Pin extractor

Abstract

The application discloses a pin pulling device, which comprises a pin puller, a hand-held piece, a connecting mechanism arranged at one end of the hand-held piece, a supporting mechanism arranged at one end of the connecting mechanism, and a lifting mechanism arranged at the other end of the connecting mechanism; the connecting mechanism is used for connecting the hand-held piece, the supporting mechanism and the lifting mechanism; and the supporting mechanism is abutted against a workpiece, and the pin is pulled out by swinging the hand-held piece and lifting the lifting mechanism through the connecting mechanism. The pin pulling device has at least two or more ways of pulling out the R pin through the lever principle, can adapt to different scenes, and can be abutted against insulator discs with different heights at any time through the movable abutting and pressing part and can be clamped at a position through a third supporting point at any time to prevent movement.

Description

Technical Field

[0001] The present invention relates to the field of insulator replacement technology, and more particularly to a pin-pulling device. Background Technology

[0002] Insulators are a common material in the power industry, often used in substations and transmission lines. Depending on the voltage level, different numbers of insulators are used to form insulator strings or multi-section insulating supports. During the replacement of insulators, workers need to manually pull out the R-pins of the insulators. However, due to the large force required for pulling out, it is often necessary to use methods such as knocking, which cannot be done without damaging the insulator, making it quite inconvenient. Summary of the Invention

[0003] In view of the problems existing in the above-mentioned pin-pulling devices, the present invention is proposed.

[0004] Therefore, the purpose of this invention is to provide a pin-pulling device that enables quick and easy removal of the R-pin.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a pin puller, comprising a handheld component, a connecting mechanism disposed at one end of the handheld component, a support mechanism disposed at one end of the connecting mechanism, and a lifting mechanism disposed at the other end of the connecting mechanism; the connecting mechanism is used to connect the handheld component, the support mechanism, and the lifting mechanism; and the support mechanism is pressed against the workpiece, and the pin is pulled out by swinging the handheld component and using the connecting mechanism to lift the lifting mechanism.

[0006] In a preferred embodiment of the pin-pulling device of the present invention, the hand-held component comprises a hand-held portion, a guide portion disposed at one end of the hand-held portion, a connecting portion disposed at one end of the guide portion for hinged connection mechanism, and a pressing portion mounted at one end of the guide portion.

[0007] In a preferred embodiment of the pin-pulling device of the present invention, the pressing part includes a conical sleeve movable in the guide part and a pressing block disposed on the outer surface of the conical sleeve.

[0008] In a preferred embodiment of the pin-pulling device of the present invention, the guide portion is tapered, with its diameter increasing from the first point toward the second point;

[0009] The conical sleeve has an increased diameter from the third point toward the fourth point;

[0010] Furthermore, the diameter of the fourth point is smaller than the diameter of the second point.

[0011] As a preferred embodiment of the pin-pulling device of the present invention, the connecting mechanism includes a first hinge member disposed at one end of the connecting portion, a second hinge member connected to one end of the first hinge member and connected to the outer surface of the support mechanism;

[0012] The first hinge is connected to the lifting mechanism by a bolt group.

[0013] As a preferred embodiment of the pin-pulling device of the present invention, the support mechanism includes a connector connected to one end of the second hinge member, an outer sleeve disposed at one end of the connector, a support sleeve disposed at one end of the outer sleeve away from the connector, a support arm fixed to one end of the support sleeve away from the outer sleeve, and a groove formed on the outer surface of the support sleeve and the support arm.

[0014] As a preferred embodiment of the pin-pulling device of the present invention, the lifting mechanism includes a lifting rod hinged to the first hinge member by the bolt group, a blocking block disposed at one end of the lifting rod and sliding inside the outer sleeve, and a lifting hook disposed at one end of the blocking block.

[0015] In a preferred embodiment of the pin-pulling device of the present invention, by passing the lifting hook through the pin, the support arm is driven to rotate from a first direction to a fourth direction through a first support point, so that the lifting hook lifts the pin from a second direction to a third direction through the first support point.

[0016] In a preferred embodiment of the pin-pulling device of the present invention, the pressing block is placed against the second support point, and the hand-held part is forced from the first direction along the fourth direction, so that the connecting part is lifted from the second direction along the third direction.

