CN212101802U

CN212101802U - Limiting device

Info

Publication number: CN212101802U
Application number: CN202020155815.8U
Authority: CN
Inventors: 程毅
Original assignee: Chongqing Kunyuan Lifting Equipment Co ltd
Current assignee: Chongqing Kunyuan Lifting Equipment Co ltd
Priority date: 2020-02-08
Filing date: 2020-02-08
Publication date: 2020-12-08
Anticipated expiration: 2030-02-08

Abstract

The utility model discloses a limiting device, which comprises an electric hoist, a fixed plate, a vertical plate with holes, a limiting rod, a slide block, a limiting stopper, a stop block, a rope guider, a shifting block and a winding drum, wherein the shifting block can be contacted with the stop block at the two ends of the limiting rod when the rope guider moves to the positions close to the left end and the right end of the winding drum, the stop block is shifted, so that the limiting rod is pushed to move left and right, when the slide block moves along with the limiting rod, the feeler rod of the limiting stopper in the moving direction can be pushed, so that the feeler rod is contracted, when the feeler rod of the limiting stopper is contracted to the stroke end point, the controller of the electric hoist controls a driving motor of the electric hoist to stop running, and controls a brake of the electric hoist to be locked and stopped running, so as to prevent the electric hoist from being damaged, and the stop, the device simple structure, the reaction is sensitive, and the installation is convenient, can effectual protection electric block to the later maintenance is with low costs.

Description

Limiting device

Technical Field

The utility model relates to an electric block auxiliary device technical field specifically is a stop device.

Background

The electric hoist is a special hoisting device, is installed on a crown block and a gantry crane, has the characteristics of small volume, light dead weight, simple operation, convenient use and the like, and is used in places such as industrial and mining enterprises, storage, docks and the like.

The limiting device of the existing electric hoist is limited in a bidirectional and integrated mode, the limiting structure is complex in design, the service life is short, and the replacement cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stop device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a limiting device comprises an electric hoist, a fixed plate, vertical plates with holes, a limiting rod, a sliding block, a limiting stopper, a stop block, a rope guide, a shifting block and a winding drum, wherein the front of the electric hoist is fixedly connected with the fixed plate through bolts, the fixed plate is of a square plate-shaped structure with the bottom end bent forwards, two vertical plates with holes are welded on the front of the bottom bent end of the fixed plate in a bilateral symmetry mode, the side surfaces of the vertical plates with holes are provided with circular through holes, the limiting rod is connected in the through holes in a sliding mode, the limiting rod is a circular metal rod, the middle of the limiting rod is fixedly connected with the sliding block;

the front surface of the fixed plate, close to the top, is fixedly connected with two stoppers in a bilateral symmetry mode through bolts, probe rods of the stoppers are arranged towards a sliding block, the sliding block is of a cuboid structure, circular grooves are formed in the left side surface and the right side surface, close to the top, of the sliding block, the top ends of the probe rods of the left stopper and the right stopper are placed in the grooves, the stoppers are electrically connected with a controller of the electric block, the probe rods of the stoppers in the moving direction can be pushed when the sliding block moves left and right along with the stopper rods, so that the probe rods shrink, the stoppers send out electric signals when the probe rods of the stoppers shrink to the stroke end point, the controller of the electric block controls a driving motor of the electric block to stop running, and controls a brake of the electric block;

the stop block is fixedly connected to the front side of the electric hoist through a bolt and is positioned at two ends of a winding drum of the electric hoist, a round through hole is arranged at the position, close to the bottom, of the side surface of the stop block, a limit rod is connected in the through hole in a sliding manner, two groups of stop blocks are fixedly connected at two ends of the limit rod and positioned at the inner side of the stop block, the winding drum is wound with a steel wire rope which is unreeled and reeled through a rope guider on the electric hoist, the rope guide is connected to the electric hoist in a sliding manner, a shifting block is arranged on the front surface of the rope guide close to the top of the rope guide, the shifting block is of a square rod-shaped structure, which is provided with two sides which are positioned on the front surface of the rope guide and can be contacted with the stop blocks at the two ends of the limiting rod when the rope guide moves left and right to be close to the left and right ends of the winding drum to stir the stop blocks, therefore, the limiting rod is pushed to move left and right, and the stop block has the function of preventing the limiting rod from being pushed to the top, so that the potential safety hazard of the transmission limiting device is avoided;

