Double-nut locking wrench

Abstract

The utility model provides a double-nut locking wrench, and relates to the technical field of mechanical wrenches. The double-nut locking wrench comprises a clamping wrench which comprises a handle, a transmission part, an upper clamping head and a lower clamping head; the transmission part is arranged at the front end of the handle, the upper clamping head and the lower clamping head are arranged on the front side of the transmission part, and the lower clamping head is located below the upper clamping head. The upper clamping head is in transmission connection with the transmission part, and the transmission part drives the upper clamping head to rotate; the torque wrench is detachably connected to the clamping wrench; the torque wrench swings up and down and drives the transmission part to move. According to the double-nut locking wrench, the nuts can be tightened with large torque in a narrow space, and the installation position of an operation object is not affected by tightening force.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical wrenches, and in particular to a double-nut locking wrench. BACKGROUND

[0002] In a semiconductor manufacturing device, process gas is delivered to a working cavity after being mixed by a valve block. Each gas uses an adjustable diaphragm valve to adjust the flow capacity, and the diaphragm valve needs to be adjusted and locked manually offline.

[0003] Generally, each diaphragm valve is installed compactly on the valve block, and it is difficult to tighten the nut of the diaphragm valve using a wrench. Moreover, the valve block is connected to the working cavity through a ceramic tube, and the diaphragm valve cannot bear the tightening force during the tightening of the nut of the diaphragm valve. In the related art, two wrenches are usually used to operate the nut of the diaphragm valve, one wrench clamps the lower nut of the diaphragm valve, and the other wrench clamps the upper nut of the diaphragm valve, and the operator operates the upper nut of the diaphragm valve with both hands.

[0004] However, the operation space of the diaphragm valve nut is insufficient, the operation difficulty is great, and there is a risk of insufficient tightening torque and ceramic tube fragmentation. CONTENT OF THE INVENTION

[0005] The present application provides a double-nut locking wrench, which can tighten the nut with large torque in a narrow space, and the installation of the operating object is not affected by the tightening force.

[0006] The present application provides a double-nut locking wrench, which includes a clamping wrench, a transmission member, an upper clamping head, and a lower clamping head. The transmission member is arranged at the front end of the handle, the upper clamping head and the lower clamping head are arranged on the front side of the transmission member, and the lower clamping head is below the upper clamping head. The upper clamping head is in transmission connection with the transmission member, and the transmission member drives the upper clamping head to rotate. A torque wrench is detachably connected to the clamping wrench. The torque wrench swings up and down and drives the transmission member to move.

[0007] The double-nut locking wrench provided by the application comprises a clamping wrench and a torque wrench, the clamping wrench is used for clamping double nuts, and the torque wrench is detachably connected to the clamping wrench to drive the clamping wrench to move. The clamping wrench comprises a handle, a transmission member arranged at the front end of the handle, an upper clamping head and a lower clamping head, the upper clamping head and the lower clamping head are arranged at the front side of the transmission member and are arranged in a vertical manner. The upper clamping head and the lower clamping head are clamped on the upper and lower nuts respectively, the upper clamping head is in transmission connection with the transmission member, the torque wrench is swung up and down to drive the transmission member to move, and the transmission member drives the upper clamping head to rotate. The nut clamped by the lower clamping head is a fixed reference, and the upper clamping head rotates to tighten the corresponding nut. In this way, the up-and-down swinging of the torque wrench is converted into the rotation of the upper clamping head, the operation space of the wrench is small, the operation difficulty is small, and the nut can be tightened with a large torque in a narrow space. In addition, the nut clamped by the lower clamping head is not subjected to force, and the installation position of the operation object is not affected by the tightening force.

[0008] In a possible implementation, the upper clamping head comprises a clamping head body and a worm wheel, the worm wheel is arranged around the outer periphery of the clamping head body; the transmission member comprises a worm, the worm is in meshing connection with the worm wheel, and the torque wrench drives the worm to rotate.

[0009] In a possible implementation, the clamping head body and the worm wheel are detachable, and the clamping head body and the worm wheel are fixedly connected through a positioning member.

[0010] In a possible implementation, the clamping head body is provided with at least one first groove, the worm wheel is provided with at least one second groove, and the first groove and the second groove jointly form a positioning groove; the positioning member is provided with at least one positioning column, and the positioning column is inserted into the positioning groove.

[0011] In a possible implementation, the double-nut locking wrench further comprises a movable seat arranged around the outer periphery of the lower clamping head and movably connected with the handle, and the worm wheel slides along the circumference of the movable seat.

[0012] In a possible implementation, one side of the handle facing the movable seat is provided with a direction adjusting groove, one side of the movable seat facing the handle protrudes a direction adjusting part, and the direction adjusting part slides in the direction adjusting groove.

[0013] In a possible implementation, one end groove wall of the direction adjusting groove abuts against the direction adjusting part, and a positioning block is arranged between the other end groove wall of the direction adjusting groove and the direction adjusting part.

[0014] In a possible implementation, the double-nut locking wrench further comprises a lower end cover connected with the handle and supported on the bottom of the movable seat.

[0015] In a possible implementation, the lower end cover comprises an end cover body provided with an adjusting hole, and the direction adjusting groove is arranged in the adjusting hole; and an adjusting cover connected with the handle and arranged in the adjusting hole.

