Pin puller

Abstract

The utility model discloses a pin puller which comprises a connecting rod, a hand hammer and at least two pin pulling heads, and is characterized in that the hand hammer comprises a first hand hammer part and a second hand hammer part; the first hammer part comprises a first part body and a connecting part; through holes are formed in the centers of the first part body and the connecting part; one end of the first part body is provided with at least two accommodating holes, and the accommodating holes are used for storing pin pulling heads; a clamping ring groove is formed in the connecting part, and the first hammer part and the second hammer part are connected by clamping a clamping ring into the clamping ring groove; the second hammer part is provided with a second part body, and a stepped hole is formed in the center of the second part body; the second part body is further provided with a storing and taking hole, and the position of the storing and taking hole is matched with the position of the containing hole. The hammer is used for storing a plurality of pin pulling heads, so that the pin pulling heads are convenient to store and take and are not easy to lose.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment maintenance, in particular to a pin puller. Background Art

[0002] In the daily maintenance of mechanical equipment, parts connected by cylindrical pins are often encountered, and pin pullers are used at this time. Depending on the different sizes of the cylindrical pins, the threaded holes on their rear end faces also have various specifications. The most common ones are M3, M4, M5, M6, M8, etc. Generally, a special pin puller is made to connect the threaded hole on the rear end face of the cylindrical pin and the connecting rod. When in use, the fixed end of the double-headed threaded head of the pin puller is screwed into the connecting rod, and the other end is screwed into the threaded hole of the cylindrical pin. After the connection is secure, the hammer can be pulled out by hand. Since a set of pin pullers is equipped with multiple pin pullers, due to their small size, they are easy to lose if not stored properly. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to provide a pin puller which can conveniently store and take out a plurality of pin pulling heads so that the pin pulling heads are not easily lost.

[0004] In order to solve the above technical problems, the utility model provides a pin puller, comprising a connecting rod, a hand hammer and at least two pin pulling heads, wherein the hand hammer comprises a first hand hammer part and a second hand hammer part;

[0005] The first part of the hammer includes a first part body and a connecting portion; the first part body and the connecting portion have through holes in their centers; one end of the first part body has at least two receiving holes for storing a pin puller; the connecting portion has a collar groove, and the collar is engaged in the collar groove to connect the first part of the hammer to the second part of the hammer;

[0006] The second part of the hammer has a second part body, the center of which is provided with a step hole; the second part body is also provided with an access hole, the position of which is adapted to the position of the accommodating hole.

[0007] Preferably, a functional hole is provided on the same end of the first part body as the accommodating hole, and a spring and a ball are placed in the functional hole; the second part body has pits on the end adjacent to the first part of the hammer, and the number of the pits is the same as the number of the accommodating holes; the functional holes are adapted to the pits, so that when the second part of the hammer rotates relative to the first part of the hammer, the accommodating hole can be automatically aligned with the access hole.

[0008] Compared with the prior art, the utility model utilizes a hand hammer to store a plurality of pin pulling heads, so that the pin pulling heads are convenient to store and retrieve and are not easily lost. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0010] Figure 1 This is a schematic structural diagram of the pin puller of Example 1;

[0011] Figure 2 This is a schematic diagram of the hand hammer structure of Example 1;

[0012] Figure 3 This is a structural diagram of the first part of the hand hammer in Example 1;

[0013] Figure 4 This is a structural diagram of the second part of the hand hammer in Example 1. DETAILED DESCRIPTION

[0014] The following describes the implementation methods of the present invention through specific specific embodiments. Those skilled in the art can fully understand the other advantages and technical effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through different specific implementation methods, and the various details in this specification can also be applied based on different viewpoints, and various modifications or changes can be made without deviating from the overall design concept of the utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. The following exemplary embodiments of the present invention can be implemented in a variety of different forms and should not be interpreted as being limited to the specific embodiments described here. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art.

[0015] Example 1

[0016] like Figure 1 As shown, the pin puller provided in this embodiment includes a connecting rod 2, a hammer 3 and at least two pin pulling heads 1.

