Articulated dumper and suspension thereof

Abstract

The utility model relates to a hinged dumper suspension, in particular to a hinged dumper and a suspension thereof, which comprises a frame, an axle and an A-shaped frame. The A-shaped frame is fixedly connected with the front side face of the axle, and the front end of the A-shaped frame is connected with a frame. Two suspension supports are arranged on the rear side face of the axle, a shock absorber and a rubber spring are installed on the suspension support on each side, and the upper ends of the shock absorbers and the upper ends of the rubber springs are fixedly connected with a frame. The rubber spring and the shock absorber are used for connecting the axle and the frame, lubrication and oil gas are not involved in the using process of the rubber spring and the shock absorber, sealing and abrasion are avoided, and the suspension maintenance-free function is achieved.

Description

Technical Field

[0001] The utility model relates to a suspension of an articulated dump truck, and more specifically, to an articulated dump truck and its suspension. Background Art

[0002] Existing articulated dump trucks usually adopt oil-gas suspensions. The oil-gas suspension structure includes a suspension oil cylinder and an A-frame. The upper and lower ends of the suspension oil cylinder are connected to the vehicle frame and the axle by spherical plain bearings, and the front end of the A-frame is connected to the vehicle frame by a spherical plain bearing.

[0003] Articulated dump trucks mainly work in mining areas, where the working conditions are dusty and sandy. Dust and sand enter the spherical plain bearings of the suspension oil cylinder and the A-frame, resulting in bearing wear and difficult maintenance. In addition, dust and sand are also likely to enter the suspension oil cylinder, leading to increased wear of the sealing parts of the suspension oil cylinder and frequent oil leakage of the suspension oil cylinder. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is the problem that the existing articulated dump truck adopts an oil-gas suspension and is easily worn due to dust, resulting in failures, and provides an articulated dump truck and its suspension.

[0005] The technical solution of the utility model to achieve its purpose is: a suspension of an articulated dump truck, including a vehicle frame, an axle, and an A-frame; the A-frame is fixedly connected to the front side of the axle and is connected to the vehicle frame at the front end; two suspension supports are provided on the rear side of the axle, and a shock absorber and a rubber spring are installed on each side of the suspension support, and the upper ends of the shock absorber and the rubber spring are fixedly connected to the vehicle frame.

[0006] In the suspension of the articulated dump truck of the utility model, the front side of the suspension support is attached to the rear side of the axle and is detachably and fixedly connected to the axle by bolts.

[0007] In the suspension of the articulated dump truck of the utility model, the shock absorber and the rubber spring are arranged outside the longitudinal beam of the vehicle frame, and the rubber spring is located in front of the shock absorber.

[0008] In the suspension of the articulated dump truck of the utility model, the shock absorber is composed of a plurality of double-tube shock absorbers installed in parallel.

[0009] In the suspension of the articulated dump truck of the utility model, a shock absorber connection seat is fixed on the outer side surface of the longitudinal beam of the vehicle frame, and the shock absorber connection seat is composed of a U-shaped bent plate with an opening facing downwards.

[0010] In the suspension of the articulated dump truck of the utility model, a rubber spring connection seat in the shape of a cylinder for connecting the upper end of the rubber spring is fixed on the outer side surface of the longitudinal beam of the vehicle frame.

[0011] In the suspension of the articulated dump truck of the present utility model, at least one of the two suspension supports is provided with a tie rod interface for connecting one end of the tie rod at the inner side position of the shock absorber connection port, and the other end of the tie rod is connected to the tie rod connection seat on the vehicle frame.

[0012] In the suspension of the articulated dump truck of the present utility model, a rubber bearing connected to the vehicle frame is installed at the front end of the A-frame, and the axis of the pin shaft of the rubber bearing is parallel to the axle.

[0013] In the suspension of the articulated dump truck of the present utility model, a stepped through hole is provided at the front end of the A-frame, the rubber bearing is installed in the stepped through hole, and an end cover for fixing the rubber bearing is installed at the large end of the stepped through hole.

[0014] The technical solution adopted by the present utility model to achieve its purpose is: an articulated dump truck having the aforementioned articulated dump truck suspension.

[0015] Compared with the prior art, the present utility model uses rubber springs and shock absorbers to connect the axle and the vehicle frame. The rubber springs and shock absorbers do not involve lubrication and oil and gas during use, and there will be no problems of sealing and wear, realizing the function of suspension maintenance-free. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the suspension of the articulated dump truck of the present utility model.

