Fastening device and crane thereof
By designing a fastening device for steel wire ropes, the cooperation between rotating parts and limiting parts is used to solve the problems of limited adjustment range and complicated operation of steel wire ropes in the prior art, and effective tightening and stability guarantee for long-length steel wire ropes are achieved.
Patent Information
- Application Number
- CN202420742769.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-04-10
AI Technical Summary
The existing flower basket bolts have limited adjustment range for wire ropes and are cumbersome to operate, making it difficult to effectively solve the problems of intermediate bending and hanging caused by excessive length of wire ropes during use.
A fastening device is designed, including a fixing frame and a rotating member. By penetrating the rotating member through the fixing frame and passing the wire rope through a specific through hole, the wire rope is tightened by multiple continuous rotations of the rotating member. At the same time, the stable tightening state of the wire rope is ensured through the cooperation of the limiting member and the elastic member.
It realizes effective tightening of long-length wire ropes, simple and convenient operation, ensures the stability of the wire ropes and reduces safety hazards.
Smart Images
Figure CN222615921U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a fastening device, in particular to a fastening device for tightening and fixing a steel wire rope of a crane and the crane. Background Art
[0002] Steel wire ropes are often used in the fields of construction, agriculture, etc. Some of these steel wire ropes are used for safety protection, some are used for lifting heavy objects, and some are used for cable wind fixing. Steel wire ropes are usually long when used, and they usually bend and sag in the middle. Large sags or bends will pose safety hazards and even cause accidents.
[0003] In the related art, a turnbuckle bolt is usually used to tighten and adjust the wire rope. During the adjustment process, the wire rope is usually divided into two sections. The two ends of the wire rope that are far away from each other are fixed to other structures, and the two ends of the two sections of the wire rope that are close to each other are respectively connected to the two ends of the turnbuckle bolt. The wire rope is tightened by adjusting the turnbuckle bolt. However, the adjustment range of the turnbuckle bolt for the wire rope is limited, and the two ends need to be fixed multiple times, which is a cumbersome operation. Summary of the invention
[0004] Based on this, it is necessary to provide a fastening device for tightening and fixing the wire rope of the crane and the crane to address the problem that the adjustment range of the wire rope by the basket bolt is limited.
[0005] The utility model is implemented by the following technical scheme: a fastening device, which is used to tighten a wire rope, comprising: a fixed frame and a rotating member. The fixed frame comprises: a first side plate, a second side plate, a third side plate and a fourth side plate. The first side plate and the second side plate are arranged opposite to each other, the third side plate and the fourth side plate are arranged opposite to each other, and the first side plate is provided with a first through hole, the second side plate is provided with a second through hole, the third side plate is provided with a third through hole, the fourth side plate is provided with a fourth through hole, and the third through hole and the fourth through hole are arranged opposite to each other. The rotating member passes through the third through hole and the fourth through hole, and the rotating member is provided with a fifth through hole. The wire rope of the crane passes through the first through hole, the fifth through hole and the second through hole, and the rotating member is rotated to wind and tighten the wire rope.
[0006] The utility model passes the rotating member through the fixed frame, and passes the steel wire rope through the first through hole, the fifth through hole and the second through hole, so that when the rotating member is driven to rotate, the rotating member can drive the steel wire rope to rotate together, so that the loose steel wire rope can be tightened. Since the rotating member can be rotated continuously for multiple times, the steel wire rope with a long length can be tightened, and the operation is simple and convenient. The steel wire rope is connected to the fastening device by a threading method, and the connection method is simple.
[0007] In one embodiment, the first through hole and the second through hole are arranged opposite to each other.
[0008] In one embodiment, the fastening device also includes a limit member, which is arranged on the outer side of the third side plate, and a sixth through hole is provided on the limit member, and the sixth through hole is arranged opposite to the third through hole, and one end of the rotating member passes through the sixth through hole and selectively cooperates with the limit member.
