A dual-cylinder hydraulic lifting car lift structure

Abstract

This invention discloses a dual-cylinder hydraulic lifting car lift structure, which relates to the field of hydraulic lifting technology. The dual-cylinder hydraulic lifting car lift structure includes a support cylinder, a hydraulic lifting mechanism, and a self-locking mechanism. The hydraulic lifting mechanism includes a rectangular frame and a support plate. A hydraulic cylinder is hinged to the top side of the rectangular frame, and an X-shaped bracket is hinged to the top of the rectangular frame. A guide rail is fixedly connected to the bottom of the support plate, and a connecting block is slidably installed inside the guide rail. The top of the X-shaped bracket is hinged to the inside of the connecting block. The self-locking mechanism includes a driver and a slide. A brake block is mounted on the surface of the driver, and a self-locking pin is fixedly connected to the bottom side of the slide. A pressure sensor is mounted on the top side of the brake block, and a limit hole is provided on the top of the brake block near the pressure sensor to achieve self-locking. The dual-cylinder hydraulic support facilitates self-locking, preventing accidental descent of the car lift and potential injury, ensuring safety and reliability.

Description

Technical Field

[0001] This invention relates to the field of hydraulic lifting technology, and in particular to a structure for a double-cylinder hydraulic lifting car hoist. Background Technology

[0002] Dual-cylinder hydraulic lifting car lifts are specialized lifting equipment commonly used in the automotive repair and maintenance field. They rely on the synchronous drive of dual hydraulic cylinders to achieve smooth lifting and lowering of cars. They are characterized by strong load-bearing capacity, smooth lifting and lowering, and convenient operation, and are widely used in the maintenance of cars, small trucks and other vehicles.

[0003] For example, a double-column car lift, as described in Chinese Patent Publication No. CN208087130U, includes two symmetrically arranged lifting mechanisms. Each lifting mechanism comprises a vertically placed column, a lifting shell slidably mounted on the column, a hydraulic cylinder fixed to the column, a bearing seat mounted on the output end of the hydraulic cylinder, a lifting pulley mounted on the bearing seat, a lifting cable, a hammer head fixed to the lifting shell, and a support rod assembly mounted on the hammer head. One end of the lifting cable, which passes over the lifting pulley, is fixed to the lifting shell, and the other end is fixed to the column. A car is placed on four support rod assemblies, supported by four rubber blocks. The support rods can be adjusted to a suitable angle and then fixed in place. After the car is positioned, the hydraulic cylinder pushes the bearing seat and lifting pulley upwards, the lifting cable pulls the lifting shell upwards, the hammer head moves upwards, and then the support rods also move upwards, thus lifting the car. When the car is lifted to the required maintenance height, the hydraulic cylinder stops supplying oil, and a suspension mechanism can then fix the car at the maintenance height.

[0004] According to existing technology references, a car can be lifted and lowered by extending and retracting a hydraulic cylinder. However, with such a design, the parking body is susceptible to gravity or external forces, which could cause it to fall unexpectedly, posing a significant safety hazard. Summary of the Invention

[0005] To solve the above technical problems, the present invention is implemented through the following technical solution: A dual-cylinder hydraulic lifting car lift structure includes: A support cylinder and a connecting seat fixedly connected to the bottom of the support cylinder, wherein a strip-shaped hole is provided in the middle of the surface of the support cylinder; A hydraulic lifting mechanism includes a rectangular frame and a support plate. The bottom of the rectangular frame is fixedly installed to the top of the connecting seat. A hydraulic cylinder is hinged to the top side of the rectangular frame. An X-shaped bracket is hinged to the top of the rectangular frame. A guide rail is fixedly connected to the bottom of the support plate. A connecting block is slidably installed inside the guide rail. The top of the X-shaped bracket is hinged to the inside of the connecting block. An inspection port is provided in the middle of the support plate. By extending the telescopic end of the hydraulic cylinder, an upward oblique pushing force can be applied to the connecting rod inside the X-shaped bracket. Combined with the fact that the X-shaped bracket itself is hinged, it can be expanded and contracted. When the X-shaped bracket is pushed upward obliquely, it expands. Under the sliding connection of the connecting block and guided by the guide rail, the X-shaped bracket can be extended to lift the support plate, thereby lifting the car on top of the support plate. Repairs are performed on the bottom of the car through the inspection port. At the same time, two symmetrical hydraulic cylinders are used to apply a pushing force to the two X-shaped brackets, making the X-shaped brackets support the support plate more stably and less prone to shaking. The self-locking mechanism includes a driver and a slide. The driver is installed inside the support cylinder, and the slide is fixedly installed on the side of the tray surface. The slide and the support cylinder are slidably installed through a strip hole. A brake block is installed on the surface of the driver. A self-locking pin is fixedly connected to the side of the bottom of the slide. A pressure sensor is installed on the side of the top of the brake block. A limit hole is opened on the top of the brake block near the pressure sensor. An auxiliary mechanism is installed on the side of the tray surface.