[0017] In a preferred embodiment of the pin-pulling device of the present invention, the pressing block rests against the second support point and drives the tapered sleeve to press the guide portion along the third support point.

[0018] The beneficial effects of this invention are: the device provides at least two ways to pull out the R pin using the lever principle, which can adapt to different scenarios. The movable pressing part can be used to press against insulator discs of different lengths and heights at any time, and the third support point can be used to lock the position to prevent movement. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0020] Figure 1 This is a schematic diagram of the overall structure of the pin-removing device of the present invention.

[0021] Figure 2 This is a schematic diagram of the overall structure of the pin-pulling device of the present invention.

[0022] Figure 3 This is an exploded view of the overall structure of the pin-pulling device of the present invention.

[0023] Figure 4 This is a schematic diagram of the overall front sectional structure of the pin-pulling device of the present invention.

[0024] Figure 5 This is a schematic diagram of the second support point prying principle structure of the pin-pulling device of the present invention.

[0025] Figure 6 This is a schematic diagram of the first support point prying principle structure of the pin-pulling device of the present invention.

[0026] Figure 7 This is a schematic diagram of the clamping structure of the third support point of the pin-pulling device of the present invention. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0031] Example 1

[0032] Reference Figures 1-3 According to embodiment 6, a first embodiment of the present invention provides a pin-pulling device, which includes a pin-pulling device 100, comprising a hand-held component 101, a connecting mechanism 102 disposed at one end of the hand-held component 101, a support mechanism 103 disposed at one end of the connecting mechanism 102, and a lifting mechanism 104 disposed at the other end of the connecting mechanism 102; the connecting mechanism 102 is used to connect the hand-held component 101, the support mechanism 103 and the lifting mechanism 104.

[0033] In this process, the support mechanism 103 is pressed against the workpiece 200, and the pin is pulled out by swinging the hand-held part 101 and using the connecting mechanism 102 to lift the lifting mechanism 104.

[0034] Furthermore, the support mechanism 103 includes a connector 103a connected to one end of the second hinge 102b, an outer sleeve 103b disposed at one end of the connector 103a, a support sleeve 103c disposed at the end of the outer sleeve 103b away from the connector 103a, a support arm 103d fixed to the end of the support sleeve 103c away from the outer sleeve 103b, and a slot 103e formed on the outer surfaces of the support sleeve 103c and the support arm 103d.

[0035] During use, the slot 103e is snapped onto the cup head on the insulator 201 of the workpiece 200, and the support arm 103d rests against the cup head. The outer arc of the cup head also extends into the slot 103e to form a snap-fit.

[0036] Furthermore, the lifting mechanism 104 includes a lifting rod 104a hinged to the first hinge member 102a by a bolt assembly 102c, a blocking block 104b disposed at one end of the lifting rod 104a and sliding inside the outer sleeve 103b, and a lifting hook 104c disposed at one end of the blocking block 104b.

[0037] When the support arm 103d is engaged with the cup head on the insulator 201 through the slot 103e, the lifting hook 104c needs to be inserted into the slot of the pin 202 beforehand. During this process, by applying pressure to the outer sleeve 103b, the outer sleeve 103b will apply pressure to the support arm 103d through the support sleeve 103c, and at the same time drive the support arm 103d to rotate from the first support point F in the first direction Y1 along the fourth direction X2. Then, with the first support point F as the center, with the assistance of the connector 103a, the connector 103a applies pressure to the lifting rod 104a, and the lifting rod 104a drives the lifting hook 104c through the blocking block 104b to lift the pin 202 from the second direction Y2 along the third direction X1 through the first support point F.

[0038] Throughout the process, the lifting hook 104c is able to quickly lift the pin 202.

[0039] Example 2

[0040] Reference Figures 1-5 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: in the second way of removing the pin 202, the handpiece 101 is composed of a handpiece 101a, a guide portion 101b disposed at one end of the handpiece 101a, a connecting portion 101c disposed at one end of the guide portion 101b for hinged connection mechanism 102, and a pressing portion 101d installed at one end of the guide portion 101b. The pressing portion 101d includes a conical sleeve 101d-1 that can move with the guide portion 101b and a pressing block 101d-2 disposed on the outer surface of the conical sleeve 101d-1.

