Puller device

Abstract

The utility model discloses a puller device, and belongs to the technical field of disassembly and assembly of mechanical parts. The puller device mainly comprises a pushing mechanism, a stabilizing mechanism, an abutting mechanism, an impact seat and a positioning mechanism. Wherein a pushing part is arranged in the pushing mechanism, an impact part is arranged at the top end of the pushing part, and a threaded part is arranged at the bottom end of the pushing part; a stabilizing mechanism is arranged on the outer wall of the thread part; an abutting mechanism is arranged on the stabilizing mechanism; an impact seat is arranged on the outer wall of the pushing part in a sliding manner; a positioning mechanism is arranged at the bottom end of the threaded part, and the abutting mechanism is arranged on the side edge of the positioning mechanism. Compared with the prior art, the maintenance cost and the time cost of workers are reduced, the structure is simple, the manufacturing cost is low, and the practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical parts dismounting technical field, especially a puller device. BACKGROUND

[0002] The bushing pressed into the blind hole of the shell, as an important part of the mechanical equipment, its dismounting process is a challenging task. When dismounting these bushings embedded in the blind hole of the shell, the existing technical means has certain limitations.

[0003] At present, the traditional dismounting method generally adopts brute force, and such dismounting method can make the shell bear uneven stress distribution, and the shell can appear deformation, crack or even fracture phenomenon; these problems usually have adverse effects on the structural stability of the equipment, and can increase the maintenance cost and time cost of the subsequent workers, therefore, it is necessary to develop a puller device of other forms and relatively simple structure. UTILITY MODEL CONTENT

[0004] In order to solve the defects of the prior art, the puller device provided by the utility model includes a pushing mechanism, a stabilizing mechanism, a resisting mechanism, an impact seat and a positioning mechanism, when the workers dismount the bushing using the puller device, the stress borne by the shell is relatively balanced, and the shell generally does not appear deformation or crack phenomenon, therefore, the utility model reduces the maintenance cost and time cost of the workers compared with the prior art, and has relatively simple structure, low cost and high practicability.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0006] The puller device comprises:

[0007] The pushing mechanism is provided with a pushing part, the top end of the pushing part is provided with an impact part, and the bottom end of the pushing part is provided with a threaded part;

[0008] The stabilizing mechanism is arranged on the outer wall of the threaded part;

[0009] The resisting mechanism is arranged on the stabilizing mechanism;

[0010] The impact seat is slidingly arranged on the outer wall of the pushing part;

[0011] Among them,

[0012] The bottom end of the threaded part is provided with a positioning mechanism, and the side edge of the positioning mechanism is the abutting mechanism; when the puller device is in a working state, under the action of the pushing mechanism, the abutting mechanism can be switched from an initial closed state to an open state, and the positioning mechanism can abut against the inner wall of the bushing; at this time, the impact seat is slid to impact the impact part, and the pushing mechanism can synchronously move with the abutting mechanism.

[0013] Further, the abutting mechanism comprises:

[0014] A plurality of clamping claws;

[0015] The bottom end of the clamping claw is provided with an abutting block for abutting against the inner wall of the bushing.

[0016] Further, the stabilizing mechanism comprises:

[0017] A stabilizing platform, a plurality of mounting grooves are formed in the stabilizing platform, the number of the mounting grooves corresponds to the number of the clamping claws, and the inner wall of the mounting groove is in contact with part of the outer wall of the clamping claw;

[0018] A hinge member is arranged at the position where the mounting groove and the clamping claw are in contact.

[0019] Further, the number of the mounting grooves is four.

[0020] Further,

[0021] A notch is formed near the bottom end of the clamping claw;

[0022] A buffer member is arranged at the notch.

[0023] Further, the buffer member is a rubber ring.

[0024] Further, the positioning mechanism comprises:

[0025] A top block is located at the bottom end of the threaded part, and the top end of the top block is in contact with the bottom end of the threaded part;

[0026] A connecting member is used to prevent the relative position deviation between the top block and the threaded part, and the connecting member is arranged at the position where the top block and the threaded part are in contact.

[0027] Further,

[0028] The top block is a circular truncated cone; and / or

[0029] The connecting member is a screw.

[0030] Further,

[0031] The outer diameter of the impact part is greater than the outer diameter of the pushing part; and / or

[0032] The top end of the impact seat is provided with a through hole, and the inner diameter of the through hole is equal to the outer diameter of the pushing part.

