Lifting device

Abstract

The utility model discloses a lifting device, which relates to the technical field of lifting devices and comprises a lifting bottom plate, universal wheels are rotatably mounted at four corners of the lower surface of the lifting bottom plate, a support plate is fixedly connected to the upper surface of the lifting bottom plate, and a support plate groove is formed in the left side surface of the support plate. According to the lifting device, before a worker lifts a lifting material, the limiting rod is rotated into the hook limiting groove, then the threaded rod is inserted into the C-shaped hook and the limiting rod, and the threaded rod is fixed through the nut, so that the C-shaped hook is in a closed state, and the lifting material is lifted through the supporting plate built-in groove. According to the lifting device, the situation that when the lifting device lifts a lifting material, the lifting material shakes greatly due to external factors such as strong wind weather and the like is avoided, and the situation that the lifting material is likely to fall off from the hook due to the fact that the opening of the hook is not closed is avoided, and the safety of the lifting device during material lifting is greatly improved.

Description

Technical Field

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

[0002] A lifting device refers to mechanical equipment used to lift, transport and install heavy objects or equipment. In road, airport and bridge and tunnel projects, lifting devices are widely used to lift, transport and install various heavy components and equipment. Lifting devices play a key role in road, airport and bridge and tunnel projects, and can improve the efficiency and safety of project construction.

[0003] However, most of the lifting devices currently used have their hooks and openings closed by components such as baffles driven by springs or rotating shafts. However, after being used for a long time, the elastic force of springs and other components will be relatively weakened, and sometimes even the springs will break. For components that close the hooks with rotating shafts, the rotating shafts may rust after being used for a long time, resulting in insensitive rotation of the rotating shafts. When the lifting hook shakes, the hook cannot form a closed loop in the first time, which results in the object being separated from the hook and falling when the hook is lifting an object, greatly reducing the safety of the lifting device when lifting materials. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a lifting device that can solve the problem that the elastic force of springs and other components will be relatively weakened after being used for a long time, and sometimes even the spring will break. The rotating shaft of the component that closes the hook through the rotating shaft may rust after being used for a long time, resulting in insensitive rotation of the rotating shaft. When the lifting hook shakes, the hook cannot form a closed loop in the first time, which leads to the situation that the object is likely to separate from the hook and fall when the hook is lifting an object, which greatly reduces the safety of the lifting device when lifting the lifting material.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lifting device, comprising a lifting base plate, universal wheels are rotatably installed at the four corners of the lower surface of the lifting base plate, a support plate is fixedly connected to the upper surface of the lifting base plate, a support plate groove is provided on the left surface of the support plate, a support plate built-in groove is provided inside the top of the lifting base plate, and a height adjustment device is provided on the inner wall of the support plate built-in groove;

[0008] The front and rear sides of the top of the right side surface of the support plate are fixedly connected to the fixed plate, and a limiting column is fixedly connected between the two fixed plates. The outer surface of the limiting column is provided with a first limiting groove, and the inner wall of the support plate groove is provided with a limiting plate, and the outer surface of the limiting plate is also provided with a first limiting groove;

[0009] The inner walls of the two first limit grooves are slidably connected with a lifting rope, the right end of the upper surface of the lifting bottom plate is fixedly connected with a second limit groove, the interior of the second limit groove is hollow and a driving device is fixedly installed inside the second limit groove;

[0010] Among them, one end of the lifting rope close to the limiting column slides into the interior of the second limiting groove and is fixedly connected to the driving device, and the other end of the lifting rope away from the limiting column is fixedly connected to a fixing ball, and a fixing device is provided on the outer surface of the fixing ball.

[0011] Preferably, the height adjustment device comprises a motor, the motor is fixedly mounted on the bottom wall of the built-in groove of the support plate, and the output end of the motor is fixedly connected to a transmission shaft;

[0012] Wherein, a worm is fixedly sleeved on the outer surface of the transmission shaft, and a worm wheel is meshingly connected to the outer surface of the worm.

[0013] Preferably, the left side surface of the worm wheel is fixedly connected with a connecting shaft, which rotates through the front inner wall of the support plate groove and is rotationally connected to the rear inner wall of the support plate groove, and the end of the limit plate close to the support plate is fixedly sleeved on the outer surface of the connecting shaft.

