CN212372095U - Pin puller - Google Patents

Abstract

The utility model provides a pin puller for taper pin that will have the internal thread structure is extracted, and the purpose is solved current taper pin and is extracted the in-process and easily cause the technical problem of the surface plane fish tail of hole surface damage and axle. This pin puller includes: the support piece is provided with a first shaft hole and a second shaft hole which respectively extend inwards from two ends of the support piece, and the connecting piece is sleeved in the first shaft hole in a sliding mode. The utility model discloses a support piece's first shaft hole cup joints in the taper pin, bolt spare screw thread connect in the screw hole of connecting piece soon, and the tip of this bolt spare screw hole of back-out with the internal thread of taper pin connects soon mutually. It is therefore this taper pin of extraction that only need rotatory bolt spare to give ascending axial force of taper pin, thereby can make the slow not hard up of taper pin, the utility model discloses simple structure, easy and simple to handle, dependable performance, greatly reduced to the surperficial fish tail of taper pin hole surface damage and axle when dismantling, further improved dismantlement efficiency.

Description

Pin puller

Technical Field

The utility model relates to a extracting tool technical field, concretely relates to pin puller.

Background

Taper pins are common fasteners used in mechanical manufacturing, and the installation of parts with position precision requirements in mechanical equipment usually adopts taper pins to accurately position, and the taper pins are widely used. The internal thread taper pin generally comprises a taper pin body, a threaded hole is formed in the tail of the taper pin body and positioned by the taper pin body, and the arranged threaded hole is mainly used for facilitating disassembly of the taper pin. The traditional conical pin dismounting mode is that a base plate is added through a bolt matched with the nominal diameter of an internal thread, dismounting is carried out through impact modes such as hammer knocking and the like, the conical pin internal thread can be damaged due to the dismounting method, and the dismounting efficiency is not high, and time and labor are wasted. In addition, in the actual use process, the pin pulling mode often causes hole surface damage and shaft surface plane scratch due to the problems of overlarge torque, improper pin pulling method, careless collision of a tool on a product and the like in the pulling process.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model aims at providing a pin puller has solved the technical problem that the in-process was extracted to current taper pin easily caused the surperficial fish tail of hole surface damage and axle.

In order to achieve the above object, the utility model provides a following technical scheme:

a pin puller for pulling out a conical pin having an internal thread structure, the conical pin being inserted into an appliance, comprising: the supporting piece is provided with a first shaft hole and a second shaft hole, the first shaft hole extends inwards from one end face of the supporting piece, the second shaft hole extends inwards from the other end face of the supporting piece, and the first shaft hole is communicated with the second shaft hole and is concentrically arranged; the connecting piece is slidably sleeved in the first shaft hole of the supporting piece; a bolt member threadably engaged in the threaded hole of the connecting member; when the pin puller is used, the first axial hole of the supporting piece is sleeved on the taper pin; the bolt piece is screwed in the threaded hole of the connecting piece, and the end part of the bolt piece is screwed out of the threaded hole and is screwed with the internal thread of the taper pin.

Further, one end of the connecting piece, which is far away from the taper pin, is provided with a flat mouth structure.

Further, one end of the bolt piece far away from the taper pin is of a square structure.

Further, the bolt piece comprises a threaded part and an optical axis part, the optical axis part is formed by extending outwards from the square structure, and a stop block is arranged at the tail end of the optical axis part; the optical axis part is detachably provided with a sliding hammer which slides along the axial direction of the optical axis part.

Further, the stopper is integrally formed at a distal end of the optical axis portion or is separately connected to the distal end of the optical axis portion.

Furthermore, the sliding hammer is made of metal.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a support piece's first axle hole cup joints in the taper pin, and bolt spare screw thread connects in the screw hole of connecting piece soon, only needs rotatory bolt spare to give ascending axial force of taper pin, thereby can make the taper pin slowly become flexible extract this taper pin, when meetting the taper pin and extracting because of area of contact is too big difficult for simultaneously, can make the slow not hard up back of taper pin extract through keeping a long-term axial force, avoid because of moment is too big fish tail hole surface.

