Wrench device

Abstract

The wrench device comprises a first wrench, a second wrench, a connecting piece and a limiting piece, the second wrench comprises a second wrench head and a second handle, the second handle is connected with the second wrench head, the second wrench head is provided with a second wrench opening, the first wrench comprises a first wrench head, and the first wrench head is provided with a first wrench opening. A first wrench opening of the first wrench clamps a nut on the innermost side of a turnout, a second wrench opening of the second wrench clamps a nut on the outer side of the turnout, and the second wrench head is rotationally connected with the first wrench head through the connecting piece. Due to the fact that the geometric center of the second wrench opening serves as the rotating circle center of the second wrench head, the outer side nut is screwed down when the second wrench head rotates, the first wrench head is connected with the limiting piece, and the limiting piece is used for being connected with the environment stabilizing piece.

Description

Technical Field

[0001] The present disclosure relates to the technical field of railway turnout maintenance, and particularly to a wrench device. Background Art

[0002] The hydraulic switch indicating rod of the railway liquid has a total of 3 nuts. After the nut closest to the innermost side of the hydraulic switch, that is, the nut corresponding to the switch indication gap, is adjusted, the two outer nuts are tightened to prevent the indication gap from changing, so as to realize the real-time indication function of the switch provided by the indicating rod. According to the railway facility standard, the allowable change range of the switch indication gap shall not exceed 0.5 mm. The adjustment of the switch indication gap is an extremely delicate task. When tightening the nuts, the switch indication gap should remain unchanged.

[0003] However, when using a hydraulic wrench to tighten these 3 nuts, when tightening one nut, due to the connection relationship between the nuts, it is easy to cause the adjacent nuts to rotate accordingly, resulting in a change in the adjusted indication gap. In the prior art, it is necessary to use two hydraulic wrenches in cooperation at the same time. One wrench clamps the nut corresponding to the adjusted switch indication gap to prevent it from rotating, and the other wrench tightens the other nuts to achieve the purpose of tightening all the adjusted nuts. Although this can keep the switch indication gap unchanged, however, this tightening method requires carrying two hydraulic wrenches for each operation or fault handling, otherwise the equipment cannot be calibrated. Summary of the Invention

[0004] The present disclosure provides a wrench device to simplify the nut tightening work.

[0005] In a first aspect, the present disclosure provides a wrench device, which is characterized by comprising a first wrench, a second wrench, a connecting piece and a limiting piece;

[0006] The second wrench includes a second wrench head and a second handle, the second handle is connected to the second wrench head, and the second wrench head is provided with a second wrench opening;

[0007] The first wrench includes a first wrench head, and the first wrench head is provided with a first wrench opening;

[0008] The second wrench head is rotationally connected to the first wrench head through the connecting piece, and the second wrench head rotates relative to the first wrench head with the geometric center of the second wrench opening as the rotation center;

[0009] The first wrench head is connected to the limiting piece.

[0010] In some embodiments, the first wrench head is provided with a first sliding groove, which extends in an arc with the geometric center of the first wrench opening as the center of the circle or extends in an arc with the geometric center of the second wrench opening as the center of the circle. The second wrench head is fixedly connected to the connecting member, and the connecting member is slidably arranged in the first sliding groove. Wherein, the geometric centers of the first wrench opening and the second wrench opening are aligned in a direction perpendicular to the rotation direction of the second wrench head.

[0011] In some embodiments, the connecting member is a threaded member. A threaded structure is provided at the first end of the connecting member, and a stop portion is provided at the second end of the connecting member. The width of the stop portion is greater than the width of the connecting member. A threaded hole is formed in the second wrench head. The first end of the connecting member passes through the first sliding groove and is arranged in the threaded hole of the second wrench head, and is threadedly connected to the side wall of the threaded hole. The stop portion abuts against the side of the first wrench head facing away from the second wrench head.

[0012] In some embodiments, at least two threaded holes are formed in the second wrench head, and at least one of the threaded holes is provided with the connecting member.

[0013] In some embodiments, a first one-way ratchet is installed in the second wrench opening.

[0014] In some embodiments, the first wrench head is rotatably connected to the limiting member, and the limiting member rotates unidirectionally relative to the first wrench head.

[0015] In some embodiments, the limiting member includes a connected extension sub-member and a stabilizing sub-member. The extension sub-member is connected to the first wrench head, and the stabilizing sub-member is used to connect to an environmental stabilizing member. The extension direction of the extension sub-member intersects with the extension direction of the stabilizing sub-member.

[0016] In some embodiments, the extension sub-member is rotatably connected to the first wrench head, and the extension sub-member rotates unidirectionally relative to the second wrench head.

[0017] In some embodiments, the stabilizing sub-member extends toward the side of the first wrench head facing away from the second wrench head.

[0018] In some embodiments, the limiting member is arranged on the side of the first wrench head facing away from the second wrench head.

