CN110345112B - High-speed and oil-gas isolated gas-liquid booster cylinder - Google Patents
High-speed and oil-gas isolated gas-liquid booster cylinder Download PDFInfo
- Publication number
- CN110345112B CN110345112B CN201910740400.9A CN201910740400A CN110345112B CN 110345112 B CN110345112 B CN 110345112B CN 201910740400 A CN201910740400 A CN 201910740400A CN 110345112 B CN110345112 B CN 110345112B
- Authority
- CN
- China
- Prior art keywords
- hole
- oil
- bypass
- valve rod
- longitudinal
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 58
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 14
- 238000002955 isolation Methods 0.000 claims description 23
- 230000003068 static effect Effects 0.000 claims description 6
- 238000003825 pressing Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 125
- 239000010720 hydraulic oil Substances 0.000 description 24
- 238000000926 separation method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1404—Characterised by the construction of the motor unit of the straight-cylinder type in clusters, e.g. multiple cylinders in one block
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
Abstract
The invention provides a high-speed and oil-gas isolated gas-liquid booster cylinder, which comprises an oil-gas isolated cylinder, a middle end cover, a metal cylinder and a booster cylinder, wherein the middle end cover is arranged on the middle end cover; the axial through hole, the transverse hole, the connecting block and the oil through hole are formed in the middle end cover; a pressurizing rod and a pressurizing piston which are arranged in the metal cylinder; the axial through hole consists of a large-diameter section and a small-diameter section, a sealing ring is arranged in the small-diameter section, and the inner diameter of the large-diameter section is larger than that of the pressurizing section; a first sealing ring is arranged in the oil through hole; the valve rod is combined with the first sealing ring in the extending process and is used for closing the oil through hole; when the valve rod is retracted, the oil through hole is communicated. Compared with the prior art, the invention shortens the whole pressurizing and pressure releasing period, can finish the pressing of more workpieces in unit time, and further improves the production efficiency; the oil bypass structure is added, so that the moving speed and state of the booster piston can be controlled, and different process requirements are met.
Description
Technical Field
The invention relates to the technical field of booster cylinders, in particular to a high-speed gas-liquid booster cylinder adopting an oil-gas isolation cylinder.
Background
The pressurizing cylinder is used as a pressurizing device on mechanical equipment and is used for pressing a workpiece, so that the pressurizing cylinder is widely applied; the conventional booster cylinder generally comprises a low-pressure cylinder body for providing hydraulic oil, a metal cylinder for arranging a booster rod and a booster piston, a booster cylinder for boosting, a booster piston arranged in the booster cylinder, a booster piston rod vertically connected with one surface of the booster piston, and a middle end cover for connecting the metal cylinder and the booster cylinder together, wherein an axial through hole and a transverse hole communicated with the axial through hole are arranged in the middle end cover; when the hydraulic oil pump works, hydraulic oil from the low-pressure cylinder body sequentially passes through the oil through hole, the transverse hole, the middle section of the axial through hole and the pressurizing section and then enters the pressurizing cylinder under the action of gas pressure, the hydraulic oil contacts with the other surface of the pressurizing piston and extrudes the pressurizing piston, the pressurizing piston is pushed to move rapidly under the action of the gas pressure, the pressurizing section on the pressurizing rod is pushed to advance along the axial through hole, and after the pressurizing section enters the pressurizing section and passes through the sealing ring in the pressurizing section, the pressurizing cylinder is completely isolated from the transverse hole, at the moment, because the hydraulic oil is incompressible, the pressurizing piston and the pressurizing piston rod can be pushed to advance rapidly when the pressurizing section continues to advance, and the pressurizing piston rod can complete workpiece pressing rapidly; then, the pressure release process is started, the pressurizing piston advances to the initial position under the action of air pressure until the pressurizing section of the pressurizing rod is completely separated from the pressurizing section of the axial through hole, the pressurizing piston resets under the action of the air pressure, and meanwhile hydraulic oil in the pressurizing cylinder is pushed to return to the low-pressure cylinder body through the pressurizing section, the transverse hole and the oil through hole in sequence. As can be seen from the description of the structure and the working principle, the existing pressurizing cylinder can finish workpiece pressing, but has a longer pressurizing stroke, namely the pressurizing section of the pressurizing rod can realize pressurizing operation after passing through the pressurizing section, and also has a longer pressure releasing stroke, namely the pressurizing section must be completely separated from the pressurizing section, hydraulic oil in the pressurizing cylinder can return to the low-pressure cylinder body, and the pressurizing piston cannot synchronously move in the pressure releasing process, so that the working efficiency of the pressurizing cylinder is necessarily reduced by the existing structure, and the processing of workpieces is less in unit time.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an efficient high-speed and oil-gas isolated gas-liquid booster cylinder.
