CN207080430U - A kind of hydraulic control system for the double drive devices at a slow speed of large-sized grinder - Google Patents

Abstract

A kind of hydraulic control system for the double drive devices at a slow speed of large-sized grinder, it is related to a kind of hydraulic control system of drive device, including control loop, the control loop includes open circuit and closed circuit, Solenoid ball valve A（21）P2 mouths, Solenoid ball valve B（22）P2 mouths, pressure switch A（30.1）Oil inlet and brake B（17.2）Oil inlet be connected, Solenoid ball valve A（21）P4 mouths, Solenoid ball valve B（22）P4 mouths, pressure switch B（30.2）Oil inlet and brake A（17.1）Oil inlet be connected；For the utility model by setting closed circuit to drive the rotation of grinding machine, completion drives at a slow speed this own job function；Open circuit control brake, clutch are set, so as to realize grinding machine normal operating conditions and the at a slow speed interlocking between driving condition, it is ensured that large-sized grinder is capable of the purpose of safe operation when in inspecting state.

Description

A kind of hydraulic control system for the double drive devices at a slow speed of large-sized grinder

【Technical field】

A kind of hydraulic control system of drive device is the utility model is related to, it is double to be used for large-sized grinder more particularly, to one kind The hydraulic control system of drive device at a slow speed.

【Background technology】

Grinding machine is a kind of very universal milling equipment of application, typically there is two kinds of working conditions：Normal grinding working condition And inspecting state, rotating speed is generally 14-30r/min when grinding machine is in grinding working condition, is driven by main motor；When grinding machine is in Rotating speed requires very low, generally 0.1r/min or so during inspecting state, is driven by drive device at a slow speed, drive device conduct at a slow speed Its effect of grinding machine important component is not allowed to substitute, and is installing with security requirement of the maintenance period grinding machine to slow driving device very Height, all the time, slow driving device are driven using motor, referred to as electronic slow drive, with the increase of grinding machine specification, the installation of grinding machine Power is also increasing, due to Gear Processing and carrying, will turn into development trend using the grinding machine of twin-engined drives, at this Because load increases in the case of kind, in addition in order to reduce the gear-driven unbalance loading of size, and decelerator speed is than the limitation of design, It can not meet require that using single slow driving device, the configuration application of double slow driving devices will turn into mainstay scheme, from Synchronism, the reliability of braking that space, two slow driving devices drive, and big little gear and main reducing gear carrying and speed Than optimization etc. analysis, using double electronic slow driving devices not only control it is upper it is relatively difficult to achieve, cost is higher, and security, can It is not high by property, therefore do not used by home and abroad user.

【The content of the invention】

In order to overcome the shortcomings of in background technology, the utility model discloses a kind of for the double drive devices at a slow speed of large-sized grinder Hydraulic control system, by set closed circuit drive grinding machine rotation, completion drive this own job function at a slow speed；Setting is opened Formula circuit controls brake, clutch, so as to realize grinding machine normal operating conditions and the at a slow speed interlocking between driving condition, it is ensured that Large-sized grinder is capable of the purpose of safe operation when in inspecting state.

In order to realize the goal of the invention, the utility model adopts the following technical scheme that：

A kind of hydraulic control system for the double drive devices at a slow speed of large-sized grinder, including fuel tank 1, in addition to control back Road, the control loop include open circuit and closed circuit；

The closed circuit includes transfer tube, slippage pump, proportion electro-magnet and stroking mechanism, safety valve A, safety valve B, benefit Oily check valve A, repairing check valve B, repairing check valve C, repairing check valve D, repairing check valve E, repairing check valve F, auxiliary are overflow Flow valve, outlet filter, heat exchange valve, heat exchange overflow valve, cooler, return filter, oil absorption filter, pressure sensor A, pressure Force snesor B, pressure sensor C, pressure sensor D, balanced valve A, balanced valve B, hydraulic motor A, hydraulic motor B, brake A, brake B, decelerator A and decelerator B, the T mouths of the proportion electro-magnet and stroking mechanism, the A mouths of oil absorption filter, oil return The B mouths of filter, hydraulic motor A T mouths, hydraulic motor B T mouths are connected with fuel tank respectively with the T mouths of auxiliary overflow valve, institute State the S mouths of slippage pump with the B mouths of oil absorption filter to be connected, the A mouths of the transfer tube, safety valve A P mouths, repairing check valve A B mouths, the A mouths of heat exchange valve, balanced valve A A mouths be connected with balanced valve B A mouths, B mouths, the safety valve B P of the transfer tube Mouth, repairing check valve B B mouths, the B mouths of heat exchange valve, balanced valve A A1 mouths are connected with balanced valve B A1 mouths, the slippage pump P mouths be connected with the A mouths of outlet filter, the B mouths of the outlet filter and the P mouths of proportion electro-magnet and stroking mechanism, Repairing check valve A A mouths, repairing check valve B A mouths, repairing check valve C A mouths, repairing check valve D A mouths, repairing are unidirectional Valve E A mouths, repairing check valve F A mouths, safety valve A T mouths, safety valve B T mouths are connected with the P mouths of auxiliary overflow valve, institute The P mouths for stating heat exchange valve are connected with the P mouths of heat exchange overflow valve, and the T mouths of the heat exchange overflow valve are connected with the A mouths of cooler, The B mouths of the cooler are connected with the A mouths of return filter, the B mouths of the repairing check valve C, hydraulic motor A B mouths, pressure Force snesor A oil inlet is connected with balanced valve A B1 mouths, the B mouths of the repairing check valve D, hydraulic motor B B mouths, pressure Force snesor B oil inlet is connected with balanced valve B B1 mouths, the B mouths of the repairing check valve E, hydraulic motor A A mouths, pressure Force snesor C oil inlet is connected with balanced valve A B mouths, the B mouths of the repairing check valve F, hydraulic motor B A mouths, pressure Force snesor D oil inlet is connected with balanced valve B B mouths；

