CN208829175U - The unloaded fast falling unit of the slow drop of the load of hydraulic jack - Google Patents
The unloaded fast falling unit of the slow drop of the load of hydraulic jack Download PDFInfo
- Publication number
- CN208829175U CN208829175U CN201821211244.4U CN201821211244U CN208829175U CN 208829175 U CN208829175 U CN 208829175U CN 201821211244 U CN201821211244 U CN 201821211244U CN 208829175 U CN208829175 U CN 208829175U
- Authority
- CN
- China
- Prior art keywords
- oil
- cavity
- hydraulic jack
- load
- throttle valve
- 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.)
- Active
Links
Landscapes
- Actuator (AREA)
Abstract
The utility model provides a kind of unloaded fast falling unit of the slow drop of load of hydraulic jack, belongs to technical field of jacks.The unloaded fast falling unit of the slow drop of the load of this hydraulic jack, the hydraulic jack includes master cylinder and the secondary cylinder that is arranged in outside master cylinder, it is characterized in that, the unloaded fast falling unit setting of the slow drop of this heavy duty is between master cylinder and secondary cylinder, including pedestal, oil input channel and back oil road are offered on pedestal, it is connected between oil input channel and back oil road by pressure releasing passages, cavity one is equipped between oil input channel and pressure releasing passages, throttle valve is provided in cavity one, throttling oil duct is offered on throttle valve, the side of throttle valve is provided with nylon pressing ring, the other side is provided with reset spring, cavity two is equipped between back oil road and pressure releasing passages, steel ball is provided in cavity two, oil return valve and steel ball are connected, the outer end of oil return valve is fixed with oil return switch.The utility model can make oil jack withstand on bear under load realize weight lifting disk slowly decline, under no-load realize weight lifting disk rapid decrease.
Description
Technical field
The utility model belongs to technical field of jacks, is related to a kind of hydraulic jack, especially a kind of hydraulic jack
The unloaded fast falling unit of the slow drop of load.
Background technique
Jack be it is a kind of use rigidity top lift part as equipment, pushed up in stroke by top bracket or bottom claw
Rise the light and small lifting equipment of weight.Jack be mainly used for the departments such as factories and miness, communications and transportation as Mechanical Help and other liftings,
The work such as support.Its light structure is firm, flexibility and reliability, and a people can carry and operate.It, which is that a kind of lifting height is small, (is less than
Simplest lifting equipment 1m).
Jack has mechanical and two kinds of fluid pressure type, and principle is had nothing in common with each other.In principle, hydraulic jack is based on
Principle be pascal's principle, it may be assumed that the pressure of liquid everywhere is consistent, in this way, in the system of balance, smaller piston
The pressure applied above is smaller, and the pressure applied on big piston is also bigger, is able to maintain the static of liquid in this way；Institute
With by the transmitting of liquid, different pressure on available difference ends thus can achieve the purpose of a transformation.I
It is common to hydraulic jack be exactly the transmitting that this principle is utilized to reach power.Mechanic jacks are using mechanical former
Reason, back and forth to pull handle, pusher dog pushes the revolution of ratchet gap, and cone pinion drives large bevel gear, rotates weight lifting screw rod,
To make jacking sleeve obtain raising or decline, and reach the function of lifting pulling force；It is simple not as good as hydraulic jack.
Hydraulic jack can be divided into vertical and horizontal again, and vertical hydraulic jack and Horizontal hydraulic jack are weight lifting
One of the most common type tool in tool is especially indispensable tool in motor repair trade, brings not to operator
It is few convenient.
In the prior art, jack is that comparison is slow during weight lifting, needs for the oil in secondary cylinder to be slowly passed through
Into master cylinder, so that weight lifting pan arrest be risen；And be that comparison is quick in jack reseting procedure, the oil in master cylinder can be rapid
It flows back into secondary cylinder, to make weight lifting disk rapid decrease.When hydraulic jack jacks up weight, if lead weight rapid decrease can
Weight and ground instantaneous touch are caused, causes ground or weight by different degrees of damage.For this technical problem, if energy
Enough make weight that can play slow drop during decline, and weight lifting disk made to realize rapid decrease again after weight and ground face contact,
Many conveniences can be undoubtedly brought to operator, meanwhile, also ground or weight will not be made to be damaged.
So facing the deficiencies in the prior art, it need to improve hydraulic jack in the prior art, so that oil pressure
Jack is with more flexible and safe.
