Wheel assembly tool and system

Abstract

The utility model discloses a wheel assembly tool and system, and belongs to the technical field of wheel assembly equipment. According to the wheel assembly tool, the wheel is guided through the guide sleeve, so that the wheel can be rapidly arranged outside the first shaft part in a sleeving mode under the guide effect of the guide sleeve, a wheel hole of the wheel does not need to be manually centered with the first shaft part, and the wheel assembly efficiency can be improved. The second shaft part is protected through the protective sleeve, the deformation amount of the second shaft part in the wheel assembling process is reduced, the size precision of the second shaft part is guaranteed, and follow-up other components (such as a bearing) can be conveniently installed outside the second shaft part. The pressing sleeve drives the acting force of the output end to push the wheel to move towards the second shaft part and sleeve the first shaft part, so that the output end can apply the acting force to the wheel conveniently, and the structure of the output end can be simplified. The stand column is used for supporting and limiting the guide sleeve and the protective sleeve, radial displacement of the guide sleeve and the protective sleeve in the wheel assembling process is avoided, and safety in the assembling process is guaranteed.

Description

Technical Field

[0001] This application belongs to the technical field of wheel assembly equipment, and particularly relates to a wheel assembly tooling and system. Background Technology

[0002] Currently, wheel mounting on motor shafts is very common and crucial, as the quality of the mounting method directly affects the overall operation of the machine. In related technologies, the commonly used methods for wheel assembly are static pressing and temperature difference methods.

[0003] The thermal difference method involves the hub expanding when heated or the shaft end contracting when cooled, resulting in the inner diameter of the hub's shaft bore being slightly larger than the shaft end diameter. This achieves the so-called "easy assembly value," allowing the hub to be easily fitted onto the shaft without applying significant force. This method is very suitable for hubs made of brittle materials, but it requires much higher precision when assembling with ductile materials, especially when assembling with a motor shaft.

[0004] If the static pressing method is used, the wheels need to be assembled by an assembly device with components such as a press and positioning components. For example, the wheel and axle press-fitting machine disclosed in patent publication number CN217167340U has low assembly efficiency. Utility Model Content

[0005] This application aims to at least partially address the technical problem of low assembly efficiency in related art assembly devices. To this end, this application provides a wheel assembly fixture and system.

[0006] Firstly, embodiments of this application provide a wheel assembly fixture for assembling a wheel onto a motor. The motor includes a motor body and a motor shaft. The motor shaft includes a first shaft portion and two second shaft portions. The first shaft portion is located between and connected to the two second shaft portions. The diameter of the first shaft portion is larger than that of the second shaft portions. The wheel is assembled onto the first shaft portion. The wheel assembly fixture includes:

[0007] A guide sleeve and a protective sleeve are coaxially arranged. The outer circumferential surface of the guide sleeve is a conical surface, and the outer diameter of its large end is equal to the diameter of the first shaft portion. The guide sleeve is used to be fitted over one of the second shaft portions to guide the wheel onto the first shaft portion. The protective sleeve is used to be fitted over the other second shaft portion and to contact the load-bearing mechanism of the press.

[0008] Two columns are arranged opposite each other along the axial direction of the guide sleeve. The upper end of each column is provided with a limiting groove. The guide sleeve and the protective sleeve are respectively located in the two limiting grooves.

[0009] A pressure sleeve fitted outside the guide sleeve is used to abut against the output end of the press and the wheel, so that the pressure sleeve pushes the wheel onto the second shaft along the axial direction of the guide sleeve.

[0010] In some embodiments, the bottom walls of the protective sleeve and the guide sleeve are provided with clearance holes. The wheel assembly fixture also includes a connector located in the clearance hole for fixed connection to the guide sleeve and one of the second shaft portions, the protective sleeve and the other second shaft portion.

[0011] In some embodiments, the peripheral wall of the pressure sleeve is provided with a clearance groove for avoiding the column.

[0012] In some embodiments, the wheel assembly fixture further includes a liner disposed on the end face of the pressure sleeve that abuts against the wheel.

