Wrench head structure and universal hand wheel type wrench special for valve

Abstract

The invention discloses a wrench head structure and a universal hand wheel type wrench special for a valve, and relates to the technical field of valves. The clamping part comprises a connecting rod, a hook arranged at one end of the connecting rod and a clamping groove formed in the outer wall of the connecting rod; the hooks and the clamping grooves are connected to the same end of the connecting rod in different directions respectively, and the hooks and the clamping grooves are distributed in a staggered mode in the spatial position. Through the arrangement of the clamping part, the wrench can adapt to valve hand wheels of different sizes and shapes and can make contact with the outer wall of the hand wheel all the time, slipping in the operation process is prevented, and the stability and reliability of the wrench in the operation process are guaranteed; according to the valve opening and closing device, an operator can continuously operate under the condition that the position is not changed, operation can be carried out in a limited space or at a special angle, the valve opening and closing speed is greatly increased, and the operation efficiency under the condition of personnel shortage or emergency operation is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and in particular to a wrench head structure and a special wrench for a universal handwheel type valve. Background Art

[0002] In the fields of power engineering and industrial valve operation, the opening and closing operations of valves are key links in daily maintenance and emergency handling. Currently, the common handwheel valve wrenches in use are all of the fixed F type. After each turn of the valve handle, an operation of changing the position on the valve handwheel is required, and this cycle is repeated until the final valve opening and closing are completed. This operation method not only takes time but also greatly increases the physical consumption of the operator, making it difficult to improve the operation efficiency. Moreover, for valve handwheels of different models and sizes, different specifications of wrenches are often required. In operation scenarios with limited space or special angles, fixed wrenches are difficult to use, lacking flexibility and adaptability.

[0003] Based on the above problems, we propose a wrench head structure and a special wrench for a universal handwheel type valve. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is: how to adapt to valve handwheels of different sizes and shapes, reduce damage to the outer wall of the valve, and prevent the need to change positions on the valve handwheel after each turn of the valve handle.

[0005] The above technical problem is solved by the following technical solution: a chuck, including a connecting rod, a hook provided at one end of the connecting rod, and a clamping groove provided on the outer wall of the connecting rod; the hook and the clamping groove are respectively connected to different directions at the same end of the connecting rod, and the hook and the clamping groove are misaligned in spatial position; a supporting surface is provided on the outer wall of the hook, and the clamping groove includes a closed end and an open end, and a first surface and a second surface are provided from the closed end to the open end. When the hook grabs the handwheel valve, the supporting surface can at least surround at least one-half of the outer wall of the handwheel valve placed in the hook, and both the first surface and the second surface always have contact points with the outer wall of the handwheel valve.

[0006] In a preferred embodiment of the wrench head structure of the present invention: the included angle A between the first surface and the second surface is greater than 0° and less than 180°, and the distance between the first surface and the second surface gradually increases from the closed end to the open end.

[0007] In a preferred embodiment of the wrench head structure of the present invention: buffer gaskets are provided on the outer walls of both the first surface and the second surface.

[0008] In a preferred embodiment of the wrench head structure of the present invention: a fixing block is provided at one end of the connecting rod, and a threaded hole is provided on the outer wall of the fixing block.

[0009] The present invention also provides a special wrench for a universal handwheel valve, which includes a steering assembly, including a handle, an activity channel opened inside the handle, a rotating shaft arranged inside the activity channel, and a connector arranged outside the handle; an activity groove is opened on the outer wall of the connector, a fixed shaft penetrates through the inside of the activity groove, and the rotating shaft is movably matched with the fixed shaft in the activity groove, so that the included angle between the handle and the connector can be °.

[0010] In a preferred embodiment of the special wrench for a universal handwheel valve of the present invention: a first plane is arranged on the outer wall of the handle, a second plane is arranged on the outer wall of the connector, two third planes are symmetrically arranged on the side wall of the connector, and the first plane can be movably matched with any one of the second plane and the two third planes.

[0011] In a preferred embodiment of the special wrench for a universal handwheel valve of the present invention: a bearing is arranged inside the activity channel, a snap ring is arranged on the outer wall of the bearing, and an annular plate is arranged inside the activity channel.

