Movable hoisting device

Abstract

The utility model relates to the technical field of hoisting devices, in particular to a movable hoisting device which comprises a working platform, two groups of tail end lifting plates are fixed at the bottom end of the working platform, a plurality of groups of lifting plates are arranged at one ends, far away from each other, of the two groups of tail end lifting plates, and the plurality of groups of lifting plates are directly provided with lifting assemblies. A base is fixed to the bottom end of the lifting plate farthest from the tail end lifting plate, a winch is arranged at the top end of the base, and pulleys are arranged at the bottom end of the base. The self-locking worm gear has the beneficial effects that the spiral angle between the worm and the worm gear is designed, so that a self-locking effect is achieved between the worm and the worm gear, that is, the worm can only drive the worm gear to rotate but cannot drive the worm to rotate, and after the worm gear is fixed to a working platform and is lifted, the worm gear can rotate under the self-locking effect between the worm and the worm gear. Therefore, the transmission shaft on the surface of the winch does not rotate reversely, the height of the working platform cannot be reduced, and safety guarantee is provided for workers who stand on the working platform to conduct construction.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting devices, in particular to a movable hoisting device. Background Art

[0002] When laying cables indoors in a building, the cables often have to be installed at high places, so college entrance examination homework is required.

[0003] In the prior art, high-altitude construction is usually carried out by erecting a frame or using a scissor lift, which can lift personnel and equipment to a height to facilitate high-altitude construction.

[0004] However, the lifting devices in the prior art usually do not have a self-locking capability and are relatively poor in safety. Utility Model Content

[0005] The purpose of the utility model is to provide a movable lifting device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a movable lifting device, comprising: a working platform, two groups of end lifting plates are fixed at the bottom end of the working platform, a plurality of lifting plates are arranged at one end away from each other of the two groups of end lifting plates, a lifting assembly is arranged between the plurality of lifting plates, a base is fixed at the bottom end of the group of lifting plates farthest from the end lifting plates, a winch is arranged at the top end of the base, and a pulley is arranged at the bottom end of the base.

[0007] Preferably, the lifting assembly includes: a lifting assembly cabin, the lifting assembly cabin is opened on one end surface of the lifting plate, a worm hole is opened on the side of the lifting plate, the worm hole is connected to the lifting assembly cabin, a worm is rotatably connected in the worm hole, a turbine is rotatably connected in the lifting assembly cabin, the worm cooperates with the turbine, a driving gear is fixed on the surface of the turbine, a passive gear and a steering gear are rotatably connected in the lifting assembly cabin, two groups of passive gears are provided, both groups of passive gears are meshed with the driving gear, a rack is movably inserted in the lifting assembly cabin, two groups of racks are provided, one group of racks is meshed with one group of passive gears, the other group of racks is meshed with the steering gear, and the steering gear is meshed with the other group of passive gears.

[0008] Preferably, the racks are provided in several groups, two of which are fixed on the surface of the end lifting plate, and the remaining groups of racks are fixed on the surface of the lifting plate.

[0009] Preferably, a sprocket is arranged on the surface of the worm.

[0010] Preferably, a transmission shaft is arranged on the surface of the winch, and a sprocket is arranged on the surface of the transmission shaft.

[0011] Preferably, the worm gears are arranged in several groups, the worm gear farthest from the winch is longer than the other groups of worm gears, and the same group of chains are connected between the sprockets arranged on the surface of the worm gears and the sprockets arranged on the surface of the transmission shaft.

[0012] Preferably, a limiting groove is provided on the surface of the rack.

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

[0014] The movable lifting device proposed by the utility model designs the helix angle between the worm and the turbine so that the worm and the turbine have a self-locking effect, that is, the turbine can only be driven to rotate by the worm but not by the turbine. After the working platform is lifted up, due to the self-locking effect between the worm and the turbine, the transmission shaft on the surface of the winch is not reversed, and the height of the working platform will not drop, thereby providing safety protection for workers standing on the working platform to carry out construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the back structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the lifting component structure;

[0018] Figure 4 It is a schematic diagram of the rack and lifting plate structure;

[0019] Figure 5 This is a schematic diagram of the working platform structure;

[0020] Figure 6 It is a schematic diagram of the cross-sectional structure of the lifting plate;

[0021] Figure 7 for Figure 6 A schematic diagram of the enlarged structure in the middle.

