction of the vertical outrigger box 82 so that it becomes a trajectory that changes from the floor plate installation position to the floor plate storage position. Specifically, the boss 42 and the cam 52 act on the arm 20 in conjunction with the movement of the vertical outrigger box 82 retracting, guiding the trajectory of the displacement of the floor plate portion 31 to take an trajectory that changes from the floor plate installation position to the floor plate storage position.

[0092] Furthermore, the floor plate storage mechanism corresponding to the outer guide mechanism 4 and the ground side guide mechanism 5 contacts the arm 20 with the cam 52 in a direction opposite to that at the time of floor plate installation, which displaces the attitude of the floor plate section 31 to the floor plate installation attitude, in conjunction with the movement of the vertical outrigger box 82 contracting. In addition, the floor plate storage mechanism corresponding to the outer guide mechanism 4 and the ground side guide mechanism 5 rotates the arm 20 in a direction opposite to that at the time of floor plate installation, thereby guiding the trajectory of the displacement of the floor plate section 31 to a trajectory in which the attitude of the floor plate section 31 changes from the floor plate installation attitude to the floor plate storage attitude.

[0093] E: Extension operation when the floor plate portion 31 is not grounded Next, the extending operation of the vertical outrigger box 82 when the floor plate portion 31 is not in contact with the ground will be described. When the vertical outrigger box 82 is extended without the floor plate portion 31 touching the ground, the floor plate unit 2 is locked and the inner box 84 is extended. At this time, as shown in FIG. 13(a), even if the inner box 84 is extended while the floor plate portion 31 is in the locked state, the floor plate portion 31 is fixed to the outer box 83 by the locking mechanism 6, so the floor plate portion 31 does not move and only the inner box 84 slides downward. That is, even if the pair of cams 52 moves downward and the state in which the hook portion 25 is sandwiched by the pair of bosses 42 and the pair of cams 52 is released, the floor plate unit 2 is held with the floor plate portion 31 hanging from the outer box 83. Therefore, as shown in FIG. 13(b), the pair of arm plates 21 do not rotate along the pair of bosses 42. As a result, the floor plate installation operation is not performed, and the vertical outrigger box 82 is extended as usual.

[0094] F: Adjustment of the preset position before reaching the stowing position The adjustment of the preset attitude before the floor plate storage attitude is reached is performed by setting the distance (gap) between the cam contact surface 26 and the cam 52 in the floor plate storage attitude (locked state) to an appropriate value. Here, the "appropriate value" is a value that realizes the set angle of the floor plate 30 when, for example, the preset attitude before the floor plate storage attitude is reached is set to an angle that allows the worker to easily recognize the inclination of the floor plate 30. Also, the gap between the cam contact surface 26 and the cam 52 in the floor plate storage attitude can be adjusted by inserting a shim (not shown) of appropriate thickness into the gap and fixing the cam 52 in a state of contact with the shim.

[0095] Furthermore, the pair of bosses 42 and the pair of cams 52, and the tip portions 21D of the pair of arm plates 21 sandwiched between the pair of bosses 42 and the pair of cams 52, are worn down by sliding caused by the rotation of the pair of arm plates 21, changing the gap between the cam contact surface 26 and the cam 52. For this reason, the change in the gap between the cam contact surface 26 and the cam 52 may cause the preset posture before the floor plate storage posture to become no longer the normal posture.

[0096] In such a case, as shown in Fig. 14(b), the ground contact side guide mechanism 5 of the embodiment can increase or decrease the gap between the cam contact surface 26 and the cam 52 by rotating the cam 52 fixed by the bolt 53 at an eccentric position and changing the position at which the cam 52 is fixed. That is, after changing the fixing positions of the pair of cams 52 with each bolt 53 loosened, it is possible to adjust the gap between the cam contact surface 26 and the cam 52 to an appropriate distance by tightening and fixing each bolt 53. Note that adjustments due to assembly errors during manufacturing can also be made in the same manner.

[0097] Therefore, the locking mechanism 6 corresponds to a posture maintaining unit that maintains the posture of the floor plate section 31 in the floor plate storage posture when the vertical outrigger box 82 is in the most retracted state. Also, the posture maintaining unit that corresponds to the locking mechanism 6 corresponds to an arm fixing member that fixes the arm 20 to the outer box 83 when the vertical outrigger box 82 is in the most retracted state. In addition, the arm fixing member, the installation guide member, and the storage guide member each include a pair of ground side brackets and a pair of cams in common.

[0098] As described above, the floor plate installation device 1 is a device that automatically positions the floor plate part 31, which is stored in a position facing the outer surface of the outer box 83, under the float 85 by extending the inner box 84 downward from the stored position. In addition, with the floor plate part 31 positioned under the float 85, the device automatically stores the floor plate part 31 in a preset position before it reaches the stored position by contracting the inner box 84.

