CN111533045B

CN111533045B - Floor lifting machine

Info

Publication number: CN111533045B
Application number: CN202010349127.XA
Authority: CN
Inventors: 李晓静
Original assignee: Qingdao Aofu Machinery Co ltd
Current assignee: Qingdao Aofu Machinery Co ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2021-11-23
Anticipated expiration: 2040-04-28
Also published as: CN111533045A

Abstract

The invention discloses a floor lifting machine which is characterized by comprising a base, upright columns vertically fixed at four corners of the base, a lifting plate in sliding connection with the upright columns and a lifting device for driving the lifting plate to lift, wherein the upright columns are provided with protective devices for protecting the lifting plate from lifting; one side of the upright post, which is close to the lifting plate, is provided with a sliding chute, the upright post is provided with a notch, and the protective device is arranged on the notch; a sliding component which slides in the sliding groove is fixed on the side edge of the lifting plate; the protective device comprises a second air cylinder arranged above the notch and a protective block rotatably connected in the notch; one end of the protective block is positioned in the sliding groove, and the other end of the protective block is positioned on the outer side of the upright post. The bottom of one end of the protection block in the chute is provided with an inclined plane; the stand is fixed with the connecting block, and the cylinder body and the connecting block of second cylinder are articulated, and the piston rod of second cylinder is articulated with the one side that the stand was stretched out to the protection piece. The invention has the effect of improving the use safety of the lifter.

Description

Floor lifting machine

Technical Field

The invention relates to the field of lifting machinery, in particular to a floor lifting machine.

Background

The automobile lifter is automobile protection equipment used for lifting automobiles in the automobile maintenance industry, plays an important role in automobile maintenance, and can not be separated no matter whether the whole automobile is overhauled or the small part is overhauled, so that the quality of the product directly influences the maintenance work and the personal safety of maintenance personnel. Floor type lifting machines in the prior art are butted at places such as automobile repair factories and exhibition halls, but in order to facilitate the lifting and the entering and exiting of automobiles in some automobile repair factories or exhibition halls, the positions for receiving the automobiles do not have doors, and the automobiles directly enter target places after being lifted in place, so that the vehicles can conveniently enter and exit in open places.

In the prior art, a Chinese utility model with an authorization bulletin number of CN206955546U discloses a floor lifting machine with a door, which comprises a lifting platform, a lifting beam, a stand column assembly, a base, a rolling door, a shaft, a motor, a control box, a travel switch and a remote controller, wherein the bottom of the lifting platform is fixedly connected to the lifting beam, the lifting beam is connected with the stand column assembly in a sliding way, the base comprises a bottom plate and a vertical plate, the stand column assembly is fixedly connected to the bottom plate, the vertical plate is provided with an inlet and an outlet with the same number of layers as the lifting machine, the rolling door is arranged at the inlet and the outlet of the vertical plate, the travel switch is arranged on the vertical plate at the upper part of each inlet and outlet and the bottom of each inlet and outlet, the shaft is arranged on the vertical plate and connected with the motor, the motor is arranged in the control box, the control box is also provided with a controller, a relay and a remote control receiving module, the controller is electrically connected with the relay, the relay is electrically connected with the motor, the travel switch and the remote control receiving module are respectively electrically connected with the controller, the remote controller comprises a remote control transmitting module and a key circuit.

However, since the floor elevator is not provided with a safety device, when a power source is in trouble during the process of ascending or descending of the lifting plate of the floor elevator, the lifting plate can freely fall, and assembly accidents or equipment damage are easy to happen.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a floor lifting machine, which is characterized in that a safety device is additionally arranged on an upright post of the lifting machine, so that the use safety of the lifting machine is improved.

In order to achieve the purpose, the invention provides the following technical scheme: a floor lifting machine comprises a base, upright columns vertically fixed at four corners of the base, a lifting plate in sliding connection with the upright columns and a lifting device for driving the lifting plate to lift, wherein a protective device for protecting the lifting plate from lifting is arranged on each upright column; one side of the upright post, which is close to the lifting plate, is provided with a sliding chute, the upright post is provided with a notch, and the protective device is arranged on the notch; a sliding component which slides in the sliding groove is fixed on the side edge of the lifting plate; the protective device comprises a second air cylinder arranged above the notch and a protective block rotatably connected in the notch; one end of the protective block is positioned in the sliding groove, and the other end of the protective block is positioned on the outer side of the upright post. The bottom of one end of the protection block in the chute is provided with an inclined plane; the stand is fixed with the connecting block, and the cylinder body and the connecting block of second cylinder are articulated, and the piston rod of second cylinder is articulated with the one side that the stand was stretched out to the protection piece.