2. The connecting piece can satisfy the not screw hole demand of equidimension on the different taper pins, and convenient the change has increased the utility model discloses an application scope.

3. Through the cooperation of slide hammer and dog, be favorable to further conveniently dismantling labour saving and time saving to the taper pin when using.

4. The utility model discloses simple structure, easy and simple to handle, dependable performance, greatly reduced to the surperficial fish tail of taper pin hole surface damage and axle when dismantling, further improved dismantlement efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

fig. 3 is a schematic diagram of another embodiment of fig. 2.

Reference numerals:

1. a taper pin; 2. a device; 3. a support member; 4. a connecting member; 5. a bolt member; 6. a sliding hammer; 7. a stopper; 10. connecting holes; 10a, internal threads; 30. a first shaft hole; 31. a second shaft hole; 40. a flat mouth structure; 41. a threaded hole; 4a, a first internal thread; 50. a square structure; 5a, a threaded portion; 5b, a light axis part.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the claimed embodiments. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the embodiments of the present application, it is to be understood that the terms "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "end", and the like refer to orientations or positional relationships based on the drawings, and are used merely for convenience in describing the embodiments of the present application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the embodiments of the present application.

In the embodiments of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the embodiments of the present application, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. In order to simplify the disclosure of the embodiments of the present application, the components and arrangements of the specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the present application. Moreover, the claimed embodiments may repeat reference numerals and/or letters in the various examples, which have been repeated for purposes of brevity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example one

As shown in fig. 1 and fig. 2, the utility model provides an application embodiment provides a pin puller for extracting taper pin 1 that has internal thread structure, taper pin 1 peg graft in device 2, this pin puller includes: support 3, connecting piece 4, bolt piece 5.

Specifically, the support 3 has a first shaft hole 30 and a second shaft hole 31, the first shaft hole 30 extends inward from one end surface of the support 3, the second shaft hole 31 extends inward from the other end surface of the support 3, the first shaft hole 30 is communicated with the second shaft hole 31 and is concentrically arranged, and the diameter of the second shaft hole 31 is smaller than that of the first shaft hole 30. When in use, the first shaft hole 30 of the support member 3 is sleeved on the taper pin 1.

The connecting piece 4 is slidably sleeved in the first shaft hole 30 of the supporting piece 3, specifically, the connecting piece 4 is provided with a threaded hole 41, the inner wall of the threaded hole 41 is provided with a first internal thread 4a, and the threaded hole 41 is located at the middle position of the connecting piece 4; one end of the connecting piece 4 far away from the taper pin 1 is a flat mouth structure 40.

The bolt piece 5 is screwed into the threaded hole 41 of the connecting piece 4, and the end of the bolt piece 5 away from the taper pin 1 is provided with a square structure 50. The specific bolt member 5 is screwed together with the first internal thread 4a of the connecting member 4 by the threaded portion 5 a.

The working process of the pin puller comprises the following steps: when the pin puller is used, the small-diameter part of the support part 3 penetrates through the taper pin 1 and then is horizontally placed, namely, the first shaft hole 30 of the support part 3 is sleeved on the taper pin 1; the connecting piece 4 is put into the first shaft hole 30 of the supporting piece 3 and is screwed with the taper pin 1; next, the bolt member 5 is screwed into the threaded hole 41 of the connecting member 4, i.e., the threaded portion 5a is screwed into the first internal thread 4a, while the bottom end portion of the bolt member 5 is screwed out of the threaded hole 41 into the internal thread 10a of the taper pin 1. The bolt piece 5 is then rotated to give the taper pin 1 an upward axial force (which may be maintained for a period of time if necessary), so that the taper pin 1 is slowly loosened and the taper pin 1 is extracted.