[0033] Further, the outer diameter of the threaded part is less than the outer diameter of the pushing part.

[0034] The utility model discloses beneficial effect is:

[0035] The utility model discloses a puller device is equipped with the mechanism of holding up, can hold up the inner wall of bushing, make the shell of being equipped with bushing bear relatively balanced stress, the puller device is equipped with the stable mechanism, can hold up the mechanism of setting up stably in the puller device, the puller device is equipped with the positioning mechanism, can improve the speed of holding up mechanism and hold up the corresponding position of bushing, thereby to a certain extent, reduced the time cost of staff, the puller device is equipped with the impact seat, can impact the impact part in pushing mechanism, thereby reach the purpose of disassembling bushing, the utility model discloses compared with prior art reduces the maintenance cost and time cost of staff, and the structure is relatively simple, and the cost cost is lower, has higher practicality. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is the overall structure schematic diagram of the utility model;

[0037] Figure 2 It is the utility model Figure 1 The enlarged view of A place in the utility model.

[0038] Reference signs:

[0039] 1, pushing mechanism, 11, pushing part, 12, impact part, 13, threaded part,

[0040] 2, stable mechanism, 21, stable platform, 211, installation slot, 212, threaded hole, 22, hinge member,

[0041] 3, holding up mechanism, 31, claw, 311, holding up block, 312, slot,

[0042] 4, positioning mechanism, 41, top block,

[0043] 5, impact seat. DETAILED DESCRIPTION

[0044] The embodiments of the utility model are described in detail below, the example of the embodiment is shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and can not be explained as the limitation of the utility model.

[0045] In addition, in the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0046] Embodiment 1

[0047] As shown in the accompanying Figure 1 and the accompanying Figure 2 , the embodiment discloses a puller device for disassembling a bushing (not shown in the figure) of a blind hole of a pressure riveting shell (not shown in the figure), which mainly comprises a pushing mechanism 1, a stabilizing mechanism 2, a bearing mechanism 3, a striking seat 5 and a positioning mechanism 4. In use, the staff first places the puller device in place; then, rotates the pushing mechanism 1 forward, and makes the positioning mechanism 4 top to the corresponding position of the bushing, so as to play a positioning role for the puller device; in this process, the bearing mechanism 3 is switched from the initial closed state to the open state; then, holds the pushing mechanism 1 with one hand to stabilize the current position of the puller device; then, holds the striking seat 5 with the other hand, and strikes the striking part 12 in the pushing mechanism 1, so that the purpose of disassembling the bushing of the blind hole of the pressure riveting shell can be achieved through the repeated striking mode.

[0048] The specific structure of the puller device is as follows: it comprises a pushing mechanism 1, the pushing mechanism 1 is provided with a pushing part 11, the top end of the pushing part 11 is provided with a striking part 12, and the bottom end of the pushing part 11 is provided with a threaded part 13; the outer wall of the threaded part 13 is provided with the stabilizing mechanism 2; the stabilizing mechanism 2 is provided with the bearing mechanism 3; the outer wall of the pushing part 11 is slidingly provided with the striking seat 5; the bottom end of the threaded part 13 is provided with the positioning mechanism 4, and the side edge of the positioning mechanism 4 is the bearing mechanism 3. Compared with the prior art, the utility model reduces the maintenance cost and time cost of the staff, and has the advantages of simple structure, low manufacturing cost and high practicability.

[0049] In a specific application scenario, as shown in the accompanying Figure 2As shown, four clamping claws 31 are arranged in the abutting mechanism 3, and the bottom end of the clamping claw 31 is provided with an abutting block 311 which can be used to abut against the side wall of the bushing. Among them, the arrangement of four clamping claws 31 in the abutting mechanism 3 can have the following effects: 1. It can improve the stability of abutting, and four clamping claws 31 can more evenly distribute the abutting force, reduce the local pressure on the shell, and avoid damage or deformation of the shell due to uneven stress; 2. It can enhance the abutting force, compared with two or three claw designs, four claws can provide a larger contact area, thereby providing stronger abutting force, suitable for heavier or larger bushings; 3. It can improve the flexibility of operation, the four-claw design makes the puller device can adapt to more different sizes and shapes of bushings, thereby increasing the versatility and applicability of the puller device; 4. It can ensure the safety of disassembly, during disassembly, four clamping claws 31 can ensure that the bushing is firmly abutted, reducing the risk of bushing falling off due to insufficient number of clamping claws 31, thereby improving the safety of operation to a certain extent.

