Differential case quick mounting and demounting tool

Abstract

The utility model belongs to the field of tooling for differential mechanism, propose a kind of differential mechanism shell quick assembly and disassembly tooling, including lever and tooth disc, the end surface of tooth disc is provided with multiple round array distribution's pawl, and the other end surface of tooth disc is provided with hollow's multi-prism, the outside of multi-prism is provided with the braking plate nested with it, and the center of braking plate is provided with polygonal hole, and at least two pairs of positioning holes are provided on braking plate, and one pair of positioning holes is provided with braking bolt in diagonal distribution, and one side of braking plate is provided with a pair of connecting pipes, and one connecting pipe is provided with connecting rod mechanism, and the tail end of connecting rod mechanism is matched with pin hole arranged on another connecting pipe, and lever is inserted with two connecting pipes and lever is provided with insertion hole corresponding with pin hole. The utility model has the advantages of reasonable design, quick combination, multiple disassembly nodes, convenient overall planning, strong practicality and large-scale promotion.

Description

Technical Field

[0001] This utility model belongs to the field of differential tooling, and in particular relates to a tooling for quick loading and unloading of differential housing. Background Technology

[0002] The differential is a key component in automobiles and other motor vehicles used to adjust the difference in the speed of the drive wheels. It allows the wheels on both sides to rotate at different speeds when the vehicle is turning or driving on uneven surfaces, ensuring smooth driving. In most automobiles, the final drive and differential are usually integrated into the same housing, such as in the rear axle. The final drive's drive gear is connected to the transmission output shaft, receiving power and driving the driven gear through meshing. The driven gear is fixed to the differential housing and rigidly connected to it by bolts. When the driven gear rotates, it directly drives the differential housing to rotate, thereby driving the planetary gears, half-shaft gears, and other components inside the differential. Therefore, when disassembling the differential, the connection between the final drive's drive gear and the transmission output shaft is usually disconnected first, the half-shafts are removed, the rear axle is opened, and then the differential housing, along with the planetary gears and bearings, is removed using a lifting tool.

[0003] Since each disassembly and assembly of the differential housing requires ensuring that the differential clearance meets the requirements and replacing the main reducer drive shaft bushing, the tools used for these two operations are independent and not convenient for unified use and standardized placement, especially when there are many different tool specifications. For example, the adjustment clearance nut for the axial position of the bevel gear has an internal gear structure, and adjustment requires a hand lever with a toothed sprocket. When replacing the drive shaft bushing, it is necessary to ensure that the external connector and the internal nut do not rotate synchronously, otherwise the nut will not be tightened. Therefore, a two-axis chuck is generally used for manual positioning to allow the nut and the drive shaft connector to generate relative movement to tighten the nut. Utility Model Content

[0004] This utility model addresses the technical problems existing in the disassembly of differential housings mentioned above by proposing a reasonably designed quick-disassembly tooling for differential housings that can be used at multiple disassembly and assembly points and is easy to coordinate.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: The differential housing quick-release fixture provided by this utility model includes a lever and a crank. One end face of the crank is provided with a plurality of teeth arranged in a circular array. The other end face of the crank is provided with a hollow polygonal prism. A brake plate is provided on the outer side of the polygonal prism and nested therewith. A polygonal hole is provided in the center of the brake plate. At least two pairs of positioning holes are provided on the brake plate. Brake bolts are provided in a diagonally distributed manner in one pair of positioning holes. A pair of connecting pipes are provided on one side of the brake plate. A linkage mechanism is provided on one of the connecting pipes. The end of the linkage mechanism engages with a pin hole provided on the other connecting pipe. The lever is inserted into the two connecting pipes and has a insertion hole corresponding to the pin hole.

[0006] Preferably, the linkage mechanism includes a hinge support fixedly connected to the connecting pipe, a pressure handle rotatably disposed on the hinge support, a sliding hole disposed on the pressure handle, a sliding shaft disposed in the sliding hole, and the sliding shaft disposed on a positioning pin, the positioning pin being used to cooperate with a pin hole and a insertion hole.

[0007] Preferably, the center of the connecting tube used to connect the hinge support is a blind hole, and the center of the other connecting tube is a through hole. The lever is a circular tube structure and is inserted into the two connecting tubes at the front and back.

