Telescopic and lockable gas valve key

Abstract

The invention discloses a telescopic and lockable gas valve key which comprises a chuck mechanism used for clamping a valve rod of a gas valve; and the telescopic rod mechanism comprises a telescopic rod shell, a telescopic assembly is arranged on the telescopic rod shell, one end of the telescopic assembly is connected with the chuck mechanism, and the telescopic assembly is used for conducting telescopic adjustment and driving the chuck mechanism to move in the axial direction of the telescopic assembly. The telescopic rod mechanism and the chuck mechanism form a whole, when facing valve wells with different depths, the chuck mechanism can be pushed to move close to or away from the hand holding side through telescopic adjustment of the telescopic assembly, and after movement is completed, the telescopic assembly is locked through the locking component; in the whole telescopic adjusting process, additional auxiliary tools or matched parts are not needed for use, operation is convenient and fast, the gas valve key can be retracted to the minimum state after being used, and carrying is convenient.

Description

Technical Field

[0001] The 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 the gas in the pipeline. They have good control characteristics and closing and sealing performance. When a gas hazard occurs, the buried valve can be closed urgently through the valve opening and closing key to reduce leakage. However, due to the deep valve well, it is inconvenient to open the valve and there is a risk of suffocation.

[0004] In view of the above problems, the length of the gas valve key is generally lengthened by splicing multiple rods, which results in the gas valve key needing 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 provide a retractable and lockable gas valve key to solve the above-mentioned shortcomings, so as to achieve the purpose of convenient operation and portability.

[0006] In order 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 a gas valve stem;

[0008] A telescopic rod mechanism, the telescopic rod mechanism includes a telescopic rod shell, a telescopic component is arranged 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] Further, 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 on the first support close to one end of 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, and 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 groove is provided inside the telescopic rod housing, the telescopic assembly includes a fixed frame arranged in the telescopic groove and a first telescopic rod capable of moving up and down in the telescopic groove, the locking component is used to limit the up and down movement of the first telescopic rod, 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, a connecting rope passing through the fixed pulley is provided between the top of the second telescopic rod and the bottom of the telescopic groove, a second compression spring is provided between the fixed frame and the second telescopic rod, and rope threading holes for the pull rope to pass through are 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 a reeled state.

[0013] Further, the locking component includes two locking plates which are sleeved outside the first telescopic rod and arranged in a mirror-symmetrical manner, a locking hole is provided on the locking plate, and the locking hole is consistent with the external shape of the first telescopic rod and is larger than the external 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 to approach each other, and makes the locking plates abut against the outside of the first telescopic rod, and prevents the first telescopic rod from moving by friction, 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, and the two locking plates are pushed 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 housing and passing through the telescopic rod housing, 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 housing.

[0015] Furthermore, the winding assembly also includes a ratchet wheel and ratchet tooth 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, 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 close to 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 that passes through the bracket and is connected to the U-shaped plate is provided in the through hole, a fourth compression spring located at the top of the bracket is sleeved on the guide column, and the U-shaped plate abuts against the ratchet when the fourth compression spring is in a natural state.

[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 hand-held side. After the movement is completed, the telescopic component 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 matching parts, is easy to operate, and can be retracted to a minimum state after use, so that it is easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 It is a partial view of the chuck mechanism of the present invention;

[0022] Figure 3 It is 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 It is a schematic diagram of the expansion 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 figure:

[0029] 1. chuck mechanism; 11. sleeve; 12. first support; 13. clamping claw; 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. Winding assembly; 231. Winding shaft; 232. Ratchet; 233. Blocking piece; 234. Knob; 235. U-shaped plate; 236. Bracket; 237. Guide column; 238. Fourth compression spring; 24. Telescopic rod housing;

[0031] 3. Handle. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

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

[0034] A clamping mechanism 1, used for clamping a gas valve stem;

[0035] The telescopic rod mechanism 2 includes a telescopic rod housing 24, on which a telescopic component 21 is arranged. 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 telescopically adjusted to push the chuck mechanism 1 to move closer to or away from the side held by a human hand. 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 smallest 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, 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 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 claw 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 arranged at the bottom of the transverse section, and the two 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 and used for winding and releasing the pull rope 14 .

