CN115072618A

CN115072618A - Lifting equipment stall protection device for automobile parts machining

Info

Publication number: CN115072618A
Application number: CN202211016234.6A
Authority: CN
Inventors: 李红珍; 吴佳
Original assignee: Hangzhou Danfoss Technology Co ltd
Current assignee: Hangzhou Danfoss Technology Co ltd
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2022-09-20
Anticipated expiration: 2042-08-24
Also published as: CN115072618B

Abstract

The invention discloses a stall protection device of lifting equipment for automobile part processing, which comprises a bottom plate and a top plate, wherein a hinge frame is connected between the bottom plate and the top plate, the hinge frame comprises a hinge shaft, the bottom of the top plate is provided with a liquid storage box filled with hydraulic oil, a piston plate is arranged in the liquid storage box, the piston plate is provided with a plurality of liquid through holes, the piston plate is connected with a speed adjusting mechanism, the speed adjusting mechanism comprises a liquid blocking circular plate, the top plate is connected with an automatic adjusting mechanism, the automatic adjusting mechanism comprises a movable plate and a sliding guide rail, and a secondary speed reduction device is arranged in the hinge shaft. According to the invention, the falling speed of the top plate is slowed down by the hydraulic oil blocking the sliding of the piston plate, the speed adjusting mechanism is connected and matched with the automatic adjusting mechanism, and the circulation of the liquid through hole is changed by adjusting the liquid blocking circular plate, so that the resistance of the oil liquid is adjusted, the falling speed of the top plate is limited according to the weight of the part, and the stalling of the part in the lifting process is avoided.

Description

Lifting equipment stall protection device for automobile parts machining

Technical Field

The invention belongs to the technical field of automobile part machining equipment, and particularly relates to a stall protection device of lifting equipment for automobile part machining.

Background

Automobile parts are used as the basis of automobile industry, are the essential factor that supports the continuous healthy development of automobile industry, and current automobile parts processing generally adopts large-scale mechanical equipment to operate, and the lift is an indispensable instrument that is used for the transportation in the part course of working, but cargo lift is a jack-up lift mechanical equipment, and it can be through artifical button operation to control system, makes the transportation of upper and lower floor of goods accomplish, and cargo lift can divide into according to the type: scissor-fork cargo lifts and rail-mounted cargo lifts.

US patent application No. US17283650 discloses a lifting table and a method of operating and cleaning a lifting table, which invention comprises a platform with a polygonal contour, a lifting mechanism and a base, the lifting mechanism being connected to a table top and comprising an actuator, the table top being provided on both sides with side members, the upper surface of the table top being provided with a switching element, the side members activating the switching element, whereby displacement of the table top relative to the base is prevented. The lifting device for the automobile part processing achieves lifting of the platform above the base through the lifting mechanism, and meanwhile achieves self-cleaning through the side members, but in the using process of the lifting device, if a brake failure or fatigue occurs, the lifting mechanism can fall rapidly, the lifting device is very dangerous, not only can damage placed objects, but also can harm personal safety of workers, and therefore the lifting device for the automobile part processing is provided to solve the problems.

Disclosure of Invention

The invention aims to provide a lifting equipment stall protection device for automobile part processing, which can perform stall falling deceleration buffering on lifting equipment in multiple ways and can automatically adjust deceleration effect.

The technical scheme adopted by the invention for realizing the purpose is as follows:

the utility model provides a jacking equipment stall protection device for auto parts machining, comprising a base plate, the articulated frame that is provided with in bottom plate slidable ground, articulated frame includes two support bodies, two support body intersections are equipped with the articulated shaft that corresponds the set, the bottom plate top is connected with the roof through articulated frame, articulated frame is fixed with the slip roller bearing, the spout that the slip roller bearing passed the roof, the roof bottom is fixed with the stock solution box, the stock solution box intussuseption is filled with hydraulic oil and is provided with the piston plate, the liquid through hole has been laid to piston plate symmetry and interval, the piston plate has two hollow poles through bolt symmetric connection, be connected with the sleeve pipe between the tip that two hollow poles passed the stock solution box, the sleeve pipe cup joints at the slip roller bearing. When the heavy object drives roof and pushes down articulated frame, articulated frame drives the slip roller bearing and slides on the roof, make the sleeve pipe swing and pulling hollow tube slide on the roller bearing that slides, thereby the hydraulic oil in the extrusion cavity of pulling piston plate in the stock solution box, form the moving resistance to the piston plate, hydraulic oil pressurized is through the opposite side of the slow discharge of logical liquid hole to stock solution box simultaneously, avoid the inside pressure of cavity on one side of the moving direction in the stock solution box too big and explode and split, install in the stock solution box of roof bottom and keep away from ground, be favorable to reducing the interference of ground vibrations to stock solution box and piston plate, avoid reducing its life.

Preferably, the piston plate is connected with speed adjustment mechanism, and speed adjustment mechanism includes that the circular slot of symmetry seting up in the piston plate, hollow rod and circular slot intercommunication, rotationally is equipped with in arbitrary circular slot and hinders the liquid plectane, has seted up on arbitrary liquid plectane and has crossed the liquid arc hole, crosses the liquid arc hole and be the through-hole, rotationally is equipped with the damping transfer bar in the hollow rod, and the one end of arbitrary damping transfer bar is fixed in and hinders liquid plectane terminal surface center, and the other end is connected with the handle of kneading dough perpendicularly, and the handle of kneading dough stretches out the cell body of seting up on the hollow rod. Stir through the axial and hold between the fingers the handle and drive the damping and transfer the pole at hollow pole internal rotation, thereby make the circular slot of hindering liquid plectane in the piston plate rotate, make liquid arc hole and the circulation of liquid through hole, and make hydraulic oil can flow through liquid arc hole to the liquid storage box opposite side cavity from the through hole of different quantity according to the turned angle difference, be favorable to adjusting the circulation speed of hydraulic oil according to the part heavy object, it makes the piston plate remove at the excessive speed to avoid the heavy object to promote the roof, lead to part and roof stall tenesmudge to cause the part damage, the damping transfer pole is favorable to keeping its position in hollow pole through the damping characteristic, it receives the vibration influence to make the position change of liquid arc hole to hold between the fingers the handle after avoiding adjusting.

Preferably, the top plate is provided with an automatic adjusting device, the automatic adjusting device comprises a movable plate located above the top plate, pressure springs are distributed between the bottom of the movable plate and the upper bottom surface of the top plate in an array mode, the bottom of the movable plate is provided with a sliding guide rail downwards, a vertical rod body of the sliding guide rail penetrates through a through groove in the bottom of the top plate and can slide up and down, an H-shaped guide frame can be arranged on the sliding guide rail in a sliding mode, two sides of the H-shaped guide frame are symmetrically hinged to be provided with T-shaped rolling shafts, and the non-hinged end of any T-shaped rolling shaft is fixedly connected with a pinching handle close to the T-shaped rolling shaft. The heavier parts are placed on the movable plate, on one hand, the impact vibration at the moment of placing is buffered through a pressure spring arranged at the bottom, the damage and failure caused by excessive vibration of a bottom speed adjusting mechanism and a piston are avoided, on the other hand, the parts are prevented from being worn by the parts and a top plate due to direct contact, the parts press the movable plate to drive the sliding guide rail to move downwards, the H-shaped guide frame slides on the sliding guide rail while moving downwards, the hinged end of the T-shaped rolling shaft is driven to slide in the groove bodies at the two sides of the H-shaped guide frame and generate hinged swing, and the non-hinged end of the T-shaped rolling shaft drives the pinching handle to axially swing, therefore, the liquid blocking circular plate rotates in the piston plate to adjust the speed of liquid flowing through the liquid flowing hole, resistance adjustment on the piston plate is facilitated automatically, the moving-down speed of the top plate is further guaranteed, and the accident that the piston plate moves too fast due to untimely manual adjustment, and the part stalls and falls is avoided.