[0008] Preferably, one end face of the toothed plate is provided with two limiting posts distributed on both sides of the polygonal prism.

[0009] Preferably, the limiting post has a key-shaped structure and its length direction is perpendicular to the side of the polygonal prism, and the side of the limiting post is provided with a key-shaped hole.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows: The differential housing quick-release fixture provided by this utility model can form two different sets of tools by using levers, brake plates, and cranks. These tools can be used to adjust the clearance nut and brake the drive shaft connector, ensuring that the nuts and bushings inside the drive shaft connector can be tightened quickly. This utility model is rationally designed, can be quickly assembled, can be used at multiple disassembly and assembly points, and is easy to coordinate, making it highly practical and suitable for large-scale promotion. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1A perspective view of the quick-release fixture for the differential housing provided in the embodiment; Figure 2 A perspective view of the differential housing quick-release fixture provided in the embodiment from another direction; Figure 3 A front view of the differential housing quick-release fixture (without a toothed disc) provided in the embodiment; Figure 4 A perspective view of the differential housing quick-release fixture (without a toothed disc) provided for the embodiment; Figure 5 A perspective view of the toothed disc provided for an embodiment; In the above figures: 1. Lever; 2. Crankset; 21. Gear; 22. Polygonal prism; 23. Limiting pin; 24. Keyhole; 3. Brake plate; 31. Polygonal hole; 32. Positioning hole; 33. Connecting pipe; 34. Pin hole; 4. Brake bolt; 5. Linkage mechanism; 51. Hinge support; 52. Pressure handle; 53. Sliding hole; 54. Sliding shaft; 55. Positioning pin. Detailed Implementation

[0013] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0014] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0015] Examples, such as Figures 1-5As shown, the quick-release fixture for differential housing provided by this utility model includes a lever 1 and a chainring 2. One end face of the chainring 2 is provided with multiple circularly arrayed teeth 21. The other end face of the chainring 2 is provided with a hollow polygonal prism 22. A brake plate 3, nested and fitted with the polygonal prism 22, is provided on the outer side of the prism 22. A polygonal hole 31 is provided at the center of the brake plate 3. The brake plate 3 is provided with at least two pairs of positioning holes 32. One pair of positioning holes 32 contains diagonally distributed brake bolts 4. The brake bolts 4 are positioned in the positioning holes 32 by nuts and bolt heads. Their threaded sections protrude from the brake plate 3 for insertion into the connection hole of the drive shaft connector. A pair of connecting pipes 33 are provided on one side of the brake plate 3. One connecting pipe 33 is provided with a linkage mechanism 5. The end of the linkage mechanism 5 engages with a pin hole 34 on the other connecting pipe 33. The lever 1 is inserted into the two connecting pipes 33, and the lever 1 is provided with an insertion hole corresponding to the pin hole 34.

[0016] Specifically, lever 1 is the main lever arm structure. By using lever 1, brake plate 3 and crank 2, two different tools can be formed. For example, after lever 1 and brake plate 3 are combined, brake bolt 4 has a brake node in the diagonal direction on brake plate 3, which can be quickly inserted into the two screw holes at the end of the drive shaft connector. Hold lever 1 in one hand and power tool for tightening nuts in the other hand. The side of lever 1 held can swing slightly with the tightening action of power tool, which can fully ensure that the nuts and bushings inside the drive connector can be quickly tightened onto the drive shaft. Insert the polygonal prism 22 of crank 2 into the polygonal hole 31 of brake plate 3, and make the face of the retaining tooth 21 face away from the face of brake bolt 4. Align the retaining tooth 21 with the inner teeth of the adjusting gap nut. By rotating lever 1, the adjusting gap nut can be adjusted until the adjustment is completed. The specifications of brake pad 3 and crank 2 can be selected according to the specific vehicle. Unused brake pad 3 and crank 2 can be placed in a standardized manner without any extra rod structures affecting placement. The space occupied is reasonable, and they can be quickly combined. After combination, they can be used for multiple disassembly and assembly nodes, with good overall use effect, strong practicality, and high utilization rate.

