Valve wrench

Abstract

The invention relates to the field of semiconductor production part manufacturing, and discloses a valve wrench which is characterized in that a threaded hole used for installing a bolt is formed in the side portion of a valve, and an inner hexagonal hole is formed in the bolt; a vertical displacement adjusting mechanism and a transverse displacement adjusting mechanism matched with the vertical displacement adjusting mechanism are arranged in the handle body, the vertical displacement adjusting mechanism drives the transverse displacement adjusting mechanism to transversely move left and right, and a guide block is arranged at the tail end of the vertical displacement adjusting mechanism. The limiting mechanism is connected with the transverse displacement mechanism, and the transverse displacement mechanism drives the limiting mechanism to act so as to release or limit the ratchet mechanism arranged on the left side of the transverse displacement mechanism; a wrench head matched with the inner hexagonal hole is arranged at the front end of the ratchet mechanism; the guide block is attached to the plane through external force, after the wrench head is inserted into an inner hexagonal hole, the vertical displacement adjusting mechanism and the transverse displacement adjusting mechanism are driven to act, then the ratchet mechanism is released by the limiting mechanism, and the ratchet mechanism and the wrench head are driven to rotate through rotation of the handle body so as to tighten a bolt.

Description

Technical Field

[0001] The invention relates to the technical field of semiconductor production parts manufacturing, in particular to a valve wrench. Background Art

[0002] Semiconductor-grade valves have high requirements for materials, precision, and surface roughness. The bolts of the rotating semiconductor-grade valves need to be straight, otherwise the thread connection between the bolts and nuts will fail easily, and the thread will easily wear out after long-term use.

[0003] In addition, when installing the handle bolt, the handle of the valve body needs to be put on the valve stem first, and then the bolt is screwed into the handle to fix the handle. If the worker screws in the bolt in advance and then puts the handle into the valve stem during the installation process, the valve stem will be damaged, thus affecting the overall surface roughness, particles, service life, precision, etc. of the semiconductor-grade valve.

[0004] In order to avoid the problem of screwing in first and then fitting, a valve wrench is urgently needed to prevent the above-mentioned operation sequence. Summary of the invention

[0005] In view of the above problems, the object of the present invention is to provide a valve wrench, which can avoid the operation error of screwing in first and inserting later, and at the same time, effectively ensure that the bolt can be screwed in only after inserting.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a valve wrench, comprising: a valve, a threaded hole for installing a bolt is opened on the side of the valve, and a hexagonal hole is opened on the bolt; a handle body, a vertical displacement adjustment mechanism and a lateral displacement adjustment mechanism matched with the vertical displacement adjustment mechanism are arranged therein, so that the lateral displacement adjustment mechanism is driven by the vertical displacement adjustment mechanism to move horizontally left and right, and a guide block is arranged at the end of the vertical displacement adjustment mechanism; a limiting mechanism is connected to the lateral displacement mechanism, and the lateral displacement mechanism drives the limiting mechanism to move to release or limit the ratchet mechanism arranged on the left side of the lateral displacement mechanism; a wrench head matched with the hexagonal hole is arranged at the front end of the ratchet mechanism; the guide block is fitted with the plane by external force, and after the wrench head is inserted into the hexagonal hole, the vertical displacement adjustment mechanism and the lateral displacement adjustment mechanism are driven to move, and then the ratchet mechanism is released by the limiting mechanism, and the ratchet mechanism and the wrench head are driven to rotate by rotating the handle body to tighten the bolt.

[0007] Furthermore, a channel for the vertical displacement adjustment mechanism to move up and down is provided inside the handle body; a shell connected to the channel is provided at the bottom of the handle body for accommodating the lateral displacement adjustment mechanism, the limit mechanism and the ratchet mechanism;

[0008] A first spring is arranged at the upper part of the channel, a first end of the first spring is connected to the inner end surface of the handle plug arranged at the upper end of the handle body, and a second end of the first spring is connected to the vertical displacement adjustment mechanism through a circular ring.

[0009] Furthermore, an annular groove is provided in the shell, and a first cover plate and a second cover plate are respectively provided at both ends of the annular groove, and a partition plate is provided between the first cover plate and the second cover plate, dividing the internal space of the annular groove into two parts, the first part of the space close to the first cover plate is used to accommodate the lateral displacement adjustment mechanism and the limiting mechanism, and the second part of the space close to the second cover plate is used to accommodate the ratchet mechanism.