[0013] In some embodiments, the guide sleeve has a mounting groove, and the guide sleeve is fitted over the second shaft portion through the mounting groove, wherein the depth of the mounting groove is not less than the length of the second shaft portion.

[0014] In some embodiments, the wheel assembly fixture further includes a base, on which both columns are mounted.

[0015] In some embodiments, at least one of the columns is slidably connected to the base along the axial direction of the guide sleeve.

[0016] In some embodiments, the wheel assembly fixture further includes a support platform mounted on the base, the support platform being located between the two columns for supporting the motor body.

[0017] Secondly, embodiments of this application provide a wheel assembly system, including a press and the wheel assembly fixture described in the first aspect above. The press includes a load-bearing mechanism and an output end. The load-bearing mechanism and the output end are arranged opposite each other along the axial direction of the guide sleeve. The pressure sleeve and the protective sleeve are both located between the load-bearing mechanism and the output end. The protective sleeve is in contact with the load-bearing mechanism. The output end can move along the axial direction of the guide sleeve, and the pressure sleeve is located on the movement path of the output end.

[0018] In some embodiments, the load-bearing mechanism includes a support base, a load-bearing component, a connecting assembly, and a fixing plate. The load-bearing component and the fixing plate are located on opposite sides of the support base. The connecting assembly passes through the load-bearing component and is detachably connected to the load-bearing component and the fixing plate. The protective sleeve is in contact with the load-bearing component.

[0019] This utility model has at least the following beneficial effects:

[0020] This wheel assembly fixture uses a guide sleeve to guide the wheel, allowing it to be quickly fitted onto the first axle without manual alignment of the wheel bore with the first axle, thus improving assembly efficiency. A protective sleeve protects the second axle, reducing deformation during assembly and ensuring dimensional accuracy, facilitating the installation of other components (e.g., bearings) on its outer surface. A pressure sleeve drives the output force, propelling the wheel towards the second axle and fitting it onto the first axle, simplifying the output force application and streamlining its structure. A column supports and limits the guide sleeve and protective sleeve, preventing radial displacement and ensuring assembly safety. This wheel assembly fixture offers advantages such as high assembly efficiency and minimal deformation of the second axle after wheel assembly. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the wheel assembly system in one or more embodiments of this application is shown.

[0023] Figure 2 A schematic diagram of the structure when the column, support platform and base are connected in one or more embodiments of this application is shown.

[0024] Figure 3 It shows Figure 1 Enlarged view of point A in the middle.

[0025] Figure 4 It shows Figure 1 Enlarged view of section B in the middle.

[0026] Figure 5 A front view of the pressure sleeve is shown in one or more embodiments of this application.

[0027] Figure 6 A left view of the pressure sleeve in one or more embodiments of this application is shown.

[0028] Figure 7 A bottom view of the pressure sleeve in one or more embodiments of this application is shown.

[0029] Reference numerals: 100-Wheel assembly fixture, 110-Guide sleeve, 110a-Allowing hole, 110b-Mounting groove, 120-Protective sleeve, 130-Column, 130a-Limiting groove, 140-Pressure sleeve, 140a-Allowing groove, 150-Connector, 160-Pad, 180-Base, 170-Support platform, 200-Press machine, 210-Bearing mechanism, 211-Support seat, 212-Bearing component, 213-Connecting assembly, 214-Fixing plate, 220-Output end, 1000-Wheel assembly system, 10-Motor, 11-Motor body, 12-Motor shaft, 121-First shaft, 122-Second shaft, 20-Wheel. Detailed Implementation

[0030] 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.

[0031] It should be noted that all directional indications in the embodiments of this utility model are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. In this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction relationship between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. In addition, the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] In related technologies, assembly devices for mounting wheels onto motor shafts suffer from low assembly efficiency. This application provides a wheel assembly fixture and system, which can at least partially solve the problem of low assembly efficiency in related technologies.

