A gripping tool

Abstract

The present invention relates to the technical field of clamping devices, and more specifically, to a grasping tool, which includes a holding portion, a first clamping portion, a second clamping portion, and a traction mechanism. A handle is provided on the holding portion, and an opening is provided on the holding portion. The first clamping portion and the second clamping portion are oppositely arranged in the opening, and the first clamping portion and the second clamping portion are respectively hinged to the holding portion. The traction mechanism is connected to the first clamping portion to drive the first clamping portion to rotate. It can facilitate the long-term holding of a pipeline periscope by workers, without significant swinging and jitter during holding, making the suspended device more stable.

Description

Technical Field

[0001] The present invention relates to the technical field of gripper devices, and more specifically, to a gripping tool. Background Art

[0002] Pipeline periscopes are mainly applied to aspects such as the completion acceptance of municipal pipelines, the design of pipeline repair plans, the construction monitoring during pipeline repair, and the remeasurement after repair. Therefore, the acquisition and playback of internal pipeline images and the measurement of the actual position corresponding to the current image are two essential functions of such devices.

[0003] For example, the publication number: CN210573002U discloses an intelligent and automatically telescopic pipeline periscope, which includes a handheld rod and a telescopic rod that can be telescopically fitted with the handheld rod. A camera is provided at the lower end of the telescopic rod. One end of the handheld rod forms a telescopic space that allows the telescopic rod to extend into and form a telescopic fit. A guiding mechanism is provided between the outer peripheral wall of the telescopic rod and the inner peripheral wall of the handheld rod. A telescopic mechanism for the telescopic rod is provided on the handheld rod. It also includes a supporting mechanism provided on one side of the telescopic rod for supporting the telescopic rod and the handheld rod.

[0004] As in the above-mentioned published patent, when staff use it for monitoring, they generally need to hold the handheld rod and extend it into the pipeline. However, in actual survey work, there are many scenarios where the device needs to be kept in a stable position. For example, when conducting surveys in underground dark rivers, if the staff fix and control the device by hand, due to the relatively large weight of the device itself, the suspended device will swing and vibrate significantly during the process of the staff holding it forcefully, making it more difficult for the device to collect data. At the same time, the staff also need to maintain a holding posture for a long time, which requires a great deal of physical strength from the staff and is difficult to maintain a balanced state for a long time. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a gripping tool that can facilitate the staff to hold the pipeline periscope for a long time without significant swinging and vibration during holding, making the suspended device more stable.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is: a gripping tool, including a holding part, a first clamping part, a second clamping part, and a traction mechanism. A handle is provided on the holding part. An opening is provided on the holding part. The first clamping part and the second clamping part are oppositely arranged in the opening, and the first clamping part and the second clamping part are respectively hinged to the holding part. The traction mechanism is connected to the first clamping part to drive the first clamping part to rotate.

[0007] When the staff holds the pipeline periscope, they need to grasp the telescopic rod at the position of the vertical wellhead. The pipeline periscope is connected below the telescopic rod. The staff grabs the telescopic rod by using this device. The telescopic rod is placed between the first clamping part and the second clamping part, and the first clamping part is pulled and rotated by using the traction mechanism, so that the first clamping part rotates to touch the telescopic rod and applies pressure to the telescopic rod, so that the telescopic rod can be clamped by the combined frictional force of the first clamping part and the second clamping part. During the holding process, the staff's arm hangs naturally and holds the handle. Since both the first clamping part and the second clamping part are rotatably connected to the holding part, the posture of the telescopic rod grasped by the first clamping part and the second clamping part is controlled by the first clamping part and the second clamping part. Therefore, the telescopic rod can still maintain a vertical state. Even if the staff's hand shakes, the position of the telescopic rod will not change greatly, and there will be no large swing and shake. Therefore, when the staff uses it, they can hold it in a simple and comfortable posture without having to maintain a long-term force state, resulting in large swings and shakes.

[0008] Further, the traction mechanism includes a control handle and a traction rope. The control handle is hinged to the holding part. One end of the traction rope is connected to the holding handle, and the other end is connected to the first opening and closing plate. When the staff grabs the telescopic rod, they hold the handle and press the control handle. The control handle pulls the traction rope, so that the first pressing part rotates to press the telescopic rod tightly.