Preferably, any articulated shaft is connected with a secondary speed reducer, the secondary speed reducer comprises a cavity arranged in the articulated shaft, the cavity is communicated with the end face, close to the inner side, of the articulated shaft, a hose penetrates through the end face, close to one side of the sliding roller, of one side of the articulated shaft, the hose is communicated into a cavity, close to one side of the sliding roller, in the liquid storage box, the friction grooves communicated with the cavity are symmetrically formed in the curved surface of the articulated shaft, a speed reduction friction block is arranged in any friction groove, and a reset spring is fixedly connected between the speed reduction friction blocks. When the roof moved down the piston plate and promoted, the hydraulic oil of this side of liquid storage box was extruded and got into the cavity from the hose, the hydraulic oil effect speed reduction clutch blocks in the cavity, make speed reduction clutch blocks outwards slide in the friction groove and with articulated frame trompil inner wall butt, be favorable to increaseing the frictional force at cross connection department of articulated frame, thereby further slow down the speed that the roof descends, the initial position is recovered through reset spring when the roof rises to the friction block that slows down simultaneously, avoid the friction block that slows down to last to cause wearing and tearing to articulated frame butt.

Preferably, any hose is connected with an anti-winding mechanism, the anti-winding mechanism comprises a cross bar fixed on the wall body of the hinged frame, a guard ring is fixed on the cross bar, and the hose penetrates through the guard ring. The protective ring limits the moving range of the hose, avoids the hose from winding on the hinged frame to cause abnormal lifting when the top plate drives the liquid storage box to stretch and slide,

preferably, the upper end surface of the movable plate is provided with an anti-slip net sheet. The anti-skidding net piece has increased the frictional force of the auto parts of placing and fly leaf, reduces the horizontal slip that the part receives the emergence of shaking in the lift process, reduces the probability of part wearing and tearing.

The invention adopts the hydraulic resistance which is automatically formed along with the lifting to place the device to stall and fall down, and adjusts the hydraulic resistance through various mechanisms to realize the automatic adjustment of speed reduction, thereby having the following beneficial effects: when the top plate descends, the piston plate is driven to move in the liquid storage box, and the top plate moves downwards through the resistance of hydraulic oil to automatically decelerate; the speed adjusting mechanism can control the resistance of hydraulic oil to the piston plate by stirring the knob handle, so that the manual regulation and control speed reduction effect is realized to adapt to parts with different weights; when the automatic adjusting mechanism faces overweight parts, the speed reducing effect can be automatically adjusted through the speed adjusting mechanism, and the device is stalled and falls down when the overweight parts are placed; the secondary speed reducer realizes friction speed reduction of the hinged frame at the cross connection position through the speed reduction friction block, further improves the descending speed of parts, and accordingly protects the lifting parts. Therefore, the invention provides the lifting equipment stall protection device for the automobile part processing, which can perform stall-free falling deceleration buffering on the lifting equipment in multiple ways and can automatically adjust the deceleration effect.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a bottom view of the top deck of the present invention;

FIG. 3 is a schematic view of a first partial body structure according to the present invention;

FIG. 4 is a schematic perspective view of a piston plate and hollow rod of the present invention;

FIG. 5 is a schematic perspective view of a piston plate and fluid communication holes of the present invention;

FIG. 6 is a schematic diagram of a second partial body structure according to the present invention;

FIG. 7 is a schematic perspective view of a first embodiment of the speed adjustment mechanism of the present invention;

FIG. 8 is a schematic perspective view of a second embodiment of the speed adjustment mechanism of the present invention;

FIG. 9 is a schematic view of a third perspective view of the speed adjustment mechanism of the present invention;

FIG. 10 is a schematic perspective view of a piston plate and circular groove of the present invention;

FIG. 11 is a schematic perspective view of a first embodiment of the automatic adjustment apparatus of the present invention;

FIG. 12 is a schematic perspective view of a second embodiment of the automatic adjustment apparatus of the present invention;

FIG. 13 is a schematic perspective view of a reservoir and a hose according to the present invention;

FIG. 14 is a schematic perspective view of the secondary speed reducer of the present invention;

FIG. 15 is a perspective view of the friction reducing pad and friction groove of the present invention.

