Weighing structure for aerial work platform and scissor type aerial work platform

Abstract

The invention relates to a weighing structure for an aerial work platform, and the structure comprises a corner sensor, a sensor installation plate and an adapter block, the sensor installation plate is provided with an installation hole for the installation of the adapter block, the adapter block is connected between the corner sensor and a scissor shaft, the corner sensor is in linkage with the scissor shaft, the scissor shaft is connected between crossed scissor forks, and the scissor shaft is connected with the sensor installation hole. When the shear fork is lifted, the shear fork shaft and the shear fork rotate relatively and drive the rotation angle sensor to rotate. The weighing structure is ingenious, the load of the platform is detected through the rotation angle of the rotation angle sensor and the current value, the detection precision is high, the probability that the aerial work platform is overturned due to the fact that the load is too heavy can be effectively reduced, and therefore the personal safety of workers is effectively guaranteed. The scissor type aerial work platform also has the advantages of being high in detection precision and capable of effectively reducing the probability that the aerial work platform overloads to cause the phenomena of tipping and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of construction machinery, and specifically to a weighing structure for an aerial work platform and a scissor-type aerial work platform. Background Art

[0002] An aerial work platform is a movable device widely used in aerial work, equipment installation and maintenance in multiple fields such as construction, electricity, communication, and transportation. Due to its high efficiency, safety, and flexibility, the aerial work platform has gradually replaced traditional mobile scaffolds and hanging baskets and become an important tool in the field of aerial work.

[0003] Aerial work platforms can be divided into scissor-type, boom-type, mast-type, etc. according to the extension mechanism. Since the load-bearing capacity of the aerial work platform is limited, overloading may cause deformation, damage or even tipping of the platform structure, thus triggering serious safety accidents. To avoid accidents caused by overloading, aerial work platforms are often equipped with a platform load detection system, which can effectively prevent the platform from instability or damage caused by overloading, thus ensuring the safety of the operators.

[0004] The weighing sensors of existing aerial work platforms are usually installed on the brackets connected to the work platform. The installation position of the sensors installed here is vulnerable to interference from external structures, resulting in uneven force transmission, affecting the measurement accuracy, posing certain safety hazards, affecting the user experience, and being unfavorable for the popularization and application of the above-mentioned aerial work platforms in the market. Summary of the Invention

[0005] In order to overcome the defects in the above-mentioned prior art, the first object of the present invention is to provide a weighing structure for an aerial work platform. This weighing structure is ingenious. By the rotation angle of the corner sensor and the magnitude of the current value, it detects the amount of platform load. The detection accuracy is high, which can effectively reduce the probability of tipping and other phenomena caused by overloading of the aerial work platform, thus effectively ensuring the personal safety of the staff, enhancing the user experience, and being conducive to the popularization and application of the above-mentioned weighing structure for the aerial work platform on the aerial work platform. The second object of the present invention is to provide a scissor-type aerial work platform, which also has the advantages of high detection accuracy and can effectively reduce the probability of tipping and other phenomena caused by overloading of the aerial work platform by applying the above-mentioned weighing structure for the aerial work platform.

[0006] The above-mentioned weighing structure for an aerial work platform and the above-mentioned aerial work platform are technically interrelated and belong to the same inventive concept.

[0007] To achieve the above first object of the invention, the present invention adopts the following technical solutions: A weighing structure for an aerial work platform, comprising a corner sensor, a sensor mounting plate and an adapter block. The sensor mounting plate has mounting holes for connecting the adapter block and the corner sensor. The adapter block is connected between the corner sensor and the scissor shaft and is linked with the corner sensor and the scissor shaft. The scissor shaft is connected between the intersecting scissors. When the scissors are lifted, the scissor shaft rotates relative to the scissors and drives the corner sensor to rotate.

[0008] As a preferred embodiment of the present invention, the weighing structure further comprises a mounting plate, the sensor mounting plate is fixedly mounted on the mounting plate, and the mounting plate has through holes for connecting the adapter block and the corner sensor.

[0009] As a preferred embodiment of the present invention, the mounting plate is a flat plate and is arranged in a fitting manner with the scissors.

[0010] As a preferred embodiment of the present invention, the sensor mounting plate has a mounting portion for mounting the corner sensor, and the mounting holes are opened at the central position of the mounting portion.