[0009] Further, it also includes a guiding mechanism. The guiding mechanism includes a first guiding rotating shaft and a second guiding rotating shaft. The first guiding rotating shaft is arranged at the upper part of the holding part, and the second guiding rotating shaft is arranged at the lower part of the holding part. There is a communication port on the holding part. The middle section of the traction rope is respectively wound around the first guiding shaft, the second guiding shaft and passes through the communication port. The direction of the traction rope is adjusted by the guiding mechanism to maintain the tension of the traction rope, which is convenient to be controlled by the control handle.

[0010] Further, the first clamping part includes a first mounting seat and a first clamping plate. The first clamping plate is connected to the first mounting seat. The second clamping part includes a second mounting seat and a second clamping plate. The second clamping plate is connected to the second mounting seat.

[0011] Further, a third mounting seat and a fourth mounting seat are provided inside the opening. The first mounting seat and the third mounting seat are connected by a first rotating shaft. The second mounting seat and the fourth mounting seat are connected by a second rotating shaft. A third shaft hole is provided on the third mounting seat. A fourth shaft hole is provided on the fourth mounting seat. The first mounting seat includes two relatively arranged first rotating seat arms. A first shaft hole is provided on the first rotating arm seat. The second mounting seat includes two relatively arranged second rotating seat arms. A second shaft hole is provided on the second rotating arm seat. The third mounting seat is disposed between the two first rotating seat arms and the first rotating shaft passes through the first shaft hole and the third shaft hole. The fourth mounting seat is disposed between the two second rotating seat arms and the second rotating shaft passes through the second shaft hole and the fourth shaft hole.

[0012] Further, a first opening and a second opening are provided on the side wall of the opening. The end of the first rotating shaft passes through the first opening. The end of the second rotating shaft passes through the second opening. The first rotating shaft and the second rotating shaft can be conveniently installed through the first opening and the second opening. When installing, only need to insert the first rotating shaft through the first opening on the side of the holding part. Similarly, the second rotating shaft can be inserted through the second opening on the side of the holding part when installing.

[0013] Further, a first limiting block is provided at one end of the first rotating shaft passing through the first opening. A second limiting block is provided at one end of the second rotating shaft passing through the second opening. The first limiting block is formed by bending the part of the first rotating shaft protruding from the first opening. The second limiting block is formed by bending the part of the second rotating shaft protruding from the second opening. The positions of the first rotating shaft and the second rotating shaft can be limited by the first limiting block and the second limiting block to prevent them from coming out.

[0014] Further, a reset mechanism is further included. The reset mechanism is a torsion spring sleeved on the first rotating shaft. One end of the torsion spring is connected to the first rotating seat arm, and the other end is connected to the third mounting seat. The reset mechanism can reset the first clamping part and maintain the tension of the traction rope. In the use state, the traction rope pulls the first clamping part, and the first holding part rotates and overcomes the elastic force of the torsion spring. When not in use, after canceling the acting force of the control handle, the traction acting force of the traction rope on the first clamping part disappears. The torsion spring resets under its own elastic force and drives the first clamping part to rotate reversely for reset, which is convenient for the next use. At the same time, it drives the traction rope to move, so that the control handle resets, and at the same time, the tension of the traction rope can be maintained.

[0015] Further, both the first clamping plate and the second clamping plate are arc-shaped plates, and the arc-shaped plates are provided with rubber concave-convex surfaces. The arc-shaped plates are adapted to the surface shape of the telescopic rod. When grasping the control rod, the arc-shaped surface fits on the surface of the telescopic rod, and the friction force between the arc-shaped plate and the control rod is enhanced through the rubber concave-convex surface, ensuring that the control rod can be firmly grasped.

[0016] Further, it further includes an extension arm. A plurality of bayonets are provided at the end of the grip, and a plurality of blocks are provided at the end of the extension arm. The bayonets are snap-connected to the blocks. The staff can replace and select extension arms of different lengths according to actual needs, which is convenient for holding. Moreover, the extension arm is detachably connected, and it can be disassembled when carrying, saving space and being convenient for carrying.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This device can facilitate the staff to hold the pipeline periscope for a long time, with a comfortable holding posture and no large swings and jitters, making the suspended equipment more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the whole of the present invention;

[0019] Figure 2 It is a schematic structural diagram of the holding part in the present invention;

[0020] Figure 3 It is a schematic diagram in the grasping state of the present invention.

