Rapid clamping tool for gear pair of speed reducer of new energy automobile

Abstract

The utility model relates to a new energy automobile speed reducer gear pair rapid clamping tool which comprises a first clamping assembly and a second clamping assembly which are used for positioning a first gear shaft and a second gear shaft respectively, and the first clamping assembly comprises two tips arranged at the two ends of the first gear shaft. The first clamping assembly comprises two tips arranged at the two ends of a second gear shaft, one tip is connected with one end of the first gear shaft through a spline, the second clamping assembly comprises two tips arranged at the two ends of the second gear shaft, one tip is provided with a first connecting part, one end of the second gear shaft is provided with a second connecting part, and the first connecting part is connected with the second connecting part through a spline. According to the rapid clamping tool for the gear pair of the speed reducer of the new energy automobile, a double-tip structure is adopted for positioning the gear pair, torque transmission is conducted through spline connection, and performance testing can be conveniently conducted on a gear.

Description

Technical Field

[0001] The utility model relates to the technical field of gear clamping and positioning, and in particular to a new energy vehicle reducer gear pair quick clamping tool. Background Art

[0002] Currently, the common reducer structure includes an input shaft (i.e., the first gear shaft), an output shaft (i.e., the second gear shaft), and an input gear and an output gear respectively arranged on the output shaft and the output shaft. They transmit in sequence to complete the reduction action. The input gear and the output gear mesh with each other to form a pair of gear pairs. Before installing the gear pair on the reducer, its performance needs to be measured. During the measurement, the input gear and the output gear need to be positioned by a clamping tool, that is, the input shaft and the output shaft need to be positioned.

[0003] Normally, the input shaft has a spline structure inside, while the output shaft does not. Spline connection is a mechanical connection method that is widely used in situations where torque or axial force needs to be transmitted, especially in equipment that requires higher precision, reliability and load-bearing capacity. The spline connection transmits torque through the tooth matching on the shaft and hub (or shaft and shaft). Compared with traditional key connections such as flat keys or wedge keys, it provides a more uniform contact surface, higher strength and better concentricity. In order to better transmit torque and facilitate testing of the performance of the gear pair, it is necessary to pre-install a structure with a spline on the output shaft to position it and transmit torque well. Utility Model Content

[0004] The technical problem to be solved by the utility model is that, in view of the above-mentioned defects, a quick clamping tool for a gear pair of a new energy vehicle reducer is provided, which adopts a double-center structure to position the gear pair and transmits torque through a spline connection, thereby facilitating performance testing of the gear.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a new energy vehicle reducer gear pair quick clamping tool, including a first clamping assembly and a second clamping assembly for positioning a first gear shaft and a second gear shaft respectively, the first clamping assembly including two tops arranged at both ends of the first gear shaft, one of which is connected to one end of the first gear shaft through a spline, the second clamping assembly including two tops arranged at both ends of the second gear shaft, one of which is provided with a first connecting part, and one end of the second gear shaft is provided with a second connecting part, and the first connecting part is connected to the second connecting part through a spline.

[0006] Compared with the prior art, the beneficial effects of the present solution are as follows: the input gear and the output gear are respectively arranged on the first gear shaft and the second gear shaft, and the two ends of the first gear shaft and the second gear shaft are respectively positioned by the two tops in the first clamping assembly and the second clamping assembly, and the first gear shaft is connected to one of the tops through a spline, and the top can transmit torque while positioning the first gear shaft; the second gear shaft and one of the tops are respectively pre-installed with a first connecting part and a second connecting part that can be connected by a spline, and the second gear shaft is positioned by the top and the torque is transmitted through the first connecting part and the second connecting part. The new energy vehicle reducer gear pair quick clamping tool can stably position the gear pair while transmitting torque through the spline connection, thereby facilitating performance testing of the gear.

[0007] As a preferred embodiment of the utility model, both ends of the first gear shaft are provided with first positioning holes along the axial direction for cooperating with two centers respectively, and a first internal spline is provided in one of the first positioning holes. The first clamping assembly includes a first center and a second center, and a first external spline for connecting with the first internal spline is provided on the outer circumference of the first center.

