A lifting tool for a carriage roof

Abstract

This utility model discloses a lifting fixture for a car roof panel. Its structure, belonging to the field of car body processing equipment, includes a lifting ring, an assembly rod, a first universal joint, a first electrically controlled telescopic rod, a first support rod, a lifting plate, a second universal joint, a second support rod, a lifting rope, an electric hoist, and a second electrically controlled telescopic rod. The assembly rod, which can be extended and retracted at the end of the first support rod via the second electrically controlled telescopic rod, has a lifting ring on it for the electric hoist's lifting rope to pass through before lifting the car roof panel. During use, the length of the assembly rod can be adjusted according to the weight distribution or size of the car body, using a lever principle to balance the weight. This allows the fixture to accommodate car roof panels of various specifications and to stably lift car roof panels with uneven weight distribution. The telescopically adjustable assembly rod is further reinforced by a universal joint connecting it to the first electrically controlled telescopic rod, ensuring lifting stability and ease of use.

Description

Technical Field

[0001] This utility model belongs to the field of carriage processing equipment, and specifically relates to a lifting fixture for carriage roof. Background Technology

[0002] During the manufacturing process, the carriage is often assembled by disassembling and then piecing together various parts. The assembly process typically proceeds from bottom to top: first, the floor plate is assembled; then the side plates are welded to the floor plate; and finally, the roof plate is welded to the side plates. To ensure the integrity of the roof plate, it is fabricated as a single piece and then hoisted onto the side plates for assembly and welding. Due to the weight of the roof plate, lifting equipment such as gantry cranes is often used to assist in the hoisting. Traditional lifting equipment only has simple hooks, which can cause the roof plate to... During hoisting, it is difficult to maintain stability, and the hoisting is prone to swaying and tilting, which can even lead to the danger of falling in severe cases. Therefore, it is necessary to use tooling to assist in hoisting. However, when using existing technology, traditional tooling simply relies on the connection between the fixed frame extension and the roof of the carriage. When the roof of the carriage has uneven weight distribution or the center of gravity is difficult to determine due to irregular shape, swaying or tilting is still likely to occur after hoisting. Moreover, it cannot be adjusted when hoisting roof panels of different specifications, making it difficult to adapt to the hoisting of roof panels of different specifications, causing inconvenience. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To overcome the shortcomings of existing technologies, a lifting fixture for the roof of a train carriage is proposed. This solves the problem that traditional fixtures simply rely on a fixed frame extension to connect with the roof of the train carriage. When the roof of the train carriage has an uneven weight distribution or the center of gravity is difficult to determine due to its irregular shape, it is still easy to sway or tilt after lifting. Furthermore, it cannot be adjusted when lifting roofs of different specifications, making it difficult to adapt to the lifting of roofs of different specifications and causing inconvenience.

[0005] (II) Technical Solution

[0006] This utility model is achieved through the following technical solution: This utility model proposes a lifting fixture for a car roof panel, the structure of which includes a lifting ring, an assembly rod, a first universal joint, a first electrically controlled telescopic rod, a first support rod, a lifting plate, a second universal joint, a second support rod, a lifting rope, an electric hoist, and a second electrically controlled telescopic rod. Two first support rods are provided and arranged parallel to each other. The second support rod is fixed between the two first support rods. A lifting plate is also fixed in the middle between the two first support rods. The lifting plate is used to connect with lifting equipment. Two... The second electrically controlled telescopic rod, two of which pass through both ends of the first frame rod, has an assembly rod fixed to its side. The assembly rod is equipped with a lifting ring and a first universal joint. An electric hoist is mounted on the assembly rod, the first frame rod, or the second frame rod. The electric hoist is used for raising and lowering the lifting rope. One end of the lifting rope passes through the lifting ring to connect to the object being lifted. A second universal joint is mounted on the first frame rod, the lifting plate, or the second frame rod. The first universal joint and the second universal joint are connected by the first electrically controlled telescopic rod.

[0007] Furthermore, both the first and second electrically controlled telescopic rods are electric push rods, pneumatic cylinders, or hydraulic cylinders.