The open circuit includes controlling pump, electromagnetic relief valve, Solenoid ball valve A, Solenoid ball valve B, Solenoid ball valve C, electromagnetism Reversal valve A, solenoid directional control valve B, hydraulic control one-way valve A, hydraulic control one-way valve B, Double throttle check valve A, Double throttle check valve B, shunting Motor A, diffluence motor B, clutch driving hydraulic cylinder A, clutch driving hydraulic cylinder B, clutch driving hydraulic cylinder C, clutch Driving hydraulic cylinder D, travel switch A, travel switch B, travel switch C, travel switch D, pressure switch A, pressure switch B, clutch Device A and clutch B；The S mouths of the controlling pump, Solenoid ball valve C T mouths, the T mouths of electromagnetic relief valve, solenoid directional control valve A T mouths, Solenoid directional control valve B T mouths, diffluence motor A T mouths, diffluence motor B T mouths are also connected with fuel tank respectively, the controlling pump P mouths, solenoid directional control valve A P mouths, solenoid directional control valve B P mouths, Solenoid ball valve C P mouths, P mouths, the Solenoid ball valve of electromagnetic relief valve A P1 mouths are connected with Solenoid ball valve A P3 mouths, and the A mouths of the solenoid directional control valve A are connected with hydraulic control one-way valve A A1 mouths, The B mouths of the solenoid directional control valve A are connected with hydraulic control one-way valve A A mouths, the A mouths and hydraulic control one-way valve of the solenoid directional control valve B B A1 mouths are connected, and the B mouths of the solenoid directional control valve B are connected with hydraulic control one-way valve B A mouths, the B of the hydraulic control one-way valve A Mouth is connected with Double throttle check valve A A mouths, and the B1 mouths of the hydraulic control one-way valve A are connected with Double throttle check valve A A1 mouths, institute State hydraulic control one-way valve B B mouths with Double throttle check valve B A mouths to be connected, the B1 mouths of the hydraulic control one-way valve B and double one-way throttles Valve B A1 mouths are connected, and the B mouths of the Double throttle check valve A are connected with diffluence motor A P mouths, Double throttle check valve A B1 Mouth is connected with clutch driving hydraulic cylinder A rod chamber A mouths, clutch driving hydraulic cylinder B rod chamber A mouths, the shunting Motor A P1 mouths are connected with clutch driving hydraulic cylinder A rodless cavity B1 mouths, diffluence motor A P2 mouths and clutch driving Hydraulic cylinder B rodless cavity B2 mouths are connected, and the B mouths of the Double throttle check valve B are connected with diffluence motor B P mouths, double unidirectional Choke valve B B1 mouths are connected with clutch driving hydraulic cylinder C rod chamber A mouths, clutch driving hydraulic cylinder D rod chamber A mouths Connect, the P1 mouths of the diffluence motor B are connected with clutch driving hydraulic cylinder C rodless cavity B1 mouths, diffluence motor B P2 mouths and Clutch driving hydraulic cylinder D rodless cavity B2 mouths are connected, the A mouths of the Solenoid ball valve C and Solenoid ball valve B P1 mouths, electromagnetism Ball valve B P3 mouths are connected, the P2 mouths of the Solenoid ball valve A, Solenoid ball valve B P2 mouths, pressure switch A oil inlet and braking Device B oil inlet is connected, the P4 mouths of the Solenoid ball valve A, Solenoid ball valve B P4 mouths, pressure switch B oil inlet and braking Device A oil inlet is connected, and the travel switch A and travel switch B are arranged on the left and right two on clutch A straight-line trajectories Individual extreme position, the travel switch C and travel switch D are arranged on the limit of left and right two on clutch B straight-line trajectories Position；

The described hydraulic control system for being used for the double drive devices at a slow speed of large-sized grinder, the drive of the transfer tube, controlling pump Dynamic motor, the magnetic valve of proportion electro-magnet and stroking mechanism, pressure sensor A, pressure sensor B, pressure sensor C, pressure Sensor D, electromagnetic relief valve, Solenoid ball valve A, Solenoid ball valve B, Solenoid ball valve C, solenoid directional control valve A, solenoid directional control valve B, stroke Switch A, travel switch B, travel switch C, travel switch D, pressure switch A, pressure switch B turn together with for measuring grinding mill barrel The photoelectric encoder of speed is respectively connected to controller.

