A pole cross arm transmission and hoisting device

Abstract

The present application relates to a kind of electric pole cross arm transmission and lifting device for power construction auxiliary equipment technical field, including the lifting rope for lifting electric pole cross arm, further including the fixing piece capable of being fixed to the top of electric pole body, the fixed piece one end detachably connected with the pulley structure of the lifting rope is guided.Because of the setting of U-shaped bolt and fastening plate, electric pole cross arm can be directly installed on U-shaped bolt after lifting, the technical problem that the process of installing electric pole cross arm in prior art needs one hand to hold U-shaped bolt, the other hand holds the electric pole cross arm of relatively heavy weight, and the mounting hole of electric pole cross arm is sleeved on the straight section of U-shaped bolt, the process is more difficult, and the technical problem that the transmission and lifting body needs to be removed after transmitting and lifting electric pole cross arm in prior art, so that the time of personnel on the top of cement pole is longer, leading to the technical problem of greater risk.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment for power construction, and in particular to a pole crossarm hoisting device. Background Technology

[0002] A pole crossarm is a structure used to support power transmission cables. It is usually installed horizontally on top of a concrete pole and has two or four insulators at intervals on top that are connected to the power transmission cables.

[0003] Currently, the traditional method for installing crossarms on utility poles is for one person to climb to the top of the concrete pole with a rope, then use the rope to lift the crossarm onto the pole before installing it. This method has the following drawbacks: 1. The crossarm needs to be secured to the concrete pole with U-bolts. During installation, one hand needs to support the U-bolts while the other hand holds the heavy crossarm, and the installation hole of the crossarm needs to be fitted into the straight section of the U-bolt. This process is quite difficult. After the installation hole of the crossarm is fitted into the straight section of the U-bolt, the position of the U-bolt and the crossarm needs to be fixed with the help of the body and one hand, and then the other hand needs to screw the lock nut into the straight section of the U-bolt. This process poses a significant safety hazard. 2. Because both the crossarm and the insulator are heavy, the person at the top of the concrete pole cannot lift the crossarm and the insulator simultaneously. The insulator can only be installed after the crossarm is installed and fixed, resulting in a longer working time at the top of the concrete pole and increasing the risk of danger.

[0004] Currently, the existing Chinese patent with publication number CN206680115U discloses a pole crossarm hoisting device, specifically a hoisting body with several hoisting holes and a C-shaped clamping notch on one side. One end of the clamping notch on the hoisting body is rotatably connected to a C-shaped movable hoist, and a locking tooth is provided on the inner wall of the movable hoist away from the end connected to the hoisting body.

[0005] The existing Chinese patent with publication number CN209601940U discloses a pole crossarm hoisting device, including a hoisting frame. A threaded cylinder is installed in the middle of the right end of the hoisting frame, and a threaded rod is installed inside the threaded cylinder. A fixing block is connected to the left end of the threaded rod, and an insert block is fixed to the left end of the fixing block. A swing rod is installed in the middle of the left side of the hoisting frame, and a telescopic spring is installed between the right ends of the swing rod. A fixing ring is connected to the left end of the swing rod through a screw, and a friction pad is installed inside the fixing ring.

[0006] Although the above two devices, after being equipped with pulley blocks and ropes, can be used by personnel on the ground to lift the crossarm of the pole, thus solving the defect in defect 2 that the insulator can only be installed after the crossarm of the pole is installed and fixed, the device does not solve defect 1 and introduces the following new defect 3: it requires personnel at the top of the concrete pole to install it, and it also needs to be dismantled after the crossarm of the pole is hoisted. Overall, it does not reduce the time personnel spend at the top of the concrete pole at all, and the long time personnel spend at the top of the concrete pole still poses a greater risk of danger. Summary of the Invention

[0007] The purpose of this invention is to provide a pole crossarm hoisting device to solve the above-mentioned problems.

