CN202968031U - Hydraulic control system used for industrial vehicle lifting device - Google Patents

Hydraulic control system used for industrial vehicle lifting device Download PDF

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Publication number
CN202968031U
CN202968031U CN 201220618187 CN201220618187U CN202968031U CN 202968031 U CN202968031 U CN 202968031U CN 201220618187 CN201220618187 CN 201220618187 CN 201220618187 U CN201220618187 U CN 201220618187U CN 202968031 U CN202968031 U CN 202968031U
Authority
CN
China
Prior art keywords
valve
hydraulic
solenoid directional
directional control
control system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220618187
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Chinese (zh)
Inventor
周敏龙
施林强
章建东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Noblelift Intelligent Equipment Co Ltd
Original Assignee
Zhejiang Nuoli Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Nuoli Machinery Co Ltd filed Critical Zhejiang Nuoli Machinery Co Ltd
Priority to CN 201220618187 priority Critical patent/CN202968031U/en
Application granted granted Critical
Publication of CN202968031U publication Critical patent/CN202968031U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a hydraulic control system used for an industrial vehicle lifting device. The hydraulic control system comprises an oil tank, a hydraulic oil pump, a motor, an overflow valve, a check valve, a hydraulic cylinder and an electromagnetic unloading valve, wherein the overflow valve is communicated with an outlet of the hydraulic oil pump; an electromagnetic directional valve is arranged between the check valve and the hydraulic cylinder, an oil inlet of the electromagnetic directional valve is communicated with an oil outlet of the check valve, and a working oil port of the electromagnetic directional valve is communicated with the hydraulic cylinder; one-way flowing of hydraulic oil from the oil inlet of the electromagnetic directional valve to the working oil port of the electromagnetic directional valve exists in one working position of the electromagnetic directional valve; and the electromagnetic unloading valve is connected with the electromagnetic directional valve in parallel, and an oil inlet of the electromagnetic unloading valve is communicated with the oil outlet of the check valve. By using the hydraulic control system disclosed by the utility model, the service life of the hydraulic pump and the motor can be prolonged, energy consumption is reduced, the efficiency is increased, the safety of the whole system is good, and the positioning of the hydraulic cylinder is precise.

