Overturning assembly lifting appliance

Abstract

The invention relates to the technical field of lifting equipment, and discloses a turnover assembly lifting appliance which comprises a lifting frame and a clamping mechanism rotationally connected to the bottom of the lifting frame, and a driving assembly is arranged on the lifting frame and used for driving the clamping mechanism to rotate around a rotating axis extending in the first horizontal direction. The holding and clamping mechanism comprises a distance adjusting assembly and two holding and clamping assemblies arranged in the first horizontal direction, a width-adjustable holding and clamping space is formed between the two holding and clamping assemblies, the holding and clamping space is used for containing the porous component to be hoisted, and the distance adjusting assembly is arranged to be capable of adjusting the distance between the two holding and clamping assemblies. According to the overturning assembly lifting appliance provided by the invention, reliable lifting of the porous component can be realized; when the porous component is hoisted to the assembly station of the assembly line, the clamping mechanism clamping the porous component is driven by the driving assembly to turn over, the clamping mechanism can be conveniently and rapidly aligned with an opponent piece of the porous component, and therefore the assembly efficiency of the porous component is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting equipment, in particular to a turnover assembly hoist. Background Art

[0002] During the assembly process of the assembly line, there is no shortage of demands for the lifting of porous components, such as engine shock absorbers, flywheels, etc. Such porous components generally have several through holes arranged on the periphery of the axis, which are fastened to their counterparts by bolts. Due to the heavy weight of such porous components, manual handling and assembly will generate a large workload, which does not meet the requirements of ergonomics and poses safety risks. In addition, the efficiency of manual handling and assembly is not high, which has a great impact on the production rhythm of the assembly line.

[0003] When traditional hoists are used to lift components that need to be assembled, it is required that the components have suitable lifting points, or that the periphery of the components can be clamped as a whole. For such porous components, there are no other reasonable clamping points except for grabbing and lifting through the through holes on the periphery of the axis. In addition, when the components are lifted to the assembly station of the assembly line, in order to easily assemble them on the opponent, the hoisting equipment is also required to achieve a certain flipping action. For such porous components that lack suitable lifting points and reasonable clamping points, traditional hoists are often difficult to meet the lifting requirements. Summary of the invention

[0004] The purpose of the present invention is to provide a flip assembly hanger to address the problem that the prior art lacks corresponding hangers for lifting porous components. The flip assembly hanger can not only realize the reliable lifting of porous components, but also realize the flipping of porous components, thereby meeting the assembly requirements of such porous components in different scenarios.

[0005] In order to achieve the above-mentioned objectives, the present invention provides a flip assembly sling, comprising a lifting frame and a clamping mechanism rotatably connected to the bottom of the lifting frame, the lifting frame is provided with a driving assembly for driving the clamping mechanism to rotate around a rotation axis extending along a first horizontal direction, the clamping mechanism comprises a spacing adjustment assembly and two clamping assemblies arranged along the first horizontal direction, a clamping space with adjustable width is formed between the two clamping assemblies, the clamping space is used to accommodate a porous component to be lifted, and the spacing adjustment assembly is configured to be able to adjust the spacing between the two clamping assemblies.

[0006] Optionally, the clamping mechanism is rotatably connected to the bottom of the lifting frame by a flipping square tube, and the clamping mechanism includes a mounting plate for mounting the spacing adjustment assembly, and a rotating shaft extending in a vertical direction is provided on the mounting plate, and the rotating shaft is freely rotatably connected to the flipping square tube so that the mounting plate can rotate with the axis of the rotating shaft as the center of a circle.

[0007] Optionally, a limit switch is provided on the clamping mechanism, and a limit switch detection plate is provided on each of the two clamping assemblies. The limit switch can detect the position of the limit switch detection plate and output a status signal.

[0008] Optionally, each of the clamping assemblies comprises a connecting block and a clamping claw mounted on the connecting block, and the clamping claws on the two clamping assemblies are arranged opposite to each other;

[0009] Optionally, two claws are provided on each of the connecting blocks, and the two claws are spaced apart along a second horizontal direction, wherein the second horizontal direction is perpendicular to the first horizontal direction.

