Working vehicle and supporting leg device thereof

Abstract

The utility model relates to a landing leg device, in order to solve the problem that a foot sole and a landing leg collide with each other when the landing leg of an existing landing leg device is folded, the landing leg device of the working vehicle comprises the landing leg and the foot sole, the upper end of the landing leg is provided with a mounting pin shaft hole and an oil cylinder connecting pin shaft hole, and the oil cylinder connecting pin shaft hole is connected with the foot sole. The foot sole is rotationally connected to the lower end of the supporting leg through a foot sole pin shaft, and the axis of the mounting pin shaft hole, the axis of the oil cylinder connecting pin shaft hole and the axis of the foot sole pin shaft are parallel to one another; a buffer pad is fixed on the supporting leg, and when the lower end of the supporting leg is folded upwards, the lower side edge of the sole is attached to the buffer pad. According to the utility model, the buffer pad is arranged on the supporting leg, and the foot sole leans against the buffer pad after the lower end of the supporting leg is folded upwards, so that the foot sole is prevented from directly and rigidly colliding with the supporting leg when the working vehicle walks.

Description

Technical Field

[0001] The utility model relates to a leg device, and more specifically, to a working vehicle and its leg device. Background Art

[0002] Some working machines such as wheeled excavators are usually equipped with leg devices. When working, the leg devices are used to support the ground to improve the stability during operation, and the leg devices are retracted when the machine moves.

[0003] On some working machines, the leg device is installed in a hinged manner, that is, the upper end of the leg device is connected to the vehicle frame and the leg cylinder through a pin shaft. When the ground needs to be supported, the leg cylinder pushes the leg to flip so that its lower end touches the ground. When the leg needs to be retracted, the leg cylinder pushes the leg to flip upward so that the lower end of the leg faces upward.

[0004] To increase the contact area between the leg and the ground, a sole is usually provided at the lower end of the leg. The sole is connected to the leg through a pin shaft, and the sole can rotate freely relative to the leg around the pin shaft within a certain range so as to adapt to a certain range of inclined ground when supporting the ground. For such a leg device, when the leg is retracted until the lower end faces upward, the sole rotates under its own gravity until one side of it abuts against the leg. At this time, if the working vehicle is in a driving state, the vibration during its driving will cause the sole to vibrate, and the side of the sole that abuts against the leg will collide with the leg frequently, resulting in damage to the paint on the surface of the leg, affecting the appearance of the leg. At the same time, the collision between the sole and the leg is a rigid collision, and the collision will generate noise. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is the problem of mutual collision between the sole and the leg when the leg is retracted in the existing leg device, and to provide a working vehicle and its leg device.

[0006] The technical solution for the utility model to achieve its purpose is: a leg device of a working vehicle, including a leg and a sole. The upper end of the leg has a mounting pin hole and an oil cylinder connection pin hole. The sole is rotatably connected to the lower end of the leg through a sole pin. The axis lines of the mounting pin hole, the oil cylinder connection pin hole and the sole pin are parallel to each other. A buffer pad is fixed on the leg. When the lower end of the leg is retracted upward, the lower side of the sole abuts against the buffer pad.

[0007] In the leg device of the working vehicle of the utility model, the lower side of the sole and the buffer pad are in surface contact.

[0008] In the utility model of the working vehicle outrigger device, the lower side of the sole of the foot has a bending portion tilted toward the direction away from the ground on which the sole of the foot touches the ground, and the buffer pad has a ridge-like protrusion; the side of the bending portion facing away from the ground on which the sole of the foot touches the ground is in contact with the side of the ridge-like protrusion; the side of the ridge-like protrusion used to cooperate with the bending portion is parallel to the axis of the sole of the foot pin shaft.

[0009] In the utility model of the outrigger device for the working vehicle, the sole comprises a sole plate and two pin connecting plates vertically welded to the sole plate and facing away from the ground, and the bending portion is arranged on the sole plate.

[0010] In the outrigger device of the working vehicle of the utility model, the outrigger is a box-shaped structure, and the buffer pad is fixed to the side plate on one side of the outrigger by means of mounting bolts.

[0011] In the utility model of the outrigger device for the working vehicle, the mounting hole on the side plate of the outrigger for cooperating with the mounting bolt is a long hole, and the length direction of the mounting hole is the length direction of the outrigger.

[0012] In the outrigger device of the utility model for a working vehicle, a mounting plate is attached and fixed to the side plate of the outrigger, and the mounting hole passes through the mounting plate and the side plate of the outrigger.

[0013] In the outrigger device of the utility model for a working vehicle, a nut block for being thread-matched and connected with the mounting bolt is provided on the inner side of the outrigger side plate.

[0014] In the utility model of the outrigger device for the working vehicle, an adjusting gasket is arranged between the buffer pad and the mounting plate.