In order to achieve the above purpose, the invention adopts the following technical scheme: the high-speed and oil-gas isolated gas-liquid booster cylinder comprises an oil-gas isolation cylinder, a middle end cover, a metal cylinder connected with one end of the middle end cover and a booster cylinder connected with the other end of the middle end cover; the axial through hole is arranged in the middle end cover and the transverse hole is communicated with the axial through hole, and the axial through hole is communicated with the pressurizing cylinder; the connecting block is arranged between the oil-gas isolation cylinder and the middle end cover, and the oil through hole is arranged in the connecting block and used for communicating the oil-gas isolation cylinder with the transverse hole; the pressurizing section is arranged at the other end of the pressurizing rod and integrally formed with the pressurizing rod, and can move along the axial through hole; the axial through hole consists of a large-diameter section and a small-diameter section, a sealing ring connected with the inner wall of the small-diameter section is radially arranged in the small-diameter section, and the inner diameter of the large-diameter section is larger than the diameter of the pressurizing section; a first sealing ring connected with the inner wall of the oil through hole is arranged in the oil through hole along the radial direction of the oil through hole; the valve rod is arranged on the power piece, the free end part of the valve rod is positioned in the oil through hole, the power piece can drive the valve rod to stretch out and draw back relative to the oil through hole, the free end part of the valve rod penetrates through the first sealing ring in the extending process, and the inner wall of the first sealing ring is attached to the outer wall of the free end part of the valve rod and is used for closing the oil through hole; when the valve rod is retracted, the free end part of the valve rod is separated from the first sealing ring, and the oil through hole is communicated; in a static state, namely a non-working state, a pressurizing section on the pressurizing rod is positioned in the small-diameter section, a sealing ring is attached to the outer wall of the pressurizing section, and the metal cylinder and the pressurizing cylinder are separated; the free end of the valve rod is attached to the inner wall of the first sealing ring, the oil through hole is cut off, and the oil-gas isolation cylinder is isolated from the middle end cover. When the pressurizing piston is in contact with a workpiece, for example, one end of a pressurizing piston rod fixedly connected with the pressurizing piston is in contact with the workpiece, namely, the pressurizing piston rod reaches the set position, the valve rod stretches out, the free end of the valve rod is attached to the inner wall of the first sealing ring, the oil through hole is closed, at the moment, a section, which is far away from the oil-gas isolation cylinder, of the oil through hole, a section, which is closed by the pressurizing piston, of the pressurizing cylinder in the oil through hole is communicated with each other, the pressurizing piston moves and drives the pressurizing piston to move under the action of gas pressure, the pressurizing section on the pressurizing rod enters the section, and as the hydraulic oil is incompressible, the pressurizing piston is pressurized when the pressurizing section enters the section, the pressurizing piston is driven to quickly move, and the pressurizing piston rod fixedly arranged on the other surface of the pressurizing piston rod is completely pressed; in the pressure relief process, the valve rod is retracted, the free end of the valve rod is separated from the first sealing ring, the oil through hole is conducted, the pressurizing piston drives the pressurizing rod to reset under the action of gas pressure, meanwhile, the pressurizing piston drives the pressurizing piston rod to reset, in the process, for convenience of understanding, a section communicated with the transverse hole on the large-diameter section is defined as an intermediate section, a section communicated with the pressurizing cylinder is defined as a pressurizing section, if the pressurizing section on the pressurizing rod is not completely separated from the pressurizing section of the large-diameter section, hydraulic oil in the pressurizing cylinder returns to the intermediate section of the large-diameter section through a gap between the pressurizing section and the pressurizing section of the large-diameter section, and then returns to the oil-gas isolation cylinder through the transverse hole and the oil through hole, so that the pressure relief process is completed.
The transverse hole is communicated with the large-diameter section of the axial through hole.
The oil hole consists of a longitudinal oil hole, an upper transverse hole and a lower transverse hole, one end of the upper transverse hole is communicated with the longitudinal oil hole, and the other end of the upper transverse hole is communicated with the oil gas isolation cylinder; one end of the lower transverse hole is communicated with the longitudinal oil hole, and the other end of the lower transverse hole is communicated with the transverse hole.
