Tool convenient for assembling steel wheel of R300 road roller

Abstract

The utility model belongs to the technical field of road rollers, and particularly relates to a tool convenient for assembling steel wheels of an R300 road roller. Comprising a rotating frame body, a steel wheel fixing system and a turbine worm transmission system. The lower end of the steel wheel is supported by a steel wheel lower end fixing groove plate welded to the lower edge of the rotating frame body, the upper end of the steel wheel is clamped by a steel wheel fixing clamping groove plate, the clamping groove plate and a movable thread rotating shaft moving sleeve are welded into a whole, and the clamping groove plate is driven by a screw of a rotating fixing assembly to linearly move along a limiting groove, so that the steel wheel is rapidly fastened. The turbine is welded to the rotating frame driving shaft, and the worm is driven by the handle and meshed with the turbine to drive the rotating frame body to turn over the steel wheel. The adjusting shaft sleeve can adjust the meshing precision of the turbine and the worm, and the transmission reliability is improved. Manual power is replaced by mechanical transmission, the problems that traditional assembly is low in efficiency and high in dangerousness are solved, integrated operation of clamping, overturning and internal assembly of the steel wheel is achieved, and safety and production efficiency are remarkably improved.

Description

Technical Field

[0001] This utility model belongs to the field of road roller technology, specifically relating to a tooling for facilitating the assembly of steel wheels for R300 road rollers. Background Technology

[0002] A road roller is a type of compaction machinery used for compacting backfill soil, asphalt, and other ground surfaces through impact and vibration. The applied force mainly comes from the road roller's own weight and the rotational vibration frequency of the eccentric shaft inside the steel wheel. Gasoline-powered road rollers overcome the problems of AC electric impact rammers having to find a power cable and being unable to work without power.

[0003] Currently, the assembly of road roller steel wheels by domestic manufacturers is basically done manually. The assembly process also involves turning the steel wheels over. Since the steel wheels are heavy, manual operation is very laborious and inefficient.

[0004] Chinese Patent CN221345195U discloses an easily assembled road roller steel wheel, relating to the field of road roller steel wheel maintenance technology. It addresses the problem that existing designs typically have steel wheels installed inside the front wheel frame, which is mounted at the front of the road roller. This leads to frequent problems with the steel wheels during operation, requiring removal from the front wheel frame for repair and replacement. However, the installation process between the steel wheel and the front wheel frame is usually complex, making removal cumbersome. The proposed design includes a steel wheel body and a front wheel frame, positioned on the upper exterior of the steel wheel body and mounted at the front of the road roller. The steel wheel body has symmetrically arranged fixing discs at both ends, welded to these internal ends. A connecting disc is located on the outer side of each fixing disc, movably fitting against the outer side of the fixing disc. The connecting disc is fixed to the fixing disc using bolts. The assembly process of this device is complex, hindering easy wheel rotation and resulting in low efficiency. Summary of the Invention

[0005] The present invention aims to solve the problems of complex assembly processes, inconvenient steel wheel rotation, and low efficiency in existing technologies.

[0006] The technical solutions adopted in this utility model are as follows:

[0007] A tooling for facilitating the assembly of steel wheels on an R300 road roller, comprising:

[0008] The rotating frame body has a steel wheel lower end fixing groove plate welded to its lower edge to support the lower edge of the steel wheel;

[0009] The steel wheel fixing slot plate is welded to the flexible threaded shaft moving sleeve as a whole. The flexible threaded shaft moving sleeve is sleeved on the fixing component and connected by threads.

[0010] The fixing assembly includes a handle, a screw, and a steel wheel fixing slot plate. The handle is installed on the top of the screw, the screw passes through a bearing seat, and the bearing seat is installed on the rotating frame body by fixing bolts. There are two fixing assemblies in total.

[0011] The steel wheel fixing slot plate is set in the slot plate limiting groove and moves linearly along the slot plate limiting groove;

[0012] The turbine is welded to the rotating frame drive shaft. One end of the rotating frame drive shaft is fixed to the rotating frame body by a disc and bolts, and the other end of the rotating frame drive shaft is fixed to the turbine mounting base by a bearing seat.

