A locking pin pry bar tool

Abstract

This utility model relates to the field of pry bar tools, specifically to a locking pin pry bar tool, including a pry bar with a mounting plate at one end. The mounting plate has a first pawl and a second pawl that moves relative to the first pawl. A support rod is located below the mounting plate. The first pawl includes an arc-shaped portion, and the second pawl includes an arc-shaped portion. A notch area matching the locking pin is formed between the first and second arc-shaped portions. The locking pin pry bar tool provided by this utility model achieves the gripping of the locking pin by moving the second pawl closer to the first pawl. Using the support rod as a fulcrum, pressing the pry bar generates leverage to pull the locking pin axially. After the first and second arc-shaped portions clamp the locking pin, the locking pin can be rotated to unlock it. Therefore, this utility model achieves the pulling and rotation of the locking pin with a single tool, making operation simple.

Description

Technical Field

[0001] This utility model relates to the field of pry bar tools, specifically to a locking pin pry bar tool. Background Technology

[0002] Currently, most domestic underwater grab beam systems employ the following method: two hook-shaped structures with inclined surfaces are installed at the top of the underwater gate. Two swingable lifting rings are positioned at corresponding locations on the grab beam. As the grab beam descends, a guide device causes the two lifting rings to fall above the hook-shaped structures. The grab beam continues to descend, and due to the inclined surfaces of the hook-shaped structures, the lifting rings gradually swing horizontally. When the grab beam reaches a set position, the lifting rings reach the edge of the inclined surfaces and continue descending. Under gravity, the lifting rings detach from the inclined surfaces and fall into the hook-shaped structures, lifting the grab beam and thus raising the gate. During the gate opening and closing process, a locking pin is inserted into the sleeve mounting hole and rotated. Mechanical limiting mechanisms, such as springs and ball bearings, then ensure the locking pin is locked (anti-movement) and unlocked (removable) by rotating 90°, thus switching between locked (anti-movement) and unlocked (removable) states. This is the core control for the gate grab hooks and their release. Therefore, during the axial removal of the locking pin, rotation is also required to unlock or lock it.

[0003] Due to wear and tear, and the entry of impurities (such as silt and microorganisms) into the sleeve, rust and impurity accumulation occur between the inner wall of the sleeve and the locking pin, increasing frictional resistance and making it difficult to easily pull the locking pin out of the sleeve. A pry bar is actually used to remove it. However, existing pry bars, utilizing the lever principle, can only provide axial pulling force and cannot simultaneously rotate the locking pin. Pliers must be used to grip and rotate the locking pin to unlock or lock it, increasing the complexity of the operation due to tool switching. Summary of the Invention

[0004] To address the problem that existing pry bar tools, which utilize the lever principle, can only provide axial pulling force and cannot simultaneously achieve the rotation of the locking pin, requiring the additional use of pliers for rotation to unlock or lock, and increasing operational complexity through tool switching, this utility model proposes a locking pin pry bar tool. By moving the second chuck closer to the first chuck, the locking pin is grasped. Using the support rod as a fulcrum, pressing the pry bar generates leverage force to pull out the locking pin, while also allowing the locking pin to rotate. The tool is easy to operate and suitable for the rotation and pulling out of the locking pin of the gate grab beam in water conservancy projects.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A locking pin pry tool includes a pry bar with a mounting plate at one end. The mounting plate has a first pawl and a second pawl that moves relative to the first pawl. A support rod is located below the mounting plate. The first pawl includes an arc-shaped portion, and the second pawl includes an arc-shaped portion. A notch area matching the locking pin is formed between the first and second arc-shaped portions. This invention enables the removal and unlocking of the locking pin using a single tool, making operation simple.

[0007] Furthermore, the mounting plate has a rectangular groove along its length, and an adjustment assembly for driving the second chuck to move is also provided on the mounting plate. The adjustment assembly includes a lead screw and a slider. The two ends of the lead screw are rotatably connected to the inner wall of the groove, and the slider is threaded onto the lead screw. A baffle is provided at the top of the slider. When the lead screw rotates, the slider moves along the groove, causing the second chuck to move closer to the first chuck until the gap between the first and second arc-shaped portions matches the diameter of the locking pin. Similarly, rotating the lead screw in the opposite direction widens the gap between the first and second chucks to release the locking pin.