[0099] <Actions and Effects of the Embodiments> The floor plate installation device 1 of the embodiment can provide the following functions and effects. (1) Of the floor plate portion 31, the contact surface 31G, which is the surface facing the ground in the floor plate installation posture, is disposed on the side of the crane-equipped vehicle 100 together with the side guard SG in the floor plate storage posture. As a result, in the floor plate storage position, the floor plate portion 31 also functions as the side guard SG, and even in a configuration in which the outriggers 80 are arranged between the divided side guards SG (front side guard FSG, rear side guard RSG), the objective is to provide a floor plate installation device 1 that can improve the function of preventing entrapment. This makes it possible to prevent entrapment during cornering.

[0100] In addition, in the floor plate storage position, the floor plate portion 31 also functions as the side guard SG, which makes it possible to reduce gaps formed on the sides of the crane-mounted vehicle 100. This makes it possible to avoid and prevent interference between pedestrians and auxiliary equipment such as the battery. Furthermore, since the contact surface 31G is disposed on the side of the crane-mounted vehicle 100 together with the side guard SG in the floor plate storage position, the floor plate installation device 1 can be configured in a compact manner.

[0101] (2) A posture maintaining unit is provided that maintains the posture of the floor plate section 31 in the floor plate storage posture when the vertical outrigger boxes 82 are in the most contracted state. In addition, a floor plate installation mechanism is provided that displaces the floor plate section 31 so that the posture of the floor plate section 31 changes from the floor plate storage posture to the floor plate installation posture in conjunction with the operation of extending the vertical outrigger boxes 82. As a result, it is possible to prevent the position of the floor plate portion 31 from changing and protruding outward from the side guard SG when the crane-mounted vehicle 100 is traveling, etc. In addition, it is possible to reduce the manual labor required to install the floor plate portion 31, as compared to a configuration in which the floor plate portion 31 is installed manually.

[0102] (3) An actuator (a hydraulic cylinder provided on the vertical outrigger box 82) is provided that extends and retracts the vertical outrigger box 82 by displacing the inner box 84 relative to the outer box 83. As a result, the vertical outrigger box 82 can be extended and retracted by the force generated by the actuator, rather than by human power from a worker, etc., eliminating the need for manual labor to install and store the floor plate section 31, thereby improving work efficiency. Furthermore, since there is no need to add a new actuator to extend and retract the vertical outrigger box 82, it is possible to suppress the complexity of the configuration.

[0103] (4) In the floor plate storage position, the contact surface 31G is arranged parallel to the side guards SG when viewed from the front and rear of the crane-mounted vehicle 100. As a result, in the floor plate storage position, the floor plate portion 31 does not protrude significantly from the side guard SG, making it possible to store the floor plate compactly.

[0104] (5) The portion of the floor plate portion 31 that forms the side end of the floor plate portion 31 when viewed from the side of the crane-equipped vehicle 100 in the floor plate storage position is bent more toward the inside of the crane-equipped vehicle 100 than other portions of the floor plate portion 31. As a result, in the floor plate storage position, it is possible to reduce the corners formed between the floor plate portion 31 and the side guard SG. In addition, in the floor plate storage position, the floor plate portion 31 has the same function as a side guard configured to be continuously formed between the front wheel FW and the rear wheel RW.

[0105] (6) When viewed from the thickness direction of the floor plate portion 31 in the floor plate storage position, the shape of the upper side is a trapezoid whose base length is longer than the top side and the lower side is a quadrilateral, and the float 85 contacts only the lower side of the floor plate portion when the floor plate is in the installed position. Therefore, compared to when the shape of the floor plate portion 31 is a rectangle when viewed in the thickness direction of the floor plate portion 31, it is possible to reduce the amount of deviation between the centroid of the floor plate portion 31 and the centroid of the float 85 in the floor plate installation position. As a result, it is possible to reduce the discomfort felt by workers or the like that the position of the floor plate portion 31 relative to the float 85 is inappropriate in the floor plate installation posture.

[0106] In addition, the portion of the floor plate portion 31 that comes into contact with the float 85 has the effect of increasing the ground contact area of ​​the floor plate 30, but the corners and edges of the floor plate portion 31 have little effect in increasing the ground contact area of ​​the floor plate 30. Furthermore, compared to when the shape of the floor plate portion 31 is quadrilateral when viewed in the thickness direction of the floor plate portion 31, even if the area of ​​the corners and edges of the floor plate portion 31 is reduced, it is possible to ensure a sufficient ground contact area as the floor plate 30.

