Wheel pin axle fixing structure of self-propelled vehicle

Abstract

The utility model relates to the technical field of self -propelled vehicle, and disclose a kind of wheel pin axle fixing structure of self -propelled vehicle, including self -propelled vehicle frame and the split axle housing of being fixedly installed in the lower inner side of self -propelled vehicle frame, and the power input end of split axle housing is provided with speed reducer.The wheel pin axle fixing structure of self -propelled vehicle, by the cooperation design of anti-rotation key and the main shaft of end portion conical structure, effectively limit relative circumferential rotation between components, improve the stability of walking, and hole bolt one, hole bolt two are about main shaft axis annular distribution, and the steel wire loop of adjacent bolt is formed in two-way anti-loose constraint by cooperation ''∞'' shape, can significantly offset the influence of equipment walking vibration on bolt, avoid cover plate and main shaft, wheel assembly connection place loosening, hub, outer reinforcing rib, inner reinforcing rib and outer connecting ring adopt integrated injection molding process, combined with the reinforcing rib structure of multiple annular distribution, greatly improve the integrity of component structure, connection strength and anti-deformation ability.

Description

Technical Field

[0001] This utility model relates to the field of self-propelled vehicle technology, specifically to a wheel pin fixing structure for a self-propelled vehicle. Background Technology

[0002] The funnel-type self-propelled vehicle is an automated transportation equipment that integrates material loading, transfer, and precise unloading functions. It is widely used in factory production lines, construction sites, mining, and other scenarios. The core of the equipment consists of a funnel-type hopper, a self-propelled chassis, a power system, and a control module. The hopper is made of wear-resistant steel in one piece and has an anti-clogging tilt design. It has a controllable unloading port at the bottom. It is powered by a battery or an internal combustion engine and supports both manual remote control and automatic path planning modes. It can flexibly adapt to complex working environments. During operation, materials are loaded through the inlet at the top of the hopper and transferred to fixed points using the self-propelled system. By adjusting the opening of the unloading port and the walking speed, uniform material distribution or quantitative unloading can be achieved.

[0003] The existing funnel-type self-propelled wheel installation and fixing structure generally adopts a design scheme of round nut and anti-rotation key. In actual use, due to the influence of uneven ground, the wheel stress is unevenly distributed, resulting in the drive wheel end bearing a large load during walking. Long-term operation under this condition can easily cause bolt loosening, which in turn leads to a decrease in equipment operation stability and poor practicality. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a wheel pin fixing structure for a self-propelled vehicle, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by this utility model is as follows: a wheel pin fixing structure for a self-propelled vehicle, including a self-propelled vehicle frame and a transfer case fixedly installed on the lower inner side of the self-propelled vehicle frame. A reducer is provided at the power input end of the transfer case, and a drive motor is provided at the power input end of the reducer. Main shafts are fixedly installed at the power output ends on both sides of the transfer case. An active wheel assembly is provided on the outer side of one main shaft, and a driven wheel assembly is provided on the outer side of the other main shaft. A cover plate is provided at the end of both the active and driven wheel assemblies away from the main shaft. Two bolts with holes arranged in a ring are threaded between the cover plate and the main shaft. One bolt with holes arranged in a ring is threaded between the cover plate and both the active and driven wheel assemblies. A wire ring is provided between two adjacent bolts with holes and two adjacent bolts with holes.

[0006] Preferably, a bushing is provided at the connection between the main shaft and the self-propelled vehicle frame. Two identical bushings are provided, and the two bushings are symmetrically distributed on the lower part of the self-propelled vehicle frame. Anti-rotation keys are provided between the driving wheel assembly and the driven wheel assembly and the main shaft.

[0007] Through the above technical solutions, the anti-rotation key can effectively limit the relative circumferential rotation between the driving wheel assembly, the driven wheel assembly and the main shaft, ensuring the reliability of power transmission, and thus improving the structural stability and service life of the entire walking system.

[0008] Preferably, both the first and second perforated bolts are arranged in a ring about the axis of the main shaft, the wire loop passes through two adjacent first perforated bolts to form an "∞" shape, and the wire loop also passes through the second perforated bolt to form an "∞" shape.

[0009] Through the above technical solution, the steel wire ring is shaped like an "∞" and runs through the structure of adjacent bolts, which can form a two-way anti-loosening constraint, effectively offsetting the bolts caused by vibration during equipment movement, significantly improving the reliability of bolt connections, and preventing loosening at the connection between the cover plate and the main shaft and wheel assembly.

