turntable

Abstract

To provide a low height turntable. [Solution] The turntable (1) comprises a rotating shaft holding base (10) installed at the rotation center, a circular frame (20) on which the rotating shaft holding base (10) contacts the inner peripheral side of the annular shape, a positioning frame (30) that positions the outer peripheral side of the circular frame (20) by clamping it from both sides, and a slope (40) attached to the positioning frame (30), a rotating side portion (3) supported by the rotating shaft holding base (10) and equipped with a rotating plate (50) that rotates around the rotation center, and a rotating means held by the rotating plate (50) having a rotation pressing portion that rotates by pressing on the circular frame (20), a control means that drives and controls the rotating means, and an operating portion (70) that operates the control means, and the support side portion (2) is installed directly on the installation surface of the turntable (1).

Description

[Technical Field]

[0001] The present invention relates to a turntable for changing the direction of a vehicle. [Background technology]

[0002] Turntables are known for changing the direction of large vehicles during tunnel construction work. For example, Patent Document 1 discloses a turntable in which a rotating means rotates a rotating disk supported rotatably around a rotation axis on a base placed on the ground.

[0003] Although such turntables can be installed simply by transporting them to a flat installation location, the problem is that the base has a certain thickness, making it impossible to lower the height from the ground to the surface of the turntable on which the vehicle wheels ride. This has made it particularly difficult to utilize such turntables in tunnel construction, where height restrictions from the ground exist. A conventional solution to this problem has been to excavate a hole (depression) called a pit in the ground to lower the relative height of the turntable. However, digging a pit is expensive, and excavating a pit is not possible in some locations.

[0004] Therefore, there was a demand for technology that could lower the height of the turntable itself (the height from the surface of the installation location to the surface of the turntable on which the wheels ride) without having to dig a pit or the like in the ground. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-96728 Summary of the Invention [Problem to be solved by the invention]

[0006] Therefore, in view of the above-mentioned circumstances, an object of the present invention is to provide a turntable with a low height. [Means for solving the problem]

[0007] In order to solve the above problems, the turntable according to the present invention is "A rotation axis holding base installed at the rotation center, a circular frame in which the rotary shaft holder is in contact with an inner peripheral side of the annular shape; a positioning frame that holds the outer periphery of the circular frame from both sides to position it; a ramp attached to the positioning frame; a support side portion comprising: a rotating plate supported by the rotating shaft holder and rotating around the rotation center; a rotating means having a rotary pressing part that is held by the rotating plate and that rotates by pressing on the circular frame; a pivoting side portion comprising: a control means for driving and controlling the rotation means; an operation unit for operating the control means; and The support side is placed directly on the surface on which the turntable is placed.

[0008] The turntable of this configuration comprises a support side portion equipped with a rotation shaft holder, a circular frame, and a positioning frame, a rotating plate on which a vehicle is placed and rotates, a rotating side portion having a rotation means held within the rotating plate, a control means for the turntable, and an operating unit for operating the control means.The support side portion does not have a base like conventional turntables, but is installed directly on the installation surface of the turntable.Therefore, since the turntable does not have a base, there is no thickness of the base, and it is possible to provide a turntable that is lower in height than conventional turntables.

[0009] Furthermore, because it does not have a stand, it is lightweight, which is advantageous for transporting it to the installation surface of the turntable by a transport vehicle. Furthermore, because components such as a stand are not required, the cost of the stand can be reduced. Furthermore, because the rotating shaft holder, circular frame, and positioning frame that make up the support side are configured to be in contact with each other, the turntable can be easily installed in the correct position by simply installing any of the rotating shaft holder, circular frame, or positioning frame in the correct installation position of the turntable.

[0010] In addition to the above configuration, the turntable according to the present invention has the following features: "Two of the rotating means are arranged point-symmetrically around the rotation center, the rotating means and the control means are connected by electrical wiring; the rotary shaft holder has a cable holder that stores the electrical wiring by bending and winding it around; The control means may be configured to control the rotation of the rotary plate in the forward and reverse directions within a range of 180 degrees by operating the operation portion.

[0011] In this configuration, two turntables are provided in the rotating plate, symmetrically about the center of rotation, so that even a heavy vehicle can be easily rotated.

[0012] In addition, in this configuration, the rotating means and control means are connected by electrical wiring within the rotating plate, but when the rotating plate rotates, there is a risk that the electrical wiring will become tangled and break. In this configuration, a cable holder is provided around the rotating shaft holder, which is the center of rotation, and the electrical wiring is stored in a bent and wound around the cable holder. The rotating plate is rotated forward and backward within a range of 180 degrees, preventing the electrical wiring from breaking. This prevents the electrical wiring from becoming complicated and eliminating the risk of the electrical wiring breaking.

