CN105819374B - Tray carriage hydraulic device - Google Patents
Tray carriage hydraulic device Download PDFInfo
- Publication number
- CN105819374B CN105819374B CN201610399857.4A CN201610399857A CN105819374B CN 105819374 B CN105819374 B CN 105819374B CN 201610399857 A CN201610399857 A CN 201610399857A CN 105819374 B CN105819374 B CN 105819374B
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- CN
- China
- Prior art keywords
- cavity
- hydraulic device
- striker
- valve
- tray carriage
- Prior art date
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Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Handcart (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
Tray carriage hydraulic device of the present invention includes shell block, horizontal lever, upright lever, screw, striker, by cone valve, valve block, second operating valve of the first spring composition, second spring, steel ball, shell block includes the first cavity of connection, second cavity and third cavity, steel ball and the second cavity form the first operating valve, horizontal lever supports screw when rotating mobile, screw drives upright lever to swing, upright lever drives striker to be connected to the first cavity with the second cavity in the movement of the first cavity, cone valve is mobile to close third cavity to the second cavity under the action of the first spring, when plunger pump makees oil suction stroke, generate negative pressure, oil liquid is out of oil sump sucking plunger pump, when plunger pump makees oil extraction stroke, steel ball acts in liquid stream and closes the first operating valve to disconnect the first cavity and the second cavity, simultaneously, liquid stream pushes cone valve to open Second is connected to the second cavity with third cavity as valve, and oil liquid enters operating cylinder.
Description
[technical field]
The present invention relates to a kind of tray carriage hydraulic devices.
[background technique]
Manual pallet trucks is a kind of a kind of tool car for being suitable for short-haul operation cargo, be widely used in logistics,
The places such as storage, market, factory, the operating condition of lift oil tank is such as in hydraulic pressure unit therein: raising, decline, holding are both needed to people
Work operation is just able to achieve its each function, when carrying special cargo, cannot then meet the requirements when especially carrying dangerous material, it is not
It is able to maintain always in low level armed state.
In consideration of it, it is necessory to provide a kind of improved tray carriage hydraulic device, to overcome defect existing for prior art.
[summary of the invention]
The purpose of the invention is to provide a kind of tray carriage hydraulic device that can decline automatically.
In order to solve the above technical problem, the present invention provides following technical solutions: a kind of tray carriage hydraulic device, including work
Make oil cylinder, plunger pump, oil sump and shell block, it is characterised in that: the tray carriage hydraulic device further includes the water being assembled on shell block
Flat lever, upright lever and the screw being assembled on upright lever, the striker abutted with upright lever, by cone valve, valve block,
Second operating valve of the first spring composition, the second spring on striker, the steel ball between cone valve and striker, shell block
Including for accommodating striker, cone valve, valve block and the accepting hole of steel ball, accepting hole includes the first cavity of connection, the second chamber
Body and third cavity, operating cylinder are connected to third cavity, and plunger pump is connected to the second cavity, and oil sump is connected to the first cavity,
Steel ball and second cavity form the first operating valve, and horizontal lever supports screw movement when rotating, screw drives upright lever
It swings, upright lever drives striker to be connected to the first cavity with the second cavity in the movement of the first cavity, and cone valve is in the first spring
Under the action of it is mobile to close third cavity to the second cavity, when plunger pump makees oil suction stroke, generate negative pressure, oil liquid is from oil sump
Through in the first cavity and the second cavity sucking plunger pump, when plunger makees oil extraction stroke, steel ball acts in liquid stream and closes the first work
Make valve to disconnect the first cavity and the second cavity, meanwhile, liquid stream, which pushes cone valve to open second, makes the second cavity and third as valve
Cavity connection, oil liquid enter operating cylinder.
The present invention further defines, and the shell block includes the first lug and a pair second that main part and main body extend
Lug, first lug are located at the top of a pair of second lug, and a pair of second lug is located at the two sides of horizontal lever.
