Middle fender support for double rear axles of heavy tractor

Abstract

The utility model discloses a heavy-duty tractor double-rear-axle middle fender support which comprises a supporting pipe beam and further comprises a first installation base fixedly installed at one end of the supporting pipe beam, and reinforcing ribs are welded to the periphery of the connecting position of the first installation base and the supporting pipe beam. A first mounting seat is fixedly mounted on the outer side of the supporting tubular beam, a second mounting seat is fixedly mounted on the side, close to the first mounting seat, of the outer side of the supporting tubular beam, mounting holes are symmetrically formed in one side of the first mounting seat and the top of the second mounting seat in a penetrating mode, and connecting frames are symmetrically mounted on the side, away from the first mounting seat, of the outer side of the supporting tubular beam. Connecting holes are symmetrically formed in the two sides of the two connecting frames in a penetrating mode, a supporting assembly is arranged at the position, located between the two connecting frames, of the outer portion of the supporting pipe beam, and the supporting assembly comprises a supporting frame arranged outside the supporting pipe beam; the reliability of the fender support assembly is improved, the supporting pipe beam can be effectively prevented from being broken from the connecting position of the base, and the production cost and the production difficulty can be effectively controlled.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically a mudguard bracket for the middle rear axle of a heavy-duty tractor. Background Technology

[0002] Currently, the structure of the intermediate mudguard bracket for dual rear axles of heavy-duty tractor trucks generally includes a base, a support beam, and connecting accessories. The base is usually a casting, fixed to the web surface or upper flange of the longitudinal beam of the vehicle frame. The support beam is connected to the base, and the connecting accessories are fixed to the support beam for mounting the mudguard. In this structure, the stress on the mudguard bracket is concentrated at the junction of the base and the support beam. Furthermore, the intermediate mudguard bracket for dual rear axles needs to simultaneously bear the weight of both the middle rear mudguard and the front mudguard of the rear axle. When the vehicle is traveling on rough roads, the impact and vibration from the road surface, combined with the weight and inertia borne by the mudguard bracket itself, can easily cause the support beam to break at the junction with the base, affecting the normal use of the vehicle and driving safety.

[0003] Currently, to improve the strength of mudguard brackets, the common methods are to increase the size of the base and thicken the support tube beam, or add a rubber bushing or fill the space between the support beam and the base with vulcanized rubber to dampen vibration, or replace the base and support tube beam with aluminum alloy, or integrally cast the base and support tube beam, or use a support tube beam with variable diameter and wall thickness. These technical solutions typically lead to increased vehicle weight and cost, and more complex raw materials and manufacturing processes for the mudguard brackets.

[0004] A mudguard bracket for the middle rear axle of a heavy-duty tractor is proposed to address the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a mudguard bracket for the middle rear axle of a heavy-duty tractor, to solve the problems mentioned in the background art. Currently, to improve the strength of mudguard brackets, the common methods are to increase the base and thicken the support beam, or add a rubber bushing or fill the space between the support beam and the base with vulcanized rubber to dampen vibration, or replace the base and support beam with aluminum alloy, or integrally cast the base and support beam, or use a variable diameter, variable wall thickness support beam. These technical solutions typically lead to increased vehicle weight and cost, and increased complexity in the raw materials and manufacturing processes of the mudguard bracket.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a support bracket for the intermediate mudguard of a double rear axle of a heavy-duty tractor, including a supporting tube beam;

[0007] Also includes:

[0008] One end of the support tube beam is fixedly installed with a first mounting seat, and a reinforcing rib is welded around the connection between the first mounting seat and the support tube beam. A second mounting seat is fixedly installed on the outside of the support tube beam near the first mounting seat. Mounting holes are symmetrically opened through the first mounting seat on one side and the top of the second mounting seat.

[0009] Among them, the supporting tube beam is symmetrically equipped with connecting frames on the side away from the first mounting seat, and the two connecting frames are symmetrically provided with connecting holes on both sides, and a supporting component is provided on the outside of the supporting tube beam between the two connecting frames.

