Combined suspension pulley device

Abstract

This utility model discloses a combined hanging pulley device, relating to the field of power construction facility technology. The hanging pulley device includes a bracket with hooks, through which guide rollers pull the cable; and a clamping assembly, disposed on the inner wall of the bracket, for clamping and fixing the guide rollers. This combined hanging pulley device, by employing two opposing positioning frames as the cable clamping structure, converges towards the cable as the cable traction positioning frames move towards the gradually decreasing end of the embedded groove, thus forming a clamp that holds the cable passing through the cable-laying pulley. Therefore, it effectively solves the technical problem of existing cable-laying pulleys being unable to lock detached cables without affecting normal cable transport, thereby achieving cable transport locking, improving the safety and stability of cable transport, and reducing the difficulty of subsequent corrections.

Description

Technical Field

[0001] This utility model relates to the field of power construction facilities technology, and in particular to a combined hanging pulley device. Background Technology

[0002] With the increase in infrastructure and the expansion of power supply areas, a large number of utility poles and cables are usually required to be erected and laid during the renovation and expansion of power grids for power supply. The common cable laying process mainly uses cable laying pulleys. The existing cable laying pulleys are installed between "U"-shaped supports, which are clamped and fixed to crossarms or poles. The cables are laid through the pulleys.

[0003] Currently, a Chinese patent application with patent number "CN202420984902.2" discloses a cable laying pulley, comprising: a pulley body, a first fixing member, a second fixing member, and an installation component; the installation component is installed on both sides of the pulley body for locking and positioning the two ends of the first fixing member; the first fixing member is installed on the installation component for suspending the pulley body and the construction unit; the second fixing member is installed on the installation component for locking the pulley body and the construction unit. Although it can maintain the orderly progress of cable transmission operations to a certain extent, it cannot effectively lock the cable, resulting in irreparable losses when the cable falls off the laying pulley, requiring re-laying and seriously affecting the safety and stability of cable laying.

[0004] However, during the implementation of the above technical solution, at least the following technical problems were discovered:

[0005] The inability to lock detached cables without disrupting normal cable transport presents a significant challenge. Existing cable laying pulleys rely on their pulleys to transport cables and reduce resistance during movement. However, this leads to a problem: when a cable detaches or breaks, its weight and the lack of effective shear support cause it to slip off the pulley and fall to the ground. This not only impacts objects but also necessitates remeasurement and relay, severely impacting the safety and stability of cable installation. Furthermore, since the exact location of the detachment or breakage is uncertain, while a unidirectional movement mechanism on the laying pulley can provide some locking, it requires adjustment based on the cable's laying direction and cannot lock cables moving in the same direction, presenting significant limitations. Therefore, we propose a combined hanging pulley device. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this utility model provides a combined hanging pulley device, which solves the technical problem that existing cable laying pulleys cannot lock detached cables during use without affecting the normal cable transport process.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A combined hanging pulley device, the hanging pulley device comprising:

[0011] A bracket with hooks pulls the cable via guide rollers.

[0012] The clamping assembly, located on the inner wall of the bracket, is used to clamp and fix the guide rollers.

[0013] The clamping assembly includes a positioning frame that is slidably mounted on the inner side of the bracket, and the positioning frame corresponds to the outer wall of the cable. The positioning frame is located in an embedding groove on the inner side of the bracket, and the depth of the embedding groove gradually decreases from the center to both ends. When the cable moves the positioning frame towards the end of the embedding groove, the positioning frames on both sides of the cable move towards the position of the cable to clamp the cable.

[0014] Preferably, the positioning frame has two opposing cylindrical guide rods at each of its upper and lower ends, and the cylindrical guide rods are inserted into the sliding grooves inside the embedding grooves, with both ends of the sliding grooves extending toward the location of the guide rollers.

[0015] As the positioning frame moves toward the end of the embedding groove, the cylindrical guide rod, guided by the slide groove, pulls the positioning frame toward the direction of the cable.