[0033] This application is described below with reference to the accompanying drawings and specific embodiments:

[0034] like Figure 1 and Figure 2 As shown, the wheel assembly fixture 100 is used to assemble the wheel 20 onto the motor 10. The motor 10 includes a motor body 11 and a motor shaft 12. The motor shaft 12 has a first shaft portion 121 and two second shaft portions 122. The first shaft portion 121 is located between and connected to the two second shaft portions 122. The diameter of the first shaft portion 121 is larger than that of the second shaft portions 122. The wheel is assembled onto the first shaft portion 121.

[0035] Specifically, the second shaft portion 122 of the motor shaft 12 is connected to the motor body 11, and the motor body 11 can drive the motor shaft 12 to rotate, thereby driving the wheel 10 on the motor shaft 12 to rotate. The motor body 11 includes components such as a drive motor (which may include a stator, rotor, etc.) and a planetary reducer (which may include a sun gear, planet gears, planet gear connecting frame, etc.). The structure of the motor body 11 is diverse and is known to those skilled in the art, and will not be described in detail or limited here.

[0036] Wheel assembly tooling 100 includes:

[0037] The guide sleeve 110 and the protective sleeve 120 are coaxially arranged. The outer peripheral surface of the guide sleeve 110 is a conical surface, and the outer diameter of its large end is equal to the diameter of the first shaft portion 121. The guide sleeve 110 is used to fit over one of the second shaft portions 122 to guide the wheel 20 onto the first shaft portion 121. The protective sleeve 120 is used to fit over the other second shaft portion 122 and to contact the load-bearing mechanism 210 of the press 200.

[0038] In other words, the guide sleeve 110 and the protective sleeve 120 are respectively fitted onto both ends of the motor shaft 12, that is, respectively fitted onto the two second shaft portions 122 of the motor shaft 12. The outer peripheral surface of the guide sleeve 110 is conical, and the outer diameter of the large end is equal to the diameter of the first shaft portion 121, so that the wheel 20 can be fitted into the guide sleeve 110 through the small end, slide along the outer peripheral surface of the guide sleeve 110, and then slide out of the guide sleeve 110 and be fitted onto the second shaft portion 121. The guide sleeve 110 plays the role of guiding the wheel 20. When the wheel 20 is subjected to force by the application mechanism 220 of the press 200, the protective sleeve 120 will contact the load-bearing structure 210 when the wheel 20 is interference-fitted outside the second axle portion 122. By placing the protective sleeve 120 outside the second axle portion 122, direct contact between the second axle portion 122 and the load-bearing structure 210 is avoided during the assembly of the wheel 20, thus protecting the second axle portion 122. This helps to reduce the deformation of the second axle portion 122 caused by the installation of the wheel 20 and facilitates the installation of bearings and other components outside the second axle portion 122.

[0039] Two columns 130 are arranged opposite each other along the axial direction of the guide sleeve 110. The upper end of the column 130 is provided with a limiting groove 130a. The guide sleeve 110 and the protective sleeve 120 are respectively located in the two limiting grooves 130a.

[0040] The function of the column 130 is to support and limit the guide sleeve 110 and protective sleeve 120 located thereon. When the guide sleeve 110 and protective sleeve 120 are located in the limiting groove 130a, the guide sleeve 110 and protective sleeve 120 will not move radially along the guide sleeve 110 under the limiting action of the limiting groove 130a. The limiting groove 130a can be a V-shaped groove, an arc-shaped groove, etc. The size of the limiting groove 130a is related to the size of the guide sleeve 110 and protective sleeve 120, and is not limited in this application.

[0041] The pressure sleeve 140, which is sleeved outside the guide sleeve 110, is used to abut against the output end 220 of the press 200 and the wheel 20, so that the pressure sleeve 140 pushes the wheel 20 onto the second shaft portion 122 along the axial direction of the guide sleeve 110 under the action of the output end 220.

