CN103693584B - Can automatically compensate double shearing type lifters of difference in height - Google Patents

Abstract

This case discloses a kind of double shearing type lifters that can automatically compensate difference in height, and each hinge arms of this lifting machine, master cylinder, auxiliary oil cylinder are all with corresponding revolute pair for coupling；It is respectively provided with infrared reflection plate and infrared emitting and accepts assembly with reflection；Check valve, the first hydraulic electromagnetic guiding valve and the first oil feed line, the second oil feed line has been set gradually on gear oil pump oil-out pipeline, first oil feed line accesses master cylinder rodless cavity, second oil feed line accesses the series winding oil pipe of master cylinder rod chamber and auxiliary oil cylinder rodless cavity, pick out to branch string and have the first oil return pipe of the second hydraulic electromagnetic guiding valve, pick out to branch string and have the pressure-regulating overflow pipeline of pressure regulator valve, control circuit is provided with the normally closed time delay breaking-off contact carried by the time relay, normally opened timing closing contact and photoswitch circuit；With hydraulic pressure, pneumatic and electric control circuit and frame for movement collaborative work, automatically compensate the first work platforms and second work platforms difference in height in synchronous lifting.

Description

Can automatically compensate double shearing type lifters of difference in height

Technical field

The present invention relates to car repair equipment, a kind of for safeguarding or repairing the act in all kinds of four-wheel car The equipment of liter.

Background technology

Maintain various family-sized cars, minibus, the 4 S auto shop of lorry at such as specialized maintenance, often see frame-type Vehicle lift, the maximum feature of that lifting equipment is to be especially suitable for having that place is relatively big, it is indoor to be positioned at, be easy to fix Repair shop, the hydraulic jack of the most traditional queen post needs bigger space cost, typically maintained vehicle is had limit for height Requirement, in terms of safety in utilization, the hydraulic jack of twin columns slide block in guide pillar all uses nylon material, in upper and lower displacement Middle easy to wear because of frequent friction, and the slide block changing this abrasion is time-consuming, delay work, maintenance cost is the highest.According to user market Demand, research staff develop several can be installed separately, regulate combined platform face area size by two formal separation And hydraulic system, electric-control system, the contracting formula hydraulic elevating platform of cutting of the pneumatic system coordinating and unifying become set of and can lift load Thing or double shearing type lifters of vehicle upper and lower displacement, double shearing type lifters occupation of land space is few, and user uses in the majority with indoor location, But also there are some because being installed on outdoor vacant lot by work place restriction, in addition suitable block protection and also can obtain good Good application effect.Therefore the use space cost of this type of pair of shearing type lifter is relatively low, and owing to its intrinsic mechanical strength is high, can The construction featuress such as tonality is good, use safer.In a longer period, double shearing type lifter market share amounts are continuous Promote, had and preferably promoted the use of.Along with the extensive application of double shearing type lifters, though engineers finds double shearing type lifter The up and down motion of hydraulic platform, two liquid in this working method are completed with the major-minor oil cylinder oil-feed simultaneously connected, oil return Flattening bench precision of its upper and lower synchronous shift in initial use is higher, and two flat surface stop at height during any space Difference the least and negligible, but after the use in a stage due to inside hydraulic system including the internal leakage of hydraulic valve Factors cause the flat surface that the platform that auxiliary oil cylinder piston rod lifted often is lifted less than main oil cylinder piston bar, from And cause and tilted in described two flat surface by lifting vehicle, the measure in the past solving this problem is all directly at hydraulic pressure The control loop of system installs hand-operated direction valve additional and directly controls the independent oil-feed of auxiliary oil cylinder, to raise what auxiliary oil cylinder piston rod was lifted Work platforms, so that above-mentioned two flat surface are located in the same horizontal plane and safety that the equipment that can ensure that uses.But this people For the height adjustment to single work platforms in actual use often due to the difference of the technical merit of operator and effect Poor, the most serious violation operation there will be on the contrary and carried vehicle or weight and be placed in becoming of the most unsafe danger In the state toppled.

Summary of the invention

The difference in height the most often occurred in view of above-mentioned pair of shearing type lifter two hydraulic workbench is difficult to adjustment Technology with use defect, engineers is thought through earnest analytical study and is overcome such defect should redesign out symbol completely The technical scheme closing actual demand includes new hydraulic system, pneumatic system and includes the Circuits System of photo-electric control technology with full The complementary conditions that foot frame for movement is accurately run, particularly implement produced high in two hydraulic workbench upper and lower displacements The automatic adjustment of degree difference.