[0008] Furthermore, it also includes a reinforcing rod, one end of which is fixedly connected to the end of the first frame rod, and the other end of which is fixedly connected to the hoisting plate.

[0009] Furthermore, there are four electric hoists, each equipped with an independent lifting rope. The lifting ropes of the four electric hoists pass through the lifting rings on both sides of the two first frame rods for connecting with the object being lifted.

[0010] Furthermore, the lifting ring is provided with a ring lock, which is used to lock the ring structure of the lifting ring.

[0011] Furthermore, the lifting ring assembly is equipped with a pressure sensor and a pressure plate. The pressure plate is fixedly connected to the lifting ring, and the pressure sensor is mounted on the assembly rod. The pressure sensor is used to detect the pressure on the pressure plate.

[0012] Furthermore, the assembly rod is provided with a through hole for assembling the lifting ring and the first universal joint.

[0013] Furthermore, the first universal joint includes a hinge groove, a first main rod, a first hinge joint, a limiting ring, and a limiting ball. One end of the first main rod passes through the assembly rod from top to bottom and is fixedly connected to the limiting ball. A limiting ring is sleeved on the first main rod on the side of the assembly rod away from the limiting ball. The other end of the first main rod is provided with a hinge groove. The first hinge joint is hingedly assembled in the hinge groove. The first hinge joint is fixedly connected to the side of the first electrically controlled telescopic rod away from the second universal joint.

[0014] Furthermore, the first universal joint also includes a first threaded structure, which is disposed between the limiting ring and the first main rod, and is used for positioning and locking the limiting ring on the first main rod.

[0015] Furthermore, the lifting plate is provided with lifting holes for lifting.

[0016] Furthermore, the second universal joint includes a second hinge joint, a spacer ring, a top cover plate, a docking ring, and a second main rod. One end of the second main rod is fixedly connected to the top cover plate, and the other end of the second main rod is fitted with a spacer ring and a docking ring and then fixedly connected to the lifting plate. The spacer ring is used to separate multiple docking rings and to separate the docking rings from the lifting plate. One end of the second hinge joint is hinged to the docking ring, and the other end of the second hinge joint is fixedly connected to the side of the first electrically controlled telescopic rod away from the first universal joint.

[0017] Furthermore, the second universal joint also includes an unlocking pull plate, an elastic element, a locking rod, a second threaded structure, and a locking groove. The locking groove is located at the bottom of the connection between the lifting plate and the second main rod. A second threaded structure is provided between the lower side end face of the second main rod and the lifting plate. The second threaded structure is used to lock the second main rod and the lifting plate. One end of the locking rod fits into the locking groove, and the other end of the locking rod passes through the second main rod and the top cover plate and is fixedly connected to the unlocking pull plate. The elastic element is assembled between the unlocking pull plate and the top cover plate. The elastic element is used to make the unlocking pull plate fit against the top cover plate.

[0018] Furthermore, the elastic element is a tension spring.

[0019] (III) Beneficial Effects

[0020] One of the above technical solutions has the following advantages or beneficial effects:

[0021] The equipment features an assembly rod that can extend and retract at the end of the first frame rod via a second electrically controlled telescopic rod. This assembly rod has lifting rings for the electric hoist's lifting rope to pass through, allowing for the hoisting of the car roof. During operation, the length of the assembly rod can be adjusted according to the weight distribution or size of the car, using leverage to balance the weight. This allows the equipment to accommodate car roofs of various sizes and weights, ensuring stable hoisting. The adjustable assembly rod is also reinforced with the first electrically controlled telescopic rod via a universal joint, guaranteeing hoisting stability.

[0022] When there is a large difference in hoisting height or the size of the carriage roof is similar to that of the tooling, the connection between the hoisting rope and the carriage roof is too vertical. In this case, the hoisting rope and the carriage roof can be adjusted by extending the assembly rod to make a certain angle between the hoisting rope and the carriage roof. Even if the hoisting rope exerts force on the outside and top of the carriage roof, the carriage roof will be stabilized by the opposing tension when it is about to sway, thus making the hoisting more stable and less prone to swaying. Attached Figure Description

[0023] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This utility model Figure 1 A magnified structural diagram of A in the middle;

[0026] Figure 3 This utility model Figure 1 A magnified structural diagram of B in the diagram;

[0027] Figure 4 This is a schematic cross-sectional view of the first frame rod and the assembly rod after they are combined according to this utility model.

