CN102068136B - Energy-accumulating back pressure type large dynamic special-effect movie audience platform - Google Patents
Energy-accumulating back pressure type large dynamic special-effect movie audience platform Download PDFInfo
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- CN102068136B CN102068136B CN201110048121XA CN201110048121A CN102068136B CN 102068136 B CN102068136 B CN 102068136B CN 201110048121X A CN201110048121X A CN 201110048121XA CN 201110048121 A CN201110048121 A CN 201110048121A CN 102068136 B CN102068136 B CN 102068136B
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Abstract
The invention discloses an energy-accumulating back pressure type large dynamic special-effect movie audience platform. The purpose of the invention is to solve the problem that the reality of the simulation effect of the prior art is not good. The platform comprises a platform framework, a hydraulic power system, four auxiliary support legs and two cushioning support legs, and the auxiliary support legs and the cushioning support legs are vertically and evenly distributed on the bottom of the platform framework. A No.1 oil cylinder, a No.2 oil cylinder, a No.3 oil cylinder and a No.4 oil cylinder in the hydraulic power system and the four auxiliary support legs are arranged side by side. The hydraulic power system comprises a main oil supply circuit, an energy-accumulating back pressure oil circuit and a control and return oil circuit. Synchronous shut motors for uniformly supplying oil in the main oil supply circuit are connected with the lower pipes of the No.1 oil cylinder, the No.2 oil cylinder, the No.3 oil cylinder and the No.4 oil cylinder. When the platform framework in the energy-accumulating back pressure oil circuit goes down, a No.1 energy accumulator for quickly supplying oil is connected with the upper pipes of the No.1 oil cylinder, the No.2 oil cylinder, the No.3 oil cylinder and the No.4 oil cylinder. Four pilot-operated check valves in the control and return oil circuit are respectively connected with four electromagnetic reversing valves to carry out quick oil discharge. The falling of the platform framework can intensify the weightless sense of audience.
Description
Technical field
The present invention relates to a kind of large-scale spectators' vivid platform of accumulation of energy back pressure type special efficacy film that belongs to the held hundreds of people of film amusement equipment technical field.
Background technology
Along with the fast development of motion picture technique, people are also increasingly high to the requirement of the inherent quality of film itself and on-the-spot evaluation equipment.The 4D simulation film that on the traditional film basis, develops and come is more and more favored by people; The 4D simulation film is to utilize the stereoscopic picture plane stunt of 3D film itself to combine with the environment special efficacy and the ingenious of multidimensional seat of spectators' periphery; Produce the 4D dynamic effect; Audience is incorporated among the virtual scene, makes it produce sensation on the spot in person, increased sight, interest and the excitant of film greatly.Present domestic spectators' platform basically all is fixed; Have on some platforms multidimensional seat is installed; Seat can cooperate film plot to realize simply moving, wave, shaking; But a weak spot of general character is that seat bust action effect in vertical direction is unsatisfactory, for large-scale shock scene as fall, the simulate effect sense of reality such as earthquake, volcano eruption is not strong.Therefore; If a large-scale Spectator Seating can be arranged, can fall with very big acceleration suddenly on the vertical direction, near freely falling body; Just can simulate the medium-and-large-sized shock scene of film; Truly stimulate with strong to spectators, and if cooperate upward multidimensional seat again, just can build virtual scene more true to nature.
Summary of the invention
Technical problem to be solved by this invention is to the not strong problem of some the scenario simulation effect sense of reality in the film to viewing equipment; Providing a kind of can produce suddenly near freely falling body whereabouts acceleration according to the motion picture projection plot, falls for spectators produce, the large-scale spectators' vivid platform of accumulation of energy back pressure type special efficacy film of dynamic special efficacys such as earthquake, volcano eruption.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to realize: the large-scale spectators' vivid platform of described accumulation of energy back pressure type special efficacy film comprises platform framework, hydraulic power system, 4 auxiliary supporting legs and 2 buffering supporting legs that structure is identical that structure is identical.
Described hydraulic power system comprises oil cylinder No. 1; No. 2 oil cylinders; No. 3 oil cylinders; No. 4 oil cylinders; Check valve; Overflow valve; The fuel feeding solenoid directional control valve; Oil feed non-return valve; No. 1 accumulator; No. 2 accumulators; The synchronized splitter motor; No. 1 oil return solenoid directional control valve; No. 1 oil return hydraulic control one-way valve; No. 2 oil return solenoid directional control valves; No. 2 oil return hydraulic control one-way valves; No. 3 oil return solenoid directional control valves; No. 3 oil return hydraulic control one-way valves; No. 4 oil return solenoid directional control valves; No. 4 oil return hydraulic control one-way valves; Oil pump and total check valve.
The output of oil pump is connected with the oil inlet and outlet pipeline of No. 1 accumulator through the epicoele of total check valve and No. 1 oil cylinder, No. 2 oil cylinders, No. 3 oil cylinders, No. 4 oil cylinders.
The output of oil pump is connected with the oil-in pipeline of check valve through total check valve, and the oil-out of check valve is connected with the oil-in pipeline of overflow valve with No. 2 accumulator oil inlet and outlets, and the oil-out of overflow valve is connected with the fuel tank pipeline through filter.
