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

Abstract

The utility model relates to a weighing structure used for an aerial work platform, comprising a rotation angle sensor, a sensor installing plate and an adapter block, the sensor installing plate is provided with an installing hole for installing the adapter block, the adapter block is connected between the rotation angle sensor and a scissor shaft, and the rotation angle sensor is linked with the scissor shaft. The shear fork shaft is connected between the crossed shear forks, and when the shear forks are lifted, the shear fork shaft and the shear forks 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 utility model relates to engineering machinery technical field, concretely is a kind of weighing structure and scissor type aerial work platform for aerial work platform. BACKGROUND

[0002] Aerial work platform is a kind of widely used in construction, power, communication, transportation and other fields of high-altitude operation, equipment installation and maintenance of mobility equipment.Aerial work platform gradually replaces the traditional mobile scaffold and basket due to its efficient, safe, flexible characteristics, and becomes the important tool in high-altitude operation field.

[0003] Aerial work platform can be divided into scissor type, boom type, mast type according to stretching mechanism.Due to the carrying capacity of aerial work platform is limited, overload can lead to platform structure deformation, damage or even overturning, thereby causing serious safety accidents.In order to avoid accidents caused by overload, aerial work platform is often equipped with platform load detection system, and load detection system can effectively prevent platform instability or damage caused by overload, thereby protecting the life safety of operating personnel.

[0004] The weighing sensor of existing aerial work platform is usually installed on bracket connected with operating platform, and the installation position of sensor installed here is easy to be disturbed by external structure, thereby leading to uneven force transmission, affecting measurement accuracy, existing certain security risk, affecting user's use experience, and being not conducive to the promotion and application of above-mentioned aerial work platform in market. UTILITY MODEL CONTENTS

[0005] In order to overcome the defects in the prior art, the first utility model purpose of the utility model provides a kind of weighing structure for aerial work platform, the weighing structure is ingenious, the rotation angle of corner sensor and the size of current value are used to detect how much platform load, detection precision is high, can effectively reduce the probability of occurrence of overturning and other phenomena caused by excessive load of aerial work platform, thereby effectively guaranteeing the personal safety of staff, enhancing use experience, and being conducive to the promotion and application of above-mentioned weighing structure for aerial work platform on aerial work platform.The second utility model purpose of the utility model provides a kind of scissor type aerial work platform, by applying above-mentioned weighing structure for aerial work platform, also has the advantages of high detection precision, can effectively reduce the probability of occurrence of overturning and other phenomena caused by excessive load of aerial work platform.

[0006] The weighing structure for aerial work platform and the aerial work platform are technically related to each other and belong to the same utility model concept.

[0007] To achieve the above first utility model purposes, the utility model discloses the following technical scheme: a kind of weighing structure for aerial work platform, including corner sensor, sensor mounting plate and adapter block, the sensor mounting plate has the mounting hole for the adapter block with the corner sensor realizes connection, the adapter block is connected between the corner sensor and scissor shaft and is linked with the corner sensor and the scissor shaft, the scissor shaft is connected between mutually intersecting scissor, when the scissor is lifted, the scissor shaft rotates relative to the scissor and drives the corner sensor to rotate.

[0008] As a preferred scheme of the utility model, the weighing structure further includes mounting plate, the sensor mounting plate is fixedly installed on the mounting plate, and the mounting plate has a through hole for connecting the adapter block and the corner sensor.

[0009] As a preferred scheme of the utility model, the mounting plate is a flat plate and is arranged in close contact with the scissor.

[0010] As a preferred scheme of the utility model, the sensor mounting plate has a mounting portion for mounting the corner sensor, and the mounting hole is arranged at the center position of the mounting portion.

[0011] As a preferred scheme of the utility model, an obstruction portion is arranged at the top of the mounting portion for protecting the corner sensor.

[0012] As a preferred scheme of the utility model, the obstruction portion is arranged perpendicularly to the mounting portion.

[0013] As a preferred scheme of the utility model, a fixed portion is integrally formed on the side edge of the mounting portion and bends outward.

[0014] As a preferred scheme of the utility model, the adapter block is fixed to the scissor shaft by a connecting piece.

[0015] As a preferred scheme of the utility model, a connecting hole in the shape of a semicircle is arranged at the center position of the adapter block, the back of the corner sensor has a connecting shaft in the shape of a semicircle in cross section, and the connecting shaft is used for embedding in the connecting hole to realize the connection between the adapter block and the corner sensor.

