KR200463523Y1

KR200463523Y1 - Superhigh speed hydraulic piston cylinder

Info

Publication number: KR200463523Y1
Application number: KR2020110003823U
Authority: KR
Inventors: 최병관
Original assignee: 최병관
Priority date: 2011-05-04
Filing date: 2011-05-04
Publication date: 2012-11-07

Abstract

The present invention relates to an ultra-high speed hydraulic piston cylinder improved to realize an ultra-high operating speed, and a forward inflow pipe and a reverse inflow pipe are formed to receive a fluid, and correspondingly, the forward outflow pipe and the reverse outflow pipe for fluid discharge are correspondingly formed. A valve body in which the pipe is formed; A pair of servo valves for selectively supplying the fluid supplied from the outside to the forward inflow pipe and the reverse inflow pipe, and selectively receiving the fluid from the forward outflow pipe and the backward outflow pipe and discharging them to the outside; A cylinder communicating with the forward inflow pipe and the forward outflow pipe at a rear end of the inner space where a piston is accommodated, and communicating with the backward inflow pipe and the backward outflow pipe at a front end via an extension flow path formed along a length direction; A center bar fixed along a central axis in the inner space of the cylinder; And a contact support ground portion inserted into the inner space of the cylinder and guided by the center bar by reciprocating along the cylinder while the center bar is inserted into the hollow extending in the axial direction and being surface-contacted to the center bar at a rear end thereof. And a piston rod part which is guided in a state spaced apart from the center bar at a minute interval from the front to the front end of the contact ground part, and is provided between the contact ground part and the piston rod part to be in contact with the fluid through the forward inflow pipe. And a piston having a piston bundle having a pressing surface and a backward pressing surface contacting with the fluid through the reverse inlet pipe.

Description

Super Speed Hydraulic Piston Cylinder {SUPERHIGH SPEED HYDRAULIC PISTON CYLINDER}

The present invention relates to a hydraulic piston cylinder that enables ultra-high speed piston movement using hydraulic pressure as a driving source.

In general, a hydraulic apparatus using a fluid as a driving source exhibits a great force, but is used in a relatively low speed driving environment, and thus has a problem in that it is difficult to apply under high speed working conditions.

In the conventional general hydraulic piston cylinder constituting the basic configuration of the hydraulic device, this is a fundamental limitation of the operating speed in terms of the principle of pressurizing and moving the piston surface according to the amount of fluid flowing into the cylinder to fill the cylinder. It is due to no situation.

However, according to various machine configurations and working conditions that meet various demands, relatively large operating force has to be exerted and high speed operation has been required. Therefore, the conventional hydraulic piston cylinder was not covered. There is a need for hydraulic piston cylinders that operate at very high speeds for applications.

An object of the present invention is to provide an ultra-high speed hydraulic piston cylinder improved to realize an ultra-high operating speed.

In order to achieve the above object of the present invention, in the ultra-high speed hydraulic piston cylinder, a forward inflow pipe and a backward inflow pipe for receiving a fluid are formed, and a forward outflow for discharging fluid in response to the forward hydraulic pipe and the reverse inflow pipe A valve body in which the pipe and the reverse outflow pipe are formed; A pair of servovalve controlled to selectively supply the fluid supplied from the outside to the forward inflow pipe and the reverse inflow pipe, and to selectively receive the fluid from the forward outflow pipe and the backward outflow pipe and discharge the fluid to the outside; The reverse inflow pipe and the reverse outflow pipe are communicated with the forward inflow pipe and the forward outflow pipe at the rear end of the inner space in which the piston is accommodated, and at the front end of the internal space via an extension flow path formed along the longitudinal direction. A cylinder in communication with the tube; A center bar fixed along a central axis in the inner space of the cylinder; And a contact support ground portion inserted into the inner space of the cylinder and guided by the center bar by reciprocating along the cylinder while the center bar is inserted into the hollow extending in the axial direction and being surface-contacted to the center bar at a rear end thereof. And a piston rod part which is guided in a state spaced apart from the center bar at a minute interval from the front to the front end of the contact ground part, and is provided between the contact ground part and the piston rod part to be in contact with the fluid through the forward inflow pipe. It provides an ultra-high-speed hydraulic piston cylinder comprising a piston formed with a piston bunch having a pressing surface and a backward pressing surface in contact with the fluid through the reverse inlet pipe.