[0022] In the figure: working platform 1, lifting plate 2, end lifting plate 3, base 4, winch 5, transmission shaft 6, worm 7, worm hole 8, sprocket 9, chain 10, lifting component cabin 11, turbine 12, driving gear 13, driven gear 14, rack 15, steering gear 16, limit groove 17, limit rod mounting hole 18, Bluetooth communication module of automatic power supply 19, electromagnet 20, spring 21, limit rod 22. DETAILED DESCRIPTION

[0023] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1

[0025] See also Figures 1 to 6 The utility model provides a technical solution: a movable lifting device, comprising: a working platform 1, two groups of terminal lifting plates 3 are fixed at the bottom end of the working platform 1, a plurality of lifting plates 2 are arranged at one end away from each other of the two groups of terminal lifting plates 3, a lifting assembly is directly arranged at the plurality of lifting plates 2, a base 4 is fixed at the bottom end of the group of lifting plates 2 farthest from the terminal lifting plates 3, a winch 5 is arranged at the top of the base 4, a pulley is arranged at the bottom end of the base 4, and the lifting assembly comprises: a lifting assembly cabin 11, the lifting assembly cabin 11 is opened on the surface of one end of the lifting plate 2, a worm hole 8 is opened on the side of the lifting plate 2, the worm hole 8 is connected with the lifting assembly cabin 11, a worm 7 is rotatably connected in the worm hole 8, a turbine 12 is rotatably connected in the lifting assembly cabin 11, the worm 7 cooperates with the turbine 12, a driving gear 13 is fixed on the surface of the turbine 12, and a passive gear 14 is rotatably connected in the lifting assembly cabin 11 and a steering gear 16, two groups of passive gears 14 are provided, and both groups of passive gears 14 are meshed with the active gear 13, a rack 15 is movably inserted in the lifting component cabin 11, and two groups of racks 15 are provided, one group of racks 15 is meshed with one group of passive gears 14, and the other group of racks 15 is meshed with the steering gear 16, and the steering gear 16 is meshed with the other group of passive gears 14, and several groups of racks 15 are provided, two groups of racks 15 are fixed on the surface of the end lifting plate 3, and the remaining groups of racks 15 are fixed on the surface of the lifting plate 2, a sprocket 9 is provided on the surface of the worm 7, a transmission shaft 6 is provided on the surface of the winch 5, and a sprocket 9 is provided on the surface of the transmission shaft 6, and several groups of worm 7 are provided, and the length of the worm 7 farthest from the winch 5 is greater than that of the remaining groups of worm 7, and the sprocket 9 provided on the surface of the group of worm 7 and the sprocket 9 provided on the surface of the transmission shaft 6 are connected with the same group of chains 10.

[0026] In actual use, after the winch 5 is turned on, the transmission shaft 6 rotates and drives the two groups of worm gears 7 farthest from the winch 5 to rotate through the sprocket 9 and the chain 10. The worm gear 7 rotates in the worm hole 8, driving the turbine 12 to rotate in the lifting component cabin 11, and the driving gear 13 rotates with the turbine 12. The rotation of the driving gear 13 causes the two groups of passive gears 14 and the steering gear 16 to rotate together under the meshing action. The addition of the steering gear 16 causes the two groups of racks 15 to move upward together under the meshing action. The movement of the rack 15 causes the lifting plate 2, which is the second farthest from the winch 5, to move upward. At the same time, each group of worm gears 7 is connected through the sprocket 9 and the chain 10, so that each group of worm gears 7 rotates together. Under the rotation of the worm gear 7, through the same movement as the above movement, each group of lifting plates 2 also moves upward, the chain 10 has a strong elasticity, so the chain 10 will not be broken during the rising process of the lifting plate 2. With the upward movement of each group of lifting plates 2, the end lifting plate 3 is also lifted upward. The lifting of the end lifting plate 3 causes the working platform 1 to be lifted as well. By designing the helical angle between the worm 7 and the turbine 12, a self-locking effect is achieved between the worm 7 and the turbine 12, that is, the turbine 12 can only be driven to rotate by the worm 7 but not by the turbine 12. After the working platform 1 is lifted, under the self-locking effect between the worm 7 and the turbine 12, the transmission shaft 6 on the surface of the winch 5 is not reversed, and the height of the working platform 1 will not drop, thereby providing safety protection for the workers standing on the working platform 1 for construction.