[0010] The support assembly includes a support frame disposed outside the support tube beam, and a rotating frame is hinged to one side of the bottom of the support frame. A positioning arc plate is fixedly installed on one side of the rotating frame, and rubber pads are fixedly installed on the side of the support frame that is close to the positioning arc plate.

[0011] Preferably, the support tube beam is connected to the first mounting base by friction welding.

[0012] Preferably, a movable plate is fixedly installed on one side of the bottom of the positioning arc plate, and a movable plate is slidably connected to the inside of the support frame. Furthermore, movable rods are symmetrically slidably connected to the lower inside of the movable plate, and a positioning plate is fixedly installed at one end of each of the two movable rods.

[0013] Preferably, a telescopic spring is fitted on the outer side of each of the two movable rods, and one end of the telescopic spring is fixedly connected to the movable plate, and the other end of the telescopic spring is fixedly installed with a mounting block, which is fixedly connected to the movable rod.

[0014] Preferably, mounting frames are symmetrically installed on one side of the top of the support frame, and a rotating rod is rotatably connected between the two mounting frames. A winding component is fixedly installed on the outside of the rotating rod, and a wire rope is fixedly installed on the outside of the winding component. The end of the wire rope away from the winding component is fixedly connected to the movable plate.

[0015] Preferably, one end of the rotating rod passes through a side mounting bracket and is fixedly mounted with a ratchet on the outside, and the side mounting bracket is hinged to a ratchet tooth on one side of the ratchet tooth, and a torsion spring is fixedly mounted on one side of the ratchet tooth, and the end of the torsion spring away from the ratchet tooth is fixedly connected to the side mounting bracket.

[0016] Preferably, a sliding rod is slidably connected inside the rotating rod on one side of the ratchet, and limit blocks are fixedly installed at both ends of the sliding rod.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: The supporting tube beam of this heavy-duty tractor's dual rear axle intermediate mudguard bracket is fixed to the vehicle frame via a first mounting seat and a second mounting seat. The second mounting seat effectively reduces the lever arm formed by the first mounting seat, supporting tube beam, and mudguard. Compared with a single fixed point, this significantly improves the reliability of the mudguard bracket assembly, effectively preventing the supporting tube beam from breaking at the base connection point. Furthermore, it effectively controls production costs and manufacturing difficulty. The specific details are as follows:

[0018] 1. The support tube beam and the first mounting seat are fixed by friction welding, which can achieve a seamless welding effect, improve the strength of the welded joint and the comprehensive mechanical properties of the welded area. The first mounting seat and the second mounting seat are fixed to the frame through the cooperation of mounting holes and bolts. The mudguard can be installed on both sides of the two connecting frames. The mudguard is supported by the support tube beam. The support tube beam is fixed to the frame through the first mounting seat and the second mounting seat. The second mounting seat is equivalent to reducing the lever power arm formed by the first mounting seat-support tube beam-mudguard. Compared with a single fixed point, it significantly improves the reliability of the mudguard bracket assembly, effectively avoids the support tube beam from breaking at the base connection, and can effectively control production costs and production difficulty.