Reference numerals: the device comprises a bottom plate 1, a hinged frame 2, a hinged shaft 3, a top plate 4, a sliding roller 5, a liquid storage box 61, a piston plate 62, a liquid through hole 63, a hollow rod 64, a sleeve 65, a speed adjusting mechanism 7, a circular groove 71, a liquid blocking circular plate 72, a liquid passing arc hole 73, a damping adjusting rod 74, a pinching handle 75, an automatic adjusting device 8, a movable plate 81, a pressure spring 82, a sliding guide rail 83, an H-shaped guide frame 84, a T-shaped roller 85, a secondary speed reducing device 9, a cavity 91, a hose 92, a speed reducing friction block 93, a return spring 94, an anti-winding mechanism 10, a cross rod 101, a guard ring 102, an anti-skidding net piece 11 and a friction groove 12.

Detailed Description

The technical solution of the present invention is further described in detail below with reference to the following detailed description and the accompanying drawings:

it is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.

Example 1

Referring to the attached drawings 1-2, a lifting equipment stall protection device for automobile part processing comprises a bottom plate 1, wherein a hinged frame 2 is arranged on the bottom plate 1 in a slidable hinged mode, a hydraulic cylinder capable of pushing the hinged frame 2 is arranged in the bottom plate 1, the hinged frame 2 comprises two hinged frames, hinged shafts 3 correspondingly arranged at the intersection of the two frame bodies of the hinged frame 2 are arranged at the intersection, a top plate 4 is connected to the upper portion of the bottom plate 1 through the hinged frame 2, sliding rollers 5 are fixed on the hinged frame 2, sliding grooves formed in two sides of the top plate 4 are penetrated through two ends of each sliding roller 5, the sliding rollers 5 can slide and roll in the sliding grooves, the bottom plate 1 can drive the hinged frame 2 to drive the top plate 4 to lift through the hydraulic cylinder, and the lifting function of automobile parts placed on the top plate 4 is achieved.

Referring to fig. 2-6, a liquid storage box 61 is fixed at the bottom of the top plate 4, a piston plate 62 is arranged in the liquid storage box 61 in a sliding mode and filled with hydraulic oil, a plate body of the piston plate 62 is made of aluminum, rubber strips abutted to the inner wall of the liquid storage box 61 are arranged at the edge of the piston plate 62, two groups of liquid through holes 63 are symmetrically formed in the end face of the piston plate 62, the liquid through holes 63 in the same group are arranged at circular intervals, the liquid through holes 63 are through holes, two hollow rods 64 are symmetrically arranged on the side wall of the liquid storage box 61 in a sliding mode, one ends of the two hollow rods 64 are fixed to the end face, close to the sliding roller 5, of the piston plate 62 through bolts, a sleeve 65 is fixedly connected between the other ends of the two hollow rods 64, and the sleeve 65 is sleeved on the sliding roller 5 and can rotate.

