Double-shear-fork synchronous lifting automobile lifting machine

Abstract

The invention belongs to the technical field of lifting machines, and particularly discloses a double-shear-fork synchronous lifting automobile lifting machine which comprises a side slope plate, a pair of placement grooves are symmetrically formed in the side slope plate, shear type lifting mechanisms are arranged in the placement grooves, a same top plate is arranged on the pair of shear type lifting mechanisms, an opening is formed in the top plate, and the shear type lifting mechanisms are arranged on the top plate. Sliding grooves are formed in the four corners of the side slope plate correspondingly, guide grooves are formed in one sides of the inner walls of the sliding grooves, reinforcing plates are rotationally installed at the four corners of the top plate correspondingly, sliding shafts and sliding blocks are rotationally installed on the two sides of the other ends of the reinforcing plates correspondingly, and the sliding blocks are slidably installed in the guide grooves. Through cooperative cooperation of the shear type lifting mechanism and the reinforcing plate, the reinforcing plate synchronously moves along with the top plate during lifting, secondary reinforcing is completed through cooperation of the locking insertion block and the locking insertion groove after the reinforcing plate is in place, stress can be evenly spread through the reinforcing plate and the shear type lifting mechanism, the load of the shear type lifting mechanism is relieved, and vehicle inclination caused by disability of the shear type lifting mechanism is avoided to a certain extent.

Description

Technical Field

[0001] This invention belongs to the field of lifts, and specifically discloses a double scissor lift for synchronous lifting of automobiles. Background Technology

[0002] As a core piece of automotive maintenance equipment in the automotive repair and maintenance industry, car lifts are used in various repair scenarios, playing an irreplaceable role in both major vehicle overhauls and minor maintenance.

[0003] Existing car lifts can achieve stable lifting and positioning of cars, meeting the basic needs of routine maintenance operations. With a mature transmission and lifting structure, they are suitable for the lifting needs of various car models and can complete the work tasks well under normal working conditions.

[0004] However, existing lifts rely on a single transmission system to complete lifting and positioning. When abnormal situations such as transmission failure or operational errors occur, there is a lack of additional protection mechanisms to limit and fix the lifted vehicle or heavy object, which may cause the heavy object to fall and thus threaten the safety of the workers. Safety design needs to be supplemented through structural optimization. Summary of the Invention

[0005] In view of this, the technical problem to be solved by the present invention is to provide a double scissor lift synchronously lifting car lift to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides a double scissor lift synchronously lifting car lift, including a ramp plate. A pair of mounting slots are symmetrically formed on the ramp plate, and a scissor lifting mechanism is installed within each mounting slot. The pair of scissor lifting mechanisms are mounted on the same top plate, which has an opening. Sliding grooves are formed at each of the four corners of the ramp plate. A guide groove is formed on one side of the inner wall of each sliding groove. Reinforcing plates are rotatably mounted at each of the four corners of the top plate. A sliding shaft and a slider are rotatably mounted on both sides of the other end of each reinforcing plate, and the slider is slidably mounted within the guide groove. A sliding seat is provided on one side of the sliding shaft and is slidably mounted within the sliding groove. A push-pull plate is inserted into and slidably mounted within the sliding seat. Several locking blocks are provided on one side of the push-pull plate, and several locking slots are also formed on one side of the inner wall of the sliding groove. The locking blocks are inserted into the locking slots and slidably adapted.

[0007] In the above technical solution, preferably, an electric push rod is provided inside the slide, a drive block is provided at the output end of the electric push rod, a guide block is provided at the bottom of the drive block, a guide groove is provided on the push-pull plate, and the guide block is inserted and slidably installed.

[0008] In the above technical solution, preferably, the top of the scissor lifting mechanism is provided with a lifting plate, and the lifting plate is inserted into the top plate and slidably installed. A pair of contact plates are symmetrically arranged in the top plate, and the contact plates are set in the top plate through pressure sensors at the four corners.

[0009] In the above technical solution, preferably, the outer wall of the lifting plate is provided with uniformly distributed top columns, and the contact plate is provided with uniformly distributed insertion holes that are slidably adapted to the top columns.

[0010] In the above technical solution, preferably, a plurality of locking plates are provided on the other side of the push-pull plate, and a mating groove is provided on the other side of the inner wall of the slide groove. The mating groove is fitted with evenly distributed and obliquely arranged flaps through a fixing block.

[0011] In the above technical solution, preferably, a torsion spring is assembled between the flap and the fixing block.

[0012] In the above technical solution, preferably, the inner wall of the mating groove is provided with uniformly distributed limiting blocks, and the limiting blocks abut against one side of the flip plate.

[0013] In the above technical solution, preferably, side plates are provided on both sides of the top plate.

[0014] In the above technical solution, preferably, a row of hooks is provided on both sides of the top plate, and a transparent baffle is hung on one of the row of hooks.

