High-stability safety supporting device for lifting machine

Abstract

The invention relates to the technical field of lifting machines, and particularly discloses a high-stability safety supporting device for a lifting machine, which comprises a fixing frame, a bearing cross rod, a supporting frame, a gear, a rack and a driving cylinder, the fixing frame is mounted at the bottom of a workbench of the lifting machine, and the bearing cross rod is rotatably mounted at the bottom of the fixing frame through a bearing; the upper end of the supporting frame fixedly sleeves the outer side of the end of the bearing cross rod, the gear fixedly sleeves the outer side of the middle of the bearing cross rod, the rack is in meshed connection with the gear, and the driving air cylinder is in transmission connection with the rack. The fixing frame is installed at the bottom of the workbench of the lifting machine, the fixing frame is supported by the bearing cross rod and the supporting frame, the gravity of the workbench can be shared, the service life of the lifting machine is prolonged, the phenomenon that the lifting assembly is broken is reduced, the maintenance cost is reduced, the working stability of the lifting machine is improved, and the working efficiency of the lifting machine is improved. The balance of the workbench is kept, data are more accurate during four-wheel positioning, and errors are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of lifts, and in particular to a high-stability safety supporting device for lifts. Background Art

[0002] Car lifts are frequently used in the car inspection and maintenance industry. Car lifts are mainly used in car repair shops and 4S stores for vehicle overhaul, minor repairs and maintenance. The performance and quality of car lifts directly affect the personal safety of maintenance personnel and the safety of the vehicle being repaired.

[0003] After searching, the Chinese invention patent with patent application number CN202211494988.2 discloses a car scissor lift. The key points of its technical solution include a base, a workbench and two groups of scissor-type brackets. The ends of the two groups of scissor-type brackets are provided with synchronization rods. The scissor-type brackets include a first scissor arm and a second scissor arm. One end of the first scissor arm is hinged on the base, and the other end is provided with a roller A, which can be rolled against the workbench; one end of the second scissor arm is hinged on the workbench, and the other end is provided with a roller B, which can be rolled against the base. The scissor-type bracket is provided with a connecting rod, and a top rod is hinged on the connecting rod. The other end of the top rod is provided with a roller C that can slide against the base. A push cylinder is provided on the base, and a push rod is provided on it. The push rod can be against the top rod to push the top rod. A slot is also provided on the push rod. A fixing pin matching the slot is provided on the synchronization rod at the end of the first scissor arm on one side of the workbench. The static height of the invention after folding is lower, the overall thickness is thinner, and there is no need to adopt an underground installation method, which is more convenient to install and has lower installation cost.

[0004] Another example is the Chinese utility model patent with patent application number CN202222527936.2, which discloses a scissor-type car lift with adjustable lifting surface, comprising a pair of bases arranged side by side and a pair of lifting platforms respectively arranged horizontally above the two bases; the bases and the lifting platforms are connected by a lifting assembly; the two opposite ends of the lifting platform are slidably connected with extension plates; the two extension plates are connected by a power assembly; the power assembly is installed on the side of the lifting platform; the power assembly is used to drive the extension plates to move along the length direction of the lifting platform. The utility model realizes adjustment of the lifting surface of the lifting platform by slidingly connecting extension plates to the two opposite ends of the lifting platform, connecting the two extension plates by a power assembly, and using the power assembly to drive the extension plates to move along the length direction of the lifting platform, thereby effectively improving the scope of application and flexibility of the lift, and having a high market application value.

[0005] Although the above-mentioned existing car lifts can meet basic usage requirements, after lifting, they are all supported by the lifting components, and the lifting components bear the gravity of the car. After long-term use, the lifting components will produce mechanical fatigue due to long-term load-bearing, and the joints are prone to wear and breakage, which leads to a short service life and high maintenance costs, resulting in poor balance of the workbench, inaccurate leveling, inaccurate data during four-wheel alignment, prone to errors, and poor stability, posing a major safety hazard. Summary of the invention

[0006] The technical problem to be solved by the present invention is that, in view of the above-mentioned defects of the prior art, a high-stability safety support device for a lift is provided. By installing a fixed frame at the bottom of the workbench of the lift and supporting the fixed frame by a load-bearing cross bar and a support frame, the gravity of the workbench can be shared, the service life of the lift can be extended, the phenomenon of breakage of the lifting components can be reduced, and the maintenance cost can be reduced. Moreover, the working stability of the lift is improved, the balance of the workbench is maintained, and the data is more accurate when performing four-wheel alignment to avoid errors.

[0007] In order to solve the above technical problems, the technical solution of the present invention is:

[0008] A high-stability safety support device for a lift comprises a fixed frame, a load-bearing cross bar, a support frame, a gear, a rack and a driving cylinder, wherein the fixed frame is mounted on the bottom of a workbench of the lift, the load-bearing cross bar is rotatably mounted on the bottom of the fixed frame through a bearing, the upper end of the support frame is fixedly sleeved on the outer side of the end of the load-bearing cross bar, the gear is fixedly sleeved on the outer side of the middle part of the load-bearing cross bar, the rack is meshedly connected to the gear, and the driving cylinder is transmission-connected to the rack.

[0009] Preferably, the support frame includes a first supporting foot, a second supporting foot and a connecting cross bar, the connecting cross bar is integrally connected to the first supporting foot and the second supporting foot respectively, and the upper ends of the first supporting foot and the second supporting foot are fixedly connected to the load-bearing cross bar through a clamp.

[0010] Preferably, the first supporting foot and the second supporting foot are symmetrically arranged at the ends of the connecting cross bar, and the bottoms of the first supporting foot and the second supporting foot are both provided with adjusting screws.

[0011] Preferably, the bearing comprises a first bearing and a second bearing, the first bearing and the second bearing are symmetrically arranged at the bottom of the fixing frame, and the first bearing and the second bearing are fixedly connected to the fixing frame via a fixing ring.

[0012] Preferably, the first bearing and the second bearing are respectively sleeved on the outer sides of the ends of the bearing cross bar.

[0013] Preferably, a plurality of first gear teeth are arranged on the outer side of the gear, and a plurality of second gear teeth matching with the first gear teeth are arranged on the bottom of the rack.

[0014] Preferably, the rack is located above the gear, and the end of the rack is drivingly connected to the driving cylinder via a transmission shaft.

[0015] Preferably, the driving cylinder drives the transmission shaft to perform telescopic movement, and then drives the gear to rotate through the rack, and the gear drives the support frame to fold or unfold.

[0016] By adopting the above technical scheme, the present invention provides a high-stability safety support device for a lift, which has the following beneficial effects: the fixed frame in the high-stability safety support device is installed at the bottom of the workbench of the lift, the load-bearing cross bar is rotatably installed at the bottom of the fixed frame through a bearing, the upper end of the support frame is fixedly sleeved on the outer side of the end of the load-bearing cross bar, the gear fixedly sleeve is arranged on the outer side of the middle part of the load-bearing cross bar, the rack is meshed and connected with the gear, and the driving cylinder is transmission-connected with the rack. Under the drive of the driving cylinder, the support frame can be folded or unfolded, and when the workbench of the lift is raised, the support frame can be folded or unfolded. It can be unfolded and folded after being lowered, and is easy to use. By installing the fixing frame at the bottom of the workbench of the lift, and supporting the fixing frame with the load-bearing crossbar and the support frame, it can share the gravity of the workbench, extend the service life of the lift, reduce mechanical fatigue, reduce the wear and breakage of the joints of the lifting components, reduce maintenance costs, and improve the working stability of the lift, maintain the balance of the workbench, and have good safety. The data is more accurate when doing four-wheel alignment to avoid errors. It can be applied to various car lifts, has a wide range of applications, and has good market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0019] In the figure, 1-fixed frame, 2-bearing cross bar, 3-support frame, 4-gear, 5-rack, 6-driving cylinder, 7-first supporting foot, 8-second supporting foot, 9-connecting cross bar, 10-adjusting screw, 11-first bearing, 12-second bearing, 13-fixing ring, 14-first gear tooth, 15-second gear tooth, 16-transmission shaft, 17-workbench, 18-hoop. DETAILED DESCRIPTION

[0020] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] like Figure 1-2 As shown, the high-stability safety support device for the lift includes a fixed frame 1, a load-bearing crossbar 2, a support frame 3, a gear 4, a rack 5 and a driving cylinder 6. The fixed frame 1 is installed at the bottom of the workbench 17 of the lift, the load-bearing crossbar 2 is rotatably installed at the bottom of the fixed frame 1 through a bearing, the upper end of the support frame 3 is fixedly sleeved on the outer side of the end of the load-bearing crossbar 2, the gear 4 is fixedly sleeved on the outer side of the middle part of the load-bearing crossbar 2, the rack 5 is meshed and connected with the gear 4, and the driving cylinder 6 is transmission-connected with the rack 5. It can be understood that the fixed frame 1, the load-bearing crossbar 2, the support frame 3, the gear 4, and the rack 5 can all be made of stainless steel or steel, etc., and the present invention is not limited thereto.

[0024] Specifically, the support frame 3 includes a first supporting foot 7, a second supporting foot 8 and a connecting cross bar 9, the connecting cross bar 9 is integrally connected to the first supporting foot 7 and the second supporting foot 8 respectively, the upper ends of the first supporting foot 7 and the second supporting foot 8 are fixedly connected to the load-bearing cross bar 2 through a clamp 18; the first supporting foot 7 and the second supporting foot 8 are symmetrically arranged at the ends of the connecting cross bar 9, and the bottoms of the first supporting foot 7 and the second supporting foot 8 are provided with adjusting screws 10, and the heights of the adjusting screws 10 can be adjusted according to actual application requirements.

[0025] Specifically, the bearing includes a first bearing 11 and a second bearing 12, which are symmetrically arranged at the bottom of the fixing frame 1, and are fixedly connected to the fixing frame 1 through a fixing ring 13; the first bearing 11 and the second bearing 12 are respectively sleeved on the outer side of the end of the bearing cross bar 2; a plurality of first gear teeth 14 are arranged on the outer side of the gear 4, and a plurality of second gear teeth 15 matching the first gear teeth 14 are arranged at the bottom of the rack 5; the rack 5 is located above the gear 4, and the end of the rack 5 is connected to the driving cylinder 6 through a transmission shaft 16. It can be understood that the driving cylinder 6 drives the transmission shaft 16 to perform telescopic movement, and then drives the gear 4 to rotate through the rack 5, and the gear 4 drives the support frame 3 to fold or unfold.

[0026] It can be understood that under the drive of the driving cylinder 6, the support frame 3 can be folded or unfolded, in a horizontal position when folded and in a vertical position when unfolded. When the workbench 17 of the lift is raised, it is unfolded and when it is lowered, it can be folded, which is more convenient to use.

[0027] It can be understood that the present invention has a reasonable design and a unique structure. By installing the fixing frame 1 at the bottom of the workbench 17 of the lift, and supporting the fixing frame 1 by the load-bearing crossbar 2 and the support frame 3, the gravity of the workbench can be shared, the service life of the lift can be extended, mechanical fatigue can be reduced, and the wear and breakage of the joints of the lifting components can be reduced, the maintenance cost can be reduced, and the working stability of the lift can be improved. When in use, the vertical force is downward, so as to achieve double protection of the lift, keep the balance of the workbench, and have good safety. When doing four-wheel alignment, the data is more accurate and errors can be avoided. It can be applied to various car lifts, has a wide range of applications, and has good market prospects.

[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A high stability safety support device for a lift, characterized in that: It includes a fixed frame, a load-bearing cross bar, a support frame, a gear, a rack and a driving cylinder. The fixed frame is installed at the bottom of the workbench of the lift. The load-bearing cross bar is rotatably installed at the bottom of the fixed frame through a bearing. The upper end of the support frame is fixedly sleeved on the outer side of the end of the load-bearing cross bar. The gear is fixedly sleeved on the outer side of the middle part of the load-bearing cross bar. The rack is meshed with the gear, and the driving cylinder is transmission-connected with the rack.

2. The high stability safety support device for a lift according to claim 1, characterized in that: The support frame includes a first supporting foot, a second supporting foot and a connecting cross bar. The connecting cross bar is integrally connected to the first supporting foot and the second supporting foot respectively. The upper ends of the first supporting foot and the second supporting foot are fixedly connected to the load-bearing cross bar through a clamp.

3. The high stability safety support device for a lift according to claim 1, characterized in that: The first supporting foot and the second supporting foot are symmetrically arranged at the ends of the connecting cross bar, and the bottoms of the first supporting foot and the second supporting foot are both provided with adjusting screws.

4. The high-stability safety support device for a lift according to claim 1, characterized in that: The bearing comprises a first bearing and a second bearing. The first bearing and the second bearing are symmetrically arranged at the bottom of the fixing frame. The first bearing and the second bearing are fixedly connected to the fixing frame via a fixing ring.

5. The high-stability safety support device for a lift according to claim 1, characterized in that: The first bearing and the second bearing are respectively sleeved on the outer sides of the ends of the bearing cross bar.

6. The high-stability safety support device for a lift according to claim 1, characterized in that: A plurality of first gear teeth are arranged on the outer side of the gear, and a plurality of second gear teeth matched with the first gear teeth are arranged on the bottom of the rack.

7. The high stability safety support device for a lift according to claim 1, characterized in that: The rack is located above the gear, and the end of the rack is transmission-connected to the driving cylinder via a transmission shaft.

8. The high-stability safety support device for a lift according to claim 7, characterized in that: The driving cylinder drives the transmission shaft to perform telescopic movement, and then drives the gear to rotate through the rack, and the gear drives the support frame to fold or unfold.

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