[0016] Preferably, two parallel limiting strips are installed on the inner wall of the embedding groove, and the two limiting strips are respectively located near the end of the embedding groove to limit the range of motion of the positioning frame.

[0017] The distance between the two limiting strips is greater than the width of the positioning frame, and when one side of the positioning frame is in contact with the end of the embedding groove, the other side of the positioning frame is in contact with the limiting strip.

[0018] Preferably, the positioning frame is equipped with an auxiliary roller on the side facing the guide roller, and the auxiliary roller is attached to the outer wall of the cable, and drives the auxiliary roller to rotate when the cable moves; the end of the auxiliary roller is provided with a locking member, and the auxiliary roller is locked by the locking member, wherein a plurality of bonding strips made of flexible material are evenly distributed on the outer wall of the auxiliary roller.

[0019] Preferably, the locking member includes a sleeve shaft that can rotate synchronously with the auxiliary roller, and multiple movable pins are embedded in the outer wall of the sleeve shaft. The movable pins are inserted into one end of the sleeve shaft and connected to the sleeve shaft through a traction spring. The traction spring is always in a stretched state. When the sleeve shaft is stationary, the movable pins are retracted into the sleeve shaft under the elastic force of the traction spring.

[0020] The movable pin has a counterweight embedded at one end facing the outside of the sleeve shaft, which moves the center of gravity of the movable pin to the front end of the movable pin. When the sleeve shaft rotates, the movable pin extends outward under the action of centrifugal force.

[0021] A fixing component is installed on the inner side of the positioning frame, and the fixing component is sleeved on the outside of the sleeve shaft. When the movable pin extends out of the sleeve shaft, the movable pin is connected to the fixing component.

[0022] Preferably, the fixing component includes a limiting ring fixedly connected to the positioning frame, and the outer wall of the limiting ring is provided with a reserved groove corresponding to the movable pin; wherein, a notch is provided on each side of the movable pin, and when the sleeve shaft rotates with the auxiliary roller, the edge of the reserved groove is inserted into the notch of the movable pin.

[0023] Preferably, the auxiliary roller is provided with a connecting pin on the side facing the sleeve shaft, and is inserted into the pin groove at the center of the sleeve shaft through the connecting pin. The outer wall of the connecting pin and the inside of the pin groove are provided with corresponding locking pins and locking grooves. The auxiliary roller transmits torque to the sleeve shaft through the connecting pin.

[0024] Preferably, the bracket includes a connecting arm and a movable arm on each side, and the movable arm is hinged to the bracket. When the movable arm is rotated outward with the hinge point as the axis, the opening between the bracket and the guide roller is exposed. A screw is inserted through the bracket, and the end of the screw corresponds to the screw hole on the movable arm.

[0025] (III) Beneficial Effects

[0026] 1. By employing two opposing positioning frames as the cable clamping structure and placing them in a gradually decreasing embedding groove, the positioning frames move towards the cable as the cable traction positioning frames move towards the end of the embedding groove, thus forming a clamp that holds the cable passing through the cable-laying pulley, preventing further cable movement and promptly clamping any cables that are about to detach or break. Therefore, this effectively solves the technical problem that existing cable-laying pulleys cannot lock detached cables without affecting normal cable transport, thereby achieving cable transport locking. This improves the safety and stability of cable transport, facilitating subsequent repair, adjustment, and maintenance, and reducing the difficulty of subsequent corrections.

