Rear overturning structure for dumper and dumper

Abstract

The rear turnover structure comprises a turnover seat assembly and two sets of auxiliary supporting assemblies, the turnover seat assembly comprises a turnover shaft and two turnover supports which are detachably connected to the lower portion of a cargo compartment bottom plate, and the turnover supports are in running fit with the turnover shaft; the auxiliary supporting assembly comprises a lower supporting seat connected to the side portion of the auxiliary frame and an upper supporting piece connected to the bottom of the cargo compartment bottom plate, and the lower supporting seat is used for supporting the lower portion of the upper supporting piece so as to bear the cargo compartment bottom plate. According to the rear overturning structure for the dumper, the overturning support and the cargo compartment bottom plate are detachably connected, the split loading technology is achieved, potential safety hazards are reduced, the assembling efficiency of the whole dumper is improved, meanwhile, convenience is provided for later maintenance of the overturning shaft and replacement of the cargo compartment, and the maintenance cost is reduced. The two sets of auxiliary supporting assemblies can avoid the situation that the stress of the turnover shaft is increased due to the fact that the cargo compartment swings left and right, and the service life of the rear turnover structure is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering machinery dump trucks, and in particular relates to a rear overturning structure for a dump truck and the dump truck. Background Art

[0002] A dump truck is a vehicle that unloads goods by itself through hydraulic or mechanical lifting, also known as a tipping truck. The compartment of a dump truck can be divided into two types: rearward tipping and sideward tipping. The rearward tipping is more common. The hydraulic cylinder is activated by the operating system to lift the front end of the compartment upward, so that the compartment tilts backward and upward around the flip axis at the rear end.

[0003] In the prior art, the flip shaft is fixedly connected to the sub-frame, and a flip seat rotatably connected to the flip shaft is welded on the bottom plate of the cargo compartment. Before the loading process, the cargo compartment must be hoisted above the sub-frame to make the mounting shaft hole on the flip seat completely aligned with the flip shaft before loading. The installation is difficult and requires the operator to perform the installation operation under the cargo compartment in the lifted state, which poses a high safety hazard. In addition, the cargo compartment is rotatably connected to the two ends of the flip shaft through two flip seats. When the dump truck is traveling on a soft road surface, the cargo compartment is prone to vertical swing in the left and right directions, thereby applying an additional tipping moment to the flip shaft, increasing the stress on the flip shaft and affecting the service life of the flip shaft. Utility Model Content

[0004] The embodiment of the utility model provides a rear flip structure for a dump truck, which is convenient for installing a cargo compartment, improves the assembly efficiency of the entire vehicle, helps to reduce safety hazards, and at the same time prolongs the service life of the rear flip structure.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: in the first aspect, a rear flip structure for a dump truck is provided, comprising a flip seat assembly connected between a sub-frame and a cargo compartment floor, the flip seat assembly comprising a flip shaft connected to the sub-frame and two flip supports respectively detachably connected to the bottom of the cargo compartment floor, the two flip supports being located at both ends of the flip shaft in a one-to-one correspondence and being rotatably matched with the flip shaft;

[0006] Among them, two sets of auxiliary support assemblies are also provided between the subframe and the cargo compartment floor, and the two sets of auxiliary support assemblies are respectively located on the left and right sides of the cargo compartment floor. The auxiliary support assembly includes a lower support seat connected to the side of the subframe and an upper support member connected to the bottom of the cargo compartment floor. The lower support seat is used to support the bottom of the upper support member to support the cargo compartment floor.

[0007] As another embodiment of the utility model, the flip shaft includes a mounting sleeve connected to the sub-frame and two flip short shafts connected to two ends of the mounting sleeve in a one-to-one correspondence, and the flip support is rotatably connected to the flip short shafts.

[0008] As another embodiment of the present utility model, the tipping support includes a lower connecting plate, two support vertical plates respectively connected to the lower connecting plate, and a bushing horizontally penetrating through the two support vertical plates. A lubricating sleeve sleeving the outer periphery of the tipping short shaft is arranged in the bushing, and the lower connecting plate is connected to the cargo box bottom plate through a plurality of connecting pieces.

