CN114684741B - Safety protection type lifting machine - Google Patents

Safety protection type lifting machine Download PDF

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Publication number
CN114684741B
CN114684741B CN202210418993.9A CN202210418993A CN114684741B CN 114684741 B CN114684741 B CN 114684741B CN 202210418993 A CN202210418993 A CN 202210418993A CN 114684741 B CN114684741 B CN 114684741B
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China
Prior art keywords
wall
cavity
fixed
rod
pull rope
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CN202210418993.9A
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CN114684741A (en
Inventor
周炎
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Nantong Tongzhou Ji'an Construction Machinery Co ltd
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Nantong Tongzhou Ji'an Construction Machinery Co ltd
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Publication of CN114684741A publication Critical patent/CN114684741A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/02—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/02—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by suction means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/02—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by suction means
    • B66C1/0237—Multiple lifting units; More than one suction area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
    • B66C13/063—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads electrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

The invention discloses a safety protection type elevator which comprises a rack, wherein a winch is fixed on the top wall of the rack, and a stabilizing mechanism is arranged on a winding drum of the winch; the stabilizing mechanism comprises a plurality of pull ropes wound on a winch drum, the inner wall of each pull rope is provided with a cavity, the inner wall of each cavity is symmetrically provided with a plurality of groove bodies I, a plurality of elastic empty bags are connected in the cavity in a sliding mode, electrorheological fluid is filled in each elastic empty bag, the electrorheological fluid in each two adjacent elastic empty bags is electrically connected through a one-way diode, and the top wall of the rack is provided with a plurality of lifting holes. When the pull rope moves downwards, the electrorheological fluid is changed from a liquid state to a solid state, so that a plurality of elastic empty bags form a mutually connected connecting rod type structure, the characteristic of softness of the pull rope is changed, the pull rope is not easily disturbed by wind to generate swing, the stability of the pull rope is increased, the safety of the machine is further improved, and the state is automatically released when the pull rope moves upwards for winding.

Description

Safety protection type lifting machine
Technical Field
The invention relates to the technical field of elevators, in particular to a safety protection type elevator.
Background
The hoist is mechanical equipment for transportation by changing potential energy, such as a mine hoist, a dam-crossing hoist and the like, and the hoist generally refers to large mechanical equipment with high power and high lifting capacity.
At present when upwards carrying the material (like panel), often need be with the help of miniature lifting machine, small-size lifting machine often is comparatively simple because of the structure, in the in-process that material (like panel) that needs to promote promotes, soft stay cord drives the material that needs to promote and has the potential safety hazard of rocking under the influence of wind-force, and present lifting machine needs the manual work to fix the centre gripping with the help of the instrument to material (like panel), increase the labour, influence the efficiency of promotion, if stay cord fracture or equipment lose power, present lifting machine also is difficult to play better effect of preventing weighing down.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a safety protection type elevator.
In order to achieve the purpose, the invention adopts the following technical scheme:
a safety protection type elevator comprises a frame, wherein a winch is fixed on the top wall of the frame, and a stabilizing mechanism is arranged on a winding drum of the winch;
the stabilizing mechanism comprises a plurality of pull ropes wound on a winding drum of the winch, the inner wall of each pull rope is provided with a cavity, the inner wall of each cavity is symmetrically provided with a plurality of groove bodies I, a plurality of elastic empty bags are connected in the cavity in a sliding manner, electrorheological fluid is filled in each elastic empty bag, the electrorheological fluid in every two adjacent elastic empty bags is electrically connected through a one-way diode, the top wall of the rack is provided with a plurality of lifting holes, the pull ropes are connected in one corresponding lifting hole in a sliding manner, a conducting strip is fixed on the inner wall of each lifting hole, a soft conducting strip is fixed on the side wall of each pull rope, the inner wall of each soft conducting strip is divided into a plurality of sections through a plurality of insulating blocks embedded uniformly, each section of soft conducting strip is electrically connected with one adjacent elastic empty bag in the cavity, the top wall of each elastic empty bag is provided with a groove body II, the bottom wall of each elastic empty bag is fixed with an inserting block I, the side wall of each elastic empty bag is symmetrically fixed with a plurality of inserting blocks II, and the bottom wall of each pull rope is jointly fixed with a lifting mechanism for pulling the plate.
