Automatic supporting leg retracting device for overhead working truck

Abstract

The utility model relates to an automatic landing leg retracting device, in particular to an automatic landing leg retracting device of an overhead working truck, which comprises a truck body, a truck head arranged at one end of the truck body, an adjusting device arranged above the truck body, an overhead working platform fixedly arranged at one end of the adjusting device, and a controller arranged on one side of the truck body. A first supporting part is arranged at one end of the controller, a second supporting part is arranged at the other end of the controller, a monitoring part is arranged on one side of the second supporting part, a first hydraulic rod drives a horizontal supporting leg to stretch out, and a horizontal supporting leg position detection limiting switch detects whether the horizontal supporting leg stretches in place and retracts to the original position or not. The second hydraulic rod drives the vertical supporting leg and the supporting chassis to stretch out and move, the ground touch detection limiting switch is triggered to detect whether the vertical supporting leg and the supporting chassis make contact with the ground or not, the horizontal sensor detects the front-back and left-right inclination angle of the vehicle body, and the controller controls the second hydraulic rod to adjust the vehicle body to be in the horizontal state. The pressure sensor detects whether the vertical supporting leg completely retracts to the original position or not.

Description

Technical Field

[0001] The utility model relates to an automatic leg outrigger and leg retractor device, in particular to an automatic leg outrigger and leg retractor device for an aerial work vehicle. Background Art

[0002] Nowadays, with the development of economy, aerial work vehicles are used more and more frequently in the field of high-altitude construction operations. Compared with traditional scaffolding-type high-altitude operations, aerial work vehicles are gradually replacing scaffolding due to their extremely high high-altitude operation safety, environmental adaptability and operation efficiency, and have become the current mainstream high-altitude operation method.

[0003] Whether it is an ordinary aerial work vehicle for civil engineering or an insulated boom aerial work vehicle for power engineering, the outrigger support work needs to be done before the operation. If the outrigger support work is not done well, it is easy to cause the risk of rollover. The original outrigger support work requires manual operation of the outrigger valve and observation by naked eye to see whether the vehicle body is level. This operation is not only troublesome, but also has low precision and wastes operation time. When the outriggers are retracted after the operation is completed, because the vehicle body is large and the line of sight is blocked, it is necessary to go back and forth to each outrigger position many times to confirm whether the outriggers are in place, which is time-consuming, labor-intensive and not smart enough. Therefore, the purpose of the utility model is to provide an automatic outrigger retracting device for aerial work vehicles. Utility Model Content

[0004] The main purpose of the utility model is to provide an automatic outrigger and leg retracting device for an aerial work vehicle to solve the problems in the related art of low outrigger support and leveling accuracy and success rate before operation, waste of operation time, and lack of intelligence in leg retraction after operation.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, there is provided an automatic leg extension and retraction device for an aerial work vehicle, comprising a vehicle body, a vehicle head is arranged at one end of the vehicle body, an adjustment device is arranged above the vehicle body, an aerial work platform is fixedly arranged at one end of the adjustment device, a controller is arranged on one side of the vehicle body, a first supporting part is arranged at one end of the controller, a second supporting part is arranged at the other end of the controller, and a monitoring part is arranged on one side of the second supporting part.

[0006] Furthermore, the first support portion and the second support portion include a first power source, one end of a piston rod of the first power source is connected to a horizontal support leg, and the first support portion and the second support portion are parallel to each other.

[0007] Furthermore, a horizontal leg position detection limit switch is fixedly provided on the outer side of one end of the first power source, and a second power source is fixedly connected to one end of the horizontal leg.

[0008] Furthermore, a vertical leg is provided at one end of the piston rod of the second power source, a supporting chassis is provided below the vertical leg, and a ground contact detection limit switch is provided above the second power source.

[0009] Furthermore, the monitoring unit includes a pressure sensor, a level sensor is arranged above the pressure sensor, and the level sensor is parallel to the upper surface of the vehicle body.