[0009] As another embodiment of the present utility model, a circumferentially extending communication groove is arranged on the outer peripheral wall of the tipping short shaft, an oil injection channel communicating with the communication groove is arranged in the tipping short shaft, an oil injection port communicating with the oil injection channel is arranged on the outer end surface of the tipping short shaft, an oil cup is connected to the oil injection port, and a helically extending oil groove communicating with the communication groove is arranged on the inner peripheral wall of the lubricating sleeve.

[0010] As another embodiment of the present utility model, the tipping support further includes a plug plate blocking the outer end of the lubricating sleeve. The plug plate is connected to the lower connecting plate, and an avoidance hole for the oil cup to pass through is arranged on the plug plate.

[0011] As another embodiment of the present utility model, the rear tipping structure for a dump truck further includes a reinforcing seat. The reinforcing seat includes a reinforcing frame connected to the cargo box bottom plate and an upper connecting plate connected to the bottom of the reinforcing frame. The upper connecting plate and the lower connecting plate are arranged corresponding to each other up and down and are connected through connecting pieces.

[0012] As another embodiment of the present utility model, two limiting blocks are connected to the bottom surface of the upper connecting plate. The two limiting blocks are respectively located at the front and rear ends of the lower connecting plate one by one and are used for limiting the front and rear positions of the reinforcing seat.

[0013] As another embodiment of the present utility model, two heightening blocks are connected to the top surface of the upper connecting plate. The two heightening blocks are respectively located on the front and rear sides of the reinforcing frame one by one, and the heightening blocks protrude from the upper connecting plate towards the side of the cargo box bottom plate.

[0014] As another embodiment of the present utility model, the upper support member is a rectangular block arranged on the side edge close to the cargo box bottom plate. The lower support seat includes a rectangular rod and an inclined rib plate. The rectangular rod is connected to the subframe and horizontally extends towards the outside of the subframe for supporting below the rectangular block, and the inclined rib plate is connected between the subframe and the rectangular rod.

[0015] The beneficial effects of the rear tipping structure for a dump truck provided by the present utility model are as follows: Compared with the prior art, for the rear tipping structure for a dump truck of the present utility model, by adopting a detachable connection between the tipping support and the cargo box floor, on the one hand, during installation, after connecting the tipping support to the tipping shaft first, the cargo box can be hoisted above the subframe, and then the tipping support is assembled and connected to the cargo box floor, realizing a split upper loading process, reducing potential safety hazards and improving the assembly efficiency of the whole vehicle. On the other hand, the detachable connection between the tipping support and the cargo box floor provides convenience for the later maintenance of the tipping shaft and the replacement of the cargo box, reducing the maintenance cost. At the same time, the two groups of auxiliary support assemblies can provide a rigid support for the cargo box, avoiding the situation where the force on the tipping shaft increases due to the left and right swinging of the cargo box when the dump truck is driving on a soft foundation road surface, which helps to extend the service life of the rear tipping structure.

[0016] Secondly, the embodiment of the present utility model also provides a dump truck.

[0017] The beneficial effects of the dump truck provided by this embodiment are the same as those of the aforementioned rear tipping structure for a dump truck, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of the installation state of a rear tipping structure for a dump truck provided by an embodiment of the present utility model;

[0020] Figure 2 For an embodiment of the present utility model Figure 1 The A-A sectional (partial) structural schematic diagram;

[0021] Figure 3 It is a schematic structural diagram of the installation state of the tipping support provided by an embodiment of the present utility model;

[0022] Figure 4 It is a schematic structural diagram of the tipping support provided by an embodiment of the present utility model;

[0023] Figure 5 It is a sectional (partial) structural schematic diagram of the tipping shaft provided by an embodiment of the present utility model;

[0024] Figure 6 It is a sectional structural schematic diagram of the tipping support and the lubricating sleeve provided by an embodiment of the present utility model;

[0025] Figure 7 This is a schematic structural diagram of the reinforcement seat provided by the embodiment of the present utility model.