[0042] When assembling the wheel 20, both the wheel 20 and the pressure sleeve 140 are fitted over the guide sleeve 110, with the wheel 20 located on the side of the pressure sleeve 140 closer to the first shaft portion 121. A force is applied to the pressure sleeve 140 through the output end 220, pushing the pressure sleeve 140 and thus causing the wheel 20 to move towards the first shaft portion 121, so that the wheel 20 is interference-fitted onto the second shaft portion 122. The pressure sleeve 140, fitted over the guide sleeve 110, is used to transmit the force from the output end 220. One side of the pressure sleeve abuts against the output end 220, and the other side abuts against the wheel 20, thereby transmitting the force from the output end 220 to the wheel 20, which in turn pushes the wheel 20 towards the second shaft portion 122 and fits onto it.

[0043] The wheel assembly fixture 100 of this application provides guidance for the wheel 20 through the guide sleeve 110, allowing the wheel 20 to be quickly fitted onto the first axle portion 121 under the guidance of the guide sleeve 110, eliminating the need for manual alignment of the wheel hole of the wheel 20 with the first axle portion 121, thus improving the efficiency of wheel 20 assembly. The protective sleeve 120 protects the second axle portion 122, reducing the deformation of the second axle portion 122 during wheel 20 assembly, ensuring the dimensional accuracy of the second axle portion 122, and facilitating the subsequent installation of other components (such as bearings) onto the second axle portion 122. The force transmitted through the pressure sleeve 140 to the output end 220 pushes the wheel 20 toward the second axle portion 122 and onto the first axle portion 121, facilitating the application of force by the output end 220 to the wheel 20 and simplifying the structure of the output end 220. The column 130 is used to support and limit the guide sleeve 110 and the protective sleeve 120, preventing the guide sleeve 110 and the protective sleeve 120 from radial displacement along the guide sleeve 110 during the wheel 20 assembly process, thus ensuring the safety of the assembly process. The wheel assembly fixture 100 of this application has the advantages of high assembly efficiency and small deformation of the second axle portion 122 after the wheel 20 is assembled.

[0044] like Figure 3 and Figure 4 As shown, in some embodiments, the bottom walls of the protective sleeve 120 and the guide sleeve 110 are provided with clearance holes 110a. The wheel assembly fixture 100 also includes a connector 150, which is located in the clearance hole 110a and is used to fix the guide sleeve 110 and one of the second shaft portions 122, the protective sleeve 120 and the other second shaft portion 122.

[0045] like Figure 3 and Figure 4As shown, both the protective sleeve 120 and the guide sleeve 110 include a peripheral wall and a bottom wall. The peripheral wall of the protective sleeve 120 is disposed around the peripheral wall of the second shaft portion 122 located to the left of the first shaft portion 121, and the peripheral wall of the guide sleeve 110 is disposed around the peripheral wall of the second shaft portion 122 located to the right of the first shaft portion 121. The connector 150 is used to fix the guide sleeve 110 and the second shaft portion 122 located to the left of the first shaft portion 121, and the connector 150 is also used to fix the protective sleeve 120 and the second shaft portion 122 located to the right of the first shaft portion 121. Under the action of the connector 150, the bottom wall of the guide sleeve 110 is in contact with the left end face of the second shaft portion 122 located to the left of the first shaft portion 121, and the bottom wall of the protective sleeve 120 is in contact with the right end face of the second shaft portion 122 located to the right of the first shaft portion 121. After the connector is installed, the guide sleeve 110 and the protective sleeve 120 can be fixed outside the second shaft portion 122, preventing the guide sleeve 110 and the protective sleeve 120 from falling off during the hoisting of the wheel 20. The connector 150 can be a bolt, screw, etc. The clearance hole 110a is used to allow the connector 150 to pass through the clearance hole 110a and extend into the protective sleeve 120 and the guide sleeve 110 to connect with the second shaft portion 122.

[0046] During the process of pushing the wheel 20 through the output end 220, the bottom wall of the protective sleeve 120 will come into contact with the load-bearing mechanism 210. In some embodiments, when the connector 150 connects the second shaft portion 122 and the protective sleeve 120, the connector 150 does not protrude from the bottom wall of the protective sleeve 120 to avoid the connector 150 coming into contact with the load-bearing mechanism 210, which would result in a large local force and cause local stress concentration and damage to the connector 150 or the output end 220.