Further, hoist mechanism includes the diaphragm with stranded stay cord fixed connection, the diaphragm inner wall is fixed with first pole, frame inner wall sliding connection has the shape-reversing piece, first cavity has been seted up to the shape-reversing piece inner wall, first pole runs through sliding connection at first cavity inner wall, first pole lateral wall is fixed with the slider, the slider passes through first spring and first cavity inner wall elastic connection, the sealed sliding connection of slider is in first cavity.
Further, hoist mechanism still includes the limiting plate of symmetry fixed connection at the frame inside wall, the limiting plate lateral wall is fixed with a plurality of first wedge along vertical direction equipartition, the spout has been seted up to U-shaped piece bottom inner wall symmetry, sliding connection has the second wedge in the spout, U-shaped piece bottom symmetry is fixed with rotatory frame, rotatory frame internal rotation is connected with the L-shaped plate, the one end and the first pole of L-shaped plate rotate to be connected, the one end that first pole was kept away from to the L-shaped plate rotates with a corresponding second wedge and connects.
Further, stabilizing mechanism still includes the bracing piece of symmetry fixed connection in U-shaped piece bottom, the bracing piece bottom mounting has puts the thing board, the bracing piece lateral wall is fixed with the horizontal plate jointly, the symmetry is fixed with the drum on the horizontal plate, the drum inner wall has the second pole through second spring elastic connection, the one end that the drum was kept away from to the second pole is fixed with the baffle, the baffle is made by elastic material.
Further, the second rod is connected in the cylinder in a sealing and sliding mode, a plurality of suckers are symmetrically arranged on the side wall of the object placing plate, the suckers are fixedly communicated with the inner wall of the bottom of the first cavity through the air inlet and exhaust pipe, and the cylinder is fixedly communicated with the inner wall of the top of the first cavity through the air inlet pipe.
Furthermore, a plurality of ventilation holes are formed in the inner wall of the first cavity, electronic control valves are arranged in the exhaust pipe, the air inlet pipe and the ventilation holes, through grooves are symmetrically formed in the inner wall of the U-shaped block, and the limiting plates are connected in the through grooves in a sliding mode.
Further, the frame is U-shaped structure, is fixed with acceleration sensor on the U-shaped piece, acceleration sensor and electronic control valve electric connection.
The invention has the following advantages:
1. when the pull rope moves downwards, the electrorheological fluid is changed from a liquid state to a solid state, so that a plurality of elastic empty bags form a mutually connected connecting rod type structure, the characteristic of softness of the pull rope is changed, the pull rope is not easily disturbed by wind to swing, the stability of the pull rope is increased when the pull rope is pulled to lift, the safety of the machine in the lifting process is further improved, and the state is automatically relieved when the pull rope moves upwards to wind;
2. in the lifting process, on one hand, the sliding block extrudes the gas in the first cavity into the cylinder, so that the gas pushes the second rod and the baffle to move downwards until the second rod and the baffle are attracted to the sucking disc, and on the other hand, the suction pipe continuously pumps negative pressure until the sucking disc and the side wall of the baffle are firmly attracted to finish fixed clamping of the plate;
3. if the stay cord produces the fracture or when the hoist engine lost power, acceleration sensor received the signal and began work this moment, and under the electronic control valve effect, sucking disc and baffle do not receive the interference, and simultaneously, under the spring action of first spring, the slider will drive first pole downstream, drives second wedge and first wedge counterbalance contact through the L-shaped plate, and then carries on spacingly to the U shape piece that falls of gliding fast, prevents to fall the U shape piece, puts thing board and panel and tenesmus, plays better guard action.
