CN203717519U - Supercharging oil cylinder, supercharging system and sealing performance experiment table - Google Patents

Supercharging oil cylinder, supercharging system and sealing performance experiment table Download PDF

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Publication number
CN203717519U
CN203717519U CN201320838152.XU CN201320838152U CN203717519U CN 203717519 U CN203717519 U CN 203717519U CN 201320838152 U CN201320838152 U CN 201320838152U CN 203717519 U CN203717519 U CN 203717519U
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CN
China
Prior art keywords
oil
hydraulic fluid
fluid port
chamber
divider
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CN201320838152.XU
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Chinese (zh)
Inventor
艾正元
李志军
汪波
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湖南特力液压有限公司
中联重科股份有限公司
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Priority to CN201320838152.XU priority Critical patent/CN203717519U/en
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Publication of CN203717519U publication Critical patent/CN203717519U/en

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Abstract

The utility model discloses a supercharging oil cylinder. The supercharging oil cylinder comprises a cylinder body (10) and a separation member (20), wherein the separation member (20) is arranged in the cylinder body (10) so as to divide a cavity of the cylinder body (10) into a first cavity (30) and a second cavity (40), a piston (50) is arranged in the first cavity (30), the first cavity (30) is divided by the piston (50) into a rodless cavity (301) and a rod cavity (302), a piston rod (6) runs through the separation member (20) so as to enter the second cavity (40), and the super charging oil cylinder also comprises a first oil port (A), a second oil port (B), a third oil port (C) and a fourth oil port (D). The utility model discloses a supercharging system and a sealing performance experiment table comprising the supercharging oil cylinder. By adopting the supercharging oil cylinder, not only can the high-pressure hydraulic oil be outputted, but also the hydraulic oil with the pressure being approximately zero can be outputted.

Description

Pressurizing cylinder, pressurization system and sealing Laboratory Furniture

Technical field

The utility model relates to hydraulic equipment field, particularly, relates to a kind of pressurizing cylinder and the pressurization system that comprises this pressurizing cylinder, also relates to a kind of sealing Laboratory Furniture that comprises described pressurization system.

Background technique

Pressurizing cylinder is widely used in multiple hydraulic equipment to realize the supercharging of hydraulic oil, for example can in sealing Laboratory Furniture to detect the sealing of measured piece (as oil hydraulic cylinder).In sealing Laboratory Furniture, need the pressurizing cylinder can be to the hydraulic oil of inputting multiple pressure in measured piece, to simulate the various operating modes of measured piece in real work.For measured pieces such as oil hydraulic cylinders, because its internal pressure under working condition is very high, and under backhaul operating mode internal pressure close to zero, for the accurate actual conditions of simulation tested liquid cylinder pressure, need pressurizing cylinder can export ultrahigh-pressure hydraulic oil, again can delivery pressure close to zero hydraulic oil.

Fig. 1 is the structural representation of the pressurizing cylinder of prior art, the pressurizing cylinder 1 ' of prior art comprises cylinder body 10, piston 50 and piston rod 60, the chamber of cylinder body 10 is separated into rod chamber and rodless cavity by piston 50, on cylinder body 10 ', be formed with the first hydraulic fluid port A, the second hydraulic fluid port B, the 3rd hydraulic fluid port C and the 4th hydraulic fluid port D, wherein, the first hydraulic fluid port A and the second hydraulic fluid port B are all communicated with rodless cavity, and the 3rd hydraulic fluid port C and the 4th hydraulic fluid port D are all communicated with rod chamber.Fig. 2 is the fundamental diagram of the pressurization system of prior art, and the pressurization system of prior art comprises pressurizing cylinder 1 ', the oil-feed oil circuit 80 ' being connected with the first hydraulic fluid port A ', the oil return circuit 90 ' being connected with the second hydraulic fluid port B ' and the repairing oil circuit 120 ' that is connected with the 4th hydraulic fluid port D '.

