CN208441980U - A kind of hydraulic hand-pump - Google Patents
A kind of hydraulic hand-pump Download PDFInfo
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- CN208441980U CN208441980U CN201820958554.6U CN201820958554U CN208441980U CN 208441980 U CN208441980 U CN 208441980U CN 201820958554 U CN201820958554 U CN 201820958554U CN 208441980 U CN208441980 U CN 208441980U
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- plunger case
- oil
- pump
- hydraulic
- hydraulic hand
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Abstract
A kind of hydraulic hand-pump, including drive end bearing bracket (1)；Handle (2), the first plunger case (5) being connect with drive end bearing bracket (1)；The rear end cap (3) being connect with the first plunger case (5)；It is slidably connected with the first plunger case (5), the First piston bar (6) that the other end is connect with handle (2)；The first oil suction bar (7) being connected to the first plunger case (5)；The first check valve (8) between the first oil suction bar (7) and the first plunger case (5) is set；The second plunger case (9) being connect with rear end cap (3)；The second piston bar (10) being connect with the second plunger case (9) and First piston bar (6)；The second oil suction bar (11) being connected to the second plunger case (9)；Second one-way valve (12)；Third check valve (14)；4th check valve (15)；The hydraulic control one-way valve (13) that oil inlet is connected to the first plunger case (5), control port is connected to hydraulic hand-pump oil outlet (4), oil outlet is connected to oil return box.
Description
Technical field
The utility model relates to technical field of hydraulic pressure, more particularly, to a kind of hydraulic hand-pump.
Background technique
Manual pump is a kind of pump of manually strength.Unidirectional manual oil pump is that armstrong's patent can be converted to hydraulic energy
A kind of small size hydraulic pump station.Hydraulic hand-pump advantage easy to operate with its, easy to carry, output pressure is big, using mating
In the case where oil cylinder and specific purpose tool, various operations can be carried out, such as: lifting, bending, alignment, shearing, riveted, assembly, disassembly and
Some construction, military construction etc., are widely used.
CN206917816U disclosed a kind of hydraulic hand-pump on 01 23rd, 2018, including hydraulic handle, valve rod are pressed
Button, pump housing bottom cover and second piston bar, pump body top cover is equipped with below the valve rod button, and the top of the pump body top cover is solid
Surely there is fulcrum bearing, guide sleeve is provided in the second piston bar, pump body top cover, the pump housing are installed above the pump housing
Centre be provided with leakage fluid dram, pump housing bottom cover is installed, the centre of the pump housing is equipped with valve rod and stream below the pump housing
Road is provided with liquid tank below the valve rod, spring is equipped with below the liquid tank, is provided with below the pump housing
Inlet.
Under normal conditions, when hand-hydraulic pump work, during defeated pressure, load is the process changed from small to big, preceding
Phase hydraulic hand-pump operating pressure is low, and later stage work pressure is high.In the prior art, it when previous work pressure is low, can not achieve
Quick feed flow limits the raising of efficiency；When later stage work pressure is high, the artificial strength requirement of operator is larger, sometimes difficult
With pressing operation handle, the further pressurization to equipment is limited, the relevant operation in later period is influenced.For previous work pressure
It is low, to realize Quick-pressing, working efficiency is improved, has CN206917816U etc. to carry out relevant report, but in later stage work pressure
Power is high, how operating pressure is improved in the limited situation of artificial strength, there is not yet related technology reports.Change so providing one kind
Kind hydraulic hand-pump is required currently on the market.
Utility model content
In order to overcome the drawbacks of the prior art, the utility model intends to solve the technical problem by providing one kind in operating pressure
Quick fuel feeding is able to achieve when low, and when operating pressure is high, it can effectively reduce artificial strength requirement, realize the manual of high-pressure oil feed
Hydraulic pump.
In order to solve the above-mentioned technical problem, the utility model provides a kind of hydraulic hand-pump, including drive end bearing bracket；Before described
The handle of end cap one end connection；The first plunger case being connect with the drive end bearing bracket other end；It is connect with first plunger case
Rear end cap；First end is slidably connected with first plunger case, the First piston bar that the other end is connect with the handle；With it is described
First oil suction bar of the first plunger case connection；The first check valve between the first oil suction bar and the first plunger case is set；
The second plunger case being connect with the rear end cap；First end is slidably connected with second plunger case, the other end and described first
The second piston bar of piston rod connection；The second oil suction bar being connected to second plunger case；It is arranged in the second oil suction bar
With the second one-way valve between the second plunger case；Oil inlet is connected to first plunger case, and oil outlet is pumped out with hand-hydraulic
The third check valve of hydraulic fluid port connection；Oil inlet is connected to second plunger case, and oil outlet is connected to hydraulic hand-pump oil outlet
The 4th check valve；Oil inlet is connected to first plunger case, control port is connected to the hydraulic hand-pump oil outlet, is gone out
The hydraulic control one-way valve that hydraulic fluid port is connected to oil return box.
