Lifting device for cable trench cover plate

Abstract

The utility model provides a lifting device for a cable trench cover plate. The lifting device comprises universal rollers, a moving frame, a moving rod, a rotating hook, a steel wire rope, a winding mechanism and a driving mechanism, the rotating hook is moved to the position above the through groove and then below the steel wire rope, the rotating hook is inserted into the through groove, then the rotating hook is in lap joint with the bottom of the cover plate under the action of the driving mechanism, then the steel wire rope is wound, and therefore the cover plate is lifted; in the process, the cover plate is lifted up through mechanical equipment, and therefore the problems that workers are difficult to open the cover plate, and the body is injured due to the fact that force is too large are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting equipment, and particularly relates to a lifting device for cable trench covers. Background Technique

[0002] As an important carrier for the transmission of substation information, data, and electric energy, optical cables are the "blood vessels" of the entire substation and are generally laid in dedicated cable trenches. Each cable trench cover weighs about more than 100 kilograms. When staff members inspect and check the operation status of cables and optical cables, they usually need to open and replace the cable covers at any time. The general way to open the covers is for two workers to put hooks into the through slots of the covers and then both of them pull the covers out simultaneously. However, since the sides of the covers are perpendicular to the upper and lower planes, the friction between the covers and between the covers and the surrounding cover slots or the ground is large, making it difficult for workers to open the covers and prone to excessive force causing damage to the body. Content of the Utility Model

[0003] The purpose of the utility model is to design a lifting device for cable trench covers to solve the problems raised in the background technique. To achieve the above purpose, the utility model provides the following technical solution: it includes a moving frame provided with brakeable universal rollers, rotating hooks rotatably connected to both ends of a moving rod and capable of extending into the through slots of the covers, and a steel wire rope fixedly connected to the middle of the moving rod. A winding mechanism for winding and unwinding the steel wire rope is provided at the top of the moving frame, a driving mechanism for driving the rotating hooks to open and close is provided at the top of the moving rod, and the bottom hooks of the rotating hooks are lapped on the bottom of the covers.

[0004] Further, the winding mechanism includes a cross plate fixedly connected to the top of the moving frame, a first support ear fixedly connected to the top of the cross plate, a winding drum rotatably connected to the first support ear and used for winding and unwinding the steel wire rope, and a driving component fixedly connected to the bottom of the cross plate for driving the winding drum to rotate.

[0005] Further, the driving component includes a support plate fixedly connected to the bottom of the cross plate through a connecting column, a second support ear fixedly connected to the support plate, and a worm rotatably connected to the second support ear. One end of the winding drum penetrates through the first support ear, and a worm gear meshing with the worm is fixedly connected to the end of the winding drum penetrating through the first support ear. One end of the worm is fixedly connected to the output end of a first motor fixedly connected to the support plate.

[0006] Further, two baffle plates are provided on the winding drum, and the steel wire rope is located between the two baffle plates.

[0007] Further, a sleeve is provided on the moving rod. The driving mechanism includes a screw rod rotatably connected to the sleeve. A through hole is provided on the screw rod. The steel wire rope passes through the through hole and is fixedly connected to the moving rod. A moving column is threadedly connected to the screw rod. A guiding rod parallel to the moving rod is provided on the moving column. A moving block is slidably connected to the guiding rod. The bottom of the moving block is rotatably connected to the top end of the rotating hook.

[0008] Further, a limiting platform is provided at the end of the guiding rod.

[0009] Further, the upper end of the screw rod is rotatably connected to the fixed block. A first gear is further provided at the end of the screw rod. A second motor is fixedly connected to the fixing plate of the fixed block. The output end of the second motor is fixedly connected to a second gear meshing with the first gear. The fixed block is fixedly connected to the moving rod through a vertical rod.

[0010] Further, a loading frame is provided on the other side of the fixed block relative to the first motor. A storage battery is placed on the loading frame. The storage battery is connected to the first motor.