[0017] Figure 2 is a schematic structural diagram of the bottom surface of the vehicle frame in the suspension of the articulated dump truck of the present utility model.

[0018] Figure 3 is a schematic structural diagram of the suspension support in the suspension of the articulated dump truck of the present utility model.

[0019] Figure 4 is a schematic structural diagram of the A-frame in the suspension of the articulated dump truck of the present utility model.

[0020] Figure 5 is a schematic structural diagram of the rubber bearing in the suspension of the articulated dump truck of the present utility model.

[0021] Figure 6 is a schematic diagram of the structure of the suspension of the articulated dump truck of the present utility model Figure 2 .

[0022] Names and serial numbers of components in the figure:

[0023] Vehicle frame 10, A-frame connection seat 11, shock absorber connection seat 12, rubber spring connection seat 13, tie rod connection seat 14.

[0024] Shock absorber 20.

[0025] Rubber spring 30.

[0026] Suspension support 40, rubber spring interface 41, shock absorber interface 42, cross tie rod interface 43, bolt holes 44.

[0027] Axle 50.

[0028] Type A frame 60, rubber bearing 61, pin shaft 611, rubber 612, outer wall of bearing 613, end cover 614, mounting bolts 615, connecting seat 62, stepped through hole 621, box-shaped frame 63.

[0029] Cross tie rod 70. Specific implementation mode

[0030] The specific implementation scheme will be described below with reference to the accompanying drawings.

[0031] Figures 1 to 6 The articulated dump truck suspension structure in this embodiment is shown.

[0032] As Figure 1 shown, the articulated dump truck suspension includes a vehicle frame 10, an axle 50, a Type A frame 60, and a cross tie rod 70. The Type A frame 60 is fixedly connected to the front side of the axle 50, and the front end of the Type A frame 60 is connected to the vehicle frame 10. Two suspension supports 40 are provided on the rear side of the axle 10, and a shock absorber 20 and a rubber spring 30 are installed on each side of the suspension support 40. The upper ends of the shock absorber 20 and the rubber spring 30 are fixedly connected to the vehicle frame 10.

[0033] As Figure 3 shown, the front side of the suspension support 40 is a plane, and this plane fits against the rear side of the axle 10. A plurality of bolt holes 44 are provided at the front end of the suspension support 40, and bolts can be inserted into the bolt holes to be detachably and fixedly connected to the axle 10. A rubber spring interface 41, a shock absorber interface 42, and a cross tie rod interface 43 are provided on the suspension support 40. Among them, the rubber spring interface 41 is located in front of the shock absorber interface 42, and the cross tie rod interface 43 is located inside the shock absorber interface 42, that is, the cross tie rod interface 43 is located on the side of the shock absorber interface 42 facing the middle plane of the vehicle frame. An installation hole is provided in the shock absorber interface 42, and the shock absorber is fixedly connected by bolts. An installation hole is provided in the rubber spring interface 41, and the rubber spring can be fixedly connected by bolts. A threaded hole is provided in the cross tie rod interface 43, and the cross tie rod 70 can be connected by bolts.

[0034] As Figure 1 Figure 2As shown in the figure, the shock absorber 20 and the rubber spring 30 are arranged outside the corresponding side longitudinal beams of the vehicle frame 10. The vehicle frame 10 has two left and right longitudinal beams, and the shock absorber 20 and the rubber spring 30 are arranged outside the longitudinal beams on each side. The shock absorber 20 is composed of three double-tube shock absorbers installed in parallel. The outer side surface (the side facing away from the middle surface of the vehicle frame) of the longitudinal beam of the vehicle frame 10 is fixed with a shock absorber connection seat 12, and the shock absorber connection seat 12 is composed of a U-shaped bent plate with an opening facing downwards. Three mounting holes are provided on the shock absorber connection seat 12, and it can be fixedly connected to the shock absorber 20 through bolts. The number of shock absorbers 20 is set according to needs.

[0035] A cylindrical rubber spring connection seat 13 is fixed on the outer side surface of the longitudinal beam of the vehicle frame 10. The upper end of the rubber spring 30 is fixed to the rubber spring connection seat 13. The rubber spring 30 plays a role in supporting and isolating vibration. The shock absorber 20 plays a role in quickly attenuating vibration and improving comfort.