As one of improved technology scheme, hydraulic hand-pump provided by the utility model, the hydraulic control one-way valve includes setting
The valve seat in the rear end cap is set, the mandril being slidably connected with the valve base cavity, the nonreturn valve core being connect with the valve seat,
The control spring that one end is connect with the nonreturn valve core far from mandril side, the spring base being connect with the control spring other end.
On the basis of one of above-mentioned improvement project, as further improvement technical solution, hand provided by the utility model
Hydrodynamic press pump, the spring base are threadedly coupled with the valve seat.
On the basis of one of above-mentioned improvement project, as further improvement technical solution, hand provided by the utility model
Hydrodynamic press pump, the hydraulic control one-way valve further include being located at the mandril far from nonreturn valve core side, the liquid connecting with the valve seat
Pressure oil connector.
On the basis of one of above-mentioned improvement project, as further improvement technical solution, hand provided by the utility model
Hydrodynamic press pump, the nonreturn valve core are steel ball, and the mandril is greater than the effective pressure-bearing sectional area of control oil to be contacted with steel ball
The sectional area in hole.
On the basis of one of above-mentioned improvement project, as further improvement technical solution, hand provided by the utility model
Hydrodynamic press pump, separate spring base one end of the valve base cavity have spill limited step, and the mandril is far from control spring one
End is equipped with the boss matched with the spill limited step.
As the two of improved technology scheme, hydraulic hand-pump provided by the utility model, the handle includes middle part and institute
The First piston bar handlebar hinged far from the first plunger cylinder end is stated, both ends are hinged with the handle boom end and drive end bearing bracket respectively
Connecting rod.
As the three of improved technology scheme, hydraulic hand-pump provided by the utility model, the section of first plunger case
Product is greater than the sectional area of the second plunger case.
In the absence of conflict, above-mentioned improved technology scheme can be implemented alone or in combination.
Technical solution provided by the utility model, when the operating pressure of hydraulic hand-pump oil outlet is led lower than hydraulic control one-way valve
When logical operating pressure, third check valve, the 4th check valve are opened, and the first plunger case and the second plunger case are arranged to oil outlet simultaneously
Oil realizes quick fuel feeding.When the operating pressure of oil outlet is higher than the operating pressure of hydraulic control one-way valve conducting, hydraulic control one-way valve is opened
It opens, third closed check valve, the first plunger case oil extraction into oil return box, the first plunger case is in unloading condition, the 4th check valve
It opens, the second plunger case is to oil outlet oil extraction.Manual pump is the output of small flow at this time, because big pump is in unloading condition, is being operated
High-pressure oil feed can be achieved in the limited situation of the artificial strength of personnel.Therefore, hydraulic pump provided by the utility model, in operating pressure
Quick fuel feeding is able to achieve when low, and when operating pressure is high, the artificial strength requirement of operator can be reduced, realizes high-pressure oil feed.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and is constituted part of this application, the utility model
Illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.In attached drawing
In:
Fig. 1 is the principle schematic diagram of embodiment hydraulic hand-pump；
Fig. 2 is A-A of Fig. 1 to sectional structure schematic illustration；
Fig. 3 is B-B of Fig. 2 to sectional structure schematic illustration；
Fig. 4 is C-C of Fig. 1 to sectional structure schematic illustration；
Fig. 5 is the hydraulic schematic diagram of embodiment hydraulic hand-pump.
Specific embodiment
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.
Hydraulic hand-pump as shown in Figures 1 to 5, including drive end bearing bracket 1, the handle 2 connecting with 1 one end of drive end bearing bracket are and preceding
First plunger case 5 of 1 other end of end cap connection, the rear end cap 3 connecting with the first plunger case 5, first end and the first plunger case 5 are sliding
Dynamic connection, the First piston bar 6 that the other end is connect with handle 2, the first oil suction bar 7 being connected to the first plunger case 5 are arranged the
The first check valve 8 between one oil suction bar 7 and the first plunger case 5, the second plunger case 9 being connect with rear end cap 3, first end and the
Two plunger cases 9 are slidably connected, the second piston bar 10 that the other end is connect with First piston bar 6, be connected to the second plunger case 9
The second one-way valve 12 between the second oil suction bar 11 and the second plunger case 9, oil inlet and the first plunger is arranged in two oil suction bars 11
Cylinder 5 is connected to, and the third check valve 14 that oil outlet is connected to hydraulic hand-pump oil outlet 4, oil inlet is connected to the second plunger case 9,
The 4th check valve 15 that oil outlet is connected to hydraulic hand-pump oil outlet 4, oil inlet is connected to the first plunger case 5, control port
It is connected to hydraulic hand-pump oil outlet 4, the hydraulic control one-way valve 13 that oil outlet is connected to oil return box.