[0019] 2. After fixing the mudguard with two connecting brackets, the support brackets can be placed outside the support pipe beam according to the weight or size of the mudguard. Different numbers of support brackets can be selected based on the size and weight of the mudguard. Then, the positioning arc plate can be rotated. After the positioning arc plate rotates, a ramp is set on the top side of the moving plate and the bottom of the positioning plate. As the positioning arc plate rotates, the moving plate can push the positioning plate to move, causing the movable rod to slide on the movable plate and stretch the telescopic spring. Then, the positioning arc plate rotates and fits against the support pipe beam, allowing the movable plate to pass through the positioning plate. Under the action of the telescopic spring, the positioning plate resets and limits the positioning arc plate. The position of the support brackets can then be adjusted. Through holes are provided at both ends of the support brackets for fixing to the mudguard with bolts. After the support frame is fixed, the sliding rod can be rotated. The rotation of the sliding rod drives the rotating rod to rotate, and the sliding rod can slide on the rotating rod. As the rotating rod rotates, the sliding rod moves, allowing for easier rotation of the rotating rod. This causes the winding component to rotate, driving the wire rope to wind up, which in turn causes the movable plate to move upward. Through the cooperation of the positioning plate and the movable plate, the positioning arc plate can be tightly fitted with the support tube beam. The rotation of the rotating rod drives the ratchet to rotate. After the rotating rod stops rotating, the ratchet can be positioned by the ratchet teeth, thus positioning the positioning arc plate. The support frame can further support and position the mudguard, improving the reliability of the mudguard installation. The number of support frames can be selected according to the size and weight of the mudguard, facilitating disassembly and assembly and improving practicality. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the support component structure of this utility model;

[0022] Figure 3 This utility model Figure 2 Enlarged structural diagram of region A in the middle;

[0023] Figure 4 This utility model Figure 2 Enlarged structural diagram of region B in the middle;

[0024] Figure 5 This is a partial structural diagram of the support component of this utility model.

[0025] In the diagram: 1. Supporting pipe beam; 101. First mounting seat; 102. Second mounting seat; 103. Mounting hole; 104. Connecting frame; 105. Connecting hole; 2. Support assembly; 201. Support frame; 202. Rubber pad; 203. Rotating frame; 204. Positioning arc plate; 205. Moving plate; 206. Movable plate; 207. Movable rod; 208. Positioning plate; 209. Telescopic spring; 210. Mounting block; 211. Mounting frame; 212. Rotating rod; 213. Rewinding component; 214. Wire rope; 215. Ratchet; 216. Ratchet tooth; 217. Torsion spring; 218. Sliding rod; 219. Limiting block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5This utility model provides a technical solution: a heavy-duty tractor double rear axle intermediate mudguard bracket, including a support tube beam 1, and further including: a first mounting seat 101 fixedly installed at one end of the support tube beam 1, and reinforcing ribs welded around the connection between the first mounting seat 101 and the support tube beam 1; a second mounting seat 102 fixedly installed on the outer side of the support tube beam 1 near the first mounting seat 101; and mounting holes 103 symmetrically opened through the first mounting seat 101 on one side and the top of the second mounting seat 102; wherein, connecting brackets 104 are symmetrically installed on the outer side of the support tube beam 1 away from the first mounting seat 101, and the two connecting brackets... Both sides of the support tube beam 104 are symmetrically provided with connecting holes 105, and a support assembly 2 is provided on the outside of the support tube beam 1 between the two connecting frames 104. The support assembly 2 includes a support frame 201 provided on the outside of the support tube beam 1, and a rotating frame 203 is hinged to one side of the bottom of the support frame 201. A positioning arc plate 204 is fixedly installed on one side of the rotating frame 203. Rubber pads 202 are fixedly installed on the side of the support frame 201 that is close to the positioning arc plate 204. This improves the reliability of the mudguard bracket assembly, can effectively prevent the support tube beam 1 from breaking at the base connection, and can effectively control production costs and production difficulty.

