Maintenance pliers with self-locking function

Abstract

The pair of pliers with the self-locking function for maintenance comprises two pliers handles, a pull rod is connected to the middle of one of the pliers handles, an adjusting pipe is sleeved on the pull rod, a baffle ring is fixedly arranged at one end of the adjusting pipe, a ring hole is formed in the middle of the baffle ring, a connecting port is formed in the other end of the adjusting pipe, and an internal thread is arranged in the adjusting pipe. The pull rod is fixedly connected with a limiting circular plate, the limiting circular plate is provided with external threads, the other end of the adjusting pipe is connected with a connecting pipe, a connecting pipe opening is formed in the middle of the connecting pipe, the middle of the other clamp handle is connected with a telescopic spring, the telescopic spring is connected with a butt joint, and the butt joint is connected with a limiting pull plate. According to the pair of pliers with the self-locking function for maintenance, self-locking can be conveniently achieved, the plier head is automatically kept in a clamping state, and the self-locking and unlocking processes can be achieved through one-hand operation. After the pliers are self-locked, the hands holding the pliers handles can be released, and time and labor are saved. The pliers can also be used as common pliers.

Description

Technical Field

[0001] This utility model belongs to the field of pliers technology, specifically relating to pliers with a self-locking function for repair. Background Technology

[0002] When inspecting equipment and pipelines in factories with numerous pipes, it is often necessary to use pliers to clamp nuts and other objects for secure fastening, facilitating other operations. However, existing pliers require one hand to continuously grip both handles when clamping objects like nuts, leaving only one hand available for other tasks. This is extremely inconvenient when manpower is limited. Therefore, a new type of pliers is needed that can self-lock after clamping an object and maintain a clamped state even after releasing the grip. Utility Model Content

[0003] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a pair of pliers with a self-locking function for maintenance, comprising two pliers handles, one of which has a pull rod connected to the middle, an adjusting tube sleeved on the pull rod, a retaining ring fixedly provided at one end of the adjusting tube, the retaining ring having an annular hole in the middle for the pull rod to move into, the other end of the adjusting tube having a connecting port, the adjusting tube having an internal thread, the pull rod extending from the annular hole into the adjusting tube and then being fixedly connected to a limiting circular plate, the limiting circular plate having an external thread that engages with the internal thread of the adjusting tube, the diameter of the limiting circular plate being larger than the inner diameter of the annular hole, the other end of the adjusting tube being connected to a connecting tube, the connecting tube having a connecting tube opening in the middle, the other pliers handle having a telescopic spring connected to the middle, the telescopic spring being connected to a connector, the connector extending from the connecting tube opening into the adjusting tube and being connected to a limiting pull plate, the diameter of the limiting pull plate being larger than the inner diameter of the connecting tube opening.

[0004] As a preferred embodiment of the above technical solution, the connecting pipe is threadedly connected to the adjusting pipe.

[0005] As a preferred embodiment of the above technical solution, the outer side of the cross-section of the regulating tube is a regular hexagon, and a hexagonal ring plate is fixedly connected to one end of the connecting tube.

[0006] As a preferred embodiment of the above technical solution, the connecting pipe is provided with a bearing, and the connector is connected to the connecting pipe through the bearing.

[0007] As a preferred embodiment of the above technical solution, the middle part of the clamp handle is provided with a connecting shaft, a movable ring sleeve is sleeved on the connecting shaft, one end of the pull rod is fixedly connected to one of the movable ring sleeves, and one end of the telescopic spring is fixedly connected to the other movable ring sleeve.

[0008] The beneficial effects of this utility model are: the repair pliers with a self-locking function of this utility model can easily achieve self-locking, so that the pliers head automatically maintains a clamping state, and the self-locking and unlocking process can be carried out with one hand. After the pliers self-locks, the hand holding the pliers handle can be released, saving time and effort. The pliers can also be used as ordinary pliers. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model. Detailed Implementation

[0011] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0012] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are 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," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0013] In the description of this utility model, it should 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; and they can refer to the internal connection of 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.

