CN103771235B - Dual Drive elevating mechanism - Google Patents
Dual Drive elevating mechanism Download PDFInfo
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- CN103771235B CN103771235B CN201410043469.3A CN201410043469A CN103771235B CN 103771235 B CN103771235 B CN 103771235B CN 201410043469 A CN201410043469 A CN 201410043469A CN 103771235 B CN103771235 B CN 103771235B
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Abstract
The invention discloses a kind of Dual Drive elevating mechanism, it includes machine power simultaneously and drives elevating mechanism and hydraulic power to drive elevating mechanism two to overlap power drive elevating mechanism, and its two sets power drive elevating mechanism can work alone respectively, it is also possible to work simultaneously.A kind of Dual Drive elevating mechanism that the present invention provides, any of which a set of driving elevating mechanism breaks down, and other set drives elevating mechanism can enter main driving condition at once, it is achieved the continuous work of elevating mechanism.Meanwhile, in Dual Drive elevating mechanism, any a set of driving elevating mechanism is main driving when being operated, and other set drives elevating mechanism will to protect elevating mechanism automatically as safety guard, improves reliability and the security of elevating mechanism work.
Description
Technical field
The present invention relates to a kind of Dual Drive elevating mechanism, be specifically related to a kind of mechanical-hydraulic Dual Drive elevating mechanism, belong to electric and field of electromechanical technology.
Background technology
At present, elevating mechanism be widely used in lifting, load, the field such as transport, common elevating mechanism has driving, elevator etc..Mainly it is made up of lifting motor, reductor, cable wire, reel etc..Its basic functional principle is: by controlling the direction of rotation of lifting motor, drives the positive and negative rotation of reel, it is achieved the reel folding and unfolding to cable wire, completes the lifting promoting thing.But for certain some important occasion, such as the lifting of visual plant, need more consideration safety and reliability, so, once elevating mechanism breaks down, and on the one hand must have more safety precautions, prevents from promoting quickly falling of thing, damages and promote thing；On the other hand allow for fixing a breakdown rapidly, or the second set elevating mechanism can be started, it is ensured that elevating mechanism can normal and continuous operation.
For certain some more special occasion, for ensureing that elevating mechanism can normal and continuous operation, and improving reliability and the security of elevating mechanism work, it is within the contemplation of the invention that provide the technical scheme of a set of double dynamical driving elevating mechanism, the reliably working for elevating mechanism provides safeguard.
Summary of the invention
In order to improve reliability and the security of elevating mechanism work, the present invention provides a kind of Dual Drive elevating mechanism, and it includes machine power simultaneously and drives elevating mechanism and hydraulic power to drive elevating mechanism two to overlap power drive elevating mechanism.
In order to reach object above, technical scheme is as follows:
A kind of Dual Drive elevating mechanism, including: fixed frame and elevator platform, and include machine power jacking system and hydraulic power jacking system；
Described machine power jacking system includes lifting motor, reductor, gear, tooth bar；Described lifting motor is with brake apparatus；Described lifting motor is arranged on motor mount, and described motor mount is fixed on elevator platform；The left end of described lifting motor is provided with reductor, and the output shaft of described reductor is connected with gear, and the rotary motion of described lifting motor can pass to gear by reductor after being slowed down, and drives gear to rotate；Described tooth bar is arranged on the fixed frame left column of fixed frame, and engages each other with gear；Slow down by the rotary motion of lifting motor being arranged on elevator platform and by reductor, drive gear to rotate, it is achieved gear up and down motion in tooth bar vertical direction, it is achieved the lifting action of elevator platform；