[0047] like Figure 1 , Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, the peripheral wall of the pressure sleeve 140 is provided with a relief groove 140a for avoiding the column 130.

[0048] The guide sleeve 110 is supported in the limiting groove 130a of the column 130 and will contact the inner wall of the limiting groove 130a. When the output end 220 applies force to the pressure sleeve 140, the pressure sleeve 140 will move toward the second shaft portion 122. The clearance groove 140a opened on the peripheral wall of the pressure sleeve 140 is used to avoid the column 130, so as to ensure that the column 130 will not interfere with the movement of the pressure sleeve 140 during the movement of the pressure sleeve 140 toward the second shaft portion 122.

[0049] like Figure 3 As shown, in some embodiments, the wheel assembly fixture 100 further includes a liner 160, which is disposed on the end face of the pressure sleeve 140 that abuts against the wheel 20.

[0050] like Figure 3 As shown, a gasket 160 is provided on the right end face of the pressure sleeve 140. The gasket 160 is made of silicone, rubber, etc. If the pressure sleeve 140 directly contacts the wheel 20, under the action of the output end 220, the pressure sleeve 140 can easily leave an indentation on the wheel 20, causing damage to the shape of the wheel 20. By setting the gasket 160, the gasket 160 is made to contact the wheel 20, which can avoid indentation on the surface of the wheel 20 to a certain extent, and ensure the quality of the wheel 20 after installation.

[0051] In some embodiments, the wheel assembly fixture 100 also includes a base 180, on which two columns 130 are mounted.

[0052] In some embodiments, at least one column 130 is slidably connected to the base 180 along the axial direction of the guide sleeve 110.

[0053] With this design, the distance between the two columns 130 can be reduced or increased, so that the wheel assembly fixture 100 can be suitable for motor shafts 12 of different lengths.

[0054] In some embodiments, the wheel assembly fixture 100 also includes a support platform 170 mounted on a base 180, the support platform 170 being located between two columns 130 for supporting the motor body 11.

[0055] It should be noted that, as Figure 1 As shown, when both ends of the motor shaft 12 are located within the guide sleeve 110 and the protective sleeve 120, and the guide sleeve 110 and the protective sleeve 120 are located within the limiting groove 130a, there is a gap between the motor body 11 and the support platform 170. In some embodiments, the gap value is 10mm. The support platform 170 is provided to prevent the motor 10 from falling to the ground in case of an accident. Specifically, the support platform 170 is located below the motor body 11. In the event of a breakage of the column 130 or a breakage of the suspension rope, the motor body 11 falls onto the support platform 170 and is supported by the support platform 170, preventing the motor 10 from falling to the ground and causing an accident. The structure of the support platform 170 is diverse and is not limited in this application.

[0056] Based on the same inventive concept, this application also provides a wheel assembly system 1000, including a press 200 and the aforementioned wheel assembly fixture 100. The press 200 includes a load-bearing mechanism 210 and an output end 220. The load-bearing mechanism 210 and the output end 220 are arranged opposite each other along the axial direction of the guide sleeve 110. The pressure sleeve 140 and the protective sleeve 120 are both located between the load-bearing mechanism 210 and the output end 220. The protective sleeve 120 is in contact with the load-bearing mechanism 210. The output end 220 can move along the axial direction of the guide sleeve 110, and the pressure sleeve 140 is located on the movement path of the output end 220.

[0057] The press can be a screw press, a crank-connecting rod press, or a hydraulic cylinder press, etc., and the specific structures of these presses are known to those skilled in the art and will not be described in detail here. The transmission mechanism of the press 200 drives the output end 220 to reciprocate, that is, to move towards the load-bearing structure 210 or away from the load-bearing structure 210. The output end 220 contacts the object being pressed and supports it. The load-bearing structure 210 of the press 200 is fixed. When the output end 220 moves towards the load-bearing structure 210, it applies pressure to the object being pressed; when the output end 220 moves away from the load-bearing structure 210, it can remove the object from the load-bearing structure 210. When the press is a hydraulic cylinder press, the output end 220 is the telescopic cylinder head of the press 200.