[0015] The technical solution for achieving the purpose of the utility model is: a working vehicle having the above-mentioned working vehicle outrigger device. The working vehicle is a wheeled vehicle, such as a wheeled excavator, a backhoe loader, etc.

[0016] Compared with the prior art, in the utility model, a buffer pad is arranged on the outrigger, and the sole of the foot is pressed against the buffer pad after the lower end of the outrigger is folded upward, so as to avoid direct rigid collision between the sole of the foot and the outrigger when the working vehicle is walking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the outriggers in the outrigger device of the utility model.

[0018] Figure 2 The utility model is a schematic diagram of the installation of the buffer pad on the outrigger in the outrigger device.

[0019] Figure 3 This is a schematic diagram of the state of the outrigger device of the utility model on the operating machinery Figure 1 .

[0020] Figure 4 It is a schematic diagram of the state of the outrigger device of the present utility model on a working machine. Figure 2 .

[0021] Figure 5 It is a schematic diagram of the retracted state of the outrigger of the outrigger device of the present utility model.

[0022] Figure 6 It is Figure 5 The partial enlarged view at position A in

[0023] Names and serial numbers of components in the figure:

[0024] Outrigger 10, cylinder connection pin hole 11, mounting pin hole 12, sole pin hole 13, side plate 14.

[0025] Buffer pad 20, ridge protrusion 21.

[0026] Mounting bolt 31, nut block 32, mounting plate 33, mounting hole 331, adjusting gasket 34.

[0027] Sole 40, sole plate 41, bending part 411, pin connection plate 42.

[0028] Mounting pin 51, cylinder connection pin 52, sole pin 53.

[0029] Frame 61, outrigger cylinder 62. Specific embodiments

[0030] The following describes the specific implementation manners in conjunction with the accompanying drawings.

[0031] As Figure 3 shown, the outrigger device of the working vehicle includes an outrigger 10 and a sole 40.

[0032] As Figure 1 shown, the upper end of the outrigger 10 has a mounting pin hole 12 and a cylinder connection pin hole 11, and the lower end has a sole pin hole 13. The sole 40 is rotatably connected to the lower end of the outrigger 10 through a sole pin 53 installed in the sole pin hole 13. The axis lines of the mounting pin hole 12, the cylinder connection pin hole 11, and the sole pin hole 13 are parallel to each other; a buffer pad 20 is fixed on the outrigger 10. As Figure 4 shown, when the lower end of the outrigger 10 is retracted upward, the lower side of the sole 40 abuts against the buffer pad 20.

[0033] Optionally, as Figure 1 shown, the outrigger 10 is of a box structure, and the buffer pad 20 is fixed to the side plate 14 on one side of the outrigger 10 through a mounting bolt 31.

[0034] As Figure 2As shown, the mounting hole 331 on the side plate 14 of the leg 10 for cooperating with the mounting bolt 31 is a long hole, and the length direction of the mounting hole 331 is the length direction of the leg 10 ( Figure 1 direction of the arrow in the figure).

[0035] Optionally, a mounting plate 33 is attached and fixed to the side plate 14 of the leg 10, and a mounting hole 331 passes through the mounting plate 33 and the side plate 14 of the leg 10. A nut block 32 for threadedly matching with the mounting bolt 31 is provided on the inner side of the side plate 14 of the leg 10 (i.e., in the inner cavity of the box of the leg 10). An adjusting gasket 34 is provided between the buffer pad 20 and the mounting plate 33. The adjusting gasket 34 and the buffer pad 20 are sequentially stacked on the mounting plate 33, and the mounting bolt 31 passes through the holes on the buffer pad 20 and the adjusting gasket 34 and the mounting hole 331 in turn, and then matches with the threaded hole on the nut block 32, so that the buffer pad 20 is fixed on the leg 10.

[0036] Optionally, the mounting hole 331 is a long hole, so that the buffer pad 20 can be adjusted in the length direction of the mounting hole 331, thereby adjusting the mounting position of the buffer pad 20 to better fit the sole 40. The adjusting washer 34 is used to adjust the distance between the buffer pad 20 and the side plate 14 of the leg 10, so that the buffer pad 20 just contacts the sole 40 when the leg 10 is in the retracted state. The nut block 32 is provided with a threaded hole that is matched with the mounting bolt 31, and each nut block 32 is provided with two threaded holes. Each nut block 32 is matched with two mounting bolts 31 at the same time, so that when the mounting bolt 31 is rotated, the nut block 32 will not rotate with the mounting bolt 31.

[0037] Optionally, the lower side of the sole 40 is in surface contact with the cushion 20. Figure 5 As shown, the lower side of the sole 40 has a bending portion 411 that is tilted toward the direction away from the sole contacting ground, and the cushioning pad 20 has a ridge-like protrusion 21; the side of the bending portion 411 that is away from the sole contacting ground is in contact with the side of the ridge-like protrusion 21; the side of the ridge-like protrusion 21 that is used to cooperate with the bending portion 411 is parallel to the axis of the sole pin shaft 53.