[0016] In a possible implementation, the double-nut locking wrench further comprises a guide connected to the upper end of the movable seat; and one of the guide and the worm wheel is provided with a sliding groove, and the other is provided with a guide rail which is inserted into the sliding groove and slides along the sliding groove.

[0017] In a possible implementation, the double-nut locking wrench further comprises side end covers installed on both sides of the front end of the handle, and the two ends of the transmission member are respectively rotatably connected to the side end covers.

[0018] In a possible implementation, the double-nut locking wrench further comprises bearings sleeved on the two ends of the transmission member and abutting against the side end covers, and a check ring sleeved on the two ends of the transmission member and arranged between the side end covers and the bearings.

[0019] In a possible implementation, the double-nut locking wrench further comprises an upper end cover connected to the top ends of the side end covers.

[0020] In a possible implementation, the handle comprises a handle body, a mounting seat connected to the front end of the handle body, and the transmission member, the upper clamping head and the lower clamping head are all installed on the mounting seat. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description can also be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0022] Figure 1 A structure diagram of the double-nut locking wrench in one perspective view according to the embodiment of the present application is shown in FIG. 1.

[0023] Figure 2 A structure diagram of the double-nut locking wrench in another perspective view according to the embodiment of the present application is shown in FIG. 2. Figure 1

[0024] An exploded structure diagram of the double-nut locking wrench according to the embodiment of the present application is shown in FIG. 3. Figure 3 Figure 1 A partial sectional view of the double-nut locking wrench along the line A-A according to the embodiment of the present application is shown in FIG. 4.

[0025] Figure 4 A partial sectional view of the double-nut locking wrench along the line B-B according to the embodiment of the present application is shown in FIG. 5. Figure 1

[0026] A partial sectional view of the double-nut locking wrench along the line B-B according to the embodiment of the present application is shown in FIG. 5. Figure 5 Figure 1 A partial sectional view of the double-nut locking wrench along the line B-B according to the embodiment of the present application is shown in FIG. 5.

[0027] Figure 6 A partial sectional view of the double-nut locking wrench along the line B-B according to the embodiment of the present application is shown in FIG. 5.​​

[0028] Figure 7 An assembly structure diagram of the upper clamping head provided for the embodiment of the present application is provided;

[0029] Figure 8 An assembly exploded structure diagram of the upper clamping head and the lower clamping head provided for the embodiment of the present application is provided;

[0030] Figure 9 An exploded structure diagram of the clamping end head provided for the embodiment of the present application is provided.

[0031] Explanation of reference signs:

[0032] 100 - clamping wrench;

[0033] 110 - handle; 120 - transmission member; 130 - upper clamping head; 140 - lower clamping head; 150 - bracket; 160 - movable seat; 170 - guide member; 180 - lower end cover;

[0034] 111 - handle body; 112 - mounting seat; 121 - worm; 122 - bearing; 123 - check ring; 131 - clamping head body; 132 - worm wheel; 133 - positioning member; 141 - upper flange; 142 - lower flange; 151 - side end cover; 152 - upper end cover; 161 - direction adjusting part; 162 - lapping groove; 163 - limiting groove; 171 - sliding groove; 181 - end cover body; 182 - adjusting cover;

[0035] 1121 - direction adjusting groove; 1122 - positioning block; 1301 - positioning groove; 1311 - first groove; 1321 - second groove; 1322 - guide rail; 1331 - positioning column; 1811 - adjusting hole;

[0036] 200 - torque wrench. DETAILED DESCRIPTION

[0037] As described in the background, due to the compact installation of each diaphragm valve on the valve block, the operation space of the double wrench is narrow, and there are problems of insufficient operation space, great operation difficulty, and insufficient tightening torque. Moreover, since the valve block and the working cavity are connected through a ceramic pipe, the ceramic pipe material is brittle and is easy to break under stress. Therefore, in the process of tightening the diaphragm valve nut, there is a risk of ceramic pipe breakage.

[0038] In view of this, this application provides a double-nut tightening wrench, which includes a clamping wrench and a torque wrench. The clamping wrench is used to clamp two nuts, and the torque wrench is detachably connected to the clamping wrench to drive the clamping wrench to move. The clamping wrench includes a handle, a transmission component disposed at the front end of the handle, an upper clamping head, and a lower clamping head. The upper and lower clamping heads are disposed on the front side of the transmission component and are positioned vertically. The upper and lower clamping heads respectively clamp the upper and lower nuts. The upper clamping head is connected to the transmission component, and the torque wrench swings up and down to drive the transmission component to move, which in turn drives the upper clamping head to rotate. The nut clamped by the lower clamping head serves as a fixed reference, and the rotation of the upper clamping head tightens the corresponding nut. This configuration converts the up-and-down swing of the torque wrench into the rotation of the upper clamping head, resulting in a small operating space and easy operation, allowing for high-torque tightening of nuts in confined spaces. Furthermore, the nut clamped by the lower clamping head is not subjected to force, and the installation location of the object being operated on is not affected by the tightening force.

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] Figure 1 This is a structural diagram of the double-nut locking wrench provided in an embodiment of this application, viewed from one perspective. Figure 2 for Figure 1 A structural diagram of the double-nut locking wrench from another perspective. Figure 3 for Figure 1 An exploded view of the double-nut locking wrench.