[0010] Preferably, the active wheel assembly includes a hub, a tire is fitted onto the outer side of the hub, an outer connecting ring is fixedly installed on the inner side of the hub, an outer reinforcing rib and an inner reinforcing rib are fixedly installed on both sides of the connection between the outer connecting ring and the hub, an active drum is provided on the inner side of the hub, and a locking bolt is provided between the active drum and the outer connecting ring.

[0011] Preferably, there are multiple identical outer and inner reinforcing ribs, which are arranged in a ring around the axis of the drive drum. The hub, outer reinforcing ribs, inner reinforcing ribs, and outer connecting ring are integrally injection molded. There are multiple identical locking bolts, which are arranged in a ring around the axis of the drive drum.

[0012] Through the above technical solutions, the annular distribution structure of the reinforcing ribs and inner reinforcing ribs can significantly improve the connection strength and deformation resistance between the wheel hub and the outer connecting ring. The one-piece injection molding process can ensure the structural integrity of the wheel hub, reinforcing ribs and outer connecting ring. Multiple annularly distributed locking bolts can make the connection between the drive drum and the outer connecting ring uniformly stressed, enhance the connection firmness, ensure the structural stability during power transmission, and meet the load-bearing and power output requirements of the walking equipment.

[0013] Preferably, the active wheel assembly and the driven wheel assembly have the same structure, the active wheel assembly and the driven wheel assembly are symmetrically distributed about the vertical axis of the self-propelled vehicle frame, and the end of the main shaft adopts a conical structure.

[0014] Through the above technical solutions, the structural universality design of the active wheel assembly and the driven wheel assembly can reduce the design, processing and inventory costs of parts and improve assembly and maintenance efficiency. At the same time, the conical structure at the end of the main shaft, coupled with the anti-rotation key, can achieve greater axial and radial clamping force, which can effectively overcome harsh working conditions such as uneven ground and uneven force.

[0015] Compared with the prior art, this utility model provides a wheel pin fixing structure for a self-propelled vehicle, which has the following advantages: 1. The wheel pin fixing structure of this self-propelled vehicle, through the cooperation design of the anti-rotation key with the main shaft and wheel assembly, effectively restricts the relative circumferential rotation between components, ensures that the power transmission is slip-free, and improves the stability of walking. The bolts with holes one and two are distributed in a ring around the main shaft axis, and together with the "∞" shaped steel wire ring that passes through the adjacent bolts, a two-way anti-loosening constraint is formed, which can significantly offset the impact of equipment walking vibration on the bolts, prevent the cover plate from loosening at the connection between the main shaft and the wheel assembly, greatly improve the stability of the bolt connection, and ensure the overall structural safety during operation. 2. The wheel pin fixing structure of the self-propelled vehicle, the wheel hub, outer reinforcing rib, inner reinforcing rib and outer connecting ring are integrally injection molded, combined with multiple sets of ring-shaped reinforcing rib structures, which greatly improves the overall structure, connection strength and deformation resistance of the components. The active wheel assembly and the driven wheel assembly have the same structure and are symmetrically distributed, which reduces the design, processing and inventory costs of parts and improves assembly and maintenance efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front structure of this utility model; Figure 2 This is a side view of the present invention. Figure 3 This is a schematic cross-sectional view of the present invention. Figure 4 This is a schematic cross-sectional view of the active wheel assembly of this utility model; Figure 5 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0017] The components include: 1. Self-propelled vehicle frame; 2. Transfer case; 3. Reducer; 4. Drive motor; 5. Bushing; 6. Drive wheel assembly; 601. Wheel hub; 602. Tire; 603. Outer reinforcing rib; 604. Inner reinforcing rib; 605. Outer connecting ring; 606. Drive drum; 607. Locking bolt; 7. Cover plate; 8. Bolt with hole one; 9. Bolt with hole two; 10. Main shaft; 11. Anti-rotation key; 12. Steel wire ring; 13. Driven wheel assembly. Detailed Implementation

[0018] 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.

