[0029] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:
[0030] The invention discloses an aerial work platform arranged on the boom of a truck crane. The aerial working platform is arranged on the lifting lugs at the top of the boom of the truck crane. Based on the existing truck crane, the truck crane has the high-altitude working platform. effect.
[0031] The aerial work platform of the present invention is set on the lifting lugs 4-1 at the top of the boom 4 of a truck crane. The aerial work platform includes a work platform 1 with a guardrail 2. The work platform 1 is generally rectangular steel plate, and the specific size is selected according to needs , The length is generally 1.6 to 2.0m, and the width is generally 1.0 to 1.4m. A guardrail 2 is provided on the work platform 1 to ensure the safety of the staff. The guardrail also has the function of connecting a safety rope. The specific structure is as figure 1 , figure 2 Shown.
[0032] The work platform 1 in the present invention is connected to the rotating table 3 through the supporting rod 5 and the connecting rod 7. Specifically, one end of the supporting rod 5 is hingedly connected to the rotating table 3, and the other end of the supporting rod 5 is hinged to the connecting rod 7 ; Then the connecting rod 7 is fixedly connected with the work platform. This can ensure that the working platform 1 is always in a horizontal state, and provide a comfortable working environment for the staff. In a specific implementation, two connecting rods 7 are provided to ensure the stability of the work platform. The support rod 5 and the connecting rod 7 are both configured as hydraulic telescopic rods, which connect the hydraulic telescopic rod with the hydraulic system of the crane. Controlled by the hydraulic system of the crane.
[0033] In the present invention, a driving cylinder 6 hinged to the support rod 5 is provided to drive the rotation in a small range. One end of the driving cylinder 6 is hinged with the lifting lug 4-1, and the other end is hinged with the support rod 5. Specifically, an ear seat is provided on the support rod 5 to be hinged with the driving cylinder 6. The specific structure is as image 3 , Figure 4 Shown. In this embodiment, the fixed section of the drive cylinder 6 is hinged with the lifting lug 4-1, and the telescopic section of the drive cylinder 6 is hinged with the support rod 5. When the telescopic section of the driving cylinder 6 is extended, the support rod 5 drives the work platform 1 to rise. When the telescopic section of the driving cylinder 6 is recovered, the support rod 5 drives the work platform 1 to descend. Thus, the position of the working platform can be adjusted conveniently. In a specific real-time process, the hinge point between the driving cylinder 6 and the support rod 5 is as close as possible to one end of the rotating table 3. Preferably, the distance between the hinge point of the drive cylinder 6 and the support rod 5 and the hinge point of the support rod 5 and the rotating table 3 accounts for 1/6 to 1/4 of the length of the support rod 5. This arrangement can ensure that the drive cylinder can be controlled to rotate around the hinge axis with a small amount of expansion and contraction.
[0034] In the present invention, a rotatable rotating platform is provided, and the rotating platform 3 can drive the work platform to rotate around an axis. There are two specific implementation methods. One is to maintain a solid connection between the rotating table 3 and the lifting lug 4-1 and use a hydraulic motor to drive. The hydraulic motor is connected to the hydraulic system of the crane. The transmission of the hydraulic motor is smooth and easy to achieve reciprocating motion. It can ensure the stability of the rotating table 3 during the movement. The other is to use a rack and pinion mechanism to drive the rotating table to rotate. The specific structure is as follows Figure 5 Shown. The rotating table 3 in this manner includes a rectangular seat plate 3-1 and a driving gear 3-2 fixedly arranged on the lower end surface of the rectangular seat plate 3-1. The drive gear 3-2 meshes with the rack 9. The rack 9 is fixed on the telescopic end of the hydraulic cylinder 8 and is driven by the hydraulic cylinder 8 to move linearly. When the rack 9 moves linearly, it drives the driving gear 3-2 meshed with it to rotate, and the rotating table 3 drives the work platform to rotate. The hydraulic cylinder 8 is fixed on the lifting lug 4-1. The number of teeth of the rack 9 is greater than the number of teeth of the drive gear 3-2 to ensure the safety of the rack and pinion mechanism in operation. The specific number of teeth of the rack 9 is 2-8 teeth more than the number of teeth of the drive gear 3-2. When using a rack and pinion transmission mechanism, the linear motion is turned into a rotary motion. The use of hydraulic cylinders can reduce the cost of parts. The hydraulic cylinders are more durable and have a low failure rate. In the specific implementation process, it is more necessary to choose a hydraulic motor or a rack and pinion structure to achieve the rotation of the rotating table.
[0035] The components driven by the hydraulic system in the present invention are all connected with the hydraulic system of the crane. Using the hydraulic system of the crane to control the aerial work platform can simplify the structure of the device as a whole. The invention also provides a remote control for controlling the aerial work platform, and the remote control is wirelessly connected with the hydraulic control system of the aerial work platform. This arrangement enables the construction personnel on the aerial work platform to also adjust the position of the aerial work platform. Because the construction personnel on the aerial work platform can adjust the spatial position of the aerial work platform more conveniently and accurately.
[0036] The present invention also includes a video monitoring system, which includes a camera set on the work platform 1 and a display screen set in the control room. The camera can transmit real-time information on the work platform to the display screen in the operating room for the operator to adjust the position of the work platform. The information transmission between the camera and the display screen is carried out wirelessly, and the wireless information transmission module can be installed in both the camera and the display screen. The video monitoring system also includes voice communication equipment, which can be a wireless headset or walkie-talkie, which can facilitate communication between the staff on the work platform and the operators in the cab. This setting can improve the safety of high-altitude operations and at the same time improve work efficiency.
[0037] In the present invention, by setting the drive cylinder to control the rotation of the support rod, the aerial work platform can be fine-tuned in the front and rear directions without controlling the boom, and it works with the connecting rod and the rotating table to realize the aerial work platform at any position in space. Adjustment makes the adjustment of the aerial work platform more convenient.
[0038] In the present invention, the rotating table is driven by a hydraulic motor and can be rotated, and can also be driven by a rack and pinion mechanism. The aerial working platform can be adjusted in the circumferential direction without controlling the boom, so that the aerial working platform is more convenient to use . The rotary table in the present invention uses a hydraulic system to control rotation, which can make the overall structure of the device simple. The use of a hydraulic system can make the adjustment of the aerial work platform more stable, thereby ensuring the safety of construction personnel.
[0039] On the basis of the existing truck crane, the invention is equipped with an aerial work platform, so that the truck crane can take people to carry out high-altitude operations, enriches the functions of the truck crane, reduces the number of large vehicles on the project site, and also improves the work efficiency. The comprehensive use performance of the present invention is good.