[0006] Furthermore, the telescopic end of the hydraulic cylinder is hinged to the connecting rod inside the X-shaped bracket, and the hydraulic cylinder is installed at an angle.

[0007] Furthermore, there are two X-shaped brackets, and the two X-shaped brackets are symmetrically installed along the inspection port, and the guide rails are evenly distributed on the bottom of the tray.

[0008] By retracting the extension end of the hydraulic cylinder, the extension end of the hydraulic cylinder applies a downward pulling force to the connecting rod on the inner side of the X-shaped bracket, which causes the X-shaped bracket to fold together. The pallet moves downward as the X-shaped bracket folds, thereby lowering the car.

[0009] Furthermore, there are four slides, and the four slides are evenly distributed on the side of the tray surface. The end of the slide away from the tray passes through the strip hole and extends into the interior of the support cylinder.

[0010] Furthermore, the self-locking pin is installed inside the support cylinder, the limiting hole is opened directly below the self-locking pin, and the surface of the brake block is slidably installed with respect to the inner wall of the support cylinder through a strip hole.

[0011] Furthermore, the driver includes a servo motor and a lead screw. The servo motor is fixedly installed at the bottom of the inner cavity of the support cylinder. The top end of the lead screw is rotatably installed between the top of the inner cavity of the support cylinder and the center of the brake block is threadedly installed between the lead screw and the center of the brake block. A controller is fixedly installed on the inner side of the support cylinder near the servo motor. The pressure sensor is electrically connected to the controller. When the pressure sensor detects no pressure, it controls the servo motor through the controller. The controller starts the servo motor to work. The rotation of the output end of the servo motor drives the lead screw to rotate. The brake block is threadedly installed with the lead screw, and under the guidance of the strip hole, the brake block moves upward. The brake block is always directly below the slide. When the pressure sensor is in contact with the bottom of the slide and detects pressure again, the controller controls the servo motor again to stop the servo motor from working. The self-locking pin is inserted into the limit hole to form a self-lock. The brake block supports the slide, preventing the support plate from accidentally falling downward and injuring people due to external force, ensuring safety and reliability.

[0012] Furthermore, the bottom end of the lead screw is fixedly installed to the output end of the servo motor via a coupling, and the servo motor is electrically connected to the controller.

[0013] Furthermore, the auxiliary mechanism includes a triangular prism, a contact block, and a U-shaped sleeve. The triangular prism is hinged to the support plate at one side of its surface. The contact block is mounted on the side of the support plate, with its bottom end extending to the bottom of the support plate. The U-shaped sleeve is fixedly mounted on the bottom of the support plate near the contact block. A strip-shaped groove is formed on the surface of the triangular prism near the U-shaped sleeve, and a drive slider is slidably mounted inside the strip-shaped groove. A wedge pusher is slidably connected inside the U-shaped sleeve. An alarm light is mounted on the top of the contact block. When the support plate moves upward... When the vehicle is moved, the car is lifted up, which moves the triangular prism upwards along with it, eliminating the need for the prism itself. This separates the prism from the ground, reducing obstruction in smaller repair areas and facilitating the movement of goods and the positioning of the vehicle by repair personnel. Simultaneously, the prism, under its own weight, rotates and naturally droops towards the wedge pusher, applying a pushing force to the wedge pusher, causing it to slide and insert directly under the contact block. This activates the warning light, constantly reminding repair personnel that the vehicle is being lifted and urging them to remain vigilant.