[0009] In one embodiment, a first limiting portion is provided on the limiting member, and a second limiting portion is provided at one end of the rotating member, and the second limiting portion selectively cooperates with the first limiting portion in a direction along the rotation axis of the rotating member.
[0010] In one embodiment, the other end of the rotating member passes through the fourth side plate and extends to the outside of the fourth side plate, the other end of the rotating member is connected to a fastener, an elastic member is arranged between the fastener and the fourth side plate, and the elastic member is sleeved on the rotating member to generate a restoring force when the rotating member moves along the direction of its rotation axis.
[0011] In one embodiment, the first limiting portion is configured as a limiting groove, and the second limiting portion is configured as a limiting plate.
[0012] In one embodiment, the limiting groove is configured as a straight groove.
[0013] In one embodiment, the limiting groove includes: a plurality of straight grooves, and the plurality of straight grooves are cross-arranged, and the limiting plate selectively cooperates with any of the straight grooves to limit the position.
[0014] In one of the embodiments, the limiting plate is a flat structure, and a portion of the limiting plate close to the limiting slot cooperates with the limiting slot, and a portion of the limiting plate away from the limiting slot cooperates with the hand.
[0015] In one embodiment, the other end of the rotating member is provided with an external thread, and the fastener is provided with an internal thread, and the internal thread is matched with the external thread.
[0016] The utility model also provides a crane, which adopts any of the above-mentioned fastening devices to tighten and fix the steel wire rope of the crane.
[0017] Compared with the prior art, the utility model has the following beneficial effects:
[0018] 1. The fastening device is configured such that the rotating member passes through the fixed frame, and the steel wire rope passes through the first through hole, the fifth through hole, and the second through hole. When the rotating member is driven to rotate, the rotating member can drive the steel wire rope to rotate together, so that the loose steel wire rope can be tightened. Since the rotating member can be rotated continuously for multiple times, the steel wire rope with a long length can be tightened. The operation is simple and convenient. Moreover, the steel wire rope is connected to the fastening device by a threading method, and the connection method is simple.
[0019] 2. The fastening device is provided with an elastic member between the fastener and the fourth side plate, so that when the rotating member tightens the steel wire rope, the elastic member is in a compressed state. When the steel wire rope completes the tightening work, the rotating member is released, and the rotating member will re-match with the limiting member under the action of the restoring force of the spring, thereby making the rotating member more stable, and further ensuring the tightening state of the steel wire rope.
[0020] 3. The fastening device sets the limit groove as a cross structure of multiple straight grooves. Even if the tightening of the wire rope is completed, the angle of the limit plate cannot be completely matched with any straight groove in the limit groove. Then, the limit plate only needs to be rotated a relatively small angle to make the limit plate and the limit groove match. In this way, the angle that the limit plate rotates to match the limit groove can be reduced, that is, the release angle of the tightened wire rope can be reduced, so that the tightened state of the wire rope can be better maintained. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a three-dimensional structural schematic diagram of a fastening device of the utility model;
[0022] Figure 2 It is a structural schematic diagram of the rotating part in the utility model;
[0023] Figure 3 It is a cross-sectional view of the fixing frame in the utility model;
[0024] Figure 4 It is a side view of the fixing frame in the utility model.
[0025] Main component symbols
[0026] 10. Fixed frame; 11. First side plate; 111. First through hole; 12. Second side plate; 121. Second through hole; 13. Third side plate; 131. Third through hole; 14. Fourth side plate; 141. Fourth through hole; 2. Rotating member; 21. Fifth through hole; 22. Second limiting portion; 3. Limiting member; 31. Sixth through hole; 32. First limiting portion; 4. Fastener; 5. Elastic member.
[0027] The above main component symbols are combined with the accompanying drawings and specific implementation methods to further illustrate the present invention in detail. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] See also Figure 1-4 This embodiment provides a fastening device for tightening a steel wire rope (which may be a steel wire rope of a mechanical device such as a crane or a tower crane), and the fastening device includes: a fixed frame 10 and a rotating member 2. The fixed frame 10 mainly plays the role of installation and support, and can provide an installation position for the corresponding components and can provide support for the steel wire rope. The rotating member 2 mainly plays the role of rotation and is mainly used to tighten the steel wire rope. The rotating member 2 is a rotating shaft, and can also be other suitable components.