[0010] Optionally, the two claws on each of the connecting blocks are arranged to be able to approach each other or move away from each other along the second horizontal direction.

[0011] Optionally, the driving assembly includes a double-acting cylinder, which is hinged to the lifting frame, and the telescopic rod of the double-acting cylinder is hinged to a position of the clamping mechanism that deviates from its rotation axis, so that the telescopic rod of the double-acting cylinder can drive the clamping mechanism to rotate around the rotation axis extending along the first horizontal direction when extending or retracting.

[0012] Optionally, two double-acting cylinders are provided, and the two double-acting cylinders are spaced apart on the lifting frame.

[0013] Optionally, the hanging frame includes a top support plate and side support plates extending downwardly at both ends thereof, and a hanging portion is provided on the top support plate for hanging the hanging frame.

[0014] Optionally, the spacing adjustment component is a clamping cylinder, and the clamping component is connected to the output end of the clamping cylinder.

[0015] Optionally, a protective cover is also provided on the hoisting frame to prevent residues of the porous component from popping out during the hoisting process.

[0016] In the technical solution provided by the present invention, the distance between the two clamping assemblies is adjusted by a distance adjustment assembly, so that the two clamping assemblies can be clamped and fixed from both ends of the through hole of the porous component, thereby realizing reliable lifting of the porous component; since the clamping mechanism is rotatably connected to the lifting frame, and a driving assembly is provided on the lifting frame, the driving assembly can drive the clamping mechanism to rotate around a rotation axis extending along a first horizontal direction. When the porous component is lifted to the assembly station of the assembly line, the clamping mechanism holding the porous component is driven to flip by the driving assembly, which facilitates rapid alignment with the counterpart of the porous component, thereby effectively improving the assembly efficiency of the porous component. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a flip assembly hanger provided by the present invention;

[0018] Figure 2 yes Figure 1 Front view of the middle clamping mechanism;

[0019] Figure 3 It is a partial cross-sectional view of a clamping mechanism provided by the present invention;

[0020] Figure 4 It is an exploded schematic diagram of a clamping assembly provided by the present invention.

[0021] Description of Reference Numerals

[0022] X, first horizontal direction; Y, second horizontal direction; 100, hoisting frame; 110, top support plate; 111, hoisting part; 120, side support plate; 130, flip square tube; 131, cylinder drive connecting plate; 140, cylinder positioning square tube; 141, cylinder hanging connecting plate; 150, first button box; 151, first button; 152, second button; 160, second button box; 161, third button; 170, handle; 200, clamping mechanism; 201, Clamping space; 210, clamping assembly; 211, connecting block; 212, claw; 213, L-shaped connecting block; 214, slider; 220, mounting plate; 221, rotating shaft; 222, bushing; 223, nut; 230, limit switch; 240, limit switch detection plate; 250, clamping claw cylinder; 260, connecting bolt; 270, housing; 300, driving assembly; 310, double-acting cylinder; 311, telescopic rod; 312, cylinder connecting block; 313, connecting rod. DETAILED DESCRIPTION

[0023] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0024] As mentioned above, combined with Figure 1 As shown, the present invention provides a flip assembly hanger, including a lifting frame 100 and a clamping mechanism 200 rotatably connected to the bottom of the lifting frame 100, the lifting frame 100 is provided with a driving assembly 300 for driving the clamping mechanism 200 to rotate around a rotation axis extending along a first horizontal direction X, the clamping mechanism 200 includes a spacing adjustment assembly and two clamping assemblies 210 arranged along the first horizontal direction X, a clamping space 201 with adjustable width is formed between the two clamping assemblies 210, the clamping space 201 is used to accommodate a porous component to be lifted, and the spacing adjustment assembly is configured to be able to adjust the spacing between the two clamping assemblies 210.

[0025] In the technical solution provided by the present invention, the distance between the two clamping assemblies 210 is adjusted by a distance adjustment assembly, so that the two clamping assemblies 210 can be clamped and fixed from both ends of the through hole of the porous component, thereby realizing reliable lifting of the porous component; since the clamping mechanism 200 is rotatably connected to the lifting frame 100, and a driving assembly 300 is provided on the lifting frame 100, the driving assembly 300 can drive the clamping mechanism 200 to rotate around a rotation axis extending along the first horizontal direction X. When the porous component is lifted to the assembly station of the assembly line, the driving assembly 300 drives the clamping mechanism 200 clamping the porous component to flip, which is convenient for rapid alignment with the counterpart of the porous component, thereby effectively improving the assembly efficiency of the porous component.