[0008] The beneficial effects of this solution are as follows: when clamping the first gear shaft, the first center point and the second center point are first inserted into the first positioning holes at both ends of the first gear shaft respectively, wherein the first positioning hole connected to the first center point is provided with a first internal spline inside, and the outer circumference of the first center point is provided with a first external spline, and when the first center point is inserted into the first positioning hole, the first external spline is connected to the first internal spline, and while the first gear shaft is double-centered by the first center point and the second center point, torque can be transmitted by connecting the first external spline and the first internal spline, so that the performance of the gear pair can be measured more accurately.

[0009] As a preferred embodiment of the utility model, both ends of the second gear shaft are provided with second positioning holes along its axial direction, the second clamping assembly includes a third top and a fourth top, the first connecting part is located on the third top, a second internal spline is provided in the first connecting part, the second connecting part is located at one end of the second gear shaft, and a second external spline for connecting to the second internal spline is provided on the outer circumference of the second connecting part.

[0010] The beneficial effects of this solution are as follows: the second gear shaft connected to the output gear is not provided with a spline structure. The second connecting portion provided with a second external spline is connected to the second gear shaft, and the first connecting portion provided with a second internal spline is connected to the third center. While the second gear shaft is double-centered by the third center and the fourth center, the first connecting portion can also be connected to the second connecting portion, that is, the second internal spline is connected to the second external spline, so as to facilitate the transmission of torque.

[0011] As a preferred embodiment of the utility model, the first connecting part is detachably connected to the third top, the first connecting part includes a connecting sleeve, the connecting sleeve is provided with a first through hole for the third top to pass through along its axial direction and a plurality of first connecting holes arranged at intervals along its axial direction, the third top is provided with a flange, the flange is symmetrically provided with a plurality of second connecting holes corresponding to the positions of the first connecting holes along its circumferential direction, and the connecting sleeve is fixed to the flange by passing a locking piece through the first connecting hole and the second connecting hole.

[0012] The beneficial effects of this solution are as follows: before using the third center pin to position the second gear shaft, the connecting sleeve is pre-installed on the third center pin through the first through hole arranged thereon, so that one side of the connecting sleeve abuts against the inner side of the flange on the third center pin, and the first connecting hole is aligned with the second connecting hole on the flange, and the connecting sleeve is fixed to the flange by passing the locking piece through the first connecting hole and the second connecting hole. The connecting sleeve is detachably connected to the third center pin, which is convenient for installation and disassembly of the connecting sleeve, and can ensure the cooperation between the first connecting part and the second connecting part when positioning the second gear shaft by the third center pin, thereby better transmitting torque.

[0013] As a preferred embodiment of the present invention, the second connecting part is detachably connected to the second gear shaft, and the second connecting part includes a first connecting block and a second connecting block, the first connecting block is cylindrical, and the first connecting block is provided with a second through hole matching the second gear shaft along its axial direction, a second external spline is provided on the outer circumference of one end of the first connecting block, and an arc-shaped notch is provided at the other end of the first connecting block, and the second connecting block is an arc-shaped block matching the shape of the notch, and the first connecting block and the second connecting block are respectively provided with a first fixing hole and a second fixing hole corresponding in position, and when the first connecting block and the second connecting block clamp the second gear shaft, the first connecting block and the second connecting block are fixed to the second gear shaft by a locking member passing through the first fixing hole and the second fixing hole.

[0014] The beneficial effects of this solution are as follows: before using the second clamping assembly to position the second gear shaft, the first connecting block is pre-installed on the second gear shaft through the second through hole set thereon, and the first connecting block is provided with an end of the second external spline set close to the connecting sleeve, and then the second connecting block is placed in the notch of the first connecting block so that it is enclosed into a cylinder and clamps the second gear shaft, and then the first fixing hole is aligned with the second fixing hole, and the first connecting block and the second connecting block are fixed together by a locking piece passing through the first fixing hole and the second fixing hole, so that the second external spline is detachably connected to the second gear shaft, and when the second gear shaft is positioned by the second clamping assembly, the cooperation between the first connecting part and the second connecting part is ensured, the torque is better transmitted, and the stability of the connection is ensured, and it is not easy to slip. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of an embodiment of a quick clamping tooling for a gear pair of a reducer for a new energy vehicle according to the utility model.