[0028] Figure 5 This utility model Figure 4 A magnified structural diagram of C;

[0029] Figure 6 This is a cross-sectional structural diagram of the second universal joint of this utility model assembled on a lifting plate;

[0030] In the diagram: Lifting ring-1, Assembly rod-2, First universal joint-3, First electrically controlled telescopic rod-4, First support rod-5, Lifting plate-6, Second universal joint-7, Second support rod-8, Lifting rope-9, Electric hoist-10, Second electrically controlled telescopic rod-11, Reinforcing rod-12, Ring lock-101, Pressure sensor-102, Pressure plate-103, Through hole-201, Hinge groove-301, First main rod-302, First hinge joint-303, Limiting ring-304, Limiting ball-305, First threaded structure-306, Lifting hole-601, Second hinge joint-701, Spacer ring-702, Top cover plate-703, Butt ring-704, Second main rod-705, Unlocking pull plate-706, Elastic element-707, Locking rod-708, Second threaded structure-709, Lock groove-710. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0032] Example 1:

[0033] This utility model provides a lifting fixture for a car roof panel: its structure includes a lifting ring 1, an assembly rod 2, a first universal joint 3, a first electrically controlled telescopic rod 4, a first support rod 5, a lifting plate 6, a second universal joint 7, a second support rod 8, a lifting rope 9, an electric hoist 10, and a second electrically controlled telescopic rod 11. Two first support rods 5 are provided and arranged parallel to each other. The second support rod 8 is fixed between the two first support rods 5. A lifting plate 6 is also fixed in the middle between the two first support rods 5. The lifting plate 6 is used to connect with lifting equipment. Two second electrically controlled telescopic rods 11 are assembled inside the first support rod 5. The second electrically controlled telescopic rod 11 passes through both ends of the first frame rod 5. An assembly rod 2 is fixed to the side of the second electrically controlled telescopic rod 11 that passes through the first frame rod 5. A lifting ring 1 and a first universal joint 3 are mounted on the assembly rod 2. An electric hoist 10 is mounted on the assembly rod 2, the first frame rod 5, or the second frame rod 8. The electric hoist 10 is used for raising and lowering the lifting rope 9. One end of the lifting rope 9 passes through the lifting ring 1 to connect to the object being lifted. A second universal joint 7 is mounted on the first frame rod 5, the lifting plate 6, or the second frame rod 8. The first universal joint 3 and the second universal joint 7 are connected by the first electrically controlled telescopic rod 4.

[0034] The first electrically controlled telescopic rod 4 and the second electrically controlled telescopic rod 11 are both electric push rods, pneumatic cylinders, or hydraulic cylinders.

[0035] The electric hoist 10 is provided in four parts, and each of the four electric hoists 10 is equipped with an independent lifting rope 9. The lifting ropes 9 of the four electric hoists 10 pass through the lifting rings 1 on both sides of the two first frame rods 5 for connecting with the object being lifted.

[0036] The assembly rod 2 is provided with a through hole 201, which is used for assembling the lifting ring 1 and the first universal joint 3.

[0037] The hoisting plate 6 is provided with a hoisting hole 601 for hoisting.

[0038] During use, the electric hoist 10 lowers the lifting rope 9 to fix the four sides of the car roof. When the specifications of the car roof are close to the current tooling, the second electric telescopic rod 11 can drive the assembly rod 2 to extend and adjust the position of the lifting ring 1, that is, adjust the passage position of the lifting rope 9 after passing through the tooling and connecting with the car roof, so that the lifting rope 9 forms an obtuse angle after connecting with the car roof, that is, it tilts outward and upward on the car roof. When the car roof is about to shake, it will be stabilized by the opposing tension, thus making the hoisting more stable and less prone to shaking.