[0026] It should be noted that traditional slings are often difficult to accommodate the lifting requirements of multiple components of the same type and different sizes. When slings are separately provided for multiple components of the same type and different sizes, there are problems such as high cost, cumbersome switching of product lines, and easy confusion during use. The two clamping assemblies 210 in the present invention can adjust the spacing through the spacing adjustment assembly, ensuring the compatibility of the flip assembly sling with components of the same type and different sizes.

[0027] In the present invention, the clamping mechanism 200 can be rotatably connected to the bottom of the hanging frame 100 in any appropriate form, as long as the clamping mechanism 200 can be rotated around the rotation axis extending along the first horizontal direction X under the driving action of the driving assembly 300. In a specific embodiment of the present invention, the clamping mechanism 200 is rotatably connected to the bottom of the hanging frame 100 through the flip square tube 130, and the clamping mechanism 200 includes a mounting plate 220 for mounting the spacing adjustment assembly, and a rotating shaft 221 extending in the vertical direction is provided on the mounting plate 220, and the rotating shaft 221 is freely rotatably connected to the flip square tube 130 so that the mounting plate 220 can rotate with the axis of the rotating shaft 221 as the center of the circle.

[0028] Through the above-mentioned arrangement, during specific use, the clamping mechanism 200 that clamps the porous component can not only flip relative to the lifting frame 100 under the drive of the driving assembly 300, but can also rotate with the axis of the rotating shaft 221 extending in the vertical direction as the center of the circle, that is, the clamping mechanism 200 has double degrees of freedom, can match a variety of assembly conditions, and further facilitate the workers' assembly operations.

[0029] In the present invention, a limit switch 230 is provided on the clamping mechanism 200, and a limit switch detection plate 240 is provided on each of the two clamping assemblies 210. The limit switch 230 can detect the position of the limit switch detection plate 240 and output a status signal.

[0030] It is understandable that the status signal can further be used to remind the operator in the form of lights and sounds. When the porous component is clamped, the limit switch 230 provided on the clamping mechanism 200 outputs a status signal, such as turning on an indicator light or a buzzer, to remind the operator that the component has been clamped in place when it detects that the limit switch detection plate 240 moves into place with the clamping assembly 210. The above arrangement effectively avoids the risk of the porous component falling off after lifting and transfer due to inadequate clamping during the lifting process. It should be noted that the limit switch 230 can be further linked with the lifting equipment. If the porous component is not clamped in place, the lifting equipment cannot be started for lifting operations.

[0031] In the present invention, the two clamping assemblies 210 are used to clamp the two ends of the through hole outside the axis of the porous component. In some embodiments, each of the clamping assemblies 210 includes a connecting block 211 and a claw 212 installed on the connecting block 211, and the claws 212 on the two clamping assemblies 210 are arranged opposite to each other. In the process of clamping and fixing the porous component, the clamping space 201 between the two clamping assemblies 210 is first enlarged by the spacing adjustment assembly to be sufficient to accommodate the porous component to be hoisted, and then the two clamping assemblies 210 are reduced by the spacing adjustment assembly so that the claws 212 on the clamping assemblies 210 are just clamped into the through hole outside the axis of the porous component, thereby clamping and fixing the porous component.

[0032] In some embodiments, two claws 212 are provided on each of the connecting blocks 211, and the two claws 212 are arranged at intervals along the second horizontal direction Y, wherein the second horizontal direction Y is perpendicular to the first horizontal direction X; by providing two claws 212, the two through holes on the periphery of the axis of the porous component can be clamped at the same time, thereby improving the effect of clamping and fixing the porous component.

[0033] In some embodiments, the two claws 212 on each of the connecting blocks 211 are configured to be able to move closer to or farther from each other along the second horizontal direction Y. It can be understood that by configuring the two claws 212 on the connecting block 211 to be able to move closer to or farther from each other, the clamping assembly 210 can further adapt to the clamping requirements of porous components of various specifications and sizes.