[0016] Figure 2 It is a schematic structural diagram of the first clamping assembly.

[0017] Figure 3 It is a schematic structural diagram of the first gear shaft.

[0018] Figure 4 It is a schematic structural diagram of the second clamping assembly.

[0019] Figure 5 It is a schematic structural diagram of the second gear shaft and the first connecting part.

[0020] Figure 6 It is a structural schematic diagram of the second connecting part.

[0021] Figure 7 This is a schematic diagram of the third top structure. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described below are only used to explain the present invention and will not limit the protection scope of the present invention.

[0023] The terms "first", "second" and the like in the specification, claims and embodiments of the present application are used to distinguish similar objects rather than to describe a specific order or sequential sequence.

[0024] The present invention is further described in detail below through preferred specific embodiments:

[0025] The reference numerals in the drawings of the specification include:

[0026] The first gear shaft 1, the first positioning hole 101, the first internal spline 102,

[0027] The second gear shaft 2, the second positioning hole 201,

[0028] The first clamping assembly 3, the first center 301, the second center 302, the first external spline 303,

[0029] The second clamping assembly 4, the third center 401, the boss 4011, the second connecting hole 4012, the fourth center 402,

[0030] Connecting sleeve 5, second internal spline 501, first through hole 502, first connecting hole 503,

[0031] The first connecting block 6, the first fixing hole 601, the second external spline 602, the second through hole 603,

[0032] The second connecting block 7 , the second fixing hole 701 , the input gear 8 , and the output gear 9 .

[0033] As attached Figure 1 As shown: A new energy vehicle reducer gear pair quick clamping tooling of this embodiment includes a first clamping assembly 3 and a second clamping assembly 4 for positioning a first gear shaft 1 and a second gear shaft 2, respectively, and an input gear 8 and an output gear 9 are respectively provided on the first gear shaft 1 and the second gear shaft 2.

[0034] As attached Figure 2 and attached Figure 3 As shown: both ends of the first gear shaft 1 are provided with first positioning holes 101 along the axial direction for cooperating with two centers respectively, one of the first positioning holes 101 is provided with a first internal spline 102, the first clamping assembly 3 includes a first center 301 and a second center 302 arranged at both ends of the first gear shaft 1, and a first external spline 303 for connecting with the first internal spline 102 is provided on the outer circumference of the first center 301.

[0035] As attached Figure 4 , Attachment Figure 5 and attached Figure 7 As shown: both ends of the second gear shaft 2 are provided with second positioning holes 201 along the axial direction thereof, the second clamping assembly 4 includes a third top point 401 and a fourth top point 402, the third top point 401 is provided with a flange, and the flange is symmetrically provided with a plurality of second connecting holes 4012 along its circumference, preferably six of which are provided in this embodiment. In this embodiment, the front end of the fourth top point 402 is conical, which serves to limit the second gear shaft 2.

[0036] As attached Figure 6 and attached Figure 7 As shown: the first connecting part is detachably connected to the third top point 401, the first connecting part includes a connecting sleeve 5, a second internal spline 501 is provided in the connecting sleeve 5, a first through hole 502 for the third top point 401 to pass through is provided on the connecting sleeve 5 along its axial direction, and a plurality of first connecting holes 503 corresponding to the positions of the second connecting holes 4012 are arranged at intervals along its axial direction. In this embodiment, six first connecting holes are preferably provided, and the connecting sleeve 5 is fixed to the flange by passing a locking member through the first connecting hole 503 and the second connecting hole 4012. In this embodiment, the locking member is preferably a bolt.

