Power generation and illumination shelter equipment

By designing telescopic components, hydraulic rod devices and turrets in the power generation lighting shelter equipment, the problem that existing equipment cannot adjust the lighting angle is solved, multi-angle adjustment and lighting range expansion are achieved, and the reliability of the equipment is improved.

CN222363833UActive Publication Date: 2025-01-17HANGZHOU THORNE MASCH CO LTD
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Patent Information

Application Number
CN202420857987.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-23
Publication Date
2025-01-17
Estimated Expiration
2034-04-23

AI Technical Summary

Technical Problem

The existing power generation lighting equipment cannot adjust the angle of the lighting lamp, resulting in the inability to meet the lighting needs in actual use.

Method used

A power generation lighting shelter equipment is designed, which uses a telescopic component and a hydraulic rod device, combined with a rotating frame and a locking structure, so that the lighting component can be adjusted at multiple angles and change in height.

Benefits of technology

It realizes multi-angle adjustment of lighting lamps and expansion of lighting range, meets the lighting needs of different usage scenarios, and improves the actual use reliability of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses power generation lighting shelter equipment which comprises a box body, a generator is further arranged on the box body, an oil pump is arranged on one side of the generator, and a distribution box is further arranged in the box body. The telescopic assembly comprises a first telescopic arm, a second telescopic arm, a third telescopic arm, a fourth telescopic arm and a fifth telescopic arm, pulley steel rope assemblies are arranged among the first telescopic arm, the second telescopic arm, the third telescopic arm, the fourth telescopic arm and the fifth telescopic arm, and the end of the telescopic assembly is connected with a lighting assembly capable of being adjusted at multiple angles. According to the equipment, the telescopic assembly drives the lighting assembly to move upwards to change the height, a lighting lamp in the lighting assembly can freely change at multiple angles, multiple lighting directions are achieved, and the actual use reliability of the equipment is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of power generation and lighting equipment, in particular to power generation and lighting cabin equipment. Background Art

[0002] The power generation and lighting cabin equipment is a device used for outdoor lighting. It generally uses a trolley as a carrier, integrates the generator, electronic control device and hydraulic device on the trolley, and uses a multi-stage telescopic transmission rod to change the height of the lighting lamp. The disadvantage of the existing power generation and lighting cabin equipment is that the lamps used for lighting cannot be adjusted in angle, resulting in the inability of personnel to adaptively adjust the lighting angle and range according to actual conditions during actual use. This causes the equipment to be unable to meet normal lighting needs during use, and people have conducted a lot of research on this. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a power generation and lighting cabin device, which can solve the above-mentioned problems in the existing technology.

[0004] The utility model is realized through the following technical scheme: a power generation and lighting cabin equipment of the utility model comprises a box body, a generator is also arranged on the box body, an oil pump is arranged on one side of the generator, and a distribution box is also arranged in the box body. It is characterized in that a telescopic assembly is arranged on the box body, and the telescopic assembly comprises a first telescopic arm, a second telescopic arm, a third telescopic arm, a fourth telescopic arm and a fifth telescopic arm, a pulley steel rope assembly is arranged between the first telescopic arm, the second telescopic arm, the third telescopic arm, the fourth telescopic arm and the fifth telescopic arm, and a lighting assembly capable of multi-angle adjustment is connected to the end of the telescopic assembly.

[0005] According to a further technical solution, the lighting assembly includes a shell, a fixing rod is provided on the shell, connecting plates are provided on both sides of the two ends of the fixing rod, a rotating frame is provided on one side of the connecting plate for rotation, a locking structure is provided between the rotating frame and the connecting plate for locking with the connecting plate after the rotating frame is rotated and adjusted, and the lighting lamp is hingedly arranged in the rotating frame.

[0006] According to a further technical solution, the locking structure includes a plurality of threaded holes arranged on one side of the connecting disk, the threaded holes are arranged in a ring shape on the surface of the connecting disk, and two waist-shaped holes are arranged in the rotating frame.

[0007] A further technical solution is that a matching tube is provided at the top of the fifth telescopic arm, a connecting block is provided at the top of the matching tube, a connecting assembly is provided between the connecting block and the matching tube, a mounting frame is provided on one side of the fifth telescopic arm, the mounting frame is hinged to the shell, an articulated seat is also provided in the shell, a hydraulic rod device is hinged in the mounting frame, and a push rod part of the hydraulic rod device is hinged to the articulated seat.