[0058] The output end 220 can reciprocate along the axial direction of the guide sleeve 110. The pressure sleeve 140 is located on the movement path of the output end 220. When the output end 220 moves toward the pressure sleeve 140, the output end 220 can push the pressure sleeve 140 to move, and the pressure sleeve 140 in turn pushes the wheel 20 to move, so that the wheel 20 is fitted onto the first shaft portion 121. The load-bearing mechanism 210 is stationary. The load-bearing mechanism 210 supports the protective sleeve 120, and thus supports the motor shaft 12, preventing the motor shaft 12 from moving when the output end 220 applies force to the pressure sleeve 140, so as to ensure that the wheel 20 can move relative to the motor shaft 12 and thus fit onto the first shaft portion 121.

[0059] In some embodiments, the load-bearing mechanism 210 includes a support base 211, a load-bearing member 212, a connecting component 213, and a fixing plate 214. The load-bearing member 212 and the fixing plate 214 are located on both sides of the support base 211, the connecting component 213 passes through the load-bearing member 212 and is detachably connected to the load-bearing member 212 and the fixing plate 214, and the protective sleeve 120 is in contact with the support base 211.

[0060] The support base 211 contacts the protective sleeve 120. The support base 211 is prone to deformation or damage. This design allows the support base 211 to be removed from the load-bearing component 212, making it replaceable after deformation or damage. Specifically, the connecting assembly 213 includes a connecting rod and a nut. The left end of the connecting rod is threaded to the support base 211, and the right end of the connecting rod extends out of the fixing plate 214 and is threaded to the nut.

[0061] The following describes how to use the wheel assembly tool 100 of this application:

[0062] First, guide sleeve 110 and protective sleeve 120 are respectively fitted onto the two second shaft portions 122 of motor 10, and guide sleeve 110 and second shaft portion 122, and protective sleeve 120 and second shaft portion 122 are fixedly connected by connector 150;

[0063] Next, the motor 10 is hoisted by a lifting device, and the direction of the lifting device is controlled to place the guide sleeve 110 into the guide groove near the output end 220, and the protective sleeve 120 into the guide groove near the load-bearing mechanism 210, and to make the protective sleeve 120 contact the support base 211.

[0064] Next, one end of the guide sleeve 110 is lifted so that the guide sleeve 110 is outside the limiting groove 130a, and the wheel 20 is fitted outside the guide sleeve 110;

[0065] Next, the lifting device is lowered so that the guide sleeve 110 is located in the limiting groove 130a;

[0066] Next, the pressure sleeve 140 is fitted onto the outside of the guide sleeve 110;

[0067] Next, the press 200 is started, so that the output end 220 pushes the pressure sleeve 140 to assemble the wheel 20 onto the second shaft 122. At this point, the wheel 20 is assembled on one side of the motor shaft 12.

[0068] Next, the motor 10 is lifted and rotated 180 degrees, and the positions of the guide sleeve 110 and the protective sleeve 120 on it are interchanged;

[0069] Next, lower the lifting device, place the guide sleeve 110 into the limiting groove 130a near the output end 220, place the protective sleeve 120 into the limiting groove 130a near the load-bearing mechanism 210, and make the protective sleeve 120 contact the support base 211.

[0070] Next, one end of the guide sleeve 110 is lifted so that the guide sleeve 110 is outside the limiting groove 130a, and another wheel 20 is fitted outside the guide sleeve 110;

[0071] Next, the lifting device is lowered so that the guide sleeve 110 is located in the limiting groove 130a;

[0072] Next, the pressure sleeve 140 is fitted onto the outside of the guide sleeve 110;