[0036] One of the two suspension supports 40 is provided with a cross-bar interface 43. The suspension support 40 is fixedly connected to the cross-bar 70 through bolts at the cross-bar interface 43. A cross-bar connection seat 14 is provided on the longitudinal beam opposite to the longitudinal beam above the cross-bar interface 43, and the other end of the cross-bar 70 is fixedly connected to the cross-bar connection seat 14.

[0037] As Figure 4 shown, the A-shaped frame 60 includes a U-shaped box-shaped frame 63. Installation plates are provided at both rear ends of the box-shaped frame 63, and the installation plates are fixedly connected to the front side surface of the axle through bolts. A connection seat 62 is fixed at the center of the front end of the box-shaped frame 63. The connection seat 62 is a casting, and an installation hole with a stepped through-hole 621 is provided thereon. The rubber bearing 61 is installed in the stepped through-hole 621.

[0038] As Figure 5 shown, the rubber bearing 61 includes a pin shaft 611, rubber 612 wrapped around the middle part of the pin shaft 611, and a bearing outer wall 613 wrapped around the outside of the rubber 612. The rubber bearing 61 is located in the stepped through-hole 621, and both ends of its pin shaft 611 extend out from both ends of the stepped through-hole 621. An end cover 614 is installed at the large end of the stepped through-hole 621 through mounting bolts 615, and the end cover 614 fixes the rubber bearing. The axis of the pin shaft of the rubber bearing is parallel to the axle. As Figure 2 Figure 6 shown, an A-shaped frame connection seat 11 is provided on the bottom surface at the front end of the vehicle frame, and both ends of the pin shaft of the rubber bearing are fixedly connected to the A-shaped frame connection seat 11.

[0039] This embodiment also provides an articulated dump truck, which has the aforementioned articulated dump truck suspension.

[0040] In this embodiment, a rubber spring 30 and a shock absorber 20 are used to connect an axle 50 and a vehicle frame 10. An A-shaped frame 60 is connected to the vehicle frame 10 through a rubber bearing 61. The rubber spring 30, the shock absorber 20, and the rubber bearing 61 do not involve lubrication and oil-gas during use, and there will be no problems with sealing and wear, thus realizing the function of suspension maintenance-free.

Claims

1. An articulated dump truck suspension, comprising a frame, an axle, and an A-frame; the A-frame is fixedly connected to the front side of the axle, and the front end is connected to the frame; characterized in that: Two suspension supports are arranged on the rear side of the axle, and a shock absorber and a rubber spring are installed on the suspension support on each side, and the upper ends of the shock absorber and the rubber spring are fixedly connected to the vehicle frame.

2. The articulated dump truck suspension according to claim 1, characterized in that: The front side surface of the suspension support is attached to the rear side surface of the axle and is detachably fixedly connected to the axle via bolts.

3. The articulated dump truck suspension according to claim 2, characterized in that: The shock absorber and the rubber spring are arranged outside the frame longitudinal beam, and the rubber spring is located in front of the shock absorber.

4. The articulated dump truck suspension according to claim 3, characterized in that: The shock absorber is composed of a plurality of double-tube shock absorbers installed in parallel.

5. The articulated dump truck suspension according to claim 4, characterized in that: A shock absorber connection seat is fixed on the outer side surface of the longitudinal beam of the frame, and the shock absorber connection seat is composed of a U-shaped bent plate with an opening facing downward.

6. The articulated dump truck suspension according to claim 3, characterized in that: A cylindrical rubber spring connecting seat for connecting with the upper end of the rubber spring is fixed on the outer side surface of the longitudinal beam of the frame.

7. The articulated dump truck suspension according to claim 1, characterized in that: At least one of the two suspension supports is provided with a tie rod interface for connecting with one end of the tie rod at the inner side of the shock absorber interface, and the other end of the tie rod is connected with the tie rod connecting seat on the frame.

8. The articulated dump truck suspension according to any one of claims 1 to 7, characterized in that: A rubber bearing connected to the vehicle frame is installed at the front end of the A-frame, and the axis of the pin shaft of the rubber bearing is parallel to the vehicle axle.

9. The articulated dump truck suspension according to claim 8, characterized in that: The front end of the A-frame is provided with a stepped through hole, the rubber bearing is installed in the stepped through hole, and the large end of the stepped through hole is provided with an end cover for fixing the rubber bearing.

10. An articulated dump truck, characterized in that: An articulated dump truck suspension according to any one of claims 1 to 9.

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