[0011] Further, a counterweight block is placed on the loading frame.

[0012] Further, a third gear meshing with the first gear is rotatably connected to the other side of the fixed block relative to the first gear. The third gear and the second gear are symmetrically arranged.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] In the present utility model, the rotating hook is first moved above the through slot and then below the steel wire rope. The rotating hook is inserted into the through slot. Subsequently, the rotating hook is lapped on the bottom of the cover plate under the action of the driving mechanism. Then, the steel wire rope is wound up, thereby lifting the cover plate. In this process, the cover plate is lifted by mechanical equipment, thus eliminating the problems that it is difficult for workers to open the cover plate and it is easy to cause physical injuries due to excessive force. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2This is a partial sectional view schematic diagram of the present utility model.

[0018] Wherein: 1, cross plate; 2, moving frame; 3, storage battery; 4, load-carrying frame; 5, second motor; 6, moving column; 7, screw rod; 8, sleeve; 9, through groove; 10, cover plate; 11, moving rod; 12, rotating hook; 13, moving block; 14, limiting platform; 15, guiding rod; 16, vertical rod; 17, fixed block; 18, second gear; 19, first gear; 20, third gear; 21, baffle; 22, steel wire rope; 23, first motor; 24, support plate; 25, worm; 26, worm gear; 27, first support ear; 28, reel. Specific embodiments

[0019] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in combination with the accompanying drawings and preferred embodiments, details the specific embodiments, structures, features and their effects of the present utility model as follows.

[0020] Embodiment: Please refer to Figure 1-2 , a lifting device for a cable trench cover plate, including a moving frame 2 provided with brakeable universal rollers, rotating hooks 12 rotatably connected to both ends of a moving rod 11 and capable of extending into a through groove 9 of a cover plate 10, and a steel wire rope 22 fixedly connected to the middle of the moving rod 11. A winding mechanism for winding and unwinding the steel wire rope 22 is provided at the top of the moving frame 2, and a driving mechanism for driving the rotating hooks 12 to open and close is provided at the top of the moving rod 11. The bottom hooks of the rotating hooks 12 are lapped on the bottom of the cover plate 10. When it is necessary to lift the cover plate 10, only need to move the moving frame 2 above the cover plate 10, manually move the moving rod 11, align the rotating hooks 12 with the through groove 9 on the cover plate 10, then below the steel wire rope 22, insert the rotating hooks 12 into the through groove 9, and then the rotating hooks 12 open, so that the bottom hooks of the rotating hooks 12 are lapped on the bottom of the cover plate 10. Subsequently, the steel wire rope 22 is wound, and further the cover plate 10 is lifted. This process lifts the cover plate 10 through mechanical equipment, thus eliminating the problems that it is difficult for workers to open the cover plate 10 and it is easy to cause physical injuries due to excessive force. Among them, the above-mentioned rotatable connection method can be realized by the clearance fit of a rotating shaft and a sleeve shaft.

