Lifting device for producing semitrailers

Abstract

The utility model relates to the technical field of semitrailer production, in particular to a lifting device for semitrailer production, which comprises a lifting frame body and further comprises four supporting mechanisms, the four supporting mechanisms are all arranged on the lifting frame body, each supporting mechanism comprises a supporting column, the supporting columns are located below the lifting frame body, moving wheels are fixedly connected to the supporting columns, and the moving wheels are arranged on the lifting frame body. A mounting groove and a lifting groove are formed in the supporting column, a hydraulic cylinder is mounted in the mounting groove, and through cooperation of the moving wheels, the supporting column and the like, the lifting frame body can be conveniently moved, a motor, a first gear, a second gear and the like can be conveniently matched to drive a threaded shaft to rotate, and the threaded shaft can conveniently drive a lifting block, a supporting plate and a supporting seat to ascend and descend; and the stability of the whole device is guaranteed, the whole device is prevented from moving during use, the safety is improved, through cooperation of a hydraulic cylinder, a second sliding block and the like, the lifting frame body and the semitrailer can be conveniently lifted, and the practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of semi-trailer production technology, specifically to a lifting device for producing semi-trailers. Background Technology

[0002] Semi-trailers are generally used for freight transport. They are vehicles connected to a tractor unit (truck or tractor-trailer) via a hinge, forming a vehicle assembly. Semi-trailers are a type of large truck, typically consisting of a tractor unit and a semi-trailer. The front of the semi-trailer is connected to the rear of the tractor unit, but its rear is supported by its own wheels. This design gives semi-trailers greater carrying capacity and relative flexibility, making them commonly used in freight transport, logistics, and the freight industry.

[0003] A search revealed a utility model patent in China with patent publication number CN221854103U, which discloses a lifting device for producing semi-trailers. The device generally includes a lifting frame and a support frame mounted on the upper side of the lifting frame. The lower side of the lifting frame has a support leg, and the support leg houses a hydraulic cylinder. The output end of the hydraulic cylinder passes through the upper end of the support leg. In use, a semi-trailer in normal production or awaiting repair is moved to the lower side of the internal support frame of the lifting frame, causing the locking block at the lower end of the chain to be positioned under the semi-trailer's underside. Then, the lifting mechanism is activated. The lifting support rod is installed on the snap-fit ​​block, and the lifting support plate is inserted under the semi-trailer. It is then stabilized inside the lifting frame by a stabilizing component. Finally, the lifting frame is moved by a hydraulic cylinder, thereby achieving the effect of stabilizing the lifting of the semi-trailer. However, the above device still has some shortcomings. For example, the stability of the device is poor when lifting the semi-trailer, and the device is not convenient for providing stable fixed support for the entire device. If the moving wheels move, it may cause danger and pose a certain safety hazard. Therefore, we propose a lifting device for the production of semi-trailers. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a lifting device for producing semi-trailers, which solves the problem mentioned in the background art that the existing technology has poor stability when lifting semi-trailers. The device is not convenient for providing stable fixed support for the entire device. If the moving wheels move, it may cause danger and pose certain safety hazards.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a lifting device for producing semi-trailers, comprising a lifting frame body, and further comprising:

[0008] Four support mechanisms are provided, all mounted on the lifting frame body. Each support mechanism includes a support column located below the lifting frame body, with a fixedly connected caster wheel. The support column has an installation groove and a lifting groove. A hydraulic cylinder is installed in the installation groove, and its output end is fixedly connected to the lifting frame body. A lifting block is slidably connected in the lifting groove, with two fixedly connected support plates. A support seat is fixedly connected to the support plates. A threaded shaft is rotatably connected in the lifting groove, and the lifting block is threadedly connected to the threaded shaft. A gear is fixedly fitted on the threaded shaft. A motor is mounted on the support column, and its output end extends into the lifting groove and is fixedly fitted with a gear. Gear 1 and gear 2 mesh to support, move, and stably position the lifting frame body.

[0009] Preferably, the support column has an opening that communicates with the lifting groove. A maintenance plate is rotatably connected to the opening. A slot is provided on the maintenance plate, and a card plate is fixedly connected to the slot. A sliding groove is provided in the opening, and a slider is slidably connected to the sliding groove. Multiple springs are provided between the slider and the sliding groove. A control block is fixedly connected to the slider, and the control block extends through the sliding groove via a control port. The slider is located between the slot and the card plate.