[0014] Furthermore, the end of the wedge pusher is hinged to the top of the drive slider, and the wedge pusher is mounted directly below the contact block.

[0015] As the pallet moves downwards, it pulls the triangular prism downwards as well. By having the bottom of the prism contact the ground, the prism rotates counterclockwise. The prism fills the step formed by the pallet and the ground, creating a slope that helps the car off the pallet.

[0016] Furthermore, the U-shaped sleeve is installed directly below the wedge pusher, and there are two alarm lights, which are symmetrically installed along the central axis of the tray.

[0017] The beneficial effects of the technical solution provided by this invention include: 1. By extending the telescopic end of the hydraulic cylinder, an upward oblique pushing force can be applied to the connecting rod inside the X-shaped bracket. Combined with the fact that the X-shaped bracket itself is hinged, it can be expanded and contracted. After being pushed upward obliquely, the X-shaped bracket expands. Under the sliding connection of the connecting block and guided by the guide rail, the X-shaped bracket can be extended to lift the pallet, thereby lifting the car on top of the pallet. At the same time, two symmetrical hydraulic cylinders apply a pushing force to the two X-shaped brackets, making the X-shaped bracket support the pallet more stable and less prone to shaking.

[0018] Second, by retracting the extension end of the hydraulic cylinder, the extension end of the hydraulic cylinder applies a downward pulling force to the connecting rod on the inner side of the X-shaped bracket, which causes the X-shaped bracket to fold together. The pallet will move downward as the X-shaped bracket folds, thereby lowering the car.

[0019] 3. When the pressure sensor detects no pressure, the controller controls the servo motor. The rotation of the servo motor's output end drives the lead screw to rotate, causing the brake block to move upward. The brake block is always directly below the slide, and the self-locking pin is inserted into the limit hole to form a self-lock. The brake block supports the slide, preventing the pallet from falling downward due to external force and injuring people. It is safe and reliable.

[0020] Fourth, when the car is lifted, the pallet can move the triangular prism upwards along with it, eliminating the need for the prism itself and separating it from the ground. In some small repair areas, this reduces obstruction from the prism, making it easier for repair personnel to move goods and locate the car. At the same time, the prism, under its own weight, rotates and hangs naturally towards the side closest to the wedge pusher. The prism exerts a pushing force on the wedge pusher, causing it to slide and insert directly under the contact block, which will then activate the warning light, constantly reminding repair personnel that the car has been lifted and to remain vigilant.

[0021] 5. When the pallet moves downward, it will move the triangular prism downward together. By using the bottom end of the triangular prism to contact the ground, the triangular prism will rotate counterclockwise. The triangular prism will fill the step formed by the pallet and the ground, forming a slope, which will help the car on the pallet to get off. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a dual-cylinder hydraulic lifting car lift provided in an embodiment of the present invention; Figure 2 This is a bottom view schematic diagram of a dual-cylinder hydraulic lifting car lift structure provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the connection structure between the hydraulic lifting mechanism and the connecting seat provided in an embodiment of the present invention; Figure 4 This is a bottom view schematic diagram of the hydraulic lifting mechanism provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the internal structure of the support cylinder cross-section provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the overall structure of the driver provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the connection structure between the auxiliary mechanism and the pallet provided in an embodiment of the present invention; Figure 8 This is a bottom view of the auxiliary mechanism provided in an embodiment of the present invention.

[0023] In the diagram: 1. Support cylinder; 2. Connecting seat; 3. Strip hole; 4. Hydraulic lifting mechanism; 5. Self-locking mechanism; 6. Auxiliary mechanism; 41. Rectangular frame; 42. Support plate; 43. Hydraulic cylinder; 44. X-shaped bracket; 45. Guide rail; 46. Connecting block; 47. Inspection port; 51. Driver; 52. Slide block; 53. Brake block; 54. Self-locking pin; 55. Pressure sensor; 56. Limit hole; 511. Servo motor; 512. Lead screw; 513. Controller; 61. Triangular prism; 62. Contact block; 63. U-shaped sleeve; 64. Strip groove; 65. Drive slider; 66. Wedge pusher; 67. Alarm light. Detailed Implementation