Described hydraulic power jacking system includes under hydraulic system, oil cylinder, cylinder upper end lid, oil cylinder lower union joint, oil cylinder mounting seat, upper pin on mounting seat, lower bearing pin, described oil cylinder；On described oil cylinder, mounting seat is arranged on the fixed frame crossbeam of fixed frame, and described cylinder upper end lid is formed hinged by upper pin with mounting seat on oil cylinder；Under described oil cylinder, mounting seat is arranged on elevator platform, and described oil cylinder lower union joint top is connected with cylinder piston rod by screw thread, and described oil cylinder lower union joint bottom is formed hinged by lower bearing pin with mounting seat under oil cylinder；Described hydraulic system includes fuel tank, oil filter, oil pump, balancing overflow valve, overflow valve, solenoid directional control valve, the second check valve and some pipelines, and described pipeline is pipeline one, pipeline two, pipeline three, pipeline four, pipeline five, pipeline six, pipeline seven, pipeline eight；It is connected by pipeline two between described fuel tank and oil filter, is connected by pipeline three between described oil filter and oil pump, be connected by pipeline four between described oil pump and solenoid directional control valve, connected by pipeline five between described solenoid directional control valve and the second check valve；nullDescribed oil cylinder includes cylinder tube、Upper end cover、Piston、Piston rod、Bottom end cover，Piston and piston rod are connected with each other，There is in described oil cylinder cylinder upper cavity oil and oil cylinder cavity of resorption，Oil through one is offered on described upper end cover、Hydraulic fluid port on oil through two and oil cylinder，Described cylinder upper cavity oil is by the oil through one on upper end cover、Oil through two、On oil cylinder, hydraulic fluid port is connected with the pipeline six of hydraulic system，Oil through three is offered on described bottom end cover、Hydraulic fluid port under oil through four and oil cylinder，The upper end of described oil through three is provided with plug，Plug mesopore is offered on described plug，The inside of described oil through three is provided with check valve and accommodates chamber，Described check valve is provided with the first check valve in accommodating chamber，First check valve can move up and down within it accommodates chamber，Described first check valve accommodates the inwall in chamber and forms spool annular chamber with it，The inside of described first check valve offers spool mesopore，Some spool side openings are offered on the sidewall of described first check valve，The lower end of described first check valve has the spool conical surface，Between plug and the first check valve, spring is installed，The spool conical surface of described spring handle the first check valve lower end is pressed on valve seat，The lower end of described first check valve is further opened with damping hole，Fluid in described oil cylinder cavity of resorption can pass through plug mesopore when discharging、Spool mesopore、Damping hole、Oil through three、Oil through four、Under oil cylinder, hydraulic fluid port is connected with the pipeline eight of hydraulic system；Pipeline one is set between described balancing overflow valve and pipeline eight, between described second check valve and pipeline eight, pipeline seven is set.The pressure oil of described hydraulic system can be by hydraulic fluid port, oil through four, oil through three under pipeline eight, oil cylinder, arrive the first check valve lower end, overcome the active force of spring, the spool conical surface is pushed away valve seat, and pressure oil is entered in oil cylinder cavity of resorption by spool annular chamber, spool side opening, spool mesopore, plug mesopore again；Described hydraulic system provides high-voltage oil liquid to oil cylinder, respectively enter cylinder upper cavity oil and the oil cylinder cavity of resorption of oil cylinder, piston driving piston rod can be driven, and moved up and down by mounting seat under piston rod, oil cylinder lower union joint, lower bearing pin, oil cylinder and elevator platform, it is achieved the lifting action of elevator platform.
The brake apparatus of above-mentioned lifting motor can realize braking by dead electricity to lifting motor, by electric realize releasing braking to lifting motor, the brake apparatus of lifting motor has two kinds of mode of operations: independent working mode and co-ordination pattern；
Independent working mode: in lifting motor no power state, the brake apparatus of lifting motor can realize working independently, and i.e. passes through dead electricity and lifting motor is realized braking, electric to lifting motor realization releasing braking by obtaining；
Co-ordination pattern: the brake apparatus of lifting motor and lifting motor is energized simultaneously, brake apparatus releases braking, and lifting motor rotates；The brake apparatus of lifting motor and lifting motor dead electricity simultaneously, lifting motor stall, brake apparatus realizes braking to lifting motor.
Between above-mentioned fixed frame and elevator platform, guider is set.
Above-mentioned lifting motor is common electric machine or servomotor.
Balancing overflow valve and the second check valve in above-mentioned hydraulic system play balanced action, can be with the gravity of balance lifting frame.
The Median Function of the solenoid directional control valve in above-mentioned hydraulic system is " H " type.