[0014] like Figure 1-2As shown, a repair pliers with a self-locking function includes two pliers handles 1. One pliers handle 1 has a pull rod 2 connected to its middle. An adjusting tube 3 is fitted onto the pull rod 2. A retaining ring 4 is fixedly provided at one end of the adjusting tube 3. The retaining ring 4 has an annular hole 5 in its middle for the pull rod 2 to move into. The other end of the adjusting tube 3 has a connecting port 6. The adjusting tube 3 has internal threads. After the pull rod 2 extends into the adjusting tube 3 through the annular hole 5, a limiting circular plate 7 is fixedly connected. The limiting circular plate 7 has external threads that mate with the internal threads inside the adjusting tube 3. The diameter of the limiting circular plate 7 is larger than the inner diameter of the annular hole 5. The other end of the adjusting tube 3 is connected to a connecting tube 8. The connecting tube 8 has a connecting tube port 9 in its middle. The other pliers handle 1 has a telescopic spring 10 connected to its middle. The telescopic spring 10 is connected to a connector 12. The connector 12 extends into the adjusting tube 3 through the connecting tube port 9 and is connected to a limiting pull plate 11. The diameter of the limiting pull plate 11 is larger than the inner diameter of the connecting tube port 9. When using the pliers, hold both handles 1 with one hand simultaneously, using the pliers heads to clamp the object to be fixed. Then, rub the adjusting tube 3 with your fingers, causing it to rotate in one direction. Since the adjusting tube 3 is threadedly connected to the limiting circular plate 7, and the limiting circular plate 7 is fixed, the adjusting tube 3 is displaced, pulling the telescopic spring 10 taut, thus keeping the two handles 1 clamped. Releasing your hand at this point, the two handles 1 still remain clamped, and the pliers heads maintain the clamped state.

[0015] Furthermore, the connecting pipe 8 is threadedly connected to the adjusting pipe 3. The connecting pipe 8 extends into the adjusting pipe 3 and is threadedly connected to the adjusting pipe 3.

[0016] Furthermore, the outer side of the cross-section of the adjusting tube 3 is a regular hexagon, and one end of the connecting tube 8 is fixedly connected to a hexagonal ring plate 13. By rotating the hexagonal ring plate 13, the connecting tube 8 is driven to rotate, which facilitates the connection or disassembly of the connecting tube 8 and the adjusting tube 3. The outer side of the cross-section of the adjusting tube 3 is a regular hexagon, which facilitates the simultaneous rotation of the adjusting tube 3 by rubbing it while holding the pliers handle 1.

[0017] Furthermore, a bearing (not shown in the figure) is provided inside the connecting pipe 8, and the coupling 12 is connected to the connecting pipe 8 through the bearing. The bearing facilitates the rotation of the coupling 12 relative to the connecting pipe 8.

[0018] Furthermore, the middle part of the pliers handle 1 is provided with a connecting shaft 14, and a movable ring sleeve 15 is fitted on the connecting shaft 14. One end of the pull rod 2 is fixedly connected to one of the movable ring sleeves 15, and one end of the telescopic spring 10 is fixedly connected to the other movable ring sleeve 15. After the connecting tube 8 is disengaged from the adjusting tube 3, the movable ring sleeve 15 can be rotated, and the pliers can be restored to normal pliers use.

[0019] It is worth mentioning that the technical features of the bearings and other parts of the pliers involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control methods and spatial arrangement of these technical features can be adopted by conventional choices in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not elaborate further.

[0020] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experimentation on the basis of the prior art should be within the scope of protection defined by the claims.

Claims

1. A pair of pliers for repair with a self-locking function, comprising two plier handles, characterized in that, One of the clamp handles has a pull rod connected to its middle section, and an adjusting tube is fitted onto the pull rod. One end of the adjusting tube is fixedly equipped with a retaining ring, and the retaining ring has an annular hole in its middle section for the pull rod to move into. The other end of the adjusting tube has a connecting port, and the adjusting tube has an internal thread. After the pull rod extends into the adjusting tube through the annular hole, a limiting circular plate is fixedly connected to it. The limiting circular plate has an external thread that mates with the internal thread of the adjusting tube. The diameter of the limiting circular plate is larger than the inner diameter of the annular hole. The other end of the adjusting tube is connected to a connecting tube, and the connecting tube has a connecting tube opening in its middle section. The other clamp handle has a telescopic spring connected to its middle section, and the telescopic spring is connected to a connector. The connector extends into the adjusting tube from the connecting tube opening and is connected to a limiting pull plate. The diameter of the limiting pull plate is larger than the inner diameter of the connecting tube opening.

2. The repair pliers with self-locking function as described in claim 1, characterized in that, The connecting pipe is threadedly connected to the adjusting pipe.

3. The repair pliers with a self-locking function as described in claim 2, characterized in that, The outer side of the cross-section of the regulating tube is a regular hexagon, and a hexagonal ring plate is fixedly connected to one end of the connecting tube.

4. The repair pliers with a self-locking function as described in claim 3, characterized in that, The connecting pipe is equipped with a bearing, and the connector is connected to the connecting pipe through the bearing.

5. The repair pliers with a self-locking function as described in claim 1, characterized in that, The middle part of the clamp handle is provided with a connecting shaft, and a movable ring sleeve is fitted on the connecting shaft. One end of the pull rod is fixedly connected to one of the movable ring sleeves, and one end of the telescopic spring is fixedly connected to the other movable ring sleeve.

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