Prefabricated structural member lifting device and lifting method

Abstract

The present invention discloses a lifting device and a lifting method for a prefabricated structural member, and relates to the technical field of lifting devices, wherein a lifting device for a prefabricated structural member comprises: a movable bracket, one side of which is a sliding surface with an angle of no more than 90° with the lower side, and is equipped with a fixed pulley; a winch; a vertical slide seat, which is vertically slidably connected to the sliding surface; a horizontal slide seat, which is provided with at least two groups and both are horizontally slidably connected to the side of the vertical slide seat away from the sliding surface, and the ends of the two groups of horizontal slide seats located on the same horizontal plane that are close to each other are both provided with inclined surfaces inclined in opposite directions; a limiting rod, which is provided with at least two rods, and one end of which is detachably connected to the other ends of the two groups of horizontal slide seats located on the same horizontal plane that are away from each other; and a pressure piece, which is located between a plurality of the limiting rods, one end of which is slidably connected to the vertical slide seat, and cooperates with the inclined surface. The present application has the effect of ensuring the stability of the structural member during the lifting process.

Description

Technical Field

[0001] The present application relates to the technical field of lifting devices, and in particular to a lifting device and a lifting method for a prefabricated structural member. Background Art

[0002] Prefabricated structures are prefabricated steel, wood or concrete components according to design specifications, such as prefabricated beams and prefabricated columns. These components are manufactured in factories or other manufacturing sites and transported to the buildings at the intended destination for assembly and installation after completion. Lifting devices can lift and move heavy objects vertically and horizontally within a certain range, such as truck cranes and gantry cranes.

[0003] In the factory, due to the limitations of the site and equipment, such as tall equipment blocking the moving path of the gantry crane, it is not convenient for the truck crane to enter the factory, and it is difficult to achieve short-distance mobilization and irregular path movement of prefabricated structural parts through conventional lifting devices (such as truck cranes and gantry cranes). Summary of the invention

[0004] In order to improve the technical problem in the prior art that it is inconvenient to use conventional lifting devices to achieve short-distance mobilization and irregular path movement of prefabricated structural parts, and to ensure the stability of the structural parts during the lifting process, the present application provides a prefabricated structural part lifting device and a lifting method.

[0005] In a first aspect, the present application provides a prefabricated structural member lifting device, which adopts the following technical solution:

[0006] A lifting device for prefabricated structural parts comprises: a movable support, one side of which is a sliding surface with an angle of no more than 90° with the lower side, and a fixed pulley located at the top of the sliding surface is installed; a winch is installed on the movable support, and a rope extends from the fixed pulley to the front of the sliding surface for hooking the prefabricated part; a vertical slide is vertically slidably connected to the sliding surface; a horizontal slide is provided with at least two groups and both are horizontally slidably connected to the side of the vertical slide away from the sliding surface, and the ends of the two groups of horizontal slides located on the same horizontal plane that are close to each other are provided with inclined surfaces inclined opposite to each other; at least two limit rods are provided, and one end of each limit rod is detachably connected to the other end of the two groups of horizontal slides located on the same horizontal plane that are away from each other; and a pressure piece is located between the plurality of limit rods, one end of which is slidably connected to the vertical slide and cooperates with the inclined surface.

[0007] By adopting the above technical scheme, the mobile bracket is used as the lifting basis. During the lifting process, the mobile bracket is kept static and stable. It is only necessary to connect the rope of the winch with the hook on the prefabricated part through the hook, and then apply vertical pulling force to the prefabricated part through the winch. Since the sliding surface and the lower side have an angle of no more than 90°, the prefabricated part applies force toward the pressure-bearing part through gravity during the process of being lifted. The pressure-bearing part abuts against the inclined surface, so that the two groups of horizontal slides on the same horizontal plane slide toward each other, driving the limit rod to move horizontally toward the prefabricated part. Multiple limit rods form a clamp for the prefabricated part to prevent the prefabricated part from sliding horizontally. At the same time, the prefabricated part leans against the pressure-bearing part to maintain stability, so as to ensure the stability of the prefabricated part during the lifting process. After it is raised to a certain height, the short-distance movement can be achieved by pushing the mobile bracket, thereby improving the technical problem that it is not convenient to use conventional lifting devices to achieve short-distance mobilization and irregular path movement of prefabricated structural parts in the prior art.