[0019] A wrench device provided by the present disclosure includes a first wrench, a second wrench, a connecting member, and a limiting member. The second wrench includes a second wrench head and a second handle. The second handle is connected to the second wrench head, and the second wrench head is provided with a second wrench opening. The first wrench includes a first wrench head, and the first wrench head is provided with a first wrench opening. The first wrench opening of the first wrench catches the innermost nut of the turnout, and the second wrench opening of the second wrench catches the outer nut. The second wrench head is rotatably connected to the first wrench head through the connecting member. Since the second wrench catches the outer nut, rotating the second handle drives the second wrench head to rotate relative to the first wrench head. Since the second wrench head rotates with the geometric center of the second wrench opening as the rotation center, the outer nut is tightened when the second wrench head rotates. The first wrench head is connected to the limiting member, and the limiting member is used to connect to an environmental stabilizing member. The environmental stabilizing member is a stable component in the environment where the wrench device is located, such as a turnout. Connecting the limiting member to the environmental stabilizing member can stabilize the position of the limiting member, and further stabilize the second wrench head, making it difficult for the second wrench head to be driven by the first wrench. In this way, the operator does not need to carry two wrenches separately. When tightening the outer nut with one wrench, there is no need to use another wrench to stabilize the innermost nut, which simplifies the work of tightening the outer nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the following, the present disclosure will be described in more detail based on embodiments with reference to the drawings:

[0021] Figure 1 FIG. is a schematic structural diagram of a wrench device provided by an embodiment of the present disclosure;

[0022] Figure 2 FIG. is another schematic structural diagram of a wrench device provided by an embodiment of the present disclosure;

[0023] Figure 3 FIG. is a schematic structural diagram of the second wrench provided by an embodiment of the present disclosure;

[0024] Figure 4 FIG. is a schematic structural diagram of the first wrench head provided by an embodiment of the present disclosure;

[0025] Figure 5 FIG. is a schematic structural diagram of the connecting member provided by an embodiment of the present disclosure;

[0026] Figure 6 FIG. is a schematic structural diagram of the limiting member provided by an embodiment of the present disclosure.

[0027] Reference numerals: 100, first wrench; 110, first wrench head; 111, first wrench opening; 112, first sliding groove; 200, second wrench; 210, second wrench head; 211, second wrench opening; 212, threaded hole; 220, second handle; 300, connecting member; 310, stopping portion; 320, threaded structure; 400, limiting member; 410, extending sub-member; 411, mounting hole; 420, stabilizing sub-member; 41, limiting connection head; 44, limiting fixing hole. Detailed implementation manners

[0028] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, and to fully understand how the present disclosure uses technical means to solve technical problems and the implementation process of achieving corresponding technical effects and implement accordingly, the following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. The embodiments of the present disclosure and each feature in the embodiments can be combined with each other without conflict, and the formed technical solutions are all within the protection scope of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0030] It should be noted that the steps shown in the flowchart of the drawings can be executed in a computer system such as a set of computer-executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that here.

[0031] Example 1

[0032] Figure 1 This is a schematic structural diagram of a wrench device provided by an embodiment of the present disclosure. As Figures 1 to 3As shown in the figure, a wrench device includes: a first wrench 100, a second wrench 200, a connecting member 300, and a limiting member 400;

[0033] The second wrench 200 includes a second wrench head 210 and a second handle 220. The second handle 220 is connected to the second wrench head 210, and the second wrench head 210 is provided with a second wrench opening 211;

[0034] The first wrench 100 includes a first wrench head 110, and the first wrench head 110 is provided with a first wrench opening 111;

[0035] The second wrench head 210 is rotatably connected to the first wrench head 110 through the connecting member 300, and the second wrench head 210 rotates relative to the first wrench head 110 with the geometric center of the second wrench opening 211 as the rotation center;

[0036] The first wrench head 110 is connected to the limiting member 400.

[0037] In this embodiment, the second wrench 200 is used to tighten the nut to be tightened, such as the outer nut near the turnout. The first wrench 100 is used to hold the nut near the nut to be tightened, such as the innermost nut near the turnout, so that when the nut to be tightened rotates, this nut remains stationary. The second wrench head 210 is rotatably connected to the first wrench head 110 through the connecting member 300, making the first wrench 100 and the second wrench 200 an integral body, facilitating the carrying of the wrench device. The first wrench head 110 is provided with a first wrench opening 111, and the staff inserts the nut near the nut to be tightened into the first wrench opening 111. The second wrench head 210 is provided with a second wrench opening 211, and the staff inserts the nut to be tightened into the second wrench opening 211. When it is necessary to tighten the nut to be tightened, the staff rotates the second handle 220 to drive the second wrench head 210 to rotate. Since the second wrench head 210 rotates with the geometric center of the second wrench opening 211 as the rotation center, and the geometric center of the second wrench opening 211 is also the geometric center of the nut to be tightened, the second wrench opening 211 rotates with the nut to be tightened as the rotation center, and the nut to be tightened at the rotation center in the second wrench opening 211 can be tightened. The rotation of the second wrench head 210 drives the connecting member 300 to rotate. During this process, since the first wrench head 110 is connected to the limiting member 400, and the limiting member 400 is used to connect with the environmental stabilizing member to stabilize the first wrench head 110, so that the frictional force between the first wrench head 110 and the nut near the nut to be tightened is greater than the frictional force between the nut to be tightened and its nearby nuts. When the nut to be tightened rotates, the nut near the nut to be tightened is not easily driven, so that it is not necessary to use other wrenches to stabilize the nut near the nut to be tightened during tightening, facilitating the staff to tighten the nut to be tightened.

[0038] In one embodiment, the connecting member 300 is a connecting pin.