[0027] 2. By installing an auxiliary pulley at the front end of the mounting frame, the friction during normal cable transport is reduced to meet the needs of cable transport. Secondly, a sleeve shaft that rotates synchronously with the auxiliary pulley is connected to its bottom, and a counterweight is embedded in the movable pin on the sleeve shaft. When the auxiliary pulley rotates, the centrifugal force generated throws the movable pin, which is stored in the sleeve shaft, out, creating a protruding state. Simultaneously, a ring-shaped limiting ring with a pre-reserved groove is fitted around the outside of the sleeve shaft. The limiting ring is fixedly connected to the mounting frame, so when the movable pin is thrown out, it can engage with the limiting ring, stopping the auxiliary pulley's rotation and increasing the friction between it and the cable. This facilitates the cable pulling the mounting frame to move horizontally. Thus, the locking mechanism can be activated according to the cable's moving speed, meeting the safety requirements of cable laying without affecting the normal movement of the cable, improving the applicability of the locking function. Attached Figure Description

[0028] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0029] Figure 1 This is an overall structural diagram of an embodiment of the present utility model;

[0030] Figure 2 This is a schematic diagram of the clamping component in an embodiment of the present utility model;

[0031] Figure 3 This is an assembly drawing of the auxiliary pulley and locking component in an embodiment of this utility model;

[0032] Figure 4 This is a diagram showing the connection between the auxiliary pulley and the locking component in an embodiment of this utility model.

[0033] Figure 5 This is a schematic diagram of the locking member in the unfolded state in an embodiment of this utility model;

[0034] Figure 6 This is a schematic diagram and cross-sectional view of the two states of the locking member in the embodiment of this utility model;

[0035] Figure 7 This is an assembly drawing of the positioning frame and the fixing component in an embodiment of this utility model;

[0036] Figure 8 This is a diagram showing the docking relationship between the clamping component and the embedding groove in an embodiment of this utility model;

[0037] Figure 9 This is a schematic diagram of cable assembly in an embodiment of the present invention;

[0038] Figure 10This is one of the schematic diagrams of cable movement in the embodiments of this utility model;

[0039] Figure 11 This is the second schematic diagram of cable movement in the embodiments of this utility model;

[0040] Figure 12 This is a schematic diagram of cable locking in an embodiment of the present invention.

[0041] Legend:

[0042] 11. Mounting bracket; 12. Hook; 13. Connecting arm; 14. Movable arm; 15. Protective frame; 16. Guide roller; 17. Screw;

[0043] 21. Positioning frame; 22. Auxiliary roller; 23. Embedded groove; 24. Slide groove; 25. Limiting strip; 26. Connecting pin; 27. Cylindrical guide rod; 28. Fixing component; 281. Limiting ring; 282. Reserved groove; 283. Snap ring;

[0044] 3. Locking component; 31. Sleeve shaft; 32. Movable pin; 33. Traction spring; 34. Counterweight. Detailed Implementation

[0045] This application provides a combined hanging pulley device, which effectively solves the technical problem that existing cable laying pulleys cannot lock detached cables without affecting normal cable transport. In existing cable laying pulleys, two opposing positioning frames are used as cable clamping structures and placed in gradually decreasing embedment grooves. As the cable traction positioning frames move towards the end of the embedment groove, they move closer to the cable, forming a clamp that holds the cable passing through the laying pulley, preventing further movement. This timely clamping of cables that are about to detach or breakage achieves cable transport locking, thereby improving the safety and stability of cable transport, facilitating subsequent repair, adjustment, and maintenance, and reducing the difficulty of subsequent corrections.

[0046] Example: The technical solution in this application effectively solves the technical problem that existing cable laying pulleys cannot lock detached cables without affecting the normal cable transport process. The overall idea is as follows:

[0047] To address the problems existing in the prior art, this utility model provides a combined hanging pulley device, which mainly consists of three parts: First, a cable-laying pulley body, i.e., a bracket, and hooks 12 and guide rollers 16 mounted on the bracket. The hooks 12 are for convenient installation of the cable-laying pulley on cable suspension facilities such as utility poles or towers, and the guide rollers 16 are used to support the cable, thereby reducing the friction encountered by the cable during movement and facilitating cable traction. Second, a clamping structure for holding the cable, by setting a positioning frame 21 on each side of the cable, with the positioning frame 21 set in an embedded groove 23. The depth of the embedded groove 23 gradually decreases from the center to both ends. Therefore, as the positioning frame 21 moves with the cable, it gradually presses towards the cable's location, thus... The cable is clamped in a "clamp" that tightens towards the center as the cable moves, thus restricting its movement. Combined with the constraint of the embedded groove 23's frame, this prevents the cable from detaching from the device. Thirdly, the locking structure utilizes the centrifugal force generated by the rotation of the auxiliary roller 22 to throw out the movable pin 32, which then hooks onto the fixed structure, restricting the rotation of the auxiliary roller 22 and locking it. This increases the friction between the auxiliary roller 22 and the cable, allowing the positioning frame 21 to move using the cable's movement force, thus completing the locking process. It also maintains the stability of the cable during normal movement, triggering only when the cable moves suddenly. This ensures timely opening of the locking structure without affecting the cable's normal movement, improving overall adaptability and stability. The specific structure is as follows:

[0048] The bracket mainly consists of a mounting frame 11, hooks 12 mounted on the mounting frame 11, and guide rollers 16. The guide rollers 16 are equipped with protective frames 15 to shield their edges and prevent accidental contact or impact. In use, the device is first attached to a utility pole or tower using the hooks 12, and then the wire rope is sequentially passed through the guide rollers 16 at different positions. Figure 9 As shown, the other end of the wire rope is connected to a traction device (such as a car, a winding device, etc.). By pulling the wire rope, the cable connected to the wire rope moves along each guide roller 16, thereby completing the cable laying. However, it was found that this method is only suitable when the cable is not installed. After the cable is installed, whether installing or removing the device from the cable, the device needs to be disassembled into parts, which seriously affects the convenience of use. Therefore, we use a connecting arm 13 and a movable arm 14 as the connection structure between the mounting frame 11 and the protective frame 15, and they are located on both sides of the guide roller 16, as shown. Figure 1As shown, the movable arm 14 is hinged to the protective frame 15. This allows the movable arm 14 to be flipped outwards during use, exposing a notch through which the cable can enter the device and cover the guide roller 16. Figure 9 As shown, the movable arm 14 is then flipped upwards to block the notch and complete the cable installation. Similarly, during disassembly, the cable can be removed while the notch is open. To ensure the movable arm 14 remains stable when closed, a cylindrical screw 17 is inserted through the mounting bracket 11, as shown. Figure 1 As shown, one end of the screw 17 extends to the other side of the mounting bracket 11, and a screw hole is provided on the side of the movable arm 14 facing the screw 17. When the movable arm 14 is in contact with the mounting bracket 11, the screw hole on it corresponds to the end of the screw 17. Then, by rotating the screw 17, the movable arm 14 is fixed to the mounting bracket 11, thus completing the fixation of the movable arm 14.

[0049] The bracket serves as a support base, bearing the subsequent clamping structure and locking element 3. The clamping structure is mounted on the side arms of the protective frame 15, which are respectively connected to the connecting arm 13 and the movable arm 14, and they correspond to each other. Figure 1 As shown; since the purpose of setting the locking member 3 is to control whether the auxiliary roller 22 rotates or not, the locking member 3 is set on the clamping structure so as to facilitate the control of the auxiliary roller 22.

[0050] The clamping structure is divided into two groups, which are respectively set on the inner walls of opposite sides of the protective frame 15 and correspond to the guide rollers 16 on the protective frame 15. When the cable is installed on the guide rollers 16, the outer walls of the cable on both sides correspond to the two clamping structures, thus forming two movable parts of the "clamp". Therefore, it is only necessary to control the relative movement of the two clamping structures to complete the clamping of the cable. In order to utilize the force generated when the cable moves to avoid the need for an additional drive structure, corresponding embedding grooves 23 are opened on the inner walls of both sides of the bracket, such as... Figure 1 As shown, the depth of the embedded groove 23 decreases sequentially from the center to both ends, as... Figure 7 As shown, during the process of the positioning frame 21 sliding along the embedding groove 23 to the end, the positioning frame 21 will continuously move outward, that is, move towards the direction of the cable. Similarly, when both positioning frames 21 move in the same direction at the same time, they will continuously approach the direction of the cable, thereby clamping the cable. Figure 12As shown, this completes the clamping of the cable. For the positioning frame 21 to be driven by the cable, the positioning frame 21 needs to be in contact with the outer sheath of the cable. When the cable moves, the friction force is transmitted to the positioning frame 21, thereby driving the positioning frame 21 to move in the direction of the cable. As the positioning frame 21 moves continuously, the friction force between the cable and the positioning frame 21 also increases continuously. Therefore, the cable can be clamped and fixed during the movement of the cable.

