Underground valve wrench

Abstract

The invention relates to the technical field of wrenches, and discloses an underground valve wrench which comprises a rod body component which comprises a first rod body, a second rod body and a third rod body, and one end of the third rod body is fixedly connected with a storage rod; the swing component comprises a universal joint, one end of the universal joint is fixedly connected with a limiting assembly, and one end of the limiting assembly is hinged to a wrench rod assembly. Through the design of the wrench rod assembly, especially linkage of a first circular ring and a second circular ring and application of a torsion spring, automatic unfolding and folding of a wrench rod are achieved, the operation process is simplified, and the labor intensity of workers is lowered. By means of cooperation of a limiting rod and a wrench rod and intelligent feedback design of a rope, accurate clamping and releasing of a valve supporting rod are guaranteed, damage to parts in the operation process is prevented, the safety coefficient of operation is improved, the storage convenience of the device is considered in the overall design, the wrench rod can be easily folded and stored, and the safety coefficient of operation is improved. And the holding rod can also be rotated into the storage groove, so that the storage space requirement is reduced, and carrying and transportation are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of wrenches, and in particular to a downhole valve wrench. Background Art

[0002] The existing valve wrenches used to open and close some valves in valve wells are mainly force wrenches. Valve wells are usually small in space, especially in underground pipeline systems in cities, which limits the use of large tools. Although force wrenches can increase torque and help open or close valves that require greater force, their operational flexibility is restricted in limited space, and sometimes they cannot even be effectively used. Valve wells are often located underground, and there may be accumulation of toxic and harmful gases in the closed environment, such as hydrogen sulfide and biogas. These gases pose a serious threat to the health of operators and may cause poisoning or even life-threatening. In addition, operations in narrow spaces also increase the risk of personal injury, such as bumps, falls and other accidental injuries. Summary of the invention

[0003] In view of the above problems existing in the existing downhole valve wrenches, the present invention is proposed.

[0004] Therefore, the purpose of the present invention is to provide a downhole valve wrench, the purpose of which is to improve the efficiency, safety and ease of use of valve operation under special circumstances, and to be an ideal solution for valve maintenance operations under complex working conditions.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A downhole valve wrench includes a rod body component, including a first rod body, a second rod body is slidably connected to the outer wall of the first rod body, a third rod body is slidably connected to the outer wall of the second rod body, and a storage rod is fixedly connected to one end of the third rod body;

[0006] The swing component is located at one end of the rod body component, and the swing component includes a universal joint fixedly connected to one end of the first rod body, one end of the universal joint is fixedly connected to a limit assembly, and one end of the limit assembly is hinged with a wrench rod assembly.

[0007] As a preferred solution of the downhole valve wrench described in the present invention, wherein: a first sliding groove is provided on the outer wall of the first rod body, a groove for accommodating the first rod body is provided inside the second rod body, a first convex strip is fixedly connected to the inner wall of the second rod body, a second sliding groove is provided on the outer wall of the second rod body, and the first convex strip slides in the first sliding groove.

[0008] As a preferred solution of the downhole valve wrench of the present invention, a groove for accommodating the second rod body is provided inside the third rod body, a second convex strip is fixedly connected to the inner wall of the third rod body, and the second convex strip slides in the second sliding groove.

[0009] As a preferred solution of the downhole valve wrench of the present invention, wherein: a accommodating groove is opened on the side wall of the storage rod, a fixing rod is fixedly connected in the accommodating groove, and a grip rod is rotatably connected to the fixing rod.

[0010] As a preferred solution of the downhole valve wrench of the present invention, the limit assembly includes a fixing column fixedly connected to one end of the universal joint, a fixing ring is fixedly connected to the fixing column, and the fixing ring is located in the middle and lower part of the fixing column.

[0011] As a preferred solution of the downhole valve wrench described in the present invention, wherein: the fixed column is sleeved with a first ring and a second ring, the first ring and the second ring are respectively located on both sides of the fixed ring, a plurality of through grooves are evenly opened on the fixed ring, a gear column is fixedly connected in the through groove, and the gear column is rotatably connected to a gear.

