CN208610247U - A kind of hydraulic pump that can gently go up and down - Google Patents
A kind of hydraulic pump that can gently go up and down Download PDFInfo
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- CN208610247U CN208610247U CN201721159262.8U CN201721159262U CN208610247U CN 208610247 U CN208610247 U CN 208610247U CN 201721159262 U CN201721159262 U CN 201721159262U CN 208610247 U CN208610247 U CN 208610247U
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- hydraulic pump
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Abstract
The utility model provides a kind of hydraulic pump that can gently go up and down, and belongs to hydraulic pump technical field.The lifting shaft that it solves existing hydraulic pump rises the technical problems such as unsmooth.The cushion dashpot of both ends sealing is provided in the shoe cream room of this hydraulic pump, sliding is provided with damper piston and cushion dashpot inner cavity is divided into epicoele and cavity of resorption in cushion dashpot, upper intracavitary apical grafting has the first spring, and the bottom of cavity of resorption is connected to the intracavity bottom of the intracavity bottom of pump oil cylinder and lift cylinders respectively.The utility model is provided with cushion dashpot in shoe cream room, and when work, oil liquid is introduced into cushion dashpot, then entering lift cylinders, the lifting shaft in lift cylinders is jacked up, the buffering of cushion dashpot is passed through, keep the rising of lifting shaft more smooth, reduces a wrong sense, improve the stability and comfort of this hydraulic pump.
Description
Technical field
The utility model belongs to hydraulic pump technical field, refers in particular to a kind of hydraulic pump that can gently go up and down.
Background technique
As people's living standard is continuously improved, chair lift has gradually been come into people's lives, improves the work of people
Make the comfort of efficiency and life, currently, chair lift in the market mainly includes pressure liftable chair and hydraulic lifting chair, air pressure liter
Dropping chair is to be filled with nitrogen in the cylinder, and the lifting of chair is realized by compressed inert, but pours into gas currently on the market
Body is not the inert gas of high-purity, is easy to produce high temperature in lifting process repeatedly and ignites, and cylinder is caused to collapse out or collapse
It splits, generates explosion, safety is lower.Hydraulic lifting chair is opposite safe many with pressure liftable chair, therefore the office chair of top grade,
Needing often to adjust the hairdressers' chair etc. of height is hydraulic lifting chair, but there is risings for hydraulic lifting chair currently on the market
Rough problem, rising when, have pause and transition in rhythm or melody sense, reduce comfort.
Summary of the invention
The purpose of the utility model is to provide more gentle hydraulic pumps stable, without pause and transition in rhythm or melody sense when a kind of lifting.
Purpose of the utility model is realized as follows:
A kind of hydraulic pump that can gently go up and down, the pump housing including upper and lower ends opening, the lower end sealed connection with the pump housing
Pedestal, the sealing cover that is tightly connected with the upper end of the pump housing, the pump housing, pedestal and sealing cover surround to form shoe cream room, described
The lift cylinders of tubular and the pump oil cylinder of upper end opening are vertically arranged in shoe cream room, the lateral wall and sealing cover of lift cylinders upper end are close
Sealing is fixed, and the lower end of lift cylinders and pedestal sealing are fixed, and in-oil cylinder oil liquid can will be pumped by, which being provided in the pump oil cylinder, squeezes
To the pump oil piston of lift cylinders, which is characterized in that be provided with the cushion dashpot of both ends sealing, sliding in cushion dashpot in the shoe cream room
It is provided with damper piston and cushion dashpot inner cavity is divided into epicoele and cavity of resorption, upper intracavitary apical grafting has the first spring, the bottom point of cavity of resorption
It is not connected to the intracavity bottom of the intracavity bottom of pump oil cylinder and lift cylinders.