[0021] In this embodiment, the winding mechanism includes a cross plate 1 fixedly connected to the top of the moving frame 2, a first support ear 27 fixedly connected to the top of the cross plate 1, a drum 28 rotatably connected to the first support ear 27 and used for winding and unwinding a steel wire rope 22, and a driving assembly fixedly connected to the bottom of the cross plate 1 for driving the drum 28 to rotate. The driving assembly includes a support plate 24 fixedly connected to the bottom of the cross plate 1 through a connecting column, a second support ear fixedly connected to the support plate 24, and a worm 25 rotatably connected to the second support ear. One end of the drum 28 penetrates through the first support ear 27, and a worm gear 26 meshing with the worm 25 is fixedly connected to the end of the drum 28 penetrating through the first support ear 27. One end of the worm 25 is fixedly connected to the output end of a first motor 23 fixedly connected to the support plate 24. When the first motor 23 is started, the worm 25 will rotate, thereby causing the worm gear 26 to rotate, and further causing the drum 28 to rotate, so as to realize the winding and unwinding of the steel wire rope 22. The transmission of the worm gear 26 and the worm 25 can self-lock while amplifying the torque, preventing the sudden fall of the cover plate 10 when the first motor 23 loses power. In addition, two baffles 21 are provided on the drum 28, and the steel wire rope 22 is located between the two baffles 21 to prevent the steel wire rope 22 from slipping out of the drum 28. A sleeve 8 is provided on the moving rod 11. The driving mechanism includes a screw rod 7 rotatably connected to the sleeve 8. The screw rod 7 is provided with a through hole, and the steel wire rope 22 penetrates through the through hole and is fixedly connected to the moving rod 11. A moving column 6 is threadedly connected to the screw rod 7. A guide rod 15 parallel to the moving rod 11 is provided on the moving column 6. A moving block 13 is slidably connected to the guide rod 15. The above-mentioned rotational connection method can adopt the form of bearing connection, and the sliding connection can adopt the form of clearance fit. The bottom of the moving block 13 is rotatably connected to the top end of a rotating hook 12. The upper end of the screw rod 7 is rotatably connected to a fixed block 17. A first gear 19 is further provided at the end of the screw rod 7. A second motor 5 is fixedly connected to the fixing plate of the fixed block 17. The output end of the second motor 5 is fixedly connected to a second gear 18 meshing with the first gear 19. The rotational connection method here can be realized by the cooperation of a rotating shaft and a rotating cylinder. Therefore, when the second motor 5 rotates, the second gear 18, the first gear 19, and the screw rod 7 will rotate in sequence, thereby causing the up and down movement of the moving column 6, and further causing the movement of the moving block 13, thereby causing the opening and closing of the rotating hook 12, and further realizing the lapping of the cover plate 10. The fixed block 17 is fixedly connected to the moving rod 11 through a vertical rod 16, ensuring the synchronous rotation of the fixed block 17 and the moving rod 11. Therefore, when the worker holds the moving rod 11 and aligns the rotating hook 12 with the through groove 9 (limiting the rotation of the moving rod 11), the stable rotation of the screw rod 7 is realized. A limiting platform 14 is provided at the end of the guide rod 15 to prevent the moving block 13 from running out. In addition, a loading frame 4 is provided on the other side of the fixed block 17 relative to the first motor 23. A storage battery 3 is placed on the loading frame 4. The storage battery 3 is connected to the first motor 23. A counterweight is placed on the loading frame 4 to supply power to the second motor 5 and prevent the fixed block 17 from tilting, thereby affecting the opening of the cover plate 10.The fixed block 17 is rotatably connected to the other side of the first gear 19 with a third gear 20 meshing with the first gear 19. The third gear 20 and the second gear 18 are symmetrically arranged, which helps to eliminate the radial force of the first gear 19 and ensures the stable rotation of the screw rod 7.

[0022] Working principle

[0023] When it is necessary to lift the cover plate 10, only need to move the moving frame 2 above the cover plate 10, move the moving rod 11 by hand, and align the rotating hook 12 with the through groove 9 on the cover plate 10. Then, the first motor 23 starts in the forward direction, and the worm 25 will rotate, which causes the worm wheel 26 to rotate, and then causes the reel 28 to rotate, so as to realize the lowering of the steel wire rope 22. When the bottom hook of the rotating hook 12 passes through the through groove 9, the second motor 5 starts, and the second gear 18, the first gear 19 and the screw rod 7 will rotate in sequence, so that the moving column 6 moves downward, and then causes the moving block 13 to move inward, so that the rotating hook 12 opens. When the bottom hook of the rotating hook 12 overlaps the bottom of the cover plate 10, the second motor 5 stops. Then, the first motor 23 starts in the reverse direction, and the steel wire rope 22 is wound up, and then the cover plate 10 is lifted. Therefore, this utility model lifts the cover plate 10 through mechanical equipment, thus eliminating the problems that it is difficult for workers to open the cover plate 10 and it is easy to cause physical injury due to excessive force.

