CN105819373B - A kind of new forklift hydraulic system - Google Patents
A kind of new forklift hydraulic system Download PDFInfo
- Publication number
- CN105819373B CN105819373B CN201610308405.0A CN201610308405A CN105819373B CN 105819373 B CN105819373 B CN 105819373B CN 201610308405 A CN201610308405 A CN 201610308405A CN 105819373 B CN105819373 B CN 105819373B
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- CN
- China
- Prior art keywords
- oil pump
- control valves
- direction control
- sebific duct
- banked direction
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
Abstract
The present invention provides a kind of new forklift hydraulic system, including gearbox, gear oil pump, fuel tank, brake pump, banked direction control valves and dump ram, the gear oil pump includes backgear oil pump and front gear oil pump, the entrance of the backgear oil pump is connected by the first sebific duct with the fuel tank, the first outlet of the backgear oil pump is connected with the entrance of the front gear oil pump, the second outlet of the backgear oil pump is connected by the second sebific duct with unidirectional flow stabilizing valve, two-way is divided into by the unidirectional flow stabilizing valve, connected all the way by the 3rd sebific duct with brake pump, another way is connected by the 4th sebific duct with the side inlet of banked direction control valves, the outlet of the front gear oil pump is connected by the 5th sebific duct with the front entrance of banked direction control valves, the banked direction control valves is connected by oil return pipe with the fuel tank.The present invention carries out oil circuit control using two gear oil pumps, can realize the stability of braking, the uninterrupted that and can needs according to various functions, reasonable distribution oil mass.
Description
Technical field
The present invention relates to fork truck technical field, and in particular to a kind of to be used for new forklift hydraulic system.
Background technology
The major function of fork truck is to fork goods, lifts goods, and by goods handling to destination, in fork truck, this is a series of
In motion, hydraulic oil is transmitted by hydraulic system, completes a whole set of work.
Hydraulic system mainly has gear oil pump, banked direction control valves, oil cylinder, high-pressure rubber pipe and low pressure hose, joint, unidirectional current stabilization
Valve, hydraulic oil container etc. form.Operation principle is：Motor-driven gear oil pump, when the engine runs, gear oil pump is driven,
Oil is suctioned out and is transported to brake pump by a pipeline part by gear oil pump from fuel tank, is controlled by brake pedal, will enter braking
The hydraulic oil of pump is sent in drive axle, realizes that fork truck is braked；A part is to being transported to banked direction control valves, the fluid one in banked direction control valves
Point it is conveyed to steering and realizes fork-truck steering, a part give raising, realizes the rising of door frame, and a part is given and dump ram, realization
Door frame tilts forward and back.Different parts arrange that, because fork truck inner space is limited, arrangement is to these parts inside fork truck respectively
It is more complicated.It is meanwhile poor using a moving gear oil pump driving oil circuit, the operational stability of vehicle.
The content of the invention
The present invention provides a kind of new forklift hydraulic system, and oil circuit control, effectively solution are carried out using two gear oil pumps
The certainly stability of fork truck braking.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of new forklift hydraulic system, including gearbox and the gear oil pump that is driven using the gearbox, it is described
Gear oil pump connects fuel tank, brake pump and banked direction control valves by pipe-line system respectively, and the banked direction control valves connects with dump ram, the tooth
Wheel oil pump includes the backgear oil pump and front gear oil pump being arranged on described two power taking mouths of gearbox, the backgear oil pump
Entrance connected by the first sebific duct with the fuel tank, the first outlet of the backgear oil pump and entering for the front gear oil pump
Mouth connection, the second outlet of the backgear oil pump are connected by the second sebific duct with unidirectional flow stabilizing valve, pass through the unidirectional flow stabilizing valve
It is divided into two-way, is connected all the way by the 3rd sebific duct with brake pump, another way is connected by the side inlet of the 4th sebific duct and banked direction control valves
Logical, the outlet of the front gear oil pump is connected by the 5th sebific duct with the front entrance of banked direction control valves, and the banked direction control valves passes through oil return
Pipe connects with the fuel tank.
Further, the front outlet of the banked direction control valves is connected by six-way joint with the dump ram of both sides.