[0030] like Figure 1 , Figure 3 and Figure 4 As shown, the fixing frame 10 includes: a first side plate 11, a second side plate 12, a third side plate 13 and a fourth side plate 14, the first side plate 11 and the second side plate 12 are arranged opposite to each other, the third side plate 13 and the fourth side plate 14 are arranged opposite to each other, and the first side plate 11 is provided with a first through hole 111, the second side plate 12 is provided with a second through hole 121, the third side plate 13 is provided with a third through hole 131, and the fourth side plate 14 is provided with a fourth through hole 141, and the third through hole 131 is arranged opposite to the fourth through hole 141. Among them, the first side plate 11, the second side plate 12, the third side plate 13 and the fourth side plate 14 all mainly play the role of installation and support.
[0031] The first side panel 11 and the second side panel 12 are arranged opposite to each other, that is, the first side panel 11 and the second side panel 12 are arranged in parallel. Similarly, the third side panel 13 and the fourth side panel 14 are arranged opposite to each other, that is, the third side panel 13 and the fourth side panel 14 are arranged in parallel. In this way, the first side panel 11, the second side panel 12, the third side panel 13 and the fourth side panel 14 are combined and installed together to form four side walls of the fixed frame 10, which are used to support and install corresponding components, specifically, the wire rope and the rotating member 2 can be installed and supported.
[0032] The first through hole 111 and the second through hole 121 mainly play the role of guiding and passing. The steel wire rope can pass through the first through hole 111 and the second through hole 121 under the guidance of the first through hole 111 and the second through hole 121, so as to facilitate the subsequent tightening operation of the steel wire rope.
[0033] The rotating member 2 passes through the third through hole 131 and the fourth through hole 141, and a fifth through hole 21 is provided on the rotating member 2. The steel wire rope passes through the first through hole 111, the fifth through hole 21 and the second through hole 121. The rotating member 2 is rotated to wind and tighten the steel wire rope.
[0034] Among them, the rotating member 2 is set to pass through the third through hole 131 and the fourth through hole 141, so that the rotating member 2 can be installed, making the setting of the rotating member 2 more reliable and stable, so that the rotating member 2 can rotate better. The fifth through hole 21 mainly plays the role of guiding and piercing. When installing the wire rope, one end of the wire rope can be passed through the first through hole 111, the fifth through hole 21 and the second through hole 121. After the wire rope is installed, the rotating member 2 is rotated. Since the wire rope passes through the fifth through hole 21, the wire rope will rotate with the rotating member 2 at this time, and then the wire rope can be wound around the rotating member 2. Since the rotating member 2 can be rotated continuously for multiple times, the rotating member 2 can tighten the wire rope with a longer length.
[0035] By passing the rotating member 2 through the fixed frame 10 and passing the steel wire rope through the first through hole 111, the fifth through hole 21 and the second through hole 121, when the rotating member 2 is driven to rotate, the rotating member 2 can drive the steel wire rope to rotate together, so that the loose steel wire rope can be tightened. Since the rotating member 2 can be rotated continuously for multiple times, the steel wire rope with a longer length can be tightened. The operation is simple and convenient, and the steel wire rope is connected to the fastening device by a threading method, and the connection method is simple.
[0036] like Figure 1 and Figure 3 As shown, the first through hole 111 and the second through hole 121 are arranged opposite to each other. That is to say, the first through hole 111 and the second through hole 121 are arranged concentrically, so that when the rotating member 2 drives the steel wire rope to rotate, the two ends of the steel wire rope that are in contact with the first through hole 111 and the second through hole 121 are on the same plane, which can reduce the friction between the first through hole 111, the second through hole 121 and the steel wire rope, thereby protecting the steel wire rope. It should be noted that when winding and tightening the steel wire rope, in order to better achieve the tightening effect, the first through hole 111, the fifth through hole 21 and the second through hole 121 need to be arranged concentrically, that is, the first through hole 111, the fifth through hole 21 and the second through hole 121 need to be aligned, which is convenient for tightening the steel wire rope and further avoids damage to the steel wire rope.