[0011] As a preferred embodiment of the present invention, a shielding portion for protecting the corner sensor is provided at the top of the mounting portion.

[0012] As a preferred embodiment of the present invention, the shielding portion is vertically arranged with the mounting portion.

[0013] As a preferred embodiment of the present invention, a fixing portion bent outward is integrally formed on the side of the mounting portion.

[0014] As a preferred embodiment of the present invention, the adapter block is fixed to the scissor shaft through a first connecting piece.

[0015] As a preferred embodiment of the present invention, a semi-circular connecting hole is opened at the central position of the adapter block, and the back of the corner sensor has a connecting shaft with a semi-circular cross-section for connecting with the connecting hole. The connecting shaft is used for being embedded in the connecting hole to realize the connection between the adapter block and the corner sensor.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: A weighing structure for an aerial work platform in the present invention is simple and ingenious. By setting a corner sensor, a sensor mounting plate and an adapter block, the adapter block is installed on the scissor shaft, and then the corner sensor is connected to the adapter block. When performing no-load and full-load calibration, the ECU will record the rotation angles and current values at no-load and full-load. When the aerial work platform is lifted, the scissor shaft rotates relative to the scissor, which drives the corner sensor to rotate. The weight of the platform is detected by the rotation angle and current value of the corner sensor. When the current value exceeds the current value at full load, the scissor will stop lifting. This weighing structure has high detection accuracy, can effectively reduce the probability of tipping and other phenomena caused by overloading of the aerial work platform, thus effectively ensuring the personal safety of the staff, enhancing the use experience, and facilitating the popularization and application of the above-mentioned weighing structure for the aerial work platform on the aerial work platform.

[0017] In order to achieve the second object of the present invention, the following technical solutions are adopted: A scissor-type aerial work platform is applied with the above-mentioned weighing structure for an aerial work platform.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: A scissor-type aerial work platform, by applying the above-mentioned weighing structure for an aerial work platform, also has the advantages of high detection accuracy and can effectively reduce the probability of tipping and other phenomena caused by overloading of the aerial work platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the structural split of a weighing structure for an aerial work platform in the embodiment; Figure 2 is a schematic diagram of the structural split of a weighing structure for an aerial work platform in the embodiment; Figure 3 is a schematic diagram of the structure of the sensor mounting plate in the embodiment; Figure 4 is an installation schematic diagram of a weighing structure for an aerial work platform in the embodiment; Figure 5 is Figure 4 a schematic diagram of the enlarged structure at A in

[0020] Reference numerals: 1, corner sensor; 1-1, connecting shaft; 2, sensor mounting plate; 2-1, mounting hole; 2-2, mounting part; 2-3, shielding part; 2-4, fixing part; 3, adapter block; 4, scissor shaft; 5, scissor; 6, mounting plate; 7, connecting piece I. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be described below through specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention.

[0023] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] The weighing sensors of existing aerial work platforms are usually installed on brackets connected to the work platform. The installation position of the sensors installed here is vulnerable to interference from external structures, resulting in uneven force transmission, affecting the measurement accuracy, posing certain potential safety hazards, affecting the user experience, and being unfavorable for the promotion and application of the above-mentioned aerial work platforms in the market.

[0025] Embodiment: To solve the above technical problems, as Figures 1 to 5 shown, a weighing structure for an aerial work platform in this embodiment mainly consists of a corner sensor 1, a sensor mounting plate 2 and an adapter block 3. The above-mentioned sensor mounting plate 2 has a mounting hole 2-1 for the above-mentioned adapter block 3 to be connected to the above-mentioned corner sensor 1. The above-mentioned adapter block 3 is connected between the above-mentioned corner sensor 1 and the scissor shaft 4 and is linked with the above-mentioned corner sensor 1 and the above-mentioned scissor shaft 4. The above-mentioned scissor shaft 4 is connected between the intersecting scissors 5. When the above-mentioned scissors 5 are lifted, the above-mentioned scissor shaft 4 rotates relative to the above-mentioned scissors 5 and drives the above-mentioned corner sensor 1 to rotate. This weighing structure is simple and ingenious. By setting the corner sensor 1, the sensor mounting plate 2 and the adapter block 3, the adapter block 3 is installed on the scissor shaft 4, and then the corner sensor 1 is connected to the adapter block 3. When performing no-load and full-load calibrations, the ECU will record the rotation angles and current values at no-load and full-load. When the aerial work platform is lifted, the scissor shaft 4 rotates relative to the scissors 5, that is, drives the corner sensor 1 to rotate. The load of the platform is detected by the rotation angle and current value of the corner sensor 1. When the current value exceeds the current value at full load, the scissors will stop lifting.