[0034] In the present invention, the driving assembly 300 can be in any appropriate form, as long as it can drive the clamping mechanism 200 to rotate around the rotation axis extending along the first horizontal direction X, for example, by driving the clamping mechanism 200 to rotate around the rotation axis extending along the first horizontal direction X through the cooperation of a servo motor and a screw transmission device. In one embodiment of the present invention, the driving assembly 300 includes a double-acting cylinder 310, the double-acting cylinder 310 is hinged to the hoisting frame 100, and the telescopic rod 311 of the double-acting cylinder 310 is hinged to the position of the clamping mechanism 200 that deviates from its rotation axis, so that the telescopic rod 311 of the double-acting cylinder 310 can drive the clamping mechanism 200 to rotate around the rotation axis extending along the first horizontal direction X when the telescopic rod 311 of the double-acting cylinder 310 is extended or retracted.

[0035] In the present invention, the double-acting cylinder 310 can extend and retract its telescopic rod 311 by controlling different air intake directions, thereby driving the clamping mechanism 200 to rotate around the rotation axis extending along the first horizontal direction X.

[0036] In some embodiments, two double-acting cylinders 310 are provided, and the two double-acting cylinders 310 are arranged at intervals on the hanging frame 100. By providing two double-acting cylinders 310 to achieve synchronous drive, the stability and reliability of the rotation of the clamping mechanism 200 relative to the hanging frame 100 are ensured.

[0037] In the present invention, the hoisting frame 100 mainly plays a supporting and fixing role, and is used to install and arrange components such as the clamping mechanism 200 and the driving assembly 300. In one embodiment of the present invention, the hoisting frame 100 includes a top support plate 110 and side support plates 120 extending downwardly at both ends thereof, and a hoisting portion 111 is provided on the top support plate 110 for hoisting the hoisting frame 100.

[0038] For details, please refer to Figure 1 As shown, in some embodiments, the hoisting portion 111 is a nut welded on the top support plate 110, through which it can be easily connected to a lifting device such as an electric hoist, thereby improving assembly flexibility. Further, the nut is welded to the bottom side of the top support plate 110, and a through hole that intersects with the screw hole of the nut is provided on the top support plate 110. Through the above arrangement, the strength of the connection between the nut and the lifting device such as the electric hoist is improved, thereby ensuring the reliability and safety of the lifting.

[0039] In a specific embodiment of the present invention, the clamping mechanism 200 is rotatably connected between the bottom ends of the two side support plates 120 through the flipping square tube 130, and the two ends of the flipping square tube 130 are respectively rotatably connected with the two side support plates 120, and the clamping mechanism 200 is connected to the middle position of the flipping square tube 130 and extends downward.

[0040] Furthermore, the clamping mechanism 200 includes a mounting plate 220 for mounting the spacing adjustment assembly, and a rotating shaft 221 extending in the vertical direction is provided on the mounting plate 220, and the rotating shaft 221 is freely rotatably connected to the flip square tube 130 through a shaft sleeve 222 so that the mounting plate 220 can rotate with the axis of the rotating shaft 221 as the center of the circle. In this way, the clamping mechanism 200 can not only perform a flipping action relative to the hoisting frame 100 under the drive of the driving assembly 300, but also rotate with the axis of the rotating shaft 221 extending in the vertical direction as the center of the circle, that is, the double degrees of freedom of the clamping mechanism 200 are realized, thereby meeting the needs of various assembly conditions and further facilitating the assembly work of the workers.

[0041] Furthermore, combined Figure 2 , Figure 3 As shown, the rotating shaft 221 is a bolt, which connects the mounting plate 220 of the clamping mechanism 200 and the flip square tube 130. The two ends of the flip square tube 130 are respectively connected to the two side support plates 120 for rotation, and the flip function of the clamping mechanism 200 is realized under the driving action of the driving assembly 300. The lower end of the bolt forms a stop and limit with the mounting plate 220 through the bolt head, and the upper end of the bolt is positioned by a nut 223. The sleeve 222 is sleeved on the bolt, and the large diameter end of the sleeve 222 can position the lower side of the flip square tube 130.