Provide the benefit that: a kind of Dual Drive elevating mechanism that the present invention provides, it includes machine power simultaneously and drives elevating mechanism and hydraulic power to drive elevating mechanism two to overlap power drive elevating mechanism, its two sets power drive elevating mechanism can work alone respectively, it is also possible to work simultaneously.
A kind of Dual Drive elevating mechanism that the present invention provides, any of which a set of driving elevating mechanism breaks down, and other set drives elevating mechanism can enter main driving condition at once, it is achieved the continuous work of elevating mechanism.Meanwhile, in Dual Drive elevating mechanism, any a set of driving elevating mechanism is main driving when being operated, and other set drives elevating mechanism will to protect elevating mechanism automatically as safety guard, improves reliability and the security of elevating mechanism work.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is further described.
As it is shown in figure 1, a kind of Dual Drive elevating mechanism, including: fixed frame 1 and elevator platform 2, and include machine power jacking system and hydraulic power jacking system；
Machine power jacking system includes lifting motor 3, reductor 5, gear 6, tooth bar 7；Lifting motor 3 is with brake apparatus (accompanying drawing unreacted is out), the brake apparatus of lifting motor 3 can realize braking by dead electricity to lifting motor 3, by electric realize releasing braking to lifting motor 3, the brake apparatus of lifting motor 3 has two kinds of mode of operations: independent working mode and co-ordination pattern.Independent working mode: in lifting motor 3 no power state, the brake apparatus of lifting motor 3 can realize working independently, and i.e. passes through dead electricity and lifting motor 3 is realized braking, electric to lifting motor 3 realization releasing braking by obtaining.Co-ordination pattern: the brake apparatus of lifting motor 3 and lifting motor 3 is energized simultaneously, brake apparatus releases braking, and lifting motor 3 rotates；The brake apparatus of lifting motor 3 and lifting motor 3 dead electricity simultaneously, lifting motor 3 stall, brake apparatus realizes braking to lifting motor 3.
Lifting motor 3 is arranged on motor mount 4, and motor mount 4 is fixed on elevator platform 2.The left end of lifting motor 3 is provided with reductor 5, and the output shaft of reductor 5 is connected with gear 6, and the rotary motion of lifting motor 3 can pass to gear 6 after being slowed down by reductor 5, drives gear 6 to rotate.Tooth bar 7 is arranged on the fixed frame left column 8 of fixed frame 1, and engages each other with gear 6.Slow down by the rotary motion of lifting motor 3 being arranged on elevator platform 2 and by reductor 5, drive gear 6 to rotate, it is achieved the gear 6 up and down motion in tooth bar 7 vertical direction, it is achieved the lifting action of elevator platform 2.
Hydraulic power jacking system includes under hydraulic system, oil cylinder, oil cylinder lower union joint 16, oil cylinder mounting seat 10, upper pin 11 on mounting seat 17, lower bearing pin 18, oil cylinder.On oil cylinder, mounting seat 10 is arranged on the fixed frame crossbeam 9 of fixed frame 1, and cylinder upper end lid 12 is formed hinged by upper pin 11 with mounting seat on oil cylinder 10.Under oil cylinder, mounting seat 17 is arranged on elevator platform 2, and oil cylinder lower union joint 16 top is connected with cylinder piston rod 14 by screw thread, and oil cylinder lower union joint 16 bottom is formed hinged by lower bearing pin 18 with mounting seat under oil cylinder 17.Hydraulic system includes fuel tank 29, oil filter 33, oil pump 34, balancing overflow valve 30 and overflow valve 32, solenoid directional control valve the 35, second check valve 36 and some pipelines.Pipeline is pipeline 1, pipeline 2 37, pipeline 3 38, pipeline 4 39, pipeline 5 40, pipeline 6 41, pipeline 7 42, pipeline 8 43, it is connected by pipeline 2 37 between fuel tank 29 with oil filter 33, it is connected by pipeline 3 38 between oil filter 33 with oil pump 34, it is connected by pipeline 4 39 between oil pump 34 with solenoid directional control valve 35, is connected by pipeline 5 40 between solenoid directional control