The present invention further defines, and the accepting hole is arranged on main part, and first lug is equipped with the 4th perforation, Yi Dui
Two lugs are equipped with the first perforation, and horizontal lever is equipped with perforative second perforation, and tray carriage hydraulic device is equipped with across a pair second
First perforation of lug and the second perforation of horizontal lever are to be fixed on horizontal lever the locating shaft on shell block.
The present invention further defines, and the upright lever is equipped with a pair of of protrusion, and it is convex that a pair of of protrusion is located at first
The two sides of ear, a pair of of protrusion are respectively equipped with third perforation, and the tray carriage hydraulic device is equipped with across the first lug
The third of first perforation and a pair of of protrusion is perforated upright lever is fixed on the second locating shaft on shell block.
The present invention further defines, and there are also threaded hole, screw passes through threaded hole and supports with horizontal lever the upright lever
Top, the position for adjusting screw can make the tray carriage hydraulic device work be additionally provided with locking member in optimum state, the screw.
The present invention further defines, and there are also forked bodies for the upright lever, and the forked body straddles on striker and striker
End be fixed with abutment, abutment is located at the outside of upright lever.
The present invention further defines, and the tray carriage hydraulic device is additionally provided with the striker seat fixed with shell block, and striker penetrates
Striker seat, the second spring are supported with striker seat.
The present invention further defines, and the tray carriage hydraulic device further includes the valve block in the accepting hole, and described the
For one spring between plug screw and cone valve, cone valve penetrates valve block.
The present invention further defines, and the tray carriage hydraulic device further includes the sealing between striker seat and striker
Circle, the sealing ring between striker seat and shell block, the sealing ring between valve block and shell block and be located at plug screw and shell
Sealing ring between seat.
Screw movement is driven to make to hang down compared with the relevant technologies, when tray carriage hydraulic device of the present invention is rotated by horizontal lever
Straight lever is mobile, is further driven to striker movement, cooperates the first operating valve of mobile composition and the second work of steel ball and cone valve
It is dynamic that valve makes the liquid in operating cylinder, plunger pump and oil sump carry out flow control, achievees the purpose that decline automatically.
[Detailed description of the invention]
Fig. 1 is the exploded view of tray carriage hydraulic device of the present invention.
Fig. 2 is the assembling figure of tray carriage hydraulic device of the present invention.
Fig. 3 is the operation chart of tray carriage hydraulic device of the present invention, and wherein horizontal lever is in a horizontal position.
Fig. 4 is the operation chart of this present invention tray carriage hydraulic device, and wherein horizontal lever is in postrotational position.
[specific embodiment]
As shown in Figures 1 to 4, tray carriage hydraulic device of the present invention include operating cylinder 1, plunger pump 2, oil sump 3, shell block 4,
The horizontal lever 5 that is assembled on shell block 4, upright lever 6 and plug screw 7, the screw being assembled on upright lever 6 68, with vertical thick stick
The striker 69 of the abutting of bar 6, the cone valve 71 being assembled in third cavity 413 and the steel ball between cone valve 71 and striker 69
8。
Shell block 4 includes the first lug 42 that main part 41 and main body 41 extend and a pair of second lug 43.Main part
41 are equipped with accepting hole 410.First lug 42 is located at the top of a pair of second lug 43.First lug 42 is equipped with the 4th perforation 421
And a pair of second lug 43 is equipped with the first perforation 431.Horizontal lever 5 is equipped with perforative second perforation 51.A pair of second lug 43
Positioned at the two sides of horizontal lever 5, tray carriage hydraulic device of the present invention passes through the first of a pair of second lug 43 by locating shaft 44
Perforation 431 and the second perforation 51 of horizontal lever 5 are to be fixed on horizontal lever 5 on shell block 4.Accepting hole 410 includes connection
First cavity 411, the second cavity 412 and third cavity 413.Operating cylinder 1 is connected to third cavity 413, plunger pump 2 and second
Cavity 412 is connected to, and oil sump 3 is connected to the first cavity 411.Striker 69 is located in the first cavity 411, cone valve 71 is located at third chamber
In body 413 and steel ball 8 is located in the second cavity 412.