[0008] Furthermore, one end of the lead screw extends out of the mounting plate and is connected to a knob. Rotating the knob causes the lead screw to rotate.

[0009] Furthermore, the baffle is a circular plate, and the diameter of the baffle is greater than the width of the groove.

[0010] Furthermore, the first claw also includes a first mounting part, which is vertically fixed on the mounting plate, and the first arc-shaped part is integrally disposed on the top of the first mounting part.

[0011] Furthermore, the second claw also includes a second mounting part, which is vertically fixed to the baffle, and the second arc-shaped part is integrally disposed on the top of the second mounting part.

[0012] Furthermore, the support rod is vertically mounted on the pry bar. The support rod is hollow, and one end of the support rod is connected to a top head. The top head includes a connecting post and a boss, which are connected by a cylinder. The connecting post is threaded to the support rod, and the boss has a hemispherical structure. The hemispherical boss of the support rod's top head is pressed against the edge of the gate to form a lever system, and pressing the pry bar generates leverage force.

[0013] Furthermore, rubber pads are provided on the inner arc surfaces of both the first and second arc-shaped portions.

[0014] Furthermore, the pry bar is a hollow rod, and a second connecting post is provided on the lower side of one side of the mounting plate, the second connecting post being threadedly connected to the pry bar. The support rod and the pry bar are detachable, facilitating minor repairs later.

[0015] The beneficial effects of this utility model through the above technical solution are as follows:

[0016] The locking pin pry tool provided by this utility model allows for the gripping and release of the locking pin by moving the second chuck closer to or further away from the first chuck. Specifically, using a support rod as a fulcrum, the first and second chucks simultaneously press against the pin cap at one end of the locking pin, generating leverage to pull the locking pin axially. Furthermore, the arc-shaped portion one on the first chuck and the arc-shaped portion two on the second chuck clamp the locking pin, allowing it to be rotated to unlock or lock. Therefore, this utility model enables the pulling and rotation of the locking pin with a single tool, simplifying operation and changing the complex operation of existing methods that require a pry bar for axial pulling and pliers for rotation. It is suitable for the rotation and pulling of locking pins on gate grab beams in water conservancy projects. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a locking pin pry bar tool according to the present invention;

[0018] Figure 2 This is a schematic diagram of the first and second chucks in a locking pin pry tool according to this utility model;

[0019] Figure 3 This utility model relates to a locking pin pry bar tool. Figure 2 A schematic diagram of direction A in the middle;

[0020] Figure 4 This is a schematic diagram of the slider and baffle in a locking pin pry tool according to this utility model;

[0021] Figure 5 This is a schematic diagram of the pry bar and support rod in a locking pin pry tool according to this utility model;

[0022] Figure 6 This is a schematic diagram illustrating the application state of a locking pin pry bar tool according to this utility model.

[0023] The numbers in the attached diagram are:

[0024] 1. Pry bar; 2. Mounting plate; 3. Claw 1; 301. Arc-shaped part 1; 302. Mounting part 1; 4. Claw 2; 401. Arc-shaped part 2; 402. Mounting part 2; 5. Support rod; 6. Slide groove; 7. Lead screw; 8. Slider; 9. Baffle; 10. Knob; 11. Top head; 1101. Connecting post 1; 1102. Boss; 12. Rubber pad; 13. Connecting post 2; 14. Locking pin. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0026] like Figures 1-6As shown, this embodiment provides a locking pin pry tool, including a pry bar 1. One end of the pry bar 1 is provided with a mounting plate 2. The mounting plate 2 is provided with a first pawl 3 and a second pawl 4 that moves relative to the first pawl 3. A support rod 5 is provided below the mounting plate 2. The first pawl 3 includes an arc-shaped portion 301, and the second pawl 4 includes an arc-shaped portion 401. A notch area matching the locking pin 14 is formed between the first arc-shaped portion 301 and the second arc-shaped portion 401.