as a further aspect of the present invention: the fixing plate is a metal stamping part, and the front surface of the fixing plate is provided with a fixing plate mounting hole and a limiter mounting hole, so that the fixing plate is convenient to disassemble and assemble;

as a further aspect of the present invention: the limiter is an XK2 limiter, the two limiters are independently arranged on the fixing plate, and the cost of a single limiter is low, so that the later maintenance and replacement are convenient;

as a further aspect of the present invention: a polytetrafluoroethylene bushing is arranged in a through hole at the bottom end of the side face of the stop block, so that the friction force generated when the limiting rod moves left and right is reduced, and the sensitivity of the limiting device is ensured;

as a further aspect of the present invention: the bottom end of the sliding block and the top of the stopping block are provided with quick-release pipe clamps which are locked and fixed through bolts, so that the installation and adjustment are convenient;

as a further aspect of the present invention: the bottom of slider and the quick detach pipe clamp inner wall at the top of stop block are equipped with the dogtooth, improve frictional force, and slider and stop block are fixed more firmly on the gag lever post.

Compared with the prior art, the beneficial effects of the utility model are that: the shifting block can move about the rope guide and contact with the stop block at gag lever post both ends when being close to the left and right ends of reel, stir the stop block, thereby promote the gag lever post and remove, can promote the probe rod of the stopper of moving direction when the slider removes along with the gag lever post, make the probe rod shrink, the gag lever post sends out the signal of telecommunication when the probe rod of stopper shrinks to the stroke terminal point, electric block's controller control electric block's driving motor stall, and control electric block's stopper locking, the stall, prevent electric block from damaging, and the dog has the effect that prevents the gag lever post and dash the top, transmission stop device's potential safety hazard has been avoided, the device simple structure, the reaction is sensitive, the installation is convenient, can effectual protection electric block, and the later maintenance is with low costs.

Drawings

Fig. 1 is a schematic structural view of a limiting device.

Fig. 2 is a schematic structural view of the limiting device mounted on the electric hoist.

In the figure: electric block 1, fixed plate 2, foraminiferous riser 3, gag lever post 4, slider 5, stopper 6, stop block 7, dog 8, rope guide 9, shifting block 10, reel 11.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, in an embodiment of the present invention, a limiting device includes an electric hoist 1, a fixing plate 2, a vertical plate with holes 3, a limiting rod 4, a slider 5, a limiter 6, a stop block 7, a stop block 8, a rope guide 9, a shifting block 10 and a winding drum 11, the front of the electric hoist 1 is fixedly connected with the fixing plate 2 through bolts, the fixing plate 2 is a square plate-shaped structure with a forward bending bottom end, two vertical plates with holes 3 are welded on the front of the bending bottom end of the fixing plate 2 in a bilateral symmetry manner, a circular through hole is formed in the side surface of the vertical plate with holes 3, the limiting rod 4 is connected in a sliding manner in the through hole, the limiting rod 4 is a circular metal rod, the slider 5 is fixedly connected to the middle of the limiting rod 4;

the front side of the fixed plate 2, close to the top, is fixedly connected with two stoppers 6 through bolts in a bilateral symmetry manner, probe rods of the stoppers 6 are arranged towards a slider 5, the slider 5 is of a cuboid structure, circular grooves are formed in the left side surface and the right side surface of the slider, close to the top, the top ends of the probe rods of the left stopper 6 and the right stopper 6 are placed in the grooves, the stoppers 6 are electrically connected with a controller of the electric hoist 1, the probe rods of the stopper 6 in the moving direction can be pushed when the slider 5 moves left and right along with the stopper rod 4, so that the probe rods shrink, the stopper 6 sends out an electric signal when the probe rods of the stoppers 6 shrink to the stroke end, the controller of the electric hoist 1 controls a driving motor of the electric hoist 1 to stop running, and controls a brake of the electric hoist 1 to be locked and stop;

the stop block 8 is fixedly connected to the front of the electric hoist 1 through a bolt and located at two ends of a winding drum 11 of the electric hoist 1, a circular through hole is formed in the side face of the stop block 8 close to the bottom, a limiting rod 4 is connected in the through hole in a sliding manner, two stop blocks 7 are fixedly connected to two ends of the limiting rod 4 close to the inner side of the stop block 8, a steel wire rope is wound on the winding drum 11 and unreeled and reeled through a rope guider 9 on the electric hoist 1, the rope guider 9 is connected on the electric hoist 1 in a sliding manner, a shifting block 10 is arranged on the front face of the rope guider 9 close to the top, the shifting block 10 is of a square rod-shaped structure and is provided with two sides located on the front face of the rope guider 9, and can be contacted with the stop blocks 7 at two ends of the limiting rod 4 when the rope guider 9 moves to the left end and the right end of the, the stop block 8 has the function of preventing the limit rod 4 from impacting the top, so that the potential safety hazard of a transmission limit device is avoided;