Utility model content
The purpose of this utility model is the presence of the above problem in view of the prior art, proposes a kind of bearing for hydraulic jack
The unloaded fast falling unit of slow drop is carried, technical problem to be solved in the utility model is how to realize that oil jack is withstood on to be loaded with load
The slow decline that weight lifting disk is realized under situation, realizes the rapid decrease of weight lifting disk under unloaded condition.
The purpose of this utility model can be realized by the following technical scheme: the unloaded fast drop of the slow drop of the load of hydraulic jack
Device, the hydraulic jack include master cylinder and the secondary cylinder that is arranged in outside master cylinder, are provided with piston rod in the master cylinder,
The end of piston rod is fixed with weight lifting disk, which is characterized in that the unloaded fast falling unit setting of the slow drop of this heavy duty master cylinder and secondary cylinder it
Between, including pedestal, the back oil road for offering the oil input channel being connected to master cylinder and being connected to secondary cylinder on the pedestal, oil input channel and
It is connected between back oil road by pressure releasing passages, is equipped between the oil input channel and pressure releasing passages for being connected to or blocking in oil input channel
The cavity one that oil is flowed to pressure releasing passages is provided with throttle valve in the cavity one, is offered on throttle valve for slow oil return
Throttling oil duct, the side of throttle valve is provided with nylon pressing ring, and relative motion can occur in cavity one for throttle valve, throttling
The other side of valve is provided with reset spring；It is equipped between the back oil road and pressure releasing passages for being connected to or blocking in pressure releasing passages
The cavity two that oil is flowed to back oil road, be provided in the cavity two oil return valve that can be connected to or block back oil road import and
The steel ball that can be connected to or block pressure releasing passages to export, the oil return valve and steel ball are connected, and the outer end of oil return valve is fixed with oil return
Switch.
The unloaded fast falling unit of the slow drop of the heavy duty of this hydraulic jack, its working principle is that such: when jack is completed to lift
It when needing to be reset again, needs to decline weight lifting disk, needs to make the oil in master cylinder to move to secondary cylinder at this time, specifically, working as weight lifting disk
On when bearing load, open oil return switch, the pressure of oil pressure to cavity one in master cylinder is larger, and throttle valve can pressed home spring
And it is bonded throttle valve and the bottom wall of cavity one, it at this time can't be by throttle valve and one bottom of cavity by the oil that master cylinder push comes
Gap between wall flows to pressure releasing passages, but flows to pressure releasing passages by the throttling oil duct on throttle valve, due to the oil duct diameter that throttles
Smaller, it is slow that oil from throttling oil duct flows to pressure releasing passages speed, slow so as to cause the decline of weight lifting disk；When not negative load on weight lifting disk
When, open oil return switch, the pressure of oil pressure to cavity one in master cylinder is smaller, throttle valve because squeeze motionless reset spring without
It is bonded throttle valve and the bottom wall of cavity one, it at this time can be by between one bottom wall of throttle valve and cavity by the oil that master cylinder push comes
Space rapidly flow toward pressure releasing passages, to make weight lifting disk rapid decrease, slow drop when load is withstood on which achieves oil jack
With the rapid decrease in zero load.
Delay in the unloaded fast falling unit of drop in the heavy duty of above-mentioned hydraulic jack, is offered on the pedestal and cavity one
The spring mounting groove being connected, the reset spring is arranged in spring mounting groove, and one end of reset spring is resisted against bullet
The other end of the bottom of spring mounting groove, reset spring is resisted against on throttle valve.
Delay in the unloaded fast falling unit of drop in the heavy duty of above-mentioned hydraulic jack, offers one in the spring mounting groove
Discharge orifice is bolted with the stifled screw of oil in the discharge orifice.
Delay in the unloaded fast falling unit of drop in the heavy duty of above-mentioned hydraulic jack, the inner wall of the oil return valve and cavity two
Between be provided with O-ring seal.
Delay in the unloaded fast falling unit of drop in the heavy duty of above-mentioned hydraulic jack, the nylon pressing ring passes through tight fit
Mode is arranged in cavity one.
Delay in the unloaded fast falling unit of drop in the heavy duty of above-mentioned hydraulic jack, the depth of the cavity one is greater than nylon
The sum of pressing ring and the height of throttle valve.
