Hydraulic lifting light-duty holding pole lifting device

Abstract

The present application relates to the technical field of pole lifting, and discloses a hydraulic jacking light pole lifting device, which comprises a tower column body and a supporting mechanism for supporting the tower column body, the top of the tower column body is provided with an external stay mechanism, the supporting mechanism is connected to the main material of the iron tower through a plurality of tower body connecting pieces, the bottom end of the tower column body is fixedly connected with a hydraulic mechanism, the hydraulic mechanism comprises an outer protective steel frame, four hydraulic cylinders are fixedly installed in the outer protective steel frame; the hydraulic jacking mechanism is additionally arranged on the basis of the original internal suspension type pole, and the supporting system is improved, the supporting mechanism is operated through the hydraulic mechanism, the tower column body can be quickly lifted, compared with the traditional lifting mode, the external traction rope, the corresponding traction device and spare parts do not need to be arranged before each pole lifting, the pole lifting operation is more quick and efficient, a plurality of personnel are not needed to cooperate, the labor cost is saved, and the operation difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pole lifting, more particularly to a hydraulic jacking light pole lifting device. BACKGROUND

[0002] The pole is a column used for lifting, usually working with winch, pulley block, steel wire rope, etc. to lift heavy objects on site. The inner suspension pole is the most common type of pole in the construction of iron towers. The inner suspension pole mainly relies on its unique suspension system and hoisting mechanism. During the tower assembly process, the inner suspension pole uses the already assembled tower section to make the pole float in the center of the tower truss through the support mechanism (composed of support steel wire ropes, balance pulleys, etc. to support the pole and keep it in a suspended state in the center of the tower truss) and the outer guy mechanism (composed of multiple steel wire ropes and corresponding rigging, fixed to the four main materials of the iron tower or other stable structures) to make the pole float in the center of the tower truss. In this way, the pole can be used as a lifting fulcrum to gradually lift each component of the iron tower to the predetermined height using ropes or similar equipment and complete the assembly.

[0003] The traditional inner suspension pole lifting method is to stretch the bottom end of the pole upward by external traction equipment, traction ropes, and multiple pulley blocks to achieve the effect of pole lifting. However, this lifting method is complex, and each lifting process requires the re-arrangement and adjustment of traction ropes, pulley blocks, and other components. Multiple workers need to coordinate and cooperate during operation, which is difficult and inefficient. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the present application provides a hydraulic jacking light pole lifting device to solve the problem of high operation difficulty and low efficiency of the existing pole lifting method in the background art.

[0005] The present application provides the following technical solution: a hydraulic jacking light pole lifting device, comprising a tower holding column and a support mechanism for supporting the tower holding column, the top of the tower holding column is provided with an outer guy mechanism, the support mechanism is connected to the main material of the iron tower through a plurality of tower body connecting pieces, the bottom end of the tower holding column is fixedly connected with a hydraulic mechanism, the hydraulic mechanism comprises an outer protective steel frame, four hydraulic cylinders are fixedly installed inside the outer protective steel frame;

[0006] The support mechanism is composed of four load-bearing steel wires and four suspension pulleys, the suspension pulleys are connected to the tower body connecting pieces, one end of each of the four load-bearing steel wires is fixed to the four corner positions at the bottom end of the outer protective steel frame, the other end of each of the four load-bearing steel wires passes through the four suspension pulleys and is connected to the output end of the four hydraulic cylinders, the output end of the hydraulic cylinder is used to expand the distance between the two ends of the load-bearing steel wire and shorten the distance between the bottom end of the outer protective steel frame and the tower body connecting piece to lift the tower holding column.

[0007] Further, the hydraulic cylinder output end is fixedly connected with a supporting pulley, the outer protective steel frame bottom center is fixedly connected with a center column, and the load-bearing steel wire is wound around the supporting pulley bottom and connected with the center column.

[0008] Further, the supporting pulley bottom is fixedly connected with a U-shaped anti-off frame, the hydraulic cylinder bottom is fixedly connected with a supporting frame, and the load-bearing steel wire passes through the U-shaped anti-off frame.

