Special wrench capable of dismantling U-shaped pin

Abstract

The utility model provides a special wrench capable of dismantling a U-shaped pin, and relates to the technical field of coal mine maintenance tools, the special wrench comprises a pry bar and a pry head, the pry head is arranged at one end of the pry bar, multiple groups of notches are arranged below the pry head, the multiple groups of notches are obliquely arranged, and the sizes of the multiple groups of notches are different; a supporting edge is arranged above the prying head, the supporting edge is in a semi-arc shape, one end of the supporting edge is provided with an extending end, and the extending end protrudes out of the prying head; the U-shaped pin is clamped into the groove opening, the wrench rotates downwards with one point of the top supporting edge as a fulcrum, the pry bar is pressed downwards, then the U-shaped pin can be pulled out, the U-shaped pin is clamped in the groove opening when pulled out, the situation that the U-shaped pin bursts out to hurt people due to stress is avoided, the accident that the U-shaped pin splashes to hurt people is eradicated, and the U-shaped pin puller is safer. And the structure is simple, the cost is low, the U-shaped pin is conveniently disassembled by utilizing the lever principle, the operation procedure is simplified, and the operation efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine maintenance tools, in particular to a special wrench with a detachable U-shaped pin. Background Art

[0002] Various types of high-pressure hoses are frequently used in coal mines. The high-pressure hoses are connected by quick connectors and must be fixed with "U"-shaped pins. In daily work, inserting and removing the "U"-shaped pins usually requires tools such as pliers, screwdrivers, and wrenches.

[0003] The "U"-shaped pin is affected by the underground environment and its own product quality. It is time-consuming and laborious to remove the "U"-shaped pin. Improper operation can easily cause bumps and injuries to personnel, posing certain safety hazards and bringing great inconvenience to construction operations. Specifically, it uses a screwdriver in conjunction with pliers to apply force to remove it, which is time-consuming and labor-intensive. When removing the "U"-shaped pin, it is easy for splashing to occur, causing injuries, or improper operation can cause bumps and injuries. Therefore, the utility model proposes a special wrench for removing the U-shaped pin to solve the problems existing in the prior art. Utility Model Content

[0004] The invention relates to a special wrench for removing a U-shaped pin, wherein the U-shaped pin is inserted into a slot of the special wrench for removing a U-shaped pin, so that the wrench is rotated downward with a point on the top support edge as a fulcrum, and the U-shaped pin can be pulled out by pressing the pry bar downward. When the U-shaped pin is pulled out, it is stuck in the slot and will not burst out and injure people due to force, thereby preventing the occurrence of splashing injuries and being safer.

[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a special wrench for removing a U-shaped pin, comprising a pry bar and a pry head, wherein the pry head is provided at one end of the pry bar, and a notch is provided below the pry head, wherein the notches are provided in a plurality of groups, and the plurality of groups of notches are provided in an oblique direction, and the sizes of the plurality of groups of notches are different;

[0006] A supporting edge is provided above the prying head, and the supporting edge is in a semicircular arc shape. An extending end is provided at one end of the supporting edge, and the extending end protrudes from the prying head.

[0007] A further improvement is that a stress relief groove is provided between the extending end and the pry head, and a chamfer is provided at the connection between the pry bar and the pry head below the stress relief groove.

[0008] A further improvement is that the support edge and the pry head are integrally formed, and the pry head and the pry bar are integrally formed.

[0009] A further improvement is that the thickness of the pry head and the pry bar are both 8-10 mm, and the pry head and the pry bar are both made of chrome vanadium steel.

[0010] A further improvement is that the inner sides of the plurality of groups of notches are provided with anti-slip grooves, and the anti-slip grooves are provided in plurality of groups.

[0011] A further improvement is that the notches are adapted to the U-shaped pins, and a plurality of groups of notches of different sizes are adapted to U-shaped pins of different models.

