A retractable and lockable gas valve key

Abstract

The present invention discloses a retractable and lockable gas valve key, comprising: a chuck mechanism for clamping a gas valve stem; a telescopic rod mechanism, the telescopic rod mechanism comprising a telescopic rod housing, the telescopic rod housing being provided with a telescopic assembly, one end of the telescopic assembly being connected to the chuck mechanism for telescopic adjustment, thereby driving the chuck mechanism to move along the axial direction of the telescopic assembly. The present invention integrates the telescopic rod mechanism and the chuck mechanism into a whole. When facing valve wells of different depths, the telescopic assembly can be telescopically adjusted to push the chuck mechanism toward or away from the side held by a human hand. After the movement is completed, the telescopic assembly is locked by a locking component, thereby completing the telescopic adjustment of the gas valve key. The entire telescopic adjustment process does not require the use of additional auxiliary tools or supporting parts, is easy to operate, and can be retracted to a minimum state after use, making it easy to carry.

Description

Technical Field

[0001] The present invention relates to the technical field of gas equipment, and in particular to a retractable and lockable gas valve key. Background Art

[0002] The statements herein merely provide background information 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. However, due to the deep valve well, opening the valve is inconvenient and there is a risk of suffocation.

[0004] To address the above issues, the length of the gas valve key is generally extended by splicing multiple rods. However, the gas valve key needs to be used with auxiliary tools or carrying matching parts, which is inconvenient to operate and prone to parts being lost or forgotten. Therefore, a retractable and lockable gas valve key is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to address the above-mentioned shortcomings and provide a retractable and lockable gas valve key to achieve the purpose of convenient operation and portability.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: a retractable and lockable gas valve key, comprising:

[0007] A chuck mechanism for clamping the gas valve stem;

[0008] The telescopic rod mechanism includes a telescopic rod shell, a telescopic component is provided on the telescopic rod shell, one end of the telescopic component is connected to the chuck mechanism for telescopic adjustment, driving the chuck mechanism to move along the axial direction of the telescopic component, and the telescopic rod shell is also provided with a locking component for limiting the telescopic adjustment of the telescopic component.

[0009] Furthermore, the chuck mechanism includes a sleeve, one end of the sleeve is connected to the telescopic assembly, the other end of the sleeve is provided with a first support that can move toward and away from the sleeve and can rotate with the sleeve, a plurality of clamping claws are rotatably provided on the first support, a pull rope is provided near one end of the first support near the sleeve, a second support is provided on the sleeve, a connecting rod rotatably connected to the clamping claws is provided on the second support, and a first compression spring is provided between the first support and the sleeve;

[0010] 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.

[0011] The telescopic rod mechanism also includes a winding assembly connected to the pull rope, which is used for winding and releasing the pull rope.

[0012] Furthermore, a telescopic slot is provided inside the telescopic rod housing, and the telescopic assembly includes a fixed frame arranged in the telescopic slot and a first telescopic rod capable of moving up and down in the telescopic slot, the locking component is used to limit the up and down movement of the first telescopic rod, and a second telescopic rod capable of moving up and down in the first telescopic rod is provided in the first telescopic rod, the horizontal cross-sections of the first telescopic rod and the second telescopic rod are both polygonal, a fixed pulley is provided at the top of the first telescopic rod, and a connecting rope wrapped around the fixed pulley is provided between the top of the second telescopic rod and the bottom of the telescopic slot, a second compression spring is provided between the fixed frame and the second telescopic rod, and a rope threading hole for the pull rope to pass through is provided on the fixed frame and the second telescopic rod, and the pull rope can drive the second telescopic rod and the first telescopic rod to slide into the telescopic rod housing when the pull rope is in the reeling state.