The output of oil pump is connected with the pressure hydraulic fluid port P pipeline of fuel feeding solenoid directional control valve through total check valve; The working hole A of fuel feeding solenoid directional control valve is connected with the oil-in pipeline of oil feed non-return valve; The oil-out of oil feed non-return valve is connected with the oil-in pipeline of synchronized splitter motor, and the oil-out of the oil-out of synchronized splitter motor and the cavity of resorption of No. 1 oil cylinder, the cavity of resorption of No. 2 oil cylinders, the cavity of resorption of No. 3 oil cylinders, the cavity of resorption of No. 4 oil cylinders, the oil-out of No. 1 oil return hydraulic control one-way valve, the oil-out of No. 2 oil return hydraulic control one-way valves, No. 3 oil return hydraulic control one-way valves is connected with the oil-out pipeline of No. 4 oil return hydraulic control one-way valves.No. 1 oil return hydraulic control one-way valve, No. 2 oil return hydraulic control one-way valves, No. 3 oil return hydraulic control one-way valves are connected with the fuel tank pipeline with the oil-in of No. 4 oil return hydraulic control one-way valves.The control port of No. 1 oil return hydraulic control one-way valve is connected with the working hole A pipeline of No. 1 oil return solenoid directional control valve; The control port of No. 2 oil return hydraulic control one-way valves is connected with the working hole A pipeline of No. 2 oil return solenoid directional control valves; The control port of No. 3 oil return hydraulic control one-way valves is connected with the working hole A pipeline of No. 3 oil return solenoid directional control valves, and the control port of No. 4 oil return hydraulic control one-way valves is connected with the working hole A pipeline of No. 4 oil return solenoid directional control valves.No. 1 oil return solenoid directional control valve, No. 2 oil return solenoid directional control valves, No. 3 oil return solenoid directional control valves are connected with the pressure hydraulic fluid port P of No. 4 oil return solenoid directional control valves and the oil inlet and outlet pipeline of No. 2 accumulators.No. 1 oil return solenoid directional control valve, No. 2 oil return solenoid directional control valves, No. 3 oil return solenoid directional control valves are connected with the fuel tank pipeline with the oil return opening O of No. 4 oil return solenoid directional control valves.
Platform framework bottom surface described in the technical scheme is evenly equipped with 6 supplemental support points; 2 supplemental support point places in the middle of the platform framework bottom surface vertically are provided with 2 buffering supporting legs that structure is identical; The upper end of the buffering supporting leg that 2 structures are identical is fixedly connected with the longeron on the platform framework bottom surface, and the lower end of buffering supporting leg is fixedly connected with ground through bolt.4 supplemental support points of periphery vertically are provided with the identical auxiliary supporting leg of 4 structures and No. 1 oil cylinder, No. 2 oil cylinders, No. 3 oil cylinders and No. 4 oil cylinders arranged side by side with auxiliary supporting leg.The upper end of the auxiliary supporting leg that 4 structures are identical is fixedly connected with the longeron on the platform framework bottom surface, and the lower end of the auxiliary supporting leg that 4 structures are identical is connected with ground through bolt.No. 1 oil cylinder, No. 2 oil cylinders, No. 3 oil cylinders and the upper end of No. 4 oil cylinders are connected with longeron on the platform framework bottom surface, and No. 1 oil cylinder, No. 2 oil cylinders, No. 3 oil cylinders are fixedly connected with ground through bolt with the lower end of No. 4 oil cylinders; Described buffering supporting leg comprises that No. 3 clamping plate, No. 3 studs, supporting leg and mechanical damping mechanisms form.Described supporting leg is made up of No. 2 upper flange plates, No. 2 lower flanges and No. 2 middle supporting legs.The plate structure spare that No. 2 upper flange plates and No. 2 lower flanges are rectangle, the periphery of No. 2 upper flange plates and No. 2 lower flanges is evenly equipped with bolt hole.Supporting leg is that the steel pipe section bar of rectangle is processed by cross section in the middle of No. 2.No. 2 upper flange plates and No. 2 lower flanges of rectangle adopt the mode of welding to be fixed on the upper and lower end face of supporting leg in the middle of No. 2, the axis of symmetry conllinear of No. 2 upper flange plates, No. 2 lower flanges and No. 2 middle supporting legs, and the upper and lower end face of supporting leg is parallel.Described mechanical damping mechanism comprises base, No. 2 yoke caps, No. 2 sleeves, No. 2 dished spring assemblies.Be evenly equipped with the through hole that adopts screw to be connected with No. 2 built-in fittings of ground on the base, No. 2 sleeve set is fixedly connected on base and through screw.No. 2 dished spring assemblies are sleeved on and are on No. 2 projecting shafts on the base in the sleeve, and No. 2 yoke caps insert between the axle that stretches out on the base and No. 2 sleeves, are matched in clearance between the projecting shaft on No. 2 yoke caps and the base, between No. 2 yoke caps and No. 2 sleeves for closing in the gap.Mechanical damping mechanism is fixedly connected with No. 2 lower flanges of bolt and supporting leg by means of No. 2 yoke caps.No. 2 upper flange plates of supporting leg are fixedly connected through No. 3 clamping plate longeron with No. 3 studs and platform framework bottom surface; Described auxiliary supporting leg comprises No. 1 clamping plate, No. 1 stud, upper flange plate, lower flange and middle supporting leg composition.Described upper flange plate and lower flange are the plate structure spare of rectangle, and the periphery of upper flange plate and lower flange is evenly equipped with bolt hole.Supporting leg is that the steel pipe section bar of rectangle is processed by cross section in the middle of described.The upper flange plate of rectangle and lower flange adopt the mode of welding to be fixed on the upper and lower end face of middle supporting leg, the axis of symmetry conllinear of upper flange plate, lower flange and middle supporting leg, and the upper surface of upper flange plate is parallel with the lower surface of lower flange.The upper flange plate of supporting leg is fixed on the longeron of platform framework bottom surface through No. 1 stud and No. 1 clamping plate in the middle of being fixed on; The lower flange of supporting leg is connected on No. 1 built-in fitting on the ground with caging bolt in the middle of being fixed on, and the nut of caging bolt upper end and the lower flange of auxiliary supporting leg do not contact; Described No. 1 oil cylinder, No. 2 oil cylinders, No. 3 oil cylinders are the identical non-standard oil cylinder of structure with No. 4 oil cylinders.The upper end of No. 1 oil cylinder, No. 2 oil cylinders, No. 3 oil cylinders or No. 4 oil cylinders all is equipped with the identical mechanical damping mechanism of structure, and described mechanical damping mechanism comprises dished spring assembly, dish spring abutment, No. 1 sleeve and No. 1 yoke cap No. 1.Dish spring abutment and No. 1 dished spring assembly are sleeved on the piston rod successively, and the bottom surface of dish spring abutment is connected with the contact of the upper surface of cylinder body, and the lower surface of No. 1 dished spring assembly is connected with the upper surface contact of dish spring abutment.No. 1 sleeve set is on the dish spring abutment, and the employing screw is fixedly connected.No. 1 yoke cap inserts between No. 1 sleeve and the piston rod, is matched in clearance between No. 1 yoke cap and the piston rod, is matched in clearance between No. 1 yoke cap and No. 1 sleeve.The upper end of No. 1 oil cylinder, No. 2 oil cylinders, No. 3 oil cylinders or No. 4 oil cylinders is connected through No. 1 yoke cap, No. 2 clamping plate longeron with No. 2 studs and platform framework bottom surface.The lower end of No. 1 oil cylinder, No. 2 oil cylinders, No. 3 oil cylinders or No. 4 oil cylinders is fixedly connected through No. 1 built-in fitting of bolt and ground; Described platform framework is the tower structure spare of right angled triangle for adopting the steel pipe section bar cross section that is welded.The undermost longeron of platform framework is selected I-steel for use; All the other crossbeams, Tong Liang, column, tiltedly hold, horizontal holding select the rectangular steel pipe section bar for use; The ladder that rises is gradually made on the inclined-plane that platform framework makes progress from the bottom to top; The upper surface of every layer of ladder is laid checkered plates, and then the seat is set, and decorative steel plate is laid in the front of every layer of ladder and the back of platform framework.The periphery of platform framework and the place ahead of every layer of ladder are provided with handrail.