Working principle: the first plunger case 5 and First piston bar 6 constitute a flow pump (calling big pump in the following text), the second plunger case 9
A flow pump (calling small pump in the following text) is constituted with second piston bar 10, hydraulic control one-way valve is equipped between big pump and small pump oil discharge outlet
13, First piston bar 6 is interior to have axial cavity, and second piston bar 10 is connect with the axial cavity of First piston bar 6.When handle 2
Up when (diagram direction) lift, (diagram direction) movement synchronous with second piston bar 10 up of First piston bar 6, the first column are driven
The closed containing cavity volume of plug cylinder 5 and the second plunger case 9 increases, and the first plunger case 5 passes through the first check valve 8 and the first oil suction bar 7
Oil suction, the second plunger case 9 pass through 11 oil suction of second one-way valve 12 and the second oil suction bar.When handle 2 presses down (diagram direction),
Drive First piston bar 6 (diagram direction) movement, the first plunger case 5 and the second plunger synchronous with second piston bar 10 down
The closed containing cavity volume of cylinder 9 is reduced, and the first check valve 8 and second one-way valve 12 are closed.When the operating pressure of oil outlet 4 is lower than liquid
When controlling the operating pressure that check valve 13 is connected, third check valve 14, the 4th check valve 15 are opened, and big pump and small pump are simultaneously to fuel-displaced
4 oil extractions of mouth, realize quick fuel feeding.When the operating pressure of oil outlet 4 is higher than the operating pressure that hydraulic control one-way valve 13 is connected, hydraulic control
Check valve 13 is opened, and third check valve 14 is closed, and pumps the oil extraction into oil return box greatly, is in unloading condition, and the 4th check valve 15 is opened
It opens, it is small to pump to 4 oil extraction of oil outlet.Hydraulic hand-pump is the output of small flow at this time, because big pump is in unloading condition, in operator
High-pressure oil feed can be achieved in the limited situation of artificial strength.Therefore, hydraulic pump provided by the utility model, when operating pressure is low
It is able to achieve quick fuel feeding, and when operating pressure is high, the artificial strength requirement of operator can be reduced, realizes high-pressure oil feed.
Optionally, as shown in figure 4, hydraulic hand-pump provided by the utility model, hydraulic control one-way valve 13 include being arranged rear
Valve seat in end cap 3, the mandril 16 being slidably connected with valve base cavity, the nonreturn valve core 17 being connect with valve seat, one end and check valve
The control spring 18 that core 17 is connected far from 16 side of mandril, the spring base 19 being connect with control 18 other end of spring.Mandril 16 is separate
18 side of spring is controlled, there is the cavity being connected to oil outlet 4, when 4 pressure of oil outlet is greater than the set value, mandril 16 overcomes control
The elastic force of spring 18 processed, mobile to control 18 direction of spring, mandril 16 pushes nonreturn valve core 17 open, 5 oil discharge outlet of the first plunger case with
Oil return box communicates, and manual pump only has the second plunger case 9 to 4 fuel feeding of oil outlet.When 4 pressure of oil outlet is lower than setting value, mandril
16 under the elastic force effect of control spring 18, and mandril 16 cannot push nonreturn valve core 17 open, and 5 oil discharge outlet of the first plunger case passes through third
Check valve 14 is communicated with oil outlet 4, with the second plunger case 9 together to 4 fuel feeding of oil outlet.
Optionally, as shown in figure 4, hydraulic hand-pump provided by the utility model, spring base 19 are threadedly coupled with valve seat.Bullet
When spring abutment 19 is threadedly coupled the adjustable conducting of hydraulic control one-way valve 13 with valve seat, the charge oil pressure of manual pump.
Optionally, as shown in figure 4, hydraulic hand-pump provided by the utility model, hydraulic control one-way valve 13 further include being located at top
Bar 16 is far from 17 side of nonreturn valve core, the hydraulic oil connector 20 that connect with valve seat.
Optionally, as shown in figure 4, hydraulic hand-pump provided by the utility model, nonreturn valve core 17 are steel ball, mandril 16 is right
Effective pressure-bearing sectional area S1 of control oil is greater than the sectional area S2 in the hole contacted with steel ball.
Optionally, as shown in figure 4, hydraulic hand-pump provided by the utility model, the separate spring base 19 1 of valve base cavity
End has spill limited step, and mandril 16 is equipped with the boss 22 matched with spill limited step far from control 18 one end of spring.