[0008] Optionally, the horizontal slide includes a horizontal slider horizontally slidably connected to the vertical slide and a fixed plate one end of which is fixedly connected to the horizontal slider, the inclined surface is arranged on the horizontal slider, and one end of the limit rod is detachably connected to the other end of the fixed plate.

[0009] By adopting the above technical solution, when the prefabricated part is lifted and leaves the ground, under the action of gravity, the prefabricated part exerts force on the pressure-bearing part, causing the pressure-bearing part to slide and exerts force on the horizontal slider, causing the horizontal slider to slide, driving the fixed plate and the limit rod to slide at the same time, and utilizing the limit rod to clamp the prefabricated part to maintain stable movement.

[0010] Optionally, the fixing plate is provided with a plurality of internal threaded holes at intervals, and one end of the limiting rod is threadedly connected to the internal threaded hole.

[0011] By adopting the above technical solution, the spacing between the two limiting rods is changed by threading the limiting rods to different internal threaded holes, so as to ensure that the limiting rods can achieve a clamping state for the prefabricated part.

[0012] Optionally, the inclined surface is provided with a limiting groove, and the end of the pressure-bearing member extends into the limiting groove and abuts against a groove arm of the limiting groove.

[0013] By adopting the above technical solution, the limiting groove is used to limit the sliding path of the pressure-bearing part.

[0014] Optionally, the limiting groove has two groove walls along the groove length direction.

[0015] By adopting the above technical solution, the two groove walls in the length direction of the limiting groove can form a limiting effect on the sliding of the pressure-bearing part relative to the horizontal slider, preventing the pressure-bearing part and the horizontal slider from separating, making the clamping effect of the limiting rod invalid.

[0016] Optionally, the vertical slide includes a vertical slide plate vertically slidably connected to the sliding surface and at least two connecting plates whose one ends are respectively fixedly connected to both ends of the vertical slide plate, the horizontal slide is horizontally slidably connected to the vertical slide, and the pressure piece is slidably connected to the other end of the connecting plate.

[0017] By adopting the above technical solution, the vertical slide plate forms support for the horizontal slide seat and the pressure piece, so that the limit rod can smoothly form a clamping effect on the prefabricated part.

[0018] Optionally, the two inclined surfaces inclined in opposite directions are located between the two connecting plates, and one end of the horizontal slide seat provided with the inclined surface can abut against the connecting plate.

[0019] By adopting the above technical solution, the connecting plate is used to form a limit for the horizontal sliding of the horizontal slide, so as to prevent the horizontal slide and the vertical slide from being separated.

[0020] Optionally, a counterweight is installed on one end of the movable bracket away from the sliding surface.

[0021] By adopting the above technical solution, the movable bracket can be kept stable by using the counterweight block to prevent tilting due to the gravity of the prefabricated parts.

[0022] Optionally, the pressure-bearing member includes a pressure-bearing plate and at least four pressure-bearing rods, one end of which is fixedly connected to the pressure-bearing plate, and the other end of the pressure-bearing rod is matched with the inclined surface.

[0023] By adopting the above technical solution, when the prefabricated part is being lifted up, the prefabricated part applies force toward the pressure plate through the action of gravity, so that the pressure rod slides toward the inclined surface, thereby causing the horizontal slider to slide.

[0024] In a second aspect, the present application provides a lifting method applied to a lifting device for a prefabricated structure, which adopts the following technical solution:

[0025] A lifting method applied to the prefabricated structural component lifting device comprises the following steps: moving a movable support and making it stationary at the side of a prefabricated component to be lifted, and making the pressure-bearing component face the prefabricated component; connecting a hook of a winch and the prefabricated component; adjusting the position of the detachable connection between a limit rod and a horizontal slide seat; lifting the prefabricated component by means of a winch so that the prefabricated component leaves the ground; starting the movable support and moving it to a predetermined position, and then lowering the prefabricated component.