Delay in the unloaded fast falling unit of drop in the heavy duty of above-mentioned hydraulic jack, the diameter of the throttling oil duct is 0.3-
0.5mm。
Compared with prior art, the utility model has the advantage that
1, when bearing load on the weight lifting disk of hydraulic jack, oil return switch is opened, the oil pressure in master cylinder is to cavity one
Pressure it is larger, throttle valve can pressed home spring simultaneously be bonded throttle valve and the bottom wall of cavity one, pushed at this time by master cylinder
The oil come can't flow to pressure releasing passages by the gap between one bottom wall of throttle valve and cavity, but pass through the throttling on throttle valve
Oil duct flows to pressure releasing passages, and since throttling oil duct diameter is 0.3-0.5mm, it is slow that oil from throttling oil duct flows to pressure releasing passages speed, from
And cause the decline of weight lifting disk slow.
2, when not negative load on the weight lifting disk of hydraulic jack, oil return switch is opened, the oil pressure in master cylinder is to cavity one
Pressure it is smaller, throttle valve is because squeezing motionless reset spring without being bonded throttle valve and the bottom wall of cavity one, at this time by leading
The oil that cylinder push comes can rapidly flow toward pressure releasing passages by the space between one bottom wall of throttle valve and cavity, to keep weight lifting disk fast
Speed decline.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the enlarged structure schematic diagram of A in Fig. 1.
In figure, 1, pedestal；2, oil input channel；3, back oil road；4, pressure releasing passages；5, throttle valve；5a, throttling oil duct；6, nylon pressure
Circle；7, reset spring；8, oil return valve；9, steel ball；10, oil return switchs；11, spring mounting groove；12, the stifled screw of oil；13, O-shaped
Sealing ring.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 1, a kind of hydraulic jack is provided in master cylinder including master cylinder and the secondary cylinder being arranged in outside master cylinder
Piston rod, the end of piston rod are fixed with weight lifting disk, by the way that the oil pressure in secondary cylinder to master cylinder, so that piston rod be made to stretch out, is lived
The weight lifting disk of stopper rod end is raised above；On the contrary, by the way that the oil in master cylinder is back to secondary cylinder, so that piston rod is retracted, it is living
The weight lifting disk of stopper rod end resets downwards, realizes the working principle of hydraulic jack.
As illustrated in fig. 1 and 2, the unloaded fast falling unit of the slow drop of a kind of load of hydraulic jack, setting master cylinder and secondary cylinder it
Between, including pedestal 1 offers the oil input channel 2 being connected to master cylinder and the back oil road being connected to secondary cylinder 3,2 He of oil input channel on pedestal 1
It is connected between back oil road 3 by pressure releasing passages 4.It is equipped between oil input channel 2 and pressure releasing passages 4 for being connected to or blocking in oil input channel 2
The cavity one that is flowed to pressure releasing passages 4 of oil, be provided with throttle valve 5 in cavity one, offered on throttle valve 5 for slow oil return
Throttle oil duct 5a, and the diameter of throttling oil duct 5a is 0.4mm.The side of throttle valve 5 is provided with nylon pressing ring 6, and nylon pressing ring 6 passes through
The mode of tight fit is arranged in cavity one, and relative motion can occur in cavity one for throttle valve 5, throttle valve 5 it is another
Side is provided with reset spring 7.The spring mounting groove 11 being connected with cavity one is offered on pedestal 1, reset spring 7 is arranged in bullet
In spring mounting groove 11, and one end of reset spring 7 is resisted against the bottom of spring mounting groove 11, the other end of reset spring 7 against
On throttle valve 5, a discharge orifice is offered in spring mounting groove 11, and the stifled screw 12 of oil is bolted in discharge orifice.In back oil road 3
It is equipped with the cavity two for being connected to or blocking the oil in pressure releasing passages 4 to flow to back oil road 3 between pressure releasing passages 4, is set in cavity two
It is equipped with the steel ball 9 that can be connected to or block the oil return valve 8 of 3 import of back oil road and can be connected to or block pressure releasing passages 4 to export, oil return
Valve 8 and steel ball 9 are connected, and the outer end of oil return valve 8 is fixed with oil return switch 10, is provided with O between oil return valve 8 and the inner wall of cavity two
Type sealing ring 13, prevents oil from leaking.
In the present embodiment, the depth of cavity one is greater than the sum of nylon pressing ring 6 and the height of throttle valve 5.Specifically, nylon
The height of pressing ring 6 is 3mm, and the height of throttle valve 5 is 9mm, and the depth of cavity one is 15mm.One end and nylon when throttle valve 5
When pressing ring 6 contacts, the space of 3mm height is had between the other end of throttle valve 5 and the bottom wall of cavity one, fuel feeding, which flows back into, to be let out
Press road 4；And when the other end of throttle valve 5 is bonded with the bottom wall of cavity one, oil no longer from the bottom wall of throttle valve 5 and cavity one it
Between space flow back into pressure releasing passages 4, but pressure releasing passages 4 are uniformly flowed by the oil duct 5a that throttles.
