Portable adjustable instrument terminal cover screwing tool

Abstract

The utility model discloses a portable adjustable instrument terminal cover screwing tool, which belongs to the technical field of hardware tools and particularly comprises an operating rod, an operating handle is arranged at the top end of the operating rod, screwing threads are integrally arranged in the middle section of the operating rod, and a sliding sleeve and a threaded sleeve matched with the screwing threads are sleeved in the middle of the operating rod. Two opposite clamping jaws are movably mounted at the bottom end of the operating rod through a mounting head matched with a pin shaft, and a tension spring is arranged between the two clamping jaws. According to the utility model, the vertical clamping jaw design is adopted, the meter terminal cover is fixedly clamped from the vertical surface of the meter cover of the meter, the operating rod with an operation prolonging function is matched with the operating handle, the meter terminal cover can be disassembled and assembled in a narrow environment, the operation is convenient, and the whole structure is simple in design, compact in structure, easy to carry and convenient to use. The instrument panel maintenance tool is suitable for maintenance operation of instrument panels of different dimensions.

Description

Technical Field

[0001] This utility model belongs to the field of hardware tool technology, specifically relating to a portable adjustable instrument terminal cover screwing tool. Background Technology

[0002] During pipeline maintenance, the inspection and repair of instruments is an important part of the maintenance work. However, depending on the purpose of the pipeline, the specifications of the pipeline, and the installation location of the pipeline, the specifications of the instruments installed in conjunction with it will also vary.

[0003] As is well known, the dials of conventional instruments are generally quite large. To prevent non-operating personnel from easily disassembling them, the anti-slip grooves on the edges of the dials are relatively shallow. To facilitate the opening of the dial cover during maintenance, appropriate auxiliary tools are generally required. Currently, the commonly used dial opening and tightening tools are flexible wrenches, which use flexible straps or chains in conjunction with levers to perform lateral tightening operations. Although these tightening tools are convenient to operate, they require a large lateral operating space and are only suitable for instruments with relatively spacious surroundings. For instruments in densely piped locations or in situations where the space around the instrument is narrow, these flexible tightening tools offer no operating space whatsoever.

[0004] To address this, we propose a portable, adjustable instrument terminal cover screwing tool that can be used in confined spaces. Utility Model Content

[0005] The purpose of this invention is to provide a portable adjustable instrument terminal cover screwing tool to solve the above-mentioned problems existing in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A portable adjustable instrument terminal cover screwing tool includes an operating lever with an operating handle at the top and a polygonal insertion hole on the inner side of the top of the operating lever. The bottom of the operating handle is movably inserted into the insertion hole at the top of the operating lever and positioned by a pin.

[0008] Furthermore, to facilitate the screwing and unscrewing of the instrument terminal cover, a screwing thread is integrally formed in the middle section of the operating rod. A sliding sleeve and a threaded sleeve capable of threaded engagement with the screwing thread are fitted onto the middle of the operating rod. Simultaneously, two opposing grippers are movably mounted at the bottom of the operating rod via a mounting head and a pin. A tension spring is provided between the two grippers. The outer side of the gripper is designed in an arc shape, and when the two grippers are closed, their outer surfaces are flush with the outer surface of the operating rod. The two grippers are hinged to the mounting head via the pin, allowing the two grippers to rotate around the pin. The tension spring design ensures that the outer sides of the two grippers can automatically open without external force interference, providing convenience for the operator to use the tool.

[0009] Furthermore, the sliding sleeve is located at the bottom of the threaded sleeve so that the operator can smoothly push the sliding sleeve to move when turning the threaded sleeve, thereby enabling the sliding sleeve to apply pressure to the open jaws. In order to facilitate the operator to turn the threaded sleeve, an assist rod is installed on the outside of the threaded sleeve to play an anti-slip role.