[0013] In addition, the control of the rotating plate by the control means by operating the operating unit rotates the rotating plate forward and backward within a range of 180 degrees, making it easy to program the control and preventing the user from operating the turntable incorrectly. [Effects of the Invention]

[0014] As described above, according to the present invention, since a stand is not required, the height of the turntable itself can be lowered, and since excavation of the ground is not required, an inexpensive turntable can be provided. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a perspective view of a turntable according to one embodiment of the present invention. [Figure 2] FIG. 2 is an exploded perspective view of a turntable according to an embodiment of the present invention. [Figure 3] FIG. 3 is a plan view of the support side of the turntable according to one embodiment of the present invention. [Figure 4] FIG. 4 is a cross-sectional view taken along line AA in FIG. [Figure 5] FIG. 5 is a plan view of the rotating side of the turntable according to one embodiment of the present invention, seen from the rear side. [Figure 6] FIG. 6 is an enlarged view of the area B in FIG. [Figure 7] FIG. 7 is an external view of a turntable according to an embodiment of the present invention, as seen from the direction of advance and retreat. DETAILED DESCRIPTION OF THE INVENTION

[0016] A turntable according to a specific embodiment of the present invention and the installation procedure for the turntable will be described below with reference to the drawings. Hereinafter, the terms "upper" and "lower" will be used based on the installed state of the turntable. Furthermore, the planar direction in which a vehicle enters and exits based on the installed state of the turntable will be referred to as the "advance / retreat direction." Furthermore, the planar direction perpendicular to the "advance / retreat direction" will be referred to as the "width direction." Furthermore, the center of rotation of the turntable will be referred to as the "rotation center."

[0017] First, the turntable 1 will be described with reference to Figures 1 to 7. Figure 1 is a perspective view of the turntable 1 according to one embodiment of the present invention, and Figure 2 is an exploded perspective view of the turntable 1. The turntable 1 of this embodiment is a substantially rectangular structure that is long in the forward and backward direction in a plan view, and includes a rotation shaft holder 10, a circular frame 20, a positioning frame 30, a slope 40, a rotation plate 50, a rotation means 60, an operation unit 70, and a control means.

[0018] The components of the turntable 1 of this embodiment are broadly divided into a support side portion 2 that is placed directly on the installation surface G of the turntable 1, and a rotating side portion 3 that covers part of the support side portion 2 and rotates while placing a vehicle T on it. The support side portion 2 includes a rotating shaft holder 10, a circular frame 20, a positioning frame 30, and a slope 40, while the rotating side portion 3 includes a rotating plate 50 and a rotating means 60. An operating unit 70 may also be provided on the rotating side portion 3.

[0019] First, the configuration of the support side part 2 will be described. The support side part 2 is made up of the rotating shaft holder 10, circular frame 20, positioning frame 30, and slope 40 shown in Fig. 2. Fig. 3 is a plan view of the support side part 2 before the rotating plate 50 is attached to the turntable 1. Fig. 4 is a cross-sectional view taken along line AA in Fig. 3.

[0020] The rotating shaft holder 10 comprises a holder 11, a rotating shaft fixing portion 12, a thrust plate 13, an Oiles bushing 14, a housing 15, and a cable holder 16. The rotating shaft holder 10 is installed at a position that will be the center of rotation of the turntable 1. With the exception of the thrust plate 13 and the Oiles bushing 14, the material of the rotating shaft holder 10 is steel, for example, general structural rolled steel (SS steel).

[0021] The support base 11 includes a beam plate 11a and a plurality of legs 11b. The beam plate 11a has a generally cross shape in plan view, with two wide plates intersecting at right angles at the center of rotation of the turntable 1. The four ends of the beam plate 11a are formed in an arc shape. The legs 11b are provided on the back surface of the beam plate 11a and are a plurality (three in this embodiment) of columnar members that support the beam plate 11a and come into contact with the installation surface G. The end of each leg 11b is formed in an arc shape to match the supporting beam plate 11a.

[0022] The pivot fixing portion 12 has a pivot holding portion 12a and a pivot core 12b. The pivot holding portion 12a is a trapezoidal portion that is fixed to the beam plate 11a of the holder 11 with a bolt. The pivot core 12b is a cylindrical member that protrudes upward from the center of the pivot holding portion 12a. When the pivot holding portion 12a is fixed to the holder 11, the center of the pivot core 12b becomes the rotation center of the turntable 1. A mark such as a reference depression may be provided at the center of the pivot core 12b.

[0023] The thrust plate 13 is a bearing such as a ball bearing having an annular shape and an internal hole. The thrust plate 13 is attached to the rotation shaft fixing part 12 with the rotation shaft core 12b inserted into the internal hole of the thrust plate 13.

[0024] The oiles bushing 14 is a cylindrical sliding bearing that has a self-lubricating function and does not require oil supply. The oiles bushing 14 is attached by inserting the rotary shaft 12b into the inner hole of the oiles bushing 14.

[0025] The housing 15 includes a lower cylindrical portion 15a and a holder-side annular plate 15b. The lower cylindrical portion 15a is cylindrical with an internal hole, which houses the OILES bushing 14 and through which the rotation shaft 12b is inserted and which is attached to the thrust plate 13. The holder-side annular plate 15b is an annular plate that expands radially outward from the upper end of the lower cylindrical portion 15a and has multiple bolt insertion holes. The upper surface of the holder-side annular plate 15b is attached to a cover-side annular plate 51a2 of the rotating plate 50, which will be described later.

[0026] The cable holder 16 is a hollow cylindrical member. The cable holder 16 is attached to the upper surface of the holder base 11, surrounding the outer periphery of the rotating shaft fixing part 12 at a distance. Electrical wiring (not shown) is stored between the rotating shaft fixing part 12 and the cable holder 16.