[0009] Further, the load-bearing steel wire is provided with a cutting port, the cutting port is fixedly connected with a telescopic steel wire group, the telescopic steel wire group is used for load-bearing steel wire length adjustment, and the segment of the load-bearing steel wire reaching the outer protective steel frame connecting point from the suspension pulley node always has an inclination.

[0010] Further, the telescopic steel wire group comprises a winding mechanism and a pulley connecting piece, one side of the winding mechanism is fixedly connected with a main body wire through a connecting block, and the other end of the main body wire is wound around the pulley connecting piece and connected with the winding end of the winding mechanism.

[0011] Further, the winding mechanism comprises a shell plate, the shell plate one side is movably sleeved with a winding disc, the shell plate is internally provided with a worm gear transmission mechanism, the shell plate top is fixedly installed with a motor, the motor output end is connected with the winding disc through the worm gear transmission mechanism, and the shell plate one side is provided with an anti-off ring.

[0012] Further, the suspension pulley comprises a fixed shell, the fixed shell is internally provided with a pulley groove c and a accessory groove d, the pulley groove c is movably sleeved with a pulley main part, the accessory groove is provided with a U-shaped plate, the U-shaped plate inner wall is movably sleeved with a rotating disc, the rotating disc side wall is provided with an arc convex block, the arc convex block side wall is provided with a tooth, the rotating disc is connected with the U-shaped plate inner wall through a torsion spring, and the fixed shell top is fixedly connected with a hook.

[0013] Further, the fixed shell internal accessory groove d is provided with a vertical sliding groove, the U-shaped plate is slidably sleeved in the vertical sliding groove, the fixed shell top is provided with a through hole penetrating into the accessory groove d, the through hole is fixedly connected with a double-headed telescopic rod, the double-headed telescopic rod bottom end is fixedly connected with the double-headed telescopic rod top, the top end is matched with the double-headed telescopic rod end, and the double-headed telescopic rod is used for synchronous control of the hook opening opening and closing and the U-shaped plate lifting.

[0014] Further, the double-head telescopic rod comprises a cylinder shell fixedly connected to the inner wall of the fixed shell through hole, a rotating block rotatably sleeved in the cylinder shell, a threaded column one fixedly connected to the bottom of the rotating block, a bottom column threadedly sleeved to the side wall of the threaded column one, a U-shaped plate fixedly connected to the bottom end of the bottom column, a top column fixedly connected to the top of the rotating block, a threaded column two slidingly sleeved to the side wall of the top column, and a threaded cylinder fixedly connected to the top end of the cylinder shell, wherein the threaded column two is threadedly sleeved to the inner wall of the threaded cylinder.

[0015] Further, the bottom column and the top column are both polygonal columns, the inner cavity shape and size of the cylinder shell are matched with the bottom column, and the inner cavity shape and size of the threaded column two are matched with the top column.

[0016] Technical effects and advantages of the present application:

[0017] The present application adds a hydraulic jacking mechanism to the original inner suspension type holding pole and improves the supporting system. Through the cooperation of the hydraulic mechanism and the supporting mechanism, the holding tower column can be quickly lifted. Compared with the traditional lifting method, the external traction rope and the corresponding traction device and spare parts do not need to be laid before each holding pole lifting, so that the holding pole lifting operation is more efficient, and the manpower cost is saved without the need for multiple personnel to cooperate, and the operation difficulty is reduced.

[0018] The supporting mechanism mainly comprises four bearing steel wires and a suspension pulley for connecting the tower connecting piece. The bearing steel wire is also provided with an extension type steel wire group. The length of the bearing steel wire can be conveniently adjusted by arranging the extension type steel wire group. When the connection distance between the suspension pulley and the tower connecting piece is too long or too short, the fault tolerance of the connection between the supporting mechanism and the tower connecting piece can be improved by adjusting the length of the bearing steel wire. At the same time, the angle of the bearing steel wire is also limited to avoid safety hazards when the bearing steel wire tends to be horizontal.

