Wrench capable of being symmetrically operated by single person

Abstract

The utility model discloses a wrench capable of being operated by a single person symmetrically, which relates to the technical field of hardware tools and comprises a fork frame, the fork frame is provided with a driving rotating piece, and the driving rotating piece is in transmission connection with a first driven rotating piece and a second driven rotating piece which rotate synchronously. The first driven rotating piece and the second driven rotating piece are symmetrically installed on branches on the two sides of the fork frame respectively, and the first driven rotating piece and the second driven rotating piece are each provided with a clamping sleeve used for operating a nut or a screw head. During use, two nuts or screw heads can be symmetrically screwed by only one person, high mounting and dismounting efficiency is achieved, synchronous and symmetrical fixing is easy, and labor force is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware tools, in particular to a wrench which can be symmetrically operated by one person. Background Art

[0002] A wrench is a commonly used installation and removal tool. It is a hand tool used to turn bolts, screws, nuts, and other threaded fasteners, either through the opening or through the hole. Wrenches are usually made of structural steel, such as carbon or alloy steel.

[0003] However, existing wrenches have the following drawbacks: When installing certain demanding flange fasteners, they must be fixed symmetrically to prevent one side of the flange from tilting. Therefore, at least two people are required to hold wrenches on both sides of the flange to tighten the fixing nuts. They must also ensure that the two people tighten at the same speed and to the same degree. This method places high demands on personnel and requires two people to work together, resulting in high difficulty and wasteful labor.

[0004] Therefore, the existing technology needs to be improved. Utility Model Content

[0005] The technical problem to be solved by the present invention is that synchronous and symmetrical fixing is difficult and wastes labor. The purpose is to provide a wrench that can be operated symmetrically by one person. By adopting corresponding technical means, the wrench has the beneficial effects of being operable by one person, easy synchronous and symmetrical fixing, and saving labor.

[0006] The utility model is achieved through the following technical solutions:

[0007] A wrench for symmetrical operation by one person, comprising a fork frame, wherein the fork frame is provided with an active rotating member, and the active rotating member is transmission-connected with a driven rotating member 1 and a driven rotating member 2 that rotate synchronously with each other, the driven rotating member 1 and the driven rotating member 2 are symmetrically mounted on two side branches of the fork frame, and the driven rotating member 1 and the driven rotating member 2 are both provided with a ferrule for operating a nut or a screw head.

[0008] In the above technical solution, since the two branches of the fork are separated, the two ferrules can respectively clamp the screw heads of two symmetrical nuts or screws, and then one person rotates the active rotating part, and the active rotating part drives the driven rotating part 1 and the driven rotating part 2 to rotate synchronously, and the driven rotating part 1 and the driven rotating part 2 drive the two ferrules to rotate synchronously, and finally one person can synchronously tighten the screw heads of two symmetrical nuts or screws.

[0009] Furthermore, in the present invention, both sides of the fork frame are branched into a left support rod and a right support rod, and the left support rod and the right support rod are rotatably connected to the fork frame.

[0010] Furthermore, in the present invention, the above-mentioned active rotating member includes a rotating connecting shaft 1 that rotatably connects the fork frame, the left support rod and the right support rod. The rotating connecting shaft 1 is provided with a driving wheel 1 and a driving wheel 2. The driving wheel 1 is transmission-connected to the driven rotating member 1, and the driving wheel 2 is rotationally connected to the active rotating member 2.

[0011] Furthermore, in the present invention, the above-mentioned rotating connecting shaft 1 is also provided with a driving wheel 3, the driving wheel 3 is transmission-connected to the driving wheel 4, and the driving wheel 4 is connected to the crank.

[0012] Furthermore, in the present invention, a left extension rod is rotatably provided at one end of the left support rod away from the fork frame, and a right extension rod is rotatably provided at one end of the right support rod away from the fork frame.

[0013] Furthermore, in the present invention, the left support rod and the right support rod are respectively connected to the lower side and the upper side of the fork frame, the left extension rod is connected to the upper side of the left support rod, and the right extension rod is connected to the lower side of the right support rod.