[0041] Reference Figure 1 and Figure 2 As shown in the illustration, this application provides a double-nut locking wrench (hereinafter referred to as the wrench), which is used to tighten an object having two nuts. The object has two nuts arranged vertically, and the wrench can tighten one nut or tighten both nuts sequentially. For ease of explanation, the two nuts arranged vertically on the object are referred to as the upper nut and the lower nut, respectively.

[0042] Taking semiconductor manufacturing equipment as an example, the equipment includes multiple pipelines for conveying process gases. Each pipeline is connected to a valve block, which is connected to the working chamber via a ceramic tube. Multiple process gases are delivered to the valve block through their respective pipelines. The valve block mixes the process gases and then sends the mixture into the working chamber via the ceramic tube. Each pipeline is connected to the valve block via an adjustable diaphragm valve, and the flow rate of the fluid in the pipeline is adjusted by opening or closing the adjustable diaphragm valve.

[0043] The valve block is an important component in hydraulic or pneumatic systems, which can control the flow direction, pressure and flow rate of fluid. The valve block connected between the pipes and the working chamber is mainly used for mixing multiple process gases. The ceramic pipe is made of high-purity ceramic materials such as zirconia and alumina, and is formed by dry pressing, cold isostatic pressing, high-temperature sintering and precision machining. The ceramic pipe is brittle and easy to break under stress. For the ceramic pipe connected between the valve block and the working chamber, the ceramic pipe mainly plays an insulating and heat-insulating role.

[0044] The adjustable diaphragm valve is installed on the valve block by double nuts. When it is necessary to adjust the flow capacity of the adjustable diaphragm valve, the nuts can be loosened, the adjustable diaphragm valve can be rotated to adjust the flow capacity, and then the nuts can be tightened. The lower nut can be fixed relative to the valve block, and thus the lower nut can also be referred to as a fixed nut. The upper nut can be rotated to loosen or tighten the adjustable diaphragm valve, and thus the upper nut can also be referred to as a locking nut.

[0045] To this end, the wrench provided in the present embodiment can be applied in semiconductor manufacturing equipment to adjust the nuts of the adjustable diaphragm valve to loosen or tighten the upper nut of the adjustable diaphragm valve. Of course, the wrench provided in the present embodiment can also be applied to other operating objects with double nuts, which is not limited in the present embodiment. The following will be described by taking the wrench for adjusting the nuts of the adjustable diaphragm valve as an example.

[0046] Continuing to refer to Figure 1 and Figure 2 , the wrench provided in the present embodiment includes a clamping wrench 100 and a torque wrench 200, and the torque wrench 200 is detachably connected to the clamping wrench 100. The clamping wrench 100 is used to clamp the upper nut and the lower nut of the adjustable diaphragm valve, and the torque wrench 200 is used to drive the clamping wrench 100 to move to adjust the nuts, such as tightening or loosening the upper nut, by the clamping wrench 100.

[0047] For example, the torque wrench 200 can be a ratchet wrench, and the end space of the torque wrench 200 is fitted with components such as a snap spring, a pawl, a spring and a ratchet. Through the cooperation of the pawl and the ratchet, the torque wrench 200 can transmit rotational force in one direction (the head of the torque wrench 200 can be provided with a bayonet for adjusting the transmission direction of the rotational force). In addition, the torque wrench 200 can be provided with a torque detection device for detecting the force applied by the operator on the torque wrench 200.

[0048] In which, referring to Figure 1 and Figure 2The clamping wrench 100 comprises a handle 110, an upper clamping head 130 and a lower clamping head 140. The handle 110 is used for the operator to hold, and the handle 110 extends to the front end of the double-nut adjustable diaphragm valve. The upper clamping head 130 and the lower clamping head 140 are arranged at the front end of the handle 110, and the upper clamping head 130 and the lower clamping head 140 are arranged in a top-down manner, with the lower clamping head 140 being below the upper clamping head 130. The upper clamping head 130 is used for clamping the upper nut of the adjustable diaphragm valve, and the lower clamping head 140 is used for clamping the lower nut of the adjustable diaphragm valve.

[0049] Referring to Figure 3 , the clamping wrench 100 further comprises a transmission member 120, which is also arranged at the front end of the handle 110, and the transmission member 120 can be located at the rear side of the upper clamping head 130 and the lower clamping head 140. Alternatively, the upper clamping head 130 and the lower clamping head 140 are located at the most front end of the handle 110, so that the upper clamping head 130 and the lower clamping head 140 clamp the nuts, avoiding the transmission member 120 from blocking the upper clamping head 130 and the lower clamping head 140. The upper clamping head 130 is in transmission connection with the transmission member 120, and the torque wrench 200 is used to drive the transmission member 120 to move.

[0050] When adjusting the nuts by using the wrench, the handle 110 of the clamping wrench 100 is held by hand, the upper clamping head 130 and the lower clamping head 140 are respectively aligned with the upper nut and the lower nut, and the upper nut is clamped into the clamping opening of the upper clamping head 130, and the lower nut is clamped into the clamping opening of the lower clamping head 140. By the operator applying a vertical force to the torque wrench 200, the torque wrench 200 swings up and down along the direction indicated by the vertical arrow in Figure 1 , the end of the torque wrench 200 connected with the clamping wrench 100 rotates along the arc line arrow in the vertical plane as indicated by Figure 1 , drives the transmission member 120 to rotate, the transmission member 120 drives the upper clamping head 130 to rotate along the arc line arrow in the horizontal plane as indicated by Figure 1 , and then tightens or loosens the upper nut (see Figure 1 ).

