Multifunctional pin puller device

Abstract

The multifunctional pin puller device comprises a sliding rod, one end of the sliding rod is connected with a limiting head, and the other end of the sliding rod is connected with a blocking head. A driving hammer is arranged between the blocking head and the limiting head and is in sliding fit with the sliding rod. The end, away from the sliding rod, of the limiting head is connected with a clamping device which is connected with the pin. One end of the threaded rod is connected with the limiting head, the other end of the threaded rod is connected with the fixing head and provided with a sliding block, the circumference of the outer side of the sliding block is concave, a lantern ring is sleeved with a groove, a plurality of transverse rods are evenly arranged on the outer side of the lantern ring, and connecting rods are hinged to the two ends of each transverse rod respectively; the clamping rods abut against the outer circumference of the pin, the position of the lantern ring is adjusted by rotating the sliding block, the angle of the connecting rod is driven to change, and the distance between the transverse rod and the threaded rod is changed, so that the distance between the clamping rods is adjusted to adapt to clamping and positioning of pins of different sizes, and the pin is detached by sliding the driving hammer to collide with the blocking head.

Description

Technical Field

[0001] This utility model relates to the field of pin removal equipment technology, specifically a multi-functional pin puller device. Background Technology

[0002] Currently, there are many specifications and types of equipment, and the position and size of various pins vary on different equipment. The disassembly process requires the use of tools such as screwdrivers. When the pin cannot be removed, tools such as pry bars and hairpins are also needed for assistance, making the process very cumbersome. For some pins that are difficult to remove, methods such as welding steel blocks are often used to pull them out. This is not only time-consuming and laborious, but also poses certain safety hazards, resulting in low work efficiency. During equipment maintenance, there are many connecting pins and positioning pins in various parts. Since these pins are of different sizes, different types of pin pullers are required during maintenance. This is particularly prominent during rolling mill maintenance, as carrying multiple pin pullers is very inconvenient and increases the complexity and risk of operation. Utility Model Content

[0003] The purpose of this utility model is to provide a multifunctional pin puller device to solve the problem that during equipment maintenance, there are many connecting pins and positioning pins in various parts. Since these pins are of different sizes, different types of pin pullers are required during maintenance. This is particularly prominent during rolling mill maintenance, as carrying multiple pin pullers is very inconvenient and increases the complexity and risk of operation.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional pin puller device, comprising a sliding rod, a hammer, a stop, a limiting head, and a clamping device. The limiting head is connected to one end of the sliding rod, and the stop is connected to the end away from the limiting head. A hammer is disposed between the stop and the limiting head, sleeved on the sliding rod and slidably engaged with it. The clamping device is connected to the end of the limiting head away from the sliding rod and is connected to the pin.

[0005] The clamping device includes a threaded rod, a fixed head, a slider, a collar, a connecting rod, a crossbar, and a clamping rod. One end of the threaded rod is connected to a limiting head and is coaxially arranged with the slider. The other end of the threaded rod, the threaded end of which is cut off, is connected to a fixed head. A slider is provided on the threaded rod, and the slider slides and engages with the threaded rod. The internal thread of the slider and the external thread of the threaded rod are mutually engaged. The outer circumference of the slider is concave, and a collar is fitted inside the concave groove. Several crossbars are evenly arranged at an angle on the outer circumference of the collar. The left and right ends of the crossbars are symmetrical and each is hinged to a pair of connecting rods, which are respectively arranged on the front and rear ends of the crossbars. The ends of the connecting rods on the left and right sides away from the crossbars are symmetrical and are respectively hinged to the fixed head and the collar. A clamping rod is connected to the end of the crossbar near the pin, and the clamping rod abuts against the outer circumference of the pin.

[0006] Preferably, the clamping rod is L-shaped, with the top of the vertical end of the clamping rod connected to the horizontal bar, the bottom of the vertical end extending toward the center of the fixing head, and the horizontal end abutting against the outer circumference of the pin.

[0007] Preferably, the lateral end of the clamping rod is arc-shaped and the outer circumferential contact end of the pin is arc-shaped, and the arc-shaped end fits tightly against the outer circumference of the pin.

[0008] Preferably, the contact end between the collar and the slider is connected to a bearing seat.

[0009] Preferably, the end of the crossbar located at the pin is flush with the end of the fixed head away from the threaded rod.

[0010] Preferably, it also includes a hand-held part connected to the end of the stop away from the slide bar.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This design allows the rotating slider to move the collar away from or closer to the fixed head, simultaneously changing the angle of the connecting rod to move the crossbar closer to or away from the threaded rod. This also increases or decreases the distance between the transverse ends of the clamping rod, thus adapting to the clamping and positioning of pins of different sizes. Furthermore, the sliding hammer collidees with the stop head to disassemble the pin. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the clamping device structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the clamping rod structure of this utility model.