[0012] As a preferred solution of the downhole valve wrench described in the present invention, wherein: a plurality of first racks are fixedly connected to one side of the first circular ring, the first racks are meshed with the gears, a second rack is fixedly connected to one side of the second circular ring, the second racks are meshed with the gears, and the second racks and the first racks are respectively located on both sides of the gears.

[0013] As a preferred embodiment of the downhole valve wrench described in the present invention, the first circular ring is provided with a first rack groove corresponding to the second rack, and the second rack slides in the first rack groove; the second circular ring is provided with a second rack groove corresponding to the first rack, and the first rack slides in the second rack groove.

[0014] As a preferred solution of the downhole valve wrench described in the present invention, the wrench rod assembly includes: one end of the fixed column is connected to the wrench rod through a first hinged rod, one end of the wrench rod is provided with a hinge hole, a limiting rod is connected in the hinge hole through a second hinged rod, the limiting rod and the second hinged rod are connected with a torsion spring, and a torsion spring is connected between the wrench rod and the first hinged rod.

[0015] As a preferred solution of the downhole valve wrench of the present invention, the first ring is fixedly connected to the limit rod through a rope.

[0016] Beneficial effects of the present invention:

[0017] 1. Universal joint connection and rotation control: The use of universal joints allows the wrench head to rotate flexibly relative to the rod body, ensuring precise control of the valve in a confined space. The operator does not need to go deep into a narrow space, greatly improving operation safety.

[0018] 2. Intelligent wrench rod deployment mechanism: The design of the wrench rod assembly, especially the linkage between the first ring and the second ring, and the application of the torsion spring, realizes the automatic deployment and recovery of the wrench rod, simplifies the operation process, and enhances the convenience of use.

[0019] 3. Safe and reliable valve clamping mechanism: The coordination of the limit rod and the wrench rod, as well as the intelligent feedback design of the rope, ensures the precise clamping and release of the valve support rod, prevents damage to components during operation, and improves the safety factor of the operation.

[0020] 4. Easy to store and carry: The overall design takes into account the storage convenience of the device. The wrench rod can be easily folded and stored, and the grip can also be turned into the storage slot, reducing the storage space requirements and facilitating carrying and transportation.

[0021] In summary, the downhole valve wrench integrates a variety of innovative technologies to significantly improve the efficiency, safety and ease of use of valve operation in special environments. It is an ideal solution for valve maintenance operations under complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0023] Figure 1 It is a schematic diagram of the overall effect structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the explosion structure of the present invention.

[0025] Figure 3 It is an enlarged schematic diagram of the structure at location A of the present invention.

[0026] Figure 4 It is an enlarged schematic diagram of the structure at B of the present invention.

[0027] Figure 5 It is an enlarged schematic diagram of the structure at position C of the present invention.

[0028] Figure 6 It is a schematic diagram of the structure of the swing component of the present invention.

[0029] In the figure:

[0030] 100, rod body component; 101, first rod body; 101a, first slide groove; 102, second rod body; 102a, first convex strip; 102b, second slide groove; 103, third rod body; 103a, second convex strip; 104, storage rod; 104a, receiving groove; 104b, fixing rod; 104c, grip rod;

[0031] 200, swing component; 201, universal joint; 202, limit assembly; 202a, fixed column; 202b, fixed ring; 202c, first circular ring; 202d, second circular ring; 202e, through groove; 202f, gear column; 202g, gear; 202h, first rack; 202i, second rack; 202j, first rack groove; 202k, second rack groove; 203, wrench rod assembly; 203a, wrench rod; 203b, hinge hole; 203c, limit rod; 203e, first hinge rod; 203d, second hinge rod. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0035] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0036] Example 1

[0037] Reference Figures 1 to 5, which is the first embodiment of the present invention, provides a downhole valve wrench, the device includes a rod body component 100, including a first rod body 101, the outer wall of the first rod body 101 is slidably connected to the second rod body 102, the outer wall of the second rod body 102 is slidably connected to the third rod body 103, one end of the third rod body 103 is fixedly connected to a storage rod 104, a swing component 200, located at one end of the rod body component 100, the swing component 200 includes a universal joint 201 fixedly connected to one end of the first rod body 101, one end of the universal joint 201 is fixedly connected to a limiting assembly 202, and one end of the limiting assembly 202 is hinged with a wrench rod 203a.

