Restraining structure for preventing rotation of steel wire rope of crane

Abstract

The invention relates to the field of cranes, in particular to a restraining structure for preventing a crane steel wire rope from rotating, the restraining structure is arranged on a crane body, the crane body is provided with a main winding drum capable of unwinding the steel wire rope and a hook connected with the steel wire rope, and the restraining structure comprises a pull rope used for generating extra tension on the hook. The main winding drum is used for winding the steel wire rope, the guide piece is used for preventing the pull rope and the steel wire rope from being wound, the main winding drum is further provided with an auxiliary winding drum for unwinding the pull rope, and when the main winding drum drives the steel wire rope to be unwound, the auxiliary winding drum synchronously drives the pull rope to be unwound. Through synchronous operation of the main winding drum and the auxiliary winding drum, balanced two-way pulling force is applied to the hook, the stable state of the heavy object is maintained, along with traction force of the pulling rope to the hook, the rotating phenomenon of the steel wire rope in the heavy object lifting or lowering process is indirectly prevented, it is ensured that the heavy object is lifted or lowered in the stable state, and operation accidents are avoided.

Description

Technical Field

[0001] The present invention relates to the field of cranes, and more particularly to a structure for suppressing the rotation of a crane wire rope. Background Art

[0002] At present, in the daily use of cranes, since some cranes are very tall and the wire ropes are overloaded during use, the rotational stress of the wire ropes gradually accumulates. When it reaches a certain strength, the wire ropes will rotate and move. At this time, the upper end of the wire rope is wound around the drum, and the lower wire rope twists and drives the hook to rotate in the air, which is prone to accidents.

[0003] The currently disclosed Chinese patent CN220376219U for an anti-twist structure of a crane wire rope includes a support frame. A driving motor is provided at the upper end of the support frame and a wire rope drum is provided on one side of the driving motor. A driving component is provided on one side of the driving motor, and an anti-twist mechanism is provided on one side of the driving component. The anti-twist mechanism includes a mounting frame. The mounting frame is provided on one side of the driving component. A first guide rod is movably installed inside the mounting frame. One end of the first guide rod is provided with a driving gear, a second guide rod. The second guide rod is movably installed inside the mounting frame. The driving gear is meshed with a driven gear provided at one end of the second guide rod. Guide rollers and a guide shaft are provided on the outer sides of the first guide rod and the second guide rod. The guide shaft is provided inside the mounting frame. One ends of the first guide rod and the second guide rod are rotatably connected to the guide shaft through guide holes opened.

[0004] According to the above patent, the above patent uses the lifting and lowering of the wire rope to drive the guide rollers on the first guide rod and the second guide rod to rotate synchronously during the winding and unwinding of the wire rope drum by the anti-twist mechanism, making the winding and unwinding of the wire rope smoother and avoiding twisting and knotting. However, preventing the wire rope from self-rotating only through the design of the guide rollers on the first guide rod and the second guide rod may have certain limitations. There is no additional mechanism to directly prevent the wire rope from twisting itself. Then, when the wire rope passes through the guide rollers, although its straight path is guided, it may still rotate to a certain extent. Therefore, at present, a suppression structure that combines anti-twist measures to completely prevent the wire rope from self-rotating in the guiding mechanism is needed. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, a structure for suppressing the rotation of a crane wire rope is provided. The present invention effectively restricts the unwinding direction of the pulling rope through a guiding member, and through the synchronous operation of the main drum and the auxiliary drum, an equalized bidirectional pulling force is applied to the hook, maintaining the stable state of the heavy object. With the pulling force of the pulling rope on the hook, the rotation of the wire rope during the lifting or lowering of the heavy object is indirectly prevented, ensuring that the heavy object is lifted or lowered in a stable state and avoiding the occurrence of operation accidents.