Compared with prior art the invention has the beneficial effects as follows:
1. the large-scale spectators' vivid platform of accumulation of energy back pressure type special efficacy film of the present invention power is sufficient; Stable and reliable operation, owing to adopted accumulation of energy back pressure type fuel supply method and a cylinder two valve formula oil returns configuration, platform can fall suddenly with the acceleration near freely falling body; Cooperate film plot to produce dynamic special efficacys such as whereabouts, earthquake, volcano eruption; Make spectators produce very strong weightless sense, it is interesting to increase viewing, and mechanical cushioning device is installed; Equipment is played a protective role, when spectators experience dynamic special efficacy intense stimulus, also increased spectators' comfort level.
2. the large-scale spectators' vivid platform of accumulation of energy back pressure type special efficacy film of the present invention low cost of manufacture, the carrying number is many, and control oil circuit and oil feeding line that platform descends all adopt the accumulator fuel feeding; Oil pump just cut out automatically after platform raising put in place, practiced thrift mass energy, reduced operating cost; And can be chosen in multidimensional seat is installed on the platform, make dynamic special efficacy more true to nature, have the upgrading potential quality; Have very high cost performance in the use, this is not to use person or enterprise to value and pursue yet.
3. the large-scale spectators' vivid platform of accumulation of energy back pressure type special efficacy film of the present invention is equipped with 6 auxiliary supporting legs, can improve platform security and stability during the platform operation, and when maintenance, can do supplemental support usefulness, and later period maintenance is convenient.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described:
Fig. 1 is the left view that the large-scale spectators' vivid platform of accumulation of energy back pressure type special efficacy film of the present invention structure is formed;
Fig. 2 is the rearview that the large-scale spectators' vivid platform of accumulation of energy back pressure type special efficacy film of the present invention structure is formed;
Fig. 3 is the vertical view that the large-scale spectators' vivid platform of accumulation of energy back pressure type special efficacy film of the present invention structure is formed;
Fig. 4 be the structure of auxiliary supporting leg and oil cylinder in the large-scale spectators' vivid platform of accumulation of energy back pressure type special efficacy film of the present invention form and with the front view of platform framework annexation;
Fig. 5 is that the structure of the buffering supporting leg in the large-scale spectators' vivid platform of accumulation of energy back pressure type special efficacy film of the present invention is formed the front view that reaches with the platform framework annexation;
Fig. 6 is the hydraulic schematic diagram of hydraulic system in the large-scale spectators' vivid platform of accumulation of energy back pressure type special efficacy film of the present invention;
Among the figure: 1. platform framework, No. 2.1 oil cylinders, No. 3.2 oil cylinders, No. 4.3 oil cylinders, No. 5.4 oil cylinders, 6. buffering supporting leg; 7. auxiliary supporting leg, No. 8.1 clamping plate, No. 9.1 studs, 10. longeron, 11. caging bolts, No. 12.1 built-in fittings; 13.2 number clamping plate, No. 14.2 studs, No. 15.1 dished spring assemblies, 16. dish spring abutments, No. 17.1 yoke caps, No. 18.1 sleeves; 19.3 number clamping plate, No. 20.3 studs, 21. bases, No. 22.2 dished spring assemblies, No. 23.2 yoke caps, No. 24.2 sleeves; 25.2 number built-in fitting, 26. check valves, 27. overflow valves, 28. fuel feeding solenoid directional control valves, 29. oil feed non-return valve, No. 30.1 accumulators; 31.2 number accumulator, 32. synchronized splitter motors, No. 33.1 oil return solenoid directional control valves, No. 34.1 oil return hydraulic control one-way valves, No. 35.2 oil return solenoid directional control valves, No. 36.2 oil return hydraulic control one-way valves; 37.3 number oil return solenoid directional control valve, No. 38.3 oil return hydraulic control one-way valves, No. 39.4 oil return solenoid directional control valves, No. 40.4 oil return hydraulic control one-way valves, 41. oil pumps, 42. total check valves.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is explained in detail:
Consult Fig. 1 to Fig. 3; The large-scale spectators' vivid platform of described accumulation of energy back pressure type special efficacy film comprises platform framework 1, supplemental support, hydraulic power system and electric-control system, and wherein: supplemental support comprises 4 auxiliary supporting legs 7 and 2 buffering supporting legs 6 that structure is identical that structure is identical; Hydraulic power system comprises 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders of No. 1 oil cylinder and No. 4 oil cylinders 5.
