CN216836840U

CN216836840U - Double-beam bridge crane with lifting limiting structure

Info

Publication number: CN216836840U
Application number: CN202220514557.7U
Authority: CN
Inventors: 王占良; 赵国彬; 苑松飞; 王洪昌; 王硕
Original assignee: Henan Zhongke Explosion Proof Machinery Co ltd
Current assignee: Henan Zhongke Explosion Proof Machinery Co ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-06-28
Anticipated expiration: 2032-03-10

Abstract

The utility model relates to the field of cranes, concretely relates to double-beam bridge crane with lifting limit structure, including the double-beam that the interval set up, the both ends fixedly connected with end beam of double-beam, the equal fixedly connected with track in top of double-beam, the dolly board has gone on the track, the hoist engine is installed at the top of dolly board, the hoist engine is connected with driving motor, the winding has wire rope on the hoist engine, wire rope wears to establish on the movable pulley, the movable pulley is installed on the pulley yoke, the bottom of dolly board is provided with buffer, stop gear is installed to buffer's lateral part, stop gear includes the vertical mounting panel of installing in dolly board bottom, be provided with the gag lever post along its direction interval on the mounting panel, the fixed plate of horizontal setting is installed at the top of pulley yoke, the electric putter of horizontal setting is installed at the top of fixed plate, electric putter's expansion end fixedly connected with the limit switch who cooperatees with the gag lever post; the lifting hook is used for solving the problem that the existing lifting hook of the crane damages the crane trolley.

Description

Double-beam bridge crane with lifting limiting structure

Technical Field

The utility model relates to a hoist field, concretely relates to double-beam bridge crane with promote limit structure.

Background

The crane refers to a multi-action hoisting machine for vertically lifting and horizontally carrying heavy objects within a certain range, which is also called a crown block, a gantry crane and a crane, the bridge crane generally comprises a main beam, an end beam, a trolley running mechanism, a cart running mechanism, a lifting mechanism and the like, the cart running mechanism drives the end beam so as to enable the whole bridge crane to move along a guide rail in the length direction of a workshop, the lifting mechanism is connected with a lifting hook through a steel wire rope of a winch, and the lifting hook is used for lifting the goods; lifting height limiting devices are mounted on the crane, weight type limiting devices are mostly used at the present stage, weight falling accidents are easy to happen, the weight needs to be matched with a pull wire to complete opening and closing actions, and the pull wire is easy to wind together with a steel wire rope; the using effect is poor, and the lifting hook impacts the top to damage the crane trolley.

SUMMERY OF THE UTILITY MODEL

The utility model provides a two roof beam bridge crane with promote limit structure is used for solving current crane hook and dashes the problem that the top caused the damage to the monkey.

The technical scheme of the utility model is realized like this: the utility model provides a two roof beam bridge crane with promote limit structure, including the two roof beams that the interval set up, the both ends fixedly connected with end beam of two roof beams, the equal fixedly connected with track in top of two roof beams, it has the dolly board to go on the track, the hoist engine is installed at the top of dolly board, the hoist engine is connected with driving motor, the winding has wire rope on the hoist engine, wire rope wears to establish on the movable pulley, the movable pulley is installed on the pulley yoke, the bottom of dolly board is provided with buffer, stop gear is installed to buffer's lateral part, stop gear includes the vertical mounting panel of installing in dolly board bottom, be provided with the gag lever post along its direction of height interval on the mounting panel, the fixed plate that the top fixed mounting level of pulley yoke set up, the electric putter that the level set up is installed at the top of fixed plate, electric putter's expansion end fixedly connected with and gag lever post matched with limit switch, electric putter's movable part is flexible to the one side that is close to the gag lever post.

The center of the trolley board is provided with a hole, and the steel wire rope is arranged through the hole.

The limiting rod is perpendicular to the mounting plate.

The limit switch is a cross limit switch, and a cross rod of the limit switch is arranged close to the limit rod.

The buffer device comprises a plurality of springs fixedly mounted at the bottom of the trolley plate, and the bottom of each spring is fixedly connected with a buffer plate.

The buffer plate is made of rubber, and holes for the steel wire ropes to pass through are formed in the buffer plate.

The technical scheme of the utility model has following positive effect: the utility model discloses be provided with stop gear, there is the mounting panel of vertical setting bottom the dolly board, and the interval is provided with the gag lever post on the mounting panel, and electric putter is installed at the top of fixed plate, and electric putter's tip fixedly connected with limit switch, electric putter withdrawal when the lifting hook descends, make limit switch not touch with the gag lever post mutually; when the lifting hook rises, the electric push rod extends out to enable the limit switch to touch the limiting rod, the limit switch firstly touches the limiting rod positioned at the lower part, the winch operates to decelerate, the lifting speed of the lifting hook is slowed down, the lifting hook continues to move upwards, the limit switch touches the limiting rod positioned at the upper part, the winch stops operating, and the lifting hook does not continue to rise; when limit switch broke down, the lifting hook can rise all the time and touch the buffer board, extrudees the spring simultaneously, and spring and buffer board play the effect of buffering, avoid the lifting hook to cause the damage to the dolly board.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top view of the connection of the double beam to the trolley panel.

