CN207361716U - A kind of hydraulic forklift hoisting apparatus - Google Patents

A kind of hydraulic forklift hoisting apparatus Download PDF

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Publication number
CN207361716U
CN207361716U CN201721084179.9U CN201721084179U CN207361716U CN 207361716 U CN207361716 U CN 207361716U CN 201721084179 U CN201721084179 U CN 201721084179U CN 207361716 U CN207361716 U CN 207361716U
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CN
China
Prior art keywords
oil
gear pump
lifting
hydraulic
valve
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Application number
CN201721084179.9U
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Chinese (zh)
Inventor
王蓉
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.)
Hengyang Datang Hydraulic Electromechanical Co., Ltd.
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Chengdu Handao Technology Co Ltd
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Priority to CN201721084179.9U priority Critical patent/CN207361716U/en
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Abstract

The problems such as the utility model discloses a kind of hydraulic forklift hoisting apparatus, mainly solves driving energy force difference existing in the prior art, and lifting weight is small, no lifting process protection.The device includes the oil groove of built-in hydraulic oil, the gear pump that import is arranged in oil groove, is suppressed for hydraulic oil, it is arranged on the non-return valve of gear pump outlet, import is connected with non-return valve, exports the three position four-way directional control valve for being connected with oil groove and being driven using 4 20mA, the oil cylinder being connected with reversal valve, and be connected respectively with three position four-way directional control valve and gear pump, the controller for crane lifting and travelling control.Through the above scheme, the utility model has the advantages that driving force is strong, operation is quick, lifting is steady, lifting process protection is complete, has very high practical value and promotional value in lifting equipment field.

