Double-column gantry double-cylinder hydraulic lifting machine

Abstract

The utility model relates to the technical field of mechanical maintenance, and particularly discloses a double-column gantry double-cylinder hydraulic lifting machine which comprises two symmetrically-distributed stand columns, first sliding grooves are formed in the outer walls of the stand columns, hydraulic cylinders are installed on the bottom end faces in the first sliding grooves, and the output ends of the hydraulic cylinders are fixedly connected with an installation box. A first sliding groove is formed in the mounting box, a first sliding block is slidably connected into the first sliding groove, two supporting mechanisms are movably arranged on the outer wall of the first sliding block, the first sliding block is fixedly connected with the mounting box through a connecting plate, and a safety mechanism is arranged in the mounting box. Through cooperation of a second servo motor, a rotating shaft, a second sliding block, a clamping block, a clamping hole, a limiting block, a limiting groove and a spring, a mechanical safety mechanism can still prevent the supporting mechanism from falling off when the device is accidentally powered off, safety and reliability are achieved, through cooperation of the second servo motor and an electric push rod, the angle and length of a first supporting arm and the angle and length of a second supporting arm can be automatically adjusted, and operation is convenient. The use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of mechanical maintenance technology, and specifically discloses a double-column gantry double-cylinder hydraulic lift. Background Technology

[0002] A car lift is an automotive maintenance device used in the auto repair industry to lift vehicles. Car lifts play a crucial role in automotive repair and maintenance; they are indispensable for both major overhauls and minor repairs. The quality and characteristics of car lifts directly impact the safety of repair personnel. As a piece of automotive repair and maintenance equipment, car lifts must be used safely, protecting not only the vehicle and its associated property but also the personal safety of maintenance personnel.

[0003] Chinese patent CN103738884B discloses a double-column gantry double-cylinder hydraulic lift, comprising a support section, a support arm section, and a power section. The support section includes a crossbeam and left and right column assemblies. The support arm section includes left and right main support arm welded bodies, left and right auxiliary support arm welded bodies, and a three-piece assembly. The left and right auxiliary support arm welded bodies are located inside the left and right main support arm welded bodies, and the three-piece assembly is located at the ends of the left and right auxiliary support arm welded bodies. The power section includes a motor, an oil tank, a manual unloading valve, an electrical control box, a hydraulic device, and an electromagnetic locking device. The motor, oil tank, and electrical control box are located on the side of the right column assembly, and the hydraulic device is located inside the left and right column assemblies. The advantages of this invention are: the use of an electromagnetic safety device, making it more robust and reliable; simple structure; easy assembly and disassembly; and safety and practicality.

[0004] The aforementioned document discloses a double-column gantry double-cylinder hydraulic lift that uses an electromagnetic safety device. In the event of an accidental power outage, the safety device will fail, posing a safety hazard. Therefore, a double-column gantry double-cylinder hydraulic lift is needed to solve this problem. Utility Model Content

[0005] This utility model proposes a double-column gantry double-cylinder hydraulic lift. Through a mechanical safety mechanism, the support mechanism can still prevent the support mechanism from falling when the device is accidentally powered off, which is safe and reliable. It also automatically adjusts the angle and length of the support mechanism, making it convenient to use.

[0006] This utility model is implemented as follows: a double-column gantry double-cylinder hydraulic lift includes two symmetrically distributed columns. The outer wall of each column is provided with a first sliding groove. A hydraulic cylinder is installed on the bottom surface inside the first sliding groove. The output end of the hydraulic cylinder is fixedly connected to a mounting box. A first slider is slidably connected inside the first sliding groove. Two support mechanisms are movably arranged on the outer wall of the first slider. The first slider is fixedly connected to the mounting box through a connecting plate. A safety mechanism is provided inside the mounting box.

[0007] The safety mechanism includes a sleeve fixedly connected inside the mounting box, a rotating shaft rotatably connected inside the sleeve, a second sliding groove opened inside the rotating shaft, a second slider slidably connected inside the second sliding groove, a locking block fixedly connected to the outer wall of the second slider, a spring provided inside the second sliding groove, a second servo motor with its output end fixedly connected to the rotating shaft installed on the inner wall of the mounting box, and multiple evenly distributed locking holes matching the locking blocks opened on the outer wall of the column.

