Wheel body assembling device

Abstract

The utility model discloses an assembling device for a wheel body. The assembling device comprises a base, a limiting pin and a dismounting and mounting positioning sleeve, the base is used for mounting a motor; the limiting pin is fixedly arranged on the base and used for abutting against the end, close to the base, of a main shaft of the motor. A containing cavity is formed in the dismounting and mounting positioning sleeve and used for containing the wheel body, a first limiting step is formed by the containing cavity and the inner wall of the dismounting and mounting positioning sleeve and used for abutting against the end face of the wheel body, and a second limiting step is further arranged in the dismounting and mounting positioning sleeve and used for abutting against the end face of the wheel body. The second limiting step is used for abutting against the other end of the motor main shaft. The second limiting step abuts against the motor spindle, the installation depth of the wheel body relative to the motor spindle is controlled, and it is guaranteed that the installation distance of the wheel body on the motor spindle meets the requirement. The limiting pin abuts against the bottom end of the motor spindle, so that the axial load borne by the motor spindle is offset, the motor is prevented from being damaged, and the service life of the motor is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to in-vitro diagnosis equipment technical field, especially a kind of assembling device of wheel body. BACKGROUND

[0002] Synchronous belt / wheel transmission is a common transmission mode in the instrument of in-vitro diagnosis industry. In this transmission mode, the cooperation mode of wheel body and motor main shaft is mostly gap fit, to facilitate the disassembly of wheel body. But in some specific occasions, wheel body has positioning section, and it needs interference fit with motor main shaft. This cooperation mode causes certain difficulty to the installation and disassembly of wheel body: when installing wheel body from motor main shaft, because it is interference fit, it needs external force, which will lead to two problems, first, during installation, motor main shaft will bear axial load under external force, if axial load is too large, motor main shaft will move up and down, which is not allowed in assembly. Second, the relative position of wheel body and motor main shaft is not easy to control.

[0003] Therefore, there are still defects and deficiencies in the prior art, and how to provide an assembling device of wheel body is a technical problem to be solved by those skilled in the art. CONTENT OF UTILITY MODEL

[0004] The utility model aims at providing an assembling device of wheel body, which solves the technical problems that, when wheel body is installed on motor main shaft by interference fit, motor main shaft will move up and down if it bears too large axial load, and the relative position of wheel body and motor main shaft is not easy to control.

[0005] To achieve the above-mentioned purpose, the utility model provides an assembling device of wheel body, comprising:

[0006] A base is used for installing a motor.

[0007] A limiting pin is fixedly arranged on the base and used for abutting against one end of the main shaft of the motor close to the base.

[0008] A dismounting and positioning sleeve is provided with an accommodating cavity therein, the accommodating cavity is used for accommodating the wheel body, the accommodating cavity and the inner wall of the dismounting and positioning sleeve form a first limiting step, the first limiting step is used for abutting against the end face of the wheel body, and the dismounting and positioning sleeve is further provided with a second limiting step, and the second limiting step is used for abutting against the other end of the motor main shaft.

[0009] Preferably, the dismounting and positioning sleeve is provided with a plurality of connecting holes, the dismounting and positioning sleeve is connected with the wheel body through fasteners, and the fasteners are threadedly connected with the wheel body through the connecting holes.

[0010] Preferably, the connecting holes are located on the side surface of the dismounting and positioning sleeve.

[0011] Preferably, the plurality of connecting holes are uniformly distributed circumferentially along the dismounting positioning sleeve.

[0012] Preferably, the connecting holes are light holes or threaded holes.

[0013] Preferably, the dismounting positioning sleeve is further threaded with a dismounting member, and the dismounting member abuts against the end of the motor main shaft through the top of the dismounting positioning sleeve.

[0014] Preferably, the top of the dismounting positioning sleeve is provided with a threaded hole, the threaded hole is in communication with the accommodating cavity, and the dismounting member is threaded with the dismounting positioning sleeve through the threaded hole.

[0015] Preferably, the base is provided with a mounting hole, and the limiting pin is arranged in the mounting hole, and the top end of the limiting pin abuts against the motor main shaft.

[0016] Preferably, the fastener is a fastening bolt or a fastening screw.

