Hydraulic self-synchronous device
Technical field:
The invention belongs to the hydraudynamic drive technical field, in particularly solving, a kind of hydraulic self-synchronous device of soft start of high power motor.
Background technique:
The existing hydraudynamic drive product that is used for the soft start of motor mainly is a fluid coupling, comprise load limiting type of constant filling fluid coupling and variable speed fluid coupling, in all trades and professions a large amount of application is arranged, be that present home and abroad is used for electric machine soft starting and the most widely used two kinds of products of overload protection, it simultaneously also is the energy-conserving product project that state key is promoted, but, coupler has the slippage of 3-5%, it is the power loss of 3-5%, the distance-limiting type coupler does not have good soft starting characteristic in addition, in being difficult to use in, the soft start of high power motor; And variable speed fluid coupling also needs to join in addition cooling system and electric actuator, and structure is too complicated, in addition, except self loss of coupler, also has the power loss of oil pump systems.
No sliding hydraulic machinery coupler by Harbin Institute of Technology's invention, its structure be input shaft and output shaft two ends through bearing block support on support, the coupler housing is made up of flanged (FLGD) cylinder in two ends and left and right sides end cap, be provided with several bucket wheels in the housing, each bucket wheel is made up of several bucket tooths, bucket wheel links to each other with planet wheel by bucket wheel axle, centrifugal moment to the bucket wheel effect reaches sun gear by planet wheel, wherein sun gear and planet wheel outer gearing, sun gear links to each other with output shaft, input shaft and left end cap are rigidly connected, motor drives the housing rotation by input shaft, bucket wheel in the housing reaches the effect of flexible transmission because centrifugal power produces moment by planet wheel balanced load moment, and specified transmission does not have slippage.Its deficiency is that complex structure, size are big; The time of soft start is difficult to satisfy the start request of heavy-duty motor; The power density of transmitting is not enough, promotes thereby it is difficult on the market, in addition because integral body is too heavy, is difficult to solve the excessive problem of centrifugal force of bucket wheel during high rotating speed, and cost is too high makes it be difficult to promote on market.
Summary of the invention:
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of hydraulic self-synchronous device can realize not having slippage ground transmitted power, loss except windage and bearing, transmission efficiency reaches more than 99.5%, compare with fluid coupling and approximately can save energy about 4%, can provide in addition and reach 2 minutes adjustable starting time, compare with variable speed fluid coupling and to have omitted electric actuator, and control system, oil supply system and cooling system have also been omitted simultaneously, saved a large amount of cooling waters, and simple in structure, compact, and reliability improves greatly.
The present invention can reach by following measure:
A kind of hydraulic self-synchronous device, be provided with input shaft, output shaft, solid of rotation, bucket wheel, planet wheel, fusible plug, it is characterized in that solid of rotation is made up of shell and left and right sides end cap, a rotating body is provided with support, bucket wheel is bearing on solid of rotation left end cap and the support by bucket wheel axle, and the planet wheel cantilever support meshes in planet wheel and the sun gear on bucket wheel axle, input shaft is connected with solid of rotation, and sun gear is connected with output shaft.
The present invention can be provided with the casing of sealing, input shaft and output shaft are bearing on the casing through bearing, casing, solid of rotation constitute peripheral pump jointly, solid of rotation is as the peripheral pump rotor, the shell of solid of rotation is provided with gusset, and gusset is as the blade of rotor, and casing is as the pump housing of peripheral pump, be provided with oil circuit in the casing, the oil in the casing enters a rotating body through peripheral pump pump to oil circuit.
Oil circuit among the present invention enters bearing support by casing through throttling arrangement, enters a rotating body again, and with participation work and lubricating bearings, throttling arrangement can be regulated the time of soft start.
The present invention can be provided with air-strainer above casing, with convenient oiling and ventilative.
The present invention can also be provided with the liquid level liquid thermometer on casing, to observe oil level and oil temperature.