[0013] Furthermore, the locking component includes two locking plates that are sleeved on the outside of the first telescopic rod and arranged in a mirror-symmetrical manner, and a locking hole is provided on the locking plate, and the locking hole is consistent with the outer shape of the first telescopic rod and is larger than the outer size of the first telescopic rod. The two locking plates are sleeved on the outside of the first telescopic rod through the locking hole, one end of the two locking plates is rotatably connected to the telescopic rod housing, and a third compression spring is provided between the other end and the telescopic rod housing, the third compression spring pushes one end of the two locking plates close to each other, and causes the locking plates to abut against the outer side of the first telescopic rod, preventing the first telescopic rod from moving by friction, and the locking component also includes a telescopic control button provided on the telescopic rod housing, the telescopic control button is rotatably connected to the telescopic rod housing through a torsion spring, a pointed portion is provided on the telescopic control button, and an opening for the pointed portion to be inserted into the telescopic groove is provided on the telescopic rod housing. When the telescopic control button is rotated toward the side close to the telescopic rod housing, the torsion spring is gradually compressed and the pointed portion is inserted between the two locking plates, pushing the two locking plates to move to the opposite side, thereby releasing the abutment between the locking plates and the first telescopic rod.

[0014] Furthermore, the winding assembly includes a winding shaft arranged at the top of the telescopic rod shell and passing through the telescopic rod shell, 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 located outside the telescopic rod shell.

[0015] Furthermore, the winding assembly also includes a ratchet component for preventing the winding shaft from rotating to release the pull rope.

[0016] Furthermore, the ratchet and ratchet components include two ratchets fixedly arranged on the winding shaft, the two baffles are located between the two ratchets, and the ratchet and ratchet components also include a U-shaped plate arranged at the bottom of the ratchet and a bracket detachably arranged on the telescopic rod housing, the U-shaped plate can move in the direction of approaching and away from the ratchet, the 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 that passes through the bracket and is connected to the U-shaped plate, and a fourth compression spring located at the top of the bracket is sleeved on the guide column, and when the fourth compression spring is in a natural state, the U-shaped plate abuts against the ratchet.

[0017] Furthermore, a handle is provided on a side of the telescopic rod mechanism away from the clamping mechanism for assisting manual driving of the clamping mechanism to rotate.

[0018] The beneficial effects of the present invention are embodied in:

[0019] The present invention integrates the telescopic rod mechanism and the chuck mechanism into a whole. When facing valve wells of different depths, the telescopic component can be telescopically adjusted to push the chuck mechanism to move closer to or away from the side where the human hand is holding. After the movement is completed, the telescopic component is locked by the locking component, thereby completing the telescopic adjustment of the gas valve key. The entire telescopic adjustment process does not require the use of additional auxiliary tools or supporting parts, and the operation is convenient. After use, it can be retracted to the smallest state, which is easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional view of the present invention;

[0021] Figure 2 A partial view of the chuck mechanism of the present invention;

[0022] Figure 3 A partial cross-sectional view of the chuck mechanism of the present invention;

[0023] Figure 4 It is a partial cross-sectional view of the telescopic rod mechanism of the present invention;

[0024] Figure 5 is an expanded schematic diagram of the telescopic assembly of the present invention;

[0025] Figure 6 A top view of the present invention;

[0026] Figure 7 A three-dimensional view of the winding assembly of the present invention;

[0027] Figure 8 for Figure 7 A local enlarged schematic diagram of point A is shown.

[0028] In the picture:

[0029] 1. Chuck mechanism; 11. Sleeve; 12. First support; 13. Clamping jaw; 14. Pull rope; 15. Second support; 16. Connecting rod; 17. First compression spring;

[0030] 2. Telescopic rod mechanism; 21. Telescopic assembly; 211. Fixed frame; 212. First telescopic rod; 213. Second telescopic rod; 214. Fixed pulley; 215. Connecting rope; 216. Second compression spring; 22. Locking component; 221. Locking plate; 222. Third compression spring; 223. Telescopic control button; 23. Rewinding assembly; 231. Rewinding shaft; 232. Ratchet; 233. Blocking piece; 234. Knob; 235. U-shaped plate; 236. Bracket; 237. Guide post; 238. Fourth compression spring; 24. Telescopic rod housing;

[0031] 3. Handle. DETAILED DESCRIPTION

[0032] 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 of 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.