[0019] In addition, the structure of the suspension pulley is improved to limit the bearing steel wire to slide in one direction only, so as to avoid the situation that the holding tower column falls during the retraction of the hydraulic mechanism, thereby improving the safety performance of the device. At the same time, the structure design of the suspension pulley also has an important function, that is, when the suspension pulley and the tower connecting piece are disconnected, the one-way limiting effect of the bearing steel wire is automatically cancelled, so that the supporting mechanism reduces the operation steps when connecting to the higher tower connecting piece after lifting the holding tower column, and the device is more convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0021] Figure 2 It is a schematic diagram of the supporting mechanism and the hydraulic mechanism in the present application; Figure 1

[0022] ​Figure 3 The application is Figure 2 The schematic diagram of the bottom end structure of the outer protective steel frame in the application is shown in the figure.

[0023] Figure 4 The application is Figure 3 The schematic diagram of the enlarged structure at A in the application is shown in the figure.

[0024] Figure 5 The application is Figure 2 The schematic diagram of the bearing steel wire structure in the application is shown in the figure.

[0025] Figure 6 The application is Figure 5 The schematic diagram of the telescopic steel wire group structure in the application is shown in the figure.

[0026] Figure 7 The application is Figure 6 The schematic diagram of the winding mechanism structure in the application is shown in the figure.

[0027] Figure 8 The application is Figure 2 The schematic diagram of the suspension pulley structure in the application is shown in the figure.

[0028] Figure 9 The application is Figure 8 The schematic diagram of the double-end telescopic rod structure in the application is shown in the figure.

[0029] The figure shows that: 1, tower body; 2, outer stay mechanism; 3, supporting mechanism; 4, tower body connecting piece; 5, hydraulic mechanism; 31, bearing steel wire; 32, suspension pulley; 51, outer protective steel frame; 52, hydraulic cylinder; 53, center column; 54, supporting pulley; 55, U-shaped anti-falling frame; 56, supporting frame; 311, telescopic steel wire group; 312, main body wire; 313, winding mechanism; 314, pulley connecting piece; 315, shell plate; 316, winding disc; 317, worm and gear transmission mechanism; 318, motor; 319, anti-falling ring; 321, fixed shell; 322, hook; 323, pulley main piece; 324, U-shaped plate; 325, rotating disc; 326, double-end telescopic rod; 327, barrel shell; 328, rotating block; 329, threaded column one; 3210, bottom column; 3211, top column; 3212, threaded column two; 3213, threaded barrel. DETAILED DESCRIPTION

[0030] The specific embodiments of the application will be described in detail below with reference to the accompanying drawings.

[0031] Referring to Figure 1 and Figure 2The hydraulic jacking light-duty holding pole lifting device provided by the application comprises a tower body 1, a supporting mechanism 3 for supporting the tower body 1, an outer pull line mechanism 2 arranged at the top of the tower body 1, a plurality of tower body connecting pieces 4 for connecting the supporting mechanism 3 to the main material of the iron tower, and a hydraulic mechanism 5 fixedly connected to the bottom end of the tower body 1.

[0032] During the holding pole lifting operation, two hydraulic cylinders 52 are used for conveying, so that the bottom ends of the two diagonal load-bearing steel wires 31 are subjected to the downward pulling force of the hydraulic cylinders 52, at this time, the two diagonal load-bearing steel wires 31 slide on the suspension pulleys 32 and the distance between the two ends of the load-bearing steel wires 31 is increased, and the tower body 1 is controlled to be lifted (as shown in the accompanying drawings). Figure 2 The load-bearing steel wire 31 is divided into a section a and a section b with the suspension pulley 32 as a node, when the load-bearing steel wire 31 is subjected to sliding, the distance from the end of the load-bearing steel wire 31 for connecting the outer protective steel frame 51 to the tower body connecting piece 4 is shortened, that is, the section a is shortened, and the distance from the end of the load-bearing steel wire 31 for connecting the hydraulic cylinder 52 to the tower body connecting piece 4 is expanded, that is, the section b is expanded, the section a is shortened and the position of the tower body connecting piece 4 is unchanged, so that the lifting effect of the outer protective steel frame 51 is achieved, and thus the tower body 1 is controlled to be lifted, and the other two load-bearing steel wires 31 are in a relaxed state due to the position of the outer protective steel frame 51 being lifted, the suspension pulley 32 connected to the other two load-bearing steel wires 31 is disconnected from the tower body connecting piece 4 and connected to the tower body connecting piece 4 at a higher position, so that the load-bearing effect of the two load-bearing steel wires 31 for lifting the outer protective steel frame 51 is transferred to the two load-bearing steel wires 31 for suspending at a higher position, then the two hydraulic cylinders 52 are retracted, the two suspension pulleys 32 at a low position are disconnected from the tower body connecting piece 4 and connected to the tower body connecting piece 4 at a higher position, so that the holding pole lifting is completed.

