CN115057392A

CN115057392A - Small-size portable hoisting apparatus of electric power operation and maintenance

Info

Publication number: CN115057392A
Application number: CN202210750381.XA
Authority: CN
Inventors: 蔡仲勋; 龙葵; 李秋惠; 陈少锋; 邓剑辉; 陈达敬; 何仲贤; 吴栩晴
Original assignee: Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-09-16
Anticipated expiration: 2042-06-29
Also published as: CN115057392B

Abstract

The invention discloses a small-sized electric power operation and maintenance mobile lifting device, which comprises a bottom plate, wherein the top of the bottom plate is connected with a top plate through a lifting assembly, the top plate is rotatably provided with a stand column, the stand column is connected with a driving assembly, the top of the stand column is fixedly provided with a support plate, the support plate is fixedly provided with a railing, the railing is provided with a movable port, the movable port is rotatably provided with a rotating shaft, the outer part of the rotating shaft is fixedly sleeved with a clapper, one end of the rotating shaft extends out of the movable port and is fixedly connected with the railing through a first torsion spring, the inner side of the clapper is provided with a pointed cone block for removing ice blocks, the top plate is fixedly connected with a plurality of driving blocks which are distributed at intervals, and when the clapper abuts against the driving blocks, the clapper is perpendicular to the driving blocks; when the clapper rotates to be separated from the driving block, the first torsion spring drives the clapper to rotate to the plane of the support plate, and the clapper drives the pointed cone block to synchronously rotate to the plane of the support plate, so that the clapper can clap the ice on the support plate and the pointed cone block can smash the ice on the support plate. The small-sized electric power operation and maintenance mobile lifting device provided by the embodiment of the invention solves the problem that a block is easy to freeze on a support plate, and a safety accident is caused by easy slipping.

Description

Small-size portable hoisting apparatus of electric power operation and maintenance

Technical Field

The invention relates to the technical field of hoisting devices, in particular to a small-sized electric power operation and maintenance mobile hoisting device.

Background

Electric power is an energy source using electric energy as power. In the 70 s of the 19 th century, the invention and application of electric power opened up the second industrialized climax. The technology becomes one of three technological revolution which occur in the world since 18 th century of human history, and the technology changes the lives of people. The invention is the demand of people for continuously increasing electric power in the current internet era, and more products using electric power such as computers, household appliances and the like are invented. It is undeniable that the continuous emergence of new technologies makes electric power a necessity for people.

Need use hoisting apparatus during power maintenance, current hoisting apparatus does not the time spent put in the external world more, in winter, is used for the easily frozen piece on standing people's the support plate on current hoisting apparatus, and can not get the clearance, the condition of skidding easily appears when leading to using for the security greatly reduced during the use.

Therefore, a small-sized electric power operation and maintenance mobile lifting device is needed to solve the above problems.

Disclosure of Invention

The invention aims to provide a small-sized electric power operation and maintenance mobile lifting device, which solves the problems that a carrier plate of the conventional small-sized electric power operation and maintenance mobile lifting device is easy to freeze, and a safety accident is caused by easy slipping.

In order to achieve the purpose, the invention adopts the following technical scheme:

a small-sized electric power operation and maintenance mobile lifting device comprises a bottom plate, wherein the top of the bottom plate is connected with a top plate through a lifting assembly, the top plate is rotatably provided with a stand column, the stand column is connected with a driving assembly, the top of the stand column is fixedly provided with a support plate, the support plate is fixedly provided with a handrail, the handrail is provided with a movable port, the movable port is rotatably provided with a rotating shaft, a clapper is fixedly sleeved outside the rotating shaft, one end of the rotating shaft extends out of the movable port and is fixedly connected with the handrail through a first torsion spring, the inner side of the clapper is provided with a pointed cone block for removing ice blocks, the top plate is fixedly connected with a plurality of driving blocks which are distributed at intervals, and when the clapper abuts against the driving blocks, the clapper is perpendicular to the driving blocks; when the clapper rotates to be separated from the driving block, the first torsion spring drives the clapper to rotate to the plane of the support plate, and the clapper drives the pointed cone block to synchronously rotate to the plane of the support plate, so that the clapper can clap ice on the support plate and the pointed cone block can break the ice on the support plate.

