Fastener tightening auxiliary device and operation machine
By using the mounting base, rotating component, and auxiliary drive component of the fastener tightening auxiliary device, the safety hazards and low efficiency caused by manual lifting or raising are solved, and safe and efficient fastener tightening operation is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SANY ELECTRIC CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-17
AI Technical Summary
Fastening operations require manual lifting or raising of fasteners, which poses safety hazards and is time-consuming, labor-intensive, and inefficient.
A fastener tightening auxiliary device is provided, including a mounting base, a rotating component, and an auxiliary drive component. The auxiliary drive component provides support and stability when the rotating component is stationary, and provides assistance when the rotating component moves, reducing the force pressure on the operator and enabling rapid movement of the tightening component.
It ensures operator safety, reduces manual force application, improves tightening efficiency, and achieves time-saving and labor-saving results.
Smart Images
Figure CN224129695U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of tightening operation technology, and in particular to a fastener tightening auxiliary device and operating machinery. Background Technology
[0002] Wind power equipment components are typically fixed using fasteners (such as bolts, screws, or nuts). For example, multiple towers are installed in sequence, and adjacent towers are connected by flanges, which are then tightened with bolts.
[0003] In the existing technology, due to the large number of fasteners, the fasteners are tightened by manually lifting or supporting the tightening device (such as a hydraulic tensioner or hydraulic torque wrench) and moving it so that the tightening device tightens the fasteners in sequence.
[0004] However, the fastening operation requires manual lifting or carrying, which poses safety hazards and is time-consuming, labor-intensive, and inefficient. Utility Model Content
[0005] This application provides a fastener tightening auxiliary device and operating machinery to solve the problems of the need for manual lifting or raising during tightening operations, which poses safety hazards, is time-consuming and labor-intensive, and has low efficiency.
[0006] To achieve the above objectives, the technical solution of this application is as follows:
[0007] On one hand, this application provides a fastener tightening auxiliary device, including: a mounting base for detachable connection with a tower; a rotating assembly rotatably mounted on the mounting base and for connection with a tightening assembly; and an auxiliary drive assembly, one end of which is connected to the mounting base and the other end of which is connected to the rotating assembly. The auxiliary drive assembly has an extended state and a retracted state, and is configured to assist in pushing or pulling the rotating assembly to rotate by means of the extended or retracted state when the rotating assembly rotates.
[0008] In one possible implementation, the fastener tightening auxiliary device provided in this application includes a rotating component comprising a first rotating member, which is rotatably mounted on a mounting base in the direction of gravity. The first rotating member is used to connect with a tightening component, and an auxiliary drive component is used to assist in pushing or pulling the first rotating member to rotate downward or upward in the direction of gravity.
[0009] In one possible implementation, the fastener tightening auxiliary device provided in this application further includes a second rotating member in the rotating assembly. The second rotating member is rotatably disposed on the first rotating member in a horizontal direction, and the first rotating member is connected to the tightening assembly through the second rotating member.
[0010] In one possible implementation, the fastener tightening auxiliary device provided in this application includes a second rotating member comprising a first rotating arm and a second rotating arm. The second rotating arm is rotatably mounted on the first rotating arm in a horizontal direction, and the first rotating arm is rotatably mounted on the first rotating member in a horizontal direction. The second rotating arm is used to connect with a tightening assembly.
[0011] In one possible implementation, the fastener tightening auxiliary device provided in this application includes a first rotating arm comprising a cantilever rod and two connecting parts, the two connecting parts being respectively disposed at both ends of the cantilever rod, and the two connecting parts being respectively hinged to the second rotating arm and the first rotating component.
[0012] In one possible implementation, the width of the connecting portion of the fastener tightening auxiliary device provided in this application increases sequentially from the direction toward the cantilever bar to the direction away from the cantilever bar.
[0013] In one possible implementation, the fastener tightening auxiliary device provided in this application has an auxiliary drive component that is a hydraulic damping buffer or an elastic element.