[0016] In the diagram: 1. Sliding rod; 2. Hammer; 3. Stop; 4. Limiting head; 5. Clamping device; 501. Threaded rod; 502. Fixed head; 503. Sliding block; 504. Collar; 505. Connecting rod; 506. Crossbar; 507. Clamping rod. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1: Please refer to Figure 1-3This utility model provides an embodiment of a multifunctional pin puller device, including a slide rod 1, a hammer 2, a stop head 3, a limiting head 4, and a clamping device 5. The limiting head 4 is connected to either end of the slide rod 1. The slide rod 1 supports and guides the movement of the hammer 2, providing a fixed base so that the hammer 2, sleeved on the slide rod 1, can move smoothly and collide with the stop head 3 to disassemble the pin. The end away from the limiting head 4 is connected to the stop head 3. The stop head 3 is located at the end of the slide rod 1, serving to restrict the hammer 2 and working in conjunction with the hammer 2. The hammer 2 slides and collides with the stop head 3, thereby disassembling the pin. The hammer 2 is positioned between the stop head 3 and the limiting head 4. The hammer 2 is used for… The hammer 2 provides impact force to help remove pins that are difficult to pull out. Through sliding and impacting the stop head 3, it generates a displacement force away from the pin, causing the pin to loosen or disengage. An operating lever is connected to the outer circumference of the hammer 2, providing a hand grip. It is fitted onto the slide rod 1 and slidably engages with it. A clamping device 5 is connected to the end of the limiting head 4 away from the slide rod 1. The limiting head 4 acts as a connecting component to the clamping device 5, connecting the clamping device 5 and the hammering part into a single unit. Simultaneously, it cooperates with the stop head 3 to define the movement range of the hammer 2, preventing the hammer 2 from moving beyond its designed range. The clamping device 5 is connected to the pin directly, serving to clamp and position the pin.

[0022] The clamping device 5 includes a threaded rod 501, a fixed head 502, a slider 503, a collar 504, a connecting rod 505, a crossbar 506, and a clamping rod 507. One end of the threaded rod 501 is connected to the limiting head 4. The threaded rod 501 is coaxially arranged with the slide bar 1. By rotating the slider 503, the internal thread of the slider 503 engages with the external thread of the threaded rod 501, thereby moving the slider 503. This causes the connecting rod 505 to shift at an angle, moving the crossbar 506 away from or towards the threaded rod 501, and coaxially arranged with the slide bar 1. The other end of the threaded rod 501 is connected to the threaded end near the pin, and the fixed head 502 is connected to the threaded end of the threaded rod 501 to provide the installation position for the connecting rod 505 at the other end, while preventing... The slider 503 extends beyond a predetermined range. A slider 503 is mounted on the threaded rod 501, and it slidably engages with the threaded rod 501. Through the engagement of the internal and external threads of the threaded rod 501, the slider 503 moves along the direction of the threaded rod 501, thereby adjusting the crossbar 506 to move closer to or further away from the threaded rod 501, thus widening or narrowing the gap between the clamping rods 507. The internal thread of the slider 503 engages with the external thread of the threaded rod 501. The outer circumference of the slider 503 is concave, and a collar 504 is fitted inside the groove. A bearing seat is connected to the contact end of the collar 504 and the slider 503. The collar 504 is installed in the groove on the outer circumference of the slider 503 and simultaneously engages with the contact end of the slider 503. The contact end is connected to a bearing seat, and the crossbar 506 is limited by the connecting rod 505 on the fixed head 502, so that when the slider 503 rotates, the collar 504 does not rotate synchronously with the slider 503, and when the slider 503 moves towards the fixed head 502, it synchronously drives the collar 504 to move, thereby changing the angle of the connecting rod 505. Several crossbars 506 are evenly arranged at an angle on the outer circumference of the collar 504. The left and right ends of the crossbars 506 are symmetrical and each is hinged to a pair of connecting rods 505. The connecting rods 505 connecting the fixed head 502 and the collar 504 form a whole with the collar 504 and the fixed head 502 through the crossbars 506. When the slider 503 drives the collar 504 to move, the connecting rod 505 deflects at an angle, thereby driving the crossbar 506 away from or towards the fixed head 502. The threaded rod 501 is used to increase or decrease the distance between the transverse ends of the clamping rods 507, thereby adapting to the clamping and positioning of pins of different sizes. These rods are respectively located on the front and rear ends of the crossbar 506. The connecting rods 505 on the left and right sides are symmetrically connected to the fixed head 502 and the collar 504 respectively at the ends away from the crossbar 506. The end of the crossbar 506 near the pin is connected to the clamping rod 507, which abuts against the outer circumference of the pin. The clamping rod 507 is L-shaped, with its vertical end connected to the crossbar 506 and its bottom end extending towards the center of the fixed head 502. Its transverse end abuts against the outer circumference of the pin. The transverse end of the clamping rod 507 is arc-shaped, and the arc-shaped end fits tightly against the outer circumference of the pin.The lateral end of the clamping rod 507 contacts the outer circumference of the pin and forms a clamping effect, thus fixing the pin. The arc-shaped design of the clamping rod 507 allows it to fit tightly against the outer circumference of the pin.