[0051] It can be understood that when the wrench is applied to other scenarios, the operation mode of the wrench can also be appropriately adjusted. For example, when the wrench is applied to the scenario that the upper nut is a fixed nut and the lower nut is a locking nut, the wrench can be inverted, so that the upper clamping head 130 of the clamping wrench 100 is below the lower clamping head 140. At this time, the upper clamping head 130 of the clamping wrench 100 clamps the lower nut, the lower clamping head 140 clamps the upper nut, the torque wrench 200 swings up and down to drive the transmission member 120 to rotate, and the transmission member 120 drives the upper clamping head 130 to rotate, so as to tighten or loosen the lower nut.

[0052] When the wrench is applied to the scene where both the upper nut and the lower nut are lock nuts, the wrench can be first placed upright, the upper nut is clamped by the upper clamping head 130, and the lower nut is clamped by the lower clamping head 140. The torque wrench 200 drives the transmission member 120 to rotate by up-and-down swinging, and the transmission member 120 drives the upper clamping head 130 to rotate to tighten or loosen the upper nut. Then, the wrench is inverted, the lower nut is clamped by the upper clamping head 130, and the upper nut is clamped by the lower clamping head 140. The torque wrench 200 drives the transmission member 120 to rotate by up-and-down swinging, and the transmission member 120 drives the upper clamping head 130 to rotate to tighten or loosen the lower nut.

[0053] The wrench provided by the embodiment of the present application has the upper clamping head 130 and the lower clamping head 140 arranged on the clamping wrench 100 to clamp the upper nut and the lower nut respectively, and can be applied to the operation object with double nuts. Moreover, the transmission member 120 is arranged to drive the upper clamping head 130 to rotate, and the torque wrench 200 drives the transmission member 120 to rotate, which can convert the up-and-down swinging of the torque wrench 200 into the rotation of the upper clamping head 130.

[0054] In this way, the wrench has a small operation space and can be applied in a narrow space. Moreover, the operator only needs to exert a vertical force on the torque wrench 200 to drive the upper clamping head 130 to rotate, and the operation mode is simple, which can realize the tightening of the nut with large torque. In addition, the nut clamped by the lower clamping head 140 is fixed and not subjected to force, and the operation object at the installation position is not subjected to the tightening force, so the wrench can be applied to the operation object without force bearing.

[0055] For example, the wrench of the embodiment can be applied to the adjustable diaphragm valve described above. The spacing between each adjustable diaphragm valve on the valve block is small, and the clamping wrench 100 can be clamped on the nut of each adjustable diaphragm valve. Moreover, since the torque wrench 200 is in an up-and-down swinging movement mode, the torque wrench 200 has sufficient movement space, and the operation of the torque wrench 200 will not interfere with other adjustable diaphragm valves. In addition, during the adjustment of the upper nut, the lower clamping head 140 of the clamping wrench 100 remains fixed, the lower nut is not subjected to force, and no external force is transmitted to the ceramic tube, which can prevent the ceramic tube from being broken.

[0056] Referring to Figure 3 As shown in the figure, the handle 110 of the clamping wrench 100 can include a handle body 111 and a mounting seat 112. The handle body 111 provides a gripping position for the operator, and the mounting seat 112 is detachably connected to the front end of the handle body 111. The mounting seat 112 can serve as the installation base of the transmission member 120, the upper clamping head 130, the lower clamping head 140, and other components, and the transmission member 120, the upper clamping head 130, the lower clamping head 140, and other components are all installed on the mounting seat 112.

[0057] In this way, the components such as the transmission member 120, the upper clamping head 130 and the lower clamping head 140 can be assembled on the mounting seat 112, and the clamping head can be separated from the handle body 111. In this way, the clamping head can be assembled and disassembled conveniently, and the components of the clamping head can be maintained and replaced conveniently. In addition, the same handle body 111 can be matched with different clamping heads, so that the utilization rate of the handle body 111 can be improved, and the use cost of the wrench can be saved.

[0058] Figure 4 For Figure 1 the double-nut locking wrench along the A-A line. Figure 5 For Figure 1 the double-nut locking wrench along the B-B line. Figure 6 For the double-nut locking wrench provided by the embodiment of the present application.

[0059] As shown in Figure 3 and Figure 4 indicated, as an embodiment, the transmission mode of the worm and gear can be adopted to realize the rotation of the transmission member 120 to drive the upper clamping head 130. At this time, the transmission member 120 can be a worm 121, and the upper clamping head 130 can include a clamping head body 131 and a worm gear 132. The clamping head body 131 is used to clamp the nut, and the worm gear 132 is arranged around the outer periphery of the clamping head body 131, and the worm gear 132 is engaged with the worm 121.

[0060] As shown in Figure 4 and Figure 5 indicated, when the torque wrench 200 is connected to the clamping wrench 100, the torque wrench 200 is in transmission connection with the worm 121. By swinging the torque wrench 200 up and down, the worm 121 is driven to rotate, and the worm 121 drives the worm gear 132 engaged therewith to rotate, and the upper clamping head 130 rotates synchronously with the worm gear 132 to provide an acting force for the nut in the clamping opening of the upper clamping head 130, so as to tighten or loosen the nut. The worm 121 can extend in the horizontal direction, and the worm 121 can be coaxially arranged with the end of the torque wrench 200, so as to realize the rotation of the worm 121 driven by the torque wrench 200.