[0041] Among them, by holding the hand-held part 101a, the hand-held part 101a can be connected to the connecting mechanism 102 via the guide part 101b on the hand-held part 101a and the connecting part 101c. The connecting mechanism 102 drives the support mechanism 103 and the lifting mechanism 104 as a whole, making it easy to carry.

[0042] Compared to Embodiment 1, the connecting mechanism 102 further includes a first hinge 102a disposed at one end of the connecting portion 101c, and a second hinge 102b connected to one end of the first hinge 102a and connected to the outer surface of the support mechanism 103; the first hinge 102a is connected to the lifting mechanism 104 through a bolt group 102c.

[0043] During use, the connecting part 101c is fixed to the first hinge 102a. When the connecting part 101c rotates, it can be connected to the connector 103a through the second hinge 102b. The lifting mechanism 104 can be moved by the first hinge 102a and the second hinge 102b.

[0044] The first hinge 102a can rotate with the second hinge 102b around the bolt group 102c. Similarly, the second hinge 102b can drive the lifting rod 104a to move through the bolt group 102c. The lifting rod 104a can drive the lifting hook 104c to move up and down through the blocking block 104b. However, due to the auxiliary effect of the blocking block 104b, the blocking block 104b will be stuck in the connector 103a, limiting the movement of the blocking block 104b.

[0045] Furthermore, the lifting hook 104c needs to be inserted into the slot of the pin 202 beforehand. When the pressing block 101d-2 rests on the disc of the insulator 201, the second support point G is formed by the pressing block 101d-2 and the conical sleeve 101d-1 pressing against the disc of the insulator 201. The handheld part 101a is pressed down, and the handheld part 101a is forced from the first direction Y1 along the fourth direction X2. The handheld part 101a drives the connecting part 101c to move from the second direction Y2 along the third direction X1 through the guide part 101b. This allows the connecting part 101c to lift the lifting rod 104a through the first hinge 102a and the second hinge 102b. The lifting rod 104a drives the lifting hook 104c to move up and down through the blocking block 104b, so that the lifting hook 104c pulls out the pin 202.

[0046] The remaining structure is the same as that in Example 1.

[0047] Example 3

[0048] Reference Figures 1-5 7, is the third embodiment of the present invention, which differs from the second embodiment in that it is applicable to discs of insulator 201 with different spacing.

[0049] Compared to Embodiment 2, the lifting hook 104c needs to be inserted into the slot of the pin 202 beforehand. Since the guide part 101b is conical, its diameter expands from the first point E toward the second point Q; the conical sleeve 101d-1 expands its diameter from the third point R toward the fourth point W; and the diameter of the fourth point W is smaller than the diameter of the second point Q.

[0050] Therefore, the tapered sleeve 101d-1 can move back and forth on the guide portion 101b, and the maximum range of movement of the tapered sleeve 101d-1 is from the connecting portion 101c to the second point Q. According to this range of movement, the tapered sleeve 101d-1 is moved to a suitable position. When the pressing block 101d-2 rests on the disc of the insulator 201, the second support point G is formed by the pressing block 101d-2 and the tapered sleeve 101d-1 pressing against the disc of the insulator 201.

[0051] When the gap between the guide part 101b and the conical sleeve 101d-1 is large, when the disc block of the insulator 201 abuts against the second support point G between the conical sleeve 101d-1 and the pressing block 101d-2, the conical sleeve 101d-1 will be squeezed and rotated. When the conical sleeve 101d-1 rotates, the conical sleeve 101d-1 squeezes the guide part 101b along the third support point H, so that the conical sleeve 101d-1 is stuck on the guide part 101b, and is jammed by friction.

[0052] During the jamming process, the handle 101a can be pressed down. By applying force to the handle 101a from the first direction Y1 along the fourth direction X2, the handle 101a drives the connecting part 101c to move from the second direction Y2 along the third direction X1 through the guide part 101b. This allows the connecting part 101c to lift the lifting rod 104a through the first hinge 102a and the second hinge 102b. The lifting rod 104a drives the lifting hook 104c to move up and down through the blocking block 104b, causing the lifting hook 104c to pull out the pin 202.