[0026] By adopting the above technical solution, a mobile bracket is set up and used as the basis of the entire lifting device. It can be used in factory buildings, and its use is not restricted by the path. The method of use is simple. It only needs to adjust the position of the limit rod and use the winch to lift the prefabricated part. The gravity of the prefabricated part can be used to clamp the prefabricated part with the limit rod to keep the prefabricated part stable during the movement.

[0027] In summary, this application includes the following beneficial technical effects:

[0028] 1. A mobile support having a sliding surface with an angle of no more than 90° with the horizontal plane is used as the basis of the lifting device, so that in the process of lifting the prefabricated parts by the winch, the gravity of the prefabricated parts is reasonably used to form pressure on the pressure-bearing parts, so that the pressure-bearing parts move toward the inclined surface and exert pressure on the inclined surface, so that the two sets of horizontal slides slide toward each other, driving the limit rods to clamp the prefabricated parts, thereby ensuring the stability of the prefabricated parts in the process of being moved and preventing them from shaking left and right. At the same time, the gravity of the prefabricated parts is used to make the prefabricated parts lean against the pressure-bearing parts, preventing the pressure-bearing parts from shaking in the direction away from the mobile support during the movement, maintaining the stability of the lifting, achieving short-distance movement, and improving the technical problems in the prior art that it is not convenient to use conventional lifting devices to achieve short-distance mobilization and irregular path movement of prefabricated structural parts;

[0029] 2. The gravity of the prefabricated parts is used to make the prefabricated parts lean against the pressure parts, forming friction between the prefabricated parts and the pressure parts. When the prefabricated parts are lifted by the winch and lifted off the ground, the pressure parts, the vertical slide and the horizontal slide can be synchronously slid up and down by the friction force to achieve stable support for the prefabricated parts.

[0030] 3. By using the method of threading the limit rods to different internal threaded holes, the distance between the two limit rods is changed to ensure that the limit rods can achieve a fastening and clamping state for the prefabricated parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an axonometric view of the prefabricated structural member lifting device of the present invention.

[0032] Figure 2 It is a first partial structural schematic diagram of the prefabricated structural member lifting device of the present invention, mainly showing the movable bracket.

[0033] Figure 3 It is a second partial structural schematic diagram of the prefabricated structural member lifting device of the present invention, mainly showing the installation structure of the vertical slide, the horizontal slide and the pressure member;

[0034] Figure 4 It is a partial exploded view of the prefabricated structural member lifting device of the present invention;

[0035] Figure 5 It is a schematic structural diagram of a vertical slide seat of a prefabricated structural member lifting device of the present invention;

[0036] Figure 6 It is a flow chart of the lifting method of the prefabricated structure lifting device of the present invention.

[0037] Explanation of the accompanying drawings: 1. Mobile bracket; 11. Frame; 12. Tire; 13. Fixed seat; 131. Sliding surface; 132. Vertical slide groove; 14. Fixed pulley; 2. Winch; 3. Vertical slide seat; 31. Vertical slide plate; 311. Horizontal slide groove; 32. Connecting plate; 33. Mounting plate; 34. Down-pressure rod; 4. Horizontal slide seat; 41. Horizontal slide block; 411. Inclined surface; 412. Limiting groove; 42. Fixed plate; 421. Internal threaded hole; 5. Return spring; 6. Limiting rod; 7. Pressure member; 71. Pressure plate; 72. Pressure rod; 8. Counterweight; 9. Prefabricated part. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-6 This application is described in further detail.

[0039] On the one hand, an embodiment of the present application discloses a prefabricated structural member lifting device.