[0014] In one possible implementation, the fastener tightening auxiliary device provided in this application has a rotating component for detachable connection with the tightening component.
[0015] In one possible implementation, the fastener tightening auxiliary device provided in this application has a magnetic element on the mounting base, which is used for magnetic connection with the tower.
[0016] On the other hand, this application also provides a working machine, including a body and a fastener tightening auxiliary device as described in any of the above embodiments, disposed on the body.
[0017] This application provides a fastener tightening auxiliary device and operating machinery. The auxiliary device includes: a mounting base for detachable connection to a tower; a rotating component rotatably mounted on the mounting base and connected to a tightening component; and an auxiliary drive component, one end of which is connected to the mounting base and the other end to the rotating component. The auxiliary drive component has an extended state and a retracted state, and is configured to assist in pushing or pulling the rotating component to rotate when it rotates, either in the extended or retracted state. When the rotating component is stationary, the auxiliary drive component provides support to maintain its stability and ensure operator safety. When force is applied to drive the rotating component to move around the mounting base, the auxiliary drive component provides assistance, reducing the operator's force application pressure, saving time and effort, thereby driving the tightening component to move to the corresponding position of the fastener for tightening. For example, when the rotating component moves upward along the direction of gravity, the auxiliary drive component retracts, providing tension to offset at least part of the weight of the rotating component and the tightening component, making it easier for the operator; when the rotating component moves downward along the direction of gravity, the auxiliary drive component extends, providing thrust, which also reduces the force applied by the operator, achieving the effect of saving effort, and enabling the tightening component to move quickly as needed, improving work efficiency. Attached Figure Description
[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0019] Figure 1 This is a schematic diagram of the fastener tightening auxiliary device provided in the embodiments of this application;
[0020] Figure 2 This is a structural schematic diagram from another perspective of the fastener tightening auxiliary device provided in the embodiments of this application;
[0021] Figure 3 This is a schematic diagram of the fastener tightening auxiliary device and tower provided in the embodiments of this application.
[0022] Explanation of reference numerals in the attached figures:
[0023] 100 - Mounting base;
[0024] 110 - Magnetic attachment;
[0025] 120 - Connector;
[0026] 130 - First connecting part;
[0027] 200-Rotating assembly;
[0028] 210 - First rotating component;
[0029] 220 - Second rotating component; 221 - First rotating arm; 201 - Cantilever rod; 202 - Connecting part; 222 - Second rotating arm;
[0030] 300 - Auxiliary driver component.
[0031] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0032] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application.
[0033] It should be noted that in the description of the embodiments of this application, the terms "upper", "lower", "inner", "outer" and other terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description, and are not intended to indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this application.
[0034] Furthermore, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0036] Wind power equipment components are typically fixed using fasteners (such as bolts, screws, or nuts). For example, multiple towers are installed in sequence, and adjacent towers are connected by flanges, which are then tightened with bolts.
[0037] In the existing technology, due to the large number of fasteners, the fasteners are tightened by manually lifting or supporting the tightening device (such as a hydraulic tensioner or hydraulic torque wrench) and moving it so that the tightening device tightens the fasteners in sequence.
[0038] However, during the fastening operation, manual lifting or hoisting is required, and the lifting or hoisting methods vary depending on the working position (e.g., two people are needed to lift the top of the tower connecting bolts, and two people are needed to lift the bottom of the yaw bolt tensioning). The long-term lifting or hoisting work is labor-intensive, time-consuming, and inefficient, and poses safety hazards.