[0024] Example 1, see Figures 1-4 A technical solution is provided: A dual-cylinder hydraulic lifting car lift structure includes: The support cylinder 1 and the connecting seat 2 fixedly connected to the bottom of the support cylinder 1, and the support cylinder 1 has a strip hole 3 in the middle of its surface; The hydraulic lifting mechanism 4 includes a rectangular frame 41 and a support plate 42. The bottom of the rectangular frame 41 is fixedly installed to the top of the connecting seat 2. A hydraulic cylinder 43 is hinged to the top side of the rectangular frame 41. An X-shaped bracket 44 is hinged to the top of the rectangular frame 41. A guide rail 45 is fixedly connected to the bottom of the support plate 42. A connecting block 46 is slidably installed inside the guide rail 45. The top of the X-shaped bracket 44 is hinged to the inside of the connecting block 46. An inspection port 47 is provided in the middle of the support plate 42. The hydraulic cylinder 43 is activated to operate. By extending the telescopic end of the hydraulic cylinder 43, the connecting block 46 inside the X-shaped bracket 44 can be adjusted. The rod applies an upward pushing force, and the X-shaped bracket 44 is hinged, allowing it to expand and contract. When the X-shaped bracket 44 is pushed upward, it expands. Under the sliding connection of the connecting block 46 and guided by the guide rail 45, the X-shaped bracket 44 can extend, lifting the pallet 42 and raising the car on top of the pallet 42. This allows the car to be lifted and repaired from the bottom of the car through the inspection port 47. At the same time, two symmetrical hydraulic cylinders 43 apply a pushing force to the two X-shaped brackets 44, making the X-shaped brackets 44 support the pallet 42 more stably and less prone to shaking. The telescopic end of the hydraulic cylinder 43 is hinged to the connecting rod inside the X-shaped bracket 44. The hydraulic cylinder 43 is installed at an angle. By retracting the telescopic end of the hydraulic cylinder 43, the telescopic end of the hydraulic cylinder 43 applies a downward pulling force to the connecting rod inside the X-shaped bracket 44, which causes the X-shaped bracket 44 to fold together. The pallet 42 will move downward as the X-shaped bracket 44 folds, thereby lowering the car.

[0025] There are two X-shaped brackets 44, and the two X-shaped brackets 44 are symmetrically installed along the inspection port 47. The guide rails 45 are evenly distributed on the bottom of the tray 42.

[0026] Example 2, based on Example 1, see [link / reference] Figures 1 to 6 A technical solution is provided: The self-locking mechanism 5 includes a driver 51 and a slide 52. The driver 51 is installed inside the support cylinder 1, and the slide 52 is fixedly installed on the side of the surface of the support plate 42. The slide 52 and the support cylinder 1 are slidably installed through the strip hole 3. A brake block 53 is installed on the surface of the driver 51. A self-locking pin 54 is fixedly connected to the side of the bottom of the slide 52. A pressure sensor 55 is installed on the side of the top of the brake block 53. A limit hole 56 is opened on the top of the brake block 53 and near the pressure sensor 55. There are four slides 52, and the four slides 52 are evenly distributed on the side of the surface of the support plate 42. The end of the slide 52 away from the support plate 42 passes through the strip hole 3 and extends into the interior of the support cylinder 1.

[0027] The self-locking pin 54 is installed inside the support cylinder 1, and the limiting hole 56 is opened directly below the self-locking pin 54. The surface of the brake block 53 is slidably installed between the inner wall of the support cylinder 1 and the strip hole 3.