[0008] As a preferred embodiment of the present invention, the support mechanism includes a first support arm rotatably connected to the outer wall of the first slider via a coupling shaft and an ear plate. A second support arm is slidably connected to the inner wall of the first support arm. An electric push rod with its output end fixedly connected to the second support arm is installed on the inner wall of the first support arm. A support plate is threadedly connected to the upper end face of the second support arm. A first servo motor with its output end fixedly connected to the first support arm is installed on the upper end face of the ear plate.

[0009] As a preferred embodiment of the present invention, a double-column gantry double-cylinder hydraulic lift has two symmetrically distributed limiting grooves on the inner wall of the rotating shaft, and two limiting blocks that are slidably connected to the limiting grooves are fixedly connected to the outer wall of the second slider.

[0010] As a preferred embodiment of the double-column gantry double-cylinder hydraulic lift of this utility model, both the mounting box and the outer wall of the first support arm are provided with heat dissipation holes.

[0011] In a preferred embodiment of this utility model, the second slider is rectangular.

[0012] As a preferred embodiment of the double-column gantry double-cylinder hydraulic lift of this utility model, the clamping block is cylindrical with an inclined surface.

[0013] In a preferred embodiment of this utility model, a double-column gantry double-cylinder hydraulic lift is provided, wherein two symmetrically distributed limiting rods are fixedly connected to the inner wall of the first slide groove, and the first slider is slidably connected to the two limiting rods.

[0014] The beneficial effects of this utility model are:

[0015] 1. Through the cooperation of the second servo motor, rotating shaft, second slider, locking block, locking hole, limit block, limit groove and spring, a mechanical safety mechanism can prevent the support mechanism from falling when the device is accidentally powered off, which is safe and reliable.

[0016] 2. The angle and length of the first and second support arms can be automatically adjusted by the cooperation of the second servo motor and electric push rod, making it convenient to use. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is an overall structural diagram of a double-column gantry double-cylinder hydraulic lift according to the present invention;

[0019] Figure 2 This is a front sectional view of a double-column gantry double-cylinder hydraulic lift according to the present invention;

[0020] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a structural diagram of the slider of this utility model;

[0022] Figure 5 This is a structural diagram of the rotating shaft of this utility model;

[0023] Figure 6 This is a cross-sectional view of the support mechanism of this utility model.

[0024] The markings in the diagram are: 1. Column; 2. First slide groove; 3. Hydraulic cylinder; 4. First slider; 5. Limiting rod; 6. Mounting box; 7. Connecting plate; 8. Ear plate; 9. Support mechanism; 901. First support arm; 902. Second support arm; 903. Electric actuator; 904. Support plate; 905. First servo motor; 10. Sleeve; 11. Rotating shaft; 12. Second servo motor; 13. Second slide groove; 14. Second slider; 15. Locking block; 16. Spring; 17. Limiting groove; 18. Limiting block; 19. Locking hole. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0026] Please see Figure 1-6A double-column gantry double-cylinder hydraulic lift includes two symmetrically distributed columns 1. The outer wall of the column 1 is provided with a first sliding groove 2. A hydraulic cylinder 3 is installed on the bottom surface inside the first sliding groove 2. The output end of the hydraulic cylinder 3 is fixedly connected to a mounting box 6. A first slider 4 is slidably connected inside the first sliding groove 2. Two support mechanisms 9 are movably arranged on the outer wall of the first slider 4. The first slider 4 is fixedly connected to the mounting box 6 through a connecting plate 7. A safety mechanism is provided inside the mounting box 6.

[0027] The safety mechanism includes a sleeve 10 fixedly connected inside the mounting box 6. A rotating shaft 11 is rotatably connected inside the sleeve 10. A second slide groove 13 is opened inside the rotating shaft 11. A second slider 14 is slidably connected inside the second slide groove 13. A locking block 15 is fixedly connected to the outer wall of the second slider 14. A spring 16 is provided inside the second slide groove 13. A second servo motor 12 with its output end fixedly connected to the rotating shaft 11 is installed on the inner wall of the mounting box 6. A plurality of evenly distributed locking holes 19 that match the locking blocks 15 are opened on the outer wall of the column 1.