[0039] In view of this, this application provides a fastener tightening auxiliary device and operating machinery. The auxiliary device includes: a mounting base for detachable connection to a tower; a rotating component rotatably mounted on the mounting base and connected to a tightening component; and an auxiliary drive component, one end of which is connected to the mounting base and the other end to the rotating component. The auxiliary drive component has an extended state and a retracted state, and is configured to assist in pushing or pulling the rotating component to rotate when the rotating component rotates, by means of its extended or retracted state. When the rotating component is stationary, the auxiliary drive component provides support to the rotating component, maintaining its stability and ensuring operator safety. When force is applied to drive the rotating component to move around the mounting base, the auxiliary drive component provides assistance, reducing the operator's force application pressure, saving time and effort, thereby driving the tightening component to move to the corresponding position of the fastener at different locations for tightening. For example, when the rotating component moves upward along the direction of gravity, the auxiliary drive component retracts, providing tension to offset at least part of the weight of the rotating component and the tightening component, making it easier for the operator; when the rotating component moves downward along the direction of gravity, the auxiliary drive component extends, providing thrust, which also reduces the force applied by the operator, achieving the effect of saving effort, and enabling the tightening component to move quickly as needed, improving work efficiency.
[0040] The following is combined Figures 1 to 3 The present application will be described in detail with reference to specific embodiments.
[0041] On one hand, this application provides a fastener tightening auxiliary device, including: a mounting base 100 for detachable connection with a tower 10; a rotating assembly 200 rotatably mounted on the mounting base 100 and connected to a tightening assembly 400; and an auxiliary drive assembly 300, one end of which is connected to the mounting base 100 and the other end of which is connected to the rotating assembly 200. The auxiliary drive assembly 300 has an extended state and a retracted state, and is configured to assist in pushing or pulling the rotating assembly 200 to rotate by means of the extended or retracted state when the rotating assembly 200 rotates.
[0042] Mounting base 100 provides mounting positions for rotating assembly 200 and auxiliary drive assembly 300. Rotating assembly 200 connects to tightening assembly 400, driving it to move to accommodate fasteners in different positions. Auxiliary drive assembly 300 assists in the movement of rotating assembly 200, reducing the force applied by the operator. For example, rotating assembly 200 rotates up and down along the direction of gravity, realizing the up and down rotation of the fastener tightening auxiliary device. When tightening assembly 400 needs to move upward, the operator applies force to rotating assembly 200, causing it to move upward. When the tightening component 400 moves upward, the auxiliary drive component 300 retracts, providing an upward pulling force to the rotating component 200, thus assisting in pulling the rotating component 200 upward and reducing the force required by the operator, achieving a labor-saving effect. When the tightening component 400 needs to move downward, the operator applies force to the rotating component 200, causing the rotating component 200 to move downward, thereby driving the tightening component 400 downward. At this time, the auxiliary drive component 300 extends, providing a downward pushing force to the rotating component 200, thus assisting in pushing the rotating component 200 downward and reducing the force required by the operator, achieving a labor-saving effect.
[0043] The fastener tightening auxiliary device in this embodiment provides support for the rotating component 200 when it is stationary, ensuring its stability and operator safety. When the rotating component 200 is moved around the mounting base 100, the auxiliary drive component 300 assists, reducing the operator's effort and thus moving the tightening component 400 to the corresponding position of the fastener for tightening. For example, when the rotating component 200 rotates up and down along gravity, the tightening component 400 retracts during upward movement, providing tension to offset at least part of the weight of both the rotating component 200 and the tightening component 400, reducing operator effort. During downward movement, the auxiliary drive component extends, providing thrust, similarly reducing operator effort and improving efficiency. This also allows the tightening component 400 to move quickly and as needed.
[0044] In one possible implementation, the fastener tightening auxiliary device provided in this application includes a rotating component 200 comprising a first rotating element 210, which is rotatably mounted on a mounting base 100 in the direction of gravity. The first rotating element 210 is used to connect with a tightening component 400, and an auxiliary drive component 300 is used to assist in pushing or pulling the first rotating element 210 to rotate downward or upward in the direction of gravity.