[0026] Among them, the reference numerals in the figure are as follows:

[0027] 1. Flip seat assembly; 11. Flip shaft; 111. Mounting sleeve; 112. Flip short shaft; 1121. Communication groove; 1122. Oil injection passage; 1123. Oil cup; 12. Flip support; 121. Lower connecting plate; 1211. First mounting hole; 122. Support vertical plate; 123. Bushing; 124. Plug plate; 1241. Avoidance hole; 125. Reinforcement rib plate; 126. Lubricating sleeve; 1261. Oil groove; 13. Connecting piece; 14. Reinforcement seat; 141. Reinforcement frame; 142. Upper connecting plate; 1421. Second mounting hole; 143. Limiting block; 144. Heightening block; 2. Auxiliary support assembly; 21. Upper support member; 211. Rectangular block; 22. Lower support seat; 221. Rectangular rod; 222. Inclined rib plate; 10. Subframe; 20. Cargo compartment floor; 30. Flexible connection structure. Specific embodiments

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0029] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or several of such features. In the description of the present invention, the meaning of "a plurality" and "several" is two or more unless otherwise specifically defined.

[0030] Please refer to Figures 1 to 7, a rear tipping structure for a dump truck provided by the present utility model will be described. The rear tipping structure for a dump truck includes a tipping seat assembly 1 connected between a subframe 10 and a cargo box floor 20. The tipping seat assembly 1 includes a tipping shaft 11 connected to the subframe 10 and two tipping supports 12 respectively detachably connected below the cargo box floor 20. The two tipping supports 12 are respectively located at both ends of the tipping shaft 11 and are rotationally matched with the tipping shaft 11. Among them, two groups of auxiliary support assemblies 2 are further provided between the subframe 10 and the cargo box floor 20, and the two groups of auxiliary support assemblies 2 are respectively located on the left and right sides of the cargo box floor 20. The auxiliary support assembly 2 includes a lower support seat 22 connected to the side of the subframe 10 and an upper support member 21 connected to the bottom of the cargo box floor 20. The lower support seat 22 is used to support below the upper support member 21 to support the cargo box floor 20.

[0031] Compared with the prior art, the rear tipping structure for a dump truck provided in this embodiment, by adopting a detachable connection method between the tipping support 12 and the cargo box floor 20, on the one hand, during installation, after the tipping support 12 is connected to the tipping shaft 11 first, the cargo box can be hoisted above the subframe 10, and the tipping support 12 is connected and assembled with the cargo box floor 20, realizing a split upper loading process, reducing potential safety hazards, and improving the assembly efficiency of the whole vehicle. On the other hand, the detachable connection method between the tipping support 12 and the cargo box floor 20 provides convenience for the later maintenance of the tipping shaft 11 and the replacement of the cargo box, reducing the maintenance cost. At the same time, the two groups of auxiliary support assemblies 2 can play a rigid supporting role for the cargo box, avoiding the situation that the force on the tipping shaft 11 increases due to the left and right swinging of the cargo box when the dump truck is driving on a soft base road surface, which helps to extend the service life of the rear tipping structure.

[0032] It should be noted that in the existing rear-tipping dump truck, the subframe 10 is fixed on the chassis, the tipping seat assembly 1 is located at the rear end of the subframe 10, the tipping shaft 11 is fixedly welded to the subframe 10, the tipping support 12 is rotatably connected to the tipping shaft 11, and the tipping support 12 is fixedly welded to the cargo box floor 20 to ensure the connection strength. The above structure brings great inconvenience to the installation process. Moreover, in the actual use of the dump truck, both the tipping support 12 and the tipping shaft 11 are vulnerable parts. When the tipping support 12 and the tipping shaft 11 are repaired or the cargo box is replaced later, the weld between the tipping support 12 and the cargo box floor 20 needs to be cut and polished, and then welded again after the repair is completed. This process increases the consumption of labor and material costs.