[0014] Furthermore, in the present invention, the above-mentioned driven rotating member 1 includes a rotating connecting shaft 2 that rotatably connects the left support rod and the left extension rod and a rotating connecting shaft 3 that connects the sleeve, the rotating connecting shaft 3 is provided with a driven wheel 1, the rotating connecting shaft 2 is provided with a driven wheel 2 that is transmission-connected to the driven wheel 1, and the rotating connecting shaft 2 is also provided with a driven wheel 3 that is transmission-connected to the driving wheel 1, the driven rotating member 2 includes a rotating connecting shaft 4 that rotatably connects the right support rod and the right extension rod and a rotating connecting shaft 5 that connects the sleeve, the rotating connecting shaft 5 is provided with a driven wheel 4, the rotating connecting shaft 4 is provided with a driven wheel 5 that is transmission-connected to the driven wheel 4, and the rotating connecting shaft 4 is also provided with a driven wheel 6 that is transmission-connected to the driving wheel 2.

[0015] Furthermore, in the present invention, the driving wheel 1, the driving wheel 2, the driven wheel 1, the driven wheel 2, the driven wheel 3, the driven wheel 4, the driven wheel 5, and the driven wheel 6 are all pulleys, sprockets, or gears.

[0016] Furthermore, in the present invention, the above-mentioned ferrule is detachably connected to the driven rotating member 1 and the driven rotating member 2.

[0017] Furthermore, in the present invention, a connecting hole is provided on the top of the ferrule, and the ferrule has magnetism that attracts the driven rotating part 1 and the driven rotating part 2.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0019] When tightening a flange, one person only needs to hold a single-handed symmetrically operated wrench in one hand, align the two ferrules with the heads of two symmetrical nuts or screws, and then use the other hand to rotate the active rotating member. The active rotating member drives the driven rotating members 1 and 2 to rotate synchronously, and the driven rotating members 1 and 2 drive the two ferrules to rotate synchronously, ultimately achieving the goal of one person simultaneously tightening the heads of two symmetrical nuts or screws. Compared to the traditional method of tightening flanges with two wrenches, this method has the beneficial effects of easy fixing and reduced labor waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the examples. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can also derive other relevant drawings based on these drawings without inventive effort. In the drawings:

[0021] Figure 1 A schematic diagram of the overall structure of a wrench that can be symmetrically operated by one person provided in an embodiment of the utility model;

[0022] Figure 2 A schematic diagram of the use of a wrench provided by an embodiment of the present utility model for symmetrical operation by a single person;

[0023] Figure 3 A cross-sectional diagram of the connection between the fork frame and the left and right support rods provided in an embodiment of the present utility model;

[0024] Figure 4 A cross-sectional diagram of the connection between the left support rod and the left extension rod provided in an embodiment of the present utility model;

[0025] Figure 5 A cross-sectional diagram of the connection between the right support rod and the right extension rod provided in an embodiment of the present utility model;

[0026] Figure 6 This is a schematic structural diagram of a ferrule provided in an embodiment of the utility model.

[0027] Markings and corresponding parts names in the accompanying drawings: 1-fork frame, 101-left support rod, 1011-left extension rod, 102-right support rod, 1021-right extension rod, 2-driving rotating member, 201-rotating connecting shaft one, 202-driving wheel one, 203-driving wheel two, 204-driving wheel three, 205-driving wheel four, 3-driven rotating member one, 301-rotating connecting shaft two, 302-rotating connecting shaft three, 303-driven wheel one, 304-driven wheel two, 305-driven wheel three, 4-driven rotating member two, 401-rotating connecting shaft four, 402-rotating connecting shaft five, 403-driven wheel four, 404-driven wheel five, 405-driven wheel six, 5-ferrule, 501-connecting hole, 6-crank handle, 7-flange, 8-nut, 9-toothed belt. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The schematic implementation methods of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0029] The following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0031] In the description of the embodiments of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] Furthermore, the terms “one”, “two”, “three”, etc. are only used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0033] Furthermore, the use of terms such as "horizontal" and "vertical" does not necessarily mean that the component must be absolutely horizontal or vertical, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical", not that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0034] In the description of the embodiments of the present invention, “a plurality of” means at least 2.