[0010] Furthermore, the output ends of the horizontal leg position detection limit switch, the ground contact detection limit switch, the level sensor and the pressure sensor are connected to the input end of the controller, and the input ends of the first power source and the second power source are connected to the output end of the controller.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the automatic outrigger and retractor device for aerial work vehicles, a first hydraulic rod is used to drive the horizontal outrigger to extend, a horizontal outrigger position detection limit switch is used to detect whether the horizontal outrigger is fully extended and retracted to the original position, a second hydraulic rod is used to drive the vertical outrigger and the supporting chassis to extend and move, a trigger touchdown detection limit switch is used to detect whether the vertical outrigger supporting chassis touches the ground, a horizontal sensor is used to detect the front, back, left, and right tilt angles of the vehicle body, a controller is used to control the second hydraulic rod to adjust the vehicle body to a horizontal state, and a pressure sensor is used to detect whether the vertical outrigger is completely retracted to the original position. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the preferred embodiment of the utility model;

[0014] Figure 2 It is a schematic structural diagram of the supporting legs in the preferred embodiment of the utility model.

[0015] Illustrations: 1. Vehicle body; 2. Horizontal outrigger; 3. Vertical outrigger; 4. First hydraulic rod; 5. Second hydraulic rod; 6. Horizontal outrigger position detection limit switch; 7. Ground contact detection limit switch; 8. Horizontal sensor; 9. Pressure sensor; 10. Controller. DETAILED DESCRIPTION

[0016] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0017] See also Figure 1-Figure 2As shown, the purpose of this embodiment is to make the aerial work vehicle better suitable for the ground with different slopes, better leveling, and more intelligent leg retraction. In view of this, an automatic leg retraction device for an aerial work vehicle is provided, including a body 1, a head is provided at one end of the body 1, an adjustment device is provided above the body 1, an aerial work platform is fixedly provided at one end of the adjustment device, a controller 10 is provided on one side of the body 1, a first support part is provided at one end of the controller 10, a second support part is provided at the other end of the controller 10, and a monitoring part is provided on one side of the second support part. The head provided at one end of the body 1 is used to drive the aerial work vehicle to a suitable working position, the adjustment device above the body 1 includes a rotating base and a telescopic support rod, and an aerial work platform is fixed at one end of the telescopic support rod, so that the aerial work platform is always in a horizontal position, and the controller 10 is used to receive the signal of the monitoring part and then adjust the first support part and the second support part, so as to better support the body 1, so that the body 1 is in a horizontal state more stable, so that the operator can better work on the aerial work platform.

[0018] The first support part and the second support part include a first power source, one end of the piston rod of the first power source is connected to the horizontal support leg 2, and the first support part and the second support part are parallel to each other. Both the first support part and the second support part include a retractable support leg, one end of the piston rod of the first power source is hinged to the horizontal support leg 2, and the first power source in this embodiment preferably adopts a first hydraulic rod 4, one end of the piston rod of the first hydraulic rod 4 moves left and right to drive the horizontal support leg 2 to move left and right, and the side wall of the first hydraulic rod 4 on one side of the vehicle body 1 is parallel and fixedly connected to the side wall of the first hydraulic rod 4 on the other side of the vehicle body 1, so that the horizontal support legs 2 on both sides are parallel to each other, thereby providing horizontal leveling support for the vehicle body 1.

[0019] A horizontal leg position detection limit switch 6 is fixedly arranged on the outer side of one end of the first power source, and a second power source is fixedly connected to one end of the horizontal leg 2. The horizontal leg position detection limit switch 6 on the outer wall of the first hydraulic rod 4 is used to detect whether the horizontal leg 2 is extended to a specified position length, and then start the second power source. The second power source in this embodiment preferably adopts the second hydraulic rod 5.

[0020] A vertical leg 3 is provided at one end of the piston rod of the second power source, a supporting chassis is provided below the vertical leg 3, and a ground contact detection limit switch 7 is provided above the second power source. One end of the piston rod of the second hydraulic rod 5 is hingedly fixed to the vertical leg 3, the supporting chassis below the vertical leg 3 is used to prevent the vertical leg 3 from being worn due to long-term contact, the supporting chassis is bolted to the vertical leg 3 for easy replacement, and the ground contact detection limit switch 7 above the outer wall of the second hydraulic rod 5 is used to detect whether the vertical leg 3 and the supporting chassis are in contact with the ground, so as to perform the next step of operation.

[0021] The monitoring unit includes a pressure sensor 9, and a horizontal sensor 8 is arranged above the pressure sensor 9, and the horizontal sensor 8 is parallel to the upper surface of the vehicle body 1. The pressure sensor 9 is used to detect the pressure on the vehicle body 1. When the vertical legs 3 are retracted back to the original state, the support force of the vertical legs 3 on the adjustment device and the aerial work platform is removed, and the gravity of the adjustment device and the aerial work platform will all be pressed on the vehicle body 1. The pressure sensor 9 is triggered to receive a signal, and the horizontal legs 2 can continue to be retracted back to the original state. The horizontal sensor 8 is used to detect whether the vehicle body 1 is in a horizontal state.

