A lifting system and a lifting device containing the same

Abstract

The utility model provides a lifting device including a lifting system, including a base and a lifting platform. The lifting system includes a lifting bracket, a lifting cylinder, and a safety locking device; the lifting bracket includes an upper bracket, a lower bracket, and an auxiliary bracket; the upper bracket is composed of an upper inner support arm and an upper outer support arm in an X shape; the lower bracket only includes one lower support arm; the upper end point of the upper inner support arm is connected to the lifting platform and can move relative to the lifting platform. The lifting platform of the lifting device provided by the utility model and the upper outer support arm of the lifting system have four fixed support points, which can ensure that the lifting platform is parallel to the ground, and the car is placed on the lifting platform more stably, which solves the technical defects of the existing single large scissor-type lifting device and the double scissor-arm lifting device that only have single-side fixed points.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to the field of heavy vehicle lifting, and in particular to a scissor-type folding heavy vehicle lifting device. Background Art

[0002] In recent years, with the significant increase in the number of cars in my country, the demand for after-sales services such as car repair and maintenance has also increased, especially the demand for car lifting functions has increased significantly.

[0003] The car lift is a device used to lift the car during the car maintenance process. When the car is driven to the lift station, it can be lifted to a certain height through manual operation to facilitate car maintenance. The lift plays a very important role in car maintenance and repair. Now the repair shops are equipped with lifts. The lift is a necessary equipment for car repair shops. The development of car lifts has brought great convenience to the lifting and support of vehicle maintenance, and its types and quantities are also increasing day by day.

[0004] The car lifting device refers to the car maintenance equipment used for lifting cars in the car maintenance industry. However, due to the large size and complex structure of the car lifting device itself, the product properties and quality of the lifting device will directly affect the property safety of the vehicle and the personal safety of the maintenance personnel. As a car maintenance and care equipment, the lifting device must be safe when in use, not only to protect the property safety of the vehicle, but also to protect the personal safety of the maintenance personnel.

[0005] The earlier appearance of a single large scissor-type lifting device in the field of automobile lifting devices is a lifting device in which the entire lifting device is composed of an X-shaped lifting bracket. For example, ZL202122196112.7 discloses a car lift that is easy to fix for vehicle maintenance, including a base, a lifting rod is arranged on the top of the base, and a hydraulic cylinder is arranged on the side of the base close to the lifting rod, the output end of the hydraulic cylinder is connected to the lifting rod, and the base, the lifting rod and the hydraulic cylinder are the basic components of the car lift. However, this single large scissor-type arm has only a fixed point on the right side, and a moving point on the left side. When the arm is working, the platform rises, the left side of the platform is suspended, the tire is pressed on the left side, the platform is deformed greatly, and can only be used to repair cars. The four-wheel alignment data is inaccurate, and the platform length is limited.

[0006] In order to overcome the above technical defects, a double scissor lifting device has been developed for automobile lifting devices, which realizes the lifting purpose of the scissor arm through an oil cylinder, and the scissor arm in the double scissor hydraulic lifting machine plays a supporting and lifting role. For example, ZL201520438999.8 and ZL201520439000.1 disclose a scissor hydraulic lifting machine, which is composed of an electric control box, a first scissor and a second scissor, and the scissor is composed of an upper support plate, an upper scissor arm, a lower scissor arm, a cylinder and an air pipe. The electric control box is connected to the first scissor and the second scissor through an air pipe. An extension plate is also installed at one end of the upper support plate to match the body length requirements of different models of vehicles. The lower scissor arm is composed of two cross-arranged scissor arms, and the two scissor arms can rotate relative to each other. One end of the lower scissor arm located at the front can be rotatably connected to the scissor arm mounting seat, and one end of the lower scissor arm located at the rear can be slidably connected in the slide groove of the slide groove plate.

[0007] However, facing the same problem, the above-mentioned double scissor arm lifting device can only be used to lift light vehicles, which are vehicles below 3 tons, and the lifting platform is also relatively short, usually not longer than the distance between the front and rear wheels of the vehicle. Moreover, each lifting device has four fulcrums at the top and bottom, two fixed fulcrums and two movable fulcrums. During the lifting process, there is also the problem of large platform deformation.

[0008] After investigation, it is found that there is no scissor-type lifting device for heavy vehicles in the prior art, nor is there a scissor-type lifting device using a single lower bracket, nor is there a vehicle lifting device using four lifting systems at the same time. Therefore, this application is proposed. Summary of the invention

[0009] The technical problem to be solved by the utility model is to provide a scissor-type lifting device that can be used for heavy vehicles. Compared with a single large scissor-type lifting device and a double scissor-type lifting device, the structural design of the lifting bracket is optimized. By using a lower single arm fixedly hinged with a base, not only the number of movable fulcrums is reduced, but also four lifting brackets can be used, thus overcoming the technical defect that the scissor-type lifting device has only a single-sided fixed point, so that the lifting platform can be more stable and the safety is significantly improved.