[0045] The first rotating component 210 rotates up and down along the direction of gravity, realizing the up and down rotation of the fastener tightening auxiliary device. When the tightening assembly 400 needs to move upward, the operator applies force to the first rotating component 210, causing it to move upward, thereby driving the tightening assembly 400 upward. At this time, the auxiliary drive assembly 300 retracts, providing an upward pulling force to the first rotating component 210, assisting in pulling the first rotating component 210 upward, reducing the force applied by the operator, and achieving a labor-saving effect. When the tightening assembly 400 needs to move downward, the operator applies force to the first rotating component 210, causing it to move downward, thereby driving the tightening assembly 400 downward. At this time, the auxiliary drive assembly 300 extends, providing a downward pushing force to the first rotating component 210, assisting in pushing the first rotating component 210 downward, reducing the force applied by the operator, and achieving a labor-saving effect.
[0046] In one possible implementation, the fastener tightening auxiliary device provided in this application further includes a second rotating member 220 in the rotating assembly 200. The second rotating member 220 is rotatably disposed on the first rotating member 210 in the horizontal direction, and the first rotating member 210 is connected to the tightening assembly 400 through the second rotating member 220.
[0047] The second rotating component 220 is rotatably mounted on the first rotating component 210 in a horizontal direction. The second rotating component 220 is used to realize the movement of the tightening assembly 400 in the horizontal direction. For example, the tightening assembly 400 is fixed to the inner wall of the wind turbine tower. The operator applies force to make the second rotating component 220 move horizontally around the circumference of the wind turbine tower, thereby causing the tightening assembly 400 to move around the inner circle of the wind turbine tower to tighten the bolts on the circumferential end face of the wind turbine tower in sequence.
[0048] In one possible implementation, the fastener tightening auxiliary device provided in this application includes a second rotating member 220 comprising a first rotating arm 221 and a second rotating arm 222. The second rotating arm 222 is rotatably mounted on the first rotating arm 221 in a horizontal direction, and the first rotating arm 221 is rotatably mounted on the first rotating member 210 in a horizontal direction. The second rotating arm 222 is used to connect with the tightening assembly 400.
[0049] The first rotating component 210 is rotatably mounted on the mounting base 100 in the direction of gravity, and the second rotating component 220 is rotatably mounted on the first rotating component 210 in the horizontal direction. One end of the auxiliary drive assembly 300 is connected to the first rotating component 210, and the second rotating component 220 is used to connect with the tightening assembly.
[0050] The second rotating component 220 includes a first rotating arm 221 and a second rotating arm 222. The second rotating arm 222 is rotatably mounted on the first rotating arm 221 in a horizontal direction. The first rotating arm 221 is rotatably mounted on the first rotating component 210 in a horizontal direction. The second rotating arm 222 is used to connect with the tightening assembly 400.
[0051] The first rotating arm 221 is hinged to the second cantilever 222. One end of the first rotating arm 221 is hinged to the first rotating member 210. The first rotating member 210 rotates up and down along the direction of gravity, realizing the up and down rotation of the fastener tightening auxiliary device. When the tightening assembly 400 needs to move upward, the operator applies force to the first rotating member 210, causing the first rotating member 210 to move upward, thereby driving the tightening assembly 400 to move upward. At this time, the auxiliary drive assembly 300 retracts, providing an upward pulling force to the first rotating member 210, assisting in pulling the first rotating member 222. The first rotating component 210 moves upward, reducing the force required by the operator and thus saving effort. When the tightening assembly 400 needs to move downward, the operator applies force to the first rotating component 210, causing it to move downward, which in turn drives the tightening assembly 400 downward. At this time, the auxiliary drive assembly 300 extends, providing a downward thrust to the first rotating component 210, further reducing the force required by the operator and saving effort. The tightening assembly 400 can be a hydraulic tensioner. The auxiliary drive assembly 300 can be a hydraulic damping buffer.