[0107] Therefore, by making the shape of the floor plate portion 31 a trapezoid with the upper side having a base length longer than the top side and a quadrilateral shape on the lower side when viewed from the thickness direction of the floor plate portion 31 in the floor plate storage position, it is possible to reduce the weight of the floor plate portion 31. In addition, the shape of the lower side of the floor plate portion 31 is a quadrangle that functions as the floor plate 30 with only the area of ​​the lower side. Therefore, by including the upper side of the floor plate portion 31 formed in a trapezoid, it is possible to improve the function as the floor plate 30 compared to when the shape of the floor plate portion 31 is a quadrangle when viewed in the thickness direction of the floor plate portion 31.

[0108] (7) A floor plate storage mechanism is provided which changes the position of the floor plate section 31 from the floor plate installation position to the floor plate storage position in conjunction with the action of the vertical outrigger box 82 retracting. As a result, it is possible to reduce the amount of manual work required to store the floor plate section 31. In addition, since the posture of the floor plate section 31 is changed by utilizing the power of the hydraulic cylinders used to extend and retract the vertical outrigger boxes 82, there is no need to add a new actuator, making it possible to suppress increases in costs and complexities in the structure. In addition, the floor plate 30 can be configured to have a large contact area, which was previously difficult to transport manually due to its heavy weight.

[0109] (8) When the position of the floor plate section 31 is changed from the floor plate installation position to the floor plate storage position, when the vertical outrigger box 82 is in the most contracted state, the floor plate storage mechanism sets the position of the floor plate section 31 to a preset position before reaching the floor plate storage position. Therefore, by adjusting the position of the cam 52 so that the gap formed between the boss 42 and the cam 52 when the vertical outrigger box 82 is in the most contracted state is wider than the state in which the hook portion 25 is pinched between the boss 42 and the cam 52 and does not move, it is possible to set the posture of the floor plate part 31 to a preset posture before reaching the floor plate storage posture. This makes it possible to stop the automatic displacement of the floor plate part 31 at a position before reaching the floor plate storage posture when changing the posture of the floor plate part 31 from the floor plate installation posture to the floor plate storage posture.

[0110] As a result, when the floor plate part 31 is fixed using the locking mechanism 6, the floor plate part 31 becomes vertical, but when the locking mechanism 6 is not used and the floor plate part 31 is not fixed, the floor plate part 31 becomes inclined. This makes it possible for the worker or the like to feel that the floor plate part 31 is not in a locked state when the floor plate part 31 is in an inclined state, and enables the worker or the like to visually determine whether the floor plate part 31 is in a locked state or not without the need for a sensor or the like.

[0111] (9) The shape of the cam contact surface 26, which is the portion of the arm 20 that comes into contact with the cam 52, is formed into a shape such that the second rotational speed is slower than the first rotational speed. Therefore, after the vertical outrigger box 82 begins to extend from the floor plate storage position, it is possible to rotate the floor plate portion 31 to a position just before reaching under the float 85 at a first rotation speed that is faster than the second rotation speed. As a result, it becomes possible for the worker or the like to quickly recognize the contact range where the floor plate part 31 touches the ground. In addition, by slowing down the rotation speed of the floor plate part 31 from the position just before the floor plate part 31 reaches under the float 85 until the floor plate part 31 becomes horizontal, it becomes possible to prevent contact between the displaced floor plate part 31 and personnel such as the worker.

[0112] (10) When the position of the floor plate portion 31 is in the floor plate storage position and the floor plate portion 31 is fixed by the locking mechanism 6 capable of fixing the floor plate portion 31 to the outer box 83, the floor plate portion 31 maintains the floor plate storage position even if the vertical outrigger box 82 extends. As a result, even if the vertical outrigger box 82 is extended while the locking mechanism 6 is in the locked state, it is possible to perform normal operations for extending the vertical outrigger box 82 without detaching the floor plate unit 2. It is also possible to prevent the floor plate unit 2 from falling off due to vibrations or the like while traveling.

[0113] (11) The outer box 83 includes a cushioning member disposed at a position that makes contact with the floor plate portion 31 on the surface thereof that faces the floor plate portion 31 when the floor plate portion 31 is in the floor plate storage position. As a result, when storing the floor plate portion 31, it is possible to prevent the floor plate portion 31 from coming into contact with the outer box 83, thereby reducing the collision noise generated by the floor plate portion 31 coming into contact with the outer box 83.

[0114] The outrigger 80 of this embodiment can provide the following actions and effects. (12) Equipped with a vertical outrigger box 82 and a floor plate installation device 1. As a result, in the floor plate storage position, the floor plate portion 31 also functions as the side guard SG, and it is possible to provide the outrigger 80 that can improve the function of preventing entrapment even in a configuration in which the outrigger 80 is arranged between the divided side guards SG (front side guard FSG, rear side guard RSG). This makes it possible to prevent entrapment during cornering. In addition, in the floor plate storage position, the floor plate portion 31 also functions as the side guard SG, which makes it possible to reduce gaps formed on the sides of the crane-mounted vehicle 100. This makes it possible to avoid and prevent interference between pedestrians and auxiliary equipment such as the battery. Furthermore, since the contact surface 31G is disposed on the side of the crane-mounted vehicle 100 together with the side guard SG in the floor plate storage position, the outrigger 80 can be configured in a compact manner.

