Manual adjustment type hoisting device

Abstract

The utility model relates to the field of load bearing components, in particular to a manual adjusting type hoisting device which comprises a hoisting frame, hoisting arms are movably installed on the hoisting frame in the length direction of the hoisting frame in a guiding mode, hooks used for hooking hoisted objects are arranged at the lower ends of the hoisting arms, and the hoisting arms are oppositely arranged and can be close to each other and far away from each other. A connecting rod synchronous structure is arranged between the oppositely-arranged lifting arms, so that when the lifting arm on one side is manually moved, the lifting arms on the two sides are synchronously close to or away from each other, and the manual adjusting type lifting device is stable and reliable in lifting, simple in structure, easy to manufacture, convenient to use and suitable for large-range application and popularization.

Description

Technical Field

[0001] The utility model relates to the field of load bearing components, in particular to a manually adjustable lifting device. Background Art

[0002] The box-type transformer (usually referred to as "box transformer") concentrates the design of traditional transformers in a box-type shell. The box-type transformer has many advantages such as small footprint, convenient operation, high application benefits, flexible combination methods, and high operational safety. It is widely used in various fields. The box-type shell needs to be assembled on the side wall of the box-type shell during production. The existing box-type transformer top cover assembly method is: use the workshop crane to hang the top cover fixing hole, the fixing hole is located in the center of the top cover, and the top cover is easy to deflect during lifting. When deflection occurs, at least two assemblers need to stand on the ladder and manually adjust the angle of the box-type transformer top cover to force leveling. After leveling, the box-type transformer top cover is placed in a suitable position on the upper side wall of the box-type transformer shell for assembly. Using this method to assemble the box-type transformer top cover is not only time-consuming and labor-intensive, but also due to the unstable lifting of the box-type transformer top cover, there is a risk of tipping over, which poses a safety hazard. In short, the existing box-type transformer top cover has the problem of troublesome assembly and safety hazards. There is an urgent need for a device that can stably lift the top cover and move it.

[0003] In order to solve the lifting problem, the utility model with the authorization announcement number CN209024049U discloses a flange-connected steel pipe lifting device, which includes a lifting ear, a lifting hole is arranged on the lifting ear, the lifting ear is fixedly connected to a support seat, the bottom of the support seat is slidably provided with a first lifting arm and a second lifting arm, the first lifting arm and the second lifting arm are perpendicular to the bottom wall of the support seat, and the first lifting arm and the second lifting arm are arranged oppositely, and the support seat is also provided with a driving device for driving the first lifting arm and the second lifting arm to move synchronously toward or away from each other. The spacing between the first lifting arm and the second lifting arm of the utility model is adjustable, which has the advantage of being able to adapt to the lifting work of flange steel pipes of different diameters. However, since the driving device used in the utility model includes a motor and a worm gear, the motor and the worm gear are coaxially connected, the worm gear is meshed with the worm gear, a coaxially connected connecting rod is connected below the worm gear, a sleeve is fixedly mounted on the connecting rod, and active rods are fixedly connected on both sides of the sleeve. There are two active rods, which are respectively hinged to one end of the first driven rod and the second driven rod on both sides, and the other ends of the first driven rod and the second driven rod are respectively hinged to the first lifting arm and the second lifting arm. After the motor is started, it drives the worm gear to move, the worm gear drives the worm gear to rotate, and the worm gear drives the coaxially connected connecting rod to rotate, the connecting rod rotates with the sleeve, and the active rod on the sleeve rotates accordingly, the first driven rod and the second driven rod hinged on the active rod move synchronously, driving the first lifting arm and the second lifting arm to move synchronously, resulting in a complex structure and high manufacturing cost of the utility model. Utility Model Content

[0004] The object of the present utility model is to provide a manually adjustable hoisting device to solve the problems of complex structure and high manufacturing cost of the existing hoisting devices.

[0005] The present utility model provides a manually adjustable hoisting device. The manually adjustable hoisting device includes a hanging frame, on which a lifting arm is guidingly and movably installed along its length direction. The lower end of the lifting arm has a hook for hooking the object to be lifted. The lifting arms are arranged oppositely and can approach and move away from each other. A connecting rod synchronization structure is provided between the oppositely arranged lifting arms so that when one side of the lifting arm is manually moved, the two sides of the lifting arms approach and move away synchronously.