[0012] A further improvement is that the supporting edge is used to support the joint as a fulcrum.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model allows the U-shaped pin to be inserted into the slot, so that the wrench is rotated downward with a point on the top support edge as the fulcrum, and the U-shaped pin can be pulled out by pressing the pry bar. When pulling it out, the U-shaped pin is stuck in the slot and will not burst out and injure people, thus eliminating the occurrence of splashing injuries and being safer.

[0015] 2. The utility model has a simple structure and low cost. It uses the lever principle to realize the convenient removal of the U-shaped pin, simplifies the operation process, effectively improves the operation efficiency, is compact and light, and is easy to carry.

[0016] 3. The utility model has multiple groups of notches of different sizes that are respectively matched with U-shaped pins of different types, and is suitable for installation and disassembly of various types of high-pressure pipelines, and has good promotion prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the main view of the utility model;

[0018] Figure 2 This is a schematic diagram of the operating principle of the utility model.

[0019] Among them: 1. Pry bar; 2. Pry head; 3. Notch; 4. Support edge; 5. Stress relief groove; 6. Anti-slip groove; 7. Joint; 8. U-shaped pin. DETAILED DESCRIPTION

[0020] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0021] Example 1

[0022] according to Figure 1 、 2 As shown, this embodiment provides a special wrench for removing a U-shaped pin, comprising a pry bar 1 and a pry head 2. The pry head 2 is provided at one end of the pry bar 1, and a notch 3 is provided below the pry head 2. The notches 3 are provided in multiple groups, and the multiple groups of notches 3 are arranged obliquely, and the sizes of the multiple groups of notches 3 are different.

[0023] A semi-circular support edge 4 is provided above the pry head 2. One end of the support edge 4 is provided with an extension, which protrudes from the pry head 2. During use, a U-shaped pin 8 is inserted into the notch 3. The wrench is then rotated downward using a point on the top support edge 4 as a fulcrum. The U-shaped pin 8 is then pulled out by pressing down on the pry bar 1. During removal, the U-shaped pin 8 is locked in the notch 3, preventing it from being ejected and injuring anyone. This prevents injuries from splashing out, and utilizes the principle of leverage to facilitate removal of the U-shaped pin.

[0024] A stress relief groove 5 is provided between the extension end and the pry head 2. Below the stress relief groove 5, a chamfer is provided at the connection between the pry bar 1 and the pry head 2. To prevent stress concentration in the main body of the dismantling device, which could affect its lifespan, the chamfer is provided at the connection between the pry head 1 and the pry bar 2. The stress relief groove 5 also relieves some compressive stress.

[0025] The support edge 4 is integrally formed with the pry head 2, which is in turn integrally formed with the pry bar 1. Both the pry head 2 and the pry bar 1 are 8-10 mm thick and are made of chrome-vanadium steel. Chrome-vanadium steel (Cr-V) boasts high toughness, impact resistance, and hardness, ensuring it can operate even in humid and corrosive environments.

[0026] The inner sides of the plurality of groups of notches 3 are provided with anti-skid patterns 6, and there are multiple groups of anti-skid patterns 6. The surface is provided with anti-skid patterns 6. When the surface is in contact with the U-shaped pin 8 and is clamped, the anti-skid patterns 6 play a role in increasing friction, and will not cause the situation of force bursting out and injuring people, thus preventing the occurrence of splashing injuries and making it safer.

[0027] Example 2

[0028] according to Figure 1 、 2 As shown, this embodiment provides a special wrench for removing a U-shaped pin, comprising a pry bar 1 and a pry head 2. The pry head 2 is provided at one end of the pry bar 1, and a notch 3 is provided below the pry head 2. The notches 3 are provided in multiple groups, and the multiple groups of notches 3 are arranged obliquely, and the sizes of the multiple groups of notches 3 are different.

[0029] A semi-circular support edge 4 is provided above the pry head 2. One end of the support edge 4 is provided with an extension, which protrudes from the pry head 2. During use, a U-shaped pin 8 is inserted into the notch 3. The wrench is then rotated downward using a point on the top support edge 4 as a fulcrum. The U-shaped pin 8 is then pulled out by pressing down on the pry bar 1. During removal, the U-shaped pin 8 is locked in the notch 3, preventing it from being ejected and injuring anyone. This prevents injuries from splashing out, and utilizes the principle of leverage to facilitate removal of the U-shaped pin.