[0008] According to a further technical solution, the connection assembly includes a through hole arranged in the matching cylinder, a rotating cylinder is arranged at the bottom of the connection block, a plurality of paired through holes are arranged in the rotating cylinder, and the rotating cylinder is inserted into the matching cylinder.

[0009] According to a further technical solution, the telescopic assembly also includes a hydraulic push rod arranged in the box body, a second telescopic arm is slidably arranged in the first telescopic arm, a third telescopic arm is slidably arranged in the second telescopic arm, a fourth telescopic arm is slidably arranged in the third telescopic arm, a fifth telescopic arm is slidably arranged in the fourth telescopic arm, and a push rod portion of the hydraulic push rod is fixedly connected to one side of the second telescopic arm.

[0010] A further technical solution is that the pulley and steel rope assembly includes a first connecting seat arranged on both sides of the first telescopic arm, a first pulley seat is arranged on both sides of the outer side of the second telescopic arm, a second through hole located in the second telescopic arm is arranged on one side of the first pulley seat, a steel rope is arranged in the first connecting seat, the steel rope passes through the pulley surface in the first pulley seat and then passes through the second through hole, and the steel rope passes through the bottom of the third telescopic arm.

[0011] A further technical solution is that the pulley and steel rope assembly also includes a third connecting seat arranged on both sides of the second telescopic arm, and a third pulley seat is arranged on both sides of the third telescopic arm. A steel rope is arranged in the third connecting seat. The steel rope passes through the outer surface of the pulley of the third pulley seat, passes through one side of the third telescopic arm, and then bypasses the bottom of the fourth telescopic arm.

[0012] A further technical solution is that the pulley and steel rope assembly also includes a second connecting seat arranged on both sides of the third telescopic arm, a second pulley seat is arranged on both sides of the fourth telescopic arm, a first through hole is arranged on one side of the second pulley seat, a pulley is arranged in the second pulley seat, and a steel rope is arranged in the second connecting seat. The steel rope passes through the outer surface of the pulley in the second pulley seat and then passes through the first through hole, and then passes through the bottom of the fifth telescopic arm.

[0013] A further technical solution is that a base is provided at the bottom of the fifth telescopic arm, the fourth telescopic arm and the third telescopic arm, a plurality of sliding holes are provided in the base, and a plurality of transition holes are also provided at the bottom of the fifth telescopic arm, the fourth telescopic arm and the third telescopic arm. After the steel rope in the pulley steel rope assembly passes through the transition holes and the sliding holes, it is abutted against the bottom of the fifth telescopic arm, the fourth telescopic arm and the third telescopic arm.

[0014] The beneficial effects of the utility model are:

[0015] 1. By setting the rotating frame to rotate relative to the connecting plate, and then making the illuminating lamp rotatable relative to the rotating frame, the illuminating lamp can be adjusted at multiple angles. When the illuminating lamps are all arranged toward the lower side of the shell, centralized lighting can be achieved. When the illuminating lamps are arranged to face four directions respectively, lighting in four directions can be achieved. When the illuminating lamps are arranged to face two sides, lighting can be achieved toward both sides.

[0016] Second, by utilizing the specific settings of the hydraulic rod device, connecting block, mounting frame, connecting shaft, shell and lighting, the pitch angle of the shell and the lighting can be changed, further improving the range of lighting. Through the structural design of perforations, rotating cylinders, through holes and matching cylinders, the shell and the lighting can be rotated in a plane, so that the orientation of the lighting can be changed, which is more convenient for personnel to use in practice.