[0050] In a specific application scenario, the stabilizing mechanism 2 mainly includes a stabilizing platform 21 and a hinge member 22; four installation grooves 211 are formed in the stabilizing platform 21, the installation grooves 211 correspond to the clamping claws 31 in the abutting mechanism 3, and the two sides of the inner wall of the installation grooves 211 are in contact with the outer wall of the clamping claws 31; a threaded hole 212 is formed in the middle of the top end of the stabilizing platform 21, and the threaded hole 212 is adapted to the threaded portion 13 of the pushing mechanism 1; when the staff rotates the pushing mechanism 1 towards the positioning mechanism 4, the stabilizing platform 21 can ascend along the preset path of the threaded portion 13, thereby bringing the clamping claws 31 to make a synchronous ascending movement; the position where the installation groove 211 contacts with the clamping claw 31 is provided with a hinge member 22; wherein the hinge member 22 is generally composed of a hinge piece (not shown in the figure) and a spring (not shown in the figure), the hinge piece is arranged at the position where the installation groove 211 contacts with the clamping claw 31, and the fixed end (not marked in the figure) of the hinge piece is located on the outer wall surface of the installation groove 211, which allows the clamping claw 31 to rotate in the installation groove 211; the front end of the clamping claw 31 is provided with a spring near the inner wall surface of the threaded hole 212, one end of the spring is connected with the clamping claw 31, and the other end of the spring is connected with the inner wall of the installation groove 211; when the puller device is not in working state and the spring is in contracted state, the clamping claw 31 can be in closed state, as shown in Figure 1 or Figure 2 When the spring is stretched, the clamping claw 31 can be switched from the closed state to the open state, thereby achieving the purpose of abutting against the inner wall of the bushing.

[0051] In a specific application scenario, as shown in Figure 2As shown, the positioning mechanism 4 mainly comprises a top block 41 and a connecting piece (not shown in the figure); the top block 41 is located at the bottom end of the threaded part 13, and the top end of the top block 41 is in contact with the bottom end of the threaded part 13; the top block 41 can improve the speed of the resisting mechanism 3 against the inner wall of the bushing; the position where the top block 41 is in contact with the threaded part 13 is provided with a connecting piece, which can prevent the relative position deviation between the top block 41 and the threaded part 13.

[0052] Further, the top block 41 is in the shape of a circular truncated cone; the design of the circular truncated cone can reduce the risk of damage to the shell by the puller device, and further enhance the positioning effect of the positioning mechanism 4. In use, first, align the bottom end of the top block 41 with the corresponding position of the bushing, that is, align the smaller end face of the top block 41 with the bushing; then, rotate the impact part 12 of the pushing mechanism 1, which is integrally connected with the pushing part 11 and the threaded part 13; when the impact part 12 is rotated, the pushing part 11 and the threaded part 13 will move synchronously; since the stable platform 21 is provided with a threaded hole 212 for screwing with the threaded part 13, under the condition that the bottom end of the clamping jaw 31 is against the bushing and the pushing part 11 is rotated, the stable platform 21 can move together with the clamping jaw 31 towards the impact part 12; in this process, the inner side surface of the clamping jaw 31 can be in contact with the inclined surface of the top block 41, which can improve the stability of the clamping jaw 31 from the closed state to the open state; after a period of time, the smaller end face of the top block 41 is against the corresponding position of the bushing, and the resisting block 311 of the clamping jaw 31 is firmly against the inner wall surface of the bushing; at this time, hold the pushing part 11 of the pushing mechanism 1 with one hand to stabilize the current position of the puller device; then, hold the impact seat 5 with the other hand and hit the impact part 12 in the pushing mechanism 1, and through this repeated impact, the purpose of disassembling the bushing pressed into the blind hole of the shell can be achieved.

[0053] Further, the aforementioned connecting piece is a screw; the fixed connection of the top end of the top block 41 and the bottom end of the threaded part 13 by the screw can improve the stability and reliability of the overall structure of the puller device.

[0054] Further, the outer diameter of the impact part 12 is greater than the outer diameter of the pushing part 11, which can improve the impact effect between the impact seat 5 and the impact part 12.

[0055] Further, the top end of the impact seat 5 is provided with a through hole (not labeled in the figure), and the inner diameter of the through hole is equal to the outer diameter of the pushing part 11, which can make the stress on the lower end surface of the impact part 12 more uniform, thereby improving the disassembly effect of the bushing to some extent.