[0040] Reference Figures 1 to 3 The prefabricated structural member lifting device includes a movable support 1, a winch 2 installed on the movable support 1, a vertical slide 3 vertically slidably connected to the movable support 1, at least two groups of horizontal slides 4 connected to the vertical slides in opposite horizontal directions, at least two limit rods 6 and a pressure member 7.

[0041] The side of the mobile bracket 1 that is close to the ground and arranged horizontally is the lower side, and one side of the side thereof is a sliding surface 131 that has an angle of no more than 90° with the lower side. When the side is at an angle of 90° with the horizontal plane, the sliding surface 131 is a vertical surface (such as Figure 1 and Figure 2 A fixed pulley 14 is installed on the top of the movable support 1 , and the fixed pulley 14 is located above the sliding surface 131 .

[0042] The winch 2 can be purchased from the market, and the required model can be purchased and installed on the mobile bracket 1. The rope of the winch 2 extends downward to the front of the sliding surface 131 through the fixed pulley 14, and a hook is fixed at the end of the rope to realize the lifting and lowering operation of the prefabricated part 9 through the hook.

[0043] The vertical sliding seat 3 is vertically slidably connected to the sliding surface 131 .

[0044] The horizontal slides 4 can be in two, four, or six groups, etc. The figure shows four groups, and two of them are arranged opposite to each other on two horizontal planes. The opposite horizontal slides 4 can slide horizontally toward or away from each other, and slide horizontally on the vertical slide 3. The two groups of horizontal slides 4 located on the same horizontal plane are both provided with inclined surfaces 411 inclined away from each other at their ends close to each other.

[0045] At least two limit rods 6 are provided, and the number is equal to that of the horizontal slides 4, so as to be arranged one-to-one with multiple groups of horizontal slides 4, and one end of the limit rod 6 is detachably connected to the other end of the horizontal slide 4, and the other end of the limit rod 6 extends outward perpendicular to the movable bracket 1, so that the limit rod 6 and the two groups of horizontal slides 4 form a horizontally opened "U"-shaped structure, and the open end is for the preformed parts 9 to enter and exit.

[0046] The pressure piece 7 is located between the plurality of limit rods 6 , and one end is slidably connected to the vertical slide seat 3 , that is, slidably connected to the opening of the aforementioned “U”-shaped structure, and the sliding end of the pressure piece 7 matches the inclined surface 411 .

[0047] The mobile support 1 is used as the lifting basis. During the lifting process, the mobile support 1 is kept stationary and stable. It is only necessary to connect the rope of the winch 2 with the hook on the prefabricated part 9, and then apply a vertical pulling force to the prefabricated part through the winch 2. Since the sliding surface 131 and the lower side (horizontal plane) have an angle of no more than 90°, the prefabricated part applies a force toward the pressure-bearing part 7 through the action of gravity during the lifting process of the prefabricated part, and the pressure-bearing part 7 abuts against the inclined surface 411, so that the two sets of horizontal The slide seats 4 slide towards each other, driving the limit rods 6 to move horizontally toward the prefabricated part 9. Multiple limit rods 6 form a clamp for the prefabricated part to prevent the prefabricated part from sliding horizontally. At the same time, the prefabricated part 9 leans against the pressure part 7 to maintain stability, so as to ensure the stability of the prefabricated part 9 during the lifting process. After it is raised to a certain height, it can be moved in a short distance by pushing the movable bracket 1, thereby improving the technical problem in the prior art that it is not convenient to use conventional lifting devices to realize short-distance mobilization and irregular path movement of prefabricated structural parts.

[0048] It should be noted that, in the process of lifting the preform 9 by the winch 2, under the component force of the gravity of the preform 9, a friction force is formed between the preform 9 and the pressure-bearing member 7, and under the action of this friction force, the pressure-bearing member 7, the horizontal slide 4 and the vertical slide 3 can slide upward at the same time. The component force of the gravity of the preform 9 occurs because the section of the rope from the fixed pulley 14 to the preform 9 is an inclined section, and an acute angle is obviously formed between the inclined section and the movable bracket 1. The other section of the rope also forms an acute angle with the horizontal plane to ensure that the winch 2 can smoothly apply the tension.