valve 35 with the second check valve 36.nullOil cylinder includes cylinder tube、Upper end cover 12、Piston 13、Piston rod 14、Bottom end cover 15，Piston 13 and piston rod 14 are connected with each other，There is in oil cylinder cylinder upper cavity oil 27 and oil cylinder cavity of resorption 28，Oil through 1 is offered on upper end cover 12、Hydraulic fluid port 26 on oil through 2 25 and oil cylinder，Cylinder upper cavity oil 27 is by the oil through 1 on upper end cover 12、Oil through 2 25、On oil cylinder, hydraulic fluid port 26 is connected with the pipeline 6 41 of hydraulic system，Oil through 3 21 is offered on bottom end cover 15、Hydraulic fluid port 23 under oil through 4 22 and oil cylinder，The upper end of oil through 3 21 is provided with plug 19，Plug mesopore 19-1 is offered on plug 19，The inside of oil through 3 21 is provided with check valve and accommodates chamber，Check valve is provided with the first check valve 20 in accommodating chamber，First check valve 20 can move up and down within it accommodates chamber，First check valve 20 accommodates the inwall in chamber and forms spool annular chamber 20-2 with it，The inside of the first check valve 20 offers spool mesopore 20-1，Some spool side opening 20-3 are offered on the sidewall of the first check valve 20，The lower end of the first check valve 20 has spool conical surface 20-4，Between plug 19 and the first check valve 20, spring 19-2 is installed，Spring 19-2 is pressed in the spool conical surface 20-4 of the first check valve 20 lower end on valve seat 20-5，The lower end of the first check valve 20 is further opened with damping hole 20-6，Fluid in oil cylinder cavity of resorption 28 can pass through plug mesopore 19-1 when discharging、Spool mesopore 20-1、Damping hole 20-6、Oil through 3 21、Oil through 4 22、Under oil cylinder, hydraulic fluid port 23 is connected with the pipeline 8 43 of hydraulic system；Pipeline 1 is set between balancing overflow valve and pipeline eight, between the second check valve 36 and pipeline 8 43, pipeline 7 42 is set.The pressure oil of hydraulic system can be by hydraulic fluid port 23, oil through 4 22, oil through 3 21 under pipeline 8 43, oil cylinder, arrive the first check valve 20 lower end, overcome the active force of spring 19-2, spool conical surface 20-4 is pushed away valve seat 20-5, and pressure oil is entered in oil cylinder cavity of resorption 28 by spool annular chamber 20-2, spool side opening 20-3, spool mesopore 20-1, plug mesopore 19-1 again.Hydraulic system provides high-voltage oil liquid to oil cylinder, respectively enter cylinder upper cavity oil 27 and the oil cylinder cavity of resorption 28 of oil cylinder, piston 13 can be driven to drive piston rod 14, and moved up and down by mounting seat 17 under piston rod 14, oil cylinder lower union joint 16, lower bearing pin 18, oil cylinder and elevator platform 2, it is achieved the lifting action of elevator platform 2.
Guider can be set between fixed frame 1 and elevator platform 2；Lifting motor 3 can be common electric machine, it is also possible to be servomotor；Balancing overflow valve 30 and the second check valve 36 in hydraulic system play balanced action, can be with the gravity of balance lifting frame.The Median Function of the solenoid directional control valve 35 in hydraulic system is " H " type.
A kind of Dual Drive elevating mechanism that the present invention provides, the machine power that it comprises drives elevating mechanism and hydraulic power to drive elevating mechanism can work alone respectively, it is also possible to work simultaneously.
The principle that works alone of machine power driving elevating mechanism:
(1), by drive installation lifting motor 3 on elevator platform 2 produce rotary motion, and slow down by reductor 5, drive gear 6 to rotate, it is achieved the gear 6 up and down motion in tooth bar 7 vertical direction, it is achieved the lifting action of elevator platform 2.By changing the rotary motion direction of lifting motor 3, lifting and the down maneuver of elevator platform 2 can be realized respectively.When lifting motor 3 works, the brake apparatus of lifting motor 3 is in "on" position, releases and brakes lifting motor 3.
(2), lifting motor 3 is when quitting work, and the brake apparatus of lifting motor 3 is in off-position, it is achieved the braking to lifting motor 3.
