A double-end bolt removing tool for a valve core

Abstract

This utility model belongs to the field of electromagnetic valve manufacturing technology, specifically relating to a tool for disassembling a double-ended bolt of a valve core. It includes a clamping wrench, with the end of the double-ended bolt located on the outer side of the valve core forming the head. The head of the double-ended bolt is threadedly connected to a cap-shaped clamping nut. The working end of the clamping wrench has a positioning protrusion that mates with the groove of the clamping nut. The disassembly tool also includes a tightening bolt, which abuts against the tail of the double-ended bolt and prevents it from rotating. This utility model adds a tightening bolt, which secures the double-ended bolt during disassembly of the clamping nut, preventing it from rotating with the nut. Simultaneously, the positioning protrusion of the clamping wrench ensures a tight fit between the wrench and the clamping nut, providing a stable gripping force during disassembly, effectively preventing slippage and ensuring smooth disassembly.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic valve manufacturing technology, specifically relating to a double-headed bolt removal tool for valve cores. Background Technology

[0002] Solenoid valves, as an indispensable basic component in automated control systems, are widely used in many fields such as industrial production, transportation, and smart homes. The valve core, as the core component of a solenoid valve, directly affects its opening and closing accuracy, sealing effect, and service life. During the manufacturing, installation, commissioning, and maintenance of solenoid valves, the valve core often needs to be disassembled and inspected. The double-ended bolt, as a key component connecting the valve core to other parts, is crucial for the proper functioning of the valve core due to its tightness and sealing.

[0003] However, the existing double-ended bolt sealed structure design of the valve core makes disassembly difficult. Traditional disassembly tools cannot accurately apply disassembly force to the double-ended bolt, which can easily cause the bolt to slip or even damage other parts of the valve core. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a double-ended bolt removal tool for valve cores, which includes a tightening bolt. When removing the clamping nut, the tightening bolt can fix the double-ended bolt, preventing it from rotating with the clamping nut. At the same time, the positioning protrusion of the clamping wrench allows the clamping wrench to fit tightly with the clamping nut, providing a stable gripping force during disassembly, effectively preventing slippage and ensuring the smooth progress of the disassembly work.

[0005] The specific technical solution adopted in this utility model is as follows:

[0006] A tool for removing a double-ended bolt from a valve core includes a clamping wrench. The end of the double-ended bolt located on the outer side of the valve core forms the head of the double-ended bolt. The head of the double-ended bolt is threadedly connected to a cap-shaped clamping nut. The working end of the clamping wrench is provided with a positioning protrusion that engages with the groove of the clamping nut. The tool also includes a tightening bolt, which abuts against the tail of the double-ended bolt and prevents the double-ended bolt from rotating.

[0007] The clamping wrench has handles symmetrically arranged on both sides of the force-applying end, and the handles are fixedly connected to the clamping wrench.

[0008] The clamping wrench also includes a threaded sleeve and a threaded rod threadedly connected to the threaded sleeve. The threaded sleeve has a flared structure that is wider on the outside and narrower on the inside, facing the positioning protrusion. The positioning protrusion includes at least two sets of positioning units arranged in a mirror-symmetrical manner with the threaded rod as the axis. Each positioning unit includes a guide part and a positioning part. The bottom of the guide part is elastically connected to the threaded rod by means of a spring. The contact side between the guide part and the threaded sleeve has an inclined structure that matches the flared structure. The threaded sleeve moves along the threaded rod and squeezes or releases the guide part. The guide part floats relative to the threaded rod by means of a spring. The two sets of positioning parts form a concave-convex fit with the groove of the clamping nut by means of the floating of the guide part.

[0009] The threaded rod has symmetrically arranged limit grooves on both sides. The guide part of the positioning unit is located in the limit groove and has the freedom to float along the limit groove by means of a spring.

[0010] The bottom of the limiting groove is provided with an upwardly extending protrusion, the bottom of the guide part of the positioning unit is a groove that cooperates with the extending protrusion, and the spring is located between the extending protrusion and the groove of the guide part.

[0011] The threaded rod is also provided with a limiting ring, and the threaded sleeve is located between the limiting ring and the positioning protrusion. The limiting ring prevents the threaded sleeve from moving along the threaded rod.

[0012] The beneficial effects of this utility model are:

[0013] This utility model adds a tightening bolt, which can fix the double-ended bolt when disassembling the clamping nut, preventing the double-ended bolt from rotating with the clamping nut. It can also prevent the double-ended bolt from being over-tightened due to excessive force, which could lead to damage. In addition, the positioning protrusion of the clamping wrench allows the clamping wrench to fit tightly with the clamping nut, providing a stable gripping force during disassembly, effectively preventing slippage and ensuring the smooth progress of the disassembly work. Attached Figure Description

[0014] Figure 1 This is a schematic diagram showing the structure when the disassembly tool and valve core are disassembled and assembled.