[0051] To maintain the stability of the positioning frame 21 and prevent it from falling out of the insertion groove 23, a set of sliding grooves 24 are provided on both the upper and lower sides of the insertion groove 23. The extension direction of the sliding grooves 24 is consistent with the depth direction of the insertion groove 23, that is, the sliding grooves 24 gradually extend outward. In order to cooperate with the sliding grooves 24, two opposing cylindrical guide rods 27 are provided at the upper and lower ends of the positioning frame 21, such as... Figure 2 As shown, the cylindrical guide rod 27 is inserted into the sliding groove 24 inside the embedding groove 23. Thus, when the positioning frame 21 moves towards the end of the embedding groove 23, the cylindrical guide rod 27, guided by the sliding groove 24, pulls the positioning frame 21 towards the direction of the cable. Figure 8 and Figure 12 As shown, since the cylindrical guide rod 27 is inserted into the slide groove 24, when the positioning frame 21 moves outward, it will be blocked by the slide groove 24, so that the positioning frame 21 can only slide along the slide groove 24 and cannot be disengaged from the embedded groove 23, thereby ensuring the stability of the movement of the positioning frame 21.

[0052] However, a drawback exists in actual use: if the positioning frame 21 is completely attached to the cable, any movement of the cable will cause the positioning frame 21 to move and tighten, making it impossible to lay the cable normally. Therefore, this structure can only be used for locking after the cable is laid, which seriously affects the normal laying requirements of the cable. However, when the cable breaks or falls off, the cable will slide down quickly under its own weight. In order to ensure the safety of the cable movement during laying, the cable movement speed will not be too high. Therefore, taking advantage of this characteristic, a locking structure that can select whether to lock or not according to the movement of the cable is generally designed to meet the requirements.

[0053] The locking structure, designed to assist the clamping structure and adjust the connection between the positioning frame 21 and the cable as needed, utilizes the clamping structure as a carrier. First, an auxiliary roller 22 is installed on the side of the positioning frame 21 facing the guide roller 16. Figure 2 and Figure 5As shown, the positioning frame 21 will fit against the outer wall of the cable via the auxiliary roller 22. When the cable moves, the force driven by the cable is dissipated by rotating the auxiliary roller 22. Therefore, the friction intensity between the cable and the positioning frame 21 can be adjusted simply by controlling whether the auxiliary roller 22 rotates or not. In order to improve the tightness of the fit between the auxiliary roller 22 and the cable, so that the force of the cable movement can be stably transmitted to the positioning frame 21 when the auxiliary roller 22 is locked, several bonding strips made of flexible material are evenly arranged on the outer wall of the auxiliary roller 22. Therefore, when it fits against the outside of the cable, it can fit tightly against the outer wall of the cable under pressure. Similarly, before locking, the power of the cable can also be effectively transmitted to the auxiliary roller 22, and then transmitted to the locking member 3 through the auxiliary roller 22. The locking member 3 activates the corresponding locking function according to the rotation speed of the auxiliary roller 22.