[0015] In the above technical solution, preferably, a pressing edge is provided on the outer wall of the reinforcing plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] Through the coordinated operation of the scissor lift mechanism and the reinforcing plate, the reinforcing plate moves synchronously with the top plate during lifting. After reaching the position, it completes secondary reinforcement through the cooperation of the locking block and the locking slot. This can share the force with the scissor lift mechanism, reduce the load on the scissor lift mechanism, and to a certain extent avoid vehicle tilting caused by the failure of the scissor lift mechanism.

[0018] The scissor lift mechanism is semi-rigidly connected to the top plate. With the help of pressure sensors to detect the force on the top column and the contact plate, the synchronicity of the two lifting plates can be determined. Synchronization calibration can be achieved by adjusting the thrust of the drive cylinder, thereby improving the smoothness of the lift.

[0019] During the lifting process, the locking plate, flap, torsion spring, and limit block form an automatic locking mechanism. With the help of a pressure sensor, the top plate can be locked immediately when the scissor lifting mechanism fails. The purely mechanical locking structure has good stability and can improve operational safety.

[0020] The transparent protective cloth is hung with hooks and secured with clamping edges. It can block the splashing of dirty liquids during maintenance, while the transparent material does not affect the observation of the work, thus combining protection and practicality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the scissor lifting mechanism of the present invention;

[0023] Figure 3 This is a schematic diagram of the connection between the scissor lift mechanism and the top plate of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the chute of the present invention;

[0025] Figure 5 This is a schematic diagram of the locking slot position structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the internal structure of the mating groove of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure on both sides of the push-pull plate of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the top plate of the present invention before it is lifted;

[0029] Figure 9 This is a schematic diagram of the structure after the transparent cover is installed according to the present invention.

[0030] In the diagram: 1. Slope plate; 2. Installation groove; 3. Scissor lifting mechanism; 31. Contact plate; 32. Top column; 4. Top plate; 41. Opening; 42. Side plate; 43. Hook; 44. Contact plate; 45. Insertion hole; 46. Pressure sensor; 5. Reinforcing plate; 51. Slide seat; 52. Electric push rod; 53. Drive block; 54. Guide groove; 55. Push-pull plate; 56. Sliding shaft; 57. Sliding block; 58. Guide block; 59. Locking insert block; 510. Locking plate; 6. Slide groove; 61. Guide groove; 62. Locking slot; 63. Matching groove; 64. Fixing block; 65. Flip plate; 66. Limiting block; 7. Transparent baffle. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0033] like Figures 1-9 The illustrated double scissor lift includes a ramp plate 1 with a pair of symmetrical mounting slots 2 for accommodating scissor lifting mechanisms 3. The scissor lifting mechanisms 3 are fixed inside the mounting slots 2, and a lifting plate 31 is mounted on top of each mechanism to transmit lifting force. A single top plate 4 supports the pair of scissor lifting mechanisms 3, directly lifting the vehicle. The top plate 4 has slots that fit the lifting plates 31, allowing the lifting plates 31 to be inserted into and slidably mounted. To achieve precise transmission of lifting force, a pair of contact plates 44 are symmetrically arranged inside the top plate 4. The contact plates 44 are fixed to the reserved mounting positions inside the top plate 4 by pressure sensors 46 at the four corners. The pressure sensors 46 are electrically connected to the equipment controller to provide real-time feedback of force data. Uniformly distributed top columns 32 are welded and fixed to the outer wall of the lifting plate 31. The contact plates 44 are provided with uniformly distributed insertion holes 45 that slide and adapt to the top columns 32, ensuring that the top columns 32 can be accurately inserted into the insertion holes 45 and contact the contact plates 44.

[0034] The slope plate 1 has a sliding groove 6 at each of its four corners. A guide groove 61 is provided on one side of the inner wall of the sliding groove 6. The top plate 4 has a reinforcing plate 5 installed at each of its four corners via a rotating shaft. The reinforcing plate 5 is used to connect the top plate 4 and the slope plate 1 to improve lifting stability. The other two sides of the reinforcing plate 5 are respectively installed with a sliding shaft 56 and a slider 57 via bearings. The slider 57 is slidably installed in the guide groove 61. A sliding seat 51 is welded and fixed on one side of the sliding shaft 56. The sliding seat 51 is slidably installed in the sliding groove 6 so that the reinforcing plate 5 can move synchronously with the lifting of the top plate 4. A receiving cavity is provided in the sliding seat 51. The push-pull plate 55 is inserted and slidably installed in the receiving cavity of the sliding seat 51. Several locking blocks 59 are integrally formed on one side of the push-pull plate 55. Several locking slots 62 are also provided on one side of the inner wall of the sliding groove 6. The locking blocks 59 and the locking slots 62 are slidably adapted to each other.

