CN105293394B - Unwheeling unit synchro-lift system - Google Patents

Abstract

The invention discloses a kind of unwheeling unit synchro-lift system, including at least four movable vehicle supportings, the movable vehicle supporting includes body and carriage mechanism, and the carriage mechanism includes bracket and prop head；The bracket includes the supporting mechanism of two blocks of side plates being parallel to each other and connecting lateral plate；The prop head includes two side plates set respectively along two side plate interior sides, and one end of the side plate is connected with tray；Also include motor and the PLC system of the motor rotation can be controlled, alarm device is connected with the output end of the PLC system；The proximity switch for detecting car body is provided with the tray, the proximity switch is electrically connected to the input of the PLC system.The present invention have it is simple in construction, it is easy to operate, it is easy to accomplish the closed-loop control of unwheeling unit synchronous working, to be advantageous to improve the synchronization accuracy of unwheeling unit, improve the security of system；Using Redundancy Design, the advantages that improving the reliability of system.

Description

Unwheeling unit synchro-lift system

Technical field

The present invention relates to car lifting J-Horner technical field, in particular to a kind of unwheeling unit synchro-lift system.

Background technology

With the fast development in city, the abnormal congestion of traditional highway communication, it is difficult to meet people it is on and off duty and The requirement of trip.The advantages that carrying capacity is big due to one time for track traffic, and operation order of classes or grades at school is more, and collective's regulation and control are not in congestion, obtains To greatly developing.

In order to ensure the safety of track traffic, after rail vehicle operation a period of time, it is necessary to the wheel pair in bogie and The miscellaneous part of underbody is overhauled or changed, and needs during maintenance the vehicle by permutation marshalling to be lifted to certain altitude to change The bogie and miscellaneous part of vehicle bottom.

During maintenance, it is necessary to by it is fixed start shipment equipment or overhead traveling crane its compartment sling it is separated from chassis, to enter to vehicle Row maintenance, and position often is moved into the vehicle movement of maintenance, this just needs to set more fixations to start shipment equipment or day in maintenance shop Car, reduce effective work usable floor area in workshop, equipment increases, need to be by each section especially when multi-section vehicles need to overhaul Compartment moves moves position, therefore the repair time of vehicle is grown, and takes that equipment is more, and efficiency is low, and easily because handling and caused by vehicle Collide with, there is certain hidden danger by undermining in outer surface, influence to keep the safety in production, increase the cost of overhaul, and using solid When starting shipment equipment lifting surely or falling compartment, it is impossible to be truly realized linkage with liter or with drop, accident easily occurs.

Car lifting J-Horner is a kind of equipment for lifting car body from vehicle bottom, and in lifting process, car body will not be caused to damage It is bad.Car lifting J-Horner typically uses tetrad when in use, and four frame raise-positions to car body, which are put, carries out frame liter, and frame needs during rising Ensure that car body is horizontal, higher is required to the synchronization lifting of four car lifting J-Horners, urgently solved if ensureing that the synchronization of unwheeling unit turns into Certainly the problem of.

The content of the invention

For above-mentioned the deficiencies in the prior art, the technical problems to be solved by the invention are：How a kind of structure letter is provided Single, easy to operate, the synchronization accuracy of unwheeling unit, the security of system is good, and the unwheeling unit that the reliability of system is higher is synchronous Jacking system.

In order to solve the above-mentioned technical problem, present invention employs following technical scheme：

A kind of unwheeling unit synchro-lift system, including at least four movable vehicle supportings, the movable vehicle supporting bag The body being vertically arranged is included, the frame that is used for that can be moved up and down along body rises the carriage mechanism of car body, and is vertically arranged in body Interior leading screw, a work nut is equipped with the leading screw, the work nut is fixedly connected on the carriage mechanism On；The carriage mechanism includes bracket and the prop head being horizontally set in bracket；The bracket include two pieces of faces set and The side plate being parallel to each other and the supporting mechanism for connecting lateral plate；The prop head includes setting along two side plate interior sides respectively Two side plates put, the side plate are connected with tray towards one end of car lifting J-Horner active side；Also include being used to drive leading screw to rotate Motor；Characterized in that, the synchro-lift system also includes the PLC systems that can control the motor rotation Unite, the alarm device for sending alarm signal is connected with the output end of the PLC system；It is provided with and is used in the tray The proximity switch of car body is detected, the proximity switch is electrically connected to the input of the PLC system.