[0039] In this embodiment, the wrench device includes a first wrench 100, a second wrench 200, a connecting member 300, and a limiting member 400. The second wrench 200 includes a second wrench head 210 and a second handle 220. The second handle 220 is connected to the second wrench head 210. The second wrench head 210 is provided with a second wrench opening 211. The first wrench 100 includes a first wrench head 110. The first wrench head 110 is provided with a first wrench opening 111. The first wrench opening 111 of the first wrench 100 catches the innermost nut of the turnout. The second wrench opening 211 of the second wrench 200 catches the outer nut. The second wrench head 210 is rotatably connected to the first wrench head 110 through the connecting member 300. Since the second wrench 200 catches the outer nut, when the second handle 220 is rotated, it drives the second wrench head 210 to rotate relative to the first wrench head 110. Since the second wrench head 210 rotates with the geometric center of the second wrench opening 211 as the rotation center, when the second wrench head 210 rotates, the outer nut is tightened. The first wrench head 110 is connected to the limiting member 400. The limiting member 400 is used to connect to an environmental stabilizing member. The environmental stabilizing member is a stable component in the environment where the wrench device is located, such as a turnout. Connecting the limiting member 400 to the environmental stabilizing member can stabilize the position of the limiting member 400, and further stabilize the second wrench head 210, so that the second wrench head 210 is not easily driven by the first wrench 100. In this way, the operator does not need to carry two wrenches separately. When tightening the outer nut with one wrench, there is no need to use another wrench to stabilize the innermost nut, which simplifies the work of tightening the outer nut.

[0040] As Figure 1 and 5 shown, in one embodiment, the first wrench head 110 is provided with a first sliding groove 112. The first sliding groove 112 extends in an arc shape with the geometric center of the first wrench opening 111 as the center or extends in an arc shape with the geometric center of the second wrench opening 211 as the center. The second wrench head 210 is fixedly connected to the connecting member 300. The connecting member 300 is slidably disposed in the first sliding groove 112. Among them, the geometric centers of the first wrench opening 111 and the second wrench opening 211 are aligned in a direction perpendicular to the rotation direction of the second wrench head 210.

[0041] In this embodiment, the geometric centers of the first wrench opening 111 and the second wrench opening 211 are on the same axis. When the second wrench head 210 rotates with the geometric center of the second wrench opening 211 as the rotation center, the plane where the rotation path of the second wrench head 210 is located is perpendicular to this axis, driving the connecting member 300 to rotate. The rotation center corresponding to the rotation arc of the connecting member 300, the geometric center of the second wrench opening 211, and the geometric center of the first wrench opening 111 are on the same axis. When the connecting member 300 is slidably disposed in the first sliding groove 112 of the first wrench opening 111, a part of the connecting member 300 in the first sliding groove 112 is in the same plane as the first wrench opening 111. The rotation center corresponding to the rotation arc of this part of the connecting member 300 coincides with the geometric center of the first wrench opening 111. The first sliding groove 112 extends in an arc shape with the geometric center of the first wrench opening 111 as the center, enabling the connecting member 300 to slide in the first sliding groove 112. The connecting member 300 slides along the extension direction of the first sliding groove 112, realizing the relative rotation of the second wrench head 210 with the geometric center of the second wrench opening 211 as the rotation center relative to the first wrench head 110.

[0042] As Figure 1 and Figure 5 shown, in an embodiment, the connecting member 300 is a screwed member. A threaded structure 320 is provided at the first end of the connecting member 300, and a stop portion 310 is provided at the second end of the connecting member 300. The width of the stop portion 310 is greater than the width of the connecting member 300. A threaded hole 212 is formed in the second wrench head 210. The first end of the connecting member 300 passes through the first sliding groove 112 and is disposed in the threaded hole 212 of the second wrench head 210 and is screwed to the side wall of the threaded hole 212. The stop portion 310 abuts against the side of the first wrench head 110 facing away from the second wrench head 210.

[0043] In this embodiment, the connecting member 300 is a screwed member. A threaded structure 320 is provided at the first end of the connecting member 300. A threaded hole 212 is formed in the second wrench head 210. The first end of the connecting member 300 is arranged in the threaded hole 212. The threaded structure 320 at the first end of the connecting member 300 is in threaded connection with the threaded hole 212 of the second wrench head 210. The middle section of the connecting member 300 is slidably arranged in the first sliding groove 112, so as to fix the connecting member 300 to the second wrench head 210. When the second wrench head 210 rotates, it drives the connecting member 300 to rotate. A stop portion 310 is provided at the second end of the connecting member 300. The width of the stop portion 310 is greater than the width of the connecting member 300. The stop portion 310 protrudes from the side wall of the connecting member 300. The width of the first sliding groove 112 is greater than the width of the connecting member 300 and less than the width of the stop portion 310. The connecting member 300 can pass through the first sliding groove 112, while the stop portion 310 cannot pass through the first sliding groove 112. The side of the first wrench head 110 facing away from the second wrench head 210 blocks the stop portion 310, so that the connecting member 300 cannot break away from the first sliding groove 112, connecting the first wrench head 110 and the second wrench head 210, and the connecting member 300 fixed to the second wrench head 210 can rotate in the first sliding groove 112 of the first wrench head 110, realizing the rotational connection between the second wrench head 210 and the first wrench head 110.

[0044] In one embodiment, the second wrench head 210 is provided with a second sliding groove. The second sliding groove extends in an arc shape with the geometric center of the second wrench opening 211 as the center of the circle. The first wrench head 110 is fixedly connected to the connecting member 300, and the connecting member 300 is slidably arranged in the second sliding groove.