[0006] Further, an elastic holding structure is connected between the hanging frame and at least one side of the lifting arm, and the elastic holding structure provides an elastic acting force for one side of the lifting arm to move towards the other side of the lifting arm.

[0007] Further, the elastic holding structure is a gas spring.

[0008] Further, the lifting arms on the same side are arranged in groups in the width direction of the hanging frame. The lifting arms in the same group are connected into an integral structure through a connecting beam and move synchronously.

[0009] Further, an elastic holding structure is connected between the hanging frame and the connecting beam of at least one side of the lifting arm.

[0010] Further, a guiding slider is fixedly installed on the connecting beam, and a slide rail adapted to the guiding slider is connected to the hanging frame. The connecting beam is in guiding sliding fit with the hanging frame, and the lifting arm is connected to the corresponding connecting beam.

[0011] Further, the hanging frame is a rectangular frame structure including two longitudinal beams arranged in parallel at intervals and a support cross beam connected between the two longitudinal beams. The connecting beam is in guiding sliding fit with the longitudinal beam, and the elastic holding structure and the connecting rod synchronization structure are arranged at the position between the two longitudinal beams.

[0012] Further, the slide rail is arranged on the upper side surface of the hanging frame, and the connecting beam is slidably arranged on the upper side of the slide rail.

[0013] Further, the connecting rod synchronization structure includes a synchronization crank and connecting rods hinged to both ends of the synchronization crank. The two connecting rods are respectively hinged to the connecting beams on both sides.

[0014] Further, a lifting member is connected to the middle of the hanging frame through a flexible connecting member.

[0015] The utility model provides a brand-new manually adjustable hoisting device. The manually adjustable hoisting device comprises a hanging frame, on which a hanging arm is installed in a guiding and movable manner along its length direction. The lower end of the hanging arm is provided with a hook for hooking an object to be hoisted. The hanging arms are arranged oppositely and can approach and move away from each other. A connecting rod synchronization structure is arranged between the oppositely arranged hanging arms, so that when one side of the hanging arm is manually moved, the two sides of the hanging arms can approach and move away synchronously. During use, a worker manually pulls one side of the hanging arm outwards, and the other side of the hanging arm moves outwards under the drive of the connecting rod synchronization structure. After the distance between the hooks connected to the hanging arms is greater than the width of the top cover, the height of the manually adjustable hoisting device is adjusted. After the manually adjustable hoisting device moves to a position where the hook is lower than the top cover, the hanging arms are made to move inwards until the hooks of the oppositely arranged hanging arms can hook the top cover. The utility model has low manufacturing cost, simple structure, convenient use and is convenient for large-area popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the manually adjustable hoisting device of the utility model;

[0017] Figure 2 is Figure 1 a partial enlarged view of area A in;

[0018] Figure 3 is a schematic use diagram of the manually adjustable hoisting device of the utility model;

[0019] Figure 4 is a schematic assembly and use diagram of the manually adjustable hoisting device of the utility model.

[0020] In the figure: 1, lifting ring; 2, lifting rope; 3, synchronous crank; 4, gas spring; 5, support cross beam; 6, hanging arm; 7, connecting rod; 8, gas spring fixing ring; 9, crank rotating shaft; 10, hanging plate; 11, connecting beam; 12, guiding slider; 13, connecting rod rotating shaft; 14, slide rail; 15, piston rod; 16, hanging frame; 17, hook; 18, hanging arm fixing plate; 19, top cover; 20, sleeve; 21, production line frame; 23, manually adjustable hoisting device; 24, electric hoist; 26, top cover assembly line; 27, top cover pre-assembly area. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following further describes the features and performance of the utility model in detail with reference to the embodiments.