Further, an oil bypass structure is arranged in the connecting block, and the oil bypass structure comprises a bypass longitudinal hole, a bypass upper transverse hole and a bypass lower transverse hole; the bypass longitudinal hole is parallel to the longitudinal oil hole; one end of the bypass transverse hole is communicated with the bypass longitudinal hole, and the other end of the bypass transverse hole is communicated with the longitudinal oil hole; one end of the bypass lower transverse hole is communicated with the bypass longitudinal hole, and the other end of the bypass lower transverse hole is communicated with the longitudinal oil hole; the opening of the bypass cross hole on the inner wall of the longitudinal oil hole and the opening of the bypass lower cross hole on the inner wall of the longitudinal oil hole are respectively positioned at two sides of the first sealing ring; a gap is reserved between the valve rod and the inner wall of the longitudinal oil hole.
The device further comprises a bypass power piece and a bypass valve rod arranged on the bypass power piece; a third sealing ring connected with the inner wall of the bypass longitudinal hole is radially arranged along the bypass longitudinal hole; the free end of the bypass valve rod is positioned in the bypass longitudinal hole, the bypass power piece can drive the bypass valve rod to stretch out and draw back relative to the bypass longitudinal hole, the free end of the bypass valve rod passes through the third sealing ring in the extending process, and the inner wall of the third sealing ring is attached to the outer wall of the free end of the bypass valve rod and is used for closing the bypass longitudinal hole; when the bypass valve rod is retracted, the free end of the bypass valve rod is separated from the third sealing ring, and the bypass longitudinal hole is communicated.
Preferably, the power piece is a cylinder which is fixedly connected with the connecting block; the first sealing ring is arranged in the longitudinal oil hole, the free end part of the valve rod can axially move relative to the longitudinal oil hole, and when the power piece drives the valve rod to extend out, the free end part of the valve rod penetrates through the first sealing ring, the inner wall of the first sealing ring is attached to the outer wall of the free end part of the valve rod, and the longitudinal oil hole is cut off; when the valve rod is retracted, the free end part of the valve rod is separated from the first sealing ring, and the longitudinal oil hole is communicated.
One end of the longitudinal oil hole is provided with a longitudinal oil hole end cover fixedly connected with the connecting block, the other end of the longitudinal oil hole end cover is an inlet end of a free end part of the valve rod, at least one second sealing ring connected with the inner wall of the longitudinal oil hole is arranged in the inlet end part along the radial direction, in a static state, the free end part of the valve rod is positioned in the inlet end part, and the free end part of the valve rod is attached to the inner wall of the second sealing ring.
The bypass power piece is a cylinder and is fixedly connected with the connecting block.
The beneficial technical effects are as follows: in the pressurizing stage, the pressurizing section on the pressurizing rod enters the large-diameter section, namely, the pressurizing process is started, and the pressurizing process is not needed to be started when the pressurizing section on the pressurizing rod enters the pressurizing section in the axial through hole as in the prior art; similarly, in the pressure release stage, the pressurizing piston and the pressurizing piston synchronously reset under the action of the gas pressure, and the hydraulic oil does not need to return to the oil-gas isolation cylinder through the transverse hole and the oil through hole when the pressurizing section on the pressurizing rod is separated from the pressurizing section in the axial through hole as in the prior art, and in the stage, the hydraulic oil returns to the oil-gas isolation cylinder through the gap between the pressurizing section and the pressurizing section in the axial through hole or through the pressurizing section, the transverse hole and the oil through hole when the pressurizing piston resets; meanwhile, in order to control the speed, moving or stopping state of the booster piston in the booster stage or the pressure release stage by changing the flow of hydraulic oil, an oil bypass structure is further arranged, namely the booster piston is enabled to move or stop rapidly by simultaneously opening or closing the oil through hole and the oil bypass structure, one of the oil through hole and the oil bypass structure is selected for opening or closing operation, and the moving speed of the booster piston is changed, so that the booster piston is suitable for different technological requirements in production; compared with the prior art, the invention shortens the stroke of the pressurizing rod in the pressurizing stage, and synchronously resets the pressurizing piston, the pressurizing piston and the hydraulic oil in the pressure releasing stage, thereby shortening the whole pressurizing and pressure releasing period, completing the pressing of more workpieces in unit time and further improving the production efficiency; the oil bypass structure is added, so that the moving speed and state of the booster piston can be controlled, and different process requirements are met.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic view of the oil bypass structure of the present invention in an open state;
fig. 4 is a schematic view showing the closed state of the oil bypass structure of the present invention.
Detailed Description
In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the drawings and embodiments.