Example 2

As shown in fig. 3, the difference from embodiment 1 is that a slide weight 6 and a stopper 7 are further provided above the threaded portion 5a, and the rest of the structure is the same as that in embodiment 1. Specifically, the bolt member 5 includes a threaded portion 5a and a light axis portion 5b, the light axis portion 5b is formed by extending outward from the rectangular structure 50, and the slide weight 6 and the stopper 7 are disposed on the extended light axis portion 5 b. Specifically, the light shaft portion 5b is provided with a stopper 7 at the end, that is, the stopper 7 is provided on the top of the bolt member 5. The stopper 7 may be integrally formed at the end of the optical axis portion 5b, or may be detachably connected to the end of the optical axis portion 5 b. The light shaft part 5b is detachably provided with a sliding hammer 6 which slides along the axial direction of the light shaft part 5b, and the sliding hammer 6 is made of metal materials.

When in use, the small-diameter part of the support member 3 is horizontally placed after penetrating through the taper pin 1, namely, the first shaft hole 30 of the support member 3 is sleeved on the taper pin 1; the connecting piece 4 is put into the first shaft hole 30 of the supporting piece 3 and is screwed with the taper pin 1; next, the bolt member 5 is screwed into the threaded hole 41 of the connecting member 4, i.e., the threaded portion 5a is screwed into the first internal thread 4a, while the bottom end portion of the bolt member 5 is screwed out of the threaded hole 41 into the internal thread 10a of the taper pin 1. Then, the sliding hammer 6 is held by hand, the sliding hammer 6 is moved from bottom to top, and the taper pin 1 is pulled out by the collision of the sliding hammer 6 with the stopper 7. Through the cooperation of slide hammer 6 and dog 7, can conveniently dismantle labour saving and time saving to taper pin 1 when using.

Claims (7)

1. Pin puller for extracting a taper pin (1) with an internal thread structure, wherein the taper pin (1) is inserted into a device (2), characterized by comprising:

the supporting piece (3) is provided with a first shaft hole (30) and a second shaft hole (31), the first shaft hole (30) extends inwards from one end face of the supporting piece (3), the second shaft hole (31) extends inwards from the other end face of the supporting piece (3), and the first shaft hole (30) is communicated with the second shaft hole (31) and is arranged concentrically;

the connecting piece (4) is sleeved in the first shaft hole (30) of the supporting piece (3) in a sliding way;

a bolt member (5) which can be screwed into the threaded hole (41) of the connecting member (4);

when the pin puller is used, the first shaft hole (30) of the supporting piece (3) is sleeved on the taper pin (1); the bolt piece (5) is screwed in a threaded hole (41) of the connecting piece (4), and the end part of the bolt piece (5) is screwed out of the threaded hole (41) and is screwed with the internal thread (10 a) of the taper pin (1).

2. Pin puller according to claim 1, characterised in that the end of the connecting piece (4) remote from the conical pin (1) has a flat mouth structure (40).

3. A pin puller as claimed in claim 1 or 2, characterised in that the end of the bolt piece (5) remote from the taper pin (1) has a tetragonal structure (50).

4. The pin puller according to claim 3, wherein:

the bolt piece (5) comprises a threaded part (5 a) and a light shaft part (5 b), the light shaft part (5 b) is formed by extending outwards from the square structure (50), and a stop block (7) is arranged at the tail end of the light shaft part (5 b);

the light shaft part (5 b) is detachably provided with a sliding hammer (6) which slides along the axial direction of the light shaft part (5 b).

5. The pin puller according to claim 1, wherein:

the bolt piece (5) comprises a threaded portion (5 a) and a light shaft portion (5 b), wherein the threaded portion (5 a) and the light shaft portion (5 b) are integrally formed, and a stopper (7) is arranged at the tail end of the light shaft portion (5 b);

the light shaft part (5 b) is detachably provided with a sliding hammer (6) which slides along the axial direction of the light shaft part (5 b).

6. The pin puller according to claim 5, wherein the stopper (7) is integrally formed at the distal end of the optical axis portion (5 b) or is separately connected to the distal end of the optical axis portion (5 b).

7. A pin puller as claimed in claim 5 or 6, characterised in that the sliding hammer (6) is made of metal.

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