The upper end of upright lever 6 is equipped with a pair of of protrusion 61.A pair of of protrusion 61 is located at the two sides of first lug 42.
A pair of of protrusion 61 is respectively equipped with third perforation 610.Tray carriage hydraulic device of the present invention passes through a pair by the second locating shaft 45
The third perforation 610 of protrusion 61 and the 4th perforation 421 of first lug 42 are to be fixed on upright lever 6 on shell block 4.Vertically
There are also threaded holes 62 and the forked body 63 for being located at lower end for lever 6.Screw 68 screwed threaded hole 62 and supported with horizontal lever 5.
There are also locking members 681 on screw 68.The forked body 63 of 6 lower end of upright lever is movable to be straddled on striker 69 and the end of striker
It is fixed with abutment 691.Abutment 691 is located at the outside of upright lever 6.Tray carriage hydraulic device of the present invention is additionally provided with and shell block
4 fixed striker seats 692 and the second spring 693 being sleeved on striker 69.Striker 69 passes through striker seat 692.Pallet of the present invention
Vehicle hydraulic device further includes the valve block 711 in accepting hole 410 and the first spring between plug screw 7 and cone valve 71
712.Cone valve 71 penetrates the inside of valve block 711.Tray carriage hydraulic device of the present invention further includes being located at striker seat 692 and striker
Sealing ring 694 between 69, the sealing ring 695 between striker seat 692 and shell block 4, be located at valve block 711 and shell block 4 it
Between sealing ring 714, the sealing ring 713 between plug screw 7 and shell block 4, prevent from letting out and leaking out in liquid.
Tray carriage hydraulic device of the present invention by steel ball 8 and the second cavity 412 of the accepting hole 410 of shell block 4 right end hydraulic fluid port
The first operating valve is formed, by the valve block 711 and 712 groups of cone valve 71 and the first spring being fixed in the accepting hole 410 of shell block 4
At the second operating valve.
When tray carriage hydraulic device of the present invention works, the end of horizontal lever 5 is hung by a pendant, when the pendant is upward
Horizontal lever 5 is driven to rotate clockwise when pulling, horizontal lever 5 pushes screw 68 mobile and drives upright lever 6 outside together
It swings, upright lever 6 drives striker 69 to move right, at this point, striker leaves steel ball 8, makes the first operating valve " logical " or " stopping " shape
State, so-called " logical " or " stopping " and the first cavity 411 are related with 412 critical pressure difference of the second cavity, when the pressure of the first cavity 411
Higher than the second cavity 412 pressure when, liquid stream, which is pushed steel ball 8 open and moved to left from the first cavity 411, flows to the second cavity 412, at this time two
Chamber is in " logical " state, and when the pressure of the second cavity 412 is higher than the pressure of the first cavity 411, liquid stream pushes steel ball 8 to move to right directly
To closing, two chambers are in " stopping " state, when the pressure of the first cavity 411 is equal to the pressure of the second cavity 412, steel at this time
Ball 8 is sagging due to being self-possessed, and two chambers are in half logical state at this time.The cone valve 71 of second operating valve is made in the first spring 712 when initial
It moves right under and to be adjacent to from the hydraulic fluid port of the conical surface and valve block 711 to disconnect the second cavity 412 and third cavity 413, when
When plunger pump 2 makees oil suction stroke, the second cavity 412 generates negative pressure, and oil liquid is from oil sump 3 through the first cavity 411 and the second cavity 412
It sucks in plunger pump 2；When plunger pump makees oil extraction stroke, steel ball 8 moves right under liquid stream effect and closes the first cavity
411 and the second channel between cavity 412, while liquid stream pushes cone valve 71 to overcome the elastic resistance of the first spring 712
And the hydraulic fluid port of valve block 711 is left, so that the second cavity 412 be made to be connected to third cavity 413, final oil liquid enters operating cylinder