By adopting the technical scheme, in the process of lifting the lifting plate, after the lifting plate is abutted to the inclined surface of the protection block, one end of the protection block extending into the chute is driven to rotate upwards, and the lifting of the lifting plate is not influenced; in the descending process, when the lifting plate is about to pass through the protection block, the piston rod of the second cylinder is required to be driven to extend out to drive the protection block to rotate, so that the influence of the stop block on the descending of the lifting plate is prevented; in the process of ascending or descending, if the lifting plate freely falls due to the fault of the lifting device, the lifting plate with the falling stop block can stop, the stroke of the free falling body of the lifting plate is reduced, and the lifting safety of the lifting plate is improved.

The invention is further configured to: the protection device also comprises a travel switch arranged in the sliding groove, and after a piston rod of the second air cylinder extends out, the protection block is abutted against the travel switch; the travel switches are connected in series.

Through adopting above-mentioned technical scheme, at the in-process that the lifter plate descends, if do not carry out sufficient rotation because of certain stopper piece, then can lead to whole lifter plate to take place the slope to cause new potential safety hazard, a plurality of travel switch establish ties each other, and establish ties with the control point storehouse of controlling the lifter plate and descend, only when travel switch all touched the back, the lifter plate just can descend, further increases the security that the lifter plate goes up and down.

The invention is further configured to: the lifter plate is the rectangle, sets up the holding tank of round rectangle on the lifter plate, is provided with the dog that can go up and down and drives the lift piece that the dog goes up and down in the holding tank.

Through adopting above-mentioned technical scheme, the dog blocks the object on the lifter plate, and when the lifter plate was because of unexpected the emergence slope, the dog can block the object on the lifter plate, prevents the landing of object, increases the security of using.

The invention is further configured to: one side of the stop block close to the outer side of the stop block is provided with an arc surface.

Through adopting above-mentioned technical scheme, if the goods is the car, when the holding tank was not placed completely to the dog to the arc surface, on driving the car into the lifter plate, increased the flexibility of using.

The invention is further configured to: the sliding assembly comprises a shell, a fixed sleeve arranged in the shell and a rotating wheel rotationally connected to the fixed sleeve; the fixing sleeve is hollow inside. One side of the rotating wheel close to the fixed sleeve is fixed with a rotating shaft sliding in the fixed sleeve, a second spring is arranged in the fixed sleeve, and the second spring is abutted against the two rotating shafts inserted into the fixed sleeve.

Through adopting above-mentioned technical scheme, when the lifter plate took place to incline, the position of slip subassembly in the spout received the influence, and the spring that is located fixed cover can cushion its deformation, reduces the damage to slip subassembly.

The invention is further configured to: the both sides of casing are seted up and are supplied the gliding rectangular hole of pivot, sliding component still includes the elastic component that drives fixed cover to the motion of being close to the spout direction.

Through adopting above-mentioned technical scheme, the elastic component advances the fine adjustment and cushions the slip subassembly, and the material of being convenient for cooperate expend with heat and contract with cold and the deformation that brings.

The invention is further configured to: the elastic piece is including fixing the slide bar that sheathes in and with casing sliding connection and cup jointing the first spring on the slide bar, the both ends of first spring respectively with fixed cover and casing butt.

Through adopting above-mentioned technical scheme, the spring is with low costs, and the installation of being convenient for is convenient for cushion fixed cover.