[0026] Specifically, a countersunk screw hole is provided in the above-mentioned adapter block 3 in this embodiment. Correspondingly, a connection hole is formed on the surface of the scissor shaft 4 for installing the above-mentioned adapter block 3. By passing a locking bolt or other connecting member 7 through the countersunk screw hole and the connection hole, the above-mentioned adapter block 3 is fixedly connected to the above-mentioned scissor shaft 4. The setting of the countersunk screw hole can prevent the head of the bolt from wearing the back of the sensor mounting plate 2, and enable the surface of the adapter block 3 to be directly attached to the back of the sensor mounting plate 2, reducing the probability of detection error of the above-mentioned angle sensor 1. In order to prevent the above-mentioned adapter block 3 from rotating around the above-mentioned scissor shaft 4, two corresponding countersunk screw holes and connection holes are provided here, thereby limiting the position of the adapter block 3 on the scissor shaft 4.

[0027] To facilitate installation, reduce the installation difficulty, and to reduce the wear caused by the above-mentioned sensor mounting plate 2 to the scissor 5, the above-mentioned weighing structure in this embodiment is also provided with a mounting plate 6, and the above-mentioned sensor mounting plate 2 is fixedly installed on the above-mentioned mounting plate 6. Similarly, the above-mentioned mounting plate 6 has a through hole 6-1 for connecting the above-mentioned adapter block 3 and the above-mentioned angle sensor 1. The above-mentioned mounting plate 6 is a flat plate and is attached to the above-mentioned scissor 5 to ensure the overall stability of the weighing structure.

[0028] The above-mentioned sensor mounting plate 2 has a mounting portion 2-2 for installing the above-mentioned angle sensor 1, and the above-mentioned mounting hole 2-1 is opened at the center position of the above-mentioned mounting portion 2-2, which is convenient for installing the above-mentioned angle sensor 1 and at the same time convenient for the above-mentioned angle sensor 1 to be connected to the above-mentioned adapter block 3, reducing the overall assembly difficulty of the weighing structure, thereby enhancing the user experience.

[0029] To prevent falling objects above the above-mentioned angle sensor 1 from affecting the angle sensor 1, that is, to protect the above-mentioned angle sensor 1, this embodiment also has a shielding portion 2-3 provided at the top of the above-mentioned mounting portion 2-2. The above-mentioned shielding portion 2-3 is vertically arranged with the above-mentioned mounting portion 2-2. On the one hand, it reduces the production difficulty while ensuring the overall structural strength of the sensor mounting plate 2. On the other hand, it reduces the probability of external objects interfering with the angle sensor 1. To facilitate fixing the above-mentioned sensor mounting plate 2 on the above-mentioned mounting plate 6 or on the above-mentioned scissor 5, a fixing portion 2-4 bent outward is integrally formed on the side of the above-mentioned mounting portion 2-2 in this embodiment. The fixing portion 2-4 is fixed to the above-mentioned mounting plate 6 or the above-mentioned scissor 5 through connecting bolts or connecting screws and other connecting members, thereby ensuring the fixing of the installation position of the above-mentioned angle sensor 1.

[0030] In order to simplify the connection steps between the above-mentioned adapter block 3 and the above-mentioned corner sensor 1, ensure the connection effect, and prevent relative rotation between the above-mentioned adapter block 3 and the above-mentioned corner sensor 1, in this embodiment, a semi-circular connection hole 3-1 is provided at the center of the above-mentioned adapter block 3. The back of the above-mentioned corner sensor 1 has a connection shaft 1-1 with a semi-circular cross-section for connection with the above-mentioned connection hole 3-1. The above-mentioned connection shaft 1-1 is used to be embedded in the above-mentioned connection hole 3-1 to realize the connection between the above-mentioned adapter block 3 and the above-mentioned corner sensor 1.