[0017] 3. Through the specific setting of the telescopic component, the lighting component can be easily adjusted by personnel when it is at the bottom. After the adjustment is completed, the height of the lighting component can be changed through the telescopic component to meet actual lighting needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] For ease of explanation, the present invention is described in detail by the following specific embodiments and drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of a power generation and lighting cabin equipment of the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram at A in the middle;

[0021] Figure 3 for Figure 1 Schematic diagram at B in the middle;

[0022] Figure 4 for Figure 1 Schematic diagram of the internal structure of the device;

[0023] Figure 5 for Figure 1 A schematic diagram of lighting in which the lighting lamps face the same direction;

[0024] Figure 6 for Figure 5 Schematic diagram of the central lighting illuminating the surroundings;

[0025] Figure 7 for Figure 5 Schematic diagram of the central lighting illuminating both sides;

[0026] Figure 8 for Figure 1 Schematic diagram of the structure of the equipment part;

[0027] Fig. 9 for Figure 8 Schematic diagram at C in the middle;

[0028] Fig.10 for Figure 8 A schematic diagram of the structure of the first section of the device;

[0029] Fig.11 for Fig.10 Schematic diagram at D in the middle;

[0030] Fig.12 for Fig.10 Schematic diagram at E in the middle;

[0031] Fig.13 for Figure 8 A schematic diagram of the structure of the second section of the device;

[0032] Fig.14 for Fig.13 Schematic diagram at F in the middle;

[0033] In the figure, the box 11, the first telescopic arm 12, the brake 13, the guide wheel 14, the fixed frame 15, the sliding frame 16, the hinged rod 17, the telescopic rod 18, the base 19, the oil pump 21, the shell 22, the generator 23, the distribution box 24, the hinged seat 25, the connecting shaft 26, the fixed rod 27, the rotating frame 28, the waist-shaped hole 29, the lighting lamp 31, the threaded hole 32, the connecting plate 33, the hydraulic push rod 34, the fourth telescopic arm 35, the fifth telescopic arm 36, the connecting block 37, the hydraulic rod device 38, the mounting frame 39, the through hole 44, the rotating cylinder 45, the through hole 46, the matching cylinder 47, the third telescopic arm 48, the second telescopic arm 49, the first connecting seat 50, the first through hole 51, the second pulley seat 52, the second connecting seat 53, the first pulley seat 54, the second through hole 55, the transition hole 56, the base 57, and the sliding hole 58. DETAILED DESCRIPTION

[0034] like Figure 1-Figure 14 As shown, the utility model is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are Figure 1The up-down, left-right, front-back directions of the projection relationship are consistent. The utility model is a power generation and lighting cabin device, including a box body 11, a wheel is arranged on the box body 11, a guide wheel 14 is arranged at the end of the box body 11, a brake 13 is arranged on one side of the guide wheel 14, and a plurality of fixed frames 15 are arranged at the bottom of the box body 11. A sliding frame 16 is arranged to slide in the fixed frame 15, a hinged rod 17 is hinged in the sliding frame 16, a telescopic rod 18 is arranged to slide in the hinged rod 17, and a foot 19 is hinged in the telescopic rod 18. The guide wheel 14 can be used to rotate to facilitate the steering of the vehicle head, and the brake 13 acts as a brake to brake the vehicle, and the sliding frame 16 is slid out of the fixed frame 15, and the hinged rod 17, the telescopic rod 18 and the foot 19 are used to support the equipment as a whole.

[0035] Advantageously, a telescopic assembly is provided on the box body 11, and a lighting assembly capable of multi-angle adjustment is connected to the end of the telescopic assembly. The telescopic assembly includes a hydraulic push rod 34 arranged in the box body 11, and the telescopic assembly also includes a first telescopic arm 12, a second telescopic arm 49 is slidably provided in the first telescopic arm 12, a third telescopic arm 48 is slidably provided in the second telescopic arm 49, a fourth telescopic arm 35 is slidably provided in the third telescopic arm 48, and a fifth telescopic arm 36 is slidably provided in the fourth telescopic arm 35. One end of the outer shell of the hydraulic push rod 34 is fixed to the first telescopic arm 12, and a push rod portion of the hydraulic push rod 34 is fixedly connected to one side of the second telescopic arm 49. A pulley steel rope assembly is provided between the first telescopic arm 12, the second telescopic arm 49, the third telescopic arm 48, the fourth telescopic arm 35 and the fifth telescopic arm 36, so that after the hydraulic push rod 34 pushes the second telescopic arm 49 to rise, it can synchronously drive the third telescopic arm 48, the fourth telescopic arm 35 and the fifth telescopic arm 36 to move upward synchronously and fully unfold. The lighting assembly includes a lighting lamp 31 and a shell 22.