The tower structure spare that said platform framework 1 adopts the steel pipe section bar to be welded; More particularly; The basic body of platform framework 1 is a tri-prismoid that cross section is a right angled triangle; The hierarchic structure that rises is gradually made on the inclined-plane that platform framework 1 makes progress from the bottom to top, and the upper surface of every layer of ladder is laid checkered plates, and then the seat is set; Decorative steel plate is laid with the back of platform framework 1 in the front of every layer of ladder (vertical plane), and the periphery of platform framework 1 and the place ahead of every layer of ladder all are provided with handrail.Platform framework 1 undermost longeron 10 is selected the strong elongated I-steel of bearing capacity for use, all the other crossbeams, Tong Liang, column, tiltedly hold, horizontal holding select for use rectangular steel pipe to satisfy the requirement of stiffness and strength.See from the top down in addition with the past and see that backward whole flat framework 1 does not have the crack of passing through.The bottom surface of platform framework 1 is evenly equipped with 6 supplemental support points; Promptly longitudinally be symmetrical set 3 supplemental support points of the two every row of row in the bottom surface of platform framework 1; 2 supplemental support point places horizontal and in the middle of the bottom surface along platform framework 1 are furnished with 2 buffering supporting legs 6 that structure is identical; The upper end of buffering supporting leg 6 is fixedly connected with platform framework 1 undermost longeron 10, and the lower end of buffering supporting leg 6 is fixedly connected with ground through bolt.4 strong points of periphery are provided with 4 auxiliary supporting legs 7 that structure is identical, and the upper end of auxiliary supporting leg 7 is fixedly connected with platform framework 1 undermost longeron 10, and the lower end of auxiliary supporting leg 7 is connected with ground through bolt, and totally 6 supporting legs are as supplemental support.At 4 supplemental support point places of periphery promptly the inboard of each auxiliary supporting leg 7 and along 1 identical oil cylinder of structure of vertical layout of platform framework 1; Promptly arrange the up-down of 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders of No. 1 oil cylinder and No. 4 oil cylinder 5 control platform frameworks 1 respectively in the inboard of 4 auxiliary supporting legs 7; 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders of No. 1 oil cylinder are connected with platform framework 1 undermost longeron 10 respectively with the upper end of No. 4 oil cylinders 5; The ring flange of the lower end of No. 1 oil cylinder 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders and No. 4 oil cylinders 5 is evenly equipped with bolt hole respectively, adopts bolt to be fixedly connected with ground.
Consult Fig. 4, auxiliary supporting leg 7 is made up of 8, No. 1 stud 9 of No. 1 clamping plate, caging bolt 11, No. 1 built-in fitting 12, upper flange plate, lower flange and middle supporting leg.Upper flange plate and lower flange are the plate structure spare of rectangle, and the periphery of upper flange plate and lower flange is evenly equipped with bolt hole.
Supporting leg is that the tubing of rectangle is processed by cross section in the middle of described.The upper flange plate of rectangle and lower flange adopt the mode of welding to be separately fixed on the upper and lower end face of middle supporting leg; The axis of symmetry conllinear of upper flange plate, lower flange and middle supporting leg, the upper surface of the upper flange plate in the middle of being weldingly fixed on the supporting leg is parallel with the lower surface of lower flange on being weldingly fixed on the centre supporting leg.
The upper flange plate of supporting leg is fastened on the longeron 10 of platform framework 1 bottom surface through No. 1 stud 9 and No. 1 clamping plate 8 in the middle of being fixed on; The lower flange of supporting leg is connected on No. 1 built-in fitting 12 that is installed on the ground in the middle of being fixed on caging bolt 11; The nut of caging bolt 11 upper ends is not tightened; The lower flange of nut and auxiliary supporting leg 7 keeps a segment distance; Only play position-limiting action; The identical auxiliary supporting leg 7 of 4 structures that is installed in platform framework 1 bottom like this can together go up and down with platform framework 1 in vertical direction under 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders of No. 1 oil cylinder and No. 4 oil cylinders 5 drivings with 2 identical buffering supporting legs 6 of structure; When platform framework 1 operation, play mechanical protection and position-limiting action, when hydraulic system is keeped in repair, can replace 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders of No. 1 oil cylinder and No. 4 oil cylinders 5 to play a supporting role in addition.
Consult Fig. 4,3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders of No. 1 oil cylinder that is adopted among the present invention are the identical non-standard oil cylinder of structure with No. 4 oil cylinders 5, can resist certain side force.The upper end of No. 1 oil cylinder 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders or No. 4 oil cylinders 5 all is equipped with the identical mechanical damping mechanism of structure.Described mechanical damping mechanism comprises dished spring assembly 15,16, No. 1 sleeve 18 of dish spring abutment and No. 1 yoke cap 17 No. 1.
Consult Fig. 5, buffering supporting leg 6 mainly is made up of 19, No. 3 studs of No. 3 clamping plate 20, No. 2 built-in fittings 25, supporting leg and mechanical damping mechanisms.Described supporting leg is made up of No. 2 upper flange plates, No. 2 lower flanges and No. 2 middle supporting legs.The plate structure spare that No. 2 upper flange plates and No. 2 lower flanges are rectangle, the periphery of No. 2 upper flange plates and No. 2 lower flanges is evenly equipped with bolt hole.
Described in the middle of No. 2 supporting legs be that the tubing of rectangle is processed by cross section.No. 2 upper flange plates and No. 2 lower flanges of rectangle adopt the mode of welding to be fixed on the upper and lower end face of supporting leg in the middle of No. 2; The axis of symmetry conllinear of No. 2 upper flange plates, No. 2 lower flanges and No. 2 middle supporting legs, the upper surface that is welded on No. 2 upper flange plates on the supporting leg in the middle of No. 2 is parallel with the lower surface that is welded on the lower flanges on the supporting leg in the middle of No. 2.
Described mechanical damping mechanism comprises 24, No. 2 dished spring assemblies 22 of 23, No. 2 sleeves of 21, No. 2 yoke caps of base.Base 21 is fixed on through screw on No. 2 built-in fittings 25 that are installed on the ground, and No. 2 sleeves 24 are sleeved on the base 21 and through screw and are fixedly connected, and No. 2 dished spring assembly 22 is sleeved on the projecting shaft on the base 21, and is in No. 2 sleeves 24.The upper end that No. 2 yoke caps 23 are sleeved on the projecting shaft on the base 21 is a matched in clearance, and is in No. 2 sleeves 24 and becomes matched in clearance.Mechanical damping mechanism is fixedly connected with No. 2 lower flanges of supporting leg through the upper surface of No. 2 yoke caps 23 and by means of bolt.No. 2 upper flange plates of supporting leg are fixedly connected through No. 3 clamping plate 19 longeron 10 with No. 3 studs 20 and platform framework 1 bottom surface.Embodiment among the present invention adopts 4 groups of dish spring serial connection assemblies to absorb shock loading.