[0031] A weighing structure for an aerial work platform in this embodiment is simple and ingenious. By arranging a corner sensor 1, a sensor mounting plate 2 and an adapter block 3, the adapter block 3 is installed on the scissor shaft 4, and then the corner sensor 1 is connected to the adapter block 3. When performing no-load and full-load calibration, the ECU will record the rotation angles and current values at no-load and full-load. When the aerial work platform is lifted, the scissor shaft 4 rotates relative to the scissor 5, which drives the corner sensor 1 to rotate. The weight of the platform is detected by the rotation angle and current value of the corner sensor 1. When the current value exceeds the current value at full load, the scissor 5 will stop lifting.

[0032] The weighing structure in this embodiment has high detection accuracy, can effectively reduce the probability of tipping and other phenomena caused by overloading of the aerial work platform, thus effectively ensuring the personal safety of the staff, enhancing the use experience, and facilitating the popularization and application of the above-mentioned weighing structure for the aerial work platform on the aerial work platform.

[0033] The weighing structure in the above-mentioned embodiment can also be applied to, including but not limited to, scissor-type aerial work platforms.

[0034] 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. The general principles defined herein can 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 be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0035] Although the following terms are used more frequently in the drawings herein: 1, corner sensor; 1-1, connection shaft; 2, sensor mounting plate; 2-1, mounting hole; 2-2, mounting part; 2-3, shielding part; 2-4, fixing part; 3, adapter block; 4, scissor shaft; 5, scissor; 6, mounting plate; 7, connecting piece 1, etc., the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A weighing structure for an aerial work platform, characterized in that: The invention comprises a rotation angle sensor (1), a sensor mounting plate (2) and an adapter block (3); the sensor mounting plate (2) has a mounting hole (2-1) for connecting the adapter block (3) and the rotation angle sensor (1); the adapter block (3) is connected between the rotation angle sensor (1) and a scissor shaft (4) and is linked to the rotation angle sensor (1) and the scissor shaft (4); the scissor shaft (4) is connected between mutually intersecting scissors (5); when the scissors (5) are lifted, the scissor shaft (4) and the scissors (5) rotate relative to each other and drive the rotation angle sensor (1) to rotate.

2. A weighing structure for an aerial work platform according to claim 1, characterized in that: The weighing structure further comprises a mounting plate (6), the sensor mounting plate (2) being fixedly mounted on the mounting plate (6), and the mounting plate (6) having a through hole (6-1) for connecting the adapter block (3) with the rotation angle sensor (1).

3. A weighing structure for an aerial work platform according to claim 2, characterized in that: The mounting plate (6) is a flat plate and is arranged to fit the scissors fork (5).

4. A weighing structure for an aerial work platform according to claim 1, characterized in that: The sensor mounting plate (2) has a mounting portion (2-2) for mounting the rotation angle sensor (1), and the mounting hole (2-1) is opened at the center position of the mounting portion (2-2).

5. A weighing structure for an aerial work platform according to claim 4, characterized in that: A shielding portion (2-3) for protecting the rotation angle sensor (1) is provided at the top of the mounting portion (2-2).

6. A weighing structure for an aerial work platform according to claim 5, characterized in that: The shielding portion (2-3) is arranged vertically to the mounting portion (2-2).

7. A weighing structure for an aerial work platform according to claim 6, characterized in that: A fixing portion (2-4) bent outwards is integrally formed on the side of the installation portion (2-2).

8. The weighing structure for an aerial work platform according to claim 1, characterized in that: The adapter block (3) is fixed to the scissor shaft (4) via a connecting piece 1 (7).

9. A weighing structure for an aerial work platform according to claim 8, characterized in that: A semicircular connecting hole (3-1) is provided at the center of the adapter block (3); a connecting shaft (1-1) with a semicircular cross section connected to the connecting hole (3-1) is provided on the back of the rotation angle sensor (1); the connecting shaft (1-1) is used to be embedded in the connecting hole (3-1) to realize the connection between the adapter block (3) and the rotation angle sensor (1).

10. A scissor-type aerial work platform, characterized in that: A weighing structure for an aerial work platform as described in any one of claims 1 to 9 is used.

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