CN103787177B - A kind of Dual Drive lifting mechanism - Google Patents
A kind of Dual Drive lifting mechanism Download PDFInfo
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- CN103787177B CN103787177B CN201410043250.3A CN201410043250A CN103787177B CN 103787177 B CN103787177 B CN 103787177B CN 201410043250 A CN201410043250 A CN 201410043250A CN 103787177 B CN103787177 B CN 103787177B
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Abstract
The invention discloses a kind of Dual Drive lifting mechanism, it includes mechanical power simultaneously and drives lifting mechanism and hydraulic power to drive lifting mechanism two to overlap power driven lifting mechanism, its two covers power driven lifting mechanism can work alone respectively, also can work simultaneously.A kind of Dual Drive lifting mechanism provided by the invention, wherein any a set of driving lifting mechanism et out of order, a set of driving lifting mechanism can enter main driving condition at once in addition, realizes the continuous working of lifting mechanism.Simultaneously; in Dual Drive lifting mechanism, any a set of driving lifting mechanism is main driving when carrying out work, and a set of driving lifting mechanism will automatically as safety guard in addition; lifting mechanism is protected, improves reliability and the safety of lifting mechanism work.
Description
Technical field
The present invention relates to a kind of Dual Drive lifting mechanism, be specifically related to a kind of mechanical-hydraulic Dual Drive lifting mechanism, belong to electric and field of electromechanical technology.
Background technology
At present, lifting mechanism is widely used in the fields such as lifting, loading, transport, and common lifting mechanism has driving, elevator etc.Mainly contain the compositions such as lifting motor, reductor, cable wire, reel.Its basic functional principle is: by controlling the hand of rotation of lifting motor, driving the positive and negative rotation of reel, realizing the folding and unfolding of reel to cable wire, completing the lifting to promoting thing.But for certain some important occasion, as the lifting of visual plant, need more consideration safety and reliabilities, so, once lifting mechanism et out of order, more safety precautions must be had on the one hand, prevent from promoting falling fast of thing, damage and promote thing; On the other hand must trouble-shooting rapidly, or the second cover lifting mechanism can be started, guarantee lifting mechanism can normal and continuous operation.
For certain some more special occasion, for ensureing that lifting mechanism can normal and continuous operation, and improve reliability and the safety of lifting mechanism work, the present invention desirable to provide the technical scheme of a set of double dynamical driving lifting mechanism, for the reliable operation of lifting mechanism provides safeguard.
Summary of the invention
In order to improve reliability and the safety of lifting mechanism work, the invention provides a kind of Dual Drive lifting mechanism, it includes mechanical power simultaneously and drives lifting mechanism and hydraulic power to drive lifting mechanism two to overlap power driven lifting mechanism.
In order to reach above object, technical scheme of the present invention is as follows:
A kind of Dual Drive lifting mechanism, comprising: fixed frame and elevator platform, and comprises mechanical power jacking system and hydraulic power jacking system;
Described mechanical power jacking system comprises lifting motor, reductor, gear, tooth bar; Described lifting motor is with brake equipment; 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 is passed to gear drive gear and rotates after can being slowed down by reductor; Described tooth bar is arranged on the fixed frame left column of fixed frame, and engage each other with gear, by being arranged on the rotary motion of the lifting motor on elevator platform and being rotated by reductor deceleration, driven wheel, realize the up-and-down movement of gear in tooth bar vertical direction, realize the lifting action of elevator platform;
