Mixer Truck

Abstract

To provide a mixer car capable of securely fitting an adjuster to a chute catch so as to be held though having a simple structure.SOLUTION: A mixer car 1 comprises: a chute 14 rotatable around a rotational axis 15 extending up and down to a car body; and a chute catch 30 for holding the chute 14 at a prescribed rotational position. The chute 14 comprises: a chute body 14a pivotally connected to the rotational axis 15 and in which an inclination angle in a vertical direction can be changed; and an adjuster 20 pivotally connected to the rotational axis 15 and the chute body 14a and stretched in accordance with the inclination of the chute body 14a to change an inclination angle in a vertical direction. The chute catch 30 comprises: a bracket 35 fitted to the car body; holding parts 31a, 38d provided at the bracket 35 and abutted against the adjuster 20 to hold the adjuster 20; and a long hole 37d rotating the holding parts 31a, 38d in a longitudinal direction to perform the positioning in the longitudinal direction.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a mixer vehicle. [Background technology]

[0002] Conventionally, there has been known a mixer truck having a rotatable drum mounted on a vehicle frame inside which fresh concrete is loaded (see, for example, Patent Document 1). In the mixer truck, a hopper having an inlet at the top end and communicating at the bottom end with the inside of the drum, and a scoop and a chute that serve as a discharge passage for the fresh concrete are provided on the vehicle frame. The fresh concrete can be charged into the drum through the hopper, and the drum can be rotated forward to mix the fresh concrete with a blade while transporting it. At the destination (transportation destination), the drum can be rotated in the reverse direction to discharge the mixed fresh concrete through the scoop and the chute.

[0003] 14, in such a mixer truck, in order to discharge ready mixed concrete to a desired position, chute 510 is provided with a rotating shaft 511, a barrel-shaped chute body 512, and an extendable adjuster 520 pivoted to the rotating shaft 511 and the chute body 512. Chute 510 is capable of rotating about rotating shaft 511 extending vertically. Meanwhile, when the vehicle is traveling, chute 510 is held by chute catch 530 in a state facing, for example, almost straight sideways (facing approximately 90° to the right with respect to the traveling direction of the vehicle), and rotation is restricted in this state.

[0004] Chute catch 530 shown in Fig. 14 is configured to include bracket 538 attached to the right side of drum stand 500 on which the rear end of the drum is placed, and lever member 531 attached to the rear of bracket 538 and rotatable back and forth around shaft 534. An arc-shaped holding portion 538d that opens toward the rear is formed at the rear end of bracket 538. Lever member 531 is formed with arc-shaped holding portion 531a that opens toward the front, and its upper portion is pulled forward by spring 533.

[0005] When the chute 510 is held by the chute catch 530, the chute 510 is rotated toward the back of the drawing about the part of the rotating shaft 511 that extends vertically, and the operating part 532 attached to the lever member 531 is operated upward to turn the holding part 531a backward. In this state, the tube part 521 of the adjuster 520 is pushed into the holding part 538d (holding part 531a), and then the operation of the operating part 532 is released, so that the tube part 521 is sandwiched and held by the holding part 538d and the holding part 531a. At this time, the tensile force of the spring 533 maintains the state in which the holding part 538d and the holding part 531a are in close contact with the tube part 121, suppressing rattling and vibration of the chute 510 when the vehicle is traveling. As a method of holding chute 510, instead of operating operating part 532, lever member 531 may be rotated by pressing tubular part 521 against the part extending rearward of lever member 531, or lever member 531 may be rotated by pressing down on it. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] International Publication No. 2014 / 064828 Summary of the Invention [Problem to be solved by the invention]

[0007] When the vertical inclination angle of the chute body 512 is changed as shown by the arrow A according to the discharge position of the ready-mix concrete, the adjuster 520 expands and contracts accordingly, and the inclination angle of the adjuster 520 itself also changes as shown by the arrow B. The mounting position and mounting angle of the chute catch 530 are adjusted so that the adjuster 520, which has been returned to the specified contracted position, can be held by the surface contact of the holding portion 538d and the holding portion 531a. However, for example, if dust gets into the adjuster 520, the adjuster 520 may not be able to return to the specified contracted position. If the chute 510 is rotated almost sideways in this state, the inclination angle of the adjuster 520 relative to the chute catch 530 may shift, making it difficult to fit, or even if it does fit, it may be difficult to hold it securely by surface contact.