Description

The hydraulic control system that is used for the industrial vehicle bont
Technical field
The utility model relates to the industrial vehicle technical field, relates in particular a kind of hydraulic control system for the industrial vehicle bont.
Background technology
Industrial vehicle, such as fork truck, transport trolley etc. all needs in work the raising up of the goods flexibility of needs carryings, and then transports.
therefore, industrial vehicle all is provided with bont, publication number CN201560102U for example, the Chinese utility model patent that open day is on August 25th, 2010 discloses a kind of car fork bont and electri forklift, it utilizes reductor, leading screw, servomotor and chain etc., realize enhancing action, such bont, driving screw mandrel by servomotor controls, its structure is very complicated, with high costs, competitive power is low, be not suitable for large-scale promotion and application, so, people begin to adopt the fluid pressure type bont, traditional pressure type bont comprises Hydraulic Pump, hydraulic ram, check valve, by pass valve etc., it is simple in structure, highly versatile, but, it also has weak point: be subject to cost, what it adopted is all fix-displacement pump, general is all gear type pump, come the control system operation pressure with by pass valve, therefore, each lifting of bont, it is all rigidity, that is to say, Hydraulic Pump, motor is operated at full capacity from starting from eventually, the load that promotes is heavier, demanded power output to motor is also higher, like this, motor is under the full load state to be started, in the course of time, can affect motor, the performance and used life of Hydraulic Pump, secondly, aspect energy consumption, motor is in the situation that full load starts, and load is heavier, and the time of electric motor starting is also longer, and the electric energy of consumption is also more, and the immediate current when electric motor starting is larger simultaneously, and larger to the impact of motor, danger is larger, again, after motor stops at every turn, under the effect of inertia, the capital is in the rotation regular hour, this rotation meeting is squeezed into unnecessary hydraulic oil and is entered in hydraulic ram by gear type pump, after this stops with regard to the position of causing hydraulic ram to rise to needs at every turn, an impact that makes progress can be arranged all, make its upward movement one segment distance again, cause the location inaccuracy.
The utility model content
The purpose of this utility model is for the deficiencies in the prior art part, is provided for the hydraulic control system of industrial vehicle bont, and it can improve the service life of Hydraulic Pump and motor, reduce energy consumption, safety is good, and for the registration of hydraulic ram, whole system efficient is high.
In order to solve the problems of the technologies described above, the technical solution of the utility model is as follows: be used for the hydraulic control system of industrial vehicle bont, comprise the electrical motor of fuel tank, hydraulic oil pump, the described hydraulic oil pump work of drive, by pass valve, check valve and the hydraulic ram that is communicated with described hydraulic oil pump outlet; Be provided with solenoid directional control valve between described check valve and described hydraulic ram, the oil inlet of described solenoid directional control valve and the oil outlet of described check valve are communicated with, and the actuator port of described solenoid directional control valve and described hydraulic ram are communicated with; The actuator port one-way flow that a control position is arranged in described solenoid directional control valve control position is hydraulic oil from the oil inlet of described solenoid directional control valve to described solenoid directional control valve, also comprise one and the unloading electromagnetic valve of described solenoid directional control valve parallel connection, the oil inlet of described unloading electromagnetic valve and the oil outlet of described check valve are communicated with, and the actuator port of described unloading electromagnetic valve and described fuel tank are communicated with.
hydraulic control system of the present utility model, solenoid directional control valve can be the 2/2-way change-over valve, it can be the 3-position 4-way solenoid directional control valve, can be two four-way electromagnetic reversing valves, all be fine, but no, no matter be several position switching valves, it always has a control position, in this control position, hydraulic oil can only be from the oil inlet of described solenoid directional control valve to described solenoid directional control valve the actuator port one-way flow, in the time of motor start-up, open unloading electromagnetic valve a period of time that (time can be regulated according to the performance of system, scope: 0.5~2S), this time, whole hydraulic efficiency pressure system was in unloading condition, there is no load, required motor power (output) is very little, realize soft start function, after arriving when electrical motors the rotating speed that needs, close unloading electromagnetic valve.
When electrical motor stops, open simultaneously unloading electromagnetic valve a period of time that (time can be regulated according to the performance of system, scope: 0.5~2S), can realize that the part oil pressure is back to fuel tank through unloading electromagnetic valve, thereby effectively reduce the oil pressure that the inertia when stopping due to electrical motor produces, avoid hydraulic ram to produce and impact, keep the accuracy of hydraulic ram position.