[0054] The most significant characteristic of cable movement is its transport speed. When a cable detaches or breaks, it will move outwards under its own gravity at a very high speed. Conversely, during normal cable movement, to ensure stability, the cable's speed needs to be kept constant or relatively slow. Therefore, the most prominent feature of a cable fault is a sudden increase in its movement speed. Since the auxiliary roller 22 is in contact with the outer wall of the cable, the cable's movement speed is converted into the rotational speed of the auxiliary roller 22. Thus, we can utilize the centrifugal force generated by the rotation of the auxiliary roller 22 as the opening condition for the locking element 3. Therefore, the locking element 3 is designed to include a sleeve shaft 31 that rotates synchronously with the auxiliary roller 22 and multiple movable pins 32 embedded in the outer wall of the sleeve shaft 31. Figure 3 , Figure 4 and Figure 5 As shown, the movable pin 32 is inserted into one end of the sleeve shaft 31 and connected to the sleeve shaft 31 via a traction spring 33. The traction spring 33 is always in a stretched state. Therefore, when the sleeve shaft 31 is not rotating, the movable pin 32 retracts into the sleeve shaft 31 under the elastic force of the traction spring 33, as shown. Figure 6 As shown.

[0055] To enable the auxiliary roller 22 and the sleeve shaft 31 to move together, a connecting pin 26 is provided on the side of the auxiliary roller 22 facing the sleeve shaft 31. The connecting pin 26 can be inserted into the pin groove at the center of the sleeve shaft 31 to prevent relative rotation between the two. Corresponding locking pins and locking grooves are also provided on the outer wall of the connecting pin 26 and inside the pin groove. Through this interlocking method, the auxiliary roller 22 can transmit torque to the sleeve shaft 31 through the connecting pin 26 to achieve synchronous rotation.

[0056] To ensure that the center of gravity of the movable pin 32 is positioned at its front end, a counterweight 34 is embedded at the end of the movable pin 32 facing outwards from the sleeve shaft 31. This adjusts the center of gravity of the movable pin 32, allowing it to extend outwards under centrifugal force when the sleeve shaft 31 rotates. Figure 6 As shown, we only need to restrict the rotation of the movable pin 32 to restrict the rotation of the auxiliary roller 22, thereby completing the locking action. For this purpose, we install a fixing component 28 on the inner side of the positioning frame 21. This fixing component 28 is mainly a limiting ring 281 with a pre-drilled groove 282, and the pre-drilled groove 282 on the limiting ring 281 corresponds one-to-one with the movable pin 32. The limiting ring 281 is fixedly connected to the positioning frame 21 and corresponds to the retaining ring 283 on the positioning frame 21, and is sleeved on the outer side of the sleeve shaft 31, as shown. Figure 5 and Figure 7 As shown, when the movable pin 32 extends, it is inserted into the reserved groove 282 outside the limiting ring 281. Since the limiting ring 281 is fixedly connected to the positioning frame 21, the movable pin 32 cannot continue to rotate with the auxiliary roller 22. This completes the locking of the auxiliary roller 22, which increases the friction between the auxiliary roller 22 and the cable, so that the positioning frame 21 can be moved by the force of the cable movement to complete the locking of the cable.

[0057] To improve the stability of the auxiliary roller 22 locking, we make a notch on each side of the movable pin 32. When the sleeve shaft 31 rotates with the auxiliary roller 22, the edge of the reserved groove 282 is inserted into the notch of the movable pin 32, thus forming a locking state. This prevents the movable pin 32 from retracting into the sleeve shaft 31 after the auxiliary roller 22 stops rotating, thereby ensuring the stability of the locking. To release the lock, we only need to control the auxiliary roller 22 to rotate in the opposite direction, so that the edge of the reserved groove 282 moves out of the notch of the movable pin 32. The movable pin 32 will then retract into the sleeve shaft 31 under the elastic force of the traction spring 33.

[0058] Secondly, to prevent the positioning frame 21 from being easily triggered, we install two parallel limiting strips 25 on the inner wall of the embedding groove 23, and the two limiting strips 25 are respectively positioned near the end of the embedding groove 23, such as... Figure 1 and Figure 8 As shown, the positioning frame 21 is used to limit its range of motion; and the spacing between the two limiting strips 25 is designed to be equal to or slightly greater than the width of the positioning frame 21, so that the positioning frame 21 between the two limiting strips 25 will not be easily moved; in addition, to ensure the stability of the positioning frame 21 at the end of the embedding groove 23, it is designed such that when one side of the positioning frame 21 is in contact with the end of the embedding groove 23, the other side of the positioning frame 21 is in contact with the limiting strip 25, as shown. Figure 12As shown, this prevents the positioning frame 21 from moving under the action of the inclined inner wall of the embedded groove 23 after locking the cable.