[0006] To solve the problems of the prior art, the present invention provides a suppression structure for preventing the rotation of the steel wire rope of a crane, which is arranged on the crane main body. The crane main body has a main drum for unwinding the steel wire rope, and a hook connected to the steel wire rope. The suppression structure includes a pulling rope for generating an additional pulling force on the hook, and a guiding member for preventing the pulling rope from winding around the steel wire rope. The crane main body also has a secondary drum for unwinding the pulling rope. The axial direction of the secondary drum is parallel to the axial direction of the main drum. When the main drum drives the steel wire rope to unwind, the secondary drum synchronously drives the pulling rope to unwind. During this process, the guiding member prevents the unwinding position of the pulling rope on the secondary drum from shifting, thereby restricting the rotation of the hook driving the steel wire rope.

[0007] Preferably, the steel wire rope and the pulling rope are respectively wound around the corresponding main drum and secondary drum in a spiral form. A guiding rod group is provided on the crane main body, which can allow the guiding member to move synchronously along the axial direction of the secondary drum following the unwinding of the pulling rope. The guiding member is slidably arranged on the guiding rod group.

[0008] Preferably, the guiding member is specifically a guide roller. The end of the pulling rope winds out from above the guide roller and is fixedly connected to the hook. A positioning fixture is provided on the guide roller for clamping the pulling rope therein to prevent it from detaching from the guiding member due to excessive rotational force of the steel wire rope.

[0009] Preferably, the positioning fixture has a pair of clamping blocks for clamping the pulling rope therein, and each clamping block is fixedly connected to the guide roller.

[0010] Preferably, the positioning fixture has a pair of clamping blocks for clamping the pulling rope therein. Each clamping block is movably connected to the guide roller. A sliding seat slidably connected to the guiding rod group extends in the direction of the corresponding clamping block on each guide roller. Each sliding seat has a pressing portion extending in the direction of the corresponding clamping block. A compression spring in a compressed state is fixedly connected between each pressing portion and the corresponding clamping block.

[0011] Preferably, an electromagnetic driver is provided between the sliding seat and the clamping block to ensure that the clamping block abuts against the pulling rope. The electromagnetic driver has a first magnetic ring fixedly connected to the sliding seat, and a second magnetic ring fixedly connected to the clamping block. The second magnetic ring can move relative to the first magnetic ring.

[0012] Preferably, a limiting member for guiding the steel wire rope to unwind in a vertical state is provided on the guiding rod group. The limiting member is specifically guide wheels symmetrically arranged on both sides of the steel wire rope. A sliding sleeve for rotatably connecting the guide wheels is slidably arranged on the guiding rod group.

[0013] Preferably, the hook is provided with a fixing plate for connecting the wire rope and the pull rope, and the sliding sleeve is provided with a sensing element for cooperating with the fixing plate to determine whether the hook is tilted.

[0014] Preferably, the sensing element is a pressure sensor, and a horizontal plate for installing the pressure sensor is fixedly connected to the sliding sleeve. The horizontal plate has a through hole for the steel wire rope to pass through. A pressure sensor is arranged around the steel wire rope, and the fixed plate has a horizontal surface that can contact all the pressure sensors.

[0015] Preferably, the horizontal surface of the fixed plate has a clamping portion extending upward and capable of being embedded in a through-hole on the horizontal plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention effectively limits the unwinding direction of the pull rope through the guide member, and applies a balanced bidirectional pulling force to the hook through the synchronous operation of the main drum and the auxiliary drum, which not only maintains the stable state of the heavy object, but also reduces the swing. With the traction force of the pull rope on the hook, the rotation of the wire rope in the process of lifting or lowering the heavy object is indirectly prevented, the entanglement between the wire rope and the pull rope is avoided, and it is ensured that the heavy object is lifted or lowered in a stable state, avoiding the occurrence of operation accidents.

[0017] 2. The present invention further restricts the pull rope by the positioning clamp to prevent the pull rope from escaping from the guide member. Even if the wire rope tends to rotate due to external force, the path of the pull rope is still strictly controlled, thereby indirectly inhibiting the rotation of the wire rope and improving the stability of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional structural diagram of a restraining structure for preventing the crane wire rope from rotating Figure 1 .