[0010] Furthermore, a stabilizing plate is fixedly connected inside the lifting groove, and the threaded shaft is rotatably connected to the stabilizing plate.

[0011] Furthermore, two sliding grooves are provided on the support column, and a slider is slidably connected in the sliding groove, and the slider is fixedly connected to the lifting frame body.

[0012] Furthermore, a protective cover is detachably connected to the support column, and the motor is located inside the protective cover.

[0013] Based on the aforementioned solution, an anti-slip pad is fixedly connected to the support base.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a lifting device for the production of semi-trailers, which has the following beneficial effects:

[0016] This lifting device for semi-trailer production facilitates the movement of the lifting frame body through the cooperation of movable wheels, support columns, etc. It also facilitates the cooperation of motors, gear one, gear two, etc., to drive the threaded shaft to rotate, which in turn drives the lifting block, support plate, and support seat to rise and fall. This ensures that the support seat is firmly on the ground, guaranteeing the stability of the entire device and preventing it from moving during use, thus improving safety. The cooperation of hydraulic cylinders, slider two, etc., facilitates the lifting of the lifting frame body and the semi-trailer, improving practicality. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present application;

[0018] Figure 2 This is a three-dimensional structural diagram of the supporting columns, motors, etc., in this application;

[0019] Figure 3 This is a three-dimensional structural diagram of the repair board, control block, etc., used in this application;

[0020] Figure 4 This is a three-dimensional structural diagram of the meshing of gear one and gear two in this application;

[0021] Figure 5 For this application Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0022] In the diagram: 1. Lifting frame body; 2. Support column; 3. Moving wheel; 4. Hydraulic cylinder; 5. Lifting block; 6. Support plate; 7. Support base; 8. Threaded shaft; 9. Gear 1; 10. Motor; 11. Gear 2; 12. Maintenance plate; 13. Clamping plate; 14. Slider 1; 15. Control block; 16. Stabilizing plate; 17. Slider 2; 18. Protective cover; 19. Anti-slip mat. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example

[0025] Please see Figures 1-5 A lifting device for producing semi-trailers includes a lifting frame body 1, and further includes:

[0026] Four support mechanisms are provided, all mounted on the lifting frame body 1. Each support mechanism includes a support column 2 located below the lifting frame body 1. A movable wheel 3 is fixedly connected to the support column 2. The support column 2 has an installation groove and a lifting groove. A hydraulic cylinder 4 is installed in the installation groove, and its output end is fixedly connected to the lifting frame body 1. A lifting block 5 is slidably connected in the lifting groove. Two support plates 6 are fixedly connected to the lifting block 5, and a support seat 7 is fixedly connected to the support plates 6. A threaded shaft 8 is rotatably connected in the lifting groove. The lifting block 5 is threadedly connected to the threaded shaft 8, and a gear 9 is fixedly fitted on the threaded shaft 8. A motor 10 is mounted on the support column 2. The output end of the motor 10 passes through the lifting groove and is fixedly fitted with a gear 11. Gear 9 and gear 11 mesh. The motor 10 provides power, gear 9 and gear 11 transmit power, the threaded shaft 8 drives the lifting block 5 to rise and fall, and the support seat 7 provides support.

[0027] The support column 2 has an opening that connects to the lifting groove. A maintenance plate 12 is rotatably connected inside the opening. The maintenance plate 12 has a slot, and a locking plate 13 is fixedly connected inside the slot. A sliding groove is provided inside the opening, and a slider 14 is slidably connected inside the sliding groove. Multiple springs are provided between the slider 14 and the sliding groove. A control block 15 is fixedly connected to the slider 14. The control block 15 passes through the sliding groove through a control port. The slider 14 is located between the slot and the locking plate 13. The springs, slider 14, etc., are used to limit the movement of the maintenance plate 12. The locking plate 13 is used to facilitate the opening of the maintenance plate 12 and to facilitate the maintenance of gear 9 and gear 11.

[0028] A stabilizing plate 16 is fixedly connected inside the lifting groove, and a threaded shaft 8 is rotatably connected to the stabilizing plate 16 to improve the stability of the threaded shaft 8.

[0029] Two sliding grooves are provided on the support column 2, and a slider 17 is slidably connected in the sliding groove. The slider 17 is fixedly connected to the lifting frame body 1 to improve the connection between the hydraulic cylinder 4 and the lifting frame body 1, so that the connection is more secure when the hydraulic cylinder 4 moves to lift the lifting frame body 1.

