Combined pin puller

Abstract

The utility model discloses a combined type pin puller, which relates to the technical field of pin pullers, and comprises a pin pulling mechanism, a pin pulling mechanism, a pin pulling mechanism and a pin pulling mechanism, and the mounting mechanism is used for mounting the hexagon nut on the guide pipe to prevent the hexagon nut from falling off. The hexagon nut is rotated to drive the screw fixed to the positioning pin to ascend, then the ascending screw drives the positioning pin to ascend to achieve pin pulling, and due to the fact that the hexagon nut is in threaded connection with the screw, the screw which spirally rotates and ascends can provide uniform pulling force for the positioning pin, pin hole damage is avoided, and the service life of the pin is prolonged. Compared with the prior art, the device has the advantages that the service life of the positioning pin is prolonged, the operation is simple, the skill requirement on operators is reduced, the risk in the operation process is reduced, and the device can be used for disassembling and installing the positioning pin and is wide in application range. Meanwhile, the pin puller is formed by assembling a plurality of pin parts, is small in size, light in weight and convenient to carry, store and disassemble, and reduces the production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of pin pulling, in particular to a combined pin puller. Background Technique

[0002] The transmission pin puller is used to pull out the positioning pin in the transmission. However, although the structure of the positioning pin puller is simple, in a high-intensity working environment, the device is easily damaged. After the device components are damaged, the entire device can only be scrapped because they cannot be replaced, resulting in a short service life of the device. Therefore, those skilled in the art have proposed a combined pin puller. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a combined pin puller, which solves the problems in the above background.

[0004] To achieve the above purposes, the utility model is realized through the following technical solutions: A combined pin puller, comprising:

[0005] A pin pulling mechanism for loading and unloading the positioning pin;

[0006] The pin pulling mechanism includes a guide tube. A through hole is opened at the center of the end of the guide tube. A hexagonal nut is arranged at the end of the guide tube where the through hole is opened. A first threaded hole is opened at one end of the hexagonal nut, and a second threaded hole communicating with the first threaded hole is opened at the other end of the hexagonal nut. A screw rod adapted to it is arranged in the first threaded hole;

[0007] An installation mechanism for installing the hexagonal nut on the guide tube to prevent it from falling off.

[0008] As a further technical solution of the utility model, a hexagonal head is installed at one end of the screw rod.

[0009] As a further technical solution of the utility model, two strip-shaped grooves are correspondingly opened on the side surface of the guide tube.

[0010] As a further technical solution of the utility model, the installation mechanism includes a flat pressure bearing arranged between the hexagonal nut and the guide tube, and a fixing nut passing through the flat pressure bearing and the through hole and extending into the guide tube is arranged in the second threaded hole.

[0011] As a further technical solution of the utility model, an external thread adapted to the second threaded hole is opened on the outer surface of the fixing nut, and a round hole adapted to the screw rod is opened at the center of the end of the fixing nut.

[0012] As a further technical solution of the utility model, the other end of the screw rod passes through the round hole and extends into the guide tube, and the screw rod is adapted to the threaded hole in the positioning pin.

[0013] Beneficial effects

[0014] The utility model provides a combined pin puller. Compared with the prior art, it has the following beneficial effects:

[0015] 1. A combined pin puller drives the screw fixed to the positioning pin to rise by rotating the hexagonal nut, and then drives the positioning pin to rise by the rising screw to realize pin pulling. Since the hexagonal nut and the screw are in threaded connection, the screw rising by spiral rotation can provide a uniform pulling force for the positioning pin, avoiding damage to the pin hole, extending the service life of the positioning pin. At the same time, the operation is simple, reducing the skill requirements for operators and also reducing the risks during the operation. At the same time, this device can not only be used for disassembling the positioning pin, but also for installing the positioning pin, with a wide range of applications.

[0016] 2. A combined pin puller. This pin puller is assembled from multiple pin parts, with a small volume and light weight, making it convenient for handling and storage. It is easy to disassemble and assemble, reducing production costs and facilitating popularization and use. Even if a certain part is damaged, it can be replaced, without the need to scrap the entire device, extending the service life of other parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a combined pin puller;

[0018] Figure 2 is a side view of a combined pin puller;

[0019] Figure 3 is a cross-sectional view of the working state of a combined pin puller;

[0020] Figure 4 is a disassembled view of a combined pin puller;

[0021] Figure 5 is a cross-sectional view of the hexagonal nut of a combined pin puller.

[0022] In the figure: 1. Guide tube; 2. Through hole; 3. Hexagonal nut; 4. First threaded hole; 5. Second threaded hole; 6. Screw; 7. Fixed nut; 8. Round hole; 9. External thread; 10. Strip groove; 11. Hexagonal head; 12. Plain pressure bearing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further describes the present disclosure in detail in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant content and do not limit the present disclosure. Additionally, it should be noted that for the sake of description, only the parts related to the present disclosure are shown in the drawings.