[0037] like Figure 1 As shown, the fastening device also includes a limit member 3, which is arranged on the outer side of the third side plate 13. A sixth through hole 31 is arranged on the limit member 3, and the sixth through hole 31 is arranged opposite to the third through hole 131. One end of the rotating member 2 passes through the sixth through hole 31 and selectively cooperates with the limit member 3.
[0038] The position-limiting member 3 mainly plays the role of position-limiting cooperation. The position-limiting member 3 is arranged on the outside of the third side plate 13, so that the position-limiting member 3 can be fixed, making the setting of the position-limiting member 3 more reliable and stable, and this can also avoid the interference between the position-limiting member 3 and the wire rope, making the winding and tightening of the wire rope smoother. The sixth through hole 31 mainly plays the role of penetration installation, and the sixth through hole 31 is arranged opposite to the third through hole 131, that is, the sixth through hole 31 is arranged concentrically with the third through hole 131, which is convenient for the installation and setting of the rotating member 2.
[0039] Specifically, one end of the rotating member 2 can pass through the third through hole 131 and the sixth through hole 31 in sequence. One end of the rotating member 2 selectively cooperates with the limiting member 3, that is, one end of the rotating member 2 may not cooperate with the limiting member 3. It should be noted that when the wire rope needs to be wound and tightened, the rotating member 2 and the limiting member 3 are disengaged, and the rotating member 2 can rotate freely, so that the wire rope can be wound and tightened. Of course, one end of the rotating member 2 can also cooperate with the limiting member 3. When the tightening work of the wire rope is completed, the rotating member 2 can choose to cooperate with the limiting member 3, so that the free rotation of the rotating member 2 can be limited by the limiting member 3, so that the state of the tightened wire rope is more stable.
[0040] like Figure 1 and Figure 3 As shown, the limiting member 3 is provided with a first limiting portion 32, and one end of the rotating member 2 is provided with a second limiting portion 22, and the second limiting portion 22 selectively cooperates with the first limiting portion 32 in the direction of the rotation axis of the rotating member 2. Among them, the first limiting portion 32 and the second limiting portion 22 can both play a limiting role. The first limiting portion 32 is provided on the limiting member 3, and the second limiting portion 22 is provided on the rotating member 2, so that the limiting member 3 and the rotating member 2 can be limited by the cooperation of the first limiting portion 32 and the second limiting portion 22.
[0041] Specifically, when the steel wire rope needs to be wound, the rotating member 2 moves along the direction of its rotation axis. As the rotating member 2 moves, the second limit portion 22 on the rotating member 2 will gradually disengage from the first limit portion 32 on the limit member 3. When the second limit portion 22 is completely disengaged from the first limit portion 32, the rotating member 2 can rotate freely, so that the steel wire rope can be wound to achieve the tightening of the steel wire rope. When the tightening of the steel wire rope is completed, the rotating member 2 moves in the opposite direction along the direction of its rotation axis. As the rotating member 2 moves, the second limit portion 22 on the rotating member 2 will gradually cooperate with the first limit portion 32 on the limit member 3, so that the free rotation of the rotating member 2 can be limited, so that the tightened steel wire rope is in a more stable state.
[0042] It should be noted that when the wire rope is fully tightened, the angle of the second limit portion 22 may not be able to fully cooperate with the first limit portion 32. At this time, the angle of the second limit portion 22 can be appropriately adjusted to match the first limit portion 32.