[0033] In this embodiment, the tipping shaft 11 is still fixedly welded to the subframe 10, but the fixed welding between the tipping support 12 and the cargo box floor 20 is changed to a detachable connection, such as by using a bolt connection. In this way, the existing welding process is changed to an assembly process, eliminating the safety hazards of manual operation on the chassis and improving the production efficiency of the whole vehicle. On this basis, considering that when the dump truck is driving on a soft foundation road surface, the cargo box is prone to swing left and right due to the different driving heights of the two wheels on both sides. At this time, an additional tipping moment will be added to the tipping shaft 11, thus affecting the service life of the tipping shaft 11. In this embodiment, by arranging an auxiliary support assembly 2 between the subframe 10 and the cargo box floor 20, the cargo box can be rigidly supported when the cargo box swings left and right, avoiding an increase in the stress on the tipping shaft 11, and thus extending the service life of the tipping shaft 11.

[0034] As a specific embodiment of the rear tipping structure for a dump truck provided by the present utility model, refer to Figure 5 , the tipping shaft 11 includes a mounting sleeve 111 connected to the subframe 10 and two tipping stub shafts 112 respectively connected to both ends of the mounting sleeve 111 in one-to-one correspondence, and the tipping support 12 is rotatably connected to the tipping stub shaft 112.

[0035] In this embodiment, the mounting sleeve 111 is fixedly welded to the rear end of the subframe 10, and the two tipping stub shafts 112 are respectively welded to both ends of the mounting sleeve 111, so that the mounting sleeve 111 and the tipping stub shafts 112 can form an integral tipping shaft 11 structure. Through the above structural arrangement, it helps to reduce the overall weight of the tipping seat assembly 1, and the processing technology is relatively simple.

[0036] Specifically, a stepped hole can be machined at the port position of the mounting sleeve 111. Further, an intermediate sleeve can be added in the stepped hole, and then the tipping stub shaft 112 is sleeved into the intermediate sleeve, which helps to ensure the coaxiality between the tipping stub shaft 112 and the mounting sleeve 111 and can ensure the connection strength.

[0037] As a specific embodiment of the rear tipping structure for a dump truck provided by the present utility model, refer to Figure 4 and Figure 6 , the tipping support 12 includes a lower connecting plate 121, two support vertical plates 122 respectively connected to the lower connecting plate 121, and a shaft sleeve 123 horizontally penetrating through the two support vertical plates 122. A lubricating sleeve 126 sleeved on the outer periphery of the tipping stub shaft 112 is arranged in the shaft sleeve 123, and the lower connecting plate 121 is connected to the cargo box floor 20 through a plurality of connecting pieces 13.

[0038] In this embodiment, first, the lower connecting plate 121, the two supporting vertical plates 122, and the bushing 123 are welded into an integral structure. Then, the lubricating sleeve 126 is pressed into the bushing 123. An interference fit is provided between the lubricating sleeve 126 and the bushing 123, that is, no relative rotation occurs between the lubricating sleeve 126 and the bushing 123. When installing the tipping seat assembly 1, the assembly of the above-mentioned tipping support 12 and the lubricating sleeve 126 is first connected to the tipping short shaft 112, that is, the lubricating sleeve 126 is sleeved on the outer periphery of the tipping short shaft 112. Here, a clearance fit is provided between the lubricating sleeve 126 and the tipping short shaft 112, which means that relative rotation can occur between the lubricating sleeve 126 and the tipping short shaft 112 to achieve the tipping of the cargo box. After that, the connecting member 13 penetrates the lower connecting plate 121 from bottom to top and is then connected to the cargo box floor 20.

[0039] Specifically, the connecting member 13 can adopt high-strength bolts to ensure the connection strength between the tipping support 12 and the cargo box floor 20. More specifically, a plurality of first mounting holes 1211 for the connecting member 13 to penetrate one by one are provided on the lower connecting plate 121.