[0027] The circular frame 20 includes an annular rail 21 and an inner ring member 22. The annular rail 21 is a hollow, annular-shaped member formed by welding together two endless sidewall annular members 21a with different inner diameters that form the side walls on both sides of the annular rail 21, an endless bottom annular plate 21b that forms the bottom surface, and an endless upper annular plate 21c that forms the top surface. The inner ring members 22 are two endless ring members with different inner diameters that are arranged inside the hollow of the annular rail 21, and are arranged with a gap in the hollow interior. The inner ring members 22 are arranged with R-chamfered upper and lower opposing surfaces that are separated by the gap. This allows the load from above the circular frame 20 to be distributed. The gap inside the annular rail 21 formed by the inner ring members 22 may be replaced with another inner ring member 22 instead of being an empty space.

[0028] The circular frame 20 is configured so that the four arc-shaped ends of the beam plate 11a of the support base 11 contact and fit onto the inner peripheral surface of the side wall of the side wall circular member 21a. The side wall circular member 21a is made of steel, for example, high-tensile steel (Herten steel). The bottom circular plate 21b and the upper circular plate 21c are made of steel, for example, rolled steel for welded structures (SM steel). The inner ring member 22 is made of steel, for example, SS steel.

[0029] The positioning frame 30 includes a plurality of positioning beams 31, a plurality of connecting beams 32, a sensor 33, and an advance / retraction opening plate 34. The positioning frame 30 has two symmetrical portions that clamp and fix the circular frame 20 from both sides in the advance / retraction direction. The positioning frame 30 is made of steel, for example, stainless steel.

[0030] The positioning beams 31 are beams arranged below the portion (running path portion 56) of the rotating plate 50 on which the wheels of the vehicle T ride when the vehicle T rides on the turntable 1, and a plurality of positioning beams 31 are arranged in parallel at intervals in the forward and backward direction so as to be able to support the weight of the vehicle T. The positioning beams 31 are formed to a length and shape that allows them to come into contact with the outer peripheral surface of the side wall circular member 21a of the circular frame 20 that they clamp. Therefore, the positioning beams 31 are formed to become shorter as they move towards the center of the turntable 1 (towards the rotation center). The positioning beam 31 may be provided by connecting a plurality of short frames, or may be provided as a single long frame.

[0031] The connecting beams 32 are multiple frames that are perpendicular to the positioning beams 31 and span between adjacent positioning beams 31 in parallel to connect them. The connecting beams 32 may be formed of H-shaped steel or the like. The connecting beams 32 may be provided by connecting multiple frames together, or may be provided as a single frame.

[0032] The sensor 33 is a sensor such as a limit switch provided on the connecting beam 32 in the center of the positioning frame 30. The sensor 33 is provided at a position where the measurement surface contacts the outer periphery of the rotating plate 50 and is capable of measuring the amount of rotation of the rotating plate 50, and the value of the sensor 33 makes it possible to detect the amount of rotation of the rotating plate 50. In FIG. 3 , the sensor 33 is fixed to the connecting beam 32 of the positioning frame 30, but is not limited to this and may be provided at any position as long as it can measure the amount of rotation of the rotating plate 50.

[0033] The entrance / exit plate 34 is a plate located at the entrance / exit through which the wheels of the vehicle T travel when the vehicle T rides on the turntable 1. The entrance / exit plate 34 is a rectangular plate arranged in the entrance / exit direction, with a circular arc-shaped notch formed on the side of the rotation center of the turntable 1 that can accommodate the rotating plate 50 described below. The entrance / exit plate 34 is supported by columns 34a so that, when the rotating plate 50 described below is installed, the upper surface (traveling plate 56a) of the portion of the rotating plate 50 on which the vehicle T rides (traveling path portion 56) is flush with the upper surface of the entrance / exit plate 34. The columns 34a that support the entrance / exit plate 34 are preferably made of H-shaped steel or the like. The columns 34a that support the entrance / exit plate 34 are installed on the positioning beam 31 or the connecting beam 32 and fixed with bolts or the like.

[0034] The ramp 40 includes a top portion 41 and an inclined portion 42. The ramp 40 is attached to the entrance and exit positions of the vehicle T, which correspond to the entrance and exit directions of the entrance and exit plate 34 of the positioning frame 30, and is secured by pins or the like. The top portion 41 is the highest point of the ramp 40 above the installation surface G. When the ramp 40 is attached to the entrance and exit plate 34 of the positioning frame 30, it is in contact with the upper surface of the entrance and exit plate 34, being approximately flush with the surface. The inclined portion 42 forms an inclined surface at an angle that allows the vehicle T to climb up, and is a portion that smoothly connects to the top surface of the top portion 41. The angle of the inclined portion 42 is preferably approximately 10°. A plurality of pillars 43, formed of H-shaped steel or the like, are provided on the backsides of the top portion 41 and the inclined portion 42. The pillars 43 are connected to a bottom plate 44, which is placed on the installation surface G, and support the top portion 41 and the inclined portion 42. The ramp 40 is made of steel, for example, stainless steel.