[0033] In addition, the single load-bearing steel wire 31 is connected to the hydraulic mechanism 5 in a folding manner, so that the load-bearing capacity of the single load-bearing steel wire 31 is improved, and the pulling force of the single connecting piece between the supporting mechanism 3 and the hydraulic mechanism 5 is reduced, so that the stress of each component is reduced and the service life is improved.

[0034] Reference Figure 3 , 4The output end of the hydraulic cylinder 52 is fixedly connected with a supporting pulley 54, and the bottom center of the outer protective steel frame 51 is fixedly connected with a center column 53. The load-bearing steel wire 31 passes through the bottom of the supporting pulley 54 and is connected with the center column 53.

[0035] When the output of the hydraulic cylinder 52 pulls the load-bearing steel wire 31 downward, the load-bearing steel wire 31 also applies a transverse pulling force to the hydraulic cylinder 52, which may cause the output shaft of the hydraulic cylinder 52 to bend or break. To avoid this situation, the center column 53 and the supporting pulley 54 are matched to form an angle at the bottom of the hydraulic cylinder 52. The output end of the hydraulic cylinder 52 is pushed downward to the angle to achieve the effect of pulling the load-bearing steel wire 31 downward. In this way, the two sides of the bottom end of the hydraulic cylinder 52 are subjected to tension, thereby balancing the transverse tension and avoiding damage to the output shaft of the hydraulic cylinder 52.

[0036] Referring to Figure 3 , 4 The bottom of the supporting pulley 54 is fixedly connected with a U-shaped anti-falling frame 55, and the bottom of the hydraulic cylinder 52 is fixedly connected with a supporting frame 56. The load-bearing steel wire 31 passes through the inside of the U-shaped anti-falling frame 55.

[0037] When the load-bearing steel wire 31 is in a relaxed state, it is easy to fall off from the bottom of the supporting pulley 54. By setting the U-shaped anti-falling frame 55, the falling off between the load-bearing steel wire 31 and the supporting pulley 54 can be avoided. In addition, the holding rod is supported on the ground in the initial state of the resistance iron tower. By setting the supporting frame 56, the situation that the hydraulic cylinder 52 is in contact with the ground and causes wear and tear can be avoided.

[0038] Referring to Figure 5 A cut-off is provided on the load-bearing steel wire 31, and a telescopic steel wire group 311 is fixedly connected at the cut-off. The telescopic steel wire group 311 is used for length adjustment of the load-bearing steel wire 31, and also limits the segment of the load-bearing steel wire 31 from the node of the hanging pulley 32 to the connection point of the outer protective steel frame 51 to always have an inclination.

[0039] During the lifting process of the gantry, there is a discontinuity in the connection between the suspension pulley 32 and the tower body connector 4, leading to a connection with the higher tower body connector 4. During this process, the load-bearing steel wire 31 may have a length error, causing the suspension pulley 32 and the tower body connector 4 to fail to connect smoothly. However, the telescopic function of the telescopic steel wire assembly 311 can control the total length of the load-bearing steel wire 31, thereby adjusting its length and improving the tolerance of the tower body connector 4's installation position. This makes the device more convenient to use. Furthermore, by using the suspension pulley 32 as a node to reach the connection point of the outer protective steel frame 51, the length of the load-bearing steel wire 31 can be adjusted. The section is always restricted to an inclined state (i.e., the load-bearing steel wire 31a section always remains inclined). When section a is nearly horizontal, this will cause the externally assembled tower to be subjected to a large lateral tension when the gantry is used to lift objects, which can easily cause the tower to deform. Through the structural setting of the telescopic steel wire group 311, the telescopic steel wire group 311 can be prevented from sliding towards the output end of the hydraulic cylinder 52 through the suspension pulley 32. This limits the minimum length of the load-bearing steel wire 31a section. When the minimum length of section a is greater than the distance from the horizontal direction of the suspension pulley 32 to the axis of the outer protective steel frame 51, it can be ensured that the load-bearing steel wire 31a section always remains inclined.