[0033] See also Figure 1-8 The present invention discloses a retractable and lockable gas valve key, comprising:

[0034] The clamping mechanism 1 is used to clamp the gas valve stem;

[0035] The telescopic rod mechanism 2 includes a telescopic rod housing 24, on which a telescopic component 21 is provided. One end of the telescopic component 21 is connected to the chuck mechanism 1 for telescopic adjustment, driving the chuck mechanism 1 to move axially along the telescopic component 21. The telescopic rod housing 24 is also provided with a locking component 22 for limiting the telescopic adjustment of the telescopic component 21.

[0036] The present invention integrates the telescopic rod mechanism 2 and the chuck mechanism 1 into a whole. When facing valve wells of different depths, the telescopic component 21 can be used for telescopic adjustment to push the chuck mechanism 1 to move closer to or away from the side where the human hand is holding. After the movement is completed, the telescopic component 21 is locked by the locking component 22, thereby completing the telescopic adjustment of the gas valve key. The entire telescopic adjustment process does not require the use of additional auxiliary tools or supporting parts, is easy to operate, and can be retracted to the minimum state after use, making it easy to carry.

[0037] In one embodiment, the chuck mechanism 1 includes a sleeve 11, one end of the sleeve 11 is connected to the telescopic assembly 21, and the other end of the sleeve 11 is provided with a first support 12 that 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 on the end of the first support 12 close to the sleeve 11, a second support 15 is provided on the sleeve 11, and a connecting rod 16 rotatably connected to the clamping jaws 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;

[0038] 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.

[0039] The telescopic rod mechanism 2 further includes a winding assembly 23 connected to the pull rope 14 for winding and releasing the pull rope 14 .

[0040] 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. Thereafter, the gas valve stem clamped by the chuck mechanism 1 can be driven to rotate by rotating the telescopic rod mechanism 2 to complete the operation of opening and closing the gas valve. Conversely, when the pull rope 14 is loosened, the first compression spring 17 pushes the first support 12 downward and resets, 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 rotation angle of the clamping jaw 13 is adjusted, so that the clamping jaw 13 can be compatible with gas valve stems of different models and specifications.

[0041] In one embodiment, a telescopic slot is provided inside the telescopic rod housing 24, and the telescopic assembly 21 includes a fixing frame 211 provided in the telescopic slot and a first telescopic rod 212 capable of moving up and down in the telescopic slot. The locking component 22 is used to limit the up and down movement of the first telescopic rod 212, and a second telescopic rod 213 capable of moving up and down in the first telescopic rod 212 is provided in the first telescopic rod 212. The horizontal cross-sections of the first telescopic rod 212 and the second telescopic rod 213 are both polygonal. A fixed pulley 214 is provided at the top of the first telescopic rod 212, and a connecting rope 215 is provided between the top of the second telescopic rod 213 and the bottom of the telescopic slot, which is wound around the fixed pulley 214. A second compression spring 216 is provided between the fixing frame 211 and the second telescopic rod 213, and a rope threading hole for the pull rope 14 to pass through is provided on the fixing frame 211 and the second telescopic rod 213. When the pull rope 14 is in the reeled-in state, it can drive the second telescopic rod 213 and the first telescopic rod 212 to slide into the telescopic rod housing 24.

[0042] With this design, the fixed pulley 214 and the connecting rope 215 are used to link the first telescopic rod 212 and the second telescopic rod 213, so that when the second telescopic rod 213 moves downward, the connecting rope 215 drives the fixed pulley 214 and the first telescopic rod 212 to move downward together, so that the first telescopic rod 212 and the second telescopic rod 213 can be extended at the same time, and the first telescopic rod 212 and the second telescopic rod 213 can be locked by the locking component 22 to complete the locking of the entire telescopic assembly 21. Compared with the current telescopic rod operation that requires fixing or loosening each section, it is more convenient and flexible. At the same time, because the horizontal cross-sections of the first telescopic rod 212 and the second telescopic rod 213 are both polygonal, after the first telescopic rod 212 and the second telescopic rod 213 are extended, rotating the telescopic rod housing 24 can synchronously drive the first telescopic rod 212 and the second telescopic rod 213 to rotate, which can meet the operational requirements when opening and closing the gas valve.