[0035] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0036] Example

[0037] like Figures 1 to 6 , shown is a wrench for single-person symmetrical operation provided by an embodiment of the utility model, and the specific structure is as follows.

[0038] Figure 1 It mainly shows the bottom structure of the wrench operated symmetrically by one person. Figure 2 The top structure of the wrench for symmetrical operation by one person is mainly displayed. The wrench for symmetrical operation by one person in this embodiment mainly consists of five parts: a fork frame 1, an active rotating part 2, a driven rotating part 1 3, a driven rotating part 2 4 and a ferrule 5.

[0039] Furthermore, the main body of the fork frame 1 is a sheet-like straight bar, which can be made of aluminum alloy and has the advantages of light weight and high strength. Figure 2 The top of the fork frame 1 is rotatably connected to a left support rod 101 and a right support rod 102 as branches. The top of the left support rod 101 is rotatably connected to a left extension rod 1011, and the top of the right support rod 102 is rotatably connected to a right extension rod 1021. Two clamping sleeves 5 are respectively installed on the ends of the left extension rod 1011 and the right extension rod 1021. Since the left support rod 101 and the right support rod 102 can rotate around the fork frame 1, the left extension rod 1011 can rotate around the left support rod 101, and the right extension rod 1021 can rotate around the right support rod 102, and then the divergence of the branches of the fork frame 1 can be adjusted, that is, the distance between the two clamping sleeves 5 can be adjusted to adapt to the fastening of flanges of different sizes, and the versatility is good.

[0040] Furthermore, combined Figure 1 and Figure 2As shown, the thickness of the fork frame 1, the left support rod 101, the right support rod 102, the left extension rod 1011, and the right extension rod 1021 are consistent. The left support rod 101 is installed on the lower side of the fork frame 1, and the left extension rod 1011 is installed on the upper side of the left support rod 101. At this time, the left extension rod 1011 and the fork frame 1 are at the same level. The right support rod 102 is installed on the upper side of the fork frame 1, and the right extension rod 1021 is installed on the lower side of the right support rod 102. At this time, the right extension rod 1021 is also at the same level as the fork frame 1. Therefore, the ferrule 5 connected to the left extension rod 1011 and the right extension rod 1021 is at the same horizontal height, reducing the twisting error caused by the different heights of the ferrule 5, and achieving a better synchronous twisting effect.

[0041] In some implementations of this embodiment, Figure 3 、 Figure 4 、 Figure 5 As shown, the fork frame 1, the left support rod 101, the right support rod 102, the left extension rod 1011, and the right extension rod 1021 all have cavities inside. Figure 3 The active rotating member 2 includes a rotating connecting shaft 1 201 and a driving wheel 1 202, a driving wheel 2 203, a driving wheel 3 204 and a driving wheel 4 205. The rotating connecting shaft 1 201 is a vertical shaft that passes through the right support rod 102, the fork frame 1 and the left support rod 101 from top to bottom, so that the fork frame 1, the left support rod 101 and the right support rod 102 can rotate with each other. The driving wheel 1 202, the driving wheel 2 203 and the driving wheel 3 204 are fixedly installed on the rotating connecting shaft 1 201 from top to bottom, and the driving wheel 1 202 is located in the cavity inside the left support rod 101, the driving wheel 2 203 is located in the cavity inside the right support rod 102, and the driving wheel 3 204 is located in the cavity inside the fork frame 1. Figure 3 A crank 6 is rotatably connected to the right end of the fork frame 1, and an axis of the crank 6 passes through the fork frame 1. A driving wheel four 205 is fixedly installed at the position where the crank 6 is located in the internal cavity of the fork frame 1. The driving wheel four 205 and the driving wheel three 204 are connected through a toothed belt 9.