Drawings
Fig. 1 is a schematic structural diagram of a safety protection type elevator according to the present invention;
fig. 2 is a schematic structural diagram of the inside of a pull rope in a safety protection type elevator according to the present invention;
FIG. 3 is an enlarged view of the structure of part A in FIG. 2;
fig. 4 is a schematic structural diagram of the interior of a cylinder of a safety protection type elevator according to the present invention.
In the figure: 1 frame, 201 pull rope, 202 cavity, 203 elastic empty bag, 204 electrorheological fluid, 205 insert block I, 206 insert block II, 207 groove body I, 208 lifting hole, 209 conducting strip, 210 insulating block, 211 groove body II, 212 soft conducting strip, 3 windlass, 301 transverse plate, 302 inverted U-shaped block, 303 first cavity, 304 first spring, 305 sliding block, 306 first rod, 307 rotating frame, 308L-shaped plate, 309 sliding groove, 310 second wedge-shaped block, 311 limiting plate, 312 first wedge-shaped block, 313 through groove, 401 supporting rod, 402 horizontal plate, 403 cylinder, 404 second spring, 405 second rod, 406 baffle, 407 placing plate, 408 suction cup, 409 exhaust tube, 410 intake tube, 5 acceleration sensor.
Detailed Description
Referring to fig. 1-4, a safety protection type hoister comprises a frame 1, wherein a winch 3 is fixed on the top wall of the frame 1, and a stabilizing mechanism is arranged on a winding drum of the winch 3;
stabilizing mean is including establishing stranded stay cord 201 on 3 reels of hoist engine around, cavity 202 has been seted up to stay cord 201 inner wall, cavity 202 inner wall symmetry has seted up a plurality of cell bodies I207, sliding connection has a plurality of elasticity empty bags 203 in cavity 202, the intussuseption of elasticity empty bag 203 is filled with electrorheological fluid 204, electrorheological fluid 204 in two adjacent elasticity empty bags 203 all passes through one-way diode electric connection, a plurality of promotion holes 208 have been seted up to frame 1 top wall, stay cord 201 sliding connection is in a promotion hole 208 that corresponds, promotion hole 208 inner wall is fixed with conducting strip 209, stay cord 201 lateral wall is fixed with soft conducting strip 212, soft conducting strip 212 inner wall is divided into a plurality of sections through a plurality of collets 210 that the equipartition was inlayed and is established, every section soft conducting strip 212 and an adjacent elasticity empty bag 203 intracavity electric connection, cell body II211 has been seted up to elasticity empty bag top wall 203 bottom wall, elasticity empty bag 203 is fixed with inserts piece I205, elasticity empty bag 203 lateral wall symmetry is fixed with a plurality of blocks II206, 201 bottom wall is fixed with the stay cord jointly and carries out towed hoist mechanism, soft conducting strip 212 can insert the straight with the butt joint along with stay cord 201.
The lifting mechanism comprises a transverse plate 301 fixedly connected with a plurality of pull ropes 201, a first rod 306 is fixed on the inner wall of the transverse plate 301, an inverted U-shaped block 302 is connected on the inner wall of the frame 1 in a sliding manner, a first cavity 303 is formed in the inner wall of the inverted U-shaped block 302, the first rod 306 is connected on the inner wall of the first cavity 303 in a penetrating and sliding manner, a sliding block 305 is fixed on the side wall of the first rod 306, the sliding block 305 is elastically connected with the inner wall of the first cavity 303 through a first spring 304, and the sliding block 305 is connected in the first cavity 303 in a sealing and sliding manner.
The lifting mechanism further comprises a limiting plate 311 which is symmetrically and fixedly connected to the inner side wall of the rack 1, a plurality of first wedge-shaped blocks 312 are uniformly distributed and fixed on the side wall of the limiting plate 311 in the vertical direction, sliding grooves 309 are symmetrically formed in the inner wall of the bottom of the U-shaped block 302, second wedge-shaped blocks 310 are slidably connected in the sliding grooves 309, rotating frames 307 are symmetrically fixed on the bottom of the U-shaped block 302, an L-shaped plate 308 is rotationally connected in the rotating frames 307, one end of the L-shaped plate 308 is rotationally connected with the first rod 306, and one end of the L-shaped plate 308, which is far away from the first rod 306, is rotationally connected with one corresponding second wedge-shaped block 310.
