Gas valve spoon with adjustable clamping force

Abstract

The utility model discloses a fuel gas valve key with adjustable clamping force, which comprises a chuck mechanism, a clamping mechanism, a clamping mechanism, a clamping mechanism, a clamping mechanism, a clamping mechanism and a clamping mechanism, and the chuck mechanism is used for clamping a valve rod of a fuel gas valve and comprises a plurality of clamping jaws; one end of the rod body is connected with the chuck mechanism; the adjusting mechanism is arranged at the end, away from the chuck mechanism, of the rod body and used for adjusting the clamping force of the multiple clamping jaws. The adjusting mechanism is arranged to adjust the clamping force of the multiple clamping jaws in the chuck mechanism, so that the chuck mechanism can clamp the valve rod of the gas valve through the clamping jaws, the valve rod of the gas valve is driven to rotate through rotation of the chuck mechanism, the operation of opening and closing the gas valve is completed, and the clamping force of the clamping jaws can be controlled; and the clamping force is adjusted according to different clamped objects, so that the requirements of clamping and cleaning various sundries can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of gas equipment, in particular to a gas valve key with adjustable clamping force. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] Buried valves are safety devices for gas pipeline projects. They are used to cut off, connect, and regulate gas in the pipeline. They have good control characteristics and closing and sealing performance. When a gas hazard occurs, the buried valve can be urgently closed through the valve opening and closing key to reduce leakage.

[0004] When cleaning the valve well, there is a need to use a clamping tool to remove debris from the valve well. However, the current valve opening and closing keys only have the single function of opening and closing the valve, which cannot meet the above cleaning needs. As a result, gas maintenance personnel not only need to carry the valve opening and closing keys during the maintenance process, but also need to carry additional cleaning tools, which takes up a lot of space and increases the physical burden of the maintenance personnel. Utility Model Content

[0005] The purpose of the present invention is to address the above-mentioned deficiencies and provide a gas valve key with adjustable clamping force, so as to meet the needs of both valve opening and closing and object clamping.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solution: a gas valve key with adjustable clamping force, comprising:

[0007] A chuck mechanism, used for clamping a gas valve stem, the chuck mechanism comprising a plurality of clamping jaws;

[0008] A rod body, one end of which is connected to the chuck mechanism;

[0009] The adjustment mechanism is arranged at one end of the rod body away from the clamping mechanism and is used to adjust the clamping force of the multiple clamping jaws.

[0010] Furthermore, the chuck mechanism includes a sleeve, a first support that can move toward and away from the sleeve and can rotate with the sleeve is provided at the bottom of the sleeve, a plurality of the clamping jaws are rotatably provided on the first support, a pull rope is provided on the first support near one end of the sleeve, a second support is provided on the sleeve, a connecting rod rotatably connected to the clamping jaws is provided on the second support, and a first compression spring is provided between the first support and the sleeve;

[0011] The clamping jaw is L-shaped and consists of a transverse section and a vertical section arranged at the bottom of the transverse section. The two ends of the transverse section are rotatably connected to the connecting rod and the first support respectively.

[0012] The end of the pull rope away from the first support is connected to the adjustment mechanism for retracting and releasing the pull rope.

[0013] Furthermore, the adjustment mechanism includes a reeling assembly for retracting and releasing the draw cord and a handle assembly for assisting manual driving of the reeling assembly.

[0014] Furthermore, the winding assembly includes a winding shaft arranged at the top of the rod body and passing through the rod body, two baffles are fixedly provided on the winding shaft, the pull rope is connected to the winding shaft at one end away from the first support and is located between the two baffles, and a knob is fixedly provided at one end of the winding shaft outside the rod body.