[0028] The driver 51 includes a servo motor 511 and a lead screw 512. The servo motor 511 is fixedly installed at the bottom of the inner cavity of the support cylinder 1. The top end of the lead screw 512 is rotatably installed between the top of the inner cavity of the support cylinder 1 and the center of the brake block 53 is threadedly installed between the lead screw 512 and the center of the brake block 53. A controller 513 is fixedly installed on the inner side of the support cylinder 1 near the servo motor 511. The pressure sensor 55 is electrically connected to the controller 513. When the support plate 42 moves upward, the slide block 52 moves upward with the support plate 42, causing the support plate 42 to separate from the pressure sensor 55. The support plate 42 presses against the pressure sensor 55. When the pressure sensor 55 detects no pressure, it transmits the collected no-pressure information to the controller 513 in the form of an electrical signal. The controller 513 receives and processes the information and controls the servo motor 511. The controller 513 starts the servo motor 511 to work, and the output of the servo motor 511 is transmitted through the output end. The rotation of the lead screw 512 causes it to rotate. The brake block 53 is threadedly installed with the lead screw 512, and guided by the slotted hole 3, the brake block 53 moves upwards, always positioned directly below the slide block 52. When the pressure sensor 55 contacts the bottom of the slide block 52 and detects pressure again, the controller 513 re-controls the servo motor 511, pausing its operation. The self-locking pin 54 inserts into the limiting hole 56, forming a self-lock. The brake block 53 supports the slide block 52, preventing the pallet 42 from accidentally falling downwards and injuring people, ensuring safety and reliability. After the car repair is completed, the operator manually turns on the servo motor 511, causing its output to rotate in the opposite direction, moving the brake block 53 downwards. The self-locking pin 54 separates from the limiting hole 56, releasing the self-lock and allowing the pallet 42 to move downwards, allowing the car to be lowered.

[0029] The bottom end of the lead screw 512 is fixedly installed to the output end of the servo motor 511 via a coupling, and the servo motor 511 is electrically connected to the controller 513.

[0030] Example 3, based on Examples 1 and 2, see below. Figures 1 to 8 A technical solution is provided: The auxiliary mechanism 6 includes a triangular prism 61, a contact block 62, and a U-shaped sleeve 63. The triangular prism 61 is hinged to the support plate 42 at one side of its surface. The contact block 62 is installed at one side of the support plate 42, with its bottom end extending to the bottom of the support plate 42. The U-shaped sleeve 63 is fixedly installed at the bottom of the support plate 42, close to the contact block 62. A strip groove 64 is formed on the surface of the triangular prism 61, near the side of the U-shaped sleeve 63. A drive slider 65 is slidably installed inside the strip groove 64. A wedge pusher 66 is slidably connected inside the U-shaped sleeve 63. An alarm light 67 is installed on the top of the contact block 62. When the support plate 42 moves upward... When the car is moved, it is lifted up, which can move the triangular prism 61 upwards along with it. The triangular prism 61 is no longer needed, and it is separated from the ground. In some small maintenance areas, this reduces the obstruction caused by the triangular prism 61, which helps maintenance personnel to move goods and locate the car. At the same time, the triangular prism 61 rotates and hangs down naturally towards the side close to the wedge pusher 66 due to its own weight. The triangular prism 61 applies a pushing force to the wedge pusher 66, causing the wedge pusher 66 to slide and insert directly under the contact block 62. This will activate the alarm light 67, constantly reminding maintenance personnel that the car has been lifted and to remain vigilant.

[0031] The end of the wedge pusher 66 is hinged to the top of the drive slider 65. The wedge pusher 66 is installed directly below the contact block 62. When the pallet 42 moves downward, the pallet 42 will drive the triangular prism 61 to move downward together. By using the bottom end of the triangular prism 61 to contact the ground, the triangular prism 61 rotates counterclockwise. The triangular prism 61 fills the step formed by the pallet 42 and the ground, forming a slope, which helps the car on the pallet 42 to get off.

[0032] The U-shaped sleeve 63 is installed directly below the wedge pusher 66. There are two alarm lights 67, and the two alarm lights 67 are symmetrically installed along the central axis of the support plate 42.

