CN104477775A - A telescopic lifting hook drift angle detection device - Google Patents

Abstract

The invention belongs to a detection device, in particular to a telescopic hook deflection detection device. Including the support seat, the support seat is fixedly installed on the bottom plate of the trolley, the lower end of the support seat passes through the x-direction rotating shaft, the x-direction rotating shaft is fixedly connected with the x-axis encoder, the encoder coupling is fixed on the x-direction rotating shaft, and the y-direction rotates The shaft passes through the encoder coupling, the y-axis is fixedly connected to the y-axis encoder and the counterweight, the positioning steel rope passes through the hollow telescopic positioning rod, the y-direction rotating shaft is connected to the telescopic positioning rod, and the telescopic positioning rod is connected to the telescopic positioning rod. Rod, telescopic positioning rod are connected telescopic positioning rod, and telescopic positioning rod, steel wire rope are all connected with hook head movable pulley. The advantage is that the angle positioning of the telescopic positioning rod and the positioning steel rope in the lifting process and the swinging process of the hook can be realized by using a simple mechanical principle, and the utility model has the advantages of simple structure, flexible movement, free lifting, safety and reliability.

Description

Telescopic hook deflection angle detection device

technical field

The invention belongs to a detection device, in particular to a detection device applied to the detection of the deflection angle of hooks of various types of cranes or the detection device of the motion deflection angle of pendulum objects in space. It can realize the measurement of the object's swing angle and angular velocity on the two projection planes of xoz and yoz for the suspended pendulum object in space. the

Background technique

Most of the current lifting equipment is operated by specialized personnel with special occupational qualification certificates. In order to improve the degree of automation of lifting equipment, improve production efficiency, and liberate labor, future cranes can be automatically controlled by computers. In the process of realizing automatic control, the detection of hook swing angle and angular velocity is a necessary link. the

Contents of the invention

The object of the present invention is to provide a telescopic hook deflection angle detection device, which has simple structure, low manufacturing cost, high reliability, high inspection accuracy and good practicability. the

The present invention is achieved in this way. The retractable hook deflection angle detection device includes a support seat, which is fixedly installed on the bottom plate of the trolley. The lower end of the support seat passes through the x-direction rotation shaft, and the x-direction rotation shaft is fixedly connected with an x-axis encoder. , the encoder coupling is fixed on the x-direction rotation axis, the y-direction rotation axis passes through the encoder coupling, the y-axis encoder and the counterweight are fixedly connected to the y-direction rotation shaft, the positioning steel rope passes through the hollow telescopic positioning rod, The y-direction rotating shaft is connected with telescopic positioning rod, and telescopic positioning rod connects telescopic positioning rod, and telescopic positioning rod connects telescopic positioning rod, and telescopic positioning rod, steel wire rope are all connected with hook head movable pulley. the

Described pulley connects hook head. the

The advantages of the present invention are that the angle positioning of the telescopic positioning rod and the positioning steel rope during the lifting process and the swinging process of the hook can be realized by using a simple mechanical principle, and its structure is simple, flexible in movement, free in lifting, safe and reliable. In terms of angle detection, two encoders at a right angle of 90 degrees to each other are cleverly used to detect the swing angle and angular velocity of objects on the two projection planes of xoz and yoz. the

Description of drawings

Figure 1 shows the detection of the swing angle and angular velocity of the suspended pendulum object on the two projection planes xoz and yoz. the

Fig. 2 is the structural diagram of telescopic hook deflection detection device provided by the present invention;

Fig. 3 is a left side view of Fig. 2 . the

In the figure: 1 support base; 2 trolley bottom plate; 3x direction rotation shaft; 4 steel wire rope; 5y axis encoder; 6x axis encoder; 7 counterweight; 8y direction transmission shaft; 9 positioning steel rope; Telescopic positioning rod, 12 telescopic positioning rod; 13 hook head movable pulley; 14 hook head; 15 encoder coupling piece. the