[0008] The present invention has been made in consideration of the above-mentioned circumstances, and has an object to provide a mixer truck that has a simple configuration yet is capable of securely fitting and holding an adjuster in a chute catch. [Means for solving the problem]

[0009] The present invention provides a means for solving the above-mentioned problems as follows: That is, the present invention is a mixer vehicle equipped with a chute that can be rotated around a rotation axis extending vertically relative to a vehicle body, and a chute catch that holds the chute at a predetermined rotation position, the chute includes a chute body pivotally connected to the rotation axis and capable of changing the tilt angle in the vertical direction, and an adjuster pivotally connected to the rotation axis and the chute body, which expands and contracts according to the tilt of the chute body to change the tilt angle in the vertical direction, the chute catch includes a bracket attached to the vehicle body, a holding portion provided on the bracket that abuts against the adjuster to hold the adjuster, and a holding portion that holds the holding portion. The vehicle body is in a width direction. Rotate left and right The above The present invention is characterized by including a left / right adjustment unit that adjusts the position in the left / right direction.

[0010] According to the above-mentioned configuration, the holding part that holds the adjuster is rotated left and right by the left and right adjustment part to adjust the position in the left and right direction, so that the position of the chute catch can be adjusted so that the tilting adjuster can be securely held. As a result, in a mixer vehicle, the adjuster can be securely fitted and held in the chute catch despite the simple configuration.

[0011] In the above configuration, the bracket includes a base end bracket that is attached to the vehicle body, and a tip end bracket that is provided with the holding portion and is attached to the base end bracket by fastening with a bolt, and the left-right adjustment portion is a long hole for fastening a bolt provided in at least one of the base end bracket and the tip end bracket, and the long hole is The above It is preferable that the insulating layer 12 is formed so as to extend in the left-right direction.

[0012] According to the above configuration, the bracket used in conventional mixer vehicles is divided, and the bolt holes are designed to allow the position of the holding part to be adjusted to match the inclination of the adjuster, even with a simple configuration. In detail, when the base bracket and the tip bracket are fastened with a bolt, the long hole is used to adjust the left-right position. In this case, since the bolt is movable left-right within the long hole, one of the base bracket and the tip bracket can be rotated left-right relative to the other bracket to match the mounting angle of the other bracket to the inclination angle of the adjuster. Therefore, even if the adjuster does not return to the specified reduced position, the adjuster can be reliably held by the holding part.

[0013] In the above configuration, the chute catch preferably includes a front-rear adjustment portion that adjusts the position of the holding portion in the front-rear direction.

[0014] According to the above-mentioned configuration, the left / right adjustment unit and the front / rear adjustment unit are used to adjust the left / right position of the holding unit of the chute catch as well as the front / rear position. This allows the adjuster to be securely fitted and held in the chute catch in a mixer truck with a simple configuration.

[0015] In the above configuration, the chute catch preferably includes a vertical adjustment portion that adjusts the vertical position of the holding portion.

[0016] According to the above-mentioned configuration, the left / right adjustment portion and the up / down adjustment portion are used to adjust the left / right position of the holding portion of the chute catch as well as the up / down position. This allows the adjuster to be securely fitted and held in the chute catch in a mixer truck with a simple configuration. Effect of the Invention

[0017] According to the present invention, the position of the chute catch can be adjusted so that the tilting adjuster can be securely held by rotating the holding part that holds the adjuster in the left-right direction with the left-right adjustment part. This allows the adjuster to be securely fitted and held in the chute catch in a mixer vehicle with a simple configuration. [Brief description of the drawings]