Described hydraulic power jacking system comprises hydraulic efficiency pressure system, HM Hydraulic Motor, gear, tooth bar, described HM Hydraulic Motor is arranged on HM Hydraulic Motor mount pad, and described HM Hydraulic Motor mount pad is fixed on elevator platform, the output shaft of described HM Hydraulic Motor is provided with gear, described tooth bar is arranged on fixed frame right column, and engages each other with gear, described hydraulic efficiency pressure system comprises fuel tank, oil filter, oil pump, balancing overflow valve, by pass valve, solenoid directional control valve, hydraulic control one-way valve and some pipelines, described pipeline is pipeline one, pipeline two, pipeline three, pipeline four, pipeline five, pipeline six, pipeline seven, pipeline eight, pipeline nine, pipeline two is set between described fuel tank and oil filter, pipeline three is set between described oil filter and oil pump, pipeline four is set between described oil pump and solenoid directional control valve, described fuel tank, by connecting by pass valve connecting pipeline four, arranges pipeline five between described solenoid directional control valve and hydraulic control one-way valve, described HM Hydraulic Motor to have in HM Hydraulic Motor hydraulic fluid port under hydraulic fluid port and HM Hydraulic Motor, described HM Hydraulic Motor is provided with plug in hydraulic fluid port, plug offers plug mesopore, oil through is also had on the right side of plug, the inside of described oil through is provided with check valve container cavity, in check valve container cavity, nonreturn valve core is installed, nonreturn valve core can in its container cavity sway, the inwall of nonreturn valve core and its container cavity forms annular chamber, the inside of described nonreturn valve core offers nonreturn valve core mesopore, the sidewall of nonreturn valve core offers some nonreturn valve core side openings, the left end of nonreturn valve core has the spool conical surface, between plug and nonreturn valve core, spring is installed, the spool conical surface of described spring handle nonreturn valve core left end is pressed on valve seat, the left end of nonreturn valve core also offers damping hole, fluid in HM Hydraulic Motor epicoele can pass through oil through when discharging, nonreturn valve core mesopore, damping hole, plug mesopore, in HM Hydraulic Motor, hydraulic fluid port is connected with the pipeline nine of hydraulic efficiency pressure system, described hydraulic efficiency pressure system can pass through hydraulic fluid port, plug mesopore in pipeline nine, HM Hydraulic Motor, arrive the left end of nonreturn valve core, overcome the application force of spring, nonreturn valve core is pushed away valve seat, fluid enters HM Hydraulic Motor epicoele through annular chamber, nonreturn valve core side opening, nonreturn valve core mesopore, oil through again, in described HM Hydraulic Motor, hydraulic fluid port is connected with the pipeline nine of hydraulic efficiency pressure system, and under HM Hydraulic Motor, hydraulic fluid port is connected with the pipeline six of hydraulic efficiency pressure system, pipeline seven is set between described hydraulic control one-way valve and pipeline six, pipeline eight is set between described hydraulic control one-way valve and pipeline nine, pipeline one is set between described by pass valve and pipeline nine, when hydraulic efficiency pressure system provides high pressure oil by hydraulic fluid port in pipeline nine and HM Hydraulic Motor to HM Hydraulic Motor epicoele, HM Hydraulic Motor can be driven to rotate forward, and rotated forward by output shaft driven gear, gear, by being meshed with the tooth bar be arranged on fixed frame right column, realizes the enhancing action of elevator platform, when hydraulic fluid port under hydraulic efficiency pressure system is by pipeline six and HM Hydraulic Motor provides high pressure oil to HM Hydraulic Motor cavity of resorption, HM Hydraulic Motor contrarotation can be driven, and by the contrarotation of output shaft driven gear, gear, by being meshed with the tooth bar be arranged on fixed frame right column, realizes the down maneuver of elevator platform.
The brake equipment of above-mentioned lifting motor can realize braking by dead electricity to lifting electricity, by electric brake off is realized to lifting motor, the brake equipment 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 equipment of lifting motor can realize working independently, and namely realizes braking by dead electricity to lifting motor, by electricly realizing brake off to lifting motor;
Co-ordination pattern: the brake equipment of lifting motor and lifting motor is energized simultaneously, brake equipment brake off, lifting motor rotates; The brake equipment dead electricity simultaneously of lifting motor and lifting motor, lifting motor stall, brake equipment realizes braking to lifting motor.
Between above-mentioned fixed frame and elevator platform, guide piece is set.
Above-mentioned lifting motor is common electric machine or servomotor.
Balancing overflow valve in above-mentioned hydraulic efficiency pressure system and hydraulic control one-way valve play equilibrium activity, can the gravity of balance lifting frame.