[0038] The downhole valve wrench innovatively adopts a segmented rod design, which is formed by slidingly connecting the first rod 101, the second rod 102, and the third rod 103 in sequence. This design allows the user to adjust the total length of the rod according to actual needs. Specifically, the three rods can slide smoothly along each other's outer walls, thereby realizing flexible adjustment of the overall length of the rod assembly to adapt to the application environment of valve wells of different depths.

[0039] The head of the wrench is assembled at the end of this series of rods, and it is firmly connected to the first rod 101 through a delicate universal joint 201. The universal joint 201 not only serves as a connecting component, but also plays a key transmission role, allowing the wrench head to rotate at multiple angles relative to the rod. On this basis, the limit assembly 202 is installed between the universal joint 201 and the wrench rod 203a to realize the usual storage function.

[0040] In this way, operators do not need to fully enter the narrow valve well. They only need to stand at the wellhead and use this retractable wrench with universal rotation capability to easily twist and operate the horizontal valves in the well. This design greatly improves the safety and efficiency of operations and reduces the physical space limitations and potential safety risks faced by operators.

[0041] Specifically, a first sliding groove 101a is provided on the outer wall of the first rod body 101, a groove for accommodating the first rod body 101 is provided inside the second rod body 102, a first convex strip 102a is fixedly connected to the inner wall of the second rod body 102, a second sliding groove 102b is provided on the outer wall of the second rod body 102, the first convex strip 102a slides in the first sliding groove 101a, a groove for accommodating the second rod body 102 is provided inside the third rod body 103, a second convex strip 103a is fixedly connected to the inner wall of the third rod body 103, and the second convex strip 103a slides in the second sliding groove 102b.

[0042] The outer wall of the first rod body 101 is specially provided with a first slide groove 101a, and the inner wall of the second rod body 102 is correspondingly designed with a groove to accommodate the first rod body 101, and a first convex strip 102a is fixed on its inner wall. The first convex strip 102a just slides into the first slide groove 101a on the outer wall of the first rod body 101. Similarly, the outer wall of the second rod body 102 is provided with a second slide groove 102b, and the third rod body 103 has a groove inside to accommodate the second rod body 102, and a second convex strip 103a is fixed on the inner wall of the third rod body 103, and the second convex strip 103a can slide in the second slide groove 102b on the outer wall of the second rod body 102.

[0043] Such a design ensures that the first rod 101 and the second rod 102, as well as the second rod 102 and the third rod 103 can slide smoothly along a straight path, so that the length of the rods can be freely adjusted. More importantly, since the convex strip and the slide groove cooperate along a straight path rather than rotating and docking, this cleverly limits the relative rotation between the rods, ensuring that they remain stable during the sliding extension or shortening process without unnecessary rotational dislocation. This "sliding + locking rotation" mechanism is essential for precise operation in complex and confined spaces (such as valve wells). It improves the accuracy and safety of the operation, while also simplifying the user's operating process.

[0044] Furthermore, a receiving groove 104a is formed on the side wall of the storage rod 104, a fixing rod 104b is fixedly connected in the receiving groove 104a, and a gripping rod 104c is rotatably connected to the fixing rod 104b.

[0045] A receiving groove 104a is specially made on one side of the receiving rod 104, and a fixed rod 104b is installed in the groove as a fulcrum. A rotatable grip rod 104c is installed on the fixed rod 104b, and the grip rod 104c can be rotated around the fixed rod 104b as the center. When the downhole valve wrench is not in use, the grip rod 104c can be easily rotated and stored in the receiving groove, which not only saves storage space, but also avoids accidental damage or obstruction when not in operation.