[0010] Furthermore, a guide hole is provided in the middle of the first cover plate, so that one end of the lateral displacement adjustment mechanism passes through the guide hole and contacts the vertical displacement adjustment mechanism;

[0011] A first through hole is provided in the middle of the second cover plate so that the wrench head at the front end of the ratchet mechanism can extend out of the second cover plate;

[0012] A second through hole is provided at the bottom of the partition for installing a limiting mechanism.

[0013] Furthermore, the vertical displacement adjustment mechanism includes a guide rail, and a guide block provided at the bottom of the guide rail and formed integrally therewith;

[0014] A trapezoidal protrusion is provided on the side of the guide rail, which divides the rail into a first section, a second section and a third section. A stopper is provided at the bottom of the third section to limit the lateral displacement adjustment mechanism; the first section can move up and down in the channel of the handle body, and the top of the first section is connected to the second end of the first spring through a circular ring.

[0015] Furthermore, the guide block adopts a semicircular guide block or a full-circular guide block.

[0016] Further, the lateral displacement adjustment mechanism includes a ratchet shaft, a roller, a sleeve and a second spring;

[0017] The end of the ratchet shaft in the ratchet mechanism passes through the partition and is located in the first part of the space near the first cover plate. The sleeve is sleeved on the ratchet shaft, and the right end of the sleeve passes through the first cover plate. The right end of the sleeve is connected to the roller through a bearing, and the roller moves up and down along the guide rail in the vertical displacement adjustment mechanism.

[0018] A second spring is sleeved on the outer side of the left end of the sleeve, so that the roller at the right end of the sleeve can be placed on the guide rail through the elastic force of the second spring; the middle cross-section of the sleeve is set as a trapezoidal platform structure, one end of the limiting mechanism is hinged on the trapezoidal platform structure, and then the limiting mechanism is driven to work by the left and right movement of the sleeve.

[0019] Further, the ratchet mechanism includes a ratchet gear, a pawl, a pawl shaft and a third spring;

[0020] The right side of the ratchet gear is integrally formed with the ratchet shaft, and the left end face of the ratchet gear is provided with a wrench head; the middle part of the ratchet pawl matched with the ratchet gear is provided on the partition through the ratchet pawl shaft;

[0021] The first end of the pawl is connected to one end of the third spring, and the other end of the third spring is arranged on the annular groove;

[0022] The second end of the pawl cooperates with the limiting mechanism, and the second end of the pawl is limited or released by the limiting mechanism.

[0023] Furthermore, the limiting mechanism includes a first connecting rod and a second connecting rod; the first end of the first connecting rod is hinged on the trapezoidal stage structure of the sleeve in the lateral displacement adjustment mechanism, the second end of the first connecting rod is hinged to the first end of the second connecting rod, and after the second end of the second connecting rod passes through the second through hole on the partition, it contacts the annular groove and the second end of the pawl to limit or release the pawl; the middle part of the second connecting rod is hinged on the partition.

[0024] Furthermore, the second connecting rod adopts a V-shaped structure, and the V-shaped angle is greater than 90°.

[0025] The present invention adopts the above technical solution, which has the following advantages:

[0026] The present invention cooperates with the vertical displacement adjustment mechanism and the lateral displacement adjustment mechanism, and the limit mechanism and the ratchet mechanism cooperate with the vertical displacement adjustment mechanism and the lateral displacement adjustment mechanism, thereby effectively ensuring that only when the valve handle is sleeved on the valve stem, the valve and the bottom of the vertical displacement adjustment mechanism are located in the same plane, and the wrench head is aligned with the bolt hole on the sleeve valve handle by pressing down with external force, thereby avoiding the erroneous operation of screwing in first and then sleeved, and avoiding damage to the valve stem. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a front view of a valve wrench in a first posture according to an embodiment of the present invention;

[0028] Figure 2 is a sectional stereoscopic diagram of a valve wrench in a first posture according to an embodiment of the present invention;

[0029] Figure 3 is a sectional stereoscopic diagram of a valve wrench in a second posture according to an embodiment of the present invention;

[0030] Figure 4 is a left sectional view of the valve wrench in a second posture according to an embodiment of the present invention;

[0031] Figure 5 yes Figure 3 A partial enlarged view of

[0032] Figure 6 yes Figure 4 A partial enlarged view of

[0033] Reference numerals:

[0034] 100-valve; 101-bolt; 110-hexagon socket hole;

