Pneumatic type trench lifting machine

Abstract

The utility model discloses a pneumatic type trench lifting machine which comprises a base, four driving mechanisms are symmetrically installed on the two sides of the bottom end of the base, and two second air cylinders are symmetrically installed on the two sides of the upper end of the base. The pneumatic type trench lifting machine has the advantages that the four driving mechanisms are symmetrically installed on the two sides of the bottom end of the base, so that when the pneumatic type trench lifting machine is used, the idler wheels can be made to rotate through pneumatic motors in the driving mechanisms, and therefore automatic movement of the pneumatic type trench lifting machine in a trench is achieved; meanwhile, a quick jacking mechanism is installed on each extension plate, and after the top end of the lifting girder makes contact with the bottom of the vehicle, a connecting plate can be moved upwards along a sliding cavity through a first air cylinder, so that an anti-skid pad is quickly jacked to the bottom of the vehicle through a supporting plate under the action of a spring rod, and the anti-skid effect of the vehicle is improved. And the bottom of the vehicle is rapidly jacked and limited, and the tedious operation of adjusting by manually screwing a screw rod is avoided.

Description

Technical Field

[0001] The utility model relates to the field of automobile maintenance equipment, in particular to a pneumatic trench lift. Background Art

[0002] Pneumatic transmission refers to a technology that uses compressed air as a power source to drive and control various mechanical equipment, thereby mechanizing and automating production processes. With the advancement of industrial mechanization and automation, pneumatic technology is increasingly being used in various fields. Pneumatic trench lifts, used in the automotive repair industry, combine pneumatic transmission with a lift, using air pressure as a motive force to lift the vehicle.

[0003] Typically, a pneumatic trench lift consists of a mounting base with two vertically parallel columns fixed to its top. Each column houses a vertically mounted cylinder, with its piston rod extending beyond the top of the column. An air compressor is attached to the bottom of the mounting base, connecting the two cylinders to provide power. The piston rods of the two cylinders are connected to a lifting beam. During operation, the lifting beam contacts the underside of the vehicle, extending the piston rods of the cylinders and driving the beam upward. This lifts the vehicle to a certain height, making it easier for workers to perform repairs on the underside.

[0004] Chinese patent publication number CN219239150U discloses a pneumatic trench lift. Although this type of lift can extend the extension rod by rotating the screw rod driven by a rotating shaft motor during use, so as to facilitate the lift to stably lift vehicles of different widths, this type of pneumatic trench lift is mainly a floor-standing structure. When lifting vehicles of different lengths, the lift is inconvenient to move within the trench, thereby failing to meet the need for convenient lifting of vehicles of different lengths. At the same time, when lifting the vehicle, the anti-skid pad is mainly brought into contact with the bottom of the vehicle by manually rotating the screw rod. Since manual rotation of the screw rod is a cumbersome operation, it is not convenient for the vehicle to quickly contact and limit the anti-skid pad during lifting. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a pneumatic trench lift which is capable of automatically moving the entire lift in the trench according to the length of the vehicle and can automatically push and tighten the protective pad to quickly contact the bottom of the vehicle during lifting.

[0006] The lifting mechanism is a kind of inertia lifting mechanism, and its lifting mechanism is a kind of inertia lifting mechanism, and its lifting mechanism is a kind of inertia lifting mechanism, and its lifting mechanism is a kind of inertia lifting mechanism.

[0007] By adopting the above technical solution, when it is necessary to adjust the position of the lift in the trench according to the length of the vehicle, the pneumatic motor in the driving mechanism is used to rotate the roller, thereby realizing the automatic movement of the pneumatic trench lift in the trench, so as to meet the convenient lifting needs of vehicles of different lengths; after the device moves to the specified position, it is only necessary to extend the extension plate under the action of the extension mechanism, and the lifting beam can be driven upward by cylinder 2 to lift the vehicle, wherein when lifting the vehicle, the connecting plate is moved upward along the sliding cavity by cylinder 1, and the anti-slip pad will be quickly pressed against the bottom of the vehicle through the support plate under the action of the spring rod, and the bottom of the vehicle can be quickly tightened and limited.