[0017] In this device, the linkage mechanism 5 can quickly assemble the brake plate 3 and the lever 1. The linkage mechanism 5 includes a hinge support 51 fixedly connected to the connecting pipe 33. A pressure handle 52 is rotatably provided on the hinge support 51. A sliding hole 53 is provided on the pressure handle 52. A sliding shaft 54 ​​is provided in the sliding hole 53. The sliding shaft 54 ​​is provided on the positioning pin 55. The positioning pin 55 is used to cooperate with the pin hole 34 and the insertion hole. By rotating the pressure handle 52 around the hinge center of the hinge support 51, the pressure handle 52 carries the positioning pin 55 and moves it towards another connecting pipe 33. Adjusting the relative angle between the positioning pin 55 and the pressure handle 52 allows the positioning pin 55 to be properly inserted into the pin hole 34 and the insertion hole. The positioning pin 55 is interference-fitted with the pin hole 34 and the insertion hole, so the lever 1 and the brake plate 3 can be quickly assembled. By applying external force to the pressure handle 52, the sliding shaft 54 ​​can be moved along the sliding hole 53. During the movement, a reverse pulling force is provided to the positioning pin 55 until the positioning pin 55 is separated from the pin hole 34 and the insertion hole, thus releasing the connection between the brake plate 3 and the lever 1, making it convenient to replace the brake plate 3 of the required specifications.

[0018] To improve the reliability of the connection between lever 1 and linkage mechanism 5, the connecting pipe 33 for connecting hinge support 51 is a blind hole at its center, and the other connecting pipe 33 is a through hole at its center. The lever 1 is a round tube structure and is inserted into the two connecting pipes 33 at the front and rear. In this way, after the positioning pin 55 is inserted into the connecting pipe 33 and lever 1, one end of the connecting pipe 33 provides an axial limiting node for lever 1. Hinge support 51, pressure handle 52, positioning pin 55 and lever 1 form a complete lever 1 mechanism, and the reliability at multiple nodes is good, which can meet the needs of disassembling and assembling differential housing.

[0019] In order to improve the adjustment performance of the adjustment clearance nut, the crank 2 provided by this utility model is provided with two limiting posts 23 distributed on both sides of the polygonal prism 22 on one end face. The limiting posts 23 can make a certain distance between the crank 2 and the brake plate 3, so as to expose a sufficient observation angle and ensure that the axial position of the adjustment clearance nut is adjusted in place.

[0020] like Figure 2 and Figure 5 As shown, the limiting post 23 provided by this utility model has a key-shaped structure and its length direction is perpendicular to the side of the polygonal prism 22. The side of the limiting post 23 is provided with a key-shaped hole 24. The key-shaped hole 24 can reduce weight on the one hand, and since the toothed plate 2 is relatively heavy, the key-shaped hole 24 makes it easy to use a hook to pick up and put down the toothed plate 2.

[0021] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A quick-release fixture for a differential housing, comprising a lever and a chainring, wherein one end face of the chainring has a plurality of teeth arranged in a circular array, characterized in that, A hollow polygonal prism is provided on the other end face of the crankset. A brake plate is provided on the outer side of the polygonal prism and nested therewith. A polygonal hole is provided in the center of the brake plate. At least two pairs of positioning holes are provided on the brake plate. Brake bolts are provided in a diagonally distributed pair of positioning holes. A pair of connecting tubes are provided on one side of the brake plate. A linkage mechanism is provided on one of the connecting tubes. The end of the linkage mechanism is engaged with a pin hole provided on the other connecting tube. The lever is inserted into the two connecting tubes and has a hole corresponding to the pin hole.

2. The quick-release fixture for differential housing according to claim 1, characterized in that, The linkage mechanism includes a hinge support fixedly connected to the connecting pipe, a pressure handle rotatably mounted on the hinge support, a sliding hole on the pressure handle, a sliding shaft in the sliding hole, and a positioning pin mounted on a positioning pin for engaging with a pin hole and a insertion hole.

3. The quick-release fixture for differential housing according to claim 2, characterized in that, The center of the connecting tube used to connect the hinge support is a blind hole, and the center of the other connecting tube is a through hole. The lever is a round tube structure and is inserted into the two connecting tubes at the front and back.

4. The quick-release fixture for differential housing according to claim 3, characterized in that, The toothed plate has two limiting posts distributed on both sides of the polygonal prism on one end face.

5. The quick-release fixture for differential housing according to claim 4, characterized in that, The limiting post has a key-shaped structure and its length direction is perpendicular to the side of the polygonal prism. The side of the limiting post is provided with a key-shaped hole.

Images