The present invention is owing to be provided with support in housing, gear on the bucket wheel changes cantilever support into, outer gearing planetary gear construction with no sliding hydraulic machinery coupler, be improved to internal-meshing planetary gear construction, thereby make transferring power density increase 2-4 doubly, the centrifugal force problem that is difficult to solve bucket wheel when also having solved high rotating speed, and own vol is greatly reduced, cost reduces greatly, and utilize self revolving part to design a cover peripheral pump, fuel feeding when starting, realize soft start, when operation, work hardly, thereby realize full-automatic Soft Start-up Process, have compact structure, simple and practical, no slippage transmission, transferring power density height, the functional reliability height, cost is low, advantage such as be convenient to promote the use of.
Description of drawings:
Fig. 1 is a kind of structural representation of the present invention, also is a kind of embodiment's structural representation.
Fig. 2 is the B-B sectional view of Fig. 1.
Embodiment:
Below in conjunction with accompanying drawing the present invention is further described:
As shown in drawings, a kind of hydraulic self-synchronous device, be provided with the casing 1 of sealing, input shaft 2 and output shaft 13 are bearing on the casing 1 through bearing, solid of rotation is by shell 17 and left end cap 3, right end cap 9 is formed, a rotating body is provided with support 16, bucket wheel 15 is bearing on the left end cap 3 and support 16 of solid of rotation by bucket wheel axle 4, planet wheel 8 cantilever support are on bucket wheel axle 4, planet wheel 8 and sun gear 6 interior engagements, input shaft 2 is fixedlyed connected with solid of rotation left end cap 3, sun gear 6 is fixed on the outward flange 7, outward flange 7 is connected with output shaft 13, casing 1 of the present invention, solid of rotation constitutes peripheral pump jointly, solid of rotation is as the peripheral pump rotor, the shell of solid of rotation is provided with gusset 5, gusset 5 is as the blade of rotor, and casing 1 is provided with oil circuit 12 as the pump housing of peripheral pump in the casing, oil in the casing 1 enters a rotating body through peripheral pump pump to oil circuit 12, oil circuit 12 among the present invention enters bearing support 10 by casing through throttling arrangement, enters a rotating body again, with participation work and lubricating bearings, throttling arrangement can be regulated the time of soft start, in addition, the present invention can be provided with air-strainer 14 above casing 1, with convenient oiling and ventilative; Can also on casing 1, be provided with liquid level liquid thermometer 11, to observe oil level and oil temperature.
Working procedure of the present invention is: working machine connects input shaft by coupling, the rotation of driven rotary body, peripheral pump work, pump oil enters solid of rotation in the casing, the while lubricating bearings, at this moment a rotating body begins to form garden ring-type liquid level, and the oil-filled amount of a rotating body can spill automatically by shell when a certain amount of, and bucket wheel begins oil-filled, under action of centrifugal force, produce moment, pass through planet wheel, sun gear, output shaft is delivered to load, until centrifugal moment is can balanced load the time, hydraulic self-synchronous device does not have slippage ground transferring power, under the declared working condition, peripheral pump is worked hardly, during load variations, bucket wheel self rotation can be regulated filling amount and come the autobalance load, it can enter the oil-feed flow of solid of rotation by adjusting, regulates the time of soft start, and declared working condition does not have slippage simultaneously.
The present invention is owing to be provided with support in housing, gear on the bucket wheel changes cantilever support into, outer gearing planetary gear construction with no sliding hydraulic machinery coupler, be improved to internal-meshing planetary gear construction, thereby make transferring power density increase 2-4 doubly, the centrifugal force problem that is difficult to solve bucket wheel when also having solved high rotating speed, and own vol is greatly reduced, cost reduces greatly, and utilize self revolving part to design a cover peripheral pump, fuel feeding when starting, realize soft start, when operation, work hardly, thereby realize full-automatic Soft Start-up Process, has compact structure, simple and practical, no slippage transmission, transferring power density height, the functional reliability height, cost is low, advantage such as is convenient to promote the use of.