[0061] In order to mount the transmission member 120 on the mounting seat 112 of the handle 110, a bracket 150 can be arranged outside the transmission member 120, the transmission member 120 is mounted on the bracket 150, and the transmission member 120 can rotate on the bracket 150. The bracket 150 is mounted on the mounting seat 112 in a detachable manner, so as to facilitate the assembly and disassembly of the transmission member 120.

[0062] The bracket 150 can include two side end covers 151 corresponding to the two ends of the transmission member 120, and the two ends of the transmission member 120 are rotatably connected to the two side end covers 151 respectively. The two side end covers 151 are installed on the opposite sides of the mounting seat 112 to mount the transmission member 120 on the mounting seat 112, and the rotation of the transmission member 120 on the mounting seat 112 can be achieved.

[0063] For example, the two ends of the transmission member 120 can be exposed on the two side end covers 151, and the two ends of the transmission member 120 can be connected with the torque wrench 200. In this way, the assembly position of the torque wrench 200 can be selected according to the actual operation space of the operation object, so as to facilitate the operation of the operator.

[0064] In addition, the bracket 150 can also include an upper end cover 152 connected to the top ends of the two side end covers 151. The upper end cover 152, the two side end covers 151 and the mounting seat 112 jointly form a mounting cavity, and the transmission member 120 is installed in the mounting cavity. The upper end cover 152 can shield the transmission member 120 from above to improve the appearance effect of the wrench. Moreover, under the shielding effect of the upper end cover 152, the transmission member 120 can also be protected from external damage to prolong the service life of the transmission member 120.

[0065] In combination Figure 3 and Figure 5 As shown in the figure, in order to make the transmission member 120 connected to the two side end covers 151 of the bracket 150 rotate smoothly, in some embodiments, the two ends of the transmission member 120 can be sleeved with bearings 122, and the bearings 122 can abut against the corresponding side end covers 151. By sleeving the bearings 122 at the two ends of the transmission member 120, the friction between the transmission member 120 and the side end covers 151 is reduced, and the smooth and stable rotation of the transmission member 120 is ensured.

[0066] For example, the bearings 122 sleeved at the two ends of the transmission member 120 can be thrust bearings 122, which can bear the axial thrust of the rotor during rotation to ensure the axial position of the transmission member 120. In turn, the reliability and accuracy of the rotation of the transmission member 120 are improved, and the stable rotation of the transmission member 120 driving the upper clamping head 130 is ensured.

[0067] On this basis, in order to stably connect the transmission member 120 to the two side end covers 151 of the bracket 150, the two ends of the transmission member 120 can be sleeved with a check ring 123. The inner wall surface of the check ring 123 is in close contact with the transmission member 120, and the outer wall surface of the check ring 123 is in close contact with the side end cover 151, so as to stably and firmly fix the two ends of the transmission member 120 on the side end cover 151, and ensure the stability of the movement of the transmission member 120. Moreover, the check ring 123 can be arranged between the side end cover 151 and the bearing 122, and the bearing 122 can be positioned by the check ring 123.

[0068] Referring to Figure 6 As shown in the figure, when assembling the transmission member 120 on the mounting seat 112 of the handle 110, one of the side end covers 151 in the bracket 150 can be first installed on the mounting seat 112, and the corresponding end of the transmission member 120 can be sleeved with the check ring 123 and the bearing 122 in advance, and the end of the transmission member 120 is installed on the side end cover 151. Then, the bearing 122 and the check ring 123 are sequentially sleeved on the other end of the transmission member 120, the end of the transmission member 120 is installed on the other side end cover 151, and the side end cover 151 is installed on the mounting seat 112. Finally, the upper end cover 152 is connected to the top ends of the two side end covers 151.

[0069] For example, the two side end covers 151 can be connected to the mounting seat 112 by screws, rivets and the like fasteners, and the upper end cover 152 can also be connected to the two side end covers 151 by screws, rivets and the like fasteners. In this way, the side end covers 151 and the upper end cover 152 can be easily assembled and disassembled, which is conducive to the assembly and replacement of the transmission member 120 and the cooperating bearings 122, end covers and other components.

[0070] Figure 7 The assembly structure diagram of the upper clamping head provided in the embodiment of the application is shown in the figure. Referring to Figure 7 As shown in the figure, in the embodiment, the upper clamping head 130 can adopt a split structure, the clamping head body 131 and the worm gear 132 surrounding the outer periphery thereof can be separated from each other, and the clamping head body 131 can slide circumferentially along the inner wall surface of the worm gear 132. A positioning member 133 can be provided to position the clamping head body 131 and the worm gear 132, so as to realize the fixed connection of the clamping head body 131 and the worm gear 132. In this way, the orientation of the clamping head body 131 can be flexibly adjusted according to the orientation of the double nuts of the operating object, so as to facilitate the positioning of the upper clamping head 130 and the locking nut.