As optimization, the end of the leading screw is coaxially connected with an encoder for being used to detect leading screw rotating cycle, institute State the input that encoder is electrically connected to the PLC system.

As optimization, the motor is three-phase alternating-current servo motor.

As optimization, the proximity switch has been arranged in parallel two.

In summary, the present invention has simple in construction, easy to operate, it is easy to accomplish the closed loop control of unwheeling unit synchronous working System, be advantageous to improve the synchronization accuracy of unwheeling unit, improve the security of system；Using Redundancy Design, the reliable of system is improved The advantages that property.

Brief description of the drawings

Fig. 1 is a kind of structural representation using this using the car lifting J-Horner of new structure.

Fig. 2 is the structural representation of walking mechanism part in Fig. 1.

Fig. 3 is the structural representation of carriage mechanism part in Fig. 1.

Fig. 4 is leading screw and the structural representation of body installation in Fig. 1.

Fig. 5 is the structural representation of positioning sleeve part in Fig. 3.

Fig. 6 is Fig. 5 cross-sectional view.

Fig. 7 is the mounting structure schematic diagram of leading screw and work nut in Fig. 1.

Fig. 8 is work nut and the mounting structure schematic diagram of side plate in Fig. 3.

Fig. 9 is a kind of schematic diagram using this using the car lifting J-Horner system of new structure.

Embodiment

With reference to a kind of further to present invention work detailed using new car lifting J-Horner system and accompanying drawing using this Explanation.

During specific implementation：As shown in Fig. 1 ~ Fig. 9, a kind of car lifting J-Horner system, including including at least four movable vehicle supportings Unwheeling unit and PLC system 9 for controlling the unwheeling unit synchronization lifting, the movable vehicle supporting include vertical The body 1 of setting, the walking mechanism 2 that can adjust the road clearance of body 1 of the bottom of body 1 is arranged on, can be moved down along body 1 The dynamic carriage mechanism 4 for being used for frame and rising car body, and the leading screw 31 being vertically arranged in body 1, coordinate on the leading screw 31 and set A work nut 32 is equipped with, the work nut 32 is fixedly connected in the carriage mechanism 4；The upper end of the leading screw 31 can Rotation is articulated on the top plate of the body 1；Drive device 5 is provided with the bottom plate of the body 1；The drive device 5 Output end be coaxially disposed with the leading screw 31, the lower end of the leading screw 31 is fixedly connected on the output end of drive device 5；It is described The control signal of drive device 5 is electrically connected in the PLC system 9.

So, use leading screw suspended structure in structure design, leading screw under any state only by downward pulling force, Without bending stress.Be advantageous to improve the service life of car lifting J-Horner.The bottom that drive device is placed on to car lifting J-Horner can be effective Reduce the total height of car lifting J-Horner so that the center of gravity of car lifting J-Horner is lower, hangs and turns more safety and steady, because transmission system is at most bottom Layer, transmission system have more preferable maintenance.

Wherein, the drive device 5 includes the turbine worm reducer 51 on the bottom plate of body 1, the turbine and worm The turbine of reductor 51 is located at the bottom of the leading screw 31, and is coaxially disposed with the leading screw 31；There is one on the turbine The splined hole being arranged concentrically, the lower end of the leading screw 31 is the splined shaft coordinated with the splined hole, and is inserted in the splined shaft.

So, car lifting J-Horner employs the double self-locking function of screw pair self-locking and worm gear pair self-locking, can guarantee that unwheeling function Self-locking is kept for a long time in any lifting position, meets the needs of unwheeling work and safety guarantee to greatest extent.Using spline Axle is connected with splined hole can make the bearing capacity of the two strong, easy self-centering, and installation accuracy is high, be advantageous to improve transmission effect Rate.

Wherein, the drive device 5 also includes primary gear speed reducing device 52 and the motor on the bottom plate of body 1 53, input and the output end of the primary gear speed reducing device 52 are located at the same side；The output shaft of the motor 53 and institute The input for stating primary gear speed reducing device 52 is connected, and output end and the turbine and worm of the primary gear speed reducing device 52 slow down The worm screw of machine 51 is connected.

So, using such arrangement, it can be advantageous to make the overall structure of drive device compacter, be advantageous to Improve space availability ratio.