Its working principles are as follows: this hydraulic pump is provided with cushion dashpot in shoe cream room, when work, in-oil cylinder oil liquid quilt is pumped
Pump oil piston press enter cushion dashpot and be located at cushion dashpot under it is intracavitary, into cushion dashpot cavity of resorption oil liquid push damper piston move
The first spring is moved and compresses, while part oil liquid enters in the lift cylinders being connected to cushion dashpot also by pipeline, by lifting shaft top
It rises, damper piston is gradually pushed back into original position then as the first spring in cushion dashpot, intracavitary oil liquid is also delayed under cushion dashpot
Slow is injected into lift cylinders, lasting to jack up lifting shaft, and further, the elastic force of above-mentioned first spring is more by force and always
In compressive state, it is ensured that the oil liquid in cushion dashpot can be smoothly pressed into lift cylinders by damper piston, whole process due to
There is the buffering of cushion dashpot, the rising of lifting shaft is more smooth, wrong sense of not pausing, and improves the stability of this hydraulic pump and comfortable
Property；Only in contrast, in practical applications, cushion dashpot and damper piston are also possible to laterally set above-mentioned epicoele and cavity of resorption
It sets, epicoele and cavity of resorption are left chamber and right chamber at this time, and the first spring is provided in one of cavity, opposite with the first spring
End face is connected to the intracavity bottom of the intracavity bottom of pump oil cylinder and lift cylinders respectively.
In the hydraulic pump that above-mentioned one kind can gently be gone up and down, control oil is provided between the cushion dashpot and lift cylinders
The regulating valve of flow quantity.Above-mentioned flow refers to the oil liquid quantity for entering lift cylinders in the unit time from cushion dashpot, passes through adjusting
Valve flows into the flow of lift cylinders to control oil liquid from cushion dashpot, and flow is lower, and the slower lifting shaft rising in lift cylinders the more smooth,
Flow is higher, and the lifting shaft rising in lift cylinders is faster, but stability can be reduced slightly, and user or manufacturer can be according to productions
The actual needs of product adjusts regulating valve.
In the hydraulic pump that above-mentioned one kind can gently be gone up and down, the regulating valve includes spool and is set on the base
Valve pool, the valve pool are made of fixed part and columned throughput, the valve stepped hole more than second level from opening to slot bottom
The outer end of core and fixed part are tightly connected, tapered of the inner end of spool, and the taper platform of control valve core is moved in the axial direction of throughput
Momentum controllable flow rate, the one end of the throughput far from fixed part are connected to the intracavity bottom of cushion dashpot, and the fixed part leans on
The nearly end of throughput is connected to the intracavity bottom of lift cylinders.The design of this regulating valve structure can by control valve core inner end with
The distance between throughput cell wall controls the flow of oil liquid between cushion dashpot and lift cylinders；As one of scheme, valve pool
Set on the upper end of the pedestal, spool is located in shoe cream room, and producer mixes up regulating valve according to the actual needs of product in advance, then
It is assembled again, the program is surprisingly touched after can be avoided factory or artificial adjust causes the aperture of regulating valve improper, shadow
Ring the comfort that product uses；Alternatively, the valve pool is set to the lower end of the pedestal, and spool is inserted into valve from the external world
In slot, the program can according to actual needs at any time be controlled regulating valve, be operated more convenient.
In the hydraulic pump that above-mentioned one kind can gently be gone up and down, the oil inlet being connected to shoe cream room is provided on the pedestal
Hole, the intracavity bottom of the pump oil cylinder are provided with the liquid outlet channel being connected to cushion dashpot intracavity bottom, are provided on liquid outlet channel
Oil liquid is avoided to flow back into the first check valve of pump oil cylinder from cushion dashpot, the intracavity bottom of shoe cream room and pump oil cylinder, which is provided with, mutually to be interconnected
Logical oil inlet passage is provided with the second one-way valve for avoiding oil liquid from flowing back into shoe cream room from pump oil cylinder in oil inlet passage.Above-mentioned
When the design of one check valve and second one-way valve is so that pump oil piston moves up, the first closed check valve, second at fuel feed hole be single
It is opened to valve, oil liquid enters in pump oil cylinder from shoe cream room by fuel feed hole, and when pump oil piston moves down, the first check valve is opened, the
Two closed check valves, oil liquid flow into cushion dashpot from pump oil cylinder, therefore the first check valve and second one-way valve cooperation, realize pump
Two movements of oil cylinder oil inlet and pump oil.
