CN204454136U - A kind of rotary type falling proof device of lifting means - Google Patents

Abstract

The utility model relates to a rotating anti-falling device for lifting equipment, which comprises a slotted column, a hook, a roller, a pull rope, a fixed seat, a fixed plate and a rotating rod, and the slotted column is fixed on both sides of the object to be lifted In the track, a fixed frame is fixed in the center of the top of the object to be lifted. The hook runs through the top of the fixed frame, and the upper end of the hook is connected with the lifting rope. The lower end of the hook is fixed with a pulley, and the upper end of the pulley on the hook is also provided with a limit The two rollers are fixed on the top of the object to be lifted at intervals through the bracket, and the two rollers are located inside the fixed frame, the two fixed plates are respectively fixed on the two ends of the top of the object to be lifted, and the rotating rod is connected to the fixed object through the rotating shaft. On the board, two fixed seats are installed on the inner side of the fixed plate respectively, the fixed seats are connected with the upper end of the rotating rod through a spring, the pull rope goes around the two rollers and pulleys, and passes through the fixed frame and the fixed seat to connect the two rotating rods. Lower connection. The utility model has simple and effective structure and low cost.

Description

Rotary fall prevention device for hoisting equipment

technical field

The utility model belongs to the field of petroleum machinery or vertical lifting elevators, in particular to a rotating anti-falling device for lifting equipment.

Background technique

At present, lifting ropes (wire ropes or steel belts) are required to lift heavy objects (counterweights or car lifts) in oil extraction equipment, especially pumping units with vertical movement of counterweights, and elevators with car vertical lifts. car), because the lifting rope is a vulnerable part, long-term repeated bending and winding actions are likely to cause rupture or even breakage. At the same time, it is necessary to fix the counterweight or the car at a certain position during maintenance. In the prior art, the commonly used handling methods include: using a support body to lift the heavy object, and using a long rod to lock the heavy object on the equipment. Although the risk of falling is solved to a certain extent, it cannot be released by itself. Manually remove the support body or long pole.

Safety gear is often used in elevators to brake in emergency situations, and when the safety gear acts, it often causes certain physical damage to the elevator guide rails and the elevator car. Therefore, it is impossible to use the action of the safety gear to move the elevator car The box is fixed in a certain position. The bolt-type anti-fall device restricts the degree of freedom of the car in the vertical direction through the bolt so that it can maintain a suspended state. However, the degree of freedom of the bolt in the horizontal direction is not restricted, so that it is still not stable enough in the working state. Once the bolt slips out of the lock hole, a serious accident will occur.

Contents of the invention

In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a rotating anti-falling device for lifting equipment, which can quickly fix heavy objects (counterweight or car) when the "lifting rope" breaks, and avoid accidents. Heavy objects fall causing casualties and property damage.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

A rotary fall prevention device for lifting equipment, comprising a slotted column, a hook, a roller, a pull cord, a fixed seat, a fixed plate and a rotating rod, and the slotted column is fixed in the lifting rails on both sides of the object to be lifted , the top center of the object to be lifted is fixed with a fixed frame, the hook runs through the top of the fixed frame, and the upper end of the hook is connected with the hoisting rope, the lower end of the hook is fixed with a pulley, and the upper end of the pulley on the hook is There is also a limit plate, and the two rollers are fixed on the top of the object to be lifted at intervals through the bracket, and the two rollers are located inside the fixed frame, and the two fixed plates are respectively fixed on the two ends of the top of the object to be lifted. It is connected to the fixed plate through the rotation of the rotating shaft, and the two fixed seats are respectively installed on the inner side of the fixed plate. The fixed seats are connected with the upper end of the rotating rod through a spring. The frame and the fixed seat connect the lower ends of the two rotating rods.

As a preferred solution: the upper ends on both sides of the limiting plate are respectively fixed with buffer springs. When heavy objects or other components suddenly exert force on the lifting rope, the buffer spring is used to effectively buffer the limit plate and the fixed frame, so as to avoid the phenomenon of broken rope as much as possible.

As a preferred solution: the end of the top of the fixing seat close to the fixing plate is also provided with a buffer elastic piece. The buffer shrapnel can reduce the impact force of the rotating rod on the fixed seat and prolong the service life of the fixed seat.

Because the utility model adopts the above technical scheme, the spring and the pull rope are respectively connected to the two ends of the rotating rod, and the pull rope is hung on the pulley at the lower end of the hook. When the lifting rope breaks, the hanger falls and the pull rope relaxes , the rotating rod rotates horizontally under the tension of the spring, and the outer end is stuck in the card slot column, and the inner end rests on the fixed seat, which quickly and automatically realizes the anti-falling function of the heavy object. The utility model not only has the function of cushioning the falling of heavy objects, but also has the function of buffering the lifting of heavy objects, thereby ensuring safety to the greatest extent, and the structure is simple and effective, and the cost is low.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic structural view of the utility model when it works.