[0043] In one embodiment, the locking component 22 includes two locking plates 221 that are sleeved outside the first telescopic rod 212 and are arranged in a mirror-symmetrical manner. A card hole is opened on the locking plate 221, and the card hole is consistent with the external shape of the first telescopic rod 212 and is larger than the external dimensions of the first telescopic rod 212. The two locking plates 221 are sleeved on the outside of the first telescopic rod 212 through the card hole. One end of the two locking plates 221 is rotatably connected to the telescopic rod housing 24, and a third compression spring 222 is provided between the other end and the telescopic rod housing 24. The third compression spring 222 pushes one end of the two locking plates 221 closer to each other and makes the locking plates 221 abut against the first telescopic rod The outer side of 212 prevents the first telescopic rod 212 from moving by friction. The locking component 22 also includes a telescopic control button 223 provided on the telescopic rod housing 24. The telescopic control button 223 is rotatably connected to the telescopic rod housing 24 through a torsion spring. A pointed portion is provided on the telescopic control button 223, and an opening for the pointed portion to be inserted into the telescopic groove is opened on the telescopic rod housing 24. When the telescopic control button 223 is rotated toward the side close to the telescopic rod housing 24, the torsion spring is gradually compressed and the pointed portion is inserted between the two locking plates 221, and the two locking plates 221 are pushed to the opposite side, thereby releasing the abutment between the locking plates 221 and the first telescopic rod 212.

[0044] With this design, the second compression spring 216 is used as the extension power of the second telescopic rod 213. When the second compression spring 216 is in the natural state, the second telescopic rod 213 is in the longest extension state. By retracting the second telescopic rod 213 and compressing the second compression spring 216, the first telescopic rod 212 is locked by the locking component 22 at the required position, so that the first telescopic rod 212 and the second telescopic rod 213 can be in the retracted state to meet different extension requirements; secondly, because the locking plate 221 of the locking component 22 is in the natural state, it is pushed by the third compression spring 222 to abut against the first telescopic rod 212, so that the locking component 22 is in the locked state in the natural state. Only by pressing the telescopic control button 223, so that the telescopic control button 223 is inserted into the two locking plates 221, so that the locking plate 221 rotates to unlock the first telescopic rod 212, can the first telescopic rod 212 and the second telescopic rod 213 be extended normally.

[0045] The specific working principle is as follows: pressing the telescopic control button 223 extends the first telescopic rod 212 and the second telescopic rod 213, and controlling the extension length of the first telescopic rod 212 and the second telescopic rod 213 by controlling the release length of the pull rope 14. When the extension length reaches the requirement, stop pressing the telescopic control button 223, so that the locking plate 221 locks the first telescopic rod 212, thereby completing the extension operation of the telescopic rod mechanism 2; pressing the telescopic control button 223 and rewinding the pull rope 14 at the same time moves the clamping mechanism 1 upward to squeeze the first telescopic rod 212 and the second telescopic rod 213 to retract. When the retraction length reaches the requirement, stop pressing the telescopic control button 223, so that the locking plate 221 locks the first telescopic rod 212, thereby completing the retraction operation of the telescopic rod mechanism 2.

[0046] It should be noted that when the pull rope 14 controls the rotation of the clamping jaw 13 of the clamping mechanism 1, it must be done after the first telescopic rod 212 and the second telescopic rod 213 are locked.

[0047] See also Figure 5 In one embodiment, an extension section is further provided in the original second telescopic rod 213 according to the connection method of the second telescopic rod 213, the fixed pulley 214 and the connecting rope 215, which can further increase the telescopic length of the telescopic rod mechanism 2, so that the gas valve key can meet various usage depths when extended, and can also reduce the occupied volume when retracted, making it easier for users to carry.

[0048] In one embodiment, the winding assembly 23 includes a winding shaft 231 arranged at the top of the telescopic rod housing 24 and passing through the telescopic rod housing 24. Two blocking pieces 233 are fixedly provided on the winding shaft 231. The end of the pull rope 14 away from the first support 12 is connected to the winding shaft 231 and is located between the two blocking pieces 233. A knob 234 is fixedly provided on the end of the winding shaft 231 located outside the telescopic rod housing 24.