In the hydraulic pump that above-mentioned one kind can gently be gone up and down, the hydraulic pump includes foot-driven lever, the foot-driven lever with
Sealing cover by articulated shaft be articulated and connected, the front end of the foot-driven lever is vertical with articulated shaft to be fixed, the middle part of the articulated shaft and
The latch segment of restricted lifting shaft sliding is set between lifting shaft.The locking member and foot-driven lever cooperate, when foot-driven lever turns downwards
When dynamic, retaining mechanism unclamps lifting shaft, and lifting shaft is enable to slide up and down；When foot-driven lever homing, retaining mechanism will be risen
Shaft locking is dropped, lifting shaft is avoided to slide up and down.
In the hydraulic pump that above-mentioned one kind can gently be gone up and down, it is arranged along the vertical direction on the left side of the latch segment
There is the first C-shaped channel, the cell wall of first C-shaped channel and the lateral wall of lifting shaft cooperate, on the right side of the latch segment laterally
It is provided with the second C-shaped channel, the articulated shaft is eccentric shaft, and the cell wall of second C-shaped channel is resisted against the outside of the articulated shaft
On wall, the latch segment is clamped between lifting shaft and articulated shaft and can unclamp as foot-driven lever rotates down.
In the hydraulic pump that above-mentioned one kind can gently be gone up and down, the upper end of the pump oil piston is connected with piston rod, institute
The upper end for stating piston rod is stretched out through sealing cover and from the upper end of sealing cover, and the piston rod connect with seal cap sealing and can
Axial reciprocating along pump oil cylinder slides, and the upper end of the idler wheel and piston rod that are arranged on the foot-driven lever is slidably matched.This hydraulic pump
When adjusting lifting shaft height, since the angle between foot-driven lever and piston rod can change as foot-driven lever rotates down, and
It is the same contact that the design of idler wheel, which can then make the upper end of whole process idler wheel and piston rod all, avoids and generates between the two
Friction, keeps whole process more stable, gentle.
In the hydraulic pump that above-mentioned one kind can gently be gone up and down, installation is fixed on the piston rod on the outside of the pump oil cylinder
Plate, apical grafting has second spring between mounting plate and pump oil cylinder or between pedestal, and it is solid that upper end is vertically arranged in the shoe cream room
Mandril on mounting plate downside is provided with the oil outlet being connected to lift cylinders on the pedestal, sets in the oil outlet
It is equipped with the valve for avoiding oil liquid from flowing out, when foot-driven lever is floored, the mandril can follow mounting plate to move down and by valve top
It opens.The design of second spring can make pump have piston homing after each pump oil, in pump oil cylinder full of oil liquid, facilitate next time
Pump oil, while also contributing to slowing down the speed of pump oil piston decline, keep the process of pump oil piston pump oil gentler, is conducive to mention
The stability and comfort of this high hydraulic pump；Further, the design of mandril then can be when foot-driven lever be floored, by valve
To opening, flow into the oil liquid in lift cylinders in shoe cream room, lifting shaft is moved down with the outflow of oil liquid, can be in lifting shaft position
The position that lifting shaft is reset when excessively high, restarts to adjust.
In the hydraulic pump that above-mentioned one kind can gently be gone up and down, the fuel feed hole, pump oil cylinder, cushion dashpot, valve pool, lifting
The pipeline connection being arranged in pedestal is passed sequentially through between cylinder and oil outlet.Above-mentioned pipeline when producing pedestal directly at
Type, it is convenient for production, while assembly and connecting pipe are also eliminated, mounting process is simplified, the life of this hydraulic pump is improved
Efficiency, and directly built-in pipeline are produced, stability is higher, is not in pipeline breaking lamp problem.
In the hydraulic pump that above-mentioned one kind can gently be gone up and down, lifting groove, dashpot and pump are provided on the pedestal
The cell wall of oil groove, the outer wall of the lift cylinders lower end and lifting groove, which seals, to be fixed, the lower end of the cushion dashpot have opening and
The outer wall of cushion dashpot lower end and the cell wall of dashpot are sealed and are fixed, and the outer wall of pump oil cylinder lower end and the cell wall of pump oil slot seal
It is fixed.The design of lifting groove, dashpot and pump oil slot not only contributes to installation lift cylinders, cushion dashpot and pump oil cylinder, also helps
All parts are connected to by the pipeline being built on pedestal, improve the stability of this hydraulic pump.