In conclusion, the beneficial technical effects of the invention are as follows:

1. in the process of lifting the lifting plate, after the lifting plate is abutted to the inclined surface of the protection block, one end of the protection block extending into the chute is driven to rotate upwards, so that the lifting of the lifting plate is not influenced; in the descending process, when the lifting plate is about to pass through the protection block, the piston rod of the second cylinder is required to be driven to extend out to drive the protection block to rotate, so that the influence of the stop block on the descending of the lifting plate is prevented; in the process of ascending or descending, if the lifting plate falls freely due to the fault of the lifting device, the lifting plate falling by the stop block can be stopped, the stroke of the free falling body of the lifting plate is reduced, and the lifting safety of the lifting plate is improved;

2. in the descending process of the lifting plate, if a certain stop block does not rotate sufficiently, the whole lifting plate can be inclined, so that new potential safety hazards are caused, the travel switches are connected in series and are connected in series with a control point library for controlling the descending of the lifting plate, and the lifting plate can descend only after the travel switches are all touched, so that the ascending and descending safety of the lifting plate is further improved;

3. the dog stops the object on the lifter plate, and when the lifter plate inclines because of the accident, the dog can stop the object on the lifter plate, prevents the landing of object, increases the security of using.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic view of a lifter plate;

FIG. 3 is a schematic structural view of the sliding assembly;

fig. 4 is a cross-sectional view embodying a harness;

FIG. 5 is a schematic diagram of a lift device;

fig. 6 is a schematic structural diagram of a protective device.

In the figure: 1. a base; 2. a column; 21. a chute; 22. a notch; 3. a lifting plate; 31. accommodating grooves; 32. a stopper; 33. a first cylinder; 34. a sliding assembly; 341. a housing; 3411. a strip hole; 342. fixing a sleeve; 3421. a second spring; 343. a rotating wheel; 3431. a rotating shaft; 3432. a blocking block; 3433. a limiting block; 344. a slide bar; 345. a first spring; 35. a steering wheel; 4. a lifting device; 41. a hydraulic cylinder; 42. pulling the frame; 43. a first movable pulley; 44. a second movable pulley; 45. a fixed pulley; 46. a first chain; 47. a second chain; 48. a third chain; 5. a guard; 51. a second cylinder; 511. connecting blocks; 52. a protection block; 521. a bevel; 53. a travel switch.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows: the floor lifting machine comprises a base 1, a stand column 2 vertically fixed at four corners of the base 1, a lifting plate 3 connected with the stand column 2 in a sliding manner, a lifting device 4 driving the lifting plate 3 to lift and a protection device 5 arranged on the stand column 2 and used for protecting the lifting plate 3 safely.

The stand 2 is close to one side of lifter plate 3 and has been seted up and supply the gliding spout 21 of lifter plate 3, and lifter plate 3 can only slide along vertical direction under four spout 21's spacing.

Referring to fig. 2, the lifting plate 3 is rectangular, a circle of rectangular accommodating groove 31 is formed in the lifting plate 3, a stopper 32 is arranged in the accommodating groove 31, and the stopper 32 can lift in the accommodating groove 31. One side of the stopper 32 close to the outside of the stopper 32 is provided with a circular arc surface. The bottom end of the lifting plate 3 is provided with a first cylinder 33 with a cylinder body fixed on the lifting plate 3, and a piston rod of the first cylinder 33 is fixedly connected with the bottom end of the stop block 32 to drive the stop block 32 to ascend or descend. A sliding assembly 34 sliding in the sliding groove 21 is fixed on the side of the lifting plate 3. The two ends of the lifting plate 3 are rotatably connected with the steering wheels 35, the axial direction of the steering wheels 35 is parallel to the length direction of the lifting plate 3, and the number of the steering wheels 35 fixed at one end of the lifting plate 3 is two.

Referring to fig. 3, the sliding assembly 34 includes a housing 341, a fixed sleeve 342 disposed in the housing 341, a rotating wheel 343 rotatably coupled to the fixed sleeve 342, a sliding rod 344 fixed to the fixed sleeve 342 and slidably coupled to the housing 341, and a first spring 345 fitted over the sliding rod 344. Both ends of the first spring 345 are respectively abutted against the fixed sleeve 342 and the housing 341.

The interior of the securing sleeve 343 is hollow. A rotating shaft 3431 sliding in the fixed sleeve 343 is fixed on one side of the rotating wheel 343 close to the fixed sleeve 342, and the axis of the rotating shaft 3431 coincides with the axis of the rotating wheel 343. The inside of the fixing sleeve 342 is provided with a second spring 3421, and the second spring 3421 abuts against the two rotating shafts 3431 inserted into the fixing sleeve 342. A stop block 3433 for preventing the rotation shaft from sliding out of the fixing sleeve 342 is fixed at one end of the rotation shaft 3431 inserted into the fixing sleeve 342. The rotating wheel 343 abuts against the side wall of the upright 2, one end of the rotating wheel 343 close to the rotating shaft 3431 is fixed with a stop block 3432, the stop block 3432 abuts against the side wall of the sliding chute 21, and the distance between the stop blocks 3432 at the two ends of the fixed sleeve 342 is the same as the width of the sliding chute 21. The housing 341 has two long holes 3411 at two sides thereof, and the long holes 3411 are used for the rotation shaft 3431 to slide.

