Steering bridge frame of low-speed unmanned logistics vehicle

Abstract

The steering axle frame of the low-speed unmanned logistics vehicle comprises a front beam pipe, a steering frame, a connecting sleeve and the like, the connecting pipe is provided with a connecting section and a limiting section, the connecting section is inserted into the front beam pipe, and the limiting section abuts against the end of the front beam pipe; one end of the connecting joint is arranged on the connecting sleeve, and the other end is movably inserted into a steering groove of the bogie; the connecting rotating shaft is arranged on the connecting joint and is rotationally connected with the bogie; the positioning lock pin is arranged on the connecting joint and is inserted into the locking groove of the connecting rotating shaft so as to lock the connecting rotating shaft and the connecting joint; and the gasket is arranged between the connecting joint and the bogie so as to lock the axial position of the connecting joint. According to the steering axle frame, the connecting strength between the connecting joint and the front beam pipe is improved by additionally arranging the connecting sleeve, so that the connecting joint and the front beam pipe are not prone to breakage; axial positioning of the connecting rotating shaft is achieved through the positioning lock pin and the gasket, axial movement is avoided, and noise generated by axial movement is eliminated.

Description

Technical Field

[0001] This utility model relates to a low-speed unmanned logistics vehicle, and more particularly to a steering bridge for a low-speed unmanned logistics vehicle. Background Technology

[0002] Because unmanned low-speed logistics vehicles have a large load, the connection between the front beam tube and the connecting joint is prone to breakage.

[0003] In addition, there is axial movement between the connecting shaft and the bogie, which generates significant noise. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a steering bridge for a low-speed unmanned logistics vehicle, the specific technical solution of which is as follows:

[0005] A bogie for a low-speed unmanned logistics vehicle includes a front beam tube and a bogie, and further includes: a connecting sleeve having a connecting section and a limiting section, the connecting section being inserted inside the front beam tube and the limiting section abutting against the end of the front beam tube; a connecting joint, one end of which is disposed on the connecting sleeve and the other end being movably inserted into the steering groove of the bogie; a connecting shaft disposed on the connecting joint and rotatably connected to the bogie; a positioning locking pin disposed on the connecting joint and inserted into the locking groove of the connecting shaft to lock the connecting shaft and the connecting joint; and a gasket disposed between the connecting joint and the bogie to lock the axial position of the connecting joint.

[0006] Preferably, it further includes: a connecting pin, which is connected to the connecting sleeve and the front beam tube respectively.

[0007] Preferably, one end of the connecting joint is provided with a connecting post for insertion into the connecting sleeve.

[0008] Preferably, it further includes: a locking nut, which is connected to a locking threaded post at one end of the positioning locking pin and abuts against the connecting joint; the side of the positioning locking pin is also provided with a pressing slope, which abuts against the bottom of the locking groove; wherein, the locking nut causes the pressing slope to be pressed into the locking groove by the locking threaded post.

[0009] Furthermore, the clamping inclined surface is provided with clearance grooves on both sides.

[0010] Furthermore, the end of the connecting shaft is provided with a rotating groove.

[0011] Preferably, it further includes: a thrust ball bearing, disposed on the connecting shaft and located between the connecting joint and the steering groove.

[0012] Preferably, it further includes: a rotating bushing, disposed at one end of the bogie, and movably inserted into one end of the connecting shaft.

[0013] Furthermore, it also includes: a tapered roller bearing disposed between the connecting shaft and the bogie; a positioning bushing disposed at one end of the tapered roller bearing; and a first cover plate disposed on the bogie and abutting against the positioning bushing.

[0014] Furthermore, the connecting shaft is provided with an annular oil groove and an axial oil groove, and the annular oil groove communicates with the axial oil groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention provides a steering bridge for a low-speed unmanned logistics vehicle. By adding a connecting sleeve, the strength of the connection between the connecting joint and the front beam tube is improved, making it less likely for the connecting joint and the front beam tube to break. The axial positioning of the connecting shaft is achieved by using a positioning locking pin and a washer, which avoids axial movement and eliminates the noise caused by axial movement. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this application;

[0018] Figure 2 This is a front view of this application;

[0019] Figure 3 This is a cross-sectional view of this application;

[0020] Figure 4 This is a perspective view of the assembly at one end of the front beam tube that is hidden in this application;

[0021] Figure 5 It is along Figure 4 A cross-sectional view of the connecting shaft in the middle;

[0022] Figure 6 It is along Figure 4 A cross-sectional view of the center positioning locking pin;

[0023] Figure 7 yes Figure 4 Exploded view;

[0024] Figure 8 This is a three-dimensional view from the first perspective of the connecting axis;

[0025] Figure 9 This is a three-dimensional view from the second perspective of the connecting axis;

[0026] Figure 10 It is a 3D view of the positioning locking pin;

[0027] Figure 11 This is a front view of the positioning locking pin. Detailed Implementation

[0028] The present invention will now be further described with reference to the accompanying drawings.