[0014] Preferably, the fixing device comprises a C-shaped hook, which is fixedly mounted on the bottom end of the fixing ball, and a hook sliding groove is provided on the right inner wall of the opening of the C-shaped hook;

[0015] A hook through groove is provided at one end of the outer surface of the C-shaped hook close to the fixed ball, and a hook limiting groove is provided on the bottom wall of the opening of the C-shaped hook.

[0016] Preferably, a rotating shaft is fixedly mounted on the inner wall of the hook slide slot, and a limiting rod is rotatably sleeved on the outer surface of the rotating shaft;

[0017] A through hole is provided on the front surface of one end of the limiting rod away from the rotating shaft, and a transmission block is provided on the front surface of the C-shaped hook.

[0018] Preferably, a threaded rod is fixedly connected to the rear surface of the transmission block, the threaded rod slides through the front surface of the C-shaped hook and rotates through the through hole to pass through the rear surface of the C-shaped hook, and a nut is threadedly sleeved on the outer surface of one end of the threaded rod located on the rear surface of the C-shaped hook.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. For the lifting device, before the staff lifts the lifting materials, they first rotate the limit rod into the hook slot, tie the lifting materials with the C-type hook, rotate the limit rod into the hook limit slot, insert the threaded rod into the C-type hook and the limit rod, and fix it with a nut, so that the C-type hook reaches a closed state, so as to avoid that when the lifting device is lifting the lifting materials, the elastic force of the spring and other components will be relatively weakened after being used for a long time, and sometimes even the spring will break. After a long time of use, the shaft of the component that closes the hook with a rotating shaft may rust, etc., resulting in insensitive rotation of the rotating shaft. When the lifting hook shakes, the hook cannot form a closed loop in the first time, which results in that when the hook is lifting an object, the object is likely to separate from the hook and fall off, which greatly reduces the safety of the lifting device when lifting the lifting materials.

[0022] 2. When the staff needs to adjust the height of the lifting device, the motor is started, and the output end of the motor synchronously drives the transmission shaft to rotate, the transmission shaft synchronously drives the worm to rotate, the worm synchronously drives the worm wheel to rotate, the worm wheel synchronously drives the connecting shaft to rotate, and the connecting shaft synchronously drives the limit plate to rotate with the connecting shaft as the center, so that the end of the limit plate away from the connecting shaft is raised or lowered, and then the lifting height is adjusted. The device can be adjusted according to the different lifting heights of the staff, which greatly increases the applicability of the lifting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0024] Figure 1 This is a structural schematic diagram of a lifting device of the utility model;

[0025] Figure 2 This is a schematic diagram of the internal structure of the built-in groove of the support plate of the utility model;

[0026] Figure 3 This is a schematic diagram of the C-type hook structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the transmission block structure of the utility model.

[0028] Figure numerals: 1. lifting base plate; 2. universal wheel; 3. support plate; 4. support plate groove; 5. support plate built-in groove; 6. fixed plate; 7. limit column; 8. first limit groove; 9. limit plate; 10. second limit groove; 11. lifting rope; 12. motor; 13. transmission shaft; 14. worm; 15. worm wheel; 16. connecting shaft; 17. fixed ball; 18. C-type hook; 19. hook slide groove; 20. hook through groove; 21. hook limit groove; 22. limit rod; 23. transmission block; 24. threaded rod; 25. nut. DETAILED DESCRIPTION

[0029] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0030] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] See also Figure 1-4The utility model provides a technical solution: a lifting device, including a lifting base plate 1, universal wheels 2 are rotatably installed at the four corners of the lower surface of the lifting base plate 1, a support plate 3 is fixedly connected to the upper surface of the lifting base plate 1, a support plate groove 4 is opened on the left surface of the support plate 3, a support plate built-in groove 5 is opened inside the top of the lifting base plate 1, and a height adjustment device is arranged on the inner wall of the support plate built-in groove 5, a fixing plate 6 is fixedly connected to the front and rear sides of the top of the right side surface of the support plate 3, a limiting column 7 is fixedly connected between the two fixing plates 6, a first limiting groove 8 is opened on the outer surface of the limiting column 7, and the support plate groove 4 is provided. A limiting plate 9 is provided on the inner wall, and a first limiting groove 8 is also provided on the outer surface of the limiting plate 9. A lifting rope 11 is slidably connected to the inner walls of the two first limiting grooves 8. A second limiting groove 10 is fixedly connected to the right end of the upper surface of the lifting base plate 1. The interior of the second limiting groove 10 is hollow and a driving device is fixedly installed inside the second limiting groove 10. The end of the lifting rope 11 close to the limiting column 7 slides into the interior of the second limiting groove 10 and is fixedly connected to the driving device. The end of the lifting rope 11 away from the limiting column 7 is fixedly connected to a fixing ball 17, and a fixing device is provided on the outer surface of the fixing ball 17.