[0035] Next, the configuration of the rotating side part 3 will be described. The rotating side part 3 is composed of a rotating plate 50 shown as the rotating side part 3 in FIG. 2 and a rotating means 60 (not shown in FIG. 2). In FIG. 2, the structure of the back side of a part of the rotating plate 50 is shown by a dashed line. FIG. 5 is a plan view of the rotating plate 50 of the rotating side part 3 as seen from the back side. FIG. 6 is an enlarged view of B around the rotating means 60 shown in FIG. 5. FIG. 7 is an external view of a turntable 1 according to one embodiment of the present invention as seen from the forward / backward direction. The external view in FIG. 7 shows the turntable 1 together with a cross-sectional view of the CC cut surface in FIG. 6.

[0036] In a plan view, the rotating plate 50 has a shape in which both sides of a circle are cut by straight lines parallel to the forward / backward direction, and includes a central portion 51 and two running path portions 56. The central portion 51 and the two running path portions 56 formed adjacent to the central portion 51 on both sides in the width direction are arranged in three rows parallel to the straight lines (forward / backward direction). The rotating plate 50 is attached to the rotating shaft holder 10, and covers the rotating shaft holder 10, the circular frame 20, and part of the positioning frame 30. The rotating plate 50 is made of steel, for example, stainless steel.

[0037] The central portion 51 is a portion where the rotation center of the rotating plate 50 is located, and includes an upper cover portion 51a, a lower inner frame portion 51b, and a plurality of pillars 51c connecting the cover portion 51a and the lower inner frame portion 51b.

[0038] The cover portion 51a has a protruding shape at an upper position corresponding to a lower inner frame portion 51b (described later), and is formed at a height such that the protruding portion does not come into contact with the underside of the chassis of the vehicle T when the vehicle T rides on the rotating plate 50. The cover portion 51a includes an upper cylindrical portion 51a1 that hangs down from the rear surface of the cover portion 51a at a position that serves as the rotation center of the cover portion 51a, and a cover-side circular plate 51a2 that extends in a circular shape from the lower end of the upper cylindrical portion 51a1 toward the outer periphery. The upper cylindrical portion 51a1 is a cylindrical member centered on the rotation center and serves as the rotation axis. The cover-side circular plate 51a2 has insertion holes that correspond to the insertion holes of the holder-side circular plate 15b of the rotating shaft holder 10. The lower surface of the cover-side circular plate 51a2 is connected to the upper surface of the holder-side circular plate 15b and then attached and fixed with bolts or the like. The upper cylindrical portion 51a1 and the cover side circular plate 51a2 connected to the holding base side circular plate 15b are not limited to the above shapes, and a plate may be provided to span the cover portion 51a in the width direction, and the upper surface of the holding base side circular plate 15b may be brought into contact with the lower surface of the plate and attached using bolts or the like.

[0039] The lower inner frame portion 51b is formed below the cover portion 51a at a distance from the cover portion 51a. It is a frame body welded to two longitudinal beams 51b1 that are spaced apart in the width direction and extend in the forward / backward direction, and a short beam 51b2 that connects the two longitudinal beams 51b1 and extends in the width direction. The lower inner frame portion 51b is provided with a pivoting means holder 53 on each side of the forward / backward direction, spaced apart from the pivot center. As shown in FIG. 2, the pivoting means holder 53 is composed of a plate 53a that bridges the two longitudinal beams 51b1. A space capable of accommodating the pivoting means 60 (described below) is formed between the cover portion 51a and the plate 53a that bridges the longitudinal beams 51b1. In FIG. 2, the pivoting means holder 53 is shown without the pivoting means 60. The cover portion 51a and the lower inner frame portion 51b are connected via multiple columns 51c. The column 51c is preferably an H-beam.

[0040] Of the multiple pillars 51c between the cover portion 51a and the lower inner frame portion 51b, an adjustment bracket 54 and a hinge bracket 55 are attached to the pillars 51c that are opposed in the axial direction and that are positioned corresponding to the circular frame 20 when the rotating plate 50 is attached to the rotating shaft holder 10. The adjustment bracket 54 and the hinge bracket 55 are fixed to a drive frame 65d of the rotating means 60 (described later) using adjustment bolts 54c and hinge pins 55c, and hold the rotating means 60.

[0041] As shown in Figures 6 and 7, the adjustment bracket 54 includes an adjustment bracket column fixing portion 54a, an adjustment bolt fixing base 54b, and an adjustment bolt 54c. The adjustment bracket column fixing portion 54a is shaped to follow the outer shape of the column 51c that connects the cover portion 51a and the lower inner frame portion 51b, and is fixed to the column 51c with a bolt or the like. The adjustment bolt fixing base 54b is a horizontally formed plate having a hole to which the adjustment bolt 54c can be attached and fixed. The adjustment bolt 54c is attached vertically to the hole in the adjustment bolt fixing base 54b and is fixed to an adjustment-side bridge plate 67 of the drive frame 65d, which will be described later.

[0042] As shown in Figures 6 and 7, the hinge bracket 55 includes a hinge bracket column fixing portion 55a, a hinge pin fixing portion 55b, and a hinge pin 55c. The hinge bracket column fixing portion 55a is shaped to follow the outer shape of the column 51c that connects the cover portion 51a and the lower inner frame portion 51b, and is fixed to the column 51c with bolts or the like. The hinge pin fixing portion 55b is made up of two plates facing each other in the horizontal direction, and each plate has a hole through which the hinge pin 55c can be inserted. The hinge pin 55c is attached vertically, bridging the hole in each plate of the hinge pin fixing portion 55b with a hinge-side bridge plate 68 of the drive frame 65d (described later).

