CN220467421U - Protection device of electric hoist - Google Patents

Abstract

The utility model discloses a protection device of an electric hoist, which comprises a shell and a protection mechanism; a shell: the lower ends of the outer cambered surfaces of the shells are respectively provided with a vertical plate, the lower ends of the vertical plates are fixedly connected with the upper ends of the connecting plates, the inside of the shell is rotationally connected with a winding roller through a bearing, the outer surfaces of the winding roller are wound with steel wires, the steel wires are in sliding connection with pulleys in the lifting appliance, the upper sides of the outer cambered surfaces of the shell are provided with connecting seats, the upper ends of the connecting seats are respectively provided with a mounting plate, and one ends, close to the inner center of the shell, of the mounting plates are rotationally connected with guide pulleys through bearings; protection mechanism: the protection device is arranged at the lower end of the connecting plate, and when the electric hoist is in a top-punching phenomenon, damping, shock absorption and protection can be carried out through reversing of force, so that the impact force born by the electric hoist is further reduced, the traditional mode of protecting the electric hoist through a fire breaker is replaced, and the service life of the electric hoist is prolonged.

Description

Protection device of electric hoist

Technical Field

The utility model relates to the technical field of hoisting equipment, in particular to a protection device of an electric hoist.

Background

The electric hoist is special lifting equipment, is arranged on the crown block and the gantry crane, has the characteristics of small volume, light dead weight, simple operation, convenient use and the like, and is used for places such as industrial and mining enterprises, storage, wharfs and the like;

the electric hoist is divided into a wire rope electric hoist and a loop chain electric hoist, most of the electric hoist is used for paying out a wire rope through the wire reel and other equipment to enable the hoist to descend when in work, workers are connected with corresponding goods through the hoist, after connection is completed, the driving equipment drives the wire reel to rotate and retract part of the wire rope to enable the hoist to ascend, goods are lifted, and then the driving equipment drives the electric hoist to move, so that the transportation work of the goods is realized;

the current electric hoist is through being equipped with the breaker and carrying out protective operation to electric hoist, when using, after hoist lifting to appointed high, the breaker can cut off the power of actuating device, play the effect of restriction to the hoist from this, but in actual operation in-process, because of the phenomenon that leads to the failure of breaker and do not work easily after multiple external force reasons or long-time use for the hoist frequently takes place to dash the condition of top, then cause electric hoist's excessive wearing and tearing gently, reduce electric hoist's life, probably take place the production incident if serious, for this reason, we propose an electric hoist's protection device.

Disclosure of Invention

The utility model aims to overcome the existing defects, and provides the protection device of the electric hoist, which can realize damping, shock absorption and protection through the reversing of force when the top impact phenomenon is caused by the matching arrangement of the connecting rod and the regulating block, simultaneously reduce the size of a protection structure, further reduce the impact force applied to the electric hoist, prevent the electric hoist from being damaged due to the impact force generated by the lifting appliance top impact, replace the traditional mode of protecting the electric hoist through a fire breaker, prolong the service life of the electric hoist and effectively solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a protection device of an electric hoist comprises a shell and a protection mechanism;

a shell: the lower ends of the outer cambered surfaces of the shells are respectively provided with a vertical plate, the lower ends of the vertical plates are fixedly connected with the upper ends of the connecting plates, the inside of the shell is rotationally connected with a winding roller through a bearing, the outer surfaces of the winding roller are wound with steel wires, the steel wires are in sliding connection with pulleys in the lifting appliance, the upper sides of the outer cambered surfaces of the shell are provided with connecting seats, the upper ends of the connecting seats are respectively provided with a mounting plate, and one ends, close to the inner center of the shell, of the mounting plates are rotationally connected with guide pulleys through bearings;

protection mechanism: the electric hoist is arranged at the lower end of the connecting plate, is matched with the adjusting block through the connecting rod, can perform damping vibration absorption protection through reversing force when a jacking phenomenon is caused, reduces the size of a protection structure, further reduces the impact force received by the electric hoist, prevents the electric hoist from being damaged due to the impact force generated by jacking the lifting appliance, replaces the traditional mode of protecting the electric hoist through a fire breaker, and prolongs the service life of the electric hoist.