the fixing plate 2 is a metal stamping part, and a fixing plate mounting hole and a limiter mounting hole are formed in the front surface of the fixing plate, so that the fixing plate is convenient to disassemble and assemble;

the position limiters 6 are XK2 position limiters, the two position limiters 6 are independently arranged on the fixing plate 2, and the cost of the single position limiter 6 is low, so that the later maintenance and replacement are convenient;

a polytetrafluoroethylene bushing is arranged in a through hole at the bottom end of the side surface of the stop block 8, so that the friction force generated when the limiting rod 4 moves left and right is reduced, and the sensitivity of the limiting device is ensured;

the bottom end of the sliding block 5 and the top of the stopping block 7 are provided with quick-release pipe clamps which are locked and fixed through bolts, so that the installation and adjustment are convenient;

the bottom of slider 5 and the quick detach pipe clamp inner wall at the top of stop block 7 are equipped with the dogtooth, improve frictional force, and slider 5 and stop block 7 are fixed more firmly on gag lever post 4.

The utility model discloses a theory of operation is: the shifting block 10 can move about rope guide 9 and contact with stop block 7 at 4 both ends of gag lever post when being close to the left and right ends of reel 11, stir stop block 7, thereby it removes about promoting gag lever post 4, when slider 5 removes about along with gag lever post 4 can promote the probe rod of stopper 6 of moving direction, make the probe rod shrink, stopper 6 signals of telecommunication when the probe rod of stopper 6 shrinks to the stroke terminal point, the driving motor shutdown of controller control electric block 1 of electric block 1, and the stopper of control electric block 1 is locked, the shut down, prevent electric block 1 from damaging, and dog 8 has the effect that prevents gag lever post 4 top, transmission stop device's potential safety hazard has been avoided.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A limiting device comprises an electric hoist, a fixed plate, vertical plates with holes, a limiting rod, a sliding block, a limiting stopper, a stop block, a rope guide, a shifting block and a winding drum, and is characterized in that the front of the electric hoist is fixedly connected with the fixed plate through bolts, the fixed plate is of a square plate-shaped structure with the bottom end bent forwards, two vertical plates with holes are welded on the front of the bottom bent end of the fixed plate in a bilateral symmetry manner, the side surfaces of the vertical plates with holes are provided with circular through holes, the limiting rod is connected in the through holes in a sliding manner, the limiting rod is a circular metal rod, the middle of the limiting rod is fixedly connected with the sliding block;

two limiters are fixedly connected to the positions, close to the top, of the front face of the fixed plate in a bilateral symmetry mode through bolts, probe rods of the limiters face to the sliding block, the sliding block is of a cuboid structure, circular grooves are formed in the positions, close to the top, of the left side face and the right side face of the sliding block, the top ends of the probe rods of the left limiter and the right limiter are placed in the grooves, and the limiters are electrically connected with a controller of the electric hoist;

the dog passes through bolt fixed connection in electric block's front, and it is located the both ends of electric block's reel, and the side of dog is close to bottom department and is equipped with circular through-hole, and sliding connection has the gag lever post in the through-hole, and the both ends of gag lever post are located two sets of stop blocks of inboard fixedly connected with of dog, the reel is rolled up there is wire rope, rope guide sliding connection is on electric block, and rope guide's front is close to top department and is equipped with the shifting block, the shifting block is square rod-like structure, and it is equipped with two positive both sides that are located rope guide altogether.

2. The limit device according to claim 1, wherein the fixing plate is a metal stamping part, and the front surface of the fixing plate is provided with a fixing plate mounting hole and a limiter mounting hole.

3. The restraint device of claim 1 wherein the restraint is an XK2 restraint, the two restraints being independently mounted on the fixation plate.

4. The spacing device of claim 1 wherein a teflon bushing is disposed in the through hole at the bottom end of the side of the stop.

5. The spacing device of claim 1, wherein the bottom end of the sliding block and the top of the stopping block are provided with quick release pipe clamps which are locked and fixed by bolts.

6. The limiting device according to claim 1, wherein the bottom end of the sliding block and the inner wall of the quick release pipe clamp at the top of the stopping block are provided with convex teeth.