[0071] When the nuts are adjusted by the wrench, the clamping head body 131 can be separated from the worm wheel 132, so that the clamping head body 131 and the worm wheel 132 have a certain gap. The positions of the clamping head body 131 and the lower clamping head 140 are adjusted, so that the clamping opening of the clamping head body 131 is aligned with the locking nut, and the clamping opening of the lower clamping head 140 is aligned with the fixing nut, so that the locking nut is clamped into the clamping head body 131, and the fixing nut is clamped into the lower clamping head 140. At this time, the locking nut and the fixing nut fix the overall position of the wrench.

[0072] After the position of the clamping head body 131 is fixed by the locking nut, the clamping head body 131 is pushed towards the worm wheel 132, so that the clamping head body 131 is tightly attached to the inner wall surface of the worm wheel 132. Then, the worm wheel 132 is rotated to slide relative to the clamping head body 131, which is equivalent to the clamping head body 131 sliding along the inner wall surface of the worm wheel 132 in the circumferential direction. After the worm wheel 132 and the clamping head body 131 are aligned, the positioning member 133 is connected to the clamping head body 131 and the worm wheel 132, so that they are relatively fixed and synchronously rotated.

[0073] As an embodiment, the clamping head body 131 can be provided with a first groove 1311, and the worm wheel 132 can be provided with a second groove 1321, and the first groove 1311 and the second groove 1321 jointly enclose a positioning groove 1301. The positioning member 133 is provided with a positioning column 1331, which is inserted into the positioning groove 1301 to limit the relative movement between the clamping head body 131 and the worm wheel 132, so as to achieve fixed connection of the clamping head body 131 and the worm wheel 132.

[0074] When the separated clamping head body 131 is clamped on the locking nut and the clamping head body 131 is pushed to tightly attach to the worm wheel 132, the first groove 1311 on the clamping head body 131 and the second groove 1321 on the worm wheel 132 are usually misaligned with each other. At this time, the worm wheel 132 is rotated until the second groove 1321 on the worm wheel 132 corresponds to the first groove 1311 on the clamping head body 131, and the first groove 1311 and the second groove 1321 can jointly enclose the positioning groove 1301, so that the positioning column 1331 of the positioning member 133 can be inserted into the positioning groove 1301.

[0075] Exemplarily, two first grooves 1311 can be arranged on the clamping head body 131 at intervals, and correspondingly, two second grooves 1321 can be arranged on the worm wheel 132 at intervals. To match them, the positioning member 133 can be arranged with two positioning columns 1331 at intervals. When the clamping head body 131 is aligned with the worm wheel 132, the two first grooves 1311 of the clamping head body 131 correspond to the two second grooves 1321 on the worm wheel 132 respectively, and the two first grooves 1311 and the two second grooves 1321 together enclose two positioning grooves 1301, and the two positioning columns 1331 of the positioning member 133 are inserted into the two positioning grooves 1301 respectively. In this way, the positioning member 133 is connected with the upper clamping head 130 more reliably, and the upper clamping head 130 is balanced in force as a whole.

[0076] Figure 8 The assembly and disassembly structure diagram of the upper clamping head and the lower clamping head provided in the embodiments of the present application is provided. Referring to Figure 8 As shown in the figure, in some embodiments, the orientation of the lower clamping head 140 on the mounting seat 112 of the handle 110 can also be adjusted within a certain range, and the lower clamping head 140 is movably mounted on the mounting seat 112. In this way, the lower clamping head 140 also has a certain space for movement, which is more conducive to the alignment between the spanner and the double nuts of the operation object, and can make the spanner be clamped on the double nuts more quickly and accurately.

[0077] As an embodiment, a movable seat 160 can be provided, and the lower clamping head 140 is fixedly connected to the movable seat 160, for example, the lower clamping head 140 is attached to the inner side wall of the movable seat 160. The movable seat 160 is movably connected to the mounting seat 112, so that the movable seat 160 drives the lower clamping head 140 to move. In addition, by providing the movable seat 160 as the mounting basis of the lower clamping head 140, the movable seat 160 can also be used to realize the sliding of the worm wheel 132 on the mounting seat 112, and the worm wheel 132 can slide along the circumference of the movable seat 160.

[0078] Exemplarily, the lower clamping head 140 can be fixedly connected to the movable seat 160 by means of screws, rivets or the like locking members or by means of adhesion, welding.

[0079] In other embodiments, the movable seat 160 can not be additionally provided, and the lower clamping head 140 can be movably connected to the mounting seat 112. In this case, the lower clamping head 140 can be used to realize the sliding of the worm wheel 132 on the mounting seat 112, which is not limited in the present embodiment.

[0080] The following is described by taking an example that the movable seat 160 is movably connected to the mounting seat 112 and the lower clamping head 140 is fixedly connected to the movable seat 160.

[0081] Combined with Figure 4 and Figure 8As shown, in order to realize the circumferential sliding of the worm wheel 132 along the movable seat 160, in some embodiments, a guide piece 170 can be assembled on the movable seat 160, for example, connected to the upper end of the movable seat 160. The worm wheel 132 can be connected with the guide piece 170, and under the guidance of the guide piece 170, the worm wheel 132 slides along the circumference of the movable seat 160.

[0082] Wherein, one of the guide piece 170 and the worm wheel 132 is provided with a sliding groove 171 on the side facing the other, and the other is provided with a guide rail 1322 on the side facing the other, the guide rail 1322 matches the sliding groove 171, and both extend along the circumference of the movable seat 160. The guide rail 1322 is inserted into the sliding groove 171, and the guide rail 1322 slides along the sliding groove 171, realizing the circumferential sliding of the worm wheel 132 along the movable seat 160.

