Self-adaptive gravity sensing type pipe clamping pliers

Abstract

The utility model relates to a pair of self-adaptive gravity induction type pipe holding forceps, which comprises an upper forceps rod, a lower forceps rod, a screw rod and a pull basket bolt, the upper forceps rod is hinged with the lower forceps rod, the parts of the upper forceps rod and the lower forceps rod, which are positioned at the front end of a hinge point, are combined into a forceps mouth, the part of the upper forceps rod, which is positioned at the rear end of the hinge point, is a sleeve, and a sliding block is arranged in the sleeve in a sliding manner; the lead screw is inserted into the sleeve and connected to the sliding block, an adjusting nut is arranged on the lead screw and abuts against the top of the sleeve from the outer side, an opening is vertically formed in the side face of the sleeve, one end of the pull basket bolt penetrates through the opening to be hinged to the sliding block, and the other end of the pull basket bolt is hinged to the portion, located at the rear end of the hinge point, of the lower clamp rod. The upper clamp rod and the lower clamp rod rotate around the hinge point to form the clamp mouth to clamp a pipe, the larger the mass of the pipe is, the larger the applied clamping force is, the firmer the clamp mouth clamps, and therefore it is guaranteed that the pipe is clamped firmly through the self-adaptive gravity; and meanwhile, the opening size of the clamp mouth can be adjusted through rough adjustment and fine adjustment, and the use of pipes with different diameters is met.

Description

Technical Field

[0001] This utility model belongs to the field of pipe wrench technology, and specifically relates to an adaptive gravity-sensing pipe clamp. Background Technology

[0002] In pipe processing and handling operations, the core requirements for tools used for clamping and transferring pipes focus on ease of operation, clamping strength, and adaptability. Currently used pipe wrenches are based on a double-bar hinge lever mechanism, where the opening and closing of the jaws is achieved by the rotation of two bars around the hinge. This clamping method requires external force applied by both hands to complete the clamping action. However, this traditional pipe wrench has several problems in practical applications. On the one hand, the two-handed operation mode increases the complexity of the operation, which is very inconvenient when working alone or when other operations need to be performed simultaneously, reducing operational flexibility and efficiency. On the other hand, the clamping force is entirely determined by the force applied manually, making it difficult to ensure clamping stability. Moreover, if the force applied by the hands changes during operation, the clamping may easily become loose. Furthermore, the jaw adjustment range of traditional pipe wrenches is limited; for pipes of different diameters, different sizes of pipe wrenches are often required, resulting in poor adaptability. In addition, during handling, factors such as vibration may cause the pipe to fall due to insecure clamping, posing a safety hazard. Utility Model Content

[0003] In view of this, the purpose of this utility model is to address the shortcomings of the existing technology by providing an adaptive gravity-sensing pipe clamp that can eliminate the reliance on manual operation and complete the opening and closing of the jaws through a single lever. Furthermore, it achieves stable clamping by using gravity sensing to meet the actual needs of pipe processing and handling.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The adaptive gravity-sensing pipe clamp includes an upper clamp bar, a lower clamp bar, a lead screw, and a pull basket bolt. The upper clamp bar and the lower clamp bar are hinged together. The parts of the upper clamp bar and the lower clamp bar located at the front end of the hinge point are combined to form the jaws. The part of the upper clamp bar located at the rear end of the hinge point is a sleeve. A slider is slidably installed inside the sleeve. The lead screw is inserted into the sleeve and connected to the slider. An adjusting nut is installed on the lead screw. The adjusting nut abuts against the top of the sleeve from the outside. An opening is vertically opened on the side of the sleeve. One end of the pull basket bolt passes through the opening and is hinged to the slider. The other end of the pull basket bolt is hinged to the part of the lower clamp bar located at the rear end of the hinge point.

[0006] To better realize this utility model, the above structure is further optimized, with a protective sleeve threaded to the top of the sleeve, and the adjusting nut located inside the protective sleeve.

[0007] To better realize this utility model, the above structure is further optimized by providing a lifting ring at the top of the lead screw.