[0018] [Figure 1] FIG. 2 is a side view showing the mixer vehicle according to the present embodiment. [Diagram 2] FIG. 2 is a plan view showing the mixer vehicle. [Diagram 3] FIG. 2 is a rear view showing the mixer vehicle. [Figure 4] FIG. 2 is a side view showing a chute, a chute catch, etc., provided on the mixer vehicle. [Diagram 5] FIG. 11 is a rear view showing a shot, a shot catch, etc. [Figure 6] 5 is a view taken along line X1-X1 of FIG. 4. [Figure 7] FIG. 6 is a view taken along line X2 of FIG. 5. [Figure 8] FIG. 4 is a side view showing the vehicle body side plate of the chute catch. [Figure 9] FIG. 2 is a front view showing a first bracket of the chute catch. [Figure 10] FIG. 4 is a side view showing the first bracket of the chute catch. [Figure 11] FIG. 13 is a rear view showing the second bracket of the chute catch. [Figure 12] FIG. 13 is a diagram showing a schematic configuration of a shot catch according to a first modified example. [Figure 13] FIG. 13 is a diagram showing a schematic configuration of a shot catch according to a second modified example. [Figure 14] FIG. 1 is a side view showing a chute, a chute catch, etc., provided in a conventional mixer vehicle. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the description will be given by defining front-rear, left-right, and up-down directions with arrows attached to each drawing.

[0020] 1 to 3 show a mixer truck 1 according to this embodiment. The mixer truck 1 is equipped with a cabin 4 having a vehicle compartment 3 at the front of a vehicle body frame 2, and a drum 5 for mixing ready mixed concrete with an internal blade (not shown) is supported rotatably with a forward-leaning center of rotation at the rear of the vehicle body frame 2. A water tank 19 for storing water for washing is installed at the front right side of the vehicle body frame 2.

[0021] A pillar 6 having left and right opposing portions 6a at its upper portion that extend upward and face each other on the left and right is erected at the rear end of the body frame 2, and the rear end of the drum 5 is rotatably supported by a pair of left and right guide rollers 6b provided at the center of this pillar 6 (the base end of the left and right opposing portions 6a).

[0022] A hydraulic drive unit 8 equipped with a hydraulic pump, a hydraulic motor, etc. is connected to the front end of the drum 5. The drive unit 8 is driven by a traveling engine E to rotate the drum 5 forward and reverse. The mixer vehicle 1 is configured to transmit the driving force of the traveling engine E to rear wheels 9 for traveling, and this traveling engine E may be a diesel engine or a gasoline engine.

[0023] At the upper end of the support 6, a connecting bracket 10 is provided to connect the upper ends of the left and right opposing parts 6a at the rear. A pair of auxiliary frames 11 extending upward are erected at the upper ends of the left and right opposing parts 6a of the support 6. A hopper 12 for feeding fresh concrete into the drum 5 from the rear end of the drum 5 is fixed to the upper end of each auxiliary frame 11. At the rear end of the drum 5, left and right scoops 13 and a chute 14 for discharging the fresh concrete mixed in the drum 5 are arranged. The left and right scoops 13 are arranged in an inverted V shape so that the lower ends approach each other when viewed from behind. The upper end of the chute 14 is arranged below the part where the lower ends of the left and right scoops 13 approach each other.

[0024] Ready-mixed concrete is poured into drum 5 via hopper 12, and transported while being mixed by the blades by rotating drum 5 in the forward direction by the rotation of drive unit 8. At the destination (transportation destination), drum 5 is rotated in the reverse direction by the rotation of drive unit 8, and the mixed ready-mixed concrete is discharged via scoop 13 and chute 14 by the action of the blades.

[0025] 4 and 5 show the chute 14, chute catch 30, etc. provided on the mixer vehicle 1.

[0026] The chute 14 comprises a bucket-shaped chute body 14a through which the ready-mixed concrete flows, a rotating shaft 15 that supports the chute body 14a, and an adjuster 20 that holds the chute body 14a at a predetermined inclination angle.

[0027] The rotating shaft 15 has a vertical section 15a that is supported rotatably about a vertical axis by the drum stand 5a on which the rear end of the drum 5 is placed and extends in the up-down direction, and an inclined section 15b that is connected to the upper end of the vertical section 15a, bent, and positioned below the chute body 14a. The upper end of the inclined section 15b is rotatably attached to the lower surface of the upper part of the chute body 14a via a pin 15c. The lower end of the vertical section 15a is rotatably attached to one end of an adjuster 20 via a pin 15d. The other end of the adjuster 20 is rotatably attached to the lower surface of the lower part of the chute body 14a via a pin 20a.