[0017] With respect to the above background, the assembly device of the wheel body provided by the present application, when the wheel body is fixed on the main shaft of the motor through interference fit, the wheel body is correspondingly accommodated in the accommodating cavity, the top of the wheel body abuts against the first limiting step, and the top end of the motor main shaft abuts against the second limiting step. The abutment of the second limiting step against the motor main shaft plays a positioning role, effectively controls the installation depth of the wheel body relative to the motor main shaft, and ensures that the installation distance of the wheel body on the motor main shaft meets the requirements. During the process of applying force to the dismounting positioning sleeve to press the wheel body towards the main shaft of the motor, the abutment of the limiting pin against the bottom end of the motor main shaft can offset the axial load borne by the motor main shaft, so that the motor main shaft does not move up and down, and damage to the motor caused by excessive axial load is avoided, thereby prolonging the service life of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0019] Figure 1 The exploded schematic view of the assembly device of the wheel body provided by the embodiment of the present application;

[0020] Figure 2 The structural schematic view of the dismounting positioning sleeve in the assembly device of the wheel body provided by the embodiment of the present application;

[0021] Figure 3The cross-sectional view schematic diagram of the dismounting positioning sleeve of the assembling device of the wheel body provided by the embodiment of the utility model;

[0022] Figure 4 The cross-sectional structure schematic diagram of the assembling device of the wheel body provided by the embodiment of the utility model during installation;

[0023] Figure 5 The cross-sectional structure schematic diagram of the assembling device of the wheel body provided by the embodiment of the utility model during installation;

[0024] Figure 6 The cross-sectional structure schematic diagram of the assembling device of the wheel body provided by the embodiment of the utility model during installation;

[0025] Figure 7 The cross-sectional structure schematic diagram of the assembling device of the wheel body provided by the embodiment of the utility model during installation.

[0026] Figures 1 to 7 Reference signs: 10, base; 101, limiting pin; 102, mounting hole; 11, motor; 111, main shaft; 12, wheel body; 13, dismounting positioning sleeve; 131, accommodating cavity; 132, first limiting step; 133, second limiting step; 134, connecting hole; 135, fastener; 136, dismounting piece; 137, threaded hole. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] In order to make the person skilled in the art better understand the utility model scheme, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0029] The utility model provides a kind of assembling device of wheel body, both can guarantee the installation distance requirement when wheel body 12 interference fit installation, can prevent motor 11 main shaft 111 from being caused by excessive axial load and leading to motor 11 performance decline or damage, simultaneously can meet the needs of wheel body 12 dismounting, facilitate maintenance and reuse.

[0030] Please refer to Figures 1 to 7The wheel assembly device provided by the present invention includes a base 10 and a disassembly and positioning sleeve 13; the base 10 is used to install the motor 11, and the base 10 is fixed with a limit pin 101, which is used to abut against one end of the main shaft 111 of the motor 11 close to the base 10; an accommodating cavity 131 is provided in the disassembly and positioning sleeve 13, and the accommodating cavity 131 is used to accommodate the wheel body 12, and the accommodating cavity 131 and the inner wall of the disassembly and positioning sleeve 13 form a first limiting step 132, and the first limiting step 132 is used to abut against the end face of the wheel body 12, and a second limiting step 133 is also provided in the disassembly and positioning sleeve 13, and the second limiting step 133 is used to abut against the other end of the main shaft 111 of the motor 11.

[0031] Please refer to Figure 4 and Figure 5 The first stop 132 of the first stop 133 is pressed against the first stop 131 of the first gear 11 and the second stop 132 is pressed against the first stop 131 of the first gear 11. In the process of using the disassembly and assembly positioning sleeve 13 to press the wheel body 12 through the center hole of the wheel body 12 toward the main shaft 111 of the motor 11, it is necessary to apply a downward external force to the disassembly and assembly positioning sleeve 13. The main shaft 111 of the motor 11 will bear an axial load under the action of the external force. The axial load borne by the main shaft 111 of the motor 11 can be offset by the support of the limit pin 101 and the bottom end of the main shaft 111 of the motor 11. The main shaft 111 of the motor 11 will not move up and down, thereby avoiding damage to the motor 11 due to excessive axial load and extending the service life of the motor 11.

[0032] In addition, in this embodiment, the base 10 is generally a box-like structure with one side open, and the motor 11 is a motor 11 with a rectangular cross-section. When the motor 11 is installed on the base 10, the motor 11 is located on the bottom surface of the base 10, and two adjacent side surfaces of the motor 11 respectively abut against two adjacent side surfaces of the base 10. Through this arrangement, the installation position of the motor 11 on the base 10 is determined. If a cylindrical motor 11 is used, the structure of the base 10 needs to be adjusted accordingly to ensure that the motor 11 is positioned properly on the base 10.

