Lifting appliance tool and lifting method
By designing the top frame, bottom bracket, and side frame of the lifting fixture, a lifting space is formed, and lifting points are set on the frame. This solves the product deformation problem caused by traditional lifting methods, achieves uniform distribution of lifting force, and improves lifting safety and product reliability.
Patent Information
- Application Number
- CN202511369938.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-24
- Publication Date
- 2025-11-18
AI Technical Summary
Traditional hoisting methods may cause products to deform due to uneven stress or unreasonable hoisting point structure design, affecting the performance and reliability of high-precision products.
Design a lifting fixture including a top frame, a bottom bracket and side frames to form an enclosed lifting space, and set lifting points on the frame to evenly distribute the lifting force through multi-point support, avoiding the lifting points being directly set on the product.
It effectively reduces local deformation of the product during hoisting, improves the safety and reliability of hoisting, and ensures that the product's precision is not compromised.
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Figure CN120964584A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of cargo handling technology, specifically relating to a lifting tool and lifting method. Background Technology
[0002] In today's cutting-edge technology field, a variety of high-performance, high-precision equipment has been designed and developed to meet specific needs. These products are characterized by high integration, light weight, and high precision requirements.
[0003] Traditional hoisting methods typically rely on designing specific lifting points on the product. However, during the hoisting process using traditional methods, factors such as uneven stress and unreasonable lifting point structure design may cause the product to deform, thereby compromising the product's precision and affecting its subsequent performance and reliability. Summary of the Invention
[0004] This application provides a lifting tool and lifting method to address the problem that during the lifting process of existing products, uneven force distribution and unreasonable lifting point structure design may cause product deformation, thereby compromising the product's precision and affecting its subsequent performance and reliability.
[0005] In a first aspect, this application provides a lifting fixture, including: a top frame and a bottom bracket; and a side frame disposed between the top frame and the bottom bracket; wherein the top frame, the bottom bracket, and the side frame enclose a lifting space for placing a product, and the top frame and / or the side frame are provided with lifting points for connecting a lifting system.
[0006] In some embodiments, the side frame includes a plurality of first booms distributed around the central axis of the top frame, one end of each first boom being connected to the top frame and the other end being connected to the bottom bracket.
[0007] In some embodiments, the bottom bracket includes a bottom beam, and the number of first booms is twice that of the bottom beam, with each end of the bottom beam connected to one of the two first booms.
[0008] In some embodiments, the lifting fixture further includes a first bolt assembly, the first boom is provided with a first connecting hole, and the top frame is provided with a second connecting hole corresponding to the first connecting hole; one of the first connecting hole and the second connecting hole is a horizontal oblong hole, and the other is a round hole; the first bolt assembly passes through the first connecting hole and the second connecting hole.
[0009] In some embodiments, the side frame includes multiple second booms distributed around the central axis of the top frame, with one end of each second boom connected to the top frame and the other end used to connect to the product.
[0010] In some embodiments, a height adjustment mechanism is provided between the second boom and the top frame, the height adjustment mechanism being used to adjust the distance between the other end of the second boom and the top frame.
[0011] In some embodiments, the height adjustment mechanism includes: a first pad and a second pad, one side of the first pad abutting against the second boom, and the other side of the first pad having a first inclined surface; one side of the second pad having a second inclined surface corresponding to and conforming to the first inclined surface, and the other side of the second pad abutting against the top frame; The lifting fixture further includes an adjusting bolt, the second boom has a first through hole, the first pad has a second through hole, the second pad has a waist hole, the top frame has a first threaded hole, the adjusting bolt passes through the first through hole, the second through hole, the waist hole, and the first threaded hole, and the adjusting bolt is threadedly engaged with the first threaded hole; the adjusting bolt can rotate to adjust the gap distance between the second boom and the top frame, so that the other end of the second boom moves closer to or further away from the top frame.
[0012] In some embodiments, the lifting fixture further includes a locking bolt, the second boom is provided with a second threaded hole, the locking bolt is threadedly connected to the second threaded hole, one end of the locking bolt abuts against the second pad, and the locking bolt is rotatable relative to the second threaded hole to push the second pad, so that the second pad slides relative to the first pad to change the stacking thickness of the first pad and the second pad.