[0049] In addition, in advance, as a conventional lifting method, a hook is preset on the top of the prefabricated member 9, and the number and location of the hook are determined according to actual needs. Generally, a hook (such as Figure 1 ). When there are multiple hooks, an equal number of pull ropes can be connected to the ends of the pull ropes of the hoist 2 at the same time to achieve the pulling connection with the multiple hooks.

[0050] Based on the above embodiment, the mobile bracket 1 includes a frame 11, a plurality of tires 12 evenly distributed and installed at the bottom of the frame 11, and a fixing seat 13 fixedly connected to one side of the frame 11, and the sliding surface 131 is the side of the fixing seat 13 facing away from the frame 11.

[0051] The frame 11 may be a steel frame structure connected or welded by connecting pieces such as steel pipes, I-beams, and clamps. Figure 1 In the embodiment, the frame 11 is shown as a triangular three-dimensional structure. As another embodiment, the frame 11 can also be a quadrilateral or other polygonal three-dimensional structure.

[0052] The tire 12 can be purchased from the market and installed. It can adopt a tire structure with a braking function, such as a universal wheel with a brake or a brake caster, to achieve the stationary state of the entire mobile bracket 1.

[0053] The fixed seat 13 can be made of a plurality of vertically arranged slide rails or a whole slide plate, which is welded to the frame 11. A plurality of vertical slide grooves 132 are provided on the outer side of the fixed seat 13, and the vertical slide seat 3 is integrally formed with a vertical sliding block adapted to and slidably connected to the vertical slide grooves 132 to realize the vertical sliding of the vertical slide seat 3. The vertical slide groove 132 can be a stepped groove or a dovetail groove to prevent the vertical slide seat 3 from detaching from the fixed seat 13.

[0054] On the basis of the above embodiment, a return spring 5 is arranged between two groups of horizontal slides 4 arranged opposite to each other on the same horizontal plane, and both ends of the return spring 5 are respectively fixedly connected to the opposite ends of the two groups of horizontal slides 4 located on the same horizontal plane, so that through the action of the return spring 5, when the return spring 5 is in a natural state, the top end of the sliding surface 131 is close to the end of the pressure piece 7.

[0055] When the two groups of horizontal slides 4 slide toward each other under the indirect action of the gravity of the lifted preform 9, the return spring 5 is compressed and applies an outward elastic force to the horizontal slide 4. Under the action of the gravity of the preform 9, the pressure piece 7 simultaneously applies inward forces to the two horizontal slides 4. Under the action of these two forces, the horizontal slides 4 are kept stationary, thereby achieving stable support for the preform 9.

[0056] When there is no return spring 5, the two groups of horizontal slides 4 slide toward each other until the two groups of horizontal slides 4 abut against each other, and the preform 9 is stably supported, or the pressure piece 7 abuts against the bottom of the inclined surface 411, and the horizontal slides 4 stop sliding, and the preform 9 can be stably supported.

[0057] That is, by utilizing the elastic force of the above-mentioned return spring 5, the sliding speed of the horizontal slide 4 can be gradually reduced to improve safety. When the prefabricated part 9 is below, the elastic force of the return spring 5 can be utilized to make the opposite limit rods 6 synchronously release the clamping of the prefabricated part 9.

[0058] Based on the above embodiment, a mounting plate 33 is fixed on the upper side of the vertical slide 3, and the mounting plate 33 is connected to at least one downward pressure rod 34, one end of the downward pressure rod 34 is slidably or threadedly connected to the mounting plate 33, and the other end extends to the upper side of the preform 9.

[0059] When the preform 9 is lifted, the other end of the lower pressing rod 34 abuts against the upper side of the preform 9 to prevent the preform 9 and the pressure piece 7 from being separated, thereby ensuring that the pressure piece 7, the horizontal slide 4 and the vertical slide 3 slide upward at the same time.