[0056] Further, the outer diameter of the threaded part 13 is smaller than the outer diameter of the pushing part 11, which can improve the aesthetics of the overall structure of the puller device.

[0057] Example 2

[0058] As attached Figure 2 As shown, this embodiment discloses a puller device for extending the service life of the aforementioned embodiment 1. In addition to the components in the aforementioned embodiment 1, it also includes a buffer (not shown in the figure). The buffer can, to a certain extent, prevent the claw 31 from directly contacting the bushing, thereby extending the service life of the aforementioned embodiment 1.

[0059] In a specific application scenario, a slot 312 is provided near the bottom of the aforementioned claw 31, and a buffer is provided at the position of the slot 312.

[0060] Furthermore, the buffer is a rubber ring; the rubber ring can provide effective cushioning and protection for the puller device; when the claw 31 abuts against the inner wall of the bushing, the slot 312 can act as a holding block 311, and the rubber ring separates the claw 31 from the inner wall of the bushing. The rubber ring can, to a certain extent, prevent the claw 31 from directly contacting the bushing, thereby reducing the possibility of friction or damage to the claw 31 caused by the inner wall of the bushing. Therefore, this embodiment extends the service life of the aforementioned embodiment 1, and at the same time enhances the integrity of the overall structure of the aforementioned embodiment 1.

[0061] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” and “the” used in this invention may also include the plural forms. It should be further understood that the term “comprising” as used in this invention means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

Claims

1. A Llama device, characterized in that, The utility model relates to a puller device, which comprises a pushing mechanism (1) provided with a pushing part (11) having a top end provided with a striking part (12) and a bottom end provided with a threaded part (13), a stabilizing mechanism (2) provided on the outer wall of the threaded part (13), a resisting mechanism (3) provided on the stabilizing mechanism (2), and a striking seat (5) slidingly provided on the outer wall of the pushing part (11). The bottom end of the threaded part (13) is provided with a positioning mechanism (4), and the side edge of the positioning mechanism (4) is the resisting mechanism (3). When the puller device is in a working state, the resisting mechanism (3) can be switched from an initial closed state to an open state under the action of the pushing mechanism (1), the positioning mechanism (4) can abut against the inner wall of the bushing, at this time, the striking seat (5) is slid to strike the striking part (12), and the pushing mechanism (1) can synchronously move with the resisting mechanism (3). The resisting mechanism (3) comprises a plurality of clamping jaws (31). The bottom end of the clamping jaw (31) is provided with a resisting block (311) for abutting against the inner wall of the bushing. The stabilizing mechanism (2) comprises a stabilizing platform (21) provided with a plurality of mounting grooves (211) corresponding in number to the clamping jaws (31), and the inner wall of the mounting groove (211) is in contact with part of the outer wall of the clamping jaw (31). A hinge member (22) is provided at the position where the mounting groove (211) is in contact with the clamping jaw (31). The number of the mounting grooves (211) is four.

2. The draw ram apparatus of claim 1, wherein 5. The puller device according to claim 2, wherein: a notch (312) is formed near the bottom end of the clamping jaw (31); and 3. The draw ram apparatus of claim 2, wherein, a buffer member is provided at the notch (312). The buffer member is a rubber ring.

4. The draw ram apparatus of claim 3, wherein The positioning mechanism (4) comprises: a top block (41) located at the bottom end of the threaded part (13), and the top end of the top block (41) is in contact with the bottom end of the threaded part (13); and a connecting member for preventing the top block (41) from being offset in relative position from the threaded part (13), and the connecting member is provided at the position where the top block (41) is in contact with the threaded part (13).

8. The puller device according to claim 7, wherein:

6. The draw ram apparatus of claim 5, wherein, the top block (41) is in the shape of a circular truncated cone; and / or 7. The draw ram assembly of claim 1, wherein, the connecting member is a screw.

9. The puller device according to any one of claims 1-8, wherein: the outer diameter of the striking part (12) is greater than the outer diameter of the pushing part (11); and / or a through hole is formed at the top end of the striking seat (5), and the inner diameter of the through hole is equal to the outer diameter of the pushing part (11). The outer diameter of the threaded part (13) is smaller than the outer diameter of the pushing part (11). ​ ​ ​ ​ 10. The draw ram apparatus of claim 9, wherein, ​

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