[0012] In a preferred embodiment of the special wrench for a universal handwheel valve of the present invention: convex plates and convex blocks are arranged on the inner wall of the activity channel, a sliding plate is arranged on the outer wall of the convex block, a sliding groove is opened on the outer wall of the rotating shaft, and the sliding groove is movably matched with the sliding plate.

[0013] In a preferred embodiment of the special wrench for a universal handwheel valve of the present invention: an elastic member is arranged between the convex block and the convex plate.

[0014] In a preferred embodiment of the special wrench for a universal handwheel valve of the present invention: a threaded rod is arranged at one end of the connector away from the second plane, and the threaded rod is movably matched with a threaded hole.

[0015] The beneficial effects of the present invention are as follows: by providing a clamping portion, it can adapt to valve handwheels of different sizes and shapes, and can always contact the outer wall of the handwheel to prevent slipping during operation, ensuring the stability and reliability of the wrench during operation. And through the foldable design of the handle and the connector, not only can the operator continuously operate without changing positions, but also can operate under limited space or special angles, greatly improving the speed of opening and closing the valve and enhancing the operation efficiency in the case of shortage of personnel or emergency operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present invention and do not limit the present invention. Among them:

[0017] Figure 1 Shows a schematic diagram of the connection structure of a universal handwheel wrench;

[0018] Figure 2 Shows a schematic diagram of the connection structure of the chuck;

[0019] Figure 3 Shows Figure 2 The enlarged view of part "B" in is the schematic diagram of the connection structure of the clamping part;

[0020] Figure 4 Shows a sectional view of the internal structure of the universal handwheel wrench;

[0021] Figure 5 Shows Figure 4 The enlarged view of part "C" in is the schematic diagram of the connection structure of the rotating shaft;

[0022] Figure 6 Shows a schematic diagram of the connection head structure;

[0023] Figure 7 Shows a schematic diagram of the structure where the handle and the connection head are turned 90°;

[0024] Figure 8 Shows a schematic diagram of the structure where the handle and the connection head are turned 90° in another direction. Detailed implementation manners

[0025] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with the detailed implementation manners and the accompanying drawings.

[0026] The terms used in the present invention are those general terms that are currently widely used in the art in consideration of the functions of the present invention. However, these terms may vary according to the intentions of those of ordinary skill in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in this case, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but based on the meanings of the terms and the overall description of the present invention.

[0027] Refer to Figures 1 to 3, this embodiment provides a wrench head structure, including a chuck 1, which includes a connecting rod 11, a hook 12 provided at one end of the connecting rod 11, and a clamping groove 13 provided on the outer wall of the connecting rod 11; the hook 12 and the clamping groove 13 are respectively connected to different directions at the same end of the connecting rod 11, and the hook 12 and the clamping groove 13 are arranged in a staggered manner in terms of spatial position; a supporting surface 121 is provided on the outer wall of the hook 12, and the clamping groove 13 includes a closed end 131 and an open end 132. A first surface 133 and a second surface 134 are provided from the closed end 131 to the open end 132. When the hook 12 grasps the handwheel valve, the supporting surface 121 can at least surround half of the outer wall of the handwheel valve placed in the hook 12, and both the first surface 133 and the second surface 134 always have contact points with the outer wall of the handwheel valve.

[0028] The hook 12 is used to place the handwheel valve, and the clamping groove 13 abuts against the outer wall of the handwheel valve. When the valve is turned, it can prevent the wrench head from shaking and avoid slipping; the first surface 133 and the second surface 134 form a gradually increasing distance between the closed end 131 and the open end 132, which can enable the chuck 1 to adapt to handwheel valves of different sizes and always keep in contact with the outer wall of the valve during the clamping process to ensure stable clamping; the supporting surface 121 can at least surround half of the outer wall of the handwheel valve, which can ensure that there is enough surrounding area between the hook 12 and the handwheel valve to avoid the valve slipping from the hook 12 during turning.