[0060] The other end of the pressing rod 34 is bent downward at the front side of the preform 9 to prevent the lifted preform 9 from being separated from the pressure-bearing member 7 during the movement. At this time, one end of the pressing rod 34 is threadedly connected to the mounting plate 33.

[0061] On the basis of the above embodiment, a counterweight 8 is installed at one end of the frame body 11 away from the sliding surface 131 , so as to utilize the counterweight 8 to keep the movable support 1 stable and prevent the movable support 1 from tilting due to the gravity of the prefabricated part 9 .

[0062] Reference Figures 3 to 5 The vertical slide 3 includes a vertical slide plate 31 vertically slidably connected to the sliding surface 131 and at least two connecting plates 32 with one end fixedly connected to the vertical slide plate 31, one end of the two connecting plates 32 is respectively fixedly connected to the two ends of the vertical slide plate 31, the horizontal slide 4 is horizontally slidably connected to the vertical slide plate 31, and the pressure piece 7 is slidably connected to the other end of the connecting plate 32.

[0063] The vertical slide plate 31 can be welded by C-shaped steel and steel plate, and a vertical slider adapted to and slidably connected to the vertical slide groove 132 is welded at its closed end. A plurality of transverse slide grooves 311 are provided at its open end, and one end of the horizontal slide seat 4 is adapted to and slidably connected to the transverse slide groove 311, and the transverse slide groove 311 is a stepped groove or a dovetail groove to prevent the horizontal slide seat 4 and the vertical slide plate 31 from being separated from each other.

[0064] The connecting plate 32 is in an "L" shape, one end of which is fixedly connected to the end of the vertical slide plate 31, and the other ends of the two connecting plates 32 are bent toward each other, and through holes are opened at the ends for the pressure-bearing member 7 to be slidably connected.

[0065] In the figure, there are two transverse slide grooves 311, and four connecting plates 32 are provided. The vertical slider of the vertical slide plate 31 is rotatably connected with a plurality of balls, so that rolling friction is formed by the balls, friction is reduced, and sliding is facilitated.

[0066] The vertical slide plate 31 supports the horizontal slide seat 4 and the pressure piece 7 so that the limiting rod 6 can smoothly clamp the preform 9 .

[0067] Reference Figures 3 to 5 The horizontal slide 4 includes a horizontal slider 41 horizontally slidably connected to the vertical slide 3 and a fixed plate 42 with one end fixedly connected to the horizontal slider 41. The inclined surface 411 is set on the horizontal slider 41, and one end of the limiting rod 6 is detachably connected to the other end of the fixed plate 42.

[0068] When the preform 9 is lifted and leaves the ground, under the action of gravity, the preform 9 applies force to the pressure part 7, causing the pressure part 7 to slide and applies force to the horizontal slider 41, causing the horizontal slider 41 to slide, driving the fixed plate 42 and the limit rod 6 to slide at the same time, and the limit rod 6 is used to clamp the preform 9 to maintain stable movement.

[0069] The horizontal slider 41 has a horizontal slider adapted and slidably connected to the horizontal slide groove 311 on one side away from the inclined surface 411 to achieve connection with the vertical slide 31. A plurality of balls are rotatably connected to the horizontal slider of the horizontal slider 41 to reduce friction by rolling of the balls.

[0070] The fixing plate 42 is provided with a plurality of internal thread holes 421 at intervals, and one end of the limiting rod 6 is threadedly connected to the internal thread hole 421. By threading the limiting rod 6 to different internal thread holes 421, the spacing between two limiting rods 6 is changed to ensure that the limiting rod 6 can achieve a clamping state of the preform 9, so as to achieve clamping of the preform 9 of the supplementary size. In the figure, four limiting rods 6 are provided to achieve stable clamping of the preform 9.

[0071] At the same time, the preforms 9 of different thicknesses can be clamped by adjusting the length of the threaded connection of the limiting rod 6 .

[0072] As a parallel solution, the limiting length of the limiting rod 6 can be adjusted by sliding the limiting rod 6 to the internal threaded hole 421 and threading a limiting nut on the limiting rod 6 .