[0035] 210-handle plug; 220-handle body; 221-channel; 222-first spring; 230-guide block; 231-guide rail; 232-circular ring; 233-trapezoidal protrusion; 241-first section; 242-second section; 243-third section; 244-stopper; 310-hexagonal wrench head; 311-ratchet gear; 312-ratchet shaft; 320-roller; 321-sleeve; 322-second spring; 331-first connecting rod; 332-second connecting rod; 341-first cover plate; 3411-guide hole; 342-annular groove; 343-second cover plate; 3431-first through hole; 344-second through hole; 345-partition plate; 351-pawl; 352-third spring; 353-pawl shaft. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0038] In one embodiment of the present invention, a valve wrench is provided. In this embodiment, Figures 1 to 6 As shown, the valve wrench includes:

[0039] The valve 100 has a threaded hole for mounting a bolt 101 on its side, and the bolt 101 has a hexagon socket hole 110;

[0040] The handle body 220 is provided with a vertical displacement adjustment mechanism and a lateral displacement adjustment mechanism cooperating with the vertical displacement adjustment mechanism, so that the lateral displacement adjustment mechanism is driven by the vertical displacement adjustment mechanism to move horizontally left and right; wherein a guide block 230 is provided at the end of the vertical displacement adjustment mechanism;

[0041] The limiting mechanism is connected to the lateral displacement mechanism, and the lateral displacement mechanism drives the limiting mechanism to release or limit the ratchet mechanism arranged on the left side of the lateral displacement mechanism;

[0042] The front end of the ratchet mechanism is provided with a wrench head 310 that matches the hexagonal hole 110;

[0043] The guide block 230 is fitted with the plane by external force, and after the wrench head 310 is inserted into the hexagonal hole 110, the vertical displacement adjustment mechanism and the lateral displacement adjustment mechanism are driven to operate, and then the ratchet mechanism is released by the limiting mechanism, and the ratchet mechanism and the wrench head 310 are driven to rotate by the rotation of the handle body 220 to tighten the bolt 101; by the guide block 230 being fitted with the plane, the operational error of screwing in first and then inserting is effectively avoided, ensuring that the bolt can be screwed in only after inserting.

[0044] In an optional embodiment, a channel 221 for the vertical displacement adjustment mechanism to move up and down is provided inside the handle body 220, and a first spring 222 is provided at the upper part of the channel 221; a housing connected to the channel 221 is provided at the bottom of the handle body 220, and is used to accommodate the lateral displacement adjustment mechanism, the limit mechanism and the ratchet mechanism. The first end of the first spring 222 is connected to the inner end surface of the handle plug 210 provided at the upper end of the handle body 220, and the second end of the first spring 222 is connected to the vertical displacement adjustment mechanism through a ring 232.

[0045] In this embodiment, an annular groove 342 is provided in the shell, and a first cover plate 341 and a second cover plate 343 are respectively provided at both ends of the annular groove 342, and a partition plate 345 is provided between the first cover plate 341 and the second cover plate 343, so that the internal space of the annular groove 342 is divided into two parts. The first part of the space close to the first cover plate 341 is used to accommodate the lateral displacement adjustment mechanism and the limiting mechanism, and the second part of the space close to the second cover plate 343 is used to accommodate the ratchet mechanism.

[0046] A guide hole 3411 is provided in the middle of the first cover plate 341, so that one end of the lateral displacement adjustment mechanism passes through the guide hole 3411 and contacts the vertical displacement adjustment mechanism. A first through hole 3431 is provided in the middle of the second cover plate 343, so that the wrench head 310 at the front end of the ratchet mechanism extends out of the second cover plate 343 and is located outside the second cover plate 343. A second through hole 344 is provided at the bottom of the partition plate 345 for installing a limit mechanism.

[0047] The wrench head 310 is a hexagonal wrench head to match the hexagonal inner hole 110 on the valve 100 .

[0048] In an optional embodiment, the vertical displacement adjustment mechanism includes a guide rail 231 and a guide block 230 integrally formed with the guide rail 231 and arranged at the bottom of the guide rail 231. A trapezoidal protrusion 233 is arranged on the side of the guide rail 231, and the track is divided into a first section 241, a second section 242 and a third section 243 by the trapezoidal protrusion 233. A stopper 244 is arranged at the bottom of the third section 243 to limit the lateral displacement adjustment mechanism; the first section 241 can move up and down in the channel 221 of the handle body 220, and the top of the first section 241 is connected to the second end of the first spring 222 through the ring 232.