[0028] The adjuster 20 includes a cylindrical portion 21, a shaft portion 22 inserted axially slidably relative to the cylindrical portion 21, and a lock portion 23 that locks the sliding movement of the shaft portion 22. The adjuster 20 is configured to expand and contract as a whole by the shaft portion 22 sliding relative to the cylindrical portion 21. Note that a hydraulic cylinder may be used instead of the manual adjuster 20.

[0029] The chute 14 can rotate within a range of approximately 180° around the vertical part 15a by rotating the rotation shaft 15 relative to the drum stand 5a. In addition, by releasing the lock by the lock part 23, the shaft part 22 of the chute 14 can slide relative to the cylinder part 21, and the inclination angle in the vertical direction of the chute body 14a can be changed around the pin 15c. This makes it possible to discharge the ready-mix concrete in the drum 5 to a desired position.

[0030] On the other hand, when the vehicle is traveling, the chute 14 is held in a storage position facing substantially sideways (a position facing substantially 90° to the right with respect to the traveling direction of the vehicle in Figs. 3 and 5) by the chute catch 30, and rotation of the chute 14 is restricted in this storage position. Details of the chute catch 30 will be described later.

[0031] In addition, the extension chute 14b is disposed at the discharge end (lower end) of the chute body 14a so as to be rotatable up and down. The extension chute 14b is formed as a gutter-shaped passage member, similar to the chute body 14a. When the extension chute 14b rotates and is located at the storage position on the chute body 14a (see Figs. 3 and 5), the fresh concrete in the drum 5 is discharged from the discharge end of the chute body 14a. On the other hand, when the extension chute 14b rotates downward and is located at the maximum rotation position (see Fig. 4) where it forms one passage together with the chute body 14a, the fresh concrete in the drum 5 is discharged from the discharge end of the extension chute 14b. By using the extension chute 14b in this way, it is possible to extend the passage length of the discharge passage for discharging the fresh concrete in the drum 5.

[0032] 1 to 3, the mixer vehicle 1 is provided with an operating lever 7 for controlling the rotation direction and rotation speed of the drum 5, and a drum operation command signal of the operating lever 7 is sent to a control device (not shown). The operating levers 7 are provided on the left and right sides of the vehicle body frame 2 in the vehicle width direction.

[0033] Next, the shot catch 30 will be described.

[0034] As shown in Figures 4 and 5, the chute catch 30 is composed of a lever member 31 that clamps and holds the tubular portion 21 of the adjuster 20, a spring 33 that biases the lever member 31 forward, and a bracket 35 for attaching these members to the drum stand 5a.

[0035] 6 and 7, the bracket 35 includes a first bracket (base end bracket) 37 that is fixed to a vehicle body side plate 36 fixed to the right side surface of the drum frame 5a by fastening a bolt B1, and a second bracket (tip bracket) 38 that is fixed to the first bracket 37 by fastening a bolt B2. The above-mentioned lever member 31 and spring 33 are attached to the second bracket 38.

[0036] Lever member 31 is attached to second bracket 38 via shaft 34 extending in the left-right direction so as to be rotatable back and forth. Lever member 31 has a holding portion 31a formed of an arcuate surface that opens upward, on the rear side of the portion supported by shaft 34. In addition, a rod-shaped operating portion 32 is attached to the lower portion of lever member 31.

[0037] The lever member 31 is provided so as to accommodate the tubular portion 21 of the adjuster 20 in the arc-shaped holding portion 31a when the chute 14 is facing almost sideways. As shown by the solid line in FIG. 7, the lever member 31 is biased clockwise about the shaft 34 by the spring 33, and the tubular portion 21 of the adjuster 20, which has entered the holding portion 31a by the biasing force of the spring 33, is held in the holding portion 31a. In detail, a holding portion 38d consisting of an arc surface opening toward the rear is formed at the rear end of the second bracket 38, and the tubular portion 21 is sandwiched and held in the front and rear by the arc surface of the holding portion 31a and the arc surface of the holding portion 38d. In this way, the lever member 31 clamps the tubular portion 21 of the adjuster 20, thereby restricting the rotation of the chute 14 and holding it in the rotated position.

