A scissor lift detection component and aerial work platform

Abstract

This utility model relates to the field of aerial work platform technology, and discloses a scissor lift detection component and an aerial work platform, including a first mounting plate, a scissor shaft, and a U-shaped plate. The scissor shaft is rotatably mounted on the first mounting plate, and the U-shaped plate is sleeved on the scissor shaft. The U-shaped plate and the scissor shaft are connected by a pin, and the U-shaped plate and / or the scissor shaft and the pin are in clearance fit. The detection component also includes an angle sensor, which is mounted on the U-shaped plate. By connecting the U-shaped plate and the scissor shaft through the pin, the U-shaped plate and the scissor shaft are in a floating connection. When there are dimensional errors in the parts manufacturing process or assembly errors in the installation process, the U-shaped plate can float relative to the scissor shaft. This can filter out motion other than axial rotation, avoiding the situation in the prior art where the angle sensor's detection accuracy decreases or even becomes damaged after long-term reciprocating rotation during operation.

Description

Technical Field

[0001] This utility model relates to the field of aerial work platform technology, and in particular to a scissor lift detection component and an aerial work platform. Background Technology

[0002] Currently, aerial work platforms are used for high-altitude operations in various industries. There are two main methods for implementing real-time monitoring and limiting of the lifting height of existing aerial work platforms during operation: one is using upper and lower limit switches, and the other is the widespread use of angle sensors. During operation, the rotation angle of the scissor lift needs to be measured in real time to monitor and control the lifting height, thus achieving the upper and lower limit functions of the aerial work platform.

[0003] Angle sensors must be mounted and fixed on the scissor lift shaft and require angular changes to function. During long-term lifting and lowering operations, the scissor lift shaft of an aerial work platform rotates continuously. Due to the limited space between the small aerial work platform chassis and the scissor lift base, a compact mounting structure is needed to install the angle sensor. For example, the angle sensing device for aerial work platforms mentioned in patent application No. 202120005621.4 uses a fixing plate to fix the angle sensor on the base to detect the angle of the scissor lift shaft.

[0004] However, the aforementioned angle sensor mounting structure still has certain problems: the mounting plate is designed to ensure that the position of the angle sensor does not change during operation so as to coincide with the axis of the scissor shaft, thereby ensuring that the rotation angle of the angle sensor is consistent with the rotation angle of the scissor shaft. However, in actual use, it has been found that there are dimensional errors in the structure of the equipment itself and assembly errors during the installation process, which often lead to the misalignment of the axis of the scissor shaft and the rotation axis of the angle sensor. In this case, after long-term reciprocating rotation during operation, the detection accuracy of the angle sensor will decrease or even be damaged. Utility Model Content

[0005] This invention addresses the problems in the prior art by providing a floating and adjustable scissor lift detection component and an aerial work platform, thus solving the problem that the angle sensor is easily misaligned with the scissor lift shaft after installation.

[0006] The technical solution adopted in this utility model is as follows: Firstly, a scissor lift detection assembly is provided, including a first mounting plate, a scissor shaft, and a U-shaped plate. The scissor shaft is rotatably mounted on the first mounting plate, and the U-shaped plate is sleeved on the scissor shaft. The detection assembly also includes a pin, and the U-shaped plate is connected to the scissor shaft via the pin. The U-shaped plate and / or the scissor shaft and the pin are in clearance fit. The detection assembly also includes an angle sensor, which is mounted on the U-shaped plate. By connecting the U-shaped plate and the scissor shaft via the pin, a floating connection is established between the U-shaped plate and the scissor shaft. When there are dimensional errors during the manufacturing process of the parts or assembly errors during the installation process, the U-shaped plate can float relative to the scissor shaft. This can filter out motion other than axial rotation, transmitting only the axial rotation of the scissor shaft to the angle sensor, avoiding the situation in the prior art where the angle sensor's detection accuracy decreases or even becomes damaged after prolonged reciprocating rotation during operation.

[0007] Preferably, a first through hole is provided on the scissor lift shaft, and a second through hole is provided on each of the opposite end faces of the U-shaped plate. The first and second through holes facilitate the installation of the testing components.

[0008] Preferably, the pin and the first through hole are in clearance fit or interference fit, and the pin and the two second through holes are in clearance fit.

[0009] Preferably, the distance between the inner end faces of the two sides of the U-shaped plate is greater than the diameter of the scissor shaft. By setting the distance between the inner end faces of the two sides of the U-shaped plate to be greater than the diameter of the scissor shaft, the pin can float in the axial direction.

[0010] Preferably, the detection assembly further includes a second mounting plate, which is fixedly disposed relative to the first mounting plate. The second mounting plate is positioned between the U-shaped plate and the angle sensor. The second mounting plate has a third through hole, and the angle sensor is fixedly mounted on the second mounting plate. The measuring shaft of the angle sensor passes through the third through hole and is fixedly connected to the U-shaped plate. By using the second mounting plate, the angle sensor will not float synchronously with the floating of the U-shaped plate during movement, increasing the accuracy of the angle sensor's measurement results.

[0011] Secondly, an aerial work platform is provided, including a base, a scissor lift mechanism is provided on the base, and the scissor lift mechanism is provided with the scissor lift detection component described in the first aspect.