[0040] Furthermore, a reinforcing rib plate 125 is also connected between the two supporting vertical plates 122. One end of the reinforcing rib plate 125 is connected to the lower connecting plate 121, and the other end is connected to the outer periphery of the bushing 123. There are two reinforcing rib plates 125, and the two reinforcing rib plates 125 are respectively located on the front and rear sides of the bushing 123 to enhance the support strength of the bushing 123.

[0041] As a specific implementation manner of the rear tipping structure for a dump truck provided by the present utility model, refer to Figure 5 and Figure 6 , a circumferentially extending communication groove 1121 is provided on the outer peripheral wall of the tipping short shaft 112. An oil injection channel 1122 communicating with the communication groove 1121 is provided in the tipping short shaft 112. An oil injection port communicating with the oil injection channel 1122 is provided on the outer end surface of the tipping short shaft 112. An oil cup 1123 is connected to the oil injection port. A spiral extending oil groove 1261 communicating with the communication groove 1121 is provided on the inner peripheral wall of the lubricating sleeve 126.

[0042] In this embodiment, after the lubricating sleeve 126 is sleeved on the outer periphery of the tipping short shaft 112, the communication groove 1121 is docked with the oil groove 1261. In this way, lubricating oil is injected into the oil injection port through the oil cup 1123. The lubricating oil enters the communication groove 1121 through the oil injection channel 1122. Then, as the lubricating sleeve 126 rotates, the lubricating oil can enter all parts of the spiral oil groove 1261, thereby lubricating the lubricating sleeve 126 in all directions and improving the service performance of the tipping seat assembly 1.

[0043] Specifically, the oil injection channel 1122 includes an axially extending central channel and a plurality of radially extending radial channels for communicating the central channel and the communication groove 1121.

[0044] As a specific embodiment of the rear flip structure for a dump truck provided by the present utility model, refer to Figure 4 and Figure 6 , the flip support 12 further includes a plug plate 124 blocking the outer end of the lubricating sleeve 126. The plug plate 124 is connected to the lower connecting plate 121, and the plug plate 124 is provided with an avoidance hole 1241 through which the oil cup 1123 passes.

[0045] In this embodiment, the plug plate 124 is welded and fixed to the lower connecting plate 121 to reduce the installation process. When the lubricating sleeve 126 is pressed into the bushing 123, the outer end face of the lubricating sleeve 126 fits against the inner side wall of the plug plate 124. After connecting the flip support 12 and the flip short shaft 112, the outer end face of the flip short shaft 112 can also fit against the inner side wall of the plug plate 124, and at the same time, the oil cup 1123 is located in the avoidance hole 1241. The above setting facilitates the filling of lubricating oil through the oil cup 1123. The setting of the plug plate 124 can block the lubricating oil in the lubricating sleeve 126, prevent the leakage of lubricating oil, and at the same time can block the entry of external dust into the lubricating sleeve 126 to avoid affecting the rotation performance of the lubricating sleeve 126.

[0046] As a specific embodiment of the rear flip structure for a dump truck provided by the present utility model, refer to Figure 3 and Figure 7 , the rear flip structure for a dump truck further includes a reinforcing seat 14. The reinforcing seat 14 includes a reinforcing frame 141 connected to the cargo box floor 20 and an upper connecting plate 142 connected to the bottom of the reinforcing frame 141. The upper connecting plate 142 and the lower connecting plate 121 are arranged up and down corresponding to each other and are connected by a connecting member 13.

[0047] In this embodiment, by setting the reinforcing seat 14, the connection strength between the flip support 12 and the cargo box floor 20 can be increased. There are two reinforcing seats 14, and the two reinforcing seats 14 are respectively welded and fixed on the two sides of the cargo box floor 20. After the flip support 12 and the flip short shaft 112 are assembled, the cargo box floor 20 is hoisted above the subframe 10 to make the upper connecting plate 142 and the lower connecting plate 121 correspond up and down, and the connecting member 13 sequentially penetrates through the lower connecting plate 121 and the upper connecting plate 142 from bottom to top to connect the two.