The Median Function of the solenoid directional control valve in above-mentioned hydraulic efficiency pressure system is " H " type.
Beneficial effect is: a kind of Dual Drive lifting mechanism provided by the invention, it includes mechanical power simultaneously and drives lifting mechanism and hydraulic power to drive lifting mechanism two to overlap power driven lifting mechanism, its two covers power driven lifting mechanism can work alone respectively, also can work simultaneously.
A kind of Dual Drive lifting mechanism provided by the invention, wherein any a set of driving lifting mechanism et out of order, a set of driving lifting mechanism can enter main driving condition at once in addition, realizes the continuous working of lifting mechanism.Simultaneously; in Dual Drive lifting mechanism, any a set of driving lifting mechanism is that main driving is when carrying out work; a set of driving lifting mechanism automatically as safety guard, will be protected lifting mechanism, improves reliability and the safety of lifting mechanism work in addition.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, a kind of Dual Drive lifting mechanism, comprising: fixed frame 1 and elevator platform 2, and comprises mechanical power jacking system and hydraulic power jacking system;
Mechanical power jacking system comprises lifting motor 3, reductor 5, gear 6, tooth bar 7; Lifting motor 3 is with brake equipment (accompanying drawing unreacted out), the brake equipment of lifting motor 3 can realize braking by dead electricity to lifting motor 3, by electricly realizing brake off to lifting motor 3, the brake equipment 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 equipment of lifting motor 3 can realize working independently, namely realizes braking by dead electricity to lifting motor 3, by electricly realizing brake off to lifting motor 3.Co-ordination pattern: the brake equipment of lifting motor 3 and lifting motor 3 is energized simultaneously, brake equipment brake off, lifting motor 3 rotates; The brake equipment dead electricity simultaneously of lifting motor 3 and lifting motor 3, lifting motor 3 stall, brake equipment 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 by passing to gear 6 after reductor 5 deceleration, and driven wheel 6 rotates.Tooth bar 7 is arranged on the fixed frame left column 8 of fixed frame 1, and engages each other with gear 6.By be arranged on the rotary motion of the lifting motor 3 on elevator platform 2 and slowed down by reductor 5, driven wheel 6 rotates, realize the up-and-down movement of gear 6 in tooth bar 7 vertical direction, realize the lifting action of elevator platform 2.
Hydraulic power jacking system comprises hydraulic efficiency pressure system, HM Hydraulic Motor 10, gear 12, tooth bar 14.HM Hydraulic Motor 10 is arranged on HM Hydraulic Motor mount pad 11, and HM Hydraulic Motor mount pad 11 is fixed on elevator platform 2.The output shaft of HM Hydraulic Motor 10 is provided with gear 12.Tooth bar 14 is arranged on fixed frame right column 13, and engages each other with gear 12.Hydraulic efficiency pressure system comprise fuel tank 17, oil filter 21, oil pump 22, balancing overflow valve 18 and by pass valve 20, solenoid directional control valve 23, hydraulic control one-way valve 24 and and some pipelines; Described pipeline is pipeline 1, pipeline 2 25, pipeline 3 26, pipeline 4 27, pipeline 5 28, pipeline 6 29, pipeline 7 30, pipeline 8 31, pipeline 9 32, pipeline 2 25 is set between fuel tank 17 and oil filter 21, pipeline 3 26 is set between oil filter 21 and oil pump 22, pipeline 4 27 is set between oil pump 22 and solenoid directional control valve 23, fuel tank 17, by connecting by pass valve 20 connecting pipeline 4 27, arranges pipeline 5 28 between solenoid directional control valve 23 and hydraulic control one-way valve 24.HM Hydraulic Motor 10 to have in HM Hydraulic Motor hydraulic fluid port 16 under hydraulic fluid port 15 and HM Hydraulic Motor.HM Hydraulic Motor is provided with plug 33 in hydraulic fluid port 15, plug 33 offers plug mesopore 36, oil through 35 is also