Four-point synchronous lifting equipment and working method thereof

Abstract

The invention relates to four-point synchronous lifting equipment and a working method thereof. The device comprises a main body device, a platform device, a lifting support device and a lifting control device, the main body device comprises a base, a main supporting piece and a main bracket; the platform device comprises a platform, a platform support and a platform supporting piece. The lifting supporting device comprises a motor, a speed reducer and a lifting hook and is used for supporting and fixing a lifted component. The lifting control device comprises a lifting cylinder, a chain, a chain wheel and a guide rail and is used for controlling lifting of the platform. The four-point synchronous elevator is used for mounting and dismounting a component which is composed of multiple components and needs to be lifted and mounted, and the lifted component is fixed through a motor, a speed reducer and a lifting hook. Compared with the prior art, the four-point synchronous lifting device has the advantages that four-point synchronous lifting is achieved, efficiency is improved, the flexibility degree is high, installation is accurate, and disassembly and assembly are easy.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting equipment, and in particular to a four-point synchronous lifting equipment and a working method thereof. Background Art

[0002] Four-point synchronous lifting equipment has been widely used in various construction fields, especially in the construction of large components such as bridges and trusses. It is mainly composed of a base, lifting equipment and a lifting platform. At present, in order to achieve the lifting of large components, each lifting point in the equipment is required to ensure the synchronization of the lifting speed and position, and to be able to adapt to the lifting requirements of components or objects of different types and sizes.

[0003] The existing four-point synchronous lifting device has the following main problems: first, the load that the equipment can withstand is relatively low, which cannot meet the needs of lifting large components and high loads during actual construction; second, the equipment is not flexible, not easy to disassemble and transport, and cannot adapt to the lifting requirements of different mechanisms in different construction scenarios; its lifting process is also too cumbersome, and the time for clamping and unloading components is relatively long, resulting in low construction efficiency.

[0004] For example, the invention patent CN101712444B discloses a method for hoisting large workpieces in an ordinary factory building and its hydraulic jacking equipment, in which the hydraulic lifting device of the hydraulic jacking system is installed above the hydraulic jacking tower through a lifting beam; after the equipment is lifted to the platform height by the hydraulic lifting device, it is sent above the foundation, and the jacking tower is lowered to put the equipment in place; the hook used in the combined lifting beam is connected to the hook beam through a two-way pin shaft, and can rotate itself to realize the rotation operation of the stator; but its lifting efficiency is low, and it is also impossible to effectively realize four-point synchronous lifting. Summary of the invention

[0005] The purpose of the present invention is to provide a four-point synchronous lifting device and a working method thereof in order to overcome the defects of the above-mentioned prior art.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] According to one aspect of the present invention, there is provided a four-point synchronous lifting device, comprising a main body device, a platform device, a lifting support device and a lifting control device; wherein the lifting control device is installed on the main body device, the platform device is connected to the lifting control device, the lifting support device is installed at the four corners of the platform device, the main body device comprises a base 1, a main support member 9 and a main bracket 10; the platform device comprises a platform 8, a platform bracket 5 and a platform support member 6; the lifting support device comprises a motor 7, a reducer 11 and a lifting hook 12, which are used to support and fix the lifted component; the lifting control device comprises a lifting cylinder 2, a chain 3, a sprocket 4 and a guide rail 13, which are used to control the lifting of the platform 8.

[0008] As a preferred technical solution, the main device and the platform device are both triangular structures; in the main device, the base 1, the main support member 9 and the main bracket 10 are hinged in pairs, and the main bracket 10 is fixedly connected to the base 1; in the platform device, the platform 8, the platform bracket 5 and the platform support member 6 are hinged in pairs.

[0009] As a preferred technical solution, the sprocket 4 in the lifting control device is fixedly connected to the piston rod of the lifting cylinder 2, and one end of the chain 3 is connected to the base 1, and after being guided around the sprocket 4, the other end is fixedly connected to the platform 8.