[0033] Please refer toFigures 1 to 3 The dismounting positioning sleeve 13 is provided with a plurality of connecting holes 134, and the dismounting positioning sleeve 13 is connected with the wheel body 12 through a fastener 135 which is screwed with the wheel body 12 through the connecting holes 134. When the wheel body 12 is dismounted from the main shaft 111 of the motor 11, the dismounting positioning sleeve 13 is connected with the wheel body 12 through the fastener 135, and the dismounting positioning sleeve 13 is fixedly connected with the wheel body 12 as a whole, and then the wheel body 12 is dismounted from the main shaft 111 of the motor 11 by removing the dismounting positioning sleeve 13. The dismounting positioning sleeve 13 is connected with the wheel body 12 through the fastener 135, and the fastener 135 is screwed with the threaded hole on the wheel body 12 after passing through the connecting holes 134 on the dismounting positioning sleeve 13, so that the connection is fixed and reliable and the mounting and dismounting are convenient.

[0034] Please refer to Figures 1 to 3 The connecting holes 134 are located on the side surface of the dismounting positioning sleeve 13, and the fastener 135 passes through the side surface of the dismounting positioning sleeve 13 into the accommodating cavity 131 to be screwed with the wheel body 12. The connecting holes 134 are arranged on the side surface of the dismounting positioning sleeve 13, so that sufficient operation space is provided for the mounting and dismounting of the fastener 135, the mounting is facilitated, the difficulty of operation is reduced due to the small operation space, and the efficiency of mounting and dismounting is improved.

[0035] Please refer to Figures 1 to 3 In the embodiment, the dismounting positioning sleeve 13 has a cylindrical shape, and the plurality of connecting holes 134 are uniformly distributed along the circumference of the dismounting positioning sleeve 13, and the fastener 135 is arranged in each of the plurality of connecting holes 134, so that the connection between the dismounting positioning sleeve 13 and the wheel body 12 is realized through the plurality of uniformly distributed fasteners 135.

[0036] In this way, the load borne by each fastener 135 for connecting the dismounting positioning sleeve 13 and the wheel body 12 can be relatively uniform, and the situation that some fasteners 135 bear overload while other fasteners 135 do not fully play a role can be avoided, so that the overall connection strength is improved, and the stability and safety of the connection are ensured.

[0037] In the embodiment, the connecting holes 134 are blind holes or threaded holes. When the connecting holes 134 are blind holes, the fastener 135 passes through the blind hole on the side surface of the dismounting positioning sleeve 13 into the accommodating cavity 131 to be screwed with the threaded hole on the wheel body 12. When the connecting holes 134 are threaded holes, the fastener 135 first passes through the threaded hole on the side surface of the dismounting positioning sleeve 13 to be screwed with the dismounting positioning sleeve 13, and then passes into the accommodating cavity 131 to be screwed with the threaded hole on the wheel body 12. The connecting holes 134 can be arranged as blind holes or threaded holes according to actual conditions, and the specific arrangement is not limited.

[0038] Please refer to Figures 1 to 3The disassembly and positioning sleeve 13 is further threadedly connected with a disassembly piece 136, which passes through the top of the disassembly and positioning sleeve 13 and is tightly abutted against the end of the main shaft 111 of the motor 11. The disassembly piece 136 is threadedly connected to the top of the disassembly and positioning sleeve 13, and one end of the disassembly piece 136 passes through the top of the disassembly and positioning sleeve 13, enters the interior of the disassembly and positioning sleeve 13, and is tightly abutted against the end of the main shaft 111 of the motor 11. The disassembly piece 136 can be a screw or a bolt.

[0039] Please refer to Figures 6 to 7 When removing the wheel body 12 from the main shaft 111 of the motor 11, the disassembly piece 136 is threadedly connected to the disassembly and positioning sleeve 13, so that the bottom end of the disassembly piece 136 is tightly pressed against the end of the main shaft 111 of the motor 11, and the disassembly and positioning sleeve 13 is reliably connected to the wheel body 12 through multiple fasteners 135. Then, the disassembly piece 136 is rotated. Since the disassembly piece 136 is threadedly connected to the disassembly and positioning sleeve 13, as the disassembly piece 136 is rotated, the disassembly and positioning sleeve 13 is driven to move upward, and the wheel body 12 moves together with the disassembly and positioning sleeve 13, and finally the wheel body 12 is separated from the main shaft 111 of the motor 11, so that the wheel body 12 and the motor 11 can be maintained after disassembly, thereby achieving the purpose of reuse.

[0040] Please refer to Figures 1 to 3 The top of the disassembly and positioning sleeve 13 is provided with a threaded hole 137, which communicates with the accommodating chamber 131. The disassembly member 136 is threadedly connected to the disassembly and positioning sleeve 13 through the threaded hole 137. When the wheel body 12 is removed from the main shaft 111 of the motor 11, the disassembly member 136 is threadedly connected to the disassembly and positioning sleeve 13 through the threaded hole 137. The bottom end of the disassembly member 136 passes through the threaded hole 137 and abuts against the top end of the main shaft 111 of the motor 11 located inside the disassembly and positioning sleeve 13.