Preferably, the lifting assembly comprises a lead screw, moving grooves are symmetrically formed in the top of the base plate, the lead screw is rotatably installed in the moving grooves, a motor is fixedly installed on the base plate, the output end of the motor extends into the moving grooves and is fixedly connected with the lead screw, one end of each of the two lead screws extends out of each of the moving grooves and is fixedly connected with a belt pulley, the belt pulleys are connected through belts, the lead screw is connected with the moving block, a first movable seat and a second movable seat are fixedly installed at the top of the moving block and the bottom of the top plate respectively, and the first movable seat is connected with the second movable seat through a connecting plate.

Preferably, the screw rod is in threaded connection with the moving block, and the screw rod is a bidirectional threaded screw rod.

Preferably, the driving assembly comprises a first electric push rod, a gear, a long plate, second teeth, first teeth, a gear ring, helical teeth and a helical gear, the first electric push rod is arranged on the top plate and connected with the long plate to drive the long plate to move in the vertical direction, the gear is fixedly connected to the bottom plate, the second teeth meshed with the gear are arranged on the long plate, the gear is connected with the helical gear, the first teeth are arranged on the lower portion of the upright post, the gear ring meshed with the first teeth is rotatably mounted at the top of the bottom plate, the helical teeth are arranged on the outer side of the gear ring, the helical gear is meshed with the helical teeth, and the upright post is driven to rotate by the vertical movement of the long plate.

Preferably, the outside fixed mounting of roof has with the connecting rod that the railing corresponds, the connecting rod is kept away from the one end of roof is connected the drive block, the inside of drive block is equipped with the passageway with external intercommunication, one side of drive block is equipped with the closing plate, the diapire of passageway is close to closing plate department fixed mounting has the limiting plate, clapper corotation drives the closing plate with the limiting plate offsets, makes drive block one side is the cambered surface.

Preferably, the outside fixed mounting of connecting rod has the arc, the inside of arc is equipped with the cavity, at least one side of arc seted up with the opening of cavity intercommunication, fixed mounting has the partition panel in the cavity, cavity slidable mounting has the extension board, the extension board is close to one side fixed mounting of partition panel has the ejector pin, the outside of arc is equipped with the promotion the extrusion subassembly that the ejector pin removed.

Preferably, the extrusion assembly comprises a triangular block, a side slope of the triangular block is abutted to the ejector rod, a disc is fixedly connected to the bottom surface of the triangular block through a long rod, and the top plate rotates to drive the disc to move horizontally, so that the extension plate can extend outwards to be connected with the arc plate.

Preferably, a spring is sleeved outside the top rod, two ends of the spring are fixedly connected with the partition plate and the extension plate respectively, and the spring constantly provides elastic force for pulling the extension plate back to the inclined plane of the triangular block.

Preferably, the railing is provided with a receiving groove for receiving the clapper and the pointed cone block.

Preferably, the portable hoisting apparatus of small-size electric power fortune dimension still is equipped with spacing subassembly, spacing subassembly includes the fixed plate of fixed mounting at the bottom plate top, the outside fixed mounting of fixed plate has second electric putter, second electric putter keeps away from the one end fixed mounting of fixed plate has the rectangle fixture block, the outside of gear seted up with rectangle fixture block complex rectangle draw-in groove.

Compared with the prior art, the invention has the beneficial effects that:

according to the embodiment of the invention, the first electric push rod is arranged to drive the long plate to move upwards so as to drive the stand column to rotate forwards, the stand column rotates forwards to drive the clapper to rotate, when the clapper rotates to be separated from the driving block, the clapper claps ice on the support plate, the sharp cone block smashes the ice on the support plate, after the crushed ice is over, the long plate can be driven by the first electric device to move downwards so as to rapidly rotate backwards, the stand column rotates backwards, the crushed ice is thrown outwards, the extrusion assembly extrudes the extension plate connected with the arc-shaped plate when the crushed ice is thrown outwards, the extension plate is connected with the arc-shaped plate so as to block the crushed ice, the phenomenon that the crushed ice is thrown far away to hurt people is avoided, and after the crushed ice is cleared, the extension plate can automatically reset, so that a gap is reserved between the arc-shaped plates, and a user can conveniently board.