[0010] As a preferred technical solution, the lifting cylinder 2 is a hydraulic cylinder, which is vertically fixed to the base 1. The lifting cylinder 2 contains a piston rod, and its movement direction is consistent with the lifting direction of the platform 8; the lifting cylinder 2 further transmits the sprocket 4 and the chain 3 through the extension and retraction of its piston rod to drive the platform 8, so that the platform 8 moves up and down along the guide rail 13.

[0011] As a preferred technical solution, the platform device and the lifting control device are connected specifically as follows: the platform bracket 5 is in sliding contact with the guide rail 13, and the lifting function of the platform 8 is achieved by the lifting cylinder 2 through the sprocket 4 and driving the chain 3.

[0012] As a preferred technical solution, the motors 7 are fixed at the four corners of the platform 8, and each motor 7 controls a lifting hook 12. When lifting, the lifting hook 12 is hooked into the side groove of the lifted component. The angle of the lifting hook 12 is controlled by the motor 7 to achieve synchronous lifting of the lifted component.

[0013] As a preferred technical solution, the reducer 11 in the lifting support device is electrically connected to the motor 7, and the motor 7 drives the lifting hook 12 to rotate and fix the lifted component through the reducer 11.

[0014] As a preferred technical solution, the reducer 11 is a bevel gear reducer 11 .

[0015] According to another aspect of the present invention, a working method of a four-point synchronous lift is provided. The method is applied to a four-point synchronous lift device as described above, and is used to install a component to be lifted and installed, wherein the component is composed of n component sections, where n is a positive integer, and the method comprises the following steps:

[0016] S1, placing the component section on the base 1, at this time, the platform 8 is located at the bottom, and the motor 7 drives the lifting hook 12 to rotate so that it is perpendicular to the side of the component section to be lifted and installed;

[0017] S2, the piston rod of the lifting cylinder 2 is pushed out, driving the sprocket 4 to rise, and then driving the platform 8 to rise through the chain 3 and the sprocket 4, and at the same time the lifting hook 12 hooks the component section to make it rise as a whole;

[0018] S3, after the component section rises to a height where the next component section can be installed below it, the piston rod of the lifting cylinder 2 stops pushing out and maintains this position, so that the platform 8 is fixed at this position;

[0019] S4, placing the next component section on the base 1, then retracting the piston rod of the lifting cylinder 2, and the upper and lower component sections are fixedly connected after contact;

[0020] S5, repeat S2-S4 until all component nodes are connected;

[0021] S6, the platform 8 further descends, and at the same time the motor 7 drives the lifting hook 12 to rotate so that it will not collide with the component joints when descending, and the platform 8 stops after it reaches the bottom.

[0022] As a preferred technical solution, the four-point synchronous lift is also used to disassemble and assemble components that need to be lifted and disassembled, and the process is achieved by the reverse operation of S1-S6 in the method.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The four-point synchronous lifting device in the present invention includes a main body device, a platform device, a lifting support device and a lifting control device; wherein the lifting control device is installed on the main body device, the platform device is connected to the lifting control device, the lifting support device is installed at the four corners of the platform device, the main body device includes a base, a main support member and a main bracket; the platform device includes a platform, a platform bracket and a platform support member; the lifting support device includes a motor, a reducer and a lifting hook for supporting and fixing the lifted component; the lifting control device includes a lifting cylinder, a chain, a sprocket and a guide rail for controlling the lifting of the platform. The fixing of the lifted component is achieved by the motor, the reducer and the lifting hook, so that the time for installing and disassembling the component is shorter than that of the traditional fixing method, and the lifting efficiency is improved; at the same time, the motor can accurately control the lifting hook angle, and the installation is more accurate and reliable, realizing four-point synchronous lifting.