[0043] The travel path section 56 includes a travel plate 56a, a moving member holding section 56b, a lower outer frame section 56c, and a plurality of pillars 56d connecting the travel plate 56a and the lower outer frame section 56c.

[0044] The traveling plate 56a extends in the forward / backward direction and is formed with a length that allows the front and rear wheels of the vehicle T to ride up onto its upper surface. Both ends of the traveling plate 56a in the forward / backward direction, where the vehicle T enters, are formed in an arc shape that corresponds to the notches in the entrance / exit plate 34 of the positioning frame 30, and the surface of the traveling plate 56a is at approximately the same height as the surface of the entrance / exit plate 34. Furthermore, the traveling plate 56a has width stop walls 57 that are erected on its widthwise ends to guide the wheels of the vehicle T that ride up along the forward / backward direction and prevent them from running off.

[0045] The movable member holding portion 56b is a semicircular space provided on the back surface of the traveling plate 56a, and is an annular space formed by two semicircular walls with different inner diameters. The movable member holding portion 56b is provided at a position corresponding to the circular frame 20 when the rotating plate 50 is attached to the rotating shaft holder 10. A movable member 58 is attached to the back surface of the traveling plate 56a in the movable member holding portion 56b. The movable member 58 is rotatable on the circular rail 21 of the circular frame 20 as the rotating plate 50 rotates. An example of the movable member 58 is a tilt tank. The lower surface of the roller of the tilt tank protrudes downward from the lower end of the lower outer frame portion 56c, which is the lower end of the rotating plate 50, and is attached to the back surface of the traveling plate 56a. When the rotating plate 50 is attached to the rotating shaft holder 10, it comes into contact with the upper surface of the circular frame 20 and rotates and moves on the circular frame 20.

[0046] The lower outer frame portion 56c is formed below the traveling plate 56a at a distance from the traveling plate 56a and includes two outer frame longitudinal beams 56c1 extending in the forward / backward direction and an arc-shaped outer frame beam 56c2 corresponding to the shape of the traveling plate 56a. The lower outer frame portion 56c is preferably provided at the same height as the lower inner frame portion 51b of the central portion 51. The lower outer frame portion 56c provides the traveling path portion 56 of the rotating plate 50 with enough strength to support the weight of the vehicle T. The outer frame beam 56c2 may form the outer frame of the central portion 51 in addition to the traveling path portion 56. The traveling plate 56a and the lower outer frame portion 56c are connected via multiple pillars 56d in the space other than the movable member holding portion 56b. The pillars 56d are preferably H-shaped steel.

[0047] As shown in Figures 5 to 7, the rotation means 60 includes a motor 61 and a drive unit 65. The rotation means 60 is held by two rotation means holders 53 provided on the cover portion 51a, with the rotation center being point symmetric. The two rotation means 60 are controlled to drive in unison. In Figure 5, the plate 53a that holds the rotation means 60 is shown by a dashed line, and the rotation means 60 is shown in perspective.

[0048] The motor 61 includes a brake-equipped geared motor 61a, a motor shaft 61b, and a motor sprocket 61c. The motor 61 is attached to the rotation means holder 53 by a motor mounting plate 62. The brake-equipped geared motor 61a has a horizontally oriented rotation shaft, and generates rotational force when driven. The motor shaft 61b is a horizontally oriented rotation shaft with one end attached to the brake-equipped geared motor 61a. The motor sprocket 61c is a two-row gear with multiple teeth, and is fixed to the end of the motor shaft 61b opposite the brake-equipped geared motor 61a side, and rotates.

[0049] The drive unit 65 includes a drive shaft sprocket 65a, a drive shaft 65b, a rotation pressing unit 65c, and a drive frame 65d. The drive shaft sprocket 65a is a double-row gear with an inner diameter larger than that of the motor sprocket 61c. The drive shaft 65b is arranged parallel to and spaced from the motor shaft 61b, and the drive shaft sprocket 65a is attached to one end of the drive shaft 65b. The rotation pressing unit 65c includes an axial center portion 65c1 made of copper or the like and attached to the other end of the drive shaft 65b opposite the end to which the drive shaft sprocket 65a is attached, and a pressing unit 65c2 made of hard rubber and covering the periphery of the axial center portion 65c1. The rotation pressing unit 65c may be, for example, a drive roller.

[0050] The drive frame 65d includes an inner wall consisting of two wall portions, an adjustment-side bridge plate, and a hinge-side bridge plate. The inner wall consisting of two wall portions is attached to the drive shaft 65b in a manner that the rotation pressure portion 65c is enclosed between the inner wall and the inner wall. A through hole through which the hinge pin 55c is inserted is provided in the inner wall. The adjustment-side bridge plate is a plate that bridges the inner wall at a position on the adjustment bracket 54 side that does not interfere with the rotation of the rotation pressure portion 65c. The plate is provided with an insertion hole through which the adjustment bolt 54c is inserted. The hinge-side bridge plate is a bridging member that bridges the inner wall 65 at a position on the hinge bracket 55 side that does not interfere with the rotation of the rotation pressure portion 65c. The bridging member is provided with an insertion hole through which the hinge pin 55c can be inserted. The drive frame 65d is attached to the adjustment bracket 54 of the rotating plate 50 by the adjustment bolt 54c. The drive frame 65d is attached to the hinge bracket 55 of the rotating plate 50 by a hinge pin 55c.