had on the right side of plug 33, the inside of oil through 35 is provided with check valve container cavity, nonreturn valve core 37 is installed in check valve container cavity, nonreturn valve core 37 can in its container cavity sway, nonreturn valve core 37 forms annular chamber 38 with the inwall of its container cavity, the inside of nonreturn valve core 37 offers nonreturn valve core mesopore 40, the sidewall of nonreturn valve core 37 offers some nonreturn valve core side openings 39, the left end of nonreturn valve core 37 has the spool conical surface, spring 41 is installed between plug 33 and nonreturn valve core 37, spring 41 is pressed in the spool conical surface of nonreturn valve core 37 left end on valve seat, the left end of nonreturn valve core 37 also offers damping hole 34, fluid in HM Hydraulic Motor 10 epicoele can pass through oil through 35 when discharging, nonreturn valve core mesopore 40, damping hole 34, plug mesopore 36, in HM Hydraulic Motor, hydraulic fluid port 15 is connected with the pipeline 9 32 of hydraulic efficiency pressure system.Hydraulic efficiency pressure system can pass through hydraulic fluid port 15, plug mesopore 36 in pipeline 9 32, HM Hydraulic Motor, arrive the left end of nonreturn valve core 37, overcome the application force of spring 41, nonreturn valve core 37 is pushed away valve seat, and fluid enters HM Hydraulic Motor 10 epicoele through annular chamber 38, nonreturn valve core side opening 39, nonreturn valve core mesopore 40, oil through 35 again.In HM Hydraulic Motor, hydraulic fluid port 15 is connected with the pipeline 9 32 of hydraulic efficiency pressure system, and under HM Hydraulic Motor, hydraulic fluid port 16 is connected with the pipeline 6 29 of hydraulic efficiency pressure system; Pipeline 7 30 is set between hydraulic control one-way valve 24 and pipeline 6 29, pipeline 8 31 is set between hydraulic control one-way valve 24 and pipeline 9 32, pipeline 1 is set between by pass valve 20 and pipeline 9 32.When hydraulic efficiency pressure system provides high pressure oil by hydraulic fluid port 15 in pipeline 9 32 and HM Hydraulic Motor to HM Hydraulic Motor epicoele, HM Hydraulic Motor 10 can be driven to rotate forward, and rotated forward by output shaft driven gear 12, gear 12, by being meshed with the tooth bar 14 be arranged on fixed frame right column 13, realizes the enhancing action of elevator platform 2.When hydraulic fluid port 16 under hydraulic efficiency pressure system is by pipeline 6 29 and HM Hydraulic Motor provides high pressure oil to HM Hydraulic Motor cavity of resorption, HM Hydraulic Motor 10 contrarotation can be driven, and by output shaft driven gear 12 contrarotation, gear 12, by being meshed with the tooth bar 14 be arranged on fixed frame right column 13, realizes the down maneuver of elevator platform 2.
Between fixed frame 1 and elevator platform 2, can guide piece be set; Lifting motor 3 can be common electric machine, also can be servomotor; Balancing overflow valve 18 in hydraulic efficiency pressure system and hydraulic control one-way valve 24 play equilibrium activity, can the gravity of balance lifting frame.The Median Function of the solenoid directional control valve 23 in hydraulic efficiency pressure system is " H " type.
A kind of Dual Drive lifting mechanism provided by the invention, the mechanical power that it comprises drives lifting mechanism and hydraulic power to drive lifting mechanism can work alone respectively, also can work simultaneously.
Mechanical power drives the principle that works alone of lifting mechanism:
(1), by the lifting motor 3 of drive installation on elevator platform 2 produce rotary motion, and slowed down by reductor 5, driven wheel 6 rotates, realize the up-and-down movement of gear 6 in tooth bar 7 vertical direction, realize 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 equipment of lifting motor 3 is in "on" position, removes and brakes lifting motor 3.
(2), lifting motor 3 is when quitting work, and the brake equipment of lifting motor 3 is in off-position, realizes the braking to lifting motor 3.
