A kind of assembly tool for shift fork positioning pin

Abstract

The utility model discloses a shift fork locating pin assembly tool, which relates to the field of engine parts assembly, including a fork shaft, a locating pin and a shift fork, wherein the fork shaft and the shift fork are axially connected, and a locating hole is provided on the outer surface of the shift fork, and the locating hole is adaptively matched with the locating pin. The shift fork locating pin assembly tool also includes a fixing plate and a steel rope assembly, wherein the steel rope assembly is connected to the fixing plate, and the steel rope assembly includes a steel wire rope, a fixing ring and a screw, both ends of the steel wire rope are sleeved with fixing rings, and the external threads of the two fixing rings are connected with screws. The shift fork locating pin assembly tool proposed in the above utility model can assemble a coil spring pin in a small space, and solves the problem of damaging the fork shaft hole of the housing due to knocking the spring pin in the assembly. Compared with the traditional copper hammer knocking assembly method, this product has the advantages of simple operation, time and labor saving, and can adapt to the installation of various locating pins, high flexibility and high reliability.

Description

Technical Field

[0001] The utility model relates to the field of engine parts assembly, in particular to a shift fork locating pin assembly tool. Background Art

[0002] Now the shifting of DCT transmission is mainly realized by the shift fork. In order to ensure the linear motion of the shift fork, the shift fork and the fork shaft are often used together. The two need to be installed together through the interference fit of the locating pin. Since the installation position of the shift fork assembly is different in the speed change, for an open transmission structure, the shift fork and the fork shaft can be assembled into an assembly first, and then assembled to the transmission housing together. This locating pin is not limited by space and can be knocked in by a hand press or a copper hammer. However, when the shift fork assembly is in a relatively closed housing, the assembly space is relatively small, so the shift fork and the fork shaft need to be installed in the transmission first, and then fixed into an assembly by a coil spring pin. In this case, if it is installed by knocking, the fork shaft hole in the transmission plate and the shift fork shaft form a cantilever beam structure, and the fork shaft hole on the housing may be cracked by the knocking dynamic load, causing unnecessary losses. Therefore, it is critical to choose a reasonable assembly tool and assembly method. Utility Model Content

[0003] The main purpose of the utility model is to provide a fork locating pin assembly tool, which can effectively solve the technical problems of the traditional assembly method such as complicated operation, low precision and easy damage to parts, realize the rapid assembly of the engine in production and ensure the assembly quality.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A shift fork locating pin assembly tool comprises a fork shaft, a locating pin and a shift fork, wherein the fork shaft and the shift fork are axially connected, a locating hole is opened on the outer surface of the shift fork, and the locating hole is adaptively matched with the locating pin. The shift fork locating pin assembly tool also comprises a fixing plate and a steel rope assembly, wherein the steel rope assembly is connected to the fixing plate, and the steel rope assembly comprises a steel wire rope, a fixing ring and a screw, both ends of the steel wire rope are sleeved with a fixing ring, and the external threads of the two fixing rings are connected with screws, and the screws penetrate into the interior of the fixing ring and are pressed against the outside of the steel wire rope.

[0006] As a further solution of the utility model, the outer surface of the fixing plate is provided with a plurality of groups of mounting holes, and each group of mounting holes has two symmetrically arranged holes.

[0007] As a further solution of the utility model, a screw is threadedly connected at the center position of the fixing plate.

[0008] As a further solution of the utility model, the end of the screw is configured in a conical shape.

[0009] As a further solution of the utility model, a steel ball is rotatably connected to the tip of the screw.

[0010] As a further solution of the utility model, the outside of the steel wire rope is wrapped with a soft plastic tube.

[0011] As a further solution of the utility model, the inner wall of the mounting hole is provided with a large diameter portion and a small diameter portion, the diameter of the large diameter portion is larger than the diameter of the fixing ring, and the diameter of the small diameter portion is smaller than the fixing ring and larger than the diameter of the wire rope.

[0012] As a further solution of the utility model, a notch is provided at the edge of the mounting hole, and the width of the notch is larger than the wire rope and smaller than the diameter of the fixing ring.

[0013] The beneficial effects of the utility model are as follows:

[0014] The utility model proposes a shift fork locating pin assembly tool, which can assemble a rolled spring pin in a narrow space, and solves the problem that the shell fork shaft hole is damaged by knocking the spring pin in the assembly. Compared with the traditional copper hammer knocking assembly method, the product has the advantages of simple operation, time saving and labor saving. At the same time, the device can adapt to the installation of various locating pins, and has the advantages of high flexibility and high reliability. The length of the wire rope can be flexibly adjusted through the fixing ring and the screw, and the locating pin can be installed in different situations. Different wire rope installation holes are set on the fixing plate, and the flexibility meets various part structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are only used to illustrate specific embodiments and are not considered to be limitations of the present invention. In the entire drawings, the same reference symbols represent the same components. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of a fork locating pin assembly tool provided by the utility model;

[0017] Figure 2 A disassembled diagram of a steel wire rope and a fixing ring of a shift fork positioning pin assembly tool provided by the utility model;

[0018] In the figure: 1. fork shaft; 2. positioning pin; 3. shift fork; 4. wire rope; 5. screw; 6. fixing plate; 7. fixing ring; 8. screw. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] like Figure 1-Figure 2 As shown, a shift fork locating pin assembly tool includes a fork shaft 1, a locating pin 2 and a shift fork 3. The fork shaft 1 and the shift fork 3 are axially connected. A locating hole is opened on the outer surface of the shift fork 3, and the locating hole is adaptively matched with the locating pin 2. The shift fork locating pin assembly tool also includes a fixing plate 6 and a steel rope assembly. The steel rope assembly is connected to the fixing plate 6, and the steel rope assembly includes a steel wire rope 4, a fixing ring 7 and a screw 8. Both ends of the steel wire rope 4 are sleeved with a fixing ring 7, and the external threads of the two fixing rings 7 are connected with screws 8. The screws 8 penetrate into the interior of the fixing ring 7 and are pressed against the outside of the steel wire rope 4.