With reference to figure 1 and Fig. 2, when supercharging, the first selector valve 180 ' is in right position, the first Pilot operated check valve 150 ' is opened, the second selector valve 190 ' is in left position simultaneously, the second Pilot operated check valve 160 ' is closed, hydraulic oil enters rodless cavity from oil-feed oil circuit 80, thereby promote piston 50 ' to left movement, because rodless cavity is different from the effective active area of rod chamber, thereby in rod chamber, produce the pressurised oil with high pressure, owing to being provided with one-way valve 140 ' on repairing oil circuit 120 ', pressurised oil can only be from the 3rd hydraulic fluid port C ' output, rodless cavity is its supercharging multiple with the ratio of the effective active area of rod chamber, when release, the second selector valve 190 ' is in right position, the second Pilot operated check valve 160 ' is opened, the first selector valve 180 ' is in left position simultaneously, the first Pilot operated check valve 150 ' is closed, promote piston 50 ' from the hydraulic oil (low pressure oil) of the 4th hydraulic fluid port D ' input and move right, make the fluid in rodless cavity flow back to fuel tank through the second Pilot operated check valve 160 ', the pressure of the fluid of now exporting from the 3rd hydraulic fluid port C ' equates with the hydraulic fluid pressure of inputting from the 4th hydraulic fluid port D '.By the first selector valve 180 ' and the constantly samsara action successively of the second selector valve 190 ', be pulsating pressure thereby make from the pressure of the 3rd hydraulic fluid port C ' output.

In the prior art, owing to need to thering is certain pressure from the hydraulic oil of the 4th hydraulic fluid port D ' input to promote piston 50 ' motion, make still there is certain pressure from the hydraulic oil of the 3rd hydraulic fluid port C ' output in the time of release.That is to say, pressurizing cylinder 1 ' cannot delivery pressure close to zero hydraulic oil, thereby be difficult to accurately simulate the actual conditions of measured piece.And, due to lower from the hydraulic fluid pressure of the 4th hydraulic fluid port D ' input, make the time of pressurizing cylinder release longer.

Model utility content

The purpose of this utility model is to provide a kind of pressurizing cylinder, and this pressurizing cylinder not only can be exported high pressure liquid force feed, and can delivery pressure close to zero hydraulic oil.

To achieve these goals, the utility model provides a kind of pressurizing cylinder, comprise cylinder body and divider, described divider is arranged in described cylinder body, the chamber of described cylinder body is separated into the first chamber and the second chamber, in described the first chamber, be provided with the piston that can move back and forth in this first chamber, described the first chamber is separated into rodless cavity and rod chamber by this piston, on described piston, be connected with piston rod, this piston rod passes described divider to enter in described the second chamber, described pressurizing cylinder also comprises the first hydraulic fluid port, the second hydraulic fluid port, the 3rd hydraulic fluid port and the 4th hydraulic fluid port, described the first hydraulic fluid port is communicated with described rodless cavity, described the 3rd hydraulic fluid port is communicated with the one in described rod chamber and described the second chamber, described the second hydraulic fluid port and described the 4th hydraulic fluid port are all communicated with the another one in described rod chamber and described the second chamber.

Preferably, described the 3rd hydraulic fluid port is communicated with described rod chamber, and described the second hydraulic fluid port and described the 4th hydraulic fluid port are all communicated with described the second chamber.

Preferably, between described divider and described piston rod, be provided with multiple the first Sealings, between described divider and described cylinder body, be provided with multiple the second Sealings.

Preferably, described divider has tubular construction, on the inner peripheral surface of described divider, be formed with the first annular oil groove, described multiple the first Sealing is positioned at the both sides of described the first annular oil groove on the axial direction of described divider, on the outer circumferential face of described divider, be formed with the second annular oil groove being communicated with described the first annular oil groove, described multiple the second Sealing is positioned at the both sides of described the second annular oil groove on the axial direction of described divider, on described cylinder body, be formed with drain tap, this drain tap is communicated with described the second annular oil groove.