Description

A kind of hydraulic forklift hoisting apparatus
Technical field
Lifting equipment field is the utility model is related to, especially a kind of hydraulic forklift hoisting apparatus.
Background technology
Fork truck is industrial transportation vehicle, refers to load and unload member pallet cargo, stacking and short distance hauling operation Various wheeled carrying vehicles.Fork truck includes bodywork system, drive system, electrical source of power, pallet fork, door type frame, hoisting mechanism etc.. During use, pallet fork is used to support object, promotes fork truck to can be achieved to carry, its structure is relatively simple, carries laborsaving, efficiency It is improved significantly, is widely used in the places such as station, harbour, airport, factory, warehouse.At present, most fork truck uses Motor drive chain, thus drives pallet fork raising, it is disadvantageous in that, driving energy force difference, lifting weight is small, no lifting process Protection.
Utility model content
The purpose of this utility model is to provide a kind of hydraulic forklift hoisting apparatus, mainly solve existing in the prior art The problems such as driving energy force difference, lifting weight is small, no lifting process protection.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of hydraulic forklift hoisting apparatus, includes the oil groove of built-in hydraulic oil, and import is arranged in oil groove, for hydraulic oil The gear pump suppressed, is arranged on the non-return valve of gear pump outlet, and import is connected with non-return valve, exports three four be connected with oil groove Logical reversal valve, the oil cylinder being connected with reversal valve, and be connected respectively with three position four-way directional control valve and gear pump, for crane lifting With the controller of travelling control.
Specifically, controller includes the first A/D converter of three position four-way directional control valve connection, connects with the first A/D converter The dsp processor connect, the limit sensors being connected respectively with dsp processor, pressure sensor, current limiter, storage battery, first drive Dynamic circuit, the second drive circuit and the second A/D converter.The movable motor of first drive circuit and fork truck connects, for providing Travelling control.Storage battery is connected to provide lifting, needed for walking process respectively to movable motor, dsp processor and gear pump Power supply.The control connection of second drive circuit and gear pump, passes through the start and stop of the second driver control gear pump.2nd A/D Converter is connected with operating handle.
Further, one piece of strainer for being used to filter oil return is vertically arranged in oil groove, an oiling is set at the top of the oil groove The spiracle of exhaust.
Further, oil cylinder includes the upper oil gun F being connected respectively with three position four-way directional control valve and lower oil gun E.
Preferably, three position four-way directional control valve is driven using 4-20mA.
Further, limit sensors are installed on door type frame, and pressure sensing is arranged on pallet fork bottom.
Compared with prior art, the utility model has the advantages that:
(1) the utility model takes full advantage of the characteristics of hydraulic oil compression is small, and lifting pallet fork is suppressed by gear pump Mode realize Articles transfer, its lifted driving force be obviously improved compared with chain mode, its driving force is stronger, required lifting Power consumption is relatively low.Moreover, oil circuit flow direction switching is carried out by using the current control three position four-way directional control valve of 4-20mA, its Control accuracy is higher.It in Articles transfer, placement, can preferably position, avoid lifting process operation shake from causing object to damage, Especially it is reflected more clearly when carrying fragile article.
(2) on the other hand, strainer is set in oil groove, filters hydraulic oil oil return, can effectively avoid the problem of oil circuit blocks, Make fork truck lifting process more steady.The spiracle for setting an oiling to be vented at the top of oil groove, convenient detection oil, is the later stage Addition or replacement hydraulic oil provide safeguard.The utility model has the advantages that driving force is strong, operation is quick, raising is steady, There is very high practical value and promotional value in lifting equipment field.
(3) moreover, the utility model is reasonably configured with limit sensors, pressure sensor and current limiter, is rising During drop, weighing items can be detected, prevent overweight use, damage fork truck component.Not only detected by pressure sensor actual Weight, also set up the electric current of current limiter detection lifting, double check lifting weight, there is provided a kind of reliable lifting process is protected Shield.Moreover, the utility model is ingenious on door type frame is provided with limit sensors, and super cylinder journey can be avoided to run with oil cylinder, Oil cylinder damage is reduced, extends oil cylinder service life.
Brief description of the drawings
Fig. 1 is the hydraulic circuit figure of the utility model.
Fig. 2 is the controller principle figure of the utility model.
In above-mentioned attached drawing, the corresponding component names of reference numeral are as follows:
1- oil grooves, 2- gear pumps, 3- oil cylinders, 4- non-return valves, 5- three position four-way directional control valves, 6- strainers, 7- spiracles, 8- controls Device processed.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples, and the embodiment of the utility model includes But it is not limited to the following example.
Embodiment
As shown in Figure 1 to Figure 2, a kind of hydraulic forklift hoisting apparatus, includes the oil groove 1 of built-in hydraulic oil, import is arranged on In oil groove 1, the gear pump 2 suppressed for hydraulic oil, be arranged on the non-return valve 4 of gear pump outlet, import is connected with non-return valve 4, Export and be connected with oil groove 1 and using the three position four-way directional control valve 5 of 4-20mA drivings, the oil cylinder 3, Yi Jifen being connected with reversal valve 5 It is not connected with three position four-way directional control valve 5 and gear pump 2, the controller 8 for crane lifting and travelling control.
The controller 8 includes the first A/D converter that three position four-way directional control valve 5 connects, and is connected with the first A/D converter Dsp processor, the limit sensors being connected respectively with dsp processor, pressure sensor, current limiter, storage battery, the first driving electricity Road, the second drive circuit and the second A/D converter;The movable motor connection of first drive circuit and fork truck;The electric power storage Pond is connected to movable motor, dsp processor and gear pump 2 respectively.Second drive circuit is connected with the control of gear pump 2, and second A/D converter is connected with operating handle.
Oil circuit blocks in order to prevent, and one piece of strainer 6 for being used to filter oil return, oil groove top are vertically arranged in oil groove 1 The spiracle 7 for setting an oiling to be vented.
The oil cylinder 3 includes the upper oil gun F being connected respectively with three position four-way directional control valve 5 and lower oil gun E.
Limit sensors are installed on door type frame, and pressure sensing is arranged on pallet fork bottom.
The lifting process of oil cylinder 3 is briefly described below:
First, pressure sensor detection weighing items are overweight to carry out descending operation by operating handle, controller Dsp processor drives the spool of three position four-way directional control valve 5 to be moved to the left by the first A/D converter, three position four-way directional control valve 5 A is connected with P, B with T.
Secondly, 2 progress hydraulic oil of starter receiver pump is suppressed, and hydraulic oil is successively by gear pump 2, non-return valve 4,3-position 4-way The B and T of reversal valve 5, into the lower oil gun E of oil cylinder 3.
Then, the oil return of upper oil gun F enters 1 bottom of oil groove by the P and A of three position four-way directional control valve 5.Lifting terminates, tooth Wheel pump 2 is out of service, and oil circuit is blocked in 5 runback of three position four-way directional control valve.
Finally, when oil cylinder 3 declines, the spool of three position four-way directional control valve 5 moves right, at this time, three position four-way directional control valve 5 A is connected with T, B with P.The hydraulic oil that gear pump 2 is suppressed is successively by non-return valve 4, the B and P of three position four-way directional control valve 5, into oil The upper oil gun F of cylinder 3.T and A of the hydraulic oil oil return of oil cylinder 3 through three position four-way directional control valve 5, into the bottom of oil groove 1, complete oil Cylinder 3.
Hydraulic forklift detects object actual weight in lifting, by pressure sensor, if using weight more than fork truck, Operating handle will be unable to carry out lift operations.Moreover, when lifting starts, there are an inertial acceleration, pressure sensor and The weight of current limiter detection is slightly larger than actual weight, ensures lifting weight in allowed band by double check, there is provided a kind of Safe and reliable lifting control.The controller realizes that pallet fork is accurately fixed by the current control three position four-way directional control valve of 4-20mA Position, the fork truck of more existing chain lifting are more stable.It can be said that compared with prior art, have that driving force is strong, control is flat Surely, the advantages that lifting process protection is complete, possesses the characteristics of substance and progress, has very high practicality in lifting equipment field Value and promotional value.
Above-described embodiment is only the preferred embodiment of the utility model, is not intended to limit the scope of the present invention, In every case using the design principle of the utility model, and the change for carrying out non-creative work on this basis and making, should all Belong within the scope of protection of the utility model.