[0027] The locking pin pry tool provided by this utility model allows for the gripping and release of the locking pin by moving the second pawl 4 closer to or further away from the first pawl 3. Specifically, using the support rod 5 as a fulcrum, the first pawl 3 and the second pawl 4 simultaneously press against the pin cap at one end of the locking pin 14. Pressing the pry bar 1 generates leverage force to pull the locking pin 14 axially out. Furthermore, after the arc-shaped portion 301 on the first pawl 3 and the arc-shaped portion 401 on the second pawl 4 clamp the locking pin 14, the locking pin 14 can be rotated to achieve unlocking or locking. Therefore, this utility model enables the pulling out and rotation of the locking pin with a single tool, making operation simple.

[0028] Please refer to this again. Figure 2 and Figure 3 The mounting plate 2 has a rectangular groove 6 along its length. The mounting plate 2 also has an adjustment assembly for driving the movement of the second pawl 4. The adjustment assembly includes a lead screw 7 and a slider 8. The two ends of the lead screw 7 are rotatably connected to the inner wall of the groove 6. The slider 8 is threaded onto the lead screw 7, and a baffle 9 is provided at the top of the slider. When the lead screw 7 rotates, the slider 8 moves along the groove 6, causing the second pawl 4 to move closer to the first pawl 3 until the gap between the first arc-shaped portion 301 and the second arc-shaped portion 401 matches the diameter of the locking pin 14. Similarly, rotating the lead screw 7 in the opposite direction widens the gap between the first pawl 3 and the second pawl 4 to release the locking pin.

[0029] Furthermore, one end of the lead screw 7 extends out of the mounting plate 2 and is connected to a knob 10. Rotating the knob 10 causes the lead screw 7 to rotate. It should be noted that when the lead screw 7 stops rotating, the slider 8 stops moving, and when the rotational force applied to the knob 10 stops, the position of the second pawl 4 is fixed.

[0030] Please refer to this again. Figure 4 The baffle 9 is a circular plate with a diameter greater than the width of the slide groove 6. This larger diameter means that the baffle 9 has a larger contact area on both sides of the slide groove 6, which helps to distribute the leverage force applied by the pry bar 1. Therefore, the baffle 9 serves to disperse the impact of the leverage force on the slider 8, thereby protecting the slider 8 and the lead screw 7.

[0031] In this example, the claw 3 further includes a mounting part 302, which is vertically fixed to the mounting plate 2. The arc-shaped part 301 is integrally disposed on the top of the mounting part 302. The mounting part 302 is vertically fixed to the mounting plate 2 by welding or bolts.

[0032] In this embodiment, the second claw 4 further includes a second mounting part 402, which is vertically fixed to the baffle 9. The second arc-shaped part 401 is integrally disposed on the top of the second mounting part 402. The second mounting part 402 is vertically fixed to the baffle 9 by welding or bolts, so that the second claw 4 and the slider 8 can move synchronously.

[0033] In this invention, the support rod 5 is vertically mounted on the pry bar 1. The support rod 5 is a hollow rod, and one end of the support rod 5 is connected to a top head 11. The top head 11 includes a connecting post 1101 and a boss 1102. The connecting post 1101 and the boss 1102 are connected by a cylinder. The connecting post 1101 is threaded to the support rod 5, and the boss 1102 has a hemispherical structure. In use, the hemispherical boss 1102 of the top head 11 of the support rod 5 is pressed against the edge of the gate to form a lever system, and pressing the pry bar 1 generates a lever force.

[0034] It is worth mentioning that rubber pads 12 are provided on the inner arc surfaces of both the first arc portion 301 and the second arc portion 401. The rubber pads 12 on the first arc portion 301 and the second arc portion 401 are attached to the locking pin surface, and static friction is used to achieve damage-free clamping.

