Overhead working truck
By installing weighing sensors in the wheel system structure of the aerial working vehicle, the complex problem of the gravity detection unit failure in the prior art is solved, and a more efficient and safe maintenance process is achieved.
Patent Information
- Application Number
- CN202422203842.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-09
AI Technical Summary
When the gravity detection unit of the existing scissor aerial working platform fails, the aerial platform or liftable fork rack needs to be removed for replacement. The disassembly and assembly process is complicated and requires driving assistance, which affects maintenance efficiency and safety.
A high-altitude working vehicle is designed, and its weighing sensor is installed in the wheel system structure. When it fails, it only needs to remove the wheel system structure to be repaired, which simplifies the disassembly process and avoids the need for driving assistance.
It improves the maintenance efficiency and safety of high-altitude working vehicles, simplifies the replacement process of weighing sensors, and reduces the difficulty of repairs.
Smart Images
Figure CN223033078U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of aerial work platforms, in particular to an aerial work vehicle. Background Art
[0002] The scissor aerial work platform is a widely used lifting mechanical structure, which has a lifting function and can stop arbitrarily within the lifting range, facilitating construction. At present, scissor aerial work platforms have been widely used in shipbuilding, construction, municipal engineering, electricity, communication, gardening, stadiums, airports, ports, fire advertising devices and various large industrial and mining enterprises and other places.
[0003] Generally speaking, the scissor aerial work platform includes an aerial platform and a liftable fork frame. The liftable fork frame is installed at the bottom of the aerial platform to drive the platform to lift and maintain the heavy pressure on the platform. A gravity detection unit is provided on the fork slide of the liftable fork frame or the platform slide of the aerial platform. The weight and the angle obtained by the angle detection unit are used to determine whether the load object in the working platform is overloaded. However, when the gravity detection unit fails, it is necessary to disassemble the aerial platform or the liftable fork frame and then replace it. However, the disassembly and assembly of the aerial platform and the liftable fork frame are relatively difficult and require the assistance of a crane.
[0004] Therefore, there is an urgent need for an aerial work vehicle to solve the above technical problems. Content of the Utility Model
[0005] The purpose of the utility model is to provide an aerial work vehicle, which can easily replace the detection unit and improve the safety and stability of the whole machine.
[0006] To achieve the above object, the utility model adopts the following technical solutions:
[0007] An aerial work vehicle, comprising:
[0008] A working platform for carrying a target object;
[0009] A fork frame assembly installed at the bottom of the working platform, the height of the fork frame assembly being adjustable;
[0010] A chassis installed at the bottom of the fork frame assembly;
[0011] A wheel train structure installed at the bottom of the chassis to move the chassis;
[0012] A weighing sensor installed on the wheel train structure for weighing.
[0013] As a preferred technical solution of the above-mentioned aerial work vehicle, the wheel train structure includes two front wheel components. Each front wheel component includes a front hub and a steering knuckle structure. The front hub is connected to the steering knuckle structure, and the steering knuckle structure is installed on the chassis. The weighing sensor includes two front wheel weighing sensors, and the two front wheel weighing sensors are arranged in one-to-one correspondence with the two front wheel components. The front wheel weighing sensor is arranged at the top of the kingpin of the steering knuckle structure.
[0014] As a preferred technical solution of the above-mentioned aerial work vehicle, the steering knuckle structure further includes a sleeve, the kingpin is rotatably nested in the sleeve, and at least part of the front wheel weighing sensor is arranged in the sleeve.
[0015] As a preferred technical solution of the above-mentioned aerial work vehicle, gaskets are arranged on the top of the front wheel weighing sensor and the lower end face of the kingpin.
[0016] As a preferred technical solution of the above-mentioned aerial work vehicle, the wheel train structure includes two rear wheel components. Each rear wheel component includes a rear hub and a brake. The weighing sensor includes two rear wheel weighing sensors, and the two rear wheel components are arranged in one-to-one correspondence with the two rear wheel weighing sensors. The rear wheel weighing sensor is installed on the rear hub or the brake and is in contact with the rear wheel support plate of the chassis.
[0017] As a preferred technical solution of the above-mentioned aerial work vehicle, an adjusting piece is arranged between the rear wheel weighing sensor and the rear wheel support plate.