When automobile parts are placed on the top plate 4 to be overweight, the top plate 4 presses the hinged frame 2 at a higher speed under the action of gravity, the hinged frame 2 is driven to slide in a chute of the top plate 4 while being compressed to move downwards, the movable sliding roller 5 drives the hollow tube to slide on the side wall of the liquid storage box 61 through the axial swinging of the sleeve 65, so that the piston plate 62 is pulled to move in the sliding direction in the liquid storage box 61, the piston plate 62 divides the liquid storage box 61 into two chambers, the hydraulic oil in the two chambers is circulated through the liquid through holes 63, the hydraulic oil in the chamber on one side of the liquid storage box 61 is extruded by the piston plate 62 pulled by the hollow tube, the hydraulic oil in the chamber on the other side of the liquid storage box 61 flows into the chamber on the other side from the liquid through holes 63 at a lower speed, hydraulic balance in the two chambers is gradually formed, and the oil pressure in the chamber on the pressed side is increased at a highest speed due to the higher instantaneous speed of the piston plate 62, and form great hydraulic resistance to piston plate 62 to reduce the displacement speed of piston plate 62 rapidly, realize the speed that roof 4 pushes down slowing down, avoid roof 4 and articulated frame 2 stall to push down and lead to the interior pneumatic cylinder of bottom plate 1 to damage, make the device lose the ability of lift part, also avoid simultaneously quick tenesmic roof 4 to pound the staff of injuring walking on every side, cause the incident.

Install in stock solution box 61 of roof 4 bottom and keep away from ground, be favorable to reducing the interference of ground vibrations to stock solution box 61 and piston plate 62, guarantee that piston plate 62 can normally slide and promote hydraulic oil.

Referring to fig. 6-10, the piston plate 62 is connected with a speed adjusting mechanism 7, the speed adjusting mechanism 7 includes circular grooves 71 symmetrically arranged in the piston plate 62, the hollow rod 64 is hollow and is communicated with the circular grooves 71, a liquid blocking circular plate 72 is rotatably arranged in any circular groove 71, a liquid passing arc hole 73 is formed in any liquid blocking circular plate 72, the liquid passing arc hole 73 is a through hole, a damping adjusting rod 74 is rotatably arranged in the hollow rod 64, one end of any damping adjusting rod 74 is fixed in the center of the end face of the liquid blocking circular plate 72, the other end of the damping adjusting rod is vertically connected with a pinching handle 75, a groove body is formed in the wall body of the hollow rod 64, and the pinching handle 75 extends out of the groove body on the hollow rod 64 and can axially swing.

The knob handle 75 is axially shifted to drive the damping adjusting rod 74 to rotate in the hollow rod 64, so as to drive the liquid-blocking circular plate 72 to rotate in the circular groove 71 in the piston plate 62, so that the liquid-passing arc holes 73 are communicated with a group of liquid-passing holes 63 circularly distributed on the piston plate 62 in a surrounding way, and according to different rotation angles, the hydraulic oil can flow from the liquid through holes 63 with different numbers to the chamber at the other side of the liquid storage box 61 through the liquid arc holes 73, so as to adjust the flow speed of the hydraulic oil, when the weight of the parts placed on the top plate 4 is too heavy, the liquid passing arc holes 73 are communicated with fewer liquid passing holes 63 by rotating the adjusting knob 75, thereby further increasing the oil resistance of the piston plate 62 and realizing further deceleration protection of the downward moving speed of the top plate 4, after the knob 75 is manually shifted to the moving angle position, the damping tuning rod 74 facilitates maintaining its position within the hollow rod 64 by a damping characteristic to avoid tuning failure.

Referring to fig. 13-14, any articulated shaft 3 is connected with a secondary speed reducer 9, the secondary speed reducer 9 includes a cavity 91 formed in the articulated shaft 3, the cavity 91 is communicated with the end surface of the articulated shaft 3 near the inner side, a hose 92 is inserted into the end surface of the articulated shaft 3 at one side of the communicated cavity 91, the hose 92 is communicated with the cavity in the liquid storage box 61 near the sliding roller 5, friction grooves 12 communicated with the cavity 91 are symmetrically formed in the curved surface of the articulated shaft 3, a speed reducing friction block 93 is arranged in any friction groove 12, and a return spring 94 is fixedly connected between the speed reducing friction blocks 93.