[0013] In some embodiments, the lifting fixture further includes a second bolt assembly, the second boom is provided with a third connecting hole, and the top frame is provided with a fourth connecting hole corresponding to the third connecting hole; one of the third connecting hole and the fourth connecting hole is a vertical oblong hole, and the other is a round hole; the second bolt assembly passes through the third connecting hole and the fourth connecting hole.
[0014] Secondly, this application provides a hoisting method applied to the hoisting fixture described in the first aspect, comprising the following steps: Connect and assemble the first boom to the top frame; The bottom beam is passed through the square tube located at the bottom of the product, with both ends of the bottom beam protruding from the square tube. The assembly of the first boom and the top frame is hoisted to the top of the product, and the lower end of the first boom is connected to the bottom beam; The lower end of the second boom is connected to the connection structure set at the bottom of the product, and the upper end of the second boom is connected to the top frame through a height adjustment mechanism. The relative position of the second boom and the top frame is adjusted using the height adjustment mechanism, and the height adjustment mechanism is locked after the adjustment is completed. Use a lifting system to connect the lifting points of the lifting tool to lift the lifting tool and product, or use a forklift to lift the top frame to raise the lifting tool and product.
[0015] The technical solutions provided in this application have the following advantages compared with the prior art: The lifting fixture of this application embodiment consists of a top frame, a bottom bracket, and a side frame, forming an enclosed lifting space for placing the product to be lifted. By setting lifting points on the top frame and / or side frames to connect the lifting system, the situation of setting the lifting points on the product is avoided. Through the multi-point support of the product by the top frame, bottom bracket, and side frames, the lifting force is evenly distributed, effectively reducing the deformation caused by excessive local stress on the product. Attached Figure Description
[0016] Figure 1 This application provides an overall structural diagram of a lifting tool for loading products and connecting to a lifting system; Figure 2 This application provides an overall structural diagram of a lifting tooling connection lifting system. Figure 3 A schematic diagram of the connection structure between the first boom and the bottom beam in a lifting fixture provided in this application; Figure 4 A schematic diagram of the connection structure between the first boom and the top frame in a lifting fixture provided in this application; Figure 5 A schematic diagram of the connection structure between the second boom and the product in a lifting tooling provided in this application; Figure 6 A schematic diagram of the cooperative structure of the second boom, height adjustment mechanism, and top frame in a lifting fixture provided in this application; Figure 7 A schematic diagram of the connection structure between the second boom and the top frame in a lifting fixture provided in this application. Explanation of reference numerals in the attached drawings: 1-Lifting tool; 2-Top frame, 21-Second connecting hole, 22-Fourth connecting hole, 23-First threaded hole; 3-Bottom bracket, 31-Bottom beam, 32-Insertion block; 4-Side frame, 41-First boom, 411-First connecting hole, 412-U-groove, 42-Second boom, 421-Third connecting hole, 422-Connecting rod; 5-Height adjustment mechanism, 51-First pad, 52-Second pad, 521-Waist hole, 53-Adjusting bolt, 54-Locking bolt; 6-Pin; 7-Product, 71-Pipe hole, 72-Window groove; 8-Fastening bolt; 9-Lifting system. Detailed Implementation
[0017] To enable those skilled in the art to better understand this application, the technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0018] In the field of cargo handling, traditional methods for lifting large goods usually rely on designing special lifting points on the product. However, this method may cause product deformation due to uneven stress or unreasonable lifting point structure design, thereby compromising the product's precision and affecting its subsequent performance and reliability, which is unacceptable for products with high precision requirements.
[0019] like Figures 1-2 As shown, this application provides a lifting fixture 1, including: a top frame 2 and a bottom bracket 3; a side frame 4 disposed between the top frame 2 and the bottom bracket 3; wherein, the top frame 2, the bottom bracket 3 and the side frame 4 enclose a lifting space for placing a product 7, and the top frame 2 and / or the side frame 4 are provided with lifting points for connecting the lifting system 9.