[0042] In a specific embodiment of the present invention, Figure 1 As shown, the hoisting frame 100 is provided with a cylinder positioning square tube 140 for installing and arranging the double-acting cylinder 310, and the cylinder positioning square tube 140 is provided with two parallel and spaced cylinder hanging connecting plates 141, and the double-acting cylinder 310 is provided with a cylinder connecting block 312 at one end away from its telescopic rod 311, and the cylinder connecting block 312 is rotatably arranged between the two cylinder hanging connecting plates 141; the telescopic rod 311 of the double-acting cylinder 310 is connected with a connecting rod 313, and the side of the flip square tube 130 is provided with two parallel and spaced cylinder driving connecting plates 131, and the connecting rod 313 is rotatably arranged between the two cylinder driving connecting plates 131.

[0043] In the present invention, the spacing adjustment component can be any appropriate device as long as it can adjust the spacing between the two clamping components 210. In one embodiment of the present invention, the spacing adjustment component is a clamping claw cylinder 250, and the clamping claw cylinder 250 is connected to the output end of the clamping claw cylinder 250. The clamping claw cylinder 250 can drive the two clamping claw assemblies 210 to approach each other so as to clamp the porous member.

[0044] It should be noted that, in the present invention, the clamping cylinder 250 is a standard part, and different specifications can be selected according to different lifting requirements during specific use. The specific application of the clamping cylinder 250 includes not only the case of two clamping claws 212 described in the present invention, but also the case of three clamping claws 212 and four clamping claws 212 to meet the lifting requirements of more complex porous components.

[0045] Combination Figure 3 As shown, the clamping jaw cylinder 250 is connected and fixed to the mounting plate 220 by connecting bolts 260 , and a housing 270 is disposed outside the clamping jaw cylinder 250 and the mounting plate 220 .

[0046] Combination Figure 4 The figure shows a specific embodiment of a clamping assembly 210 provided by the present invention, wherein the limit switch detection plate 240 is fixed to the connection block 211 by means of a hexagon socket bolt, and the limit switch 230 outputs a state signal when detecting that the limit switch detection plate 240 moves into position along with the connection block 211. The upper end of the connection block 211 is connected to a slider 214 through an L-shaped connection block 213, and the slider 214 cooperates with the output end of the clamping claw cylinder 250, so that the two clamping claws 212 connected to the two connection blocks 211 are moved closer to or farther away from each other.

[0047] It can be understood that, in the present invention, the first button 151 for starting the spacing adjustment component to reduce the spacing between the two clamping components 210 and the second button 152 for starting the spacing adjustment component to increase the spacing between the two clamping components 210 are arranged at different positions of the hoisting frame 100, for example, the first button 151 is arranged on the side support plate 120 of the hoisting frame 100, and the second button 152 is arranged on the top support plate 110 of the hoisting frame 100. The above arrangement can effectively prevent the operator from loosening the clamping claw 212 during hoisting due to misoperation or mistouch, thereby causing safety risks.

[0048] In one embodiment of the present invention, a first button box 150 is provided on one of the side support plates 120 for placing electrical components and integrated wiring of the spacing adjustment assembly, and a second button box 160 is provided on the other side support plate 120 for placing electrical components and integrated wiring of the driving assembly 300, and a third button 161 is provided on the surface of the second button box 160 for starting the driving assembly 300.

[0049] Furthermore, for the convenience of operation, a handle 170 is provided on the first button box 150 and / or the second button box 160. When hoisting the porous component, the operator can hold the handle 170 to assist in controlling the position of the porous component.

[0050] The flip assembly sling provided by the present invention, when in use, the operator can rely on lifting equipment such as an electric hoist to move the flip assembly sling as a whole to the location of the porous component to be hoisted. Based on the characteristics of the clamping mechanism 200 having two degrees of freedom, the porous component can be conveniently clamped and fixed by the clamping assembly 210; when it is lifted and moved to the assembly station of the assembly line, the clamping mechanism 200 holding the porous component is driven to flip by the driving assembly 300, so as to facilitate rapid alignment with the counterpart of the porous component and realize rapid assembly of the porous component. After the assembly is completed, the spacing between the two clamping assemblies 210 is increased by the spacing adjustment assembly to realize the separation of the sling from the porous component.