Referring to fig. 1 and 5, the lifting device 4 includes a hydraulic cylinder 41 having a cylinder body fixed to the column 2, a pulling frame 42 fixed to a piston rod of the hydraulic cylinder 41, a first movable pulley 43 and a second movable pulley 44 rotatably connected to the pulling frame 42, a fixed pulley 45 rotatably connected to a top end of the column 2, a first chain 46 engaged with the first movable pulley 43, a second chain 47 engaged with the second movable pulley 44, and a third chain 48 engaged with the steering wheel 35. Wherein, the diverting pulley 35, the first movable pulley 43, the second movable pulley 44 and the fixed pulley 45 are chain wheels matched with a chain. The first chain 46, the second chain 47 and the third chain 48 have the same specification, and are different in the arrangement positions, wherein the number of the third chains 48 is two.

One end of a first chain 46 is fixedly connected with the lifting plate 3, is wound on the first movable pulley 43 after being turned by two fixed pulleys 45 fixed at the top end of the upright post 2, and the other end of the first chain is fixed at the top end of the upright post 2; the second chain 47 works the same. Two third chains 48 are symmetrically arranged on two sides of the base 1, one end of each third chain 48 is fixed on the base 1 and sequentially wound on the two steering wheels 35, and the other end of each third chain 48 is fixed on the top end of the upright post 2. The third chain 48 and the steering wheel 35 play a balancing role, and the lifting stability of the lifting plate 3 is improved.

When the piston rod of the hydraulic cylinder 41 extends or retracts, the distance between the first movable pulley 43 and the fixed pulley 45, which is arranged at the top end of the upright post 2, of the second movable pulley 44 is changed, so that the distance between the first movable pulley 43 (and the fixed pulley 45) and the fixed pulley 45 is changed, and the lifting plate 3 is driven to ascend or descend.

Referring to fig. 1 and 6, the upright post 2 is provided with a notch 22, the protection device 5 is arranged on the notch 22, and the installation heights of the protection devices 5 on different upright posts 2 are the same. The protection device 5 comprises a second cylinder 51 arranged above the notch 22, a protection block 52 rotatably connected in the notch 22 and a travel switch 53 fixed on the inner wall of the chute 21 of the upright 2.

One end of the guard block 52 is located in the slide groove 21 and the other end is located outside the column 2. The bottom of the protection block 52 at one end in the sliding groove 21 is provided with a slope 521. A connecting block 511 is fixed on the upright post 2, the cylinder body of the second cylinder 51 is hinged with the connecting block 511, the piston rod of the second cylinder 51 is hinged with one side of the protective block 52 extending out of the upright post 2, and when the piston rod of the second cylinder 51 retracts, the protective block 52 is in a horizontal state; when the piston rod of the second cylinder 51 is extended, one end of the protection block 52 located in the slide slot 21 moves upward and abuts against a travel switch 53 fixed on the slide slot 21, and the travel switch 53 is touched.

The four travel switches 53 on the four columns 2 are connected in series with each other and connected in series with the descending circuit for controlling the descending of the lifting plate 3, and only when all the protection blocks 52 are in contact with the travel switches 53, the descending circuit for controlling the descending of the lifting plate 3 is triggered to drive the lifting plate 3 to descend.

In the process of rising, the rising lifting plate 3 can be abutted against the protective block 52 and drive the protective block 52 to rotate, and at the moment, the protective block 52 does not influence the rising of the lifting plate 3; in the descending process, the bottom end of the lifting plate 3 is blocked by the protection block 52 and cannot descend continuously, so that in the descending process, the piston rod of the second cylinder 51 needs to be stretched out first to drive the protection block 52 to rotate, and the protection block is prevented from blocking the lifting plate 3 in the descending process.

