Pin taking-out device

Abstract

According to the pin taking-out device, a pin seat is horizontally placed on a working face, pin holes are formed in the upper portion and the lower portion of the pin seat, and pins can be contained; a rod core of the pull rod and a hole core of the pin hole are arranged concentrically; the collision block is slidably connected with the pull rod; the limiting blocks are arranged in the reciprocating sliding path direction of the collision block on the pull rod at intervals; the other end of the sleeve is detachably connected with the end, close to the pin seat, of the pull rod. The mode that the pin and the pull-out piece are connected through threads is abandoned, one end of the sleeve is fixedly connected with one end of the pull rod, the other end of the sleeve extends into the pin hole in the pin base, an operator integrally welds the sleeve and the fractured pin, welding liquid is restrained through the structure of the inner wall of the sleeve, and the pull-out piece is pulled out. And on the other hand, it is guaranteed that the sleeve and the fracture section of the pin are located in the same coaxiality, the fracture surface of the pin is evenly stressed, and the precision of the original pin is effectively guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of equipment maintenance tools, and in particular to a pin removal device. Background Art

[0002] Pin pullers are tools frequently used in maintenance work. During maintenance work, the common method for removing pins is to knock the pins out of the equipment, so that some precision-assembled parts are no longer accurately positioned after several disassemblies and assemblies, leading to various problems, seriously affecting the normal use of the equipment, and the workload and safety hazards of maintenance personnel are very large.

[0003] In the prior art, a device named "A Pin Puller" (Announcement No. CN201192833) provides the following technical solution: connect the screw rod with the pin, rotate the handle to connect it with the screw rod, and then use the impact block to hit the shoulder on the handle. Under the action of the impact force, the pin can be pulled out.

[0004] This type of pin puller has the following problems during use: it is not only unsafe when hitting the shoulder on the handheld handle, but also the labor intensity of the user is still very high; it is easy for the pin to be unable to be pulled out due to uneven force, or the screw rod is broken in the threaded inner hole of the pin. If this happens, the screw rod must be replaced, the bolt broken in the threaded hole of the pin must be taken out with a hand drill, and then the thread must be re-tapped in the inner hole of the pin, which further increases the operator's workload and labor intensity. Utility Model Content

[0005] The embodiment of the present application provides a pin removal device, aiming to improve the efficiency of pin removal while reducing the labor intensity of operators.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] A pin removal device is used in the removal operation scenario of a broken pin in a pin seat, comprising a pull rod, a collision block, a limit block, a sleeve, and a pin seat;

[0008] The pin seat is placed horizontally on the work surface, and the pin seat is provided with pin holes at the top and bottom to accommodate the pins;

[0009] The pull rod is arranged vertically, and the rod core of the pull rod is arranged coaxially with the hole core of the pin hole;

[0010] The collision block is sleeved on the rod body of the pull rod and is slidably connected to the pull rod;

[0011] The limit blocks are arranged at intervals on the direction of the back-and-forth sliding path of the pull rod;

[0012] One end of the sleeve is integrally connected to one end surface of the pin close to the upper end surface of the pin seat, and the other end of the sleeve is detachably connected to one end of the pull rod close to the pin seat.

[0013] Furthermore, the outer diameter of the sleeve is smaller than the hole diameter of the pin hole, and the core of the sleeve is coaxially arranged with the core of the pin hole.

[0014] Furthermore, the number of the limiting blocks is set to two, and the end surface area of ​​the limiting block is larger than the hole area of ​​the via hole.

[0015] Furthermore, one end of the sleeve close to the pull rod is threadedly connected to one end of the pull rod close to the pin seat.

[0016] Furthermore, a convex strip extends outwardly from the middle portion of the collision block along its circumference, and a plurality of convex strips are provided and evenly distributed on the surface of the middle portion of the collision block.

[0017] Furthermore, a through hole is provided in the middle of the collision block, and the hole wall of the through hole is slidably connected to the rod body of the pull rod.

[0018] One or more technical solutions provided in the embodiments of the present utility model have at least the following technical effects or advantages:

[0019] This application abandons the threaded connection between the pin and the puller, and fixes one end of the sleeve to one end of the pull rod, and the other end of the sleeve extends to the pin hole in the pin seat. The operator welds the sleeve and the broken pin in one piece, and uses the structure of the inner wall of the sleeve to constrain the welding liquid, so that the welding liquid can effectively contact the sleeve and the broken section of the pin, ensuring a stable connection between the sleeve and the pin; on the other hand, it ensures that the sleeve and the broken section of the pin are in the same coaxiality, so that the pin fracture surface is evenly stressed, and pulling out the broken pin can ensure the accuracy of the original pin. The staff can hold the collision block and slide back and forth on the pull rod, so that the slider hits the limit block multiple times, thereby pulling the broken pin out of the pin hole, reducing the work intensity of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments of the utility model or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present application;

[0022] Figure 2This is a schematic diagram of the structure of the collision block in the embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of the structure of the pull rod in the embodiment of the present application;

[0024] Figure 4 This is a schematic diagram of the structure of the connection between the pull rod and the collision block in this application.

[0025] Icon: 10-pull rod; 11-limit block; 20-bumper; 21-convex strip; 22-through hole; 30-sleeve; 40-pin seat; 41-pin hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0028] Combination Figure 1-Figure 4As shown, a pin removal device is used in the removal operation scenario of a broken pin in a pin seat 40, including a pull rod 10, a collision block 20, a limit block 11, a sleeve 30, and a pin seat 40; the pin seat 40 is placed horizontally on a working surface, and the pin seat 40 is provided with pin holes 41 at the top and bottom to accommodate the pin; the pull rod 10 is arranged vertically, and the rod core of the pull rod 10 is coaxially arranged with the hole core of the pin hole 41; the collision block 20 is sleeved on the rod body of the pull rod 10 and is slidably connected to the pull rod 10; the limit block 11 is arranged at intervals on the collision block 20 in the direction of the back and forth sliding path of the pull rod 10; one end of the sleeve 30 is integrally connected to the end face of the pin close to the upper end face of the pin seat 40, and the other end of the sleeve 30 is detachably connected to the end of the pull rod 10 close to the pin seat 40.