The principle that works alone of hydraulic power driving elevating mechanism:
null(1)、Hydraulic power drives the lifting state of elevating mechanism: solenoid directional control valve 35 is in right position duty，The oil-in of oil pump 34 passes through oil filter 33 oil suction from fuel tank 29，The hydraulic oil of oil pump 34 oil-out passes through pipeline 4 39、The right position of solenoid directional control valve 35、Pipeline 5 40、Second check valve 36、Pipeline 7 42、Pipeline 8 43、Hydraulic fluid port 23 under oil cylinder、Oil through 4 22、Oil through 3 21，Arrive the first check valve 20 lower end，Overcome the active force of spring 19-2，Spool conical surface 20-4 is pushed away valve seat 20-5，Pressure oil is again by spool annular chamber 20-2、Spool side opening 20-3、Spool mesopore 20-1、Plug mesopore 19-1 enters oil cylinder cavity of resorption 28，Oil pressure acts on piston 13，Form lifting force，By piston rod 14、Oil cylinder lower union joint 16、Lower bearing pin 18、Mounting seat 17 under oil cylinder，Overcome the gravity of elevator platform 2，Realize the enhancing action to elevator platform 2，The hydraulic oil of cylinder upper cavity oil 27 passes through oil through 1、Oil through 2 25、Hydraulic fluid port 26 on oil cylinder、Pipeline 6 41、The right position of solenoid directional control valve 35 returns to fuel tank 29.
null(2)、Hydraulic power drives the decline state of elevating mechanism: solenoid directional control valve 35 is in left position duty，The oil-in of oil pump 34 passes through oil filter 33 oil suction from fuel tank 29，The hydraulic oil of oil pump 34 oil-out passes through pipeline 4 39、The left position of solenoid directional control valve 35、Pipeline 6 41、Hydraulic fluid port 26 on oil cylinder、Oil through 2 25、Oil through 1 enters cylinder upper cavity oil 27，Oil pressure acts on piston 13，Produce downward thrust，And by piston rod 14、Oil cylinder lower union joint 16、Lower bearing pin 18、Mounting seat 17 under oil cylinder，Together with the gravity of elevator platform 2，Overcome the reaction force that oil cylinder cavity of resorption 28 oil pressure produces，Realize the down maneuver to elevator platform 2，The hydraulic oil of oil cylinder cavity of resorption 28 passes through plug mesopore 19-1、Spool mesopore 20-1、Damping hole 20-6、Oil through 3 21、Oil through 4 22、Hydraulic fluid port 23 under oil cylinder、Pipeline 8 43、Pipeline 1、Balancing overflow valve 30 returns to fuel tank 29.
(3), hydraulic power drives the halted state of elevating mechanism: solenoid directional control valve 35 is in middle position duty, if oil pump 34 does not quits work, the oil-in of oil pump 34 passes through oil filter 33 oil suction from fuel tank 29, the fluid of oil pump 34 oil-out passes through pipeline 4 39, in solenoid directional control valve 35, position returns to fuel tank 29, the gravity of elevator platform is by mounting seat 17 under oil cylinder, lower bearing pin 18, oil cylinder lower union joint 16, piston rod 14 acts on piston 13, the fluid of oil cylinder cavity of resorption 28 is at balancing overflow valve 30, under the common effect of the second check valve 36, it is sealed, cannot flow, oil cylinder cavity of resorption 28 forms corresponding oil pressure, the gravity of balance lifting frame 2, elevator platform 2 is made to be in halted state.
When driving elevating mechanism to be main driving with machine power, the operation principle of hydraulic power driving elevating mechanism:
Oil pump 34 is in the state of quitting work, and solenoid directional control valve 35 is in middle position duty.