[0021] Figure 4 It is a stress nephogram of the present invention under the grasping device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further describes the present invention in conjunction with the specific embodiments. Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, and do not represent the actual size of the product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0023] In the drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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, so the terms describing the positional relationship in the drawings are only for illustrative purposes and should not be construed as a limitation to this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] Embodiment

[0025] Such as Figure 1 、 2As shown, a gripping tool includes a holding part 10, a first clamping part, a second clamping part, and a traction mechanism. The front end of the holding part 10 is a ring structure, and the rear end is a handle 103 connected to the ring structure. Among them, the upper surface of the ring structure is a plane, and the lower surface is an inclined surface. There is an opening 100 in the ring structure, and both the first clamping part and the second clamping part are movably arranged in the opening 100.

[0026] The first clamping part includes a first mounting seat 211 and a first clamping plate 212. The first clamping plate 212 is connected to the first mounting seat 211. The second clamping part includes a second mounting seat 221 and a second clamping plate 222. The second clamping plate 222 is connected to the second mounting seat 221. The first clamping plate 212 and the second clamping plate 222 are arranged opposite to each other, and both the first clamping plate 212 and the second clamping plate 222 are arc-shaped plates. The arc-shaped plates are provided with rubber concave-convex surfaces. The arc-shaped plates are adapted to the surface shape of the telescopic rod. When grasping the control rod, the arc-shaped surface fits on the surface of the telescopic rod, and the friction between the arc-shaped plate and the control rod is enhanced through the rubber concave-convex surface, ensuring that the control rod can be firmly grasped.

[0027] Specifically, a third mounting seat 101 and a fourth mounting seat 102 are oppositely arranged on the inner wall of the opening 100. The third mounting seat 101 and the fourth mounting seat 102 are respectively fixedly connected to the inner wall of the opening 100. The first mounting seat 211 is connected to the third mounting seat 101 through a first rotating shaft 213. The second mounting seat 221 is connected to the fourth mounting seat 102 through a second rotating shaft 223. A third shaft hole is provided on the third mounting seat 101, and a fourth shaft hole is provided on the fourth mounting seat 102. The first mounting seat 211 includes two oppositely arranged first rotating seat arms, and a first shaft hole is provided on the first rotating arm seat. The second mounting seat 221 includes two oppositely arranged second rotating seat arms, and a second shaft hole is provided on the second rotating arm seat. The third mounting seat 101 is placed between the two first rotating seat arms, and the first rotating shaft 213 passes through the first shaft hole and the third shaft hole. The fourth mounting seat 102 is placed between the two second rotating seat arms, and the second rotating shaft 223 passes through the second shaft hole and the fourth shaft hole. After installation, the first mounting seat 211 rotates around the first rotating shaft 213, and the second mounting seat 221 rotates around the second rotating shaft 223.

[0028] The side wall of the opening 100 is provided with a first opening and a second opening. The end of the first rotating shaft 213 passes through the first opening, and the end of the second rotating shaft 223 passes through the second opening. The first rotating shaft 213 and the second rotating shaft 223 can be conveniently installed through the first opening and the second opening. During installation, it only needs to insert the first rotating shaft 213 through the first opening on the side of the holding part 10. Similarly, the second rotating shaft 223 can be inserted through the second opening on the side of the holding part 10 during installation.

[0029] In addition, a first limiting block 214 is provided at one end of the first rotating shaft 213 passing through the first opening, and a second limiting block 224 is provided at one end of the second rotating shaft 223 passing through the second opening. The first limiting block 214 is formed by bending the part of the first rotating shaft 213 protruding from the first opening, and the second limiting block 224 is formed by bending the part of the second rotating shaft 223 protruding from the second opening. The positions of the first rotating shaft 213 and the second rotating shaft 223 can be limited by the first limiting block 214 and the second limiting block 224 to prevent them from coming out. When installing the first rotating shaft 213 and the second rotating shaft 223, align the rotating shafts with the openings and insert them, and then use pliers to bend the protruding ends of the rotating shafts.

[0030] In this embodiment, the traction mechanism includes a traction rope 302 and a control handle 301. One end of the control handle 301 is rotatably arranged on the grip 103. Small holes are provided at the top of the first clamping plate 212 and on the control handle 301. Two ends of the traction rope 302 are respectively connected to the first clamping plate 212 and the control handle 301 through the small holes. The traction rope 302 is kept in a taut state. When pressing the control handle 301 to rotate, the traction rope 302 is driven to move, and the first clamping plate 212 is pulled through the traction rope 302, so that the first clamping plate 212 rotates, and the telescopic rod placed between the first clamping plate 212 and the second clamping plate 222 is pressed. At the same time, the second clamping part is also hinged to the holding part 10, so it can be ensured that the surface of the telescopic rod is always in close contact with the first clamping plate 212 and the second clamping plate 222, and a large contact area can be maintained between the telescopic rod and the clamping plates, so that a large frictional force exists between the telescopic rod and the clamping plates, and the telescopic rod can be stably clamped and fixed.