[0019] Figure 2 A three-dimensional structural diagram of a restraining structure for preventing the crane wire rope from rotating Figure 2 .

[0020] Figure 3 It is a plan cross-sectional view of a restraining structure for preventing the wire rope of a crane from rotating.

[0021] Figure 4 The present invention is a partial three-dimensional structural cross-sectional view of a restraining structure for preventing the steel wire rope of a crane from rotating.

[0022] Figure 5 The invention is a three-dimensional structural diagram of a steel wire rope, a pull rope and a guide member of a restraining structure for preventing the steel wire rope of a crane from rotating.

[0023] Figure 6It is a plan sectional view of a wire rope, a pulling rope, and a guide member of a structure for suppressing rotation of a crane wire rope.

[0024] Figure 7 It is a three-dimensional structural sectional view of a wire rope, a pulling rope, and a guide member of a structure for suppressing rotation of a crane wire rope.

[0025] Figure 8 It is a three-dimensional structural schematic diagram of the first embodiment of a positioning fixture of a structure for suppressing rotation of a crane wire rope.

[0026] Figure 9 It is a three-dimensional structural schematic diagram of the second embodiment of a positioning fixture of a structure for suppressing rotation of a crane wire rope.

[0027] Figure 10 It is a top view of the second embodiment of a positioning fixture of a structure for suppressing rotation of a crane wire rope.

[0028] The reference numerals in the figure are: 1, crane main body; 11, main drum; 12, auxiliary drum; 13, guide rod group; 2, wire rope; 21, hook; 211, fixing plate member; 2111, clamping portion; 3, pulling rope; 4, guide member; 41, sliding seat; 411, first magnetic ring; 412, second magnetic ring; 5, positioning fixture; 51, clamping block; 52, pressing portion; 521, compression spring; 6, limiting member; 61, sliding sleeve; 611, horizontal plate member; 62, sensing element. Detailed implementation manners

[0029] To further understand the features, technical means, specific purposes, and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0030] Refer to Figures 1-6 As shown, a structure for suppressing rotation of a crane wire rope is provided on the crane main body 1. The crane main body 1 has a main drum 11 for unwinding the wire rope 2, and a hook 21 connected to the wire rope 2. The suppression structure includes a pulling rope 3 for generating an additional pulling force on the hook 21, and a guide member 4 for preventing the pulling rope 3 from winding around the wire rope 2. The crane main body 1 also has an auxiliary drum 12 for unwinding the pulling rope 3. The axial direction of the auxiliary drum 12 is parallel to the axial direction of the main drum 11. When the main drum 11 drives the wire rope 2 to unwind, the auxiliary drum 12 synchronously drives the pulling rope 3 to unwind. During this process, the guide member 4 prevents the unwinding position of the pulling rope 3 on the auxiliary drum 12 from shifting, thereby restricting the rotation of the hook 21 driving the wire rope 2.

[0031] When the crane body 1 starts to operate, the main drum 11 starts to drive the wire rope 2 to unwind to lift or lower the weight. The wire rope 2 remains in a drooping state under the weight of the object hung on the hook 21. At the same time, the auxiliary drum 12 operates synchronously to unwind the pull rope 3. The pull rope 3 is unwound along a predetermined path under the guidance of the guide member 4, applying an additional pulling force to the hook 21, forming a balanced pulling force in two directions, which helps to maintain the stability of the weight and reduce swinging, making the lifting or lowering process smoother and safer. In the embodiment, when a heavy object is lifted or lowered, it may have a tendency to rotate due to external force. The unwinding direction and path of the pull rope 3 are effectively controlled by the guide member 4, ensuring that the movement trajectory of the pull rope 3 is coordinated with the wire rope 2, thereby indirectly offsetting the rotation torque of the hook 21 and the wire rope 2, preventing the occurrence of rotation, ensuring that the unwinding trajectory of the pull rope 3 is stable, thereby effectively suppressing the rotation of the wire rope 2, ensuring the independent operation of the pull rope 3 and the wire rope 2, and avoiding the entanglement of the two due to the rotation of the hook 21 during the winding or releasing process.