[0029] like Figures 1 to 11 As shown, a steering bridge for a low-speed unmanned logistics vehicle includes a front beam tube 1, a bogie 5, a connecting sleeve 3, a connecting joint 2, a connecting shaft 6, a positioning locking pin 7, and a gasket 86. The connecting sleeve 3 includes a connecting section 31 and a limiting section 32, forming a stepped structure. It has an internal through hole. The connecting section 31 is inserted into the front beam tube 1, and the limiting section 32 abuts against the end of the front beam tube 1. Both the connecting section 31 and the limiting section 32 are fixed to the front beam tube 1 by welding. One end of the connecting joint 2 is fixed to the limiting section 32 of the connecting sleeve 3 by welding. The connecting sleeve 3 increases the strength at both ends of the front beam tube 1 and also improves the connection strength between the connecting joint 2 and the connecting sleeve 3, thus making the connection between the connecting joint 2 and the front beam tube 1 more stable and reliable, and less prone to breakage or detachment. The other end of the connecting joint 2 is movably inserted into the steering groove 53 of the bogie 5. The other end of the connecting joint 2 is provided with a rotating hole 21 and a limiting hole 22. The rotating hole 21 and the limiting hole 22 communicate with each other and are perpendicular to each other. The connecting shaft 6 is inserted into the rotating hole 21, and the side of the connecting shaft 6 is provided with a locking groove 61. The positioning locking pin 7 is inserted into the limiting hole 22 and into the locking groove 61 of the connecting shaft 6. The positioning locking pin 7 realizes the relative fixation between the connecting shaft 6 and the connecting joint 2, and can prevent relative movement between the connecting joint 2 and the connecting shaft 6, thus achieving the fixation between the connecting shaft 6 and the connecting joint 2. The gasket 86 is installed between the connecting joint 2 and the steering groove 53 of the bogie 5 to eliminate the gap between the connecting joint 2 and the steering groove 53, thereby locking the axial position of the connecting joint 2, eliminating axial movement, eliminating the noise generated by axial movement, and also improving stability.

[0030] Gasket 86 is made of aluminum bronze. Gasket 86 is usually placed at both ends of connector 2. The thickness of gasket 86 can be adjusted as needed.

[0031] To further improve the reliability of the connection between the connecting sleeve 3 and the front beam tube 1, and to facilitate assembly and welding positioning, a connecting pin 4 is also included. The connecting pin 4 is connected to both the connecting sleeve 3 and the front beam tube 1. The connecting sleeve 3 has a second pin hole, and both ends of the front beam tube 1 have first pin holes 11. The connecting pin 4 is inserted into the first pin holes 11 and the second pin hole, respectively. Both ends of the connecting pin 4 are welded into the first pin holes 11.

[0032] To further enhance the connection strength between the connecting joint 2 and the connecting sleeve 3, a connecting post 21 is provided at one end of the connecting joint 2. The connecting post 21 is inserted into the inside of the connecting sleeve 3, that is, the connecting post 21 is inserted into the inside of the connecting sleeve 3 from the limiting section 32. The end of the connecting joint 2 is also welded, so that both the outside and inside of the connecting sleeve 3 are welded to the connecting joint 2, effectively ensuring the connection strength and reliability between the two.

[0033] To facilitate the clamping of the positioning locking pin 7 onto the connecting shaft 6, a clamping bevel 71 is provided on the side of the positioning locking pin 7. The clamping bevel 71 is inclined relative to the axis of the positioning locking pin 7, forming a wedge-shaped structure, and abuts against the bottom of the locking groove 61. A locking threaded post 72 is provided at the top of the positioning locking pin 7, which is connected to a locking nut. The locking nut abuts against the connecting joint 2, driving the positioning locking pin 7 to move axially. This causes the clamping bevel 71 to continuously clamp the locking groove 61, thus keeping the position of the connecting shaft 6 within the rotating hole 21 unchanged, achieving axial positioning and preventing the connecting shaft 6 from axially shifting on the connecting joint 2. The clamping bevel 71 also prevents the positioning locking pin 7 from axially shifting within the locking hole.

[0034] To prevent interference, the two sides of the pressing slope 71 are provided with relief grooves 73. The relief grooves 73 are arranged opposite to the tops of the two sides of the locking groove 61 to prevent the outer circular surface of the positioning locking pin 7 from abutting against the tops of the two sides of the locking groove 61.

[0035] To facilitate the rotation of the connecting shaft 6 so that the locking groove 61 is aligned with the locking hole, the end of the connecting shaft 6 is provided with a rotating groove 65. The rotating groove 65 can be a slotted groove or a cross groove, which is used to insert a tool to drive the connecting shaft 6 to rotate.

[0036] To improve rotational performance and axial load capacity, a thrust ball bearing 85 is also included. The thrust ball bearing 85 is movably mounted on the connecting shaft 6 and is located between the connecting joint 2 and the steering groove 53. The two ends of the thrust ball bearing 85 abut against one end of the connecting joint 2 and one side of the steering groove 53, respectively. Shims 86 can also be installed at both ends of the thrust ball bearing 85.