[0042] Further, combined Figure 1 、 Figure 3 and Figure 4As shown, the driven rotating member 1 3 is mainly composed of a rotating connecting shaft 2 301, a rotating connecting shaft 302, a driven wheel 1 303, a driven wheel 2 304, and a driven wheel 305. The driven wheel 1 303 and the driven wheel 2 304 are located in the cavity inside the left extension rod 1011, and the driven wheel 3 305 is located in the cavity inside the left support rod 101. The rotating connecting shaft 2 301 vertically passes through the right end of the left extension rod 1011 and the left end of the left support rod 101 from top to bottom, and the rotating connecting shaft 3 302 vertically passes through the left end of the left extension rod 1011. The driven wheel 1 303 is fixedly mounted on the rotating connecting shaft 3 302, and the driven wheels 2 304 and the driven wheels 3 305 are fixedly mounted on the rotating connecting shaft 2 301. The driven wheel three 305 and the driving wheel one 202 are connected to each other through a toothed belt 9 , and the driven wheel one 303 and the driven wheel two 304 are connected to each other through a toothed belt 9 .

[0043] Furthermore, combined Figure 1 、 Figure 3 and Figure 5 As shown, the driven rotating member 2 4 is mainly composed of a rotating connecting shaft 401, a rotating connecting shaft 5 402, a driven wheel 403, a driven wheel 5 404, and a driven wheel 6 405. The driven wheels 403 and 404 are located in the cavity inside the right extension rod 1021, and the driven wheel 6 405 is located in the cavity inside the right support rod 102. The rotating connecting shaft 401 vertically passes through the left end of the right support rod 102 and the right end of the right extension rod 1021 from top to bottom, the rotating connecting shaft 5 402 vertically passes through the left end of the right extension rod 1021, the driven wheel 4 403 is fixedly mounted on the rotating connecting shaft 5 402, and the driven wheels 5 404 and 6 405 are fixedly mounted on the rotating connecting shaft 401. The driven wheel six 405 and the driving wheel two 203 are connected by a toothed belt 9, and the driven wheel four 403 and the driven wheel five 404 are connected by a toothed belt 9.

[0044] It should be noted that, in order to ensure smooth rotation, lubricating oil may be applied to the rotating connecting shaft 1 201 , the rotating connecting shaft 2 301 , the rotating connecting shaft 3 302 , the rotating connecting shaft 401 , and the rotating connecting shaft 5 402 .

[0045] It should be noted that in this embodiment, the driving wheel 1 202, the driving wheel 2 203, the driven wheel 1 303, the driven wheel 2 304, the driven wheel 3 305, the driven wheel 4 403, the driven wheel 5 404, and the driven wheel 6 405 are all pulleys of the same specifications, and are connected by a belt drive. The pulleys have teeth and cooperate with the toothed belt 9 to prevent transmission slippage. In other embodiments, sprockets or gears may also be used.

[0046] In some implementations of this embodiment, the ferrule 5 is in the shape of a sleeve, such as Figure 1As shown, the front of the ferrule 5 has a hexagonal cavity for housing the hexagonal nut. Figure 6 As shown, a hexagonal connection hole 501 is provided at the center of the back of the ferrule 5. The end of the rotating connecting shaft 3 302 extending from the left extension rod 1011 is in the shape of a hexagonal prism, which can be inserted into the connection hole 501. Similarly, the end of the rotating connecting shaft 5 402 extending from the right extension rod 1021 is in the shape of a hexagonal prism, which can be inserted into the connection hole 501. A magnet is embedded in the interior of the ferrule 5, giving the ferrule 5 a magnetic attraction to the rotating connecting shaft 3 302 and the rotating connecting shaft 5 402. This allows for a detachable connection between the ferrule 5 and the driven rotating member 1 3 and the driven rotating member 2 4, facilitating the replacement of different ferrules 5 and extending the range of use.

[0047] The working principle of this utility model is as follows:

[0048] like Figure 2 As shown, according to the symmetrical distance between the nut 8 and the fixing flange 7, the left support rod 101, the left extension rod 1011, the right support rod 102, and the right extension rod 1021 of the fork frame 1 are separated to a suitable angle, so that the sleeve 5 can clamp the nut 8 that needs to be tightened. Then, one hand turns the crank handle 6, which drives the driving wheel 4 205 to rotate. The driving wheel 4 205 drives the driving wheel 3 204 to rotate via the toothed belt 9. The driving wheel 3 204 drives the driving wheel 1 202 and the driving wheel 2 203 to rotate synchronously via the rotating connecting shaft 1 201. The driving wheel 1 202 drives the driven wheel 3 305 to rotate via the toothed belt 9. The driven wheel 3 305 drives the driven wheel 2 304. The driven wheel 2 304 further drives the driven wheel 1 303 via the toothed belt 9, ultimately driving the rotating connecting shaft 3 302 and the ferrule 5 to rotate. The driving wheel 2 203 drives the driven wheel 6 405 to rotate via the toothed belt 9. The driven wheel 6 405 drives the driven wheel 5 404. The driven wheel 5 404 further drives the driven wheel 4 403 via the toothed belt 9, ultimately driving the rotating connecting shaft 5 402 and the ferrule 5 to rotate. The two ferrules 5 rotate synchronously, allowing one person to simultaneously tighten two symmetrical nuts 8 or screw heads. During disassembly, one person can also twist the two nuts 8 or the screw heads of the screws, which has good installation and disassembly efficiency.

