Weighing device of boom type aerial work platform

Abstract

The utility model discloses a weighing device of an arm support type aerial work platform, which comprises a work platform and a bracket, the bracket comprises a vertical supporting part and a transverse supporting part which are connected with each other, the vertical supporting part and the transverse supporting part are respectively provided with a weighing device, and the bracket is connected with the work platform through the weighing devices. The weighing device is installed in a multi-plane mode, namely a non-coplanar mode, the psychological pressure of working platform shaking caused by a single-plane installation mode on operators is reduced, the safety and efficiency during operation are improved, meanwhile, the assembly and maintenance difficulty is reduced, and the weighing device is easy to disassemble. A gap adjusting part is arranged, so that the safety, the measurement accuracy and the connection reliability are improved while gaps are compensated and shaking is prevented; and the vertical supporting part and the transverse supporting part are respectively arranged relative to the working platform, so that the connection reliability and the measurement accuracy are improved.

Description

Technical Field

[0001] The utility model relates to a weighing device for an arm-type aerial work platform, belonging to the technical field of engineering machinery. Background Art

[0002] The boom-type aerial work platform is a kind of equipment used for aerial work, which has many characteristics. First of all, it is flexible and convenient to move. At the same time, it can cross certain obstacles and perform multi-point operations in one place, ensuring the efficiency of the operation. It also performs well in terms of safety, so it is widely used in installation, maintenance and climbing operations.

[0003] Since the boom-type aerial work platform is a device used for aerial work, the safety requirements for the product are extremely high. In actual operation, overloading is strictly prohibited, and the center of gravity of the product may shift during lifting operations. Due to the particularity of the product structure, there are also strict requirements for the actual load capacity. In order to meet this requirement, a weighing device is usually installed on the product.

[0004] At present, the weighing device of the boom-type aerial work platform mainly adopts a single-point weighing mode or a four-point weighing mode. The working principle of the single-point weighing mode is to install the weighing sensor on a bracket connected to the boom-type work platform, and these sensors are located between the work platform and the bracket. When a certain point on the symmetrical midline of the work platform contacts the weighing sensor, an electrical signal is generated, thereby achieving the purpose of weighing. In order to ensure accuracy, the center of gravity of the work platform needs to be located on the midline, which places high demands on the processing accuracy of the overall structural parts, thereby increasing costs. In addition, when weighing, it is necessary to ensure that the load is symmetrically distributed on the left and right. Therefore, the single-point weighing mode has problems such as low weighing accuracy, high manufacturing cost and complex operation.

[0005] Another weighing mode is the four-point weighing mode, in which the weighing sensors are evenly distributed at four points on the bottom bracket of the boom work platform. The work platform is directly placed on these four sensors and connected by bolts. Although this mode can meet the accuracy requirements of weighing, the assembly of the four sensors is limited to a single plane, which is too simple and easily causes the platform to shake, thus affecting the work effect. Summary of the invention

[0006] Purpose of the invention: In order to solve the above technical problems, the utility model provides a weighing device for an arm-type aerial work platform, which improves the stability of the work platform by raising the assembly method of the weighing device to multiple sides.

[0007] Technical solution: A weighing device for an arm-type aerial work platform, including a working platform and a bracket, wherein the bracket includes a vertical support portion and a lateral support portion connected to each other, and weighing devices are respectively installed on the vertical support portion and the lateral support portion, and the bracket is connected to the working platform through the weighing device.

[0008] The present invention avoids the traditional single-plane installation method of the weighing device by installing the weighing device on the vertical support part and the horizontal support part in a non-coplanar manner, reduces the psychological pressure on the operators caused by the shaking of the working platform caused by the single-plane installation method, improves the safety and efficiency of the operation, and reduces the difficulty of assembly and maintenance. It is easy to disassemble, and in order to ensure the weighing accuracy, the bracket and the working platform are in contact only through the weighing device.