[0052] To expand the coverage area of the tightening assembly 400, the second rotating member 220 includes a first rotating arm 221 and a second rotating arm 222, forming a double cantilever structure. The second rotating arm 222 is rotatably mounted on the first rotating arm 221 in a horizontal direction, and the first rotating arm 221 is rotatably mounted on the first rotating member 210 in a horizontal direction. The second rotating arm 222 is used to connect with the tightening assembly 400. It is understood that a single rotating arm can only rotate around a single point, covering a circular area, while adding the second rotating arm 222 allows for the combination of two rotational movements, covering a larger annular area and even adjusting the radial distance. Moreover, when handling towers of different diameters, only the angle of the rotating arms needs to be adjusted to adapt, without changing the mechanical structure.
[0053] For example, tightening bolts on the inner wall of a wind turbine tower. Since the wind turbine tower is circular and there are multiple bolts, the tightening assembly 400 needs to be moved sequentially along the circumference. The double-arm structure allows operators to adjust the angle of the arms, enabling the tightening assembly 400 to reach positions with different radii, or to maintain an appropriate distance during circumferential movement to avoid interference with the wind turbine tower. This makes it more flexible than a single-arm structure, covering more bolt locations and reducing the number of repositioning operations.
[0054] Furthermore, for ease of adjustment, the first rotating arm 221 is longer than the second rotating arm 222. The first rotating arm 221 enables a wide range of coarse adjustments, while the second rotating arm 222 enables a small range of fine adjustments, improving adjustment efficiency and accuracy, and facilitating movement. The first rotating arm 221, being a longer arm, provides a larger displacement range, but due to the lever effect, even small angle changes result in large displacements at the end, making it more suitable for rapid adjustments. The second rotating arm 222, being a shorter arm, has smaller displacement changes, and angle adjustments have less impact on the end position, making it suitable for fine-tuning.
[0055] The first rotating arm 221 includes a cantilever rod 201 and two connecting parts 202. The two connecting parts 202 are respectively disposed at both ends of the cantilever rod 201, and the two connecting parts 202 are respectively hinged to the second rotating arm 222 and the first rotating member 210.
[0056] For example, the two connecting parts 202 are arranged opposite each other and are mirror symmetrical at both ends of the cantilever 201, which helps the first swing arm 221 to maintain balance, especially in dynamic operation, reducing vibration and unnecessary torque.
[0057] The width of the connecting part 202 increases sequentially from the direction toward the cantilever 201 to the direction away from the cantilever 201. The connecting part 202 is used to be hinged to the second rotating arm 222 and the first rotating member 210 in a one-to-one correspondence. That is, the width of the connecting part 202 increases from the side (near end) of the cantilever 201 to the hinge end (far end), forming a trapezoidal or wedge-shaped profile.
[0058] The hinge mechanism includes two hinge shafts, each corresponding to one of the two connecting parts 202. Each connecting part 202 has two hinge sleeves at its hinge end. The first rotating member 210 has a first hinge sleeve at its end facing the connecting part 202, positioned between the two hinge sleeves of one connecting part 202. The hinge sleeve, the first hinge sleeve, and the second hinge sleeve are sequentially fitted onto the hinge shaft, thus achieving hinged rotation and rotatably connecting the first rotating member 210 to the first rotating arm 221. The second rotating arm 222 has a second hinge sleeve at its end facing the connecting part 202, positioned between the two hinge sleeves of one connecting part 202. The hinge sleeve, the second hinge sleeve, and the second hinge sleeve are sequentially fitted onto the other hinge shaft, thus achieving hinged rotation and rotatably connecting the first rotating arm 221 to the second rotating arm 222. The hinge sleeve can be a bearing or a bushing, ensuring smooth rotation.
[0059] It should be noted that the rotating component 200 is used for detachable connection with the tightening component 400. The detachable connection between the rotating component 200 and the tightening component 400 enables the replacement of the tightening component 400, making it easy to adapt to different tightening components 400, such as tensioners or torque wrenches.
[0060] Furthermore, the mounting base 100 has a magnetic element 110, which is used to magnetically connect with the tower 10.