[0024] Figure 1 It is a structural schematic diagram of a combined pin extractor;

[0025] Figure 2 It is a side view of a combined pin extractor;

[0026] Figure 3 It is a sectional view of the working state of a combined pin extractor;

[0027] Figure 4 It is a disassembly diagram of a combined pin extractor;

[0028] Figure 5 It is a sectional view of a hexagonal nut of a combined pin extractor;

[0029] As Figures 1-5 shown, a combined pin extractor of the present disclosure may include: a pin extraction mechanism and a mounting mechanism;

[0030] The through hole 2 is opened at the center of the end of the guide tube 1. The hexagonal nut 3 is arranged at the end of the guide tube 1 where the through hole 2 is opened. The first threaded hole 4 is opened at one end of the hexagonal nut 3. The second threaded hole 5 is opened at the other end of the hexagonal nut 3 and communicates with the first threaded hole 4. The screw rod 6 is arranged in the first threaded hole 4 and is adapted to it. Two strip-shaped grooves 10 are opened on the side of the guide tube 1. The hexagonal head 11 is installed at the end of the screw rod 6;

[0031] As Figures 1-5 shown, the pin extraction mechanism includes a guide tube 1, a through hole 2, a hexagonal nut 3, a first threaded hole 4, a second threaded hole 5, a screw rod 6, strip-shaped grooves 10, and a hexagonal head 11;

[0032] As Figures 1-5 shown, it includes a fixing nut 7, a round hole 8, an external thread 9, and a flat pressure bearing 12;

[0033] The fixing nut 7 is arranged in the second threaded hole 5 and extends through the through hole 2 into the guide tube 1. The external thread 9 is opened on the outer surface of the fixing nut 7 and is adapted to the second threaded hole 5. The round hole 8 is opened at the center of the end of the fixing nut 7 and is adapted to the screw rod 6. The flat pressure bearing 12 is arranged between the hexagonal nut 3 and the guide tube 1 and has the same center as the through hole 2. The other end of the screw rod 6 extends through the round hole 8 into the guide tube 1;

[0034] When pulling out the positioning pin, place the device into the positioning pin hole of the transmission, align and release the screw hole at the end of the screw rod 6 and the end of the positioning pin. Then, use a wrench to fix the hexagon nut 3, and another wrench to hold the hexagon head 11. Then, drive the screw rod 6 to rotate through the wrench fixed on the hexagon head 11. The rotating screw rod 6 rotates forward in the direction of the positioning pin through the first threaded hole 4. Since the screw rod 6 is aligned with the screw hole of the positioning pin, the rotating screw rod 6 will slowly screw into the screw hole of the positioning pin to fix the screw rod 6 and the positioning pin. After that, use the wrench on the hexagon head 11 to fix the screw rod 6 to keep it from rotating, and use the wrench on the hexagon nut 3 to reverse the hexagon nut 3. The reversed hexagon nut 3 drives the screw rod 6 to move in the opposite direction of the positioning pin through the first threaded hole 4, thereby driving the positioning pin to be pulled out from the transmission installation hole to realize the disassembly of the positioning pin;

[0035] When installing the positioning pin, just screw the screw rod 6 into the screw hole of the positioning pin through the above operations. Then, place the positioning pin into the installation hole of the gearbox. Then, install the two wrenches on the hexagon head 11 and the hexagon nut 3 respectively. Use the wrench on the hexagon nut 3 to fix the hexagon nut 3. Then, rotate the screw rod 6 through the wrench on the hexagon head 11 to drive the screw rod 6 to move through the first threaded hole 4, driving the positioning pin on the screw rod 6 to be completely inserted into the installation hole. Then, reverse the screw rod 6 to drive the screw rod 6 to screw out from the screw hole of the positioning pin to disconnect the connection between the two. After that, remove the device.

[0036] In the description of this specification, the description with reference to terms such as "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present disclosure, rather than limiting the scope of the present disclosure. For those skilled in the art, other changes or modifications can be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A combined pin extractor, characterized in that, Comprising: A pin pulling mechanism for loading and unloading a positioning pin; The pin pulling mechanism includes a guide tube (1), a through hole (2) is opened at the center of the end of the guide tube (1), a hexagonal nut (3) is arranged at one end of the guide tube (1) where the through hole (2) is opened, a first threaded hole (4) is opened at one end of the hexagonal nut (3), a second threaded hole (5) communicating with the first threaded hole (4) is opened at the other end of the hexagonal nut (3), and a screw rod (6) adapted to it is arranged in the first threaded hole (4); An installation mechanism for installing the hexagonal nut (3) on the guide tube (1) to prevent it from falling off.

2. The combined pin puller according to claim 1, wherein, One end of the screw rod (6) is provided with a hexagonal head (11).

3. The combined pin extractor according to claim 2, characterized in that, Two strip-shaped grooves (10) are correspondingly opened on the side surface of the guide tube (1).

4. The combined pin extractor according to claim 3, wherein The installation mechanism includes a flat pressure bearing (12) arranged between the hexagonal nut (3) and the guide tube (1), and a fixing nut (7) passing through the flat pressure bearing (12) and the through hole (2) and extending into the guide tube (1) is arranged in the second threaded hole (5).

5. The combined pin extractor according to claim 4, characterized in that, External threads (9) adapted to the second threaded hole (5) are opened on the outer surface of the fixing nut (7), and a round hole (8) adapted to the screw rod (6) is opened at the center of the end of the fixing nut (7).

6. The combined pin extractor according to claim 5, characterized in that, The other end of the screw rod (6) passes through the round hole (8) and extends into the guide tube (1), and the screw rod (6) is adapted to the threaded hole in the positioning pin.

Images