[0029] As an alternative embodiment, the angle A between the first surface 133 and the second surface 134 is greater than 0° and less than 180°, and the distance between the first surface 133 and the second surface 134 gradually increases from the closed end 131 to the open end 132.

[0030] The design of the angle A can enable the first surface 133 and the second surface 134 to clamp the handwheel valve from both sides to prevent damage to the outer wall of the handwheel valve caused by single-point contact.

[0031] As an alternative embodiment, buffer gaskets 135 are provided on the outer walls of both the first surface 133 and the second surface 134.

[0032] As Figure 3 shown, the buffer gasket 125 is made of a soft and elastic material, such as a rubber pad. When clamping the handwheel valve, the buffer gasket 125 contacts the outer wall of the valve, which can effectively prevent the metal part of the clamping groove 13 from directly rubbing or colliding with the valve surface, and the buffer gasket can also adapt to the slight unevenness or shape differences on the valve surface to further improve the stability of clamping; during the operation process, the buffer gasket 125 can absorb part of the vibration and impact, reduce the vibration transmitted to the valve due to the operation, and lower the noise level.

[0033] As an alternative embodiment, a fixing block 14 is provided at one end of the connecting rod 11, and a threaded hole 141 is provided on the outer wall of the fixing block 14.

[0034] One end of the connecting rod 13 is connected to the hook 12 and the clamping groove 13, and the other end is fixedly connected to the fixing block 14. A threaded hole 141 is provided on the outer wall of the fixing block 14 at the end away from the connecting rod 13 for connecting with the connecting head 24.

[0035] Refer to Figures 1 to 8 , this embodiment provides a universal handwheel type valve special wrench, including a steering component 2, which includes a handle 21, a moving channel 22 opened inside the handle 21, a rotating shaft 23 arranged inside the moving channel 22, and a connecting head 24 arranged outside the handle 21; an activity groove 241 is opened on the outer wall of the connecting head 24, and a fixed shaft 242 penetrates through the inside of the activity groove 241. The rotating shaft 23 is movably matched with the fixed shaft 242 in the activity groove 241, and the included angle between the handle 21 and the connecting head 24 can be 90°.

[0036] The handle 21 is movably connected to the connecting head 24 through the rotating shaft 23. When opening and closing the handwheel valve, the chuck 1 is fixed to the outer wall of the handwheel valve. At this time, the central axes of the handle 21 and the connecting head 24 are in a coincident state; when it is necessary to rotate the handwheel valve, the handle 21 can be pulled to make the central axes of the handle 21 and the connecting head 24 in a 90° state, so as to facilitate the rotation of the handwheel valve; the activity groove 241 is opened on the side of the connecting head close to the handle 21. One end of the rotating shaft 23 is rotatably connected inside the moving channel 22, and the other end extends into the activity groove 241; a through hole is penetrated through the side wall of the end of the rotating shaft 23 extending into the activity groove 241, and it can be movably connected to the fixed shaft 242; the fixed shaft 242 penetrates through the connecting head 24, and the fixed shaft 242 and the connecting head 24 can be connected by threading or other detachable methods, so that the rotating shaft 23 and the connecting head 24 can be detached, which is convenient for storage, and when the rotating shaft 23 rotates around the fixed shaft 242 in the activity groove 241, the fixed shaft 242 and the connecting head 24 do not rotate relative to each other.

[0037] As an alternative embodiment, a first plane 211 is provided on the outer wall of the handle 21, a second plane 243 is provided on the outer wall of the connecting head 24, and two third planes 244 are symmetrically provided on the side wall of the connecting head 24. The first plane 211 can be movably matched with any one of the second plane 243 and the two third planes 244.

[0038] Such as Figure 4 And Figure 6As shown in the figure, the surface of one end of the handle 21 close to the connector 24 is the first plane 211, the surface of one end of the connector 24 close to the handle 21 is the second plane 243, the third plane 244 is symmetrically arranged on the side wall of the connector 24, and both ends of the movable groove 241 penetrate through the two third planes 244; when the central axes of the handle 21 and the connector 24 coincide, the first plane 211 is in contact with the second plane 243 at this time; when it is necessary to rotate the handwheel valve and the central axes of the handle 21 and the connector 24 are at a 90° state, the first plane 211 is in contact with one of the third planes 244 at this time.