(1), the lifting state of elevating mechanism 2: the brake apparatus of lifting motor 3 is in "on" position, release and lifting motor 3 is braked, lifting motor 3 rotates forward, gear 6 is driven to rotate forward by reductor 5, gear 6 engages each other with tooth bar 7, overcome the gravity of elevator platform 2, it is achieved the enhancing action of elevator platform 2.nullWhile elevator platform 2 promotes，By mounting seat 17 under oil cylinder、Lower bearing pin 18、Oil cylinder lower union joint 16、Piston rod 14 drives piston 13 to move upward，Now，Oil cylinder cavity of resorption 28 is by plug mesopore 19-1、Spool mesopore 20-1、Spool side opening 20-3、Spool annular chamber 20-2，First check valve 20 upper end forms negative pressure，Overcome the active force of spring 19-2，Spool conical surface 20-4 is pushed away valve seat 20-5，Again through oil through 3 21、Oil through 4 22、Hydraulic fluid port 23 under oil cylinder、Pipeline 8 43、Pipeline 7 42、Second check valve 36、Pipeline 5 40、In solenoid directional control valve 35, fluid is drawn from fuel tank 29 in position，The hydraulic oil of cylinder upper cavity oil 27 passes through oil through 1、Oil through 2 25、Hydraulic fluid port 26 on oil cylinder、Pipeline 6 41、In solenoid directional control valve 35, position returns to fuel tank 29，Oil cylinder is in servo-actuated state.
(2), the decline state of elevating mechanism 2: the brake apparatus of lifting motor 3 is in "on" position, releasing and brake lifting motor 3, lifting motor 3 rotates backward, and drives gear 6 to rotate backward by reductor 5, gear 6 engages each other with tooth bar 7, it is achieved the down maneuver of elevator platform 2.While elevator platform 2 declines, driving piston 13 to move downward by mounting seat under oil cylinder 17, lower bearing pin 18, oil cylinder lower union joint 16, piston rod 14, the hydraulic oil of oil cylinder cavity of resorption 28 returns to fuel tank 29 by hydraulic fluid port 23, pipeline 8 43, pipeline 1, balancing overflow valve 30, pipeline under plug mesopore 19-1, spool mesopore 20-1, damping hole 20-6, oil through 3 21, oil through 4 22, oil cylinder；Cylinder upper cavity oil 27 draws fluid by position in hydraulic fluid port 26, pipeline 6 41, solenoid directional control valve 35 on oil through 1, oil through 2 25, oil cylinder from fuel tank 29, and oil cylinder is in servo-actuated state.
(3), the halted state of elevating mechanism 2: lifting motor 3 is in power down mode, and the brake apparatus of lifting motor 3 is in power down mode, brakes lifting motor 3, gear 6 stall, elevator platform 2 stop motion.Once, the brake apparatus of lifting motor 3 breaks down, it is impossible to realize braking lifting motor 3, and hydraulic power drives elevating mechanism to play a protective role.Owing to the brake apparatus of lifting motor 3 breaks down, cannot realize lifting motor 3 is braked, the gravity of elevator platform 2 acts on piston 13 by mounting seat 17, lower bearing pin 18, oil cylinder lower union joint 16, piston rod 14 under oil cylinder, the fluid of oil cylinder cavity of resorption 28 is under the common effect of balancing overflow valve the 30, second check valve 36, being sealed, it is impossible to flowing, oil cylinder cavity of resorption 28 forms corresponding oil pressure, the gravity of balance lifting frame 2, makes elevator platform 2 be in halted state.If balancing overflow valve 30 or the second check valve 36 also break down, then elevator platform 2 moves down under gravity, the fluid of oil cylinder cavity of resorption 28 is flowed out by the damping hole 20-6 of the first check valve 20 lower end, the fluid that can flow out oil cylinder cavity of resorption 28 due to damping hole 20-6 produces damping action, the rate of outflow of limit for tonnage oil cylinder cavity of resorption 28 fluid, be equivalent to limit piston 13 and the decrease speed of piston rod 14, even if i.e. ensureing that elevator platform 2 is nonserviceabled, also move down only in the lowest speed, until elevator platform 2 contacts ground, or stroke covered by oil cylinder, till piston 13 is adjacent to oil cylinder bottom end cover 15, elevator platform 2 rapid decrease is avoided to form impact, produce loss.
When driving elevating mechanism to be main driving with hydraulic power, the state of machine power driving elevating mechanism:
(1), hydraulic power drive elevating mechanism elevator platform 2 to be promoted and during down maneuver, lifting motor 3 is in power down mode, and the brake apparatus of lifting motor 3 is in "on" position, releases the braking to lifting motor 3, and lifting motor 3 is in servo-actuated state.