As shown in fig. 1-2, the invention comprises an oil-gas isolation cylinder, a middle end cover 1, a metal cylinder 2 connected with one end of the middle end cover, and a pressurizing cylinder 3 connected with the other end of the middle end cover; an axial through hole 101 and a transverse hole 102 which are arranged in the middle end cover and communicated with the axial through hole, wherein the axial through hole 101 is communicated with the pressurizing cylinder 3; the connecting block 4 is arranged between the oil-gas separation cylinder and the middle end cover 1, and the oil through hole 401 is arranged in the connecting block 4 and is used for communicating the oil-gas separation cylinder with the transverse hole 102; a pressurizing rod 5 which is arranged in the metal cylinder 2 and can axially move relative to the metal cylinder, a pressurizing piston 6 which is arranged at one end of the pressurizing rod, a pressurizing section 501 which is arranged at the other end of the pressurizing rod and is integrally formed with the pressurizing rod, and the diameter of the pressurizing section 501 is the same as that of the pressurizing rod 5; the pressing section is movable along the axial through hole 101.
Here, the axial through hole 101 is composed of a large-diameter section 101a and a small-diameter section 101b, and a seal ring 7 connected to the inner wall of the small-diameter section is provided in the small-diameter section 101b in the radial direction thereof, and the inner diameter of the large-diameter section 101a is larger than the diameter of the pressurizing section 501. The transverse bore 102 communicates with the large diameter section 101a of the axial through bore. For convenience of the following description, the large diameter section 101a is divided into two parts and defined respectively, the section communicating with the lateral hole 102 is defined as a middle section a, and the section directly communicating with the pressurizing cylinder is defined as a pressurizing section b.
A first sealing ring 18 connected with the inner wall of the oil through hole is arranged in the oil through hole 401 along the radial direction; in this embodiment, the oil hole 401 has a structure comprising a longitudinal oil hole 401a, an upper transverse hole 401b and a lower transverse hole 401c, wherein one end of the upper transverse hole is communicated with the longitudinal oil hole 401a, and the other end of the upper transverse hole is communicated with the oil-gas isolation cylinder; one end of the lower transverse hole 401c is communicated with the longitudinal oil hole 401a, and the other end is communicated with the transverse hole 102; the first seal ring 18 is radially fixed in the longitudinal oil hole along the longitudinal oil hole 401 a.
In order to close or open the oil through hole 401, the device further comprises a power piece 8, and a valve rod 9 arranged on the power piece, wherein the free end part of the valve rod 9 is positioned in the oil through hole 401, the power piece can drive the valve rod 9 to stretch out and draw back relative to the oil through hole, the free end part of the valve rod 9 passes through a first sealing ring 18 in the extending process, and the inner wall of the first sealing ring is attached to the outer wall of the free end part of the valve rod 9 so as to close the oil through hole 401; when the valve rod 9 is retracted, the free end of the valve rod is separated from the first sealing ring 18, and the oil through hole 401 is communicated; here, when the oil passage hole 401 has the above-described structure, the free end portion of the valve rod 9 is located in the longitudinal oil hole 401a of the oil passage hole 401, that is, the valve rod 9 can axially expand and contract with respect to the longitudinal oil hole 401 a.
In a static state, namely a non-working state, a pressurizing section 501 on the pressurizing rod is positioned in the small-diameter section 101b, a sealing ring 7 is attached to the outer wall of the pressurizing section, and the metal cylinder 2 and the pressurizing cylinder 3 are separated; the free end of the valve rod 9 is attached to the inner wall of the first sealing ring 18, the oil through hole 401 is closed, and the oil-gas isolation cylinder is isolated from the middle end cover.
The low-pressure cylinder body of the embodiment adopts an oil-gas isolation cylinder, which comprises an oil middle cover 10, a first oil cylinder 11 and a second oil cylinder 12 which are respectively arranged at two ends of the oil middle cover, a first end cover 13 arranged at the tail end of the first oil cylinder, a second end cover 14 arranged at the tail end of the second oil cylinder, a middle cover axial through hole 1001 arranged in the oil middle cover and a middle cover transverse hole 1002 communicated with the middle cover axial through hole 1001, wherein the middle cover transverse hole 1002 is communicated with an upper transverse hole 401 b; the isolating piston 15 and the hydraulic oil are movably arranged in the second oil cylinder, one end of the reducing piston rod 16 is vertically connected with the surface of the isolating piston 15, and the other end of the reducing piston rod 16 can move relative to the axial through hole 1001 of the middle cover. Under the action of the gas pressure, the isolation piston 15 moves in the second oil cylinder to push the hydraulic oil to enter the oil through holes 401 through the middle cover axial through holes 1001 and the middle cover transverse holes 1002.
However, the low-pressure cylinder body can also adopt an oil cylinder under certain conditions, namely, under the condition that the oil return speed of hydraulic oil is low in the pressure release process.
As in the prior art, a pressure end cap 17 is also provided at the end of the metal can 2. A booster piston 21 which can move relative to the booster cylinder is arranged in the booster cylinder 3, a booster piston rod 25 is arranged on the surface of the booster piston 21, and the end part of the booster piston rod 25 for pressing a workpiece is positioned outside the booster cylinder 3.