Wherein, a circular mounting hole is provided with the top plate of the body 1, fixed cover is provided with one in the mounting hole Overall cylindrical leading screw installation set 35, the upper end of the leading screw installation set 35 has outstanding ring flange 351, the method Blue disk 351 is bolted on the top plate of body 1；Having three-level in the leading screw installation set 35, diameter is successively from top to bottom The stepped hole 352 to diminish；In the stepped hole 352 first thrust bearing 353 is set with the hole at middle part；The silk The upper end of thick stick 31 is disposed with the first shaft part 311, spacing section 312 and the second shaft part 313, first shaft part from top to bottom The diameter of 311 diameter and the second shaft part 313 is respectively less than described spacing section 312 of diameter；Second shaft part 313 is from top to bottom Inserting coordinate in the endoporus of the first thrust bearing 353；Coordinate on first shaft part 311 and second thrust is installed Bearing 354；The upper end of leading screw installation set 35 is also equipped with an end cap 355 for being used to compress second thrust bearing 354.

In such manner, it is possible to so that the mounting structure of leading screw is simple, facilitates the installation of leading screw, be advantageous to the maintaining of leading screw.

Wherein, there is the two-stage Step Shaft 356 that diameter diminishes successively from top to bottom outside the leading screw installation set 35, and is located at The axis body diameter of top matches with the installation bore dia on the top plate of body 1, the axis body is sleeved on the top plate of body 1 Mounting hole in；Connected between the two-stage axis body of the Step Shaft 356 by cone transition.

In such manner, it is possible to which more convenient be installed to leading screw installation set in body top plate, efficiency of assembling is improved.

Wherein, first thrust bearing 353 is thrust angular contact bearing, and second thrust bearing 354 connects for axial direction Contact bearing.So, be advantageous to improve the service life of leading screw using thrust bearing.

Wherein, the carriage mechanism 4 includes bracket 41 and the prop head 42 being horizontally set in bracket 41；The bracket 41 The side plate 411 for setting and being parallel to each other including two pieces of faces and the supporting mechanism for connecting lateral plate 411；The prop head 42 is wrapped Include two side plates 421 set respectively along two inner sides of the side plate 411, the side plate 421 is towards the one of car lifting J-Horner active side End is connected with tray 422；The proximity switch 95 for detecting car body, the electricity of proximity switch 95 are provided with the tray 422 The input of the PLC system 9 is connected to, the alarm for sending alarm signal is connected with the output end of the PLC system 9 Device 91.

When specifically used, it can detect whether car body is fallen in prop head in real time using proximity switch, when one of prop head Proximity switch when not detecting car body, the car lifting J-Horner where other prop heads will be out of service, until close in the prop head Switch detects that car body is fallen in the prop head, and all car lifting J-Horners are subsynchronous again to be risen or fallen.In such manner, it is possible to realize car lifting J-Horner Synchronous working, improve the security of system.

When it is implemented, above-mentioned proximity switch can also be replaced using pressure sensor.When specifically used, when wherein one The pressure sensor of individual prop head detects the pressure signal of car body when being zero, and the car lifting J-Horner where other prop heads will be out of service, Until the pressure sensor in the prop head detects the pressure of car body, all car lifting J-Horners are subsynchronous again to be risen or fallen.

Wherein, the end of the leading screw 31 is coaxially connected with an encoder 96 for being used to detect leading screw rotating cycle, institute State the input that encoder 96 is electrically connected to the PLC system 9.So, the leading screw rotating cycle detected by encoder, leading screw Helical pitch and transmission system speed reducing ratio, the actual distance risen or fallen of each car lifting J-Horner can be calculated.So, can be with Realize and the working condition of car lifting J-Horner is fed back, be advantageous to improve the synchronization accuracy of car lifting J-Horner.

Wherein, the motor 53 is three-phase alternating-current servo motor.Using such motor transmission system is had more Good action response, simultaneously, it is possible to achieve the closed-loop control to car lifting J-Horner, improve the operating accuracy of car lifting J-Horner.

Wherein, the proximity switch 95 has been arranged in parallel two.So, using Redundancy Design, one of them can be prevented Proximity switch is damaged and failed, and improves the reliability of system.