Here, one or more sealing members are installed on the inner circumferential surface of the contact support ground portion to surround the center bar, and the center bar is provided with one or more sealing and guide members on the outer circumferential surface of the front end portion to support and support the inner circumferential surface of the piston rod portion. You may.

The ultra-high speed hydraulic piston cylinder includes: a guide post reciprocally sliding integrally with the piston from the outside of the cylinder via a clamp mounted at the front end of the piston rod portion; It may further include a guide bush which is fixed to the outside of the front end of the cylinder is inserted into the guide post guide.

In addition, the ultra-high speed hydraulic piston cylinder is a pair of hinge pins are installed symmetrically on both sides of the valve body and a hinge pin flow path for the fluid movement in the longitudinal direction therein is in communication with the interior of the valve body; The hinge channel is rotatably coupled to the pair of hinge pins, respectively, and a bracket channel for moving the fluid in a longitudinal direction is further included, and further includes a pair of hinge brackets communicating with the hinge pin channel. A pair of sealing members may be installed at both sides of the hinge pin flow path on the inner circumferential surface of the hinge pin to prevent leakage of fluid moving between the hinge pin flow path and the bracket flow path.

According to the ultra-high speed hydraulic piston cylinder according to the present invention, the fluid inflow into the cylinder by forming a hollow piston having a piston rod guided by the center bar in the cylinder in which the forward inlet pipe and the backward inlet pipe through the extension passage are formed; Ultra-fast drive of the piston by outflow can be achieved.

1 is a front view of an ultra-high speed hydraulic piston cylinder according to an embodiment of the present invention,
Figure 2 is a side view of the ultra-high speed hydraulic piston cylinder of Figure 1,
3 is a view showing a state in which the piston slides protruding from the ultra-high speed hydraulic piston cylinder of FIG.
4 is a plan view of the ultra-high speed hydraulic piston cylinder of FIG.
5 is a view for explaining the operation of the ultra-high speed hydraulic piston cylinder of FIG.

Ultra-high speed hydraulic piston cylinder 100 according to an embodiment of the present invention, as shown in Figures 1 to 3, the valve body 110 is formed with various tubes for the movement of the fluid therein, the valve body 110 A pair of servo valves 120 and 130 installed above and below the cylinder 140, one end of which is inserted into the valve body 110, and a center bar 150 inserted into the inner space of the cylinder 140. It is configured to include a hollow piston 160 that is inserted into the inner space of the cylinder 140 and receives the center bar 150.

The valve body 110 has a forward inflow pipe 111 and a reverse inflow pipe 112 that receive fluid from the servo valve 120 at an upper side thereof, and a reverse outflow pipe for discharging the fluid inside the symmetrical side thereof. 113 and the forward outflow pipe 114 is formed.

The upper servo valve 120 is controlled to selectively supply the fluid supplied from the outside to the forward inlet pipe 111 or the reverse inlet pipe 112 of the valve body 110.

The lower servovalve 130 is controlled to selectively receive fluid from the backward outflow tube 113 or the forward outflow tube 114 of the valve body 110 to discharge to the outside.

The cylinder 140 has a rear end portion of the cylindrical inner space S communicating with the forward inflow pipe 111 and the backward outflow pipe 113 and along the longitudinal direction of the inner space S (the right side in FIG. 1). At the end), the tip inlet 141 and the tip outlet 142 are extended.

The tip inlet 141 and the tip outlet 142 are respectively connected to the reverse inlet pipe 112 and the forward outlet pipe 114 via extension passages 143 and 144 formed along the longitudinal direction of the cylinder 140. Communicating.

Accordingly, the piston 160 slides forward (right) by the fluid flowing from the forward inlet pipe 111, and the fluid located in front of the piston 160 is the front outlet 142 and the extension passage 144. Through the outflow pipe 114 and the servo valve 130 is discharged to the outside.

In addition, the piston 160, which has been slid forward (right) by the fluid flowing from the inflow inlet pipe 112, is retracted backwards and the fluid which is located behind the piston 160 is the backward outflow pipe 113. And is discharged to the outside through the servo valve 130.

The center bar 150 has its left rear end fastened to the valve body 110 so as to be fixed along the center axis in the internal space S of the cylinder 140.