Further, the six-way joint includes joint body and is arranged on two arranged in the joint body and up and down
Individual threeway, the entrance of the threeway front outlet with banked direction control valves respectively, two outlets of the threeway respectively with dump ram
Head connected with bottom, for driving the flexible of dump ram.
Preferably, the entrance of described two threeways is located at the homonymy of joint body.
From above technical scheme, the present invention carries out oil circuit control using two gear oil pumps, can stablize transmission liquid
Force feed, by a set of succinct oil circuit method for arranging, respectively by hydraulic oil convey and realize the braking of fork truck, steering, raising and
Inclined function, the stability of braking, the uninterrupted that and can needs according to various functions, reasonable distribution oil mass can be realized.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the schematic diagram of six-way joint in the present invention.
In figure：1st, gearbox, 2, gear oil pump, 21, backgear oil pump, 22, front gear oil pump, 3, fuel tank, 4, brake pump,
5th, banked direction control valves, 6, dump ram, the 71, first sebific duct, the 72, second sebific duct, the 73, the 3rd sebific duct, the 74, the 4th sebific duct, the 75, the 5th glue
Pipe, 76, unidirectional flow stabilizing valve, 77, oil return pipe, 8, six-way joint, 81, joint body, the 82, first elbow, the 83, second elbow.
Embodiment
A kind of preferred embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
As shown in figure 1, the forklift hydraulic system includes gearbox 1, gear oil pump 2, fuel tank 3, brake pump 4, banked direction control valves
5th, dump ram 6 and the pipe-line system for connecting said mechanism.
The gear oil pump 2 includes the front gear oil pump 22 and backgear oil pump being arranged on 1 two power taking mouths of gearbox
21, the forward and backward positive and negative rotation direction of gear oil pump, engine driving drives gearbox, and power is transmitted to forward and backward gear oil pump by gearbox
It is operated.The entrance of the backgear oil pump 21 is connected by the first sebific duct 71 with the fuel tank 3, and fuel tank passes through the first sebific duct
Hydraulic oil is suctioned out to backgear oil pump, the first outlet of backgear oil pump 21 and is connected with the entrance of the front gear oil pump 22,
The second outlet of backgear oil pump 21 is connected by the second sebific duct 72 with unidirectional flow stabilizing valve 76, by the unidirectional flow stabilizing valve by its point
Into two oil circuits, connected all the way by the 3rd sebific duct 73 with brake pump 4, the side that another way passes through the 4th sebific duct 74 and banked direction control valves 5
Face entrance connection, the outlet of the front gear oil pump 22 is connected by the 5th sebific duct 75 with the front entrance of banked direction control valves 5.It is described more
Road valve 5 carries out oil return by oil return pipe 77, is back in fuel tank 3, forms a closed loop.
Hydraulic oil towards brake pump 4 passes through the shunting of unidirectional flow stabilizing valve 76, in brake, steps on brake pedal, hydraulic oil
Can smoothly it be sent in the propons brakes of fork truck, fork truck brake system will be relatively more steady, will not form jitter phenomenon.
Behind hydraulic oil interflow in the banked direction control valves 5, the front outlet of banked direction control valves passes through six-way joint 8 and the inclination of both sides
Oil cylinder 6 connects, and the front outlet of banked direction control valves also connects with steering cylinder and lift oil tank.First sebific duct 71, the second sebific duct
72nd, the 3rd sebific duct 73, the 4th sebific duct 74, the 5th sebific duct 75, unidirectional flow stabilizing valve 76, oil return pipe 77 and common group of six-way joint 8
Into pipe-line system.
The six-way joint 8 includes joint body 81 and is arranged on two three arranged in the joint body and up and down
Logical, the front outlet with banked direction control valves, two of the threeway export the head with dump ram respectively to the entrance of the threeway respectively
Portion connects with bottom, and for driving the flexible of dump ram, the entrance of two of which threeway is located at the homonymy of joint body.