Detailed ways

The present invention is described in detail below in conjunction with accompanying drawing and embodiment:

As shown in Figures 2 and 3, the retractable hook deflection detection device includes a support base 1, which is fixedly installed on the trolley floor 2, and the lower end of the support base 1 passes through the x-direction rotation shaft 3, which is fixed on the x-direction rotation shaft 3 The x-axis encoder 6 is connected, and the encoder coupling 15 is fixed on the rotating shaft 3 in the x direction. The transmission shaft 8 in the y direction passes through the encoder coupling 15, and the y-axis encoder 5 and the transmission shaft 8 in the y direction are fixedly connected The counterweight 7, the positioning steel rope 9 pass through the hollow telescopic positioning rod 10, the telescopic positioning rod 11 and the telescopic positioning rod 12, the transmission shaft 8 in the y direction is connected with the telescopic positioning rod 10, and the telescopic positioning rod 10 is connected with the telescopic positioning rod 11, the telescopic positioning rod 10, and the telescopic positioning rod 10. Positioning bar 11 connects telescopic positioning bar 12, and telescopic positioning bar 12, steel wire rope 4 are all connected with hook head movable pulley 13, and pulley 13 connects hook head 14. the

1. Hook swing detection method: It is mainly realized by two encoders installed at 90 degrees to each other. the

2. Locate the steel rope and multi-section telescopic positioning rod during the lifting and lowering of the hook. the

The present invention is as shown in accompanying drawing 2. Due to the hook of the crane or the swing of the suspended object in space, it may be in any direction. In order to detect the deflection angle and angular velocity of the crane hook or the swinging object, the actual swinging angle of the object can be decomposed on the two projection planes of xoz and yoz according to Figure 1 . The projection angle obtained by decomposition is the required angle to be detected. the

In order to achieve the above-mentioned detection purpose, the present invention adopts a mature incremental encoder as a detection device. Incremental encoder is a device that converts the angular displacement generated by the rotating shaft into a periodic electrical signal, and then converts this electrical signal into counting pulses, and uses the number of pulses to represent the magnitude of the displacement. By installing two incremental encoders at 90 degrees, as shown in Figure 2, the purpose of detecting the angle and declination velocity on the two projection planes of xoz and yoz when the hook or pendulum moves can be achieved . the

Due to the lack of rigidity of the actual crane hook wire rope, multi-section telescopic positioning rods and positioning wire ropes are added to the design of the detection device. Their function is to ensure that the hook has sufficient rigidity when it swings at any height, so as to accurately detect the deflection angle and deflection speed of the hook when it swings. When the crane lifts heavy objects, the hook head of the pulley makes a corresponding lifting movement, and the hook head pushes the telescopic rod to move upward. When the crane lowers the heavy object, the telescopic rod is lowered section by section under the action of gravity. At the same time, the positioning steel rope performs corresponding lifting and lowering movements according to a certain transmission ratio. the

Claims (2)

1. telescopic suspension hook deviation angle detection device, it is characterized in that: comprise supporting seat (1), supporting seat (1) is fixedly mounted on cart base plate (2), supporting seat (1) lower end is by x direction turning cylinder (3), x direction turning cylinder (3) is fixedly connected with x-axis coder (6), coder joint piece (15) is fixed on turning cylinder (1), y direction turning cylinder (8) is connected by coder joint piece (15), y direction turning cylinder (8) is connected with y-axis coder (5) and clump weight (7), location steel cable (9) is through hollow Telescopic positioning lever (10), Telescopic positioning lever (11) and Telescopic positioning lever (12), y direction turning cylinder (8) is connected with Telescopic positioning lever (10), Telescopic positioning lever (10) connects Telescopic positioning lever (11), Telescopic positioning lever (11) connects Telescopic positioning lever (12), Telescopic positioning lever (12), steel rope (4) is all connected with gib head movable pulley (13).

2. telescopic suspension hook deviation angle detection device as claimed in claim 1, is characterized in that: described pulley (13) connects gib head (14).