Compared with the prior art, the utility model has prominent and beneficial technical effects that:
This hydraulic pump is provided with cushion dashpot in shoe cream room, and when work, oil liquid is introduced into cushion dashpot, then goes up and down entering
Lifting shaft in lift cylinders is jacked up, by the buffering of cushion dashpot, keeps the rising of lifting shaft more smooth by cylinder, reduces a wrong sense,
Improve the stability and comfort of this hydraulic pump.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the pedestal of this hydraulic pump.
Fig. 2 is the whole diagrammatic cross-section that this hydraulic pump C-C along Fig. 1 is splitted in direction.
Fig. 3 is the whole diagrammatic cross-section that this hydraulic pump A-A along Fig. 1 is splitted in direction.
Fig. 4 is the diagrammatic cross-section of this hydraulic pump pedestal that C-C is splitted in direction along Fig. 1.
Fig. 5 is the diagrammatic cross-section of this hydraulic pump pedestal that A-A is splitted in direction along Fig. 1.
Fig. 6 is the diagrammatic cross-section of this hydraulic pump pedestal that B-B is splitted in direction along Fig. 1.
Fig. 7 is the diagrammatic cross-section of this hydraulic pump pedestal that D-D is splitted in direction along Fig. 1.
Fig. 8 is the diagrammatic cross-section of the sealing cover of this hydraulic pump.
Fig. 9 is the structural schematic diagram of the locking member of this hydraulic pump.
Figure 10 is the schematic illustration of this hydraulic pump.
In figure, 1, the pump housing；2, pedestal；3, sealing cover；4, shoe cream room；5, pump oil cylinder；6, pump oil piston；7, cushion dashpot；8,
Damper piston；9, the first spring；10, regulating valve；11, spool；12, valve pool；13, throughput；14, fixed part；15, taper platform；
16, fuel feed hole；17, the first check valve；18, second one-way valve；19, foot-driven lever；20, articulated shaft；21, locking member；22, the first C
Type groove；23, the second C-shaped channel；24, piston rod；25, idler wheel；26, mounting plate；27, second spring；28, mandril；29, oil outlet；
30, valve；31, pipeline；32, lifting groove；33, dashpot；34, pump oil slot；35, lift cylinders；36, lifting shaft；37, epicoele；38,
Cavity of resorption.
Specific embodiment
The utility model is further described with specific embodiment with reference to the accompanying drawing, referring to Fig. 1-10:
Originally the hydraulic pump that can gently go up and down, the pump housing 1 including upper and lower ends opening, the lower end sealed connection with the pump housing 1
Pedestal 2, the sealing cover 3 that is tightly connected with the upper end of the pump housing 1, the pump housing 1, pedestal 2 and the encirclement of sealing cover 3 form shoe cream room 4,
Be vertically arranged with the lift cylinders 35 of tubular and the pump oil cylinder 5 of upper end opening in shoe cream room 4, the lateral wall of 35 upper end of lift cylinders with
The sealing of sealing cover 3 is fixed, and the lower ends of lift cylinders 35 and the sealing of pedestal 2 are fixed, and being provided in pump oil cylinder 5 can will be in pump oil cylinder 5
Oil liquid be expressed to the pump oil pistons 6 of lift cylinders 35, be provided with the cushion dashpot 7 of both ends sealing in shoe cream room 4, it is sliding in cushion dashpot 7
Dynamic to be provided with damper piston 87 inner cavity of cushion dashpot is divided into epicoele 37 and cavity of resorption 38, apical grafting has the first spring 9 in epicoele 37,
The bottom of cavity of resorption 38 is connected to the intracavity bottom of the intracavity bottom of pump oil cylinder 5 and lift cylinders 35 respectively；Cushion dashpot 7 and lift cylinders 35
Between be provided with control oil liquid flow regulating valve 10.Above-mentioned flow, which referred in the unit time, enters lift cylinders from cushion dashpot 7
35 oil liquid quantity controls the flow that oil liquid flows into lift cylinders 35 from cushion dashpot 7 by regulating valve 10, and flow is lower, lifting
The slower the rising of lifting shaft 36 in cylinder 35 the more smooth, and flow is higher, and the rising of lifting shaft 36 in lift cylinders 35 is faster, but stability
It can slightly reduce, user or manufacturer can adjust regulating valve 10 according to the actual needs of product.