(2), hydraulic power drive elevating mechanism when quitting work, lifting motor 3 is in power down mode, and the brake apparatus of lifting motor 3 is in power down mode, and the realization to lifting motor 3 is braked, and plays a protective role elevator platform 2.
Provide the benefit that: a kind of Dual Drive elevating mechanism that the present invention provides, it includes machine power simultaneously and drives elevating mechanism and hydraulic power to drive elevating mechanism two to overlap power drive elevating mechanism, its two sets power drive elevating mechanism can work alone respectively, it is also possible to work simultaneously.
A kind of Dual Drive elevating mechanism that the present invention provides, any of which a set of driving elevating mechanism breaks down, and other set drives elevating mechanism can enter main driving condition at once, it is achieved the continuous work of elevating mechanism.Meanwhile, in Dual Drive elevating mechanism, any a set of driving elevating mechanism is main driving when being operated, and other set drives elevating mechanism will to protect elevating mechanism automatically as safety guard, improves reliability and the security of elevating mechanism work.
The above is only the preferred embodiment of the present invention; it is noted that, for those skilled in the art; under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (6)
1. a Dual Drive elevating mechanism, it is characterised in that including: fixed frame and elevator platform, and include machine power jacking system and hydraulic power jacking system；
Described machine power jacking system includes lifting motor, reductor, gear, tooth bar；Described lifting motor is with brake apparatus；Described lifting motor is arranged on motor mount, and described motor mount is fixed on elevator platform；The left end of described lifting motor is provided with reductor, and the output shaft of described reductor is connected with gear, and the rotary motion of described lifting motor passes to gear by reductor after being slowed down, and drives gear to rotate；Described tooth bar is arranged on the fixed frame left column of fixed frame, and engages each other with gear；Slow down by the rotary motion of lifting motor being arranged on elevator platform and by reductor, drive gear to rotate, it is achieved gear up and down motion in tooth bar vertical direction, it is achieved the lifting action of elevator platform；
Described hydraulic power jacking system includes under hydraulic system, oil cylinder, cylinder upper end lid, oil cylinder lower union joint, oil cylinder mounting seat, upper pin on mounting seat, lower bearing pin, described oil cylinder；On described oil cylinder, mounting seat is arranged on the fixed frame crossbeam of fixed frame, and described cylinder upper end lid is formed hinged by upper pin with mounting seat on oil cylinder；Under described oil cylinder, mounting seat is arranged on elevator platform, and described oil cylinder lower union joint top is connected with cylinder piston rod by screw thread, and described oil cylinder lower union joint bottom is formed hinged by lower bearing pin with mounting seat under oil cylinder；Described hydraulic system includes fuel tank, oil filter, oil pump, balancing overflow valve, overflow valve, solenoid directional control valve, the second check valve and some pipelines, described pipeline is pipeline one, pipeline two, pipeline three, pipeline four, pipeline five, pipeline six, pipeline seven, pipeline eight, it is connected by pipeline two between described fuel tank and oil filter, it is connected by pipeline three between described oil filter and oil pump, it is connected by pipeline four between described oil pump and solenoid directional control valve, is connected by pipeline five between described solenoid directional control valve and the second check valve；nullDescribed oil cylinder includes cylinder tube、Upper end cover、Piston、Piston rod、Bottom end cover，Piston and piston rod are connected with each other，There is in described oil cylinder cylinder upper cavity oil and oil cylinder cavity of resorption，Oil through one is offered on described upper end cover、Hydraulic fluid port on oil through two and oil cylinder，Described cylinder upper cavity oil is by the oil through one on upper end cover、Oil through two、On oil cylinder, hydraulic fluid port is connected with the pipeline six of hydraulic system，Oil through three is offered on described bottom end cover、Hydraulic fluid port under oil through four and oil cylinder，The upper end of described oil through three is provided with plug，Plug mesopore is offered on described plug，The inside of described oil through three is provided with check valve and accommodates chamber，Described check valve is provided with the first check valve in accommodating chamber，First check valve