Intelligent jacking structure position maintaining device for tower crane

Abstract

The utility model relates to tower crane technical field, and is used to solve the problem that the overall stability of tower crane is influenced because the tail end of crossbeam is raised when the gravity center changes when the hanging shoe is moved out from the U type groove of standard section ladder, the crossbeam is relatively heavy because of the hanging shoe on the top, the intelligent jacking structure position keeping device of tower crane includes jacking crossbeam, sliding block, angle sensor and drive mechanism, the sliding block, angle sensor and drive mechanism all are located on jacking crossbeam, and the sliding block is movably connected with jacking crossbeam, the angle sensor is used to detect the inclination of jacking crossbeam, when the angle sensor detects abnormal inclination, the drive mechanism drives the sliding block to move relative to jacking crossbeam, the utility model adjusts the relative position of sliding block on jacking crossbeam through drive mechanism, and then changes the gravity center of jacking crossbeam, and then prevents the tail end of jacking crossbeam from being raised due to gravity, thereby guaranteeing the stability of tower crane.

Description

Technical Field

[0001] This utility model relates to the field of tower crane technology, specifically to a smart jacking structure position holding device for tower cranes. Background Technology

[0002] When a tower crane (referred to as a tower crane) is lifting or removing standard sections, the hanging shoes on the crossbeam are relatively heavy. When the lifting cylinder and the positioning and disengagement cylinder control the hanging shoes to move out of the U-shaped groove of the standard section step, the center of gravity changes, and the tail end of the crossbeam will tilt up, thus affecting the overall stability of the tower crane and increasing the risk during lifting. Utility Model Content

[0003] The purpose of this utility model is to provide a smart jacking structure position holding device for tower cranes, which solves the problem that the center of gravity changes when the hanging shoe on the crossbeam moves out of the standard section step U-shaped groove, causing the tail end of the crossbeam to tilt up and thus affecting the overall stability of the tower crane.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a tower crane intelligent jacking structure position holding device, including a jacking beam, a slider, an angle sensor and a drive mechanism. The slider, the angle sensor and the drive mechanism are all located on the jacking beam, and the slider is movably connected to the jacking beam. The angle sensor is used to detect the tilt angle of the jacking beam. When the angle sensor detects an abnormal tilt angle, the drive mechanism drives the slider to move relative to the jacking beam.

[0005] Furthermore, a slide rail is fixed on the lifting beam, and the slider is slidably connected to the slide rail.

[0006] Furthermore, the slide rails are two parallel rails arranged side by side, and each slide rail has a slider.

[0007] Furthermore, the two sliders are fixedly connected together by a rigid connector.

[0008] Furthermore, the drive mechanism includes a motor, a gear, and a rack. The motor is fixed on the lifting beam, the gear is fixed at the output end of the motor, and the rack is fixedly connected to a rigid connecting member and meshes with the gear.

[0009] Furthermore, the drive mechanism includes a motor and a lead screw. The motor is fixed on the lifting beam, and the lead screw is rotatably mounted on the lifting beam with one end fixedly connected to the output end of the motor. The rigid connector has a threaded hole, and the lead screw passes through the threaded hole to form a lead screw-nut pair with the rigid connector.

[0010] The beneficial effects of this utility model are: by adjusting the relative position of the slider on the lifting beam through the drive mechanism, the center of gravity of the lifting beam is changed, thereby preventing the tail end of the lifting beam from tilting due to gravity, thus ensuring the stability of the tower crane. Attached Figure Description

[0011] Figure 1 This is a side view of the present invention on the lifting beam; Figure 2 This is a front view of the present invention on the lifting beam; In the diagram: 1. Lifting cylinder, 2. Motor, 3. Slider, 4. Lifting beam, 5. Rigid connecting rod, 6. Rack, 7. Slide rail, 8. Gear. Detailed Implementation

[0012] like Figure 1 and Figure 2 As shown, the intelligent jacking structure position holding device for tower cranes of this utility model includes a jacking beam 4, a slider 3, and a drive mechanism. The slider 3 is movably mounted on the jacking beam 4. The drive mechanism changes the position of the slider 3 on the jacking beam 4, thereby adjusting the center of gravity of the jacking beam 4. The slider 3 acts as a counterweight. The structure, working principle, and usage of this utility model will be described in detail below with reference to the accompanying drawings.