Preferably, described cylinder body comprises the first portion and the second portion that are formed as tubular, the end towards described second portion of described first portion is formed with the first flange, the end towards described first portion of described second portion is formed with the second flange, described the first flange is connected with described the second flange bolt, described the first chamber is formed in described first portion, described the second chamber is formed in described second portion, and described divider is positioned at the joint of described first portion and described second portion.

Preferably, on the outer circumferential face of described divider, be formed with boss, this boss is from outstanding the entering between described first portion and described second portion of outer circumferential face of described divider.

The utility model also provides a kind of pressurization system, comprise root pressurizing cylinder as above, described pressurization system also comprises oil-feed oil circuit, oil return circuit, the first working oil path, the second working oil path, repairing oil circuit and selector valve, the filler opening of described selector valve is connected with described oil-feed oil circuit and oil return circuit respectively with return opening, the first actuator port of described selector valve is connected in described the first hydraulic fluid port by described the first working oil path, the second actuator port of described selector valve is connected in described the 3rd hydraulic fluid port by described the second working oil path, described repairing oil circuit is connected in described the 4th hydraulic fluid port.

Preferably, the spool of described selector valve has meta position, the first working position and the second working position, and wherein in described meta position, described the first working oil path and described the second working oil path are all communicated with described oil return circuit and end with described oil-feed oil circuit; In described the first working position, described the first working oil path is communicated with described oil-feed oil circuit, and described the second working oil path is communicated with described oil return circuit; In described the second working position, described the first working oil path is communicated with described oil return circuit, and described the second working oil path is communicated with described oil-feed oil circuit.

Preferably, on described oil-feed oil circuit and described repairing oil circuit, be provided with the one-way valve that prevents that fluid from refluxing.

The utility model also provides a kind of sealing Laboratory Furniture, comprises pressurizing cylinder as above, described pressurizing cylinder by described the second hydraulic fluid port to measured piece conveying liquid force feed.

Pass through such scheme, in release operating mode, because being promotes piston by the hydraulic oil of the 3rd hydraulic fluid port input to move, the supplementary hydraulic oil of the 4th hydraulic fluid port input is without promoting piston acting, therefore this supplementary hydraulic oil can have the pressure close to zero, thereby makes from the hydraulic fluid pressure of the second hydraulic fluid port output close to zero.That is to say, pressurizing cylinder of the present utility model not only can be exported high pressure liquid force feed under supercharging operating mode, and can be under release operating mode delivery pressure close to zero low-pressure hydraulic oil.And, because the 3rd hydraulic fluid port is not communicated with the second hydraulic fluid port, therefore, can there is elevated pressures by the hydraulic oil of the 3rd hydraulic fluid port input, to promote piston or piston rod rapid movement, thereby shorten the release time.

Other feature and advantage of the present utility model are described in detail the embodiment part subsequently.

Brief description of the drawings

Accompanying drawing is to be used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:

Fig. 1 is the structural representation of the pressurizing cylinder of prior art;

Fig. 2 is the fundamental diagram of the pressurization system of prior art;

Fig. 3 is according to the structural representation of the pressurizing cylinder of a kind of mode of execution of the present utility model;

Fig. 4 is according to the fundamental diagram of the pressurization system of a kind of mode of execution of the present utility model.

Description of reference numerals

1,1 ' pressurizing cylinder 10 cylinder body 101 first portions

102 second portion 103 drain tap 20 dividers

201 first annular oil groove 202 second annular oil groove 203 boss

30 first chamber 301 rodless cavity 302 rod chambers

40 second chamber 50 piston 60 piston rods

701 first Sealing 702 second Sealings 80,80 ' oil-feed oil circuit

90,90 ' oil return circuit 100 first working oil path 110 second working oil path

120,120 ' repairing oil circuit 130 selector valves 140,140 ' one-way valve

150 ' first Pilot operated check valve 160 ' second Pilot operated check valve the 170 ' first one-way valve

180 ' first selector valve the 190 ' second selector valve 1,011 first flanges

1021 second flanges

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the utility model, is not limited to the utility model.