[0036] Advantageously, a generator 23 is also provided on the box body 11, an oil pump 21 is provided on one side of the generator 23, and a distribution box 24 is also provided in the box body 11. The distribution box 24 is electrically connected to the generator 23, the oil pump 21, the hydraulic push rod 34 and the lighting lamp 31. Personnel can control the operation of the generator 23, the oil pump 21, the hydraulic push rod 34 and the lighting lamp 31 through the distribution box 24. The generator 23 supplies power to the lighting lamp 31, the oil pump 21 and the distribution box 24, and the oil pump 21 is connected to the hydraulic push rod 34.

[0037] Advantageously, a mating cylinder 47 is provided at the top of the fifth telescopic arm 36, a connecting block 37 is provided at the top of the mating cylinder 47, a connecting assembly is provided between the connecting block 37 and the mating cylinder 47 to lock the connecting block 37 relative to the mating cylinder 47 after rotation, a mounting frame 39 is provided on one side of the fifth telescopic arm 36, the mounting frame 39 extends into the shell 22 and is hinged through the connecting shaft 26 in the shell 22, an articulated seat 25 is also provided in the shell 22, a hydraulic rod device 38 is hingedly provided in the mounting frame 39, a push rod portion of the hydraulic rod device 38 is hingedly provided with the articulated seat 25, and the shell 22 can be swung relative to the connecting block 37 after the hydraulic rod device 38 is operated, and the shell 22 and the lighting lamp 31 can be swung to change the lighting direction of the lighting lamp 31.

[0038] Advantageously, the connecting assembly includes a through hole 46 provided in the matching cylinder 47, a rotating cylinder 45 is provided at the bottom of the connecting block 37, a plurality of paired through holes 44 are provided in the rotating cylinder 45, the rotating cylinder 45 is inserted into the matching cylinder 47, the rotating cylinder 45 and the matching cylinder 47 are locked by providing bolts in the through holes 44 and the through hole 46, a nut is provided on the bolt, and the rotating cylinder 45 is connected and fixed to the matching cylinder 47 after being rotated.

[0039] Advantageously, the lighting assembly includes a shell 22, on which a fixing rod 27 is provided, and connecting plates 33 are provided on both sides of both ends of the fixing rod 27. A rotating frame 28 is rotatably provided on one side of the connecting plate 33, and a locking structure is provided between the rotating frame 28 and the connecting plate 33 for locking with the connecting plate 33 after the rotating frame 28 is rotated and adjusted. The lighting lamp 31 is hingedly provided in the rotating frame 28, and the rotating frame 28 is arranged to rotate relative to the connecting plate 33, and then the lighting lamp 31 is allowed to rotate relative to the rotating frame 28, so that the lighting lamp 31 can be adjusted at multiple angles. When the lighting lamps 31 are all arranged to face the lower side of the shell 22, centralized lighting can be achieved. When the lighting lamps 31 are arranged to face four directions respectively, lighting in four directions can be achieved. When the lighting lamps 31 are arranged to face both sides, lighting can be achieved.

[0040] Advantageously, the locking structure includes a plurality of threaded holes 32 disposed on one side of the connecting disk 33, the threaded holes 32 are annularly disposed on the surface of the connecting disk 33, and two waist-shaped holes 29 are disposed in the rotating frame 28. By arranging bolts in the waist-shaped holes 29 and the threaded holes 32 after the waist-shaped holes 29 are aligned with the threaded holes 32, the rotating frame 28 is fixed to one side of the connecting disk 33.

[0041] Advantageously, the pulley and steel rope assembly further comprises a first connecting seat 50 arranged on both sides of the first telescopic arm 12, a first pulley seat 54 is arranged on both sides of the outer side of the second telescopic arm 49, a second penetration hole 55 located in the second telescopic arm 49 is arranged on one side of the first pulley seat 54, a steel rope is arranged in the first connecting seat 50, the steel rope passes through the pulley surface in the first pulley seat 54 and then passes through the second penetration hole 55, and the steel rope passes through the bottom of the third telescopic arm 48, so that after the second telescopic arm 49 moves upward relative to the first telescopic arm 12, the third telescopic arm 48 can move upward synchronously relative to the second telescopic arm 49.