[0009] Preferably, in order to improve the measurement accuracy and installation stability, at least three weighing devices are provided, and the weighing devices on the vertical support part and the horizontal support part are symmetrically arranged respectively.

[0010] At least three weighing devices are provided, which means that the number of weighing devices installed on the vertical support part and the transverse support part is such that an odd number of weighing devices are installed on the vertical support part and an even number of weighing devices are installed on the transverse support part, or an even number of weighing devices are installed on the vertical support part and an odd number of weighing devices are installed on the transverse support part, or the same number of weighing devices are used and the weighing devices on the vertical support part and the transverse support part are symmetrically arranged, so as to make the measurement accurate and the installation stable.

[0011] Preferably, in order to improve the installation stability, the working platform and the weighing device are connected by a first bolt and nut, and the weighing device and the bracket are connected by a second bolt and nut.

[0012] Preferably, in order to completely transmit the force to the weighing device, a gap adjustment portion is provided between the working platform and the weighing device.

[0013] Due to deformation caused by processing or welding, a gap will be created between the working platform and the weighing device. During the weighing process, the gap will cause the force acting on the weighing device to be unable to be fully transmitted to the weighing device due to the gap. The force error of each weighing device will eventually lead to the measurement accuracy. In addition, due to the existence of the gap, the working platform is more likely to shake when the operator moves during the operation, affecting safety and operation results. Therefore, the gap adjustment part can be used to fully transmit the force to the weighing device, thereby improving safety and measurement accuracy, while also improving connection reliability.

[0014] Preferably, in order to completely transmit the force to the weighing device, the gap adjusting part is a disc-shaped gasket.

[0015] Since the middle part of the disc gasket is arc-shaped, the disc gasket is installed between the working platform and the weighing device. A cavity will be formed between the middle part of the disc gasket and the working platform. When weighing and force are applied, each disc gasket will generate a corresponding deformation amount to fill the gap according to the different sizes of each gap. At the same time, the disc gasket is a rigid part. During or after the gap filling process, the force can still be fully transmitted to the weighing device, which not only fills the gap and prevents shaking, but also ensures the measurement accuracy of each weighing device.

[0016] Preferably, in order to prevent the deformation of a single disc-shaped gasket from failing to meet the gap size, the gap adjustment portion includes two symmetrically mounted disc-shaped gaskets. A cavity is formed between the symmetrically mounted disc-shaped gaskets to increase the deformation space so that the gap size is met. At the same time, since the disc-shaped gasket is a rigid part, when the force applied cannot cause it to deform, the force can still be fully transmitted, thereby improving safety, connection reliability, and measurement accuracy.

[0017] Preferably, in order to improve connection reliability, the overlapping projection surface of the vertical support portion and the side surface of the working platform occupies at least 1 / 2 of the side surface of the working platform.

[0018] The overlapping projection surface refers to the overlapping surface between the vertical support part and the projection surface of the side of the working platform. If the overlapping projection surface occupies less than 1 / 2 of the area of ​​the side of the working platform, the torque applied to the weighing device will become larger, making it more susceptible to damage, thereby reducing the reliability of the connection.

[0019] Preferably, in order to improve the measurement accuracy, the overlapping projection surface of the lateral support portion and the bottom of the working platform occupies at least 1 / 2 of the bottom of the working platform.

[0020] The overlapping projection surface refers to the overlapping surface between the projection surface of the lateral support part and the bottom of the working platform. If the overlapping projection surface occupies less than 1 / 2 of the area of ​​the bottom of the working platform, then when the operator stands at the edge of the overlapping projection surface, it will affect the measurement accuracy.

[0021] Preferably, in order to improve the connection reliability, reinforcing ribs are provided between the vertical supporting portion and the horizontal supporting portion.