[0032] See also Figures 3-6 As shown, the wire rope 2 and the pull rope 3 are respectively wound in a spiral form on the corresponding main drum 11 and the auxiliary drum 12, and the crane body 1 is provided with a guide rod group 13 that can allow the guide member 4 to move synchronously along the axial direction of the auxiliary drum 12 following the unwinding of the pull rope 3, and the guide member 4 is slidably set on the guide rod group 13.

[0033] The guide rod group 13 has a plurality of rods for the guide member 4 to slide smoothly on them. When the crane body 1 starts to operate, the main drum 11 and the auxiliary drum 12 are driven respectively by a driving device, which is not shown in the figure. While the main drum 11 drives the wire rope 2 to unwind to lift or lower the weight, the auxiliary drum 12 also operates synchronously to release the pull rope 3. The pull rope 3 works together with the wire rope 2 to jointly bear the weight of the hook 21 and the weight to ensure the stability of the operation. As the pull rope 3 is unwound, the guide member 4 slides on the guide rod group 13 and follows the movement trajectory of the pull rope 3. If the wire rope 2 rotates, this process will cause the pull rope 3 to be guided by the hook 21 to be pulled outward. Due to the setting of the guide member 4, the movement of the pull rope 3 deviating from the original unwinding position is limited, the tension and direction of the pull rope 3 are controlled, and the rotation tendency of the hook 21 and the wire rope 2 is effectively suppressed.

[0034] See also Figures 3-6 As shown, the guide member 4 is specifically a guide roller, and the end of the pull rope 3 is wound around the top of the guide roller and fixedly connected to the hook 21. The guide roller is provided with a positioning clamp 5 for clamping the pull rope 3 therein to prevent it from detaching from the guide member 4 due to excessive rotational force of the wire rope 2.

[0035] During the operation, if the wire rope 2 generates a rotational force due to external forces, this rotational force will be transmitted to the pulling rope 3 through the hook 21, causing the pulling rope 3 to tend to deviate from the guiding path established by the guide roller. At this time, the positioning fixture 5 comes into play, restricting the deflection of the pulling rope 3 and ensuring that it stably remains on the predetermined path of the guide roller. By using the guide roller and the positioning fixture 5 in combination, even if the wire rope 2 has a tendency to rotate under the action of external forces, the path of the pulling rope 3 is still strictly controlled, thereby indirectly suppressing the rotation of the wire rope 2. The pulling direction of the pulling rope 3 on the hook 21 is coordinated with the wire rope 2 and acts on the heavy object together, further stabilizing the operation process.

[0036] See Figure 5 and Figure 8 As shown, the positioning fixture 5 is provided with a pair of clamping blocks 51 that clamp the pulling rope 3 therein, and each of the clamping blocks 51 is fixedly connected to the guide roller.

[0037] After the pulling rope 3 passes over the guide roller and is connected to the hook 21, a pair of clamping blocks 51 restrict the pulling rope 3 therein, and the pulling rope 3 is maintained at the central position of the guide roller by appropriate pressure, neither being too tight to damage the pulling rope 3 nor being too loose to cause the pulling rope 3 to slip during operation. No matter how the wire rope 2 moves or is affected by external forces, it always maintains a stable clamping of the pulling rope 3. Even if the wire rope 2 generates a rotational force due to the dynamic change of the heavy object or external forces, the clamping blocks 51 can effectively prevent the pulling rope 3 from deviating from its predetermined path due to these forces, thereby indirectly suppressing the rotation of the wire rope 2.