When the piston plate 62 moves downwards on the top plate 4 to push, the hydraulic oil on the side of the liquid storage box 61 is extruded and enters the cavity 91 from the hose 92, the hydraulic oil fills the cavity 91 and then decelerates the friction block 93 through the action of the oil pressure, so that the deceleration friction block 93 slides outwards in the friction groove 12, the outer side friction wall of the deceleration friction block 93 is abutted with the hole wall at the intersection of the hinge frame 2, the friction force of the hinge frame 2 at the intersection is increased, the rotating speed of the hinge frame 2 at the intersection is reduced, and the descending speed of the top plate 4 is further reduced, when not having the part to place the pneumatic cylinder drive roof 4 and rising, the reverse promotion of piston plate 62 makes the hydraulic oil in the cavity 91 be taken back to stock solution box 61 from hose 92, makes and loses the oil pressure in the cavity 91, and the friction block 93 that slows down resumes initial position through reset spring 94 this moment, avoids the friction block 93 that slows down to last to cause wearing and tearing to articulated frame 2 pore wall butt.

Referring to fig. 15, an anti-winding mechanism 10 is connected to any hose 92, and the anti-winding mechanism 10 includes a cross bar 101 fixed to the wall of the hinged frame 2, a guard ring 102 is fixed to the cross bar 101, and the hose 92 passes through the guard ring 102. The protective ring 102 limits the range of motion of the hose 92, and prevents the hose 92 from winding on the hinge frame 2 and causing the hose to be unable to rise or fall when the top plate 4 drives the liquid storage box 61 to slide in a telescopic manner.

Example 2

Referring to fig. 3-12, an automatic adjusting device 8 is disposed on the top plate 4, the automatic adjusting device 8 includes a movable plate 81 located above the top plate 4, compression springs 82 are disposed between the bottom of the movable plate 81 and the upper bottom surface of the top plate 4 in an array manner, a sliding guide 83 is disposed at the bottom of the movable plate 81, a vertical rod of the sliding guide 83 passes through a through slot at the bottom of the top plate 4 and can slide up and down, an H-shaped guide frame 84 is slidably disposed on the sliding guide rail 83, T-shaped rollers 85 are symmetrically hinged to two sides of the H-shaped guide frame 84, and a non-hinged end of any T-shaped roller 85 is fixedly connected to a knob 75 close to the T-shaped roller 85.

Heavier parts are placed on the movable plate 81, instantaneous impact vibration is buffered through the pressure spring 82 arranged at the bottom, damage and failure caused by excessive vibration of the bottom speed adjusting mechanism 7 and the piston are avoided, and abrasion between the parts and the top plate 4 caused by direct contact of the parts and the top plate is avoided.

The part presses down the movable plate 81 to drive the sliding guide rail 83 to move downwards, the H-shaped guide frame 84 moves downwards and slides on the sliding guide rail 83, the hinged end of the T-shaped rolling shaft is driven to slide in the groove bodies on two sides of the H-shaped guide frame and swing in a hinged mode, meanwhile, the non-hinged end of the T-shaped rolling shaft drives the nipping handle 75 to swing axially, and therefore the liquid blocking circular plate 72 rotates in the piston plate 62 to adjust the liquid flowing speed of the liquid flowing hole 63, resistance adjustment of the piston plate 62 is achieved automatically, the downward moving speed of the top plate 4 is further guaranteed not to stall and fall due to overweight of the part, the bottom plate 1 and a hydraulic cylinder are prevented from being injured by falling of the top plate 4 and the part, and safety accidents caused by workers injured by falling of the top plate 4 are also prevented.