[0049] In this embodiment, the guide block 230 can be a semicircular guide block or a fully circular guide block to guide the wrench head 310 and the hexagonal hole 110 when they rotate, and then press down to ensure that the wrench head 310 and the hexagonal hole 110 on the valve handle remain aligned and avoid wear.

[0050] When in use, the valve with the valve 100 is placed on a plane, and the semicircular guide block 230 is placed on top of the plane. The semicircular guide block 230 is pressed down by external force, and then the vertical displacement adjustment mechanism of the semicircular guide block 230 is activated.

[0051] In an optional embodiment, the lateral displacement adjustment mechanism includes a ratchet shaft 312, a roller 320, a sleeve 321 and a second spring 322. The end of the ratchet shaft 312 in the ratchet mechanism passes through the partition 345 and is located in the first part of the space near the first cover plate 341. The sleeve 321 is sleeved on the ratchet shaft 312, and the right end of the sleeve 321 passes through the first cover plate 341, and the roller 320 is connected to the right end of the sleeve 321 through a bearing. The roller 320 can move up and down along the guide rail 231 in the vertical displacement adjustment mechanism, and then the roller 320 converts the up and down movement into the left and right movement. A second spring 322 is sleeved on the outer side of the left end of the sleeve 321, so that the roller 320 at the right end of the sleeve 321 can be pushed onto the guide rail 231 through the elastic force of the second spring 322; the middle cross-section of the sleeve 321 is set as a trapezoidal platform structure, one end of the limiting mechanism is hinged on the trapezoidal platform structure, and then the limiting mechanism is driven to work by the left and right movement of the sleeve 321.

[0052] When in use, when the roller 320 moves downward along the guide rail 231, the roller 320 moves to the second section 242 and the third section 243 through the first section 241 of the guide rail 231 in sequence; when moving to the third section 243, the roller 320 is compressed by the third section 243 and then moves to the left. At this time, the roller 320 drives the sleeve 321 to move to the left, compressing the second spring 322, and the sleeve 321 drives the limiting mechanism to release the ratchet mechanism, so that the ratchet mechanism functions normally, and the rotation of the handle can drive the wrench head 310 to rotate unidirectionally. When the roller 320 moves upward along the guide rail 231, the roller 320 moves to the second section 242 and the first section 241 through the third section 243 of the guide rail 231 in sequence. When moving to the first section 241, the second spring 322 releases its elastic force to push the sleeve 321 to the right, thereby driving the roller 320 to move to the right, so that the roller 320 keeps sliding along the guide rail 231. At this time, the sleeve 321 drives the limiting mechanism to limit the ratchet mechanism, resulting in the lack of limiting of the ratchet mechanism. No matter how the handle is turned, the wrench head 310 cannot rotate.

[0053] In an optional embodiment, the ratchet mechanism includes a ratchet gear 311, a pawl 351, a pawl shaft 353 and a third spring 352. The right side of the ratchet gear 311 is integrally formed with the ratchet shaft 312, and the left end face of the ratchet gear 311 is provided with a wrench head 310; the middle part of the pawl 351 matched with the ratchet gear 311 is arranged on the partition 345 through the pawl shaft 353. The first end of the pawl 351 is connected to one end of the third spring 352, and the other end of the third spring 352 is arranged on the annular groove 342; the second end of the pawl 351 is matched with the limiting mechanism, and the second end of the pawl 351 is limited or released by the limiting mechanism. When the second end of the pawl 351 is limited by the limiting mechanism, the first end of the pawl 351 is disengaged from the ratchet gear 311, the ratchet mechanism does not work, and at this time the third spring 352 is compressed by the first end of the pawl 351; when the second end of the pawl 351 is released by the limiting mechanism, the first end of the pawl 351 is pressed into the ratchet gear 311 by the elastic force of the third spring 352, so that the first end of the pawl 351 is in a mating state with the ratchet gear 311, and the ratchet mechanism works.

[0054] In this embodiment, the number of ratchet pawls 351 is preferably three and evenly distributed in the circumference of the ratchet gear 311 ; and the number of the third springs 352 and the number of the limiting mechanisms are arranged corresponding to the number of the ratchet pawls 351 .

[0055] In an optional embodiment, the limiting mechanism includes a first connecting rod 331 and a second connecting rod 332. The first end of the first connecting rod 331 is hinged on the trapezoidal structure of the sleeve 321 in the lateral displacement adjustment mechanism, the second end of the first connecting rod 331 is hinged to the first end of the second connecting rod 332, and the second end of the second connecting rod 332 passes through the second through hole 344 on the partition 345, and contacts the annular groove 342 and the second end of the pawl 351 to limit or release the pawl 351; the middle part of the second connecting rod 332 is hinged on the partition 345.