[0048] Specifically, the upper connecting plate 142 is provided with a plurality of second mounting holes 1421 for the connecting member 13 to penetrate. The second mounting holes 1421 and the first mounting holes 1211 can be vertically penetrated to facilitate the installation of the connecting member 13.

[0049] As a specific embodiment of the rear flip structure for a dump truck provided by the present utility model, refer to Figure 3, two limit blocks 143 are connected to the bottom surface of the upper connecting plate 142. The two limit blocks 143 are respectively located at the front and rear ends of the lower connecting plate 121 to limit the front and rear positions of the reinforcement seat 14.

[0050] In this embodiment, the limit blocks 143 can prevent relative sliding between the lower connecting plate 121 and the upper connecting plate 142, thereby avoiding the phenomenon that the connecting member 13 is sheared and broken, and improving the safety performance of the tipping seat assembly 1.

[0051] Specifically, the limit blocks 143 and the upper connecting plate 142 can adopt a detachable connection method of bolt connection, or the limit blocks 143 can be directly welded and fixed on the upper connecting plate 142. It should be noted that the two limit blocks 143 should be respectively attached to the front and rear ends of the lower connecting plate 121 to limit the reinforcement seat 14 in the front and rear directions.

[0052] As a specific embodiment of the rear tipping structure for a dump truck provided by the present utility model, refer to Figure 1 , Figure 3 and Figure 7 , two heightening blocks 144 are connected to the top surface of the upper connecting plate 142. The two heightening blocks 144 are respectively located on the front and rear sides of the reinforcement frame 141, and the heightening blocks 144 protrude from the upper connecting plate 142 toward the side of the cargo box floor 20.

[0053] To reduce the rigid collision between the cargo box floor 20 and the subframe 10 when the dump truck is driving on a soft foundation road surface, a soft connection structure 30 is provided between the cargo box floor 20 and the subframe 10 for some models of dump trucks. In this embodiment, heightening blocks 144 are provided on the upper connecting plate 142, and the heightening blocks 144 protrude from the upper connecting plate 142 toward the side of the cargo box floor 20. In this way, the protruding part of the heightening blocks 144 can be inserted into the gap formed between the subframe 10 and the cargo box floor 20 due to the provision of the soft connection structure 30, thereby contributing to improving the overall stability of the whole vehicle.

[0054] As a specific embodiment of the rear tipping structure for a dump truck provided by the present utility model, refer to Figure 2 , the upper support member 21 is a rectangular block 211, which is arranged near the side edge of the cargo box floor 20. The lower support seat 22 includes a rectangular rod 221 and an inclined rib plate 222. The rectangular rod 221 is connected to the subframe 10 and extends horizontally outward from the subframe 10 to support the lower part of the rectangular block 211, and the inclined rib plate 222 is connected between the subframe 10 and the rectangular rod 221.

[0055] In this embodiment, when the cargo box swings to the right, the rectangular block 211 on the right side of the cargo box bottom plate 20 presses down the rectangular rod 221, and the rectangular rod 221 provides rigid support for the rectangular block 211 to prevent the cargo box from swinging, thereby avoiding the additional tipping moment exerted by the cargo box bottom plate 20 on the tipping shaft 11. Similarly, when the cargo box swings to the left, the rectangular rod 221 on the left provides rigid support for the rectangular block 211 on the left side of the cargo box bottom plate 20 to ensure the stability of the cargo box, avoid increasing the force on the tipping shaft 11, and thus extend the service life of the tipping shaft 11.

[0056] Specifically, the rectangular block 211 is arranged near the side edge of the cargo box bottom plate 20 to ensure the balance of the cargo box. The rectangular rod 221 is welded and fixed to one side of the subframe 10, and the bearing strength of the rectangular rod 221 is increased by welding a diagonal rib plate 222 between the subframe 10 and the rectangular rod 221.

[0057] Based on the same inventive concept, an embodiment of the present application further provides a dump truck, including a rear tipping structure for a dump truck proposed in any one of the foregoing.