1, and the external work done of oil cylinder 1 that pushes the work forward, as plunger pump reciprocation cycle is inhaled, oil extraction stroke, enough oil liquid enters work
Cylinder makes operating cylinder 1 reach desired height；After the completion of operation, the operating force of the end of horizontal lever 5 discharges, and striker 69 is the
It is moved to the left under the action of two springs 693, since the active force of second spring 693 is greater than the first spring 712 and operating cylinder 1
Interior hydraulic coupling, striker 69 push steel ball 8 to move to left first and open the first operating valve, and then steel ball 8 is again continuous pushes away cone valve 71 and move to left
The second operating valve is opened, at this point, the first cavity 411, the second cavity 412 and third cavity 413 are connected to, the liquid in operating cylinder 1
Body flows back to oil sump 3 through third cavity 413 and the second cavity 412 and the first cavity 411 again, and operating cylinder 1 drops to just again at this time
Beginning shape body achievees the purpose that decline automatically.
Drive screw 68 is mobile to swing upright lever 6 when tray carriage hydraulic device of the present invention is rotated by horizontal lever 5,
It is further driven to the movement of striker 69, the movement of steel ball 8 and cone valve 71 and the first spring 712, second spring 693 is cooperated to provide
Reset force, so that the liquid in operating cylinder 1, plunger pump 2 and oil sump 3 has been carried out flow control dynamic, achieve the purpose that decline automatically.
Tray carriage hydraulic device of the present invention is transmitted by adjusting 68 position of screw on upright lever 6 through upright lever 6
Operating condition realization is finally able to striker 69 so that striker 69 be made to be in optimum position.
It should be pointed out that the foregoing is merely preferred forms of the invention, the embodiment being not all of, this field is general
Any equivalent variation that logical technical staff takes technical solution of the present invention by reading description of the invention, is this hair
Bright claim is covered.
Claims (9)
1. a kind of tray carriage hydraulic device, including operating cylinder, plunger pump, oil sump and shell block, it is characterised in that: the tray carriage
Hydraulic device further includes the horizontal lever being assembled on shell block, upright lever and the screw being assembled on upright lever, is assembled in
Nut on screw, the striker abutted with upright lever, the second operating valve being made of cone valve, valve block, the first spring, position
In the second spring on striker, the steel ball between cone valve and striker, shell block includes for accommodating striker, cone valve, valve
The accepting hole of housing and steel ball, accepting hole include the first cavity, the second cavity and third cavity, operating cylinder and third of connection
Cavity connection, plunger pump are connected to the second cavity, and oil sump is connected to the first cavity, and steel ball and second cavity form the first work
Make valve, the screw is adjusted by nut and exposes length on the upright lever, the tray carriage hydraulic device, which is equipped with, to be hung
Part hangs the end of horizontal lever, when the pendant pulls up, horizontal lever is driven to rotate clockwise, horizontal lever rotation
When support that screw is mobile, and screw drives upright lever to swing, upright lever drives striker to make the first cavity in the movement of the first cavity
It is connected to the second cavity, cone valve is mobile to close third cavity to the second cavity under the action of the first spring, works as plunger pump
When making oil suction stroke, negative pressure is generated, oil liquid sucks in plunger pump from oil sump through the first cavity and the second cavity, when plunger pump is arranged
When oily stroke, steel ball acts in liquid stream and closes the first operating valve to disconnect the first cavity and the second cavity, meanwhile, liquid stream pushes cone
Valve body, which opens the second operating valve, is connected to the second cavity with third cavity, and oil liquid enters operating cylinder.