The hollow shaft piston 160 is inserted into the inner space (S) of the cylinder 140, the center bar 150 is inserted into the hollow inner space of its own, and thus the center bar 150 Guided along, it is provided to reciprocate back and forth.

Particularly, the piston 160 forms a contact support ground portion 161 in which only a part of the rear end portion (the right end portion in the drawing) is in surface contact support on the center bar 150, and the inner center bar portion is formed on the remaining inner surface portion except for the same. 150 to form a spaced apart surface 162 spaced apart.

A piston bundle 163 is formed in front (right side) of the contact ground surface portion 161, and the outer circumferential surface thereof is in surface contact with the inner circumferential surface of the cylinder 140.

The piston bundle 163 is formed with pressing surfaces 164 and 165 in front and rear ends in contact with the fluid, and the fluid flowing into the cylinder 140 through the forward inlet pipe 111 as the forward pressing surface 164 at the rear end. The contact force is applied to generate the propulsion force forward.

The reverse pressurizing surface 165 of the front end is contacted and pressurized by the fluid flowing into the cylinder 140 through the reverse inflow pipe 112, the extension flow path 143, and the tip inlet 141, and the driving force to the rear is applied. Generate.

The piston rod 166 is extended to the front (right side) of the piston bundle 163 and slides back and forth in a state in which the inner side of the center bar 150 is spaced apart from each other through the separation surface 162.

According to the configuration of the piston 160 as described above it is possible to minimize the frictional force with the center bar 150, thereby enabling ultra-high speed slide movement when the hydraulic action.

Meanwhile, at least one sealing member 167 is installed on the inner circumferential surface of the contact support ground part 161 to surround the inner center bar 150, thereby enhancing the prevention of fluid movement through a gap during high speed movement.

In addition, at the center bar 150 side, one or more grooves are formed on the outer circumferential surface of the front end portion thereof to install the sealing and guide members 151, respectively, to contact and support the inner circumferential surface of the piston 160 spaced at a small interval due to the spaced surface 162. Do it.

According to the configuration of the cylinder 140 and the piston 160 as described above, by maximizing the amount of movement of the piston 160 according to the unit flow rate by minimizing the internal space of the cylinder 140 together with the hollow piston 160 configuration That is, the piston 160 can be speeded up.

The hollow piston 160 greatly reduces the size of the moving medium as well as greatly reduces the internal space of the cylinder 140, thereby greatly contributing to the achievement of the above speed.

Meanwhile, the clamp 171, the guide post 172, and the guide bush 173 may be further provided for more stable support of the piston 160 which slides at an extremely high speed.

The clamp 171 is mounted at the lower end thereof at the front end of the piston rod 166 (right end in FIG. 1), and is integrally installed at the upper end thereof so that the guide post 172 extends rearward.

The guide bush 173 is relatively fixed to the front end of the cylinder 140 so that the guide post 172 is inserted and slides back and forth.

On the other hand, in the ultra-high speed hydraulic piston cylinder 100 according to an embodiment of the present invention, as shown in Figures 2 to 4, a pair of hinge pins (180, 190) are symmetrical to both left and right sides of the valve body (110). Is inserted into the installation.

Hinge pin passages 181 and 191 are formed in the hinge pins 180 and 190 to move the fluid in the longitudinal direction thereof.

In addition, one end of each pair of hinge brackets 200 and 210 is rotatably coupled to the hinge pins 180 and 190.

Flow paths 201 and 211 are also formed inside the hinge brackets 200 and 210 for movement of the fluid in the longitudinal direction, and these flow paths 201 and 211 are hinge pins on the hinge pins 180 and 190, respectively. It communicates with the flow paths 181 and 191.

As a result, the fluid supplied from the hinge bracket 200 flows into the valve body 110 through the passage pin 201 and the hinge pin passage 181 of the hinge pin 180.

The fluid introduced into the valve body 110 flows into the servo valve 120 through the outlet (115 of FIG. 2) and is then controlled to flow into the forward inflow pipe (111 in FIG. 1) or the reverse inflow pipe 112. do.

On the other hand, the fluid discharged from the backward outflow pipe 113 or the forward outflow pipe 114 of the valve body 110 is introduced into the recovery port (116 of FIG. 2) from the servo valve 130 and then the other hinge pin 190 It is discharged to the outside through the hinge pin passage 191 and the hinge bracket 210 (see FIG. 4) side flow path 211 in communication with it.