Drawings

Fig. 1 shows a first structural diagram of a small-sized electric operation and maintenance mobile lifting device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram ii of a small-sized electric operation and maintenance mobile lifting device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram three of the small-sized electric operation and maintenance mobile lifting device according to the embodiment of the present invention;

FIG. 4 shows an enlarged schematic view at A in FIG. 3 of an embodiment of the present invention;

FIG. 5 shows a schematic structural view of a lift assembly in accordance with an embodiment of the present invention;

fig. 6 shows a fourth schematic structural diagram of the small-sized electric operation and maintenance mobile lifting device according to the embodiment of the invention;

FIG. 7 shows an enlarged structural view at B in FIG. 6 according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a small-sized electric operation and maintenance mobile lifting device according to an embodiment of the present invention;

FIG. 9 is an enlarged schematic view at C in FIG. 8 illustrating an embodiment of the present invention;

fig. 10 is a schematic cross-sectional view of a small-sized mobile electric operation and maintenance lifting device according to an embodiment of the present invention.

Illustration of the drawings: 1. a base plate; 2. a top plate; 3. a column; 4. a rectangular fixture block; 5. a toothed ring; 6. a helical gear; 7. a gear; 8. a first electric push rod; 9. a carrier plate; 10. a railing; 11. clapping the board; 12. a first torsion spring; 13. a tapered block; 14. a connecting rod; 15. a drive block; 16. a long plate; 17. a second tooth; 18. a screw rod; 19. a motor; 20. a moving block; 21. a movable seat; 22. a belt; 23. an arc-shaped plate; 24. an extension plate; 25. a top rod; 26. a triangular block; 27. a disc; 28. a second electric push rod; 29. a closing plate; 30. and a limiting plate.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the small-sized electric power operation and maintenance mobile lifting apparatus of the present embodiment includes a bottom plate 1, a top plate 2 is connected to the top of the bottom plate 1 through a lifting assembly, the top plate 2 is rotatably installed with a column 3, the column 3 is connected to a driving assembly, a support plate 9 is fixedly installed at the top of the column 3, a rail 10 is fixedly installed on the support plate 9, a movable opening is opened in the rail 10, a rotating shaft is rotatably installed at the movable opening, a flap 11 is fixedly sleeved outside the rotating shaft, one end of the rotating shaft extends out of the movable opening and is fixedly connected to the rail 10 through a first torsion spring 12, a pointed cone block 13 for removing ice blocks is disposed inside the flap 11, the top plate 2 is fixedly connected to a plurality of driving blocks 15 which are distributed at intervals, and when the flap 11 abuts against the driving blocks 15, the flap 11 is perpendicular to the driving blocks 15; when the clapper 11 rotates to be separated from the driving block 15, the first torsion spring 12 drives the clapper 11 to rotate to the plane of the carrier plate 9 (i.e. the clapper 11 is switched from the vertical state to the horizontal state), and the clapper 11 drives the pointed cone block 13 to synchronously rotate to the plane of the carrier plate 9, so that the clapper 11 beats the ice on the carrier plate 9, and the pointed cone block 13 beats the ice on the carrier plate 9.

It should be noted that, when the ice crusher is used, the top plate 2 is lifted by the lifting assembly, the driving assembly drives the upright post 3 to rotate, when the driving assembly drives the upright post 3 to rotate forwards, the support plate 9 on the upright post 3 and the clapper 11 connected with the support plate 9 rotate, when the clapper 11 rotates to be separated from the driving block 15, the deformed first torsion spring 12 releases acting force to drive the rotating shaft, the clapper 11 and the pointed cone 13 to synchronously rotate to the plane where the support plate 9 is located, finally, the pointed cone 13 collides with the top of the support plate 9 to crush the ice condensed on the top of the support plate 9, and along with the continuous rotation of the clapper 11, the clapper 11 abuts against the driving block 15, so as to drive the pointed cone 13 to reset; when the driving assembly drives the upright post 3 to rotate reversely, the clapper 11 is separated from the driving block 15, the clapper 11 does not abut against the driving block 15, the clapper 11 moves smoothly, and the carrier plate 9 can rotate rapidly, so that crushed ice is thrown outwards, and the crushed ice at the top of the carrier plate 9 is cleaned.

Specifically, please refer to fig. 2 and 5, the lifting assembly includes a lead screw 18, a moving slot is symmetrically formed in the top of the bottom plate 1, the lead screw 18 is rotatably installed in the moving slot, a motor 19 is fixedly installed on the bottom plate 1, an output end of the motor 19 extends into the moving slot and is fixedly connected with the lead screw 18, one ends of the two lead screws 18 respectively extend to the outside of the moving slot and are respectively and fixedly connected with a belt 22 wheel, the belt 22 wheels are connected through a belt 22, the lead screw 18 is connected with a moving block 20, the top of the moving block 20 and the bottom of the top plate 2 are respectively and fixedly installed with a first moving seat 21 and a second moving seat 21, and the first moving seat 21 is connected with the second moving seat 21 through a connecting plate.