[0049] This design allows the user to rotate the knob 234 to drive the reel 231 forward and reverse, thereby completing the purpose of retracting and releasing the pull rope 14. At the same time, because the reel 231 is set at the top of the telescopic rod housing 24, the user can operate the clamping claw 13 outside the valve well to clamp the gas valve stem, effectively improving the safety of personnel during work.

[0050] In one embodiment, the reel assembly 23 further includes a ratchet component for preventing the reel shaft 231 from rotating to release the pull rope 14 .

[0051] This design allows the user to no longer need to hold the knob 234 after the clamping claw 13 is stably clamped on the gas valve stem, and can still ensure that the reel 231 will not reverse and release the pull rope 14, thereby improving ease of use.

[0052] In one embodiment, the ratchet and ratchet components include two ratchets 232 fixedly provided on the winding shaft 231, and two baffles 233 are located between the two ratchets 232. The ratchet and ratchet components also include a U-shaped plate 235 provided at the bottom of the ratchet 232 and a bracket 236 detachably provided on the telescopic rod housing 24. The U-shaped plate 235 can move in the direction of approaching and away from the ratchet 232. A through hole is provided on the U-shaped plate 235 for inserting one end of the bracket 236. A guide column 237 is provided in the through hole to pass through the bracket 236 and connected to the U-shaped plate 235. A fourth compression spring 238 located at the top of the bracket 236 is sleeved on the guide column 237. When the fourth compression spring 238 is in a natural state, the U-shaped plate 235 abuts against the ratchet 232.

[0053] This design allows the reel 231 to rotate only to one side in normal state and is restricted by the U-shaped plate 235 and the ratchet 232 when rotating to the other side. The reel 231 can only rotate to the other side after manually pressing down the U-shaped plate 235 to release the restriction.

[0054] In a specific implementation, the direction in which the ratchet 232 is restricted from rotating by being engaged by the U-shaped plate 235 is set as the releasing direction of the pull rope 14, thereby ensuring that the telescopic assembly 21 can maintain the set working length during operation.

[0055] In one embodiment, a handle 3 is provided on a side of the telescopic rod mechanism 2 away from the chuck mechanism 1 for assisting manual driving of the chuck mechanism 1 to rotate.

[0056] This design makes it convenient for the user to rotate the telescopic rod mechanism 2 by pushing the handle 3, thereby improving operational flexibility.

[0057] 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.

[0058] 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" and "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.

[0059] In addition, "plurality" means two or more.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, 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 retractable and lockable gas valve key, characterized in that: include: A clamping mechanism (1) for clamping a gas valve stem; A telescopic rod mechanism (2), the telescopic rod mechanism (2) comprising a telescopic rod housing (24), a telescopic assembly (21) being provided on the telescopic rod housing (24), one end of the telescopic assembly (21) being connected to a chuck mechanism (1) for telescopic adjustment, driving the chuck mechanism (1) to move along the axial direction of the telescopic assembly (21), and a locking component (22) for limiting the telescopic adjustment of the telescopic assembly (21) being further provided on the telescopic rod housing (24); A telescopic slot is provided inside the telescopic rod housing (24), the telescopic assembly (21) includes a fixing frame (211) provided in the telescopic slot and a first telescopic rod (212) capable of moving up and down in the telescopic slot, the locking component (22) is used to limit the up and down movement of the first telescopic rod (212), a second telescopic rod (213) capable of moving up and down in the first telescopic rod (212) is provided in the first telescopic rod (212), the horizontal cross-sections of the first telescopic rod (212) and the second telescopic rod (213) are both polygonal, a fixed pulley (214) is provided at the top of the first telescopic rod (212), a connecting rope (215) wound around the fixed pulley (214) is provided between the top of the second telescopic rod (213) and the bottom of the telescopic slot, and a second compression spring (216) is provided between the fixing frame (211) and the second telescopic rod (213); The locking component (22) includes two locking plates (221) which are sleeved outside the first telescopic rod (212) and are arranged in a mirror-symmetrical manner. A clamping hole is opened on the locking plate (221), and the clamping hole matches the external shape of the first telescopic rod (212) and is larger than the external size of the first telescopic rod (212). The two locking plates (221) are sleeved outside the first telescopic rod (212) through the clamping hole. One end of the two locking plates (221) is rotatably connected to the telescopic rod housing (24), and a third compression spring (222) is provided between the other end and the telescopic rod housing (24). The third compression spring (222) pushes one end of the two locking plates (221) closer to each other and makes the locking plates (221) abut against the first telescopic rod (212). ), preventing the first telescopic rod (212) from moving by friction, the locking component (22) further comprising a telescopic control button (223) provided on the telescopic rod housing (24), the telescopic control button (223) being rotatably connected to the telescopic rod housing (24) via a torsion spring, the telescopic control button (223) being provided with a pointed portion, the telescopic rod housing (24) being provided with an opening for inserting the pointed portion into the telescopic slot, and when the telescopic control button (223) is rotated toward the side of the telescopic rod housing (24), the torsion spring is gradually compressed and the pointed portion is inserted between the two locking plates (221), pushing the two locking plates (221) to move toward the opposite side, thereby releasing the abutment between the locking plates (221) and the first telescopic rod (212).