[0038] See Figure 5 、 Figure 9 and Figure 10 As shown, the positioning fixture 5 is provided with a pair of clamping blocks 51 that clamp the pulling rope 3 therein. Each of the clamping blocks 51 is movably connected to the guide roller. A sliding seat 41 that is slidably connected to the guide rod group 13 extends in the direction of the corresponding clamping block 51 on each of the guide rollers. A pressing portion 52 that extends in the direction of the corresponding clamping block 51 is provided on each of the sliding seats 41. A compression spring 521 in a compressed state is fixedly connected between each of the pressing portions 52 and the corresponding clamping block 51.

[0039] After the pulling rope 3 passes over the guide roller and is connected to the hook 21, a pair of clamping blocks 51 restrict the pulling rope 3 therein. The spring in the compressed state presses the clamping blocks 51 against the pulling rope 3, ensuring both the stable fixation of the pulling rope 3 and avoiding the risk of damage to the pulling rope 3 caused by being too tight or slipping caused by being too loose. During the operation, through the compression of the spring, the clamping state of a pair of clamping blocks 51 on the pulling rope 3 is maintained, maintaining the correct guiding and stable transmission of the pulling rope 3 and suppressing the rotation tendency of the wire rope 2.

[0040] See Figure 9 and Figure 10As shown, an electromagnetic driver for ensuring that the clamping block 51 abuts against the pulling rope 3 is provided between the sliding seat 41 and the clamping block 51. The electromagnetic driver has a first magnetic ring 411 fixedly connected to the sliding seat 41 and a second magnetic ring 412 fixedly connected to the clamping block 51, and the second magnetic ring 412 can move relative to the first magnetic ring 411.

[0041] When the electromagnetic driver controls the current to make the first magnetic ring 411 repel the second magnetic ring 412, this process precisely controls the pressure of the clamping block 51 on the pulling rope 3, realizing dynamic adjustment. During the operation, according to the actual load on the pulling rope 3, the electromagnetic driver can adjust in real time, automatically increasing or decreasing the clamping force of the clamping block 51 on the pulling rope 3, avoiding the situation that the compression degree of the compression spring 521 fails to meet the requirements. When it is necessary to enhance the clamping to prevent the pulling rope 3 from slipping, the electromagnetic force is enhanced, making the second magnetic ring 412 move away from the first magnetic ring 411. On the contrary, the clamping force is reduced, further strengthening the stability of the pulling rope 3 between the pair of clamping blocks 51, and suppressing the rotation of the steel wire rope 2.

[0042] See Figures 4-7 As shown, a limiting member 6 for guiding the steel wire rope 2 to unwind in a vertical state is provided on the guiding rod group 13. The limiting member 6 is specifically a guide wheel symmetrically arranged on both sides of the steel wire rope 2, and a sliding sleeve 61 for rotatably connecting the guide wheel is slidably provided on the guiding rod group 13.

[0043] When the main drum 11 starts to drive the steel wire rope 2 to unwind, the steel wire rope 2 passes through the guide wheel. The function of the guide wheel is to guide the steel wire rope 2 to unwind in the vertical direction, avoiding deflection or disorder of the steel wire rope 2 during the unwinding process. As the steel wire rope 2 is released or recovered, the sliding of the sliding sleeve 61 on the guiding rod group 13 allows the guide wheel to follow the movement track of the steel wire rope 2, always maintaining effective guidance for the steel wire rope 2, ensuring the stability of the contact point between the guide wheel and the steel wire rope 2 when the length of the steel wire rope 2 changes, and maintaining the vertical state of the steel wire rope 2.

[0044] See Figures 6-9 As shown, a fixing plate member 211 for connecting the steel wire rope 2 and the pulling rope 3 is provided on the hook 21, and an induction element 62 for cooperating with the fixing plate member 211 to judge whether the hook 21 is inclined is provided on the sliding sleeve 61.