[0028] In this embodiment: Hydraulic cylinder 3 is activated, causing mounting box 6 to move upwards. This, in turn, drives first slider 4 to slide upwards along limit rod 5 via connecting plate 7. First slider 4 further drives support mechanism 9 to move upwards, thereby lifting the vehicle. As mounting box 6 moves upwards, it drives rotating shaft 11 upwards. Rotating shaft 11 further drives second slider 14 and locking block 15 upwards. Locking block 15 slides inwards under pressure from the inner wall of column 1, compressing spring 16. When locking block 15 moves upwards and aligns with the next locking hole 19, locking block 15 slides outwards under the elastic force of spring 16. The mounting box 6 and the first slider 4 are locked in the locking hole 19 to limit and fix them, preventing them from sliding down accidentally and causing the vehicle to fall. When the vehicle is lowered, the second servo motor 12 is started first. The second servo motor 12 drives the rotating shaft 11 to rotate 180 degrees, which in turn drives the second slider 14 and the locking block 15 to rotate 180 degrees, so that the inclined surface of the locking block 15 rotates to the lower side. Then, the hydraulic cylinder 3 drives the mounting box 6 to move downward and lower the vehicle. This utility model has a mechanical safety mechanism that can still prevent the support mechanism 9 from falling when the device is accidentally powered off, making it safe and reliable.

[0029] As a technical optimization of this utility model, the support mechanism 9 includes a first support arm 901 rotatably connected to the outer wall of the first slider 4 via a connecting shaft and an ear plate 8. A second support arm 902 is slidably connected to the inner wall of the first support arm 901. An electric push rod 903 with its output end fixedly connected to the second support arm 902 is installed on the inner wall of the first support arm 901. A support plate 904 is threadedly connected to the upper end face of the second support arm 902. A first servo motor 905 with its output end fixedly connected to the first support arm 901 is installed on the upper end face of the ear plate 8.

[0030] In this embodiment: the first servo motor 905 is started, which drives the first support arm 901 to rotate, thereby adjusting the angle of the first support arm 901 and the second support arm 902. The electric push rod 903 is started, which drives the second support arm 902 to slide outward or inward, thereby adjusting the length of the support mechanism 9. This utility model can automatically adjust the angle and length of the support mechanism 9, and is convenient to use.

[0031] As a technical optimization of this utility model, the inner wall of the rotating shaft 11 is provided with two symmetrically distributed limiting grooves 17, and the outer wall of the second slider 14 is fixedly connected with two limiting blocks 18 that are slidably connected to the limiting grooves 17.

[0032] In this embodiment, the limiting groove 17 and the limiting block 18 cooperate to limit the second slider 14 and prevent the second slider 14 from coming off the rotating shaft 11.

[0033] As a technical optimization of this utility model, heat dissipation holes are provided on the outer walls of both the mounting box 6 and the first support arm 901.

[0034] In this embodiment, heat dissipation holes are provided on the outer walls of both the mounting box 6 and the first support arm 901 to facilitate heat dissipation for the electric push rod 903 and the second servo motor 12.

[0035] As a technical optimization of this utility model, the second slider 14 is rectangular.

[0036] In this embodiment, by setting the second slider 14 as a rectangle, the second slider 14 is prevented from rotating within the rotating shaft 11.

[0037] As a technical optimization of this utility model, the card block 15 is a cylinder with an inclined surface.

[0038] In this embodiment: by setting the card block 15 to a cylindrical shape, it is easy for the card block 15 to rotate in the card hole 19; by setting the card block 15 to a bevel shape, it is easy for the card block 15 to slide inward under the pressure of the inner wall of the column 1.

[0039] As a technical optimization of this utility model, the inner wall of the first slide groove 2 is fixedly connected with two symmetrically distributed limiting rods 5, and the first slider 4 is slidably connected with the two limiting rods 5.

[0040] In this embodiment, the limiting rod 5 facilitates the limiting of the first slider 4, making the up-and-down movement of the first slider 4 stable.