The unloaded fast falling unit of the slow drop of the heavy duty of this hydraulic jack, its working principle is that such: when jack is completed to lift
It when needing to be reset again, needs to decline weight lifting disk, needs to make the oil in master cylinder to move to secondary cylinder at this time, specifically, working as weight lifting disk
On when bearing load, open oil return switch 10, the pressure of oil pressure to cavity one in master cylinder is larger, and throttle valve 5 understands pressed home
Spring 7 is simultaneously bonded throttle valve 5 and the bottom wall of cavity one, at this time by the oil that comes of master cylinder push can't by throttle valve 5 with
Gap between one bottom wall of cavity flows to pressure releasing passages 4, but flows to pressure releasing passages 4 by the throttling oil duct 5a on throttle valve 5, due to
The oil duct 5a diameter that throttles is smaller, and it is slow that oil from throttling oil duct 5a flows to 4 speed of pressure releasing passages, slow so as to cause the decline of weight lifting disk；
When not negative load on weight lifting disk, open oil return switch 10, the pressure of oil pressure to cavity one in master cylinder is smaller, throttle valve 5 because
Motionless reset spring 7 is squeezed without being bonded throttle valve 5 and the bottom wall of cavity one, can be led to by the oil that master cylinder push comes at this time
The space crossed between one bottom wall of throttle valve 5 and cavity rapidly flows toward pressure releasing passages 4, to make weight lifting disk rapid decrease, this is just realized
Slow drop when oil jack withstands on load and rapid decrease in zero load.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although 1, pedestal is used more herein；2, oil input channel；3, back oil road；4, pressure releasing passages；5, throttle valve；5a, section
Flow oil duct；6, nylon pressing ring；7, reset spring；8, oil return valve；9, steel ball；10, oil return switchs；11, spring mounting groove；12, oily
Stifled screw；13, the terms such as O-ring seal, but it does not exclude the possibility of using other terms.It the use of these terms is only to be
It is more convenient to describe and explain the essence of the utility model；Being construed as any additional limitation is all and this reality
It is disagreed with novel spirit.
Claims (7)
1. the unloaded fast falling unit of the slow drop of the load of hydraulic jack, the hydraulic jack include master cylinder and are arranged outside master cylinder
The secondary cylinder in portion is provided with piston rod in the master cylinder, and the end of piston rod is fixed with weight lifting disk, which is characterized in that this heavy duty
The slow unloaded fast falling unit setting of drop is between master cylinder and secondary cylinder, including pedestal, offers on the pedestal and to be connected to master cylinder
Oil input channel and the back oil road being connected to secondary cylinder are connected between oil input channel and back oil road by pressure releasing passages, the oil input channel with let out
It is equipped with the cavity one for being connected to or blocking the oil in oil input channel to flow to pressure releasing passages between pressure road, is arranged in the cavity one
There is throttle valve, the throttling oil duct for slow oil return is offered on throttle valve, the side of throttle valve is provided with nylon pressing ring, and saves
Relative motion can occur in cavity one for stream valve, and the other side of throttle valve is provided with reset spring；The back oil road with let out
It is equipped with the cavity two for being connected to or blocking the oil in pressure releasing passages to flow to back oil road between pressure road, is arranged in the cavity two
The steel ball for having the oil return valve that can be connected to or block back oil road import and capable of being connected to or block pressure releasing passages to export, the oil return
Valve and steel ball are connected, and the outer end of oil return valve is fixed with oil return switch.
2. the unloaded fast falling unit of the slow drop of the load of hydraulic jack according to claim 1, which is characterized in that the base
The spring mounting groove being connected with cavity one is offered on seat, the reset spring is arranged in spring mounting groove, and resets
One end of spring is resisted against the bottom of spring mounting groove, and the other end of reset spring is resisted against on throttle valve.
3. the unloaded fast falling unit of the slow drop of the load of hydraulic jack according to claim 2, which is characterized in that the bullet
A discharge orifice is offered in spring mounting groove, and the stifled screw of oil is bolted in the discharge orifice.