The decline process is come the co-controlling flow by opening solenoid directional control valve and unloading electromagnetic valve (bivalve master mode), has realized the steady whereabouts of hydraulic ram.
As preferably, described solenoid directional control valve is the 2/2-way solenoid directional control valve.
Can either realize controlling function, price is cheap again, and structure is ripe, reliable, failure rate is low.
As preferably, described unloading electromagnetic valve is the 2/2-way solenoid directional control valve.
Utilize the 2/2-way solenoid directional control valve as unloader valve, low price, structure maturation, reliable, failure rate is low.
As preferably, described hydraulic control system also comprises electronic program controller, and described electronic program controller is controlled the switch of described electrical motor, solenoid directional control valve and unloading electromagnetic valve by receiving the control signal of being sent by the operator.
As preferably, the inside of described electronic program controller is provided be used to the time controller of controlling described unloading electromagnetic valve time-delay.
As preferably, the pump inlet of described hydraulic oil pump is provided with filter.
Assurance enters the cleaning of the hydraulic oil of hydraulic oil pump.
As preferably, described hydraulic oil pump is gear type pump.
As preferably, described gear type pump is quantitative gear pump.
Adopt fix-displacement pump, it is simple in structure, and is cheap, is suitably for system most.
The utility model beneficial effect is:
Hydraulic control system of the present utility model reduces energy consumption the service life that can improve Hydraulic Pump and motor, raises the efficiency, and the whole system safety is good, for the registration of hydraulic ram.
Description of drawings
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the structural representation of the utility model one embodiment, and in figure, unloading electromagnetic valve is the 2/2-way change-over valve.
In figure:
The 1-fuel tank;
The 2-hydraulic oil pump;
The 3-electrical motor;
The 4-by pass valve;
The 5-check valve;
The 6-hydraulic ram;
The 7-solenoid directional control valve;
The 8-unloading electromagnetic valve;
The 9-filter.
The specific embodiment
The following stated is only preferred embodiment of the present utility model, is not that scope of the present utility model is limited.
embodiment, see accompanying drawing 1, the hydraulic control system that is used for the industrial vehicle bont, comprise fuel tank 1, hydraulic oil pump 2, hydraulic oil pump are gear type pump, present embodiment is quantitative gear pump, drive the electrical motor 3 of hydraulic oil pump 2 work, with the by pass valve 4 that hydraulic oil pump 2 outlets are communicated with, check valve 5 and hydraulic ram 6, the pump inlet of hydraulic oil pump 2 is provided with filter 9, the hydraulic oil of coming from fuel tank 1 enters gear type pump after filtering through filter 9, the precision of filter 9 is selected as required, be difficult for too high, the pump discharge of hydraulic oil pump 2 hydraulic oil out is divided into two-way, one the tunnel is connected connection with check valve, connection is connected on another road with by pass valve, come control system pressure by by pass valve 4, check valve 5 can be selected the tubular type check valve, also can adopt plate-type non-return valve, the outlet of check valve 5 and hydraulic ram 6 are communicated with, for hydraulic ram 6 is controlled, be provided with solenoid directional control valve 7 between check valve 5 and hydraulic ram 6, the oil outlet of the oil inlet P of solenoid directional control valve 7 and check valve 5 is communicated with, the actuator port A of solenoid directional control valve 7 and hydraulic ram 6 are communicated with, the actuator port A one-way flow that a control position is arranged in solenoid directional control valve 7 control positioies is hydraulic oil from the oil inlet P of solenoid directional control valve 7 to solenoid directional control valve 7, also comprise one and the unloading electromagnetic valve 8 of solenoid directional control valve 7 parallel connections, the oil outlet of the oil inlet of unloading electromagnetic valve 8 and check valve 5 is communicated with, the actuator port of unloading electromagnetic valve 8 and fuel tank 1 are communicated with, in the present embodiment, unloading electromagnetic valve 8 is the 2/2-way solenoid directional control valve.
In addition, hydraulic control system also comprises electronic program controller 10, electronic program controller 10 is controlled the switch of electrical motor 3, solenoid directional control valve 7 and unloading electromagnetic valve 8 by receiving the control signal of being sent by the operator, the inside of electronic program controller 10 is provided with for the time controller of controlling unloading electromagnetic valve 8 time-delays, by high time controller, control the time of unloading electromagnetic valve 8 time-delays, be 0.5s, or 1s etc. determine as required.
Above explanation is only to explanation of the present utility model, make the complete enforcement this programme of those of ordinary skills' energy, but be not to restriction of the present utility model, those skilled in the art can make to the present embodiment the modification that there is no creative contribution as required after reading this specification sheets, these are all not creative modifications.But as long as all be subject to the protection of patent law in claim scope of the present utility model.