[0023] The crossbar 506 is flush with the end of the pin (the cut-off end) and the end of the fixing head 502 away from the threaded rod 501, preventing the clamping rod 507 from colliding with the fixing head 502. It also includes a handle connected to the end of the stop head 3 away from the slide rod 1. The handle, located at the end of the stop head 3 away from the slide rod 1, serves as the user's operating part. When the clamping device 5 clamps the pin, the operator pulls the handle to provide support for the position of the stop head 3.

[0024] In use, first rotate the slider 503, causing the collar 504 to move closer to the fixed head 502, thereby changing the angle of the connecting rod 505 and causing the crossbar 506 to move away from the threaded rod 501. Simultaneously, this increases the distance between the lateral ends of the clamping rods 507. Then, the lateral ends of the clamping rods 507 are fitted onto the outer circumference of the pin. Next, rotate the slider 503 to move the collar 504 away from the fixed head 502. As a result, the angle of the connecting rod 505 changes, causing the crossbar 506 to move closer to the threaded rod 501. Simultaneously, this decreases the distance between the lateral ends of the clamping rods 507, making the arc-shaped end on the lateral end of the clamping rod 507 fit tightly against the outer circumference of the pin. At this time, the user grips the handpiece to provide support for the stop head 3. At the same time, the user slides the hammer 2 through the operating lever. The hammer 2 collides with the stop head 3, thereby loosening and disassembling the pin.

[0025] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multifunctional pin puller device, characterized in that: The device includes a slide rod (1), a hammer (2), a stop (3), a limiting head (4), and a clamping device (5). The slide rod (1) is connected to the limiting head (4) on one side, and the end away from the limiting head (4) is connected to the stop (3). The hammer (2) is provided between the stop (3) and the limiting head (4), and is sleeved on the slide rod (1) and slidably fitted to the slide rod (1). The end of the limiting head (4) away from the slide rod (1) is connected to the clamping device (5), and the clamping device (5) is connected to a pin. The clamping device (5) includes a threaded rod (501), a fixed head (502), a slider (503), a collar (504), a connecting rod (505), a crossbar (506), and a clamping rod (507). One end of the threaded rod (501) is connected to the limiting head (4) and is coaxially arranged with the slider (1). The other end of the threaded rod (501) is connected to the fixed head (502) at the threaded end. The threaded rod (501) is provided with a slider (503), which slides and engages with the threaded rod (501). The internal thread of the slider (503) and the external thread of the threaded rod (501) are used in conjunction with each other. The outer circumference of the slider (503) is concave, and a collar (504) is fitted inside the groove. Several crossbars (506) are evenly arranged at an angle on the outer circumference of the collar (504). The left and right ends of the crossbars (506) are symmetrical and are respectively hinged to a pair of connecting rods (505), which are respectively set on the front and rear ends of the crossbars (506). The ends of the connecting rods (505) on the left and right sides away from the crossbars (506) are symmetrical and are respectively hinged to the fixed head (502) and the collar (504). The end of the crossbar (506) near the pin is connected to a clamping rod (507), and the clamping rod (507) abuts against the outer circumference of the pin.

2. The multifunctional pin puller device according to claim 1, characterized in that: The clamping rod (507) is L-shaped. The top of the vertical end of the clamping rod (507) is connected to the horizontal rod (506), the bottom of the vertical end extends toward the center of the fixing head (502), and the horizontal end abuts against the outer circumference of the pin.

3. The multifunctional pin puller device according to claim 2, characterized in that: The lateral end of the clamping rod (507) is arc-shaped and contacts the outer circumference of the pin, with the arc-shaped end closely fitting the outer circumference of the pin.

4. The multifunctional pin puller device according to claim 1, characterized in that: The contact end of the collar (504) and the slider (503) is connected to a bearing seat.

5. The multifunctional pin puller device according to claim 1, characterized in that: The crossbar (506) is located at one end of the pin and is flush with the end of the fixed head (502) away from the threaded rod (501).

6. The multifunctional pin puller device according to claim 1, characterized in that: It also includes a hand-held part, which is connected to the end of the stop (3) away from the slide bar (1).

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