moves up and down within it accommodates chamber，Described check valve accommodates the inwall in chamber and forms spool annular chamber with it，The inside of described first check valve offers spool mesopore，Some spool side openings are offered on the sidewall of described first check valve，The lower end of described first check valve has the spool conical surface，Between plug and the first check valve, spring is installed，The spool conical surface of described spring handle the first check valve lower end is pressed on valve seat，The lower end of described first check valve is further opened with damping hole，By plug mesopore when fluid in described oil cylinder cavity of resorption is discharged、Spool mesopore、Damping hole、Oil through three、Oil through four、Under oil cylinder, hydraulic fluid port is connected with the pipeline eight of hydraulic system，Between described balancing overflow valve and pipeline eight, pipeline one is set，Between described second check valve and pipeline eight, pipeline seven is set；The pressure oil of described hydraulic system is by hydraulic fluid port, oil through four, oil through three under pipeline eight, oil cylinder, arrive the first check valve lower end, overcome the active force of spring, the spool conical surface is pushed away valve seat, and pressure oil is entered in oil cylinder cavity of resorption by spool annular chamber, spool side opening, spool mesopore, plug mesopore again；Described hydraulic system provides high-voltage oil liquid to oil cylinder, respectively enter cylinder upper cavity oil and the oil cylinder cavity of resorption of oil cylinder, drive piston driving piston rod, and moved up and down by mounting seat under piston rod, oil cylinder lower union joint, lower bearing pin, oil cylinder and elevator platform, it is achieved the lifting action of elevator platform.
Dual Drive elevating mechanism the most according to claim 1, it is characterized in that: the brake apparatus of described lifting motor realizes braking by dead electricity to lifting motor, by electric realize releasing braking to lifting motor, the brake apparatus of lifting motor has two kinds of mode of operations: independent working mode and co-ordination pattern；
Independent working mode: in lifting motor no power state, the brake apparatus realization of lifting motor works independently, and i.e. passes through dead electricity and lifting motor is realized braking, electric to lifting motor realization releasing braking by obtaining；
Co-ordination pattern: the brake apparatus of lifting motor and lifting motor is energized simultaneously, brake apparatus releases braking, and lifting motor rotates；The brake apparatus of lifting motor and lifting motor dead electricity simultaneously, lifting motor stall, brake apparatus realizes braking to lifting motor.
Dual Drive elevating mechanism the most according to claim 1, it is characterised in that: between described fixed frame and elevator platform, guider is set.
Dual Drive elevating mechanism the most according to claim 1, it is characterised in that: described lifting motor is common electric machine or servomotor.
Dual Drive elevating mechanism the most according to claim 1, it is characterised in that: balancing overflow valve and the second check valve in described hydraulic system play balanced action, the gravity of balance lifting frame.
Dual Drive elevating mechanism the most according to claim 1, it is characterised in that: the Median Function of the solenoid directional control valve in described hydraulic system is " H " type.
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| CN201410043469.3A CN103771235B (en) | 2014-01-29 | 2014-01-29 | Dual Drive elevating mechanism |
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| CN101402440A (en) * | 2008-07-25 | 2009-04-08 | 白天海 | Mobile hoistable platform and labor-saving apparatus |
| CN102951576A (en) * | 2012-05-23 | 2013-03-06 | 济南吉利汽车有限公司 | Dual-drive body-in-white lifting working platform |
| CN203767805U (en) * | 2014-01-29 | 2014-08-13 | 河海大学常州校区 | Double-drive lifting mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070056804A1 (en) * | 2003-10-01 | 2007-03-15 | Frank Thielow | Lifting device especially a lift or a lifting platform |
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2014
- 2014-01-29 CN CN201410043469.3A patent/CN103771235B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101402440A (en) * | 2008-07-25 | 2009-04-08 | 白天海 | Mobile hoistable platform and labor-saving apparatus |
| CN102951576A (en) * | 2012-05-23 | 2013-03-06 | 济南吉利汽车有限公司 | Dual-drive body-in-white lifting working platform |
| CN203767805U (en) * | 2014-01-29 | 2014-08-13 | 河海大学常州校区 | Double-drive lifting mechanism |
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| CN103771235A (en) | 2014-05-07 |
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