[0034] Furthermore, the height adjustment device includes a motor 12, which is fixedly mounted on the bottom wall of the built-in groove 5 of the support plate. The output end of the motor 12 is fixedly connected to a transmission shaft 13, and a worm 14 is fixedly sleeved on the outer surface of the transmission shaft 13. The outer surface of the worm 14 is meshingly connected to a worm wheel 15.

[0035] Furthermore, a connecting shaft 16 is fixedly connected to the left side surface of the worm gear 15, and the rotation of the connecting shaft 16 passes through the front inner wall of the support plate groove 4 and is rotatably connected to the rear inner wall of the support plate groove 4. The end of the limit plate 9 close to the support plate 3 is fixedly sleeved on the outer surface of the connecting shaft 16. The driving device is a known existing device, and its patent number is CN214879693U, which will not be described in detail here. When the staff needs to adjust the height, the motor 12 is started, and the output end of the motor 12 synchronously drives the transmission shaft 13 to rotate, and the transmission shaft 13 synchronously drives the worm 14 to rotate, and the worm 14 synchronously drives the worm wheel 15 to rotate, and the worm wheel 15 synchronously drives the connecting shaft 16 to rotate, and the connecting shaft 16 synchronously drives the limiting plate 9 to rotate with the connecting shaft 16 as the center of the circle, so that the end of the limiting plate 9 away from the connecting shaft 16 is raised or lowered, and then the lifting height is adjusted. The device can be adjusted according to the different lifting heights set by the staff, which greatly increases the applicability of the lifting device.

[0036] Furthermore, the fixing device includes a C-shaped hook 18, which is fixedly installed at the bottom end of the fixing ball 17. A hook slide groove 19 is provided on the right inner wall of the opening of the C-shaped hook 18, a hook through groove 20 is provided on the outer surface of the C-shaped hook 18 near the end of the fixing ball 17, and a hook limiting groove 21 is provided on the bottom wall of the opening of the C-shaped hook 18.

[0037] Furthermore, a rotating shaft is fixedly installed on the inner wall of the hook slide 19, and a limit rod 22 is rotatably sleeved on the outer surface of the rotating shaft. A through hole is opened on the front side surface of the limit rod 22 away from the rotating shaft, and a transmission block 23 is arranged on the front side surface of the C-shaped hook 18.

[0038] Furthermore, a threaded rod 24 is fixedly connected to the rear surface of the transmission block 23. The threaded rod 24 slides through the front surface of the C-shaped hook 18 and rotates through the through hole to penetrate the rear surface of the C-shaped hook 18. A nut 25 is threadedly sleeved on the outer surface of one end of the threaded rod 24 located on the rear surface of the C-shaped hook 18. Before the staff lifts the lifting material, they first rotate the limit rod 22 into the hook groove 20, and then tie the lifting material to the C-shaped hook 18, and then rotate the limit rod 22 into the hook limit groove 21, and then insert the threaded rod 24 into the C-shaped hook 18 and the limit rod 22, and fix it by the nut 25. The C-shaped hook 18 is fixed, so that the C-shaped hook 18 reaches a closed state, so as to avoid the situation that the elastic force of the spring and other components will be relatively weakened after being used for a long time when the lifting device is lifting the lifting material, and sometimes the spring will even break. The component that closes the hook with a rotating shaft may rust the rotating shaft after being used for a long time, resulting in insensitive rotation of the rotating shaft. When the lifting hook shakes, the hook cannot form a closed loop in the first time, which results in the object being separated from the hook and falling when the hook is lifting the lifting material, greatly reducing the safety of the lifting device when lifting the lifting material.