[0051] The flip assembly hanger provided by the present invention provides a safe and reliable lifting solution for porous components, and the two clamping assemblies 210 in the present invention can adjust the spacing through the spacing adjustment assembly, ensuring the compatibility of the flip assembly hanger with porous components of the same type and different sizes; combined with the double degrees of freedom of the clamping mechanism 200, it can match a variety of assembly conditions, further facilitate the workers' assembly operations, and improve the efficiency of the assembly operations.

[0052] In the present invention, a protective cover is also provided on the hoisting frame 100 to prevent the residues of the porous component from jumping out during the hoisting process.

[0053] The preferred embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A flip assembly hanger, characterized in that: The invention comprises a hoisting frame (100) and a clamping mechanism (200) rotatably connected to the bottom of the hoisting frame (100); a driving assembly (300) is provided on the hoisting frame (100) for driving the clamping mechanism (200) to rotate around a rotation axis extending along a first horizontal direction (X); the clamping mechanism (200) comprises a spacing adjustment assembly and two clamping assemblies (210) arranged along the first horizontal direction (X); a clamping space (201) with adjustable width is formed between the two clamping assemblies (210); the clamping space (201) is used to accommodate a porous component to be hoisted; and the spacing adjustment assembly is arranged to be able to adjust the spacing between the two clamping assemblies (210).

2. The flip assembly sling according to claim 1, characterized in that: The clamping mechanism (200) is rotatably connected to the bottom of the hanging frame (100) via a flipping square tube (130), and the clamping mechanism (200) comprises a mounting plate (220) for mounting the spacing adjustment assembly, and a rotating shaft (221) extending in a vertical direction is arranged on the mounting plate (220), and the rotating shaft (221) is freely rotatably connected to the flipping square tube (130) so that the mounting plate (220) can rotate with the axis of the rotating shaft (221) as the center of a circle.

3. The flip assembly sling according to claim 1, characterized in that: A limit switch (230) is provided on the clamping mechanism (200), and a limit switch detection plate (240) is provided on each of the two clamping assemblies (210). The limit switch (230) can detect the position of the limit switch detection plate (240) and output a status signal.

4. The flip assembly sling according to claim 1, characterized in that: Each of the clamping assemblies (210) comprises a connecting block (211) and a clamping claw (212) mounted on the connecting block (211), and the clamping claws (212) on the two clamping assemblies (210) are arranged opposite to each other; Preferably, two claws (212) are provided on each of the connecting blocks (211), and the two claws (212) are spaced apart along the second horizontal direction (Y), wherein the second horizontal direction (Y) and the first horizontal direction (X) are perpendicular to each other.

5. The flip assembly hanger according to claim 4, characterized in that: The two claws (212) on each connecting block (211) are arranged to be able to move closer to or farther away from each other along the second horizontal direction (Y).

6. The flip assembly sling according to claim 1, characterized in that: The driving assembly (300) comprises a double-acting cylinder (310), wherein the double-acting cylinder (310) is hinged to the hoisting frame (100), and a telescopic rod (311) of the double-acting cylinder (310) is hinged to a position of the clamping mechanism (200) that deviates from its rotation axis, so that when the telescopic rod (311) of the double-acting cylinder (310) is extended or retracted, it can drive the clamping mechanism (200) to rotate around the rotation axis extending along the first horizontal direction (X).

7. The flip assembly hanger according to claim 6, characterized in that: Two double-acting cylinders (310) are provided, and the two double-acting cylinders (310) are arranged at intervals on the hoisting frame (100).

8. The flip assembly sling according to claim 1, characterized in that: The hanging frame (100) comprises a top support plate (110) and side support plates (120) extending downwardly from both ends thereof; a hanging portion (111) is provided on the top support plate (110) for hanging the hanging frame (100).

9. The flip assembly sling according to claim 1, characterized in that: The spacing adjustment component is a clamping claw cylinder (250), and the clamping component (210) is connected to the output end of the clamping claw cylinder (250).

10. The flip assembly sling according to any one of claims 1 to 9, characterized in that: The hoisting frame (100) is also provided with a protective cover to prevent residues of the porous component from popping out during the hoisting process.

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