[0035] Please refer to this again. Figure 5 The pry bar 1 is a hollow bar, and a connecting post 13 is provided on the lower side of one side of the mounting plate 2. The connecting post 13 is threadedly connected to the pry bar 1. The support rod 5 and the top head 11 are detachable for easy replacement later.

[0036] The working principle of this utility model is as follows:

[0037] In use, rotating knob 10 drives screw 7 to rotate, slider 8 moves along groove 6, causing pawl 2 4 to move closer to pawl 1 3 until the notch area between arc-shaped part 1 301 and arc-shaped part 2 401 matches the diameter of the locking pin. Please refer to the above instructions again. Figure 6The hemispherical boss 1102 of the top 11 of the support rod 5 acts as a fulcrum against the edge of the gate. Simultaneously, the first pawl 3 and the second pawl 4 abut against the pin cap on the locking pin 14. Pressing the pry bar 1 generates leverage force to pull the locking pin 14 axially out. Furthermore, the arc-shaped portion 301 on the first pawl 3 and the arc-shaped portion 401 on the second pawl 4 clamp the locking pin 14, allowing the locking pin 14 to rotate, thus unlocking or locking. This method is suitable for the rotation and removal of the locking pin of the gate grab beam in hydraulic engineering projects. Similarly, rotating the knob 10 in the opposite direction widens the gap between the first pawl 3 and the second pawl 4 to release the locking pin 14, facilitating the removal of the tool.

[0038] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A lock pin crowbar tool comprising a crowbar (1), characterized in that, One end of the pry bar (1) is provided with a mounting plate (2), and the mounting plate (2) is provided with a first pawl (3) and a second pawl (4) that moves relative to the first pawl (3). A support rod (5) is provided below the mounting plate (2). The first pawl (3) includes an arc-shaped part (301), and the second pawl (4) includes an arc-shaped part (401). A notch area matching the locking pin (14) is formed between the first arc-shaped part (301) and the second arc-shaped part (401).

2. The locking pin pry bar tool according to claim 1, characterized in that, The mounting plate (2) has a rectangular groove (6) along its length direction. The mounting plate (2) is also provided with an adjustment component for driving the second pawl (4) to move. The adjustment component includes a lead screw (7) and a slider (8). The two ends of the lead screw (7) are rotatably connected to the inner wall of the groove (6). The slider (8) is threaded onto the lead screw (7). A baffle (9) is provided at the top of the slider.

3. A locking pin pry bar tool according to claim 2, characterized in that, One end of the lead screw (7) extends out to the outside of the mounting plate (2) and is connected to a knob (10).

4. A locking pin pry bar tool according to claim 2, characterized in that, The baffle (9) is a circular plate, and the diameter of the baffle (9) is greater than the width of the groove (6).

5. A locking pin pry bar tool according to claim 1, characterized in that, The first claw (3) also includes a first mounting part (302), which is vertically fixed on the mounting plate (2), and the first arc-shaped part (301) is integrally disposed on the top of the first mounting part (302).

6. A locking pin pry bar tool according to claim 2, characterized in that, The second claw (4) also includes a second mounting part (402), which is vertically fixed on the baffle (9), and the second arc-shaped part (401) is integrally disposed on the top of the second mounting part (402).

7. A locking pin pry bar tool according to claim 1, characterized in that, The support rod (5) is vertically mounted on the pry bar (1). The support rod (5) is a hollow rod. One end of the support rod (5) is connected to a top head (11). The top head (11) includes a connecting post (1101) and a boss (1102). The connecting post (1101) and the boss (1102) are connected by a cylinder. The connecting post (1101) is threaded to the support rod (5). The boss (1102) is a hemispherical structure.

8. A locking pin pry bar tool according to claim 1, characterized in that, Rubber pads (12) are provided on the inner arc surfaces of both the first arc part (301) and the second arc part (401).

9. A locking pin pry bar tool according to claim 1, characterized in that, The pry bar (1) is a hollow bar, and a connecting post (13) is provided on the lower side of one side of the mounting plate (2). The connecting post (13) is threadedly connected to the pry bar (1).

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