[0041] The working principle and usage process of this utility model are as follows: First, the vehicle is driven between the two pillars 1. Then, four first servo motors 905 are activated, which in turn rotate the first support arm 901, thereby adjusting the angle of the first support arm 901 and the second support arm 902. Next, four electric push rods 903 are activated, which drive the second support arm 902 to slide outwards or inwards, thereby adjusting the length of the support mechanism 9 so that the support plate 904 extends below the vehicle's support beam. Then, the four support plates 904 are rotated to adjust their height, so that the support plate 904 rests against the bottom of the vehicle's support beam. Then, two hydraulic cylinders 3 are activated simultaneously, which drive the mounting box 6 upwards, which in turn drives the first slider 4 to slide upwards along the limit rod 5 via the connecting plate 7. The first slider 4 further drives the support mechanism 9 upwards, thereby lifting the vehicle. When the mounting box 6 moves upwards, it drives the rotating shaft 11 upwards. 11 further drives the second slider 14 and the locking block 15 to move upward. The locking block 15 slides inward under the pressure of the inner wall of the column 1 and compresses the spring 16. When the locking block 15 moves upward and aligns with the next locking hole 19, the locking block 15 slides outward under the elastic force of the spring 16, thereby locking into the locking hole 19, limiting and fixing the mounting box 6 and the first slider 4, preventing the mounting box 6 and the first slider 4 from accidentally sliding downward and causing the vehicle to fall. When lowering the vehicle, the second servo motor 12 is started first. The second servo motor 12 drives the rotating shaft 11 to rotate 180 degrees, which in turn drives the second slider 14 and the locking block 15 to rotate 180 degrees, so that the inclined surface of the locking block 15 rotates to the lower side. Then, the hydraulic cylinder 3 drives the mounting box 6 to move downward and lower the vehicle. This utility model uses a mechanical safety mechanism to prevent the support mechanism 9 from falling when the device is accidentally powered off. It is safe and reliable, and can automatically adjust the angle and length of the support mechanism 9, making it convenient to use.

[0042] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", 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.

[0043] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A double-column double-cylinder hydraulic lifting machine comprising two symmetrically distributed columns (1), the outer wall of the column (1) is provided with a first sliding groove (2), and the bottom end face inside the first sliding groove (2) is provided with a hydraulic cylinder (3), characterized in that: The output end of the hydraulic cylinder (3) is fixedly connected with a mounting box (6), the inside of the first sliding groove (2) is slidably connected with a first sliding block (4), the outer wall of the first sliding block (4) is movably provided with two supporting mechanisms (9), the first sliding block (4) and the mounting box (6) are fixedly connected through a connecting plate (7), and the inside of the mounting box (6) is provided with a safety mechanism; The safety mechanism comprises a sleeve (10) fixedly connected to the inside of the mounting box (6), the inside of the sleeve (10) is rotatably connected with a rotating shaft (11), the inside of the rotating shaft (11) is provided with a second sliding groove (13), the inside of the second sliding groove (13) is slidably connected with a second sliding block (14), the outer wall of the second sliding block (14) is fixedly connected with a clamping block (15), the inside of the second sliding groove (13) is provided with a spring (16), the inner wall of the mounting box (6) is provided with a second servo motor (12) with an output end fixedly connected with the rotating shaft (11), and the outer wall of the stand column (1) is provided with a plurality of clamping holes (19) uniformly distributed and matched with the clamping block (15).

2. The double-column gantry double-cylinder hydraulic hoist according to claim 1, characterized in that: The supporting mechanism (9) comprises a first supporting arm (901) rotatably connected to the outer wall of the first sliding block (4) through a connecting shaft and an ear plate (8), the inner wall of the first supporting arm (901) is slidably connected with a second supporting arm (902), the inner wall of the first supporting arm (901) is provided with an electric push rod (903) with an output end fixedly connected with the second supporting arm (902), the upper end surface of the second supporting arm (902) is threadedly connected with a supporting plate (904), and the upper end surface of the ear plate (8) is provided with a first servo motor (905) with an output end fixedly connected with the first supporting arm (901).

3. The double-column gantry double-cylinder hydraulic hoist according to claim 1, characterized in that: The inner wall of the rotating shaft (11) is provided with two symmetrically distributed limiting grooves (17), and the outer wall of the second sliding block (14) is fixedly connected with two limiting blocks (18) slidably connected with the limiting grooves (17).

4. The dual column gantry dual cylinder hydraulic elevator as claimed in claim 2, wherein: The outer walls of the mounting box (6) and the first supporting arm (901) are provided with heat dissipation holes.

5. The dual column gantry dual cylinder hydraulic elevator as claimed in claim 1, wherein: The second sliding block (14) is rectangular.

6. The dual column gantry dual cylinder hydraulic elevator as claimed in claim 1, wherein: The clamping block (15) is a cylindrical shape with an inclined surface.

7. The dual column gantry dual cylinder hydraulic elevator as claimed in claim 1, wherein: The inner wall of the first sliding groove (2) is fixedly connected with two symmetrically distributed limiting rods (5), and the first sliding block (4) is slidably connected with the two limiting rods (5).

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