[0051] A roller chain (not shown) is wound around the motor sprocket 61c and the drive shaft sprocket 65a, and the rotation of the motor sprocket 61c rotates the drive shaft sprocket 65a. The rotation of the drive shaft sprocket 65a rotates the rotary pressing portion 65c, which presses against the annular rail 21 of the circular frame 20, causing the rotating plate 50 to rotate.

[0052] The operation unit 70 includes a stand 71 and a switch 72. The stand 71 is a hollow pole member that holds the switch 72 at its end and is attached, for example, to the outer side wall of the width stop wall 57 on the side of the travel path portion 56 of the rotating plate 50. The stand 71 has electrical wiring (not shown) connected to the switch 72 routed inside the pole member. The switch 72 has a housing 72a that houses a switch and a button 72b provided on the operation surface of the housing 72a. The switch 72 is located in a position where a user can reach it by opening the window from the driver's seat and operate the button 72b when the vehicle T is parked on the turntable 1. For this reason, the operation units 70 are installed in two locations that are point-symmetrical with respect to the rotation center of the rotating plate 50. Note that the operation unit 70 does not have to be provided on the rotating plate 50, and may be installed directly on the installation surface G, as long as it does not interfere with the rotating plate 50 and the user can reach it by opening the window from the driver's seat. Furthermore, the pole member that constitutes the stand unit 71 may have any shape as long as the user can reach the switch unit 72 by opening the window from the driver's seat.

[0053] Next, we will describe the control means that controls and drives the turntable 1. The control means includes a control panel (not shown) that stores a control program for the turntable 1, and a power supply that supplies electricity to the turntable 1. The control panel, power supply, two rotation means 60, sensor 33, and two operation units 70 are connected by electrical wiring (not shown). The control means may be provided at any position on the turntable 1 or outside the turntable 1.

[0054] When button 72b provided on operation unit 70 is pressed, the control panel of the control means drives the two rotating means 60 in cooperation to rotate rotating plate 50. At this time, the control panel is programmed so that when button 72b for controlling rotating plate 50 provided on operation unit 70 is pressed, rotating plate 50 is rotated 180 degrees and automatically stops, and when button 72b for controlling rotating plate 50 provided on operation unit 70 is next pressed, rotating plate 50 is rotated 180 degrees in the opposite direction from the previous rotation and automatically stops. In other words, rotating plate 50 is controlled to rotate forward and backward within a range of 180 degrees, but not to rotate 360 ​​degrees.

[0055] In the turntable 1 of this embodiment, two rotating means 60 are arranged symmetrically about the center of rotation on the rotating means holding portion 53 of the rotating plate 50. However, connecting the two rotating means 60 held within the rotating plate 50 with electrical wiring can easily result in complicated wiring. Furthermore, depending on the wiring, there is a risk that the electrical wiring may become tangled in the rotating shaft holding base 10 and be severed when the rotating plate 50 rotates 360 degrees. Therefore, in this embodiment, a cable holding portion 16 is provided on the rotating shaft holding base 10, and the electrical wiring is bent and routed between the cable holding portion 16 and the rotating shaft fixing portion 12, from which it is connected to the two rotating means 60. The rotating plate 50 is then rotated 180 degrees forward and backward under the control of a control means. This prevents the electrical wiring from becoming complicated and the electrical wiring from being severed. Furthermore, the button 72b that controls the rotating plate 50 of the operating unit 70 is programmed in the control means so that when the button 72b is pressed on any operating unit 70, it will repeatedly rotate 180 degrees forward and backward in the direction opposite to the previous rotation, so that the operation of the operating unit 70 is simple and the user will not make any operational mistakes.

[0056] Next, a description will be given of the installation procedure for the turntable 1 of this embodiment. The installation procedure for the turntable 1 includes a concrete pouring step, a positioning frame installation step, a circular frame installation step, a rotating shaft holder installation step, a rotating plate installation step, an operation unit installation step, and a slope installation step.

[0057] The concrete pouring step is a step of pouring concrete at the location where the turntable 1 is installed so that the surface of the concrete is flat.

[0058] In the positioning frame installation process, the positioning frame 30 is transported to the installation location of the turntable 1 where concrete has been poured, and the positioning frame 30 is installed at a position where the rotation axis 12b of the turntable 1 becomes the rotation center. After the positioning frame 30 is installed in the correct position, it is attached to a fixing plate or the like (not shown), and the fixing plate is fixed to the concrete using anchor bolts (not shown).

[0059] In the circular frame installation process, the circular frame 20 is transported to the location where the positioning frame 30 is installed, and is fitted so that the outer periphery of the circular frame 20 contacts the positioning beams 31 of the positioning frame 30. Note that the circular frame 20 does not need to be fixed in place, but it may be fixed to the concrete with fixing plates and anchor bolts as necessary.