[0030] A protective cover 18 is detachably connected to the support column 2, and the motor 10 is located inside the protective cover 18 to protect the motor 10.

[0031] An anti-slip pad 19 is fixedly connected to the support base 7 to increase friction and stability during support.

[0032] It should be further explained that the hydraulic cylinder 4 and motor 10 in this embodiment are conventional equipment known to those skilled in the art and available on the market. Models can be selected or customized according to actual needs. In this patent, we only use them without improving their structure and function. Their setting method, installation method and electrical connection method can be adjusted and operated by those skilled in the art according to the requirements of their instruction manual, and will not be described in detail here. The hydraulic cylinder 4 and motor 10 are equipped with matching control switches. The installation position of the control switches can be selected according to actual usage needs to facilitate operation and control by the operator.

[0033] In summary, the working principle and process of the lifting device used for semi-trailer production are as follows: First, connect the motor 10 to the forward and reverse circuit according to the corresponding instruction manual. Then, when using it, move the entire device to the designated position and start the motor 10. The motor 10 drives the gear 2 11 to rotate, which in turn drives the gear 1 9 and the threaded shaft 8 to rotate. The threaded shaft 8 drives the lifting block 5 to rise and fall, causing the lifting block 5 to move the support plate 6 and the support seat 7, so that the anti-slip pad 19 on the support seat 7 can touch the ground. At this point, stable support for the entire device is achieved, and then the lifting frame body 1 can be used to operate the semi-trailer. Once fixed in place, the overall device is stable, preventing the moving wheels 3 from shifting. After completion, the hydraulic cylinder 4 is activated, which drives the lifting frame body 1 and the semi-trailer to lift. The lifting frame body 1 involved in this solution is the authorized technology disclosed in the Chinese Utility Model Patent Publication (Announcement) No. CN221854103U. Its internal structure and working principle are well known to those skilled in the art and are not the innovation of this patent. The innovation of this patent lies in the stable placement of the overall device and the improvement of safety. Therefore, this patent will not elaborate on its internal structure and working principle.

[0034] The above embodiments merely illustrate specific implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A lifting device for the production of a semi-trailer, comprising a lifting frame body (1), characterised in that, Also includes: Four support mechanisms are provided, all of which are mounted on the lifting frame body (1). Each support mechanism includes a support column (2) located below the lifting frame body (1). A movable wheel (3) is fixedly connected to the support column (2). An installation groove and a lifting groove are provided within the support column (2). A hydraulic cylinder (4) is installed in the installation groove, and its output end is fixedly connected to the lifting frame body (1). A lifting block (5) is slidably connected within the lifting groove. 5) Two support plates (6) are fixedly connected to the upper part. A support base (7) is fixedly connected to the support plate (6). A threaded shaft (8) is rotatably connected in the lifting groove. The lifting block (5) is threadedly connected to the threaded shaft (8). A gear one (9) is fixedly sleeved on the threaded shaft (8). A motor (10) is installed on the support column (2). The output end of the motor (10) passes through the lifting groove and is fixedly sleeved with a gear two (11). The gear one (9) and the gear two (11) mesh with each other.

2. A lifting device for producing a semi-trailer according to claim 1, characterized in that: The support column (2) has an opening that is connected to the lifting groove. A maintenance plate (12) is rotatably connected inside the opening. A slot is provided on the maintenance plate (12). A card plate (13) is fixedly connected inside the slot. A sliding groove is provided inside the opening. A slider (14) is slidably connected inside the sliding groove. Multiple springs are provided between the slider (14) and the sliding groove. A control block (15) is fixedly connected to the slider (14). The control block (15) passes through the sliding groove through the control port. The slider (14) is located between the slot and the card plate (13).

3. A lifting device for producing a semi-trailer according to claim 2, characterized in that: A stabilizing plate (16) is fixedly connected inside the lifting groove, and the threaded shaft (8) is rotatably connected to the stabilizing plate (16).

4. A lifting device for producing a semi-trailer according to claim 3, characterized in that: Two sliding grooves are provided on the support column (2), and a slider (17) is slidably connected in the sliding groove. The slider (17) is fixedly connected to the lifting frame body (1).

5. A lifting device for producing a semi-trailer according to claim 4, characterized in that: A protective cover (18) is detachably connected to the support column (2), and the motor (10) is located inside the protective cover (18).

6. A lifting device for producing a semi-trailer according to claim 5, characterized in that: An anti-slip pad (19) is fixedly connected to the support base (7).

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