[0013] like Figure 1 , Figure 2 As shown, the intelligent jacking structure position holding device for a tower crane includes a jacking beam 4, a slider 3, and a drive mechanism. A jacking cylinder 1 is installed above the jacking beam 4, and the piston rod of the jacking cylinder 1 is hinged to the jacking beam 4. When the jacking cylinder 1 is activated, it drives the jacking beam 4 to move up and down. Both the slider 3 and the drive mechanism are located on the jacking beam 4, and the slider 3 is movably connected to the jacking beam 4. The drive mechanism is used to drive the slider 3 to move up and down relative to the jacking beam 4.

[0014] Specifically, to achieve the movable connection between the slider 3 and the lifting beam 4, a slide rail 7 is fixed on the lifting beam 4, and the slider 3 is slidably connected to the slide rail 7. To limit the movement of the slider 3, it can be embedded inside the slide rail 7. To ensure the stability of the entire lifting beam 4, there are two slide rails 7 arranged parallel to each other on the left and right, and the two slide rails 7 are symmetrically arranged on the lifting beam 4. Each slide rail 7 has a slider 3, and the two sliders 3 are exactly the same in shape and weight. To connect the two sliders 3 together, they are fixedly connected by a rigid connector 5. The left end of the rigid connector 5 is welded and fixed to the left slider 3, and the right end of the rigid connector 5 is welded and fixed to the right slider 3.

[0015] This utility model provides two types of drive mechanisms, both of which can realize the function of driving the slider 3 to move on the slide rail 7. For example... Figure 2As shown, the drive mechanism of Embodiment 1 includes a motor 2, a gear 8, and a rack 6. The motor 2 is fixed to the lifting beam 4, the gear 8 is fixed to the output end of the motor 2, and the rack 6 is fixedly connected to the rigid connecting member 5 and meshes with the gear 8. After the motor 2 is started, the gear 8 rotates, thereby driving the rack 6 to move, which in turn drives the rigid connecting member 5 to move, and in turn drives the slider 3 to move. In addition to being fixedly connected to the rigid connecting member 5, the rack 6 can also be slidably connected to the lifting beam 4.

[0016] In a second embodiment of the drive mechanism, the drive mechanism includes a motor 2 and a lead screw. The motor 2 is fixed on the lifting beam 4, and the lead screw is rotatably mounted on the lifting beam 4 with one end fixedly connected to the output end of the motor 2. The rigid connecting member 5 has a threaded hole, through which the lead screw passes to form a lead screw-nut pair with the rigid connecting member 5. After the motor 2 is started, the lead screw rotates, thereby driving the rigid connecting member 5 and the slider 3 to move.

[0017] To detect the tilt angle of the lifting beam 4 in order to drive the motor 2, an angle sensor is installed on the lifting beam 4. The angle sensor detects the tilt angle of the lifting beam 4. When the angle sensor detects abnormal tilt angle data of the lifting beam 4, the control system sends a signal to the motor 2, causing the motor 2 to actuate. This, in turn, drives the slider 3 downward through the drive mechanism, changing the center of gravity of the lifting beam 4 and preventing the tail end of the lifting beam 4 from tilting up. The control system can be a PLC controller, which is signal-connected to both the angle sensor and the motor 2. PLC controllers are existing technology and will not be described in detail here.