[0043] like Figure 3 and Figure 4 As shown, the first limiting portion 32 is configured as a limiting groove, and the second limiting portion 22 is configured as a limiting plate. In other words, the first limiting portion 32 can be designed as a limiting groove structure, and the second limiting portion 22 can be designed as a limiting plate structure, and the limiting plate and the limiting groove are plugged together for limiting, which has a simpler structure, is convenient to match, and has a low processing cost.
[0044] like Figure 3 and Figure 4 As shown, the limit groove is constructed as a straight groove. Designing the limit groove as a straight structure makes the design simpler and easier to process and set.
[0045] like Figure 1 As shown, the limit plate can be a flat structure, and the part of the limit plate close to the limit slot cooperates with the limit slot, and the part of the limit plate away from the limit slot cooperates with the hand. The limit plate is designed to be a flat structure, so that the structure of the limit plate can better cooperate with the limit slot. The part of the limit plate close to the limit slot cooperates with the limit slot, and the part of the limit plate away from the limit slot cooperates with the hand, that is, the limit plate can be divided into two parts, and the part of the limit plate close to the limit slot cooperates with the limit slot, so that the limit slot can be used to limit the rotation of the limit plate. The part of the limit plate away from the limit slot cooperates with the operator's hand, which makes it convenient for the operator to grab the limit plate, and then facilitates the movement or rotation of the limit plate.
[0046] like Figure 1 As shown, the other end of the rotating member 2 passes through the fourth side plate 14 and extends to the outside of the fourth side plate 14, the other end of the rotating member 2 is connected to the fastener 4, and an elastic member 5 is arranged between the fastener 4 and the fourth side plate 14. The elastic member 5 is sleeved on the rotating member 2 to generate a restoring force when the rotating member 2 moves along the direction of its rotation axis. The elastic member 5 can be a spring or other suitable components.
[0047] Among them, the fastener 4 mainly plays the role of fixing and limiting. The other end of the rotating member 2 extends to the outside of the fourth side plate 14 and is connected to the fastener 4, so that the fastener 4 can be used to limit the movement of the rotating member 2 in the direction of the rotation axis, thereby preventing the rotating member 2 from detaching from the fixed frame 10, and then the rotating member 2 can better wind and tighten the wire rope. The elastic member 5 mainly provides elastic deformation and generates restoring force. The elastic member 5 is arranged between the fastener 4 and the fourth side plate 14, that is, the elastic member 5 is arranged outside the fixed frame 10, so that the elastic member 5 can be prevented from affecting the tightening of the wire rope. In addition, the fastener 4 and the fourth side plate 14 can be used to limit the elastic member 5, so that the setting of the elastic member 5 is more stable, and the elastic member 5 can work better. Specifically, when tightening the wire rope, the operator needs to move the rotating part 2 along the direction of its rotation axis and disengage it from the limit part 3. At this time, the spring is compressed under the action of the fastener 4. When the tightening of the wire rope is completed, the rotating part 2 is released. The rotating part 2 will return to its original state under the action of the restoring force of the spring, that is, the state in which the rotating part 2 cooperates with the limit part 3, so that the rotating part 2 can remain relatively stable in the direction of its rotation axis, making the state of the tightened wire rope more stable.
[0048] The other end of the rotating member 2 is provided with an external thread, and the fastener 4 is provided with an internal thread, and the internal thread is threadedly matched with the external thread. The external thread is provided on the rotating member 2, and the internal thread is provided on the fastener 4, so that when the fastener 4 is matched with the other end of the rotating member 2, it can be matched through the threaded connection between the internal thread and the external thread, so that the connection between the fastener 4 and the rotating member 2 can be more stable, and it is easy to disassemble and use.
[0049] In other embodiments, the limiting groove may include a plurality of straight grooves, and the plurality of straight grooves are cross-arranged, and the limiting plate selectively cooperates with any straight groove. In other words, the limiting groove may be composed of a plurality of straight grooves, and the plurality of straight grooves are cross-arranged. Specifically, the middle positions of the plurality of straight grooves are interconnected, so that the limiting plate can cooperate with the limiting groove at multiple angles. In this way, when the limiting plate is tightening the wire rope, even if the angle at which the limiting plate is located cannot completely cooperate with any straight groove in the limiting groove, at this time, the limiting plate only needs to be rotated by a relatively small angle to make the limiting plate cooperate with the limiting groove. In this way, the angle at which the limiting plate rotates to cooperate with the limiting groove can be reduced, that is, the release angle of the tightened wire rope can be reduced, so that the tightened state of the wire rope can be better maintained.