More specifically, the lead screw 18 is in threaded connection with the moving block 20, and the lead screw 18 is a bidirectional threaded lead screw 18.

Illustratively, the embodiment of the invention is provided with a motor 19, an output end of the motor 19 is connected with a screw rod 18, when the motor 19 is started, an output shaft of the motor 19 rotates forward to drive the connected screw rod 18 to rotate, the thread directions of two sides of the screw rod 18 are opposite, the screw rod 18 can drive another screw rod 18 to rotate through a belt 22 wheel and a belt 22, the two screw rods 18 rotate simultaneously, the screw rod 18 drives two moving blocks 20 on the surface of the screw rod to move close to each other, and the movable seat 21 and the connecting plate are matched to drive the top plate 2 to ascend to realize the lifting of the top plate 2, otherwise, the motor 19 can be started to drive the output shaft of the top plate to rotate reversely, so that the descending of the top plate 2 can be realized.

Specifically, please refer to fig. 2, fig. 3 and fig. 4, the driving assembly includes a first electric push rod 8, a gear 7, a long plate 16, a second tooth 17, a first tooth, a gear ring 5, helical teeth and a helical gear 6, the first electric push rod 8 is disposed on the top plate 2 and connected to the long plate 16 to drive the long plate 16 to move along a vertical direction, the gear 7 is fixedly connected to the bottom plate 1, the second tooth 17 engaged with the gear 7 is disposed on the long plate 16, the gear 7 is connected to the helical gear 6, the first tooth is disposed on the lower portion of the column 3, the gear ring 5 engaged with the first tooth is rotatably disposed on the top of the bottom plate 1, the helical gear 6 is engaged with the helical teeth, and the column 3 is driven to rotate by the vertical movement of the long plate 16.

It should be noted that in the embodiment of the present invention, the first electric push rod 8 drives the long plate 16 to move up and down, when the first electric push rod drives the long plate 16 to move up, the gear 7 engaged with the second teeth 17 arranged on the long plate 16 rotates forward, so as to drive the helical gear 6 to rotate therewith, the helical gear engaged with the helical gear 6 rotates to drive the upright post 3 to rotate forward, when the first electric push rod drives the long plate 16 to move down, the gear 7 engaged with the second teeth 17 arranged on the long plate 16 rotates backward, so as to drive the helical gear 6 to rotate therewith, and the helical gear engaged with the helical gear 6 rotates to drive the upright post 3 to rotate backward.

Specifically, referring to fig. 1 and 9, a connecting rod 14 corresponding to the balustrade 10 is fixedly mounted on the outer side of the top plate 2, one end of the connecting rod 14, which is far away from the top plate 2, is connected to a driving block 15, a channel communicated with the outside is arranged inside the driving block 15, a closing plate 29 is arranged on one side of the driving block 15, a limiting plate 30 is fixedly mounted on the bottom wall of the channel, which is close to the closing plate 29, and the clapper 11 rotates forward to drive the closing plate 29 to abut against the limiting plate 30, so that one side of the driving block 15 is an arc surface.

The closing plate 29 of the embodiment of the invention is arranged at the right end of the driving block 15, the closing plate 29 can swing, the closing plate 29 is driven to rotate to be abutted against the limit plate 30 when the clapper 11 rotates forwards, so that the closing plate 29 can not move continuously, when the clapper 11 rotates to abut against the closing plate 29, the clapper 11 is converted from the horizontal state to the vertical state, and enters into the driving block 15 to abut against the driving block 15, and continues to rotate to a position between the two driving blocks 15, the clapper 11 is separated from the driving block 15, the clapper 11 is converted into a horizontal state from a vertical state by the first torsion spring 12, the clapper 11 is in the same plane with the carrier plate 9 and slaps the ice on the carrier plate 9, the pointed cone block 13 can crush the ice on the clapper 11, on the contrary, when the clapper 11 rotates reversely, the clapper 11 penetrates through the passage to jack the closing plate 29 open to open the passage, so as to ensure the clapper 11 to pass through smoothly, and the carrier plate 9 rotates at a high speed to throw out the ice on the carrier plate 9.