[0008] The present invention achieves the above objectives through the following technical solutions: A pole crossarm hoisting device includes a hoisting rope for hoisting the pole crossarm, and a fixing member that can be fixed to the top of the pole body. One end of the fixing member is detachably connected to a pulley structure for guiding the hoisting rope. The fastener includes a U-bolt and a fastening plate. The straight section of the U-bolt has a groove along its axial direction, and the outer end of the groove is open. The bottom of the groove has multiple slots evenly spaced along its length. The two ends of the fastening plate have mounting holes corresponding to the straight sections of the U-bolt, and the mounting holes are fitted onto the corresponding straight sections of the U-bolt. The cavity of the mounting hole is hinged to the groove at the position of the groove, and the lower end of the first locking rod faces the open end of the corresponding groove, and the lower end of the first locking rod engages with the corresponding slot. The fastening plate has a clamping component on the plate surface corresponding to the closed end of the U-bolt, which can cooperate with the closed end of the U-bolt to clamp the pole body. The closed end of the U-bolt is detachably connected to a pulley structure for guiding the hoisting rope. One end of the hoisting rope is equipped with a winding and unwinding structure for winding and unwinding, and the other end is equipped with a lifting device for hoisting the crossarm of the utility pole.

[0009] Preferably, the clamping component includes an arc-shaped portion that can cooperate with the closed end of the U-bolt to clamp the pole body. Both ends of the arc-shaped portion are provided with connecting portions that are perpendicularly fixed to the fastening plate, and there is a gap between the arc-shaped portion and the fastening plate.

[0010] Preferably, the pulley structure includes a horizontally arranged wheel bracket, the closed end of the U-bolt is provided with at least two insertion holes spaced apart along its axial direction, the bottom surface of one end of the wheel bracket near the U-bolt is provided with an insertion rod adapted to the insertion hole, and the other end of the wheel bracket is rotatably connected to a pulley.

[0011] Preferably, the pulley structure further includes an intervention pulling structure that allows personnel at the top of the pole to intervene and pull the hoisting rope, thereby raising the hoisting device.

[0012] Preferably, the intervention traction structure includes an n-shaped frame, and the top surface of the wheel bracket is provided with an n-shaped frame corresponding to the position of the pulley. The inner cavity of the n-shaped frame is rotatably connected to a pressure wheel that is parallel to the pulley and cooperates with the pulley to compress the rope body. The rim surface of the pressure wheel is provided with a plurality of convex ridges evenly spaced along its circumference and along its axial direction. The top of the n-shaped frame is also provided with a locking member that can move up and down to lock into position between two adjacent convex ridges. One end of the pressure roller shaft extends out of the n-shaped frame, and a rotating handle is provided at this end of the pressure roller shaft.

[0013] Preferably, the engaging component includes a lifting block that slides vertically within the inner cavity of the n-shaped frame. A vertical lead screw is rotatably connected to the top surface of the lifting block. The upper end of the lead screw extends through the top of the n-shaped frame, and the lead screw body is threadedly engaged with the n-shaped frame. A locking tooth structure that can be correspondingly engaged between two adjacent protrusions is rotatably connected to the side of the lifting block away from the central axis of the pressure roller.

[0014] Preferably, two locking members are provided at intervals along the width direction of the n-shaped frame, and the two locking members are symmetrically arranged with respect to the vertical plane where the center axis of the pressure roller is located.

[0015] Preferably, the winding and unwinding structure includes a mounting frame, and a winding reel for winding and unwinding the lifting rope is rotatably connected to the top of the mounting frame. The mounting frame is also provided with a drive structure for driving the winding reel to rotate and a braking structure capable of braking the central shaft of the winding reel.

[0016] Preferably, the lifting device includes a C-shaped component that can clamp onto the pole body. The closed end face of the C-shaped component is a vertical plane. The inner side of the C-shaped component has three wheel rims evenly spaced along its circumference, which are rollers that can roll and abut against the pole body along the length of the pole body. The closed end face of the C-shaped component has two screws that pass through the pole crossarm mounting holes spaced along its length. The top surface of the middle part of the closed end of the C-shaped component has a connector that is connected to the lifting rope.

[0017] Preferably, the top surface of the closed end of the C-shaped component is also provided with an infrared detection sensor capable of detecting personnel.