[0045] Before the crane main body 1 operates, the fixed plate member 211 and the sensing element 62 on the sliding sleeve 61 maintain a triggering state of relative position. If the hook 21 tilts beyond the preset angle, the relative position between the fixed plate member 211 and the sensing element 62 changes. This change will be captured by the sensing element 62. The tilt information detected by the sensing element 62 is converted into an electrical signal and transmitted in real time to the driving devices of the main drum 11 and the auxiliary drum 12. According to the received signal, the unwinding states of the wire rope 2 and the pulling rope 3 are adjusted until the fixed plate member 211 is adjusted to a horizontal state, avoiding the tilt of the hook 21. At this time, both the wire rope 2 and the pulling rope 3 are in a taut state, which is the initial unwinding state of the wire rope 2 and the pulling rope 3. During the operation process, as the wire rope 2 and the pulling rope 3 unwind synchronously, the fixed plate member 211 is always maintained in a horizontal state, thereby stabilizing the heavy object on the hook 21.

[0046] See Figures 6-9 As shown, the sensing element 62 is specifically a pressure sensor. A horizontal plate member 611 for installing the pressure sensor is fixedly connected to the sliding sleeve 61. The horizontal plate member 611 is provided with a through-hole for the wire rope 2 to pass through. One such pressure sensor is provided around the wire rope 2. The fixed plate member 211 has a horizontal plane that can contact all the pressure sensors.

[0047] Before the operation starts, by adjusting the contact between the fixed plate member 211 and all the pressure sensors, a reference state is formed. At this time, the readings of the four pressure sensors are balanced, indicating that the hook 21 is in a horizontal position. If the hook 21 tilts, the relative position between the fixed plate member 211 and the horizontal plate member 611 changes, resulting in a change in the pressure distribution received by the pressure sensors. Specifically, when the hook 21 tilts in a certain direction, the pressure sensor on the lower side will record a decrease in pressure due to the reduction of the contact surface, while the pressure sensor on the higher side will record an increase in pressure due to the increase of the contact surface. The pressure sensors convert these pressure changes into electrical signals and send them to the driving device in real time. According to the signal differences of the pressure sensors, the main drum 11 and the auxiliary drum 12 are automatically driven to adjust the tensions of the wire rope 2 and the pulling rope 3, so that the hook 21 returns to the horizontal state. During the operation, the unwinding speeds of the wire rope 2 and the pulling rope 3 are controlled to be the same.

[0048] See Figure 6 and Figure 7 As shown, the horizontal plane of the fixed plate member 211 has a clamping portion 2111 that extends upward and can be embedded in the through-hole on the horizontal plate member 611.

[0049] After the fixed plate member 211 is adjusted to be parallel to the horizontal plate member 611, the clamping portion 2111 can be inserted into the through hole on the horizontal plate member 611. At this time, the pressures sensed by all the pressure sensors are the same, which is beneficial to accurately control the balance state of the hook 21 before the operation.

[0050] In the present invention, the guiding member 4 effectively restricts the unwinding direction of the pulling rope 3. Through the synchronous operation of the main drum 11 and the auxiliary drum 12, an equalized bidirectional pulling force is applied to the hook 21, which not only maintains the stable state of the heavy object but also reduces the swing. Along with the pulling force of the pulling rope 3 on the hook 21, the rotation of the steel wire rope 2 during the process of lifting or lowering the heavy object is indirectly prevented, the entanglement between the steel wire rope 2 and the pulling rope 3 is avoided, and it is ensured that the heavy object is lifted or lowered in a stable state, thus avoiding the occurrence of operation accidents.

[0051] The above embodiments only represent one or several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A structure for preventing a crane wire rope from rotating, the structure being arranged on a crane body (1), the crane body (1) comprising a main drum (11) for unwinding a wire rope (2), and a hook (21) connected to the wire rope (2); It is characterized in that The restraining structure comprises a pull rope (3) for generating an additional pulling force on the hook (21), and a guide member (4) for preventing the pull rope (3) from being entangled with the wire rope (2); the crane body (1) also comprises an auxiliary drum (12) for unwinding the pull rope (3); the axial direction of the auxiliary drum (12) is parallel to the axial direction of the main drum (11); When the main reel (11) drives the steel wire rope (2) to unwind, the auxiliary reel (12) synchronously drives the pull rope (3) to unwind. During this process, the guide member (4) prevents the unwinding position of the pull rope (3) on the auxiliary reel (12) from being offset, thereby limiting the rotation of the steel wire rope (2) driven by the hook (21).