[0010] Furthermore, to improve the stability of the entire tool when screwing on the instrument terminal cover, the mounting head is integrally formed with the bottom end of the operating lever, or fixed by welding. The mounting head adopts a U-shaped structure design with an arc-shaped end. The top of the gripper is provided with an annular mounting buckle located inside the mounting head. The pin shaft, in conjunction with the pre-set pin hole on the mounting head, positions the mounting buckle located inside the mounting head. The U-shaped mounting head design facilitates the fit between the ends of the two grippers and the side wall of the mounting groove on the mounting head after they are combined. This prevents the grippers from shaking and facilitates the transmission of force. The arc-shaped end design of the mounting head facilitates the rotation of the grippers around the pin shaft, preventing the mounting head from hindering the movement of the grippers.

[0011] Furthermore, the sliding sleeve includes a sleeve that is slidably fitted onto the surface of the operating rod. The top end of the sleeve is integrally formed with a clearance end whose inner diameter matches the outer diameter of the screw thread. The inner dimension of the sleeve matches the outer diameter of the operating rod. The bottom end of the sleeve is integrally formed with a trumpet-shaped conical sleeve.

[0012] Furthermore, in order to enable the sliding sleeve to automatically reset and release the pressure on the clamping jaws after the threaded sleeve is screwed upward, allowing the clamping jaws to open, a limiting groove is provided on the operating rod located between the mounting head and the screw thread, passing through the operating rod. At the same time, a limiting bracket is installed on the inner side of the clearance end on the sliding sleeve, and the limiting bracket slides and fits in the limiting groove. A reset spring with its top end abutting against the bottom end of the limiting bracket is vertically installed in the middle of the limiting groove.

[0013] Furthermore, in order to enable the gripper to effectively clamp the edge of the instrument's terminal cover, grippers are integrally formed at the ends of both grippers, and vertical anti-slip grooves are provided on the inner side of the grippers. At the same time, in order to adapt to different types of instrument terminal covers and ensure the stability of the gripper's clamping of the terminal cover, the operator can add a rubber pad to the inner side of the gripper to increase the stability of the gripper by using the elasticity of the rubber pad.

[0014] Beneficial effects:

[0015] This utility model adopts a vertical gripper design, which fixes and clamps the instrument terminal cover from the vertical plane of the instrument cover. With the use of the operating rod with the extended operation function, in conjunction with the operating handle, the instrument terminal cover can be disassembled and installed in narrow environments. The operation is convenient, and the whole structure is simple, compact and easy to carry. It can be used for maintenance work on instrument panels of different sizes and specifications. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of a half-section of the present invention;

[0018] Figure 3 This is a schematic diagram of the disassembled structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 .

[0020] In the diagram: 1. Operating lever; 2. Operating handle; 3. Tightening thread; 4. Threaded sleeve; 401. Assisting rod; 5. Sliding sleeve; 501. Sleeve; 502. Conical sleeve; 503. Clearance end; 504. Limiting bracket; 6. Gripper; 601. Handle; 7. Tension spring; 8. Pin; 9. Return spring; 10. Pin shaft; 11. Mounting head; 12. Limiting groove. Detailed Implementation

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0022] Example:

[0023] Current tools for opening instrument terminal covers require significant lateral operating space, making them suitable only for instruments with ample surrounding space. For instruments in densely piped locations or in confined spaces, these flexible screw-on tools offer no room for maneuver. We propose a portable, adjustable instrument terminal cover screw-on tool suitable for use in confined spaces. The specific solution is as follows:

[0024] like Figure 1-4 As shown, this embodiment provides a portable adjustable instrument terminal cover screwing tool, including an operating lever 1. The top of the operating lever 1 is provided with an operating handle 2. The inner side of the top of the operating lever 1 is provided with a polygonal insertion hole. The bottom of the operating handle 2 is movably inserted into the insertion hole at the top of the operating lever 1 and positioned by a pin 8. The operator can flexibly replace different types of operating handles 2 (including but not limited to long handles, short handles, disc handles and steering wheel handles) according to actual practical needs, so that the tool can adapt to different operators and operating environments.