[0010] In order to achieve the above-mentioned purpose of the invention, the utility model provides a lifting system, including a lifting bracket, a lifting cylinder, and a safety locking device, wherein the lifting bracket includes an upper bracket, a lower bracket and an auxiliary bracket;

[0011] The upper bracket is composed of an upper inner support arm and an upper outer support arm in an X shape;

[0012] The upper inner support arm and the upper outer support arm are hinged via a pin shaft, and the upper inner support arm and the upper outer support arm can rotate around the pin shaft;

[0013] The lower end point of the upper outer support arm is hinged to the upper end point of the lower bracket via a pin; preferably, the lower end point of the upper outer support arm is hinged to the upper end point of the lower bracket via a pin; the upper outer support arm and the lower bracket can rotate around the pin;

[0014] One end of the auxiliary bracket is connected to the upper half of the lower bracket, and the other end is connected to the lower half of the upper inner support arm; the two end points of the auxiliary bracket are hinged to the bracket through a pin shaft and can rotate around the pin shaft;

[0015] The lifting cylinder includes a lifting hydraulic cylinder, a lifting pneumatic cylinder and the like which can provide a telescopic function.

[0016] Preferably, one end of the lifting cylinder is connected to the lower bracket, and the other end is connected to the lower half of the upper inner bracket; the two ends of the lifting cylinder are hinged to the bracket through a pin shaft and can rotate around the pin shaft;

[0017] Preferably, the lifting system also includes a lifting platform above the lifting bracket, one end of the lifting cylinder is connected to the upper part of the inner support arm, and the other end is connected and fixed to the lifting platform; preferably, one end of the lifting cylinder is connected to the upper end point of the inner support arm.

[0018] Preferably, a lifting cylinder eye is provided on the upper part of the upper inner support arm, one end of the lifting cylinder is connected to the lifting cylinder eye on the upper part of the upper inner support arm, and the other end is connected and fixed to the lifting platform;

[0019] Preferably, the lower bracket comprises only one lower arm.

[0020] Preferably, the lower bracket and the upper inner arm are both provided with a lifting cylinder lifting ear, one end of the lifting cylinder lifting ear is fixed to the bracket, and the other end is connected to the end point of the lifting cylinder, and the connection end with the lifting cylinder can rotate around one end of the lifting cylinder lifting ear.

[0021] Preferably, the piston rod of the lifting cylinder is connected to the lower half of the upper inner support arm, and the base of the lifting cylinder is connected to the lower bracket.

[0022] Preferably, the safety locking device comprises a lock box and a lock hook, the lock hook is hinged to the piston rod of the lifting cylinder through a pin, and the lock box is hinged to the base of the lifting cylinder through a pin.

[0023] The utility model also provides a lifting device including the lifting system, further including a base, a lifting platform, the upper end point of the upper inner support arm is hinged with the lifting platform through a pin shaft and can move relative to the lifting platform;

[0024] The upper end point of the upper outer support arm is hinged to the lifting platform through a pin shaft, and the upper outer support arm can rotate around the pin shaft;

[0025] The lower end of the lower support arm is hinged to the base through a pin shaft, and the lower support arm can rotate around the pin shaft.

[0026] Preferably, the lifting platform is provided with a slideway, and the upper end point of the upper inner support arm is connected to the slideway of the lifting platform and can move in the slideway;

[0027] Preferably, the base includes a limiting structure.

[0028] Beneficial technical effects of the utility model:

[0029] The lifting device provided by the utility model comprises four lifting systems, which are connected to the lifting platform using eight points, including four fixed points and four movable points. The four fixed points are connected to the lifting platform through connecting shafts, and the four movable points are arranged on a slideway assembled on the lifting platform through sliders, so that the four movable points can move horizontally and linearly.

[0030] The lifting platform of the lifting device provided by the utility model and the upper outer support arm of the lifting system have four fixed support points, that is, the four fixed support points on the outer side of the lifting platform can ensure that the lifting platform is parallel to the ground, and the car is placed on the lifting platform more stably, which solves the technical defects of the existing single large scissor-type lifting device and double scissor-arm lifting device that have only single-side fixed points.