The stabilizing mechanism also comprises a supporting rod 401 symmetrically and fixedly connected to the bottom of the U-shaped block 302, an object placing plate 407 is fixed at the bottom end of the supporting rod 401, a horizontal plate 402 is jointly fixed on the side wall of the supporting rod 401, a cylinder 403 is symmetrically fixed on the horizontal plate 402, a second rod 405 is elastically connected to the inner wall of the cylinder 403 through a second spring 404, a baffle 406 is fixed at one end of the second rod 405 far away from the cylinder 403, and the baffle 406 is made of elastic material.
Second pole 405 sealed sliding connection is in drum 403, and the lateral wall symmetry of putting thing board 407 is equipped with a plurality of sucking discs 408, and sucking disc 408 is through advancing the fixed intercommunication of aspiration tube 409 and first cavity 303 bottom inner wall, and drum 403 passes through intake pipe 410 and the fixed intercommunication of first cavity 303 top inner wall.
A plurality of ventilation holes are formed in the inner wall of the first cavity 303, electronic control valves are arranged in the exhaust pipe 409, the air inlet pipe 410 and the ventilation holes, through grooves 313 are symmetrically formed in the inner wall of the U-shaped block 302, and the limiting plate 311 is connected in the through grooves 313 in a sliding mode.
The frame 1 is in an inverted U-shaped structure, an acceleration sensor 5 is fixed on the inverted U-shaped block 302, and the acceleration sensor 5 is electrically connected with the electronic control valve.
In the invention, a user opens the winch 3 to enable a plurality of strands of pulling ropes 201 wound on a winding drum of the winch 3 to slide downwards from a lifting hole 208, a plurality of elastic empty bags 203 in hollow cavities 202 of the pulling ropes 201 are sequentially connected with an inserting block II206 through a groove body II211, because the inner wall of a soft conductive strip 212 fixed on the side wall of the pulling rope 201 is divided into a plurality of sections through a plurality of insulating blocks 210 which are uniformly embedded, the soft conductive strip 212 is abutted and contacted with a conductive strip 209 on the inner wall of the lifting hole 208 section by section from bottom to top, the bottom ends of the conductive strip 209 and the soft conductive strip 212 are respectively electrically connected with an external power supply anode and a cathode, electrorheological fluids 204 in two adjacent elastic empty bags 203 are electrically connected through a one-way diode, the one-way diode can only conduct current in the direction from top to bottom, each section of soft conductive strip 212 is electrically connected with the cavity of the adjacent elastic empty bag 203, and the pulling rope 201 continuously slides downwards, the electro-rheological fluid 204 in the elastic empty bag 203 below the conducting strip 209 in the lifting hole 208 is electrified, the electro-rheological fluid 204 is a suspension liquid under the normal condition, the liquid-solid conversion can be generated under the action of an electric field, the electro-rheological fluid 204 is converted from the liquid state to the solid state, the volume of the electro-rheological fluid 204 is changed to a certain degree, the elastic empty bag 203 is deformed to ensure that the insertion block II206 is inserted into the groove body I207 arranged on the inner wall of the cavity 202, the connected elastic empty bags 203 are connected and fastened to ensure that the elastic empty bags 203 are fixed in the cavity 202, at the moment, the elastic empty bags 203 below the lifting hole 208 are connected with each other and clamped on the inner wall of the cavity 202, and under the action of the electro-rheological fluid 204, the elastic empty bags 203 form a mutually connected 'connecting rod type' structure, the characteristic of the softness of the pull rope 201 is changed, and the swing caused by the wind body is not easy to disturb, make stay cord 201 when the pulling promotes, increased the stability of stay cord 201, and then improve this machine at the security of lift process.
Meanwhile, when the winch 3 lifts the pull rope 201 upwards, the soft conductive strips 212 and the conductive strips 209 are gradually separated from contact, so that the pull rope 201 passing through the lifting hole 208 is changed from a solid state to a liquid state due to the fact that the electrorheological fluid 204 in the corresponding elastic empty bag 203 is powered off, and the pull rope 201 is convenient to wind on a winding drum of the winch 3.