[0021] In this embodiment, the outer surface of the fixing plate 6 is provided with a plurality of groups of mounting holes, and each group of mounting holes has two symmetrically arranged holes;

[0022] The fixing plate 6 has multiple groups of wire rope installation holes, which can be flexibly selected according to actual conditions.

[0023] In this embodiment, a screw rod 5 is threadedly connected to the center of the fixing plate 6;

[0024] The screw rod 5 is used to push the positioning pin 2 to move so that the positioning pin 2 is connected to the positioning hole.

[0025] In this embodiment, the end of the screw 5 is set in a conical shape;

[0026] The conical setting can better cooperate with the positioning pin 2.

[0027] In this embodiment, the tip of the screw 5 is rotatably connected with a steel ball;

[0028] The steel ball can reduce the friction with the positioning pin 2 and also avoid scratching the positioning pin 2 .

[0029] In this embodiment, the outside of the steel wire rope 4 is wrapped with a soft plastic tube;

[0030] The outer ring of the steel wire rope 4 is plastic coated, which can effectively reduce the damage of the steel wire rope 4 to the fork shaft 1.

[0031] In this embodiment, the inner wall of the mounting hole is provided with a large diameter portion and a small diameter portion, the diameter of the large diameter portion is larger than the diameter of the fixing ring 7, and the diameter of the small diameter portion is smaller than the fixing ring 7 and larger than the diameter of the wire rope 4;

[0032] The interface between the small diameter portion and the large diameter portion can be used to clamp the fixing ring 7, so that the fixing ring 7 can be fixed by simply placing it in the mounting hole, which makes the operation simpler.

[0033] In this embodiment, a notch is provided at the edge of the mounting hole, and the width of the notch is larger than the wire rope 4 and smaller than the diameter of the fixing ring 7;

[0034] The steel wire rope 4 passes through the notch and enters the installation hole, and then the fixing ring 7 is limited in the installation hole, which is easy to operate.

[0035] It should be noted that the utility model is a shift fork locating pin assembly tool. Through the cooperation between the plastic-coated steel wire rope 4, the fixing plate 6 and the screw rod 5, the shift fork 3, the fork shaft 1 and the locating pin 2 become a single system. When in use, the shift fork 3 and the fork shaft 1 are assembled into the transmission housing. According to the width of the shift fork 3, one end of the two steel wire ropes 4 is fixed on the fixing plate 7, and the other end is passed around the fork shaft 1 and fixed at the corresponding position of the fixing plate 7. When working, the locating hole and the locating pin 2 are interference fit in the normal state. The locating pin 2 is placed in the locating hole, and the screw rod 5 is aligned with the locating pin 2. When the screw rod 5 is screwed downward, the fork shaft 1 and the fixing plate 6 generate an axial force so that the plastic-coated steel wire rope 4 处于拉紧状态 。 The locating pin 2 is assembled to the corresponding position by screwing in the screw rod 5 to generate the axial force of the locating pin 2. This device can eliminate the force generated on the housing fork shaft 1 when installing the locating pin 2, effectively avoiding the problem of cracking of the middle plate and improving the assembly efficiency.

[0036] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A shift fork locating pin assembly tool, comprising a fork shaft (1), a locating pin (2) and a shift fork (3), wherein the fork shaft (1) and the shift fork (3) are axially connected, and a locating hole is provided on the outer surface of the shift fork (3), and the locating hole is adaptively matched with the locating pin (2), and is characterized in that: The fork locating pin assembly tool also includes a fixing plate (6) and a steel rope assembly, wherein the steel rope assembly is connected to the fixing plate (6), and the steel rope assembly includes a steel wire rope (4), a fixing ring (7) and a screw (8), wherein both ends of the steel wire rope (4) are sleeved with a fixing ring (7), and the external threads of the two fixing rings (7) are connected with the screws (8), and the screws (8) penetrate into the interior of the fixing ring (7) and are pressed against the outside of the steel wire rope (4).

2. The fork positioning pin assembly tool according to claim 1, characterized in that: The outer surface of the fixing plate (6) is provided with a plurality of groups of mounting holes, and each group of mounting holes has two symmetrically arranged holes.

3. The fork locating pin assembly tool according to claim 1, characterized in that: A screw rod (5) is threadedly connected at the center of the fixing plate (6).

4. The fork positioning pin assembly tool according to claim 3, characterized in that: The end of the screw (5) is arranged in a conical shape.

5. The fork locating pin assembly tool according to claim 3, characterized in that: The tip of the screw rod (5) is rotatably connected with a steel ball.

6. The fork locating pin assembly tool according to claim 1, characterized in that: The steel wire rope (4) is wrapped with a soft plastic tube on the outside.

7. The fork locating pin assembly tool according to claim 2, characterized in that: The inner wall of the mounting hole is provided with a large diameter portion and a small diameter portion, the diameter of the large diameter portion is larger than the diameter of the fixing ring (7), and the diameter of the small diameter portion is smaller than the fixing ring (7) and larger than the diameter of the wire rope (4).

8. The fork locating pin assembly tool according to claim 7, characterized in that: A notch is provided at the edge of the mounting hole, and the width of the notch is larger than the steel wire rope (4) and smaller than the diameter of the fixing ring (7).

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