[0020] It is understood that in this embodiment, the lifting fixture 1 is composed of a top frame 2, a bottom bracket 3, and a side frame 4, forming an enclosed lifting space for placing the product 7 to be lifted. By setting lifting points on the top frame 2 and / or the side frame 4 to connect to the lifting system 9, the situation of setting the lifting points on the product 7 is avoided. The multi-point support of the product 7 by the top frame 2, the bottom bracket 3, and the side frame 4 ensures that the lifting force is evenly distributed, effectively reducing deformation caused by excessive local stress on the product 7. During use, the top frame 2 corresponds to the top side of the product 7, the bottom bracket 3 corresponds to the bottom side of the product 7, and the side frame 4 corresponds to the periphery of the product 7.
[0021] In some embodiments, the side frame 4 includes multiple first booms 41, which are distributed around the central axis of the top frame 2. One end of each first boom 41 is connected to the top frame 2, and the other end is connected to the bottom bracket 3. Optionally, as... Figure 3As shown, the lifting fixture 1 in this embodiment also includes a pin 6. The other end of the first lifting arm 41 is provided with a U-shaped groove 412 and a first pin hole that passes through the U-shaped groove 412. Both ends of the bottom beam 31 are provided with insert blocks 32 corresponding to the U-shaped groove 412, and the insert blocks 32 are provided with a second pin hole corresponding to the first pin hole. The insert blocks 32 are embedded in the U-shaped groove 412, and the first pin hole and the second pin hole are aligned to be coaxial. The pin 6 passes through the first pin hole and the second pin hole so that the first lifting arm 41 is connected to the bottom beam 31.
[0022] Optionally, multiple first booms 41 are evenly distributed around the central axis of the top frame 2. Optionally, the product 7 has a front side and a rear side relative to the front side, with half of the first booms 41 disposed on the side of the lifting fixture 1 corresponding to the front side of the product 7, and the other half of the first booms 41 disposed on the side of the lifting fixture 1 corresponding to the rear side of the product 7. In some embodiments, four first booms 41 are provided, with two first booms 41 disposed on the side of the lifting fixture 1 corresponding to the front side of the product 7 and connected to the top frame 2 and the bottom bracket 3; and two first booms 41 disposed on the side of the lifting fixture 1 corresponding to the rear side of the product 7 and connected to the top frame 2 and the bottom bracket 3. Furthermore, the four first booms 41 are evenly arranged around the central axis of the top bracket.
[0023] Understandably, the multiple first booms 41 are distributed around the central axis of the top frame 2. This layout helps to evenly distribute the forces generated during hoisting, avoiding deformation of the product 7 or tooling due to excessive local stress. Furthermore, through the evenly distributed first booms 41, the hoisting force can be more evenly transmitted to the bottom bracket 3 and the product 7, reducing the risk of local stress concentration and thus improving the safety and reliability of the hoisting.
[0024] In some embodiments, the bottom bracket 3 includes a bottom beam 31, and the number of first booms 41 is twice that of the bottom beam 31. The two ends of the bottom beam 31 are respectively connected to two first booms 41.
[0025] Optionally, four first booms 41 and two base beams 31 are provided, with the two base beams 31 parallel to each other. One end of each base beam 31 is connected to a first boom 41 located on the side of the lifting fixture 1 corresponding to the front side of the product 7, and the other end of each base beam 31 is connected to a first boom 41 located on the side of the lifting fixture 1 corresponding to the rear side of the product 7. In this embodiment, the two base beams 31 are parallel to each other. This arrangement helps maintain the overall balance of the lifting fixture 1, ensuring that the product 7 will not be displaced or deformed during lifting due to the tilting or twisting of the base beams 31. The two ends of each base beam 31 are connected to the front and rear first booms 41, respectively. This connection method allows the lifting force to be evenly transmitted to the support points at the front and rear of the product 7, further enhancing the stability of the lifting.
[0026] Preferably, a square tube is provided on the bottom side of the product 7, and the bottom beam 31 passes through the square tube with both ends exposed. The exposed ends of the bottom beam 31 are respectively connected to the two first booms 41.
[0027] like Figure 4 As shown, in some embodiments, the lifting fixture 1 further includes a first bolt assembly, the first boom 41 is provided with a first connecting hole 411, and the top frame 2 is provided with a second connecting hole 21 corresponding to the first connecting hole 411; one of the first connecting hole 411 and the second connecting hole 21 is a horizontal oblong hole, and the other is a round hole; the first bolt assembly passes through the first connecting hole 411 and the second connecting hole 21.