Place the panel on putting thing board 407, when hoist engine 3 promoted the panel through stranded stay cord 201, stay cord 201 at first will pull diaphragm 301 and first pole 306 upward movement for first pole 306 pulls slider 305 and extrudees first spring 304 and seals up and slide in first cavity 303, and first pole 306 will drive two L-shaped boards 308 and rotate certain angle in revolving frame 307 simultaneously, makes L-shaped board 308 drive two second wedge 310 and move towards each other, makes second wedge 310 and first wedge 312 not produce the counterbalance interference, and then after slider 305 and first cavity 303 cavity counterbalance, first pole 306 drives inverted U-shaped block 302 and upwards promotes in step.
When the sliding block 305 slides upwards in the first cavity 303 in a sealed manner, the gas in the first cavity 303 is extruded into the cylinder 403 through the gas inlet pipe 410, so that the gas pushes the second rod 405 to slide downwards, the second rod 405 drives the baffle 406 to move downwards synchronously until the suction cup 408 and the side wall of the baffle 406 are sucked, meanwhile, the first cavity 303 continuously pumps negative pressure to the suction pipe 409 through the suction pipe 409 until the suction cup 408 and the side wall of the baffle 406 are firmly sucked, so that the plate is fixedly clamped, the baffle 406 is made of an elastic material, a plate body with a larger size can be placed on the object placing plate 407, the baffle 406 generates deformation with an arc structure, and the application range of the machine is enlarged.
When the in-process that promotes to panel, this machine plays and prevents weighing down the effect and lies in: if the pulling rope 201 is broken or the winch 3 loses power, no tension acts on the transverse plate 301, the inverted u-shaped block 302 and the placing plate 407 slide downward quickly, the inverted u-shaped block 302 is always connected inside the rack 1 in a sliding manner, the placing plate 407 can only move vertically downward, and no accidental injury due to shaking occurs, at this time, the acceleration sensor 5 receives a signal to start working, the acceleration sensor 5 is in the prior art, and no further description is given here, so that the electronic control valve in the suction pipe 409 and the air inlet pipe 410 is changed from an open state to a closed state, and the electronic control valve in the air exchange hole is changed from a closed state to an open state, so that the suction cup 408 and the baffle 406 are not interfered by the pulling rope 201, and at the same time, the pulling rope 201 does not provide tension on the transverse plate 301 any more, under the elastic action of the first spring 304, the sliding block 305 drives the first rod 306 to move downward, the second wedge-shaped block 310 is driven by the L-shaped plate 308 to abut against the first wedge-shaped block 312, and further limit the inverted u-shaped block 302 which slides downward quickly, thereby preventing the inverted u-shaped block 302, the placing plate 407, the plate 407 and the plate from dropping down, and the plate from playing a better protection role.