[0031] When the lifting bracket and the lifting platform of the lifting device of the utility model meet the structural strength requirements, the lifting platform can be continuously lengthened, and can also be used in conjunction with multiple lifting systems at the same time. It can be used to lift heavy vehicles such as commercial vehicles, minibuses, public buses, engineering vehicles, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A side view of a lifting system in which a lifting hydraulic cylinder is connected to a lifting platform provided by the utility model;

[0033] Figure 2 Bottom view of the lifting system provided by the utility model in which the lifting hydraulic cylinder is connected to the lifting platform;

[0034] Figure 3 A lifting device including the lifting system provided by the utility model;

[0035] Figure 4 The utility model provides a lifting system in which a lifting hydraulic cylinder is connected to a lower bracket;

[0036] Figure 5 A lifting device including the lifting system provided by the utility model;

[0037] Note: 1-lower support arm, 2-upper outer support arm, 3-upper inner support arm, 4-auxiliary support, 5-lifting hydraulic cylinder, 6-safety locking device, 7-base, 8-lifting platform; Example

[0038] The lifting system provided by the utility model is as follows Figure 1-2 As shown, it comprises a lower support arm (1), an upper outer support arm (2), an upper inner support arm (3), an auxiliary support (4), a lifting hydraulic cylinder (5), a safety locking device (6), a base (7), and a lifting platform (8);

[0039] The upper part of the upper inner support arm (3) is hinged to one end of the safety locking device (6) via a connecting shaft and is provided with a sliding block;

[0040] The other end of the safety locking device (6) is hinged to the piston rod of the lifting hydraulic cylinder (5) via a connecting shaft;

[0041] The cylinder barrel of the lifting hydraulic cylinder (5) is connected to the upper lifting hydraulic cylinder lifting lug and fixed on the lifting platform (8);

[0042] The upper end shaft hole of the upper outer support arm (2) is hingedly fixed to the lifting platform (8) via a connecting shaft.

[0043] The upper inner support arm (3) and the upper outer support arm (2) are hinged at their central axis positions via a connecting shaft, so that the support arms are in an X shape.

[0044] The shaft hole at the lower end of the upper inner support arm (3) and the upper end of the auxiliary support (4) are hingedly connected via a connecting shaft.

[0045] The shaft hole at the lower end of the auxiliary bracket (4) and the shaft hole at the middle upper end of the lower support arm (1) are hingedly connected via a connecting shaft.

[0046] The upper end shaft hole of the lower support arm (1) and the lower end shaft hole of the upper outer support arm (2) are hingedly connected via a connecting shaft.

[0047] The shaft hole at the lower end of the lower support arm (1) and the base (7) are hinged and fixed via a connecting shaft, thereby stably supporting the lower support arm (1).

[0048] The base (7) is fixed to the ground with expansion bolts to ensure that the structure of the lower support arm (1) is stably supported during the ascending process.

[0049] The upper end axial hole of the upper outer support arm (2) and the lower end axial hole of the lower support arm (1) form two fixed fulcrums to ensure that the lifting system works stably during operation.

[0050] The lifting hydraulic cylinder (5) is extended through the hydraulic system to push the upper shaft of the upper inner support arm (3) to raise the lifting system, and pull the upper shaft of the upper inner support arm (3) to lower the lifting system;

[0051] The positions of the middle axis of the upper inner support arm (3) and the middle axis of the upper outer support arm (2), the lower axis of the upper outer support arm (2) and the upper axis of the lower support arm (1), the middle upper end axis of the lower support arm (1) and the lower axis of the auxiliary support (4), and the middle lower axis of the upper inner support arm (3) and the upper axis of the auxiliary support (4) form a parallelogram structure, which can stably extend and retract, so that the platform can be raised and lowered smoothly, thereby improving the accuracy of the lift.

[0052] Example

[0053] The lifting device provided by the utility model is as follows Figure 3 As shown, it includes four groups of lifting systems shown in Example 1, the base is fixed to the ground with expansion bolts, and the base is installed with a lower limit welding assembly for adjusting the lifting platform to be parallel to the ground.

[0054] Example

[0055] Another lifting system provided by the utility model is as follows Figure 4 As shown, it comprises a base (7), a lower support arm (1), an upper outer support arm (2), an upper inner support arm (3), an auxiliary support (4), a lifting hydraulic cylinder (5), a safety locking device (6), and a lifting platform (8);

[0056] The upper end connecting shaft of the upper inner support arm (3) is connected to the lifting platform (8) by a sliding block.

[0057] The upper end shaft hole of the upper outer support arm (2) is hingedly fixed to the lifting platform (8) via a connecting shaft.

[0058] The upper inner support arm (3) and the upper outer support arm (2) are hinged at their central axis positions via a connecting shaft, so that the support arms are in an X shape.

[0059] The lower end of the upper inner support arm (3) is hinged to the upper end of the auxiliary support (4) via a connecting shaft.

[0060] The lower shaft hole of the upper inner support arm (3) is hinged to the piston rod of the lifting hydraulic cylinder (5) and the upper locking hook of the safety locking device (6) through a connecting shaft.

[0061] The lower part of the cylinder barrel of the lifting hydraulic oil cylinder (5) is hinged to the central axis hole of the lower support arm (1) and the lock box of the safety locking device (6) through a connecting shaft.