[0025] 2. The lifting cylinder in the present invention is a hydraulic cylinder, which is vertically fixed to the base. The lifting cylinder contains a piston rod, and its movement direction is consistent with the lifting direction of the platform. The lifting cylinder drives the platform through the extension and contraction of its piston rod, and further transmits with the sprocket and chain, so that the platform moves up and down along the guide rail. It is easy to implement, shortens the lifting time, and improves work efficiency.

[0026] 3. In the present invention, both the main device and the platform device are triangular structures; in the main device, the base, the main support and the main bracket are hinged in pairs, and the main bracket is fixedly connected to the base; in the platform device, the platform, the platform bracket and the platform support are hinged in pairs. The structure is simple and stable, and it is easy to disassemble. Compared with the traditional multiple cylinder lifting method, it is more stable and reliable.

[0027] 4. The present invention is composed of a main device, a platform device, a lifting support device and a lifting control device, wherein the components in each device are simple and common, so that the overall structure is simple, the flexibility is high, and the cost is lower, and it has good economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a front view of the four-point synchronous lift in the present invention in the raised state;

[0029] Figure 2 It is a side view of the four-point synchronous lifter in the present invention in the raised state;

[0030] Figure 3 This is a front view of the four-point synchronous elevator in the present invention in the descending state;

[0031] Figure 4 It is a side view of the descending state of the four-point synchronous elevator in the present invention;

[0032] Figure 5 It is a schematic diagram of a standard section of a four-point synchronous lift installation bracket in the embodiment;

[0033] In the figure, 1 is a base, 2 is a lifting cylinder, 3 is a chain, 4 is a sprocket, 5 is a platform bracket, 6 is a platform support, 7 is a motor, 8 is a platform, 9 is a main support, 10 is a main bracket, 11 is a reducer, 12 is a lifting hook, and 13 is a guide rail. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0035] At present, four-point synchronous lifting equipment has been widely used in various construction fields, especially in the construction of large components such as bridges and trusses. It is mainly composed of a base, lifting equipment and a lifting platform.

[0036] In order to lift large components, the various lifting points in the equipment are required to ensure that the lifting speed and position are synchronized and can adapt to the lifting requirements of components or objects of different types and sizes.

[0037] The existing four-point synchronous lifting device mainly has the following problems:

[0038] 1. The load that the equipment can withstand is relatively low, and cannot meet the needs of lifting large components and high loads during actual construction;

[0039] 2. The equipment is not flexible enough, is not easy to disassemble and transport, and cannot meet the lifting requirements of different organizations in different construction situations;

[0040] 3. The lifting process is too complicated, and the time for clamping and unloading components is long, resulting in low construction efficiency.

[0041] Example 1

[0042] In this embodiment, a four-point synchronous lifting device is applied, which includes a main body device, a platform device, a lifting support device and a lifting control device; wherein the lifting control device is installed on the main body device, the platform device is connected to the lifting control device, and the lifting support device is installed at the four corners of the platform device. The main body device includes a base 1, a main support member 9 and a main bracket 10; the platform device includes a platform 8, a platform bracket 5 and a platform support member 6; the lifting support device includes a motor 7, a reducer 11 and a lifting hook 12, which are used to support the lifted component; the lifting control device includes a lifting cylinder 2, a chain 3, a sprocket 4 and a guide rail 13, which are used to control the lifting of the platform 8.

[0043] In this embodiment, when the device is in the raised state, its front view is as follows: Figure 1 As shown, its side view is as Figure 2 As shown; when the device is in the descending state, its main view is as follows Figure 3 As shown, the side view is Figure 4 The main device and the platform device are both triangular structures; in the main device, the base 1, the main support member 9 and the main bracket 10 are hinged in pairs, and the main bracket 10 is fixedly connected to the base 1; in the platform device, the platform 8, the platform bracket 5 and the platform support member 6 are hinged in pairs.