Consult Fig. 6, what represent among the figure is the hydraulic schematic diagram of the hydraulic power system that adopts of the present invention.Described hydraulic power system comprises oil cylinder 2 No. 1; No. 2 oil cylinders 3; No. 3 oil cylinders 4; No. 4 oil cylinders 5; Check valve 26; Overflow valve 27; Fuel feeding solenoid directional control valve 28; Oil feed non-return valve 29; No. 1 accumulator 30; No. 2 accumulators 31; Synchronized splitter motor 32; No. 1 oil return solenoid directional control valve 33; No. 1 oil return hydraulic control one-way valve 34; No. 2 oil return solenoid directional control valves 35; No. 2 oil return hydraulic control one-way valves 36; No. 3 oil return solenoid directional control valves 37; No. 3 oil return hydraulic control one-way valves 38; No. 4 oil return solenoid directional control valves 39; No. 4 oil return hydraulic control one-way valves 40; Oil pump 41 and total check valve 42.
1. the accumulation of energy back-pressure oil circuit of hydraulic power system
The output of oil pump 41 is connected with the oil-in pipeline of total check valve 42, and the oil inlet and outlet of 4, No. 4 oil cylinder 5 epicoeles of oil-out and 3, No. 3 oil cylinders of 2, No. 2 oil cylinders of No. 1 oil cylinder of total check valve 42 is connected with the oil inlet and outlet pipeline of No. 1 accumulator 30.No. 1 accumulator 30 storage hydraulic oils during oil pump 41 work, the nominal volume of No. 1 accumulator 30 is greater than the volume sum of 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders of No. 1 oil cylinder and No. 4 oil cylinder 5 epicoeles.
2. the main fuel feeding road of hydraulic power system
The output of oil pump 41 is connected with the oil-in pipeline of total check valve 42; The oil-out of total check valve 42 is connected with the pressure hydraulic fluid port P pipeline of fuel feeding solenoid directional control valve 28; The working hole A of fuel feeding solenoid directional control valve 28 is connected with the oil-in pipeline of oil feed non-return valve 29; The working hole B of fuel feeding solenoid directional control valve 28 blocks, and the oil return opening O of fuel feeding solenoid directional control valve 28 is connected with the fuel tank pipeline.The oil-out of oil feed non-return valve 29 is connected with the oil-in pipeline of synchronized splitter motor 32, and 4 oil-outs of synchronized splitter motor 32 and the oil inlet and outlet pipeline of No. 1 oil cylinder 2 cavity of resorptions, No. 2 oil cylinder 3 cavity of resorptions, No. 3 oil cylinder 4 cavity of resorptions, No. 4 oil cylinder 5 cavity of resorptions are connected.
3. the control of hydraulic power system and oil return circuit
The output of oil pump 41 is connected with the oil-in pipeline of total check valve 42; The oil-out of total check valve 42 is connected with the oil-in pipeline of check valve 26; The oil-out of check valve 26 is connected with the oil-in pipeline of overflow valve 27 with No. 2 accumulator 31 oil inlet and outlets, and the oil-out of overflow valve 27 is connected with the fuel tank pipeline through filter.
The control port of No. 1 oil return hydraulic control one-way valve 34 is connected with the working hole A pipeline of No. 1 oil return solenoid directional control valve 33; The control port of No. 2 oil return hydraulic control one-way valves 36 is connected with the working hole A pipeline of No. 2 oil return solenoid directional control valves 35; The control port of No. 3 oil return hydraulic control one-way valves 38 is connected with the working hole A pipeline of No. 3 oil return solenoid directional control valves 37, and the control port of No. 4 oil return hydraulic control one-way valves 40 is connected with the working hole A pipeline of No. 4 oil return solenoid directional control valves 39.The pressure hydraulic fluid port P of the pressure hydraulic fluid port P of the pressure hydraulic fluid port P of No. 1 oil return solenoid directional control valve 33, No. 2 oil return solenoid directional control valves 35, No. 3 oil return solenoid directional control valves 37 is connected with the oil inlet and outlet pipeline of the pressure hydraulic fluid port P of No. 4 oil return solenoid directional control valves 39 and No. 2 accumulators 31.The working hole B of the working hole B of No. 1 oil return solenoid directional control valve 33, the working hole B of No. 2 oil return solenoid directional control valves 35, No. 3 oil return solenoid directional control valves (37) and the working hole B of No. 4 oil return solenoid directional control valves 39 block.The oil return opening O of the oil return opening O of No. 1 oil return solenoid directional control valve 33, the oil return opening O of No. 2 oil return solenoid directional control valves 35, No. 3 oil return solenoid directional control valves 37 is connected with the fuel tank pipeline with the oil return opening O of No. 4 oil return solenoid directional control valves 39.The oil-in of the oil-in of the oil-in of No. 1 oil return hydraulic control one-way valve 34, No. 2 oil return hydraulic control one-way valves 36, No. 3 oil return hydraulic control one-way valves 38 is connected with the fuel tank pipeline with the oil-in of No. 4 oil return hydraulic control one-way valves 40.The oil-out of the oil-out of the oil-out of No. 1 oil return hydraulic control one-way valve 34, No. 2 oil return hydraulic control one-way valves 36, No. 3 oil return hydraulic control one-way valves 38 is connected with the cavity of resorption pipeline of No. 4 oil cylinders 5 with (4 oil-outs of synchronized splitter motor 32 reach) No. 13, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders of oil cylinder respectively with the oil-out of No. 4 oil return hydraulic control one-way valves 40.
The operation principle of the large-scale spectators' vivid platform of accumulation of energy back pressure type special efficacy film:
Movie begins; Electric-control system powers up; Oil pump 41 is started working, and the partial pressure oil of oil pump 41 outputs is shunted the cavity of resorption that No. 1 oil cylinder 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders and No. 4 oil cylinders 5 are evenly injected in the back through synchronized splitter motor 32, and another part pressure oil injects the epicoele of No. 1 oil cylinder 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders and No. 4 oil cylinders 5; No. 1 accumulator 30 and No. 2 accumulators 31 begin to store pressure oil simultaneously, have realized accumulation of energy.Because the piston of No. 1 oil cylinder 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders and No. 4 oil cylinders 5 has difference in areas up and down; Piston is slowly to rising, and platform framework 1 steadily raises, after detection platform framework 1 puts in place; Oil pump quits work; Save the energy, 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders of No. 1 oil cylinder and No. 4 oil cylinders 5 are in locking state, and No. 1 accumulator 30 and No. 2 accumulators 31 are in energy accumulating state always.