[0062] The safety locking device (6) comprises a lock box and a lock hook, the lock hook is hinged to the piston rod of the lifting hydraulic cylinder (5) through a pin shaft, and the lock box is hinged to the base of the lifting hydraulic cylinder (5) through a pin shaft. The lock hook is welded with a rack, and the lock box is welded with a rack. The racks are in a meshing state when working, and the cylinder is controlled by the air circuit to achieve unlocking and locking, thereby playing the role of a safety lock.

[0063] The shaft hole at the upper end of the lower support arm (1) and the shaft hole at the lower end of the upper outer support arm (2) are hingedly connected via a connecting shaft.

[0064] The upper end shaft hole of the lower support arm (1) and the lower end shaft hole of the auxiliary bracket (4) are hingedly connected via a connecting shaft.

[0065] The shaft hole at the lower end of the lower support arm (1) is hinged to the base (7) via a connecting shaft.

[0066] The base (7) is fixed to the ground with expansion bolts to ensure structural support of the lower arm (1) during its ascent.

[0067] The upper end axial hole of the upper outer support arm (2) and the lower end axial hole of the lower support arm (1) form two fixed fulcrums to ensure that the lifting system works stably during operation.

[0068] The lifting hydraulic cylinder (5) is extended through the hydraulic system to push the lower axis of the upper inner arm (3). The middle axis of the upper inner arm (3) and the middle axis of the upper outer arm (2), the lower axis of the upper outer arm (2) and the upper axis of the lower arm (1), the middle upper end axis of the lower arm (1) and the lower axis of the auxiliary bracket (4), the middle lower axis of the upper inner arm (3) and the upper axis of the auxiliary bracket (4) form a parallelogram mechanism, which is stably extended and retracted, so that the platform can be lifted and lowered smoothly, and the lifting accuracy is improved.

[0069] Example

[0070] The lifting device provided by the utility model is as follows Figure 5 As shown, it includes four groups of lifting systems shown in Example 3, the base is fixed to the ground with expansion bolts, and the base is installed with a lower limit welding assembly for adjusting the lifting platform to be parallel to the ground.

[0071] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A lifting system, comprising a lifting bracket, a lifting cylinder and a safety locking device, characterized in that: The lifting bracket includes an upper bracket, a lower bracket and an auxiliary bracket; The upper bracket is composed of an upper inner support arm and an upper outer support arm in an X shape; The upper inner support arm and the upper outer support arm are hinged via a pin shaft, and the upper inner support arm and the upper outer support arm can rotate around the pin shaft; The lower part of the upper outer support arm is hinged to the upper part of the lower support through a pin shaft; One end of the auxiliary bracket is connected to the upper half of the lower bracket, and the other end is connected to the lower half of the upper inner support arm; The lifting cylinder is a lifting hydraulic cylinder.

2. The lifting system according to claim 1, characterized in that: One end of the lifting cylinder is connected to the lower bracket, and the other end is connected to the lower half of the upper inner bracket.

3. The lifting system according to claim 1, characterized in that: The lifting system also includes a lifting platform above the lifting bracket, one end of the lifting cylinder is connected to the upper part of the inner support arm, and the other end is connected to the lifting platform.

4. The lifting system according to any one of claims 1 to 3, characterized in that: The lower bracket comprises only one lower arm.

5. The lifting system according to claim 4, characterized in that: The lower bracket and the upper inner arm are both provided with a lifting cylinder lifting ear, one end of the lifting cylinder lifting ear is fixed on the bracket, and the other end is connected to the end point of the lifting cylinder, and the connection end with the lifting cylinder can rotate around one end of the lifting cylinder lifting ear.

6. The lifting system according to claim 2, characterized in that: The piston rod of the lifting cylinder is connected to the lower half of the upper inner support arm, and the base of the lifting cylinder is connected to the lower bracket.

7. The lifting system according to claim 4, characterized in that: The safety locking device comprises a lock box and a lock hook, the lock hook is connected to the piston rod of the lifting cylinder through a connecting shaft, and the lock box is connected to the base of the lifting cylinder through a connecting shaft.

8. A lifting device comprising the lifting system according to any one of claims 1 to 7, further comprising a base and a lifting platform, characterized in that: The upper end point of the upper inner support arm is connected to the lifting platform and can move relative to the lifting platform; The upper end point of the upper outer support arm is hinged to the lifting platform via a pin; The lower end point of the lower support arm is hinged to the base through a pin shaft.

9. The lifting device according to claim 8, characterized in that: The lifting platform is provided with a slideway, and the upper end point of the upper inner support arm is connected to the slideway of the lifting platform and can move in the slideway.

10. The lifting device according to claim 9, characterized in that: The base includes a limiting structure.

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