[0056] The second connecting rod 332 adopts a V-shaped structure, and the V-shaped angle is greater than 90°.

[0057] like Figure 5 , Figure 6 As shown, when used to limit the position of the pawl 351, the roller 320 moves to the first section 241 of the guide rail 231, the sleeve 321 moves to the right, driving the first connecting rod 331 to move to the right, and then the first connecting rod 331 drives the second connecting rod 332 to move to the left, that is, the second connecting rod 332 shrinks inward, and at this time the second end of the second connecting rod 332 clamps the pawl 355, thereby achieving the limit. When releasing the pawl 351, the roller 320 moves to the third section 243 of the guide rail 231, the sleeve 321 moves to the left, driving the first connecting rod 331 to move to the left, and then the first connecting rod 331 drives the second connecting rod 332 to move to the right, that is, the second connecting rod 332 expands outward, and at this time the second connecting rod 332 releases the pawl 351.

[0058] In summary, if Figures 1 to 6 As shown, the specific method for using the valve wrench of the present invention comprises the following steps:

[0059] Step 1: First, put the valve 100 onto the valve stem and place it on a flat surface;

[0060] Step 2: If Figure 5 As shown, the semicircular guide block 230 is pressed against the aforementioned plane, and downward pressure is applied through the handle body 220, so that the hexagonal wrench head 310 of the wrench is aligned with the inner hexagonal hole 110 of the bolt 101 on the valve 100. When aligned, the semicircular guide block 230 of the wrench is compressed, and the roller 320 passes through the first section 241 of the guide rail 231 through the second section 242 to the third section 243. The roller 320 is compressed by the third section 243 and moves to the left, driving the sleeve 321 to move to the left along the guide hole 3411 opened in the first cover plate 341, so that the first connecting rod 331 of the limiting mechanism drives the second connecting rod 332 to expand outward, and the middle part of the second connecting rod 332 is hinged with the annular groove 342 on the handle body 220. When the second connecting rod 332 expands outward, the second connecting rod 332 cannot be pressed against the outer surface of the valve 100. Figure 6 The pawl 351 is limited (such as Figure 6As shown), at this time, the pawl 351 is released, and the ratchet gear 311 can drive the pawl 351, the ratchet gear 311, and the hexagonal wrench head 310 to rotate through the handle body 220, thereby driving the bolt 101 to rotate; otherwise, no matter how the handle body 220 is rotated, the bolt 101 will not rotate, thereby ensuring that the bolt 101 can be tightened only after it is installed, effectively avoiding misoperation and ensuring that the bolt can be screwed in only after it is installed.

[0061] Step 3: Tighten bolt 101.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A valve wrench, characterized in that: include: The valve (100) has a threaded hole on its side for mounting a bolt (101), and the bolt (101) has a hexagon socket hole (110); A handle body (220) is provided with a vertical displacement adjustment mechanism and a lateral displacement adjustment mechanism cooperating with the vertical displacement adjustment mechanism, so that the lateral displacement adjustment mechanism is driven by the vertical displacement adjustment mechanism to move horizontally to the left and right, and a guide block (230) is provided at the end of the vertical displacement adjustment mechanism; The limiting mechanism is connected to the lateral displacement mechanism, and the lateral displacement mechanism drives the limiting mechanism to move so as to release or limit the ratchet mechanism arranged on the left side of the lateral displacement mechanism; The front end of the ratchet mechanism is provided with a wrench head (310) matched with the hexagonal hole (110); The guide block (230) is fitted to the plane by external force, and after the wrench head (310) is inserted into the hexagonal hole (110), the vertical displacement adjustment mechanism and the lateral displacement adjustment mechanism are driven to operate, and then the ratchet mechanism is released by the limit mechanism, and the handle body (220) is rotated to drive the ratchet mechanism and the wrench head (310) to rotate, so as to tighten the bolt (101).

2. The valve wrench according to claim 1, characterized in that: A channel (221) for the vertical displacement adjustment mechanism to move up and down is provided inside the handle body (220); a housing connected to the channel (221) is provided at the bottom of the handle body (220) for accommodating the lateral displacement adjustment mechanism, the limit mechanism and the ratchet mechanism; A first spring (222) is arranged at the upper part of the channel (221), a first end of the first spring (222) is connected to the inner end surface of a handle plug (210) arranged at the upper end of the handle body (220), and a second end of the first spring (222) is connected to the vertical displacement adjustment mechanism via a ring (232).