Claims (4)

1. A safety protection type hoister comprises a rack (1) and is characterized in that a winch (3) is fixed on the top wall of the rack (1), and a stabilizing mechanism is arranged on a winding drum of the winch (3);
the stabilizing mechanism comprises a multi-strand pull rope (201) wound on a winding drum of the winch (3), a cavity (202) is formed in the inner wall of the pull rope (201), a plurality of groove bodies I (207) are symmetrically formed in the inner wall of the cavity (202), a plurality of elastic empty bags (203) are connected in the cavity (202) in a sliding way, the elastic empty bags (203) are filled with electrorheological fluid (204), the electrorheological fluid (204) in two adjacent elastic empty bags (203) are electrically connected through a one-way diode, the top wall of the frame (1) is provided with a plurality of lifting holes (208), the pull rope (201) is connected in a corresponding lifting hole (208) in a sliding way, a conducting strip (209) is fixed on the inner wall of the lifting hole (208), a soft conducting strip (212) is fixed on the side wall of the pull rope (201), the inner wall of the soft conductive strip (212) is divided into a plurality of sections by a plurality of insulating blocks (210) which are uniformly embedded, each section of the soft conductive strip (212) is electrically connected with the cavity of the adjacent elastic empty bag (203), the top wall of the elastic hollow bag (203) is provided with a groove body II (211), an inserting block I (205) is fixed on the bottom wall of the elastic empty bag (203), a plurality of inserting blocks II (206) are symmetrically fixed on the side wall of the elastic empty bag (203), the bottom walls of the pull ropes (201) are jointly fixed with a lifting mechanism for pulling the plate;
the lifting mechanism comprises a transverse plate (301) fixedly connected with a multi-strand pulling rope (201), a first rod (306) is fixed on the inner wall of the transverse plate (301), an inverted U-shaped block (302) is connected on the inner wall of the frame (1) in a sliding way, the inner wall of the inverted U-shaped block (302) is provided with a first cavity (303), the first rod (306) is connected with the inner wall of the first cavity (303) in a penetrating and sliding way, a sliding block (305) is fixed on the side wall of the first rod (306), the sliding block (305) is elastically connected with the inner wall of the first cavity (303) through a first spring (304), the sliding block (305) is connected in the first cavity (303) in a sealing and sliding way, the lifting mechanism also comprises limiting plates (311) which are symmetrically and fixedly connected with the inner side wall of the frame (1), a plurality of first wedge-shaped blocks (312) are uniformly distributed and fixed on the side wall of the limiting plate (311) along the vertical direction, the inner wall of the bottom of the inverted U-shaped block (302) is symmetrically provided with sliding grooves (309), a second wedge block (310) is connected in the sliding groove (309) in a sliding way, the bottom of the inverted U-shaped block (302) is symmetrically fixed with a rotating frame (307), an L-shaped plate (308) is rotationally connected in the rotating frame (307), one end of the L-shaped plate (308) is rotatably connected with the first rod (306), one end of the L-shaped plate (308) far away from the first rod (306) is rotatably connected with a corresponding second wedge-shaped block (310);
the stabilizing mechanism further comprises a supporting rod (401) which is symmetrically and fixedly connected to the bottom of the U-shaped block (302), an object placing plate (407) is fixed to the bottom end of the supporting rod (401), a horizontal plate (402) is jointly fixed to the side wall of the supporting rod (401), a cylinder (403) is symmetrically fixed to the horizontal plate (402), a second rod (405) is elastically connected to the inner wall of the cylinder (403) through a second spring (404), a baffle (406) is fixed to one end, far away from the cylinder (403), of the second rod (405), and the baffle (406) is made of elastic materials.
2. The safety protection type lifting machine of claim 1, wherein the second rod (405) is connected in a cylinder (403) in a sealing and sliding manner, a plurality of suction cups (408) are symmetrically arranged on the side wall of the object placing plate (407), the suction cups (408) are fixedly communicated with the inner wall of the bottom of the first cavity (303) through an air inlet and exhaust pipe (409), and the cylinder (403) is fixedly communicated with the inner wall of the top of the first cavity (303) through an air inlet pipe (410).
3. The safety protection type lifting machine of claim 2, wherein a plurality of ventilation holes are formed in the inner wall of the first cavity (303), electronic control valves are arranged in the suction pipe (409), the air inlet pipe (410) and the ventilation holes, through grooves (313) are symmetrically formed in the inner wall of the U-shaped block (302), and the limiting plate (311) is slidably connected in the through grooves (313).
4. The safety protection type hoisting machine of claim 3, wherein the frame (1) is of an inverted U-shaped structure, the U-shaped block (302) is fixed with an acceleration sensor (5), and the acceleration sensor (5) is electrically connected with the electronic control valve.
CN202210418993.9A 2022-04-20 2022-04-20 Safety protection type lifting machine Active CN114684741B (en)

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CN114684741B true CN114684741B (en) 2023-03-14

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CN112645229A (en) * 2020-12-31 2021-04-13 象山广业机械有限公司 Accidental weightlessness-avoiding falling assembly for hoisting of winch

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