In the utility model, in the situation that not doing contrary explanation, the noun of locality of use typically refers to reference to shown in the drawings left and right as " left and right ", and " inside and outside " refers to inside and outside with respect to the profile of parts own.

As shown in Figure 3, according to an aspect of the present utility model, a kind of pressurizing cylinder is provided, comprise cylinder body 10 and divider 20, described divider 20 is arranged in described cylinder body 10, the chamber of described cylinder body 10 is separated into the first chamber 30 and the second chamber 40, in described the first chamber 30, be provided with the piston 50 that can move back and forth in this first chamber 30, described the first chamber 30 is separated into rodless cavity 301 and rod chamber 302 by this piston 50, on described piston 50, be connected with piston rod 60, this piston rod 60 passes described divider 20 to enter in described the second chamber 40, described pressurizing cylinder also comprises the first hydraulic fluid port A, the second hydraulic fluid port B, the 3rd hydraulic fluid port C and the 4th hydraulic fluid port D, described the first hydraulic fluid port A is communicated with described rodless cavity 301, described the 3rd hydraulic fluid port C is communicated with the one in described rod chamber 302 and described the second chamber 40, described the second hydraulic fluid port B and described the 4th hydraulic fluid port D are all communicated with the another one in described rod chamber 302 and described the second chamber 40.

First it should be noted that, pressurizing cylinder of the present utility model has supercharging operating mode and release operating mode, and wherein, when pressurizing cylinder is during in supercharging operating mode, it is elongated gradually that described piston rod 60 stretches into the length of described the second chamber 40; When pressurizing cylinder is during in release operating mode, the length that described piston rod 60 stretches into described the second chamber 40 shortens gradually.In above-mentioned four hydraulic fluid ports, the first hydraulic fluid port A is for moving to promote piston 50 to rodless cavity 301 input hydraulic pressure oil in described supercharging operating mode, the second hydraulic fluid port B is for outwards exporting boost fluid force feed in described supercharging operating mode, the 3rd hydraulic fluid port C is for moving to promote piston 50 or piston rod 60 to the one input hydraulic pressure oil of rod chamber 302 and the second chamber 40 in described release operating mode, and the 4th hydraulic fluid port D is for supplementing hydraulic oil to avoid occurring the situation of negative pressure of vacuum in described release operating mode to the another one input of rod chamber 302 and the second chamber 40.

Unlike the prior art, in pressurizing cylinder of the present utility model, except rod chamber 301 and rodless cavity 302, also be formed with the second chamber 40, by described the 3rd hydraulic fluid port C is communicated with the one in described rod chamber 302 and described the second chamber 40, described the 4th hydraulic fluid port D is communicated with the another one in described rod chamber 302 and described the second chamber 40, makes the 3rd hydraulic fluid port C and the 4th hydraulic fluid port D be communicated in respectively different chambers.

In the first mode of execution of the present utility model, as shown in Figure 3, described the 3rd hydraulic fluid port C is communicated with described rod chamber 302, and described the second hydraulic fluid port B and described the 4th hydraulic fluid port D are all communicated with described the second chamber 40.In this case, the supercharging multiple of pressurizing cylinder is rodless cavity and the ratio of the effective active area of piston rod.

In the second mode of execution of the present utility model, described the 3rd hydraulic fluid port C is communicated with described the second chamber 40, and described the second hydraulic fluid port B and described the 4th hydraulic fluid port D are all communicated with rod chamber 302.In this case, the supercharging multiple of pressurizing cylinder is rodless cavity and the ratio of the effective active area of rod chamber.