Based on the consideration of cost and use convenience, the embodiment adopts the power piece 8 as a cylinder, and is fixedly connected with the connecting block 4; when the power piece 8 drives the valve rod 9 to extend out, the free end part of the valve rod passes through the first sealing ring 18, the inner wall of the first sealing ring 18 is attached to the outer wall of the free end part of the valve rod, and the longitudinal oil hole 401a is cut off; when the valve rod is retracted, the free end of the valve rod 9 is disengaged from the first seal ring 18, and the longitudinal oil hole 401a is opened. That is, when the valve rod 9 is extended or retracted, the closing or conduction of the longitudinal oil hole 401a, that is, the closing or conduction of the oil passage hole 401 is achieved, respectively.
Obviously, the power piece 8 can also adopt a servo motor, namely a motor and screw rod structure, the functions of the air cylinder and the valve rod can be realized, and the same effect is achieved, namely the screw rod is driven by the servo motor to stretch and retract relative to the longitudinal oil hole 401a, so that the oil hole 401 is closed or conducted.
One end of the longitudinal oil hole 401a is provided with a longitudinal oil hole end cover 19 fixedly connected with the connecting block 4, the other end of the longitudinal oil hole 401a is an inlet end of a free end part of the valve rod, at least one second sealing ring 20 connected with the inner wall of the longitudinal oil hole is arranged in the inlet end part along the radial direction, in a static state, the free end part of the valve rod is positioned in the inlet end part, and the free end part of the valve rod 9 is attached to the inner wall of the second sealing ring 20.
One end of the valve rod 9 is fixedly connected with the power piece, and the other end is a free end.
As shown in fig. 3-4, in order to control the speed, moving or stopping state of the booster piston 21 in the booster stage or the pressure release stage by changing the flow rate of the hydraulic oil, an oil bypass structure is further provided in the connection block 4, and the oil bypass structure includes a bypass longitudinal hole 22, a bypass upper transverse hole 23 and a bypass lower transverse hole 24; the bypass longitudinal hole is parallel to the longitudinal oil hole 401 a; one end of the bypass transverse hole is communicated with the bypass longitudinal hole 22, and the other end of the bypass transverse hole is communicated with the longitudinal oil hole 401 a; one end of the bypass lower transverse hole 24 is communicated with the bypass longitudinal hole 22, and the other end is communicated with the longitudinal oil hole 401 a; an opening 23a of the bypass cross hole on the inner wall of the longitudinal oil hole and an opening 24a of the bypass lower cross hole on the inner wall of the longitudinal oil hole are respectively positioned at two sides of the first sealing ring 18; there is a gap between the valve rod 9 and the inner wall of the longitudinal oil hole 401 a. With this structure, when the valve rod 9 is combined with the first seal ring 18 to seal the longitudinal oil hole 401a, hydraulic oil can enter the gap between the valve rod 9 and the inner wall of the longitudinal oil hole 401a through the bypass upper transverse hole 23, the bypass longitudinal hole 22 and the bypass lower transverse hole 24 respectively and is located in the side of the first seal ring 18 far away from the oil-gas isolation cylinder, that is, the position where the valve rod 9 is combined with the first seal ring 18 in the longitudinal oil hole 401a is avoided, at this time, because of the existence of the oil bypass structure, the pressure cylinder 3 and the oil-gas isolation cylinder can be conducted through the large-diameter section 101a, the transverse hole 102 and the oil bypass structure.
Also, to close or conduct the oil bypass structure, the oil bypass structure further includes a bypass power element 26, and a bypass valve stem 27 provided on the bypass power element; a third sealing ring 28 connected with the inner wall of the bypass longitudinal hole is arranged along the radial direction of the bypass longitudinal hole 22; the free end of the bypass valve rod 27 is positioned in the bypass longitudinal hole 22, the bypass power piece can drive the bypass valve rod 27 to stretch out and draw back relative to the bypass longitudinal hole 22, and in the extending process of the bypass valve rod, the free end of the bypass valve rod passes through the third sealing ring 28, and the inner wall of the third sealing ring is attached to the outer wall of the free end of the bypass valve rod and is used for closing the bypass longitudinal hole 22; when the bypass valve rod is retracted, the free end of the bypass valve rod is disengaged from the third seal ring and the bypass longitudinal bore 22 is open.
In this embodiment, the bypass power element 26 is a cylinder, and is fixedly connected with the connection block 4.