[0044] The sprocket 4 in the lifting control device is fixedly connected to the piston rod of the lifting cylinder 2, and one end of the chain 3 is connected to the base 1, and after being guided around the sprocket 4, the other end is fixedly connected to the platform 8. The lifting cylinder 2 is a hydraulic cylinder, which is vertically fixedly connected to the base 1. The lifting cylinder 2 contains a piston rod, and its movement direction is consistent with the lifting direction of the platform 8; the lifting cylinder 2 further transmits the sprocket 4 and the chain 3 through the extension and contraction of its piston rod to drive the platform 8, so that the platform 8 moves up and down along the guide rail 13.

[0045] The platform device is connected with the lifting control device as follows: the platform bracket 5 is in sliding contact with the guide rail 13, and the lifting function of the platform 8 is realized by the lifting cylinder 2 through the sprocket 4 and the chain 3. The motor 7 is fixed at the four corners of the platform 8, and each motor 7 controls a lifting hook 12. When lifting, the lifting hook 12 is hooked into the groove on the side of the lifted component, and the angle of the lifting hook 12 is controlled by the motor 7 to achieve synchronous lifting of the lifted component.

[0046] The reducer 11 in the lifting support device is electrically connected to the motor 7. The motor 7 drives the lifting hook 12 to rotate and fix the lifted component through the reducer 11. The reducer 11 is a bevel gear reducer 11.

[0047] In this embodiment, the four-point synchronous lifting device is used for installation, and the standard section of the mounting bracket is shown as follows: Figure 5 As shown, the following steps are included:

[0048] First, place the standard section of the bracket on the base 1, with the platform 8 at the bottom, and the motor 7 drives the lifting hook 12 to rotate so that it is perpendicular to the side beam of the standard section of the bracket;

[0049] Then control the piston rod of the lifting cylinder 2 to push out, drive the sprocket 4 to rise, and then drive the platform 8 to rise through the chain 3 and the sprocket 4. At the same time, the lifting hook 12 hooks the standard section of the bracket to make it rise as a whole;

[0050] When the standard section of the bracket rises to a height where the next standard section of the bracket can be installed, the piston rod of the lifting cylinder 2 stops pushing out and maintains this position, and the platform 8 stops rising;

[0051] When the next bracket standard section is placed on the base 1, the piston rod of the lifting cylinder 2 is retracted, and the upper and lower bracket standard sections are fixedly connected after contact;

[0052] Then the platform 8 further descends, and at the same time the motor 7 drives the lifting hook 12 to rotate so that it will not collide with the standard section of the bracket when it descends, and the platform 8 stops after it reaches the bottom.

[0053] The above is a step for installing a standard section of a bracket. Repeating this step can achieve the installation of multiple standard sections of the bracket. At the same time, the disassembly step can be achieved by referring to the reverse operation of this step.

[0054] To sum up, in the four-point synchronous lifter, the fixation of the lifted component is achieved through the motor 7, the reducer 11, and the lifting hook 12, so that the time for installing and disassembling the component is shorter than that of the traditional fixing method, thereby improving the lifting efficiency; at the same time, the motor 7 can accurately control the angle of the lifting hook 12, making the installation more precise and reliable, and realizing four-point synchronous lifting.

[0055] Example 2

[0056] In this embodiment, a working method of a four-point synchronous lift is applied, which is used to install a component to be lifted and installed, wherein the component is composed of n component sections, where n is a positive integer, and the schematic diagram of the installation component section is as follows: Figure 5 As shown, the method comprises the following steps:

[0057] S1, placing the component section on the base 1, at this time, the platform 8 is located at the bottom, and the motor 7 drives the lifting hook 12 to rotate so that it is perpendicular to the side of the component section to be lifted and installed;

[0058] S2, the piston rod of the lifting cylinder 2 is pushed out, driving the sprocket 4 to rise, and then driving the platform 8 to rise through the chain 3 and the sprocket 4, and at the same time the lifting hook 12 hooks the component section to make it rise as a whole;

[0059] S3, after the component section rises to a height where the next component section can be installed below it, the piston rod of the lifting cylinder 2 stops pushing out and maintains this position, so that the platform 8 is fixed at this position;

[0060] S4, placing the next component section on the base 1, then retracting the piston rod of the lifting cylinder 2, and the upper and lower component sections are fixedly connected after contact;

[0061] S5, repeat S2-S4 until all component nodes are connected;

[0062] S6, the platform 8 further descends, and at the same time the motor 7 drives the lifting hook 12 to rotate so that it will not collide with the component joints when descending, and the platform 8 stops after it reaches the bottom.