Claims (8)

1. the hydraulic control system that is used for the industrial vehicle bont, comprise fuel tank (1), hydraulic oil pump (2), drive described hydraulic oil pump (2) work electrical motor (3), export with described hydraulic oil pump (2) by pass valve (4), check valve (5) and the hydraulic ram (6) that is communicated with; It is characterized in that: be provided with solenoid directional control valve (7) between described check valve (5) and described hydraulic ram (6), the oil inlet (P) of described solenoid directional control valve (7) and the oil outlet of described check valve (5) are communicated with, and the actuator port (A) of described solenoid directional control valve (7) and described hydraulic ram (6) are communicated with; Actuator port (A) one-way flow that a control position is arranged in described solenoid directional control valve (7) control position is hydraulic oil from the oil inlet (P) of described solenoid directional control valve (7) to described solenoid directional control valve (7), also comprise one and described solenoid directional control valve (7) unloading electromagnetic valve (8) in parallel, the oil outlet of the oil inlet of described unloading electromagnetic valve (8) and described check valve (5) is communicated with, and the actuator port of described unloading electromagnetic valve (8) and described fuel tank (1) are communicated with.
2. the hydraulic control system for the industrial vehicle bont according to claim 1, it is characterized in that: described solenoid directional control valve (7) is the 2/2-way solenoid directional control valve.
3. the hydraulic control system for the industrial vehicle bont according to claim 1, it is characterized in that: described unloading electromagnetic valve (8) is the 2/2-way solenoid directional control valve.
4. according to claim 1 and 2 or 3 described hydraulic control systems for the industrial vehicle bont, it is characterized in that: described hydraulic control system also comprises electronic program controller (10), and described electronic program controller (10) is controlled the switch of described electrical motor (3), solenoid directional control valve (7) and unloading electromagnetic valve (8) by receiving the control signal of being sent by the operator.
5. electronic program controller spare according to claim 4 is characterized in that: the inside of described electronic program controller (10) is provided be used to the time controller of controlling described unloading electromagnetic valve (8) time-delay.
6. the hydraulic control system for the industrial vehicle bont according to claim 4, it is characterized in that: the pump inlet of described hydraulic oil pump (2) is provided with filter (9).
7. the hydraulic control system for the industrial vehicle bont according to claim 4, is characterized in that, described hydraulic oil pump (2) is gear type pump.
8. the hydraulic control system for the industrial vehicle bont according to claim 7, it is characterized by: described gear type pump is quantitative gear pump.
CN 201220618187 2012-11-21 2012-11-21 Hydraulic control system used for industrial vehicle lifting device Expired - Fee Related CN202968031U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220618187 CN202968031U (en) 2012-11-21 2012-11-21 Hydraulic control system used for industrial vehicle lifting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220618187 CN202968031U (en) 2012-11-21 2012-11-21 Hydraulic control system used for industrial vehicle lifting device

Publications (1)

Publication Number Publication Date
CN202968031U true CN202968031U (en) 2013-06-05

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103708391A (en) * 2013-12-17 2014-04-09 天津大学 Feed system of large-displacement lifting device for large-scale structures
CN103754798A (en) * 2014-02-19 2014-04-30 上海梯佑叉车有限公司 Semi-electric self-lifting loading and unloading car
CN108408677A (en) * 2018-01-30 2018-08-17 中国航发航空科技股份有限公司 A kind of hydraulic intensifier being exclusively used in the oiling supercharging of equipment oil cylinder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103708391A (en) * 2013-12-17 2014-04-09 天津大学 Feed system of large-displacement lifting device for large-scale structures
CN103708391B (en) * 2013-12-17 2016-01-27 天津大学 Large structure Large travel range jacking system feed system
CN103754798A (en) * 2014-02-19 2014-04-30 上海梯佑叉车有限公司 Semi-electric self-lifting loading and unloading car
CN108408677A (en) * 2018-01-30 2018-08-17 中国航发航空科技股份有限公司 A kind of hydraulic intensifier being exclusively used in the oiling supercharging of equipment oil cylinder

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Legal Events

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP03 Change of name, title or address

Address after: 313100 Changxing County, Huzhou, Taihu street, long State Road, No. 528, No.

Patentee after: Connaught machinery Limited by Share Ltd

Address before: 313100 Changxing County Economic Development Zone, Zhejiang, Huzhou, No. 1 road, No. 58

Patentee before: Zhejiang Nuoli Machinery Co., Ltd.

CP01 Change in the name or title of a patent holder

Address after: 313100 No. 528 Changzhou Road, Changxing County Taihu street, Huzhou, Zhejiang.

Patentee after: Nuo intelligent equipment Limited by Share Ltd

Address before: 313100 No. 528 Changzhou Road, Changxing County Taihu street, Huzhou, Zhejiang.

Patentee before: Connaught machinery Limited by Share Ltd

CP01 Change in the name or title of a patent holder
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130605

Termination date: 20201121

CF01 Termination of patent right due to non-payment of annual fee