[0031] Particularly, in order to better control the traction rope 302, a guiding mechanism is further provided in this device. The guiding mechanism includes a first guiding rotating shaft 401 and a second guiding rotating shaft 403. The first guiding rotating shaft 401 is arranged on the upper part of the holding part 10, the second guiding rotating shaft 403 is arranged on the lower part of the holding part 10, a communication port 402 is provided on the holding part 10, and the middle section of the traction rope 302 is respectively wound around the first guiding shaft, the second guiding shaft and passes through the communication port 402. The direction of the traction rope 302 is adjusted by the guiding mechanism to maintain the tension of the traction rope 302, which is convenient for control through the control handle 301.

[0032] In addition, the device is also provided with a reset mechanism. The reset mechanism is a torsion spring sleeved on the first rotating shaft 213. One end of the torsion spring is connected to the first rotating seat arm, and the other end is connected to the third mounting seat 101. Through the reset mechanism, the first clamping part can be reset and the tension of the traction rope 302 can be maintained. In the use state, the traction rope 302 pulls the first clamping part, and the first holding part 10 rotates and overcomes the elastic force of the torsion spring. When not in use, the acting force of the control handle 301 is withdrawn, the traction acting force of the traction rope 302 on the first clamping part disappears, and the torsion spring resets under its own elastic force and drives the first clamping part to rotate reversely and reset, which is convenient for the next use. At the same time, the traction rope 302 is driven to move, so that the control handle 301 is reset, and the tension of the traction rope 302 can be maintained at the same time.

[0033] In addition, the reset mechanism can also be a spring arranged between the inner wall of the first clamping plate 212 and the opening 100. Specifically, one end of the spring is connected to the lower end wall surface of the first clamping plate 212, and the other end is connected to the inner wall of the opening 100. When being pressed, the spring is compressed. When not working, the spring resets and pushes the first clamping plate 212 to rotate reversely, so that the first clamping plate 212 is reset.

[0034] In addition, in this embodiment, in order to facilitate the staff to hold, an extension arm 50 is also added. A plurality of bayonets 104 are provided at the end of the grip 103, and a plurality of clamping blocks 501 are provided at the end of the extension arm 50. The bayonets 104 are snap-connected with the clamping blocks 501. The staff can replace and select extension arms 50 with different lengths according to actual needs, which is convenient for holding. Moreover, the extension arm 50 is detachably connected, and it can be disassembled when carrying, saving space and being convenient for carrying.

[0035] When the staff holds the pipeline periscope, it is necessary to hold the telescopic rod at the position of the vertical wellhead. The pipeline periscope is connected below the telescopic rod, as Figure 3As shown, the staff grabs the telescopic rod by using this device. The telescopic rod is placed between the first clamping plate 212 and the second clamping plate 222, and by pressing the control handle 301, the control handle 301 pulls the traction rope 302, so that the first clamping plate 212 rotates. The first clamping plate 212 is in close contact with the surface of the telescopic rod, so that the first clamping plate 212 rotates to touch the telescopic rod and applies pressure to the telescopic rod, so that the telescopic rod can be clamped by the combined frictional force of the first clamping part and the second clamping part. Among them, since both the first clamping plate 212 and the second clamping plate 222 can rotate, during the clamping process, the arm hangs naturally. The telescopic rod, the first clamping plate 212 and the second clamping plate 222 all tend to be perpendicular to the horizontal plane. The first clamping plate 212 is higher than the second clamping plate 222, and the first clamping plate 212 applies a force to the telescopic rod, so that the telescopic rod is clamped by the first clamping plate 212 and the second clamping plate 222, and under the action of the frictional force, it is ensured that the telescopic rod will not fall.

[0036] During the holding process, the staff's arm hangs naturally and holds the handle 103. Therefore, the shape of the arm is naturally relaxed and not easy to shake. Since both the first clamping part and the second clamping part are rotatably connected to the holding part 10, the posture of the telescopic rod grasped by the first clamping part and the second clamping part is controlled by the first clamping part and the second clamping part. Therefore, the telescopic rod can still maintain a vertical state. Even if the staff's hand shakes, the position of the telescopic rod will not change greatly, and there will be no large swing and shake. Therefore, when the staff uses it, they can hold it in a simple and comfortable posture without having to maintain a long-term force state, resulting in large swings and shakes. In addition, according to the stress test of the model, as Figure 4 shown, it is the stress nephogram of the device when grabbing a 50KG device. It can be seen that the load of this device is sufficient, the structure is light and reasonable, suitable for the staff to hold with one hand, and the device only extends 220 millimeters outward in the grasping working posture. Calculated with the center of the object to be grasped as the origin, the structure is short and concise.