After the provision of the oil bypass structure, the control of the booster piston 21 may take place in the following manner in order to accommodate different production requirements: (1) The longitudinal oil hole 401a and the bypass longitudinal hole 22 are all closed, and the oil circuit between the oil gas isolation cylinder and the pressurizing cylinder is isolated, at the moment, the pressurizing piston 21 is stopped at a required position in the pressurizing process or the pressure relief process; (2) The longitudinal oil hole 401a is opened, the bypass longitudinal hole 22 is closed, the oil path between the oil-gas separation cylinder and the pressurizing cylinder is communicated through the longitudinal oil hole 401a, and at the moment, the pressurizing piston 21 and the hydraulic oil in the oil path keep a larger moving speed no matter in the pressurizing process or the pressure releasing process; (3) The longitudinal oil hole 401a is closed, the bypass longitudinal hole 22 is opened, the oil path between the oil-gas separation cylinder and the booster cylinder is communicated through the bypass longitudinal hole 22, and at the moment, the booster piston 21 and the hydraulic oil in the oil path keep a small moving speed no matter in the boosting process or the pressure releasing process; (4) The longitudinal oil hole 401a and the bypass longitudinal hole 22 are all opened, the oil path flow between the oil and gas separation cylinder and the booster cylinder is maximized, and at this time, the booster piston 21 and the hydraulic oil in the oil path maintain the maximum moving speed in both the boosting process and the pressure releasing process.
The "under the action of gas pressure" mentioned above means that the air hole a communicated with the pressure cylinder 3 is arranged in the lower end cover 29 of the pressure cylinder, the air hole B communicated with the metal cylinder 2 is arranged in the middle end cover 1, the air hole C communicated with the metal cylinder is arranged in the pressure end cover 17, the air hole D communicated with the second oil cylinder is arranged in the second end cover 14, and the air holes A, B, C, D are all connected with an air compressor and are respectively used for driving pistons at different positions to move through the pressure of gas.
During the pressurizing process, the valve rod 9 is retracted, the free end of the valve rod is separated from the first sealing ring 18, the oil through hole 401 is communicated, hydraulic oil in the oil-gas separation cylinder enters the pressurizing cylinder 3 through the oil through hole 401, the transverse hole 102 and the large-diameter section 101a of the axial through hole and contacts with one surface of the pressurizing piston, after the hydraulic oil entering the pressurizing cylinder 3 pushes the pressurizing piston 21 to reach a set position, for example, when one end of a pressurizing workpiece on the pressurizing piston rod 25 fixedly connected with the pressurizing piston contacts with the workpiece, the pressurizing piston is regarded as reaching the set position, then the power part 8 drives the valve rod 9 to extend, the free end of the valve rod is attached to the inner wall of the first sealing ring 18, the oil through hole 401 is closed, at the moment, a section (namely, the lower transverse hole 401 c) of the oil through hole 401, the large-diameter section 101a of the axial through hole and the pressurizing piston 21 in the pressurizing cylinder are communicated with each other, and under the action of gas pressure, the pressurizing piston 6 moves and drives the pressurizing rod 5 to move, and the pressurizing section 501 on the pressurizing piston enters the large-diameter section 101a, and the pressurizing piston 21 is driven to move, namely, the pressurizing piston 25 is fixedly arranged on the pressurizing piston 25 is moved and the pressurizing piston is rapidly; in the pressure relief process, the valve rod 9 is retracted, the free end of the valve rod is separated from the first sealing ring, the oil through hole 401 is conducted, the pressurizing piston 6 drives the pressurizing rod 5 to perform resetting motion under the action of gas pressure, meanwhile, the pressurizing piston 21 drives the pressurizing piston rod 25 to reset, in the process, for convenience of understanding, a section communicated with the transverse hole 102 on the large-diameter section is defined as a middle section a, a section communicated with the pressurizing cylinder 3 is defined as a pressurizing section b, if the pressurizing section 501 on the pressurizing rod is not completely separated from the pressurizing section b of the large-diameter section, hydraulic oil in the pressurizing cylinder 3 returns to the middle section a of the large-diameter section 101a through a gap between the pressurizing section 501 and the pressurizing section b of the large-diameter section 101a, and then returns to the oil-gas isolation cylinder through the transverse hole 102 and the oil through hole 401, so that the pressure relief process is completed.
In the foregoing description, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the connection may be direct or indirect via an intermediate medium, or may be internal communication between two components.
Although the present invention has been described by way of examples, one of ordinary skill in the art appreciates that there are many variations and modifications that do not depart from the spirit of the invention, and it is intended that the appended claims encompass such variations and modifications as fall within the spirit of the invention.