[0060] In the rotating shaft holder installation process, the rotating shaft holder 10 is transported and fitted into the circular frame 20 so that the holder 11 comes into contact with the inner periphery of the frame. The rotating shaft holder 10 does not need to be fixed in place, but it may be fixed to the concrete with a fixing plate and anchor bolts as necessary.

[0061] In the rotating plate installation process, the rotating plate 50 is transported, and the movable member 58 provided on the movable member holding portion 56b of the rotating plate 50 and the rotation pressing portion 65c of the rotating means 60 are placed in contact with the circular rail 21 of the circular frame 20, and the cover side circular plate 51a2 of the rotating plate 50 and the holding base side circular plate 15b of the rotating shaft holding base 10 are attached and fixed with bolts.

[0062] In the operation unit installation step, the operation unit 70 is transported and attached to the side surface of the rotating plate 50 in a position that can be reached from the driver's seat when the car rides up on the turntable 1.

[0063] In the slope installation process, the slope 40 is transported and the top 41 of the slope 40 is brought into contact with the entrance / retraction port plate 34 of the positioning frame 30 and fixed thereto.

[0064] In each step, the control means, the sensor 33, the rotation means 60, and the operation unit 70 are connected by electrical wiring as necessary.

[0065] By following the above procedure, the turntable 1 can be placed in the installation position.

[0066] In the above procedure, an example has been given of a method in which the positioning frame 30 is first installed and fixed at the installation location of the turntable 1, but it is also possible to first install the rotating shaft holder 10 or the circular frame 20 at the installation location of the turntable 1 and position it, and then install the other support side parts 2. When fixing the support side parts 2, i.e., the rotating shaft holder 10, the circular frame 20, and the positioning frame 30 at the installation location of the turntable 1, a fixing plate is provided at the bottom and fixed with anchor bolts, but this may increase the height of the turntable 1 by the amount of the fixing plate. The positioning frame 30 is positioned so that it does not come into contact with the bottom of the rotating plate 50 when the rotating plate 50 is attached, so a fixing plate member can be easily installed in a position that does not affect the height of the turntable 1 (the height from the installation surface G of the turntable 1 to the surface of the running plate 56a of the rotating plate 50).Therefore, it is preferable to first install and fix the positioning frame 30 at the installation location of the turntable 1, and then install the turntable 1 without inserting and fixing the other support side parts 2, as this allows the turntable 1 to be lower in height and easier to install.

[0067] Furthermore, although the method of installing the operation unit 70 at the installation location has been exemplified, it may also be attached directly to the rotating plate 50, transported to the installation location, and installed together with the rotating plate 50. Furthermore, the operation unit 70 may be placed directly in a predetermined position at the installation location without being attached to the rotating plate 50, as long as the switch unit 72 of the operation unit 70 is located within reach from the driver's seat. Furthermore, the ramp 40 may be attached to the positioning frame 30 at the stage when the positioning frame 30 is installed.

[0068] Next, the operation of the turntable 1 of this embodiment will be described. When a vehicle T enters the turntable 1 from the slope 40, the wheels of the vehicle T ride up onto the travel plate 56a of the travel path portion 56 of the rotating plate 50 and stop. A user in the vehicle T reaches out through the window to the operation unit 70 and presses the button 72b on the switch unit 72 of the operation unit 70, causing the rotation means 60 to rotate. The rotation pressing portion 65c of the rotation means 60 presses the circular rail 21 of the circular frame 20, causing the rotating plate 50 to rotate. As the rotating plate 50 rotates, the moving member 58 attached to the moving member holding portion 56b also rotates and moves on the circular rail 21. When the rotating plate 50 rotates 180 degrees, it is detected by the sensor 33 and automatically stops. This operation allows the vehicle T to reverse in the direction opposite to the direction of entry, allowing the vehicle T to exit in the opposite direction from where it rode up.

[0069] Next, we will describe the case where, after vehicle T has exited, the next vehicle T enters the turntable 1 from the slope 40 and stops on the traveling plate 56a of the rotating plate 50. The direction in which vehicle T enters at this time does not have to be the same as the direction in which the vehicle T that previously operated the turntable 1 entered. When the user of the next vehicle T similarly presses button 72b on the operation unit 70, the rotating plate 50 rotates 180 degrees in the opposite direction from the direction in which it was previously rotated and automatically stops upon detection by the sensor 33. This operation also allows the next vehicle T to reverse, and vehicle T can exit in the opposite direction from the direction in which it climbed up.

[0070] As described above, according to the turntable 1 of this embodiment, the support side portion 2, which is made up of the rotating shaft holder 10, circular frame 20, positioning frame 30, and slope 40, is installed directly on the installation surface G of the turntable. This makes it possible to reduce the height from the installation surface G of the turntable 1 to the surface of the running plate 56a of the rotating plate 50, on which the wheels of the vehicle T using the turntable 1 ride. Therefore, the height of the turntable 1 itself can be reduced without digging the ground, such as in a pit, and the effort and cost of digging the ground is not required.

[0071] Furthermore, since it does not have a stand or the like as in the conventional turntable 1, it is light in weight and is advantageous for transportation. It is also possible to reduce the cost of components such as stands.