[0018] The working principle of this utility model is described below: After the tower crane frame is lifted, the brake shoe is fixed, and the hanging shoe moves out of the U-shaped groove of the step under the combined action of the lifting cylinder 1 and the positioning and disengagement cylinder. After the hanging shoe moves out of the U-shaped groove, due to the hanging shoe on the lifting beam 4, the weight on the lifting beam 4 is relatively large, and the lower part of the lifting beam 4 tilts up due to the shift in the center of gravity. After the angle sensor detects the change in the angle of the lifting beam 4, the control system controls the motor 2 to run, and the drive mechanism transmits power to the slider 3, causing the slider 3 to move down, thereby controlling the lifting beam 4 to remain stable. When the lifting beam 4 is stable, the motor 2 stops operating.

[0019] The following describes how to use this utility model: (1) After the tower crane's jacking operation is completed, first ensure that the brake shoe is in place. Through the coordinated operation of the jacking cylinder 1 and the positioning and disengagement cylinder, the brake shoe moves outward from inside the U-shaped groove. During this process, the jacking cylinder 1 and the positioning and disengagement cylinder, according to the preset control program and hydraulic power system, make the brake shoe smoothly and accurately disengage from the U-shaped groove.

[0020] (2) After the hanging shoe is successfully removed from the U-shaped groove, the weight borne by the upper part of the lifting beam 4 is relatively large due to the hanging shoe and related devices installed on it. Based on the principle of the distribution of the center of gravity of an object, the lower part of the lifting beam 4 will tilt due to the shift of the center of gravity under the action of gravity. This tilting action can be monitored and data collected in real time by angle sensors that are set in key parts in advance, so as to provide accurate data for subsequent adjustment of the center of gravity balance.

[0021] (3) When the angle of the lifting beam 4 changes due to the change in center of gravity, the angle sensor can detect the change in angle and transmit this angle change signal to the control system. After receiving the signal, the control system immediately starts the motor 2. The motor 2 drives the slider 3 to move downward along the slide rail 7 through the drive mechanism. During the movement, the slider 3 changes its position distribution on the lifting beam 4, effectively adjusting the center of gravity of the lifting beam 4, so that the lifting beam 4 returns to a balanced and stable state, ensuring the safety and reliability of the entire tower crane lifting structure in the subsequent operation. Through the coordinated work of the above devices, it can adapt to the needs of center of gravity changes under different working conditions and has an automatic adjustment function to maintain the long-term stable operation of the system.

[0022] This invention adjusts the relative position of the slider 3 on the lifting beam 4 through a drive mechanism, thereby changing the center of gravity of the lifting beam 4 and preventing the tail end of the lifting beam 4 from tilting up under the action of gravity, thus ensuring the stability of the tower crane.

Claims

1. A tower crane intelligent jacking structure position holding device, characterized in that, It includes a lifting beam, a slider, an angle sensor, and a drive mechanism. The slider, angle sensor, and drive mechanism are all located on the lifting beam, and the slider is movably connected to the lifting beam. The angle sensor is used to detect the tilt angle of the lifting beam. When the angle sensor detects an abnormal tilt angle, the drive mechanism drives the slider to move relative to the lifting beam.

2. The intelligent jacking structure position holding device for tower cranes according to claim 1, characterized in that, A slide rail is fixed on the lifting beam, and the slider is slidably connected to the slide rail.

3. The intelligent jacking structure position holding device for tower cranes according to claim 2, characterized in that, The slide rail consists of two parallel rails, each with a slider.

4. The intelligent jacking structure position holding device for tower cranes according to claim 3, characterized in that, The two sliders are fixedly connected together by a rigid connector.

5. The intelligent jacking structure position holding device for tower cranes according to claim 4, characterized in that, The drive mechanism includes a motor, a gear, and a rack. The motor is fixed on the lifting beam, the gear is fixed at the output end of the motor, and the rack is fixedly connected to a rigid connecting member and meshes with the gear.

6. The intelligent jacking structure position holding device for tower cranes according to claim 4, characterized in that, The drive mechanism includes a motor and a lead screw. The motor is fixed on the lifting beam, and the lead screw is rotatably mounted on the lifting beam with one end fixedly connected to the output end of the motor. The rigid connector has a threaded hole, and the lead screw passes through the threaded hole to form a lead screw and nut pair with the rigid connector.

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