[0018] As a preferred technical solution of the above-mentioned aerial work vehicle, the aerial work vehicle further includes a corner sensor, and the corner sensor is arranged at the connection between the chassis and the fork assembly.
[0019] As a preferred technical solution of the above-mentioned aerial work vehicle, the corner sensor is a corner potentiometer.
[0020] As a preferred technical solution of the above-mentioned aerial work vehicle, the fork assembly includes a fork body and a lifting cylinder. The cylinder body of the lifting cylinder is fixed to the chassis, and the working rod of the lifting cylinder is fixedly connected to the fork body.
[0021] As a preferred technical solution of the above-mentioned aerial work vehicle, the lifting cylinder is a hydraulic cylinder or an electric cylinder.
[0022] Advantages of the utility model:
[0023] The aerial work platform vehicle includes a working platform, a fork assembly, a chassis, a wheel system structure, and a weighing sensor. The working platform is used to carry the target object. The fork assembly is installed at the bottom of the working platform, and the height of the fork assembly is adjustable. The chassis is installed at the bottom of the fork assembly, and the weighing sensor is installed in the wheel system structure for weighing. For the aerial work platform vehicle provided by the present utility model, since the weighing sensor is installed in the wheel system structure, when the weighing sensor fails, during maintenance, only a jack is needed to assist in removing the wheel system structure. Compared with being arranged on the fork slideway or the platform slideway, the disassembly is easier and does not require the assistance of a hoisting vehicle. Description of the Drawings
[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments of the present utility model. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present utility model and these drawings.
[0025] Figure 1 It is the front view of the aerial work platform vehicle provided by the embodiment of the present utility model;
[0026] Figure 2 It is Figure 1 the sectional view taken along line A - A in
[0027] Figure 3 It is Figure 1 the partial enlarged view at position C in
[0028] Figure 4 It is Figure 2 the partial enlarged view at position B in
[0029] Figure 5 It is the axonometric view of the aerial work platform vehicle provided by the embodiment of the present utility model.
[0030] In the figure:
[0031] 1, working platform; 2, fork body; 3, chassis; 31, rear wheel support plate; 4, front hub; 5, rear hub; 6, steering knuckle structure; 61, main pin; 62, sleeve; 7, gasket; 8, front wheel weighing sensor; 9, rear wheel weighing sensor; 10, corner sensor. Detailed Embodiments
[0032] The following will further elaborate on the present utility model in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model and are not intended to limit the present utility model. Additionally, it should be noted that for the sake of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.
[0033] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0034] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above and to the right", and "on the top" of the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below and to the left", and "under the bottom" of the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.
[0035] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, 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 should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0036] Aiming at the problem that the weighing sensor in the prior art is affected by the environment and the oil pipe diameter, a high-altitude work vehicle is provided in the present utility model, which can reduce the influence of the environmental temperature and the oil pipe diameter on the detection structure, and is easy to replace the pressure detection unit, improving the safety and stability of the whole machine.
[0037] As Figure 1As shown in the figure, the aerial work vehicle includes a working platform 1, a fork assembly, a chassis 3, a wheel system structure, and a weighing sensor. The working platform 1 is used to carry the target object, and the carried object includes an operator and / or working materials. The fork assembly is installed at the bottom of the working platform 1, and the height of the fork assembly is adjustable. The chassis 3 is installed at the bottom of the fork assembly, and the wheel system structure is installed at the bottom of the chassis 3 to enable the chassis 3 to move. The weighing sensor is installed on the wheel system structure for weighing. For the aerial work vehicle provided by the present utility model, since the weighing sensor is installed on the wheel system structure, when the weighing sensor fails, during maintenance, only a jack is needed to assist in removing the wheel system structure. Compared with being arranged on the fork slideway or the platform slideway, the disassembly is easier and does not require the assistance of a hoist.