Hydraulic power drives the principle that works alone of lifting mechanism:
(1), hydraulic power drives the lifting state of lifting mechanism: solenoid directional control valve 23 is in right position mode of operation, the oil inlet of oil pump 22 is by oil filter 21 oil suction from fuel tank 17, the high pressure oil of oil pump 22 oil outlet is by pipeline 4 27, the right position of solenoid directional control valve 23, pipeline 5 28, hydraulic control one-way valve 24, pipeline 8 31, pipeline 9 32, hydraulic fluid port 15 in HM Hydraulic Motor, plug mesopore 36, arrive the left end of nonreturn valve core 37, overcome the application force of spring 41, nonreturn valve core 37 is pushed away valve seat, fluid is again through annular chamber 38, nonreturn valve core side opening 39, nonreturn valve core mesopore 40, oil through 35 enters HM Hydraulic Motor 10 epicoele, HM Hydraulic Motor 10 is driven to rotate forward, and rotated forward by output shaft driven gear 12, gear 12 is by being meshed with the tooth bar 14 be arranged on fixed frame right column 13, overcome the gravity of elevator platform 2, realize the enhancing action of elevator platform 2.The low pressure oil of HM Hydraulic Motor 10 cavity of resorption then gets back to fuel tank 17 by hydraulic fluid port under HM Hydraulic Motor 16, pipeline 6 29, the right position of solenoid directional control valve 23.
(2), hydraulic power drives the decline state of lifting mechanism: solenoid directional control valve 23 is in left position mode of operation, the oil inlet of oil pump 22 is by oil filter 21 oil suction from fuel tank 17, the high pressure oil of oil pump 22 oil outlet enters the control port of hydraulic control one-way valve 24 on the one hand by pipeline 4 27, the left position of solenoid directional control valve 23, pipeline 7 30, hydraulic control one-way valve 24 is oppositely opened; HM Hydraulic Motor 10 cavity of resorption is entered on the other hand by hydraulic fluid port 16 under pipeline 4 27, the left position of solenoid directional control valve 23, pipeline 6 29, HM Hydraulic Motor, drive HM Hydraulic Motor 10 contrarotation, and by output shaft driven gear 12 contrarotation, gear 12, by being meshed with the tooth bar 14 be arranged on fixed frame right column 13, realizes the down maneuver of elevator platform 2.The low pressure oil of HM Hydraulic Motor 10 epicoele then gets back to fuel tank 17 by hydraulic fluid port 15, pipeline 9 32, pipeline 8 31, hydraulic control one-way valve 24, pipeline 5 28, the left position of solenoid directional control valve 23 in HM Hydraulic Motor 10 oil through 35, nonreturn valve core mesopore 40, damping hole 34, plug mesopore 36, HM Hydraulic Motor.
(3), hydraulic power drives the halted state of lifting mechanism: solenoid directional control valve 23 is in meta mode of operation, if oil pump 22 does not quit work, the oil inlet of oil pump 22 is by oil filter 21 oil suction from fuel tank 17, the fluid of oil pump 22 oil outlet is by pipeline 4 27, solenoid directional control valve 23 meta gets back to fuel tank, the gravity of elevator platform 2 is engaged by gear 12 and tooth bar 14, and the load moment changed on HM Hydraulic Motor 10 output shaft, high pressure oil is formed at HM Hydraulic Motor 10 epicoele, due to balancing overflow valve 18, under the combined action of hydraulic control one-way valve 24, the gravity of elevator platform 2 forms high pressure oil at HM Hydraulic Motor 10 epicoele and is closed, cannot flow, the gravity of elevator platform 2 is balanced, elevator platform is made to be in halted state.
When driving lifting mechanism for main driving with mechanical power, hydraulic power drives the principle of work of lifting mechanism:
Oil pump 22 is in the state of quitting work, and solenoid directional control valve 23 is in meta mode of operation.