[0018] The beneficial effects are: 1. Due to the U-bolts and fastening plates, the pole crossarm can be directly installed on the U-bolts after hoisting it. This solves the technical problem in the existing technology where one hand needs to support the U-bolt while the other hand holds the heavy pole crossarm and fits the installation hole of the pole crossarm into the straight section of the U-bolt. This process is quite difficult. It also solves the technical problem in the existing technology where the pole crossarm still needs to be dismantled after being hoisted by the hoisting body, resulting in personnel spending a long time on top of the concrete pole and causing greater danger and risk. 2. Due to the installation of the traction structure, the crossarm on the ground is clearly visible to the workers. Once the crossarm reaches the desired height, the winding mechanism stops winding up the hoisting rope. This prevents workers on the ground from being injured by the crossarm colliding with them at the top of the pole due to delayed observation. Workers at the top of the pole can rotate the handle to rotate the pressure roller. The pressure roller, in conjunction with the pulley, moves the hoisting rope, allowing the crossarm to be safely moved to the appropriate height. This effectively avoids the risk of the crossarm colliding with personnel at the top of the pole, thus improving safety. 3. Due to the locking mechanism and the corresponding tooth structure located on one side of the pressure roller, the tooth structure can restrict the pressure roller to rotate in only one direction. This allows personnel at the top of the pole to release the rotating handle at any time according to the actual situation, ensuring the safety of personnel at the top of the pole and preventing the pole crossarm from falling, thus further improving the safety factor.

[0019] The additional technical features and advantages of the present invention will become more apparent from the following description, or may be learned through practice of the invention. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a structural schematic diagram of the present invention in its usage state; Figure 2 This is a schematic diagram of the assembly structure of the fixing component and pulley structure in this invention; Figure 3 This is a top view of the fastener in this invention; Figure 4 yes Figure 3 AA section view; Figure 5 This is a schematic diagram of the pulley structure in this invention; Figure 6 This is a top view of the pulley structure in this invention; Figure 7 yes Figure 6 BB cross-sectional view Figure 8 This is a schematic diagram of the lifting device in this invention.

[0021] The annotations in the attached figures are explained as follows: 1. Fixing component; 11. U-bolt; 111. Groove; 112. Slot; 113. Insertion hole; 12. Fastening plate; 121. Mounting hole; 13. First clamping rod; 14. Clamping component; 141. Arc-shaped part; 142. Connecting part; 2. Lifting rope; 3. Pulley structure; 31. Wheel bracket; 32. Inserting rod; 33. Pulley; 34. Intervention traction structure; 341. N-shaped frame; 342. Pressure roller; 343. Protruding ridge; 344. Clamping component; 3441. Lifting block; 3442. Screw; 3443. Gear structure; 345. Rotating handle; 4. Winding and unwinding structure; 41. Mounting frame; 42. Winding reel; 43. Drive structure; 5. Lifting device; 51. C-shaped component; 52. Roller structure; 53. Screw; 54. Connecting component; 55. Infrared detection sensor. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] Example 1, as Figure 1-8 As shown, a pole crossarm hoisting device includes a hoisting rope 2 for hoisting the pole crossarm, and a fixing member 1 that can be fixed to the top of the pole body. One end of the fixing member 1 is detachably connected to a pulley structure 3 for guiding the hoisting rope 2. like Figure 2-4As shown, the fastener 1 includes a U-bolt 11 and a fastening plate 12. The straight section of the U-bolt 11 has a groove 111 along its axial direction, and the outer end of the groove 111 is open. The bottom of the groove 111 has a plurality of slots 112 evenly spaced along its length. The two ends of the fastening plate 12 are provided with mounting holes 121 corresponding to the straight section of the U-bolt 11. The mounting holes 121 are fitted onto the corresponding straight section of the U-bolt 11. The cavity of the mounting hole 121 is hinged to the groove 111 at the position of the groove, and the lower end of the first locking rod 13 faces the open end of the corresponding groove 111. The first locking rod 13 is engaged with the corresponding slot 112. The plate surface of the fastening plate 12 corresponding to the closed end of the U-bolt 11 is provided with a clamping member 14 that can cooperate with the closed end of the U-bolt 11 to clamp the pole body. The closed end of the U-bolt 11 is detachably connected to a pulley structure 3 for guiding the hoisting rope 2. One end of the hoisting rope 2 is provided with a winding and unwinding structure 4 for winding and unwinding it, and the other end is provided with a lifting device 5 for hoisting the pole crossarm. With the setting of fastener 1, the personnel can first clamp the U-bolt 11 to the pole body, and then put the fastening plate 12 on the straight section of the U-bolt 11. At this time, under the action of the first clamping rod 13 and the clamping groove 112, the fastening plate 12 can only move in the direction of the closed end of the U-bolt 11 and cannot move in the opposite direction, thus completing the installation of fastener 1. Due to the installation of the U-bolt 11 and the fastening plate 12, the pole crossarm can be directly installed on the U-bolt 11 after hoisting it. This solves the technical problem in the prior art where it is difficult to install the pole crossarm by holding the U-bolt with one hand and holding the heavy pole crossarm with the other hand, and fitting the installation hole of the pole crossarm into the straight section of the U-bolt. It also solves the technical problem in the prior art where the pole crossarm still needs to be dismantled after being hoisted by the hoisting body, resulting in personnel spending a long time on top of the concrete pole and causing greater danger and risk.