[0028] The support tube beam 1 and the first mounting base 101 are connected by friction welding to improve the connection strength between the support tube beam 1 and the first mounting base 101. A movable plate 205 is fixedly installed on one side of the bottom of the positioning arc plate 204, and a movable plate 206 is slidably connected to the inside of the support frame 201. Movable rods 207 are symmetrically slidably connected to the lower inside of the movable plate 206. A positioning plate 208 is fixedly installed at one end of each of the two movable rods 207, so that the positioning plate 208 can limit the movable plate 205. A telescopic spring 209 is sleeved on the outer side of each of the two movable rods 207. One end of the telescopic spring 209 is fixedly connected to the movable plate 206, and the other end of the telescopic spring 209 is fixedly installed with a mounting block 210. The mounting block 210 is fixedly connected to the movable rod 207, so that the positioning plate 208 can automatically reset after moving. Mounting brackets 211 are symmetrically installed on one side of the top of the support frame 201, and two mounting brackets 211... A rotating rod 212 is rotatably connected between the rotating rod 212 and a winding member 213 is fixedly installed on the outside of the rotating rod 212. A wire rope 214 is fixedly installed on one side of the winding member 213, and the end of the wire rope 214 away from the winding member 213 is fixedly connected to the movable plate 206, so that the rotation of the rotating rod 212 can pull the movable plate 206 to move. One end of the rotating rod 212 passes through a side mounting bracket 211 and a ratchet 215 is fixedly installed on the outside. A ratchet 216 is hinged to one side of the side mounting bracket 211 on the ratchet 215. A torsion spring 217 is fixedly installed on one side of the ratchet 216, and the end of the torsion spring 217 away from the ratchet 216 is fixedly connected to the side mounting bracket 211, which can position the rotation of the rotating rod 212. A sliding rod 218 is slidably connected inside the rotating rod 212 on one side of the ratchet 215, and limit blocks 219 are fixedly installed at both ends of the sliding rod 218 to facilitate the rotation of the rotating rod 212 by the operator.

[0029] Working principle: Before using this type of heavy-duty tractor dual rear axle intermediate mudguard bracket, it is necessary to check the overall condition of the device to ensure it can function normally. Figure 1 - Figure 5As shown, the support tube beam 1 and the first mounting seat 101 are fixed by friction welding, which can achieve a seamless welding effect, improve the strength of the welded joint and the comprehensive mechanical properties of the welded area. The first mounting seat 101 and the second mounting seat 102 are fixed to the frame through the mounting hole 103 and the bolt. The mudguard can be installed on both sides of the two connecting frames 104 and supported by the support tube beam 1. The support tube beam 1 is fixed to the frame through the first mounting seat 101 and the second mounting seat 102. The second mounting seat 102 is equivalent to reducing the lever power arm formed by the first mounting seat 101-support tube beam 1-mudguard. Compared with a single fixed point, it significantly improves the reliability of the mudguard bracket assembly, effectively avoids the support tube beam 1 from breaking at the base connection, and effectively controls production costs and production difficulty.