[0040] With this design, when the chuck mechanism 1 is put on 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. After that, 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 to move down 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 taken out of 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 groove is provided inside the telescopic rod housing 24, and the telescopic assembly 21 includes a fixed frame 211 arranged in the telescopic groove and a first telescopic rod 212 capable of moving up and down in the telescopic groove. The locking component 22 is used to limit the first telescopic rod 212 from moving up and down. 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 passing through the fixed pulley 214 is provided between the top of the second telescopic rod 213 and the bottom of the telescopic groove. A second compression spring 216 is provided between the fixed frame 211 and the second telescopic rod 213, and rope holes for the pull rope 14 to pass through are provided on the fixed frame 211 and the second telescopic rod 213. When the pull rope 14 is in the reeling 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 or the second telescopic rod 213 can be locked by the locking component 22, so that the locking of the entire telescopic assembly 21 can be completed. Compared with the current telescopic rod operation that requires each section to be fixed or loosened, 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 operation requirements when opening and closing the gas valve.

[0043] In one embodiment, 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 is consistent with 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 on the outside of 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 arranged between the other end and the telescopic rod housing 24. The third compression spring 222 pushes one end of the two locking plates 221 to approach each other, and makes the locking plates 221 abut against the first telescopic rod. The outer side of the telescopic rod 212 is prevented from moving by friction. The locking component 22 also includes a telescopic control button 223 arranged 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 arranged on the telescopic control button 223. An opening for inserting the pointed portion into the telescopic groove is opened on the telescopic rod housing 24. When the telescopic control button 223 rotates 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 move 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 a retracted state to meet different extension requirements; secondly, because the locking plate 221 of the locking component 22 is pushed by the third compression spring 222 to abut against the first telescopic rod 212 when it is in the natural state, the locking component 22 is in a locked state when it is in the natural state. Only by pressing the telescopic control button 223, the telescopic control button 223 is inserted into the two locking plates 221, and the locking plate 221 is rotated to unlock the first telescopic rod 212, the first telescopic rod 212 and the second telescopic rod 213 can be normally extended.

[0045] The specific working principle is as follows: press the telescopic control button 223 to extend the first telescopic rod 212 and the second telescopic rod 213, and control 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 to make the locking plate 221 lock the first telescopic rod 212, thereby completing the extension operation of the telescopic rod mechanism 2; press the telescopic control button 223 and reel in the pull rope 14 at the same time to make the clamping mechanism 1 move up to squeeze the first telescopic rod 212 and the second telescopic rod 213 to retract. When the retracted length reaches the requirement, stop pressing the telescopic control button 223 to make the locking plate 221 lock 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 needs to 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, so that the telescopic length of the telescopic rod mechanism 2 can be further increased, so that the gas valve key can meet a variety of usage depths when extended, and can also reduce the occupied volume when retracted, so that it is convenient for users to carry.

[0048] In one embodiment, the winding assembly 23 includes a winding shaft 231 disposed at the top of the telescopic rod housing 24 and passing through the telescopic rod housing 24, two baffles 233 are fixedly disposed 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 baffles 233, and a knob 234 is fixedly disposed 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 to rotate forward and reverse, thereby completing the purpose of retracting and releasing the pull rope 14. At the same time, because the reel 231 is arranged on the top of the telescopic rod housing 24, the user can operate the clamp 13 outside the valve well to clamp the gas valve stem, effectively improving the safety of personnel at work.