[0008] Furthermore, the extension mechanism also includes a dual-axis motor installed in the middle of the upper end of the lifting beam and screws installed on two power output shafts of the dual-axis motor.

[0009] By adopting the above technical solution, after the dual-axis motor drives the screw to rotate, the extension plate will slide out of the lifting beam under the action of thread transmission, so as to increase the overall support width of the lift.

[0010] Furthermore, the lifting beam has a concave structure at the location of the dual-axis motor, the dual-axis motor is connected to the screw coupling, and the screw is threadedly connected to the extension plate.

[0011] By adopting the above technical solution, it can be ensured that the screw can rotate conveniently under the action of the dual-axis motor.

[0012] Furthermore, an air compressor is installed at the upper end of the base between the two cylinders 2, and the air compressor is equipped with a control valve.

[0013] By adopting the above technical solution, the air compressor mainly provides a power source for the cylinder 1, the cylinder 2 and the pneumatic motor.

[0014] Furthermore, the pneumatic motor is connected to the base by bolts, and a power output shaft of the pneumatic motor passes through the side wall of the base and is connected to the roller bolts.

[0015] By adopting the above technical solution, it can be ensured that the pneumatic motor drives the roller to rotate conveniently, so as to conveniently adjust the position of the lift.

[0016] Furthermore, the fixed portion of the cylinder 1 is bolted to the extension plate, and the telescopic portion of the cylinder 1 passes through the bottom end of the sliding cavity and is slidably connected to the sliding cavity.

[0017] By adopting the above technical solution, the connecting plate can be automatically lifted under the action of the cylinder.

[0018] Furthermore, the spring rod fixing portion is welded to the connecting plate, the spring rod telescopic portion is connected to the supporting plate by bolts, and the anti-slip pad is bonded to the supporting plate.

[0019] By adopting the above technical solution, the spring rod can ensure that the anti-skid pad can be easily contacted with the uneven position of the bottom of the vehicle.

[0020] Furthermore, each of the support plates has two spring rods at the bottom end, and the size of the groove matches the size of the support plate and the anti-slip pad.

[0021] By adopting the above technical solution, the support plate and the anti-slip pad can be stored with the help of the ledge when not lifting.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The utility model symmetrically installs four driving mechanisms on both sides of the bottom end of the base, so that when the pneumatic trench lift is in use, the pneumatic motor in the driving mechanism can be used to rotate the roller, thereby realizing the automatic movement of the pneumatic trench lift in the trench, so as to meet the demand for convenient lifting of vehicles of different lengths. At the same time, by installing a quick-lifting mechanism on each extension plate, after the top end of the lifting beam contacts the bottom of the vehicle, the connecting plate can be moved upward along the sliding cavity by cylinder 1, so that the anti-slip pad can be quickly pressed against the bottom of the vehicle through the support plate under the action of the spring rod, and the bottom of the vehicle can be quickly pressed and limited, avoiding the tedious operation of manually adjusting by screwing the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a pneumatic trench lift described in the utility model;

[0025] Figure 2 This is a schematic structural diagram of the pneumatic trench lift described in the present invention after the extension plate is removed;

[0026] Figure 3 This is a left sectional view of the extension plate and quick-lift mechanism of the pneumatic trench lift described in the utility model;

[0027] Figure 4 This is a schematic diagram of the connection structure between the anti-slip pad, cylinder 1 and spring rod in a pneumatic trench lift described in the utility model;

[0028] Figure 5 It is a structural schematic diagram of an extension plate in a pneumatic trench lift described in the utility model.

[0029] The following are the descriptions of the reference numerals:

[0030] 1. Lifting beam; 2. Quick-lift mechanism; 201. Cylinder 1; 202. Anti-slip pad; 203. Support plate; 204. Spring rod; 205. Connecting plate; 206. Sliding cavity; 207. Slot; 3. Cylinder 2; 4. Base; 5. Driving mechanism; 501. Roller; 502. Pneumatic motor; 6. Air compressor; 7. Extension mechanism; 701. Dual-axis motor; 702. Screw; 703. Extension plate. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] like Figure 1-Figure 3As shown, a pneumatic trench lift in this embodiment includes a base 4, four driving mechanisms 5 are symmetrically installed on both sides of the bottom end of the base 4, two cylinders 2 3 are symmetrically installed on both sides of the upper end of the base 4, and the tops of the two cylinders 2 3 are commonly connected to a lifting beam 1, and an extension mechanism 7 is installed on the lifting beam 1. The extension mechanism 7 includes two extension plates 703 symmetrically installed on both sides of the lifting beam 1, and each extension plate 703 is installed with a quick-top mechanism 2, the driving mechanism 5 includes rollers 501 installed at the four corners of the bottom end of the base 4 and an air motor 502 installed on the inner side of the base 4 facing the rollers 501, the quick-top mechanism 2 includes two sliding cavities 206 symmetrically opened on the extension plate 703, a connecting plate 205 installed in each sliding cavity 206, a spring rod 204 installed in the middle of the upper end of the connecting plate 205, a supporting plate 203 installed at the top of the spring rod 204, and an anti-slip pad 202 installed at the top of the supporting plate 203. The pneumatic cylinder 201 is symmetrically installed at the bottom end of the extension plate 703 facing the sliding cavity 206, and the groove 207 is opened at the top of the extension plate 703 for accommodating the support plate 203 and the anti-skid pad 202. When the position of the lifter in the trench needs to be adjusted according to the length of the vehicle, the pneumatic motor 502 in the drive mechanism 5 is used to rotate the roller 501, thereby realizing the automatic movement of the pneumatic trench lift in the trench, so as to meet the convenient lifting needs of vehicles of different lengths; after the device moves to the specified position, it is only necessary to extend the extension plate 703 under the action of the extension mechanism 7, and the lifting beam 1 can be driven upward by the cylinder 2 3 to lift the vehicle. When lifting the vehicle, the connecting plate 205 is moved upward along the sliding cavity 206 by the cylinder 1 201, and the anti-skid pad 202 will be quickly pressed against the bottom of the vehicle through the support plate 203 under the action of the spring rod 204, thereby quickly tightening and limiting the bottom of the vehicle.

[0033] like Figure 1 、 Figure 2 and Figure 5 As shown, in this embodiment, the extension mechanism 7 also includes a dual-axis motor 701 installed in the middle of the upper end of the lifting beam 1 and a screw 702 installed on the two power output shafts of the dual-axis motor 701. After the dual-axis motor 701 drives the screw 702 to rotate, the extension plate 703 will slide out of the lifting beam 1 under the action of the threaded transmission, so as to increase the overall support width of the lift.

[0034] like Figure 1-Figure 2As shown, in this embodiment, the lifting beam 1 has a concave structure at the dual-axis motor 701, the dual-axis motor 701 is connected to the screw 702 by a coupling, and the screw 702 is threadedly connected to the extension plate 703, which can ensure that the screw 702 can rotate conveniently under the action of the dual-axis motor 701. An air compressor 6 is also installed between the two cylinders 2 3 at the upper end of the base 4. The air compressor 6 has a control valve. The air compressor 6 mainly provides power for cylinder 1 201, cylinder 2 3 and pneumatic motor 502.

[0035] like Figure 1-Figure 2 As shown, in this embodiment, the pneumatic motor 502 is bolted to the base 4, and the power output shaft of the pneumatic motor 502 passes through the side wall of the base 4 and is bolted to the roller 501, which can ensure that the pneumatic motor 502 drives the roller 501 to rotate conveniently, so as to conveniently adjust the position of the lift. The fixed part of the cylinder 201 is bolted to the extension plate 703, and the telescopic part of the cylinder 201 passes through the bottom end of the sliding cavity 206 and is slidably connected to the sliding cavity 206. Under the action of the cylinder 201, the connecting plate 205 can be automatically lifted.

[0036] like Figure 1 、 Figure 3 and Figure 4 As shown, in this embodiment, the fixed portion of the spring rod 204 is welded to the connecting plate 205, the telescopic portion of the spring rod 204 is bolted to the support plate 203, and the anti-skid pad 202 is bonded to the support plate 203. The spring rod 204 ensures that the anti-skid pad 202 can easily contact the uneven areas on the bottom of the vehicle. Each support plate 203 has two spring rods 204 at the bottom, and the sling groove 207 is sized to match the size of the support plate 203 and the anti-skid pad 202. When not lifting, the sling groove 207 can be used to store the support plate 203 and the anti-skid pad 202.