[0045] In this embodiment, the geometric centers of the first wrench opening 111 and the second wrench opening 211 are on the same axis. When the second wrench head 210 rotates with the geometric center of the second wrench opening 211 as the center of rotation, the second sliding groove rotates around this axis. Since the distance between the connecting member 300 and this axis is greater than the distance between the side of the second sliding groove close to this axis and this axis, and less than the distance between the side of the second sliding groove far from this axis and this axis, that is, the distance between the connecting member 300 and this axis is between the inner ring radius and the outer ring radius of the second sliding groove, when the second sliding groove rotates, the connecting member 300 is always in the second sliding groove. Wherein, the inner ring radius is the radius of the arc-shaped side of the second sliding groove close to the geometric center of the first wrench opening 111, and the outer ring radius is the radius of the arc-shaped side of the second sliding groove far from the geometric center of the first wrench opening 111.

[0046] In one embodiment, the connecting member 300 is a screwed member. A threaded structure 320 is provided at the first end of the connecting member 300, and a stopping portion 310 is provided at the second end of the connecting member 300. The width of the stopping portion 310 is greater than the width of the connecting member 300. The first wrench head 110 is provided with a threaded hole 212. The first end of the connecting member 300 passes through the second sliding groove and is disposed in the threaded hole 212 of the first wrench head 110, and is screwed to the side wall of the threaded hole 212. The stopping portion 310 abuts against a surface of the second wrench head 210 facing away from the first wrench head 110.

[0047] In this embodiment, the connecting member 300 is a screwed member. A threaded structure 320 is provided at the first end of the connecting member 300. The first wrench head 110 is provided with a threaded hole 212. The first end of the connecting member 300 is disposed in the threaded hole 212. The threaded structure 320 at the first end of the connecting member 300 is threadedly connected to the threaded hole 212 of the first wrench head 110, thereby fixing the connecting member 300 to the first wrench head 110. When the second wrench head 210 rotates, it drives the second sliding groove to rotate, and the notch path of the second sliding groove passes through the connecting member 300. A stopping portion 310 is provided at the second end of the connecting member 300. The width of the stopping portion 310 is greater than the width of the connecting member 300. The stopping portion 310 protrudes from the side wall of the connecting member 300. The width of the second sliding groove is greater than the width of the connecting member 300 and less than the width of the stopping portion 310. The connecting member 300 can pass through the second sliding groove, but the stopping portion 310 cannot pass through the second sliding groove. A surface of the second wrench head 210 facing away from the first wrench head 110 blocks the stopping portion 310, so that the connecting member 300 cannot be disengaged from the second sliding groove, connecting the second wrench head 210 and the first wrench head 110, and the connecting member 300 fixed to the first wrench head 110 can rotate relative to the second sliding groove of the second wrench head 210, realizing the rotational connection between the second wrench head 210 and the first wrench head 110.

[0048] In one embodiment, the second wrench head 210 is provided with at least two threaded holes 212, and at least one of the threaded holes 212 is provided with the connecting member 300.

[0049] In this embodiment, in other scenarios, the nut to be tightened and the nuts in its vicinity may not be on the same axis. To flexibly adapt to different scenarios, at least two threaded holes 212 are provided in the second wrench head 210, and the distances between different threaded holes 212 and the geometric center of the second wrench opening 211 are different. When the connecting member 300 is disposed in different threaded holes 212 through the first sliding groove 112, the relative position between the first wrench 100 and the second wrench 200 can be adjusted so that the first wrench opening 111 and the second wrench opening 211 can clamp two nuts whose center lines are not on the same axis. No matter which threaded hole 212 of the second wrench head 210 the connecting member 300 is disposed in, the second wrench head 210 rotates around the geometric center of the second wrench opening 211, driving the connecting member 300 to rotate around the geometric center of the second wrench opening 211. To adapt to the rotation of the connecting member 300, the first sliding groove 112 extends in an arc shape with the geometric center of the second wrench opening 211 as the center of the circle. When the connecting member 300 rotates with the second wrench head 210, the connecting member 300 rotates around the geometric center of the second wrench opening 211, and the first sliding groove 112 extends in an arc shape with the geometric center of the second wrench opening 211 as the center of the circle, so that the rotation path of the connecting member 300 corresponds to the extension path of the first sliding groove 112. To adapt to the connecting members 300 on different threaded holes 212, corresponding first sliding grooves 112 can be provided on the first wrench head 110 for different connecting members 300, or a first sliding groove 112 with a larger width can be provided so that different connecting members 300 can all pass through the first sliding groove 112.

[0050] In one embodiment, a first one-way ratchet is installed in the second wrench opening 211.

[0051] In this embodiment, in order to facilitate tightening the nut to be tightened, a first one-way ratchet is installed in the second wrench opening 211, so that when the second wrench 200 rotates back and forth, the nut to be tightened can be rotated in the tightening direction without readjusting the position of the second wrench 200 after each rotation. The first one-way ratchet is a ratchet with an adjustable tightening direction, and the structural design of the ratchet with an adjustable tightening direction can refer to the design of the ratchet wrench with an adjustable tightening direction in the prior art.

[0052] As Figure 1 shown, in one embodiment, the first wrench head 110 is rotatably connected to the limiting member 400, and the limiting member 400 rotates unidirectionally relative to the first wrench head 110.