Boss 22 limits the maximum moving distance of mandril 16, determines the aperture of hydraulic control one-way valve 13.
Optionally, as shown in Figure 1, hydraulic hand-pump provided by the utility model, handle 2 include middle part and First piston bar
6 handlebars hinged far from 5 end of the first plunger case, the both ends connecting rod 21 hinged with handle boom end and drive end bearing bracket 1 respectively.
Optionally, as shown in Figures 2 and 3, hydraulic hand-pump provided by the utility model, the sectional area of the first plunger case 5
Greater than the sectional area of the second plunger case 9.
Obviously, the utility model is not limited to the above preferred embodiment, can also be in the utility model claims and explanation
In the spirit that book limits, the transformation and improvement of diversified forms are carried out, can solve same technical problem, and obtains expected technology
Effect, therefore do not repeat.Those skilled in the art directly or can associate all from content disclosed by the utility model
Scheme, as long as also belonging to the protection scope of the utility model within the spirit that claim limits.
Claims (8)
1. a kind of hydraulic hand-pump, including drive end bearing bracket (1)；The handle (2) being connect with the drive end bearing bracket (1) one end；Before described
The first plunger case (5) of end cap (1) other end connection；The rear end cap (3) being connect with first plunger case (5)；First end with
First plunger case (5) is slidably connected, the First piston bar (6) that the other end is connect with the handle (2)；With first column
First oil suction bar (7) of plug cylinder (5) connection；First be arranged between the first oil suction bar (7) and the first plunger case (5) is single
To valve (8)；It is characterized in that, further including the second plunger case (9) being connect with the rear end cap (3)；First end and described second
Plunger case (9) is slidably connected, the second piston bar (10) that the other end is connect with the First piston bar (6)；With second column
Second oil suction bar (11) of plug cylinder (9) connection；It is arranged second between the second oil suction bar (11) and the second plunger case (9)
Check valve (12)；Oil inlet is connected to first plunger case (5), oil outlet be connected to hydraulic hand-pump oil outlet (4)
Three check valves (14)；Oil inlet is connected to second plunger case (9), and oil outlet is connected to hydraulic hand-pump oil outlet (4)
4th check valve (15)；Oil inlet is connected to first plunger case (5), control port and the hydraulic hand-pump oil outlet
(4) hydraulic control one-way valve (13) that connection, oil outlet are connected to oil return box.
2. hydraulic hand-pump according to claim 1, which is characterized in that the hydraulic control one-way valve (13) includes being arranged in institute
State the valve seat in rear end cap (3), the mandril being slidably connected with the valve base cavity (16), the nonreturn valve core connecting with the valve seat
(17), the control spring (18) that one end is connect with the nonreturn valve core (17) far from mandril (16) side, with the control spring
(18) spring base (19) of other end connection.
3. hydraulic hand-pump according to claim 2, which is characterized in that the spring base (19) and the valve seat screw thread connect
It connects.
4. hydraulic hand-pump according to claim 2, which is characterized in that the hydraulic control one-way valve (13) further includes being located at institute
State mandril (16) separate nonreturn valve core (17) side, the hydraulic oil connector (20) connecting with the valve seat.
5. hydraulic hand-pump according to claim 2, which is characterized in that the nonreturn valve core (17) is steel ball, the top
Bar (16) is greater than the sectional area in the hole contacted with steel ball to effective pressure-bearing sectional area of control oil.
6. hydraulic hand-pump according to claim 2, which is characterized in that the separate spring base (19) one of the valve base cavity
End has spill limited step, and the mandril (16) is equipped with far from control spring (18) one end to be matched with the spill limited step
The boss (22) of conjunction.
7. hydraulic hand-pump according to claim 1, which is characterized in that the handle (2) includes middle part and described first
Piston rod (6) holds hinged handlebar far from the first plunger case (5), both ends respectively with the handle boom end and drive end bearing bracket (1)
Hinged connecting rod (21).
8. hydraulic hand-pump according to claim 1, which is characterized in that the sectional area of first plunger case (5) is greater than
The sectional area of second plunger case (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820958554.6U CN208441980U (en) | 2018-06-21 | 2018-06-21 | A kind of hydraulic hand-pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820958554.6U CN208441980U (en) | 2018-06-21 | 2018-06-21 | A kind of hydraulic hand-pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208441980U true CN208441980U (en) | 2019-01-29 |
Family
ID=65090560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820958554.6U Active CN208441980U (en) | 2018-06-21 | 2018-06-21 | A kind of hydraulic hand-pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208441980U (en) |
-
2018
- 2018-06-21 CN CN201820958554.6U patent/CN208441980U/en active Active
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