At this time, as shown in Figure 2, in order to prevent the fluid leakage between the hinge pins 180, 190 and the hinge brackets 200, 210 rotatably coupled thereto, the hinge pins 181, 191 and A pair of sealing members 182 and 192 are installed on the inner circumferential surface of each of the hinge pins 180 and 190 corresponding to both sides of the flow passage 201 and 211.

According to the coupling relationship between the hinge pins 180 and 190 and the hinge brackets 200 and 210, the fluid between the two can be moved and the hinge brackets 200 and 210 can be moved as shown in FIG. It is possible to adjust the rotation of the body parts 110 to 173 of the ultra-high speed hydraulic piston cylinder 100.

On the other hand, the ultra-high speed hydraulic piston cylinder 100 described above is only one embodiment to help the understanding of the present invention is not to be understood that the scope of the present invention is limited to the scope of the present invention.

The scope of rights and technical scope of the present invention are determined by the scope of claims for utility model registration described below and the equivalents thereof.

100: ultra-high speed hydraulic piston cylinder 110: valve body
111: forward inflow pipe 112: backward inflow pipe
113: reverse outflow tube 114: forward outflow tube
115: outlet 116: recovery port
120, 130: servo valve 140: cylinder
141: tip inlet 142: tip outlet
143, 144: Euro 150: Centerbar
151: sealing and guide member 160: piston
161: contact ground portion 162: separation surface
163: piston bundle 164: forward pressure surface
165: reverse pressure surface 166: piston rod
171: clamp 172: guide post
173: guide bush

Claims

In the high speed hydraulic piston cylinder,
A valve body having a forward inflow pipe and a reverse inflow pipe for receiving the fluid, and a reverse outflow pipe and a forward outflow pipe for discharging the fluid corresponding to the forward hydraulic pipe and the reverse inflow pipe;
A pair of servovalve controlled to selectively supply the fluid supplied from the outside to the forward inflow pipe and the reverse inflow pipe, and to selectively receive the fluid from the backward outflow pipe and the forward outflow pipe and discharge the fluid to the outside;
The backward inflow pipe and the forward outflow pipe are communicated with the forward inflow pipe and the backward outflow pipe at the rear end of the inner space where the piston is accommodated, and at the front end of the inner space via an extension flow path formed along the longitudinal direction. A cylinder in communication with the tube;
A center bar fixed along a central axis in the inner space of the cylinder; And
A contacting ground portion which is inserted into the inner space of the cylinder and guided by the center bar by reciprocating and sliding along the cylinder in a state in which the center bar is inserted into the hollow extending in the axial direction and being surface-contacted to the center bar at a rear end thereof; And a piston rod part which is guided in a state spaced apart from the center bar at a minute interval from the front of the contact ground part to the front end, and the forward pressure is provided between the contact ground part and the piston rod part to be in contact with the fluid through the forward inlet pipe. And a piston having a piston bundle having a back and forth pressure surface in contact with a fluid through the reverse inlet pipe.

The method of claim 1,
The piston is provided with one or more sealing members on the inner circumferential surface of the contact support ground portion to surround the center bar,
The center bar is at least one sealing and guide member is installed on the outer peripheral surface of the front end ultra-high speed hydraulic piston cylinder, characterized in that for supporting the inner peripheral surface of the piston rod portion.

The method of claim 1,
A guide post reciprocally sliding integrally with the piston from the outside of the cylinder via a clamp mounted at the front end of the piston rod;
Ultra fast hydraulic piston cylinder, characterized in that it further comprises a guide bush which is fixed to the outside of the front end of the cylinder is inserted into the guide post.

The method of claim 1,
A pair of hinge pins symmetrically installed on both sides of the valve body and having a hinge pin flow path formed therein for moving the fluid in a longitudinal direction, and communicating with the inside of the valve body;
It further includes a pair of hinge brackets rotatably coupled to the pair of hinge pins, respectively, and having a bracket channel for moving fluid in a longitudinal direction therein to communicate with the hinge pin channel.
The hinge bracket is provided with a pair of sealing members on both sides of the hinge pin flow path on the inner circumferential surface of the hinge pin to prevent leakage of fluid moving between the hinge pin flow path and the bracket flow path. Ultra high speed hydraulic piston cylinder.