[0053] In this embodiment, the one-way rotation of the limiting member 400 causes the limiting member 400 to turn towards the environmental stabilizing member. When the limiting member 400 presses against the environmental stabilizing member, the limiting member 400 cannot rotate back, and the environmental stabilizing member resists the limiting member 400, preventing the limiting member 400 from rotating, thereby fixing the position of the limiting member 400, and further fixing the first wrench head 110. For example, when observing the wrench device from one side of the second wrench 200, the turnout joint is in the upper left corner, and the limiting member 400 rotates counterclockwise in a one-way manner. The limiting member 400 presses down from above towards the environmental stabilizing member, i.e., the turnout joint. When the limiting member 400 presses against the environmental stabilizing member, the environmental stabilizing member blocks the counterclockwise rotation of the limiting member 400. And since the one-way rotation direction of the limiting member 400 relative to the first wrench head 110 is counterclockwise and it cannot rotate clockwise, the limiting member 400 stops rotating, and the position of the limiting member 400 is fixed, further stabilizing the position of the first wrench head 110. At this time, the rotation direction of the first one-way ratchet is counterclockwise, and the rotation direction of the first wrench 100 is counterclockwise. When the first wrench 100 rotates counterclockwise, it will not drive the nut to be tightened to rotate. When the first wrench 100 rotates clockwise, it clamps the nut to be tightened and rotates clockwise under the action of the frictional force between the first wrench 100 and the nut to be tightened, tightening the nut to be tightened.

[0054] As Figure 6 shown, further, the limiting member 400 is provided with a mounting hole 411, and a second ratchet is mounted in the mounting hole 411. The second ratchet rotates in a one-way manner in the mounting hole 411. The first wrench 100 is provided with a protruding portion, and the protruding portion is fixedly connected to the ratchet hole of the second ratchet.

[0055] In this embodiment, the second ratchet rotates in a one-way manner in the mounting hole 411, and the limiting member 400 rotates in a one-way manner with the mounting hole 411 as the rotation center. Since the protruding portion is fixedly connected to the ratchet hole of the second ratchet, at this time, the limiting member 400 also rotates in a one-way manner with the protruding portion as the rotation center, realizing the one-way rotational connection between the limiting member 400 and the first wrench 100.

[0056] As Figure 6 shown, in one embodiment, the limiting member 400 includes a connected extension sub-member 410 and a stabilizing sub-member 420. The extension sub-member 410 is connected to the first wrench head 110, and the stabilizing sub-member 420 is used to connect to the environmental stabilizing member. The extension direction of the extension sub-member 410 intersects with the extension direction of the stabilizing sub-member 420.

[0057] In this embodiment, to facilitate the connection of the limiting member 400 to the first wrench head 110 and the environmental stabilizing member respectively, the limiting member 400 includes a connected extension sub-member 410 and a stabilizing sub-member 420. The extension sub-member 410 and the stabilizing sub-member 420 extend in different directions, enabling the limiting member 400 to be more flexibly stabilized on the environmental stabilizing member. The extension sub-member 410 extends from the first wrench head 110 to the environmental stabilizing member on a plane parallel to the first wrench head 110, and the stabilizing sub-member 420 extends on another plane intersecting the plane of the first wrench head 110, such that the stabilizing sub-member 420 penetrates one side of the environmental stabilizing member, increasing the contact area between the stabilizing sub-member 420 and the environmental stabilizing member and enhancing the stability of the connection between the stabilizing sub-member 420 and the environmental stabilizing member.

[0058] As Figure 6 shown, in one embodiment, the extension sub-member 410 is rotatably connected to the first wrench head 110, and the extension sub-member 410 rotates unidirectionally relative to the second wrench head 210.

[0059] In this embodiment, to facilitate the adjustment of the position of the limiting member 400, the extension sub-member 410 is rotatably connected to the second wrench head 210, enabling the extension sub-member 410 to rotate unidirectionally relative to the second wrench head 210 to adjust the relative position between the limiting member 400 and the environmental stabilizing member.

[0060] As Figure 6 shown, further, the extension sub-member 410 is provided with a mounting hole 411, and a second ratchet is mounted in the mounting hole 411. The second ratchet rotates unidirectionally in the mounting hole 411, and the first wrench 100 is provided with a protrusion which is fixedly connected to the ratchet hole of the second ratchet.

[0061] In this embodiment, the second ratchet rotates unidirectionally in the mounting hole 411, and the extension sub-member 410 rotates unidirectionally with the mounting hole 411 as the rotation center. Since the protrusion is fixedly connected to the ratchet hole of the second ratchet, at this time, the extension sub-member 410 also rotates unidirectionally with the protrusion as the rotation center, realizing the unidirectional rotational connection between the extension sub-member 410 and the first wrench 100.

[0062] As Figure 1 shown, in one embodiment, the stabilizing sub-member 420 extends toward the side of the first wrench head 110 facing away from the second wrench head 210.

[0063] In this embodiment, generally, the first wrench head 110 is disposed between the environmental stabilizing member and the second wrench head 210, and the environmental fixing member and the second wrench head 210 are disposed on two opposite sides of the first wrench head 110. To better stabilize the nut within the first wrench opening 111, one side of the first wrench head 110 is connected to the second wrench head 210 through a connecting member 300, and the other side of the first wrench head 110 extends into one side of the environmental stabilizing member through a stabilizing sub-member 420 and is connected to the environmental stabilizing member, such that the first wrench head 110 is stably disposed between the second wrench head 210 and the environmental stabilizing member.

[0064] As Figure 1 shown, in one embodiment, the limiting member 400 is disposed on a side of the first wrench head 110 facing away from the second wrench head 210.