[0046] When the valve needs to be operated, just press one end of the handle 104c lightly to smoothly rotate it out of the receiving groove 104a, and then hold the two ends of the handle 104c to operate. By holding the handle 104c and rotating it with force, the entire rod assembly can be driven to rotate, and then the torque is transmitted to the wrench part to achieve precise control and rotation of the valve. This design greatly improves the flexibility and convenience of operation, so that even valves located in difficult-to-reach locations can be easily operated, significantly improving work efficiency and operating comfort.

[0047] Example 2

[0048] Reference Figures 1 to 6 , which is the second embodiment of the present invention, and this embodiment provides: the limiting assembly 202 includes a fixing column 202a fixedly connected to one end of the universal joint 201, and a fixing ring 202b is fixedly connected to the fixing column 202a, and the fixing ring 202b is located in the middle and lower part of the fixing column 202a.

[0049] Furthermore, the fixing column 202a is sleeved with a first ring 202c and a second ring 202d, which are respectively located on both sides of the fixing ring 202b. The fixing ring 202b is evenly provided with a plurality of through grooves 202e, in which a gear 202g column 202f is fixedly connected, and the gear 202g column 202f is rotatably connected to the gear 202g. One side of the first ring 202c is fixedly connected with a plurality of first racks 202h, and the first racks 202h are meshed with the gears 202g. A second rack 202i is fixedly connected to one side of the ring 202d, and the second rack 202i is meshed with the gear 202g. The second rack 202i and the first rack 202h are respectively located on both sides of the gear 202g. A first rack 202h groove corresponding to the second rack 202i is opened on the first ring 202c, and the second rack 202i slides in the first rack 202h groove. A second rack 202i groove corresponding to the first rack 202h is opened on the second ring 202d, and the first rack 202h slides in the second rack 202i groove.

[0050] Among them, the fixing column 202a fixed to one end of the universal joint 201 is not only equipped with a fixing ring 202b, but also sleeved with a first circular ring 202c and a second circular ring 202d, which are respectively meshed and connected with the gears 202g on both sides of the fixing ring 202b through the first rack 202h and the second rack 202i. The layout of the lower part of the fixing ring 202b ensures that even if the first circular ring 202c slides, the second circular ring 202d can still be kept on the fixing column 202a, maintaining the stability of the structure.

[0051] Specifically, the fixing ring 202b is provided with through grooves 202e, each of which is embedded with a gear 202g column 202f, on which a gear 202g is rotatably connected. One side of the gear 202g is meshed with the first rack 202h fixed on the first circular ring 202c, and the other side is meshed with the second rack 202i on the second circular ring 202d. The first circular ring 202c and the second circular ring 202d are each also equipped with a groove corresponding to the other's rack, so that the two sets of racks can slide in the circular ring of the other party. This design avoids the movement obstruction caused by the rack directly contacting the circular ring.

[0052] When external force causes the gear 202g to rotate, the fixed ring 202b not only supports the rotation of the gear 202g, but also guides and constrains the relative movement of the first ring 202c and the second ring 202d. The movement of the first ring 202c drives the gear 202g to rotate through the first rack 202h, and the rotation of the gear 202g causes the second rack 202i on the other side to move in the opposite direction, further pushing the second ring 202d, forming a staggered linkage mechanism. The configuration of multiple sets of racks and gears 202g enhances the stability and reliability of the movement of the entire system, ensuring that when the two rings move relative to each other, the racks can slide smoothly into each other's grooves, and will not affect the normal operation of the entire device due to mutual collision, thereby achieving efficient and stable valve operation control.

[0053] Furthermore, the wrench rod 203a includes a fixed column 202a, one end of which is connected to the wrench rod 203a via a first hinge rod 203e, a hinge hole 203b is opened at one end of the wrench rod 203a, a limiting rod 203c is connected in the hinge hole 203b via a second hinge rod 203d, a torsion spring is connected to the limiting rod 203c and the second hinge rod 203d, a torsion spring is connected between the wrench rod 203a and the first hinge rod 203e, and the first ring 202c is fixedly connected to the limiting rod 203c by a rope.