[0013] An adjusting bushing is provided between the turbine mounting base and the rotating frame drive shaft;

[0014] The worm is mounted on a turbine mounting base via two bearings. The head of the worm is bolted to a turbine rotation drive handle, and the worm meshes with the turbine.

[0015] By adopting the above technical solution, the linear movement of the steel wheel fixing slot plate is achieved through the threaded connection between the fixed component and the flexible threaded rotating shaft sleeve, combined with the guiding constraint of the slot plate limit groove. This ensures that the upper and lower ends of the steel wheel are fixed synchronously, preventing tilting or slippage. The worm gear and drive shaft transmit torque through a keyway, resulting in high transmission efficiency and no energy loss. A single person can complete the steel wheel flipping. The guide surface of the slot plate limit groove is perpendicular to the steel wheel support surface, ensuring that the steel wheel fixing slot plate moves along a preset path, preventing the steel wheel from shifting or falling off during the flipping process, reducing operational risks. The meshing of the worm gear and worm gear has a self-locking function, eliminating the need for additional locking after the steel wheel is flipped into position, preventing accidental reversal. The rotating mechanism ensures safer and more reliable operation. The worm gear is fixed to the turbine mounting base via a bearing mounting plate, reducing transmission friction. The threaded design of the adjusting bushing allows for flexible adjustment of the relative position between the turbine and the drive shaft, ensuring a smooth transmission system and extending service life. The threaded adjustment function of the adjusting bushing allows for fine-tuning of the turbine mounting position according to the steel wheel specifications or wear condition, adapting to the assembly requirements of steel wheels for different models of road rollers. The combination design of the fixing groove plate and the fixing slot plate at the lower end of the steel wheel allows for adaptation to steel wheels of different diameters by replacing or adjusting the slot size. All key components (such as the turbine, worm gear, and bearing housing) are connected by modular bolts, allowing for quick disassembly and maintenance without the need for special tools.

[0016] Furthermore, the threaded connection direction between the fixing component and the flexible threaded rotating shaft sleeve is consistent with the fixing direction of the steel wheel.

[0017] By adopting the above technical solution, the rotation direction of the threaded connection is completely consistent with the movement direction required for fixing the steel wheel. This ensures that when the rotating sleeve moves, its movement direction along the axis directly corresponds to the steel wheel fixing requirements. The operator only needs to rotate the sleeve in the fixed direction (such as clockwise or counterclockwise) to drive the steel wheel fixing slot plate to move along the correct path, without the need for additional judgment of the movement direction, reducing the risk of operational errors. The steel wheel fixing slot plate, through the linear movement of the flexible threaded rotating shaft sleeve, synchronously clamps the upper edge of the steel wheel, while the lower fixing slot plate of the steel wheel provides support. The consistent threaded connection direction ensures uniform clamping force at both ends, preventing the steel wheel from tilting or slipping. The consistency of the threaded connection direction with the steel wheel fixing direction can reduce structural vibration or jamming caused by reverse torque, extending the service life of the components.

[0018] Furthermore, the turbine mounting base is provided with two bearing mounting plates, and the worm gear is fixed to the top of the turbine mounting base through the bearing mounting plates.

[0019] By adopting the above technical solution, two bearing mounting plates fix the two ends of the worm gear respectively, forming a double-point support. This effectively disperses the axial load of the worm gear, avoiding bending deformation or vibration caused by single-point support. When the worm gear meshes with the worm wheel, there is a large sliding friction and axial force. The double bearing support can significantly improve the bending stiffness of the worm gear and extend its service life. The double bearing mounting plates ensure precise alignment between the worm gear axis and the worm wheel axis, reducing meshing clearance and reducing tooth surface wear caused by axis misalignment. The bearing mounting plates are fixed on the top of the worm wheel mounting base, placing the worm gear in a high position, which facilitates the natural flow of lubricating oil to the worm wheel and bearings, preventing lubricating oil from accumulating at the bearings and causing overheating. The separate layout of the double bearings increases the heat dissipation area and reduces the risk of lubricating oil leakage caused by local high temperature. The bearing mounting plates can be quickly disassembled, facilitating bearing replacement or adding grease and reducing maintenance costs. Fixing the worm gear to the top of the worm wheel mounting base with two bearing mounting plates reduces the complexity of the traditional integrated structure, realizes modular assembly, and improves production efficiency.