[0025] To enable the screwing and unscrewing of the instrument terminal cover, a screwing thread 3 is integrally provided in the middle section of the operating lever 1. A sliding sleeve 5 and a threaded sleeve 4 that can engage with the screwing thread 3 are fitted onto the middle of the operating lever 1. At the same time, two opposing grippers 6 are movably mounted at the bottom of the operating lever 1 via a mounting head 11 and a pin 10. A tension spring 7 is provided between the two grippers 6. The outer side of the gripper 601 is designed in an arc shape, and when the two grippers 601 are closed, their outer surfaces are flush with the outer surface of the operating lever 1. The two grippers 6 are hinged to the mounting head 11 via the pin 10, allowing the two grippers 6 to rotate around the pin 10. The tension spring 7 ensures that the outer sides of the two grippers 6 can automatically open without external interference, providing convenience for the operator to use the tool.

[0026] When using this tool, the operator first needs to screw the threaded sleeve 4 onto the upper end of the screwing thread 3, move the sliding sleeve 5 upward so that the lower end of the sliding sleeve 5 is disengaged from the outside of the clamping jaw 6, so that the clamping jaw 6 opens under the action of the tension spring 7. Then, the operator puts the opened clamping jaw 6 onto the terminal cover of the instrument, and by screwing the threaded sleeve 3, the threaded sleeve 4 moves downward, thereby pushing the sliding sleeve 5 downward, applying inward squeezing force to the opened clamping jaw 6, so that the two relatively open clamping jaws 6 close together and firmly clamp the outer edge of the instrument terminal cover. Finally, the operator screws the operating handle 2, so that the operating lever 1 drives the clamping jaw 6 to rotate, and finally performs the screwing and disassembly operation of the instrument terminal cover.

[0027] The sliding sleeve 5 is located at the bottom of the threaded sleeve 4 so that the operator can smoothly push the sliding sleeve 5 to move when turning the threaded sleeve 3, thereby enabling the sliding sleeve 5 to apply pressure to the open gripper 6. In order to facilitate the operator to turn the threaded sleeve 3, an assist rod 401 is installed on the outside of the threaded sleeve 4 to play an anti-slip role.

[0028] To improve the stability of the tool when screwing on the instrument terminal cover, the mounting head 11 is integrally formed with the bottom end of the operating lever 1, or fixed by welding. The mounting head 11 adopts a U-shaped structure design, and its end is designed with an arc. The top of the gripper 6 is provided with an annular mounting buckle, which is located inside the mounting head 11. The pin 10 cooperates with the pre-set pin hole on the mounting head 11 to position the mounting buckle located inside the mounting head 11. The U-shaped design of the mounting head 11 is conducive to the end of the two grippers 6 being able to fit against the side wall of the mounting groove on the mounting head 11 after they are combined. On the one hand, it can prevent the grippers 6 from shaking, and on the other hand, it is conducive to the transmission of force. The arc-shaped end design of the mounting head 11 is conducive to the grippers 6 rotating around the pin 10, and prevents the mounting head 11 from causing movement obstruction to the grippers 6.

[0029] The sliding sleeve 5 includes a sleeve 501 that is slidably fitted onto the surface of the operating rod 1. The top end of the sleeve 501 is integrally formed with an clearance end 503 whose inner diameter is adapted to the outer diameter of the screw thread 3. The inner dimension of the sleeve 501 is adapted to the outer diameter of the operating rod 1. The bottom end of the sleeve 501 is integrally formed with a trumpet-shaped conical sleeve 502.

[0030] In order to allow the sliding sleeve 5 to automatically reset and release the pressure on the clamping jaw 6 after the threaded sleeve 4 is screwed upward, so that the clamping jaw 6 opens, a limiting groove 12 is provided on the operating rod 1 located between the mounting head 11 and the screw thread 3, which passes through the operating rod 1. At the same time, a limiting bracket 504 is installed inside the clearance end 503 on the sliding sleeve 5. The limiting bracket 504 slides and fits in the limiting groove 12. A reset spring 9 is vertically installed in the middle of the limiting groove 12, with its top end abutting against the bottom end of the limiting bracket 504.