[0019] Example 1: As Figure 1-5 As shown, the present invention provides a wheel pin fixing structure for a self-propelled vehicle, including a self-propelled vehicle frame 1 and a transfer case 2 fixedly installed on the lower inner side of the self-propelled vehicle frame 1. A reducer 3 is provided at the power input end of the transfer case 2, and a drive motor 4 is provided at the power input end of the reducer 3. Main shafts 10 are fixedly installed on the power output ends on both sides of the transfer case 2. An active wheel assembly 6 is provided on the outer side of one main shaft 10, and a driven wheel assembly 13 is provided on the outer side of the other main shaft 10. A cover plate 7 is provided at the end of both the active wheel assembly 6 and the driven wheel assembly 13 away from the main shaft 10. A ring of perforated bolts 9 are threaded between the cover plate 7 and the main shaft 10. A ring of perforated bolts 8 are threaded between the cover plate 7 and both the active wheel assembly 6 and the driven wheel assembly 13. A wire ring 12 is provided between each two adjacent perforated bolts 9 and each adjacent two perforated bolts 8.

[0020] Specifically, a bushing 5 is provided at the connection between the main shaft 10 and the self-propelled vehicle frame 1. Two identical bushings 5 ​​are provided, symmetrically distributed on the lower part of the self-propelled vehicle frame 1. Anti-rotation keys 11 are provided between the driving wheel assembly 6 and the driven wheel assembly 13 and the main shaft 10. The advantage is that the anti-rotation key 11 can effectively limit the relative circumferential rotation between the driving wheel assembly 6, the driven wheel assembly 13 and the main shaft 10, ensuring the reliability of power transmission, thereby improving the structural stability and service life of the entire walking system.

[0021] Example 2: like Figure 2-5 As shown, this is an improvement on the previous embodiment.

[0022] Specifically, both the first bolt with holes (8) and the second bolt with holes (9) are arranged in a ring around the axis of the main shaft 10. The wire coil 12 passes through two adjacent first bolts (8) to form an "∞" shape, and also passes through the second bolt with holes (9) to form an "∞" shape. The advantage is that the "∞" shape of the wire coil 12 passing through adjacent bolts creates a bidirectional anti-loosening constraint, effectively counteracting bolt vibrations during equipment movement, significantly improving the reliability of the bolt connection, and preventing loosening at the connection between the cover plate 7 and the main shaft 10 and wheel assembly.

[0023] Example 3: like Figure 2-5 As shown, this is an improvement on the previous embodiment.

[0024] Specifically, the active wheel assembly 6 includes a hub 601, a tire 602 fitted onto the outer side of the hub 601, an outer connecting ring 605 fixedly installed on the inner side of the hub 601, outer reinforcing ribs 603 and inner reinforcing ribs 604 fixedly installed on both sides of the connection between the outer connecting ring 605 and the hub 601, an active drum 606 is provided on the inner side of the hub 601, and locking bolts 607 are provided between the active drum 606 and the outer connecting ring 605. Multiple identical outer reinforcing ribs 603 and inner reinforcing ribs 604 are provided, and the outer reinforcing ribs 603 and inner reinforcing ribs 604 are arranged in a ring around the axis of the active drum 606. The hub 601, outer reinforcing ribs 603, inner reinforcing ribs 604 and outer connecting ring 605 are integrally injection molded. Multiple identical locking bolts 607 are provided, and the multiple locking bolts 607 are arranged in a ring around the axis of the active drum 606. The advantages are that the annular distribution structure of the reinforcing ribs and inner reinforcing ribs 604 can significantly improve the connection strength and deformation resistance of the hub 601 and the outer connecting ring 605. The one-piece injection molding process can ensure the structural integrity of the hub 601, the reinforcing ribs and the outer connecting ring 605. The multiple annularly distributed locking bolts 607 can make the connection between the drive drum 606 and the outer connecting ring 605 evenly stressed, enhance the connection firmness, ensure the structural stability during power transmission, and meet the load-bearing and power output requirements of the walking equipment.

[0025] Example 4: like Figure 2-5 As shown, this is an improvement on the previous embodiment.

[0026] Specifically, the active wheel assembly 6 and the driven wheel assembly 13 have the same structure, and are symmetrically distributed about the vertical axis of the self-propelled vehicle frame 1. The end of the main shaft 10 adopts a conical structure. The advantages are that the common design of the active wheel assembly 6 and the driven wheel assembly 13 reduces the design, processing, and inventory costs of parts, and improves assembly and maintenance efficiency. At the same time, the conical structure at the end of the main shaft 10, combined with the anti-rotation key 11, enables greater axial and radial clamping force, effectively overcoming harsh working conditions such as uneven ground and uneven stress.