Due to using technical scheme as described above, the utility model has the advantages that：

Hydraulic control system described in the utility model for the double drive devices at a slow speed of large-sized grinder, comprising enclosed Loop is not only separate but also interrelated with open circuit, the rotation for driving grinding machine by setting closed circuit to be used for, completes slow Speed drives this own job function；Open circuit is set to be used for control brake, clutch, so as to realize grinding machine normal operating conditions With the interlocking between driving condition at a slow speed, it is ensured that large-sized grinder is capable of the purpose of safe operation when in inspecting state；This reality Reasonable, energy-saving notable with new design, using effect is good.

【Brief description of the drawings】

Fig. 1 is structural representation of the present utility model；

In figure：1st, fuel tank；2nd, transfer tube；3rd, slippage pump；4th, proportion electro-magnet and stroking mechanism；5.1st, safety valve A；5.2、 Safety valve B；6.1st, repairing check valve A；6.2nd, repairing check valve B；6.3rd, repairing check valve C；6.4th, repairing check valve D；6.5、 Repairing check valve E；6.6th, repairing check valve F；7th, auxiliary overflow valve；8th, outlet filter；9th, heat exchange valve；10th, exchange heat overflow valve； 11st, cooler；12nd, return filter；13rd, oil absorption filter；14.1st, pressure sensor A；14.2nd, pressure sensor B；14.3、 Pressure sensor C；14.4th, pressure sensor D；15.1st, balanced valve A；15.2nd, balanced valve B；16.1st, hydraulic motor A；16.2, liquid Pressure motor B；17.1st, brake A；17.2nd, brake B；18.1st, decelerator A；18.2nd, decelerator B；19th, controlling pump；20th, electromagnetism Overflow valve；21st, Solenoid ball valve A；22nd, Solenoid ball valve B；23rd, Solenoid ball valve C；24.1st, solenoid directional control valve A；24.2, electromagnetic switch Valve B；25.1st, hydraulic control one-way valve A；25.2nd, hydraulic control one-way valve B；26.1st, Double throttle check valve A；26.2nd, Double throttle check valve B； 27.1st, diffluence motor A；27.2nd, diffluence motor B；28.1st, clutch driving hydraulic cylinder A；28.2nd, clutch driving hydraulic cylinder B； 28.3, clutch driving hydraulic cylinder C；28.4th, clutch driving hydraulic cylinder D；29.1st, travel switch A；29.2nd, travel switch B； 29.3rd, travel switch C；29.4th, travel switch D；30.1st, pressure switch A；30.2nd, pressure switch B；31.1st, clutch A； 31.2nd, clutch B.

【Embodiment】

The utility model can be explained in more detail by the following examples, the utility model is not limited to following Embodiment, open the purpose of this utility model are intended to protect all changes and improvements in the scope of the utility model.