[0038] Alternatively, if Figure 3 As shown, the sole 40 includes a sole plate 41, two pin connecting plates 42 vertically welded to the sole plate 41 and facing away from the ground, and a bent portion 411 is arranged on the sole plate 41. The two parallel pin connecting plates 42 are connected to the leg 10 through the sole pin 53. Figure 5 As shown, the lower end of the leg 10 is turned upward under the action of the leg oil cylinder 62. During the turning process of the leg 10, the sole 40 rotates around the sole pin 53 under the action of gravity, and finally the bent portion 411 on the sole plate 40 fits with the side of the ridge-like protrusion 21 on the cushion 20, as shown in FIG.Figure 6 As shown, during the driving of the work vehicle, the vibration generated will cause the sole 40 to sway around the sole pin shaft 53. The swaying of the sole 40 will not hit the outrigger 10 and will not have an adverse effect on the outrigger 10.

[0039] In this embodiment, the buffer pad can be a polyurethane plate or a rubber pad, etc.

[0040] This embodiment also provides a work vehicle, which has the aforementioned outrigger device of the work vehicle, such as Figure 3 As shown, the upper end of the outrigger is connected to the vehicle frame 61 and the outrigger cylinder 62 through the mounting pin shaft 51 and the cylinder connection pin shaft 52 respectively. When the outrigger cylinder 62 extends, the lower end of the outrigger 10 turns downward, and the sole 40 at the lower end of the outrigger 10 rotates under the action of its own gravity. When the lower end of the outrigger 10 drops to a certain height, the sole plate 41 of the sole 40 touches the ground to support the vehicle frame. When the outrigger cylinder 62 retracts, the lower end of the outrigger 10 turns upward. During the turning process, the sole 40 rotates relative to the outrigger 10 around the sole pin shaft 53, and finally the lower bending part 411 on the sole plate 41 fits against the buffer pad 20, as Figure 5 As shown. The work vehicle is a wheeled vehicle, such as a wheeled excavator, an excavator-loader, etc.

[0041] In the work vehicle and its outrigger device provided by the present utility model, a buffer pad is provided on the outrigger. After the sole at the lower end of the outrigger is retracted upward, it abuts against the buffer pad, avoiding direct rigid collision between the sole and the outrigger when the work vehicle is moving, which affects the appearance of the outrigger.

Claims

1. A outrigger device for a work vehicle, comprising outriggers and a sole plate. The upper end of the outrigger has a mounting pin shaft hole and an oil cylinder connection pin shaft hole. The sole plate is rotatably connected to the lower end of the outrigger through a sole plate pin shaft. The axis lines of the mounting pin shaft hole, the oil cylinder connection pin shaft hole, and the sole plate pin shaft are parallel to each other. It is characterized in that, A buffer pad is fixed on the supporting leg, and when the lower end of the supporting leg is folded upward, the lower side of the sole of the foot is against the buffer pad.

2. The outrigger device of the work vehicle according to claim 1, characterized in that, The lower side of the sole is in surface contact with the buffer pad.

3. The outrigger device of the work vehicle according to claim 1, wherein The lower side of the sole has a bending portion that is tilted toward the direction away from the sole contacting ground, and the buffer pad has a ridge-like protrusion; the side of the bending portion that is away from the sole contacting ground is in contact with the side of the ridge-like protrusion; the side of the ridge-like protrusion that is used to cooperate with the bending portion is parallel to the axis of the sole pin shaft.

4. The outrigger device of the work vehicle according to claim 3, wherein, The sole comprises a sole plate and two pin connecting plates vertically welded to the sole plate and facing away from the ground, and the bending portion is arranged on the sole plate.

5. The outrigger device of the work vehicle according to claim 3 or 4, characterized in that The supporting leg is a box-shaped structure, and the buffer pad is fixed to the side plate on one side of the supporting leg by installing bolts.

6. The outrigger device of the work vehicle according to claim 5, characterized in that, The mounting holes on the side plates of the supporting legs for cooperating with the mounting bolts are long holes, and the length direction of the mounting holes is the length direction of the supporting legs.

7. The outrigger device of the work vehicle according to claim 6, characterized in that, A mounting plate is attached and fixed to the side plate of the leg, and the mounting hole passes through the mounting plate and the side plate of the leg.

8. The outrigger device of the work vehicle according to claim 7, characterized in that, A nut block for thread-matching connection with the mounting bolt is provided on the inner side of the leg side plate.

9. The outrigger device of the work vehicle according to claim 7 or 8, characterized in that, An adjusting gasket is arranged between the buffer pad and the mounting plate.

10. An operation vehicle, characterized in that, A working vehicle outrigger device according to any one of claims 1 to 9.

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