CN209081324U - Integrated form hydraulic jack - Google Patents

Abstract

The utility model provides a kind of integrated form hydraulic jack, belongs to technical field of jacks.This integrated form hydraulic jack, including pedestal, master cylinder and the secondary cylinder being arranged in outside master cylinder, the piston rod for being provided with piston in master cylinder and being connected with piston, the upper end of piston rod is fixed with weight lifting disk, it is characterized in that, this integrated form hydraulic jack further includes the pedestal being detachably arranged on pedestal, the first oil inlet and the first oil outlet are offered on pedestal, second oil outlet, second oil inlet and oil return opening, the lower end of first oil inlet is connected with the lower end of the second oil outlet by oil inlet passage, oil inlet passage is also connected to pedestal, oil pump component is provided on pedestal, the lower end of first oil outlet is communicated with interface channel, drainback passage and exit passageway have been respectively communicated on interface channel, drainback passage is connected to the return port from pedestal detour, exit passageway is connected from pedestal detour with the second oil inlet.The utility model has the advantages that be conducive to remove and install to replace.

Description

Integrated form hydraulic jack

Technical field

The utility model belongs to technical field of jacks, is related to a kind of hydraulic jack, especially a kind of integrated form oil pressure Jack.

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.If there is the blocking of jack internal galleries, need to dredge jack Logical oil liquid.If there is the damage of jack inner body, needs to dismantle jack overall structure and repair, especially jack Internal sealing ring, steel ball and spring etc. goes wrong, and needs to replace in time.But jack in the prior art, in replacement Part needs in portion's remove entire jack, very cumbersome since its part is more.So not in face of the prior art Foot, need to improve hydraulic jack in the prior art, so that hydraulic jack removes and installs more convenient, replacement Part is more convenient.

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 integrated form oil jack Top, technical problem to be solved in the utility model is how to realize that the integrated form of hydraulic jack is detachably arranged, and is conducive to dimension Repair, replace and clean components.

The purpose of this utility model can be realized by the following technical scheme: integrated form hydraulic jack, including pedestal, master Cylinder and the secondary cylinder being arranged in outside master cylinder, the master cylinder and secondary cylinder are each attached on pedestal, are provided with work in the master cylinder Plug and the piston rod being connected with piston, the upper end of piston rod are fixed with weight lifting disk, which is characterized in that this integrated form hydraulic jack Further include the pedestal being detachably arranged on pedestal, the first oil inlet being connected with master cylinder and are offered on the pedestal One oil outlet, the second oil outlet, the second oil inlet and the oil return opening being connected with secondary cylinder, the lower end of first oil inlet and the The lower end of two oil outlets is connected by oil inlet passage, and is provided in the first oil inlet and is used to open and blocks in oil inlet passage Oily single flow direction master cylinder check valve, the oil inlet passage is also connected to pedestal, and pair can be made by being provided on the pedestal Oil in cylinder passes through the oil pump component that oil inlet passage is flowed into master cylinder, and it is logical that the lower end of first oil outlet is communicated with connection Road has been respectively communicated with drainback passage and exit passageway on interface channel, and drainback passage is connected to the return port from pedestal detour, and returns It is provided between oily channel and interface channel and is used to open and blocks switch valve of the oil stream in interface channel to drainback passage, pacified Full tunnel is connected from pedestal detour with the second oil inlet, and is provided between exit passageway and interface channel and is used to open and hinders The safety valve of oil stream in connection breaking channel to exit passageway.

The lifting process of this integrated form hydraulic jack is as follows: by manually controlling oil pump component, allow oil in secondary cylinder by Begin to flow into the first oil inlet in master cylinder from the second oil outlet in secondary cylinder in atmospheric pressure principle, thus oil liquid from first into Hydraulic fluid port enters in master cylinder, and oil liquid pushes piston, piston rod and the weight lifting disk in master cylinder, and weight is held up；At this point, switch valve and peace Full valve is all to close, so oil liquid is merely able to be stored in master cylinder, to play a supporting role to weight, completes the act of weight It rises.

The decline process of this integrated form hydraulic jack is as follows: valve is turned on the switch, under the self gravity of weight and oil liquid, Oil liquid flows back since the first oil outlet in master cylinder, and under the action of interface channel and drainback passage, oil liquid is back to secondary cylinder In oil return opening until in secondary cylinder, piston rod and the decline of weight lifting disk in master cylinder discharge weight；At this point, since oil pump does not have work Make, the oil in secondary cylinder will not be entered to actively in master cylinder, and safety valve is to close, so oil liquid is only when turning on the switch valve It can be moved from master cylinder by drainback passage to secondary cylinder, decline weight, complete the release of weight.