Claims (4)
1. The high-speed and oil-gas isolated gas-liquid booster cylinder comprises an oil-gas isolation cylinder, a middle end cover, a metal cylinder connected with one end of the middle end cover and a booster cylinder connected with the other end of the middle end cover; the axial through hole is arranged in the middle end cover and the transverse hole is communicated with the axial through hole, and the axial through hole is communicated with the pressurizing cylinder; the connecting block is arranged between the oil-gas isolation cylinder and the middle end cover, and the oil through hole is arranged in the connecting block and used for communicating the oil-gas isolation cylinder with the transverse hole; the pressurizing section is arranged at the other end of the pressurizing rod and integrally formed with the pressurizing rod, and can move along the axial through hole; the axial through hole is composed of a large-diameter section and a small-diameter section, a sealing ring connected with the inner wall of the small-diameter section is radially arranged in the small-diameter section, and the inner diameter of the large-diameter section is larger than the diameter of the pressurizing section; a first sealing ring connected with the inner wall of the oil through hole is arranged in the oil through hole along the radial direction of the oil through hole; the valve rod is arranged on the power piece, the free end part of the valve rod is positioned in the oil through hole, the power piece can drive the valve rod to stretch out and draw back relative to the oil through hole, the free end part of the valve rod penetrates through the first sealing ring in the extending process, and the inner wall of the first sealing ring is attached to the outer wall of the free end part of the valve rod and is used for closing the oil through hole; when the valve rod is retracted, the free end part of the valve rod is separated from the first sealing ring, and the oil through hole is communicated; in a static state, a pressurizing section on the pressurizing rod is positioned in the small-diameter section, and the sealing ring is attached to the outer wall of the pressurizing section;
the transverse hole is communicated with the large-diameter section of the axial through hole;
the oil through hole consists of a longitudinal oil hole, an upper transverse hole and a lower transverse hole, one end of the upper transverse hole is communicated with the longitudinal oil hole, and the other end of the upper transverse hole is communicated with the oil gas isolation cylinder; one end of the lower transverse hole is communicated with the longitudinal oil hole, and the other end of the lower transverse hole is communicated with the transverse hole;
an oil bypass structure is further arranged in the connecting block and comprises a bypass longitudinal hole, a bypass upper transverse hole and a bypass lower transverse hole; the bypass longitudinal hole is parallel to the longitudinal oil hole; one end of the bypass transverse hole is communicated with the bypass longitudinal hole, and the other end of the bypass transverse hole is communicated with the longitudinal oil hole; one end of the bypass lower transverse hole is communicated with the bypass longitudinal hole, and the other end of the bypass lower transverse hole is communicated with the longitudinal oil hole; the opening of the bypass cross hole on the inner wall of the longitudinal oil hole and the opening of the bypass lower cross hole on the inner wall of the longitudinal oil hole are respectively positioned at two sides of the first sealing ring; a gap is formed between the valve rod and the inner wall of the longitudinal oil hole;
the device further comprises a bypass power piece and a bypass valve rod arranged on the bypass power piece; a third sealing ring connected with the inner wall of the bypass longitudinal hole is radially arranged along the bypass longitudinal hole; the free end of the bypass valve rod is positioned in the bypass longitudinal hole, the bypass power piece can drive the bypass valve rod to stretch out and draw back relative to the bypass longitudinal hole, the free end of the bypass valve rod passes through the third sealing ring in the extending process, and the inner wall of the third sealing ring is attached to the outer wall of the free end of the bypass valve rod and is used for closing the bypass longitudinal hole; when the bypass valve rod is retracted, the free end of the bypass valve rod is separated from the third sealing ring, and the bypass longitudinal hole is communicated.
2. The high-speed and oil-gas isolated gas-liquid booster cylinder of claim 1, wherein the power member is a cylinder fixedly connected with the connecting block; the first sealing ring is arranged in the longitudinal oil hole, the free end part of the valve rod can axially move relative to the longitudinal oil hole, and when the power piece drives the valve rod to extend out, the free end part of the valve rod penetrates through the first sealing ring, the inner wall of the first sealing ring is attached to the outer wall of the free end part of the valve rod, and the longitudinal oil hole is cut off; when the valve rod is retracted, the free end part of the valve rod is separated from the first sealing ring, and the longitudinal oil hole is communicated.
3. The high-speed and oil-gas-isolated gas-liquid booster cylinder as defined in claim 2, wherein one end of the longitudinal oil hole is provided with a longitudinal oil hole end cover fixedly connected with the connecting block, the other end is an inlet end of a free end part of the valve rod, at least one second sealing ring connected with the inner wall of the longitudinal oil hole is radially arranged in the inlet end part, and in a static state, the free end part of the valve rod is positioned in the inlet end part, and the free end part of the valve rod is attached to the inner wall of the second sealing ring.