[0033] In use, the vehicle first contacts the ground through the triangular prism 61, and then uses the transition formed by the triangular prism 61 to drive the car from the triangular prism 61 onto the pallet 42, and then brakes the car. Furthermore, the operator activates the hydraulic cylinder 43 to perform the work. By extending the telescopic end of the hydraulic cylinder 43, an upward oblique pushing force can be applied to the connecting rod inside the X-shaped bracket 44. Combined with the fact that the X-shaped bracket 44 is hinged, it can be expanded and contracted. After being pushed upward obliquely, the X-shaped bracket 44 expands. Under the sliding connection of the connecting block 46 and guided by the guide rail 45, the X-shaped bracket 44 can be extended to lift the pallet 42, thereby lifting the car on top of the pallet 42. The car is then lifted and repaired from the bottom of the car through the inspection port 47. At the same time, the two symmetrical hydraulic cylinders 43 apply a pushing force to the two X-shaped brackets 44 together, making the X-shaped brackets 44 support the pallet 42 more stably and less prone to shaking. Simultaneously, as the support plate 42 moves upward, the slide block 52 moves upward along with it, causing the support plate 42 to separate from the pressure sensor 55. When the pressure sensor 55 detects no pressure, it transmits the collected no-pressure information to the controller 513 in the form of an electrical signal. The controller 513 receives and processes the information and controls the servo motor 511. The controller 513 starts the servo motor 511, and the rotation of the output of the servo motor 511 drives the lead screw 512 to rotate. The brake block 53 and the lead screw 512 are threaded together, and the brake block 53 moves upward under the guidance of the strip hole 3. The brake block 53 is always directly below the slide block 52. When the pressure sensor 55 is in contact with the bottom of the slide block 52 and the pressure sensor 55 detects pressure again, the controller 513 controls the servo motor 511 again to stop the servo motor 511 from working. The self-locking pin 54 is inserted into the limit hole 56 to form a self-lock. The brake block 53 supports the slide block 52 to prevent the support plate 42 from falling down unexpectedly and injuring people due to external force. It is safe and reliable. Furthermore, when the pallet 42 moves upward, the car is lifted up, which can move the triangular prism 61 upward along with it. This eliminates the need for the triangular prism 61, allowing it to separate from the ground. In some small repair areas, this reduces obstruction caused by the triangular prism 61, making it easier for repair personnel to move goods and locate the car. At the same time, the triangular prism 61 rotates and hangs down naturally towards the side closer to the wedge pusher 66 due to its own weight. The triangular prism 61 applies a pushing force to the wedge pusher 66, causing the wedge pusher 66 to slide and insert directly under the contact block 62. This will activate the warning light 67, constantly reminding the repair personnel that the car has been lifted up and to remain vigilant. The staff can then begin repairs on the car chassis from the bottom of the pallet 42. After the maintenance is completed, the staff manually turns on the servo motor 511 and the output end of the servo motor 511 rotates in the opposite direction, causing the brake block 53 to move downward and the self-locking pin 54 to separate from the limit hole 56. The self-locking of the self-locking pin 54 is released, which facilitates the downward movement of the pallet 42. By retracting the extension end of the hydraulic cylinder 43, the extension end of the hydraulic cylinder 43 applies a downward pulling force to the connecting rod on the inner side of the X-shaped bracket 44, which allows the X-shaped bracket 44 to fold together. The pallet 42 will move downward as the X-shaped bracket 44 folds, thereby lowering the car. The pallet 42 will move the triangular prism 61 downwards together. By using the bottom end of the triangular prism 61 to contact the ground, the triangular prism 61 will rotate counterclockwise. The triangular prism 61 will fill the step formed by the pallet 42 and the ground, forming a slope, which will help the car on the pallet 42 to get off. Moreover, when the triangular prism 61 is in a horizontal state, the triangular prism 61 will apply a pulling force to the wedge pusher 66, causing the wedge pusher 66 to separate from the contact block 62, and the alarm light 67 will be de-energized and turn off.