[0020] Furthermore, the tail end of the rotating frame drive shaft is fixed to the rotating frame body by a disc and bolts, and the turbine is mounted on the rotating frame drive shaft.

[0021] By adopting the above technical solution, the keyway, through the tight fit between the key and the shaft, can effectively disperse the shear stress during torque transmission, increase the contact area between the shaft and the turbine, thereby enhancing shear resistance and load-bearing capacity. For the assembly tooling of the steel wheel of a road roller, the drive shaft needs to transmit the large torque required for the steel wheel to rotate. The keyway fit can ensure stable torque transmission and avoid power loss due to slippage or slippage. The keyway, through mechanical locking (such as a flat key or a semi-circular key), fixes the drive shaft and the turbine, preventing relative slippage between them during rotation due to friction or impact, ensuring the continuity and accuracy of power transmission. The tail of the drive shaft is connected via... The disc and bolts are fixed to the main body of the rotating frame, forming a rigid support point to prevent the drive shaft from bending or axially displacing due to torque during rotation. The keyway connection is more stable than the bolt connection under high load conditions, and the disc bolt fixing here further strengthens the end rigidity of the shaft and reduces the transmission of vibration to the turbine. The keyway fit can ensure the precise alignment of the drive shaft and the turbine, avoiding increased meshing clearance or tooth surface wear caused by axis misalignment. For worm gear transmission systems, precise axis alignment is the key to reducing transmission noise and vibration. The keyway, through the tight fit between the key and the shaft, avoids surface wear caused by sliding friction.

[0022] Furthermore, the adjusting bushing is provided with threads, and the bearing housing is bolted onto the adjusting bushing.

[0023] By adopting the above technical solution, the thread design of the adjusting bushing allows for precise adjustment of the position of bearing housing two by rotating the bushing along the drive shaft axial direction. The thread adjustment of the bushing can compensate for manufacturing or assembly errors, ensuring that the meshing clearance between the turbine and the worm gear reaches the optimal state. During the assembly process of the road roller steel wheel assembly tooling, if the machining tolerances of the rotating frame drive shaft and the turbine mounting base accumulate, resulting in excessive or insufficient transmission clearance, it can be quickly corrected by adjusting the thread displacement of the bushing, avoiding rework. Bearing housing two is fixed to the adjusting bushing by bolts, forming a rigid connection point to prevent the bearing housing from shifting when the bushing rotates. This design, by fixing the bearing housing with bolts, further ensures the stability of the turbine mounting base and reduces transmission system vibration. The frictional resistance of the bolt connection thread can prevent the adjusting bushing from loosening unexpectedly in a high-vibration environment, avoiding transmission failure.

[0024] Furthermore, the guide surface of the card slot plate limiting groove is perpendicular to the support surface of the lower end fixing groove plate of the steel wheel, and the length direction of the limiting groove is parallel to the axis of the fixing component.

[0025] By adopting the above technical solution, the guide surface of the limiting groove of the slot plate is perpendicular to the support surface of the steel wheel, ensuring that the steel wheel fixing slot plate moves in a strictly vertical direction, avoiding tilting or jamming of the steel wheel due to lateral offset. The length direction of the limiting groove is parallel to the axis of the fixing component, making the moving direction of the steel wheel fixing slot plate completely consistent with the rotational drive direction of the threaded shaft, avoiding deviation of the movement trajectory, and ensuring that the upper and lower ends of the steel wheel are clamped synchronously. The structure of the limiting groove being parallel to the axis of the shaft ensures that the moving path of the steel wheel fixing slot plate is completely matched with the drive direction, reducing lateral friction and lowering... The flexible threaded shaft and bearings have a reduced wear rate, extending their service life. The vertical guide surface restricts the freedom of the slot plate, reducing component vibration caused by shock or impact and preventing premature failure due to repeated friction. Operators can drive the steel wheel to move linearly along the limiting groove by simply rotating the flexible threaded shaft's moving sleeve, without the need for manual adjustment of direction or position, saving operation time. The limiting groove, which is parallel to the vertical guide surface and the axis, works together to prevent the steel wheel from slipping or overturning due to lateral force during clamping or loosening, improving operational safety.