(1), the lifting state of lifting mechanism 2: the brake equipment of lifting motor 2 is in "on" position, remove and lifting motor 2 is braked, lifting motor 2 rotates forward, rotated forward by reductor 5 driven wheel 6, gear 6 and tooth bar 7 engage each other, overcome the gravity of elevator platform 2, realize the enhancing action of elevator platform 2.While elevator platform 2 promotes, gear 12 drives HM Hydraulic Motor 10 to rotate forward with engaging of tooth bar 14, HM Hydraulic Motor 10 epicoele is by oil through 35, nonreturn valve core mesopore 40 oil suction, and form negative pressure, act on nonreturn valve core 37, overcome the application force of spring 41, nonreturn valve core 37 is pushed away valve seat, again through nonreturn valve core side opening 39, annular chamber 38, plug mesopore 36, hydraulic fluid port 15 in HM Hydraulic Motor, pipeline 9 32, pipeline 8 31, hydraulic control one-way valve 24, pipeline 5 28, solenoid directional control valve 23 meta draws fluid from fuel tank 17, the hydraulic oil of HM Hydraulic Motor 10 cavity of resorption is then by hydraulic fluid port under HM Hydraulic Motor 16, pipeline 6 29, solenoid directional control valve 23 meta gets back to fuel tank 17, HM Hydraulic Motor 10 is in servo-actuated state.
(2), the decline state of lifting mechanism 2: the brake equipment of lifting motor 3 is in "on" position, remove and brake lifting motor 3, lifting motor 3 rotates backward, and is rotated backward by reductor 5 driven wheel 6, gear 6 and tooth bar 7 engage each other, and realize the down maneuver of elevator platform 2.While elevator platform 2 declines, gear 12 drives HM Hydraulic Motor 10 contrarotation with engaging of tooth bar 14, HM Hydraulic Motor 10 cavity of resorption draws fluid by hydraulic fluid port under HM Hydraulic Motor 16, pipeline 6 29, solenoid directional control valve 23 meta from fuel tank, the hydraulic oil of HM Hydraulic Motor 10 epicoele then gets back to fuel tank 17 by hydraulic fluid port 15, pipeline 9 32, pipeline 1, balancing overflow valve 18 in oil through 35, nonreturn valve core mesopore 40, damping hole 34, plug mesopore 36, HM Hydraulic Motor, and HM Hydraulic Motor 10 is in servo-actuated state.
(3), the halted state of lifting mechanism 2: lifting motor 3 is in power down mode, and the brake equipment of lifting motor 3 is in power down mode, brakes lifting motor 3, gear 6 stall, elevator platform 2 stop motion.Once the brake equipment et out of order of lifting motor 3, cannot realize braking lifting motor 3, hydraulic power drives lifting mechanism to play a protective role.Due to the brake equipment et out of order of lifting motor 3, cannot realize braking lifting motor 3, the gravity of elevator platform 2 is engaged by gear 12 and tooth bar 14, and the load moment changed on HM Hydraulic Motor 10 output shaft, high pressure oil is formed at HM Hydraulic Motor 10 epicoele, under combined action due to balancing overflow valve 18, hydraulic control one-way valve 24, the gravity of elevator platform 2 forms high pressure oil at HM Hydraulic Motor 10 epicoele and is closed, cannot flow, the gravity of elevator platform 2 is balanced, and makes elevator platform 2 be in halted state.If balancing overflow valve 18 or hydraulic control one-way valve 24 also et out of order, then the gravity of elevator platform 2 can be flowed out by the damping hole 34 being arranged on nonreturn valve core 37 left end in HM Hydraulic Motor in hydraulic fluid port 15 at HM Hydraulic Motor 10 epicoele formation high pressure oil, the fluid that can flow out HM Hydraulic Motor 10 epicoele due to damping hole 34 produces shock damping action, limit the contrarotation speed of HM Hydraulic Motor 10, namely limit HM Hydraulic Motor 10 output shaft cog 12 contrarotation speed, be equivalent to the descending speed limiting elevator platform 2, even if ensure that elevator platform 2 is nonserviceabled, also can only move down according to very low speed, until elevator platform 2 kiss the earth, or cover stroke, avoid elevator platform 2 to decline fast and form impact, produce loss.