The dump ram 6 is symmetrically arranged on fork truck body, and bottom is fixed on vehicle frame, and front end passes through ear
Ring is connected with door frame, is double piston cylinder, and dump ram will realize the hypsokinesis action of leaning forward of door frame, and the two actions are required for from more
Road valve fuel feeding.When door frame needs to lean forward, hydraulic oil is connect by the oil suction of the first elbow 82 in six-way joint 8, fuel feeding to left and right
Head, then by left and right high-pressure rubber pipe, reach dump ram bottom, promote bottom piston, the piston rod of dump ram stretches out, realized
Lean forward；Similarly, when door frame needs hypsokinesis, by the oil suction of the second elbow 83 in six-way joint, fuel feeding reaches to be tilted hydraulic oil
Oil cylinder head, head piston is promoted, piston rod is retracted, and realizes hypsokinesis.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made, it all should fall into the protection domain of claims of the present invention determination.
Claims (4)
1. a kind of new forklift hydraulic system, including gearbox (1) and the gear oil pump driven using the gearbox, described
Gear oil pump (2) connects fuel tank (3), brake pump (4) and banked direction control valves (5) by pipe-line system respectively, and the banked direction control valves is with tilting oil
Cylinder (6) connects, it is characterised in that the gear oil pump (2) includes the rear tooth being arranged on described (1) two power taking mouth of gearbox
Wheel oil pump (21) and front gear oil pump (22), the entrance of the backgear oil pump (21) pass through the first sebific duct (71) and the fuel tank
(3) connect, the first outlet of the backgear oil pump (21) is connected with the entrance of the front gear oil pump (22), the backgear
The second outlet of oil pump (21) is connected by the second sebific duct (72) with unidirectional flow stabilizing valve (76), is divided into two by the unidirectional flow stabilizing valve
Road, connected all the way by the 3rd sebific duct (73) with brake pump (4), the side that another way passes through the 4th sebific duct (74) and banked direction control valves (5)
Face entrance connection, the outlet of the front gear oil pump (22) are connected by the 5th sebific duct (75) with the front entrance of banked direction control valves (5),
The banked direction control valves (5) is connected by oil return pipe (77) with the fuel tank (3).
2. forklift hydraulic system according to claim 1, it is characterised in that the front outlet of the banked direction control valves (5) passes through
Six-way joint (8) connects with the dump ram (6) of both sides.
3. forklift hydraulic system according to claim 2, it is characterised in that the six-way joint (8) includes joint body
(81) two threeways arranged in the joint body and up and down are arranged on and, the entrance of the threeway respectively with banked direction control valves (5)
Front outlet, two outlets of the threeway are connected with the head of dump ram (6) and bottom respectively, and oil is tilted for driving
Cylinder stretches.
4. the forklift hydraulic system stated according to claim 3, it is characterised in that the entrance of described two threeways is located at joint body
(81) homonymy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610308405.0A CN105819373B (en) | 2016-05-11 | 2016-05-11 | A kind of new forklift hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610308405.0A CN105819373B (en) | 2016-05-11 | 2016-05-11 | A kind of new forklift hydraulic system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105819373A CN105819373A (en) | 2016-08-03 |
| CN105819373B true CN105819373B (en) | 2018-01-19 |
Family
ID=56528580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610308405.0A Active CN105819373B (en) | 2016-05-11 | 2016-05-11 | A kind of new forklift hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105819373B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87210070U (en) * | 1987-07-11 | 1988-10-26 | 浙江省丽水地区计算机应用研究所 | Tandem metering pump unit |
| JP5214644B2 (en) * | 2010-02-09 | 2013-06-19 | ジヤトコ株式会社 | Air vent structure of oil pump for automatic transmission |
| CN103047131B (en) * | 2013-01-25 | 2015-09-02 | 江铃汽车股份有限公司 | One is braked, is turned to duplex pump |
| CN105036009A (en) * | 2015-09-21 | 2015-11-11 | 安庆联动属具股份有限公司 | Tipping rack with improved oil way structure |
| CN205204771U (en) * | 2015-12-11 | 2016-05-04 | 安徽好运机械有限公司 | Fork truck is with integral slope steel pipe assembly |
| CN205603166U (en) * | 2016-05-11 | 2016-09-28 | 安徽好运机械有限公司 | Novel fork truck hydraulic system |
-
2016
- 2016-05-11 CN CN201610308405.0A patent/CN105819373B/en active Active
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| Publication number | Publication date |
|---|---|
| CN105819373A (en) | 2016-08-03 |
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