[0040] Reference Figure 6 The telescopic steel wire assembly 311 includes a winding mechanism 313 and a pulley connector 314. One side of the winding mechanism 313 is fixedly connected to the main wire 312 via a connecting block, and the other end of the main wire 312 passes around the pulley connector 314 and connects to the winding end of the winding mechanism 313.

[0041] The distance between the winding mechanism 313 and the pulley connector 314 is the length of the telescopic wire assembly 311. When the winding mechanism 313 winds up the main wire 312, it can pull the pulley connector 314 to reduce the distance between the winding mechanism 313 and the pulley connector 314. Similarly, controlling the winding mechanism 313 to unwind will increase the distance between the winding mechanism 313 and the pulley connector 314, thereby achieving the length adjustment effect of the telescopic wire assembly 311.

[0042] Reference Figure 7 The winding mechanism 313 includes a shell plate 315, a winding reel 316 is movably sleeved on one side of the shell plate 315, a worm gear transmission mechanism 317 is provided inside the shell plate 315, a motor 318 is fixedly installed on the top of the shell plate 315, and the output end of the motor 318 is connected to the winding reel 316 through the worm gear transmission mechanism 317. An anti-derailment ring 319 is provided on one side of the shell plate 315, and the main wire 312 passes through the anti-derailment ring 319 and is wound on the winding reel 316.

[0043] The motor 318 outputs control to rotate the winding disc 316, thereby achieving the winding effect of the winding mechanism 313 on the main body wire 312, and the worm gear transmission mechanism 317 is arranged to drive, which can avoid the passive unwinding of the winding disc 316 when the telescopic steel wire group 311 is subjected to tension, thereby improving the safety performance.

[0044] With reference to Figure 8 The hanging pulley 32 comprises a fixed shell 321, the inside of the fixed shell 321 is provided with a pulley groove c and an accessory groove d, the pulley main part 323 is movably sleeved in the pulley groove c, the U-shaped plate 324 is arranged in the accessory groove, the inner wall of the U-shaped plate 324 movably sleeves the rotating disc 325, the side wall of the rotating disc 325 is provided with an arc convex block, the side wall of the arc convex block is provided with a tooth, the rotating disc 325 is drivingly connected with the inner wall of the U-shaped plate 324 through a torsional spring, and the top of the fixed shell 321 is fixedly connected with the hook 322.

[0045] When the load-bearing steel wire 31 is connected with the hanging pulley 32, the load-bearing steel wire 31 is bypassed from the side wall of the pulley main part 323, when the load-bearing steel wire 31 slides to the output direction of the hydraulic cylinder 52, the load-bearing steel wire 31 can apply force to the arc convex block of the rotating disc 325, so that the rotating disc 325 rotates, at this time, the arc convex block moves away from the side wall of the pulley main part 323, so that the load-bearing steel wire 31 can normally slide, since the rotating disc 325 is acted on by the torsional spring, the arc convex block on the side wall of the rotating disc 325 can be ensured to be in contact with the load-bearing steel wire 31, and when the load-bearing steel wire 31 slides reversely, the friction force is generated under the action of the tooth of the arc convex block, the rotating disc 325 rotates in the opposite direction to make the arc convex block approach the pulley main part 323 and press the load-bearing steel wire 31, so that the load-bearing steel wire 31 can only slide in one direction along the pulley main part 323, thereby when the connection between the hydraulic cylinder 52 and the load-bearing steel wire 31 is damaged, the hanging pulley 32 can provide emergency protection measures to avoid the direct falling of the holding rod.

[0046] With reference to Figure 8 The inside of the fixed shell 321 is provided with a vertical sliding groove in the accessory groove d, the U-shaped plate 324 is slidably sleeved in the vertical sliding groove, the top of the fixed shell 321 is provided with a through hole penetrating into the accessory groove d, the through hole is fixedly connected with a double-headed telescopic rod 326, the bottom end of the double-headed telescopic rod 326 is fixedly connected with the top of the double-headed telescopic rod 326, the top end is in contact with the end of the double-headed telescopic rod 326, and the double-headed telescopic rod 326 is used for synchronous control of the opening and closing of the hook 322 and the lifting of the U-shaped plate 324.