[0115] <Modification> (1) In the embodiment, the ground contact surface 31G is configured to be arranged parallel to the side guards SG when viewed from the front and rear of the crane-mounted vehicle 100 in the floor plate storage position, but this is not limited to this. That is, for example, as shown in Fig. 17, the ground contact surface 31G may be arranged on the outer side of the side guards SG (front side guards FSG) when viewed from the front and rear of the crane-mounted vehicle 100 in the floor plate storage position. Also, for example, as shown in Fig. 18, the ground contact surface 31G may be arranged on the inner side of the side guards SG when viewed from the front and rear of the crane-mounted vehicle 100 in the floor plate storage position. For example, if the side guard SG is configured to include only the rear side guard RSG and not the front side guard FSG, the base plate portion 31 may be configured to be positioned in a position that has the same function as the front side guard FSG.

[0116] (2) In the embodiment, the portion of the floor plate portion 31 that forms the side end of the floor plate portion 31 in a side view of the crane-mounted vehicle 100 in the floor plate storage position is configured to be bent more toward the inside of the crane-mounted vehicle 100 than other portions of the floor plate portion 31. However, the configuration of the floor plate portion 31 is not limited to this. That is, for example, as shown in FIG. 18, the base plate portion 31 may have a configuration in which no bent portion is formed.

[0117] (3) In the embodiment, the floor plate portion 31 is configured to have two bent portions 31R so that the portions forming the side ends of the floor plate portion 31 are bent more toward the inside of the crane-mounted vehicle 100 than other portions of the floor plate portion 31. However, the configuration of the floor plate portion 31 is not limited to this. 19, for example, a configuration may be adopted in which the portions forming the side ends of the floor plate portion 31 are bent more toward the inside of the crane-mounted vehicle 100 than the other portions of the floor plate portion 31 by forming curved portions 31T in two locations on the floor plate portion 31. The two curved portions 31T are formed by bending a portion of the upper floor plate portion 31u that forms the side end of the floor plate portion 31 in a side view in the floor plate storage posture and a portion of the lower floor plate portion 31d that forms the side end of the floor plate portion 31 in a side view in the floor plate storage posture, more toward the inside of the vehicle body 101 than the other portions, so as to form a curved surface.

[0118] (4) In the embodiment, the base plate portion 31 is formed with the two bent portions 31R, but the configuration of the base plate portion 31 is not limited to this. That is, for example, as shown in FIG. 20, the base plate portion 31 may be configured so that no bent portion is formed, and further, spacer members 31S having curved surfaces may be attached to each of the two side ends of the base plate portion 31.

[0119] (5) In the embodiment, the base plate portion 31 is formed with the two bent portions 31R, but the configuration of the base plate portion 31 is not limited to this. That is, for example, as shown in FIG. 21, the floor plate portion 31 may be configured so that no bending portion is formed, and further, a floor plate protection member 70 may be provided which is attached to the floor plate portion 31 and positioned between the floor plate portion 31 and the side guard SG in the floor plate storage position. The floor plate protection member 70 is shaped, for example, to surround the surface of the floor plate portion 31 that faces outward in the floor plate storage position. The material of the floor plate protection member 70 is, for example, a resin material or other material that is softer than the material forming the floor plate portion 31. When attaching the floor plate protection member 70 to the floor plate portion 31, the floor plate protection member 70 is stretched and placed over the floor plate portion 31.

[0120] (6) In the embodiment, when the posture of the floor plate section 31 is changed from the floor plate installation posture to the floor plate storage posture, when the vertical outrigger box 82 is in the most contracted state, the posture of the floor plate section 31 is set to a preset posture before reaching the floor plate storage posture, but this is not limited to this. That is, for example, in a configuration that includes a proximity sensor or the like and that can mechanically determine whether the floor plate portion 31 is in a locked state, it is not necessary to set a preset position before the floor plate portion 31 reaches the floor plate storage position. In this case, the position of the floor plate portion 31 when the vertical outrigger boxes 82 are most retracted may be set as the floor plate storage position.

[0121] (7) In the embodiment, the plate installation device 1 is applied to a vehicle-mounted crane, but this is not limited to this. The plate installation device 1 may be applied to, for example, other cranes or other work vehicles such as aerial work vehicles, as long as they are equipped with outriggers having a similar configuration.