[0038] 7, by operating the rod-shaped operating part 32 upward against the biasing force of the spring 33, the lever member 31 rotates counterclockwise about the shaft 34, and the holding of the tube part 21 by the holding part 31a is released. This makes it possible to rotate the chute 14 about the vertical part 15a.

[0039] As shown in Fig. 6, the vehicle body side plate 36 has a substantially U-shaped cross section. As shown in Fig. 8, a plurality of circular holes (bolt holes) 36a (eight in Fig. 8) are formed in the vehicle body side plate 36. A bolt B1 for fastening to the first bracket 37 is inserted into the round hole 36a. A hole diameter d1 of the round hole 36a is substantially the same as the shaft diameter of the bolt B1.

[0040] 9 and 10, the first bracket 37 has at least a first surface 37a facing the vehicle body plate 36 and a second surface 37b facing the second bracket 38, and the first surface 37a and the second surface 37b are provided substantially perpendicular to each other. As shown in FIG. 10, a plurality of oval long holes (bolt holes) 37c (eight in FIG. 9) are formed in the first surface 37a of the first bracket 37. A bolt B1 for fastening to the vehicle body plate 36 is inserted into the long holes 37c.

[0041] The longitudinal width D1 and vertical width H1 of the elongated hole 37c are larger than the shaft diameter of the bolt B1. Since the longitudinal width D1 of the elongated hole 37c is larger than the shaft diameter of the bolt B1, the first bracket 37 can be moved forward or backward relative to the vehicle body plate 36 to adjust its position by loosening the fastening of the bolt B1. This position adjustment can change the longitudinal positions of the arcuate surfaces of the retaining portion 31a and the retaining portion 38d.

[0042] The long holes 37c are provided at positions corresponding to the round holes 36a of the vehicle body side plate 36. In detail, the round holes 36a and the long holes 37c are formed such that the round holes 36a are located in the center of each long hole 37c when the vehicle body side plate 36 and the first surface 37a of the first bracket 37 are overlapped (butted) together.

[0043] 9, the second surface 37b of the first bracket 37 has an oval long hole (bolt hole) 37d formed on the upper side and a circular round hole (bolt hole) 37e formed on the lower side. A bolt B2 for fastening to the second bracket 38 is inserted through the long hole 37d and the round hole 37e. The left-right width D2 and the up-down width H2 of the long hole 37d are larger than the shaft diameter of the bolt B2. The hole diameter d2 of the round hole 37e is approximately the same as the shaft diameter of the bolt B2.

[0044] As shown in Figs. 7 and 11, the second bracket 38 has at least a first surface 38a facing the second surface 37b of the first bracket 37. The first surface 38a is provided substantially perpendicular to a support portion 38b to which the lever member 31 and the spring 33 are attached. As shown in Fig. 11, circular holes (bolt holes) 38c are formed in the first surface 38a of the second bracket 38 in a vertical line (one each on the top and bottom in Fig. 11). A bolt B2 for fastening to the first bracket 37 is inserted through the round hole 38c. A hole diameter d3 of the round hole 38c is substantially the same as the shaft diameter of the bolt B2. The round hole 38c is provided at a position corresponding to the long hole 37d and the round hole 37e of the first bracket 37. In detail, the long hole 37d and the upper round hole 38c are formed so that the upper round hole 38c is located at the center of the long hole 37d when the second surface 37b of the first bracket 37 and the first surface 38a of the second bracket 38 are overlapped (butted) with each other. Also, the round hole 37e and the lower round hole 38c are formed so that the round hole 37e and the lower round hole 38c are aligned with each other. As shown in FIG. 7, when the first bracket 37 and the second bracket 38 are connected, the second surface 37b of the first bracket 37 and the first surface 38a of the second bracket 38 extend toward the front side of the paper. Also, as shown in FIG. 9, the long hole 37d of the first bracket 37 extends in the left-right direction.