[0063] The four-point synchronous lifter is also used for disassembling and assembling components that need to be lifted and disassembled, and the process is achieved by the reverse operation of S1-S6 in the above method.

[0064] In this embodiment, the method is applied to a four-point synchronous lifting device as described below, which includes a base 1, a lifting cylinder 2, a chain 3, a sprocket 4, a platform bracket 5, a platform support 6, a motor 7, a platform 8, a main support 9, a main bracket 10, a reducer 11, a lifting hook 12, and a guide rail 13. The lifting cylinder 2 is fixedly connected to the base 1, the platform 8 is slidably connected to the guide rail 13, the sprocket 4 is fixedly connected to the piston of the lifting cylinder 2, one end of the chain 3 is connected to the base 1, and the other end is connected and fixed to the platform 8 after being guided around the sprocket 4, and the main bracket 10 is fixedly connected to the base 1. The motor 7 and the reducer 11 are fixed on the platform 8, the platform bracket 5 and the platform support 6 are connected in an articulated manner, the lifting cylinder 2 drives the platform 8 through the extension and contraction of its piston rod and the transmission through the sprocket 4 and the chain 3, so that the platform 8 moves up and down along the guide rail 13, and the motor 7 drives the lifting hook 12 through the reducer 11 to rotate and fix the standard section of the bracket, and finally realizes the lifting of the standard section of the bracket.

[0065] The lifting cylinder 2 is a hydraulic cylinder, which is arranged vertically to the base 1. The piston movement direction of the lifting cylinder 2 is consistent with the lifting direction of the platform 8. The platform bracket 5 is in sliding contact with the guide rail 13. The lifting function of the platform 8 is realized by the lifting cylinder 2 through the sprocket 4 and driving the chain 3.

[0066] The motor 7 and the reducer 11 are fixed on the platform 8, and the lifting hook 12 is rotated by the motor 7 through the reducer 11. When lifting, the lifting hook 1212 is hooked in the groove on the side of the standard section of the bracket.

[0067] The platform bracket 5, the platform support member 6 and the platform 8 are hinged to each other, the main support member 9, the main bracket 10 and the base 1 are hinged to each other, and the platform 8 structure and the base 1 structure are both triangular support structures. The lifting cylinder 2 is connected to the sprocket 4 through a fixed shaft and is hinged to each other with the base 1.

[0068] There are four motors 7 , which are composed of a set of motors 7 , reducers 11 and lifting hooks 12 , which are respectively arranged at four lifting support positions of the platform 8 , and the reducer 11 is a bevel gear reducer 11 .

[0069] To sum up, in the working method of the four-point synchronous lifter, the fixation of the lifted component is achieved through the motor 7, the reducer 11, and the lifting hook 12, so that the time for installing and disassembling the component is shorter than that of the traditional fixing method, thereby improving the lifting efficiency; at the same time, the motor 7 can accurately control the angle of the lifting hook 12, making the installation more precise and reliable, and realizing four-point synchronous lifting.

[0070] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A four-point synchronous lifting device, characterized in that: The invention comprises a main device, a platform device, a lifting support device and a lifting control device; wherein the lifting control device is installed on the main device, the platform device is connected to the lifting control device, and the lifting support device is installed at the four corners of the platform device; the main device comprises a base (1), a main support member (9) and a main bracket (10); the platform device comprises a platform (8), a platform bracket (5) and a platform support member (6); the lifting support device comprises a motor (7), a reducer (11) and a lifting hook (12), which are used to support and fix the lifted component; the lifting control device comprises a lifting cylinder (2), a chain (3), a sprocket (4) and a guide rail (13), which are used to control the lifting of the platform (8).