[0034] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A structure for a dual-cylinder hydraulic lifting car hoist, characterized in that, include: The support cylinder (1) and the connecting seat (2) fixedly connected to the bottom of the support cylinder (1) have a strip hole (3) in the middle of the surface of the support cylinder (1). The hydraulic lifting mechanism (4) includes a rectangular frame (41) and a support plate (42). The bottom of the rectangular frame (41) is fixedly installed with the top of the connecting seat (2). A hydraulic cylinder (43) is hinged to the side of the top of the rectangular frame (41). An X-shaped bracket (44) is hinged to the top of the rectangular frame (41). A guide rail (45) is fixedly connected to the bottom of the support plate (42). A connecting block (46) is slidably installed inside the guide rail (45). The top of the X-shaped bracket (44) is hinged to the inside of the connecting block (46). An inspection port (47) is opened in the middle of the support plate (42). The self-locking mechanism (5) includes a driver (51) and a slide (52). The driver (51) is installed inside the support cylinder (1). The slide (52) is fixedly installed on the side of the surface of the tray (42). The slide (52) and the support cylinder (1) are slidably installed through a strip hole (3). A brake block (53) is installed on the surface of the driver (51). A self-locking pin (54) is fixedly connected to the side of the bottom of the slide (52). A pressure sensor (55) is installed on the side of the top of the brake block (53). A limit hole (56) is opened on the top of the brake block (53) and near the pressure sensor (55). An auxiliary mechanism (6) is installed on the side of the surface of the tray (42).

2. The structure of a dual-cylinder hydraulic lifting car hoist according to claim 1, characterized in that: The telescopic end of the hydraulic cylinder (43) is hinged to the connecting rod inside the X-shaped bracket (44), and the hydraulic cylinder (43) is installed at an angle.

3. The structure of a dual-cylinder hydraulic lifting car hoist according to claim 1, characterized in that: There are two X-shaped brackets (44), and the two X-shaped brackets (44) are symmetrically installed along the inspection port (47). The guide rails (45) are evenly distributed on the bottom of the tray (42).

4. The structure of a dual-cylinder hydraulic lifting car hoist according to claim 1, characterized in that: There are four slides (52), and the four slides (52) are evenly distributed on the side of the surface of the support plate (42). The end of the slide (52) away from the support plate (42) passes through the strip hole (3) and extends into the interior of the support cylinder (1).

5. The structure of a dual-cylinder hydraulic lifting car hoist according to claim 1, characterized in that: The self-locking pin (54) is installed inside the support cylinder (1), the limiting hole (56) is opened directly below the self-locking pin (54), and the surface of the brake block (53) is slidably installed between the inner wall of the support cylinder (1) through the strip hole (3).

6. The structure of a dual-cylinder hydraulic lifting car hoist according to claim 1, characterized in that: The driver (51) includes a servo motor (511) and a lead screw (512). The servo motor (511) is fixedly installed at the bottom of the inner cavity of the support cylinder (1). The top end of the lead screw (512) is rotatably installed between the top end of the inner cavity of the support cylinder (1). The center of the brake block (53) is threadedly installed between the lead screw (512). A controller (513) is fixedly installed on the inner side of the support cylinder (1) near the servo motor (511). The pressure sensor (55) is electrically connected to the controller (513).

7. The structure of a dual-cylinder hydraulic lifting car hoist according to claim 6, characterized in that: The bottom end of the lead screw (512) is fixedly installed to the output end of the servo motor (511) via a coupling, and the servo motor (511) is electrically connected to the controller (513).

8. The structure of a dual-cylinder hydraulic lifting car lift according to claim 1, characterized in that: The auxiliary mechanism (6) includes a triangular prism (61), a contact block (62), and a U-shaped sleeve (63). The side of the surface of the triangular prism (61) is hinged to the tray (42). The contact block (62) is installed on the side of the surface of the tray (42). The bottom end of the contact block (62) extends to the bottom of the tray (42). The U-shaped sleeve (63) is fixedly installed on the bottom of the tray (42) and close to the contact block (62). A strip groove (64) is provided on the surface of the triangular prism (61) and on the side close to the U-shaped sleeve (63). A drive slider (65) is slidably installed inside the strip groove (64). A wedge pusher (66) is slidably connected inside the U-shaped sleeve (63). An alarm light (67) is installed on the top of the contact block (62).

9. The structure of a dual-cylinder hydraulic lifting car hoist according to claim 8, characterized in that: The end of the wedge pusher (66) is hinged to the top of the drive slider (65), and the wedge pusher (66) is mounted directly below the contact block (62).

10. The structure of a dual-cylinder hydraulic lifting car lift according to claim 8, characterized in that: The U-shaped sleeve (63) is installed directly below the wedge pusher (66), and there are two alarm lights (67), which are symmetrically installed along the central axis of the support plate (42).

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