When it is implemented, photoelectric sensor is installed at the top of car lifting J-Horner, photoelectric sensor and driving screw synchronous rotary, Every turn of photoelectric sensor can send fixed number of pulses, by being detected to the number of pulses that photoelectric sensor exports, The angle of driving screw rotation is may know that, and then knows the height of car lifting J-Horner unwheeling.

Specific formula for calculation is H=L Ψ/360=L m/n

L----- driving screw helical pitches the Ψ ----screw rod anglec of rotation

The umber of pulse that the umber of pulse n---- sensors that m---- sensors are sent often transfer

L and n is constant, it is seen that the height of car lifting J-Horner unwheeling is directly proportional to the umber of pulse that photoelectric sensor is sent.

Contrast processing is carried out by the umber of pulse sent to each car lifting J-Horner photoelectric sensor, it is possible to know each unwheeling Whether frame height is contour, differs, and then produces control signal using this difference, and the car lifting J-Horner that unwheeling can be made high stops Only wait, height difference to be achieved resynchronizes unwheeling, the synchronous unwheeling in control range is realized, due to photoelectric transfer within requiring Every turn of sensor can export 6400 pulse signals, this useful control mode can reach at a relatively high precision.

Wherein, a jam nut 33 is also equipped with the leading screw 31, the jam nut 33 is disposed on The lower section of the work nut 32；Being fixedly connected between the work nut 32 and jam nut 33 can be along the leading screw 31 The connection sheet 34 of axial direction compression, the work nut 32 can be in the presence of connection sheets 34 around leading screw with jam nut 33 31 are synchronized with the movement；The input of the PLC system 9, which is connected with one and is arranged in work nut, to be used to detect the work nut The displacement transducer 92 of distance between 32 and jam nut 33.

During implementation, because the weight of car body reaches 25 ~ 45 tons, in the course of work, the weight of car body mainly falls in work spiral shell On mother, and jam nut is not subject to pressure substantially, and so, the wear extent of work nut is far longer than the wear extent of jam nut. Once work nut is worn, and jam nut does not wear, and work nut will move down relative to jam nut, even Contact pin can not bear the weight of car.So, connection sheet will be compressed, and staff can be sentenced by the degree that connection sheet is compressed Break and the wear extent of work nut, work nut is changed in advance, prevent the generation of danger.In addition, even if work nut Completely worn out and drop, underlying jam nut can also ensure that carriage mechanism will not fall, and ensure that frame The safety of vehicle device.

Wherein, institute's displacement sensors 92 are vertically fixedly mounted in the work nut 32；The displacement passes The test side of sensor 92 is towards the jam nut 33；The position that institute's displacement sensors 92 are corresponded on the jam nut 33 is set A block 331 that can be detected by institute's displacement sensors 92 is equipped with, between the block 331 and displacement transducer 92 Distance is less than or equal to the distance between work nut 32 and jam nut 33.

When specifically used, work nut wear extent permissible value is provided with PLC system, once displacement transducer detects During the signal of block, illustrate that the wear extent of work nut alreadys exceed permissible value, the alarm device being connected with PLC system will be reported It is alert, prompt staff to change work nut, avoid the generation of danger, be advantageous to the security of raising system.

Wherein, the upper end of the connection sheet 34 is welded in the work nut 32, and the lower end of the connection sheet 34 has The bar hole that length direction is vertically set, the connection sheet 34 through the bar hole by being bolted to the peace On full nut 33.

So, fixed between connection sheet and work nut by the way of welding, connection sheet can be prevented relative to work Nut moves；The lower end of connection sheet sets slotted hole to be advantageous to adjust the distance between work nut and jam nut, makes the two It can ensure after being connected synchronous around guide screw movement.

Wherein, the distance between the work nut 32 and jam nut 33 are 5 ~ 10mm.So, reduce work nut with The distance between jam nut, the impulsive force that work nut abrasion is fallen afterwards can be reduced, improve the safety of whole system.

Wherein, the connection sheet 34 is symmetrically arranged with two in the radial direction in work nut 32.So, once having one Connecting bolt in individual connection sheet loosens, another connection sheet also can normal work, be advantageous to improve the safety of car lifting J-Horner Property.

When it is implemented, work nut uses the frame mode of steel-casting hot charging tin bronze nut.So, due to tin bronze Hardness it is lower than the hardness of cast steel, so, in work nut and the leading screw course of work, the wear extent of work nut is bigger, and silk Thick stick will not have a too big abrasion, during maintenance, it is only necessary to work nut is changed, advantageously reduces maintenance cost.

Wherein, the work nut 32 is among two blocks of side plates 411 and with along perpendicular to the side plate 411 Direction extends the cylindrical journal stirrup to be formed to both sides；The side plate 411 is provided with positioned at the position of the corresponding journal stirrup to be used for The branch ear muff of the journal stirrup is installed, the journal stirrup is inserted into corresponding branch ear muff；The endoporus of the branch ear muff is vertically The bar hole of setting；The input of the PLC system 9 is connected with first microswitch 93；First microswitch 93 Below the bar hole of the branch ear muff, the button of first microswitch 93 towards the bar hole and extend into this In shape hole.

When car lifting J-Horner synchronously declines, once carriage mechanism is blocked on guide rail, work nut can be in the presence of leading screw Continue to decline, the journal stirrup of work nut can also move downward, so as to touch the first microswitch below branch ear muff, with first The connected PLC system of microswitch will stop the work synchronously declining of car lifting J-Horner, while alarm device is sent alarm signal Number, notify staff to exclude failure, be advantageous to improve the service life of car lifting J-Horner, and the security of system.

Wherein, the journal stirrup, which is put, is also equipped with a pressure sensor 94, and the pressure sensor 94 is located at the bar The top in shape hole, and the test side of the pressure sensor 94 is extend into the bar hole down；The electricity of pressure sensor 94 It is connected to the PLC system 9.

When car lifting J-Horner synchronously rises, once carriage mechanism is blocked on guide rail, work nut can be in the presence of leading screw Continue to rise, the pressure sensor that the journal stirrup of work nut is pointed to above journal stirrup set is extruded, so that pressure sensor The pressure signal of upper detection steeply rises, when the pressure signal of pressure sensor detection exceedes the safety value of PLC system setting, PLC system will stop the work synchronously rising of car lifting J-Horner, while alarm device is sent alarm signal, notify staff Failure is excluded, is advantageous to improve the service life of car lifting J-Horner, and the security of system.

Wherein, the guide rail 11 of the tabular of two faces that are parallel to each other, the carriage mechanism are vertically arranged with the body 1 4 among two guide rails 11；Two blocks of side plates 411 are parallel with the guide rail 11, and the outer lateral extent of two blocks of side plates 411 Match with the inner distance of two pieces of guide rails 11；The side of the side plate 411 towards corresponding guide rail 11 is provided with some Roller 412 is carried, the axis of the carrying roller 412 is perpendicular to corresponding side plate 411；The roller 412 that carries is along guide rail 11 Width be distributed on the both sides of corresponding rails, it is and tangent with the corresponding side of guide rail 11.

Using such structure, when car lifting J-Horner works, pressure that guide rail is born will along the direction of plane where guide rail, In such manner, it is possible to prevent the deformation of guide rail, system lifetim is improved.Said structure is simple, is easy to make.When it is implemented, unwheeling Machine body is welded using high-quality low-carbon alloy steel, and two liftable automotive chassis guide rails of group weldering on body, the guide rail is in a group weldering Machining is completed afterwards, it is ensured that the geometric accuracy of guide rail.

Wherein, two carrying rollers 412 are provided with each side plate 411, respectively positioned at corresponding guide rail 11 Both sides, and it is located at another lower section for carrying roller 412 close to the carrying roller 412 of car lifting J-Horner active side.

Wherein, an auxiliary wheel 413 is additionally provided with each side plate 411, the auxiliary wheel 413 is located remotely from The underface of the carrying roller 412 of car lifting J-Horner active side.

Rack 423 is horizontally installed with one of them described side plate 421；Along perpendicular to the side plate on the bracket 41 411 direction is provided with a rotating shaft, and one and the meshed gears 414 of rack 423 are fixed with the rotating shaft；The rotating shaft One end be coaxially connected with a circular handle 415 through the side plate 411 of bracket 41.

When it is implemented, because car body model is different, unwheeling position is also different, using said structure, can be directed to difference Car body model be adjusted to different unwheeling positions, be advantageous to improve car lifting J-Horner the scope of application.

There are some positioning holes 424 being placed equidistant in the horizontal direction, the side plate corresponds on one of them described side plate 421 Side plate 411 on there is a screwed hole for being located at sustained height with the positioning hole 424, be provided with the screwed hole one it is fixed Position mechanism, the detent mechanism includes positioning sleeve 416 and the alignment pin 417 being slidably disposed in positioning sleeve 416, described Alignment pin 417 is inserted into the positioning hole 424.

So, during unwheeling, prop head can be fixed, prevents that prop head is mobile and causes car body to fall during unwheeling Danger, be advantageous to improve car lifting J-Horner system security.

Wherein, a helical spring 418 is set with the positioning sleeve 416, the positioning sleeve 416 is away from the bracket 41 Position have one extend inwardly in a radial direction the first boss to be formed；The middle part of alignment pin 417 has one along footpath Stretch out the second boss to be formed to direction；The second boss is located at the first boss close to the one of the bracket 41 Side；The helical spring 418 be arranged between first boss and second boss, the helical spring 418 in the raw when The alignment pin 417 is inserted into the positioning hole 424, and the positioning when helical spring 418 is in compressive state Pin 417 can exit the positioning hole 424.

Using said structure, alignment pin can be made to keep stretching state in its natural state, consolidated when using alignment pin Regularly, alignment pin will not surprisingly come off and cause danger.Be advantageous to the security of raising system.

Wherein, one end end of the positioning sleeve 416 away from the bracket 41 has the neck set along its length, should Neck is penetrated along the radial direction of positioning sleeve 416 and set；The one end of the alignment pin 417 away from the bracket 41 has one along its Radial direction extends the card column to be formed to both sides, and the card column can be slipped into the neck.When it is implemented, the length of neck The length that positioning sleeve is stretched out when being stretched out with alignment pin matches.So, when needing to be adjusted prop head position, will can determine The card column of position pin pulls out from neck, and rotates an angle, makes to block on the body of positioning sleeve.So, it is fixed to make Position pin is retracted in positioning sleeve, and the convenient position to prop head is adjusted.

Wherein, the outside of the positioning sleeve 416 has symmetrically arranged two planes being parallel to each other.So, Ke Yifang Just positioning sleeve is clamped using spanner, is advantageous to the installation of positioning sleeve.

Wherein, the walking mechanism 2 includes being vertically arranged in hydraulic cylinder 21 of the body 1 in the side wall of active side, institute State the bottom of hydraulic cylinder 21 and rear roller 22 is installed；The bottom of hydraulic cylinder 21 is also hinged with the pressure that an entirety is in inverted L-shaped Bar 23, the kink of the depression bar 23 are hinged on the body 1, the both sides of 23 end directed downwardly of depression bar in the width direction A straight-bar 24 set towards the oblique top of active side is respectively hinged with, the other end of the straight-bar 24 is hinged with an entirety and is in The supporting plate 25 of obtuse triangle, the bottom plate at the obtuse angle of the supporting plate 25 with the body 1 are hinged；The court of supporting plate 25 Front wheel 26 is installed, the input of the PLC system 9 is connected with to be used on the bottom plate of body 1 to one jiao of active side In the second microswitch 97 whether the detection bottom plate of body 1 lands.

Using said structure, when hydraulic cylinder stretches out, rear roller moves down relative to body, meanwhile, hydraulic cylinder passes through pressure Bar, straight-bar and gripper shoe groups into bar linkage structure front wheel is moved down also relative to body so that body is lifted away from ground Face.So, the movement of car lifting J-Horner can be facilitated.But walking mechanism can not bear pressure when body framework rises, when frame rises, need Ensure that body is integrally fallen to the ground.Second microswitch is installed on organism soleplate, can detect whether body falls on down Position, when body does not fall in place, PLC system can not start car lifting J-Horner lifting, while alarm device is sent alarm signal Number, remind staff that body falls and restart car lifting J-Horner in place, be advantageous to improve the service life of car lifting J-Horner, and system Security.

Wherein, position corresponding to the rear roller 22 and front wheel 26 is each provided with second microswitch 97. In this manner it is ensured that the bottom plate of each car lifting J-Horner integrally falls in place.

Wherein, the supporting plate 25 is towards being hinged with an installing plate 27 on one jiao of active side, the installing plate 27 Middle part is be hinged with the supporting plate 25, and the both ends of the installing plate 27 are each provided with a front wheel 26.So, before two 3 points of roller and rear roller composition determine a plane, make overall structure simple.

When it is implemented, the rear roller 22 is universal wheel.So, in mobile car lifter, the turning of car lifting J-Horner is facilitated.

When it is implemented, the alarm device 91 is audible-visual annunciator.So, sound and light can be used to the people that works Member is reminded, it is ensured that can remind each staff.

A kind of unwheeling unit synchronization lifting method, comprises the following steps,

A, the car lifting J-Horner system of said structure is obtained.

B, the movable vehicle supporting obtained in step a is moved to and treats that the frame raise-position for the car body that frame rises is put.

C, car body is pushed up in advance；Starting the PLC system 9 controls the motor 53 of each movable vehicle supporting to drive Leading screw rotates, and drives carriage mechanism 4 to rise, and when proximity switch 95 is detected when the car body that frame rises, stops to the proximity switch The motor 53 of 95 place movable vehicle supportings is driven, until all proximity switches 95 all detect the car for treating that frame rises Body.

D, Synchronous lifting；Start the PLC system 9 while control the motor 53 of four movable vehicle supportings with identical Speed rotation, drive four carriage mechanisms 4 are synchronous to rise；Until body framework is raised into position.

When e, declining, start the PLC system 9 while control the motor 53 of four movable vehicle supportings with identical Speed rotates, and drives four carriage mechanisms 4 are synchronous to decline；Fallen in place until by car body.

When it is implemented, each portion such as above-mentioned PLC system, pressure sensor, proximity switch, microswitch and alarm device It is to belong to ripe prior art to divide component itself and mutual connected mode, and component itself is not belonging to the application couple Prior art makes the place of creative contribution, and the application makes the place of creative contribution to prior art, and be will be above-mentioned each Existing part is arranged on the location fix of particular requirement, and is combined and connects, and it is improved detection in order to detect Precision, to be implemented for the control to car lifting J-Horner, reach the purpose for the security for improving car lifting J-Horner.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not limitation with the present invention, all in essence of the invention All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.

Claims (4)

1. unwheeling unit synchro-lift system, including at least four movable vehicle supportings, the movable vehicle supporting includes vertical The body of setting（1）, can be along body（1）The carriage mechanism for being used for frame and rising car body moved up and down（4）, and it is vertically arranged in machine Body（1）Interior leading screw（31）, the leading screw（31）On be equipped with a work nut（32）, the work nut（32）Gu Surely it is connected to the carriage mechanism（4）On；The carriage mechanism（4）Including bracket（41）And it is horizontally set on bracket（41）It is interior Prop head（42）；The bracket（41）The side plate for setting and being parallel to each other including two pieces of faces（411）And for connecting lateral plate （411）Supporting mechanism；The prop head（42）Including respectively along two side plates（411）Two side plates that inner side is set （421）, the side plate（421）Tray is connected with towards one end of car lifting J-Horner active side（422）；Also include being used to drive leading screw to revolve The motor turned（53）；Characterized in that, the synchro-lift system also includes that the motor can be controlled（53）Rotation The PLC system turned（9）, the PLC system（9）Output end on be connected with alarm device for sending alarm signal（91）； The tray（422）Inside it is provided with the proximity switch for detecting car body（95）, the proximity switch（95）It is electrically connected to described PLC system（9）Input；The work nut（32）Positioned at two blocks of side plates（411）It is middle and with along perpendicular to institute State side plate（411）Direction extend the cylindrical journal stirrup to be formed to both sides；The side plate（411）Positioned at the corresponding journal stirrup Position is provided with the branch ear muff for installing the journal stirrup, and the journal stirrup is inserted into corresponding branch ear muff；The branch ear muff it is interior Hole is the bar hole vertically set；The PLC system（9）Input be connected with first microswitch（93）； First microswitch（93）Below the bar hole of the branch ear muff, first microswitch（93）Button court To the bar hole and it extend into the bar hole.

2. unwheeling unit synchro-lift system as claimed in claim 1, it is characterised in that the leading screw（31）End it is coaxial It is connected with an encoder for being used to detect leading screw rotating cycle（96）, the encoder（96）It is electrically connected to the PLC system （9）Input.

3. unwheeling unit synchro-lift system as claimed in claim 2, it is characterised in that the motor（53）For three-phase AC servo motor.

4. unwheeling unit synchro-lift system as claimed in claim 1, it is characterised in that the proximity switch（95）Parallel connection is set It is equipped with two.