[0122] (8) In the embodiment, the vertical outrigger box 82 is extended and retracted by being configured to include the outer box 83, the inner box 84, and an actuator, but this is not limited to this. That is, for example, the configuration may be such that the inner box 84 is not included, and an extendable member of the actuator that extends and retracts the vertical outrigger box 82 replaces the inner box 84. When the actuator that extends and retracts the vertical outrigger box 82 is a hydraulic cylinder included in the vertical outrigger box 82 as in the embodiment, the rod of the hydraulic cylinder corresponds to the extendable member that replaces the inner box 84. In this case, it is preferable to further include a rotation stopper for the rod.

[0123] (9) In the embodiment, the attitude of the floor plate section 31 is automatically changed to the floor plate installation attitude or the floor plate storage attitude in response to the extension and contraction of the vertical outrigger boxes 82, but this is not limited to the above. In other words, the attitude of the floor plate section 31 may be changed to the floor plate installation attitude or the floor plate storage attitude by manual force from an operator or the like. In this case, for example, as shown in Figures 22 to 24, the base plate part 31 is configured to include an anchor part 31F, and an anchor receiving part 86 is fixed to the side surface of the outer box 83. Note that Figure 22 shows a simplified example of the base plate part 31 formed into a quadrangle.

[0124] The anchor portion 31F is disposed on the surface of the floor plate portion 31 opposite the ground surface 31G. The anchor portion 31F has a portion (protruding portion) protruding from the surface of the floor plate portion 31 opposite the ground surface 31G at the upper end portion shown in Fig. 22, and a rod-shaped portion (rod-shaped portion) extending downward from the protruding portion. The anchor receiving portion 86 is formed in a columnar shape with a square cross section, and is fixed to one of the side surfaces of the outer box 83, the surface facing the forward movement direction of the crane-mounted vehicle 100, and the surface facing the backward movement direction of the crane-mounted vehicle 100. Further, the anchor receiving portion 86 has a hole formed in the surface facing upward while fixed to the outer box 83, into which the rod-shaped portion of the anchor portion 31F can be inserted.

[0125] When the outriggers 80 are not being used, such as when the crane-mounted vehicle 100 is traveling, the rod-shaped portions of the anchor portions 31F are manually inserted into holes formed in the anchor receiving portions 86, thereby fixing the floor plate portion 31 to the outer box 83 via the anchor receiving portions 86. This stores the floor plate portion 31. On the other hand, when the outriggers 80 are being used, the anchor portions 31F are manually removed from the anchor receiving portions 86, and the floor plate portion 31 is installed between the float 85 and the ground.

[0126] (10) In the embodiment, the shape of the floor plate portion 31 is a trapezoidal plate when viewed from the side in the floor plate storage position, but this is not limited to this. For example, as shown in Figure 22, the shape of the floor plate portion 31 may be a square (rectangle) when viewed from the thickness direction of the floor plate portion 31. [Explanation of symbols]

[0127] 1 Outrigger floor plate installation device 2. Sole plate unit 4 Outer guide mechanism 5. Ground side guide mechanism 6 Locking mechanism 7 First Cushion 8 Second Cushion 20 Arm 21 Arm Plate 22 Protrusion 23 Bend section 24 Notch 25 Hook part 25a Pocket 26 Cam contact surface 26a Convex 26b Recess 27 Shaft hole 28 Connecting Rod 30 Bottom plate 31 Bottom plate part 31u top of bottom plate 31d Lower part of floor plate 31c Bottom plate cutout 31R Bending section 31G ground plane 31T curved section 31S Spacer member 31F Anchor section 32 Bracket part 32h Bracket side cutout 33 Arm mounting base 34 Arm mounting pin 35 Receiving bracket part 35a Reinforcement plate 35b Rod section 36 Torsion Spring 36a Coil section 37 Ground cushion 41 Outer bracket 42 Boss 43 Sliding plate 43a Arm contact surface 43s slope 51 Ground side bracket 51a Mounting plate 51b Convex plate 52 Cam 53 Volts 54 Pipe 60 Snatchlock 61 Lever 62 Guide Frame 63 Subrock Spring 64 Release Grip 65 Locking member 66 Fixing bracket 67 Striker bracket 70 Floor protection material 80 Outrigger 81 Horizontal outrigger box 82 Vertical outrigger box 83 Outer Box 84 Inner Box 85 Float 86 Anchor receiving part 91 Base Column 92 93 Boom 94 Hook 100 Crane-equipped vehicles 101 Vehicle body 102 Cargo Bed 103 Driver's cab 104 Chassis frame 105 Crane 106 Wire Rope SG Side Guard FSG Front Side Guard RSG Rear Side Guard FW front wheel RW rear wheel