The hydraulic control system for being used for the double drive devices at a slow speed of large-sized grinder with reference to described in accompanying drawing 1, including fuel tank 1, also Including control loop, the control loop includes open circuit and closed circuit；The closed circuit includes transfer tube 2, repairing Pump 3, proportion electro-magnet and stroking mechanism 4, safety valve A5.1, safety valve B5.2, repairing check valve A6.1, repairing check valve B6.2, repairing check valve C6.3, repairing check valve D6.4, repairing check valve E6.5, repairing check valve F6.6, auxiliary overflow valve 7, Outlet filter 8, heat exchange valve 9, heat exchange overflow valve 10, cooler 11, return filter 12, oil absorption filter 13, pressure sensing Device A14.1, pressure sensor B14.2, pressure sensor C14.3, pressure sensor D14.4, balanced valve A15.1, balanced valve B15.2, hydraulic motor A16.1, hydraulic motor B16.2, brake A17.1, brake B17.2, decelerator A18.1 and decelerator B18.2, the T mouths of the proportion electro-magnet and stroking mechanism 4, the A mouths of oil absorption filter 13, B mouths, the hydraulic pressure of return filter 12 Motor A16.1 T mouths, hydraulic motor B16.2 T mouths are connected with fuel tank 1 respectively with the T mouths of auxiliary overflow valve 7, the repairing The S mouths of pump 3 are connected with the B mouths of oil absorption filter 13, the A mouths of the transfer tube 2, safety valve A5.1 P mouths, repairing check valve A6.1 B mouths, the A mouths of heat exchange valve 9, balanced valve A15.1 A mouths are connected with balanced valve B15.2 A mouths, the transfer tube 2 B mouths, safety valve B5.2 P mouths, repairing check valve B6.2 B mouths, the B mouths of heat exchange valve 9, balanced valve A15.1 A1 mouths and balance Valve B15.2 A1 mouths are connected, and the P mouths of the slippage pump 3 are connected with the A mouths of outlet filter 8, the outlet filter 8 B mouths and proportion electro-magnet and the P mouths of stroking mechanism 4, repairing check valve A6.1 A mouths, repairing check valve B6.2 A mouths, mend Oily check valve C6.3 A mouths, repairing check valve D6.4 A mouths, repairing check valve E6.5 A mouths, repairing check valve F6.6 A Mouth, safety valve A5.1 T mouths, safety valve B5.2 T mouths are connected with the P mouths of auxiliary overflow valve 7, the P mouths of the heat exchange valve 9 and The P mouths of heat exchange overflow valve 10 are connected, and the T mouths of the heat exchange overflow valve 10 are connected with the A mouths of cooler 11, the cooler 11 B mouths are connected with the A mouths of return filter 12, the B mouths of the repairing check valve C6.3, hydraulic motor A16.1 B mouths, Pressure sensor A14.1 oil inlet is connected with balanced valve A15.1 B1 mouths, B mouths, the hydraulic pressure of the repairing check valve D6.4 Motor B16.2 B mouths, pressure sensor B14.2 oil inlet are connected with balanced valve B15.2 B1 mouths, and the repairing is unidirectional Valve E6.5 B mouths, hydraulic motor A16.1 A mouths, pressure sensor C14.3 oil inlet are connected with balanced valve A15.1 B mouths Connect, the B mouths of the repairing check valve F6.6, hydraulic motor B16.2 A mouths, pressure sensor D14.4 oil inlet and balanced valve B15.2 B mouths are connected；The open circuit includes controlling pump 19, electromagnetic relief valve 20, Solenoid ball valve A21, Solenoid ball valve B22, Solenoid ball valve C23, solenoid directional control valve A24.1, solenoid directional control valve B24.2, hydraulic control one-way valve A25.1, hydraulic control one-way valve B25.2, Double throttle check valve A26.1, Double throttle check valve B26.2, diffluence motor A27.1, diffluence motor B27.2, clutch Driving hydraulic cylinder A28.1, clutch driving hydraulic cylinder B28.2, clutch driving hydraulic cylinder C28.3, clutch driving hydraulic cylinder D28.4, travel switch A29.1, travel switch B29.2, travel switch C29.3, travel switch D29.4, pressure switch A30.1, Pressure switch B30.2, clutch A31.1 and clutch B31.2；The S mouths of the controlling pump 19, Solenoid ball valve C23 T mouths, electricity The T mouths of magnetic overflow valve 20, solenoid directional control valve A24.1 T mouths, solenoid directional control valve B24.2 T mouths, diffluence motor A27.1 T mouths, Diffluence motor B27.2 T mouths are also connected with fuel tank 1 respectively, the P mouths of the controlling pump 19, solenoid directional control valve A24.1 P mouths, Solenoid directional control valve B24.2 P mouths, Solenoid ball valve C23 P mouths, the P mouths of electromagnetic relief valve 20, Solenoid ball valve A21 P1 mouths and electricity Magnetic ball valve A21 P3 mouths are connected, and the A mouths of the solenoid directional control valve A24.1 are connected with hydraulic control one-way valve A25.1 A1 mouths, The B mouths of the solenoid directional control valve A24.1 are connected with hydraulic control one-way valve A25.1 A mouths, the A mouths of the solenoid directional control valve B24.2 It is connected with hydraulic control one-way valve B25.2 A1 mouths, the B mouths of the solenoid directional control valve B24.2 and hydraulic control one-way valve B25.2 A mouths It is connected, the B mouths of the hydraulic control one-way valve A25.1 are connected with Double throttle check valve A26.1 A mouths, the hydraulic control one-way valve A25.1 B1 mouths are connected with Double throttle check valve A26.1 A1 mouths, the B mouths of the hydraulic control one-way valve B25.2 and double one-way throttles Valve B26.2 A mouths are connected, and the B1 mouths of the hydraulic control one-way valve B25.2 are connected with Double throttle check valve B26.2 A1 mouths, described Double throttle check valve A26.1 B mouths are connected with diffluence motor A27.1 P mouths, Double throttle check valve A26.1 B1 mouths with from Clutch driving hydraulic cylinder A28.1 rod chamber A mouths, clutch driving hydraulic cylinder B28.2 rod chamber A mouths are connected, described point Stream motor A27.1 P1 mouths are connected with clutch driving hydraulic cylinder A28.1 rodless cavity B1 mouths, diffluence motor A27.1 P2 Mouth is connected with clutch driving hydraulic cylinder B28.2 rodless cavity B2 mouths, the B mouths of the Double throttle check valve B26.2 and shunting Motor B27.2 P mouths are connected, Double throttle check valve B26.2 B1 mouths and clutch driving hydraulic cylinder C28.3 rod chamber A Mouth, clutch driving hydraulic cylinder D28.4 rod chamber A mouths are connected, P1 mouths and the clutch driving of the diffluence motor B27.2 Hydraulic cylinder C28.3 rodless cavity B1 mouths are connected, diffluence motor B27.2 P2 mouths and clutch driving hydraulic cylinder D28.4 nothing Rod cavity B2 mouths are connected, and the A mouths of the Solenoid ball valve C23 are connected with Solenoid ball valve B22 P1 mouths, Solenoid ball valve B22 P3 mouths Connect, the P2 mouths of the Solenoid ball valve A21, Solenoid ball valve B22 P2 mouths, pressure switch A30.1 oil inlet and brake B17.2 Oil inlet be connected, the P4 mouths of the Solenoid ball valve A21, Solenoid ball valve B22 P4 mouths, pressure switch B30.2 oil inlet It is connected with brake A17.1 oil inlet, the travel switch A29.1 and travel switch B29.2 are arranged on clutch A31.1 The extreme position of left and right two on straight-line trajectory, the travel switch C29.3 and travel switch D29.4 are arranged on clutch The extreme position of left and right two on B31.2 straight-line trajectories；The transfer tube 2, the motor of controlling pump 19, ratio electromagnetism The magnetic valve of iron and stroking mechanism 4, pressure sensor A14.1, pressure sensor B14.2, pressure sensor C14.3, pressure pass Sensor D14.4, electromagnetic relief valve 20, Solenoid ball valve A21, Solenoid ball valve B22, Solenoid ball valve C23, solenoid directional control valve A24.1, electricity Magnetic reversal valve B24.2, travel switch A29.1, travel switch B29.2, travel switch C29.3, travel switch D29.4, pressure are opened Close A30.1, pressure switch B30.2 is respectively connected to controller together with the photoelectric encoder for measuring grinding mill barrel rotating speed.