Claims (6)

1. a kind of hydraulic forklift hoisting apparatus, it is characterised in that the oil groove (1) including built-in hydraulic oil, import is arranged on oil groove (1) gear pump (2) that is interior, being suppressed for hydraulic oil, is arranged on the non-return valve (4) of gear pump outlet, and import connects with non-return valve (4) Connect, export the three position four-way directional control valve (5) being connected with oil groove (1), the oil cylinder (3) being connected with reversal valve (5), and respectively with three Position and four-way reversing valve (5) and gear pump (2) connection, the controller (8) for crane lifting and travelling control.
2. a kind of hydraulic forklift hoisting apparatus according to claim 1, it is characterised in that the controller (8) includes three Position and four-way reversing valve (5) connection the first A/D converter, the dsp processor being connected with the first A/D converter, respectively with DSP Manage limit sensors, pressure sensor, current limiter, storage battery, the first drive circuit, the second drive circuit and second of device connection A/D converter;The movable motor connection of first drive circuit and fork truck;The storage battery is respectively at movable motor, DSP Manage device and gear pump (2) connection;Second drive circuit is connected with the control of gear pump (2);Second A/D converter with Operating handle connects.
3. a kind of hydraulic forklift hoisting apparatus according to claim 1, it is characterised in that vertically set in the oil groove (1) One piece of strainer (6) for being used to filter oil return is put, the spiracle (7) that an oiling is vented is set at the top of the oil groove.
4. a kind of hydraulic forklift hoisting apparatus according to claim 1, it is characterised in that the oil cylinder (3) includes difference The upper oil gun F and lower oil gun E being connected with three position four-way directional control valve (5).
A kind of 5. hydraulic forklift hoisting apparatus according to claim 1, it is characterised in that the three position four-way directional control valve (5) driven using 4-20mA.
6. a kind of hydraulic forklift hoisting apparatus according to claim 2, it is characterised in that the limit sensors are installed on On door type frame;The pressure sensing is arranged on pallet fork bottom.
CN201721084179.9U 2017-08-28 2017-08-28 A kind of hydraulic forklift hoisting apparatus Active CN207361716U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721084179.9U CN207361716U (en) 2017-08-28 2017-08-28 A kind of hydraulic forklift hoisting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721084179.9U CN207361716U (en) 2017-08-28 2017-08-28 A kind of hydraulic forklift hoisting apparatus

Publications (1)

Publication Number Publication Date
CN207361716U true CN207361716U (en) 2018-05-15

Family

ID=62350780

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721084179.9U Active CN207361716U (en) 2017-08-28 2017-08-28 A kind of hydraulic forklift hoisting apparatus

Country Status (1)

Country Link
CN (1) CN207361716U (en)

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Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20190411

Address after: 421000 Oushuiling 55, Yanfeng District, Hengyang City, Hunan Province

Patentee after: Hengyang Datang Hydraulic Electromechanical Co., Ltd.

Address before: 610000 Sichuan Chengdu high tech Zone No. 8, Jitai three road 1, 1 Units 20, 2.

Patentee before: CHENGDU HANDAO TECHNOLOGY CO., LTD.