Claims

1. An outrigger floor plate installation device applicable to outriggers mounted on a vehicle equipped with side guards, The outrigger is A cylindrical outer box having a length direction parallel to a height direction of the vehicle; an inner box that is inserted into the outer box from one end to form a vertical outrigger box together with the outer box and displaceable relative to the outer box; A floor plate portion that comes into contact with the ground when the outrigger is in use; a position maintaining section for maintaining the position of the floor plate section in a position in which the floor plate section is disposed between the inner box and the ground in a floor plate installation position in which the floor plate section is disposed between the inner box and the ground, and a position in which a surface of the floor plate section opposite a ground contact surface that faces the ground faces a side surface of the outer box; a floor plate installation mechanism that displaces the floor plate section so that the attitude of the floor plate section changes from the floor plate storage attitude to the floor plate installation attitude in conjunction with the operation of extending the vertical outrigger box, An outrigger floor plate installation device in which the contact surface of the floor plate portion is disposed on the side of the vehicle together with the side guard when the posture of the floor plate portion is the floor plate storage posture.

2. An outrigger floor plate installation device applicable to outriggers mounted on a vehicle equipped with side guards, The outrigger is A cylindrical outer box having a length direction parallel to a height direction of the vehicle; an inner box that is inserted into the outer box from one end to form a vertical outrigger box together with the outer box and displaceable relative to the outer box; A floor plate portion that comes into contact with the ground when the outrigger is in use; and a float attached to the other end of the inner box, a contact surface of the floor plate portion, which is a surface facing the ground when the floor plate portion is in a floor plate installation position in which the floor plate portion is disposed between the inner box and the ground, is disposed on a side surface of the vehicle together with the side guard when the floor plate portion is in a floor plate storage position in which a surface of the floor plate portion opposite to the contact surface faces a side surface of the outer box, The shape of the floor plate portion is a trapezoid whose upper side has a base side longer than its upper side and a quadrilateral whose lower side has a shape when viewed in a thickness direction of the floor plate portion in the floor plate storage position, The float contacts only the lower side of the floor plate portion in the floor plate installation position.

3. An outrigger floor plate installation device applicable to outriggers mounted on a vehicle equipped with side guards, The outrigger is A cylindrical outer box having a length direction parallel to a height direction of the vehicle; an inner box that is inserted into the outer box from one end to form a vertical outrigger box together with the outer box and displaceable relative to the outer box; A floor plate portion that comes into contact with the ground when the outrigger is in use; a floor plate protection member attached to the floor plate portion and disposed between the floor plate portion and the side guard in a floor plate storage position in which a surface of the floor plate portion opposite a ground contact surface that is a surface of the floor plate portion that faces the ground in a floor plate installation position in which the floor plate portion is disposed between the inner box and the ground faces a side surface of the outer box, An outrigger floor plate installation device in which the contact surface of the floor plate portion is disposed on the side of the vehicle together with the side guard when the posture of the floor plate portion is the floor plate storage posture.

4. 4. The outrigger floor plate installing device according to claim 3, wherein the floor plate protection member is formed using a material softer than a material forming the floor plate portion.

5. An outrigger floor plate installation device applicable to outriggers mounted on a vehicle equipped with side guards, The outrigger is A cylindrical outer box having a length direction parallel to a height direction of the vehicle; an inner box that is inserted into the outer box from one end to form a vertical outrigger box together with the outer box and displaceable relative to the outer box; A floor plate portion that comes into contact with the ground when the outrigger is in use; a floor plate storage mechanism that changes the attitude of the floor plate portion from a floor plate installation attitude in which the floor plate portion is disposed between the inner box and the ground to a floor plate storage attitude in which a surface of the floor plate portion opposite a ground contact surface, which is the surface of the floor plate portion that faces the ground in the floor plate installation attitude, faces a side surface of the outer box, in response to the contraction of the vertical outrigger box; An outrigger floor plate installation device in which the contact surface of the floor plate portion is disposed on the side of the vehicle together with the side guard when the posture of the floor plate portion is the floor plate storage posture.

6. The floor plate storage mechanism of the outrigger floor plate installation device of claim 5 is configured to set the attitude of the floor plate section to a preset attitude before the floor plate storage attitude is reached when the vertical outrigger box is in its most contracted state when the attitude of the floor plate section is changed from the floor plate installation attitude to the floor plate storage attitude.