Implement the hydraulic control system described in the utility model for the double drive devices at a slow speed of large-sized grinder, have as follows Feature：

" the invariable power regulation " 1. of hydraulic system closed circuit

The realization driven at a slow speed of grinding machine is completed by the closed circuit in the system, and transfer tube 2 is with constant in closed circuit Rotating speed is rotated, and hydraulic motor A16.1, hydraulic motor B16.2 are controlled by changing the size and Orientation of discharge capacity of transfer tube 2 Rotating speed and direction of rotation；And " invariable power " regulative mode is used, the discharge capacity of transfer tube 2 is higher, and slow drive speed is faster；And system Operating pressure is bigger, and slow driving device output torque is bigger；Under certain rotating speed, the discharge capacity of transfer tube 2 and the product of operating pressure For the power of motor of transfer tube 2, so in the case where the power of motor of transfer tube 2 is certain, controller is returned by detecting enclosed What pressure sensor A14.1, pressure sensor B14.2, pressure sensor C14.3 and pressure sensor D14.4 in road fed back Signal, can reduce the output flow of transfer tube 2 according to actual condition, that is, reduce rotating speed of the grinding machine slowly under drive state, be used for into One step improves the driving force of slow driving device, so as to improve working range and the applicable ability that hydraulic pressure drives slowly；

" the electric proportion adjustment " 2. of hydraulic system closed circuit

The variable regulative mode of transfer tube 2 is electric proportional control, and its flow exported and direction are directly proportional to control signal, By inputing to the change of the size and Orientation of electric current on proportion electro-magnet and stroking mechanism 4, and in the work of the pressure oil of slippage pump 3 It can change the size and Orientation of the output flow of transfer tube 2 with lower, and then make the flow of transfer tube 2 is proportional to change, Make powered hydraulic motor A16.1, the speed of hydraulic motor B16.2 both directions and acceleration, deceleration can be smart Really control；

Specific work process is as follows：When controller to the proportion electro-magnet in the stroking mechanism of transfer tube 2 and stroking mechanism 4 just During signal, the electromagnet b in proportion electro-magnet and stroking mechanism 4 is powered, controls oil to promote variable piston to move right, transfer tube 2 A mouth pressure oil outputs, pressure oil is sent into hydraulic motor A16.1 A mouths by balanced valve A15.1 all the way, works as brake In when opening a sluice gate state, hydraulic motor A16.1 driving decelerators A18.1 rotates A17.1；Same another way through balanced valve B15.2, Pressure oil is sent into hydraulic motor B16.2 A mouths, when brake B17.1, which is in, opens a sluice gate state, hydraulic motor B16.2 drivings Decelerator B18.2 rotates.When clutch A31.1, clutch B31.2 " close " simultaneously, decelerator A18.1, decelerator B18.2 It is common to drive grinding machine to rotate forward；

The hydraulic oil flowed out from hydraulic motor A16.1 B mouths through balanced valve A15.1 and the B mouths from hydraulic motor B16.2 pass through The hydraulic oil of balanced valve B15.2 outflows returns to the B mouths of transfer tube 2 jointly；

When controller is to 4 negative signal of proportion electro-magnet and stroking mechanism in the stroking mechanism of transfer tube 2, proportion electro-magnet And the electromagnet a of stroking mechanism 4 is powered, oil is controlled to promote variable piston to be moved to the left, the B mouths output of transfer tube 2, so as to drive liquid Pressure motor A16.1, hydraulic motor B16.2 are inverted, and grinding machine also inverts therewith, and oil circuit is similar when being rotated forward with grinding machine, therefore repeats no more； The hydraulic oil now flowed out from hydraulic motor A16.1 A mouths through balanced valve A15.1 and the A mouths from hydraulic motor B16.2 are through balance The hydraulic oil of valve B15.2 outflows returns to the A mouths of transfer tube 2 jointly；

It should be further stated that:When clutch A31.1 " closing ", clutch B31.2 " disengagement ", grinding machine can only be by Decelerator A18.1 drives；Otherwise when clutch B31.2 " closing ", clutch A31.1 " disengagement ", grinding machine can only be by decelerator B18.1 drives；This function can be such that grinding machine by two slow driving devices while can drives, and can also be driven by any of which one is slow Device is operated alone, and facilitates two clutches " to tooth ", unbalance loading operating mode occurs in gear, this function is largely effective；