[0025] When installing the crossarm of the pole, first, fit the mounting holes of the crossarm of the pole onto the straight section of the U-bolt 11. Then, use the nut that matches the U-bolt 11 to fix the crossarm of the pole. When the nut is rotated, the closed end of the U-bolt 11 cooperates with the clamp 14 to further tighten the pole body, ensuring the stability of the fixing part 1, and thus ensuring the stability of the crossarm of the pole after installation. As required, the inner side of the closed end of the U-bolt 11 and the side of the closed end of the clamp 14 are provided with an elastic anti-slip layer, which can be a rubber sheet.

[0026] Example 2, based on Example 1, such as Figure 2-4As shown, the clamp 14 includes an arc-shaped part 141 that can cooperate with the closed end of the U-bolt 11 to clamp the pole body. Both ends of the arc-shaped part 141 are provided with connecting parts 142 that are perpendicularly fixed to the fastening plate 12, and there is a gap between the arc-shaped part 141 and the fastening plate 12. As needed, the inner arc surface of the arc-shaped part 141 is uniformly provided with an anti-slip structure, which is a protrusion or a concave point; that is, the inner arc surface of the arc-shaped part 141 is the arc-shaped surface that fits against the pole body during installation. This design allows the arc-shaped portion 141 to have a certain amount of deformation, enabling the inner arc surface of the arc-shaped portion 141 to fit tightly against different diameter positions on the pole body, thereby allowing the fixing member 1 to be installed at different diameter positions on the pole body.

[0027] Example 3, based on Example 1, such as Figure 5-7 As shown, the pulley structure 3 includes a horizontally arranged wheel bracket 31, and at least two insertion holes 113 are provided at the closed end of the U-bolt 11 along its axial direction. The bottom surface of one end of the wheel bracket 31 near the U-bolt 11 is provided with an insertion rod 32 that is adapted to the insertion hole 113. The other end of the wheel bracket 31 is rotatably connected to a pulley 33. This configuration allows the pulley structure 3 to be quickly installed on the U-bolt 11; As needed, a limiting structure can be detachably connected to the lower end of the insertion rod 32; the limiting structure is a nut, a limiting pin, or other components that can prevent the insertion rod from moving.

[0028] Example 4, based on Example 3, such as Figure 5-7 As shown, the pulley structure 3 also includes an intervention pulling structure 34 that allows personnel at the top of the pole to intervene and pull the hoisting rope 2, thereby raising the hoisting device 5. The intervention traction structure 34 includes an n-shaped frame 341. The top surface of the wheel bracket 31 is provided with an n-shaped frame 341 at a position corresponding to the pulley 33. The inner cavity of the n-shaped frame 341 is rotatably connected to a pressure wheel 342 that is parallel to the pulley 33 and cooperates with the pulley 33 to compress the rope body of the suspension rope 2. The rim surface of the pressure wheel 342 is provided with a plurality of convex ribs 343 evenly spaced along its circumference and along its axial direction. The top of the n-shaped frame 341 is also provided with a locking member 344 that can move up and down to lock into the position between two adjacent convex ribs 343. One end of the axle of the pressure roller 342 extends out of the n-shaped frame 341, and the axle of the pressure roller 342 is provided with a rotating handle 345 at this end; Because of the intervention and traction structure 34, the crossarm on the ground is clearly visible to the workers. After the crossarm rises to the desired height, the winding and unwinding structure 4 stops winding the rope 2. This prevents the crossarm from colliding with workers at the top of the pole due to delayed observation, thus avoiding injury. Workers at the top of the pole can rotate the handle 345, which in turn rotates the pressure roller 342. The pressure roller 342, in conjunction with the pulley 33, moves the rope 2, allowing the crossarm to move safely to the appropriate height. This effectively avoids the risk of the crossarm colliding with personnel at the top of the pole, improving safety.