[0015] Furthermore, the reel assembly further comprises a ratchet wheel and ratchet component for preventing the reel shaft from rotating to release the draw rope;

[0016] The ratchet and ratchet components include two ratchets fixedly arranged on the winding shaft, and the two baffles are located between the two ratchets. The ratchet and ratchet components also include a first U-shaped plate arranged at the bottom of the ratchet and a bracket detachably arranged on the rod body. The first U-shaped plate can move in the direction of approaching and away from the ratchet. The first U-shaped plate is provided with a through hole for inserting one end of the bracket. A guide column is provided in the through hole to pass through the bracket and connected to the first U-shaped plate. The guide column is provided with a second compression spring located at the top of the bracket. When the second compression spring is in a natural state, the first U-shaped plate abuts against the ratchet.

[0017] The handle assembly further comprises a handle rod and a U-shaped frame arranged at one end of the handle rod, the U-shaped frame being rotatably connected to the winding shaft, the handle assembly further comprises a second U-shaped plate located in the U-shaped frame and for limiting the unidirectional rotation of the ratchet wheel. The second U-shaped plate is capable of moving in a direction close to and away from the ratchet wheel, and a movable rod is provided on one side of the second U-shaped plate near the handle rod and inserted into the handle rod, the movable rod is provided with a third compression spring between the second U-shaped plate and the U-shaped frame. The movable rod is located in the handle rod and is provided with a pushed rod that passes through the handle rod, and a guide slot is provided on the handle rod for the pushed rod to move towards and away from one side of the U-shaped frame. The handle rod is rotatably provided with an adjusting ring located between the pushed rod and the U-shaped frame, the adjusting ring is provided with a protrusion on one side of the U-shaped frame, and the U-shaped frame is provided with a trapezoidal block located in the rotation area of the protrusion near the handle rod, and the trapezoidal block is provided with a sink groove for the protrusion to snap into. When the protrusion is snapped into the sink groove on the trapezoidal block, the second U-shaped plate is not located in the rotation area of the ratchet wheel.

[0018] The beneficial effects of the present invention are as follows:

[0019] The utility model adjusts the clamping strength of multiple claws in the chuck mechanism by providing an adjustment mechanism, so that the chuck mechanism can not only clamp the gas valve stem through the claws, and use the rotation of the chuck mechanism to drive the gas valve stem to rotate to complete the operation of opening and closing the gas valve, but also control the clamping strength of the claws, and adjust the clamping strength according to different clamped objects, so that it can meet the needs of clamping and cleaning a variety of debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional view of the utility model;

[0021] Figure 2 It is a partial cross-sectional view of the chuck mechanism of the utility model;

[0022] Figure 3 This is a structural view of the winding assembly of the utility model;

[0023] Figure 4 for Figure 3 A local enlarged schematic diagram of point A shown;

[0024] Figure 5 This is a structural view of the handle assembly of the utility model;

[0025] Figure 6 It is a working schematic diagram of the utility model.

[0026] In the picture:

[0027] 1. Chuck mechanism; 11. Sleeve; 12. First support; 13. Clamping jaw; 14. Pull rope; 15. Second support; 16. Connecting rod; 17. First compression spring;

[0028] 2. Rod body;

[0029] 3. Adjustment mechanism; 31. Winding assembly; 311. Winding shaft; 312. Ratchet; 313. Block; 314. Knob; 315. First U-shaped plate; 316. Bracket; 317. Guide post; 318. Second compression spring; 32. Handle assembly; 321. Handle rod; 322. U-shaped frame; 323. Third compression spring; 324. Push rod; 325. Adjustment ring; 326. Bump; 327. Trapezoidal block; 328. Second U-shaped plate; 329. Movable rod. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-6 The utility model discloses a gas valve key with adjustable clamping force, comprising:

[0032] A clamping mechanism 1 is used to clamp the gas valve stem, and the clamping mechanism 1 includes a plurality of clamping jaws 13;

[0033] Rod body 2, one end of which is connected to the chuck mechanism 1;

[0034] The adjustment mechanism 3 is provided at one end of the rod body 2 away from the clamping mechanism 1 and is used to adjust the clamping force of the multiple clamping jaws 13 .