In release operating mode, because being promotes piston 50 by the hydraulic oil of the 3rd hydraulic fluid port C input to move, the supplementary hydraulic oil of the 4th hydraulic fluid port D input does work without promoting piston 50, therefore this supplementary hydraulic oil can have the pressure close to zero, thereby makes from the hydraulic fluid pressure of the second hydraulic fluid port B output close to zero.That is to say, pressurizing cylinder of the present utility model not only can be exported high pressure liquid force feed under supercharging operating mode, and can be under release operating mode delivery pressure close to zero low-pressure hydraulic oil.And, because the 3rd hydraulic fluid port C is not communicated with the second hydraulic fluid port B, therefore, can there is elevated pressures by the hydraulic oil of the 3rd hydraulic fluid port C input, to promote piston 50 or piston rod 60 rapid movements, thereby shorten the release time.In the time that pressurizing cylinder of the present utility model is used for sealing Laboratory Furniture, can make Laboratory Furniture simulate more accurately the actual conditions of measured piece.

In order to prevent that the fluid in 20 liang of side cavity of divider from interpenetrating, preferably, between described divider 20 and described piston rod 60, be provided with multiple the first Sealings 701, between described divider 20 and described cylinder body 10, be provided with multiple the second Sealings 702.

More preferably, as shown in Figure 3, described divider 20 has tubular construction, on the inner peripheral surface of described divider 20, be formed with the first annular oil groove 201, described multiple the first Sealing 701 is positioned at the both sides of described the first annular oil groove 201 on the axial direction of described divider 20, on the outer circumferential face of described divider 20, be formed with the second annular oil groove 202 being communicated with described the first annular oil groove 201, described multiple the second Sealing 702 is positioned at the both sides of described the second annular oil groove 202 on the axial direction of described divider 20, on described cylinder body 10, be formed with drain tap 103, this drain tap 103 is communicated with described the second annular oil groove 202.By this set, can solve between the chamber of divider 20 both sides because Sealing 70 leaks the entrap phenomenon producing, thereby extend working life of Sealing 70.

In pressurizing cylinder of the present utility model, cylinder body 10 structure that can form as one, also can be formed as Split type structure.For the more convenient parts of safeguarding cylinder interior, preferably, as shown in Figure 3, described cylinder body 10 comprises the first portion 101 and the second portion 102 that are formed as tubular, the end towards described second portion 102 of described first portion 101 forms the first flange 1011, the end towards described first portion 101 of described second portion 102 is formed with the second flange 1021, described the first flange 1011 is connected with described the second flange 1021 bolts, described the first chamber 30 is formed in described first portion 101, described the second chamber 40 is formed in described second portion 102, described divider 20 is positioned at the joint of described first portion 101 and described second portion 102.

Because divider 20 is fixed with respect to the position of cylinder body 10, for spacing divider 20 better, prevent that it from moving along cylinder body 20, preferably, on the outer circumferential face of described divider 20, be formed with boss 203, this boss 203 is from outstanding the entering between described first portion 101 and described second portion 102 of outer circumferential face of divider 20.

According on the other hand of the present utility model, a kind of pressurization system is provided, as shown in Figure 4, this pressurization system comprises according to pressurizing cylinder 1 of the present utility model, also comprise oil-feed oil circuit 80, oil return circuit 90, the first working oil path 100, the second working oil path 110, repairing oil circuit 120 and selector valve 130, the filler opening of described selector valve 130 is connected with described oil-feed oil circuit 80 and oil return circuit 90 respectively with return opening, the first actuator port of described selector valve 130 is connected in described the first hydraulic fluid port A by described the first working oil path 100, the second actuator port of described selector valve 130 is connected in described the 3rd hydraulic fluid port C by described the second working oil path 110, described repairing oil circuit 120 is connected in described the 4th hydraulic fluid port D, wherein, hydraulic oil on oil-feed oil circuit 80 is high pressure oil, hydraulic oil on repairing oil circuit 120 is low pressure oil.

More specifically, the spool of described selector valve 130 has meta position, the first working position and the second working position, wherein, in described meta position, described the first working oil path 100 and described the second working oil path 110 are all communicated with described oil return circuit 90 and end with described oil-feed oil circuit 80; In described the first working position, described the first working oil path 100 is communicated with described oil-feed oil circuit 80, and described the second working oil path 110 is communicated with described oil return circuit 90; In described the second working position, described the first working oil path 100 is communicated with described oil return circuit 90, and described the second working oil path 110 is communicated with described oil-feed oil circuit 80.