[0016] Compared with the prior art, the weight structure for the aerial work platform has the advantages that: the weight structure is simple and ingenious, the rotary angle sensor, the sensor mounting plate and the adapter block are arranged, the adapter block is mounted on the scissor shaft, the rotary angle sensor is connected with the adapter block, the ECU records the rotary angle and the current value when the aerial work platform is in the empty load state and the full load state, when the aerial work platform is lifted, the scissor shaft rotates relative to the scissor, the rotary angle sensor is driven to rotate, the load of the platform is detected according to the rotary angle and the current value of the rotary angle sensor, when the current value exceeds the current value in the full load state, the scissor stops lifting, the weight structure has high detection precision, the probability of the aerial work platform being overturned due to the overload is effectively reduced, the personal safety of the workers is effectively ensured, the use experience is enhanced, and the weight structure is conducive to the promotion and application of the weight structure for the aerial work platform.

[0017] In order to achieve the second utility model purpose, the utility model adopts the following technical scheme: a scissor type aerial work platform applies the weight structure for the aerial work platform.

[0018] Compared with the prior art, the utility model has the advantages that: the scissor type aerial work platform has the advantages of high detection precision, and the probability of the aerial work platform being overturned due to the overload is effectively reduced. DRAWINGS

[0019] Figure 1 It is the structure split schematic view of the weight structure for the aerial work platform in the embodiment;

[0020] Figure 2 It is the structure split schematic view of the weight structure for the aerial work platform in the embodiment;

[0021] Figure 3 It is the structure schematic view of the sensor mounting plate in the embodiment;

[0022] Figure 4 It is the installation schematic view of the weight structure for the aerial work platform in the embodiment;

[0023] Figure 5 It is Figure 4 The structure enlarged schematic view of A in the embodiment.

[0024] The drawing mark: 1, rotary angle sensor; 1-1, connecting shaft; 2, sensor mounting plate; 2-1, mounting hole; 2-2, mounting portion; 2-3, shielding portion; 2-4, fixed portion; 3, adapter block; 4, scissor shaft; 5, scissor; 6, mounting plate; 7, connecting piece one. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the present utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0028] The existing load cells of aerial work platforms are usually installed on brackets connected to the platform. The installation position of the sensors is easily affected by external structures, which can lead to uneven force transmission, affect measurement accuracy, pose certain safety hazards, and affect the user experience. This is not conducive to the promotion and application of the aerial work platforms in the market.

[0029] Example: To solve the above-mentioned technical problems, such as Figures 1 to 5 As shown, a weighing structure for an aerial work platform in this embodiment mainly consists of an angle sensor 1, a sensor mounting plate 2, and an adapter block 3. The sensor mounting plate 2 has mounting holes 2-1 for connecting the adapter block 3 to the angle sensor 1. The adapter block 3 connects the angle sensor 1 and the scissor lift shaft 4 and is linked to both. The scissor lift shaft 4 connects to the intersecting scissor lifts 5. When the scissor lifts 5, the scissor lift shaft 4 rotates relative to the scissor lifts 5, causing the angle sensor 1 to rotate. This weighing structure is simple and ingenious. By setting the angle sensor 1, the sensor mounting plate 2, and the adapter block 3, mounting the adapter block 3 on the scissor lift shaft 4, and connecting the angle sensor 1 to the adapter block 3, the ECU records the rotation angle and current value during no-load and full-load calibration. When the aerial work platform is lifted, the scissor shaft 4 and the scissor fork 5 rotate relative to each other, which drives the rotation angle sensor 1 to rotate. The rotation angle of the rotation angle sensor 1 and the magnitude of the current value are used to detect the load of the platform. When the current value exceeds the current value when fully loaded, the scissor fork will stop lifting.

[0030] Specifically, the adapter block 3 in the embodiment is provided with a countersunk hole, and a connecting hole is formed on the surface of the scissors shaft 4 for mounting the adapter block 3. The adapter block 3 and the scissors shaft 4 are fixed by connecting members 7 such as locking bolts in the countersunk hole and the connecting hole. The countersunk hole can prevent the head of the bolt from causing wear on the back of the sensor mounting plate 2, and the surface of the adapter block 3 is directly attached to the back of the sensor mounting plate 2, thereby reducing the probability of detection error of the corner sensor 1. In order to prevent the adapter block 3 from rotating around the scissors shaft 4, the countersunk hole and the connecting hole are provided with two corresponding holes, thereby limiting the position of the adapter block 3 on the scissors shaft 4.

[0031] In order to facilitate installation and reduce installation difficulty, and to reduce wear on the scissors 5 caused by the sensor mounting plate 2, the weighing structure in the embodiment is further provided with a mounting plate 6, and the sensor mounting plate 2 is fixedly mounted on the mounting plate 6. Similarly, the mounting plate 6 has a through hole 6-1 for connecting the adapter block 3 and the corner sensor 1. The mounting plate 6 is a flat plate and is attached to the scissors 5 to ensure the stability of the overall weighing structure.