[0065] In this embodiment, generally, the first wrench head 110 is disposed between the environmental stabilizing member and the second wrench head 210, and the environmental fixing member and the second wrench head 210 are disposed on two opposite sides of the first wrench head 110. To better stabilize the nut within the first wrench opening 111, one side of the first wrench head 110 is connected to the second wrench head 210 through a connecting member 300, and the other side of the first wrench head 110 is connected to the environmental stabilizing member through the limiting member 400, such that the first wrench head 110 is stably disposed between the second wrench head 210 and the environmental stabilizing member.

[0066] As Figures 1 - 2 shown, the present utility model provides a wrench for a hydraulic switch, comprising: a first wrench 100, a second wrench 200, a connecting member 300, and a limiting member 400, wherein

[0067] The first wrench 100 has a first sliding groove 112 on its surface; it can be understood that the first wrench 100 is used to hold the innermost screw among the three screws, i.e., the notched screw, to keep the notch fixed.

[0068] The second wrench 200 has a second handle 220 and a second wrench head 210 connected to the second handle 220, and a threaded hole 212 is formed on the surface of the second wrench head 210; it can be understood that the second wrench 200 is used to turn the screw outside the notch.

[0069] The connecting member 300 is connected to the first sliding groove 112 and the threaded hole 212. During operation, the second wrench head 210 of the second wrench 200 drives the connecting member 300 to rotate along the surface of the first wrench 100; it can be understood that during operation, the first wrench 100 fixes the notch in place, and the second wrench 200 drives the screw adjacent to the notch to be turned.

[0070] The limiting member 400 has one end fixed to the surface of the first wrench 100 and the other end stuck with the joint bearing of the hydraulic switch so that the first wrench 100 remains stationary when the second wrench 200 rotates. It can be understood that the stop bolt prevents the first wrench 100 from rotating simultaneously with the second wrench 200.

[0071] Furthermore, for the preparatory work: the first wrench 100 is stuck with the indicating notch, and the second wrench 200 is stuck with the screw to be tightened; during operation, the second wrench 200 is rotated instantaneously, the connecting member 300 rotates within the first sliding groove 112, and the second wrench head 210 of the second wrench 200 rotates relative to the first wrench 100. Under the action of the stop bolt, the first wrench 100 remains stationary.

[0072] Furthermore, after one stroke is in place, the second wrench 200 is rotated in the reverse direction. Due to the effect of the ratchet, when rotating in the reverse direction, it will not drive the screw to be tightened to rotate back, and the connecting member 300 returns to its initial position within the first sliding groove 112.

[0073] The wrench of this embodiment can keep the screw fixed under the first wrench 100 stationary when the second wrench 200 rotates to fix the screw.

[0074] As Figure 2 shown, in other embodiments, the stop bolt further includes: the extending sub-member includes a limiting connection head and a second connecting portion, wherein,

[0075] The limiting connection head 41 is provided with a mounting hole 43, namely a one-way ratchet hole 43. A one-way ratchet is installed in the one-way ratchet hole 43. The one-way ratchet is connected to the first wrench 100 through a pin shaft. It can be understood that the stop bolt rotates within the hole on the surface of the first wrench 100 with the pin shaft as the axis. Due to the effect of the one-way ratchet 43, it will not reverse.

[0076] The second connecting portion is provided with a limiting fixing hole 44. A stabilizing sub-member 420, namely a columnar body, is inserted into the limiting fixing hole 44 to be stuck with the joint bearing of the hydraulic switch. It can be understood that the stabilizing sub-member 420 has a certain length and can be well stuck at the joint bearing of the hydraulic switch.

[0077] Further explanation: Since the final position of the indicating notch is not fixed, during each adjustment, the position of the stabilizing sub-member 420 needs to be adjusted for fixing with the hydraulic switch.

[0078] This embodiment of the solution realizes the rotation of the stop bolt on the surface of the first wrench 100.

[0079] As Figure 1 shown, in other embodiments, the connecting member 300 further includes:

[0080] A stop portion 310, the stop portion 310 is a circular bearing adapted to the first sliding groove 112. During operation, the stop portion 310 rotates within the first sliding groove 112. It can be understood that the stop portion 310 slides smoothly within the first sliding groove 112, which can reduce the jitter, jamming, and locking phenomena during the operation of the wrench.

[0081] A threaded structure 320 is fixed within the threaded hole 212. It can be understood that the connecting member 300 is threadedly connected to the second wrench 200.

[0082] This embodiment realizes that the second wrench 200 rotates without driving the first wrench 100 to rotate.

[0083] As Figure 1 shown, in other embodiments, the shape of the opening of the first wrench 100 matches the shape of the notch screw. This embodiment realizes the immobility of the notch thread.

[0084] As Figure 1 shown, in other embodiments, the second wrench head 210 of the second wrench 200 has the same outer shape as the first wrench 100. This embodiment realizes the smooth tightening of the screw to be tightened.

[0085] As Figure 1 shown, in other embodiments, the tooth blocks on the inner side of the opening of the second wrench head 210 are movably connected to the second wrench head 210 and a spring is provided inside. This embodiment realizes that the ratchet wrench rotates in one direction to tighten the screw, and the screw does not move when rotated in the reverse direction.