[0026] This utility model has the following beneficial effects:

[0027] 1. This utility model achieves synchronous and precise fixing of the upper and lower ends of the steel wheel through the threaded connection between the fixing component and the threaded moving sleeve and the vertical guiding design of the limiting groove of the slot plate. It solves the problems of low efficiency and complicated operation of traditional manual assembly. With the design that the threaded connection direction is consistent with the fixing direction of the steel wheel, the operator only needs to rotate in one direction to drive the slot plate to move linearly along the preset path, avoiding tilting or slippage. One person can complete the clamping of the steel wheel, which significantly shortens the assembly time and reduces the labor intensity.

[0028] 2. This utility model adopts a worm gear transmission system and a keyway torque transmission structure, combined with a double bearing mounting plate and a self-locking function, which improves the stability and safety of the transmission system, solves the vibration and accidental reverse rotation risks during the steel wheel flipping process, and ensures efficient torque transmission through the keyway cooperation between the worm and the drive shaft. The double bearing supports and disperses the axial load, reduces wear and extends service life. The self-locking engagement between the worm and the worm eliminates the need for additional locking after the steel wheel is flipped into position, avoiding the safety hazards caused by steel wheel slippage or uncontrolled flipping in traditional manual operation. At the same time, it reduces transmission noise and vibration and improves operational reliability.

[0029] 3. This utility model achieves flexible adaptation to different steel wheel specifications and convenient maintenance by adjusting the thread adjustment function of the bushing and the modular bearing seat design. The bushing adjustment can finely adjust the relative position of the turbine and the drive shaft, compensate for assembly errors and adapt to the assembly requirements of different steel wheel models. The bolt connection structure between the bearing seat and the turbine mounting base facilitates quick disassembly and maintenance, reducing downtime. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0031] Figure 2 This is an exploded view of the structure of this utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the present invention after the steel wheel is installed;

[0033] Figure 4 This is a schematic diagram of the overall structure of this utility model from another perspective.

[0034] Wherein: 10 - Main body of the rotating frame; 11 - Drive shaft of the rotating frame;

[0035] 20 - Steel wheel fixing groove plate; 21 - Groove plate limiting groove; 22 - Steel wheel lower end fixing groove plate;

[0036] 30-Fixed component; 301-Handle; 302-Screw; 31-Flexible threaded shaft; 32-Flexible threaded shaft moving sleeve;

[0037] 40-Turbine; 41-Worm; 42-Turbine mounting base; 43-Turbine rotation drive handle; 44-Bearing mounting plate; 45-Adjusting bushing;

[0038] 50 - Bearing housing one; 51 - Bearing housing two;

[0039] 60-Steel wheel. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

[0041] In the description of this utility model, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this utility model. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the protection scope of this utility model.