[0061] The mounting base 100 is provided with a magnetic component 110 on the side facing the tower 10. The magnetic component 110 can be a strong magnet, which is attracted to the tower. It can be disassembled by using a top screw to open it, thus achieving quick disassembly and assembly.
[0062] The mounting base 100 also includes a connector 120. The mounting base 100 is provided with a first connecting part 130, and the connector 120 passes through the first connecting part 130 and is detachably connected to the tower 10.
[0063] The connector 120 can be a bolt, and the first connecting part 130 can be a threaded hole. The bolt passes through the threaded hole to fix the mounting base 100 to the tower 10.
[0064] This application also provides a working machine, including a body and a fastener tightening auxiliary device disposed on the body. The body includes a tightening assembly 400, which is connected to a second rotating member 220 of the tightening auxiliary device. The tightening auxiliary device is used to assist in supporting the tightening assembly 400 and facilitate the movement of the tightening assembly 400. The tightening assembly 400 can be a hydraulic tensioner or a hydraulic wrench.
[0065] It should be noted that the operating machinery in this application includes, but is not limited to, engineering machinery, heavy equipment maintenance vehicles, wind power installation vessels, railway maintenance equipment, etc., such as tower cranes, whose main body is a tower crane structure and auxiliary devices are used to tighten tower section bolts; or wind power installation vessels, whose integrated hydraulic tensioners are used to tighten wind turbine tower flanges.
[0066] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.
[0067] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope.
Claims
1. A fastener tightening assist device characterized by, include: Mounting base, the mounting base being detachably connected to the tower; A rotating assembly, rotatably mounted on the mounting base, is used to connect with a tightening assembly; An auxiliary drive assembly is provided, one end of which is connected to the mounting base and the other end of which is connected to the rotating assembly. The auxiliary drive assembly has an extended state and a retracted state. The auxiliary drive assembly is configured to assist in pushing or pulling the rotating assembly to rotate through the extended state or the retracted state when the rotating assembly rotates.
2. The fastener tightening assist device according to claim 1, characterized by, The rotating assembly includes a first rotating element, which is rotatably mounted on the mounting base along the direction of gravity. The first rotating element is used to connect with the tightening assembly, and the auxiliary drive assembly is used to assist in pushing or pulling the first rotating element to rotate downward or upward along the direction of gravity.
3. The fastener tightening assist device according to claim 2, characterized by, The rotating assembly further includes a second rotating component, which is rotatably mounted on the first rotating component in a horizontal direction, and the first rotating component is connected to the tightening assembly through the second rotating component.
4. The fastener tightening auxiliary device according to claim 3, characterized in that, The second rotating component includes a first rotating arm and a second rotating arm. The second rotating arm is rotatably mounted on the first rotating arm in a horizontal direction, and the first rotating arm is rotatably mounted on the first rotating component in a horizontal direction. The second rotating arm is used to connect with the tightening assembly.
5. The fastener tightening assist device according to claim 4, characterized by, The first rotating arm includes a cantilever rod and two connecting parts. The two connecting parts are respectively disposed at both ends of the cantilever rod, and are respectively hinged to the second rotating arm and the first rotating component.
6. The fastener tightening assist device according to claim 5, characterized by, The width of the connecting part increases sequentially from the direction toward the cantilever to the direction away from the cantilever.
7. The fastener tightening assist device according to any one of claims 1 to 6, characterized in that, The auxiliary drive component is a hydraulic damping buffer or an elastic element.
8. A fastener tightening aid according to any one of claims 1 to 6, wherein, The rotating component is used for detachable connection with the tightening component.
9. The fastener tightening auxiliary device according to any one of claims 1-6, characterized in that, The mounting base has a magnetic element for magnetically connecting with the tower.
10. A type of operating machinery, characterized in that, It includes a body and a fastener tightening auxiliary device as described in any one of claims 1-9 disposed on the body.