Rotary support arm for lifting end of automobile production line

Abstract

The utility model relates to a kind of rotating support arm for lifting end of automobile production line, including frame, L type support arm, connecting rod, double crank and driving motor;L type support arm is rotationally arranged on frame, double crank one end is connected with driving motor, double crank other end is connected with connecting rod, and several L type support arms are connected by connecting rod;The utility model is when high-level handover, support arm rotates and extends, supports lift end, lift end sag ≤1mm, lift positioning accuracy ±1mm, workpiece can run smoothly, realize handover, while ensuring the position accuracy of lift, solve the stop line failure caused by excessive sag when lift high-level handover.

Description

Technical Field

[0001] This utility model relates to the field of automobile production line technology, and in particular to a rotating support arm for lifting end of an automobile production line. Background Technology

[0002] Existing automotive production line lifts have the following technical defects when conveying workpieces with significant weight differences (such as engine assemblies, body frames, and chassis assemblies): 1. Eccentric loads on the workpieces cause sagging deformation at the cantilever end of the lift (measured data reaches 10-15mm), leading to misalignment during conveying. 2. Vibration caused by the sagging of the cantilever end is transmitted to the lift sensor detection components, affecting positioning accuracy (±5mm lift sensor positioning accuracy). 3. Existing rigid support mechanisms pose an interference risk, requiring frequent shutdowns for adjustment.

[0003] To address the aforementioned issues, mechanical support rollers are currently used to eliminate potential hazards. However, the following problems still exist: Because the elevator carries the workpiece in a lifting motion, the mechanical support rollers can only be fixedly installed behind the end of the elevator, and a safe distance of 20mm must be maintained. The workpieces are diverse in type, shape, and length, and especially when the workpiece is severely unbalanced, it will detach from the elevator, causing the end of the elevator to sag, leading to major malfunctions such as workpiece jamming. Furthermore, the elevator operates at height, making it extremely difficult for personnel to handle. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a rotating support arm for lifting ends in automobile production lines.

[0005] This utility model is achieved using the following technical solution:

[0006] A rotating support arm for lifting end of an automobile production line includes a frame, an L-shaped support arm, a connecting rod, a double crank, and a drive motor; the L-shaped support arm is rotatably mounted on the frame, one end of the double crank is connected to the drive motor, and the other end of the double crank is connected to the connecting rod, and a plurality of L-shaped support arms are connected by the connecting rod.

[0007] Preferably, the double crank includes a first crank, a second crank, and a drive shaft; the drive shaft is provided at the output end of the drive motor, the first end of the second crank is connected to the drive shaft, the second end of the second crank and the first end of the first crank are rotatably connected, and the second end of the first crank is rotatably connected to the connecting rod.

[0008] Preferably, the L-shaped support arm has a 90° L-shaped structure.

[0009] Preferably, the L-shaped support arm has a multi-layer structure.

[0010] Preferably, the L-shaped support arm is provided with reinforcing ribs.

[0011] Preferably, the drive motor is controlled by the elevator PLC controller.

[0012] Preferably, the frame has an inverted U-shaped structure.

[0013] Preferably, it also includes bracket one and bracket two; the drive shaft is disposed on bracket one and the drive motor is disposed on bracket two.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects:

[0015] During high-level handover, the support arm rotates and extends to support the end of the elevator. The sag of the elevator end is ≤1mm, and the positioning accuracy of the elevator is ±1mm. The workpiece can run smoothly and the handover can be achieved. At the same time, the positional accuracy of the elevator is guaranteed, and the line stop failure caused by excessive sag during high-level handover is solved. Attached Figure Description

[0016] The utility model will be further described below with reference to the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the L-shaped support arm retracted when the elevator is in a low position according to this utility model;

[0019] Figure 3 This is a schematic diagram of the L-shaped support arm extending during the high-level handover of the elevator according to this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Frame; 2. L-shaped support arm; 3. Connecting rod; 4. Double crank; 5. Drive motor; 41. Crank one; 42. Crank two; 43. Drive shaft; 44. Bracket one; 51. Bracket two. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise explicitly specified and limited, the embodiments and features described in the embodiments of this application can be combined with each other. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figure 1-3 As shown: A rotating support arm for lifting end of an automobile production line includes a frame 1, an L-shaped support arm 2, a connecting rod 3, a double crank 4, and a drive motor 5; the L-shaped support arm 2 is rotatably mounted on the frame 1, one end of the double crank 4 is connected to the drive motor 5, and the other end of the double crank 4 is connected to the connecting rod 3, and several L-shaped support arms 2 are connected by the connecting rod 3.