Fig. 3 is a schematic diagram of the connection structure between the fixed plate, the fixed seat and the rotating rod of the present invention.

Fig. 4 is a schematic diagram of the working structure of the fixed plate, the fixed seat and the rotating rod of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, specific embodiment of the present utility model is described in detail.

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a rotating anti-fall device for lifting equipment includes a slotted column 1, a hook 4, a roller 6, a pull rope 7, a fixed seat 8, and a fixed plate 9 and a rotating rod 10, the slotted column 1 is fixed in the lifting rails on both sides of the object to be lifted 2, the center of the top of the object to be lifted 2 is fixed with a fixed frame 5, and the hook 4 runs through the top of the fixed frame 5 , and the upper end of the hook 4 is connected with the lifting rope 3, the lower end of the hook 4 is fixed with a pulley, the upper end of the pulley on the hook 4 is also provided with a limit plate, and the two rollers 7 are fixed on the object to be lifted at intervals through the bracket 2, and the two rollers 7 are located inside the fixed frame 5, and the two fixed plates 9 are respectively fixed on the two ends of the top of the object to be lifted 2, and the rotating rod 10 is connected to the fixed plate 9 through the rotation of the rotating shaft 101, Two fixed bases 8 are installed on the inner side of the fixed plate 9 respectively, the upper end of the fixed base 8 and the rotating rod 10 is connected by a spring 11, the stay cord 7 goes around the two rollers 6 and the pulley, and runs through the fixed frame 5 The lower ends of the two rotating rods 10 are connected with the fixed seat 8 . Buffer springs 401 are respectively fixed on the upper ends of both sides of the limiting plate. The end of the top of the fixing seat 8 close to the fixing plate 9 is also provided with a buffer elastic piece 81 . The utility model can make the rotating rod and the fixing seat form a certain angle by setting the installation positions of the rotating shaft and the fixing plate, so that the rotating rod and the fixing seat are in the shape of "eight", which is more conducive to the fixing of heavy objects.

The working principle of the utility model is as follows. When the hoisting equipment works normally, the hoisting rope pulls the hook, and the hook interacts with the fixed frame to drive the lifted object to go up and down. The hook is close to the top of the fixed frame together, and the pull rope pulls the lower end of the rotating rod, so that the upper end of the rotating rod stretches the spring, and the rotating rod maintains a vertical state under the action of the pulling rope and spring force; when the lifting rope breaks, the hook falls, When the pull rope is loose, the rotating rod rotates to be horizontal under the tension of the spring, and the outer end is stuck in the slot column, and the inner end rests on the fixed seat, which quickly and automatically realizes the anti-falling function of the heavy object.

Claims (3)

1. the rotary type falling proof device of a lifting means, it is characterized in that: comprise draw-in groove post (1), suspension hook (4), roller (6), stay cord (7), permanent seat (8), adapter plate (9) and dwang (10), described draw-in groove post (1) is fixed on by the fluctuating orbit of the both sides of lifting thing (2), the described center of top by lifting thing (2) is fixed with fixed mount (5), described suspension hook (4) runs through fixed mount (5) top, and the upper end of suspension hook (4) is connected with hoisting rope (3), the lower end of suspension hook (4) is fixed with pulley, the upper end of described suspension hook (4) top sheave is also provided with positioning plate, two rollers (7) are fixed on by the top promoting thing (2) by spacer support frame, and two rollers (7) are all positioned at fixed mount (5) inside, two adapter plates (9) are separately fixed at by the two ends at the top promoting thing (2), described dwang (10) is rotatably connected on adapter plate (9) by rotating shaft (101), two permanent seats (8) are arranged on the inner side of adapter plate (9) respectively, described permanent seat (8) is connected by spring (11) with the upper end of dwang (10), described stay cord (7) walks around two rollers (6) and pulley, and run through fixed mount (5) to be connected with the lower end of permanent seat (8) by two dwangs (10).

2. the rotary type falling proof device of a kind of lifting means according to claim 1, is characterized in that: the upper end of described positioning plate both sides is fixed with recoil spring (401) respectively.

3. the rotary type falling proof device of a kind of lifting means according to claim 1, is characterized in that: described permanent seat (8) top is also provided with buffering spring sheet (81) near one end of adapter plate (9).