[0054] When in use, there are three rotatable wrench rods 203a, one end of each wrench rod 203a is connected to the fixed column 202a through the first hinge rod 203e, and can rotate freely toward the axis of the fixed ring 202b. The other end of each wrench rod 203a is specially provided with a hinge hole 203b, which is connected to the limit rod 203c through the second hinge rod 203d, and a torsion spring is installed between the two to provide the necessary restoring force. At the same time, a torsion spring is also installed between the wrench rod 203a and the first hinge rod 203e, which work together to maintain the dynamic balance and operational convenience of the system.

[0055] The key function of the wrench rod 203a lies in its flexibility and controllability. Driven by the torsion spring, the wrench rod 203a naturally tends to expand outward, and the structural design of the hinge hole 203b enables the limit rod 203c to be stored inside the wrench rod 203a when necessary, so as to accurately engage the support rod of the valve and achieve effective control. The torsion spring also causes the limit rod 203c to automatically retract into the wrench rod 203a when not in use, ensuring the compactness and portability of the device.

[0056] What is more ingenious is that the first ring 202c is bound to the limit rod 203c by a rope, forming a mechanism. When the first ring 202c is close to the edge of the fixed column 202a, the rope is just tightened, and the wrench rod 203a is in an open state; once the first ring 202c is separated from the fixed column 202a, the rope is loosened, indicating that the wrench rod 203a is in an unused tightened arrangement state. This design not only improves the intuitiveness of the operation, but also enhances the feasibility and control accuracy of the valve operation, ensuring that each operation can be done accurately, improving work efficiency and safety.

[0057] Example 3

[0058] Reference Figures 1 to 6 , which is the third embodiment of the present invention, and provides: a rod body component 100, comprising a first rod body 101, a second rod body 102 is slidably connected to the outer wall of the first rod body 101, a third rod body 103 is slidably connected to the outer wall of the second rod body 102, and a storage rod 104 is fixedly connected to one end of the third rod body 103;

[0059] The swing component 200 is located at one end of the rod body component 100. The swing component 200 includes a universal joint 201 fixedly connected to one end of the first rod body 101. One end of the universal joint 201 is fixedly connected to a limit assembly 202. One end of the limit assembly 202 is hinged with a wrench rod 203a.

[0060] In summary, when the device is initially set, the first ring 202c and the second ring 202d are far away from each other, and the first ring 202c is not in contact with the fixed column 202a, and is outside the wrench rod 203a. This layout causes the wrench rod 203a to be restricted in a storage state, and the three wrench rods 203a are tightly together, which is convenient for storage and carrying. When it is necessary to operate the valve, the operator first pushes the second ring 202d in the direction of the fixed ring 202b. This action indirectly causes the first ring 202c to move until it contacts the end of the fixed column 202a. At this time, the pre-set torsion spring takes effect, causing the wrench rod 203a to rotate outward around the first hinge rod 203e and unfold. At the same time, the rope connecting the first ring 202c and the limit rod 203c begins to tighten, indicating that the device is ready for valve operation.

[0061] The second ring 202d is pushed further, and the first ring 202c is moved closer to the fixed ring 202b. The tension of the rope is further increased, driving the limit rod 203c connected thereto to rotate. This operation sequence particularly emphasizes the importance of releasing the wrench rod 203a first and then releasing the limit rod 203c, so as to avoid potential damage caused by prematurely releasing the limit rod 203c when the wrench rod 203a is still in a closed state. Afterwards, the operator can safely pull the three rods apart completely, rotate the grip rod 104c out, and then implement precise rotation control of the valve.

[0062] After the operation is completed, the device can be stored by following the reverse steps. First, retract each rod in turn, then remove the clamping connection between the limit rod 203c and the valve support rod, let the wrench rod 203a automatically return to the storage state under the action of the torsion spring, and finally move the second ring 202d back to its original position, so that the first ring 202c and the second ring 202d return to their initial farthest positions, and the entire device is compactly stored again, which is safe and easy to carry. This carefully designed mechanical structure greatly optimizes the convenience and safety of valve operation, while also ensuring the long-term durability of the device.