[0039] As an alternative embodiment, a bearing 221 is provided inside the movable channel 22, a snap ring 222 is provided on the outer wall of the bearing 221, and an annular plate 223 is provided inside the movable channel 22.

[0040] As Figure 4 and Figure 5 As shown in the figure, the outer ring of the bearing 221 is fixed to the inner wall of the movable channel 22, the inner ring is fixedly connected to the rotating shaft 23, the snap ring 222 enables the bearing 221 and the rotating shaft 23 to rotate, but cannot move axially, which can ensure the stability of the bearing 221 in the axial direction and prevent it from axially displacing during the working process; the outer wall of the annular plate 223 is fixedly connected to the inside of the movable channel 22, and the center of the annular plate 223 allows the rotating shaft 23 to pass through without affecting the rotation of the rotating shaft 23; the annular plate 223 can play a guiding role in the axial movement of the rotating shaft 23.

[0041] As an alternative embodiment, convex plates 224 and convex blocks 225 are provided on the inner wall of the movable channel 22, a sliding plate 226 is provided on the outer wall of the convex block 225, and a sliding groove 231 is provided on the outer wall of the rotating shaft 23, and the sliding groove 231 is movably matched with the sliding plate 226.

[0042] Both the convex plate 224 and the convex block 225 are fixedly connected to the inner wall of the movable channel 22, the sliding plate 226 is fixedly arranged on the side of the convex block 225 close to the annular plate 223; the sliding groove 231 is an annular sliding groove, which does not affect the rotation of the rotating shaft 23 while slidingly cooperating with the sliding plate 226; the setting of the sliding groove 231 can limit the pulling distance of the handle 21; when the handle 21 is pulled, the sliding plate 226 can slide in the sliding groove 231.

[0043] As an alternative embodiment, an elastic member 232 is provided between the convex block 225 and the convex plate 224.

[0044] The elastic member 232 is preferably a compression spring, which is sleeved on the outside of the rotating shaft 23; when the handle 21 is pulled, the slide plate 226 slides in the slide groove 231, and the elastic member 232 is compressed. The handle 21 is bent in the compressed state of the elastic member 232, so that the rotating shaft 23 rotates around the fixed axis 23, so that the handle 21 and the central axis of the connector 24 are in a 90° state. At this time, the pulling force on the handle 21 is released, and the elastic member 232 is partially released, so that the first plane 211 is against the corresponding third plane 244. Because the elastic member 232 is not completely released, the first plane 211 will not easily leave the third plane under the elastic force of the elastic member 232.

[0045] As an optional embodiment, a threaded rod 245 is provided at one end of the connector 24 away from the second plane 243 , and the threaded rod 245 is movably matched with the threaded hole 141 .

[0046] The threaded rod 245 is fixedly arranged on the outer wall of the connecting head 24, and the connecting head 24 can be connected to the chuck 1 through the cooperation between the threaded rod 245 and the threaded hole 141; the setting of the threaded rod 245 and the threaded hole 141 allows the connecting head 24 and the chuck 1 to be disassembled and stored, and can be easily coordinated with other tools to be suitable for more operations.

[0047] When in use, first connect the connector 24 to the clamp 1 through the connection between the threaded rod 245 and the threaded hole 141, and use the fixed shaft 242 to connect the handle 21 to the connector 24. When the handwheel valve needs to be disassembled, the handwheel valve is grasped with the hook 12, and the clamping groove 13 is pressed against the outer wall of the handwheel valve; further pull the handle 21 to make the slide plate 226 slide in the slide groove 231. At this time, the elastic member 232 is compressed, and the handle 21 can be bent according to the height or position of the handwheel valve. If the handwheel valve is in a lower position, it can be bent upwards, and if the handwheel valve is in a higher position, it can be bent downwards; when the bending is completed, release the pulling force on the handle 21, and the elastic member 232 is pressed against the outer wall of the handwheel valve. 2, the first plane 211 can abut against the corresponding third plane 244, and the handle 21 is further shaken to rotate the handwheel valve. At this time, under the action of the bearing 221, the handle 21 can rotate around the rotating shaft 23, and there is no need to change the position of the clamp 1 on the outer wall of the handwheel valve; because the distance between the first surface 133 and the second surface 134 gradually increases from the closed end 131 to the open end 132, when the handle 21 rotates, the clamping groove 13 can always stably clamp the outer wall of the handwheel valve; when the operation is finished, the handle 21 is pulled again to rotate the rotating shaft 23 90° around the fixed axis 242, so that the handle 21 can be reset to coincide with the central axis of the connector 24.