[0038] Specifically, as shown in combination with Figure 1 、 Figures 3 - 5 The wheel system structure includes two front wheel components. Each front wheel component includes a front wheel hub 4 and a steering knuckle structure 6. A tire is installed on the front wheel hub 4 to facilitate walking on the road surface. The steering knuckle structure 6 is used for steering the front wheel hub 4. The front wheel hub 4 is connected to the steering knuckle structure 6, and the steering knuckle structure 6 is installed on the chassis 3. The weighing sensor includes two front wheel weighing sensors 8, and the two front wheel weighing sensors 8 are arranged in one-to-one correspondence with the two front wheel components. The front wheel weighing sensor 8 is arranged on the top of the main pin shaft 61 of the steering knuckle structure 6. In this way, the front wheel weighing sensor 8 is subjected to the pressure from above, and the front wheel weighing sensor 8 can detect the tire axle load, ensuring that the tire load is within the range of ±20 kg from the design value. If it exceeds this design range, it is necessary to detect the manufacturing tolerance and assembly error of the chassis 3. Since the tires should be within the reasonable design range after the assembly of batch products, if the load of a single tire exceeds the theoretical design range, it should be checked whether the welding structure error is too large resulting in abnormal load; detecting the tire load can also prevent rollover accidents caused by uneven tire load distribution.
[0039] Furthermore, as shown in Figure 3 The steering knuckle structure 6 further includes a sleeve 62, and the main pin shaft 61 is rotatably nested in the sleeve 62. The sleeve 62 is fixed on the chassis 3, and the front wheel weighing sensor 8 is at least partially arranged in the sleeve 62 to facilitate the installation of the front wheel weighing sensor 8. Since the working principle, specific structure, and steering generated by this steering knuckle have been fully disclosed to those skilled in the art, for the purpose of simplicity of the specification, the detailed description is omitted here.
[0040] In some embodiments, in order to prevent the front wheel weighing sensor 8 and the main pin shaft 61 from being worn, gaskets 7 are arranged on the top of the front wheel weighing sensor 8 and the lower end face of the main pin shaft 61. The gasket 7 can prevent the upper and lower ends of the main pin shaft 61 from directly contacting other structures and being worn. For example, the gasket 7 is a nylon gasket.
[0041] In some embodiments, in combination with Figure 2 and Figure 4 As shown, the gear train structure further includes two rear wheel components, each rear wheel component includes a rear hub 5 and a brake, the weighing sensor includes two rear wheel weighing sensors 9, the two rear wheel components are arranged in one-to-one correspondence with the two rear wheel weighing sensors 9, and the rear wheel weighing sensors 9 are installed on the rear hub 5 or the brake. The rear wheel weighing sensor 9 is attached to the rear wheel support plate 31 of the chassis 3, so that the gravity received by the chassis 3 can be transmitted to the rear wheel weighing sensor 9 through the rear wheel support plate 31, to ensure that the rear wheel weighing sensor 9 is fixed on the chassis 3 and can detect the weight above the chassis 3. By way of example, the brake is a brake disc.
[0042] It should be noted that an adjusting piece is provided in the gap between the rear wheel weighing sensor 9 and the rear wheel support plate 31. The function of the adjusting piece is to ensure that the rear wheel weighing sensor 9 is always attached to the rear wheel support plate 31.
[0043] In some embodiments, as Figure 5 shown, the aerial work platform further includes a corner sensor 10, and the corner sensor 10 is arranged at the connection between the chassis 3 and the fork assembly, specifically at the pin shaft where the chassis 3 is connected to the fork assembly. The corner sensor 10 can obtain the rotation angle of the fork assembly and transmit the obtained rotation angle to the main controller. After receiving the gravity signal and the rotation angle respectively, the main controller analyzes and judges whether it is overloaded, so as to ensure the safety of the load object. In this embodiment, the main controller can be a centralized or distributed controller. For example, the controller can be a single microcontroller, or can be composed of multiple distributed microcontrollers. A control program can run in the microcontroller, and then control each component to realize its function.
[0044] In some embodiments, the fork assembly includes a fork body 2, and the cylinder body of the lifting cylinder is fixed to the chassis 3, and the working rod of the lifting cylinder is fixedly connected to the fork body 2. The lifting rod can open or close the fork body 2, and then realize the rise or fall of the working platform 1. By way of example, the lifting cylinder is a hydraulic cylinder or an electric cylinder to ensure the elongation or shortening of the fork body 2. The hydraulic cylinder is connected with a lifting motor. The specific structure of the fork body 2 is the prior art and will not be described in detail here.