[0037] Furthermore, to reduce the friction between the connecting shaft 6 and the bogie 5 and make the rotation smoother, both ends of the connecting shaft 6 are equipped with a rotating mechanism, specifically including a rotating bushing 87, a second cover plate 88, a tapered roller bearing 83, a positioning bushing 82, and a first cover plate 81. The rotating bushing 87 is installed in the second shaft hole 52 at one end of the bogie 5 and is movably inserted into one end of the connecting shaft 6; the second cover plate 88 is fixed on the bogie 5 and located on top of the second shaft hole 52. There is also a sealing gasket between the second cover plate 88 and the bogie 5 to seal the second shaft hole 52 and protect the internal rotating bushing 87. The second cover plate 88 can also abut against the rotating bushing 87 to achieve positioning of the rotating bushing 87. The outer ring of the tapered roller bearing 83 is inserted into the connecting shaft 63 at the other end of the connecting shaft 6 and abuts against the shaft shoulder. The outer ring of the tapered roller bearing 83 is installed in the first shaft hole 51. The positioning sleeve 82 is installed in the first shaft hole 51 and abuts against the outer ring of the tapered roller bearing 83. The first cover plate 81 is fixed to the bogie 5 with screws and abuts against the positioning sleeve 82 to achieve axial positioning of the tapered roller bearing 83. There is also a sealing gasket between the first cover plate 81 and the bogie 5 to seal the first shaft hole 51.

[0038] To improve lubrication performance, facilitate the addition of lubricating oil, and achieve comprehensive lubrication, the connecting shaft 6 is provided with an annular oil groove 62 and an axial oil groove 64, and the annular oil groove 62 and the axial oil groove 64 are connected. Both the annular oil groove 62 and the axial oil groove 64 are located on the outer circular surface of the connecting shaft 6, which facilitates the flow of lubricating oil and allows the lubricating oil to be distributed on the outer circular surface of the connecting shaft 6.

[0039] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. A bogie for a low-speed unmanned logistics vehicle, comprising a front beam tube (1) and a bogie (5), characterized in that, Also includes: The connecting sleeve (3) is provided with a connecting section (31) and a limiting section (32). The connecting section (31) is inserted into the interior of the front beam tube (1), and the limiting section (32) abuts against the end of the front beam tube (1). The connecting joint (2) has one end located on the connecting sleeve (3) and the other end movably inserted into the steering groove (53) of the bogie (5); A connecting shaft (6) is provided on the connecting joint (2) and is rotatably connected to the bogie (5); A positioning locking pin (7) is provided on the connecting joint (2) and inserted into the locking groove (61) of the connecting shaft (6) to lock the connecting shaft (6) and the connecting joint (2); and A gasket (86) is provided between the connecting joint (2) and the bogie (5) to lock the axial position of the connecting joint (2).

2. The steering bridge of a low-speed unmanned logistics vehicle according to claim 1, characterized in that, Also includes: The connecting pin (4) is connected to the connecting sleeve (3) and the front beam tube (1) respectively.

3. The steering bridge of a low-speed unmanned logistics vehicle according to claim 1, characterized in that, One end of the connecting joint (2) is provided with a connecting post (21) for insertion into the connecting sleeve (3).

4. The steering bridge of a low-speed unmanned logistics vehicle according to claim 1, characterized in that, Also includes: A locking nut is connected to a locking threaded post (72) at one end of the positioning locking pin (7) and abuts against the connecting joint (2); The side of the positioning locking pin (7) is also provided with a pressing slope (71), which abuts against the bottom of the locking groove (61); The locking nut, through the locking threaded post (72), causes the pressing inclined surface (71) to press into the locking groove (61).

5. The steering bridge of a low-speed unmanned logistics vehicle according to claim 4, characterized in that, The clamping inclined surface (71) is provided with clearance grooves (73) on both sides.

6. The steering bridge of a low-speed unmanned logistics vehicle according to claim 1, characterized in that, The end of the connecting shaft (6) is provided with a rotating groove (65).

7. A steering bridge for a low-speed unmanned logistics vehicle according to any one of claims 1 to 6, characterized in that, Also includes: A thrust ball bearing (85) is disposed on the connecting shaft (6) and located between the connecting joint (2) and the steering groove (53).

8. A steering bridge for a low-speed unmanned logistics vehicle according to any one of claims 1 to 6, characterized in that, Also includes: Rotary bushing (87) is located at one end of the bogie (5) and is movably inserted into one end of the connecting shaft (6).

9. The steering bridge of a low-speed unmanned logistics vehicle according to claim 8, characterized in that, Also includes: A tapered roller bearing (83) is disposed between the connecting shaft (6) and the bogie (5); A positioning sleeve (82) is provided at one end of the tapered roller bearing (83); and The first cover plate (81) is disposed on the bogie (5) and abuts against the positioning bushing (82).

10. The steering bridge of a low-speed unmanned logistics vehicle according to claim 9, characterized in that, The connecting shaft (6) is provided with an annular oil groove (62) and an axial oil groove (64), and the annular oil groove (62) and the axial oil groove (64) are connected.

Images