3. The valve wrench according to claim 2, characterized in that: An annular groove (342) is provided in the shell, a first cover plate (341) and a second cover plate (343) are respectively provided at both ends of the annular groove (342), and a partition plate (345) is provided between the first cover plate (341) and the second cover plate (343), so that the internal space of the annular groove (342) is divided into two parts, the first part of the space close to the first cover plate (341) is used to accommodate the lateral displacement adjustment mechanism and the limit mechanism, and the second part of the space close to the second cover plate (343) is used to accommodate the ratchet mechanism.

4. The valve wrench according to claim 3, characterized in that: A guide hole (3411) is provided in the middle of the first cover plate (341), so that one end of the lateral displacement adjustment mechanism passes through the guide hole (3411) and contacts the vertical displacement adjustment mechanism; A first through hole (3431) is provided in the middle of the second cover plate (343) so that the wrench head (310) at the front end of the ratchet mechanism can extend out of the second cover plate (343); A second through hole (344) is provided at the bottom of the partition (345) for installing a limiting mechanism.

5. The valve wrench according to claim 1, characterized in that: The vertical displacement adjustment mechanism comprises a guide rail (231) and a guide block (230) arranged at the bottom of the guide rail (231) and formed integrally therewith; A trapezoidal protrusion (233) is arranged on the side of the guide rail (231), and the guide rail is divided into a first section (241), a second section (242) and a third section (243) by the trapezoidal protrusion (233); a stopper (244) is arranged at the bottom of the third section (243) to limit the lateral displacement adjustment mechanism; the first section (241) can move up and down in the channel (221) of the handle body (220), and the top of the first section (241) is connected to the second end of the first spring (222) through a circular ring (232).

6. The valve wrench according to claim 5, characterized in that: The guide block (230) is a semicircular guide block or a fully circular guide block.

7. The valve wrench according to claim 1, characterized in that: The lateral displacement adjustment mechanism comprises a ratchet shaft (312), a roller (320), a sleeve (321) and a second spring (322); The end of the ratchet shaft (312) in the ratchet mechanism passes through the partition (345) and is located in the first part of the space close to the first cover plate (341). The sleeve (321) is sleeved on the ratchet shaft (312), and the right end of the sleeve (321) passes through the first cover plate (341). The right end of the sleeve (321) is connected to the roller (320) through a bearing, and the roller (320) moves up and down along the guide rail (231) in the vertical displacement adjustment mechanism. A second spring (322) is sleeved on the outer side of the left end of the sleeve (321), so that the roller (320) at the right end of the sleeve (321) is pushed onto the guide rail (231) by the elastic force of the second spring (322); the middle section of the sleeve (321) is configured as a trapezoidal platform structure, one end of the limiting mechanism is hinged on the trapezoidal platform structure, and the limiting mechanism is driven to work by the left and right movement of the sleeve (321).

8. The valve wrench according to claim 1, characterized in that: The ratchet mechanism comprises a ratchet gear (311), a ratchet pawl (351), a ratchet pawl rotating shaft (353) and a third spring (352); The right side surface of the ratchet gear (311) and the ratchet shaft (312) are integrally formed, and the left end surface of the ratchet gear (311) is provided with a wrench head (310); the middle part of the ratchet pawl (351) matched with the ratchet gear (311) is provided on the partition plate (345) through the ratchet pawl shaft (353); The first end of the pawl (351) is connected to one end of the third spring (352), and the other end of the third spring (352) is arranged on the annular groove (342); The second end of the pawl (351) cooperates with the limiting mechanism, and the second end of the pawl (351) is limited or released by the limiting mechanism.

9. The valve wrench according to claim 1, characterized in that: The limiting mechanism comprises a first connecting rod (331) and a second connecting rod (332); the first end of the first connecting rod (331) is hinged on the trapezoidal platform structure of the sleeve (321) in the lateral displacement adjustment mechanism, the second end of the first connecting rod (331) is hinged to the first end of the second connecting rod (332), and after the second end of the second connecting rod (332) passes through the second through hole (344) on the partition (345), it contacts the annular groove (342) and the second end of the pawl (351) to limit or release the pawl (351); the middle part of the second connecting rod (332) is hinged on the partition (345).

10. The valve wrench according to claim 9, characterized in that: The second connecting rod (332) adopts a V-shaped structure, and the V-shaped angle is greater than 90°.

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