When driving lifting mechanism for main driving with hydraulic power, mechanical power drives the state of lifting mechanism:
(1), hydraulic power drive lifting mechanism elevator platform 2 is promoted and down maneuver time, lifting motor 3 is in power down mode, and the brake equipment of lifting motor 3 is in "on" position, removes the braking to lifting motor 3, and lifting motor 3 is in servo-actuated state.
(2), hydraulic power drives lifting mechanism when quitting work, and lifting motor 3 is in power down mode, and the brake equipment of lifting motor 3 is in power down mode, brakes, play a protective role to elevator platform 2 to the realization of lifting motor 3.
Beneficial effect is: a kind of Dual Drive lifting mechanism provided by the invention, it includes mechanical power simultaneously and drives lifting mechanism and hydraulic power to drive lifting mechanism two to overlap power driven lifting mechanism, its two covers power driven lifting mechanism can work alone respectively, also can work simultaneously.
A kind of Dual Drive lifting mechanism provided by the invention, wherein any a set of driving lifting mechanism et out of order, a set of driving lifting mechanism can enter main driving condition at once in addition, realizes the continuous working of lifting mechanism.Simultaneously; in Dual Drive lifting mechanism, any a set of driving lifting mechanism is that main driving is when carrying out work; a set of driving lifting mechanism automatically as safety guard, will be protected lifting mechanism, improves reliability and the safety of lifting mechanism work in addition.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a Dual Drive lifting mechanism, is characterized in that comprising: fixed frame and elevator platform, and comprises mechanical power jacking system and hydraulic power jacking system;
Described mechanical power jacking system comprises lifting motor, reductor, gear, tooth bar; Described lifting motor is with brake equipment; 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 is passed to gear drive gear and rotates after being slowed down by reductor; Described tooth bar is arranged on the fixed frame left column of fixed frame, and engage each other with gear, by being arranged on the rotary motion of the lifting motor on elevator platform and being rotated by reductor deceleration, driven wheel, realize the up-and-down movement of gear in tooth bar vertical direction, realize the lifting action of elevator platform;
Described hydraulic power jacking system comprises hydraulic efficiency pressure system, HM Hydraulic Motor, gear, tooth bar, described HM Hydraulic Motor is arranged on HM Hydraulic Motor mount pad, and described HM Hydraulic Motor mount pad is fixed on elevator platform, the output shaft of described HM Hydraulic Motor is provided with gear, described tooth bar is arranged on fixed frame right column, and engages each other with gear, described hydraulic efficiency pressure system comprises fuel tank, oil filter, oil pump, balancing overflow valve, by pass valve, solenoid directional control valve, hydraulic control one-way valve and some pipelines, described pipeline is pipeline one, pipeline two, pipeline three, pipeline four, pipeline five, pipeline six, pipeline seven, pipeline eight, pipeline nine, pipeline two is set between described fuel tank and oil filter, pipeline three is set between described oil filter and oil pump, pipeline four is set between described oil pump and solenoid directional control valve, described fuel tank, by connecting by pass valve connecting pipeline four, arranges pipeline five between described solenoid directional control valve and hydraulic control one-way valve, described HM Hydraulic Motor to have in HM Hydraulic Motor hydraulic fluid port under hydraulic fluid port and HM Hydraulic Motor, described HM Hydraulic Motor is provided with plug in hydraulic fluid port, plug offers plug mesopore, oil through is also had on the right side of plug, the inside of described oil through is provided with check valve container cavity, in check valve container cavity, nonreturn valve core is installed, nonreturn valve core is sway in its container cavity, the inwall of nonreturn valve core and its container cavity forms annular chamber, the inside of described nonreturn valve core offers nonreturn valve core mesopore, the sidewall of nonreturn valve core offers some nonreturn valve core side openings, the left end of nonreturn valve core has the spool conical surface, between plug and nonreturn valve core, spring is installed, the spool conical