[0031] In order to enable the gripper 601 to effectively clamp the edge of the instrument terminal cover, grippers 601 are integrally formed at the ends of both jaws 6, and vertical anti-slip textures are provided on the inner side of the gripper 601. At the same time, in order to adapt to the terminal covers of different types of instruments and ensure the stability of the gripper 6 in clamping the terminal cover, the operator can add a rubber pad to the inner side of the gripper 601 and use the elasticity of the rubber pad to increase the stability of the gripper 6.

[0032] It should be further noted that, in order to ensure sufficient strength of the entire tool, the operating handle 2, operating lever 1, gripper 6, threaded sleeve 4 and sliding sleeve 5 are all made of metal, preferably 304 stainless steel.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A portable adjustable instrument terminal cover screwing tool, characterized in that, The device includes an operating lever (1), with an operating handle (2) at the top. The middle section of the operating lever (1) is integrally provided with a screw thread (3), and a sliding sleeve (5) and a threaded sleeve (4) that mates with the screw thread (3) are fitted in the middle of the operating lever (1). The bottom end of the operating lever (1) is movably mounted with two opposing jaws (6) through a mounting head (11) and a pin (10). A tension spring (7) is provided between the two jaws (6).

2. The portable adjustable instrument terminal cover screwing tool according to claim 1, characterized in that, The top inner side of the operating lever (1) is provided with a polygonal insertion hole, and the bottom of the operating handle (2) is movably inserted into the insertion hole at the top of the operating lever (1) and positioned by a pin (8).

3. The portable adjustable instrument terminal cover screwing tool according to claim 1, characterized in that, The sliding sleeve (5) is located at the bottom of the threaded sleeve (4), and an assist rod (401) is installed on the outside of the threaded sleeve (4).

4. A portable adjustable instrument terminal cover screwing tool according to claim 1, characterized in that, The mounting head (11) is integrally formed with the bottom end of the operating rod (1), and the mounting head (11) has a U-shaped structure design, with the end of the mounting head (11) having a rounded arc design.

5. A portable adjustable instrument terminal cover screwing tool according to claim 1, characterized in that, The top of the gripper (6) is provided with an annular mounting buckle, which is located inside the mounting head (11). The pin (10) cooperates with the pre-set pin hole on the mounting head (11) to position the mounting buckle located inside the mounting head (11).

6. A portable adjustable instrument terminal cover screwing tool according to claim 3, characterized in that, The sliding sleeve (5) includes a sleeve (501) that is slidably fitted onto the surface of the operating rod (1). The top end of the sleeve (501) is integrally formed with a clearance end (503) whose inner diameter is adapted to the outer diameter of the screw thread (3). The inner side dimension of the sleeve (501) is adapted to the outer diameter of the operating rod (1). The bottom end of the sleeve (501) is integrally formed with a trumpet-shaped conical sleeve (502).

7. A portable adjustable instrument terminal cover screwing tool according to claim 1, characterized in that, A limiting groove (12) is provided on the operating rod (1) located between the mounting head (11) and the screw thread (3). A limiting bracket (504) is installed on the inner side of the clearance end (503) on the sliding sleeve (5). The limiting bracket (504) slides and fits in the limiting groove (12). A return spring (9) with its top end abutting against the bottom end of the limiting bracket (504) is vertically installed in the middle of the limiting groove (12).

8. A portable adjustable instrument terminal cover screwing tool according to claim 5, characterized in that, Both grippers (6) have a gripper (601) integrally formed at their ends, and the gripper (601) has vertical anti-slip texture on its inner side.

9. A portable adjustable instrument terminal cover screwing tool according to claim 8, characterized in that, The gripper (601) has an arc-shaped design on the outside, and when the two grippers (601) are closed, the outer side of the gripper (601) is flush with the outer surface of the operating rod (1).

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