[0049] In summary, the present invention provides a wrench that can be symmetrically operated by one person, which includes a fork frame 1. The fork frame 1 is provided with a driving rotating member 2. The driving rotating member 2 is transmission-connected to a driven rotating member 1 3 and a driven rotating member 2 4 that rotate synchronously with each other. The driven rotating member 1 3 and the driven rotating member 2 4 are symmetrically mounted on the two side branches of the fork frame 1, and the driven rotating member 1 3 and the driven rotating member 2 4 are both provided with a sleeve 5 for operating a nut 8 or a screw head. The two side branches of the fork frame 1 are a left support rod 101 and a right support rod 102, and the left support rod 101 and the right support rod 102 are rotationally connected to the fork frame 1. The driving rotating member 2 includes a rotating connecting shaft 1 201 that rotationally connects the fork frame 1, the left support rod 101, and the right support rod 102. The rotating connecting shaft 1 201 is provided with a driving wheel 1 202 and a driving wheel 2 203. The driving wheel 1 202 is transmission-connected to the driven rotating member 1 3, and the driving wheel 2 203 is rotationally connected to the driving rotating member 2. The rotating connecting shaft is also provided with a driving wheel 3 204, which is drivingly connected to a driving wheel 4 205, which is connected to a crank handle 6. A left extension rod 1011 is rotatably provided at the end of the left support rod 101 away from the fork frame 1, and a right extension rod 1021 is rotatably provided at the end of the right support rod 102 away from the fork frame 1. The left support rod 101 and the right support rod 102 are respectively connected to the lower and upper sides of the fork frame 1. The left extension rod 1011 is connected to the upper side of the left support rod 101, and the right extension rod 1021 is connected to the lower side of the right support rod 102. The driven rotating member 1 3 includes a rotating connecting shaft 2 301 rotatably connected to the left support rod 101 and the left extension rod 1011, and a rotating connecting shaft 3 302 connected to the sleeve 5, the rotating connecting shaft 3 302 is provided with a driven wheel 1 303, the rotating connecting shaft 2 301 is provided with a driven wheel 2 304 transmission-connected to the driven wheel 1 303, the rotating connecting shaft 2 301 is also provided with a driven wheel 3 305 transmission-connected to the driving wheel 1 202, the driven rotating member 2 4 includes a rotating connecting shaft 401 rotatably connected to the right support rod 102 and the right extension rod 1021, and a rotating connecting shaft 5 402 connected to the sleeve 5, the rotating connecting shaft 5 402 is provided with a driven wheel 4 403, the rotating connecting shaft 4 401 is provided with a driven wheel 5 404 transmission-connected to the driven wheel 4 403, the rotating connecting shaft 4 401 is also provided with a driven wheel 6 405 transmission-connected to the driving wheel 2 203. Driving wheel 1 202, driving wheel 2 203, driven wheel 1 303, driven wheel 2 304, driven wheel 3 305, driven wheel 4 403, driven wheel 5 404, and driven wheel 6 405 all utilize pulleys, sprockets, or gears. A ferrule 5 is detachably connected to driven rotating member 1 3 and driven rotating member 2 4. A connecting hole 501 is provided at the top of the ferrule 5, which has a magnetic attraction for driven rotating member 1 3 and driven rotating member 2 4. Therefore, the single-operated symmetrical wrench of the present utility model can be operated by one person, allows for easy and synchronous symmetrical fixing, saves labor, and improves installation and disassembly efficiency.