2. The structure for preventing a crane wire rope from rotating according to claim 1, characterized in that: The steel wire rope (2) and the pull rope (3) are respectively wound in a spiral form on the corresponding main drum (11) and auxiliary drum (12). The crane body (1) is provided with a guide rod group (13) capable of allowing the guide member (4) to move synchronously along the axial direction of the auxiliary drum (12) following the unwinding of the pull rope (3). The guide member (4) is slidably arranged on the guide rod group (13).

3. The structure for preventing a crane wire rope from rotating according to claim 2, characterized in that: The guide member (4) is specifically a guide roller, the end of the pull rope (3) is wound out from above the guide roller and fixedly connected to the hook (21), and the guide roller is provided with a positioning clamp (5) for clamping the pull rope (3) therein to prevent it from detaching from the guide member (4) due to excessive rotational force of the wire rope (2).

4. The structure for preventing a crane wire rope from rotating according to claim 3, characterized in that: The positioning clamp (5) is provided with a pair of clamping blocks (51) for clamping the pull rope (3) therein, and each of the clamping blocks (51) is fixedly connected to the guide roller.

5. The structure for preventing a crane wire rope from rotating according to claim 3, characterized in that: The positioning clamp (5) is provided with a pair of clamping blocks (51) for clamping the pull rope (3) therein, each of the clamping blocks (51) is movably connected to the guide roller, each of the guide rollers has a slide seat (41) extending in the direction of the corresponding clamping block (51) and slidably connected to the guide rod group (13), each of the slide seats (41) has a pressing portion (52) extending in the direction of the corresponding clamping block (51), and a compression spring (521) in a compressed state is fixedly connected between each of the pressing portions (52) and the corresponding clamping block (51).

6. The structure for preventing a crane wire rope from rotating according to claim 5, characterized in that: An electromagnetic driver is provided between the slide seat (41) and the clamp block (51) to ensure that the clamp block (51) contacts the pull rope (3), the electromagnetic driver comprising a first magnetic ring (411) fixedly connected to the slide seat (41), and a second magnetic ring (412) fixedly connected to the clamp block (51), the second magnetic ring (412) being movable relative to the first magnetic ring (411).

7. The structure for preventing a crane wire rope from rotating according to claim 2, characterized in that: The guide rod group (13) is provided with a limit member (6) for guiding the steel wire rope (2) to unwind in a vertical state. The limit member (6) is specifically a guide wheel symmetrically arranged on both sides of the steel wire rope (2). The guide rod group (13) is slidably provided with a sliding sleeve (61) for the guide wheel to be rotatably connected thereto.

8. The structure for preventing a crane wire rope from rotating according to claim 7, characterized in that: The hook (21) is provided with a fixing plate (211) for connecting the steel wire rope (2) and the pull rope (3), and the sliding sleeve (61) is provided with a sensing element (62) for cooperating with the fixing plate (211) to determine whether the hook (21) is tilted.

9. The structure for preventing a crane wire rope from rotating according to claim 8, characterized in that: The sensing element (62) is specifically a pressure sensor. A horizontal plate (611) for mounting the pressure sensor is fixedly connected to the sliding sleeve (61). The horizontal plate (611) is provided with a through hole for the steel wire rope (2) to pass through. A pressure sensor is provided around the steel wire rope (2). The fixed plate (211) has a horizontal surface capable of contacting all the pressure sensors.

10. The structure for preventing a crane wire rope from rotating according to claim 9, characterized in that: The horizontal surface of the fixed plate (211) is provided with a clamping portion (2111) extending upwards and capable of being embedded in a through opening on the horizontal plate (611).

Images