Detailed Description

As shown in figures 1 and 2, a double-beam bridge crane with a lifting limit structure comprises double beams 1 arranged at intervals, two ends of each double beam 1 are fixedly connected with end beams, the tops of the double beams 1 are both fixedly connected with a track 2, a trolley plate 3 runs on the track 2, a winch 4 is installed at the top of the trolley plate 3, the winch 4 is connected with a driving motor, a steel wire rope 5 is wound on the winch 4, the steel wire rope 5 penetrates through a movable pulley 6, the movable pulley 6 is installed on a pulley frame 7, a lifting hook is installed at the bottom of the pulley frame 7, a buffer device is arranged at the bottom of the trolley plate 3, a limit mechanism is installed at the side part of the buffer device, the limit mechanism comprises a mounting plate 8 vertically installed at the bottom of the trolley plate 3, limit rods 9 are arranged on the mounting plate 8 at intervals along the height direction of the mounting plate, a fixing plate 10 horizontally arranged at the top of the pulley frame 7 is fixedly installed, an electric push rod 17 horizontally arranged at the top of the fixing plate 10, the movable end of the electric push rod 17 is fixedly connected with a limit switch 11 matched with the limit rod 9, and the movable part of the electric push rod 17 extends towards one side close to the limit rod 9; specifically, the winch 4 is started, the steel wire rope 5 drives the lifting hook to move upwards, the limit switch 11 firstly touches the limit rod 9 at the lower part, the action of the winch 4 is decelerated, the lifting speed of the lifting hook is reduced, the lifting hook continues to move upwards, the limit switch 11 touches the limit rod 9 at the upper part, the winch 4 stops acting, and the lifting hook does not continue to lift; when the lifting hook descends, the movable end of the electric push rod 17 retracts to enable the limit switch 11 not to be in contact with the limit rod 9, and when the lifting hook ascends, the movable end of the electric push rod 17 extends out to enable the limit switch 11 to be in contact with the limit rod 9.

Preferably, a hole 16 is formed in the center of the trolley plate 3, and the steel wire rope 5 is arranged through the hole 16; the hoist 4 is installed on the top of the trolley board 3, and the steel wire rope 5 needs to pass through the trolley board 3.

Preferably, the limiting rod 9 is perpendicular to the mounting plate 8; the mounting panel 8 is vertical setting, then the gag lever post 9 is horizontal setting, and when limit switch 11 rose, limit switch 11 will take place the touching with gag lever post 9.

Preferably, the limit switch 11 is a cross limit switch; the cross limit switch adopts SNB-27-SL2 produced by SUNS company, the word limit switch is contacted with the limit rod 9 for the first time to play the role of speed reduction, and is contacted with the limit rod 9 for the second time to stop the action, thereby ensuring the effectiveness of the action.

Preferably, the buffer device comprises a plurality of springs 12 fixedly arranged at the bottom of the trolley plate 3, and the bottom of each spring 12 is fixedly connected with a buffer plate 13; buffer board 13 is located the below in hole 16, and when limit switch 11 broke down, the lifting hook can rise all the time and touch buffer board 13, extrudees spring 12 simultaneously, and spring 12 and buffer board 13 play the effect of buffering, avoid the lifting hook to cause the damage to dolly board 3.

Preferably, the buffer plate 13 is made of rubber, and the buffer plate 13 is provided with a hole for the steel wire rope 5 to pass through; the position of the holes in the damping plate 13 corresponds to the position of the holes 16 in the bogie plate 3.

Claims

1. The utility model provides a two roof beam bridge crane with promote limit structure, includes two roof beams (1) that the interval set up, the both ends fixedly connected with end beam of two roof beams (1), the equal fixedly connected with track (2) in top of two roof beams (1), it has dolly board (3) to go on track (2), hoist engine (4), its characterized in that are installed at the top of dolly board (3): a steel wire rope (5) is wound on the winch (4), the steel wire rope (5) penetrates through the movable pulley (6), the movable pulley (6) is installed on the pulley yoke (7), the bottom of the trolley plate (3) is provided with a buffer device, the side part of the buffer device is provided with a limiting mechanism, the limiting mechanism comprises a mounting plate (8) vertically installed at the bottom of the trolley plate (3), limiting rods (9) are arranged on the mounting plate (8) at intervals along the height direction of the mounting plate, the top of the pulley yoke (7) is fixedly provided with a fixing plate (10) horizontally arranged, the top of the fixing plate (10) is provided with an electric push rod (17) horizontally arranged, and the movable end of the electric push rod (17) is fixedly connected with a limiting switch (11) matched with the limiting rods (9); the movable part of the electric push rod (17) extends towards one side close to the limiting rod (9).

2. The double-beam bridge crane with the lifting limit structure as claimed in claim 1, wherein: a hole (16) is formed in the center of the trolley board (3), and the steel wire rope (5) is arranged through the hole (16).

3. The double-beam bridge crane with the lifting limit structure as claimed in claim 2, wherein: the limiting rod (9) is vertical to the mounting plate (8).

4. The double-beam bridge crane with the lifting limit structure as claimed in claim 3, wherein: the limit switch (11) is a cross limit switch, and a cross rod of the limit switch (11) is arranged at one side close to the limit rod (9).

5. The double-beam bridge crane with the lifting limit structure as claimed in claim 1, wherein: the buffer device comprises a plurality of springs (12) fixedly mounted at the bottom of the trolley plate (3), and the bottoms of the springs (12) are fixedly connected with buffer plates (13).

6. The double-beam bridge crane with the lifting limit structure as claimed in claim 5, wherein: the buffer plate (13) is made of rubber, and a hole for the steel wire rope (5) to pass through is formed in the buffer plate (13).