[0073] Next, the hydraulic press is started, causing the output end 220 to push the pressure sleeve 140 to assemble another wheel 20 onto the second axle 122. At this point, wheels 20 are assembled on both sides of the motor shaft 12.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0075] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0076] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A wheel assembly fixture, characterized in that, For assembling a wheel (20) onto a motor (10), the motor (10) includes a motor body (11) and a motor shaft (12), the motor shaft (12) includes a first shaft portion (121) and two second shaft portions (122), the first shaft portion (121) is located between and connected to the two second shaft portions (122), the diameter of the first shaft portion (121) is larger than that of the second shaft portions (122), the wheel (20) is assembled onto the first shaft portion (121), the wheel assembly fixture (100) includes: A guide sleeve (110) and a protective sleeve (120) are coaxially arranged. The outer circumferential surface of the guide sleeve (110) is a conical surface, and the outer diameter of its large end is equal to the diameter of the first shaft part (121). The guide sleeve (110) is used to be sleeved on one of the second shaft parts (122) to guide the wheel (20) to the first shaft part (121). The protective sleeve (120) is used to be sleeved on the other second shaft part (122) and to contact the load-bearing mechanism (210) of the press (200). Two columns (130) are arranged opposite each other along the axial direction of the guide sleeve (110). The upper end of the column (130) is provided with a limiting groove (130a). The guide sleeve (110) and the protective sleeve (120) are respectively located in the two limiting grooves (130a). A pressure sleeve (140) fitted outside the guide sleeve (110) is used to abut against the output end (220) of the press (200) and the wheel (20), so that the pressure sleeve (140) pushes the wheel (20) onto the second shaft (122) along the axial direction of the guide sleeve (110) under the action of the output end (220).

2. The wheel assembly fixture according to claim 1, characterized in that, The bottom walls of the protective sleeve (120) and the guide sleeve (110) are provided with clearance holes (110a). The wheel assembly fixture (100) also includes a connector (150). The connector (150) is located in the clearance hole (110a) and is used to fix the guide sleeve (110) and one of the second shaft portions (122), the protective sleeve (120) and the other second shaft portion (122).

3. The wheel assembly fixture according to claim 1, characterized in that, The peripheral wall of the pressure sleeve (140) is provided with a relief groove (140a) for avoiding the column (130).

4. The wheel assembly fixture according to claim 3, characterized in that, The wheel assembly fixture (100) also includes a liner (160), which is disposed on the end face of the pressure sleeve (140) that abuts against the wheel (20).

5. The wheel assembly fixture according to claim 1, characterized in that, The guide sleeve (110) has a mounting groove (110b), and the guide sleeve (110) is sleeved on the outside of the second shaft portion (122) through the mounting groove (110b). The depth of the mounting groove (110b) is not less than the length of the second shaft portion (122).

6. The wheel assembly fixture according to any one of claims 1 to 5, characterized in that, The wheel assembly fixture (100) also includes a base (180), on which both of the columns (130) are mounted.

7. The wheel assembly fixture according to claim 6, characterized in that, At least one of the columns (130) is slidably connected to the base (180) along the axial direction of the guide sleeve (110).

8. The wheel assembly fixture according to claim 6, characterized in that, The wheel assembly fixture (100) also includes a support platform (170) mounted on the base (180), the support platform (170) being located between the two columns (130) for supporting the motor body (11).

9. A wheel assembly system, characterized in that, The device includes a press (200) and a wheel assembly fixture (100) according to any one of claims 1-8. The press (200) includes a load-bearing mechanism (210) and an output end (220). The load-bearing mechanism (210) and the output end (220) are arranged opposite each other along the axial direction of the guide sleeve (110). The pressure sleeve (140) and the protective sleeve (120) are both located between the load-bearing mechanism (210) and the output end (220). The protective sleeve (120) is in contact with the load-bearing mechanism (210). The output end (220) can move along the axial direction of the guide sleeve (110), and the pressure sleeve (140) is located on the movement path of the output end (220).

10. The wheel assembly system according to claim 9, characterized in that, The load-bearing mechanism (210) includes a support base (211), a load-bearing component (212), a connecting component (213), and a fixing plate (214). The load-bearing component (212) and the fixing plate (214) are located on both sides of the support base (211). The connecting component (213) passes through the load-bearing component (212) and is detachably connected to the load-bearing component (212) and the fixing plate (214). The protective sleeve (120) is in contact with the support base (211).

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