[0045] The left-right width D2 and the up-down width H2 of the long hole 37d are formed to be larger than the shaft diameter of the bolt B2. In detail, the long hole 37d (left-right width D2 and up-down width H2) is sized so that the bolt B2 inserted in the upper round hole 38c does not interfere with the second bracket 38 when the second bracket 38 is rotated left-right relative to the first bracket 37 around the bolt B2 inserted in the lower round hole 38c. Therefore, when the bolts B2 inserted in the upper and lower round holes 38c are loosened, the second bracket 38 can be rotated left-right relative to the first bracket 37 around the bolt B2 inserted in the lower round hole 38c to adjust the position in the left-right direction. This position adjustment allows the orientation of the arc surfaces of the holding portion 31a and the holding portion 38d (the mounting angle in the up-down direction) to be changed.

[0046] The vertical mounting angle of the chute catch 30 is adjusted so that the adjuster 20 (tubular portion 21) in a predetermined contracted position can be held by the surface contact of the holding portion 31a and the holding portion 38d. However, for example, dust or the like may get into the tubular portion 20a, and the adjuster 20 may not return to the predetermined contracted position. Also, the adjuster 20 may lower and the inclination angle may change due to looseness in the rotating shaft 15 portion, the pin 15d portion, and the pin 20a portion. In this state, even if the chute 14 is rotated to hold the tubular portion 21 by the holding portion 31a and the holding portion 38d, the inclination angle of the tubular portion 21 may not fit because it is out of alignment with the mounting angle of the holding portion 31a and the holding portion 38d.

[0047] According to this embodiment, the left-right position adjustment (rotation adjustment) can be performed between the first bracket 37 and the second bracket 38 by utilizing the left-right long hole (the long hole 37d of the first bracket 37) which is the left-right adjustment part. This allows the mounting angle in the up-down direction of the holding part 31a and the holding part 38d to be adjusted to match the inclination angle of the cylindrical part 21. Therefore, even with the simple configuration of providing a long hole and a round hole in the mixer vehicle 1, the adjuster 20 can be securely fitted and held in the chute catch 30 even if the adjuster 20 does not return completely to the predetermined contracted position.

[0048] In detail, when the first bracket 37 and the second bracket 38 are fastened by the bolt B2, the long hole 37d of the first bracket 37 is used to adjust the position in the left-right direction. In this case, the bolt B2 is movable in the left-right direction in the long hole 37d, whereas the bolt is immovable in the round hole 37e. The second bracket 38 is rotated in the left-right direction relative to the first bracket 37 around the bolt inserted in the round hole 37e, so that the mounting angle of the second bracket 38 (the holding portion 31a and the holding portion 38d) can be matched with the inclination angle of the tube portion 21. Therefore, even if the adjuster 20 does not return to the predetermined contracted position, the arc surfaces of the holding portion 31a and the holding portion 38d can be brought into surface contact with each other to reliably hold the adjuster 20.

[0049] In addition, by utilizing the elongated hole (elongated hole 37c of first bracket 37) that serves as the front-rear adjustment portion, the front-rear position of first bracket 37 relative to vehicle body side plate 36 can be adjusted. This allows the front-rear position adjustment of holding portion 31a and holding portion 38d.

[0050] In detail, when the vehicle body side plate 36 and the first bracket 37 are fastened with the bolt B1, the first bracket 37 can be moved in the front-rear direction by utilizing the long hole 37c of the first bracket 37. For example, if it becomes difficult to rotate the chute 14 to approximately the side due to deterioration over time, the adjuster 20 can be securely held by the surface contact of the holding portion 31a and the holding portion 38d by sliding the first bracket 37 rearward relative to the vehicle body side plate 36.

[0051] In the case of the conventional configuration described above, as shown in Fig. 14, for example, bracket 538 has round holes 538a instead of elongated holes, making it difficult to adjust the position when fastening the bolt. In contrast, in this embodiment, as described above, by utilizing elongated holes 37c, 37d provided in first bracket 37, it is possible to easily adjust the position in the front-rear direction and the left-right direction when fastening the bolt.