[0039] When the weight of the roof panel is uneven due to structural reasons, the second electrically controlled telescopic rod 11 can drive the corresponding (usually opposite) assembly rod 2 to extend. During adjustment, the corresponding electric hoist 10 also releases the hoisting rope 9 to balance the lifting point. After the corresponding assembly rod 2 extends, due to the lever principle, it will pry the assembly rod 2 on the side of the weight, thereby adjusting the balance at the tooling lifting plate 6. Even when the tooling is lifted, it can be better balanced, achieving double balance lifting of the center of gravity and structure, and ensuring the stability of the lifting.

[0040] Furthermore, when the assembly rod 2 of the equipment is adjusted, the first electrically controlled telescopic rod 4, which is assembled through the first universal joint 3 and the second universal joint 7, will also swing and extend in coordination with the adjustment of the assembly rod 2, so that the assembly rod 2 can maintain the reinforced connection of the first electrically controlled telescopic rod 4 and ensure the stability of the structure.

[0041] Example 2:

[0042] Compared to Embodiment 1, the tooling in this embodiment also includes a reinforcing rod 12, one end of which is fixedly connected to the end of the first support rod 5, and the other end of which is fixedly connected to the lifting plate 6.

[0043] In use, the stability of the lifting plate 6 and the end of the first support rod 5 can be increased by the reinforcing rod 12, further ensuring the stability of the structure, while the rest of the structure and effect remain unchanged.

[0044] Example 3:

[0045] Compared to the previous embodiments, the lifting ring 1 in this embodiment is provided with a ring lock 101, which is used to lock the ring structure of the lifting ring 1.

[0046] When in use, the lifting ring 1 can be disassembled and replaced through the ring lock 101 for easy maintenance and use, while the rest of the structure and effect remain unchanged.

[0047] Example 4:

[0048] Compared to the previous embodiments, in this embodiment, the lifting ring 1 is provided with a pressure sensor 102 and a pressure plate 103. The pressure plate 103 is fixedly connected to the lifting ring 1, and the pressure sensor 102 is mounted on the assembly rod 2. The pressure sensor 102 is used to detect the pressure on the pressure plate 103.

[0049] When in use, the pressure sensor 102 will detect the force on the lifting ring 1 during hoisting, so that the equipment can automatically control the extension and retraction of the assembly rod 2 by setting the fixed force difference, which is convenient and quick, while the rest of the structure and effect remain unchanged.

[0050] Example 5:

[0051] Compared to the previous embodiments, in this embodiment, the first universal joint 3 includes a hinge groove 301, a first main rod 302, a first hinge joint 303, a limiting ring 304, and a limiting ball 305. One end of the first main rod 302 passes through the assembly rod 2 from top to bottom and is fixedly connected to the limiting ball 305. The limiting ring 304 is sleeved on the first main rod 302 on the side of the assembly rod 2 away from the limiting ball 305. The other end of the first main rod 302 is provided with a hinge groove 301. The first hinge joint 303 is hingedly assembled in the hinge groove 301. The first hinge joint 303 is fixedly connected to the side of the first electrically controlled telescopic rod 4 away from the second universal joint 7.

[0052] Among them, the limiting ball 305 is a sphere, and the limiting ring 304 is a spherical ring with a through hole in the middle. The minimum distance between the limiting ball 305 and the limiting ring 304 is greater than the height of the assembly rod 2, so that the rotation of the first universal joint 3 relative to the assembly rod 2 is smoother.

[0053] The first universal joint 3 further includes a first threaded structure 306, which is disposed between the limiting ring 304 and the first main rod 302. The first threaded structure 306 is used for positioning and locking the limiting ring 304 on the first main rod 302.

[0054] In use, when the first electrically controlled telescopic rod 4 needs to adjust its connection position with the assembly rod 2 due to the extension and retraction of the assembly rod 2, the hinge between the first main rod 302 and the first hinge joint 303 allows the first electrically controlled telescopic rod 4 to swing up and down. The first main rod 302 is mounted through the assembly rod 2, allowing the first electrically controlled telescopic rod 4 to swing left and right, facilitating the adjustment of the position of the first electrically controlled telescopic rod 4. When maintenance of the first universal joint 3 is required, simply disconnect the hinge between the first main rod 302 and the first hinge joint 303, and then remove the limit ring 304 to remove the first main rod 302 from the assembly rod 2 for easy maintenance and replacement. The rest of the structure and effect remain unchanged.