[0030] The inner sides of the plurality of groups of notches 3 are provided with anti-skid patterns 6, and there are multiple groups of anti-skid patterns 6. The surface is provided with anti-skid patterns 6. When the surface is in contact with the U-shaped pin 8 and is clamped, the anti-skid patterns 6 play a role in increasing friction, and will not cause the situation of force bursting out and injuring people, thus preventing the occurrence of splashing injuries and making it safer.

[0031] The notch 3 is adapted to the U-shaped pin 8, and multiple groups of notches 3 of different sizes are adapted to different types of U-shaped pins 8. Multiple groups of notches 3 of different sizes are adapted to different types of U-shaped pins 8, which are suitable for the installation and disassembly of various types of high-pressure pipelines and have good promotion prospects. The supporting edge 4 is used to support the joint 7 as a fulcrum. When in use, the U-shaped pin 8 is inserted through the notch 3, so that the wrench rotates downward with a point on the top supporting edge 4 as the fulcrum, and the U-shaped pin 8 can be pulled out by pressing the pry bar 1. The lever principle is used to realize the convenient removal of the U-shaped pin, simplifying the operation process and effectively improving the operation efficiency.

[0032] The special wrench for removing the U-shaped pin is used to insert the U-shaped pin 8 through the notch 3. The wrench is rotated downward with a point on the top support edge 4 as a fulcrum. The U-shaped pin 8 can be pulled out by pressing the pry bar 1 downward. When pulling out, the U-shaped pin 8 is stuck in the notch 3 and will not be injured by the force. This prevents splashing and injuring people. It is safer, has a simple structure and low cost, and utilizes the lever principle to achieve convenient removal of the U-shaped pin, simplifying the operation process and effectively improving work efficiency. It is compact, light, and easy to carry. At the same time, the product has multiple sets of notches 3 of different sizes that are respectively compatible with different types of U-shaped pins 8, making it suitable for the installation and removal of various types of high-pressure pipelines and has good promotion prospects.

[0033] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A special wrench for removing a U-shaped pin, comprising a pry bar (1) and a pry head (2), characterized in that: The pry head (2) is provided at one end of the pry bar (1), and a notch (3) is provided below the pry head (2), and the notches (3) are provided in multiple groups, and the multiple groups of notches (3) are arranged obliquely, and the sizes of the multiple groups of notches (3) are different; A supporting edge (4) is provided above the pry head (2), and the supporting edge (4) is semicircular. An extension end is provided at one end of the supporting edge (4), and the extension end protrudes from the pry head (2).

2. A special wrench for removing a U-shaped pin according to claim 1, characterized in that: A stress release groove (5) is provided between the extension end and the pry head (2), and a chamfer is provided at the connection between the pry bar (1) and the pry head (2) below the stress release groove (5).

3. A special wrench for removing a U-shaped pin according to claim 1, characterized in that: The supporting edge (4) and the pry head (2) are integrally formed, and the pry head (2) and the pry bar (1) are integrally formed.

4. A special wrench for removing a U-shaped pin according to claim 3, characterized in that: The thickness of the pry head (2) and the pry bar (1) are both 8-10 mm, and the pry head (2) and the pry bar (1) are both made of chrome vanadium steel.

5. The special wrench for removing the U-shaped pin according to claim 1, characterized in that: The inner sides of the plurality of groups of notches (3) are all provided with anti-skid lines (6), and the anti-skid lines (6) are provided in a plurality of groups.

6. A special wrench for removing a U-shaped pin according to claim 1, characterized in that: The notches (3) are adapted to the U-shaped pins (8), and a plurality of groups of notches (3) of different sizes are adapted to U-shaped pins (8) of different models, respectively.

7. A special wrench for removing a U-shaped pin according to claim 6, characterized in that: The supporting edge (4) is used to support on the joint (7) as a fulcrum.

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