[0015] Figure 2 A side view diagram of the clamping wrench;

[0016] Figure 3 A schematic diagram of the front structure of the locking wrench;

[0017] Figure 4 A schematic diagram of the structure of the positioning part of the clamping wrench when it is scaled down;

[0018] Figure 5 A schematic diagram of the structure when the positioning part of the clamping wrench is enlarged;

[0019] Figure 6 for Figure 3 An enlarged schematic diagram of part A in the middle;

[0020] Figure 7 This is a schematic diagram of the valve core structure;

[0021] In the attached diagram, 1 is a double-ended bolt, 2 is a clamping wrench, 3 is a clamping nut, 4 is a tightening bolt, 5 is a handle, 6 is a threaded sleeve, 7 is a threaded rod, 8 is a guide part, 9 is a positioning part, 10 is a spring, 11 is a limiting groove, 12 is an extension protrusion, and 13 is a limiting ring. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0023] Specific implementation, such as Figure 1 As shown, this utility model provides a tool for disassembling a double-ended bolt 1 of a valve core, including a clamping wrench 2. The end of the double-ended bolt 1 located on the outside of the valve core is formed as the head of the double-ended bolt 1. The head of the double-ended bolt 1 is threadedly connected to a cap-shaped clamping nut 3. The working end of the clamping wrench 2 is provided with a positioning protrusion that mates with the groove of the clamping nut 3. The disassembly tool also includes a tightening bolt 4, which abuts against the tail of the double-ended bolt 1 and prevents the double-ended bolt 1 from rotating.

[0024] Therefore, this utility model adds a tightening bolt 4. When the clamping nut 3 is disassembled, the tightening bolt 4 can fix the double-ended bolt 1, prevent the double-ended bolt 1 from rotating together with the clamping nut 3, and also prevent the double-ended bolt 1 from being over-tightened due to excessive force, which would cause damage.

[0025] In addition, the positioning protrusion of this utility model enables the clamping wrench 2 to fit tightly with the clamping nut 3, providing a stable gripping force during disassembly, effectively preventing slippage and ensuring the smooth progress of disassembly.

[0026] like Figure 1-2 As shown, the clamping wrench 2 has handles 5 symmetrically arranged on both sides of the force-applying end, and the handles 5 are fixedly connected to the clamping wrench 2. The handles 5 provide the operator with a comfortable and stable grip position, making it easier for the operator to apply greater disassembly force and effectively improving disassembly efficiency.

[0027] like Figure 1 and Figure 3-5As shown, the clamping wrench 2 also includes a threaded sleeve 6 and a threaded rod 7 threadedly connected to the threaded sleeve 6. The threaded sleeve 6 has a flared structure that is wider on the outside and narrower on the inside towards the positioning protrusion. The positioning protrusion includes at least two sets of positioning units that are mirror-symmetrically arranged with the threaded rod 7 as the axis. The positioning unit includes a guide part 8 and a positioning part 9. The bottom of the guide part 8 is elastically connected to the threaded rod 7 by means of a spring 10. The contact side between the guide part 8 and the threaded sleeve 6 has an inclined structure that matches the flared structure. The threaded sleeve 6 moves along the threaded rod 7 and squeezes or releases the guide part 8. The guide part 8 floats relative to the threaded rod 7 by means of the spring 10. The two sets of positioning parts 9 form a concave-convex fit with the groove of the clamping nut 3 by means of the floating of the guide part 8.

[0028] The clamping nut 3 includes four sets of grooves arranged in a ring array. These four sets of grooves are arranged in a cross shape, located at the edge of the clamping nut 3 and not connected to each other. Figure 7 As shown, this results in different groove spacings for different sizes of clamping nuts 3. Therefore, in order to be suitable for various models of clamping nuts 3, the spacing between the positioning parts 9 in this utility model is adjustable.

[0029] When the threaded sleeve 6 rotates toward the working end of the clamping wrench 2, as Figure 4 As shown, the guide portion 8 of the positioning unit gradually moves away from the inclined surface on the port side of the threaded sleeve 6. However, since the spring 10 is in a contracted state initially, it will gradually return to its original position and extend. Therefore, the guide portion 8 of the positioning unit will continuously move further away under the action of the spring 10 and always remain in contact with the inclined surface of the threaded sleeve 6. As the guide portion 8 continuously moves further away, the positioning portions 9 on both sides will also continuously move away, thereby adapting to the clamping nut 3 with a larger groove spacing, forming as shown in the figure. Figure 5 The state shown;

[0030] Similarly, when the threaded sleeve 6 rotates toward the force-applying end of the clamping wrench 2, the guide part 8 of the positioning unit will gradually move along the inward inclined surface, the spring 10 will gradually contract, and the positioning parts 9 on both sides will continuously move closer together, thereby adapting to the clamping nut 3 with a smaller groove spacing.