[0030] After the mudguard is fixed by two connecting brackets 104, the support bracket 201 can be placed outside the support tube beam 1 according to the weight or size of the mudguard. Different numbers of support brackets 201 can be selected according to the size and weight of the mudguard. Then, the positioning arc plate 204 can be rotated. After the positioning arc plate 204 rotates, the top side of the moving plate 205 and the bottom of the positioning plate 208 are set with slopes. As the positioning arc plate 204 rotates, the moving plate 205 can push the positioning plate 208 to move, so that the movable rod 207 slides on the movable plate 206 and stretches the telescopic spring 209. Then, the positioning arc plate 204 rotates and fits against the support tube beam 1, so that the movable plate 205 passes through the positioning plate 208. Under the action of the telescopic spring 209, the positioning plate 208 is reset and limits the positioning arc plate 204. Then, the position of the support bracket 201 can be adjusted. The two ends of the support bracket 201 are provided with through holes, which can be used to fix it to the mudguard with bolts. After 201 is fixed, the sliding rod 218 can be rotated. The rotation of the sliding rod 218 can drive the rotating rod 212 to rotate, and the sliding rod 218 can slide on the rotating rod 212. As the rotating rod 212 rotates, the sliding rod 218 moves, allowing the rotating rod 212 to be rotated with less effort. This causes the winding component 213 to rotate, driving the wire rope 214 to wind up, which in turn causes the movable plate 206 to move upward. Through the cooperation of the positioning plate 208 and the movable plate 205, the positioning arc plate 204 can be tightly fitted with the support tube beam 1. The rotation of the rotating rod 212 drives the ratchet 215 to rotate. After the rotating rod 212 stops rotating, the ratchet 216 can position the ratchet 215, thus positioning the positioning arc plate 204. The support frame 201 can further support and position the mudguard, improving the reliability of the mudguard installation. The number of support frames 201 can be selected according to the size and weight of the mudguard, making it easy to disassemble and assemble, thus improving practicality.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heavy-duty tractor with a double rear axle intermediate mudguard bracket, comprising a support tube beam (1); Its features are, Also includes: One end of the support tube beam (1) is fixedly installed with a first mounting seat (101), and a reinforcing rib is welded around the connection between the first mounting seat (101) and the support tube beam (1). A second mounting seat (102) is fixedly installed on the outside of the support tube beam (1) near the first mounting seat (101). Mounting holes (103) are symmetrically opened through the first mounting seat (101) and the top of the second mounting seat (102). Among them, the supporting tube beam (1) is symmetrically equipped with connecting frames (104) on the side away from the first mounting seat (101) on the outside, and the two connecting frames (104) are symmetrically provided with connecting holes (105) on both sides, and a supporting component (2) is provided on the outside of the supporting tube beam (1) between the two connecting frames (104). The support assembly (2) includes a support frame (201) disposed outside the support tube beam (1), and a rotating frame (203) is hinged to one side of the bottom of the support frame (201), and a positioning arc plate (204) is fixedly installed on one side of the rotating frame (203), and rubber pads (202) are fixedly installed on the side of the support frame (201) that is close to the positioning arc plate (204).

2. The heavy-duty tractor double rear axle intermediate mudguard bracket according to claim 1, characterized in that: The supporting tube beam (1) is connected to the first mounting base (101) by friction welding.

3. The heavy-duty tractor double rear axle intermediate mudguard bracket according to claim 1, characterized in that: A movable plate (205) is fixedly installed on one side of the bottom of the positioning arc plate (204), and a movable plate (206) is slidably connected to one side of the inside of the support frame (201). Movable rods (207) are symmetrically slidably connected to the lower inside of the movable plate (206), and a positioning plate (208) is fixedly installed at one end of the two movable rods (207).

4. A heavy-duty tractor double rear axle intermediate mudguard bracket according to claim 3, characterized in that: Each of the two movable rods (207) is fitted with a telescopic spring (209) on its outer side. One end of the telescopic spring (209) is fixedly connected to the movable plate (206), and the other end of the telescopic spring (209) is fixedly installed with a mounting block (210). The mounting block (210) is fixedly connected to the movable rod (207).

5. A heavy-duty tractor double rear axle intermediate mudguard bracket according to claim 3, characterized in that: The support frame (201) is symmetrically equipped with mounting frames (211) on one side of the top, and a rotating rod (212) is rotatably connected between the two mounting frames (211). A winding member (213) is fixedly installed on the outside of the rotating rod (212), and a wire rope (214) is fixedly installed on the outside of the winding member (213). The end of the wire rope (214) away from the winding member (213) is fixedly connected to the movable plate (206).

6. A heavy-duty tractor double rear axle intermediate mudguard bracket according to claim 5, characterized in that: One end of the rotating rod (212) passes through a side mounting bracket (211) and is fixedly mounted with a ratchet (215) on the outside. The side mounting bracket (211) is hinged to a ratchet (216) on one side of the ratchet (215). A torsion spring (217) is fixedly mounted on one side of the ratchet (216), and the end of the torsion spring (217) away from the ratchet (216) is fixedly connected to the side mounting bracket (211).

7. A heavy-duty tractor double rear axle intermediate mudguard bracket according to claim 6, characterized in that: The rotating rod (212) is slidably connected to a sliding rod (218) on one side of the ratchet (215), and both ends of the sliding rod (218) are fixedly installed with limit blocks (219).

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