[0032] The sensor mounting plate 2 has a mounting portion 2-2 for mounting the corner sensor 1, and the mounting hole 2-1 is formed at the center of the mounting portion 2-2. This facilitates the installation of the corner sensor 1 and the connection between the corner sensor 1 and the adapter block 3, reduces the assembly difficulty of the overall weighing structure, and enhances the user's experience.

[0033] In order to prevent falling objects above the corner sensor 1 from affecting the corner sensor 1, i.e. to protect the corner sensor 1, the embodiment further provides a shielding portion 2-3 on the top of the mounting portion 2-2. The shielding portion 2-3 is perpendicular to the mounting portion 2-2, which reduces the manufacturing difficulty and ensures the structural strength of the overall sensor mounting plate 2, and reduces the probability of interference of external objects on the corner sensor 1. In order to facilitate the fixing of the sensor mounting plate 2 on the mounting plate 6 or on the scissors 5, the embodiment further integrally forms a bending outward fixing portion 2-4 on the side of the mounting portion 2-2. The fixing portion 2-4 is fixed to the mounting plate 6 or the scissors 5 by connecting members such as connecting bolts or connecting screws, thereby ensuring the fixing of the mounting position of the corner sensor 1.

[0034] In order to simplify the connecting step between the adapter block 3 and the corner sensor 1 and ensure the connecting effect, and avoid relative rotation between the adapter block 3 and the corner sensor 1, a connecting hole 3-1 in a semicircular shape is formed at the center of the adapter block 3 in the embodiment, the corner sensor 1 has a connecting shaft 1-1 in a semicircular shape in cross section connected with the connecting hole 3-1, and 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 corner sensor 1.

[0035] The weighing structure for aerial work platforms in the embodiment is simple and ingenious, the corner sensor 1, the sensor mounting plate 2 and the adapter block 3 are arranged, the adapter block 3 is installed on the scissor shaft 4, and then the corner sensor 1 is connected with the adapter block 3, so that the ECU can record the rotation angle and the current value when the aerial work platform is in the empty load and the full load state. When the aerial work platform is lifted, the scissor shaft 4 rotates relative to the scissor 5, so as to drive the corner sensor 1 to rotate, and the rotation angle and the current value of the corner sensor 1 are used to detect the load of the platform, and when the current value exceeds the current value in the full load state, the scissor 5 stops lifting.

[0036] The weighing structure in the embodiment has high detection precision, can effectively reduce the probability of the aerial work platform being overturned due to excessive load, effectively ensures the personal safety of the workers, enhances the use experience, and is favorable to the popularization and application of the weighing structure for aerial work platforms in the aerial work platforms.

[0037] The weighing structure in the embodiment can also be applied to aerial work platforms including but not limited to scissor-type aerial work platforms.

[0038] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application; therefore, the present application 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.

[0039] Although the terms: 1, corner sensor; 1-1, connecting shaft; 2, sensor mounting plate; 2-1, mounting hole; 2-2, mounting portion; 2-3, shielding portion; 2-4, fixing portion; 3, adapter block; 4, scissor shaft; 5, scissor; 6, mounting plate; 7, connecting piece one, etc. are used more in the drawings in this paper, the possibility of using other terms is not excluded. The use of these terms is only to facilitate the description and explanation of the essence of the utility model; it is contrary to the spirit of the utility model to interpret them as any kind of additional limitation.

Claims

1. A weighing structure for an aerial work platform, characterized by: The weighing structure comprises a corner 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 corner sensor (1), the adapter block (3) is connected between the corner sensor (1) and a scissors shaft (4) and linked with the corner sensor (1) and the scissors shaft (4), the scissors shaft (4) is connected between scissors (5) crossing each other, when the scissors (5) are lifted, the scissors shaft (4) rotates relative to the scissors (5) and drives the corner 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) is fixedly installed on the mounting plate (6), and the mounting plate (6) has a through hole (6-1) for connecting the adapter block (3) and the corner 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 in close contact with the scissors (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 corner sensor (1), and the mounting hole (2-1) is arranged at the center of the mounting portion (2-2).

5. A weighing structure for an aerial work platform according to claim 4, characterized in that: An shielding portion (2-3) for protecting the corner sensor (1) is arranged 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 perpendicularly 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 outward is integrally formed on the side edge of the mounting portion (2-2).

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

9. A weighing structure for an aerial work platform according to claim 8, characterized in that: A semicircular connecting hole (3-1) is arranged at the center of the adapter block (3), the corner sensor (1) has a connecting shaft (1-1) with a semicircular cross section at the back thereof, the connecting shaft (1-1) is arranged in the connecting hole (3-1) to connect the adapter block (3) and the corner sensor (1).

10. A scissors aerial work platform, characterized by: The application discloses a weighing structure for a high-altitude operation platform.

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