[0031] In use, first screw the threaded sleeve 6 to the force-applying end side to maximize the distance between the positioning parts 9 on both sides. Then, align and insert the positioning parts 9 with one pair of grooves of the clamping nut 3. Next, screw the threaded sleeve 6 towards the working end side until the positioning parts 9 on both sides completely clamp the groove sidewalls of the clamping nut 3, forming a shape as shown. Figure 1 The clamping state in the middle.

[0032] like Figure 6As shown, symmetrical limiting grooves 11 are provided on both sides of the threaded rod 7. The guide part 8 of the positioning unit is located in the limiting groove 11 and has the freedom to float along the limiting groove 11 with the help of the spring 10. By providing the limiting groove 11, the guide part 8 can be prevented from shaking during the floating process with the help of the spring 10. At the same time, when tightening the clamping nut 3, the limiting groove 11 clamps the guide part 8 of the positioning unit, which makes it convenient for the positioning part 9 of the positioning unit to apply force to the clamping nut 3.

[0033] like Figure 6 As shown, the bottom of the limiting groove 11 is provided with an upwardly extending protrusion 12, and the bottom of the guide part 8 of the positioning unit is a groove that cooperates with the extending protrusion 12. The spring 10 is located between the extending protrusion 12 and the groove of the guide part 8. Since the threaded sleeve 6 applies a lateral force to the guide part 8 during the pushing process, in order to ensure that the spring 10 maintains stable and effective elastic deformation in the longitudinal direction throughout the entire extension and retraction process, and to avoid the guide part 8 moving laterally and dislodging from the limiting groove 11, the present invention also provides an extending protrusion 12. During the pushing process of the threaded sleeve 6, the extending protrusion 12 will hinder the lateral movement of the guide part 8, thereby preventing the guide part 8 from dislodging from the limiting groove 11.

[0034] like Figure 1-2 As shown, a limiting ring 13 is also provided on the threaded rod 7. The threaded sleeve 6 is located between the limiting ring 13 and the positioning protrusion. The limiting ring 13 prevents the threaded sleeve 6 from moving along the threaded rod 7. By setting the limiting ring 13, the movement of the threaded sleeve 6 can be restricted, thereby preventing the threaded sleeve 6 from disengaging from the guide part 8, limiting the maximum extension distance of the guide part 8, and avoiding the situation where the guide part 8 disengages from the limiting groove 11.

Claims

1. A double-end bolt dismounting tool for a valve core, comprising a clamping wrench (2), a double-end bolt (1) having a head formed at an end portion outside the valve core, and a cap-shaped compression nut (3) threadedly connected to the head of the double-end bolt (1), characterized in that, The working end of the clamping wrench (2) is provided with a positioning protrusion that matches the groove of the clamping nut (3). The disassembly tool also includes a tightening bolt (4), which abuts against the tail of the double-ended bolt (1) and prevents the double-ended bolt (1) from rotating.

2. A double-ended bolt extractor tool for a valve core as defined in claim 1, wherein The clamping wrench (2) has handles (5) symmetrically arranged on both sides of the force-applying end, and the handles (5) are fixedly connected to the clamping wrench (2).

3. A double-ended bolt extractor tool for a valve core as defined in claim 1, wherein The clamping wrench (2) also includes a threaded sleeve (6) and a threaded rod (7) threadedly connected to the threaded sleeve (6). The threaded sleeve (6) has a flared structure with a wider outer side and a narrower inner side facing the positioning protrusion. The positioning protrusion includes at least two sets of positioning units arranged in a mirror symmetrical manner with the threaded rod (7) as the axis. The positioning unit includes a guide part (8) and a positioning part (9). The bottom of the guide part (8) is elastically connected to the threaded rod (7) by means of a spring (10). The contact side between the guide part (8) and the threaded sleeve (6) has an inclined structure that matches the flared structure. The threaded sleeve (6) moves along the threaded rod (7) and squeezes or releases the guide part (8). The guide part (8) floats relative to the threaded rod (7) by means of a spring. The two sets of positioning parts (9) form a concave-convex fit with the groove of the clamping nut (3) by means of the floating of the guide part (8).

4. A double-ended bolt extractor tool for a valve core as defined in claim 3, wherein The threaded rod (7) has symmetrically arranged limiting grooves (11) on both sides. The guide part (8) of the positioning unit is located in the limiting groove (11) and has the freedom to float along the limiting groove (11) by means of the spring (10).

5. A double-ended bolt removal tool for a valve core according to claim 4, characterized in that, The bottom of the limiting groove (11) is provided with an upwardly extending protrusion (12), the bottom of the guide part (8) of the positioning unit is a groove that cooperates with the extending protrusion (12), and the spring (10) is located between the extending protrusion (12) and the groove of the guide part (8).

6. A double-ended bolt extractor tool for a valve core as defined in claim 3, wherein A limiting ring (13) is also provided on the threaded rod (7). The threaded sleeve (6) is located between the limiting ring (13) and the positioning protrusion. The limiting ring (13) prevents the threaded sleeve (6) from moving along the threaded rod (7).

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