The overloading of this integrated form hydraulic jack is as follows: by manually controlling oil pump component, allow oil in secondary cylinder by Begin to flow into the first oil inlet in master cylinder from the second oil outlet in secondary cylinder in atmospheric pressure principle, thus oil liquid from first into Hydraulic fluid port enters in master cylinder；Under the action of interface channel and exit passageway, since the weight on weight lifting disk is overweight, at this point, oil liquid Master cylinder can be flowed through up to the first oil outlet, then safety valve is opened by interface channel, the second oil inlet is flow to by exit passageway Until not playing castering action to weight in secondary cylinder, completion carries out overload protection to it.

In above-mentioned integrated form hydraulic jack, emptying channel, the emptying are communicated on the interface channel Channel is arranged on the base, and emptying is provided with oil drain valve in channel.Emptying channel is conducive to replace the oil liquid in oil pump.

In above-mentioned integrated form hydraulic jack, the oil pump component includes pump core and foot-driven lever, the pump core It is arranged in oil inlet passage, the foot-driven lever is hingedly connected on the base and with pump core.Under the action of foot-driven lever, can between Having a rest property opens the pump core in oil inlet passage, so that the oil liquid in secondary cylinder is injected into master cylinder.

In above-mentioned integrated form hydraulic jack, the check valve include be arranged in oil inlet passage can by first into The steel ball one and spring one that hydraulic fluid port is blocked, one end of spring one and steel ball one are connected, the other end of spring one and oil inlet passage One side wall is connected.

In above-mentioned integrated form hydraulic jack, interface channel and oil return can be led to by being provided on the switch valve The steel ball two and spring two that the connector in road is blocked, one end of spring two and steel ball two are connected, the other end and switch of spring two Valve is connected.

In above-mentioned integrated form hydraulic jack, being provided on the safety valve can be logical by interface channel and safety Steel ball three is withstood in the steel ball three and torsional spring that the connector in road is blocked, one end of torsional spring, and the other end of torsional spring is set on safety valve.

In above-mentioned integrated form hydraulic jack, connected between the pedestal and pedestal by bolt and nut, and Seal washer is provided between pedestal and pedestal.Disassembly between pedestal and pedestal is conducive to using bolt and nut connection, and it is close Seal washer advantageously ensures that sealing performance between the two.

In above-mentioned integrated form hydraulic jack, the pedestal is L-shaped.

Compared with prior art, the utility model has the advantage that

1, the utility model is by manually controlling oil pump component, allows the oil in secondary cylinder since atmospheric pressure principle is from secondary cylinder The second oil outlet flow into master cylinder in the first oil inlet until master cylinder in, oil liquid push master cylinder in piston, piston rod and act Disk again holds up weight.

2, the utility model is after turning on the switch valve, and under the self gravity of weight and oil liquid, oil liquid is from master cylinder One oil outlet starts to flow back, the oil return opening for being back to oil liquid in secondary cylinder by interface channel and drainback passage until in secondary cylinder, Piston rod and the decline of weight lifting disk in master cylinder, discharge weight.

3, the utility model is by manually controlling oil pump component, allows the oil in secondary cylinder since atmospheric pressure principle is from secondary cylinder The second oil outlet flow into master cylinder in the first oil inlet until master cylinder in, since the weight on weight lifting disk is overweight, oil liquid can flow Through master cylinder until the first oil outlet, then safety valve opened by interface channel, by exit passageway flow to the second oil inlet up to In secondary cylinder, castering action is not played to weight, completion carries out overload protection to it.

4, the utility model is connect using pedestal with pedestal, while oil pump component, drainback passage and exit passageway pass through Pedestal is conducive to removing and installing for entire jack.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Fig. 2 is the structural schematic diagram of the utility model in the base.

In figure, 1, pedestal；2, master cylinder；3, secondary cylinder；4, pedestal；5, the first oil inlet；6, the first oil outlet；7, second is fuel-displaced Mouthful；8, the second oil inlet；9, oil return opening；10, oil inlet passage；11, interface channel；12, drainback passage；13, exit passageway.