surface of described spring handle nonreturn valve core left end is pressed on valve seat, the left end of nonreturn valve core also offers damping hole, fluid in HM Hydraulic Motor epicoele passes through oil through when discharging, nonreturn valve core mesopore, damping hole, plug mesopore, in HM Hydraulic Motor, hydraulic fluid port is connected with the pipeline nine of hydraulic efficiency pressure system, described hydraulic efficiency pressure system is by hydraulic fluid port, plug mesopore in pipeline nine, HM Hydraulic Motor, arrive the left end of nonreturn valve core, overcome the application force of spring, nonreturn valve core is pushed away valve seat, fluid enters HM Hydraulic Motor epicoele through annular chamber, nonreturn valve core side opening, nonreturn valve core mesopore, oil through again, in described HM Hydraulic Motor, hydraulic fluid port is connected with the pipeline nine of hydraulic efficiency pressure system, and under HM Hydraulic Motor, hydraulic fluid port is connected with the pipeline six of hydraulic efficiency pressure system, pipeline seven is set between described hydraulic control one-way valve and pipeline six, pipeline eight is set between described hydraulic control one-way valve and pipeline nine, pipeline one is set between described by pass valve and pipeline nine, when hydraulic efficiency pressure system provides high pressure oil by hydraulic fluid port in pipeline nine and HM Hydraulic Motor to HM Hydraulic Motor epicoele, driving HM Hydraulic Motor rotates forward, and rotated forward by output shaft driven gear, gear, by being meshed with the tooth bar be arranged on fixed frame right column, realizes the enhancing action of elevator platform, when hydraulic fluid port under hydraulic efficiency pressure system is by pipeline six and HM Hydraulic Motor provides high pressure oil to HM Hydraulic Motor cavity of resorption, drive HM Hydraulic Motor contrarotation, and by the contrarotation of output shaft driven gear, gear, by being meshed with the tooth bar be arranged on fixed frame right column, realizes the down maneuver of elevator platform.
2. a kind of Dual Drive lifting mechanism according to claim 1, it is characterized in that: the brake equipment of described lifting motor realizes braking by dead electricity to lifting electricity, by electricly realizing brake off to lifting motor, the brake equipment 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 equipment of lifting motor realizes working independently, and namely realizes braking by dead electricity to lifting motor, by electricly realizing brake off to lifting motor;
Co-ordination pattern: the brake equipment of lifting motor and lifting motor is energized simultaneously, brake equipment brake off, lifting motor rotates; The brake equipment dead electricity simultaneously of lifting motor and lifting motor, lifting motor stall, brake equipment realizes braking to lifting motor.
3. a kind of Dual Drive lifting mechanism according to claim 1, is characterized in that: arrange guide piece between described fixed frame and elevator platform.
4. a kind of Dual Drive lifting mechanism according to claim 1, is characterized in that: described lifting motor is common electric machine or servomotor.
5. a kind of Dual Drive lifting mechanism according to claim 1, is characterized in that: the balancing overflow valve in described hydraulic efficiency pressure system and hydraulic control one-way valve play equilibrium activity, the gravity of balance lifting frame.
6. a kind of Dual Drive lifting mechanism according to claim 1, is characterized in that: the Median Function of the solenoid directional control valve in described hydraulic efficiency pressure system is " H " type.
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|---|---|---|---|---|
| FI931174A (en) * | 1993-03-17 | 1994-09-18 | Kone Oy | Drive device for an elevator |
| JPH1025077A (en) * | 1996-07-05 | 1998-01-27 | Fuji Denki Seisakusho:Kk | Hoist for home elevator |
| CN203173620U (en) * | 2013-02-28 | 2013-09-04 | 黄志全 | Dual-drive hydraulic power pack used for hydraulic elevator |
| CN203221092U (en) * | 2013-03-08 | 2013-10-02 | 常州天拓重工机械厂 | Dual-drive three-roller veneer reeling machine |
| CN103334614A (en) * | 2013-07-16 | 2013-10-02 | 江西中天机械有限公司 | Driving device for lifting platform of stereo garage |
| CN203767808U (en) * | 2014-01-29 | 2014-08-13 | 河海大学常州校区 | Dual-drive lifting mechanism |
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|---|---|
| CN103787177A (en) | 2014-05-14 |
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