Big due to loading for large-sized mining grinding mill, rotary inertia is big, and hydraulic motor A16.1 is furnished with balanced valve in the system A15.1, no matter hydraulic motor A16.1 is in main story or reversion, and hydraulic motor A16.1 oil-feed and oil extraction can pass through balanced valve A15.1, hydraulic motor A16.1 I/O traffic can be balanced valve A15.1 and effectively carry out throttling control for brake, avoid When under Exceed load operating mode, hydraulic motor A16.1, because of the danger that fuel feeding is insufficient and damages, and grinding machine choosing turns also more may be used Lean on, while hydraulic motor A16.1 output shafts are provided with brake A17.1, brake A17.1 can be protected under operating mode under overload Hydraulic motor A16.1 is protected, and can meets the requirement to safety arrestment during grinding machine maintenance；

It is furnished with balanced valve B15.2 on hydraulic motor B16.2 inlet and outlet of fuel channel, hydraulic motor B16.2 output shafts are provided with making Dynamic device B17.2；Balanced valve B15.2 is identical with balanced valve A15.1, and brake B17.2 is identical with brake A17.1, therefore no longer superfluous State.

" the electro-hydraulic closed-loop control " 3. of hydraulic system closed circuit

Said from grinding process angle, when grinding machine is shut down it is small more than 4 when more than when, the material in grinding mill barrel may freeze Knot, now grinding machine should be at driving working condition slowly, and be in poised state as early as possible as far as possible；For this operating mode, this hydraulic pressure system System can possess an important control function by " electro-hydraulic closed-loop control " -- and " anti-material freezes "；Specifically：In grinding machine Before the load of inner barrel rushes down, the operating pressure of transfer tube 2 can rise always, if system pressure is got on certain angle Come higher, then material is uneven in mill, is judged as that material freezes；Now slow drive must rotate and reverse, and make grinding machine towards load Direction rotates guarantee, and the lateral load of grinding machine two is roughly equal is in poised state；

In hydraulic system closed circuit:Hydraulic motor A16.1 A mouths are equipped with pressure equipped with pressure sensor C14.3, B mouth Sensors A 14.1, hydraulic motor B16.2 A mouths are equipped with pressure sensor B14.2 equipped with pressure sensor D14.4, B mouth, in addition For detecting the photoelectric encoder of grinding mill barrel rotating speed.Controller is by detecting the feedback signals of these electric elements, effectively control The positive and negative and size of the input signal of proportion electro-magnet and stroking mechanism 4 in transfer tube 2 processed, make the side of the output flow of transfer tube 2 To being automatically adjusted with size, so that grinding machine automatically realizes main story, reversion, realize that the material freezed in mill loosens；Work as control Device detects the pressure sensor C14.3 being connected with hydraulic motor A16.1 A mouths and is connected with hydraulic motor A16.1 B mouths When pressure sensor A14.1 feedback signal is of substantially equal, and controller is detected and is connected with hydraulic motor B16.2 A mouths Pressure sensor D14.4 and the pressure sensor B14.2 being connected with hydraulic motor B16.2 B mouths the basic phase of feedback signal Deng when then grind interior material and basically reached poised state；

The closed circuit synthesis " electric proportion adjustment " of this hydraulic system, " invariable power regulation ", " electro-hydraulic closed-loop control " are realized The slow moment of torsion and automatic matching rotating speed for driving the slow driving device output in drift angle, hydraulic pressure that grinding machine rotates under operating mode, not only can be improved Automation, intelligent level and the security reliability that can undoubtedly greatly improve mill running of mill driving system；

4. the open circuit in a hydraulic system is used to control brake A17.1, the hydraulic motor on hydraulic motor A16.1 Brake B17.2 on B16.2, and clutch A31.1, clutch B31.2 engagement and disengagement；

In Double-hydraulic at a slow speed drive device, it be furnished with brake A17.1, hydraulic pressure horse on hydraulic motor A16.1 output shaft It is furnished with brake B17.2 on up to B16.2 output shaft；Controlling pump 19 can effectively control brake A17.1, brake B17.2, make Obtain grinding machine and be stably held in non-equilibrium site, so that operator is more safe when changing liner plate；And in brake A17.1 oil passage is furnished with pressure switch B30.2, and brake B17.2 oil passage is furnished with pressure switch A30.1, works as controller When detecting that pressure switch sends signal, illustrate to be opened brake by pressure oil, now allow hydraulic motor to rotate, if not having The signal that pressure switch is sent is detected, controller will not then rotate hydraulic motor, according to logical action relation shown in following table, Both brake A17.1 can be realized, brake B17.2 single movement and can realizes brake A17.1, brake B17.2 is acted simultaneously, so as to realize two drive device single action or linkage actions at a slow speed；

Two at a slow speed the clutch A31.1 of drive device, clutch B31.2 opening and closing movement also completed by open circuit, According to logical action relation shown in following table, clutch A31.1, clutch B31.2 single movement and can be both realized Realize clutch A31.1, clutch B31.2 linkage action；