Further, as shown in Figure 3 and Figure 5, regulating valve 10 includes spool 11 and the valve pool 12 being arranged on pedestal 2, valve
Slot 12 is made of fixed part 14 and columned throughput 13 stepped hole more than second level from opening to slot bottom, spool 11 it is outer
End is tightly connected with fixed part 14, and the inner end of spool 11 tapered 15, the taper platform 15 of control valve core 11 is in throughput 13
Axial internal clearance controllable flow rate, the one end of throughput 13 far from fixed part 14 are connected to the intracavity bottom of cushion dashpot 7, fixed part
14 are connected to close to the end of throughput 13 with the intracavity bottom of lift cylinders 35.The design of 10 structure of this regulating valve can pass through control
The distance between 13 cell wall of 11 inner end of spool and throughput controls the flow of oil liquid between cushion dashpot 7 and lift cylinders 35；As
One of scheme, valve pool 12 are set to the upper end of pedestal 2, and spool 11 is located in shoe cream room 4, and producer is according to the actual needs of product
Regulating valve 10 is mixed up in advance, is then assembled again, the program is surprisingly touched after can be avoided factory or artificial adjust causes
The aperture of regulating valve 10 is improper, influences the comfort that product uses；Alternatively, valve pool 12 is set under pedestal 2
End, spool 11 is out of the external world's insertion valve pool 12, and the program can according to actual needs at any time control regulating valve 10, operation
It is more convenient.
As shown in figs. 2,4 and 6, be provided with the fuel feed hole 16 being connected to shoe cream room 4 on pedestal 2, pump oil cylinder 5 it is interior
Bottom of chamber portion is provided with the liquid outlet channel being connected to 7 intracavity bottom of cushion dashpot, is provided on liquid outlet channel and avoids oil liquid from cushion dashpot 7
Flow back into the first check valve 17 of pump oil cylinder 5, it is logical that the intracavity bottom of shoe cream room 4 and pump oil cylinder 5 is provided with interconnected oil inlet
Road is provided with the second one-way valve 18 for avoiding oil liquid from flowing back into shoe cream room 4 from pump oil cylinder 5 in oil inlet passage.Above-mentioned first is unidirectional
When the design of valve 17 and second one-way valve 18 is so that pump oil piston 6 moves up, the first check valve 17 is closed, and the at fuel feed hole 16
Two check valves 18 are opened, and oil liquid enters in pump oil cylinder 5 from shoe cream room 4 by fuel feed hole 16, and when pump oil piston 6 moves down, first is single
It is opened to valve 17, second one-way valve 18 is closed, and oil liquid flows into cushion dashpot 7 from pump oil cylinder 5, therefore the first check valve 17 and second
Check valve 18 cooperates, and realizes 5 oil inlet of pump oil cylinder and two movements of pump oil.
As shown in Figures 2 and 3, hydraulic pump includes that foot-driven lever 19, foot-driven lever 19 and sealing cover 3 are hinged by articulated shaft 20
Connection, the front end of foot-driven lever 19 is vertical with articulated shaft 20 fixed, is arranged between the middle part and lifting shaft 36 of articulated shaft 20 restricted
The latch segment that lifting shaft 36 slides.Locking member 21 and foot-driven lever 19 cooperate, when foot-driven lever 19 rotates down, retaining mechanism pine
Lifting shaft 36 is opened, lifting shaft 36 is enable to slide up and down；When 19 homing of foot-driven lever, retaining mechanism locks lifting shaft 36
Tightly, lifting shaft 36 is avoided to slide up and down；Further, as shown in figure 9, being provided on the left side of latch segment along the vertical direction
One C-shaped channel 22, the cell wall of the first C-shaped channel 22 and the lateral wall of lifting shaft 36 cooperate, and are horizontally arranged on the right side of latch segment
Second C-shaped channel 23, articulated shaft 20 are eccentric shaft, and the cell wall of the second C-shaped channel 23 is resisted against on the lateral wall of articulated shaft 20, latch segment
It is clamped between lifting shaft 36 and articulated shaft 20 and can be as foot-driven lever 19 rotates down and unclamps.