Further, the control switch group is positioned outside the shell, and the input end of the control switch group is electrically connected with an external power supply.

Further, protection machanism includes direction slide column, limiting plate, guard plate, installation pole, regulating seat, mount pad, connecting rod and hydraulic damper, the direction slide column sets up in the four corners of connecting plate lower extreme respectively, the lower extreme of direction slide column all is provided with the limiting plate, direction slide column corresponds the direction slide hole sliding connection that sets up with the guard plate upper end respectively, the installation pole sets up respectively in the direction spout that the connecting plate lower extreme set up, the left and right sides of installation pole extrados is sliding connection respectively has the regulating seat, regulating seat all with the inner wall sliding connection of direction spout, the mount pad sets up respectively in the front and back both sides of guard plate upper end, be connected with the connecting rod through the round pin axle rotation in the mounting groove that the mount pad upper end set up respectively, the upper end of connecting rod is provided with hydraulic damper respectively through the lower extreme swivelling joint of round pin axle with vertical adjacent regulating seat, the left and right sides between connecting plate and the guard plate relative medial surface, when arousing towards a phenomenon, can carry out damping and shock attenuation protection through the switching-over of power, the space that elasticity buffer assembly occupy has been reduced simultaneously, the size of protective structure has also been reduced, the impact force that electric hoist received.

Further, the protection mechanism further comprises springs, the springs are respectively arranged between one end, far away from the inner center of the shell, of the adjusting seat and the inner wall of the guide chute, the springs are respectively sleeved outside the left side and the right side of the mounting rod, and under the elastic action of the springs, the springs are damped and buffered.

Further, still include driving motor, driving motor sets up respectively in the front end of the mounting panel of front side, and driving motor output shaft's rear end respectively with the front end fixed connection of the guide pulley of the front side that vertically neighbors, driving motor's input all is connected with the output electricity of control switch group, can drive the goods through guide pulley and remove.

Further, the lifting device further comprises a motor, the motor is arranged at the right end of the shell, the left end of an output shaft of the motor is fixedly connected with the right end of the winding roller, the input end of the motor is electrically connected with the output end of the control switch group, and the position of the lifting device can be adjusted through the winding roller.

Further, still include the rubber pad, the rubber pad sets up in the lower extreme of guard plate, and the rubber pad can prevent that the guard plate from receiving the damage to extension guard plate's life.

Compared with the prior art, the utility model has the beneficial effects that: this protection device of electric block has following benefit:

in the in-process actual operation process that goods risen, the phenomenon that the firearm is out of order and is not operated is easily led to because of multiple external force reason, this will lead to the lifting hook to continue to rise, thereby arouse the phenomenon of punching the top, this moment the lifting hook passes through rubber pad and guard plate contact, guard plate upper end lifting hook's pressure begins to upwards move along the direction slide column, and the connecting rod can gradually the inclination change takes place towards the horizontality when the guard plate moves along the direction slide column, thereby make two regulating bases remove to the one end of keeping away from shell inside center along the installation pole, the spring shrink, make the hoist shift to the horizontal direction to the vertical impact force of guard plate, through the sliding friction damping of regulating block and installation pole, under the elastic action of spring, the shock attenuation buffering, simultaneously, the impact force that reduces hoist and punching the production is through the hydraulic damper, utilize the damping to absorb energy shock, prevent to cause the damage to shell and internal equipment because of punching the top, through the cooperation setting of connecting rod and regulating block, when arousing the phenomenon of punching the top, can carry out damping shock attenuation through the switching-over of power, the size of protective structure has been reduced simultaneously, further reduce the impact force that the electric hoist received, prevent electric hoist from producing the electric hoist and the life-span of the traditional mode that the electric hoist from the impact that the electric hoist produced and broken by the life-to the life-time of the hoist.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a schematic view of a front sectional plan structure of the present utility model.