7. a position maintaining unit that maintains the position of the floor plate section in the floor plate storage position when the vertical outrigger boxes are in a most contracted state; a floor plate installation mechanism that displaces the floor plate portion so that the attitude of the floor plate portion changes from the floor plate storage attitude to the floor plate installation attitude in conjunction with the operation of extending the vertical outrigger box; A float attached to the other end of the inner box; and an arm having one end rotatably attached to a surface of the floor plate portion that faces the float in the floor plate installation position, the floor plate installation mechanism has an installation guide member that guides the trajectory of the floor plate portion along which the floor plate portion is displaced in conjunction with the operation of extending the vertical outrigger box so as to change from the floor plate storage position to the floor plate installation position; the floor plate storage mechanism has a storage guide member that guides the trajectory of the displacement of the floor plate section in conjunction with the contraction of the vertical outrigger box so as to change from the floor plate installation position to the floor plate storage position; the attitude maintaining unit has an arm fixing member that fixes the arm to the outer box when the vertical outrigger box is in a most contracted state, the arm fixing member, the installation guide member and the storage guide member all include a ground side bracket disposed in a position facing the outer box when the attitude of the floor plate portion is the floor plate storage attitude, and a pair of cylindrical cams protruding from the ground side bracket toward the outer box, the floor plate installation mechanism unit brings the cam into contact with the arm in conjunction with the operation of extending the vertical outrigger box, thereby guiding the trajectory of the displacement of the floor plate unit so that the posture of the floor plate unit changes from the floor plate storage posture to the floor plate installation posture; the floor plate storage mechanism unit, in conjunction with the operation of the vertical outrigger box contracting, brings the cam into contact with the arm in a direction opposite to that at the time of floor plate installation in order to displace the attitude of the floor plate section to the floor plate installation attitude, and further rotates the arm in a direction opposite to that at the time of floor plate installation, thereby guiding the trajectory of the displacement of the floor plate section to take a trajectory in which the attitude of the floor plate section changes from the floor plate installation attitude to the floor plate storage attitude; A floor plate installation device for outriggers as described in claim 5 or claim 6, wherein the shape of the portion of the arm that comes into contact with the cam is formed in a shape such that a second rotational speed, which is the speed at which the floor plate portion rotates when the posture of the floor plate portion changes between a preset intermediate posture between the floor plate storage posture and the floor plate installation posture, is slower than a first rotational speed, which is the speed at which the floor plate portion rotates when the posture of the floor plate portion changes between the intermediate posture and the floor plate installation posture and the floor plate storage posture.

8. An outrigger floor plate installation device applicable to outriggers mounted on a vehicle equipped with side guards, The outrigger is A cylindrical outer box having a length direction parallel to a height direction of the vehicle; an inner box that is inserted into the outer box from one end to form a vertical outrigger box together with the outer box and displaceable relative to the outer box; A floor plate portion that comes into contact with the ground when the outrigger is in use; a locking mechanism capable of fixing the floor plate portion to the outer box when the floor plate portion is in a floor plate storage position in which a surface of the floor plate portion opposite a ground contact surface that is a surface of the floor plate portion facing the ground in a floor plate installation position in which the floor plate portion is disposed between the inner box and the ground faces a side surface of the outer box, the ground contact surface of the floor plate portion is disposed on a side surface of the vehicle together with the side guard when the floor plate portion is in a floor plate storage position in which a surface of the floor plate portion opposite to the ground contact surface faces a side surface of the outer box, When the floor plate portion is fixed by the locking mechanism, the floor plate portion maintains the floor plate storage position even when the vertical outrigger box is extended.

9. An outrigger floor plate installation device applicable to outriggers mounted on a vehicle equipped with side guards, The outrigger is A cylindrical outer box having a length direction parallel to a height direction of the vehicle; an inner box that is inserted into the outer box from one end to form a vertical outrigger box together with the outer box and displaceable relative to the outer box; A floor plate portion that comes into contact with the ground when the outrigger is in use; a cushioning member disposed in a position that contacts the floor plate portion on a surface of the outer box that faces the floor plate portion when the floor plate portion is in a floor plate storage position in which a surface of the outer box opposite a ground contact surface that faces the ground faces a side of the outer box in a floor plate installation position in which the floor plate portion is disposed between the inner box and the ground, The contact surface of the floor plate portion is arranged on the side of the vehicle together with the side guard when the floor plate portion is in a floor plate storage position in which the surface of the floor plate portion opposite the contact surface faces the side of the outer box.

10. An outrigger floor plate installation device as described in any one of claims 1 to 9, further comprising an actuator that extends and contracts the vertical outrigger box by displacing the inner box relative to the outer box.

11. 11. The outrigger floor plate installing device according to claim 1, wherein the ground contact surface is arranged parallel to the side guards when viewed from the front and rear of the vehicle in the floor plate stowed position.

12. 11. The outrigger floor plate installing device according to claim 1, wherein the ground contact surface is arranged outboard of the side guards when viewed from the front and rear of the vehicle in the floor plate stowed position.

13. 11. The outrigger floor plate installing device according to claim 1, wherein the ground contact surface is arranged on the inside of the side guards when viewed from the front and rear of the vehicle in the floor plate stowed position.

14. An outrigger floor plate installation device as described in any one of claims 1 to 13, wherein a portion of the floor plate portion that forms a side end of the floor plate portion when viewed from the side of the vehicle in the floor plate storage position is bent more toward the inside of the vehicle than other portions of the floor plate portion.