[0041] Please refer to Figures 1 to 3 The base 10 is provided with a mounting hole 102, and a limiting pin 101 is provided in the mounting hole 102. The top end of the limiting pin 101 abuts against the main shaft 111 of the motor 11. The mounting hole 102 is a blind hole. The bottom end of the limiting pin 101 abuts against the bottom of the mounting hole 102, and the top end of the limiting pin 101 abuts against the main shaft 111 of the motor 11. When a downward external force is applied to the disassembly and assembly positioning sleeve 13 and the wheel body 12 is fixed to the main shaft 111 of the motor 11 by an interference fit, the limiting pin 101 can offset the axial load borne by the main shaft 111 of the motor 11, thereby preventing damage to the motor 11 due to excessive axial load.

[0042] In this embodiment, the fastener 135 is a fastening bolt or a fastening screw, which is easily available and can ensure reliable connection.

[0043] The assembling device of the wheel body, when the wheel body 12 is fixed on the main shaft 111 of the motor 11, the motor 11 main shaft 111 is resisted by the second limiting step 133, positioning effect is achieved, the installation depth of the wheel body 12 relative to the motor 11 main shaft 111 can be effectively controlled, and the installation distance of the wheel body 12 on the motor 11 main shaft 111 is guaranteed to meet the requirements. In the process of applying the downward external force to the dismounting positioning sleeve 13, the limiting pin 101 and the bottom end of the motor 11 main shaft 111 are resisted, the axial load borne by the motor 11 main shaft 111 can be offset, so that the motor 11 is prevented from being damaged due to the excessive axial load, and the service life of the motor 11 is prolonged. The wheel body 12 is connected with the dismounting positioning sleeve 13 through the fastener 135, the wheel body 12 can be dismounted from the motor 11 main shaft 111 through the dismounting piece 136, so that the wheel body 12 and the motor 11 can be maintained after being dismounted, the purpose of repeated utilization is achieved, and the dismounting tool such as the shaft puller can be replaced.

[0044] It should be noted that the relative terms, such as first and second, are used herein solely to distinguish one entity from another without necessarily requiring or implying any such actual relationship or order between such entities.

[0045] The principles and implementation modes of the utility model are described by applying specific examples herein, and the above embodiment description is only used for helping to understand the method and core idea of the utility model. It should be pointed out that, for ordinary skilled persons in the technical field, the utility model can be improved and modified in several ways without departing from the principles of the utility model, and these improvements and modifications also fall within the protection scope of the utility model.

Claims

1. A wheel assembly device, characterized in that: include: Base, used to install the motor; A limit pin, fixed to the base, for abutting against an end of the main shaft of the motor close to the base; A disassembly and assembly positioning sleeve is provided with an accommodating cavity therein, the accommodating cavity is used to accommodate the wheel body, the accommodating cavity and the inner wall of the disassembly and assembly positioning sleeve form a first limiting step, the first limiting step is used to abut against the end face of the wheel body, and a second limiting step is also provided in the disassembly and assembly positioning sleeve, the second limiting step is used to abut against the other end of the motor main shaft.

2. The wheel assembly device according to claim 1, characterized in that: The disassembly and assembly positioning sleeve is provided with a plurality of connection holes. The disassembly and assembly positioning sleeve is connected to the wheel body via a fastener. The fastener passes through the connection holes and is threadedly connected to the wheel body.

3. The wheel assembly device according to claim 2, characterized in that: The connecting hole is located on the side of the disassembly and assembly positioning sleeve.

4. The wheel assembly device according to claim 3, characterized in that: The plurality of connection holes are evenly distributed along the circumference of the disassembly and assembly positioning sleeve.

5. The wheel assembly device according to claim 4, characterized in that: The connecting hole is a smooth hole or a threaded hole.

6. The wheel assembly device according to any one of claims 2 to 5, characterized in that: The disassembly and assembly positioning sleeve is further threadedly connected with a disassembly piece, and the disassembly piece passes through the top of the disassembly and assembly positioning sleeve and is tightly pressed against the end of the motor main shaft.

7. The wheel assembly device according to claim 6, characterized in that: A threaded hole is provided on the top of the disassembly and positioning sleeve, the threaded hole is communicated with the accommodating cavity, and the disassembly piece is threadedly connected to the disassembly and positioning sleeve through the threaded hole.

8. The wheel assembly device according to claim 1, characterized in that: The base is provided with a mounting hole, the limiting pin is provided in the mounting hole, and the top end of the limiting pin abuts against the motor main shaft.

9. The wheel assembly device according to claim 2, characterized in that: The fastener is a fastening bolt or a fastening screw.

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