[0035] An electric push rod 52 is fixedly installed inside the slide block 51 via a mounting base. A drive block 53 is fixed to the output end of the electric push rod 52 via bolts. A guide block 58 is welded and fixed to the bottom of the drive block 53. A guide groove 54 is provided on the push-pull plate 55, and the guide block 58 is inserted into the guide groove 54 and slidably installed to realize the power steering transmission. Several locking plates 510 are integrally formed on the other side of the push-pull plate 55. A mating groove 63 is provided on the other side of the inner wall of the slide groove 6. A uniformly distributed and obliquely arranged flip plate 65 is rotatably installed in the mating groove 63 via a fixing block 64. A torsion spring is assembled between the flip plate 65 and the fixing block 64. The torsion spring can provide a reset elastic force for the flip plate 65. A uniformly distributed limit block 66 is welded and fixed to the inner wall of the mating groove 63, and the limit block 66 abuts against one side of the flip plate 65 to limit the flip direction of the flip plate 65.

[0036] Side plates 42 are fixed to both sides of the top plate 4 by bolts. The side plates 42 are used to limit the lateral position of the car on the top plate 4. A row of hooks 43 are also welded to both sides of the top plate 4. A transparent baffle 7 is hung on the row of hooks 43. A pressing edge is provided on the outer wall of the reinforcing plate 5. The pressing edge is used to press the edge of the transparent baffle 7 to prevent it from shaking.

[0037] The scissor lift mechanism 3 and the top plate 4 are not rigidly connected, but rather use a semi-rigid connection design. During operation, as the scissor lift mechanism 3 drives the lifting plate 31 to rise, the lifting plate 31 contacts the contact plate 44 via the mating relationship between the top post 32 on the lifting plate 31 and the insertion hole 45 on the contact plate 44. The pressure sensor 46 senses the pressure generated by this contact and transmits the force data to the controller to determine the contact condition between the lifting plate 31 and the top plate 4. Based on the force data from the pressure sensors 46 corresponding to the two scissor lift mechanisms 3, the controller... The controller can determine whether the two lifting plates 31 rise synchronously. If a deviation in the force data is detected, it indicates that the rise is not synchronous. The controller then controls the lifting speed by adjusting the thrust of the scissor lifting mechanism 3 drive cylinder to make the forces on the two pressure sensors 46 relatively consistent. After the forces are balanced, based on the same thrust, the top column 32 continuously contacts the inner wall of the top plate 4, and the top plate 4 is driven to rise smoothly by the top column 32. The lifting plate 31 lifts the top plate 4 based on the top column 32. The contact plate 44 is only used as a structure to detect the force and does not participate in the main load-bearing.

[0038] After the car moves to the central axis position on the top plate 4 via the ramp 1, the scissor lifting mechanisms 3 in the two mounting slots 2 are activated simultaneously, driving the lifting plate 31 to rise, which in turn drives the top plate 4 to lift the car. During the lifting process, through the connection of the reinforcing plate 5, the top plate 4 synchronously drives the slide block 51 to slide in the slide groove 6, and the slider 57 synchronously slides in the guide groove 61, providing guidance for the movement of the slide block 51. The slide block 51 simultaneously drives the internal electric push rod 52 to move in the slide groove 6. After the car is lifted to the preset maintenance height, the electric push rods 52 in the four slide blocks 51 are activated simultaneously, driving the drive block 53 to move horizontally, and the drive block 53 drives the bottom... The guide block 58 of the part slides in the guide groove 54 of the push-pull plate 55. Since the guide groove 54 is designed at an angle, the horizontal sliding of the guide block 58 is converted into the lateral driving force of the push-pull plate 55, which pushes the push-pull plate 55 to one side, so that the locking block 59 on one side of the push-pull plate 55 is accurately inserted into the locking slot 62 on the inner wall of the slide groove 6, completing the limiting and fixing of the reinforcing plate 5, and thus completing the secondary reinforcement of the top plate 4. This design distributes the weight of the vehicle equally between the reinforcing plate 5 and the scissor lift mechanism 3, which reduces the load on the scissor lift mechanism 3 to a certain extent, and at the same time avoids the vehicle tilting and overturning due to the failure of any scissor lift mechanism 3, thereby improving the safety of operation.