2. The retractable and lockable gas valve key according to claim 1, characterized in that: The chuck mechanism (1) comprises a sleeve (11), one end of the sleeve (11) is connected to the telescopic assembly (21), the other end of the sleeve (11) is provided with a first support (12) which can move toward and away from the sleeve (11) and can rotate with the sleeve (11), a plurality of clamping claws (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 claws (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. The telescopic rod mechanism (2) further comprises a reeling assembly (23) connected to the pull rope (14) and used for retracting and releasing the pull rope (14).

3. The retractable and lockable gas valve key according to claim 2, characterized in that: The fixing frame (211) and the second telescopic rod (213) are both provided with a rope threading hole for the pull rope (14) to pass through. When the pull rope (14) is in a retracted state, it can drive the second telescopic rod (213) and the first telescopic rod (212) to slide into the telescopic rod housing (24).

4. The retractable and lockable gas valve key according to claim 2, characterized in that: The reeling assembly (23) includes a reeling shaft (231) disposed on the top of the telescopic rod housing (24) and penetrating the telescopic rod housing (24), two baffles (233) being fixedly disposed on the reeling shaft (231), one end of the pull rope (14) away from the first support (12) being connected to the reeling shaft (231) and being located between the two baffles (233), and one end of the reeling shaft (231) being located outside the telescopic rod housing (24) being fixedly disposed with a knob (234).

5. The retractable and lockable gas valve key according to claim 4, characterized in that: The reeling assembly (23) further comprises a ratchet wheel and ratchet tooth component for preventing the reeling shaft (231) from rotating to release the pull rope (14).

6. The retractable and lockable gas valve key according to claim 5, characterized in that: The ratchet and ratchet components include two ratchets (232) fixedly arranged on the reel (231), the two blocking pieces (233) being located between the two ratchets (232), the ratchet and ratchet components also including a U-shaped plate (235) arranged at the bottom of the ratchet (232) and a bracket (236) detachably arranged on the telescopic rod housing (24), the U-shaped plate (235) being capable of moving in a direction approaching and away from the ratchet (232), the U-shaped plate (235) being provided with a through hole for inserting one end of the bracket (236), the through hole being provided with a guide column (237) penetrating the bracket (236) and connected to the U-shaped plate (235), the guide column (237 being provided with a fourth compression spring (238) located at the top of the bracket (236), and the U-shaped plate (235) being in contact with the ratchet (232) when the fourth compression spring (238) is in a natural state.

7. The retractable and lockable gas valve key according to claim 1, characterized in that: A handle (3) is provided on the side of the telescopic rod mechanism (2) away from the clamping mechanism (1) for assisting manual driving of the clamping mechanism (1) to rotate.

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