[0022] Beneficial effects: The utility model installs the weighing device in a multi-plane, i.e. non-coplanar, form, thereby reducing the psychological pressure on the operator caused by the shaking of the working platform caused by the single-plane installation mode, improving the safety and efficiency of the operation, while reducing the difficulty of assembly and maintenance, and making it easy to disassemble. In addition, by setting a gap adjustment part, the gap is filled to prevent shaking, while improving safety, measurement accuracy and connection reliability; by setting the relative positions of the vertical support part and the horizontal support part with the working platform, the connection reliability and measurement accuracy are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 This is an exploded view of the overall structure of the utility model;

[0025] Figure 2 This is the overall assembly diagram of the utility model;

[0026] Figure 3 This is the installation diagram of the weighing device of the utility model;

[0027] Figure 4 This is the installation diagram of the gap adjustment part of the utility model. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] like Figure 1 and Figure 2 As shown, a weighing device for a boom-type aerial work platform includes a working platform 1 and a bracket 2, wherein the bracket 2 includes a vertical support portion 21 and a horizontal support portion 22 connected to each other, and weighing devices 3 are respectively installed on the vertical support portion 21 and the horizontal support portion 22, and the bracket 2 is connected to the working platform 1 through the weighing device 3.

[0032] By installing the weighing device 3 on the vertical support part 21 and the horizontal support part 22 in a non-coplanar manner, the traditional single-plane installation method of the weighing device 3 is avoided, and the psychological pressure on the operators caused by the shaking of the working platform 1 caused by the single-plane installation method is reduced, the safety and efficiency of the operation are improved, and the difficulty of assembly and maintenance is reduced, and disassembly is easy.

[0033] like Figure 3 As shown, in order to improve the measurement accuracy and installation stability, at least three weighing devices 3 are provided, and the weighing devices 3 on the vertical support portion 21 and the horizontal support portion 22 are symmetrically arranged.

[0034] Providing at least three weighing devices 3 means that the number of weighing devices 3 installed on the vertical support part 21 and the transverse support part 22 is such that an odd number of weighing devices 3 are installed on the vertical support part 21 and an even number of weighing devices 3 are installed on the transverse support part 22, or an even number of weighing devices 3 are installed on the vertical support part 21 and an odd number of weighing devices 3 are installed on the transverse support part 22, or the same number of weighing devices 3 are used and the weighing devices 3 on the vertical support part 21 and the transverse support part 22 are symmetrically arranged, so as to make the measurement accurate and the installation stable.

[0035] In order to improve the installation stability, the working platform 1 and the weighing device 3 are connected by a first bolt and nut 4 , and the weighing device 3 and the bracket 2 are connected by a second bolt and nut 5 .

[0036] like Figure 4 As shown, in order to completely transmit the force to the weighing device 3 , a gap adjustment portion 6 is provided between the working platform 1 and the weighing device 3 .

[0037] Deformation due to processing or welding may cause a gap between the work platform 1 and the weighing device 3. During the weighing process, the gap may cause the force acting on the weighing device 3 to be unable to be fully transmitted to the weighing device 3 due to the gap. The force error of each weighing device 3 will eventually lead to the measurement accuracy. In addition, due to the existence of the gap, the work platform 1 is more likely to shake when the operator moves during the operation, affecting the safety and operation effect. Therefore, the gap adjustment part 6 is used to fully transmit the force to the weighing device 3, thereby improving safety and measurement accuracy, while also improving the connection reliability.

[0038] In order to completely transmit the force to the weighing device 3, the gap adjustment part 6 is a disc-shaped gasket.

[0039] Since the middle part of the disc-shaped gasket is arc-shaped, the disc-shaped gasket is installed between the working platform 1 and the weighing device 3. A cavity will be formed between the middle part of the disc-shaped gasket and the working platform 1. When the weighing force begins, each disc-shaped gasket will generate a corresponding deformation amount to fill the gap according to the different sizes of each gap. At the same time, the disc-shaped gasket is a rigid part. During the gap-filling process or after the gap-filling, the force can still be fully transmitted to the weighing device 3, which not only makes up for the gap and prevents shaking, but also ensures the measurement accuracy of each weighing device 3.