[0047] When the suspension pulley 32 is disconnected from the tower connecting piece 4 and connected to a higher tower connecting piece 4, the suspension pulley 32 needs to be unlocked from the one-way locking effect of the load-bearing steel wire 31. By setting the double-headed telescopic rod 326 to control the lifting of the U-shaped plate 324, the rotating disc 325 can be moved away from the pulley main part 323 to achieve the unlocking effect. In addition, by closing the opening of the hook 322 through the double-headed telescopic rod 326, the suspension pulley 32 can be prevented from falling off the tower connecting piece 4. When disassembling, the double-headed telescopic rod 326 synchronously controls the opening and closing of the hook 322 opening and the lifting of the U-shaped plate 324, thereby saving operation steps and improving work efficiency.

[0048] With reference to Figure 9 , the double-headed telescopic rod 326 includes a barrel 327 fixedly connected to the inner wall of the through hole of the fixed shell 321. A rotating block 328 is rotatably sleeved in the barrel 327. A threaded column one 329 is fixedly connected to the bottom of the rotating block 328. A bottom column 3210 is threadedly sleeved on the side wall of the threaded column one 329. The bottom end of the bottom column 3210 is fixedly connected to the U-shaped plate 324. A top column 3211 is fixedly connected to the top of the rotating block 328. A threaded column two 3212 is slidably sleeved on the side wall of the top column 3211. A threaded barrel 3213 is fixedly connected to the top end of the barrel 327. The threaded column two 3212 is threadedly sleeved on the inner wall of the threaded barrel 3213.

[0049] By rotating the threaded column two 3212 and the threaded barrel 3213 in threaded cooperation, the top end of the threaded column two 3212 can be lowered away from the end of the hook 322, thereby achieving the opening of the hook 322. At the same time, when the threaded column two 3212 rotates, the threaded column one 329 can be synchronously rotated under the connection effect of the top column 3211, the rotating block 328, and the threaded column one 329. The threaded column one 329 and the bottom column 3210 are threadedly cooperated to achieve the lifting control effect of the bottom column 3210, thereby synchronously controlling the lifting of the U-shaped plate 324. In the process, the threaded column two 3212 is lowered and the bottom column 3210 is raised.

[0050] With reference to Figure 9 , the bottom column 3210 and the top column 3211 are both polygonal columns. The inner cavity shape and size of the barrel 327 are matched with the bottom column 3210. The inner cavity shape and size of the threaded column two 3212 are matched with the top column 3211. By setting the shapes of the bottom column 3210 and the top column 3211, the bottom column 3210 can be prevented from rotating with the threaded column one 329, and the top column 3211 can be ensured to be rotated by the threaded column two 3212.

[0051] The foregoing is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and practice described. Accordingly, all such variations and modifications are intended to be included within the scope of the application as defined in the following claims, along with the full scope of equivalents to which such claims are entitled. It is to be understood that the application is defined by the appended claims and their equivalents.