In order to increase the stopping safety of the lifting plate 3, after the lifting plate 3 is lifted to the target height, the bottom end of the lifting plate 3 is abutted to the protection block 52, so that the placing stability of the lifting plate 3 lifted to the target height is increased, and the overall safety performance of the equipment is increased. If the height of the lifting plate 3 in this state is to be lowered, the height of the lifting plate 3 needs to be raised first, a rotation space is reserved for the rotation of the protection block 52, and after the protection block rotates, the lifting device 4 lowers the height of the lifting plate 3.

Example two: the present embodiment differs from the first embodiment in the number of the shielding devices 5. The upright post 2 is provided with a plurality of gaps 22, and the positions of the gaps 22 arranged on different upright posts 2 are the same. Each indentation 22 is provided with a guard 5. At this time, the protection devices 5 located at different heights can be divided into a plurality of layers, and the lifting plate 3 can be stopped at different heights. The variety of the parking position selection of the lifting plate 3 is increased.

An infrared sensor for detecting the height of the lifting plate 3 is additionally arranged on the upright post 2; four travel switches 53 located at the same height are grouped, the height of the lifting plate 3 is detected by an infrared sensor, and the travel switches 53 at different heights are correspondingly activated.

Example three: the difference between the present embodiment and the first embodiment is that the number of the first chains 46, the second chains 47, and the third chains 48 is different. In this embodiment, the number of the first chains 46, the second chains 47 and the third chains 48 is 2 times of the number of the first chains in the embodiment, and the first chains 46, the second chains 47 and the third chains 48 are arranged side by side, so that the strength of the whole chain is increased.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a floor machine of lifting, includes base (1), vertical fixation stand (2) at four edges of base (1), lifter plate (3) and drive lifter plate (3) the elevating gear (4) that go up and down with stand (2) sliding connection, its characterized in that: the upright post (2) is provided with a protection device (5) for protecting the lifting of the lifting plate (3);

one side of the upright post (2) close to the lifting plate (3) is provided with a sliding groove (21), the upright post (2) is provided with a notch (22), and the protective device (5) is arranged on the notch (22); a sliding component (34) which slides in the sliding groove (21) is fixed on the side edge of the lifting plate (3);

the protection device (5) comprises a second air cylinder (51) arranged above the notch (22) and a protection block (52) rotatably connected in the notch (22); one end of the protective block (52) is positioned in the sliding groove (21), and the other end is positioned on the outer side of the upright post (2); the bottom of the protective block (52) at one end in the sliding groove (21) is provided with an inclined plane (521); a connecting block (511) is fixed on the upright post (2), a cylinder body of the second cylinder (51) is hinged with the connecting block (511), and a piston rod of the second cylinder (51) is hinged with one side, extending out of the upright post (2), of the protection block (52);

the sliding assembly (34) comprises a shell (341), a fixed sleeve (342) arranged in the shell (341) and a rotating wheel (343) rotatably connected to the fixed sleeve (342); the interior of the fixed sleeve (342) is hollow; a rotating shaft (3431) which slides in the fixed sleeve (342) is fixed on one side of the rotating wheel (343) close to the fixed sleeve (342), a second spring (3421) is arranged in the fixed sleeve (342), and the second spring (3421) is abutted against the two rotating shafts (3431) inserted into the fixed sleeve (342);

the sliding assembly comprises a sliding assembly and a sliding component, wherein the sliding assembly further comprises an elastic piece which drives the fixed sleeve (342) to move towards the direction close to the sliding groove (21), the elastic piece comprises a sliding rod (344) which is fixed on the fixed sleeve (342) and is in sliding connection with the shell (341) and a first spring (345) which is sleeved on the sliding rod (344), and two ends of the first spring (345) are respectively abutted against the fixed sleeve (342) and the shell (341);

the protection device (5) further comprises a travel switch (53) arranged in the sliding groove (21), and when a piston rod of the second air cylinder (51) extends out, the protection block (52) is abutted to the travel switch (53); the travel switches (53) are connected in series with each other.

2. A floor lift according to claim 1, wherein: the lifting plate (3) is rectangular, a circle of rectangular accommodating groove (31) is formed in the lifting plate (3), and a stop block (32) capable of lifting and a lifting piece driving the stop block (32) to lift are arranged in the accommodating groove (31).

3. A floor lift according to claim 2, wherein: one side of the stop block (32) close to the outer side of the stop block (32) is provided with an arc surface.