[0028] Understandably, the design of the first connecting hole 411 and the second connecting hole 21 allows for fine-tuning in the horizontal direction between the first boom 41 and the top frame 2, ensuring that the lifting fixture 1 can accurately mate with the product 7. The first bolt assembly passes through the first connecting hole 411 and the second connecting hole 21, and the tightening action of the bolts ensures a secure and reliable connection between the first boom 41 and the top frame 2. Specifically, the design of the horizontal oblong hole allows for fine-tuning in the horizontal direction when the first boom 41 is connected to the top frame 2, ensuring precise alignment of the lifting fixture 1 and the product 7. After the lifting fixture 1 and the product 7 are aligned, the tightening action of the first bolt assembly ensures a secure and reliable connection between the first boom 41 and the top frame 2.
[0029] Optionally, the first bolt assembly includes a first bolt and a first nut. The first boom 41 is fastened to the top frame 2 by the first bolt passing through the first connecting hole 411 and the second connecting hole 21, and by the threaded connection between the first nut and the first bolt.
[0030] like Figure 1 and Figure 2 As shown, in some embodiments, the side frame 4 includes multiple second booms 42, which are distributed around the central axis of the top frame 2. One end of each second boom 42 is connected to the top frame 2, and the other end is used to connect to the product 7. Optionally, the top frame 2 is rectangular, and four second booms 42 are provided, with the four second booms 42 respectively connected to the four corners of the top frame 2.
[0031] In this embodiment, by introducing the second boom 42, the lifting fixture 1 can not only be used to lift the product 7, but also, when there is a connecting structure at the bottom of the product 7, the second boom 42 can be connected to the bottom of the product 7 to provide additional support, enhance the stability during the lifting process, and reduce the risk of swaying and tilting of the product 7 during the lifting process.
[0032] like Figure 5As shown, in some embodiments, the lifting fixture 1 further includes a fastening bolt 8. A connecting rod 422 extending towards the lifting space is provided at the other end of the second boom 42, and a third threaded hole is provided through the end of the connecting rod 422 away from the second boom 42. A pipe hole 71 for inserting the connecting rod 422 is provided on the bottom side of the product 7 at a position corresponding to the other end of the second boom 42. Window slots 72 are provided at the positions of the two openings of the pipe hole 71 corresponding to the third threaded hole. The fastening bolt 8 passes through the window slots 72 and the third threaded hole, and the fastening bolt 8 is threadedly engaged with the third threaded hole. Thus, the second boom 42 is limited in the direction of movement away from the product 7. That is, when the second boom 42 moves in the direction of movement away from the product 7, the fastening bolt 8 abuts against the inner wall of the window slot 72, preventing the second boom 42 from separating from the product 7.
[0033] like Figure 6 As shown, in some embodiments, a height adjustment mechanism 5 is provided between the second boom 42 and the top frame 2. The height adjustment mechanism 5 is used to adjust the distance between the other end of the second boom 42 and the top frame 2. Through the height adjustment mechanism 5, the lifting fixture 1 can adapt to products 7 of different heights, improving the versatility and flexibility of the lifting fixture 1 and reducing the risk of swaying and tilting caused by height mismatch.
[0034] In some embodiments, the height adjustment mechanism 5 includes: a first pad 51 and a second pad 52. One side of the first pad 51 abuts against the second boom 42, and the other side of the first pad 51 is provided with a first inclined surface. One side of the second pad 52 is provided with a second inclined surface corresponding to the first inclined surface, and the other side of the second pad 52 abuts against the top frame 2. The lifting fixture 1 also includes an adjusting bolt 53. The second boom 42 is provided with a first through hole, the first pad 51 is provided with a second through hole, the second pad 52 is provided with a waist hole 521, and the top frame 2 is provided with a first threaded hole 23. The adjusting bolt 53 passes through the first through hole, the second through hole, the waist hole 521, and the first threaded hole 23, and the adjusting bolt 53 is threadedly engaged with the first threaded hole 23. The adjusting bolt 53 can rotate to adjust the gap distance between the second boom 42 and the top frame 2, so that the other end of the second boom 42 is closer to or farther away from the top frame 2.