In the figure: the device comprises a shell 1, a control switch group 2, a winding roller 3, a steel wire rope 4, a lifting appliance 5, a vertical plate 6, a connecting plate 7, a protection mechanism 8, a guide sliding column 81, a limiting plate 82, a protection plate 83, a mounting rod 84, an adjusting seat 85, a mounting seat 86, a connecting rod 87, a spring 88, a hydraulic damper 89, a connecting seat 9, a mounting plate 10, a guide pulley 11, a driving motor 12, a motor 13 and a rubber pad 14.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, the present embodiment provides a technical solution: a protection device of an electric hoist comprises a shell 1 and a protection mechanism 8;

the shell 1: the lower ends of the outer cambered surfaces of the lifting devices are respectively provided with a vertical plate 6, the lower ends of the vertical plates 6 are fixedly connected with the upper ends of connecting plates 7, the inside of the shell 1 is rotationally connected with a wire winding roller 3 through a bearing, the outer surfaces of the wire winding roller 3 are wound with a steel wire rope 4, the steel wire rope 4 is in sliding connection with pulleys in the lifting devices 5, the upper sides of the outer cambered surfaces of the shell 1 are provided with connecting seats 9, the upper ends of the connecting seats 9 are respectively provided with mounting plates 10, one ends of the mounting plates 10, which are close to the inner centers of the shell 1, are rotationally connected with guide pulleys 11 through the bearings, before working, the electric hoist is moved to a designated working place through external traction equipment, the guide pulleys 11 are in sliding connection with corresponding guide sliding rails, so that goods can be transported conveniently, during use, the lifting devices start to operate through regulation and control equipment, the output shafts drive the wire winding roller 3 to rotate, the steel wire rope 4 is discharged by the wire winding roller 3 to enable the lifting devices 5 to descend, after the connection of the lifting devices are completed, the lifting devices drive the lifting devices to rotate parts of the steel wire rope 4 through the regulation and control equipment to drive the lifting devices to lift the lifting devices through the corresponding goods, and then the goods to be driven to rotate through the guide pulleys 11;

protection mechanism 8: the protection mechanism 8 is arranged at the lower end of the connecting plate 7, the protection mechanism 8 comprises a guide slide column 81, a limiting plate 82, a protection plate 83, a mounting rod 84, an adjusting seat 85, a mounting seat 86, a connecting rod 87 and a hydraulic damper 89, wherein the guide slide column 81 is respectively arranged at four corners of the lower end of the connecting plate 7, the limiting plate 82 is respectively arranged at the lower end of the guide slide column 81, the guide slide column 81 is respectively and correspondingly arranged at the upper end of the protection plate 83 in a sliding manner through guide slide holes, the mounting rod 84 is respectively arranged in a guide slide groove arranged at the lower end of the connecting plate 7, the left side and the right side of the outer cambered surface of the mounting rod 84 are respectively and slidably connected with the adjusting seat 85, the adjusting seat 85 is respectively and fixedly arranged at the front side and the rear side of the upper end of the protection plate 83, the connecting rod 87 is respectively and rotatably connected with the mounting groove arranged at the upper end of the mounting seat 86 through a pin shaft, the upper ends of the connecting rods 87 are respectively connected with the lower ends of the vertically adjacent adjusting seats 85 in a rotating way through pin shafts, hydraulic dampers 89 are respectively arranged at the left side and the right side between the connecting plates 7 and the opposite inner side surfaces of the protection plates 83, the protection mechanism 8 also comprises springs 88, the springs 88 are respectively arranged between one end of the adjusting seats 85 far away from the inner center of the shell 1 and the inner wall of the guide sliding groove, the springs 88 are sleeved outside the left side and the right side of the mounting rods 84, in the actual operation process of lifting cargoes, the phenomena that the flame arresters are out of order and do not work are easily caused due to various external force causes, the lifting hooks 5 are continuously lifted, so that the top-punching phenomenon is caused, at the moment, the lifting hooks 5 are contacted with the protection plates 83 through rubber pads 14, the pressure of the lifting hooks 5 at the upper ends of the protection plates 83 starts to move upwards along the guide sliding columns 81, and the connecting rods 87 gradually tilt towards the horizontal state when the protection plates 83 move upwards along the guide sliding columns 81, thereby make two regulation seat 85 remove to the one end of keeping away from shell 1 inside center along installation pole 84, spring 88 shrink, make hoist 5 shift to the horizontal direction to the vertical impact force of guard plate 83, through the sliding friction damping of regulating block 85 with installation pole 84, under the elastic action of spring 87, shock attenuation buffering, simultaneously provide the resistance of motion through hydraulic damper 89, consume the impact force that hoist 5 dashes the top and produce, utilize the damping to come the energy-absorbing shock attenuation, prevent to cause the damage to shell 1 and internal equipment because of hoist 5 dashes the top, through the cooperation setting of connecting rod 87 and regulating block 84, when causing the phenomenon of dashing the top, can carry out damping shock attenuation protection through the switching-over of power, effectively reduced the space that elastic buffer assembly occupy, the size of protective structure has also been reduced simultaneously, reduce the impact force that electric block received, prevent that electric block from receiving 5 dashes the impact force that the top produced and causing the damage, replace traditional mode through the breaker to protect electric block to the hoist, the life of electric block is prolonged.