[0055] Example 6:

[0056] Compared to the previous embodiments, in this embodiment, the second universal joint 7 includes a second hinge joint 701, a spacer ring 702, a top cover plate 703, a docking ring 704, and a second main rod 705. One end of the second main rod 705 is fixedly connected to the top cover plate 703, and the other end of the second main rod 705 is fitted with the spacer ring 702 and the docking ring 704 and then fixedly connected to the lifting plate 6. The spacer ring 702 is used to separate multiple docking rings 704 and to separate the docking rings 704 from the lifting plate 6. One end of the second hinge joint 701 is hinged to the docking ring 704, and the other end of the second hinge joint 701 is fixedly connected to the side of the first electrically controlled telescopic rod 4 away from the first universal joint 3.

[0057] The second universal joint 7 further includes an unlocking pull plate 706, an elastic element 707, a locking rod 708, a second threaded structure 709, and a locking groove 710. The locking groove 710 is located at the bottom of the connection between the lifting plate 6 and the second main rod 705. The second threaded structure 709 is provided between the lower side end face of the second main rod 705 and the lifting plate 6. The second threaded structure 709 is used to lock the second main rod 705 and the lifting plate 6. One end of the locking rod 708 fits into the locking groove 710, and the other end of the locking rod 708 passes through the second main rod 705 and the top cover plate 703 and is fixedly connected to the unlocking pull plate 706. The elastic element 707 is assembled between the unlocking pull plate 706 and the top cover plate 703. The elastic element 707 is used to make the unlocking pull plate 706 fit against the top cover plate 703.

[0058] The elastic element 707 is a tension spring.

[0059] In use, when the first electrically controlled telescopic rod 4 needs to be adjusted to a position away from the assembly rod 2 due to the extension and retraction of the assembly rod 2, the hinge of the second hinge joint 701 and the docking ring 704 allows the first electrically controlled telescopic rod 4 to swing up and down. The docking ring 704, sleeved on the second main rod 705, allows the first electrically controlled telescopic rod 4 to swing left and right, facilitating the adjustment of the position of the first electrically controlled telescopic rod 4. The design of the locking rod 708 pin being inserted in the locking groove 710 prevents the second main rod 705 from rotating arbitrarily. When maintenance of the second universal joint 7 is required, simply pull the unlocking pull plate 706 to disengage the locking rod 708 from the locking groove 710. Then, the top cover plate 703 drives the second main rod 705 to rotate and unlock. Finally, the spacer ring 702 and the docking ring 704 sleeved on the second main rod 705 can be removed in sequence, which is convenient and quick.

[0060] The structures of the first universal joint 3 and the second universal joint 7 are compatible.

[0061] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0062] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0063] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0064] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lifting fixture for a carriage roof panel, characterized in that: The system includes a lifting ring (1), an assembly rod (2), a first universal joint (3), a first electrically controlled telescopic rod (4), a first support rod (5), a lifting plate (6), a second universal joint (7), a second support rod (8), a lifting rope (9), an electric hoist (10), and a second electrically controlled telescopic rod (11). The first support rod (5) consists of two parallel rods. The second support rod (8) is fixed between the two first support rods (5). A lifting plate (6) is fixed in the middle between the two first support rods (5). The lifting plate (6) is used to connect with the lifting equipment. Two second electrically controlled telescopic rods (11) are assembled inside the first support rod (5). The two second electrically controlled telescopic rods (11) are respectively... The first frame rod (5) is not penetrated through both ends. The second electrically controlled telescopic rod (11) is fixed to the side of the first frame rod (5). The assembly rod (2) is equipped with a lifting ring (1) and a first universal joint (3). An electric hoist (10) is equipped on the assembly rod (2), the first frame rod (5), or the second frame rod (8). The electric hoist (10) is used for raising and lowering the hoisting rope (9). One end of the hoisting rope (9) passes through the lifting ring (1) to connect the hoisted object. A second universal joint (7) is equipped on the first frame rod (5), the hoisting plate (6), or the second frame rod (8). The first universal joint (3) and the second universal joint (7) are connected by the first electrically controlled telescopic rod (4).