Preferably, on described oil-feed oil circuit 80 and described repairing oil circuit 120, be provided with the one-way valve 140 that prevents that fluid from refluxing.

Describe according to the working principle of the pressurization system of preferred implementation of the present utility model below in conjunction with Fig. 4.

When supercharging, selector valve 130 is in left position (the first working position), high pressure oil in oil-feed oil circuit 80 enters rodless cavity by the first hydraulic fluid port A and promotes piston 50 to left movement, piston rod 60 is equivalent to plunger pressurization in the second chamber 40, and the pressurised oil producing in the second chamber 40 is because the effect of one-way valve 140 can only be from the second hydraulic fluid port B output;

When release, selector valve 130 is in right position (the second working position), high pressure oil in oil-feed oil circuit 80 enters rod chamber promotion piston 50 by the 3rd hydraulic fluid port C and moves right fast, low pressure oil in repairing oil circuit 120 enters the second chamber 40, now, pressure on repairing oil circuit 120 only needs to open one-way valve 140, and the pressure on repairing oil circuit 120 is close to zero, thereby makes the delivery pressure of the second hydraulic fluid port B close to zero.

Provide a kind of sealing Laboratory Furniture also on the other hand according to of the present utility model, sealing Laboratory Furniture comprises according to pressurizing cylinder of the present utility model, described pressurizing cylinder by described the second hydraulic fluid port B to measured piece conveying liquid force feed.

Below describe by reference to the accompanying drawings preferred implementation of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.

It should be noted that in addition each the concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can combine by any suitable mode.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.

In addition, also can carry out combination in any between various mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.

Claims (10)