[0063] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0064] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0065] 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 preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A downhole valve wrench, characterized in that: include, The rod body component (100) comprises a first rod body (101), the outer wall of the first rod body (101) is slidably connected to a second rod body (102), the outer wall of the second rod body (102) is slidably connected to a third rod body (103), and one end of the third rod body (103) is fixedly connected to a storage rod (104); The swing component (200) is located at one end of the rod body component (100), and the swing component (200) comprises a universal joint (201) fixedly connected to one end of the first rod body (101), one end of the universal joint (201) is fixedly connected to a limit assembly (202), and one end of the limit assembly (202) is hinged with a wrench rod assembly (203).

2. The downhole valve wrench according to claim 1, characterized in that: The first rod body (101) has a first sliding groove (101a) on its outer wall, the second rod body (102) has a groove for accommodating the first rod body (101) on its interior, the second rod body (102) has a first convex strip (102a) fixedly connected to its inner wall, the second rod body (102) has a second sliding groove (102b) on its outer wall, and the first convex strip (102a) slides in the first sliding groove (101a).

3. The downhole valve wrench according to claim 2, characterized in that: A groove for accommodating the second rod body (102) is provided inside the third rod body (103), and a second convex strip (103a) is fixedly connected to the inner wall of the third rod body (103), and the second convex strip (103a) slides in the second sliding groove (102b).

4. The downhole valve wrench according to claim 3, characterized in that: The side wall of the storage rod (104) is provided with a receiving groove (104a), a fixing rod (104b) is fixedly connected in the receiving groove (104a), and a gripping rod (104c) is rotatably connected to the fixing rod (104b).

5. The downhole valve wrench according to any one of claims 1 to 4, characterized in that: The limiting assembly (202) comprises a fixing column (202a) fixedly connected to one end of the universal joint (201), a fixing ring (202b) fixedly connected to the fixing column (202a), and the fixing ring (202b) is located at the middle and lower part of the fixing column (202a).

6. The downhole valve wrench according to claim 5, characterized in that: The fixed column (202a) is sleeved with a first circular ring (202c) and a second circular ring (202d), the first circular ring (202c) and the second circular ring (202d) are respectively located on both sides of the fixed ring (202b), the fixed ring (202b) is evenly provided with a plurality of through grooves (202e), the through grooves (202e) are fixedly connected with a gear column (202f), and the gear column (202f) is rotatably connected with a gear (202g).

7. The downhole valve wrench according to claim 6, characterized in that: A plurality of first racks (202h) are fixedly connected to one side of the first circular ring (202c), and the first racks (202h) are meshed with the gear (202g); a second rack (202i) is fixedly connected to one side of the second circular ring (202d), and the second racks (202i) are meshed with the gear (202g); the second racks (202i) and the first racks (202h) are respectively located on both sides of the gear (202g).

8. The downhole valve wrench according to claim 7, characterized in that: The first circular ring (202c) is provided with a first rack groove (202j) corresponding to the second rack (202i), and the second rack (202i) slides in the first rack groove (202j); the second circular ring (202d) is provided with a second rack groove (202k) corresponding to the first rack (202h), and the first rack (202h) slides in the second rack groove (202k).

9. The downhole valve wrench according to any one of claims 6 to 8, characterized in that: The wrench rod assembly (203) comprises a fixing column (202a) having one end connected to a wrench rod (203a) via a first hinge rod (203e), a hinge hole (203b) being provided at one end of the wrench rod (203a), a limit rod (203c) being connected in the hinge hole (203b) via a second hinge rod (203d), a torsion spring being connected between the limit rod (203c) and the second hinge rod (203d), and a torsion spring being connected between the wrench rod (203a) and the first hinge rod (203e).

10. The downhole valve wrench according to claim 9, characterized in that: The first circular ring (202c) is fixedly connected to the limiting rod (203c) via a rope (203f).

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