[0008] To better realize this utility model, the above structure is further optimized by making the slider and the lead screw threaded connection.

[0009] To better realize this utility model, the above structure is further optimized by providing a hinge seat on the side of the slider, and the basket bolt is hinged to the hinge seat.

[0010] To better realize this utility model, the above structure is further optimized, and the parts of the upper clamp bar and the lower clamp bar located at the front end of the hinge point are both arc-shaped structures.

[0011] Compared with the prior art, this utility model has the following advantages:

[0012] The adaptive gravity-sensing pipe clamp provided by this utility model allows the upper and lower clamp bars to rotate around the hinge point to form a jaw for clamping the pipe. The greater the mass of the pipe, the greater the clamping force applied, and the more firmly the jaw clamps, thus ensuring that the adaptive gravity firmly clamps the pipe. Moreover, it is simple to operate and has high work efficiency. At the same time, the opening size of the jaw can be adjusted by coarse and fine adjustment to meet the clamping needs of pipes with different diameters. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of the adaptive gravity-sensing pipe clamp of this utility model;

[0015] Figure 2 yes Figure 1 A magnified schematic diagram of the structure of part A in the diagram;

[0016] Figure 3 This is a schematic diagram of the slider in this utility model.

[0017] In the picture:

[0018] 1-Upper clamp bar, 101-Sleeve, 1011-Opening, 2-Lower clamp bar, 3-Screw rod, 301-Lifting eye, 4-Basket bolt, 5-Slider, 501-Hinge seat, 6-Adjusting nut, 7-Protective sleeve. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Please refer to Figures 1-3 The adaptive gravity-sensing pipe clamp provided in this application includes an upper clamp bar 1, a lower clamp bar 2, a lead screw 3, and a pull basket bolt 4. The upper clamp bar 1 and the lower clamp bar 2 are hinged together, with the hinge point located in the middle of the upper clamp bar 1. The upper clamp bar 1 and the lower clamp bar 2, located at the front end of the hinge point, are combined to form a clamping jaw for clamping the pipe. The upper clamp bar 1 and the lower clamp bar 2 on both sides of the clamping jaw have an arc-shaped structure, which can more firmly fit and wrap around the cylindrical pipe.

[0023] The upper jaw lever 1 has a sleeve 101 located at the rear end of the hinge point. A slider 5 is vertically slidable inside the sleeve 101. The slider 5 moves up and down along the inner hole of the sleeve 101. A lead screw 3 is inserted into the sleeve 101 and threadedly connected to the slider 5. Pulling the lead screw 3 will cause the slider 5 to move up and down within the inner hole of the sleeve 101. An adjusting nut 6 is provided on the lead screw 3. The size of the jaw opening can be roughly adjusted by adjusting the nut 6. The adjusting nut 6 is located at the top opening of the sleeve 101 from the outside. An opening 1011 is vertically opened on the side of the sleeve 101. One end of a pull-out bolt 4 passes through the opening 1011 and is hinged to the slider 5. The size of the jaw opening can be precisely adjusted by the pull-out bolt 4. A hinge seat 501 is provided on the side of the slider 5. The pull-out bolt 4 is hinged to the hinge seat 501. When the slider 5 moves, it will drive the pull-out bolt 4 to move together. The other end of the pull basket bolt 4 is hinged to the part of the lower clamp rod 2 located at the rear end of the hinge point. By pulling the pull basket bolt 4, the lower clamp rod 2 can be rotated around the hinge point, so that the lower clamp rod 2 and the upper clamp rod 1 come close together and clamp the pipe.

[0024] When coarse adjustment is performed, the height of the adjusting nut 6 on the lead screw 3 is adjusted, thereby controlling the height of the slider 5 below the adjusting nut 6. When the slider 5 is raised from low to high, it is subjected to a pulling force. The slider 5 pulls the lower clamp 2 around the hinge point through the pull basket bolt 4, so that the lower clamp 2 is closer to the upper clamp 1, thereby reducing the opening size of the clamp jaws. The opposite is also true. Coarse adjustment is suitable for initially adapting the approximate pipe diameter range of the pipe material.