[0037] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A gripping tool, characterized in that, It includes a holding part (10), a first clamping part, a second clamping part and a traction mechanism. A grip (103) is provided on the holding part (10). An opening (100) is provided on the holding part (10). The first clamping part and the second clamping part are oppositely arranged in the opening (100), and the first clamping part and the second clamping part are respectively hinged to the holding part (10). The traction mechanism is connected to the first clamping part to drive the first clamping part to rotate. The traction mechanism includes a control handle (301) and a traction rope (302). The control handle (301) is hinged to the holding part (10). One end of the traction rope (302) is connected to the grip handle, and the other end is connected to the first opening plate. The first clamping part includes a first mounting seat (211) and a first clamping plate (212). The first clamping plate (212) is connected to the first mounting seat (211). The second clamping part includes a second mounting seat (221) and a second clamping plate (222). The second clamping plate (222) is connected to the second mounting seat (221). A third mounting seat (101) and a fourth mounting seat (102) are provided in the opening (100). The first mounting seat (211) is connected to the third mounting seat (101) through a first rotating shaft (213). The second mounting seat (221) is connected to the fourth mounting seat (102) through a second rotating shaft (223). A third shaft hole is provided on the third mounting seat (101). A fourth shaft hole is provided on the fourth mounting seat (102). The first mounting seat (211) includes two oppositely arranged first rotating seat arms. A first shaft hole is provided on the first rotating seat arm. The second mounting seat (221) includes two oppositely arranged second rotating seat arms. A second shaft hole is provided on the second rotating seat arm. The third mounting seat (101) is placed between the two first rotating seat arms, and the first rotating shaft (213) passes through the first shaft hole and the third shaft hole. The fourth mounting seat (102) is placed between the two second rotating seat arms, and the second rotating shaft (223) passes through the second shaft hole and the fourth shaft hole. Small holes are provided at the top of the first clamping plate (212) and on the control handle (301). Both ends of the traction rope (302) are respectively connected to the first clamping plate (212) and the control handle (301) through the small holes. The traction rope (302) is kept in a taut state. When the control handle (301) is pressed and rotated, the traction rope (302) is driven to move, and the first clamping plate (212) is pulled through the traction rope (302), so that the first clamping plate (212) rotates, and the telescopic rod placed between the first clamping plate (212) and the second clamping plate 222 is pressed tightly.

2. The gripping tool according to claim 1, characterized in that, It further includes a guiding mechanism, and the guiding mechanism includes a first guiding rotating shaft (401) and a second guiding rotating shaft (403). The first guiding rotating shaft (401) is arranged at the upper part of the holding part (10), the second guiding rotating shaft (403) is arranged at the lower part of the holding part (10), a communication port (402) is arranged on the holding part (10), and the middle section of the traction rope (302) is wound around the first guiding shaft, the second guiding shaft and passes through the communication port (402).

3. A gripping tool according to claim 1, characterized in that, First openings and second openings are provided on the side wall of the opening (100), and the end of the first rotating shaft (213) passes through the first opening, and the end of the second rotating shaft (223) passes through the second opening.

4. A gripping tool according to claim 3, wherein, A first limiting block (214) is arranged at one end of the first rotating shaft (213) passing through the first opening, and a second limiting block (224) is arranged at one end of the second rotating shaft (223) passing through the second opening.

5. A grasping tool according to claim 1, characterized in that, It further includes a reset mechanism, and the reset mechanism is a torsion spring sleeved on the first rotating shaft (213). One end of the torsion spring is connected to the first rotating seat arm, and the other end is connected to the third mounting seat (101).

6. The gripping tool according to claim 1, characterized in that, Both the first clamping plate (212) and the second clamping plate (222) are arc-shaped plates, and the arc-shaped plates are provided with rubber concave-convex surfaces.

7. A gripping tool according to claim 1, wherein, It further includes an extension arm (50). A plurality of clamping openings (104) are provided at the end of the grip (103), a plurality of clamping blocks (501) are provided at the end of the extension arm (50), and the clamping openings (104) are in snap connection with the clamping blocks (501).

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