[0083] As an example, the guide piece 170 is provided with a sliding groove 171 on the side facing the worm wheel 132, and the worm wheel 132 is provided with a guide rail 1322 on the side facing the guide piece 170 (see Figure 8 As another example, the guide piece 170 is provided with a guide rail 1322 on the side facing the worm wheel 132, and the worm wheel 132 is provided with a sliding groove 171 on the side facing the guide piece 170. No matter whether the guide rail 1322 or the sliding groove 171 is provided on the worm wheel 132, the guide rail 1322 or the sliding groove 171 can be located at the bottom end of the worm wheel 132, and the worm wheel 132 as a whole can be located above the movable seat 160, without overlapping or lapping between the worm wheel 132 and the movable seat 160, so as to facilitate the pasting of the clamping head body 131 on the inner side wall of the worm wheel 132, and facilitate the cooperation of the worm wheel 132 and the worm 121.

[0084] As an example, the top of the movable seat 160 can be provided with a lapping groove 162, the bottom of the guide piece 170 abuts against the groove bottom of the lapping groove 162, and the outer side wall of the guide piece 170 abuts against the side wall of the lapping groove 162, so as to limit the guide piece 170. And the lower clamping head 140 can abut against the inner side wall of the guide piece 170. In this way, the lower clamping head 140 and the movable seat 160 sandwich the guide piece 170, and the guide piece 170 can be fixed firmly. In addition, the upper end of the lower clamping head 140 can be provided with an outward upper flange 141, and the lower clamping head 140 abuts against the top surface of the guide piece 170 through the upper flange 141 thereof. The lower end of the lower clamping head 140 can also be provided with an outward lower flange 142, and the inner side wall of the movable seat 160 is correspondingly provided with a limiting groove 163, and the lower flange 142 of the lower clamping head 140 is clamped into the limiting groove 163 of the movable seat 160. In this way, the positioning of the lower clamping head 140 on the movable seat 160 is realized.

[0085] When the guide 170 is provided with a groove 171 and the worm gear 132 is provided with a guide rail 1322, the groove 171 of the guide 170 can be exposed above the top of the movable seat 160. The guide rail 1322 on the worm gear 132 can be a flange formed at the bottom of the worm gear 132. The flange is folded on the side of the worm gear 132 facing the guide 170 and is inserted into the groove 171 of the guide 170.

[0086] Figure 9 This is an exploded structural diagram of the clamping end provided in an embodiment of this application. (Refer to...) Figure 9 As shown, regarding the movable connection between the movable base 160 and the mounting base 112 of the handle 110, in one embodiment, the mounting base 112 is provided with an adjustment groove 1121 on the side facing the movable base 160, and an adjustment part 161 extends out from the side of the movable base 160 facing the mounting base 112, extending into the adjustment groove 1121. The adjustment groove 1121 extends circumferentially along the mounting base 112, and the adjustment part 161 occupies only a portion of the space in the adjustment groove 1121. The adjustment part 161 can slide along the extending direction of the adjustment groove 1121 to allow the movable base 160 to swing within a certain range.

[0087] For example, the adjusting groove 1121 of the mounting base 112 can be an arc-shaped groove, and the adjusting part 161 of the movable base 160 can be an arc-shaped surface on one side facing the mounting base 112. The arc-shaped surface of the adjusting part 161 matches the shape and contour of the adjusting groove 1121, so that the adjusting part 161 slides smoothly and steadily in the adjusting groove 1121.

[0088] Combination Figure 4 and Figure 9 As shown, since the adjusting part 161 of the movable seat 160 can slide along the adjusting groove 1121 of the mounting base 112, in order to fix the movable seat 160 relatively, a positioning block 1122 can be inserted into the mounting base 112 to restrict the adjusting part 161 of the movable seat 160 to abut against one end of the groove wall of the adjusting groove 1121, so as to position the movable seat 160.

[0089] For ease of explanation, in this embodiment, the two ends of the extending direction of the adjusting groove 1121 of the mounting base 112 are defined as the first end and the second end, respectively. The adjusting part 161 of the movable base 160 can abut against the first end of the adjusting groove 1121, and the positioning block 1122 is inserted between the adjusting part 161 and the second end of the adjusting groove 1121. Alternatively, the adjusting part 161 of the movable base 160 can abut against the second end of the adjusting groove 1121, and the positioning block 1122 is inserted between the adjusting part 161 and the first end of the adjusting groove 1121.

[0090] Continue to refer to Figure 4 and Figure 9Since the movable seat 160 can slide along the mounting seat 112, in order to stably and reliably assemble the movable seat 160 on the mounting seat 112, the movable seat 160 and the mounting seat 112 can be inserted into each other to limit the movable seat 160 in the planar direction of the mounting seat 112. In addition, the bottom of the mounting seat 112 can also be provided with a lower end cover 180, and the lower end cover 180 covers at least part of the bottom of the movable seat 160 to support the movable seat 160 and prevent the movable seat 160 from being separated from the mounting seat 112.

[0091] For example, the lower end cover 180 covers at least the direction adjusting part 161 of the movable seat 160. Since the direction adjusting part 161 can slide along the direction adjusting groove 1121 of the mounting seat 112, the lower end cover 180 can cover the area where the direction adjusting groove 1121 of the mounting seat 112 is located. The lower end cover 180 can be connected to the bottom end of the mounting seat 112 by bolts, screws or other fasteners, so as to facilitate the assembly and disassembly of the movable seat 160 on the mounting seat 112.