Open circuit magnetic valve action logic table

The specific work process that data more than can be seen that is：When being intended to realize " brake 17.1 is opened a sluice gate ", electromagnet SV1, SV7, SV8 are powered, and remaining electromagnet is not charged, start the motor of controlling pump 19, controlling pump 19 directly from fuel tank oil suction, by Powered in electromagnet SV1, the P mouths of controlling pump 19 are not connected with the T mouths of electromagnetic relief valve 20, so that system sets up pressure； Electromagnet SV7 is powered, and Solenoid ball valve A21 P3 mouths are connected with Solenoid ball valve A21 P4 mouths so that the P mouths of controlling pump 19 are through electricity Magnetic ball valve A21 P3 mouths, Solenoid ball valve A21 P4 mouths are output to brake A17.1 oil inlet, so as to by brake A17.1 Open.Electromagnet SV8 is used for the oil return line of control brake 17.1, when its is powered, Solenoid ball valve B22 P3 mouths and electromagnetic ball Valve B22 P4 mouths are not communicated with, so as to keep brake A17.1 input pressure constant, so as to maintain opening for brake 17.1 Lock state；

When pressure switch 30.2 (PS1 in the logical action table of the immediate boiling loop) detection in brake A17.1 oil passage When to pressure and acting, controller can be signaled to, can now realize in logical action table " allows hydraulic motor 16.1 to revolve Turn " functional status.

Remaining logical action describes similar, therefore repeats no more.

The non-detailed portion of the utility model is prior art.

Claims (2)

1. a kind of hydraulic control system for the double drive devices at a slow speed of large-sized grinder, including fuel tank（1）, it is characterized in that：Also wrap Control loop is included, the control loop includes open circuit and closed circuit；

The closed circuit includes transfer tube（2）, slippage pump（3）, proportion electro-magnet and stroking mechanism（4）, safety valve A（5.1）、 Safety valve B（5.2）, repairing check valve A（6.1）, repairing check valve B（6.2）, repairing check valve C（6.3）, repairing check valve D （6.4）, repairing check valve E（6.5）, repairing check valve F（6.6）, auxiliary overflow valve（7）, outlet filter（8）, heat exchange valve （9）, heat exchange overflow valve（10）, cooler（11）, return filter（12）, oil absorption filter（13）, pressure sensor A （14.1）, pressure sensor B（14.2）, pressure sensor C（14.3）, pressure sensor D（14.4）, balanced valve A（15.1）, it is flat Weigh valve B（15.2）, hydraulic motor A（16.1）, hydraulic motor B（16.2）, brake A（17.1）, brake B（17.2）, slow down Device A（18.1）With decelerator B（18.2）, the proportion electro-magnet and stroking mechanism（4）T mouths, oil absorption filter（13）A Mouth, return filter（12）B mouths, hydraulic motor A（16.1）T mouths, hydraulic motor B（16.2）T mouths and auxiliary overflow valve （7）T mouths respectively and fuel tank（1）It is connected, the slippage pump（3）S mouths and oil absorption filter（13）B mouths be connected, institute State transfer tube（2）A mouths, safety valve A（5.1）P mouths, repairing check valve A（6.1）B mouths, heat exchange valve（9）A mouths, balance Valve A（15.1）A mouths and balanced valve B（15.2）A mouths be connected, the transfer tube（2）B mouths, safety valve B（5.2）P Mouth, repairing check valve B（6.2）B mouths, heat exchange valve（9）B mouths, balanced valve A（15.1）A1 mouths and balanced valve B（15.2）'s A1 mouths are connected, the slippage pump（3）P mouths and outlet filter（8）A mouths be connected, the outlet filter（8）B Mouth and proportion electro-magnet and stroking mechanism（4）P mouths, repairing check valve A（6.1）A mouths, repairing check valve B（6.2）A mouths, Repairing check valve C（6.3）A mouths, repairing check valve D（6.4）A mouths, repairing check valve E（6.5）A mouths, repairing check valve F （6.6）A mouths, safety valve A（5.1）T mouths, safety valve B（5.2）T mouths and auxiliary overflow valve（7）P mouths be connected, it is described Heat exchange valve（9）P mouths and heat exchange overflow valve（10）P mouths be connected, the heat exchange overflow valve（10）T mouths and cooler（11） A mouths be connected, the cooler（11）B mouths and return filter（12）A mouths be connected, the repairing check valve C （6.3）B mouths, hydraulic motor A（16.1）B mouths, pressure sensor A（14.1）Oil inlet and balanced valve A（15.1）B1 Mouth is connected, the repairing check valve D（6.4）B mouths, hydraulic motor B（16.2）B mouths, pressure sensor B（14.2）Enter Hydraulic fluid port and balanced valve B（15.2）B1 mouths be connected, the repairing check valve E（6.5）B mouths, hydraulic motor A（16.1）A Mouth, pressure sensor C（14.3）Oil inlet and balanced valve A（15.1）B mouths be connected, the repairing check valve F（6.6）'s B mouths, hydraulic motor B（16.2）A mouths, pressure sensor D（14.4）Oil inlet and balanced valve B（15.2）B mouths be connected；