[0086] The connecting member 300 passes through the first sliding groove 112 on the first wrench 100. This first sliding groove 112 actually has two layers of thickness. The threaded structure 320 of the connecting member 300 is fixed within the threaded hole 212 of the second wrench 200. Then, the part between the stop portion 310 and the threaded structure 320 moves freely in the narrowest moving gap between the first wrench head 110 and the second wrench head 210. Then, whether this part of the stop portion 310 is wider than other parts of the pin. This stop portion 310 is stuck on the widest first sliding groove 112 of the first wrench 100, which ensures that the connecting member 300 and the second wrench 200 will not fall off.

[0087] The function of the limiting member 400 on the first wrench 100 is not to fix the first wrench 100. The function of the limiting member 400 is to play a limiting role. When the first wrench 100 is stuck on the first nut, in order to prevent the first nut from rotating as the second nut is tightened, the limiting member 400 is used to hold the joint bearing, so the first wrench 100 will not rotate accordingly. The limiting member 400 is an L-shaped one.

[0088] When the first wrench 100 is stuck on the first nut, it depends on this limiting member 400 to be clamped. However, the position of the nut (that is, the hexagonal side) is arbitrary. When the first wrench 100 is stuck on the first nut, there may be a large gap between the limiting member 400 and the spherical plain bearing. At this time, the mounting hole 411 is designed as a one-way ratchet hole, which can only rotate counterclockwise, so that the limiting member 400 is as close as possible to the spherical plain bearing A, so that neither the first wrench 100 nor the first nut rotates.

[0089] The mounting hole 411 of the limiting member 400, that is, the one-way ratchet hole, can only rotate counterclockwise. The second wrench 200 can also rotate counterclockwise. When the second wrench 20000 turns the long handle clockwise, the second nut is tightened. When the second nut is screwed to a position where there is a block, it is possible to directly rotate the second wrench 200 counterclockwise to achieve square inversion without removing the second wrench 200. The connecting member 300 is allowed to rotate in the first sliding groove 112 of the first wrench 100. The limiting member 400 is a one-way ratchet wrench, and only the ratchet hole of this wrench is welded to the protruding pin shaft of the first wrench 100 to achieve the function of the limiting member 400 rotating counterclockwise. The stop bolt is actually a ratchet wrench, and the ratchet part of the ratchet wrench is welded to the protruding pin shaft of the first wrench 100 to form the limiting member 400.

[0090] The ratchet hole of the wrench is welded to the pin shaft, so the limiting member 400 and the first wrench 100 are equivalent to a whole.

[0091] The stabilizing sub-member 420, that is, the cylinder, will not rotate in the hole of the limiting fixing hole 44. It can be screwed into a whole, or directly made into a whole when making this thing.

[0092] The stabilizing sub-member 420, that is, the position where the cylinder is placed, is the spherical plain bearing. The limiting member 400 can only rotate counterclockwise. At this time, when the second wrench 200 tightens the screw, it is tightening clockwise, driving the first wrench 100 to also want to rotate clockwise. However, the limiting member 400 cannot rotate clockwise at this time, so the force is transmitted to the stabilizing sub-member 420. But the stabilizing sub-member 420 is stuck on this spherical plain bearing, restricting the relative positions of the first wrench 100 and the spherical plain bearing A, so the purpose that the first nut cannot move is achieved.

[0093] The pin shaft welded to the mounting hole 411 cannot rotate on the first wrench 100. This so-called pin shaft is actually a protruding point of the first wrench 100. The ratchet hole 43 of the stabilizing sub-member 420 is welded to the pin shaft, so the stop bolt rotates with the pin shaft as the center or support point. Put your finger into the mounting hole 411, and the stop bolt can also rotate around the finger.

[0094] In this embodiment, there are three fastening screws on the right side of the spherical plain bearing. Generally, a tool is used to keep the nut closest to the spherical plain bearing stationary, and the second and third nuts are tightened. The first wrench has clamped the nut closest to the spherical plain bearing, and there is also a limiting member on the first wrench, and a one-way ratchet hole is provided on the limiting member. By tightening the nut closest to the spherical plain bearing, the adjustment of the switch gap value is realized. In reality, when the nut closest to the spherical plain bearing is adjusted and then the second nut is adjusted, the nut closest to the spherical plain bearing often changes accordingly, and another tool is needed to clamp this nut, which is rather cumbersome. The second wrench 200 is an open-end ratchet wrench. An open-end ratchet wrench is an open ratchet wrench, and this kind of wrench can be clamped on the nut and keep turning without taking out the wrench.

[0095] The limiting member 400 is fixed on the first wrench 100. The first wrench 100 is an open-end wrench. The open-end wrench and the open-end ratchet wrench are connected by a connecting member 300, and the connecting member 300 is a connecting pin. There is a first sliding groove 112 on the open-end wrench. The threaded structure 320 of the connecting pin is fixed in the threaded hole 212 of the open-end ratchet wrench. In this way, when the long handle of the open-end ratchet wrench is pulled by hand, the stop portion 310 of the connecting pin slides smoothly in the first sliding groove 112 of the first wrench 100. In this way, while the second nut is being tightened, the first nut remains stationary. The stabilizing sub-member 420, that is, the columnar body, is rotatably installed in the limit fixing hole 44, or the stabilizing sub-member 420 and the extending sub-member 410 can be made into an integral body. Therefore, when the stabilizing sub-member 420 clamps the switch spherical plain bearing, the extending sub-member 410 cannot rotate around the stabilizing sub-member 420, because after the stabilizing sub-member 420 is rotatably installed in the limit fixing hole 44, the stabilizing sub-member 420 and the stop bolt have been tightened into an integral body. It is recommended to make this part into an integral body. This was designed to be disassembled at that time, but in fact, it is not necessary to disassemble.