[0050] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A wrench that can be operated symmetrically by one person, characterized in that: The invention comprises a fork frame (1), wherein the fork frame (1) is provided with an active rotating member (2), wherein the active rotating member (2) is transmission-connected with a driven rotating member (3) and a driven rotating member (4) which rotate synchronously with each other, wherein the driven rotating member (3) and the driven rotating member (4) are symmetrically mounted on two side branches of the fork frame (1), and the driven rotating member (3) and the driven rotating member (4) are both provided with a sleeve (5) for operating a nut or a screw head.

2. The wrench for symmetrical operation by one person according to claim 1, characterized in that: The two sides of the fork frame (1) are branched into a left support rod (101) and a right support rod (102), and the left support rod (101) and the right support rod (102) are rotatably connected to the fork frame (1).

3. The wrench for symmetrical operation by one person according to claim 2, characterized in that: The active rotating member (2) includes a rotating connecting shaft (201) that is rotatably connected to the fork frame (1), the left support rod (101) and the right support rod (102); the rotating connecting shaft (201) is provided with a driving wheel (202) and a driving wheel (203); the driving wheel (202) is transmission-connected to the driven rotating member (3); and the driving wheel (203) is rotatably connected to the active rotating member (4).

4. The wrench for symmetrical operation by one person according to claim 3, characterized in that: The rotating connecting shaft 1 (201) is further provided with a driving wheel 3 (204), the driving wheel 3 (204) is transmission-connected to a driving wheel 4 (205), and the driving wheel 4 (205) is connected to a crank (6).

5. The wrench for symmetrical operation by one person according to claim 3, characterized in that: A left extension rod (1011) is rotatably provided at one end of the left support rod (101) away from the fork frame (1), and a right extension rod (1021) is rotatably provided at one end of the right support rod (102) away from the fork frame (1).

6. The wrench for symmetrical operation by one person according to claim 5, characterized in that: The left support rod (101) and the right support rod (102) are respectively connected to the lower side and the upper side of the fork frame (1); the left extension rod (1011) is connected to the upper side of the left support rod (101); and the right extension rod (1021) is connected to the lower side of the right support rod (102).

7. The wrench for symmetrical operation by one person according to claim 5, characterized in that: The driven rotating member 1 (3) includes a rotating connecting shaft 2 (301) that rotatably connects the left support rod (101) and the left extension rod (1011) and a rotating connecting shaft 3 (302) that connects the clamping sleeve (5), the rotating connecting shaft 3 (302) is provided with a driven wheel 1 (303), the rotating connecting shaft 2 (301) is provided with a driven wheel 2 (304) that is transmission-connected to the driven wheel 1 (303), and the rotating connecting shaft 2 (301) is also provided with a driven wheel 3 (305) that is transmission-connected to the driving wheel 1 (202). The driven rotating member 2 (4) includes a rotating connecting shaft 4 (401) that rotatably connects the right support rod (102) and the right extension rod (1021) and a rotating connecting shaft 5 (402) that connects the ferrule (5), the rotating connecting shaft 5 (402) is provided with a driven wheel 4 (403), the rotating connecting shaft 4 (401) is provided with a driven wheel 5 (404) that is transmission-connected to the driven wheel 4 (403), and the rotating connecting shaft 4 (401) is also provided with a driven wheel 6 (405) that is transmission-connected to the driving wheel 2 (203).

8. The wrench for symmetrical operation by one person according to claim 7, characterized in that: The driving wheel 1 (202), the driving wheel 2 (203), the driven wheel 1 (303), the driven wheel 2 (304), the driven wheel 3 (305), the driven wheel 4 (403), the driven wheel 5 (404), and the driven wheel 6 (405) all adopt pulleys, sprockets or gears.

9. The wrench for symmetrical operation by one person according to claim 1, characterized in that: The ferrule (5) is detachably connected to the driven rotating part 1 (3) and the driven rotating part 2 (4).

10. The wrench for symmetrical operation by one person according to claim 9, characterized in that: A connecting hole (501) is provided on the top of the ferrule (5), and the ferrule (5) has magnetism capable of attracting the driven rotating part 1 (3) and the driven rotating part 2 (4).

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