Wherein: the control switch group 2 is positioned outside the shell 1, the input end of the control switch group 2 is electrically connected with an external power supply, and the electric elements inside the equipment can be regulated and controlled.

Wherein: still include driving motor 12, driving motor 12 sets up the front end in mounting panel 10 of front side respectively, driving motor 12 output shaft's rear end respectively with the front end fixed connection of the guide pulley 11 of the front side that vertically neighbors, driving motor 12's input all is connected with the output electricity of control switch group 2, through the regulation and control of control switch group 2, driving motor 12 begins the operation, driving motor 12's output shaft drives the guide pulley 11 rotation of front side to drive the goods through guide pulley 11 and remove.

Wherein: the lifting device comprises a shell 1, a motor 13, a winding roller 3, a wire rope 4, a lifting tool 5, a connecting plate 7, a protection plate 83 and a control switch group 2, wherein the motor 13 is arranged at the right end of the shell 1, the left end of an output shaft of the motor 13 is fixedly connected with the right end of the winding roller 3, the input end of the motor 13 is electrically connected with the output end of the control switch group 2, the motor 13 starts to operate through the regulation and control of the control switch group 2 when in use, the output shaft drives the winding roller 3 to rotate, the wire rope 4 is released from the winding roller 3 to enable the lifting tool 5 to descend, workers penetrate through the connecting plate 7 and the protection plate 83 and are connected with corresponding goods, and after connection is completed, the motor 13 drives the winding roller 3 to rotate to retract part of the wire rope 4 to enable the lifting tool 5 to ascend so as to lift the goods.

Wherein: still include rubber pad 14, rubber pad 14 sets up in the lower extreme of guard plate 83, and rubber pad 14 can prevent that guard plate 83 from receiving the damage to extension guard plate 83's life.

The working principle of the protection device of the electric hoist provided by the utility model is as follows: before working, the electric hoist is moved to a designated working place through external traction equipment, the guide pulley 11 is in sliding connection with a corresponding guide sliding rail, the subsequent transportation work of cargoes is facilitated, during use, the regulating and controlling of the control switch group 2 is adopted, the motor 13 starts to operate, the output shaft drives the wire winding roller 3 to rotate, the wire winding roller 3 releases the steel wire rope 4 to enable the lifting appliance 5 to descend, workers connect the lifting appliance 5 with the corresponding cargoes, after connection is completed, the regulating and controlling of the control switch group 2 is adopted, the motor 13 drives the wire winding roller 3 to rotate and withdraw part of the steel wire rope 4 to enable the lifting appliance 5 to ascend, the cargoes are lifted, in the actual operation process of the cargo ascending process, the phenomenon that the fire breaker is out of work easily caused due to various external force causes, the lifting hook 5 is continuously ascended, the top punching condition is caused, the lifting hook 5 is contacted with the protection plate 83 through the rubber pad 14 at the moment, the pressure of the lifting hook 5 at the upper end of the protection plate 83 starts to move upwards along the guide sliding column 81, the connecting rod 87 gradually changes the inclination angle towards the horizontal state when the protection plate 83 moves upwards along the guide sliding column 81, so that the two adjusting seats 85 move towards one end far away from the inner center of the shell 1 along the mounting rod 84, the spring 88 contracts, the vertical impact force of the lifting appliance 5 on the protection plate 83 is transferred to the horizontal direction, the sliding friction damping of the adjusting blocks 85 and the mounting rod 84 is used for damping and buffering under the elastic action of the spring 87, the hydraulic damper 89 is used for providing the moving resistance, the impact force generated by the top of the lifting appliance 5 is consumed, the damping is used for absorbing energy and damping, the damage to the shell 1 and the internal equipment caused by the top of the lifting appliance 5 is prevented, then the driving motor 12 starts to operate under the regulation of the control switch group 2, the output shaft of the driving motor 12 drives the guide pulley 11 on the front side to rotate, so that the goods are driven to move through the guide pulley 11.