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, integrated form hydraulic jack, main including pedestal 1, master cylinder 2 and the secondary cylinder 3 being arranged in outside master cylinder 2 Cylinder 2 and secondary cylinder 3 are each attached on pedestal 1, the piston rod that piston is provided in master cylinder 2 and is connected with piston, the upper end of piston rod It is fixed with weight lifting disk.

As illustrated in fig. 1 and 2, this integrated form hydraulic jack further includes the pedestal 4 being detachably arranged on pedestal 1, pedestal 4 It is L-shaped, it is connected, and be provided with seal washer between pedestal 1 and pedestal 4, is adopted by bolt and nut between pedestal 1 and pedestal 4 Be conducive to the disassembly between pedestal 1 and pedestal 4 with bolt and nut connection, and seal washer advantageously ensures that sealing between the two Performance.Second for offering the first oil inlet 5 being connected with master cylinder 2 and the first oil outlet 6 on pedestal 1, being connected with secondary cylinder 3 Oil outlet 7, the second oil inlet 8 and oil return opening 9.

The lower end of first oil inlet 5 is connected with the lower end of the second oil outlet 7 by oil inlet passage 10, and the first oil inlet The check valve for being used to open and blocking the oily single flow direction master cylinder 2 in oil inlet passage 10 is provided in 5, oil inlet passage 10 is also connected to Pedestal 4, being provided on pedestal 4 can make the oil in secondary cylinder 3 pass through the oil pump component that oil inlet passage 10 is flowed into master cylinder 2.Unidirectionally Valve includes that the steel ball one and spring one that can block the first oil inlet 5 in oil inlet passage 10, one end of spring one and steel is arranged in Ball one is connected, and the other end of spring one and the one side wall of oil inlet passage 10 are connected.Oil pump component includes pump core and foot-driven lever, described Pump core be arranged in oil inlet passage 10, the foot-driven lever is hinged on pedestal 4 and is connected with pump core.In the effect of foot-driven lever Under, can the intermittent pump core opened in oil inlet passage 10, so that the oil liquid in secondary cylinder 3 is injected into master cylinder 2.

The lower end of first oil outlet 6 is communicated with interface channel 11, and emptying channel, emptying channel are communicated on interface channel 11 It is arranged on pedestal 4, emptying is provided with oil drain valve in channel.Emptying channel is conducive to replace the oil liquid in oil pump.

Drainback passage 12 is communicated on interface channel 11, drainback passage 12 is connected to from 4 detour of pedestal with oil return opening 9, and is returned Being provided between oily channel 12 and interface channel 11 is used to open and blocks the oil stream in interface channel 11 to drainback passage 12 Switch valve.The steel ball two and spring that the connector of interface channel 11 and drainback passage 12 can be blocked are provided on switch valve Two, one end of spring two and steel ball two are connected, and the other end and switch valve of spring two are connected.

Exit passageway 13 is also communicated on interface channel 11, exit passageway 13 is connected from 4 detour of pedestal with the second oil inlet 8 It is logical, and be provided between exit passageway 13 and interface channel 11 and be used to open and block the oil stream in interface channel 11 logical to safety The safety valve in road 13.Be provided on safety valve the steel ball three that the connector of interface channel 11 and exit passageway 13 can be blocked and Steel ball three is withstood in torsional spring, one end of torsional spring, and the other end of torsional spring is set on safety valve.

The lifting process of this integrated form hydraulic jack is as follows: by manually controlling oil pump component, allow oil in secondary cylinder 3 by The first oil inlet 5 in master cylinder 2 is begun to flow into from the second oil outlet 7 in secondary cylinder 3 in atmospheric pressure principle, so oil liquid is from One oil inlet 5 enters in master cylinder 2, and oil liquid pushes piston, piston rod and the weight lifting disk in master cylinder 2, and weight is held up；At this point, opening Closing valve and safety valve all is closing, so oil liquid is merely able to be stored in master cylinder 2, thus play a supporting role to weight, it is complete At the lifting of weight.

The decline process of this integrated form hydraulic jack is as follows: valve is turned on the switch, under the self gravity of weight and oil liquid, Oil liquid flows back since the first oil outlet 6 in master cylinder 2, under the action of interface channel 11 and drainback passage 12, oil liquid reflux Oil return opening 9 into secondary cylinder 3 is until in secondary cylinder 3, piston rod and the decline of weight lifting disk in master cylinder 2 discharge weight；At this point, due to Oil pump does not work, and the oil in secondary cylinder 3 will not actively enter in master cylinder 2, and safety valve is to close, so when turning on the switch When valve, oil liquid is merely able to move from master cylinder 2 by drainback passage 12 to secondary cylinder 3, declines weight, completes the release of weight.