The open circuit includes controlling pump（19）, electromagnetic relief valve（20）, Solenoid ball valve A（21）, Solenoid ball valve B（22）, electricity Magnetic ball valve C（23）, solenoid directional control valve A（24.1）, solenoid directional control valve B（24.2）, hydraulic control one-way valve A（25.1）, hydraulic control one-way valve B （25.2）, Double throttle check valve A（26.1）, Double throttle check valve B（26.2）, diffluence motor A（27.1）, diffluence motor B （27.2）, clutch driving hydraulic cylinder A（28.1）, clutch driving hydraulic cylinder B（28.2）, clutch driving hydraulic cylinder C （28.3）, clutch driving hydraulic cylinder D（28.4）, travel switch A（29.1）, travel switch B（29.2）, travel switch C （29.3）, travel switch D（29.4）, pressure switch A（30.1）, pressure switch B（30.2）, clutch A（31.1）With clutch B （31.2）；The controlling pump（19）S mouths, Solenoid ball valve C（23）T mouths, electromagnetic relief valve（20）T mouths, solenoid directional control valve A （24.1）T mouths, solenoid directional control valve B（24.2）T mouths, diffluence motor A（27.1）T mouths, diffluence motor B（27.2）T mouths Also respectively and fuel tank（1）It is connected, the controlling pump（19）P mouths, solenoid directional control valve A（24.1）P mouths, solenoid directional control valve B （24.2）P mouths, Solenoid ball valve C（23）P mouths, electromagnetic relief valve（20）P mouths, Solenoid ball valve A（21）P1 mouths and electromagnetism Ball valve A（21）P3 mouths be connected, the solenoid directional control valve A（24.1）A mouths and hydraulic control one-way valve A（25.1）A1 mouths be connected Connect, the solenoid directional control valve A（24.1）B mouths and hydraulic control one-way valve A（25.1）A mouths be connected, the solenoid directional control valve B （24.2）A mouths and hydraulic control one-way valve B（25.2）A1 mouths be connected, the solenoid directional control valve B（24.2）B mouths and hydraulic control list To valve B（25.2）A mouths be connected, the hydraulic control one-way valve A（25.1）B mouths and Double throttle check valve A（26.1）A mouth phases Even, the hydraulic control one-way valve A（25.1）B1 mouths and Double throttle check valve A（26.1）A1 mouths be connected, the hydraulic control one-way valve B （25.2）B mouths and Double throttle check valve B（26.2）A mouths be connected, the hydraulic control one-way valve B（25.2）B1 mouths and double unidirectional Choke valve B（26.2）A1 mouths be connected, the Double throttle check valve A（26.1）B mouths and diffluence motor A（27.1）P mouth phases Connection, Double throttle check valve A（26.1）B1 mouths and clutch driving hydraulic cylinder A（28.1）Rod chamber A mouths, clutch driving Hydraulic cylinder B（28.2）Rod chamber A mouths be connected, the diffluence motor A（27.1）P1 mouths and clutch driving hydraulic cylinder A （28.1）Rodless cavity B1 mouths be connected, diffluence motor A（27.1）P2 mouths and clutch driving hydraulic cylinder B（28.2）Without bar Chamber B2 mouths are connected, the Double throttle check valve B（26.2）B mouths and diffluence motor B（27.2）P mouths be connected, it is double unidirectional Choke valve B（26.2）B1 mouths and clutch driving hydraulic cylinder C（28.3）Rod chamber A mouths, clutch driving hydraulic cylinder D （28.4）Rod chamber A mouths be connected, the diffluence motor B（27.2）P1 mouths and clutch driving hydraulic cylinder C（28.3）'s Rodless cavity B1 mouths are connected, diffluence motor B（27.2）P2 mouths and clutch driving hydraulic cylinder D（28.4）Rodless cavity B2 mouth phases Connection, the Solenoid ball valve C（23）A mouths and Solenoid ball valve B（22）P1 mouths, Solenoid ball valve B（22）P3 mouths be connected, institute State Solenoid ball valve A（21）P2 mouths, Solenoid ball valve B（22）P2 mouths, pressure switch A（30.1）Oil inlet and brake B （17.2）Oil inlet be connected, the Solenoid ball valve A（21）P4 mouths, Solenoid ball valve B（22）P4 mouths, pressure switch B （30.2）Oil inlet and brake A（17.1）Oil inlet be connected, the travel switch A（29.1）With travel switch B （29.2）It is arranged on clutch A（31.1）The extreme position of left and right two on straight-line trajectory, the travel switch C（29.3） With travel switch D（29.4）It is arranged on clutch B（31.2）The extreme position of left and right two on straight-line trajectory.

2. the hydraulic control system according to claim 1 for the double drive devices at a slow speed of large-sized grinder, it is characterized in that：Institute State transfer tube（2）, controlling pump（19）Motor, proportion electro-magnet and stroking mechanism（4）Magnetic valve, pressure sensor A （14.1）, pressure sensor B（14.2）, pressure sensor C（14.3）, pressure sensor D（14.4）, electromagnetic relief valve（20）、 Solenoid ball valve A（21）, Solenoid ball valve B（22）, Solenoid ball valve C（23）, solenoid directional control valve A（24.1）, solenoid directional control valve B （24.2）, travel switch A（29.1）, travel switch B（29.2）, travel switch C（29.3）, travel switch D（29.4）, pressure Switch A（30.1）, pressure switch B（30.2）It is respectively connected to control together with for measuring the photoelectric encoder of grinding mill barrel rotating speed Device.