[0052] This allows the positions of holding portion 31a and holding portion 38d to be adjusted to match the pivot position of chute 14 and the contracted position of adjuster 20. Therefore, even with a simple configuration of providing long holes 37c and 37d, adjuster 20 can be securely held by chute catch 30.

[0053] The present invention can be embodied in various other forms without departing from its spirit, essence, or main features. Therefore, the above-described embodiments are merely illustrative in all respects and should not be interpreted as being limited. The scope of the present invention is defined by the claims, and is not limited in any way by the text of the specification. Furthermore, all modifications and changes within the equivalent scope of the claims are within the scope of the present invention.

[0054] A first modified example shown in Fig. 12 will be described. In the above embodiment, a long hole in the front-rear direction (long hole 37c in the first surface 37a of the first bracket 37) serving as a front-rear adjustment portion is used to adjust the position in the front-rear direction between the vehicle body side plate 36 and the first bracket 37. Also, a long hole in the left-right direction (long hole 37d in the second surface 37b of the first bracket 37) serving as a left-right adjustment portion is used to adjust the position in the left-right direction between the first bracket 37 and the second bracket 38.

[0055] 12, instead of the long hole 37c of the first bracket 37 in the above embodiment, a long hole 137g extending in the front-rear direction may be provided in the second surface 137b of the first bracket 137 as a long hole in the front-rear direction serving as a front-rear adjustment portion, so that a configuration can be made in which the position in the front-rear direction can be adjusted between the first bracket 137 and the second bracket 138. The lever member 31 is attached to the second bracket 138. A round hole 138c is formed in the first surface 138a of the second bracket 138, through which a bolt for fastening to the first bracket 137 is inserted.

[0056] Furthermore, instead of the long hole 37d of the first bracket 37 in the above embodiment, a long hole (upper long hole) 136b extending in the left-right direction may be provided in the vehicle body side plate 136 as the long hole in the left-right direction serving as the left-right adjustment portion, thereby enabling left-right position adjustment between the vehicle body side plate 136 and the first bracket 137. In this case, a round hole 136a is provided below the long hole 136b of the vehicle body side plate 136, and round holes 137f are provided vertically in the first surface 137a of the first bracket 137.

[0057] A second modified example shown in Fig. 13 will be described. In the second modified example shown in Fig. 13, the second bracket 38 of the above embodiment is integrally formed with the first bracket 237. As shown in Fig. 13, as in the first modified example, a long hole 236b extending in the left-right direction may be provided in the vehicle body side plate 236 as a long hole in the left-right direction that is the left-right adjustment portion, so that the left-right position adjustment can be performed between the vehicle body side plate 236 and the first bracket 237. Note that the lower hole of the long hole 236b is a round hole 236a.

[0058] Also, as the left-right adjustment unit, a spacer 239 may be sandwiched between the vehicle body side plate 236 and the first bracket 237, and the thickness t of the spacer 239 may be adjusted to adjust the front-rear position between the vehicle body side plate 236 and the first bracket 237. Note that, instead of the spacer 239, for example, a ring member may be used, and the axial length of the ring member may be adjusted to adjust the front-rear position of the first bracket 237. This allows the weight of the components to be lighter than when the spacer 239 is used. In this case, the spacer 239 is also provided with a round hole 239a, and the first surface 237a of the first bracket 237 is provided with a round hole 237f. However, the second surface 237b of the first bracket 237 is not provided with a round hole or an elongated hole. Note that the lever member 31 is attached to the second surface 237b of the first bracket 237.