[0029] The pin extraction device in the present application is used to extract the pin broken in the pin hole 41 of the pin seat 40. It is composed of a pull rod 10, a collision block 20, a sleeve 30, and a limit block 11. The present application abandons the threaded connection between the pin and the extraction member. The extraction member in the present application is a sleeve 30, one end of the sleeve 30 is fixedly connected to one end of the pull rod 10, and the other end of the sleeve 30 extends to the pin hole 41 in the pin seat 40, and is integrally connected with the pin broken in the pin hole 41 to form an integrated structure. This arrangement can avoid the pin being unable to be pulled out normally due to uneven force on the sleeve 30 and the pin. The staff can hold the collision block 20 and slide it back and forth on the pull rod 10, so that the slider hits the limit block 11 multiple times, so that the pull rod 10 pulls the broken pin out of the pin hole 41.

[0030] In the above scheme, the sleeve 30 and the pin are integrally connected in the form of surfacing welding. The specific method is to first contact one end of the sleeve 30 with the fracture surface of the pin, then pour and / or stack solder liquid into the sleeve 30, and then connect the other end of the sleeve 30 to the pull rod 10.

[0031] The outer diameter of the sleeve 30 is smaller than the diameter of the pin hole 41, and the core of the sleeve 30 is coaxial with the core of the pin hole 41. This arrangement is to facilitate the operator to weld the sleeve 30 and the broken pin in one piece, and to use the structure of the inner wall of the sleeve 30 to constrain the welding liquid so that the welding liquid can effectively contact the sleeve 30 and the broken section of the pin to ensure a stable connection between the sleeve 30 and the pin; on the other hand, it ensures that the sleeve 30 and the broken section of the pin are in the same coaxiality, so that the pin fracture surface is evenly stressed to ensure the stable removal of the pin.

[0032] There are two limit blocks 11, and the end surface area of ​​the limit block 11 is larger than the empty area of ​​the through hole 22. The above scheme is set up to restrict the displacement path of the collision block 20 on the rod 10 for the convenience of the operator; on the other hand, it is to prevent the collision block 20 from being separated from the rod 10, so that the collision block 20 hits the limit block 11 to generate a force to pull out the pin while ensuring the personal safety of the operator.

[0033] One end of the sleeve 30 close to the pull rod 10 is screwed to one end of the pull rod 10 close to the pin seat 40. The purpose of this arrangement is to facilitate the removal of the pin after removal, and to facilitate the selection of sleeves 30 of different sizes to be suitable for pins of different sizes.

[0034] The middle part of the collision block 20 has a convex strip 21 extending outward along its circumference, and a plurality of convex strips 21 are provided and evenly distributed on the surface of the middle part of the collision block 20. The convex strips 21 are provided to increase the friction between the operator's palm and the middle part of the collision block 20. On the one hand, it is convenient for the operator to exert force to ensure that the force generated when the collision block 20 collides with the limit block 11 can stably remove the pin, and on the other hand, it is to prevent the operator's palm from slipping off the collision block 20, causing safety hazards.

[0035] A through hole 22 is provided in the middle of the collision block 20, and the hole wall of the through hole 22 is slidably matched with the rod body of the pull rod 10. The through hole 22 is provided to enable the collision block 20 to slide on the rod body of the pull rod 10, so that the collision block 20 hits the limit rod to generate a force to pull out the pin.

[0036] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0037] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A pin removal device, used in the removal of a broken pin in a pin holder, characterized in that: It comprises a pull rod (10), a collision block (20), a limit block (11), and a sleeve (30); The pin seat (40) is placed horizontally on the work surface, and the pin seat (40) is provided with pin holes (41) at the top and bottom to accommodate the pins; The pull rod (10) is arranged vertically, and the rod core of the pull rod (10) is arranged coaxially with the hole core of the pin hole (41); The collision block (20) is sleeved on the rod body of the pull rod (10) and is slidably connected to the pull rod (10); The limit blocks (11) are arranged at intervals on the collision block (20) in the direction of the back-and-forth sliding path of the pull rod (10); One end of the sleeve (30) is integrally connected to one end surface of the pin close to the upper end surface of the pin seat (40), and the other end of the sleeve (30) is detachably connected to one end of the pull rod (10) close to the pin seat (40).

2. The pin removal device according to claim 1, characterized in that: The outer diameter of the sleeve (30) is smaller than the hole diameter of the pin hole (41), and the core of the sleeve (30) is coaxially arranged with the core of the pin hole (41).

3. The pin removal device according to claim 1, characterized in that: A through hole (22) is provided in the middle of the collision block (20), and the hole wall of the through hole (22) is slidably connected to the rod body of the pull rod (10).

4. The pin removal device according to claim 3, characterized in that: The number of the limiting blocks (11) is set to two, and the end surface area of ​​the limiting block (11) is larger than the airspace area of ​​the via hole (22).

5. The pin removal device according to claim 2, characterized in that: The other end of the sleeve (30) is threadedly connected to one end of the pull rod (10) close to the pin seat (40).

6. The pin removal device according to claim 1, characterized in that: A convex strip (21) extends outwardly from the middle of the collision block (20) along its circumference, and a plurality of convex strips (21) are provided and are evenly distributed on the surface of the middle of the collision block (20).

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