Specifically, please refer to fig. 6 and 7, an arc plate 23 is fixedly mounted on an outer side of the connecting rod 14, a cavity is disposed inside the arc plate 23, an opening communicated with the cavity is formed in at least one side of the arc plate 23, a partition plate is fixedly mounted in the cavity, an extension plate 24 is slidably mounted in the cavity, a push rod 25 is fixedly mounted on one side of the extension plate 24 close to the partition plate, and an extrusion assembly for pushing the push rod 25 to move is disposed on an outer side of the arc plate 23.

More specifically, the extrusion subassembly includes triangle piece 26, and the incline of triangle piece 26 offsets with ejector pin 25, and the bottom surface of triangle piece 26 passes through stock fixedly connected with disc 27, and the rotatory disc 27 horizontal migration that drives of roof 2 to make extension plate 24 can outwards extend and meet with arc 23.

More specifically, the outside cover of ejector pin 25 is equipped with the spring, and the both ends of spring respectively with partition panel and extension board 24 fixed connection, the spring constantly provides the elasticity that draws extension board 24 back to the triangle piece 26 inclined plane.

Illustratively, in order to avoid hurting people when the carrier plate 9 is thrown out at high speed, the embodiment of the invention installs the connecting rods 14 around the top plate 2, one end of the connecting rod 14 far away from the top plate 2 is connected with the arc-shaped plate 23, the outer side of the arc-shaped plate 23 is provided with the extrusion component for pushing the ejector rods 25 to move, when the carrier plate 9 is rapidly reversed, the extrusion component is driven by generating centrifugal force to extrude the ejector rods 25 so as to enable the pair of ejector rods 25 to move far away from each other, the ejector rods 25 drive the extension plates 24 to move and simultaneously pull the springs to deform the springs to generate acting force, so that the extension plates 24 and the adjacent extension plates 24 can be unfolded to seal the gap between the two adjacent arc-shaped plates 23, crushed ice can be thrown outwards along with the rotation of the carrier plate 9, the whole formed by matching the arc-shaped plates 23 and the extension plates 24 can block the crushed ice to avoid hurting people too far, when the crushed ice stops moving and the centrifugal force disappears, the spring releases the acting force to drive the extension plate 24 and the mandril 25 to reset so as to be retracted into the arc-shaped plates 23, and a gap is reserved between the arc-shaped plates 23, so that a user can conveniently board the carrier plate 9.

Specifically, referring to fig. 8 and 10, in order to store the clapper 11 and the pointed cone block 13, the rail 10 of the present invention is provided with a receiving groove for receiving the clapper 11 and the pointed cone block 13.

Specifically, please refer to fig. 10, a limiting assembly is further provided, the limiting assembly includes a fixing plate fixedly mounted on the top of the bottom plate 1, a second electric push rod 28 is fixedly mounted on the outer side of the fixing plate, a rectangular fixture block 4 is fixedly mounted on one end of the second electric push rod 28 far away from the fixing plate, and a rectangular slot matched with the rectangular fixture block 4 is formed in the outer side of the gear 7.

With reference to fig. 1-10, in the embodiment of the invention, the first electric push rod is arranged to drive the long plate to move upwards, so as to drive the upright post to rotate forwards, the flap plate drives the flap plate to rotate, when the flap plate rotates to be separated from the driving block, the flap plate flaps ice on the support plate, the sharp cone block breaks the ice on the support plate, after the broken ice is over, the first electric device can drive the long plate to move downwards, so that the upright post rotates backwards rapidly, the broken ice is thrown outwards, the extrusion assembly extrudes the extension plate connected with the arc-shaped plate when the broken ice is thrown outwards, so that the extension plate is connected with the arc-shaped plate, the broken ice is blocked, the broken ice is prevented from hurting people too far, and after the broken ice is cleared, the extension plate can automatically reset, so that a gap is left between the arc-shaped plates, and a user can conveniently get on the support plate.

Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a portable hoisting apparatus of small-size electric power operation and maintenance which characterized in that: the ice cube removing machine comprises a bottom plate, wherein the top of the bottom plate is connected with a top plate through a lifting assembly, the top plate is rotatably provided with a stand column, the stand column is connected with a driving assembly, the top of the stand column is fixedly provided with a support plate, a railing is fixedly arranged on the support plate, the railing is provided with a movable opening, the movable opening is rotatably provided with a rotating shaft, a clapper is fixedly sleeved outside the rotating shaft, one end of the rotating shaft extends out of the movable opening and is fixedly connected with the railing through a first torsion spring, the inner side of the clapper is provided with a pointed cone block used for removing ice cubes, the top plate is fixedly connected with a plurality of driving blocks distributed at intervals, and when the clapper abuts against the driving blocks, the clapper is perpendicular to the driving blocks; when the clapper rotates to be separated from the driving block, the first torsion spring drives the clapper to rotate to the plane of the support plate, and the clapper drives the pointed cone block to synchronously rotate to the plane of the support plate, so that the clapper can clap ice on the support plate and the pointed cone block can break the ice on the support plate.