As shown in Figure 2 and Figure 7, the upper end of pump oil piston 6 is connected with piston rod 24, and sealing cover is run through in the upper end of piston rod 24
It 3 and is stretched out from the upper end of sealing cover 3, piston rod 24 and sealing cover 3 are tightly connected and can be along the axial reciprocating of pump oil cylinder 5 cunnings
Dynamic, the idler wheel 25 and the upper end of piston rod 24 being arranged on foot-driven lever 19 are slidably matched；It is fixed on the piston rod 24 in 5 outside of pump oil cylinder
There is mounting plate 26, apical grafting has second spring 27 between mounting plate 26 and pump oil cylinder 5 or between pedestal 2, sets vertically in shoe cream room 4
It is equipped with the mandril 28 that upper end is fixed on 26 downside of mounting plate, is provided with the oil outlet being connected to lift cylinders 35 on pedestal 2
29, the valve 30 for avoiding oil liquid from flowing out is provided in oil outlet 29, when foot-driven lever 19 is floored, mandril 28 can follow installation
Plate 26 moves down and opens valve 30.This hydraulic pump when adjusting 36 height of lifting shaft, due to foot-driven lever 19 and piston rod 24 it
Between angle can rotate down and change with foot-driven lever 19, and the design of idler wheel 25 can then make whole process idler wheel 25 and living
The upper end of stopper rod 24 is all the same contact, avoids and generates friction between the two, keeps whole process more stable, gentle；The
The design of two springs 27 can make pump have piston homing after each pump oil, in pump oil cylinder 5 full of oil liquid, facilitate next pump
Oil, while also contributing to slowing down the speed of the decline of pump oil piston 6, keep the process of 6 pump oil of pump oil piston gentler, is conducive to mention
The stability and comfort of this high hydraulic pump；Further, the design of mandril 28 then can be when foot-driven lever 19 be floored, will
Valve 30 flows into the oil liquid in lift cylinders 35 in shoe cream room 4, lifting shaft 36 is moved down with the outflow of oil liquid, can to opening
The position that lifting shaft 36 is reset when 36 position of lifting shaft is excessively high, restarts to adjust.
As illustrated in figs. 2-7, between fuel feed hole 16, pump oil cylinder 5, cushion dashpot 7, valve pool 12, lift cylinders 35 and oil outlet 29
The pipeline 31 being arranged in pedestal 2 is passed sequentially through to be connected to.Above-mentioned pipeline 31 straight forming, producer when producing pedestal 2
Just, while assembly and connecting pipe 31 are also eliminated, simplify mounting process, improves the production efficiency of this hydraulic pump,
And directly built-in pipeline 31, stability is higher, is not in that pipeline 31 ruptures lamp problem；Lifting groove is provided on pedestal 2
32, dashpot 33 and pump oil slot 34, the outer wall of 35 lower end of lift cylinders and the cell wall of lifting groove 32 are sealed and are fixed, under cushion dashpot 7
It holds the cell wall of the outer wall and dashpot 33 with opening and 7 lower end of cushion dashpot to seal to fix, the outer wall and pump of 5 lower end of pump oil cylinder
The cell wall of oil groove 34, which seals, to be fixed.The design of lifting groove 32, dashpot 33 and pump oil slot 34 not only contributes to installation lift cylinders
35, cushion dashpot 7 and pump oil cylinder 5 are also helped and are connected to by the pipeline 31 being built on pedestal 2 to all parts, are improved
The stability of this hydraulic pump.