[0037] The specific implementation process of this embodiment is as follows: when it is necessary to lift the vehicle, first, according to the length of the vehicle, the pneumatic motor 502 in the driving mechanism 5 is used to rotate the roller 501, thereby realizing the automatic movement of the pneumatic trench lift in the trench, so as to meet the convenient lifting needs of vehicles of different lengths. After the device moves to the specified position, it is only necessary to extend the extension plate 703 under the action of the extension mechanism 7, and the lifting beam 1 can be driven upward by the cylinder 2 3 to lift the vehicle. When lifting the vehicle, the connecting plate 205 is moved upward along the sliding cavity 206 by the cylinder 1 201, and the anti-slip pad 202 will be quickly pressed against the bottom of the vehicle through the support plate 203 under the action of the spring rod 204, and the bottom of the vehicle is quickly tightened and limited.

[0038] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pneumatic trench lift, characterized by: The invention comprises a base (4), four driving mechanisms (5) are symmetrically installed on both sides of the bottom end of the base (4), two cylinders (3) are symmetrically installed on both sides of the upper end of the base (4), the tops of the two cylinders (3) are commonly connected to a lifting beam (1), an extension mechanism (7) is installed on the lifting beam (1), the extension mechanism (7) comprises two extension plates (703) symmetrically installed on both sides of the lifting beam (1), each of the extension plates (703) is installed with a quick-lift mechanism (2), the driving mechanism (5) comprises rollers (501) installed at the four corners of the bottom end of the base (4) and a pneumatic actuator installed on the inner side of the base (4) facing the rollers (501). The motor (502) comprises two sliding cavities (206) symmetrically arranged on the extension plate (703), a connecting plate (205) installed in each of the sliding cavities (206), a spring rod (204) installed in the middle of the upper end of the connecting plate (205), a supporting plate (203) installed at the top end of the spring rod (204), an anti-slip pad (202) installed at the top end of the supporting plate (203), a cylinder (201) symmetrically arranged at the bottom end of the extension plate (703) facing the sliding cavity (206), and a slot (207) arranged at the top end of the extension plate (703) for accommodating the supporting plate (203) and the anti-slip pad (202).

2. A pneumatic trench lift according to claim 1, characterized in that: The extension mechanism (7) further comprises a dual-axis motor (701) mounted in the middle of the upper end of the lifting beam (1) and screws (702) mounted on two power output shafts of the dual-axis motor (701).

3. A pneumatic trench lift according to claim 2, characterized in that: The lifting beam (1) has a concave structure at the location of the dual-axis motor (701), the dual-axis motor (701) is connected to the screw (702) by a coupling, and the screw (702) is threadedly connected to the extension plate (703).

4. The pneumatic trench lift according to claim 1, characterized in that: An air compressor (6) is installed on the upper end of the base (4) between the two cylinders (3), and the air compressor (6) is equipped with a control valve.

5. The pneumatic trench lift according to claim 1, characterized in that: The pneumatic motor (502) is bolted to the base (4), and a power output shaft of the pneumatic motor (502) passes through a side wall of the base (4) and is bolted to the roller (501).

6. The pneumatic trench lift according to claim 1, characterized in that: The fixed portion of the cylinder one (201) is bolted to the extension plate (703), and the telescopic portion of the cylinder one (201) passes through the bottom end of the sliding cavity (206) and is slidably connected to the sliding cavity (206).

7. The pneumatic trench lift according to claim 1, characterized in that: The fixing portion of the spring rod (204) is welded to the connecting plate (205), the telescopic portion of the spring rod (204) is bolted to the supporting plate (203), and the anti-slip pad (202) is bonded to the supporting plate (203).

8. The pneumatic trench lift according to claim 1, characterized in that: Each supporting plate (203) has two spring rods (204) at the bottom end, and the size of the groove (207) matches the size of the supporting plate (203) and the anti-slip pad (202).

Images