[0073] The two inclined surfaces 411 inclined in opposite directions are located between the two connecting plates 32, and one end of the horizontal slide 4 provided with the inclined surface 411 can abut against the connecting plate 32, that is, the horizontal slider 41 can abut against the connecting plate 32 after sliding, and the connecting plate 32 forms a limiting effect on the opposite sliding of the two horizontal sliders 41, thereby preventing the horizontal slider 41 from slipping off the vertical slider 31.

[0074] Reference Figures 3 to 5 The pressure-bearing member 7 includes a pressure-bearing plate 71 and at least four pressure-bearing rods 72 , one end of which is fixedly connected to the pressure-bearing plate 71 , and the other end of the pressure-bearing rod 72 matches with the inclined surface 411 .

[0075] When the preform 9 is being lifted up, the preform 9 applies force toward the pressure plate 71 due to gravity, so that the pressure rod 72 slides toward the inclined surface 411 , thereby causing the horizontal slider 41 to slide.

[0076] Specifically, the number of the compression rods 72 may be four, five, six, or seven, etc., and the compression rods 72 are evenly distributed on the compression plate 71 , so as to achieve stable and balanced support for the prefabricated component 9 through the compression plate 71 .

[0077] The other end of the pressure rod 72 is adapted to and slidably connected to the through hole of the connecting plate 32 , and the end portion faces the inclined surface 411 .

[0078] Among them, the other end of the pressure rod 72 is a spherical end to reduce friction; as a parallel solution, a steel ball or roller can be rotated at the other end of the pressure rod 72 to reduce friction.

[0079] A limiting groove 412 is provided on the inclined surface 411, and the other end of the pressure rod 72 of the pressure piece 7 extends into the limiting groove 412 and abuts against the groove arm of the limiting groove 412. The limiting groove 412 is used to limit the sliding path of the pressure rod 72 of the pressure piece 7. At the same time, the limiting groove 412 and the vertical slide seat 3 are used to limit the pressure piece 7, so as to keep the sliding direction of the pressure piece 7 unchanged and prevent the pressure piece 7 from being deformed due to the pressure of the preform 9.

[0080] On the basis of the above-mentioned embodiment, the limiting groove 412 has two groove walls along the groove length direction, that is, the limiting groove 412 does not penetrate the horizontal sliding block 41 along the groove length direction.

[0081] The two groove walls of the limiting groove 412 in the groove length direction form a limiting effect on the sliding of the pressure-bearing member 7 relative to the horizontal slider 41, thereby preventing the pressure-bearing member 7 and the horizontal slider 41 from being separated, making the clamping effect of the limiting rod 6 invalid.

[0082] Reference Figure 6 On the other hand, the embodiment of the present application discloses a lifting method applied to a lifting device for a prefabricated structure, comprising the following steps:

[0083] Move the movable support 1 and make it stationary at the side of the prefabricated part 9 to be lifted, and make the pressure-bearing part 7 face the prefabricated part 9;

[0084] Connect the hook of the hoist 2 and the prefabricated part 9;

[0085] Adjust the position of the detachable connection between the limit rod 6 and the horizontal slide 4;

[0086] The prefabricated component 9 is lifted up by the winch 2 so that the prefabricated component 9 leaves the ground;

[0087] Start the movable support 1, move it to the predetermined position, and then lower the prefabricated part 9.

[0088] When the movable bracket 1 is moved and stationary on the side of the prefabricated part 9 to be lifted, the pressure plate 71 of the pressure part 7 can be directly abutted against the side of the prefabricated part 9. At the same time, the position of the lower pressure rod 34 can be adjusted so that the lower pressure rod 34 and its bent end are simultaneously abutted against the prefabricated part 9.

[0089] Before or after the hook of the hoist 2 is connected to the prefabricated component 9, the position of the detachable connection between the limit rod 6 and the horizontal slide 4 can be adjusted.

