Lifting machine corbel device

Abstract

The invention discloses a lifting machine corbel device, and relates to the technical field of lifting machine corbels. Comprising a machine base, lifting columns which are symmetrically arranged are fixedly installed on the machine base, lifting grooves are formed in the two lifting columns, lifting arms are installed in the lifting grooves in a sliding mode, driving assemblies are arranged on the lifting arms, and front supporting arms and rear supporting arms are arranged on the driving assemblies; an auxiliary assembly is arranged between the lifting arm and the front supporting arm and between the lifting arm and the rear supporting arm, the stability between the front supporting arm and the rear supporting arm is guaranteed through the auxiliary assembly, the driving assembly comprises a front auxiliary frame and a rear auxiliary frame which are fixedly installed on the front supporting arm, and a front positioning shaft and a rear positioning shaft are fixedly installed on the front supporting arm and the rear supporting arm respectively. And a front gear is fixedly mounted on the front positioning shaft. Through cooperative use of the driving assembly and the auxiliary assembly, the stability, synchronism and safety of the lifting machine corbel in the unfolding process are effectively improved, and high efficiency and reliability during working are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting machine support arms, and specifically relates to a lifting machine support arm device. Background Art

[0002] An automobile lift is a device used to lift an automobile during the automobile repair process. The automobile is driven to the lift station, and the automobile is lifted to a certain height through the support arm device, which is convenient for the repair or parking of the automobile.

[0003] In the prior art, a Chinese patent with the publication number "CN218434749U" discloses a lifting machine support arm device. By setting an adjustment mechanism, the steps of manual operation by maintenance personnel are reduced, the automation of the support arm is improved, and the labor intensity of maintenance personnel is reduced. By setting a fall prevention mechanism and a support mechanism, the working intensity of the support arm is reduced through the support mechanism, the service life of the support arm is extended, and at the same time, the safety of the device is increased through the fall prevention mechanism, ensuring the life safety of maintenance personnel. It solves the problems that the controllability of the support arm in the existing lifting machine device is low, and manual adjustment of the position state of the support arm by maintenance personnel is still required during the operation of supporting the automobile, which is troublesome. At the same time, the device extends the service life of the support arm by changing and adding the support arm structure, but too many structures may increase the safety hazards of the support arm.

[0004] In the above-described solution, during the process of unfolding the lifting arm, it is necessary to simultaneously start two hydraulic cylinders to drive the two support arms to unfold respectively. Since there will be slight differences in the working speed, pressure or mechanical structure of each hydraulic cylinder, the unfolding of the two support arms will be out of sync. And in some existing lifting machine devices, most of them adopt the unilateral unfolding method. However, in this unilateral unfolding method, the unfolding angles of the two support arms will be different. When the unfolding angles of the two support arms are different, the effect of uniformly supporting the automobile cannot be effectively achieved, thus affecting the safety and operation effect of the lift. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a lifting machine support arm device, which solves the problems mentioned in the above background art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0007] A lifting machine support arm device includes a machine base, symmetrically arranged lifting columns are fixedly installed on the machine base, lifting grooves are opened in the two lifting columns, a lifting arm is slidably installed inside the lifting grooves, a driving assembly is arranged on the lifting arm, and a front support arm and a rear support arm are arranged on the driving assembly;

[0008] An auxiliary component is provided between the lifting arm, the front support arm and the rear support arm, and the stability between the front support arm and the rear support arm is ensured through the auxiliary component.

[0009] Preferably, the driving component includes a front auxiliary frame and a rear auxiliary frame fixedly installed on the front support arm. A front positioning shaft and a rear positioning shaft are respectively and fixedly installed on the front support arm and the rear support arm. A front gear is fixedly installed on the front positioning shaft, and a rear gear is fixedly installed on the rear positioning shaft.

[0010] Preferably, an installation groove is formed in the lifting arm. A hydraulic cylinder is fixedly installed inside the installation groove. An adjusting block is fixedly installed at the output end of the hydraulic cylinder. A U-shaped cross bar is fixedly installed on the adjusting block. A symmetrically arranged tooth block group is fixedly installed on the inner side surface of the U-shaped cross bar. A limiting groove is formed in the inner side surface of the installation groove, and a limiting block is fixedly installed on the adjusting block.

[0011] Preferably, the front support arm is rotatably installed on the front auxiliary frame through the front positioning shaft, and the rear support arm is rotatably installed on the rear auxiliary frame through the rear positioning shaft. The U-shaped cross bar is located outside the front gear and the rear gear. The front gear and the rear gear are respectively meshed with the two groups of tooth block groups on the U-shaped cross bar, and the limiting block is slidably installed in the limiting groove.

[0012] Preferably, the auxiliary includes a front U-shaped frame fixedly installed on the front support arm and a rear U-shaped frame fixedly installed on the rear support arm. A front stabilizing rod and a rear stabilizing rod are respectively rotatably installed on the front U-shaped frame and the rear U-shaped frame. A connecting rod is fixedly installed on the U-shaped cross bar, and an L-shaped fixed rod is fixedly installed on the connecting rod.

[0013] Preferably, a connecting frame is fixedly installed on the L-shaped fixed rod. Connecting grooves are formed at both ends of the connecting frame. Symmetrically arranged auxiliary rods are fixedly installed on the side end surface of the connecting frame.

[0014] Preferably, one end of the front stabilizing rod away from the front U-shaped frame is rotatably connected to one of the connecting grooves on the connecting frame, and one end of the rear stabilizing rod away from the rear U-shaped frame is rotatably connected to the other connecting groove on the connecting frame. The front stabilizing rod and the rear stabilizing rod are arranged obliquely, and one end of the auxiliary rod away from the connecting frame extends into the interior of the front support arm.

[0015] Preferably, a front sliding rod and a rear sliding rod are fixedly installed on the connecting frame. A front sliding groove is formed in the front support arm, and a rear sliding groove is formed in the rear support arm. One end of the front sliding rod away from the connecting frame extends into the interior of the front sliding groove, and the two are slidably connected. One end of the rear sliding rod away from the connecting frame extends into the interior of the rear sliding groove, and the two are slidably connected.

[0016] The present invention provides a lifting machine support arm device. Compared with the prior art, the following beneficial effects are achieved:

[0017] 1. In the present invention, when it is necessary to deploy the front support arm and the rear support arm on the lifting arm, the hydraulic cylinder drives the adjusting block to slide in the installation groove. Limited by the limiting block and the limiting groove, the adjusting block will synchronously drive the U-shaped cross bar to move horizontally. The two groups of tooth block groups on the U-shaped cross bar are respectively engaged with the front gear and the rear gear, and the front positioning shaft and the rear positioning shaft on the front gear and the rear gear synchronously drive the front support arm and the rear support arm to expand outwards. Through the synchronous expansion of the front support arm and the rear support arm, the error caused by unilateral expansion is avoided, ensuring the stability and safety of the lifting arm during operation;

[0018] 2. In the present invention, when the U-shaped cross bar moves horizontally, it will synchronously drive the connecting rod to move synchronously. The L-shaped fixed rod on the connecting rod will drive the connecting frame to move horizontally. The front stabilizing rod and the rear stabilizing rod on the connecting frame will cooperate with the front U-shaped frame and the rear U-shaped frame, and will expand synchronously with the front support arm and the rear support arm. Using the principle of triangular stability, the stability of the front support arm and the rear support arm after expansion is ensured. At the same time, the front stabilizing rod and the rear stabilizing rod are used to ensure that the expansion angles between the front support arm and the rear support arm are the same, effectively enhancing the practicability of the support arm of the lift;

[0019] 3. In the present invention, when the connecting frame moves horizontally, it will synchronously drive the front sliding rod and the rear sliding rod to move synchronously. The front sliding rod is limited and slides by the front sliding groove on the front support arm, and the rear sliding rod is limited and slides by the rear sliding groove on the rear support arm, effectively enhancing the stability of the front support arm and the rear support arm during expansion, ensuring that the front support arm and the rear support arm are always under control, avoiding irregular movement or distortion, and further enhancing the stability of the front support arm and the rear support arm during expansion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a schematic diagram of the structure of the lifting arm in the present invention;

[0022] Figure 3 is a schematic diagram of the structure of the drive assembly in the present invention;

[0023] Figure 4 is a schematic diagram of the structure of the front support arm and the rear support arm in the present invention;

[0024] Figure 5 is a schematic diagram of the structure of the connecting frame in the present invention.

[0025] In the figure: 1, machine base; 2, lifting column; 3, lifting groove; 4, lifting arm; 5, front support arm; 6, rear support arm; 7, front auxiliary frame; 8, rear auxiliary frame; 9, front positioning shaft; 10, rear positioning shaft; 11, front gear; 12, rear gear; 13, mounting groove; 14, hydraulic cylinder; 15, adjusting block; 16, U-shaped cross bar; 17, tooth block group; 18, limit groove; 19, limit block; 20, front U-shaped frame; 21, rear U-shaped frame; 22, front stabilizing rod; 23, rear stabilizing rod; 24, connecting rod; 25, L-shaped fixed rod; 26, connecting frame; 27, connecting groove; 28, auxiliary rod; 29, front sliding rod; 30, rear sliding rod; 31, front sliding groove; 32, rear sliding groove. Detailed implementation manners

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1-5 , the present invention is a lifting machine support arm device, including a machine base 1, symmetrically arranged lifting columns 2 are fixedly installed on the machine base 1, lifting grooves 3 are opened on the two lifting columns 2, a lifting arm 4 is slidably installed inside the lifting grooves 3, a driving assembly is arranged on the lifting arm 4, and a front support arm 5 and a rear support arm 6 are arranged on the driving assembly. Among them, the lifting column 2 is a common mechanism on the lifting machine. Since the principle of this lifting is a well-known technology in the art, no specific description will be made here;

[0028] The driving assembly includes a front auxiliary frame 7 and a rear auxiliary frame 8 fixedly installed on the front support arm 5. A front positioning shaft 9 and a rear positioning shaft 10 are respectively and fixedly installed on the front support arm 5 and the rear support arm 6. A front gear 11 is fixedly installed on the front positioning shaft 9, and a rear gear 12 is fixedly installed on the rear positioning shaft 10. An installation groove 13 is formed on the lifting arm 4, a hydraulic cylinder 14 is fixedly installed inside the installation groove 13, an output end of the hydraulic cylinder 14 is fixedly installed with an adjustment block 15, a U-shaped cross bar 16 is fixedly installed on the adjustment block 15, a symmetrically arranged tooth block group 17 is fixedly installed on an inner side surface of the U-shaped cross bar 16, a limiting groove 18 is formed on an inner side surface of the installation groove 13, a limiting block 19 is fixedly installed on the adjustment block 15. The front support arm 5 is rotatably installed on the front auxiliary frame 7 through the front positioning shaft 9, the rear support arm 6 is rotatably installed on the rear auxiliary frame 8 through the rear positioning shaft 10. The position of the U-shaped cross bar 16 is outside the front gear 11 and the rear gear 12. The front gear 11 and the rear gear 12 are respectively engaged with the two groups of tooth block groups 17 on the U-shaped cross bar 16. The limiting block 19 is slidably installed with the limiting groove 18. By the limiting sliding of the limiting block 19 in the limiting groove 18, it is ensured that the adjustment block 15 can move in the horizontal direction, and at the same time, it is ensured that the adjustment block 15 will not fall off from the installation groove 13.

[0029] In this embodiment, when it is necessary to expand the front support arm 5 and the rear support arm 6 on the lifting arm 4, the hydraulic cylinder 14 drives the adjustment block 15 to slide in the installation groove 13. Limited by the limiting block 19 and the limiting groove 18, the adjustment block 15 will synchronously drive the U-shaped cross bar 16 to move horizontally. By using the two groups of tooth block groups 17 on the U-shaped cross bar 16 to be respectively engaged with the front gear 11 and the rear gear 12, and using the front positioning shaft 9 and the rear positioning shaft 10 on the front gear 11 and the rear gear 12 to synchronously drive the front support arm 5 and the rear support arm 6 to expand outwards. Through the synchronous expansion of the front support arm 5 and the rear support arm 6, the error caused by unilateral expansion is avoided, and the stability and safety of the lifting arm 4 during operation are ensured.

[0030] An auxiliary component is provided between the lifting arm 4 and the front support arm 5 and the rear support arm 6. Through the auxiliary component, the stability between the front support arm 5 and the rear support arm 6 is ensured. The auxiliary includes a front U-shaped frame 20 fixedly installed on the front support arm 5 and a rear U-shaped frame 21 on the rear support arm 6. A front stabilizing rod 22 and a rear stabilizing rod 23 are respectively rotatably installed on the front U-shaped frame 20 and the rear U-shaped frame 21. A connecting rod 24 is fixedly installed on the U-shaped cross bar 16. An L-shaped fixed rod 25 is fixedly installed on the connecting rod 24. A connecting frame 26 is fixedly installed on the L-shaped fixed rod 25. Connecting grooves 27 are provided at both ends of the connecting frame 26. Symmetrically arranged auxiliary rods 28 are fixedly installed on the side end face of the connecting frame 26. One end of the front stabilizing rod 22 away from the front U-shaped frame 20 is rotatably connected to one of the connecting grooves 27 on the connecting frame 26. One end of the rear stabilizing rod 23 away from the rear U-shaped frame 21 is rotatably connected to the other connecting groove 27 on the connecting frame 26. The front stabilizing rod 22 and the rear stabilizing rod 23 are arranged obliquely, and the end of the auxiliary rod 28 away from the connecting frame 26 extends into the interior of the front support arm 5, and the front stabilizing rod 22 and the rear stabilizing rod 23 have the same inclination angle.

[0031] In this embodiment, when the U-shaped cross bar 16 moves horizontally, it will synchronously drive the connecting rod 24 to move synchronously. The L-shaped fixed rod 25 on the connecting rod 24 will drive the connecting frame 26 to move horizontally. The front stabilizing rod 22 and the rear stabilizing rod 23 on the connecting frame 26 will cooperate with the front U-shaped frame 20 and the rear U-shaped frame 21 to unfold synchronously with the front support arm 5 and the rear support arm 6. Using the principle of triangular stability, the stability of the front support arm 5 and the rear support arm 6 after unfolding is ensured. At the same time, the front stabilizing rod 22 and the rear stabilizing rod 23 are used to ensure that the unfolding angles between the front support arm 5 and the rear support arm 6 are the same, effectively enhancing the practicability of the support arm of the lifting machine.

[0032] A front sliding rod 29 and a rear sliding rod 30 are fixedly installed on the connecting frame 26. A front sliding groove 31 is provided on the front support arm 5, and a rear sliding groove 32 is provided on the rear support arm 6. One end of the front sliding rod 29 away from the connecting frame 26 extends into the interior of the front sliding groove 31, and the two are slidably connected. One end of the rear sliding rod 30 away from the connecting frame 26 extends into the interior of the rear sliding groove 32, and the two are slidably connected.

[0033] In this embodiment, when the connecting frame 26 moves horizontally, it will synchronously drive the front sliding rod 29 and the rear sliding rod 30 to move synchronously. By using the limit sliding of the front sliding rod 29 and the front sliding groove 31 on the front support arm 5, and the limit sliding of the rear sliding rod 30 and the rear sliding groove 32 on the rear support arm 6, the stability of the front support arm 5 and the rear support arm 6 during unfolding is effectively enhanced, ensuring that the front support arm 5 and the rear support arm 6 are always in a controlled state, avoiding irregular movements or distortions, and further enhancing the stability of the front support arm 5 and the rear support arm 6 during unfolding.

[0034] Working principle:

[0035] During use, drive the vehicle to be lifted to a designated position;

[0036] When it is necessary to expand the front support arm 5 and the rear support arm 6 on the lifting arm 4, the hydraulic cylinder 14 drives the adjusting block 15 to slide in the installation groove 13. Limited by the limiting block 19 and the limiting groove 18, the adjusting block 15 will synchronously drive the U-shaped cross bar 16 to move horizontally. The two groups of tooth block groups 17 on the U-shaped cross bar 16 are respectively engaged with the front gear 11 and the rear gear 12. The front positioning shaft 9 and the rear positioning shaft 10 on the front gear 11 and the rear gear 12 synchronously drive the front support arm 5 and the rear support arm 6 to expand outwards. Through the synchronous expansion of the front support arm 5 and the rear support arm 6, the error caused by unilateral expansion is avoided;

[0037] When the U-shaped cross bar 16 moves horizontally, it will synchronously drive the connecting rod 24 to move synchronously. The L-shaped fixed rod 25 on the connecting rod 24 will drive the connecting frame 26 to move horizontally. The front stabilizing rod 22 and the rear stabilizing rod 23 on the connecting frame 26 will cooperate with the front U-shaped frame 20 and the rear U-shaped frame 21, and will expand synchronously with the front support arm 5 and the rear support arm 6. Using the principle of triangular stability, the stability of the front support arm 5 and the rear support arm 6 after expansion is ensured. At the same time, the front stabilizing rod 22 and the rear stabilizing rod 23 are used to ensure that the expansion angles between the front support arm 5 and the rear support arm 6 are the same;

[0038] When the connecting frame 26 moves horizontally, it will synchronously drive the front sliding rod 29 and the rear sliding rod 30 to move synchronously. The front sliding rod 29 slides in a limited manner through the front sliding groove 31 on the front support arm 5, and the rear sliding rod 30 slides in a limited manner through the rear sliding groove 32 on the rear support arm 6, effectively enhancing the stability of the front support arm 5 and the rear support arm 6 during expansion, ensuring that the front support arm 5 and the rear support arm 6 are always under control, and avoiding irregular movement or distortion.

[0039] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A lifting arm device, comprising a base (1), characterized in that: The base (1) is fixedly provided with symmetrically arranged lifting columns (2), two of the lifting columns (2) are provided with lifting slots (3), lifting arms (4) are slidably installed inside the lifting slots (3), the lifting arms (4) are provided with a driving assembly, and the driving assembly is provided with a front supporting arm (5) and a rear supporting arm (6); An auxiliary component is provided between the lifting arm (4) and the front supporting arm (5) and the rear supporting arm (6), and the stability between the front supporting arm (5) and the rear supporting arm (6) is ensured by the auxiliary component.

2. The lifting arm device according to claim 1, characterized in that: The driving assembly comprises a front auxiliary frame (7) and a rear auxiliary frame (8) fixedly mounted on a front supporting arm (5); a front positioning shaft (9) and a rear positioning shaft (10) are fixedly mounted on the front supporting arm (5) and the rear supporting arm (6), respectively; a front gear (11) is fixedly mounted on the front positioning shaft (9), and a rear gear (12) is fixedly mounted on the rear positioning shaft (10).

3. The lifting arm device according to claim 2, characterized in that: The lifting arm (4) is provided with a mounting groove (13), a hydraulic cylinder (14) is fixedly mounted inside the mounting groove (13), an adjusting block (15) is fixedly mounted on the output end of the hydraulic cylinder (14), a U-shaped cross bar (16) is fixedly mounted on the adjusting block (15), a symmetrically arranged tooth block group (17) is fixedly mounted on the inner side surface of the U-shaped cross bar (16), a limiting groove (18) is provided on the inner side surface of the mounting groove (13), and a limiting block (19) is fixedly mounted on the adjusting block (15).

4. The lifting arm device according to claim 3, characterized in that: The front support arm (5) is rotatably mounted on the front auxiliary frame (7) via a front positioning shaft (9), and the rear support arm (6) is rotatably mounted on the rear auxiliary frame (8) via a rear positioning shaft (10). The U-shaped cross bar (16) is located outside the front gear (11) and the rear gear (12). The front gear (11) and the rear gear (12) are respectively meshed with two groups of tooth blocks (17) on the U-shaped cross bar (16), and the limit block (19) is slidably mounted on the limit groove (18).

5. The lifting arm device according to claim 3, characterized in that: The auxiliary comprises a front U-shaped frame (20) fixedly mounted on the front supporting arm (5) and a rear U-shaped frame (21) on the rear supporting arm (6); a front stabilizing rod (22) and a rear stabilizing rod (23) are rotatably mounted on the front U-shaped frame (20) and the rear U-shaped frame (21), respectively; a connecting rod (24) is fixedly mounted on the U-shaped cross bar (16), and an L-shaped fixed rod (25) is fixedly mounted on the connecting rod (24).

6. The lifting arm device according to claim 5, characterized in that: A connecting frame (26) is fixedly mounted on the L-shaped fixed rod (25), connecting grooves (27) are provided at both ends of the connecting frame (26), and symmetrically arranged auxiliary rods (28) are fixedly mounted on the side end surface of the connecting frame (26).

7. The lifting arm device according to claim 6, characterized in that: One end of the front stabilizing rod (22) away from the front U-shaped frame (20) is rotatably connected to one of the connecting grooves (27) on the connecting frame (26), and one end of the rear stabilizing rod (23) away from the rear U-shaped frame (21) is rotatably connected to another connecting groove (27) on the connecting frame (26). The front stabilizing rod (22) and the rear stabilizing rod (23) are arranged obliquely, and one end of the auxiliary rod (28) away from the connecting frame (26) extends to the interior of the front supporting arm (5).

8. The lifting arm device according to claim 6, characterized in that: A front slide bar (29) and a rear slide bar (30) are fixedly mounted on the connecting frame (26); a front slide groove (31) is formed on the front supporting arm (5); a rear slide groove (32) is formed on the rear supporting arm (6); an end of the front slide bar (29) away from the connecting frame (26) extends to the inside of the front slide groove (31), and the two are slidably connected; an end of the rear slide bar (30) away from the connecting frame (26) extends to the inside of the rear slide groove (32), and the two are slidably connected.

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