[0024] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are only for the purpose of illustration.

[0025] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A lifting device for cable trench covers, characterized in that: It includes a mobile rack (2) provided with steerable universal rollers, rotating hooks (12) rotatably connected to both ends of a moving rod (11) and capable of extending into a through groove (9) of a cover plate (10), and a steel wire rope (22) fixedly connected to the middle of the moving rod (11). A winding mechanism for winding and unwinding the steel wire rope (22) is provided at the top of the mobile rack (2), a driving mechanism for driving the rotating hooks (12) to open and close is provided at the top of the moving rod (11), and the bottom hooks of the rotating hooks (12) are lapped on the bottom of the cover plate (10).

2. The lifting device for the cable trench cover plate according to claim 1, wherein: The winding mechanism includes a cross plate (1) fixedly connected to the top of the mobile rack (2), a first support ear (27) fixedly connected to the top of the cross plate (1), a winding drum (28) rotatably connected to the first support ear (27) and used for winding and unwinding the steel wire rope (22), and a driving assembly fixedly connected to the bottom of the cross plate (1) for driving the winding drum (28) to rotate.

3. The lifting device for cable trench covers according to claim 2, characterized in that: The driving assembly includes a support plate (24) fixedly connected to the bottom of the cross plate (1) through a connecting column, a second support ear fixedly connected to the support plate (24), and a worm (25) rotatably connected to the second support ear. One end of the winding drum (28) penetrates through the first support ear (27), and a worm gear (26) meshing with the worm (25) is fixedly connected to the end of the winding drum (28) penetrating through the first support ear (27). One end of the worm (25) is fixedly connected to the output end of a first motor (23) fixedly connected to the support plate (24).

4. The lifting device for cable trench covers according to claim 2, characterized in that: Two baffles (21) are provided on the winding drum (28), and the steel wire rope (22) is located between the two baffles (21).

5. The lifting device for cable trench covers according to claim 3, characterized in that: A sleeve (8) is provided on the moving rod (11). The driving mechanism includes a screw rod (7) rotatably connected to the sleeve (8). A through hole is provided on the screw rod (7), and the steel wire rope (22) penetrates through the through hole and is fixedly connected to the moving rod (11). A moving column (6) is threadedly connected to the screw rod (7). A guide rod (15) parallel to the moving rod (11) is provided on the moving column (6), and a moving block (13) is slidably connected to the guide rod (15). The bottom of the moving block (13) is rotatably connected to the top end of the rotating hook (12).

6. The lifting device for the cable trench cover plate according to claim 5, characterized in that: A limiting platform (14) is provided at the end of the guide rod (15).

7. The lifting device for cable trench covers according to claim 5, characterized in that: The upper end of the screw rod (7) is rotatably connected to a fixed block (17). A first gear (19) is further provided at the end of the screw rod (7). A second motor (5) is fixedly connected to the fixing plate of the fixed block (17). The output end of the second motor (5) is fixedly connected to a second gear (18) meshing with the first gear (19). The fixed block (17) is fixedly connected to the moving rod (11) through a vertical rod (16).

8. The lifting device for cable trench covers according to claim 7, characterized in that: On the other side of the fixed block (17) relative to the first motor (23), there is a load-carrying frame (4). A storage battery (3) is placed on the load-carrying frame (4), and the storage battery (3) is connected to the first motor (23).

9. The lifting device for the cable trench cover plate according to claim 8, characterized in that: A counterweight is placed on the load-carrying frame (4).

10. The lifting device for the cable trench cover plate according to claim 7, characterized in that: The fixed block (17) is rotatably connected to the other side of the first gear (19) with a third gear (20) meshing with the first gear (19), and the third gear (20) and the second gear (18) are symmetrically arranged.

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