[0024] The double crank 4 includes a first crank 41, a second crank 42, and a drive shaft 43; the output end of the drive motor 5 is provided with the drive shaft 43, the first end of the second crank 42 is connected to the drive shaft 43, the second end of the second crank 42 is rotatably connected to the first end of the first crank 41, and the second end of the first crank 41 is rotatably connected to the connecting rod 3. Preferably, the two L-shaped support arms 2 are connected at their intersection points by the connecting rod 3, and the second end of the first crank 41 is fitted and rotated around the middle of the connecting rod 3.

[0025] L-shaped support arm 2 has a 90° L-shaped structure.

[0026] Furthermore, the L-shaped support arm 2 has a multi-layer structure. Preferably, each L-shaped support arm 2 consists of two 90° L-shaped structures, the top of which is connected to the frame 1 via a pivot, allowing the L-shaped support arm 2 to rotate.

[0027] The L-shaped support arm 2 is provided with reinforcing ribs. Preferably, the L-shaped support arm 2 is provided with reinforcing ribs diagonally between the two arms.

[0028] The drive motor 5 is controlled by the elevator's PLC controller. The elevator's PLC controller controls the operation of the drive motor 5 according to the set program.

[0029] Frame 1 is an inverted U-shaped frame.

[0030] It also includes bracket 44 and bracket 51; the drive shaft 43 is mounted on bracket 44, and the drive motor 5 is mounted on bracket 51. Bracket 44 is used to support the drive shaft 43, and bracket 51 is used to support the drive motor 5.

[0031] Working Principle: This device is suitable for supporting the lifting end, especially for supporting the lifting end of lifting machines under eccentric load conditions. When the lifting machine on the automotive production line carries the workpiece to the high-position handover position, the lifting machine's PLC controller sends a positioning signal to the drive motor 5. The drive motor 5 operates, causing crank 2 42 to rotate downwards, which in turn causes crank 1 41 to move downwards. Crank 1 41 drives the L-shaped support arm 2 to rotate outwards and extend through the connecting rod 3. At this time, the angle between crank 1 41 and crank 2 42 is 90° (angle is not limited), providing support for the lower part of the lifting end. The sag of the lifting end is ≤1mm, the positioning accuracy of the lifting machine is ±1mm, and the workpiece can run smoothly, achieving handover. When the lifting machine is in the low position, the L-shaped support arm 2 retracts. At this time, the angle between crank 1 41 and crank 2 42 is 30° (angle is not limited).

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rotating support arm for a lifting end of an automobile production line, characterized in that, It includes a frame (1), an L-shaped support arm (2), a connecting rod (3), a double crank (4), and a drive motor (5); the L-shaped support arm (2) is rotatably mounted on the frame (1), one end of the double crank (4) is connected to the drive motor (5), and the other end of the double crank (4) is connected to the connecting rod (3), and several L-shaped support arms (2) are connected by the connecting rod (3).

2. The rotary support arm for the lifting end of an automobile production line as described in claim 1, characterized in that, The double crank (4) includes crank one (41), crank two (42) and drive shaft (43); the output end of the drive motor (5) is provided with the drive shaft (43), the first end of crank two (42) is connected to the drive shaft (43), the second end of crank two (42) and the first end of crank one (41) are rotatably connected, and the second end of crank one (41) is rotatably connected to the connecting rod (3).

3. The rotary support arm for the lifting end of an automobile production line as described in claim 1, characterized in that, The L-shaped support arm (2) has a 90° L-shaped structure.

4. The rotating support arm for the lifting end of an automobile production line as described in claim 3, characterized in that, The L-shaped support arm (2) has a multi-layer structure.

5. The rotary support arm for the lifting end of an automobile production line as described in claim 4, characterized in that, The L-shaped support arm (2) is provided with reinforcing ribs.

6. The rotary support arm for the lifting end of an automobile production line as described in claim 1, characterized in that, The drive motor (5) is controlled by the elevator PLC controller.

7. The rotating support arm for the lifting end of an automobile production line as described in claim 1, characterized in that, The frame (1) is an inverted U-shaped structure.

8. The rotating support arm for the lifting end of an automobile production line as described in claim 2, characterized in that, It also includes bracket one (44) and bracket two (51); the drive shaft (43) is disposed on bracket one (44) and the drive motor (5) is disposed on bracket two (51).

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