[0050] In one embodiment, the winding assembly 23 further includes a ratchet wheel and ratchet teeth component for preventing the winding 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 and the gas valve stem are stably clamped, 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 arranged 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 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 can move in the direction of approaching and moving away from the ratchet 232. The U-shaped plate 235 is provided with a through hole for inserting one end of the bracket 236. A guide column 237 that passes through the bracket 236 and is connected to the U-shaped plate 235 is provided in the through hole. The guide column 237 is provided with a fourth compression spring 238 located at the top of the bracket 236. When the fourth compression spring 238 is in a natural state, the U-shaped plate 235 abuts against the ratchet 232.

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

[0054] In a specific implementation, the direction in which the ratchet 232 is restricted from rotating 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 a 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 clamping mechanism 1 for assisting manual driving of the clamping 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 the 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 components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication 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 used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to 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 principle of the present invention should be included in the protection scope 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 component (21) being arranged on the telescopic rod housing (24), one end of the telescopic component (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 component (21), and a locking component (22) for limiting the telescopic adjustment of the telescopic component (21) being arranged on the telescopic rod housing (24).

2. A 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 towards 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 jaw (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) also includes a reeling assembly (23) connected to the pull rope (14) and used for retracting and releasing the pull rope (14).

3. A retractable and lockable gas valve key according to claim 2, characterized in that: The telescopic rod housing (24) is provided with a telescopic slot inside, the telescopic assembly (21) comprises a fixing frame (211) arranged 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 arranged 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, and the first telescopic rod (212) is a first telescopic rod (213) having a plurality of cross-sections. 12) is provided with a fixed pulley (214) at the top, a connecting rope (215) is provided between the top of the second telescopic rod (213) and the bottom of the telescopic groove and is wound around the fixed pulley (214), a second compression spring (216) is provided between the fixed frame (211) and the second telescopic rod (213), and rope holes for the pull rope (14) to pass through are provided on the fixed frame (211) and the second telescopic rod (213), and the pull rope (14) can drive the second telescopic rod (213) and the first telescopic rod (212) to slide into the telescopic rod housing (24) when the pull rope (14) is in a retracted state.

4. A retractable and lockable gas valve key according to claim 3, characterized in that: The locking component (22) comprises 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 provided 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 dimensions 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 arranged between the other end and the telescopic rod housing (24). The third compression spring (222) pushes one end of the two locking plates (221) to approach each other, and makes the locking plates (221) abut against the first telescopic rod (212). ), and prevents the first telescopic rod (212) from moving by friction. The locking component (22) further comprises a telescopic control button (223) arranged on the telescopic rod housing (24), and the telescopic control button (223) is rotatably connected to the telescopic rod housing (24) through a torsion spring. The telescopic control button (223) is provided with a pointed portion, and the telescopic rod housing (24) is provided with an opening for the pointed portion to be inserted into the telescopic groove. 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 move to the opposite side, thereby releasing the abutment between the locking plates (221) and the first telescopic rod (212).

5. The retractable and lockable gas valve key according to claim 2, characterized in that: The reeling assembly (23) comprises a reeling shaft (231) which is arranged on the top of the telescopic rod housing (24) and passes through the telescopic rod housing (24); two baffles (233) are fixedly arranged on the reeling shaft (231); one end of the pull rope (14) away from the first support (12) is connected to the reeling shaft (231) and is located between the two baffles (233); and one end of the reeling shaft (231) which is located outside the telescopic rod housing (24) is fixedly provided with a knob (234).

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

7. A retractable and lockable gas valve key according to claim 6, characterized in that: The ratchet and ratchet components include two ratchets (232) fixedly arranged on the winding shaft (231), and the two blocking pieces (233) are located between the two ratchets (232). The ratchet and ratchet components also include 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) can move in a direction close to and away from the ratchet (232). The U-shaped plate (235) is provided with a through hole for inserting one end of the bracket (236). A guide column (237) penetrating the bracket (236) and connected to the U-shaped plate (235) is arranged in the through hole. 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).

8. 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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