[0042] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4As can be seen, this utility model provides a tooling for facilitating the assembly of steel wheels for R300 road rollers. The lower end fixing groove plate 22 of the steel wheel 60 is welded to the lower edge of the rotating frame body 10 to directly support the lower edge of the steel wheel 60 and support the self-weight of the steel wheel 60. One end of the rotating frame drive shaft 11 is fixed to the rotating frame body 10 by a disc and bolts, and the other end of the rotating frame drive shaft 11 is fixed to the turbine mounting base 42 by a bearing seat 2 51. The rotating frame drive shaft 11 transmits the rotational power of the turbine 40, driving the rotating frame body 10 to rotate. The steel wheel fixing slot plate 20 is welded to the flexible threaded shaft moving sleeve 32 as a whole. The flexible threaded shaft moving sleeve 32 is sleeved on the screw 302 of the fixing component 30 and connected by threads. The steel wheel fixing slot plate 20 is embedded in the slot plate limiting groove 21. By moving the steel wheel fixing slot plate 20 up and down in the slot plate limiting groove 21, the upper end of the steel wheel 60 is clamped. The fixing component 30 includes a handle 301 and a screw. The screw 302 and the steel wheel are fixed in the slot plate 20. A handle 301 is installed on the top of the screw 302. The screw 302 passes through the bearing seat 50, which is installed on the main body 10 of the rotating frame by fixing bolts. Two fixing components 30 are provided, distributed on both sides of the steel wheel 60. The rotating handle 301 drives the screw 302 to rotate, which drives the flexible threaded shaft moving sleeve 32 to move linearly through thread transmission, thereby achieving the fastening of the steel wheel 60. The worm gear 40 is welded to the drive shaft 11 of the rotating frame and meshes with the worm 41. The turbine 40 is mounted on the middle section of the rotating frame drive shaft 11 and fixed by keyway or welding. The worm gear 41 is mounted on the turbine mounting base 42 by two bearings. The head of the worm gear 41 is connected to the turbine rotation drive handle 43 by bolts. The bearing mounting plate 44 is set on the top of the turbine mounting base 42 to fix the bearing of the worm gear 41. Manually shaking the turbine rotation drive handle 43 drives the worm gear 41 to rotate, thereby driving the turbine 40 and the rotating frame drive shaft 11 to move, realizing the flipping of the steel wheel 60. The adjusting bushing 45 is set between the turbine mounting base 42 and the rotating frame drive shaft 11. The bearing seat 51 is bolted to the adjusting bushing 45. By adding or removing shims or adjusting the thread position, the meshing center distance between the turbine 40 and the worm gear 41 is changed. The guide surface of the retaining groove 21 of the retaining plate is perpendicular to the support surface of the retaining groove plate 22 at the lower end of the steel wheel, and its length direction is parallel to the axis of the fixing component 30. It is used to limit the movement trajectory of the retaining groove plate 20 of the steel wheel, prevent deviation, and ensure that the upper and lower ends of the steel wheel 60 are tightened synchronously.

[0043] In one embodiment, firstly, the lower edge of the steel wheel 60 is placed in the lower end fixing groove plate 22 welded to the lower edge of the rotating frame body 10, completing the lower end support and fixation. Then, the upper end of the steel wheel is embedded in the steel wheel fixing groove plate 20. The operator rotates the handle 301 of the fixing assembly 30, driving the threaded screw 302 connected to it to rotate. This causes the flexible threaded rotating shaft sleeve 32 welded to the steel wheel fixing groove plate 20 to move vertically along the groove plate's limiting groove 21, thereby pushing the steel wheel fixing groove plate 20 downwards and applying clamping force to the upper end of the steel wheel. The guide surface of the groove plate's limiting groove 21 is perpendicular to the support surface of the lower end fixing groove plate 22, ensuring that the upper and lower ends of the steel wheel are synchronously tightened without deviation. The entire clamping process can be completed by a single person operating the handle 301. Stable clamping is achieved through the self-locking characteristic of the threaded transmission, effectively replacing the cumbersome process of manually adjusting bolts, significantly improving assembly efficiency and safety.

[0044] In one embodiment, a worker cranks the turbine rotation drive handle 43, causing the worm gear 41 bolted to it to rotate. The worm gear 41 meshes with the turbine 40 welded to the rotating frame drive shaft 11, converting the rotational motion of the worm gear into the rotation of the turbine 40 and the drive shaft 11. One end of the rotating frame drive shaft 11 is fixed to the rotating frame body 10 by a disc and bolts, and the other end is supported on the turbine mounting base 42 by a bearing seat 51. When the drive shaft 11 rotates, the rotating frame body 10 flips around the axis, and the steel wheel 60 is fixed to the rotating frame body 10 by the steel wheel lower end fixing groove plate 22 and the steel wheel fixing slot plate 20, and completes a 360° controllable flip synchronously with it. The reverse self-locking characteristics of the worm gear 41 and the turbine gear 40 allow the steel wheel to remain stably at any angle without additional fixing; the adjusting bushing 45 adjusts the meshing center distance between the turbine gear and the worm gear by adding or removing shims, ensuring smooth transmission; the entire process requires only one person to operate the handle, reducing the time from more than 10 minutes in traditional manual operation to less than 2 minutes, completely solving the technical problems of low efficiency and high danger of manual turning, and realizing mechanized, precise, safe and efficient operation.