The above-mentioned purpose of the present invention is achieved in that a kind of double shearing type lifters that can automatically compensate difference in height, including Master cylinder lifting machine assembly, auxiliary oil cylinder lifting machine assembly, electric-control system, hydraulic system and pneumatic system, is characterized in that: at main oil Rotate with the first revolute pair on first bedframe of cylinder lifting machine and couple the first hinge arms；The lower end of the second hinge arms rotates Coupling the first roller, the guide pass of the first bedframe and the first roller are rolling bearing shape；First hinge arms and the second hinge Arm rotates vice division chief second to be implemented to rotate connection；First Teethed bolt lock buckle and master cylinder outer wall are implemented to be fixedly connected；Master cylinder Lower end Duan tri-rotates vice division chief to be implemented to couple with the rotation of the first hinge arms, and the main oil cylinder piston bar upper end section in master cylinder exists 4th rotates vice division chief implements to couple with the rotation of the 3rd hinge arms；With the 5th revolute pair, the first hinge arms is real with the 3rd hinge arms Execute rotation to couple；Second hinge arms rotates vice division chief the 6th and implements to couple with the rotation of the 4th hinge arms；Real with the 7th revolute pair Execute the 3rd hinge arms to couple with the rotation of the 4th hinge arms；The upper end section of the 3rd hinge arms rotates vice division chief the 8th and implements and first The rotation of work platforms couples, and rotates at the upper end section of the 4th hinge arms and couple First portion roller, First portion roller in Guide pass is set in rolling shape ground supporting the first work platforms；Implement to engage with the teeth groove of the first Teethed bolt lock buckle or separate the One hock is connected firmly the bottom at the first hock Special arm；Lower end section at the first hock Special arm is provided with first with connecting firmly Air rammer cylinder；When the first piston masthead head of the first air rammer cylinder engages with master cylinder outer wall, the first hock and the first tooth The teeth groove of bar locking board is released state, during its air rammer cylinder body of first piston masthead head retraction, and the first hock and first The teeth groove of Teethed bolt lock buckle is engagement；It has been fixedly disposed complete photoelectric switch at the first work platform dextral face Infrared reflection plate；Second bedframe of auxiliary oil cylinder lifting machine rotates with the 9th revolute pair and couples the 5th hinge arms； The lower end of the 6th hinge arms rotates and couples the second roller, and guide pass and second roller of the second bedframe are rolling bearing Shape；5th hinge arms rotates vice division chief's enforcement rotation with the 6th hinge arms the tenth and couples；Second Teethed bolt lock buckle and auxiliary oil cylinder Outer wall is implemented to be fixedly connected；The lower end Duan 11 of auxiliary oil cylinder rotates vice division chief to be implemented to couple with the rotation of the 5th hinge arms, secondary In-oil cylinder auxiliary oil cylinder piston rod upper end section rotates vice division chief the 12nd and implements to couple with the rotation of the 7th hinge arms；With the 13rd 5th hinge arms is implemented rotation with the 7th hinge arms and is coupled by revolute pair；6th hinge arms rotates vice division chief the 14th and implements and the The rotation of eight hinge arms couples；Implement the 7th hinge arms with the 15th revolute pair to couple with the rotation of the 8th hinge arms；7th hinge The upper end section of chain arm rotates vice division chief the 16th and implements to couple with the rotation of the second work platforms, and the upper end section of the 8th hinge arms Place rotates and couples second portion's roller, and second portion's roller sets guide pass in supporting the second work platforms with rolling shape；Real The teeth groove engagement granting the second Teethed bolt lock buckle or the second hock separated are connected firmly the bottom at the second hock Special arm, The lower end section of the second hock Special arm is provided with the second air rammer cylinder with connecting firmly；The second piston rod in second air rammer cylinder When top engages with auxiliary oil cylinder outer wall, the second hock and the second Teethed bolt lock buckle teeth groove are released state, the second piston rod top During its air rammer cylinder body of retraction, the teeth groove of the second hock and the second Teethed bolt lock buckle is engagement；Again in the second work The infrared emitting being fixedly disposed complete photoelectric switch at platform sinistral face accepts assembly with reflection；In double shear formula Lifting machine hydraulic system is provided with hydraulic oil container, between gear oil pump and hydraulic oil container, is provided with drainage screen, at gear oil pump Oil-out pipeline on set gradually check valve, the first hydraulic electromagnetic guiding valve and the first oil feed line, the second oil feed line, And: make the first oil feed line access master cylinder rodless cavity, make the second oil feed line access master cylinder rod chamber with auxiliary oil cylinder without bar The series winding oil pipe in chamber；Oil circuit top set between check valve and the first hydraulic electromagnetic guiding valve picking out string has the second hydraulic electromagnetic First oil return pipe of guiding valve；Pick out to oil circuit top set between check valve and gear oil pump string and have the pressure-regulating overflow of pressure regulator valve Pipeline；

The application main circuit of 380 volts of three-phase alternating-current supplies and electronic it is provided with in the electric-control system of double shearing type lifters Machine, includes the in groups fuse protector the most ad hoc from 380 volts AC points of incoming cables, external power supply is always opened in its main circuit Pass, A.C. contactor and the three-phase alternating-current motor accessed in overload protective device outlet；Connecing at external battery main switch again A phase electricity is taken with C phase electricity as two power access ends of the transformer of power supply needed for control loop on outlet pile crown, should Secondary coil two outfan of transformator forms the low-voltage AC power supply of 26 volts, at the electricity that this transformer secondary coil is formed Source output terminal accesses the first fuse, be parallel with signal lights, couple have for control first hydraulic electromagnetic guiding valve liquid stream commutation Electromagnet coil obtains electric and dead electricity photoswitch, couples and has the first inching button, linkage button groups, is provided with by time relay The normally closed time delay breaking-off contact that device carries, couples and has the photoelectricity normally open contact in photoswitch circuit, couples and has control the first liquid The electromagnet coil of pressure magnetic slide valve liquid stream commutation, couples and has the second inching button, couple and have A.C. contactor electromagnet coil And obtain electric, dead electricity for controlling A.C. contactor electromagnet coil and be serially connected with the normally closed interlock of overload protective device；At bridge The DC control circuit of 24 volts after formula ballast accesses the second fuse, accesses and thirdly move button and linkage button groups, Access the normally opened timing closing contact carried by the time relay, accessed for controlling the second hydraulic electromagnetic guiding valve oil circuit logical The second disconnected hydraulic electromagnetic guiding valve electromagnet coil, accesses the pneumatic operated valve electromagnet coil for controlling the commutation of air slide air flue And time relay electromagnet coil；Be provided with on the power input line road of the primary coil of mains transformer again jerk by Button.

The access pipeline of the air slide arranged in the pneumatic system of double shearing type lifters is communicated to high-pressure air source.

Wherein, the upper end of described first hock Special arm and main oil cylinder piston bar with the 4th revolute pair implement coaxially with The rotation of the 3rd hinge arms couples.

Wherein, the upper end of described second hock Special arm is implemented with the 12nd revolute pair coaxially with auxiliary oil cylinder piston rod Rotation with the 7th hinge arms couples.

Wherein, described first bedframe two side position is respectively equipped with the first minimum gag lever post and second minimum spacing Bar；Two side positions of described second bedframe are respectively equipped with the 3rd minimum gag lever post and the 4th minimum gag lever post.

The present invention compared with prior art has the advantages that with newly-designed hydraulic circuit, pneumatic circuit and automatically controlled The mechanical mechanism of the double shearing type lifter of loop combination is quaternity ground collaborative work, and the especially performance with photoswitch is special Point, effectively controls oil circuit commutation and the time setting of magnetic slide valve, automatically compensates the first work platforms and the second work platforms exists Difference in height in synchronous lifting, it is ensured that the safety of lifting machine overall operation.

Accompanying drawing explanation

The accompanying drawing explanation of embodiment:

Fig. 1 show the hydraulic schematic diagram of the embodiment of the present invention；

Fig. 2 show the electric control theory figure of the present embodiment；

Fig. 3 is the pneumatic schematic diagram of the present embodiment；

Fig. 4 is the structural representation of the master cylinder lifting machine assembly of the present embodiment；

Fig. 5 show the present embodiment top view relative to Fig. 4；

Fig. 6 show the structural representation of the auxiliary oil cylinder lifting machine assembly of the present embodiment；

Fig. 7 show the present embodiment top view relative to Fig. 6；

Fig. 8 show the present embodiment partial enlarged drawing I on Fig. 4；

Fig. 9 show the present embodiment partial enlarged drawing II on Fig. 6；

It is the present embodiment partial enlarged drawing A on Fig. 7 shown in Figure 10；

Figure 11 is the partial enlarged drawing B after the present embodiment rotated angle on Fig. 5 180 °.

Parts shown in each label of accompanying drawing, device and relevant geometric element title are as follows:

1 first bedframe, 2 first revolute pairs, 3 first hinge arms, 4 second hinge arms, 5 first rollers, 6 second rotate Pair, 7 first Teethed bolt lock buckles, 8 master cylinders, 9 the 3rd revolute pairs, 10 the 3rd hinge arms, 11 the 4th revolute pairs, 12 the 5th rotate Secondary, 13 the 6th revolute pairs, 14 the 4th hinge arms, 15 the 7th revolute pairs, 16 the 8th revolute pairs, 17 first work platformses, 18 first Platform portion roller, 19 first hocks, 20 first hock Special arms, 21 first air rammer cylinders, 22 first piston masthead heads, 23 is main Oil cylinder outer wall, 24 infrared reflection plates, 25 main oil cylinder piston bars, 26 second bedframes, 27 the 9th revolute pairs, 28 the 5th hinges Arm, 29 the 6th hinge arms, 30 second rollers, 31 the tenth revolute pairs, 32 second Teethed bolt lock buckles, 33 auxiliary oil cylinders, 34 the 11st turns Dynamic pair, 35 auxiliary oil cylinder piston rods, 36 the 12nd revolute pairs, 37 the 7th hinge arms, 38 the 13rd revolute pairs, 39 the 14th rotate Pair, 40 the 8th hinge arms, 41 the 15th revolute pairs, 42 the 16th revolute pairs, 43 second work platformses, 44 second portion's rollers, 45 second hocks, 46 second hock Special arms, 47 second air rammer cylinders, 48 second piston rod tops, 49 auxiliary oil cylinder outer walls, 50 Infrared emitting and reflection accept assembly, 51 hydraulic oil containers, 52 drainage screens, 53 gear oil pumps, 54 pressure regulator valves, 55 check valves, 56 first oil return pipes, 57 pressure-regulating overflow pipelines, 58 first hydraulic electromagnetic guiding valves, the electromagnetism iron wire of 59 first hydraulic electromagnetic guiding valves Circle, 60 second hydraulic electromagnetic guiding valves, 61 second hydraulic electromagnetic guiding valve electromagnet coils, 62 first oil feed lines, 63 second fuel feeding Pipeline, 64 photoelectricity normally open contacts, 65 air slides, 66 master cylinder rodless cavities, 67 auxiliary oil cylinder rodless cavities, 68 master cylinder rod chambers, 69 auxiliary oil cylinder rod chambers, 70 access pipelines, 71 high-pressure air source, and 72 series winding oil pipes, 73 fuse protectors in groups, 74 external power supplys are total Switch, 75 A.C. contactors, 76 overload protective devices, 77 three-phase alternating-current motors, 78 transformators, 79 first fuses, 80 signals Lamp, 81 photoswitch circuits, 82 A.C. contactor electromagnet coils, 83 normally closed interlocks, 84 second fuses, 85 pneumatic operated valve electromagnetism Iron coil, 86 time relay electromagnet coils, 87 scram buttons, 88 first inching buttons, 89 second inching buttons, 90 the 3rd Inching button, 91 linkage button groups, 92 normally closed time delay breaking-off contacts, 93 normally opened timing closing contacts, 94 first minimum gag lever posts, 95 second minimum gag lever posts, 96 the 3rd minimum gag lever posts, 97 the 4th minimum gag lever posts.

Detailed description of the invention

Below in conjunction with the accompanying drawing of embodiment, the invention will be further described, it will help the public is to this case technology contents With the understanding of effect, but the description of embodiment is not intended that the restriction to the technical program, any is made according to this case design The pro forma equivalent transformation that is only gone out is regarded as the category of this case technical scheme.

From each accompanying drawing, with the first revolute pair 2 turns on the first bedframe 1 of embodiment of the present invention master cylinder lifting machine Dynamic connection the first hinge arms 3；The lower end of the second hinge arms 4 rotates and couples the first roller 5, the guide pass of the first bedframe 1 With the first roller 5 in rolling bearing shape；First hinge arms 3 is implemented rotation at the second revolute pair 6 and is coupled with the second hinge arms 4； First Teethed bolt lock buckle 7 and master cylinder 8 outer wall are implemented to be fixedly connected；At lower end Duan tri-revolute pair 9 of master cylinder 8 implement with The rotation of the first hinge arms 3 couples, and main oil cylinder piston bar 25 upper end section in master cylinder 8 is implemented and the at the 4th revolute pair 11 The rotation of three hinge arms 10 couples；With the 5th revolute pair 12, with the 3rd hinge arms, the first hinge arms 3 is implemented rotation to couple；Second Hinge arms 4 is implemented to couple with the rotation of the 4th hinge arms 14 at the 6th revolute pair 13；The 3rd hinge is implemented with the 7th revolute pair 15 Chain arm 10 couples with the rotation of the 4th hinge arms 14；The upper end section of the 3rd hinge arms 10 is implemented and first at the 8th revolute pair 16 The rotation of work platforms 17 couples, and rotates at the upper end section of the 4th hinge arms 14 and couple First portion roller 18, First portion Roller 18 sets guide pass in supporting the first work platforms 17 with rolling shape；Implement the teeth groove with the first Teethed bolt lock buckle 7 to nibble The first hock 19 closed or separate is connected firmly the bottom at the first hock Special arm 20, the upper end of the first hock Special arm 20 Implement the rotation with the 3rd hinge arms coaxially to couple with main oil cylinder piston bar 25 with the 4th revolute pair 11；Special at the first hock The lower end section of arm 20 is provided with the first air rammer cylinder 21 with connecting firmly；The first piston masthead head 22 of the first air rammer cylinder 21 with When master cylinder outer wall 23 engages, the teeth groove of the first hock 19 and the first Teethed bolt lock buckle 7 is released state, first piston masthead head During its air rammer cylinder body of 22 retractions, the teeth groove of the first hock 19 and the first Teethed bolt lock buckle 7 is engagement；In the first work Make to be fixedly disposed at platform 17 right flank the infrared reflection plate 24 of complete photoelectric switch；At auxiliary oil cylinder lifting machine Rotate with the 9th revolute pair 27 on second bedframe 26 and couple the 5th hinge arms 28；The lower end of the 6th hinge arms 29 rotates connection Connecing the second roller 30, the guide pass of the second bedframe 26 and the second roller 30 are in rolling bearing shape；5th hinge arms 28 and Six hinge arms 29 are implemented to rotate connection at the tenth revolute pair 31；Second Teethed bolt lock buckle 32 is implemented solid with the outer wall of auxiliary oil cylinder 33 Fixed connection；Implement at lower end Duan 11 revolute pair 34 of auxiliary oil cylinder 33 to couple with the rotation of the 5th hinge arms 28, auxiliary oil cylinder Auxiliary oil cylinder piston rod 35 upper end section in 33 is implemented to couple with the rotation of the 7th hinge arms 37 at the 12nd revolute pair 36；With 5th hinge arms 28 is implemented rotation and is coupled by 13 revolute pairs 38 with the 7th hinge arms 37；6th hinge arms 29 rotates the 14th Implement to couple with the rotation of the 8th hinge arms 40 at secondary 39；The 7th hinge arms 37 and the 8th hinge is implemented with the 15th revolute pair 41 The rotation of arm 40 couples；The upper end section of the 7th hinge arms 37 implement at the 16th revolute pair 42 with the second work platforms 43 turn Dynamic connection, and rotate at the upper end section of the 8th hinge arms 40 and couple second portion's roller 44, second portion's roller 44 is in rolling shape Guide pass is set in ground supporting the second work platforms 43；Implement the engagement of the teeth groove with the second Teethed bolt lock buckle 32 or separate second Hock 45 is connected firmly the bottom at the second hock Special arm 46, the upper end of the second hock Special arm 46 and auxiliary oil cylinder piston rod 35 rotations implemented coaxially with the 12nd revolute pair 36 with the 7th hinge arms 37 couple, in the lower end of the second hock Special arm 46 Section is provided with the second air rammer cylinder 47 with connecting firmly；In second air rammer cylinder 47 second piston rod top 48 with auxiliary oil cylinder outside When wall 49 engages, the second hock 45 and the second Teethed bolt lock buckle 32 teeth groove are released state, the second piston rod come directly towards 48 retractions its During air rammer cylinder body, the teeth groove of the second hock 45 and the second Teethed bolt lock buckle 32 is engagement；Flat in the second work again The infrared emitting being fixedly disposed complete photoelectric switch at platform 43 left surface accepts assembly 50 with reflection；Described The first minimum gag lever post 94 and the second minimum gag lever post 95 it is respectively equipped with, for the first work on first bedframe 1 liang side position Make protectiveness when extreme lower position is down to by platform 17 spacing；Two side positions of described second bedframe 26 are respectively equipped with Three minimum gag lever post 96 and the 4th minimum gag lever posts 97, the protectiveness limit when extreme lower position is down to by the second work platforms 43 Position；In double shearing type lifter hydraulic systems, it is provided with hydraulic oil container 51, is provided with between gear oil pump 53 and hydraulic oil container 51 Drainage screen 52, has set gradually check valve the 55, first hydraulic electromagnetic guiding valve 58 and on the oil-out pipeline of gear oil pump 53 One oil feed line the 62, second oil feed line 63, and: make the first oil feed line 62 access master cylinder rodless cavity 66, make the second fuel feeding Pipeline 63 accesses the series winding oil pipe 72 of master cylinder rod chamber 68 and auxiliary oil cylinder rodless cavity 67；At check valve 55 and the first hydraulic electromagnetic Pick out to oil circuit top set between guiding valve 58 string and have the first oil return pipe 56 of the second hydraulic electromagnetic guiding valve 60；Check valve 55 with Pick out to oil circuit top set between gear oil pump 53 string and have the pressure-regulating overflow pipeline 57 of pressure regulator valve 54；

The application main circuit of 380 volts of three-phase alternating-current supplies and electronic it is provided with in the electric-control system of double shearing type lifters Machine, includes the in groups fuse protector 73 ad hoc in 380 volts AC points of incoming cables, external power supply main switch in its main circuit 74, A.C. contactor 75 and the outlet of overload protective device 76 access three-phase alternating-current motor 77；Always open at external power supply again Close and take A phase electricity on the leading-out wire pile crown of 74 with C phase electricity as two electricity of transformator 78 primary coil of power supply needed for control loop Source incoming end, secondary coil two outfan of this transformator 78 forms the low-voltage AC power supply of 26 volts via the first fuse 79 Access Control circuit, and through being accessed the DC control circuit of 24 volts by the second fuse 84 after bridge-type ballast, and Described control circuit is parallel with signal lights 80 circuit, for controlling the electromagnetism iron wire of the first hydraulic electromagnetic guiding valve 58 liquid stream commutation Enclose electric photoswitch circuit 81 with dead electricity, for control A.C. contactor electromagnet coil 82 electric, dead electricity and concatenating There is the push-botton operation circuit of the normally closed interlock 83 of overload protective device 76, for controlling the second hydraulic electromagnetic guiding valve 60 oil circuit break-make Second hydraulic electromagnetic guiding valve electromagnet coil 61 obtains electric and dead electricity, the pneumatic operated valve electromagnetism iron wire of control air slide 65 air flue commutation Circle 85 and time relay electromagnet coil 86 obtain electric, the Circuits System of dead electricity；In described circuit, it is respectively provided with jerk Button the 87, first inching button the 88, second inching button 89, thirdly move button 90 and linkage button groups 91, again control electricity Road is provided with the normally closed time delay breaking-off contact 92 carried by the time relay, normally opened timing closing contact 93 and photoswitch electricity Photoelectricity normally open contact 64 in road 81；

The access pipeline 70 of the air slide 65 arranged in the pneumatic system of double shearing type lifters is communicated to high-pressure air source 71。

The mechanical mechanism of the hydraulic circuit of the present invention, pneumatic circuit and the double shearing type lifter of electric control circuit combination is four one Body ground collaborative work, especially with the performance characteristics of photoswitch, the oil circuit commutation and the time that effectively control magnetic slide valve set up, Automatically the first work platforms and second work platforms difference in height in synchronous lifting are compensated, it is ensured that the peace of lifting machine overall operation Quan Xing, by each principle of above division and construction features and then to remake use operating instruction as follows:

First, when pressing the second inching button 89, the alternating voltage of 26 volts is just added to A.C. contactor electromagnetism iron wire Enclosing 82 two ends, the normally closed interlock 83 of overload protective device 76 is energized the most simultaneously, A.C. contactor electromagnet coil 82 electric after, exchange The three-phase main contact of catalyst 75 just closes conduction, and three-phase alternating-current motor energising starts driven gear oil pump 53 rotary work, Make the hydraulic oil in hydraulic oil container 51 through drainage screen 52, gear oil pump 53, the inside of check valve the 55, first hydraulic electromagnetic guiding valve 58 Normal open oil circuit press-in master cylinder rodless cavity 66, promotes main oil cylinder piston bar 25 to strut rotationally at the 4th revolute pair 11 to be formed 3rd hinge arms 10, thus cause first hinge arms the 3, second hinge arms the 4, the 3rd hinge arms the 10, the 4th hinge arms 14 with first Revolute pair the 2, second revolute pair the 6, the 3rd revolute pair the 9, the 5th revolute pair the 12, the 6th revolute pair the 13, the 7th revolute pair the 15, the 8th Revolute pair 16 rotary shaft everywhere is supporting, in the first work platforms 17 and contained load thereof being lifted, now with cutting contracting shape Hydraulic oil in master cylinder rod chamber 68 extruded constantly by the piston ring of the main oil cylinder piston bar 25 in up and through series winding oil Pipe 72 is pressed into auxiliary oil cylinder rodless cavity 67, so that auxiliary oil cylinder piston rod 35 struts the 7th hinge at the 12nd revolute pair 36 rotationally Chain arm 37, cause the 5th hinge arms the 28, the 6th hinge arms the 29, the 7th hinge arms the 37, the 8th hinge arms 40 with the 9th revolute pair 27, Tenth revolute pair the 31, the 11st revolute pair the 34, the 13rd revolute pair the 38, the 14th revolute pair the 39, the 15th revolute pair the 41, the tenth Six revolute pairs 42 rotary shaft everywhere is supporting, in the second work platforms 43 and contained load thereof being lifted with cutting contracting shape；From In airtight hydraulic system, master cylinder 8 is consistent with the structural parameters of auxiliary oil cylinder 33 theoretically, the knot of each hinge movement mechanism Structure parameter is the most basically identical, and main oil cylinder piston bar 25 quite causes with auxiliary oil cylinder piston rod 35 released amount within the identical time period Master cylinder lifting machine assembly, the first work platforms 17 of auxiliary oil cylinder lifting machine assembly are able to same with the rising of the second work platforms 43 Step.In traditional operator scheme, if the consistent of such as hydraulic system leakage, major-minor cylinder structure and motion parameter occurs During the situation such as property is poor, there is the inconsistent of height and position in the work platforms that described two cylinder piston rods will be caused to be lifted, It is likely to result in the danger of the inclination of contained vehicle to be safeguarded；Making the pair of during lifting machine work platforms lifts loaded article If over proof bearing capacity of elevation and subsidence mechanical occurs, when i.e. transshipping, the electrical appliance three-phase alternating-current motor in main circuit 77 Raw overload, flows through the electric current of heater element in overload protective device 76 excessive, makes bolt sheet metal distort and make thermorelay action, its Normally closed interlock 83 in controlling loop disconnects, and causes A.C. contactor electromagnet coil 82 dead electricity, causes in primary line loop A.C. contactor 75 in three-phase main contact disconnect, make three-phase alternating-current motor 77 power-off and out of service pair of shearing type lifting Machine；Again when abnormal conditions occur in whole machinery, the work of liquid electricity system, it is possible to press scram button 87, cutting-off controlling loop Working power, lifting machine also can quit work；First work platforms 17 of affiliated double shearing type lifters and the second work are flat Platform 43 is when the arbitrary height lifted to impulse stroke scope, and the first hock 19 and the first Teethed bolt lock buckle 7 are in completely Profile of tooth engagement, the second hock 45 and the second Teethed bolt lock buckle 32, in profile of tooth engagement completely, make the double shear under load The described work platforms of formula lifting machine is stablized at required height and position and is locked；When operator presses linkage button groups 91 Time, 26 volts AC add through the Guan Bi contact of linkage button groups 91 body and the normally closed time delay breaking-off contact 92 of the time relay To the normally closed interlock 83 of A.C. contactor electromagnet coil 82 and overload protective device 76, make A.C. contactor 75 in primary line loop In three-phase main contact Guan Bi, three-phase alternating-current motor 77 be energized work starter receiver oil pump 53 rotate carry out oil suction and force feed, Make hydraulic system normally work, promote the first work platforms 17 of double shearing type lifter and the second work platforms 43 to rise simultaneously, And the setting so operating the time period of rising is when being by the time delay of the normally closed time delay breaking-off contact 92 in energization delay relay Between the size of setting determine, i.e. when the time change reach the time delays limit that energization delay relay sets time, often Close time delay breaking-off contact 92 automatic shutoff circuit, A.C. contactor electromagnet coil 82 dead electricity in control circuit, should in main circuit The three-phase main contact of A.C. contactor 75 disconnects, and the gear oil pump 53 in hydraulic system quits work, double shearing type lifters that is Carve and stop Yang Sheng；Note, after linkage button groups 91 is pressed, the time relay electromagnet coil 86 of energization delay relay Electricity, air slide electromagnet coil 85 simultaneously electric, the displacement commutation of the spool of air slide 65, make high-pressure air source 71 approach access Pipeline 70, air slide 65 are pressed into rodless cavity and the rodless cavity of the second air rammer cylinder 47 of the first air rammer cylinder 21 simultaneously, Make first piston masthead head 22 and the second piston rod come directly towards for 48 moments and push up the master cylinder outer wall 23 with each auto correlation and pair respectively On oil cylinder outer wall 49, the first hock 19 is caused to follow the first hock Special arm 20 connected firmly with it around the axle center of the 4th revolute pair 11 Line turns over a special angle clockwise, makes the first hock 19 separate with the denticle of the first Teethed bolt lock buckle 7, causes the second tooth simultaneously Pawl 45 is followed the second hock Special arm 46 connected firmly with it and is turned over a specific angle counterclockwise around the axial line of the 12nd revolute pair 36 Degree, makes the second hock 45 separate with the denticle of the second Teethed bolt lock buckle 32, say, that when linkage button groups 91 is pressed moment, Pneumatic apparatus work causes the first hock 19 to separate with the denticle of the first Teethed bolt lock buckle 7, the second hock 45 and the second tooth The denticle of bar locking board 32 separates, and the A.C. contactor electromagnet coil 82 that needs smoothly of this separation process is energized, and makes act The machine of liter is maintained at the state risen, and when described hock does not engages with corresponding Teethed bolt lock buckle, normally closed time delay disconnects touches 92 just press the time periods that energization delay relay sets disconnects the three-phase alternating-current supply power supply to motor, and normally opened time delay is closed Close contact 93 and also press the time period Guan Bi that energization delay relay sets, make the second hydraulic electromagnetic guiding valve electromagnet coil 61 obtain Electricity, the displacement liquid stream commutation of its spool, make hydraulic oil enter the first oil return pipe 56, hydraulic oil container through the second hydraulic electromagnetic guiding valve 60 51, make double shearing type lifter decline, again due to each hock and corresponding Teethed bolt lock buckle in double shearing type lifter uphill process Denticle contact in conjunction with shape drag, nibble when the profile of described hock with the denticle of corresponding Teethed bolt lock buckle is Separate during conjunction, therefore when double shearing type lifters stop suddenly at a certain height and position, may not necessarily ensure that hock is with corresponding The denticle of Teethed bolt lock buckle realizes spacing required excellent engagement, therefore needs to arrange the 3rd especially in control circuit Inching button 90, thirdly moves button 90 when pressing, the second hydraulic electromagnetic guiding valve electromagnet coil 61 electric, make the hydraulic oil can be through Second hydraulic electromagnetic guiding valve 60 ditch passes to hydraulic oil container 51, causes double shearing type lifter to make the decline of appropriateness and reach the first tooth The denticle of pawl 19 and the first Teethed bolt lock buckle 7 realizes preferably engaging, and reaches the second hock 45 and the second Teethed bolt lock buckle 32 Denticle realizes preferably engagement, due to new double shearing type lifters its master cylinder 8 and auxiliary oil cylinder before formally coming into operation assembled 33 equal oil-free, therefore it is provided with again the first inching button 88 in controlling loop, when repeatedly pressing the first inching button 88 crawl, The period alternating current of 26 volts is just added to the first hydraulic electromagnetic guiding valve electromagnet coil 59, makes the first of normal opened type bi-bit bi-pass The mobile spool of hydraulic electromagnetic guiding valve 58 shifts and causes liquid stream commutation, the liquid that gear oil pump 53 just will stem from hydraulic oil container 51 The master cylinder rod chamber 68 of the internal oil passages press-in master cylinder 8 of force feed approach check valve the 55, first hydraulic electromagnetic guiding valve 58 and pair The auxiliary oil cylinder rodless cavity 67 of oil cylinder 33, by making the progressively adjustment of master cylinder rod chamber 68 and auxiliary oil cylinder rodless cavity 67 injection flow First work platforms 17 and the second work platforms 43 are positioned at same level position.Double shearing type lifters are normally being lifted use In, when two level differences of the first work platforms 17 and the second work platforms 43 are in standard allowed band, it is arranged on The photoswitch infrared reflection plate 24 of the first work platforms 17 side is with the photoelectricity being arranged on the second work platforms 43 side The infrared emitting of switch and reflection accept combination physical ability and normally carry out ultrared transmitting, reflect and receive reflection, so The photoelectricity normally open contact 64 being positioned in control circuit in photoswitch circuit 81 for disconnecting shape, but when the first work platforms 17 with When the difference in height of two planes of the second work platforms 43 is beyond standard allowed band, the infrared emitting of photoswitch, reflection Cannot be normally carried out with receiving transmitting, now the related elements in photoswitch circuit 81 will make photoswitch with the signal of telecommunication Carry relay coil and be passed through the alternating current of 26 volts, this make and the first hydraulic electromagnetic guiding valve from the dynamic iron core of tape relay The photoelectricity normally open contact 64 belonging to photoswitch of electromagnet coil 59 concatenation closes, the electromagnetism of such first hydraulic electromagnetic guiding valve Iron coil 59 obtains electric, and hydraulic oil will be forced rearwardly into auxiliary oil cylinder rodless cavity 67 changing, and makes the second work being in lower position flat Rise to being compensated property of platform 43, thus reach its flat surface with the first work platforms 17 and be in same level position, work as light The infrared emitting of electric switch, reflect and receive reflection when can be normally carried out, the related elements in photoswitch circuit 81 Function will recover the off-state of photoelectricity normally open contact 64, so that electromagnet coil 59 dead electricity of the first hydraulic electromagnetic guiding valve, Under the promotion of the spring force of the first hydraulic electromagnetic guiding valve 58 stage clip the most therein, the fuel feeding to hydraulic system is made to recover to continuing Synchronize to rise master cylinder lifting machine and the duty of auxiliary oil cylinder lifting machine.

Claims (4)

1. can automatically compensate double shearing type lifters for difference in height, total including master cylinder lifting machine assembly, auxiliary oil cylinder lifting machine One-tenth, electric-control system, hydraulic system and pneumatic system, is characterized in that: with on first bedframe (1) of master cylinder lifting machine One revolute pair (2) rotates and couples the first hinge arms (3)；The lower end of the second hinge arms (4) rotates and couples the first roller (5), the The guide pass of one bedframe (1) and the first roller (5) are in rolling bearing shape；First hinge arms (3) and the second hinge arms (4) exist Second revolute pair (6) place implements to rotate connection；First Teethed bolt lock buckle (7) and master cylinder (8) outer wall are implemented to be fixedly connected；Main oil Lower end Duan tri-revolute pair (9) place of cylinder (8) implements to couple with the rotation of the first hinge arms (3), the main oil in master cylinder (8) Cylinder piston rod (25) upper end section is implemented to couple with the rotation of the 3rd hinge arms (10) at the 4th revolute pair (11) place；Rotate with the 5th First hinge arms (3) is implemented rotation with the 3rd hinge arms (10) and is coupled by secondary (12)；Second hinge arms (4) is in the 6th revolute pair (13) place implements to couple with the rotation of the 4th hinge arms (14)；The 3rd hinge arms (10) and the 4th is implemented with the 7th revolute pair (15) The rotation of hinge arms (14) couples；The upper end section of the 3rd hinge arms (10) is implemented flat with the first work at the 8th revolute pair (16) place The rotation of platform (17) couples, and rotates First portion roller (18) that couples at the upper end section of the 4th hinge arms (14), First portion Roller (18) sets guide pass in supporting the first work platforms (17) with rolling shape；Implement and the first Teethed bolt lock buckle (7) Teeth groove engagement or the first hock (19) separated are connected firmly the bottom at the first hock Special arm (20)；Special at the first hock The lower end section of arm (20) is provided with the first air rammer cylinder (21) with connecting firmly；The first piston masthead of the first air rammer cylinder (21) When head (22) engages with master cylinder outer wall (23), the first hock (19) is released state with the teeth groove of the first Teethed bolt lock buckle (7), During its air rammer cylinder body of first piston masthead head (22) retraction, the first hock (19) and the tooth of the first Teethed bolt lock buckle (7) Groove is engagement；The infrared ray being fixedly disposed complete photoelectric switch at the first work platforms (17) right flank is anti- Penetrate plate (24)；Second bedframe (26) of auxiliary oil cylinder lifting machine rotates with the 9th revolute pair (27) and couples the 5th hinge arms (28)；The lower end of the 6th hinge arms (29) rotates and couples the second roller (30), the guide pass of the second bedframe (26) and the Second wheel (30) is in rolling bearing shape；5th hinge arms (28) is implemented to turn at the tenth revolute pair (31) place with the 6th hinge arms (29) Dynamic connection；Second Teethed bolt lock buckle (32) is fixedly connected with the outer wall enforcement of auxiliary oil cylinder (33)；The lower end section of auxiliary oil cylinder (33) exists 11st revolute pair (34) place implements to couple with the rotation of the 5th hinge arms (28), the auxiliary oil cylinder piston rod in auxiliary oil cylinder (33) (35) upper end section is implemented to couple with the rotation of the 7th hinge arms (37) at the 12nd revolute pair (36) place；With the 13rd revolute pair (38) with the 7th hinge arms (37), the 5th hinge arms (28) is implemented rotation to couple；6th hinge arms (29) is in the 14th revolute pair (39) place implements to couple with the rotation of the 8th hinge arms (40)；The 7th hinge arms (37) and the is implemented with the 15th revolute pair (41) The rotation of eight hinge arms (40) couples；The upper end section of the 7th hinge arms (37) is implemented and the second work at the 16th revolute pair (42) place The rotation making platform (43) couples, and rotates at the upper end section of the 8th hinge arms (40) and couple second portion's roller (44), and second Platform portion roller (44) sets guide pass in supporting the second work platforms (43) with rolling shape；Implement and the second Teethed bolt lock buckle (32) teeth groove engagement or second hock (45) of separation are connected firmly the bottom at the second hock Special arm (46), at the second tooth The lower end section of pawl Special arm (46) is provided with the second air rammer cylinder (47) with connecting firmly；In second air rammer cylinder (47) second When piston rod top (48) engages with auxiliary oil cylinder outer wall (49), the second hock (45) and the second Teethed bolt lock buckle (32) teeth groove are for dividing From state, during second piston rod top its air rammer cylinder body of (48) retraction, the second hock (45) and the second Teethed bolt lock buckle (32) teeth groove is engagement；It has been fixedly disposed complete photoelectric switch again at the second work platforms (43) left surface Infrared emitting and reflection accept assembly (50)；

In double shearing type lifter hydraulic systems, be provided with hydraulic oil container (51), gear oil pump (53) and hydraulic oil container (51) it Between be provided with drainage screen (52), the oil-out pipeline of gear oil pump (53) has set gradually check valve (55), first hydraulic pressure electricity Magnetic guiding valve (58) and the first oil feed line (62), the second oil feed line (63), and: make the first oil feed line (62) access master cylinder Rodless cavity (66), makes the second oil feed line (63) access the series winding oil pipe of master cylinder rod chamber (68) and auxiliary oil cylinder rodless cavity (67) (72)；Oil circuit top set between check valve (55) and the first hydraulic electromagnetic guiding valve (58) picking out string has the second hydraulic electromagnetic First oil return pipe (56) of guiding valve (60)；Pick out string to oil circuit top set between check valve (55) and gear oil pump (53) to have The pressure-regulating overflow pipeline (57) of pressure regulator valve (54)；

Main circuit and the motor of 380 volts of three-phase alternating-current supplies of application it is provided with in the electric-control system of double shearing type lifters, Its main circuit includes the in groups fuse protector (73) the most ad hoc from 380 volts AC points of incoming cables, external power supply total Switch (74), A.C. contactor (75) and the three-phase alternating-current motor (77) accessed in overload protective device (76) outlet；Exist again A phase electricity is taken with C phase electricity as the transformator of power supply needed for control loop on the leading-out wire pile crown of external power supply main switch (74) (78) two power access ends of primary coil, secondary coil two outfan of this transformator (78) forms the low-voltage of 26 volts and hands over Stream power supply, the power output end formed at this transformator (78) secondary coil accesses the first fuse (79), is parallel with signal lights (80), couple and have the electromagnet coil for controlling the first hydraulic electromagnetic guiding valve (58) liquid stream commutation to obtain the electric light with dead electricity and establish by cable Close, couple and have the first inching button (88), linkage button groups (91), be provided with the normally closed time delay carried by the time relay and disconnect Contact (92), couples and has the photoelectricity normally open contact (64) in photoswitch circuit (81), couples and has control the first hydraulic electromagnetic sliding The electromagnet coil (59) of valve (58) liquid stream commutation, couples and has the second inching button (89), couples and has A.C. contactor electric magnet Coil (82) and being used for control A.C. contactor electromagnet coil (82) electric, dead electricity and be serially connected with overload protective device (76) Normally closed interlock (83)；The DC control circuit of 24 volts after bridge-type ballast accesses the second fuse (84), accesses the Three inching buttons (90) and linkage button groups (91), accessed the normally opened timing closing contact (93) carried by the time relay, Access the second hydraulic electromagnetic guiding valve electromagnet coil (61) for controlling the second hydraulic electromagnetic guiding valve (60) oil circuit break-make, connect Enter the pneumatic operated valve electromagnet coil (85) for controlling the commutation of air slide (65) air flue and time relay electromagnet coil (86)；Scram button (87) it is provided with again on the power input line road of the primary coil of mains transformer (78)；

The access pipeline (70) of the air slide (65) arranged in the pneumatic system of double shearing type lifters is communicated to high-pressure air source (71).

A kind of double shearing type lifters that can automatically compensate difference in height the most according to claim 1, is characterized in that: described first The upper end of hock Special arm (20) is implemented and the 3rd hinge with the 4th revolute pair (11) coaxially with main oil cylinder piston bar (25) The rotation of arm (10) couples.

A kind of double shearing type lifters that can automatically compensate difference in height the most according to claim 1, is characterized in that: described second The upper end of hock Special arm (46) is implemented and the 7th hinge with the 12nd revolute pair (36) coaxially with auxiliary oil cylinder piston rod (35) The rotation of chain arm (37) couples.

A kind of double shearing type lifters that can automatically compensate difference in height the most according to claim 1, is characterized in that: described The first minimum gag lever post (94) and the second minimum gag lever post (95) it is respectively equipped with on one bedframe (1) two side position；Described The 3rd minimum gag lever post (96) and the 4th minimum gag lever post (97) it is respectively equipped with on two side positions of the second bedframe (26).