According to the movie plot; When needing platform framework 1 to fall; Signal is issued 35, No. 3 oil return solenoid directional control valves 37 of 33, No. 2 oil return solenoid directional control valves of No. 1 oil return solenoid directional control valve and No. 4 oil return solenoid directional control valves 39 simultaneously; Make 35, No. 3 oil return solenoid directional control valves 37 of 33, No. 2 oil return solenoid directional control valves of No. 1 oil return solenoid directional control valve and No. 4 oil return solenoid directional control valve 39 transposition cut-in pressure hydraulic fluid port P and working hole A; Pressure oil in No. 2 accumulators 31 is controlled 36, No. 3 oil return hydraulic control one-way valves 38 of 34, No. 2 oil return hydraulic control one-way valves of No. 1 oil return hydraulic control one-way valve and No. 4 oil return hydraulic control one-way valve 40 conductings through 35, No. 3 oil return solenoid directional control valves 37 of 33, No. 2 oil return solenoid directional control valves of No. 1 oil return solenoid directional control valve and No. 4 oil return solenoid directional control valves 39; Under a cylinder two valve formula oil returns configuration; Pressure oil in 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders of No. 1 oil cylinder and No. 4 oil cylinder 5 cavity of resorptions is discharged rapidly through 36, No. 3 oil return hydraulic control one-way valves 38 of 34, No. 2 oil return hydraulic control one-way valves of No. 1 oil return hydraulic control one-way valve and No. 4 oil return hydraulic control one-way valves 40, reduces the piston whereabouts resistance of No. 1 oil cylinder 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders and No. 4 oil cylinders 5.Simultaneously; The epicoele of No. 1 oil cylinder 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders and No. 4 oil cylinders 5 adopts No. 1 accumulator 30 fuel feeding; Delivery rate is fast; Hydraulic oil can be full of the epicoele of No. 1 oil cylinder 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders and No. 4 oil cylinders 5 rapidly; To the piston of No. 1 oil cylinder 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders and No. 4 oil cylinders 5 reverse downward pressure is provided together with load, has realized back-pressure, the piston of No. 1 oil cylinder 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders and No. 4 oil cylinders 5 quickens under the effect of load and upper cavity pressure oil.
Because buffering supporting leg 6 and 4 oil cylinders of platform framework 1 bottom are provided with mechanical damping mechanism, the shockproofness after platform framework 1 falls to putting in place has obtained reduction, has increased spectators' comfort level.After detection platform framework 1 fell to putting in place, oil pump 41 was started working again, stopped after platform framework 1 slow lifting is put in place, for getting ready platform framework 1 whereabouts next time.
The large-scale spectators' vivid platform of accumulation of energy back pressure type special efficacy film of the present invention has adopted the accumulation of energy back-pressure oil circuit of hydraulic power system, and its advantage is:
1. the rise rear pump or output pump 41 that puts in place of platform framework 1 can be closed, and platform framework 1 only need use stored pressure oil in No. 1 accumulator 30 when falling, and platform framework 1 has once been saved the energy at 41 short time switches of oil pump in service once.
2. when platform framework 1 needs to fall suddenly; In order to guarantee very big whereabouts acceleration, use No. 1 accumulator 30 pressure oil to be provided for the epicoele of No. 1 oil cylinder 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders and No. 4 oil cylinders 5, make the piston of No. 1 oil cylinder 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders and No. 4 oil cylinders 5 quicken the buffer brake of whereabouts with load; Comparing fuel feeding with employing oil pump 41 independent fuel feeding wants rapidly; And 3, No. 3 oil cylinders 4 of No. 1 accumulator 30 and 2, No. 2 oil cylinders of No. 1 oil cylinder are directly to be connected with the epicoele of No. 4 oil cylinders 5, have saved various hydraulic valves; Oil circuit is simple; The fuel feeding resistance is little, and platform is fallen rapidly with higher acceleration, and it is more true to nature that spectators' weightlessness falls to feeling.
If only adopt one to recover the oil return that fluid control check valve and oil return solenoid directional control valve unify to control No. 1 oil cylinder 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders and No. 4 oil cylinders 5 in the hydraulic system in the large-scale spectators' vivid platform of accumulation of energy back pressure type special efficacy film of the present invention; Because the pressure oil of No. 1 oil cylinder 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders and No. 4 oil cylinders 5 is all through a valve port oil return; Can cause the oil return speed of No. 1 oil cylinder 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders and No. 4 oil cylinders 5 inconsistent, thereby have influence on the whereabouts acceleration of platform framework 1.The control of the hydraulic power system in the large-scale spectators' vivid platform of accumulation of energy back pressure type special efficacy film of the present invention and oil return circuit have adopted a cylinder two valve formula oil returns configuration; Oil return hydraulic control one-way valve and oil return solenoid directional control valve are respectively installed to each oil cylinder side, have so not only increased the area of local return line, reduce moment oil return resistance; Make oil return rapid; And, owing to the model that between the oil return solenoid directional control valve is pure parallel-connection structure and each oil return solenoid directional control valve is also identical with tubing diameter, as long as therefore receive 1 time falling signal of platform framework; 4 oil return solenoid directional control valves just can be simultaneously, 4 oil cylinders of Synchronization Control fall; Oil return speed is fast, does not also have the inconsistent problem of falling speed, makes platform framework 1 falling speed fast and steady.