[0048] Finally, it should be pointed out that the methods and devices described in detail above are only embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A wrench structure, characterized in that: Comprising, A chuck (1), comprising a connecting rod (11), a hook (12) provided at one end of the connecting rod (11), and a clamping groove (13) provided on the outer wall of the connecting rod (11); The hook (12) and the clamping groove (13) are respectively connected to different directions at the same end of the connecting rod (11), and the hook (12) and the clamping groove (13) are misaligned in spatial position; A supporting surface (121) is provided on the outer wall of the hook (12), and the clamping groove (13) includes a closed end (131) and an open end (132). A first surface (133) and a second surface (134) are provided from the closed end (131) to the open end (132). When the hook (12) grasps the handwheel valve, the supporting surface (121) can at least surround at least one-half of the outer wall of the handwheel valve placed in the hook (12), and both the first surface (133) and the second surface (134) always have contact points with the outer wall of the handwheel valve.

2. The wrench head structure according to claim 1, wherein: The included angle A between the first surface (133) and the second surface (134) is greater than 0° and less than 180°, and the distance between the first surface (133) and the second surface (134) gradually increases from the closed end (131) to the open end (132).

3. The wrench head structure according to claim 2, wherein: Buffer gaskets (135) are provided on the outer walls of both the first surface (133) and the second surface (134).

4. The wrench head structure according to claim 3, wherein: A fixing block (14) is provided at one end of the connecting rod (11), and a threaded hole (141) is opened on the outer wall of the fixing block (14).

5. A universal handwheel type special wrench for valves, characterized in that: Comprising the wrench head structure according to any one of claims 1 to 4, further comprising, A steering assembly (2), comprising a handle (21), a movable channel (22) opened inside the handle (21), a rotating shaft (23) provided inside the movable channel (22), and a connecting head (24) provided outside the handle (21); An activity groove (241) is opened on the outer wall of the connecting head (24), and a fixed shaft (242) is penetrated through the inside of the activity groove (241). The rotating shaft (23) is movably matched with the fixed shaft (242) in the activity groove (241), so that the included angle between the handle (21) and the connecting head (24) can be 90°.

6. The universal handwheel type valve special wrench according to claim 5, characterized in that: A first plane (211) is provided on the outer wall of the handle (21), a second plane (243) is provided on the outer wall of the connecting head (24), and two third planes (244) are symmetrically provided on the side wall of the connecting head (24). The first plane (211) can be movably matched with any one of the second plane (243) and the two third planes (244).

7. The universal handwheel type valve special wrench according to claim 5, characterized in that: A bearing (221) is provided inside the movable channel (22), a snap ring (222) is provided on the outer wall of the bearing (221), and an annular plate (223) is provided inside the movable channel (22).

8. The universal handwheel type valve special wrench according to claim 5 or 7, characterized in that: A convex plate (224) and a convex block (225) are provided on the inner wall of the movable channel (22). A sliding plate (226) is provided on the outer wall of the convex block (225). A sliding groove (231) is opened on the outer wall of the rotating shaft (23), and the sliding groove (231) is movably matched with the sliding plate (226).

9. The universal handwheel type valve special wrench according to claim 8, characterized in that: An elastic member (232) is provided between the bump (225) and the convex plate (224).

10. The universal handwheel type valve special wrench according to claim 9, characterized in that: One end of the connector (24) away from the second plane (243) is provided with a threaded rod (245), and the threaded rod (245) is movably matched with the threaded hole (141).

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