[0022] The manually adjustable hoisting device of the utility model is mainly designed for the assembly of the top cover of a box-type substation, with the aid of Figures 1-4As shown, the manual adjustable hoisting device 23 includes a hanging frame 16. A boom 6 is installed on the hanging frame 16 in a guiding and movable manner along its length direction. The lower end of the boom 6 has a hook 17 for hooking the object to be hoisted. The object to be hoisted is a top cover 19. The booms 6 are arranged oppositely in the length direction of the hanging frame 16 and can approach and move away from each other. A connecting rod synchronization structure is provided between the oppositely arranged booms 6 so that when one side of the boom 6 is manually moved, the two sides of the boom 6 can approach and move away synchronously. During the assembly process of the top cover 19, first place the top cover 19 in the top cover pre-assembly area 27. Then, hoist the manual adjustable hoisting device 23 above the top cover 19 by an electric hoist 24 that can move on the production line frame 21. The worker manually pulls one side of the boom 6 outwards, and the other side of the boom 6 moves outwards driven by the connecting rod synchronization structure. After the distance between the hooks 17 connected to the boom 6 is greater than the width of the top cover 19, adjust the height of the manual adjustable hoisting device 23. After the manual adjustable hoisting device 23 moves to a position where the hook 17 is lower than the top cover 19, make the boom 6 move inwards until the hooks 17 of the oppositely arranged booms 6 can hook the top cover 19. After the hooking is completed, the electric hoist 24 drives the manual adjustable hoisting device 23 and the top cover 19 it hoists along the assembly line track on the top cover assembly line 26 to the top cover assembly position, and place the top cover 19 on the box-type substation body for assembly.

[0023] Based on the above main concept, different embodiments are provided below for illustration.

[0024] In Embodiment 1, with the help of Figures 1-4 As shown, in one embodiment, the booms of the manual adjustable hoisting device are arranged in pairs in the length direction of the hanging frame, and the approaching and moving away of the booms arranged in pairs are both manually controlled by the worker. In another better embodiment, to facilitate the operation of the manual adjustable hoisting device 23 and reduce the loss of human resources, an elastic holding structure is connected between the hanging frame 16 and the boom 6, and the elastic holding structure provides an elastic acting force for the boom 6 to move towards the other boom 6.

[0025] In one embodiment, the elastic retaining structure is a tension spring. One end of the tension spring is connected to the hanging bracket, and the other end is connected to the boom. After the boom is stretched, the tension spring stores elastic potential energy and provides an elastic force for the boom to move towards the other boom. In another better embodiment, to avoid damage caused by the collision between the top cover 19 and the manually adjustable hoisting device 23, the elastic retaining structure selects a gas spring 4. The gas spring 4 includes a cylinder 20 and a piston rod 15. The cylinder 20 is fixed to the hanging bracket 16 through a gas spring fixing ring 8. One end of the piston rod 15 is hermetically and guidingly connected to the cylinder 20, and the other end is connected to the boom 6. The inside of the cylinder 20 is sealed. After the boom 6 is pulled open, the internal pressure of the cylinder 20 decreases. Under the action of air pressure, the piston rod 15 moves smoothly towards the cylinder 20, driving one side of the boom 6 to move towards the direction of the other boom 6. In one embodiment, one end of the cylinder 20 is connected to the piston rod 15, and the other end is sealed. The other end of the piston rod 15 is connected to the corresponding side of the boom 6. In another embodiment, both ends of the cylinder 20 are connected to the piston rod 15, and the other ends of the piston rods 15 at both ends are respectively connected to the corresponding sides of the boom 6.

[0026] In one embodiment, the booms facing each other in the length direction of the frame are taken as a pair of booms. The manually adjustable hoisting device can be provided with one pair of booms or multiple pairs of booms. When there are multiple pairs of booms, each pair of booms is separately arranged in the length direction of the hanging bracket. During use, each pair of booms needs to be controlled separately to hook the workpiece to be lifted. In another better embodiment, for the convenience of operation, to simplify the operation process and reduce operation errors, the booms 6 on the same side are grouped in the width direction of the hanging bracket 16. Each boom 6 in the same group is connected into an integral structure through a connecting beam 11 and moves synchronously. A guiding slider 12 is fixedly installed on the connecting beam 11, and a slide rail 14 adapted to the guiding slider 12 is connected to the hanging bracket 16. The connecting beam 11 is in guiding sliding fit with the hanging bracket 16. To enhance the connection strength, a boom fixing plate 18 can also be installed between the boom 6 and the connecting beam 11.

[0027] In another embodiment, the hanging bracket and the boom can also be in sliding fit through rollers. Since similar structures are very common, they will not be elaborated here.

[0028] In one embodiment, the hanging bracket is a single-beam structure including only one longitudinal beam. The connecting beam is in sliding fit with the single beam. The elastic retaining structure and the link synchronization structure are arranged on the single beam. The slide rail is arranged on the upper side of the single beam. The connecting beam is slidably connected to the upper side of the slide rail.