Disposed synchronized splitter motor 32 in the main fuel feeding road of the hydraulic power system in the large-scale spectators' vivid platform of accumulation of energy back pressure type special efficacy film of the present invention; Shunt the back fuel feeding earlier; The hydraulic oil that oil pump 41 provides can evenly inject the cavity of resorption of No. 1 oil cylinder 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders and No. 4 oil cylinders 5 through the shunting of synchronized splitter motor 32; Avoided 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders of No. 1 oil cylinder and No. 4 oil cylinder 5 rates of climb inconsistent; Thereby cause platform framework 1 inclination and 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders of No. 1 oil cylinder and No. 4 oil cylinders 5 are produced side forces; Guaranteed that 3, No. 3 oil cylinders 4 of 2, No. 2 oil cylinders of No. 1 oil cylinder and No. 4 oil cylinders 5 rise simultaneously synchronously, made platform framework 1 whole steady the rise.
Claims (5)
1. large-scale spectators' vivid platform of accumulation of energy back pressure type special efficacy film; Comprise platform framework (1), hydraulic power system, 4 auxiliary supporting legs (7) and 2 buffering supporting legs (6) that structure is identical that structure is identical; It is characterized in that described hydraulic power system comprises No. 1 oil cylinder (2), No. 2 oil cylinders (3), No. 3 oil cylinders (4), No. 4 oil cylinders (5), check valve (26), overflow valve (27), fuel feeding solenoid directional control valve (28), oil feed non-return valve (29), No. 1 accumulator (30), No. 2 accumulators (31), synchronized splitter motor (32), No. 1 oil return solenoid directional control valve (33), No. 1 oil return hydraulic control one-way valve (34), No. 2 oil return solenoid directional control valves (35), No. 2 oil return hydraulic control one-way valves (36), No. 3 oil return solenoid directional control valves (37), No. 3 oil return hydraulic control one-way valves (38), No. 4 oil return solenoid directional control valves (39), No. 4 oil return hydraulic control one-way valves (40), oil pump (41) and total check valve (42);
The output of oil pump (41) is connected with the oil inlet and outlet pipeline of No. 1 accumulator (30) through the epicoele of total check valve (42) and No. 1 oil cylinder (2), No. 2 oil cylinders (3), No. 3 oil cylinders (4), No. 4 oil cylinders (5);
The output of oil pump (41) is connected with the oil-in pipeline of check valve (26) through total check valve (42); The oil-out of check valve (26) is connected with the oil-in pipeline of overflow valve (27) with No. 2 accumulators (31) oil inlet and outlet, and the oil-out of overflow valve (27) is connected with the fuel tank pipeline through filter;
The output of oil pump (41) is connected with the pressure hydraulic fluid port P pipeline of fuel feeding solenoid directional control valve (28) through total check valve (42); The working hole A of fuel feeding solenoid directional control valve (28) is connected with the oil-in pipeline of oil feed non-return valve (29); The oil-out of oil feed non-return valve (29) is connected with the oil-in pipeline of synchronized splitter motor (32); The oil-out of the oil-out of the cavity of resorption of the cavity of resorption of the oil-out of synchronized splitter motor (32) and No. 1 oil cylinder (2), the cavity of resorption of No. 2 oil cylinders (3), No. 3 oil cylinders (4), the cavity of resorption of No. 4 oil cylinders (5), No. 1 oil return hydraulic control one-way valve (34), the oil-out of No. 2 oil return hydraulic control one-way valves (36), No. 3 oil return hydraulic control one-way valves (38) is connected with the oil-out pipeline of No. 4 oil return hydraulic control one-way valves (40); No. 1 oil return hydraulic control one-way valve (34), No. 2 oil return hydraulic control one-way valves (36), No. 3 oil return hydraulic control one-way valves (38) are connected with the fuel tank pipeline with the oil-in of No. 4 oil return hydraulic control one-way valves (40); The control port of No. 1 oil return hydraulic control one-way valve (34) is connected with the working hole A pipeline of No. 1 oil return solenoid directional control valve (33); The control port of No. 2 oil return hydraulic control one-way valves (36) is connected with the working hole A pipeline of No. 2 oil return solenoid directional control valves (35); The control port of No. 3 oil return hydraulic control one-way valves (38) is connected with the working hole A pipeline of No. 3 oil return solenoid directional control valves (37); The control port of No. 4 oil return hydraulic control one-way valves (40) is connected with the working hole A pipeline of No. 4 oil return solenoid directional control valves (39); No. 1 oil return solenoid directional control valve (33), No. 2 oil return solenoid directional control valves (35), No. 3 oil return solenoid directional control valves (37) are connected with the pressure hydraulic fluid port P of No. 4 oil return solenoid directional control valves (39) and the oil inlet and outlet pipeline of No. 2 accumulators (31), and No. 1 oil return solenoid directional control valve (33), No. 2 oil return solenoid directional control valves (35), No. 3 oil return solenoid directional control valves (37) are connected with the fuel tank pipeline with the oil return opening O of No. 4 oil return solenoid directional control valves (39);
Described platform framework (1) bottom surface is evenly equipped with 6 supplemental support points; 2 supplemental support point places in the middle of platform framework (1) bottom surface vertically are provided with 2 buffering supporting legs (6) that structure is identical; The upper end of the buffering supporting leg (6) that 2 structures are identical is fixedly connected with the longeron (10) on platform framework (1) bottom surface; The lower end of buffering supporting leg (6) is fixedly connected with ground through bolt; 4 supplemental support points of periphery vertically are provided with identical auxiliary supporting leg (7) of 4 structures and No. 1 oil cylinder (2), No. 2 oil cylinders (3), No. 3 oil cylinders (4) and No. 4 oil cylinders (5) arranged side by side with auxiliary supporting leg (7); The upper end of the auxiliary supporting leg (7) that 4 structures are identical is fixedly connected with the longeron (10) on platform framework (1) bottom surface; The lower end of the auxiliary supporting leg (7) that 4 structures are identical is connected with ground through bolt; No. 1 oil cylinder (2), No. 2 oil cylinders (3), No. 3 oil cylinders (4) and the upper end of No. 4 oil cylinders (5) are connected with longeron (10) on platform framework (1) bottom surface, and No. 1 oil cylinder (2), No. 2 oil cylinders (3), No. 3 oil cylinders (4) are fixedly connected with ground through bolt with the lower end of No. 4 oil cylinders (5).