[0053] The remaining structure is the same as that in Example 2.

[0054] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0055] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A pin-pulling device, characterized in that: include, The pin puller (100) includes a handpiece (101), a connecting mechanism (102) disposed at one end of the handpiece (101), a support mechanism (103) disposed at one end of the connecting mechanism (102), and a lifting mechanism (104) disposed at the other end of the connecting mechanism (102). The connecting mechanism (102) is used to connect the handheld component (101), the support mechanism (103), and the lifting mechanism (104); and, The support mechanism (103) is pressed against the workpiece (200), and the pin is pulled out by swinging the handpiece (101) and using the connecting mechanism (102) to lift the lifting mechanism (104). The handheld component (101) consists of a handheld part (101a), a guide part (101b) disposed at one end of the handheld part (101a), a connecting part (101c) disposed at one end of the guide part (101b) for hinged connection mechanism (102) and a pressing part (101d) installed at one end of the guide part (101b). The pressing part (101d) includes a conical sleeve (101d-1) that can move with the guide part (101b) and a pressing block (101d-2) disposed on the outer surface of the conical sleeve (101d-1). The connecting mechanism (102) includes a first hinge (102a) disposed at one end of the connecting part (101c), a second hinge (102b) connected to one end of the first hinge (102a) and connected to the outer surface of the support mechanism (103). The first hinge (102a) is connected to the lifting mechanism (104) by a bolt group (102c); The support mechanism (103) includes a connector (103a) connected to one end of the second hinge (102b), an outer sleeve (103b) disposed at one end of the connector (103a), a support sleeve (103c) disposed at the end of the outer sleeve (103b) away from the connector (103a), a support arm (103d) fixed to the end of the support sleeve (103c) away from the outer sleeve (103b), and a slot (103e) formed on the outer surface of the support sleeve (103c) and the support arm (103d).

2. The pin-pulling device according to claim 1, characterized in that: The guide portion (101b) is tapered, with its diameter increasing from the first point (E) toward the second point (Q); The conical sleeve (101d-1) expands in diameter from the third point (R) toward the fourth point (W); Furthermore, the diameter of the fourth point (W) is smaller than the diameter of the second point (Q).

3. The pin-pulling device according to claim 2, characterized in that: The lifting mechanism (104) includes a lifting rod (104a) hinged to the first hinge (102a) by the bolt group (102c), a blocking block (104b) disposed at one end of the lifting rod (104a) and sliding inside the outer sleeve (103b), and a lifting hook (104c) disposed at one end of the blocking block (104b).

4. The pin-pulling device according to claim 3, characterized in that: The support position where the support arm (103d) contacts the workpiece (200) is the first support point (F); the pressing position where the pressing block (101d-2) contacts the workpiece (200) is the second support point (G); and the clamping position where the conical sleeve (101d-1) contacts the guide part (101b) is the third support point (H). When the handle (101a) is pressed, the direction in which the handle (101a) swings toward the support mechanism (103) is the first direction (Y1), and the direction opposite to the first direction (Y1) is the second direction (Y2); the direction of displacement of the lifting hook (104c) when it pulls the pin (202) out of the workpiece (200) is the third direction (X1), and the direction opposite to the third direction (X1) is the fourth direction (X2). By passing the lifting hook (104c) through the pin (202), the support arm (103d) is driven to rotate from the first direction (Y1) to the fourth direction (X2) through the first support point (F), so that the lifting hook (104c) lifts the pin (202) from the second direction (Y2) to the third direction (X1) through the first support point (F).

5. The pin-pulling device according to claim 4, characterized in that: The pressing block (101d-2) is placed against the second support point (G), and the hand-held part (101a) is forced from the first direction (Y1) along the fourth direction (X2), so that the connecting part (101c) lifts the lifting mechanism (104) from the second direction (Y2) along the third direction (X1).

6. The pin-pulling device according to claim 5, characterized in that: The pressing block (101d-2) rests against the second support point (G) and drives the conical sleeve (101d-1) to press the guide part (101b) along the third support point (H).

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