[0090] By setting up a mobile bracket 1 and utilizing the mobile bracket 1 as the basis of the entire lifting device, it can be used in a factory building, and its use is not restricted by the path, and the method of use is simple. It only needs to adjust the position of the limit rod 6 and then use the winch 2 to lift the prefabricated part 9. The gravity of the prefabricated part 9 can be utilized to clamp the prefabricated part 9 by the limit rod 6 to keep the prefabricated part 9 stable during the movement.

[0091] The manufacturing cost of the whole lifting device is low, and only the hoisting machine 2 needs to be purchased and installed. The frame 11, the fixed pulley 14, the vertical slide seat 3 and other components can be manufactured by on-site processing.

[0092] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A prefabricated structural member lifting device, characterized in that: include: A movable bracket (1), one side of which is a sliding surface (131) with an angle of no more than 90° with the lower side, and a fixed pulley (14) located at the top of the sliding surface (131); A winch (2) is mounted on the movable support (1), and a rope extends from the fixed pulley (14) to the front of the sliding surface (131) for hooking the prefabricated component (9); A vertical sliding seat (3) vertically slidably connected to the sliding surface (131); At least two groups of horizontal slides (4) are provided and are horizontally slidably connected to a side of the vertical slide (3) away from the sliding surface (131), and the ends of the two groups of horizontal slides (4) located on the same horizontal plane that are close to each other are provided with inclined surfaces (411) inclined in opposite directions; At least two limiting rods (6) are provided, and one end of each limiting rod is detachably connected to the other ends of two groups of horizontal slide seats (4) located on the same horizontal plane and away from each other; and a pressure-bearing member (7), located between the plurality of limit rods (6), one end of which is slidably connected to the vertical sliding seat (3) and matched with the inclined surface (411); The horizontal slide seat (4) comprises a horizontal slide block (41) horizontally slidably connected to the vertical slide seat (3) and a fixed plate (42) one end of which is fixedly connected to the horizontal slide block (41); the inclined surface (411) is provided on the horizontal slide block (41); one end of the limit rod (6) is detachably connected to the other end of the fixed plate (42); The fixing plate (42) is provided with a plurality of internal thread holes (421) at intervals, and one end of the limiting rod (6) is threadedly connected to the internal thread hole (421); The inclined surface (411) is provided with a limiting groove (412), and the end of the pressure-bearing member (7) extends into the limiting groove (412) and abuts against a groove arm of the limiting groove (412); The limiting groove (412) has two groove walls along the groove length direction; The vertical slide (3) comprises a vertical slide plate (31) vertically slidably connected to the sliding surface (131) and at least two connecting plates (32) one end of which is fixedly connected to the two ends of the vertical slide plate (31), the horizontal slide (4) is horizontally slidably connected to the vertical slide plate (31), and the pressure-bearing member (7) is slidably connected to the other end of the connecting plate (32); the two inclined surfaces (411) inclined opposite to each other are located between the two connecting plates (32), and one end of the horizontal slide (4) provided with the inclined surface (411) can abut against the connecting plate (32); the pressure-bearing member (7) comprises a pressure plate (71) and at least four pressure rods (72) one end of which is fixedly connected to the pressure plate (71), and the other end of the pressure rod (72) cooperates with the inclined surface (411).

2. A prefabricated structural member lifting device according to any one of claim 1, characterized in that: A counterweight (8) is mounted on one end of the movable bracket (1) facing away from the sliding surface (131).

3. A lifting method applied to the lifting device for prefabricated structural parts according to any one of claims 1 to 2, characterized in that: The following steps are involved: The movable support (1) is moved and made stationary at the side of the prefabricated component (9) to be lifted, and the pressure-bearing component (7) is directed toward the prefabricated component (9); Connecting the hook of the winch (2) and the prefabricated component (9); Adjust the position of the detachable connection between the limit rod (6) and the horizontal slide seat (4); Lifting the prefabricated component (9) upwards by means of a winch (2) so that the prefabricated component (9) leaves the ground; The movable support (1) is started to move to a predetermined position, and then the prefabricated component (9) is lowered.

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