Claims

1. A hydraulic lifting lightweight jacking device, comprising a jacking column (1) and a supporting mechanism (3) for supporting the jacking column (1), wherein the top of the jacking column (1) is provided with an external guy wire mechanism (2), and the supporting mechanism (3) is connected to the main material of the iron tower through a plurality of tower body connectors (4), characterized in that: The bottom end of the tower support column (1) is fixedly connected to a hydraulic mechanism (5), the hydraulic mechanism (5) includes an outer protective steel frame (51), and four hydraulic cylinders (52) are fixedly installed inside the outer protective steel frame (51). The supporting mechanism (3) consists of four load-bearing steel wires (31) and four suspension pulleys (32). The suspension pulleys (32) are connected to the tower body connector (4). One end of each of the four load-bearing steel wires (31) is fixed at the four corners of the bottom of the outer protective steel frame (51). The other end of each load-bearing steel wire (31) passes around the four suspension pulleys (32) and connects to the output ends of four hydraulic cylinders (52). The output of the hydraulic cylinders (52) is used to widen the distance between the two ends of the load-bearing steel wires (31) and shorten the distance between the bottom of the outer protective steel frame (51) and the tower body connector (4) to lift the tower support column (1). The load-bearing steel wire (31) is provided with a cut-off end, and a telescopic steel wire assembly (311) is fixedly connected to the cut-off end. The telescopic steel wire assembly (311) is used for adjusting the length of the load-bearing steel wire (31) and for limiting the section of the load-bearing steel wire (31) that reaches the connection point of the outer protective steel frame (51) with the suspension pulley (32) as the node to always have an inclination. The telescopic steel wire assembly (311) includes a winding mechanism (313) and a pulley connector (314). The main body wire (312) is fixedly connected to one side of the winding mechanism (313) through a connecting block. The other end of the main body wire (312) passes around the pulley connector (314) and connects to the winding end of the winding mechanism (313). The suspended pulley (32) includes a fixed shell (321), inside which are provided a pulley groove c and an accessory groove d. A pulley main component (323) is movably sleeved in the pulley groove c. A U-shaped plate (324) is provided in the accessory groove. A rotating disc (325) is movably sleeved on the inner wall of the U-shaped plate (324). An arc-shaped protrusion is provided on the side wall of the rotating disc (325), and teeth are provided on the side wall of the arc-shaped protrusion. The rotating disc (325) is connected to the inner wall of the U-shaped plate (324) through a torsion spring. A hook (322) is fixedly connected to the top of the fixed shell (321). The fixed shell (321) has a vertical sliding groove in the internal accessory groove d. The U-shaped plate (324) slides in the vertical sliding groove. The top of the fixed shell (321) has a through hole that extends into the accessory groove d. A double-headed telescopic rod (326) is fixedly connected in the through hole. The bottom end of the double-headed telescopic rod (326) is fixedly connected to the top end of the double-headed telescopic rod (326), and the top end is attached to the end of the double-headed telescopic rod (326). The double-headed telescopic rod (326) is used to synchronously control the opening and closing of the hook (322) and the lifting and lowering of the U-shaped plate (324). The double-end telescopic rod (326) comprises a barrel (327) fixedly connected with the inner wall of the through hole of the fixed shell (321), a rotating block (328) rotatably sleeved in the barrel (327), a threaded column I (329) fixedly connected with the bottom of the rotating block (328), a bottom column (3210) threadedly sleeved with the side wall of the threaded column I (329), the bottom end of the bottom column (3210) fixedly connected with the U-shaped plate (324), a top column (3211) fixedly connected with the top of the rotating block (328), a threaded column II (3212) slidably sleeved with the side wall of the top column (3211), and a threaded barrel (3213) fixedly connected with the top end of the barrel (327), the threaded column II (3212) threadedly sleeved with the inner wall of the threaded barrel (3213).

2. The hydraulic lifting light duty holding pole lifting device according to claim 1, characterized in that: The hydraulic cylinder (52) is fixedly connected with a support pulley (54), the outer protective steel frame (51) is fixedly connected with a center column (53) at the bottom center position, and the load-bearing steel wire (31) is wound around the support pulley (54) at the bottom and connected with the center column (53).

3. The hydraulic lifting light duty holding pole lifting device according to claim 2, characterized in that: The support pulley (54) is fixedly connected with a U-shaped anti-falling frame (55) at the bottom, the hydraulic cylinder (52) is fixedly connected with a support frame (56) at the bottom, and the load-bearing steel wire (31) passes through the inside of the U-shaped anti-falling frame (55).

4. The hydraulic lifting light duty holding pole lifting device according to claim 1, characterized in that: The winding mechanism (313) comprises a shell plate (315), the shell plate (315) is movably sleeved with a winding disc (316) on one side, the shell plate (315) is provided with a worm and gear transmission mechanism (317) inside, the shell plate (315) is fixedly installed with a motor (318) at the top, the output end of the motor (318) is drivingly connected with the winding disc (316) through the worm and gear transmission mechanism (317), and the shell plate (315) is provided with an anti-falling ring (319) on one side, and the main body wire (312) is wound on the winding disc (316) through the anti-falling ring (319).

5. The hydraulic lifting light duty holding pole lifting device according to claim 1, characterized in that: The bottom column (3210) and the top column (3211) are polygonal columns, the inner cavity shape and size of the barrel (327) are matched with the bottom column (3210), and the inner cavity shape and size of the threaded column II (3212) are matched with the top column (3211).

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