[0045] The installation position of the weighing sensor provided by the present utility model is convenient for overhaul and maintenance. For overhaul and maintenance, only the steering knuckle structure 6 and the rear hub 5 (or the brake) need to be removed for repair, inspection and maintenance, without vehicle assistance.
[0046] Obtain the gravity signals detected by the front-wheel weighing sensor 8 and the rear-wheel weighing sensor 9, as well as the angle signal detected by the angle sensor 10. The gravity signal and the angle signal are transmitted to the main controller (such as an electric control unit). The main controller issues an instruction to the motor controller, and the motor controller issues an instruction to the lifting motor (or electric cylinder) to perform the lifting operation; when overloading operation is carried out, the gravity signals are detected by the front-wheel weighing sensor 8 and the rear-wheel weighing sensor 9, and the signals are transmitted to the electric control unit. The electric control unit calculates and analyzes whether the weight signal is overloaded. If it is overloaded, the overloading information is issued as an instruction to the motor controller, and the motor controller issues an instruction to prohibit the lifting motor (or electric cylinder) from performing the lifting operation, thereby ensuring the safety of the operator and the whole machine.
[0047] In addition, the above is only the preferred embodiment of the present invention and the applied technical principle. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments only. Without departing from the concept of the present invention, it can also include more other equivalent embodiments, and the scope of the present invention is determined by the scope of the appended claims.
Claims
1. Aerial work vehicle, characterized in that: include: A working platform (1), used for carrying a target object; A fork frame assembly is installed at the bottom of the working platform (1), and the height of the fork frame assembly is adjustable; A chassis (3) mounted on the bottom of the fork assembly; A gear train structure, mounted on the bottom of the chassis (3) to enable the chassis (3) to move; A weighing sensor is installed on the gear train structure for weighing.
2. The aerial work vehicle according to claim 1, characterized in that: The wheel train structure comprises two front wheel components, each of the front wheel components comprises a front wheel hub (4) and a steering knuckle structure (6), the front wheel hub (4) is connected to the steering knuckle structure (6), the steering knuckle structure (6) is mounted on the chassis (3), and the weighing sensor comprises two front wheel weighing sensors (8), the two front wheel weighing sensors (8) are arranged in a one-to-one correspondence with the two front wheel components, and the front wheel weighing sensor (8) is arranged at the top of the kingpin shaft (61) of the steering knuckle structure (6).
3. The aerial work vehicle according to claim 2, characterized in that: The steering knuckle structure (6) further comprises a sleeve (62), the kingpin shaft (61) being rotatably nested in the sleeve (62), and the front wheel weighing sensor (8) being at least partially disposed in the sleeve (62).
4. The aerial work vehicle according to claim 2, characterized in that: The top of the front wheel weighing sensor (8) and the lower end surface of the kingpin shaft (61) are both provided with gaskets (7).
5. The aerial work vehicle according to claim 1, characterized in that: The wheel train structure comprises two rear wheel components, each of which comprises a rear wheel hub (5) and a brake, the weighing sensor comprises two rear wheel weighing sensors (9), the two rear wheel components and the two rear wheel weighing sensors (9) are arranged in a one-to-one correspondence, and the rear wheel weighing sensors (9) are mounted on the rear wheel hub (5) or the brake and are fitted with a rear wheel support plate (31) of the chassis (3).
6. The aerial work vehicle according to claim 5, characterized in that: An adjustment sheet is provided between the rear wheel weighing sensor (9) and the rear wheel support plate (31).
7. The aerial work vehicle according to claim 1, characterized in that: The aerial work vehicle further comprises a rotation angle sensor (10), wherein the rotation angle sensor (10) is arranged at the connection between the chassis (3) and the fork frame assembly.
8. The aerial work vehicle according to claim 7, characterized in that: The rotation angle sensor (10) is a rotation angle potentiometer.
9. The aerial work vehicle according to any one of claims 1 to 8, characterized in that: The fork frame assembly comprises a fork frame body (2) and a lifting cylinder, wherein the cylinder body of the lifting cylinder is fixed to the chassis (3), and the working rod of the lifting cylinder is fixedly connected to the fork frame body (2).
10. The aerial work vehicle according to claim 9, characterized in that: The lifting cylinder is a hydraulic cylinder or an electric cylinder.