[0059] In the specific implementation process, by flipping the movable arm 14 outward, a notch is exposed in the device, allowing the cable to enter the device through this notch and cover the guide roller 16. At this time, the auxiliary roller 22 on the positioning frame 21 is in contact with the outside of the cable, such as... Figure 9 As shown, the movable arm 14 is then flipped upwards to block the notch and complete the cable installation. Similarly, during disassembly, the cable can be removed while the notch is open. To ensure the movable arm 14 remains stable when closed, a cylindrical screw 17 is inserted through the mounting bracket 11, as shown. Figure 1 As shown, one end of the screw 17 extends to the other side of the mounting bracket 11, and a screw hole is provided on the side of the movable arm 14 facing the screw 17. When the movable arm 14 is in contact with the mounting bracket 11, the screw hole on it corresponds to the end of the screw 17. Then, by rotating the screw 17, the movable arm 14 is fixed to the mounting bracket 11, thus completing the fixation of the movable arm 14.

[0060] Because the auxiliary roller 22 on the positioning frame 21 is in contact with the outside of the cable, the movement of the cable will cause the auxiliary roller 22 to rotate. Furthermore, because multiple movable pins 32 with counterweights 34 are embedded in the sleeve shaft 31 at the bottom of the auxiliary roller 22, these movable pins 32 can extend outwards under centrifugal force when the sleeve shaft 31 rotates. Figure 6 As shown, a limiting ring 281 with a reserved groove 282 is fitted around the movable pin 32, and the reserved groove 282 on the limiting ring 281 corresponds one-to-one with the movable pin 32. The limiting ring 281 is fixedly connected to the positioning frame 21. Therefore, when the movable pin 32 extends, it is inserted into the reserved groove 282 outside the limiting ring 281. Since the limiting ring 281 is fixedly connected to the positioning frame 21, the movable pin 32 cannot continue to rotate with the auxiliary roller 22. This completes the locking of the auxiliary roller 22, which increases the friction between the auxiliary roller 22 and the cable. The force of the moving cable drives the positioning frame 21 to move. The depth of the embedded grooves 23 on the inner walls of both sides of the bracket decreases from the center to both ends. Figure 7 As shown, during the process of the positioning frame 21 sliding along the embedding groove 23 to the end, the positioning frame 21 will continuously move outward, that is, move towards the direction of the cable. Similarly, when both positioning frames 21 move in the same direction at the same time, they will continuously approach the direction of the cable, thereby clamping the cable. Figure 12As shown, this completes the clamping of the cable. For the positioning frame 21 to be driven by the cable, it needs to be in contact with the outer sheath of the cable. When the cable moves, the friction force is transmitted to the positioning frame 21, which in turn pushes the positioning frame 21 in the direction of cable movement. As the positioning frame 21 moves continuously, the friction force between the cable and the positioning frame 21 also increases. Therefore, the cable can be clamped and fixed during the cable movement, thus locking the cable.

[0061] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A combined hanging pulley device, characterized in that, The suspension pulley device includes: A bracket with a hook (12) pulls the cable through a guide roller (16); A clamping assembly is provided on the inner wall of the bracket for clamping and fixing the guide roller (16); The clamping assembly includes a positioning frame (21) that is slidably installed inside the bracket, and the positioning frame (21) is in contact with the outer wall of the cable. The positioning frame (21) is located in the embedding groove (23) inside the bracket, and the depth of the embedding groove (23) gradually decreases from the center to both ends. When the cable moves the positioning frame (21) towards the end of the embedding groove (23), the positioning frames (21) on both sides of the cable are guided by the embedding groove (23) to move towards the location of the cable and clamp the cable.