[0050] It should be noted that since the internal space of the fixed frame 10 is limited, the winding thickness of the wire rope on the rotating member 2 is also limited. When a single fastening device cannot meet the demand for tightening the wire rope, multiple fastening devices can be used simultaneously to wind and tighten the wire rope.
[0051] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.
[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.
[0053] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0054] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A fastening device, characterized in that: It includes: A fixing frame (10), the fixing frame (10) comprising: a first side plate (11), a second side plate (12), a third side plate (13) and a fourth side plate (14), the first side plate (11) and the second side plate (12) being arranged opposite to each other, the third side plate (13) and the fourth side plate (14) being arranged opposite to each other, and the first side plate (11) being provided with a first through hole (111), the second side plate (12) being provided with a second through hole (121), the third side plate (13) being provided with a third through hole (131), the fourth side plate (14) being provided with a fourth through hole (141), and the third through hole (131) and the fourth through hole (141) being arranged opposite to each other; A rotating member (2) is provided, the rotating member (2) passes through the third through hole (131) and the fourth through hole (141), and a fifth through hole (21) is provided on the rotating member (2); a steel wire rope of the crane passes through the first through hole (111), the fifth through hole (21) and the second through hole (121); the rotating member (2) is rotated to wind and tighten the steel wire rope.
2. A fastening device according to claim 1, characterized in that: The first through hole (111) and the second through hole (121) are arranged opposite to each other.
3. A fastening device according to claim 1, characterized in that: The fastening device further comprises a limiting member (3), the limiting member (3) being arranged on the outer side of the third side plate (13), the limiting member (3) being provided with a sixth through hole (31), and the sixth through hole (31) being arranged opposite to the third through hole (131), and one end of the rotating member (2) passing through the sixth through hole (31) and selectively engaging with the limiting member (3) in a limiting manner.
4. A fastening device according to claim 3, characterized in that: The limiting member (3) is provided with a first limiting portion (32), and one end of the rotating member (2) is provided with a second limiting portion (22), the second limiting portion (22) selectively cooperates with the first limiting portion (32) in a limiting manner along the rotation axis direction of the rotating member (2).
5. A fastening device according to claim 1, characterized in that: The other end of the rotating member (2) passes through the fourth side plate (14) and extends to the outside of the fourth side plate (14); the other end of the rotating member (2) is connected to a fastener (4); an elastic member (5) is provided between the fastener (4) and the fourth side plate (14); the elastic member (5) is sleeved on the rotating member (2) to generate a restoring force when the rotating member (2) moves along the direction of its rotation axis.
6. A fastening device according to claim 4, characterized in that: The first limiting portion (32) is configured as a limiting groove, and the second limiting portion (22) is configured as a limiting plate.
7. A fastening device according to claim 6, characterized in that: The limiting groove is constructed as a straight groove; Or, the limiting groove includes: a plurality of straight grooves, and the plurality of straight grooves are cross-arranged, and the limiting plate selectively cooperates with any of the straight grooves in a limiting manner.
8. A fastening device according to claim 6, characterized in that: The limiting plate is a flat structure, and a portion of the limiting plate close to the limiting slot cooperates with the limiting slot, and a portion of the limiting plate away from the limiting slot cooperates with the hand.
9. A fastening device according to claim 5, characterized in that: The other end of the rotating member (2) is provided with an external thread, and the fastener (4) is provided with an internal thread, and the internal thread matches the external thread.
10. A crane, characterized in that: It uses a fastening device according to any one of claims 1 to 9 to tighten and fix the steel wire rope of the crane.