This hydraulic pump is provided with cushion dashpot 7 in shoe cream room 4, and when work, the oil liquid in pump oil cylinder 5 is squeezed by pump oil piston 6
It is pressed into cushion dashpot 7 and is located in the cavity of resorption 38 of cushion dashpot 7, the oil liquid into 7 cavity of resorption 38 of cushion dashpot pushes damper piston 8 mobile
And the first spring 9 is compressed, while part oil liquid enters in the lift cylinders 35 being connected to cushion dashpot 7 also by pipeline 31, will go up and down
Axis 36 jacks up, and damper piston 8 is gradually pushed back original position then as the first spring 9 in cushion dashpot 7, in 7 cavity of resorption 38 of cushion dashpot
Oil liquid be also injected into lift cylinders 35 slowly, it is lasting to jack up lifting shaft 36, further, above-mentioned first spring 9
Elastic force it is relatively strong and be constantly in compressive state, it is ensured that the oil liquid in cushion dashpot 7 can be smoothly pressed into liter by damper piston 8
It drops in cylinder 35, for whole process because of the buffering of cushion dashpot 7, the rising of lifting shaft 36 is more smooth, and wrong sense of not pausing improves
The stability and comfort of this hydraulic pump；In contrast above-mentioned epicoele 37 and cavity of resorption 38 only, in practical applications, delays
It rushes cylinder 7 and damper piston 8 is also possible to lateral setting, epicoele 37 and cavity of resorption 38 are left chamber and right chamber, one of chamber at this time
Be provided with the first spring 9 in vivo, the end face opposite with the first spring 9 respectively with the intracavity bottom of pump oil cylinder 5 and lift cylinders 35
Intracavity bottom connection.
Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this
It encloses, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by the protection of the utility model
Within the scope of.
Claims (10)
1. the hydraulic pump that one kind can gently be gone up and down, what the lower end of the pump housing and the pump housing including upper and lower ends opening was tightly connected
Pedestal, the sealing cover with the upper end sealed connection of the pump housing, the pump housing, pedestal and sealing cover surround to form shoe cream room, the storage
The lift cylinders of tubular and the pump oil cylinder of upper end opening, the lateral wall and seal cap sealing of lift cylinders upper end are vertically arranged in oil pocket
Fixed, the lower end of lift cylinders and pedestal sealing are fixed, and in-oil cylinder oil liquid can will be pumped by, which being provided in the pump oil cylinder, is expressed to
The pump oil piston of lift cylinders, which is characterized in that the cushion dashpot of both ends sealing is provided in the shoe cream room, sliding is set in cushion dashpot
It is equipped with damper piston and cushion dashpot inner cavity is divided into epicoele and cavity of resorption, upper intracavitary apical grafting has the first spring, the bottom difference of cavity of resorption
It is connected to the intracavity bottom of the intracavity bottom of pump oil cylinder and lift cylinders.
2. the hydraulic pump that one kind according to claim 1 can gently be gone up and down, it is characterised in that: the cushion dashpot and lifting
The regulating valve of control oil liquid flow is provided between cylinder.
3. the hydraulic pump that one kind according to claim 2 can gently be gone up and down, it is characterised in that: the regulating valve includes valve
Core and the valve pool being set on the base, the valve pool constitute fixed part and cylinder by stepped hole more than second level from opening to slot bottom
The throughput of shape, the outer end of the spool and fixed part are tightly connected, tapered of the inner end of spool, the taper platform of control valve core
In the axial internal clearance controllable flow rate of throughput, the intracavity bottom of the throughput one end and cushion dashpot far from fixed part connects
Logical, the fixed part is connected to close to the end of throughput with the intracavity bottom of lift cylinders.
4. the hydraulic pump that one kind according to claim 1 can gently be gone up and down, it is characterised in that: be provided on the pedestal
The fuel feed hole being connected to shoe cream room, the intracavity bottom of the pump oil cylinder are provided with the liquid that goes out being connected to cushion dashpot intracavity bottom and lead to
Road, is provided with the first check valve for avoiding oil liquid from flowing back into pump oil cylinder from cushion dashpot on liquid outlet channel, shoe cream room and pump oil cylinder
Intracavity bottom is provided with interconnected oil inlet passage, is provided in oil inlet passage and oil liquid is avoided to flow back into shoe cream room from pump oil cylinder
Second one-way valve.
5. the hydraulic pump that one kind according to claim 1 or 2 or 3 or 4 can gently be gone up and down, it is characterised in that: the liquid
Press pump includes foot-driven lever, and the foot-driven lever and sealing cover are articulated and connected by articulated shaft, the front end of the foot-driven lever and articulated shaft
It is vertical fixed, the latch segment of restricted lifting shaft sliding is set between the middle part and lifting shaft of the articulated shaft.