[0059] Here, a vertical adjustment unit may be added to adjust the vertical positions of the holding portion 31a and the holding portion 38d of the chute catch 30. In the above embodiment, for example, the vertical adjustment unit can be configured by changing the round hole 36a on the upper side of the vehicle body side plate 36 to a long hole extending in the vertical direction. This vertical adjustment unit makes it possible to adjust the vertical position between the vehicle body side plate 36 and the first bracket 37 in addition to the front-rear position adjustment of the above embodiment. When the adjuster 20 is held in an inclined state, the vehicle body side plate 36 is attached to the drum frame 5a in an inclined state corresponding to the inclination of the adjuster 20. In this way, the vertical adjustment unit can move the holding portion 31a and the holding portion 38d up and down along the inclination of the vehicle body side plate 36. Therefore, when adjusting the positions of the holding portion 31a and the holding portion 38d according to the inclination angle of the adjuster 20, the adjustment amount by the left-right adjustment unit can be kept small. On the other hand, when the adjuster 20 is held in an approximately horizontal state, by attaching the vehicle body side plate 36 (the mounting surface to the first bracket 37) to the drum frame 5a in a vertical state, the amount of adjustment by the left and right adjustment parts can be kept small, just as in the case when the adjuster 20 is held in an oblique state.

[0060] Furthermore, a chute body with a different longitudinal length may be used instead of chute body 14a, and the inclination angle of adjuster 20 may be changed depending on the chute body used. However, even in such cases, this can be easily accommodated by adding vertical position adjustment, and adjuster 20 can be securely held in chute catch 30.

[0061] In the above embodiment, the case where only one long hole is provided as the left-right adjustment portion has been described, but two or more long holes may be provided as the left-right adjustment portion. For example, long holes 37d may be provided on the top and bottom of the second surface 37b of the second bracket 37 in the above embodiment (see FIG. 9). Also, the left-right adjustment portion may be configured such that the upper hole is a round hole and the lower hole is a long hole on the second surface 37b of the first bracket 37. Furthermore, a long hole as the left-right adjustment portion may be provided on the first surface 38a of the second bracket 38.

[0062] In the above embodiment, the chute catch 30 is attached to the right side of the drum stand 5a, but the same effect as above can be obtained by attaching it to the left side of the drum stand 5a or to both the left and right sides. Also, in the above embodiment, the chute 14 is held in a state facing almost straight to the side, but the chute catch 30 may be held in a rotation position shifted forward or backward from straight to the side. [Industrial Applicability]

[0063] INDUSTRIAL APPLICABILITY The present invention can be used in a mixer vehicle equipped with a chute that can rotate around a rotation axis that extends vertically relative to the vehicle body, and a chute catch that holds the chute in a predetermined rotation position. [Explanation of symbols]

[0064] 1 Mixer Truck 5a Drum stand (car body) 14 SHOTS 14a Chute body 15 Rotational Axis 20 Adjuster 30 Shot catch 31a Holding part 35 Bracket 37 First bracket (base end bracket) 37c long hole (front / rear adjustment part) 37d long hole (left and right adjustment part) 38 Second bracket (tip bracket) 38d holding part

Claims

1. A mixer vehicle having a chute that can rotate around a rotation axis that extends vertically relative to a vehicle body, and a chute catch that holds the chute at a predetermined rotation position, The chute includes a chute body pivotally connected to the rotating shaft to change the inclination angle in the vertical direction, and an adjuster pivotally connected to the rotating shaft and the chute body, and expands and contracts in response to the inclination of the chute body to change the inclination angle in the vertical direction, The chute catch is characterized in that it comprises a bracket attached to the vehicle body, a holding portion provided on the bracket and abutting against the adjuster to hold the adjuster, and a left-right adjustment portion that rotates the holding portion in the left-right direction, which is the vehicle width direction of the vehicle body, to adjust the position in the left-right direction.

2. The mixer vehicle according to claim 1, the bracket includes a base end bracket attached to the vehicle body, and a tip end bracket provided with the holding portion and attached to the base end bracket by bolt fastening, The left-right adjustment portion is a long hole for fastening a bolt provided in at least one of the base end bracket and the tip end bracket, A mixer truck, wherein the long hole is formed so as to extend in the left-right direction.

3. The mixer vehicle according to claim 1 or 2, The mixer truck is characterized in that the chute catch is provided with a front-rear adjustment portion that adjusts the position of the holding portion in the front-rear direction.

4. The mixer vehicle according to any one of claims 1 to 3, The mixer truck is characterized in that the chute catch is provided with a vertical adjustment portion that adjusts the vertical position of the holding portion.

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