[0012] As can be seen from the above technical solutions, the advantages of this utility model are as follows: By connecting the U-shaped plate and the scissor shaft through a pin, the U-shaped plate and the scissor shaft are connected in a floating manner. When there are dimensional errors in the parts manufacturing process or assembly errors in the installation process, the U-shaped plate can float relative to the scissor shaft. This can filter out motion other than axial rotation, transmitting only the axial rotation of the scissor shaft to the angle sensor, avoiding the situation in the prior art where the angle sensor's detection accuracy decreases or even gets damaged after long-term reciprocating rotation during operation. The first and second through holes facilitate the installation of the detection component. By setting the distance between the inner end faces of the two sides of the U-shaped plate to be greater than the diameter of the scissor shaft, the pin can float in the axial direction. The second mounting plate ensures that the angle sensor does not float synchronously with the floating U-shaped plate during movement, increasing the accuracy of the angle sensor's measurement results. Attached Figure Description

[0013] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a partial structural schematic diagram of the scissor lift detection component proposed in Embodiment 1 of this utility model.

[0015] Figure 2 This is a partial exploded view of the scissor lift detection component proposed in Embodiment 1 of this utility model.

[0016] In the diagram: 1. Scissor lift shaft; 2. U-shaped plate; 3. Pin shaft; 4. Angle sensor; 5. First through hole; 6. Second through hole; 7. Second mounting plate; 8. Third through hole; 9. Measuring shaft. Detailed Implementation

[0017] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0018] Example 1: like Figure 1 and Figure 2As shown, a scissor lift detection assembly includes a first mounting plate, a scissor shaft 1, and a U-shaped plate 2. The scissor shaft 1 has a first through hole 5, and the U-shaped plate 2 has second through holes 6 on both opposite end faces. The scissor shaft 1 is rotatably mounted on the first mounting plate, and the U-shaped plate 2 is sleeved on the scissor shaft 1. The detection assembly also includes a pin 3, which connects the U-shaped plate 2 and the scissor shaft 1. The U-shaped plate 2 and / or the scissor shaft 1 are clearance-fitted with the pin 3. In this embodiment, the pin 3 is clearance-fitted or interference-fitted with the first through hole 5, and clearance-fitted with the two second through holes 6. The detection assembly also includes an angle sensor 4. The device 4 is mounted on the U-shaped plate 2. With this configuration, the U-shaped plate 2 is connected to the scissor shaft 1 via the pin 3. At this time, the U-shaped plate 2 and the scissor shaft 1 are floating. When there are dimensional errors in the production process of the parts or assembly errors in the installation process, the U-shaped plate 2 can float relative to the scissor shaft 1. This can filter out motion other than axial rotation and only transmit the axial rotation of the scissor shaft 1 to the angle sensor 4. This avoids the situation in the prior art where the detection accuracy of the angle sensor 4 decreases or even gets damaged after long-term reciprocating rotation during operation. The first through hole 5 and the second through hole 6 facilitate the installation of the detection component.

[0019] In this embodiment, the distance between the inner end faces of the two sides of the U-shaped plate 2 is greater than the diameter of the scissor shaft 1, and the difference is 1mm in this embodiment. By setting the distance between the inner end faces of the two sides of the U-shaped plate 2 to be greater than the diameter of the scissor shaft 1, the pin shaft 3 can float in the axial direction.

[0020] In this embodiment, the detection component further includes a second mounting plate 7, which is fixedly disposed relative to the first mounting plate. The second mounting plate 7 is disposed between the U-shaped plate 2 and the angle sensor 4. The second mounting plate 7 is provided with a third through hole 8. The angle sensor 4 is fixedly mounted on the second mounting plate 7, and the measuring shaft 9 of the angle sensor 4 passes through the third through hole 8 and is fixedly connected to the U-shaped plate 2. With this configuration, the angle sensor 4 will not float synchronously with the floating of the U-shaped plate 2 during the movement of the second mounting plate 7, thereby increasing the accuracy of the measurement results of the angle sensor 4.

[0021] Example 2: A high-altitude work platform includes a base, on which a scissor lift mechanism is mounted, and on which the scissor lift detection component described in the first aspect is mounted.

[0022] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A scissor lift detection assembly comprising a first mounting plate, a scissor shaft (1) and a U-shaped plate (2), characterized in that, The scissor lift shaft (1) is rotatably mounted on the first mounting plate, and the U-shaped plate (2) is sleeved on the scissor lift shaft (1). The detection component also includes a pin (3). The U-shaped plate (2) and the scissor lift shaft (1) are connected by the pin (3). The U-shaped plate (2) and / or the scissor lift shaft (1) and the pin (3) are in clearance fit. The detection component also includes an angle sensor (4), which is mounted on the U-shaped plate (2).

2. A scissor lift detection assembly according to claim 1, wherein, A first through hole (5) is provided on the scissor shaft (1), and a second through hole (6) is provided on both opposite end faces of the U-shaped plate (2).

3. A scissor lift detection assembly according to claim 2, wherein, The pin (3) and the first through hole (5) are in clearance fit or interference fit, and the pin (3) and the two second through holes (6) are in clearance fit.

4. A scissor lift detection assembly according to claim 3, wherein, The distance between the inner end faces of the two sides of the U-shaped plate (2) is greater than the diameter of the scissor shaft (1).

5. A scissor lift detection assembly according to claim 4, wherein, The detection assembly also includes a second mounting plate (7), which is fixedly disposed relative to the first mounting plate. The second mounting plate (7) is disposed between the U-shaped plate (2) and the angle sensor (4). A third through hole (8) is provided on the second mounting plate (7). The angle sensor (4) is fixedly disposed on the second mounting plate (7). The measuring shaft (9) of the angle sensor (4) passes through the third through hole (8) and is fixedly connected to the U-shaped plate (2).

6. An aerial work platform, characterized by It includes a base, on which a scissor lift mechanism is provided, and on which a scissor lift detection component as described in any one of claims 1-5 is provided.

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