[0022] The output ends of the horizontal outrigger position detection limit switch 6, the ground detection limit switch 7, the level sensor 8 and the pressure sensor 9 are connected to the input end of the controller 10, and the input ends of the first power source and the second power source are connected to the output end of the controller 10. The signals detected by the horizontal outrigger position detection limit switch 6, the ground detection limit switch 7, the level sensor 8 and the pressure sensor 9 are transmitted to the controller 10 to transmit the adjustment signal to the first hydraulic rod 4 and the second hydraulic rod 5 to drive the horizontal outrigger 2 and the vertical outrigger 3 to adjust and move.

[0023] When the utility model is used in practice, the controller 10 is first controlled to start the first hydraulic rod 4 on the vehicle body 1, and the piston rod of the first hydraulic rod 4 drives the horizontal leg 2 to extend. When the horizontal leg 2 is extended to the specified position, the horizontal leg position detection limit switch 6 is triggered. When the piston rod of the first hydraulic rod 4 stops moving, the second hydraulic rod 5 is started, and the piston rod of the second hydraulic rod 5 drives the vertical leg 3 to extend and move. When the vertical leg 3 and the supporting chassis touch the ground, the ground contact detection limit switch 7 is triggered, and the piston rod of the second hydraulic rod 5 stops moving. Then the vehicle body 1 starts to be leveled, and the horizontal sensor 8 detects that the vehicle body 1 The front, rear, left and right tilt angles transmit signals to the controller 10, and the controller 10 transmits the adjustment signal to the second hydraulic rod 5, adjusts the vertical legs 3 at different positions to the appropriate length, and makes the vehicle body 1 in a horizontal state. After completing the operation, the piston rod of the second hydraulic rod 5 is started to drive the vertical legs 3 to retract. When the vertical legs 3 return to the original position, the pressure sensor 9 is triggered, and then the piston rod of the first hydraulic rod 4 is started to drive the horizontal legs 2 to retract. When the horizontal legs 2 retract to the original position, the horizontal leg position detection limit switch 6 is triggered to stop retracting, thereby completing the telescopic support detection operation of the first support part, the second support part and the monitoring part.

[0024] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An automatic leg extension and retraction device for an aerial work vehicle, comprising a vehicle body (1), characterized in that: A vehicle head is arranged at one end of the vehicle body (1), an adjustment device is arranged above the vehicle body (1), an aerial work platform is fixedly arranged at one end of the adjustment device, a controller (10) is arranged on one side of the vehicle body (1), a first support portion is arranged at one end of the controller (10), a second support portion is arranged at the other end of the controller (10), and a monitoring portion is arranged on one side of the second support portion.

2. The automatic leg extension and retraction device for aerial work vehicles according to claim 1 is characterized in that: The first support part and the second support part comprise a first power source, one end of a piston rod of the first power source is connected to a horizontal support leg (2), and the first support part and the second support part are parallel to each other.

3. The automatic leg extension and retraction device for aerial work vehicles according to claim 2 is characterized in that: A horizontal leg position detection limit switch (6) is fixedly arranged on the outer side of one end of the first power source, and one end of the horizontal leg (2) is fixedly connected to a second power source.

4. The automatic leg extension and retraction device for aerial work vehicles according to claim 3 is characterized in that: A vertical support leg (3) is provided at one end of the piston rod of the second power source, a supporting chassis is provided below the vertical support leg (3), and a ground contact detection limit switch (7) is provided above the second power source.

5. The automatic leg extension and retraction device for aerial work vehicles according to claim 4 is characterized in that: The monitoring unit comprises a pressure sensor (9), a level sensor (8) is arranged above the pressure sensor (9), and the level sensor (8) is parallel to the upper surface of the vehicle body (1).

6. The automatic leg extension and retraction device for aerial work vehicles according to claim 5, characterized in that: The output ends of the horizontal leg position detection limit switch (6), the ground contact detection limit switch (7), the level sensor (8) and the pressure sensor (9) are connected to the input end of the controller (10), and the input ends of the first power source and the second power source are connected to the output end of the controller (10).

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