[0096] The limiting member 400 is actually made of a one-way ratchet. The limiting member 400 and the first wrench 100 are connected and fixed by a pin shaft. The one-way ratchet installed in the limiting member 400 is fixedly connected to the first wrench 100, while the limiting member 400 itself can rotate unidirectionally. When the one-way ratchet installed in the limiting member 400 is connected to the first wrench 100 in a non-rotatable direction, at this time, the first wrench 100 and the limiting member 400 are an integral body. Therefore, when the long handle of the open-end ratchet wrench is pulled by hand to tighten the second nut, the second nut reaches the tightening purpose. At this time, under the action of friction, the second nut drives the nut closest to the spherical plain bearing to rotate. At this time, since the first wrench clamps this nut and the limiting member 400 clamps the spherical plain bearing, and the first wrench 100 and the limiting member 400 are also an integral body, only the second nut rotates in the tightening direction, while the nut closest to the spherical plain bearing does not move.

[0097] In other embodiments, the wrench is made of chrome vanadium steel. Chrome vanadium steel performs excellently in terms of high temperature resistance, corrosion resistance, and hardness, and is suitable for use as an outdoor tool.

[0098] Through the description of multiple embodiments of a wrench for a hydraulic switch of the present utility model, it can be seen that an embodiment of a wrench for a hydraulic switch has at least one or more of the following advantages:

[0099] 1. Through the cooperation of an open-end wrench and a ratchet open-end wrench, the present utility model can tighten the switch thread with one tool without carrying two wrenches;

[0100] 2. The present utility model fixes the indicating notch through the open-end wrench, and repeatedly rotates the open-end ratchet wrench to tighten the bolt, without repeatedly calibrating the accuracy of the indicating notch, thus improving work efficiency;

[0101] 3. The present utility model has a simple structure and is convenient for disassembly and assembly.

[0102] It should be noted that in this disclosure, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "including one..." do not exclude the existence of additional identical elements in the process, method, article or device including the elements.

[0103] Although the disclosed embodiments are as above, the above content is only an embodiment adopted for the convenience of understanding this disclosure and is not used to limit this disclosure. Any person skilled in the art within the technical field to which this disclosure pertains can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed by this disclosure. However, the scope of patent protection of this disclosure shall still be subject to the scope defined by the appended claims.

[0104] The solution of this application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have their own focuses. For parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the specification are not necessarily essential to this application. Additionally, it can be understood that the steps in the method embodiments of this application can be adjusted, combined, and deleted according to actual needs, and the modules in the device embodiments of this application can be combined, divided, and deleted according to actual needs.

[0105] The embodiments of the present application have been described above. The above description is exemplary and not exhaustive, and is also not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to technologies in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A wrench device, characterized in that, It includes a first wrench, a second wrench, a connecting member and a limiting member; The second wrench includes a second wrench head and a second handle. The second handle is connected to the second wrench head, and the second wrench head is provided with a second wrench opening; The first wrench includes a first wrench head, and the first wrench head is provided with a first wrench opening; The second wrench head is rotatably connected to the first wrench head through the connecting member, and the second wrench head rotates relative to the first wrench head with the geometric center of the second wrench opening as the rotation center; The first wrench head is connected to the limiting member.

2. The wrench device according to claim 1, characterized in that, The first wrench head is provided with a first sliding groove. The first sliding groove extends in an arc with the geometric center of the first wrench opening as the center or extends in an arc with the geometric center of the second wrench opening as the center. The second wrench head is fixedly connected to the connecting member, and the connecting member is slidably arranged in the first sliding groove. Wherein, the geometric centers of the first wrench opening and the second wrench opening are aligned in a direction perpendicular to the rotation direction of the second wrench head.

3. The wrench device according to claim 2, characterized in that, The connecting member is a screwed member. The first end of the connecting member is provided with a threaded structure, and the second end of the connecting member is provided with a stop portion. The width of the stop portion is greater than the width of the connecting member. The second wrench head is provided with a threaded hole. The first end of the connecting member passes through the first sliding groove and is arranged in the threaded hole of the second wrench head and is screwed to the side wall of the threaded hole, and the stop portion abuts against the side of the first wrench head facing away from the second wrench head.

4. The wrench device according to claim 3, characterized in that, The second wrench head is provided with at least two threaded holes, and at least one of the threaded holes is provided with the connecting member.

5. The wrench device according to claim 1, wherein A first one-way ratchet is installed in the second wrench opening.

6. The wrench device according to claim 1, wherein The first wrench head is rotatably connected to the limiting member, and the limiting member rotates unidirectionally relative to the first wrench head.

7. The wrench device according to claim 1, wherein The limiting member includes an extended sub-member and a stabilizing sub-member connected to each other. The extended sub-member is connected to the first wrench head, and the stabilizing sub-member is used to connect to an environmental stabilizing member. The extending direction of the extended sub-member and the extending direction of the stabilizing sub-member intersect.

8. The wrench device according to claim 7, wherein, The extended sub-member is rotatably connected to the first wrench head, and the extended sub-member rotates unidirectionally relative to the second wrench head.

9. The wrench device according to claim 7, wherein, The stabilizing sub-member extends towards the side of the first wrench head facing away from the second wrench head.

10. The wrench device according to any one of claims 1-9, characterized in that, The limiting member is arranged on the side of the first wrench head facing away from the second wrench head.

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