[0035] Optionally, the adjusting bolt 53 is inserted in the height direction through the first through hole, the second through hole, the waist hole 521, and the first threaded hole 23. Thus, by rotating the adjusting bolt 53, the amount of movement in the height direction between the second boom 42 and the top frame 2 can be increased or decreased, providing a prerequisite for the movement of the second pad 52 relative to the first pad 51.
[0036] It is understood that the first pad 51 has a first inclined surface on one side, and the second pad 52 has a second inclined surface on one side, and the two are in contact. When the height needs to be adjusted, the second pad 52 is pushed, causing the second pad 52 and the first pad 51 to slide along the first inclined surface and the second inclined surface, thereby changing the superposition height of the first pad 51 and the second pad 52 in the height direction, and realizing the height adjustment of the second boom 42. The adjusting bolt 53 is sequentially inserted into the first through hole of the second boom 42, the second through hole of the first pad 51, the waist hole 521 of the second pad 52, and the first threaded hole 23 of the top frame 2. It cooperates with the first threaded hole 23. When the adjusting bolt 53 is screwed into the first threaded hole 23, the rotational movement will cause the second pad 52 to be squeezed, thereby translating along the direction of the first inclined plane and the second inclined plane, so that the superposition height of the first pad 51 and the second pad 52 is reduced. However, when the adjusting bolt 53 is screwed out in a direction away from the first threaded hole 23, the rotation will not directly change the relative position of the first pad 51 and the second pad 52, but will provide more space for the relative sliding of the first pad 51 and the second pad 52, so as to push the second pad 52.
[0037] In some embodiments, the lifting fixture 1 further includes a locking bolt 54, the second lifting arm 42 is provided with a second threaded hole, the locking bolt 54 is threadedly connected to the second threaded hole, one end of the locking bolt 54 abuts against the second pad 52, and the locking bolt 54 can rotate relative to the second threaded hole to push the second pad 52, so that the second pad 52 slides relative to the first pad 51 to change the stacking thickness of the first pad 51 and the second pad 52.
[0038] It is understood that the first pad 51 is provided with a first inclined surface, and the second pad 52 is provided with a second inclined surface. The first inclined surface and the second inclined surface are in contact. The first pad 51 and the second pad 52 change their relative positions by sliding the first inclined surface and the second inclined surface. When the first pad 51 and the second pad 52 change their relative positions by sliding the first inclined surface and the second inclined surface, the superposition height of the first pad 51 and the second pad 52 in the height direction changes. This part of the changed height is the adjustable height of the height adjustment mechanism 5. It should be explained that, in this embodiment, the second pad 52 is a movable part in the height adjustment mechanism 5 that adjusts the relative position between the second boom 42 and the top frame 2. Assuming that pushing the second pad 52 from one side to the other side will increase the stacking thickness of the first pad 51 and the second pad 52, the locking bolt 54 should abut against one side of the second pad 52. That is, the locking bolt 54 can be rotated to push the second pad 52, and it can also limit the sliding of the second pad 52 towards its first side under the squeezing force of the first pad 51 and the top frame 2 in a static state.
[0039] like Figure 7As shown, in some embodiments, the lifting fixture 1 further includes a second bolt assembly. The second boom 42 is provided with a third connecting hole 421, and the top frame 2 is provided with a fourth connecting hole 22 corresponding to the third connecting hole 421. One of the third connecting hole 421 and the fourth connecting hole 22 is a vertical oblong hole, and the other is a round hole. The second bolt assembly passes through the third connecting hole 421 and the fourth connecting hole 22. It can be understood that the third connecting hole 421 and the fourth connecting hole 22 provide variables for the vertical movement of the second boom 42 relative to the top frame 2, and these variables correspond to the height variables provided by the height adjustment mechanism 5.
[0040] This application also provides a lifting method applied to the above-mentioned lifting fixture, comprising the following steps: S100, Connect and assemble the first boom and the top frame; S200. Pass the bottom beam through the square tube located at the bottom of the product, so that both ends of the bottom beam protrude from the square tube respectively; S300. Lift the assembly of the first boom and the top frame to above the product, and connect the lower end of the first boom to the bottom beam; S400. Connect the lower end of the second boom to the connection structure set at the bottom of the product, and connect the upper end of the second boom to the top frame through a height adjustment mechanism. S500: Adjust the relative position of the second boom and the top frame using the height adjustment mechanism, and lock the height adjustment mechanism after adjustment; S600. Use a lifting system to connect the lifting points of the lifting fixture to lift the lifting fixture and product, or use a forklift to lift the top frame to raise the lifting fixture and product.