[0029] In one embodiment, the hanger is a rectangular frame structure including two longitudinal beams arranged in parallel at intervals and a support cross beam 5 connected between the two longitudinal beams. The connecting beam 11 is in guiding sliding fit with the longitudinal beam. The elastic holding structure and the connecting rod synchronization structure are arranged between the two longitudinal beams. The slide rail is arranged on the lower side surface of the hanger. The connecting beam is slidably arranged on the lower side of the slide rail. The cross-sectional shape of the slide rail is dovetail-shaped, and the guiding slider fixedly connected to the connecting beam is a dovetail-shaped slider matching the shape of the chute. In another better embodiment, in order to prevent the weight of the top cover from acting completely on the mating position of the slider and the slide rail and ensure safety, the slide rail 14 is arranged on the upper side surface of the hanger 16, and the connecting beam 11 is slidably arranged on the upper side of the slide rail 14.

[0030] In one embodiment, the connecting rod synchronization structure includes a synchronization crank 3. The midpoint of the synchronization crank 3 is connected to the midpoint of the hanger 16 through a crank rotating shaft 9, enabling the synchronization crank 9 to rotate on the hanger 16. Both ends of the synchronization crank 3 are rotatably hinged to the connecting rods 7 on both sides through connecting rod rotating shafts 13, and the other ends of the connecting rods 7 on both sides are hinged to the connecting beams 11 on both sides.

[0031] Based on the above concept and embodiments, in order to enable the manually adjustable hoisting device 23 to move smoothly, a hoisting member is connected to the middle of the hanger 16 through a flexible connecting member. The flexible connecting member is a suspension rope 2, and the hoisting member is a suspension ring 1 and a suspension plate 10. The suspension plate is rectangular. The suspension rope 2 is divided into four strands and divergently connected between the suspension plate and the hanger. One end is connected to the four corners of the suspension plate 10, and the other end is connected to the hanger 16. The suspension ring 1 is fixedly connected to the midpoint of the upper side of the suspension plate 10.

[0032] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention is subject to the claims. All equivalent structural changes made by using the description and drawings of the present invention shall be included in the protection scope of the present invention by the same token.

Claims

1. A manually adjustable hoisting device, characterized in that, It includes a suspension bracket, on which a jib is installed in a guiding and movable manner along its length direction. The lower end of the jib has a hook for hooking the object to be lifted. The jibs are arranged oppositely and can approach and move away from each other. A connecting rod synchronization structure is provided between the oppositely arranged jibs, so that when one side of the jib is manually moved, the two sides of the jibs approach and move away synchronously.

2. The manually adjustable hoisting device according to claim 1, characterized in that, An elastic holding structure is connected between the suspension bracket and at least one side of the jib, and the elastic holding structure provides an elastic acting force for one side of the jib to move towards the other side of the jib.

3. The manually adjustable hoisting device according to claim 2, wherein, The elastic holding structure is a gas spring.

4. The manually adjustable hoisting device according to claim 1, characterized in that, The jibs on the same side are arranged in groups in the width direction of the suspension bracket. The jibs in the same group are connected into an integral structure through a connecting beam and move synchronously.

5. The manually adjustable hoisting device according to claim 4, wherein, An elastic holding structure is connected between the suspension bracket and the connecting beam of at least one side of the jib.

6. The manually adjustable hoisting device according to claim 4, wherein A guiding slider is fixedly installed on the connecting beam, and a slide rail adapted to the guiding slider is connected to the suspension bracket. The connecting beam is in guiding sliding fit with the suspension bracket, and the jib is connected to the corresponding connecting beam.

7. The manually adjustable hoisting device according to claim 5, characterized in that, The suspension bracket is a rectangular frame structure including two longitudinal beams arranged in parallel at intervals and a supporting cross beam connected between the two longitudinal beams. The connecting beam is in guiding sliding fit with the longitudinal beam, and the elastic holding structure and the connecting rod synchronization structure are arranged between the two longitudinal beams.

8. The manually adjustable hoisting device according to claim 6, characterized in that, The slide rail is arranged on the upper side surface of the suspension bracket, and the connecting beam is slidably arranged on the upper side of the slide rail.

9. The manually adjustable hoisting device according to claim 4, characterized in that, The connecting rod synchronization structure includes a synchronization crank and connecting rods hinged to both ends of the synchronization crank. The two connecting rods are respectively hinged to the connecting beams on both sides.

10. The manually adjustable hoisting device according to any one of claims 1-9, characterized in that, A lifting member is connected to the middle of the suspension bracket through a flexible connecting member.

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