2. The small-sized electric operation and maintenance mobile lifting device according to claim 1, wherein: the lifting assembly comprises a screw rod, moving grooves are symmetrically formed in the top of the base plate, the screw rod is rotatably installed in the moving grooves, a motor is fixedly installed on the base plate, the output end of the motor extends into the moving grooves and is fixedly connected with the screw rod, two ends of the screw rod extend to belt pulleys fixedly connected with the outer portions of the moving grooves respectively, the belt pulleys are connected through belts, the screw rod is connected with moving blocks, a first movable seat and a second movable seat are fixedly installed at the top of each moving block and the bottom of the top plate respectively, and the first movable seats are connected with the second movable seats through connecting plates.

3. The small-sized electric operation and maintenance mobile lifting device according to claim 2, wherein: the screw rod is in threaded connection with the moving block, and the screw rod is a bidirectional threaded screw rod.

4. The small-sized electric operation and maintenance mobile lifting device according to claim 1, wherein: the driving assembly comprises a first electric push rod, a gear, a long plate, second teeth, first teeth, a toothed ring, helical teeth and a helical gear, the first electric push rod is arranged on the top plate and connected with the long plate to drive the long plate to move along the vertical direction, the gear is fixedly connected to the bottom plate, the second teeth meshed with the gear are arranged on the long plate, the gear is connected with the helical gear, the first teeth are arranged on the lower portion of the stand column, the toothed ring meshed with the first teeth is installed on the top of the bottom plate in a rotating mode, the helical teeth are arranged on the outer side of the toothed ring, the helical gear is meshed with the helical teeth, and the stand column rotates when the long plate vertically moves.

5. The small-sized electric operation and maintenance mobile lifting device according to claim 1, wherein: the outer side of the top plate is fixedly provided with a connecting rod corresponding to the railing, one end of the top plate is far away from the connecting rod and is connected with the driving block, a channel communicated with the outside is arranged inside the driving block, a closing plate is arranged on one side of the driving block, a limiting plate is fixedly arranged at the position, close to the closing plate, of the bottom wall of the channel, the clapper positively rotates to drive the closing plate to abut against the limiting plate, and therefore one side of the driving block is a cambered surface.

6. The small-sized electric operation and maintenance mobile lifting device according to claim 5, wherein: the outside fixed mounting of connecting rod has the arc, the inside of arc is equipped with the cavity, at least one side of arc seted up with the opening of cavity intercommunication, fixed mounting has the partition panel in the cavity, cavity slidable mounting has the extension board, the extension board is close to one side fixed mounting of partition panel has the ejector pin, the outside of arc is equipped with the promotion the extrusion subassembly that the ejector pin removed.

7. The small-sized electric power operation and maintenance mobile lifting device according to claim 6, wherein: the extrusion assembly comprises a triangular block, the side inclined plane of the triangular block is abutted to the ejector rod, the bottom surface of the triangular block is fixedly connected with a disc through a long rod, and the top plate rotates to drive the disc to move horizontally, so that the extension plate can extend outwards and is connected with the arc plate.

8. The small-sized electric operation and maintenance mobile lifting device according to claim 7, wherein: the outer portion of the ejector rod is sleeved with a spring, two ends of the spring are fixedly connected with the partition plate and the extension plate respectively, and the spring constantly provides elastic force for pulling the extension plate back to the inclined surface of the triangular block.

9. The small-sized electric operation and maintenance mobile lifting device according to claim 1, wherein: the railing is provided with an accommodating groove, and the accommodating groove is used for accommodating the clapper and the pointed cone block.

10. The small-sized electric power operation and maintenance mobile lifting device as claimed in claim 4, wherein: still be equipped with spacing subassembly, spacing subassembly includes the fixed plate of fixed mounting at the bottom plate top, the outside fixed mounting of fixed plate has second electric putter, second electric putter keeps away from the one end fixed mounting of fixed plate has the rectangle fixture block, the outside of gear seted up with rectangle fixture block complex rectangle draw-in groove.