[0041] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.
[0042] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A lifting tool, characterized in that, include: Top frame and bottom bracket; A side frame is disposed between the top frame and the bottom bracket; The top frame, bottom bracket, and side frame together form a hoisting space for placing products, and the top frame and / or the side frame are provided with lifting points for connecting the hoisting system.
2. The lifting fixture according to claim 1, characterized in that, The side frame includes multiple first booms, which are distributed around the central axis of the top frame. One end of each first boom is connected to the top frame, and the other end is connected to the bottom bracket.
3. The lifting fixture according to claim 2, characterized in that, The bottom bracket includes a bottom beam, and the number of first booms is twice that of the bottom beam. The two ends of the bottom beam are respectively connected to two of the first booms.
4. The lifting fixture according to claim 2, characterized in that, The lifting tooling also includes a first bolt assembly. The first boom is provided with a first connecting hole, and the top frame is provided with a second connecting hole corresponding to the first connecting hole. One of the first connecting hole and the second connecting hole is a horizontal oblong hole, and the other is a round hole. The first bolt assembly passes through the first connecting hole and the second connecting hole.
5. The lifting fixture according to claim 2, characterized in that, The side frame includes multiple second booms, which are distributed around the central axis of the top frame. One end of each second boom is connected to the top frame, and the other end is used to connect to the product.
6. The lifting fixture according to claim 5, characterized in that, A height adjustment mechanism is provided between the second boom and the top frame, and the height adjustment mechanism is used to adjust the distance between the other end of the second boom and the top frame.
7. The lifting fixture according to claim 6, characterized in that, The height adjustment mechanism includes: a first pad and a second pad, one side of the first pad abutting against the second boom, and the other side of the first pad having a first inclined surface; one side of the second pad has a second inclined surface corresponding to and conforming to the first inclined surface, and the other side of the second pad abutting against the top frame; The lifting fixture further includes an adjusting bolt, the second boom has a first through hole, the first pad has a second through hole, the second pad has a waist hole, the top frame has a first threaded hole, the adjusting bolt passes through the first through hole, the second through hole, the waist hole, and the first threaded hole, and the adjusting bolt is threadedly engaged with the first threaded hole; the adjusting bolt can rotate to adjust the gap distance between the second boom and the top frame, so that the other end of the second boom moves closer to or further away from the top frame.
8. The lifting fixture according to claim 7, characterized in that, The lifting tooling also includes a locking bolt. The second boom is provided with a second threaded hole. The locking bolt is threadedly connected to the second threaded hole. One end of the locking bolt abuts against the second pad. The locking bolt can rotate relative to the second threaded hole to push the second pad, so that the second pad slides relative to the first pad, thereby changing the stacking thickness of the first pad and the second pad.
9. The lifting fixture according to claim 5, characterized in that, The lifting tooling also includes a second bolt assembly. The second boom is provided with a third connecting hole, and the top frame is provided with a fourth connecting hole corresponding to the third connecting hole. One of the third connecting hole and the fourth connecting hole is a vertical oblong hole, and the other is a round hole. The second bolt assembly passes through the third connecting hole and the fourth connecting hole.
10. A hoisting method, characterized in that, The lifting fixture described in claim 6 is applied to the following steps: Connect and assemble the first boom to the top frame; The bottom beam is passed through the square tube located at the bottom of the product, with both ends of the bottom beam protruding from the square tube. The assembly of the first boom and the top frame is hoisted to above the product, and the lower end of the first boom is connected to the bottom beam; The lower end of the second boom is connected to the connection structure set at the bottom of the product, and the upper end of the second boom is connected to the top frame through a height adjustment mechanism; The relative position of the second boom and the top frame is adjusted by the height adjustment mechanism, and the height adjustment mechanism is locked after the adjustment is completed. Use a lifting system to connect the lifting points of the lifting tool to lift the lifting tool and product, or use a forklift to lift the top frame to raise the lifting tool and product.