[0072] Furthermore, since the turntable 1 of this embodiment is configured so that the rotating shaft holder 10, circular frame 20, and positioning frame 30 are in contact with each other, the turntable 1 can be easily installed in an accurate position by simply installing any one of the rotating shaft holder 10, circular frame 20, and positioning frame 30 in the correct installation position for the turntable 1. In particular, by fixing the positioning frame 30 in a position that does not affect the height of the turntable 1 and then fitting and installing the other rotating shaft holder 10 and circular frame 20, the height of the turntable 1 can be further reduced.

[0073] Furthermore, in the turntable 1 of this embodiment, two rotation means 60 are arranged inside the rotation plate 50. Since the two rotation means 60 are driven in cooperation with each other, even a heavy vehicle T can be rotated easily.

[0074] Furthermore, the turning means 60 is provided on the turning plate 50 below the cover portion 51a, which is below the chassis of the vehicle T, rather than on the running path portion 56 on which the wheels of the vehicle T ride when the vehicle T is placed on it. This minimizes the effect that the size of the turning means 60 held within the turning plate 50 has on the height of the turntable 1, allowing the turntable 1 to be formed lower.

[0075] Furthermore, in the turntable 1 of this embodiment, the two rotating means 60 are arranged inside the rotating plate 50 in point symmetry around the rotation center and are connected by electrical wiring, which makes the electrical wiring complicated and raises the risk of the electrical wiring being disconnected due to the rotation of the rotating plate 50. In this configuration, a cable holding unit 16 is provided on the rotating shaft holding base 10, which is the rotation center, and the electrical wiring is bent and wound around and stored between the cable holding unit 16 and the rotating shaft fixing unit 12, from which the two rotating means 60 are connected by electrical wiring. This prevents the wiring from becoming complicated. Furthermore, the rotation of the rotating plate 50 is controlled to rotate forward and backward within a range of 180 degrees. This prevents the electrical wiring from being disconnected.

[0076] Furthermore, the control of the rotating plate 50 by the control means through operation of the operating unit 70 causes the rotating plate 50 to rotate forward and backward within a range of 180 degrees, making it easy to program the control means and preventing the user from operating the turntable 1 incorrectly.

[0077] The present invention has been described above by citing a preferred embodiment, but the present invention is not limited to this embodiment, and various improvements and design changes are possible as described below, without departing from the spirit of the present invention.

[0078] For example, although the rotating shaft holder 10, circular frame 20, positioning frame 30, and slope 40 constituting the support side portion 2 have been described as separate components, at least two of them may be formed as a single unit. For example, the connecting portions of the positioning frame 30 and slope 40 may be connected as a single unit by welding or other means. Alternatively, a portion of each component may be integrated with another component. For example, the four ends of the holder 11 of the rotating shaft holder 10 that contact the inner circumferential surface of the side wall of the side wall annular member 21a of the circular frame 20 may be connected as a single unit by welding or other means, and the rotating shaft fixing portion 12 attached to the holder 11 with bolts and other components may be included as components of the rotating shaft holder 10. In this manner, in this embodiment, some or all of the components constituting the support side portion 2 may be integrated with the connected members.

[0079] For example, the rotation pressing portion 65c is not limited to a drive roller, and may be, for example, a tire. The tire may be, for example, two unique tires inserted into the drive shaft 65b. Although a tilt tank is exemplified as the moving member 58, other moving members 58 such as a tilt roller may be used as long as they can support the rotating plate 50 and the vehicle T and move.

[0080] In addition, in the above example, the operation unit 70 is provided on the vehicle T with a right-hand drive, but if the user's vehicle T has a left-hand drive, the operation unit 70 may be provided accordingly. Alternatively, the operation unit 70 may be provided in four locations so that the vehicle T can be used with either a right-hand drive or a left-hand drive.

[0081] In addition, in the above example, the user operates the button 72b of the operation unit 70 having the stand portion 71 from the vehicle T, but the operation unit 70 may be provided outside the vehicle T so that it can be operated by someone who is not in the vehicle T. Furthermore, the operation unit 70 may be operable by a radio or the like so that the rotating plate 50 can be rotated from either inside or outside the vehicle. [Explanation of symbols]

[0082] 1 turntable 2 Support Side 3 Rotating side 10 Rotating shaft holder 16 Cable holder 20 circular frames 30 Positioning frame 40 Slope 50 Rotating plate 60 Rotation means 60c Rotating pressure part 70 Operation section G Installation surface

Claims

1. a rotation axis holder installed at the rotation center; a circular frame in which the rotary shaft holder is in contact with an inner peripheral side of the annular shape; a positioning frame that holds the outer periphery of the circular frame from both sides to position it; a ramp attached to the positioning frame; a support side portion comprising: a rotating plate supported by the rotating shaft holder and rotating around the rotation center; a rotating means having a rotary pressing part that is held by the rotating plate and that rotates by pressing on the circular frame; a pivoting side portion comprising: a control means for driving and controlling the rotation means; an operation unit for operating the control means; and The support side is directly placed on the installation surface of the turntable. A turntable characterized by:

2. The rotating means is arranged in two positions point-symmetrically about the rotation center, the rotating means and the control means are connected by electrical wiring; the rotary shaft holder has a cable holder that stores the electrical wiring by bending and winding it around; The control means controls the rotation of the rotating plate in the forward and reverse directions within a range of 180 degrees by operating the operating portion.

2. The turntable according to claim 1.

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