6. the hydraulic pump that one kind according to claim 5 can gently be gone up and down, it is characterised in that: the left side of the latch segment
The first C-shaped channel is provided on face along the vertical direction, the cell wall of first C-shaped channel and the lateral wall of lifting shaft cooperate, the lock
Be horizontally arranged with the second C-shaped channel on the right side of tight block, the articulated shaft is eccentric shaft, the cell wall of second C-shaped channel against
On the lateral wall of the articulated shaft, the latch segment be clamped between lifting shaft and articulated shaft and can with foot-driven lever to
It is lower rotation and unclamp.
7. the hydraulic pump that one kind according to claim 5 can gently be gone up and down, it is characterised in that: the pump oil piston it is upper
End is connected with piston rod, and the upper end of the piston rod is stretched out through sealing cover and from the upper end of sealing cover, the piston rod with it is close
Lidstock is connected and can be slided along the axial reciprocating of pump oil cylinder, the upper end of the idler wheel and piston rod that are arranged on the foot-driven lever
It is slidably matched.
8. the hydraulic pump that one kind according to claim 7 can gently be gone up and down, it is characterised in that: on the outside of the pump oil cylinder
Mounting plate is fixed on piston rod, apical grafting has second spring, the shoe cream room between mounting plate and pump oil cylinder or between pedestal
Inside be vertically arranged with the mandril that upper end is fixed on mounting plate downside, be provided on the pedestal be connected to lift cylinders it is fuel-displaced
Hole is provided with the valve for avoiding oil liquid from flowing out in the oil outlet, and when foot-driven lever is floored, the mandril can follow installation
Plate moves down and opens valve.
9. the hydraulic pump that one kind according to claim 3 can gently be gone up and down, it is characterised in that: be provided on the pedestal
The fuel feed hole being connected to shoe cream room and the oil outlet being connected to lift cylinders, the fuel feed hole, pump oil cylinder, cushion dashpot, valve pool, liter
The pipeline connection being arranged in pedestal is passed sequentially through between drop cylinder and oil outlet.
10. the hydraulic pump that one kind according to claim 1 can gently be gone up and down, it is characterised in that: be arranged on the pedestal
There are lifting groove, dashpot and pump oil slot, the outer wall of the lift cylinders lower end and the cell wall of lifting groove are sealed and fixed, the cushion dashpot
Lower end have opening and cushion dashpot lower end outer wall and dashpot cell wall seal fix, the outer wall of pump oil cylinder lower end
It seals and fixes with the cell wall of pump oil slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721159262.8U CN208610247U (en) | 2017-09-11 | 2017-09-11 | A kind of hydraulic pump that can gently go up and down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721159262.8U CN208610247U (en) | 2017-09-11 | 2017-09-11 | A kind of hydraulic pump that can gently go up and down |
Publications (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI688540B (en) * | 2019-04-03 | 2020-03-21 | 吳竣賢 | Widener |
| CN111498726A (en) * | 2020-05-29 | 2020-08-07 | 嘉兴市大通机械股份有限公司 | Manual pressing type jack for rehabilitation hanger columnar structure |
| CN111779785A (en) * | 2020-06-16 | 2020-10-16 | 宁波一力减震器有限公司 | Portable pressure-adjustable lifting column |
| TWI707819B (en) * | 2019-04-03 | 2020-10-21 | 吳竣賢 | Widener |
-
2017
- 2017-09-11 CN CN201721159262.8U patent/CN208610247U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI688540B (en) * | 2019-04-03 | 2020-03-21 | 吳竣賢 | Widener |
| TWI707819B (en) * | 2019-04-03 | 2020-10-21 | 吳竣賢 | Widener |
| CN111498726A (en) * | 2020-05-29 | 2020-08-07 | 嘉兴市大通机械股份有限公司 | Manual pressing type jack for rehabilitation hanger columnar structure |
| CN111779785A (en) * | 2020-06-16 | 2020-10-16 | 宁波一力减震器有限公司 | Portable pressure-adjustable lifting column |
| CN111779785B (en) * | 2020-06-16 | 2022-05-10 | 宁波一力减震器有限公司 | Portable pressure-adjustable lifting column |
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