[0035] The utility model adjusts the clamping strength of multiple claws 13 in the chuck mechanism 1 by providing an adjustment mechanism 3, so that the chuck mechanism 1 can not only clamp the gas valve stem through the claws 13, and use the rotation of the chuck mechanism 1 to drive the gas valve stem to rotate to complete the operation of opening and closing the gas valve, but also control the clamping strength of the claws 13, and adjust the clamping strength according to different clamped objects, so that it can meet the needs of clamping and cleaning a variety of debris.

[0036] In one embodiment, the chuck mechanism 1 includes a sleeve 11. A first support 12 is provided at the bottom of the sleeve 11, which can move toward and away from the sleeve 11 and can rotate with the sleeve 11. A plurality of clamping jaws 13 are rotatably provided on the first support 12. A pull rope 14 is provided at one end of the first support 12 near the sleeve 11. A second support 15 is provided on the sleeve 11. A connecting rod 16 rotatably connected to the clamping jaws 13 is provided on the second support 15. A first compression spring 17 is provided between the first support 12 and the sleeve 11.

[0037] The clamping jaw 13 is L-shaped and consists of a transverse section and a vertical section provided at the bottom of the transverse section. The ends of the transverse section are rotatably connected to the connecting rod 16 and the first support 12 respectively.

[0038] One end of the pull rope 14 away from the first support 12 is connected to the adjustment mechanism 3 for retracting and releasing the pull rope 14 .

[0039] With this design, when the chuck mechanism 1 is put onto the gas valve stem, the pull rope 14 is pulled up to make the clamping jaw 13 rotate toward the side close to the gas valve stem under the restriction of the connecting rod 16 until the gas valve stem is clamped. Then, the rod body 2 is rotated to drive the clamped gas valve stem to rotate, thereby completing the opening and closing operation of the gas valve. Conversely, when the pull rope 14 is loosened, the first compression spring 17 pushes the first support 12 to move downward and reset, driving the clamping jaw 13 to rotate in the opposite direction, loosening the gas valve stem, and then the chuck mechanism 1 can be moved up to be removed from the valve well. By controlling the stretching length of the pull rope 14, the purpose of compatibility with gas valve stems of different models and specifications is achieved.

[0040] It should be noted that when performing the operation of clamping the debris, it is only necessary to clamp the clamping head mechanism 1 on the debris, and then lift the rod body 2 to take the debris out of the valve well.

[0041] In one embodiment, the adjusting mechanism 3 includes a reeling assembly 31 for retracting and releasing the drawstring 14 and a handle assembly 32 for assisting manual driving of the reeling assembly 31 .

[0042] With this design, the handle assembly 32 is used to control the degree of retraction of the drawstring 14 of the reel assembly 31, so as to change the clamping force of the clamped object by the clamping claw 13. Therefore, when facing some fragile or easily deformed debris, it can be clamped out by adjusting the clamping force.

[0043] In one embodiment, the winding assembly 31 includes a winding shaft 311 arranged at the top of the rod body 2 and passing through the rod body 2, two blocking pieces 313 are fixedly provided on the winding shaft 311, the pull rope 14 is connected to the winding shaft 311 at one end away from the first support 12 and is located between the two blocking pieces 313, and a knob 314 is fixedly provided at one end of the winding shaft 311 located outside the rod body 2.

[0044] This design allows the user to rotate the knob 314 to drive the reel 311 to rotate forward and reverse, retract and release the pull rope 14, and control the clamping force of the clamp 13 by controlling the release length of the pull rope 14. At the same time, because the reel 311 is set at the top of the rod body 2, the user can operate the reel assembly 31 outside the valve well to retract and release the pull rope 14, effectively improving the safety of personnel at work.

[0045] In one embodiment, the reel assembly 31 further includes a ratchet component for preventing the reel shaft 311 from rotating to release the pull rope 14;

[0046] The ratchet and ratchet components include two ratchets 312 fixedly set on the winding shaft 311, and two baffles 313 are located between the two ratchets 312. The ratchet and ratchet components also include a first U-shaped plate 315 set at the bottom of the ratchet 312 and a bracket 316 detachably set on the rod body 2. The first U-shaped plate 315 can move in the direction of approaching and away from the ratchet 312. The first U-shaped plate 315 is provided with a through hole for inserting one end of the bracket 316. A guide column 317 is provided in the through hole to pass through the bracket 316 and connected to the first U-shaped plate 315. The guide column 317 is provided with a second compression spring 318 located at the top of the bracket 316. When the second compression spring 318 is in a natural state, the first U-shaped plate 315 abuts against the ratchet 312.