2. tray carriage hydraulic device as described in claim 1, it is characterised in that: the shell block includes main part and main body
The first lug of extension and a pair of second lug, first lug are located at the top of a pair of second lug, and a pair of second lug is located at
The two sides of horizontal lever.
3. tray carriage hydraulic device as claimed in claim 2, it is characterised in that: the accepting hole is arranged on main part, the
One lug is equipped with the 4th perforation, and a pair of second lug is equipped with the first perforation, and horizontal lever is equipped with perforative second perforation, tray carriage
Hydraulic device is equipped with across first perforation and biperforate locating shaft.
4. tray carriage hydraulic device as claimed in claim 3, it is characterised in that: the upright lever is equipped with a pair of of protrusion,
The pair of protrusion is located at the two sides of first lug, and the pair of protrusion is respectively equipped with third perforation, the pallet
Vehicle hydraulic device is equipped with the second locating shaft across first perforation and third perforation.
5. tray carriage hydraulic device as described in claim 1, it is characterised in that: there are also threaded hole, screws for the upright lever
It is supported across threaded hole and with horizontal lever, is additionally provided with locking member on the screw.
6. tray carriage hydraulic device as claimed in claim 5, it is characterised in that: there are also forked bodies for the upright lever, described
Forked body straddles on striker and the end of striker is fixed with abutment, and abutment is located at the outside of upright lever.
7. tray carriage hydraulic device as described in claim 1, it is characterised in that: the tray carriage hydraulic device is additionally provided with and shell
The fixed striker seat of seat, striker penetrate striker seat, and the second spring is supported with striker seat.
8. tray carriage hydraulic device as described in claim 1, it is characterised in that: the tray carriage hydraulic device further includes position
In the valve block in accepting hole, for first spring between plug screw and cone valve, cone valve penetrates valve block.
9. tray carriage hydraulic device as described in claim 1, it is characterised in that: the tray carriage hydraulic device further includes position
Sealing ring between striker seat and striker, the sealing ring between striker seat and shell block, between valve block and shell block
Sealing ring and the sealing ring between plug screw and shell block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610399857.4A CN105819374B (en) | 2016-06-03 | 2016-06-03 | Tray carriage hydraulic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610399857.4A CN105819374B (en) | 2016-06-03 | 2016-06-03 | Tray carriage hydraulic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105819374A CN105819374A (en) | 2016-08-03 |
| CN105819374B true CN105819374B (en) | 2019-03-29 |
Family
ID=56532051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610399857.4A Active CN105819374B (en) | 2016-06-03 | 2016-06-03 | Tray carriage hydraulic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105819374B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH615889A5 (en) * | 1978-01-11 | 1980-02-29 | Stoecklin Walter Ag | Hydraulic lifting unit on hand pallet truck |
| CN2338526Y (en) * | 1998-05-14 | 1999-09-15 | 刘永兴 | Double-function man power hydraulic pump |
| KR100806922B1 (en) * | 2007-06-28 | 2008-02-22 | 주식회사 파카한일유압 | Flipper turn prevention valve of forklift truck |
| CN103848374B (en) * | 2014-03-19 | 2016-08-17 | 宁海佰成机械有限公司 | Manual forklift hydraulic safe system |
| CN203770289U (en) * | 2014-04-01 | 2014-08-13 | 宁海佰成机械有限公司 | Main oil cylinder structure of manual pallet trunk |
| CN203847769U (en) * | 2014-05-04 | 2014-09-24 | 温岭市才通吉高机械制造厂（普通合伙） | Novel three-way switching valve |
| CN203959751U (en) * | 2014-06-17 | 2014-11-26 | 浙江诺力机械股份有限公司 | A kind of quiet hand hydraulic carrier |
| CN205668921U (en) * | 2016-06-03 | 2016-11-02 | 宁海佰成机械有限公司 | Tray carriage hydraulic means |
-
2016
- 2016-06-03 CN CN201610399857.4A patent/CN105819374B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105819374A (en) | 2016-08-03 |
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