[0045] Working principle: The lower end of the steel wheel 60 is supported and fixed by the lower end fixing groove plate 22 welded to the lower edge of the rotating frame body 10, and the upper end is clamped by the steel wheel fixing groove plate 20. The operator rotates the handle 301 of the fixing component 30, and the drive screw 302 drives the flexible threaded rotating shaft movement sleeve 32 connected to it to move linearly along the limiting groove 21 of the groove plate, so that the groove plate 20 presses down to the upper end of the steel wheel, completing the bidirectional fixation; then, by shaking the turbine rotation drive handle 43, the worm gear 41 is driven to rotate. The worm gear 41 meshes with the turbine 40 welded to the rotating frame drive shaft 11, driving the drive shaft 11 to rotate, driving the rotating frame body 10 and the steel wheel 60 fixed on it to rotate as a whole. The reverse self-locking characteristic of the turbine and worm gear ensures the stability of the rotation angle; the adjusting bushing 45 adjusts the meshing accuracy of the turbine 40 and worm gear 41 by adding or removing shims to ensure the reliability of the transmission. The entire tooling system replaces manual labor with mechanical transmission, enabling rapid clamping of steel wheels, safe rotation, and precise assembly, thus completely solving the technical problems of traditional assembly that rely on manual labor, are inefficient, and dangerous.

[0046] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A tooling for facilitating the assembly of steel wheels on an R300 road roller, characterized in that, include: The rotating frame body (10) has a steel wheel lower end fixing groove plate (22) welded to its lower edge to support the lower edge of the steel wheel (60); The steel wheel fixing slot plate (20) is welded to the flexible threaded shaft moving sleeve (32) as a whole. The flexible threaded shaft moving sleeve (32) is sleeved on the fixing component (30) and connected by threads. The fixing component (30) includes a handle (301), a screw (302) and a steel wheel fixing slot plate (20). The handle (301) is installed on the top of the screw (302). The screw (302) passes through a bearing seat (50). The bearing seat (50) is installed on the rotating frame body (10) by fixing bolts. There are two fixing components (30). The steel wheel fixing slot plate (20) is set in the slot plate limiting groove (21) and moves linearly along the slot plate limiting groove (21); Turbine (40), the turbine (40) is welded to the rotating frame drive shaft (11), one end of the rotating frame drive shaft (11) is fixed to the rotating frame body (10) by a disc and bolts, and the other end of the rotating frame drive shaft (11) is fixed to the turbine mounting base (42) by a bearing seat (51); An adjusting bushing (45) is provided between the turbine mounting base (42) and the rotating frame drive shaft (11); The worm (41) is mounted on the turbine mounting base (42) by two bearings. The head of the worm (41) is connected to the turbine rotation drive handle (43) by bolts, and the worm (41) meshes with the turbine (40).

2. The tooling for facilitating the assembly of the steel wheel (60) of the R300 road roller according to claim 1, characterized in that: The threaded connection direction of the fixed component (30) and the flexible threaded rotating shaft sleeve (32) is consistent with the fixing direction of the steel wheel (60).

3. The tooling for facilitating the assembly of the steel wheel (60) of the R300 road roller according to claim 1, characterized in that: The turbine mounting base (42) is provided with two bearing mounting plates (44), and the worm (41) is fixed to the top of the turbine mounting base (42) through the bearing mounting plates (44).

4. The tooling for facilitating the assembly of the steel wheel (60) of the R300 road roller according to claim 1, characterized in that: The tail of the rotating frame drive shaft (11) is fixed to the rotating frame body (10) by a disc and bolts, and the turbine (40) is mounted on the rotating frame drive shaft (11).

5. The tooling for facilitating the assembly of the steel wheel (60) of the R300 road roller according to claim 1, characterized in that: The adjusting bushing (45) is provided with threads, and the bearing seat (51) is bolted onto the adjusting bushing (45).

6. The tooling for facilitating the assembly of the steel wheel (60) of the R300 road roller according to claim 1, characterized in that: The guide surface of the card slot plate limiting groove (21) is perpendicular to the support surface of the lower end fixing groove plate (22) of the steel wheel, and the length direction of the card slot plate limiting groove (21) is parallel to the axis of the fixing component (30).

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