[0058] The beneficial effects of the dump truck provided in this embodiment are the same as those of the rear tipping structure for a dump truck described above, and will not be elaborated here.

[0059] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

[0060] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A rear tipping structure for a dump truck, characterized in that: The vehicle comprises a flip seat assembly connected between the sub-frame and the cargo compartment floor, wherein the flip seat assembly comprises a flip shaft connected to the sub-frame and two flip supports respectively detachably connected to the bottom of the cargo compartment floor, wherein the two flip supports are respectively located at two ends of the flip shaft and are rotationally matched with the flip shaft; Among them, two groups of auxiliary support assemblies are also provided between the subframe and the cargo compartment floor, and the two groups of auxiliary support assemblies are respectively located on the left and right sides of the cargo compartment floor. The auxiliary support assembly includes a lower support seat connected to the side of the subframe and an upper support member connected to the bottom of the cargo compartment floor. The lower support seat is used to support the bottom of the upper support member to support the cargo compartment floor.

2. A rear tipping structure for a dump truck as claimed in claim 1, characterized in that: The flip shaft comprises a mounting sleeve connected to the auxiliary frame and two flip short shafts connected to two ends of the mounting sleeve in a one-to-one correspondence, and the flip support is rotatably connected to the flip short shafts.

3. A rear tipping structure for a dump truck as claimed in claim 2, characterized in that: The flip support includes a lower connecting plate, two supporting vertical plates respectively connected to the lower connecting plate, and a shaft sleeve horizontally passing through the two supporting vertical plates, wherein a lubricating sleeve is provided inside the shaft sleeve and is sleeved on the outer periphery of the flip short shaft, and the lower connecting plate is connected to the cargo compartment floor through a plurality of connecting parts.

4. A rear tipping structure for a dump truck as claimed in claim 3, characterized in that: A circumferentially extending connecting groove is provided on the outer circumferential wall of the flip short shaft, an oil injection channel connected to the connecting groove is provided in the flip short shaft, an oil injection port connected to the oil injection channel is provided on the outer end surface of the flip short shaft, the oil injection port is connected to an oil cup, and an oil groove extending spirally and connected to the connecting groove is provided on the inner circumferential wall of the lubricating sleeve.

5. The rear tipping structure for a dump truck as claimed in claim 4, characterized in that: The flip support also includes a blocking plate sealed at the outer end of the lubricating sleeve, the blocking plate is connected to the lower connecting plate, and the blocking plate is provided with an avoidance hole for the oil cup to pass through.

6. The rear tipping structure for a dump truck as claimed in claim 3, characterized in that: The rear flip structure for dump trucks also includes a reinforcement seat, which includes a reinforcement frame connected to the cargo compartment floor and an upper connecting plate connected to the bottom of the reinforcement frame. The upper connecting plate and the lower connecting plate are arranged correspondingly up and down and connected through the connecting piece.

7. A rear tipping structure for a dump truck as claimed in claim 6, characterized in that: The bottom surface of the upper connecting plate is connected to two limit blocks, and the two limit blocks are located at the front and rear ends of the lower connecting plate in a one-to-one correspondence and are used to limit the front and rear positions of the reinforcing seat.

8. The rear tipping structure for a dump truck as claimed in claim 6, characterized in that: The top surface of the upper connecting plate is connected to two heightening blocks, which are located at the front and rear sides of the reinforcing frame in a one-to-one correspondence, and the heightening blocks protrude from the upper connecting plate toward one side of the cargo compartment bottom plate.

9. The rear tipping structure for a dump truck according to claim 1, characterized in that: The upper support member is a rectangular block, which is arranged near the side edge of the cargo compartment floor. The lower support seat includes a rectangular rod and an oblique rib plate. The rectangular rod is connected to the subframe and extends horizontally to the outside of the subframe and is used to support the bottom of the rectangular block. The oblique rib plate is connected between the subframe and the rectangular rod.

10. A dump truck, characterized in that: It comprises a rear flip structure for a dump truck as described in any one of claims 1 to 9.

Images