The upper end face of the movable plate 81 is provided with an anti-skid net sheet 11. The friction force between the placed automobile parts and the movable plate 81 is increased by the anti-skidding net piece 11, the transverse slippage caused by the shock of the parts in the lifting process is reduced, and the probability of part abrasion is reduced.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A stall protection device of lifting equipment for automobile part machining comprises a base plate (1), wherein a hinged frame (2) is arranged on the base plate (1) in a slidable hinged mode, the hinged frame (2) comprises two frame bodies, hinged shafts (3) which are correspondingly arranged are arranged at the intersection of the two frame bodies, a top plate (4) is connected to the upper portion of the base plate (1) through the hinged frame (2), sliding rolling shafts (5) are fixed on the hinged frame (2), the sliding rolling shafts (5) penetrate through sliding grooves of the top plate (4),

the improved oil-water mixing device is characterized in that a liquid storage box (61) is fixed to the bottom of the top plate (4), a piston plate (62) is filled with hydraulic oil in the liquid storage box (61), liquid through holes (63) are symmetrically distributed in the piston plate (62) at intervals, the piston plate (62) is symmetrically connected with two hollow rods (64) through bolts, the two hollow rods (64) penetrate through the end portions of the liquid storage box (61), sleeves (65) are connected between the end portions of the liquid storage box (61), and the sleeves (65) are sleeved on the sliding rolling shafts (5).

2. The stall protection device of the lifting equipment for machining the automobile parts, as claimed in claim 1, wherein: piston plate (62) are connected with speed adjustment mechanism (7), speed adjustment mechanism (7) are seted up including the symmetry circular slot (71) in piston plate (62), hollow pole (64) with circular slot (71) intercommunication, arbitrary rotationally be equipped with in circular slot (71) and hinder liquid plectane (72), arbitrary hinder and seted up on liquid plectane (72) liquid arc hole (73), cross liquid arc hole (73) and be the through-hole, rotationally be equipped with damping transfer lever (74) in hollow pole (64), arbitrary damping transfer lever (74) one end be fixed in hinder liquid plectane (72) terminal surface center, the other end is connected with perpendicularly and holds between the fingers handle (75), hold between the fingers handle (75) and stretch out the cell body of seting up on the hollow pole (64).

3. The stall protection device of the lifting equipment for machining the automobile parts, as claimed in claim 2, wherein: be equipped with automatic regulating apparatus (8) on roof (4), automatic regulating apparatus (8) are including being located fly leaf (81) of roof (4) top, fly leaf (81) bottom with pressure spring (82) have been laid to the array between roof (4) upper base surface, fly leaf (81) bottom is equipped with sliding guide (83) downwards, the vertical body of rod of sliding guide (83) passes the logical groove of roof (4) bottom and can slide from top to bottom, be equipped with H shape guide frame (84) on sliding guide (83) with sliding, H shape guide frame (84) bilateral symmetry is articulated to be provided with T shape roller bearing (85), the non-hinged end of arbitrary T shape roller bearing (85) and close with it hold between fingers handle (75) fixed connection.

4. The stall protection device for the lifting equipment for machining the automobile parts, as claimed in claim 1, wherein: it is arbitrary articulated shaft (3) are connected with secondary speed reducer (9), secondary speed reducer (9) are including seting up in cavity (91) in articulated shaft (3), cavity (91) with articulated shaft (3) are by the inboard terminal surface intercommunication, articulated shaft (3) are in the intercommunication a side end surface interlude of cavity (91) has hose (92), hose (92) communicate be close to in stock solution box (61) in the cavity of slip roller bearing (5) one side, the symmetry seted up on the curved surface of articulated shaft (3) with friction groove (12) of cavity (91) intercommunication, arbitrary be provided with speed reduction friction block (93) in friction groove (12), fixedly connected with reset spring (94) between speed reduction friction block (93).

5. The stall protection device of the lifting equipment for machining the automobile parts, as claimed in claim 4, wherein: any hose (92) is connected with an anti-winding mechanism (10), the anti-winding mechanism (10) comprises a cross bar (101) fixed on the wall body of the hinged frame (2), a guard ring (102) is fixed on the cross bar (101), and the hose (92) penetrates through the guard ring (102).

6. The stall protection device of the lifting equipment for machining the automobile parts as claimed in claim 3, wherein: the upper end face of the movable plate (81) is provided with an anti-skid net sheet (11).