2. A four-point synchronous lift according to claim 1, characterized in that: The main device and the platform device both have a triangular structure; in the main device, the base (1), the main support member (9) and the main bracket (10) are hinged in pairs, and the main bracket (10) is fixedly connected to the base (1); in the platform device, the platform (8), the platform bracket (5) and the platform support member (6) are hinged in pairs.

3. A four-point synchronous lift according to claim 1, characterized in that: The lifting cylinder (2) in the lifting control device is a hydraulic cylinder, which is vertically hinged on the base (1). The lifting cylinder (2) contains a piston rod, and its movement direction is consistent with the lifting direction of the platform (8); the lifting cylinder (2) further transmits the sprocket (4) and the chain (3) through the extension and contraction of its piston rod to drive the platform (8), so that the platform (8) moves up and down along the guide rail (13).

4. A four-point synchronous lift according to claim 3, characterized in that: The sprocket wheel (4) is fixedly connected to the piston rod of the lifting cylinder (2), and one end of the chain (3) is connected to the base (1), and after being guided around the sprocket wheel (4), the other end is fixedly connected to the platform (8).

5. A four-point synchronous lift according to claim 1, characterized in that: The platform device is connected to the lifting control device in the following way: the platform bracket (5) is in sliding contact with the guide rail (13), and the lifting function of the platform (8) is realized by the lifting cylinder (2) through the sprocket (4) and driving the chain (3).

6. A four-point synchronous lift according to claim 1, characterized in that: In the lifting support device, the motor (7) is fixed at the four corners of the platform (8), and each motor (7) controls a lifting hook (12). When lifting, the lifting hook (12) is hooked into a groove on the side of the lifted component, and the angle of the lifting hook (12) is controlled by the motor (7) to achieve synchronous lifting of the lifted component.

7. A four-point synchronous lift according to claim 1, characterized in that: The reducer (11) in the lifting support device is electrically connected to the motor (7), and the motor (7) drives the lifting hook (12) to rotate and fix the lifted component through the reducer (11).

8. A four-point synchronous lift according to claim 7, characterized in that: The reducer (11) is a bevel gear reducer (11).

9. A working method of a four-point synchronous lift, characterized in that: The method is applied to a four-point synchronous lifting device as described in any one of claims 1 to 8, and is used to install a component to be lifted and installed, wherein the component is composed of n component sections, where n is a positive integer, and the method comprises the following steps: S1, placing the component section on the base (1), at this time, the platform (8) is located at the bottom, and the motor (7) drives the lifting hook (12) to rotate so that it is perpendicular to the side of the component section to be lifted and installed; S2, the piston rod of the lifting cylinder (2) is pushed out, driving the sprocket (4) to rise, and then driving the platform (8) to rise through the chain (3) and the sprocket (4), and at the same time the lifting hook (12) hooks the component section to make it rise as a whole; S3, after the component section rises to a height at which the next component section can be installed, the piston rod of the lifting cylinder (2) stops pushing out and maintains this position, so that the platform (8) is fixed at this position; S4, placing the next component section on the base (1), after which the piston rod of the lifting cylinder (2) is retracted, and the upper and lower component sections are in contact and fixedly connected; S5, repeat S2-S4 until all component nodes are connected; S6, the platform (8) further descends, and at the same time the motor (7) drives the lifting hook (12) to rotate so that it will not collide with the component joints when descending, and the platform (8) stops after it reaches the bottom.

10. A working method of a four-point synchronous lifter according to claim 9, characterized in that: The four-point synchronous lift is also used for disassembling and assembling components that need to be lifted and disassembled, and the process is achieved by the reverse operation of S1-S6 in the method.

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