2. The combined hanging pulley device as described in claim 1, characterized in that: The positioning frame (21) has two opposing cylindrical guide rods (27) at its upper and lower ends, and the cylindrical guide rods (27) are inserted into the sliding groove (24) inside the embedded groove (23). Both ends of the sliding groove (24) extend toward the location of the guide roller (16). When the positioning frame (21) moves toward the end of the embedding groove (23), the cylindrical guide rod (27) pulls the positioning frame (21) toward the direction of the cable under the guidance of the slide groove (24).

3. The combined hanging pulley device as described in claim 2, characterized in that: Two parallel limiting strips (25) are installed on the inner wall of the embedding groove (23), and the two limiting strips (25) are respectively set at the end position of the embedding groove (23) to limit the range of motion of the positioning frame (21); The distance between the two limiting strips (25) is greater than the width of the positioning frame (21), and when one side of the positioning frame (21) is in contact with the end of the embedding groove (23), the other side of the positioning frame (21) is in contact with the limiting strip (25).

4. The combined hanging pulley device as described in claim 1, characterized in that: The positioning frame (21) has an auxiliary roller (22) installed on the side facing the guide roller (16), and the auxiliary roller (22) is in contact with the outer wall of the cable, and drives the auxiliary roller (22) to rotate when the cable moves; The auxiliary roller (22) is provided with a locking member at its end, and the rotation of the auxiliary roller (22) is locked by the locking member. The outer wall of the auxiliary roller (22) is evenly distributed with a number of bonding strips made of flexible material.

5. A combined hanging pulley device as described in claim 4, characterized in that: The locking component includes a sleeve shaft (31) that can rotate synchronously with the auxiliary roller (22), and multiple movable pins (32) are embedded in the outer wall of the sleeve shaft (31). The ends of the movable pins (32) are connected to the sleeve shaft (31) through a traction spring (33), and the traction spring (33) is always in a stretched state. When the sleeve shaft (31) is stationary, the movable pins (32) are retracted into the sleeve shaft (31) under the elastic force of the traction spring (33). The movable pin (32) has a counterweight (34) embedded at its front end, which moves the center of gravity of the movable pin (32) to the front end of the movable pin (32). When the sleeve shaft (31) rotates, the movable pin (32) extends outward under the action of centrifugal force. The positioning frame (21) is equipped with a fixing member (28) on its inner side, and the fixing member (28) is sleeved on the outside of the sleeve shaft (31). When the movable pin (32) extends out of the sleeve shaft (31), the movable pin (32) engages with the fixing member (28).

6. The combined hanging pulley device as described in claim 5, characterized in that: The fixing member (28) includes a limiting ring (281) fixedly connected to the positioning frame (21), and the outer wall of the limiting ring (281) is provided with a reserved groove (282) corresponding to the movable pin (32); wherein, a notch is provided on each side of the movable pin (32), and when the movable pin (32) extends out of the sleeve shaft (31), the edge of the reserved groove (282) can be inserted into the notch of the movable pin (32).

7. A combined hanging pulley device as described in claim 5, characterized in that: The auxiliary roller (22) is provided with a connecting pin (26) on the side facing the sleeve shaft (31), and is inserted into the pin groove at the center of the sleeve shaft (31) through the connecting pin (26). The outer wall of the connecting pin (26) and the inner wall of the pin groove are provided with corresponding locking pins and locking grooves. The auxiliary roller (22) transmits torque to the sleeve shaft (31) through the connecting pin (26).

8. The combined hanging pulley device as described in claim 1, characterized in that: The bracket is provided with a connecting arm (13) and a movable arm (14) on both sides respectively. The movable arm (14) is hinged to the bracket. When the movable arm (14) is rotated outward with the hinge point as the axis, the opening between the bracket and the guide roller (16) is exposed. A screw (17) is inserted through the bracket, and the end of the screw (17) corresponds to the screw hole on the movable arm (14).

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