4. The high-speed and oil-gas-isolated gas-liquid booster cylinder of claim 1 wherein the bypass power element is a cylinder fixedly connected to the connecting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910740400.9A CN110345112B (en) | 2019-08-12 | 2019-08-12 | High-speed and oil-gas isolated gas-liquid booster cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910740400.9A CN110345112B (en) | 2019-08-12 | 2019-08-12 | High-speed and oil-gas isolated gas-liquid booster cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110345112A CN110345112A (en) | 2019-10-18 |
| CN110345112B true CN110345112B (en) | 2024-04-12 |
Family
ID=68184750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910740400.9A Active CN110345112B (en) | 2019-08-12 | 2019-08-12 | High-speed and oil-gas isolated gas-liquid booster cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110345112B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0914208A (en) * | 1995-07-03 | 1997-01-14 | Hitachi Metals Ltd | Boosting actuator |
| FR2893372A1 (en) * | 2005-10-13 | 2007-05-18 | Zf Friedrichshafen Ag Ag | SWITCH VALVE FOR ACTUATING A CLUTCH |
| CN203272272U (en) * | 2013-04-26 | 2013-11-06 | 谢国辉 | Ultrahigh pressure supercharger |
| CN103982474A (en) * | 2014-05-28 | 2014-08-13 | 苏州艾酷玛赫设备制造有限公司 | Novel pressurized oil-air cylinder |
-
2019
- 2019-08-12 CN CN201910740400.9A patent/CN110345112B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0914208A (en) * | 1995-07-03 | 1997-01-14 | Hitachi Metals Ltd | Boosting actuator |
| FR2893372A1 (en) * | 2005-10-13 | 2007-05-18 | Zf Friedrichshafen Ag Ag | SWITCH VALVE FOR ACTUATING A CLUTCH |
| CN203272272U (en) * | 2013-04-26 | 2013-11-06 | 谢国辉 | Ultrahigh pressure supercharger |
| CN103982474A (en) * | 2014-05-28 | 2014-08-13 | 苏州艾酷玛赫设备制造有限公司 | Novel pressurized oil-air cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110345112A (en) | 2019-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102497763B1 (en) | Flow passage switching unit | |
| KR101655420B1 (en) | Hydraulic Power Cylinder with Booser Pump Equipment | |
| CN102261283B (en) | Fixed chain-type engine brake device | |
| US9038431B2 (en) | Hydraulic cylinder for a hydraulic drawing cushion | |
| CN101363459A (en) | Hydro-pneumatic pressure transformation device and method for operation | |
| JPH06213202A (en) | Hydraulic intensifier | |
| CN101725580A (en) | Hydraulic pressure cylinder | |
| KR100917070B1 (en) | The intensifying device with booster | |
| CN108603521B (en) | Synchronous cylinder for continuous pressing equipment | |
| CN110573750B (en) | Supercharging device and cylinder device provided with same | |
| JPH0570722B2 (en) | ||
| CN110345112B (en) | High-speed and oil-gas isolated gas-liquid booster cylinder | |
| CN108425665B (en) | A kind of fracturing pump of hydraulic-driven | |
| CN210509775U (en) | High-speed and oil-gas isolated gas-liquid pressure cylinder | |
| JP3022551B1 (en) | Cylinder device | |
| CN213451113U (en) | Multi-output hydraulic driving device | |
| CN108533565B (en) | Hydraulic transmission mechanism and servo numerical control hydraulic rapid punching machine with same | |
| CN210829920U (en) | Electric auxiliary type pressure cylinder | |
| KR20210127640A (en) | Fluid pressure cylinder | |
| CN208565130U (en) | A kind of hydraulic cylinder | |
| CN103415710A (en) | Multiple-stage fluid operated actuator | |
| CN214788273U (en) | Supercharging mechanism for hydraulic machine | |
| CN216382013U (en) | Pressure system of semiconductor bonding equipment | |
| CN113819106B (en) | Mechanical automatic reversing valve and use method thereof | |
| CN115727033B (en) | Bidirectional rapid energy-saving efficient hydraulic cylinder and application method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240312 Address after: 516000 Factory Building 23 # 101, 25 # 101, 25 # 201, No. 6 Xinhua Avenue, Chenjiang Street, Zhongkai High tech Zone, Huizhou City, Guangdong Province Applicant after: Guangdong Zhongjin High Tech Co.,Ltd. Country or region after: China Address before: 518000 1st floor, building 2, huidebao Industrial Park, south side of great outer ring road, Guangming Street, Guangming New District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN MINGYE PRECISION ELECTROMECHANICAL EQUIPMENT Co.,Ltd. Country or region before: China |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant |