Novel column type lifting machine support arm structure

Abstract

The invention discloses a novel column type lifting machine supporting arm structure, and relates to the technical field of lifting machine supporting arms. Comprising a machine base, a lifting column is fixedly installed on the machine base, a lifting groove is formed in the inner side face of the lifting column, a lifting piece is arranged in the lifting groove, and a lifting arm is fixedly installed at the output end of the lifting piece; an adjusting assembly is arranged on the lifting arm, and a front supporting arm and a rear supporting arm are arranged on the adjusting assembly; a stabilizing assembly is arranged among the front supporting arm, the rear supporting arm and the lifting arm. A jacking and fixing assembly is arranged between the lifting arm and the lifting column, the adjusting assembly comprises a sliding groove formed in the lifting arm, and a hydraulic cylinder is fixedly installed in the sliding groove. Through cooperation of the adjusting assembly, the stabilizing assembly and the jacking and fixing assembly, the stability and supporting force of an object in the lifting process are effectively enhanced, so that uniform distribution of loads is ensured, and inclination or deviation in the lifting process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of lift arms, and particularly to a novel column lift arm structure. Background Art

[0002] Column lifts mainly use an AC motor as a power source to drive a hydraulic pump to output hydraulic oil at a certain pressure, and drive a hydraulic cylinder to lift a vehicle for maintenance, which is a single-column lifting device.

[0003] In the prior art, a Chinese patent with the publication number "CN206288905U" discloses a portable double-column lift. When the vehicle is relatively wide, a second drive motor drives a transverse hydraulic cylinder, and the transverse hydraulic cylinder performs telescopic movement to drive the movable column to move on the bottom plate seat, thereby increasing the distance between the fixed column and the movable column. Then the car can be driven in and lifted for maintenance, solving the problem that the existing double-column lift cannot be applied to the maintenance of all vehicles due to its fixed width.

[0004] In the above-described solution, the two support arms on one column cannot rotate in angle. When encountering a relatively large object, the bottom of the object cannot be effectively supported. Moreover, in some existing lifts, since most of the support arms are suspended in the air, one end of the support arm is only installed with a driving member on the column. When the weight of the object is large, it is easy to cause great pressure on the support arm, and in severe cases, it is very easy to damage the support arm. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a novel column lift arm structure, 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 novel column lift arm structure includes a machine base, on which a lifting column is fixedly installed. An inner side surface of the lifting column is provided with a lifting groove, and a lifting member is arranged inside the lifting groove. An output end of the lifting member is fixedly installed with a lifting arm;

[0008] An adjusting assembly is arranged on the lifting arm, and a front support arm and a rear support arm are arranged on the adjusting assembly;

[0009] A stabilizing assembly is arranged between the front support arm, the rear support arm and the lifting arm;

[0010] A top-fixing assembly is arranged between the lifting arm and the lifting column.

[0011] Preferably, the adjusting assembly includes a sliding groove provided in the lifting arm. A hydraulic cylinder is fixedly installed inside the sliding groove. The output end of the hydraulic cylinder is fixedly connected to an output rod. One end of the output rod away from the hydraulic cylinder is fixedly connected to a double-sided toothed plate. A front support plate is fixedly installed at the end of the double-sided toothed plate.

[0012] Preferably, double convex plates are fixedly installed at the ends of the lifting arms. A rotating groove is provided inside the double convex plates. A symmetrically arranged front rotating shaft and a rear rotating shaft are rotatably installed inside the rotating groove. A front auxiliary gear and a rear auxiliary gear are respectively fixedly installed on the front rotating shaft and the rear rotating shaft.

[0013] Preferably, the sliding groove communicates with the rotating groove. The double-sided toothed plate meshes with the front auxiliary gear and the rear auxiliary gear respectively. Connecting grooves are provided on both the front support arm and the rear support arm. The front support arm is fixedly connected to the front rotating shaft through the connecting groove. The rear support arm is fixedly connected to the rear rotating shaft through the connecting groove. The front support arm and the rear support arm are arranged in a V shape.

[0014] Preferably, the stabilizing assembly includes a first stabilizing frame fixed on the front support arm and the rear support arm. A first stabilizing shaft is rotatably installed inside the first stabilizing frame. A stabilizing rod is rotatably installed on the first stabilizing shaft. A reset groove is provided on the side end face of the lifting arm. A sliding rod is fixedly connected inside the reset groove. A stabilizing block is slidably installed on the sliding rod. A second stabilizing frame is fixedly installed on the stabilizing block. A second stabilizing shaft is rotatably installed inside the second stabilizing frame. A spring is fixedly connected to the stabilizing block.

[0015] Preferably, one end of the stabilizing rod away from the first stabilizing shaft is rotatably connected to the second stabilizing shaft. The stabilizing rod is arranged obliquely. One end of the spring away from the stabilizing block is fixedly connected inside the reset groove. The spring is located outside the sliding rod.

[0016] Preferably, the top fixing assembly includes a first top fixing frame slidably installed at the bottom of the lifting arm. A first top fixing shaft is rotatably installed on the first top fixing frame. A top fixing rod is rotatably installed on the first top fixing shaft. A second top fixing frame is fixedly installed on the inner side face of the lifting column. A second top fixing shaft is fixedly installed inside the second top fixing frame.

[0017] Preferably, one end of the top fixing rod away from the first top fixing frame is fixedly connected to the second top fixing shaft. The top fixing rod is arranged obliquely.

[0018] The present invention provides a novel column type lift arm structure. Compared with the prior art, it has the following

[0019] Beneficial effects:

[0020] 1. In the present invention, a double-sided toothed plate on an output rod is driven by a hydraulic cylinder to slide in a sliding groove. By the cooperation of the double-sided toothed plate with a front auxiliary gear and a rear auxiliary gear, the front auxiliary gear and the rear auxiliary gear respectively drive a front support arm and a rear support arm to expand outward through a front rotating shaft and a rear rotating shaft. The front support arm and the rear support arm in the expanded state can better disperse the load, improve the uniformity of the supporting force, and help ensure that the object will not tilt or shift when lifted.

[0021] 2. In the present invention, when the front support arm and the rear support arm expand outward, one end of a stabilizing rod on a first stabilizing frame will move with the front support arm and the rear support arm. Then, by the rotation between the stabilizing rod and a first stabilizing shaft, the other end of the stabilizing rod is limited on a sliding rod through a second stabilizing shaft and a stabilizing block, thereby causing a position movement. Then, by the reaction force of a spring, the stabilizing rod is ensured to be in a stable state, effectively enhancing the stability after the front support arm and the rear support arm are expanded.

[0022] 3. In the present invention, when a lifting arm moves upward through a driving member, one end of a top fixing rod will slide in a limited manner on the lifting arm through a first top fixing frame and cooperate with a first top fixing shaft, and the other end of the top fixing rod will cooperate with a second top fixing shaft and a second top fixing frame, so that the top fixing rod rotates at an angle. By using the principle of triangular support, the lifting arm after being lifted is ensured to be in a stable state, effectively enhancing the safety of the support arm structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 is a schematic diagram of the structure of the lifting arm in the present invention;

[0025] Figure 3 is a cross-sectional view of the lifting arm in the present invention;

[0026] Figure 4 is a schematic diagram of the structure of the adjusting assembly in the present invention;

[0027] Figure 5 is a schematic diagram of the internal structure of the lifting arm in the present invention;

[0028] Figure 6 is a schematic diagram of the structure of the stabilizing rod in the present invention.

[0029] In the figure: 1, machine base; 2, lifting column; 3, lifting groove; 4, lifting member; 5, lifting arm; 6, front support arm; 7, rear support arm; 8, sliding groove; 9, hydraulic cylinder; 10, output rod; 11, double-sided toothed plate; 12, front support plate; 13, double convex plate; 14, rotating groove; 15, front rotating shaft; 16, rear rotating shaft; 17, front auxiliary gear; 18, rear auxiliary gear; 19, connecting groove; 20, first stabilizing frame; 21, first stabilizing shaft; 22, stabilizing rod; 23, reset groove; 24, sliding rod; 25, stabilizing block; 26, second stabilizing frame; 27, second stabilizing shaft; 28, spring; 29, first fixing frame; 30, first fixing shaft; 31, fixing rod; 32, second fixing frame; 33, second fixing shaft. Detailed implementation manner

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1-6 , the present invention is a novel column-type lift arm structure, including a machine base 1, a lifting column 2 is fixedly installed on the machine base 1, a lifting groove 3 is opened on the inner side surface of the lifting column 2, a lifting member 4 is arranged inside the lifting groove 3, and the output end of the lifting member 4 is fixedly installed with a lifting arm 5. Among them, the lifting member 4 can be a hydraulic device, and the hydraulic device is used to drive the lifting arm 5 to adjust the height. Since the hydraulic device is a well-known technology in the art, no specific description will be made here;

[0032] An adjusting component is arranged on the lifting arm 5, a front support arm 6 and a rear support arm 7 are arranged on the adjusting component. The adjusting component includes a sliding groove 8 arranged inside the lifting arm 5, a hydraulic cylinder 9 is fixedly installed inside the sliding groove 8, the output end of the hydraulic cylinder 9 is fixedly connected with an output rod 10, the end of the output rod 10 far away from the hydraulic cylinder 9 is fixedly connected with a double-sided toothed plate 11, and a front support plate 12 is fixedly installed at the end of the double-sided toothed plate 11;

[0033] The end of the lifting arm 5 is fixedly installed with a double convex plate 13. A rotating groove 14 is formed inside the double convex plate 13. A symmetrically arranged front rotating shaft 15 and a rear rotating shaft 16 are rotatably installed inside the rotating groove 14. A front auxiliary gear 17 and a rear auxiliary gear 18 are respectively fixedly installed on the front rotating shaft 15 and the rear rotating shaft 16. The sliding groove 8 communicates with the rotating groove 14. The double-sided tooth plate 11 meshes with the front auxiliary gear 17 and the rear auxiliary gear 18 respectively. Connecting grooves 19 are formed on both the front support arm 6 and the rear support arm 7. The front support arm 6 is fixedly connected to the front rotating shaft 15 through the connecting groove 19, and the rear support arm 7 is fixedly connected to the rear rotating shaft 16 through the connecting groove 19. The front support arm 6 and the rear support arm 7 are arranged in a V shape. Among them, the position of the front support plate 12 is on the front side of the double convex plate 13 and is attached to the front end face of the double convex plate 13.

[0034] In this embodiment, the double-sided tooth plate 11 on the output rod 10 is driven by the hydraulic cylinder 9 to slide in a limited manner in the sliding groove 8. By using the cooperation between the double-sided tooth plate 11 and the front auxiliary gear 17 and the rear auxiliary gear 18, the front auxiliary gear 17 and the rear auxiliary gear 18 respectively drive the front support arm 6 and the rear support arm 7 to expand outward through the front rotating shaft 15 and the rear rotating shaft 16. The front support arm 6 and the rear support arm 7 in the expanded state can better disperse the load and improve the uniformity of the supporting force, which helps to ensure that the object will not tilt or shift when lifted.

[0035] A stabilizing assembly is provided between the front support arm 6, the rear support arm 7 and the lifting arm 5. The stabilizing assembly includes a first stabilizing frame 20 fixed on the front support arm 6 and the rear support arm 7. A first stabilizing shaft 21 is rotatably installed inside the first stabilizing frame 20. A stabilizing rod 22 is rotatably installed on the first stabilizing shaft 21. A reset groove 23 is formed on the side end face of the lifting arm 5. A sliding rod 24 is fixedly connected inside the reset groove 23. A stabilizing block 25 is slidably installed on the sliding rod 24. A second stabilizing frame 26 is fixedly installed on the stabilizing block 25. A second stabilizing shaft 27 is rotatably installed inside the second stabilizing frame 26. A spring 28 is fixedly connected to the stabilizing block 25. One end of the stabilizing rod 22 away from the first stabilizing shaft 21 is rotatably connected to the second stabilizing shaft 27. The stabilizing rod 22 is arranged obliquely. One end of the spring 28 away from the stabilizing block 25 is fixedly connected inside the reset groove 23. The spring 28 is located outside the sliding rod 24.

[0036] In this embodiment, when the front support arm 6 and the rear support arm 7 expand outward, one end of the stabilizing rod 22 on the first stabilizing frame 20 will move along with the front support arm 6 and the rear support arm 7. Then, by using the rotation between the stabilizing rod 22 and the first stabilizing shaft 21, the other end of the stabilizing rod 22 is limited by the second stabilizing shaft 27 and the stabilizing block 25 on the sliding rod 24, so as to move in position. Then, by using the reaction force of the spring 28, it is ensured that the stabilizing rod 22 is in a stable state, effectively enhancing the stability after the front support arm 6 and the rear support arm 7 are expanded.

[0037] A top fixing assembly is provided between the lifting arm 5 and the lifting column 2. The top fixing assembly includes a first top fixing frame 29 slidably mounted at the bottom of the lifting arm 5. A first top fixing shaft 30 is rotatably mounted on the first top fixing frame 29. A top fixing rod 31 is rotatably mounted on the first top fixing shaft 30. A second top fixing frame 32 is fixedly mounted on the inner side surface of the lifting column 2. A second top fixing shaft 33 is fixedly mounted inside the second top fixing frame 32. One end of the top fixing rod 31 away from the first top fixing frame 29 is fixedly connected to the second top fixing shaft 33, and the top fixing rod 31 is arranged obliquely.

[0038] In this embodiment, when the lifting arm 5 moves upward through the driving member, one end of the top fixing rod 31 will limit the sliding of the first top fixing frame 29 on the lifting arm 5 and cooperate with the first top fixing shaft 30, and the other end of the top fixing rod 31 will cooperate with the second top fixing shaft 33 and the second top fixing frame 32. Thus, the top fixing rod 31 rotates at an angle. Using the triangular support principle, it ensures that the lifting arm 5 after rising is in a stable state, effectively enhancing the safety of the arm structure.

[0039] Working principle:

[0040] During use, the double-sided toothed plate 11 on the output rod 10 is driven by the hydraulic cylinder 9 to limit the sliding in the sliding groove 8. By using the cooperation of the double-sided toothed plate 11 with the front auxiliary gear 17 and the rear auxiliary gear 18, the front auxiliary gear 17 and the rear auxiliary gear 18 respectively drive the front support arm 6 and the rear support arm 7 to expand outward through the front rotating shaft 15 and the rear rotating shaft 16. The expanded front support arm 6 and rear support arm 7 can better disperse the load, improve the uniformity of the supporting force, and help ensure that the object does not tilt or shift when lifted;

[0041] When the front support arm 6 and the rear support arm 7 expand outward, one end of the stabilizing rod 22 on the first stabilizing frame 20 will move with the front support arm 6 and the rear support arm 7. Then, by using the rotation between the stabilizing rod 22 and the first stabilizing shaft 21, the other end of the stabilizing rod 22 is limited by the second stabilizing shaft 27 and the stabilizing block 25 on the sliding rod 24, thereby causing a position movement. Then, by using the reaction force of the spring 28, it ensures that the stabilizing rod 22 is in a stable state, effectively enhancing the stability of the front support arm 6 and the rear support arm 7 after expansion;

[0042] When the lifting arm 5 moves upward through the driving member, one end of the top fixing rod 31 will limit the sliding of the first top fixing frame 29 on the lifting arm 5 and cooperate with the first top fixing shaft 30, and the other end of the top fixing rod 31 will cooperate with the second top fixing shaft 33 and the second top fixing frame 32. Thus, the top fixing rod 31 rotates at an angle. Using the triangular support principle, it ensures that the lifting arm 5 after rising is in a stable state, effectively enhancing the safety of the arm structure.

[0043] It should be noted that in this text, 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 "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0044] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand 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 novel column lift arm structure, comprising a base (1), characterized in that: A lifting column (2) is fixedly mounted on the machine base (1); a lifting slot (3) is provided on the inner side of the lifting column (2); a lifting member (4) is provided inside the lifting slot (3); and a lifting arm (5) is fixedly mounted on the output end of the lifting member (4); The lifting arm (5) is provided with an adjustment component, and the adjustment component is provided with a front supporting arm (6) and a rear supporting arm (7); A stabilizing component is provided between the front supporting arm (6), the rear supporting arm (7) and the lifting arm (5); A top fixing component is arranged between the lifting arm (5) and the lifting column (2).

2. A novel column lift arm structure according to claim 1, characterized in that: The adjustment assembly comprises a sliding groove (8) arranged in the lifting arm (5), a hydraulic cylinder (9) is fixedly installed inside the sliding groove (8), an output end of the hydraulic cylinder (9) is fixedly connected to an output rod (10), an end of the output rod (10) away from the hydraulic cylinder (9) is fixedly connected to a double-sided toothed plate (11), and a front support plate (12) is fixedly installed at the end of the double-sided toothed plate (11).

3. The novel column lift arm structure according to claim 2 is characterized in that: A double convex plate (13) is fixedly mounted on the end of the lifting arm (5), a rotating groove (14) is provided inside the double convex plate (13), a front rotating shaft (15) and a rear rotating shaft (16) which are symmetrically arranged are rotatably mounted inside the rotating groove (14), and a front auxiliary gear (17) and a rear auxiliary gear (18) are fixedly mounted on the front rotating shaft (15) and the rear rotating shaft (16), respectively.

4. The novel column lift arm structure according to claim 3 is characterized in that: The sliding groove (8) is communicated with the rotating groove (14); the double-sided toothed plate (11) is respectively meshed with the front auxiliary gear (17) and the rear auxiliary gear (18); the front supporting arm (6) and the rear supporting arm (7) are both provided with a connecting groove (19); the front supporting arm (6) is fixedly connected to the front rotating shaft (15) through the connecting groove (19); the rear supporting arm (7) is fixedly connected to the rear rotating shaft (16) through the connecting groove (19); and the front supporting arm (6) and the rear supporting arm (7) are arranged in a V shape.

5. The novel column lift arm structure according to claim 3 is characterized in that: The stabilizing component comprises a first stabilizing frame (20) fixed on the front supporting arm (6) and the rear supporting arm (7); a first stabilizing shaft (21) is rotatably mounted inside the first stabilizing frame (20); a stabilizing rod (22) is rotatably mounted on the first stabilizing shaft (21); a reset groove (23) is provided on the side end surface of the lifting arm (5); a sliding rod (24) is fixedly connected inside the reset groove (23); a stabilizing block (25) is slidably mounted on the sliding rod (24); a second stabilizing frame (26) is fixedly mounted on the stabilizing block (25); a second stabilizing shaft (27) is rotatably mounted inside the second stabilizing frame (26); and a spring (28) is fixedly connected to the stabilizing block (25).

6. The novel column lift arm structure according to claim 5 is characterized in that: One end of the stabilizing rod (22) away from the first stabilizing shaft (21) is rotatably connected to the second stabilizing shaft (27), and the stabilizing rod (22) is arranged obliquely. One end of the spring (28) away from the stabilizing block (25) is fixedly connected to the inside of the reset groove (23), and the position of the spring (28) is located outside the sliding rod (24).

7. The novel column lift arm structure according to claim 1 is characterized in that: The top fixing assembly comprises a first top fixing frame (29) slidably mounted at the bottom of the lifting arm (5); a first top fixing shaft (30) is rotatably mounted on the first top fixing frame (29); a top fixing rod (31) is rotatably mounted on the first top fixing shaft (30); a second top fixing frame (32) is fixedly mounted on the inner side surface of the lifting column (2); and a second top fixing shaft (33) is fixedly mounted inside the second top fixing frame (32).

8. The novel support arm structure of a column lift according to claim 7 is characterized in that: One end of the top fixing rod (31) away from the first top fixing frame (29) is fixedly connected to the second top fixing shaft (33), and the top fixing rod (31) is arranged obliquely.

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