[0027] Embodiment 2

[0028] On the basis of embodiment one, in order to further enhance safety, a limiting groove 17 is opened on the surface of the rack 15, and a limiting rod mounting hole 18 is opened on the surface of the lifting plate 2. A Bluetooth communication module 19 of an automatic power supply and an electromagnet 20 are fixed in the limiting rod mounting hole 18. A limiting rod 22 is slidably connected in the limiting rod mounting hole 18, and one end of the limiting rod 22 is movably inserted in the limiting rod mounting hole 18. A spring 21 is fixed to one end of the limiting rod 22 extending into the limiting rod mounting hole 18, and the other end of the spring 21 is fixed on the surface of the electromagnet 20, and the other end of the limiting rod 22 is movably inserted in the limiting groove 17.

[0029] In the initial state, the spring 21 is in a compressed state. When the rack 15 moves to the highest point, the limit rod mounting hole 18 is just aligned with the limit slot 17. Under the elastic action of the spring 21, the spring 21 pushes one end of the limit rod 22 into the limit slot 17, and the other end of the limit rod 22 stays in the limit rod mounting hole 18, thereby limiting the rack 15. By arranging a limit rod 22 between each group of lifting plates 2 and the rack 15, each group of racks 15 is limited after moving to the highest point, thereby further enhancing the safety of the working platform 1 at high places.

[0030] Embodiment 3

[0031] On the basis of Example 2, in order to release the limit of the rack 15, a limit groove 17 is opened on the surface of the rack 15, and a limit rod mounting hole 18 is opened on the surface of the lifting plate 2. A Bluetooth communication module 19 of an automatic power supply and an electromagnet 20 are fixed in the limit rod mounting hole 18. A limit rod 22 is slidably connected in the limit rod mounting hole 18, and one end of the limit rod 22 is movably inserted in the limit rod mounting hole 18. A spring 21 is fixed to one end of the limit rod 22 extending into the limit rod mounting hole 18, and the other end of the spring 21 is fixed on the surface of the electromagnet 20, and the other end of the limit rod 22 is movably inserted in the limit groove 17.

[0032] When the height of the working platform 1 is to be lowered, the Bluetooth communication module 19 of the automatic power supply is remotely controlled by the Bluetooth remote controller, so that the Bluetooth communication module 19 of the automatic power supply supplies power to the electromagnet 20. After the electromagnet 20 is energized, suction is generated on the limit rod 22 made of metal, so that the limit rod 22 withdraws from the limit groove 17, and the limit on the rack 15 can be released. Then the transmission shaft 6 on the surface of the winch 5 is reversed, so that each group of worm gears 7 is reversed, and the height of each group of lifting plates 2 can be reduced.

[0033] Embodiment 4

[0034] On the basis of the third embodiment, in order to facilitate the movement of the movable lifting device, a pulley is provided at the bottom end of the base 4.

[0035] A pulley is provided at the bottom end of the base 4 to facilitate the movement of the movable lifting device.

[0036] In actual use, after the winch 5 is turned on, the transmission shaft 6 rotates and drives the two groups of worm gears 7 farthest from the winch 5 to rotate through the sprocket 9 and the chain 10. The worm gear 7 rotates in the worm hole 8, driving the turbine 12 to rotate in the lifting component cabin 11. The driving gear 13 rotates with the turbine 12. The rotation of the driving gear 13 causes the two groups of passive gears 14 and the steering gear 16 to rotate together under the meshing action. The addition of the steering gear 16 causes the two groups of racks 15 to move upward together under the meshing action. The movement of the rack 15 causes the lifting plate 2, which is the second farthest from the winch 5, to move upward. At the same time, each group of worm gears 7 is connected through the sprocket 9 and the chain 10, so that each group of worm gears 7 The worm 7 rotates together with the gear 12, and the worm 7 rotates together with the gear 12, and the worm 7 rotates together with the worm 7, and the worm 7 rotates together with the worm 7, and the worm 7 rotates together with the worm 7, and the worm 7 rotates together with the worm 7, and the worm 7 rotates together with the worm 7, and the worm 7 rotates together with the worm 7, and the worm 7 rotates together with the worm 7, and the worm 12 rotates together with the worm 7, and the worm 12 rotates together with the worm 7, and the worm 12 rotates together with the worm 7, and the worm 12 rotates together with the worm 7, and the worm 7 ... Under the self-locking effect, the height of the working platform 1 will not drop unless the transmission shaft 6 on the surface of the winch 5 is reversed, thereby providing safety protection for the workers standing on the working platform 1 to carry out construction; in the initial state, the spring 21 is in a compressed state, and when the rack 15 moves to the highest point, the limiting rod mounting hole 18 is just aligned with the limiting groove 17, then under the elastic action of the spring 21, the spring 21 pushes one end of the limiting rod 22 into the limiting groove 17, and the other end of the limiting rod 22 stays in the limiting rod mounting hole 18, thereby limiting the rack 15, and by arranging the limiting rod 22 between each group of lifting plates 2 and the rack 15, each group of racks 15 can be moved After moving to the highest point, it is limited, thereby further enhancing the safety of the working platform 1 at high places; when the height of the working platform 1 needs to be lowered, the Bluetooth communication module 19 of the automatic power supply is remotely controlled by the Bluetooth remote controller, so that the Bluetooth communication module 19 of the automatic power supply supplies power to the electromagnet 20. After the electromagnet 20 is energized, it generates suction on the limit rod 22 made of metal, so that the limit rod 22 withdraws from the limit groove 17, and the limit on the rack 15 can be released. Then the transmission shaft 6 on the surface of the winch 5 is reversed, so that each group of worm gears 7 is reversed, and the height of each group of lifting plates 2 can be reduced. A pulley is set at the bottom end of the base 4 to facilitate the movement of the movable lifting device.