[0042] Advantageously, the pulley and steel rope assembly also includes a third connecting seat 62 arranged on both sides of the second telescopic arm 49, a third pulley seat 63 is arranged on both sides of the third telescopic arm 48, and a steel rope is arranged in the third connecting seat 62. The steel rope passes through the outer surface of the pulley of the third pulley seat 63 and then passes through one side of the third telescopic arm 48, and then bypasses the bottom of the fourth telescopic arm 35. After the third telescopic arm 48 moves upward relative to the second telescopic arm 49, the fourth telescopic arm 35 can be moved upward relative to the third telescopic arm 48.

[0043] Advantageously, the pulley and steel rope assembly also includes a second connecting seat 53 arranged on both sides of the third telescopic arm 48, a second pulley seat 52 is arranged on both sides of the fourth telescopic arm 35, a first penetration hole 51 is arranged on one side of the second pulley seat 52, a pulley is arranged in the second pulley seat 52, and a steel rope is arranged in the second connecting seat 53. The steel rope passes through the outer surface of the pulley in the second pulley seat 52 and then passes through the first penetration hole 51, and then passes through the bottom of the fifth telescopic arm 36. At this time, after the fourth telescopic arm 35 moves upward relative to the third telescopic arm 48, it can drive the fifth telescopic arm 36 to move upward relative to the fourth telescopic arm 35.

[0044] Beneficially, a base 57 is provided at the bottom of the fifth telescopic arm 36, the fourth telescopic arm 35 and the third telescopic arm 48, a plurality of sliding holes 58 are provided in the base 57, and a plurality of transition holes 56 are also provided at the bottom of the fifth telescopic arm 36, the fourth telescopic arm 35 and the third telescopic arm 48. After the steel rope in the pulley steel rope assembly passes through the transition hole 56 and the sliding hole 58, it abuts against the bottom of the fifth telescopic arm 36, the fourth telescopic arm 35 and the third telescopic arm 48.

[0045] Advantageously, the base 57 at the bottom of the fourth telescopic arm 35 and the base 57 at the bottom of the fifth telescopic arm 36 are oriented in the same direction, and the base 57 at the bottom of the third telescopic arm 48 is oriented perpendicular to the bases 57 at the bottom of the fourth telescopic arm 35 and the fifth telescopic arm 36 .

[0046] The device drives the lighting assembly to move upward to change the height through the telescopic assembly, and the lighting lamp 31 in the lighting assembly can be freely changed at multiple angles, realizing multiple lighting directions and improving the actual use reliability of the device.

[0047] When the illuminating lamp 31 is directed toward the lower side of the housing 22 , the housing 22 is swung by the hydraulic rod device 38 , so that the illuminating lamp 31 can be directed toward one direction to illuminate a wide range.

[0048] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A power generation and lighting cabin device, comprising a box (11), a generator (23) is further arranged on the box (11), an oil pump (21) is arranged on one side of the generator (23), and a distribution box (24) is further arranged in the box (11), characterized in that: The box body (11) is provided with a telescopic assembly, which includes a first telescopic arm (12), a second telescopic arm (49), and one or more of a third telescopic arm (48), a fourth telescopic arm (35) and a fifth telescopic arm (36); a pulley and steel rope assembly is provided between the first telescopic arm (12), the second telescopic arm (49), the third telescopic arm (48), the fourth telescopic arm (35) and the fifth telescopic arm (36); and a lighting assembly capable of being adjusted at multiple angles is connected to the end of the telescopic assembly.

2. The power generation and lighting shelter equipment according to claim 1, characterized in that: The lighting assembly comprises a housing (22) and a lighting lamp (31); a fixing rod (27) is arranged on the housing (22); connecting plates (33) are arranged on both sides of both ends of the fixing rod (27); a rotating frame (28) is rotatably arranged on one side of the connecting plate (33); a locking structure is arranged between the rotating frame (28) and the connecting plate (33) for locking with the connecting plate (33) after the rotating frame (28) is rotated and adjusted; and the lighting lamp (31) is hingedly arranged in the rotating frame (28).