4. the unloaded fast falling unit of the slow drop of the load of hydraulic jack according to claim 1 or 2 or 3, which is characterized in that institute
O-ring seal is provided between the oil return valve stated and the inner wall of cavity two.
5. the unloaded fast falling unit of the slow drop of the load of hydraulic jack according to claim 1 or 2 or 3, which is characterized in that institute
The nylon pressing ring stated is arranged in cavity one by way of tight fit.
6. the unloaded fast falling unit of the slow drop of the load of hydraulic jack according to claim 1 or 2 or 3, which is characterized in that institute
The depth for the cavity one stated is greater than the sum of nylon pressing ring and the height of throttle valve.
7. the unloaded fast falling unit of the slow drop of the load of hydraulic jack according to claim 1 or 2 or 3, which is characterized in that institute
The diameter for the throttling oil duct stated is 0.3-0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821211244.4U CN208829175U (en) | 2018-07-27 | 2018-07-27 | The unloaded fast falling unit of the slow drop of the load of hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821211244.4U CN208829175U (en) | 2018-07-27 | 2018-07-27 | The unloaded fast falling unit of the slow drop of the load of hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208829175U true CN208829175U (en) | 2019-05-07 |
Family
ID=66307632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821211244.4U Active CN208829175U (en) | 2018-07-27 | 2018-07-27 | The unloaded fast falling unit of the slow drop of the load of hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208829175U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110255422A (en) * | 2019-06-12 | 2019-09-20 | 安徽通润汽车零部件有限公司 | A kind of oil return apparatus at a slow speed for jack |
| CN110902594A (en) * | 2019-12-13 | 2020-03-24 | 常熟通润汽车零部件股份有限公司 | Double-cylinder horizontal jack |
-
2018
- 2018-07-27 CN CN201821211244.4U patent/CN208829175U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110255422A (en) * | 2019-06-12 | 2019-09-20 | 安徽通润汽车零部件有限公司 | A kind of oil return apparatus at a slow speed for jack |
| CN110902594A (en) * | 2019-12-13 | 2020-03-24 | 常熟通润汽车零部件股份有限公司 | Double-cylinder horizontal jack |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201169513Y (en) | Pedal hydraulic double-speed and pneumatic idle load fast hoisting jack | |
| CN208829175U (en) | The unloaded fast falling unit of the slow drop of the load of hydraulic jack | |
| CN203939790U (en) | The reciprocal supercharging device of twin-tub | |
| CN204729245U (en) | A kind of double piston manual variable capacity oil pump | |
| US20200400166A1 (en) | Load-adjusting quick oil cylinder and hydraulic lifting device | |
| CN207827749U (en) | A kind of hydraulic jack of fast lifting | |
| US1611703A (en) | Jack | |
| CN208900436U (en) | A kind of gas source hydraulic press | |
| CN202704930U (en) | High-thrust jack | |
| CN212356379U (en) | Portable jack for automobile maintenance | |
| CN103738877A (en) | Hydraulic jack | |
| CN104632740A (en) | Overflow valve and application thereof | |
| CN106257051A (en) | A kind of single cylinder bidirectional continuity plunger displacement pump | |
| CN207061744U (en) | Lifting body with function of increasing pressure | |
| CN209483568U (en) | A kind of gas-liquid booster pump | |
| CN209638751U (en) | A kind of pressurization air-operated lubricating pump | |
| CN202785462U (en) | Hydraulic jack | |
| Suryawanshi et al. | Design and fabrication of hydraulic bearing puller and pusher | |
| CN206386330U (en) | A kind of Explosion proof joint component and its elevating ram | |
| CN205772619U (en) | Hydraulic damper for elevator | |
| US3012403A (en) | Hydraulic jack | |
| CN201777823U (en) | Hydraulic jack suitable for narrow space | |
| CN110304574A (en) | The slow drop jack of vertical oil pressure | |
| US9617129B2 (en) | Hydraulic pumping cylinder and method of pumping hydraulic fluid | |
| CN106545540B (en) | The lifting gear of the fuel feeding Fuel Tanking Unit and forklift seat cover board of hydraulic cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 314200 No. 186, Jiulong Road, Caoqiao Street, Pinghu City, Jiaxing City, Zhejiang Province Patentee after: Jiaxing jinrisheng Tools Co.,Ltd. Address before: No. 186, Jiulong Road, Caoqiao street, Pinghu City, Jiaxing City, Zhejiang Province Patentee before: JIAXING JINRISHENG TOOLS Co.,Ltd. |
|
| CP03 | Change of name, title or address |