[0092] On this basis, the lower end cover 180 can include an end cover body 181 and an adjusting cover 182. The end cover body 181 is provided with an adjusting hole 1811 in the area corresponding to the direction adjusting groove 1121 of the mounting seat 112, and the adjusting cover 182 is arranged in the adjusting hole 1811 and connected with the mounting seat 112. In this way, when the orientation of the movable seat 160 needs to be adjusted, the adjusting cover 182 can be disassembled without disassembling the end cover body 181, and the positioning block 1122 inserted into the direction adjusting groove 1121 of the mounting seat 112 is taken out, so as to move the direction adjusting part 161 of the movable seat 160. When the orientation adjustment of the movable seat 160 is completed, the positioning block 1122 is inserted into the direction adjusting groove 1121 of the mounting seat 112, and finally the adjusting cover 182 is connected to the mounting seat 112.

[0093] When the direction adjusting groove 1121 on the mounting seat 112 is an arc-shaped groove, the adjusting hole 1811 on the end cover body 181 can also include an arc-shaped hole part, which completely coincides with the direction adjusting groove 1121. On this basis, the adjusting hole 1811 can also include a mounting hole part, which can be in communication with the arc-shaped hole part. To match this, the adjusting cover 182 can include an arc-shaped plate part located in the direction adjusting groove 1121, and the adjusting cover 182 can also include a mounting part connected with the arc-shaped plate part, and the mounting part of the adjusting cover 182 is located in the mounting hole part of the adjusting hole 1811. The adjusting cover 182 can be locked on the mounting seat 112 by threading bolts, screws or other fasteners through the mounting part of the adjusting cover 182.

[0094] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0095] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A double-nut locking wrench, characterized by comprising: The utility model relates to a clamping wrench, comprising a handle, a transmission part, an upper clamping head and a lower clamping head; the transmission part is arranged at the front end of the handle, the upper clamping head and the lower clamping head are arranged at the front side of the transmission part, and the lower clamping head is below the upper clamping head; the upper clamping head is in transmission connection with the transmission part, and the transmission part drives the upper clamping head to rotate; a torque wrench is detachably connected to the clamping wrench; the torque wrench swings up and down and drives the transmission part to move. The upper clamping head comprises a clamping head body and a worm wheel, and the worm wheel surrounds the outer periphery of the clamping head body; The transmission part comprises a worm, and the worm is in engagement with the worm wheel, and the torque wrench drives the worm to rotate.

2. The double-nut locking wrench according to claim 1, wherein The clamping head body and the worm wheel are detachable, and the clamping head body and the worm wheel are fixedly connected through a positioning part. The clamping head body is provided with at least one first groove, the worm wheel is provided with at least one second groove, and the first groove and the second groove jointly enclose a positioning groove; 3. The dual-nut locking wrench of claim 2, wherein, The positioning part is provided with at least one positioning column, and the positioning column is inserted into the positioning groove.

4. The dual-nut locking wrench of claim 3, wherein, Further comprising: A movable seat surrounds the outer periphery of the lower clamping head and is movably connected with the handle; the worm wheel slides along the circumference of the movable seat.

5. Double-nut locking wrench according to any one of claims 2-4, characterized in that The side of the handle towards the movable seat is provided with a direction adjusting groove, the side of the movable seat towards the handle extends a direction adjusting part, and the direction adjusting part slides in the direction adjusting groove. The direction adjusting part abuts against one end groove wall of the direction adjusting groove, and a positioning block is inserted between the other end groove wall of the direction adjusting groove and the direction adjusting part.

6. The double-nut locking wrench of claim 5, wherein Further comprising:

7. The double-nut locking wrench of claim 6, wherein A lower end cover is connected with the handle and supported on the bottom of the movable seat.

8. The double-nut locking wrench of claim 6, wherein, The lower end cover comprises: An end cover body is provided with an adjusting hole, and the direction adjusting groove is located in the adjusting hole; 9. The double-nut locking wrench of claim 8, wherein, An adjusting cover is connected with the handle and located in the adjusting hole. Further comprising: A guide part is connected with the upper end of the movable seat; 10. The double-nut locking wrench of claim 5, wherein, One of the guide part and the worm wheel is provided with a sliding groove, and the other is provided with a guide rail, the guide rail is inserted into the sliding groove and slides along the sliding groove. Further comprising: Side end covers are installed on both sides of the front end of the handle, and the two ends of the transmission part are rotatably connected with the side end covers on both sides.

11. The double-nut locking wrench according to any one of claims 1-4, wherein Further comprising: Bearings are sleeved on both ends of the transmission part and abut against the side end covers; 12. The double-nut locking wrench of claim 11, wherein, Retaining rings are sleeved on both ends of the transmission part and arranged between the side end covers and the bearings. Further comprising: An upper end cover is connected with the top ends of the side end covers on both sides.

13. The double nut lock wrench according to claim 11, wherein The handle comprises: A handle body; 14. The double-nut locking wrench according to any one of claims 1-4, wherein, A mounting seat is connected with the front end of the handle body, and the transmission part, the upper clamping head and the lower clamping head are all mounted on the mounting seat. ​ ​

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