[0037] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A movable lifting device, comprising: The working platform (1) is characterized in that: two groups of end lifting plates (3) are fixed at the bottom end of the working platform (1), a plurality of lifting plates (2) are arranged at the ends of the two groups of end lifting plates (3) away from each other, a lifting assembly is arranged between the plurality of lifting plates (2), a base (4) is fixed at the bottom end of the group of lifting plates (2) farthest from the end lifting plates (3), a winch (5) is arranged at the top end of the base (4), and a pulley is arranged at the bottom end of the base (4); The lifting assembly comprises: a lifting assembly cabin (11), the lifting assembly cabin (11) is arranged on one end surface of the lifting plate (2), a worm hole (8) is arranged on the side of the lifting plate (2), the worm hole (8) and the lifting assembly cabin (11) are connected, a worm (7) is rotatably connected in the worm hole (8), a turbine (12) is rotatably connected in the lifting assembly cabin (11), the worm (7) and the turbine (12) are matched, a driving gear (13) is fixed on the surface of the turbine (12), and the lifting assembly cabin (11) is provided with a plurality of gears. 1) is rotatably connected with a passive gear (14) and a steering gear (16), two groups of passive gears (14) are provided, and both groups of passive gears (14) are meshed with the driving gear (13), and a rack (15) is movably inserted in the lifting component cabin (11), and two groups of racks (15) are provided, one group of racks (15) is meshed with one group of passive gears (14), and the other group of racks (15) is meshed with the steering gear (16), and the steering gear (16) is meshed with the other group of passive gears (14).

2. A movable lifting device according to claim 1, characterized in that: The racks (15) are provided in a plurality of groups, two of which are fixed on the surface of the end lifting plate (3), and the remaining groups of racks (15) are fixed on the surface of the lifting plate (2).

3. A movable lifting device according to claim 2, characterized in that: A sprocket (9) is arranged on the surface of the worm (7).

4. A movable lifting device according to claim 3, characterized in that: A transmission shaft (6) is arranged on the surface of the hoist (5), and a sprocket (9) is arranged on the surface of the transmission shaft (6).

5. A movable lifting device according to claim 4, characterized in that: The worm gears (7) are provided in a plurality of groups, the worm gears (7) farthest from the winch (5) are longer than the other groups of worm gears (7), and the sprockets (9) provided on the surface of the worm gears (7) of this group and the sprockets (9) provided on the surface of the transmission shaft (6) are connected by the same group of chains (10).

6. The movable lifting device according to claim 1, characterized in that: A limiting groove (17) is provided on the surface of the rack (15).

7. The movable lifting device according to claim 6, characterized in that: A limit rod mounting hole (18) is provided on the surface of the lifting plate (2), a Bluetooth communication module (19) of an automatic power supply and an electromagnet (20) are fixed in the limit rod mounting hole (18), a limit rod (22) is slidably connected in the limit rod mounting hole (18), one end of the limit rod (22) is movably inserted in the limit rod mounting hole (18), one end of the limit rod (22) extending into the limit rod mounting hole (18) is fixed with a spring (21), the other end of the spring (21) is fixed on the surface of the electromagnet (20), and the other end of the limit rod (22) is movably inserted in the limit groove (17).

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