3. The power generation and lighting shelter equipment according to claim 2, characterized in that: The locking structure comprises a plurality of threaded holes (32) arranged on one side of the connection disk (33); the threaded holes (32) are arranged in an annular shape on the surface of the connection disk (33); and two waist-shaped holes (29) are arranged in the rotating frame (28).

4. The power generation and lighting shelter equipment according to claim 2, characterized in that: A matching tube (47) is arranged at the top of the fifth telescopic arm (36), a connecting block (37) is arranged at the top of the matching tube (47), a connecting assembly is arranged between the connecting block (37) and the matching tube (47), a mounting frame (39) is arranged on one side of the fifth telescopic arm (36), the mounting frame (39) is hinged to the shell (22), an articulated seat (25) is also arranged in the shell (22), a hydraulic rod device (38) is hinged in the mounting frame (39), and a push rod portion of the hydraulic rod device (38) is hinged to the articulated seat (25).

5. The power generation and lighting shelter equipment according to claim 4, characterized in that: The connection assembly comprises a through hole (46) arranged in the matching cylinder (47); a rotating cylinder (45) is arranged at the bottom of the connection block (37); a plurality of paired through holes (44) are arranged in the rotating cylinder (45); and the rotating cylinder (45) is inserted into the matching cylinder (47).

6. The power generation and lighting shelter equipment according to claim 1, characterized in that: The telescopic assembly also includes a hydraulic push rod (34) arranged in the box body (11); a second telescopic arm (49) is slidably arranged in the first telescopic arm (12); a third telescopic arm (48) is slidably arranged in the second telescopic arm (49); a fourth telescopic arm (35) is slidably arranged in the third telescopic arm (48); a fifth telescopic arm (36) is slidably arranged in the fourth telescopic arm (35); and a push rod portion of the hydraulic push rod (34) is fixedly connected to one side of the second telescopic arm (49).

7. A power generation and lighting shelter device according to any one of claims 1 to 6, characterized in that: The pulley and steel rope assembly includes a first connecting seat (50) arranged on both sides of the first telescopic arm (12), a first pulley seat (54) is arranged on both sides of the outer side of the second telescopic arm (49), a second through hole (55) located in the second telescopic arm (49) is arranged on one side of the first pulley seat (54), a steel rope is arranged in the first connecting seat (50), the steel rope passes through the pulley surface in the first pulley seat (54) and then passes through the second through hole (55), and the steel rope passes through the bottom of the third telescopic arm (48).

8. A power generation and lighting shelter device according to any one of claims 1 to 6, characterized in that: The pulley steel rope assembly also includes a third connecting seat (62) arranged on both sides of the second telescopic arm (49), and a third pulley seat (63) is arranged on both sides of the third telescopic arm (48). A steel rope is arranged in the third connecting seat (62). The steel rope passes through the outer surface of the pulley of the third pulley seat (63), passes through one side of the third telescopic arm (48), and then passes around the bottom of the fourth telescopic arm (35).

9. A power generation and lighting shelter device according to any one of claims 1-6, characterized in that: The pulley steel rope assembly also includes a second connecting seat (53) arranged on both sides of the third telescopic arm (48), a second pulley seat (52) is arranged on both sides of the fourth telescopic arm (35), a first penetration hole (51) is arranged on one side of the second pulley seat (52), a pulley is arranged in the second pulley seat (52), and a steel rope is arranged in the second connecting seat (53), the steel rope passes through the outer surface of the pulley in the second pulley seat (52), passes through the first penetration hole (51), and then passes through the bottom of the fifth telescopic arm (36).

10. A power generation and lighting shelter device according to any one of claims 1 to 6, characterized in that: A base (57) is provided at the bottom of the fifth telescopic arm (36), the fourth telescopic arm (35) and the third telescopic arm (48), and a plurality of sliding holes (58) are provided in the base (57). A plurality of transition holes (56) are also provided at the bottom of the fifth telescopic arm (36), the fourth telescopic arm (35) and the third telescopic arm (48). After the steel rope in the pulley steel rope assembly passes through the transition holes (56) and the sliding holes (58), it abuts against the bottom of the fifth telescopic arm (36), the fourth telescopic arm (35) and the third telescopic arm (48).