[0029] Example 5, based on Example 4, such as Figure 5-7 As shown, the engaging component 344 includes a lifting block 3441 that slides vertically into the inner cavity of the n-shaped frame 341. A vertical lead screw 3442 is rotatably connected to the top surface of the lifting block 3441. The upper end of the lead screw 3442 moves through the top of the n-shaped frame 341, and the body of the lead screw 3442 is threaded into the n-shaped frame 341. A tooth structure 3443 that can be correspondingly engaged between two adjacent protrusions 343 is rotatably connected to the side of the lifting block 3441 away from the central axis of the pressure roller 342. Because of the locking component 344 and the locking tooth structure 3443 are located on one side of the pressure roller 342, the locking tooth structure 3443 can restrict the pressure roller 342 to rotate in only one direction. This allows the personnel at the top of the pole to release the rotating handle 345 at any time according to the actual situation, ensuring the safety of the personnel at the top of the pole and preventing the pole crossarm from falling, thus further improving the safety factor. As needed, two locking components 344 are provided at intervals along the width direction of the n-shaped frame 341, and the two locking components 344 are symmetrically arranged with respect to the vertical plane where the central axis of the pressure roller 342 is located.

[0030] Example 6, based on Example 1, such as Figure 1 As shown, the take-up and unwinding structure 4 includes a mounting frame 41, and a take-up reel 42 for taking up and unwinding the hoisting rope 2 is rotatably connected to the top of the mounting frame 41. The mounting frame 41 is also provided with a drive structure 43 for driving the take-up reel 42 to rotate and a braking structure that can brake the central shaft of the take-up reel 42. Depending on the requirements, the drive structure 43 can be a motor or a rotary handle.