[0039] During the lifting process, when the electric push rod 52 drives the drive block 53 to move, it will simultaneously drive the locking plate 510 on the other side of the push-pull plate 55 to extend into the mating groove 63. As the top plate 4 rises, the locking plate 510 moves upward and contacts the flip plate 65. The flip plate 65 flips to one side under the pushing force of the locking plate 510, making way for the movement of the locking plate 510. After the locking plate 510 moves past the flip plate 65, the flip plate 65 quickly returns to its original position under the elastic restoring force of the torsion spring and abuts against the limit block 66 again. If the scissor lifting mechanism 3 on one side fails during the lifting process, the lifting plate 31 on that side cannot... As the lifting force continues to be provided, the pressure sensed by the pressure sensors 46 on both sides will show a significant deviation. After the controller detects the pressure deviation, it will control the drive cylinder of the scissor lifting mechanism 3 on the other side to gradually retract, causing the top plate 4 to descend. At this time, the locking plate 510 will contact the other side of the flip plate 65. Based on the limiting block 66's blocking of the flip plate 65, the flip plate 65 cannot flip in the opposite direction, thereby preventing the slide 51 from retracting further, which also has an immediate locking effect on the top plate 4. This design can be used with the pressure sensor 46 to achieve automatic locking of the drive cylinder during the lifting process, and the locking is achieved through a purely mechanical structure, which has good stability.

[0040] During vehicle repair and inspection, the transparent protective cloth 7, hung on the hooks 43 on both sides of the top plate 4, forms a protective barrier. Because the edges of the transparent protective cloth 7 are pressed tightly by the reinforcing plate 5, it will not shake freely. The dirty liquid generated during maintenance will be blocked by the transparent protective cloth 7, preventing it from splashing onto other parts of the equipment or the surrounding area of ​​the maintenance station, thus balancing protection and ease of operation.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A double scissor synchronous lifting car lifter, comprising a side slope plate (1), a pair of installation grooves (2) are symmetrically arranged on the side slope plate (1), a scissor lifting mechanism (3) is arranged in the installation groove (2), a same top plate (4) is arranged on a pair of the scissor lifting mechanisms (3), and an opening (41) is arranged on the top plate (4), characterized in that, The side slope plate (1) is provided with a sliding groove (6) at each corner, a guide groove (61) is formed in one side of the inner wall of the sliding groove (6), a reinforcing plate (5) is rotatably installed at each corner of the top plate (4), slide shafts (56) and sliding blocks (57) are rotatably installed at the other end of the reinforcing plate (5) on both sides respectively, the sliding block (57) is slidably installed in the guide groove (61), a sliding seat (51) is arranged on one side of the slide shaft (56) and slidably installed in the sliding groove (6), a push-pull plate (55) is inserted and slidably installed in the sliding seat (51), a plurality of locking blocks (59) are arranged on one side of the push-pull plate (55), a plurality of locking grooves (62) are formed in one side of the inner wall of the sliding groove (6), and the locking blocks (59) are inserted into the locking grooves (62) and slidably fitted.

2. A two-sheave synchronized lift vehicle lift as claimed in claim 1, characterized in that, The sliding seat (51) is provided with an electric push rod (52), the output end of the electric push rod (52) is provided with a driving block (53), the bottom of the driving block (53) is provided with a guide block (58), a guide groove (54) is formed in the push-pull plate (55), and the guide block (58) is inserted into the guide groove (54) and slidably installed.

3. A two-sheave synchronous lift for a vehicle lift as set forth in claim 1, wherein, The lifting plate (31) is provided on the top of the scissors lifting mechanism (3), and the lifting plate (31) is inserted into the top plate (4) and slidably installed, a pair of contact plates (44) are symmetrically arranged in the top plate (4), and the contact plates (44) are arranged in the top plate (4) through four corner pressure sensors (46).

4. A two-sheave synchronous lift for a vehicle lift as set forth in claim 3, wherein, The lifting plate (31) is provided with uniformly distributed top columns (32) on the outer wall, and the contact plate (44) is provided with uniformly distributed and slidably fitted jack plugs (45) on the outer wall.

5. A two-sheave synchronous lift for a vehicle lift as set forth in claim 1, wherein, The push-pull plate (55) is provided with a plurality of locking clamping plates (510) on the other side, a matching groove (63) is formed in the other side of the inner wall of the sliding groove (6), and a plurality of uniformly distributed and obliquely arranged turning plates (65) are rotatably installed in the matching groove (63) through a fixed block (64).

6. A two-sheave synchronous lift for a vehicle lift as set forth in claim 5, wherein, A torsional spring is assembled between the turning plate (65) and the fixed block (64).

7. A two-sheave synchronous lift for a vehicle lift as set forth in claim 5, wherein, The matching groove (63) is provided with uniformly distributed limiting blocks (66) on the inner wall, and the limiting blocks (66) abut one side of the turning plate (65).

8. A two-sheave synchronous lift for a vehicle lift as set forth in claim 1, wherein, The top plate (4) is provided with a side plate (42) on both sides.

9. A two-sheave synchronous lift for a vehicle lift as set forth in claim 1, wherein, The top plate (4) is provided with a row of hooks (43) on both sides, and a transparent cloth (7) is hung on the row of hooks (43).

10. The dual scissor synchronous lift vehicle lift of claim 1, wherein, The reinforcing plate (5) is provided with a compression edge on the outer wall.

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