[0040] In order to prevent the deformation of a single disc-shaped gasket from failing to meet the gap size, the gap adjustment portion 6 includes two symmetrically installed disc-shaped gaskets.

[0041] A cavity is formed between the symmetrically installed disc gaskets to increase the deformation space so that it can meet the gap size. At the same time, since the disc gasket is a rigid part, when the force it is subjected to cannot cause it to deform, it can still fully transmit the force, thereby improving safety, connection reliability and measurement accuracy.

[0042] In order to improve the connection reliability, the overlapping projection surface of the vertical support portion 21 and the side surface of the working platform 1 occupies at least 1 / 2 of the side surface of the working platform 1 .

[0043] The overlapping projection surface refers to the overlapping surface between the vertical support portion 21 and the projection surface of the side of the working platform 1. If the overlapping projection surface occupies less than 1 / 2 of the area of ​​the side of the working platform 1, the torque applied to the weighing device 3 will increase, making it more susceptible to damage, thereby reducing the reliability of the connection.

[0044] In order to improve the measurement accuracy, the overlapping projection surface between the lateral support portion 22 and the bottom of the working platform 1 occupies at least 1 / 2 of the bottom of the working platform 1 .

[0045] The overlapping projection surface refers to the overlapping surface between the lateral support portion 22 and the projection surface of the bottom of the working platform 1. If the overlapping projection surface occupies less than 1 / 2 of the area of ​​the bottom of the working platform 1, then when the operator stands at the edge of the overlapping projection surface, it will affect the measurement accuracy.

[0046] In order to improve the connection reliability, a reinforcing rib 7 is provided between the vertical support portion 21 and the horizontal support portion 22 .

[0047] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0048] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be 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 will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A weighing device for an arm-type aerial work platform, comprising a working platform (1) and a bracket (2), characterized in that: The bracket (2) comprises a vertical support portion (21) and a transverse support portion (22) which are connected to each other, and a weighing device (3) is respectively installed on the vertical support portion (21) and the transverse support portion (22), and the bracket (2) is connected to the working platform (1) via the weighing device (3).

2. The weighing device for the boom-type aerial work platform according to claim 1 is characterized in that: At least three weighing devices (3) are provided, and the weighing devices (3) on the vertical support portion (21) and the horizontal support portion (22) are symmetrically arranged respectively.

3. The weighing device of the boom-type aerial work platform according to claim 2 is characterized in that: The working platform (1) and the weighing device (3) are connected via first bolts and nuts (4), and the weighing device (3) and the bracket (2) are connected via second bolts and nuts (5).

4. The weighing device for the boom-type aerial work platform according to claim 3 is characterized in that: A gap adjustment portion (6) is provided between the working platform (1) and the weighing device (3).

5. The weighing device for the boom-type aerial work platform according to claim 4 is characterized in that: The gap adjustment portion (6) is a disc-shaped gasket.

6. The weighing device for the boom-type aerial work platform according to claim 5, characterized in that: The gap adjustment portion (6) comprises two symmetrically mounted disc-shaped gaskets.

7. The weighing device for the boom-type aerial work platform according to claim 6, characterized in that: The overlapping projection surface of the vertical support portion (21) and the side surface of the working platform (1) occupies at least 1 / 2 of the side surface of the working platform (1).

8. The weighing device for the boom-type aerial work platform according to claim 7, characterized in that: The overlapping projection surface of the lateral support portion (22) and the bottom of the working platform (1) occupies at least 1 / 2 of the bottom of the working platform (1).

9. The weighing device for the boom-type aerial work platform according to claim 8, characterized in that: A reinforcing rib (7) is provided between the vertical support portion (21) and the horizontal support portion (22).

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