[0027] Working principle: During use, the drive motor 4 starts and outputs power. After the speed is adjusted and the torque is amplified by the reducer 3, the power is transmitted to the transfer case 2. The transfer case 2 distributes the power to the main shafts 10 on both sides. The main shafts 10 drive the active wheel assembly 6 and the driven wheel assembly 13 to rotate synchronously, thereby realizing the walking function of the self-propelled device. The anti-rotation key 11 between the active wheel assembly 6, the driven wheel assembly 13 and the main shaft 10 restricts the relative circumferential rotation between the components, ensuring that the power transmission is slip-free. The cover plate 7 is fixedly connected to the wheel assembly and the main shaft 10 by bolts with holes 8 and 9, respectively. The ∞-shaped steel wire ring 12 passing through adjacent bolts forms a two-way anti-loosening constraint, offsetting the impact of equipment travel vibration on the bolts, preventing loosening of the connection parts, and ensuring the connection stability of the overall structure. The one-piece injection molded hub 601, outer reinforcing rib 603, inner reinforcing rib 604 and outer connecting ring 605 form a high-strength overall structure. The ring-shaped reinforcing ribs improve the deformation resistance and load-bearing capacity of the hub 601. Multiple ring-shaped locking bolts 607 make the drive drum 606 and outer connecting ring 605 evenly stressed, ensuring the stability of the wheel assembly structure during power transmission and meeting the load requirements when the equipment is traveling.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wheel pin fixing structure for a self-propelled vehicle, comprising a self-propelled vehicle frame (1) and a transfer case (2) fixedly installed on the lower inner side of the self-propelled vehicle frame (1), characterized in that: The transfer case (2) is equipped with a reducer (3) at its power input end, and a drive motor (4) is equipped at the power input end of the reducer (3). The power output ends on both sides of the transfer case (2) are fixedly installed with a main shaft (10). An active wheel assembly (6) is provided on the outside of one main shaft (10), and a driven wheel assembly (13) is provided on the outside of the other main shaft (10). A cover plate (7) is provided at the end of the active wheel assembly (6) and the driven wheel assembly (13) away from the main shaft (10). A ring of perforated bolts (9) is threaded between the cover plate (7) and the main shaft (10). A ring of perforated bolts (8) is threaded between the cover plate (7) and the active wheel assembly (6) and the driven wheel assembly (13). A wire ring (12) is provided between two adjacent perforated bolts (9) and two adjacent perforated bolts (8).

2. The wheel pin fixing structure for a self-propelled vehicle according to claim 1, characterized in that: A bushing (5) is provided at the connection between the main shaft (10) and the self-propelled vehicle frame (1). Two identical bushings (5) are provided, and the two bushings (5) are symmetrically distributed on the lower part of the self-propelled vehicle frame (1). Anti-rotation keys (11) are provided between the active wheel assembly (6) and the driven wheel assembly (13) and the main shaft (10).

3. The wheel pin fixing structure for a self-propelled vehicle according to claim 1, characterized in that: Both the first (8) and the second (9) of the perforated bolts are arranged in a ring about the axis of the main shaft (10). The wire loop (12) passes through two adjacent first (8) of the perforated bolts and forms an "∞" shape. The wire loop (12) also passes through the second (9) of the perforated bolts and forms an "∞" shape.

4. The wheel pin fixing structure for a self-propelled vehicle according to claim 1, characterized in that: The active wheel assembly (6) includes a hub (601), a tire (602) is fitted on the outer side of the hub (601), an outer connecting ring (605) is fixedly installed on the inner side of the hub (601), an outer reinforcing rib (603) and an inner reinforcing rib (604) are fixedly installed on both sides of the connection between the outer connecting ring (605) and the hub (601), an active drum (606) is provided on the inner side of the hub (601), and a locking bolt (607) is provided between the active drum (606) and the outer connecting ring (605).

5. The wheel pin fixing structure for a self-propelled vehicle according to claim 4, characterized in that: The outer reinforcing rib (603) and inner reinforcing rib (604) are provided in multiple identical quantities. The outer reinforcing rib (603) and inner reinforcing rib (604) are arranged in a ring around the axis of the active drum (606). The hub (601), outer reinforcing rib (603), inner reinforcing rib (604) and outer connecting ring (605) are integrally injection molded. The locking bolts (607) are provided in multiple identical quantities. The multiple locking bolts (607) are arranged in a ring around the axis of the active drum (606).

6. The wheel pin fixing structure for a self-propelled vehicle according to claim 1, characterized in that: The active wheel assembly (6) and the driven wheel assembly (13) have the same structure. The active wheel assembly (6) and the driven wheel assembly (13) are symmetrically distributed about the vertical axis of the self-propelled vehicle frame (1). The end of the main shaft (10) adopts a conical structure.

Images