[0017] One end of the pin puller 1 has an external thread structure that matches the cylindrical pin, and the other end of the pin puller 1 is connected to one end of the connecting rod 2 through a thread. The other end of the connecting rod 2 has a protrusion. When pulling the pin out, the hand hammer 3 is moved to hit the protrusion at the end of the connecting rod 2, exerting a pulling force on the cylindrical pin, and finally pulling out the cylindrical pin.

[0018] In this embodiment, the access to the pin pulling head 1 is achieved by a hand hammer 3, and the specific structure of the hand hammer 3 is as follows: Figure 2 shown.

[0019] The hammer 3 includes a first hammer portion 31 and a second hammer portion 32. The first hammer portion 31 is structured as follows: Figure 3As shown, the first portion 311 and the connecting portion 312 comprise a through hole 314 at the center of the first portion 311 and the connecting portion 312. The diameter of the through hole 314 allows the connecting rod 2 to pass through, but prevents the protruding portion of the connecting rod 2 from passing through. At least two receiving holes 313 are formed at one end of the first portion 311; in this embodiment, eight receiving holes 313 are provided. These receiving holes 313 are used to store the pin puller 1. A functional hole 315 is also formed on the same end of the first portion 311 as the receiving holes 313. A spring and a ball are positioned within the functional hole 315. This functional hole 315 mates with a recess 321 in the second portion 32 of the hammer, allowing the receiving hole 313 to automatically align with the access hole 322 when the second portion 32 rotates relative to the first portion 31. The connecting portion 312 includes a retaining ring groove, which engages the retaining ring to connect the first and second portions 31 and 32 of the hammer.

[0020] The second part 32 of the hammer is structured as follows: Figure 4 As shown, the second part 32 of the hammer has a second body 321 with a stepped hole 323 at its center. This stepped hole 323 allows the connecting portion 312 to pass through. The clamping ring engages with the clamping ring groove of the connecting portion 312, rotatably connecting the first and second parts 31 and 32 of the hammer. The second body 321 also has an access hole 322, the position of which aligns with the position of the receiving hole 313. When the access hole 322 and the receiving hole 313 are aligned, the pin puller 1 can be placed into or removed from the receiving hole 313. The end of the second body 321 adjacent to the first part 31 of the hammer also has a recess 321, the number of which is the same as the number of the receiving holes 313. When the functional hole 315 is aligned with the pit 321, the ball is embedded in the pit 321 under the action of the spring, so that the relative rotation of the first part 31 of the hand hammer and the second part 32 of the hand hammer is blocked, and the obstruction of the ball can be overcome by a certain hand force torque.

[0021] In this embodiment, a plurality of pin pulling heads are stored through the accommodating hole, and the pin pulling heads are stored and retrieved through the access hole, so that the pin pulling heads are convenient to store and retrieve and are not easily lost.

[0022] The present invention has been described in detail above through specific implementation methods and examples, but these do not constitute limitations of the present invention. Without departing from the principles of the present invention, those skilled in the art may make many variations and improvements, which should also be considered as the scope of protection of the present invention.

Claims

1. A pin puller comprising a connecting rod, a hammer and at least two pin pulling heads, characterized in that: The hand hammer comprises a first hand hammer part and a second hand hammer part; The first part of the hammer includes a first part body and a connecting part; the centers of the first part body and the connecting part have through holes; one end of the first part body has at least two receiving holes, and the receiving holes are used to store the pin pulling heads; The connecting portion is provided with a clamping ring groove, and the clamping ring is clamped into the clamping ring groove to connect the first part of the hand hammer and the second part of the hand hammer; The second part of the hammer has a second part body, the center of which is provided with a step hole; the second part body is also provided with an access hole, the position of which is adapted to the position of the accommodating hole.

2. The pin puller according to claim 1, characterized in that: A functional hole is also provided on the same end of the first part body as the accommodating hole, and a spring and a ball are placed in the functional hole; the second part body has pits on the end adjacent to the first part of the hand hammer, and the number of the pits is the same as the number of the accommodating holes; the functional holes are adapted to the pits, so that when the second part of the hand hammer rotates relative to the first part of the hand hammer, the accommodating hole can be automatically aligned with the access hole.

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