The overloading of this integrated form hydraulic jack is as follows: by manually controlling oil pump component, allow oil in secondary cylinder 3 by The first oil inlet 5 in master cylinder 2 is begun to flow into from the second oil outlet 7 in secondary cylinder 3 in atmospheric pressure principle, so oil liquid is from One oil inlet 5 enters in master cylinder 2；Under the action of interface channel 11 and exit passageway 13, since the weight on weight lifting disk is overweight, At this point, oil liquid, which can flow through master cylinder 2, opens safety valve up to the first oil outlet 6, then by interface channel 11, pass through exit passageway 13 The second oil inlet 8 is flow to until not playing castering action to weight in secondary cylinder 3, completion carries out overload protection to it.

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, master cylinder；3, secondary cylinder；4, pedestal；5, the first oil inlet；6, first goes out Hydraulic fluid port；7, the second oil outlet；8, the second oil inlet；9, oil return opening；10, oil inlet passage；11, interface channel；12, drainback passage； 13, the terms such as exit passageway, but it does not exclude the possibility of using other terms.The use of these items is only for more convenient Ground describes and explains the essence of the utility model；Being construed as any additional limitation all is and the utility model essence What mind was disagreed.

Claims (8)

1. integrated form hydraulic jack, including pedestal, master cylinder and the secondary cylinder being arranged in outside master cylinder, the master cylinder and secondary cylinder are equal It is fixed on the base, the piston rod that piston is provided in the master cylinder and is connected with piston, the upper end of piston rod is fixed with act Disk again, which is characterized in that this integrated form hydraulic jack further includes the pedestal being detachably arranged on pedestal, on the pedestal Offer the first oil inlet being connected with master cylinder and the first oil outlet, the second oil outlet being connected with secondary cylinder, the second oil inlet Mouthful and oil return opening, the lower end of first oil inlet be connected with the lower end of the second oil outlet by oil inlet passage, and first into The check valve for being used to open and blocking the oily single flow direction master cylinder in oil inlet passage is provided in hydraulic fluid port, the oil inlet passage is also It is connected to pedestal, being provided on the pedestal can make the oil in secondary cylinder pass through the oil pump component that oil inlet passage is flowed into master cylinder, The lower end of first oil outlet is communicated with interface channel, has been respectively communicated with drainback passage and exit passageway on interface channel, Drainback passage is connected to the return port from pedestal detour, and is provided between drainback passage and interface channel and is used to open and blocks company Switch valve of the oil stream in road to drainback passage is connected, exit passageway is connected from pedestal detour with the second oil inlet, and safety It is provided between channel and interface channel and is used to open and blocks safety valve of the oil stream in interface channel to exit passageway.

2. integrated form hydraulic jack according to claim 1, which is characterized in that be communicated with and unload on the interface channel Oily channel, on the base, emptying is provided with oil drain valve in channel for the emptying channel setting.

3. integrated form hydraulic jack according to claim 2, which is characterized in that the oil pump component include pump core and Foot-driven lever, the pump core are arranged in oil inlet passage, and the foot-driven lever is hingedly connected on the base and with pump core.

4. integrated form hydraulic jack according to claim 1 or 2 or 3, which is characterized in that the check valve includes setting Steel ball one and spring one that the first oil inlet is blocked, one end of spring one and steel ball one can be connected in oil inlet passage by setting, bullet The other end of spring one and the one side wall of oil inlet passage are connected.

5. integrated form hydraulic jack according to claim 1 or 2 or 3, which is characterized in that be arranged on the switch valve Having can be by steel ball two and spring two that the connector of interface channel and drainback passage is blocked, and one end of spring two and steel ball two are solid Even, the other end of spring two and switch valve are connected.

6. integrated form hydraulic jack according to claim 1 or 2 or 3, which is characterized in that be arranged on the safety valve Steel ball three can be withstood for steel ball three and torsional spring that the connector of interface channel and exit passageway is blocked, one end of torsional spring by having, and be turned round The other end of spring is set on safety valve.

7. integrated form hydraulic jack according to claim 4, which is characterized in that pass through between the pedestal and pedestal Bolt and nut connection, and seal washer is provided between pedestal and pedestal.

8. integrated form hydraulic jack according to claim 7, which is characterized in that the pedestal is L-shaped.