[0037] As attached Figure 5As shown: the second connecting part is detachably connected to the second gear shaft 2, and a second external spline 602 for connecting to the second internal spline 501 is provided on the outer circumference of the second connecting part, and the second connecting part includes a first connecting block 6 and a second connecting block 7, the first connecting block 6 is cylindrical, and a second through hole 603 matching the second gear shaft 2 is provided on the first connecting block 6 along its axial direction, a second external spline 602 is provided on the outer circumference of one end of the first connecting block 6, and an arc-shaped notch is provided at the other end of the first connecting block 6, and the second connecting block 7 is an arc-shaped block matching the shape of the notch, and the first connecting block 6 and the second connecting block 7 are respectively provided with a first fixing hole 601 and a second fixing hole 701 corresponding in position, and when the first connecting block 6 and the second connecting block 7 clamp the second gear shaft 2, the first connecting block 6 and the second connecting block 7 are fixed to the second gear shaft 2 by a locking member passing through the first fixing hole 601 and the second fixing hole 701. In this embodiment, the locking member is preferably a screw.

[0038] The preferred implementation mode of the present application is described in detail above in conjunction with the accompanying drawings. The typical known structures and common knowledge technologies in the preferred implementation mode are not described in detail here. Ordinary technicians in the relevant field can improve and implement the technical solution of the utility model based on their own abilities under the inspiration given by the present implementation mode. Some typical known structures, known methods or common knowledge technologies should not become obstacles for ordinary technicians in the relevant field to implement the present application.

[0039] The scope of protection required by this application shall be based on the contents of its claims, and the contents of the utility model, specific implementation methods and the contents recorded in the drawings of the specification shall be used to interpret the claims.

[0040] Within the technical concept of the present application, several modifications may be made to the specific implementation methods of the present application, and these modified specific implementation methods should also be regarded as within the protection scope of the present application.

Claims

1. A new energy vehicle reducer gear pair quick clamping tool, characterized by: It includes a first clamping assembly and a second clamping assembly for positioning the first gear shaft and the second gear shaft respectively, the first clamping assembly includes two points arranged at both ends of the first gear shaft, one of which is connected to one end of the first gear shaft through a spline, the second clamping assembly includes two points arranged at both ends of the second gear shaft, one of which is provided with a first connecting part, and one end of the second gear shaft is provided with a second connecting part, and the first connecting part and the second connecting part are connected through a spline.

2. The new energy vehicle reducer gear pair quick clamping fixture according to claim 1 is characterized in that: Both ends of the first gear shaft are provided with first positioning holes along the axial direction for cooperating with two centers respectively, and a first internal spline is provided in one of the first positioning holes. The first clamping assembly includes a first center and a second center, and a first external spline is provided on the outer circumference of the first center for connecting with the first internal spline.

3. The new energy vehicle reducer gear pair quick clamping fixture according to claim 1 is characterized in that: Both ends of the second gear shaft are provided with second positioning holes along the axial direction thereof, the second clamping assembly includes a third top and a fourth top, the first connecting part is located on the third top, a second internal spline is provided in the first connecting part, the second connecting part is located at one end of the second gear shaft, and a second external spline for connecting to the second internal spline is provided on the outer circumference of the second connecting part.

4. The new energy vehicle reducer gear pair quick clamping fixture according to claim 3 is characterized in that: The first connecting part is detachably connected to the third top, and the first connecting part includes a connecting sleeve, on which a first through hole for the third top to pass through and a plurality of first connecting holes spaced along the axial direction are provided along the axial direction thereof, and a flange is provided on the third top, and a plurality of second connecting holes corresponding to the positions of the first connecting holes are symmetrically provided along the circumference thereof on the flange, and the connecting sleeve is fixed to the flange by passing a locking piece through the first connecting hole and the second connecting hole.

5. The new energy vehicle reducer gear pair quick clamping fixture according to claim 3 is characterized in that: The second connecting part is detachably connected to the second gear shaft, and the second connecting part includes a first connecting block and a second connecting block. The first connecting block is cylindrical, and a second through hole matching the second gear shaft is provided on the first connecting block along its axial direction. A second external spline is provided on the outer circumference of one end of the first connecting block, and an arc-shaped notch is provided on the other end of the first connecting block. The second connecting block is an arc-shaped block matching the shape of the notch. The first connecting block and the second connecting block are respectively provided with a first fixing hole and a second fixing hole corresponding to the position. When the first connecting block and the second connecting block clamp the second gear shaft, a locking member is passed through the first fixing hole and the second fixing hole to fix the first connecting block and the second connecting block to the second gear shaft.

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