[0025] When fine-tuning is achieved, the length of the pull basket bolt 4 is adjusted by rotating the nut on the pull basket bolt 4 to bring the connecting screws on both sides closer or further apart. This controls the angle of rotation of the lower clamp bar 2 around the hinge point, which can precisely control the size of the clamp opening. Fine-tuning is suitable for scenarios with high clamping accuracy requirements.

[0026] By using coarse and fine adjustments together, it meets the clamping requirements of pipes of different diameters, effectively prevents changes in the size of the jaws due to vibration and other factors during operation, and eliminates problems such as loose clamping or disengagement during vibration.

[0027] Furthermore, the top of the sleeve 101 is threaded with a protective sleeve 7, and the adjusting nut 6 is located inside the protective sleeve 7. This prevents accidental contact with the adjusting nut 6 under normal conditions. During coarse adjustment, the protective sleeve 7 is opened and the adjusting nut 6 is rotated. The protective sleeve 7 also serves as a handle for the operator to grip and apply force. The top of the lead screw 3 is equipped with a lifting ring 301 for easy attachment to a lifting hook.

[0028] Working principle:

[0029] During clamping, first adjust the opening size of the jaws, then place the pipe inside the jaws, and then pull the screw 3 upward. The screw 3 drives the slider 5 and the pull basket bolt 4 to move upward, while simultaneously pulling the lower clamp 2 to rotate around the hinge point, so that the lower clamp 2 and the upper clamp 1 come closer together and clamp the pipe. During the clamping process, the heavier the pipe, the greater the upward pulling force applied by the screw 3, which causes the lower clamp 2 to rotate with greater torque and close with the upper clamp 1. Finally, the self-adaptive clamping is achieved by relying on the weight of the pipe itself.

[0030] To loosen the pipe, simply place the pipe in the designated position, then move the screw 3 down, causing the slider 5 and the pull basket bolt 4 to drive the lower clamp 2 to rotate in the opposite direction around the hinge point, and the clamp jaws will open automatically.

[0031] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An adaptive gravity-sensing pipe clamp, characterized in that: The device includes an upper clamp (1), a lower clamp (2), a lead screw (3), and a pull basket bolt (4). The upper clamp (1) is hinged to the lower clamp (2). The upper clamp (1) and the lower clamp (2) are combined to form a jaw. The upper clamp (1) and the lower clamp (2) are connected to each other at the front end of the hinge point. The upper clamp (1) is connected to a sleeve (101) at the rear end of the hinge point. A slider (5) is slidably provided inside the sleeve (101). The lead screw (3) is inserted into the sleeve (101) and connected to the slider (5). An adjusting nut (6) is provided on the lead screw (3). The adjusting nut (6) abuts against the top of the sleeve (101) from the outside. An opening (1011) is vertically opened on the side of the sleeve (1011). One end of the pull basket bolt (4) passes through the opening (1011) and is hinged to the slider (5). The other end of the pull basket bolt (4) is hinged to the lower clamp (2) at the rear end of the hinge point.

2. The adaptive gravity-sensing pipe clamp according to claim 1, characterized in that: The top of the sleeve (101) is threaded with a protective sleeve (7), and the adjusting nut (6) is located inside the protective sleeve (7).

3. The adaptive gravity-sensing pipe clamp according to claim 2, characterized in that: The top of the lead screw (3) is provided with a lifting ring (301).

4. The adaptive gravity-sensing pipe clamp according to claim 1, characterized in that: The slider (5) is threadedly connected to the lead screw (3).

5. The adaptive gravity-sensing pipe clamp according to claim 4, characterized in that: The slider (5) is provided with a hinge seat (501) on its side, and the basket bolt (4) is hinged to the hinge seat (501).

6. The adaptive gravity-sensing pipe clamp according to claim 1, characterized in that: The portions of the upper clamp (1) and the lower clamp (2) located at the front end of the hinge point are both arc-shaped structures.

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