[0031] Example 7, based on Example 1, such as Figure 8As shown, the lifting device 5 includes a C-shaped part 51 that can clamp onto the pole body. The closed end face of the C-shaped part 51 is a vertical plane. The inner side of the C-shaped part 51 is provided with three wheel flanges evenly spaced along its circumference, which can roll and abut against the pole body along the length of the pole body. The closed end face of the C-shaped part 51 is provided with two screws 53 through which the pole crossarm mounting holes pass along its length. The top surface of the middle part of the closed end of the C-shaped part 51 is provided with a connector 54 that is connected to the lifting rope 2. This setup, with the C-shaped component 51 clamping onto the pole body, prevents the crossarm from swaying excessively during hoisting, thus preventing the insulators on the crossarm from colliding with the pole and causing damage to the insulators. The roller structure 52 reduces friction between the C-shaped component 51 and the pole body, making the hoisting of the crossarm smoother. The top surface of the closed end of the C-type part 51 is also equipped with an infrared detection sensor 55 capable of detecting personnel; Specifically, the infrared detection sensor 55 is connected to the alarm device; Specifically, when the infrared detection sensor 55 detects a person, the alarm device will sound an alarm. At this time, the winding of the hoisting rope 2 can be stopped by the winding structure 4 to prevent the hoisting device 5 or the pole crossarm from hitting the person at the top of the pole. At this time, the person at the top of the pole can use the traction structure 34 to raise the pole crossarm, thus ensuring the safety of the person at the top of the pole.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pole crossarm hoisting device, comprising a hoisting rope for hoisting the pole crossarm, characterized in that: It also includes a fastener that can be fixed to the top of the pole, with a pulley structure detachably connected to one end of the fastener to guide the suspension rope; The fastener includes a U-bolt and a fastening plate. The straight section of the U-bolt has a groove along its axial direction, and the outer end of the groove is open. The bottom of the groove has multiple slots evenly spaced along its length. The two ends of the fastening plate have mounting holes corresponding to the straight sections of the U-bolt. The mounting holes are fitted onto the corresponding straight sections of the U-bolt. The cavity of the mounting hole is hinged to the groove with an inclined first locking rod. The lower end of the first locking rod faces the open end of the corresponding groove and engages with the corresponding slot. The fastening plate has a clamping component on the plate surface corresponding to the closed end of the U-bolt, which can cooperate with the closed end of the U-bolt to clamp the pole body. The closed end of the U-bolt is detachably connected to a pulley structure for guiding the hoisting rope. One end of the hoisting rope is equipped with a winding and unwinding structure for winding and unwinding, and the other end is equipped with a lifting device for hoisting the crossarm of the utility pole. The pulley structure includes a horizontally arranged wheel bracket, at least two insertion holes spaced apart along the axial direction of the closed end of the U-bolt, an insertion rod adapted to the insertion hole is provided on the bottom surface of one end of the wheel bracket near the U-bolt, and a pulley is rotatably connected to the other end of the wheel bracket; The pulley structure also includes an intervention pulling structure that allows personnel at the top of the pole to intervene and pull the hoisting rope, thereby raising the hoisting equipment. The intervention pulling structure includes an n-shaped frame, with an n-shaped frame located on the top of the pulley corresponding to the position of the pulley. The inner cavity of the n-shaped frame is rotatably connected to a pressure wheel that is parallel to the pulley and cooperates with the pulley to compress the hoisting rope. The rim of the pressure wheel is evenly spaced around its circumference with multiple convex ridges along its axial direction. The top of the n-shaped frame is also provided with a locking component that can move up and down to engage with the corresponding adjacent convex ridges. One end of the pressure roller shaft extends out of the n-shaped frame, and the pressure roller shaft is equipped with a rotating handle.

2. The pole crossarm hoisting device according to claim 1, characterized in that: The clamping component includes an arc-shaped part that can mate with the closed end of the U-bolt to clamp the pole body. Both ends of the arc-shaped part are provided with connecting parts that are perpendicularly fixed to the fastening plate, and there is a gap between the arc-shaped part and the fastening plate.

3. The pole crossarm hoisting device according to claim 1, characterized in that: The locking component includes a lifting block that slides up and down within the inner cavity of the n-shaped frame. A vertical lead screw is rotatably connected to the top surface of the lifting block. The upper end of the lead screw moves through the top of the n-shaped frame, and the lead screw body is threaded into the n-shaped frame. A locking tooth structure that can be locked between two adjacent protrusions is rotatably connected to the side of the lifting block away from the center axis of the pressure roller.

4. The pole crossarm hoisting device according to claim 3, characterized in that: Two locking components are provided at intervals along the width direction of the n-type frame, and the two locking components are symmetrically arranged with respect to the vertical plane where the center axis of the pressure roller is located.

5. The pole crossarm hoisting device according to claim 1, characterized in that: The winding and unwinding structure includes a mounting frame, with a winding reel for winding and unwinding the lifting rope rotatably connected to the top of the mounting frame. The mounting frame also has a drive structure for driving the winding reel to rotate and a braking structure that can brake the central shaft of the winding reel.

6. The pole crossarm hoisting device according to claim 1, characterized in that: The lifting device includes a C-shaped component that can clamp onto the pole body. The closed end face of the C-shaped component is a vertical plane. The inner side of the C-shaped component has three wheel rims evenly spaced along its circumference, which are rollers that can roll and abut against the pole body along its length. The closed end face of the C-shaped component has two screws that pass through the pole crossarm mounting holes spaced along its length. The top surface of the middle part of the closed end of the C-shaped component has a connector that is connected to the lifting rope.

7. A pole crossarm hoisting device according to claim 6, characterized in that: The top surface of the closed end of the C-type component is also equipped with an infrared detection sensor capable of detecting personnel.

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