It should be noted that, the driving motor 12 disclosed in the above embodiment may be 5IK200A-AF, the motor 13 may be ECMA-C20604RS, and the control switch group 2 is provided with control buttons for controlling the switches of the driving motor 12 and the motor 13 in one-to-one correspondence.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims (5)

1. The utility model provides a protection device of electric block which characterized in that: comprises a shell (1) and a protection mechanism (8);

outer casing (1): the lower end of the outer cambered surface is respectively provided with a vertical plate (6), the lower ends of the vertical plates (6) are fixedly connected with the upper ends of connecting plates (7), the inside of the shell (1) is rotationally connected with a winding roller (3) through a bearing, the outer surface of the winding roller (3) is wound with a steel wire rope (4), the steel wire rope (4) is in sliding connection with a pulley in the lifting appliance (5), the upper side of the outer cambered surface of the shell (1) is provided with a connecting seat (9), the upper ends of the connecting seats (9) are respectively provided with a mounting plate (10), and one end, close to the inner center of the shell (1), of each mounting plate (10) is rotationally connected with a guide pulley (11) through a bearing;

protection mechanism (8): the device is arranged at the lower end of the connecting plate (7);

the protection mechanism (8) comprises a guide slide column (81), limiting plates (82), protection plates (83), mounting rods (84), adjusting seats (85), mounting seats (86), connecting rods (87) and hydraulic dampers (89), wherein the guide slide column (81) is respectively arranged at four corners of the lower end of the connecting plate (7), the lower ends of the guide slide column (81) are respectively provided with the limiting plates (82), the guide slide column (81) is respectively in sliding connection with guide slide holes correspondingly arranged at the upper ends of the protection plates (83), the mounting rods (84) are respectively arranged in guide sliding grooves arranged at the lower ends of the connecting plates (7), the left side and the right side of an outer cambered surface of each mounting rod (84) are respectively in sliding connection with the adjusting seats (85), the adjusting seats (85) are respectively arranged at the front side and the rear side of the upper ends of the protection plates (83), the mounting grooves arranged at the upper ends of the mounting seats (86) are respectively connected with the connecting rods (87) through pin shafts in a rotating mode, the upper ends of the connecting rods (87) are respectively connected with the lower ends of the vertically adjacent adjusting seats (85) in a rotating mode through pin shafts, and the left side and the right side of each connecting plate is respectively provided with the corresponding hydraulic damper (83) between the left side and the right side of each connecting plate (83) and the right side opposite side;

the protection mechanism (8) further comprises springs (88), the springs (88) are respectively arranged between one end, far away from the inner center of the shell (1), of the adjusting seat (85) and the inner wall of the guide chute, and the springs (88) are respectively sleeved outside the left side and the right side of the mounting rod (84).

2. The protection device for electric hoist according to claim 1, characterized in that: the control switch group (2) is positioned outside the shell (1), and the input end of the control switch group (2) is electrically connected with an external power supply.

3. The protection device for electric hoist according to claim 2, characterized in that: the automatic control device is characterized by further comprising a driving motor (12), wherein the driving motor (12) is respectively arranged at the front end of the front mounting plate (10), the rear end of the output shaft of the driving motor (12) is respectively fixedly connected with the front end of the guide pulley (11) at the front side longitudinally adjacent to the front end, and the input end of the driving motor (12) is electrically connected with the output end of the control switch group (2).

4. The protection device for electric hoist according to claim 1, characterized in that: the motor (13) is arranged at the right end of the shell (1), the left end of an output shaft of the motor (13) is fixedly connected with the right end of the winding roller (3), and the input end of the motor (13) is electrically connected with the output end of the control switch group (2).

5. The protection device for electric hoist according to claim 1, characterized in that: the novel protective plate further comprises a rubber pad (14), and the rubber pad (14) is arranged at the lower end of the protective plate (83).