15. The inner box further includes a float attached to the other end thereof, The shape of the floor plate portion is a trapezoid whose upper side has a base side longer than its upper side and a quadrilateral whose lower side has a shape when viewed in a thickness direction of the floor plate portion in the floor plate storage position, 15. The outrigger floor plate installing device according to claim 1, wherein the float contacts only the lower side of the floor plate portion in the floor plate installing position.

16. 16. An outrigger floor plate installation device as described in any one of claims 1 to 15, further comprising a floor plate protection member attached to the floor plate portion and positioned between the floor plate portion and the side guard in the floor plate storage position.

17. 17. The outrigger floor plate installing device according to claim 16, wherein the floor plate protection member is formed using a material softer than a material forming the floor plate portion.

18. An outrigger floor plate installation device as described in any one of claims 1 to 17, further comprising a floor plate storage mechanism that changes the position of the floor plate section from the floor plate installation position to the floor plate storage position in conjunction with the action of the vertical outrigger box shrinking.

19. The floor plate installation device for outriggers as described in claim 18, wherein the floor plate storage mechanism unit changes the attitude of the floor plate section from the floor plate installation attitude to the floor plate storage attitude when the vertical outrigger box is in its most contracted state and sets the attitude of the floor plate section to a predetermined attitude before reaching the floor plate storage attitude.

20. a position maintaining unit that maintains the position of the floor plate section in the floor plate storage position when the vertical outrigger boxes are in a most contracted state; a floor plate installation mechanism that displaces the floor plate portion so that the attitude of the floor plate portion changes from the floor plate storage attitude to the floor plate installation attitude in conjunction with the operation of extending the vertical outrigger box; A float attached to the other end of the inner box; and an arm having one end rotatably attached to a surface of the floor plate portion that faces the float in the floor plate installation position, the floor plate installation mechanism has an installation guide member that guides the trajectory of the floor plate portion along which the floor plate portion is displaced in conjunction with the operation of extending the vertical outrigger box so as to change from the floor plate storage position to the floor plate installation position; the floor plate storage mechanism has a storage guide member that guides the trajectory of the displacement of the floor plate section in conjunction with the contraction of the vertical outrigger box so as to change from the floor plate installation position to the floor plate storage position; the attitude maintaining unit has an arm fixing member that fixes the arm to the outer box when the vertical outrigger box is in a most contracted state, the arm fixing member, the installation guide member and the storage guide member all include a ground side bracket disposed in a position facing the outer box when the attitude of the floor plate portion is the floor plate storage attitude, and a pair of cylindrical cams protruding from the ground side bracket toward the outer box, the floor plate installation mechanism unit brings the cam into contact with the arm in conjunction with the operation of extending the vertical outrigger box, thereby guiding the trajectory of the displacement of the floor plate unit so that the posture of the floor plate unit changes from the floor plate storage posture to the floor plate installation posture; the floor plate storage mechanism unit, in conjunction with the operation of the vertical outrigger box contracting, brings the cam into contact with the arm in a direction opposite to that at the time of floor plate installation in order to displace the attitude of the floor plate section to the floor plate installation attitude, and further rotates the arm in a direction opposite to that at the time of floor plate installation, thereby guiding the trajectory of the displacement of the floor plate section to take a trajectory in which the attitude of the floor plate section changes from the floor plate installation attitude to the floor plate storage attitude; A floor plate installation device for outriggers as described in claim 18 or claim 19, wherein the shape of the portion of the arm that comes into contact with the cam is formed in a shape such that a second rotational speed, which is the speed at which the floor plate portion rotates when the posture of the floor plate portion changes between a preset intermediate posture between the floor plate storage posture and the floor plate installation posture, is slower than a first rotational speed, which is the speed at which the floor plate portion rotates when the posture of the floor plate portion changes between the intermediate posture and the floor plate installation posture and the floor plate storage posture.

21. a lock mechanism capable of fixing the floor plate portion to the outer box when the floor plate portion is in the floor plate storage position, An outrigger floor plate installation device as described in any one of claims 1 to 20, wherein when the floor plate portion is fixed by the locking mechanism, the floor plate portion maintains the floor plate storage position even when the vertical outrigger box is extended.

22. An outrigger floor plate installation device as described in any one of claims 1 to 21, further comprising a cushioning member arranged in a position that contacts the floor plate portion on the surface of the outer box facing the floor plate portion when the posture of the floor plate portion is the floor plate storage posture.

23. An outrigger mounted on a vehicle equipped with a side guard, a vertical outrigger box including a cylindrical outer box whose length direction is parallel to the height direction of the vehicle, and an inner box inserted into the outer box from one end and displaced relative to the outer box, the vertical outrigger box expanding and contracting by displacing the inner box relative to the outer box; An outrigger comprising an outrigger floor plate installing device according to any one of claims 1 to 22.

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