[0047] This design allows the reel 311 to rotate only to one side in normal state and is restricted by the first U-shaped plate 315 and the ratchet 312 when rotating to the other side. The reel 311 can only rotate to the other side after manually pressing down the first U-shaped plate 315 to release the restriction.

[0048] In a specific implementation, the direction in which the ratchet 312 is restricted from rotating by being engaged by the first U-shaped plate 315 is set as the releasing direction of the pull rope 14 , thereby ensuring that the clamping mechanism 1 can maintain the set clamping force during operation.

[0049] In one embodiment, the handle assembly 32 includes a handle rod 321 and a U-shaped frame 322 provided at one end of the handle rod 321, the U-shaped frame 322 is rotatably connected to the winding shaft 311, and the handle assembly 32 also includes a second U-shaped plate 328 located in the U-shaped frame 322 and used to limit the one-way rotation of the ratchet 312, the second U-shaped plate 328 can move in the direction of approaching and away from the ratchet 312, and the second U-shaped plate 328 is provided with a movable rod 329 inserted into the handle rod 321 on the side close to the handle rod 321, and the movable rod 329 is provided with a third compression spring 323 located between the second U-shaped plate 328 and the U-shaped frame 322, and the movable rod 329 is located in the handle rod 321. The end is provided with a pushed rod 324 that passes through the handle rod 321, and the handle rod 321 is provided with a guide groove for the pushed rod 324 to move toward and away from the U-shaped frame 322. An adjusting ring 325 is rotatably provided on the handle rod 321 and is located between the pushed rod 324 and the U-shaped frame 322. A protrusion 326 is provided on the side of the adjusting ring 325 close to the U-shaped frame 322, and a trapezoidal block 327 is provided on the side of the U-shaped frame 322 close to the handle rod 321 and is located in the rotation area of the protrusion 326, and a recess is provided on the trapezoidal block 327 for the protrusion 326 to be snapped into. When the protrusion 326 is snapped into the recess on the trapezoidal block 327, the second U-shaped plate 328 is not located in the rotation area of the ratchet 312.

[0050] With this design, by swinging the handle 321 back and forth, the second U-shaped plate 328 can drive the ratchet 312 to continuously rotate toward one side of the winding rope 14, thereby quickly adjusting the clamping tightness of the clamping jaws 13 and effectively improving the convenience of manual operation for maintenance personnel.

[0051] It should be noted that before the clamping jaws 13 clamp an object, the adjusting ring 325 needs to be rotated in advance so that the protrusion 326 is stuck in the groove of the trapezoidal block 327. During this process, the push rod 324 is pushed by the adjusting ring 325, driving the second U-shaped plate 328 to move away from the U-shaped frame 322, so that the second U-shaped plate 328 no longer restricts the ratchet 312. After that, the first U-shaped plate 315 can be pressed to rotate the winding shaft 311 to the other side, releasing the pull rope 14. Afterwards, the adjusting ring 325 is reset to perform subsequent clamping operations.

[0052] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0053] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0054] In addition, "plurality" means two or more.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gas valve key with adjustable clamping force, characterized in that: include: A clamping mechanism (1) for clamping a gas valve stem, the clamping mechanism (1) comprising a plurality of clamping claws (13); A rod body (2), one end of which is connected to the chuck mechanism (1); The adjustment mechanism (3) is arranged at one end of the rod body (2) away from the clamping mechanism (1) and is used to adjust the clamping force of the multiple clamping claws (13).