2. according to the large-scale spectators' vivid platform of the described accumulation of energy back pressure type of claim 1 special efficacy film, it is characterized in that described buffering supporting leg (6) comprises that No. 3 clamping plate (19), No. 3 studs (20), supporting leg and mechanical damping mechanism form;
Described supporting leg is made up of No. 2 upper flange plates, No. 2 lower flanges and No. 2 middle supporting legs; The plate structure spare that No. 2 upper flange plates and No. 2 lower flanges are rectangle; The periphery of No. 2 upper flange plates and No. 2 lower flanges is evenly equipped with bolt hole; Supporting leg is that the steel pipe section bar of rectangle is processed by cross section in the middle of No. 2; No. 2 upper flange plates and No. 2 lower flanges of rectangle adopt the mode of welding to be fixed on the upper and lower end face of supporting leg in the middle of No. 2, the axis of symmetry conllinear of No. 2 upper flange plates, No. 2 lower flanges and No. 2 middle supporting legs, and the upper and lower end face of supporting leg is parallel;
Described mechanical damping mechanism comprises base (21), No. 2 yoke caps (23), No. 2 sleeves (24), No. 2 dished spring assemblies (22); Be evenly equipped with the through hole that adopts screw to be connected on the base (21) with No. 2 built-in fittings (25) of ground; No. 2 sleeves (24) are sleeved on base (21) and go up and be fixedly connected through screw; No. 2 dished spring assemblies (22) are sleeved on the projecting shaft on the base (21) that is in No. 2 sleeves (24); No. 2 yoke caps (23) insert between the axle and No. 2 sleeves (24) that stretches out on the base (21); Between the projecting shaft on No. 2 yoke caps (23) and the base (21) is matched in clearance; For closing in the gap, mechanical damping mechanism is fixedly connected with No. 2 lower flanges of bolt and supporting leg by means of No. 2 yoke caps (23) between No. 2 yoke caps (23) and No. 2 sleeves (24), and No. 2 upper flange plates of supporting leg are fixedly connected with the longeron (10) of No. 3 studs (20) with platform framework (1) bottom surface through No. 3 clamping plate (19).
3. according to the large-scale spectators' vivid platform of the described accumulation of energy back pressure type of claim 1 special efficacy film, it is characterized in that described auxiliary supporting leg (7) comprises No. 1 clamping plate (8), No. 1 stud (9), upper flange plate, lower flange and middle supporting leg composition;
Described upper flange plate and lower flange are the plate structure spare of rectangle, and the periphery of upper flange plate and lower flange is evenly equipped with bolt hole;
Supporting leg is that the steel pipe section bar of rectangle is processed by cross section in the middle of described; The upper flange plate of rectangle and lower flange adopt the mode of welding to be fixed on the upper and lower end face of middle supporting leg; The axis of symmetry conllinear of upper flange plate, lower flange and middle supporting leg, the upper surface of upper flange plate is parallel with the lower surface of lower flange;
The upper flange plate of supporting leg is fixed on the longeron (10) of platform framework (1) bottom surface in the middle of being fixed on through No. 1 stud (9) and No. 1 clamping plate (8); The lower flange of supporting leg is connected on No. 1 built-in fitting (12) on the ground with caging bolt (11) in the middle of being fixed on, and the nut of caging bolt (11) upper end and the lower flange of auxiliary supporting leg (7) do not contact.
4. according to the large-scale spectators' vivid platform of the described accumulation of energy back pressure type of claim 1 special efficacy film; It is characterized in that; Described No. 1 oil cylinder (2), No. 2 oil cylinders (3), No. 3 oil cylinders (4) are the identical non-standard oil cylinder of structure with No. 4 oil cylinders (5); The upper end of No. 1 oil cylinder (2), No. 2 oil cylinders (3), No. 3 oil cylinders (4) or No. 4 oil cylinders (5) all is equipped with the identical mechanical damping mechanism of structure, and described mechanical damping mechanism comprises No. 1 dished spring assembly (15), dish spring abutment (16), No. 1 sleeve (18) and No. 1 yoke cap (17);
Dish spring abutment (16) is sleeved on the piston rod with No. 1 dished spring assembly (15) successively; The bottom surface of dish spring abutment (16) is connected with the contact of the upper surface of cylinder body; The lower surface of No. 1 dished spring assembly (15) is connected with the upper surface contact of dish spring abutment (16); No. 1 sleeve (18) is sleeved on the dish spring abutment (16); And adopt screw to be fixedly connected; No. 1 yoke cap (17) inserts between No. 1 sleeve (18) and the piston rod, is matched in clearance between No. 1 yoke cap (17) and the piston rod, is matched in clearance between No. 1 yoke cap (17) and No. 1 sleeve (18); The upper end of No. 1 oil cylinder (2), No. 2 oil cylinders (3), No. 3 oil cylinders (4) or No. 4 oil cylinders (5) is connected with the longeron (10) of No. 2 studs (14) with platform framework (1) bottom surface through No. 1 yoke cap (17), No. 2 clamping plate (13), and the lower end of No. 1 oil cylinder (2), No. 2 oil cylinders (3), No. 3 oil cylinders (4) or No. 4 oil cylinders (5) is fixedly connected through No. 1 built-in fitting (12) of bolt and ground.
5. according to the large-scale spectators' vivid platform of the described accumulation of energy back pressure type of claim 1 special efficacy film; It is characterized in that; Described platform framework (1) is the tower structure spare of right angled triangle for adopting the steel pipe section bar cross section that is welded; The undermost longeron of platform framework (1) (10) is selected I-steel for use, all the other crossbeams, Tong Liang, column, tiltedly hold, horizontal holding select the rectangular steel pipe section bar for use, the ladder that rises is gradually made on the inclined-plane that platform framework (1) makes progress from the bottom to top; The upper surface of every layer of ladder is laid checkered plates; And then the seat is set, and decorative steel plate is laid in the back of the front of every layer of ladder and platform framework (1), and the periphery of platform framework (1) and the place ahead of every layer of ladder are provided with handrail.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930002A (en) * | 2015-06-12 | 2015-09-23 | 中国建筑股份有限公司 | Hydraulic synchronous motor hydraulic console |
| CN109114075A (en) * | 2018-09-26 | 2019-01-01 | 河南科技大学 | A kind of stereo garage electro-hydraulic proportional control system |
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