2. The lifting fixture for a carriage roof as described in claim 1, characterized in that: It also includes a reinforcing rod (12), one end of which is fixedly connected to the end of the first support rod (5), and the other end of which is fixedly connected to the hoisting plate (6).

3. A lifting fixture for a carriage roof as described in claim 1 or 2, characterized in that: The electric hoist (10) is provided in four parts, and each of the four electric hoists (10) is equipped with an independent lifting rope (9). The lifting rope (9) of the four electric hoists (10) passes through the lifting rings (1) on both sides of the two first frame rods (5) for connecting with the object being lifted.

4. A lifting fixture for a carriage roof as described in claim 1 or 2, characterized in that: The lifting ring (1) is provided with a ring lock (101), which is used to lock the ring structure of the lifting ring (1).

5. A lifting fixture for a carriage roof as described in claim 1 or 2, characterized in that: The lifting ring (1) is equipped with a pressure sensor (102) and a pressure plate (103). The pressure plate (103) is fixedly connected to the lifting ring (1). The pressure sensor (102) is mounted on the assembly rod (2). The pressure sensor (102) is used to detect the pressure on the pressure plate (103).

6. A lifting fixture for a carriage roof as described in claim 1 or 2, characterized in that: The assembly rod (2) is provided with a through hole (201), which is used for assembling the lifting ring (1) and the first universal joint (3).

7. The lifting fixture for a carriage roof as described in claim 1, characterized in that: The first universal joint (3) includes a hinge groove (301), a first main rod (302), a first hinge joint (303), a limiting ring (304), and a limiting ball (305). One end of the first main rod (302) passes through the assembly rod (2) from top to bottom and is fixedly connected to the limiting ball (305). The first main rod (302) on the side of the assembly rod (2) away from the limiting ball (305) is fitted with a limiting ring (304). The other end of the first main rod (302) is provided with a hinge groove (301). The first hinge joint (303) is hingedly assembled in the hinge groove (301). The first hinge joint (303) is fixedly connected to the side of the first electrically controlled telescopic rod (4) away from the second universal joint (7).

8. A lifting fixture for a carriage roof as described in claim 7, characterized in that: The first universal joint (3) further includes a first threaded structure (306), which is disposed between the limiting ring (304) and the first main rod (302). The first threaded structure (306) is used for positioning and locking the limiting ring (304) on the first main rod (302).

9. A lifting fixture for a carriage roof as described in claim 1, characterized in that: The second universal joint (7) includes a second hinge joint (701), a spacer ring (702), a top cover plate (703), a docking ring (704), and a second main rod (705). One end of the second main rod (705) is fixedly connected to the top cover plate (703). The other end of the second main rod (705) is fitted with a spacer ring (702) and a docking ring (704) and then fixedly connected to the lifting plate (6). The spacer ring (702) is used to separate multiple docking rings (704) and to separate the docking rings (704) from the lifting plate (6). One end of the second hinge joint (701) is hinged to the docking ring (704), and the other end of the second hinge joint (701) is fixedly connected to the side of the first electrically controlled telescopic rod (4) away from the first universal joint (3).

10. A lifting fixture for a carriage roof as described in claim 9, characterized in that: The second universal joint (7) further includes an unlocking pull plate (706), an elastic element (707), a locking rod (708), a second threaded structure (709), and a locking groove (710). The locking groove (710) is located at the bottom of the connection between the lifting plate (6) and the second main rod (705). The second threaded structure (709) is provided between the lower side end face of the second main rod (705) and the lifting plate (6). The second threaded structure (709) is used for the second main rod. (705) Locking with the lifting plate (6), one end of the locking rod (708) fits into the locking groove (710), and the other end of the locking rod (708) passes through the second main rod (705) and the top cover plate (703) and is fixedly connected to the unlocking pull plate (706). The elastic element (707) is assembled between the unlocking pull plate (706) and the top cover plate (703). The elastic element (707) is used to make the unlocking pull plate (706) fit against the top cover plate (703).

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