2. The gas valve key with adjustable clamping force according to claim 1, characterized in that: The chuck mechanism (1) comprises a sleeve (11), a first support (12) is provided at the bottom of the sleeve (11) and can move toward and away from the sleeve (11) and can rotate along with the sleeve (11), a plurality of clamping jaws (13) are rotatably provided on the first support (12), a pull rope (14) is provided at one end of the first support (12) close to the sleeve (11), a second support (15) is provided on the sleeve (11), a connecting rod (16) rotatably connected to the clamping jaw (13) is provided on the second support (15), and a first compression spring (17) is provided between the first support (12) and the sleeve (11); The clamping claw (13) is L-shaped and consists of a transverse section and a vertical section arranged at the bottom of the transverse section. The two ends of the transverse section are rotatably connected to the connecting rod (16) and the first support (12) respectively. One end of the pull rope (14) away from the first support (12) is connected to the adjustment mechanism (3) and is used for retracting and releasing the pull rope (14).

3. The gas valve key with adjustable clamping force according to claim 2, characterized in that: The adjusting mechanism (3) comprises a reeling assembly (31) for reeling in and releasing the draw cord, and a handle assembly (32) for assisting manual driving of the reeling assembly (31).

4. The gas valve key with adjustable clamping force according to claim 3, characterized in that: The reeling assembly (31) comprises a reeling shaft (311) arranged at the top of the rod body (2) and passing through the rod body (2); two baffles (313) are fixedly arranged on the reeling shaft (311); one end of the pull rope (14) away from the first support (12) is connected to the reeling shaft (311) and is located between the two baffles (313); and a knob (314) is fixedly arranged on one end of the reeling shaft (311) located outside the rod body (2).

5. The gas valve key with adjustable clamping force according to claim 4, characterized in that: The reel assembly (31) further comprises a ratchet wheel and ratchet tooth component for preventing the reel shaft (311) from rotating to release the draw rope (14); The ratchet and ratchet components include two ratchets (312) fixedly arranged on the winding shaft (311), and the two blocking pieces (313) are located between the two ratchets (312). The ratchet and ratchet components also include a first U-shaped plate (315) arranged at the bottom of the ratchet (312) and a bracket (316) detachably arranged on the rod body (2). The first U-shaped plate (315) can move in a direction close to and away from the ratchet (312). The first U-shaped plate (315) is provided with a through hole for inserting one end of the bracket (316). A guide column (317) passing through the bracket (316) and connected to the first U-shaped plate (315) is provided in the through hole. A second compression spring (318) located at the top of the bracket (316) is sleeved on the guide column (317). When the second compression spring (318) is in a natural state, the first U-shaped plate (315) abuts against the ratchet (312).

6. The gas valve key with adjustable clamping force according to claim 5, characterized in that: The handle assembly (32) includes a handle rod (321) and a U-shaped frame (322) arranged at one end of the handle rod (321), the U-shaped frame (322) is rotatably connected to the reel (311), and the handle assembly (32) also includes a second U-shaped plate (328) located in the U-shaped frame (322) and used to limit the one-way rotation of the ratchet (312), the second U-shaped plate (328) can move in the direction of approaching and away from the ratchet (312), and a movable rod (329) inserted into the handle rod (321) is provided on the side of the second U-shaped plate (328) close to the handle rod (321), and a third compression spring (323) is sleeved on the movable rod (329) and is located between the second U-shaped plate (328) and the U-shaped frame (322), and the movable rod (329) is located at one end of the handle rod (321) and is arranged A push rod (324) is provided that passes through the handle rod (321). A guide groove is provided on the handle rod (321) for the push rod (324) to move toward and away from the U-shaped frame (322). An adjusting ring (325) is rotatably provided on the handle rod (321) and is located between the push rod (324) and the U-shaped frame (322). A protrusion (326) is provided on the side of the adjusting ring (325) close to the U-shaped frame (322). A trapezoidal block (327) is provided on the side of the U-shaped frame (322) close to the handle rod (321) and is located within the rotation area of the protrusion (326). A recess is provided on the trapezoidal block (327) for the protrusion (326) to be inserted into. When the protrusion (326) is inserted into the recess on the trapezoidal block (327), the second U-shaped plate (328) is not located within the rotation area of the ratchet (312).

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