1. a pressurizing cylinder, it is characterized in that, comprise cylinder body (10) and divider (20), described divider (20) is arranged in described cylinder body (10), the chamber of described cylinder body (10) is separated into the first chamber (30) and the second chamber (40), in described the first chamber (30), be provided with the piston (50) that can move back and forth in this first chamber (30), described the first chamber (30) is separated into rodless cavity (301) and rod chamber (302) by this piston (50), on described piston (50), be connected with piston rod (60), this piston rod (60) passes described divider (20) to enter in described the second chamber (40), described pressurizing cylinder also comprises the first hydraulic fluid port (A), the second hydraulic fluid port (B), the 3rd hydraulic fluid port (C) and the 4th hydraulic fluid port (D), described the first hydraulic fluid port (A) is communicated with described rodless cavity (301), described the 3rd hydraulic fluid port (C) is communicated with the one in described rod chamber (302) and described the second chamber (40), described the second hydraulic fluid port (B) and described the 4th hydraulic fluid port (D) are all communicated with the another one in described rod chamber (302) and described the second chamber (40).
2. pressurizing cylinder according to claim 1, it is characterized in that, described the 3rd hydraulic fluid port (C) is communicated with described rod chamber (302), and described the second hydraulic fluid port (B) and described the 4th hydraulic fluid port (D) are all communicated with described the second chamber (40).
3. pressurizing cylinder according to claim 1, it is characterized in that, between described divider (20) and described piston rod (60), be provided with multiple the first Sealings (701), between described divider (20) and described cylinder body (10), be provided with multiple the second Sealings (702).
4. pressurizing cylinder according to claim 3, it is characterized in that, described divider (20) has tubular construction, on the inner peripheral surface of described divider (20), be formed with the first annular oil groove (201), described multiple the first Sealings (701) are positioned at the both sides of described the first annular oil groove (201) on the axial direction of described divider (20), on the outer circumferential face of described divider (20), be formed with the second annular oil groove (202) being communicated with described the first annular oil groove (201), described multiple the second Sealings (702) are positioned at the both sides of described the second annular oil groove (202) on the axial direction of described divider (20), on described cylinder body (10), be formed with drain tap (103), this drain tap (103) is communicated with described the second annular oil groove (202).
5. pressurizing cylinder according to claim 1, it is characterized in that, described cylinder body (10) comprises the first portion (101) and the second portion (102) that are formed as tubular, the end towards described second portion (102) of described first portion (101) is formed with the first flange (1011), the end towards described first portion (101) of described second portion (102) is formed with the second flange (1021), described the first flange (1011) is connected with described the second flange (1021) bolt, described the first chamber (30) is formed in described first portion (101), described the second chamber (40) is formed in described second portion (102), described divider (20) is positioned at the joint of described first portion (101) and described second portion (102).
6. pressurizing cylinder according to claim 5, it is characterized in that, on the outer circumferential face of described divider (20), be formed with boss (203), this boss (203) is from outstanding the entering between described first portion (101) and described second portion (102) of outer circumferential face of described divider (20).
7. a pressurization system, it is characterized in that, comprise according to the pressurizing cylinder described in any one in claim 1 to 6 (1), described pressurization system also comprises oil-feed oil circuit (80), oil return circuit (90), the first working oil path (100), the second working oil path (110), repairing oil circuit (120) and selector valve (130), the filler opening of described selector valve (130) is connected with described oil-feed oil circuit (80) and oil return circuit (90) respectively with return opening, the first actuator port of described selector valve (130) is connected in described the first hydraulic fluid port (A) by described the first working oil path (100), the second actuator port of described selector valve (130) is connected in described the 3rd hydraulic fluid port (C) by described the second working oil path (110), described repairing oil circuit (120) is connected in described the 4th hydraulic fluid port (D).
8. pressurization system according to claim 7, it is characterized in that, the spool of described selector valve (130) has meta position, the first working position and the second working position, wherein, in described meta position, described the first working oil path (100) and described the second working oil path (110) are all communicated with described oil return circuit (90) and end with described oil-feed oil circuit (80); In described the first working position, described the first working oil path (100) is communicated with described oil-feed oil circuit (80), and described the second working oil path (110) is communicated with described oil return circuit (90); In described the second working position, described the first working oil path (100) is communicated with described oil return circuit (90), and described the second working oil path (110) is communicated with described oil-feed oil circuit (80).
9. pressurization system according to claim 7, is characterized in that, is provided with the one-way valve (140) that prevents that fluid from refluxing on described oil-feed oil circuit (80) and described repairing oil circuit (120).
10. a sealing Laboratory Furniture, is characterized in that, comprise according to the pressurizing cylinder described in any one in claim 1-6, described pressurizing cylinder by described the second hydraulic fluid port (B) to measured piece conveying liquid force feed.
CN201320838152.XU 2013-12-18 2013-12-18 Supercharging oil cylinder, supercharging system and sealing performance experiment table CN203717519U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104863920A (en) * 2015-04-21 2015-08-26 太原理工大学 Combined loading oil cylinder
CN105221494A (en) * 2015-10-30 2016-01-06 江南工业集团有限公司 A kind of oil drives pressurized cylinder
CN108644092A (en) * 2018-05-18 2018-10-12 东莞海特帕沃液压科技有限公司 A kind of reciprocating air compressor of hydraulic-driven
CN109973460A (en) * 2019-04-01 2019-07-05 广州机械科学研究院有限公司 A kind of reciprocation sealing test cylinder (jar) and its testing stand

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104863920A (en) * 2015-04-21 2015-08-26 太原理工大学 Combined loading oil cylinder
CN104863920B (en) * 2015-04-21 2017-03-01 太原理工大学 A kind of combination load cylinder
CN105221494A (en) * 2015-10-30 2016-01-06 江南工业集团有限公司 A kind of oil drives pressurized cylinder
CN108644092A (en) * 2018-05-18 2018-10-12 东莞海特帕沃液压科技有限公司 A kind of reciprocating air compressor of hydraulic-driven
CN109973460A (en) * 2019-04-01 2019-07-05 广州机械科学研究院有限公司 A kind of reciprocation sealing test cylinder (jar) and its testing stand

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