[0039] Working principle: when the staff needs to adjust the height, the motor 12 is started, the output end of the motor 12 synchronously drives the transmission shaft 13 to rotate, the transmission shaft 13 synchronously drives the worm 14 to rotate, the worm 14 synchronously drives the worm wheel 15 to rotate, the worm wheel 15 synchronously drives the connecting shaft 16 to rotate, and the connecting shaft 16 synchronously drives the limit plate 9 to rotate with the connecting shaft 16 as the center, so that the end of the limit plate 9 away from the connecting shaft 16 is raised or lowered, and then the lifting height is adjusted. The device can be adjusted according to the different lifting heights required by the staff, which greatly increases the applicability of the lifting device. Before the staff lifts the lifting material, they first rotate the limit rod 22 into the hook slot 20, and then tie the lifting material to the C-shaped hook 18, and then rotate the limit rod 22 is rotated into the hook limiting groove 21, and the threaded rod 24 is inserted into the C-type hook 18 and the limiting rod 22, and fixed by the nut 25, so that the C-type hook 18 is in a closed state, so as to avoid that when the lifting device is lifting materials, the elastic force of the spring and other components will be relatively weakened after being used for a long time, and sometimes even the spring will break. The component that closes the hook with a rotating shaft may rust after being used for a long time, resulting in insensitive rotation of the rotating shaft. When the lifting hook shakes, the hook cannot form a closed loop in the first time, which results in the object being separated from the hook and falling when the hook is lifting an object, greatly reducing the safety of the lifting device when lifting materials.

[0040] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A lifting device, comprising a lifting base plate (1), Features: Universal wheels (2) are rotatably mounted at the four corners of the lower surface of the lifting base plate (1); a support plate (3) is fixedly connected to the upper surface of the lifting base plate (1); a support plate groove (4) is provided on the left surface of the support plate (3); a support plate built-in groove (5) is provided inside the top of the lifting base plate (1); and a height adjustment device is provided on the inner wall of the support plate built-in groove (5); The front and rear sides of the top of the right side surface of the support plate (3) are fixedly connected to the fixing plate (6), a limiting column (7) is fixedly connected between the two fixing plates (6), the outer surface of the limiting column (7) is provided with a first limiting groove (8), the inner wall of the support plate groove (4) is provided with a limiting plate (9), and the outer surface of the limiting plate (9) is also provided with a first limiting groove (8); The inner walls of the two first limiting grooves (8) are both slidably connected with a lifting rope (11), the right end of the upper surface of the lifting base plate (1) is fixedly connected with a second limiting groove (10), the interior of the second limiting groove (10) is hollow and a driving device is fixedly installed inside the second limiting groove (10); The end of the lifting rope (11) close to the limiting column (7) slides into the interior of the second limiting groove (10) and is fixedly connected to the driving device, and the end of the lifting rope (11) away from the limiting column (7) is fixedly connected to a fixing ball (17), and a fixing device is provided on the outer surface of the fixing ball (17).

2. A lifting device according to claim 1, Features: The height adjustment device comprises a motor (12), the motor (12) being fixedly mounted on the bottom wall of the built-in groove (5) of the support plate, and the output end of the motor (12) being fixedly connected to a transmission shaft (13); A worm (14) is fixedly sleeved on the outer surface of the transmission shaft (13), and a worm wheel (15) is meshingly connected to the outer surface of the worm (14).

3. A lifting device according to claim 2, Features: The left side surface of the worm wheel (15) is fixedly connected to a connecting shaft (16), which rotates through the front inner wall of the support plate groove (4) and is rotatably connected to the rear inner wall of the support plate groove (4), and one end of the limit plate (9) close to the support plate (3) is fixedly sleeved on the outer surface of the connecting shaft (16).

4. A lifting device according to claim 1, Features: The fixing device comprises a C-shaped hook (18), the C-shaped hook (18) is fixedly mounted on the bottom end of the fixing ball (17), and a hook sliding groove (19) is provided on the right inner wall of the opening of the C-shaped hook (18); A hook through groove (20) is provided on one end of the outer surface of the C-shaped hook (18) close to the fixed ball (17), and a hook limiting groove (21) is provided on the bottom wall of the opening of the C-shaped hook (18).

5. A lifting device according to claim 4, Features: A rotating shaft is fixedly mounted on the inner wall of the hook slide groove (19), and a limiting rod (22) is rotatably sleeved on the outer surface of the rotating shaft; A through hole is provided on the front surface of one end of the limiting rod (22) away from the rotating shaft, and a transmission block (23) is provided on the front surface of the C-shaped hook (18).

6. A lifting device according to claim 5, Features: The rear surface of the transmission block (23) is fixedly connected with a threaded rod (24), the threaded rod (24) slides through the front surface of the C-shaped hook (18) and rotates through the through hole to pass through the rear surface of the C-shaped hook (18), and a nut (25) is threadedly sleeved on the outer surface of one end of the threaded rod (24) located on the rear surface of the C-shaped hook (18).

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