WO2011150722A1

WO2011150722A1 - Piston-type speed controller

Info

Publication number: WO2011150722A1
Application number: PCT/CN2011/072715
Authority: WO
Inventors: 何少敦
Original assignee: He Shaodun
Priority date: 2010-06-05
Filing date: 2011-04-13
Publication date: 2011-12-08
Also published as: CN102012707B; CN102012707A

Abstract

A piston-type speed controller comprises flow medium (4), a piston (2), piston rods, a piston cylinder (3), a piston cylinder head and a sealing component. The piston (2) has two piston rods, wherein a flow through hole or a flow through gap is provided in each piston rod. The flow through holes or the flow through gaps in the two piston rods are communicated with each other and form a medium flowing throttle pipe. When the piston (2) moves, flow medium (4) sequentially flows into the medium flowing throttle pipe through the flow through hole or the flow through gap in one piston rod, and then flows out of the medium flowing throttle pipe through the flow through hole or the flow through gap in the other piston rod, and flows into the other side of the piston (2). The controller has a simple structure and reduces the production cost.

Description

Piston speed controller

Technical field

The present invention relates to a speed controller, and more particularly to a piston speed controller.

Background technique

The piston type speed controller controls the speed of the piston operation by controlling the flow rate of the medium flowing through the bleed hole. The known piston type speed controller includes a flow medium, a piston, a piston rod, a piston cylinder, a piston cylinder end, and the like. The sluice chamber and the sealing member are arranged on the piston cylinder body along the length direction. When the piston moves, the flowing medium flows from the piston cylinder into the outer sluice chamber through the bleed hole or into the piston cylinder from the outer sluice chamber. By controlling the flow rate of the medium, the speed at which the piston is operated is realized. The problem is that today's piston type speed controllers require large external flow chambers, so that the processing of parts is difficult and the manufacturing cost is high.

Summary of the invention

In order to overcome the shortcomings of today's piston type speed controllers, which require the installation of an external flow chamber, which results in difficulty in processing parts and high manufacturing costs, the present invention provides a piston type speed controller including a flow medium, a piston, and a piston rod. Piston cylinder, piston cylinder end and seal, the discharge hole is arranged on the piston. When the piston moves, the flowing medium flows from one side of the piston into the other side of the piston through the discharge hole, by controlling the discharge hole The area is used to control the flow rate of the medium, thereby achieving the purpose of controlling the running speed of the piston. Therefore, the piston type speed controller proposed by the present invention does not need to provide an external flow chamber, and thus the parts are easy to process and the manufacturing cost is low.

The technical solution adopted by the present invention to solve the technical problem thereof is as follows: The piston type speed controller proposed by the invention mainly comprises a flowing medium, a piston, a first piston rod and a second piston rod, a piston cylinder, a first piston cylinder end and a second piston cylinder end, a fixing seat, a rod end connecting member, and a first piston cylinder end seal, a second piston cylinder end seal and a piston seal, and a piston seal is disposed on the piston, in the first piston cylinder A sealing member is respectively disposed in the end of the end and the second piston cylinder, and the piston is respectively fixedly connected with the first piston rod and the second piston rod, and the piston cylinder passes through the first piston cylinder end and the second piston cylinder end disposed at both ends The flowing medium is sealed inside the cylinder, the piston is disposed inside the piston cylinder, and the first piston rod and the second piston rod are respectively passed out from the first piston cylinder end and the second piston cylinder end, and are fixed on the outside of the cylinder body. a rod end connector is mounted at the end of the first piston rod, wherein the piston has a first piston rod and a second piston rod, and the first piston rod through hole is disposed on the first piston rod Or a first piston rod flow gap, a second piston rod through hole or a second piston rod through gap is disposed on the second piston rod, the first piston rod through hole or the first piston rod through gap The second piston rod through-flow hole or the second piston rod through-flow gap communicate with each other to form a medium circulation throttle pipe. When the piston moves, the flowing medium sequentially flows from a through hole or a through-flow gap of one piston rod, and then from another The through hole or through gap of a piston rod flows out to the other side of the piston.

The invention also proposes a subordinate solution, characterized in that the flow area on the piston rod can be adjusted to achieve the operating speed of the adjusting piston rod, so that at least one of the two piston rods can be along the piston rod The axis rotates and the flow area of the medium circulation throttle pipe is changed by rotation, and the connection type thereof may preferably be a matching type of the pin shaft and the pin groove.

The beneficial effects of the present invention are that the parts are easy to process and the manufacturing cost is low since there is no need to provide an external flow chamber. DRAWINGS

1, 2, and 3 are schematic views showing the structure of the first embodiment of the present invention.

Figure 4 is a schematic view showing the structure of a second embodiment of the present invention.

5, 6, and 7 are schematic views showing the structure of a third embodiment of the present invention.

8 and 9 are schematic views showing the structure of a fourth embodiment of the present invention.

10 and 11 are schematic views showing the structure of a fifth embodiment of the present invention.

12 to 18 are schematic views showing the structure of a sixth embodiment of the present invention.

19 to 22 are schematic views showing the structure of a seventh embodiment of the present invention.

Figure 23 is a schematic view showing the structure of an eighth embodiment of the present invention.

Figure 24 is a schematic view showing the structure of a ninth embodiment of the present invention.

Figure 25 is a schematic view showing the structure of a tenth embodiment of the present invention.

In the figure: 1A first piston rod, 1B second piston rod, 1A1 first piston rod through hole, 1B1 second piston rod through hole, 1A1 K 1B11 rod through hole, 1A2 first piston rod through flow gap , 1B2 second piston rod flow clearance, 2 piston, 2A, 2B, 2C piston through hole, 2D pin groove, 2E piston seal, 2F one-way wide, 3 piston cylinder, 3A1 first piston cylinder end, 3A2 second piston cylinder end, 3A11 first piston cylinder end seal, 3A21 second piston cylinder end seal, 4 flow medium, 5. mount, 6 rod end connector, 7A, 7B pin, 8 Retaining ring, 9 rotating parts, 10 elastic parts, 11 anti-collision head.

detailed description

Figure 1, Figure 2, Figure 3 is a schematic view of the structure of the first embodiment of the present invention, Figure 1 is a schematic view of the structure of the present embodiment, Figure 2 is a partial view of the embodiment, Figure 3 is a cross-sectional view of Figure 2, It is shown that the piston type speed controller of the embodiment mainly includes a flowing medium 4, a piston 2, a first piston rod 1A and a second piston rod 1B, a piston cylinder 3, a first piston cylinder end 3A1 and a second piston cylinder end. a head 3A2, a fixing base 5, a rod end connecting member 6, a first piston cylinder end seal 3A11, a second piston cylinder end seal 3A21 and a piston seal 2E, and a piston seal 2E is provided on the piston 2, the piston 2 is fixedly connected to the first piston rod 1A and the second piston rod 1B through the pins 7A and 7B, respectively, and the piston cylinder 3 passes the flow medium 4 through the first piston cylinder end 3A1 and the second piston cylinder end 3A2 disposed at both ends. Sealed inside the cylinder 3, the piston 2 is disposed inside the piston cylinder 3, and the first piston rod 1A and the second piston rod 1B are pierced from the piston cylinder end, at the first piston cylinder end 3A1, the second piston cylinder end The first piston cylinder end seal 3A11 and the second piston cylinder are respectively disposed in the head 3A2 The head seal 3A21 causes the flow medium 4 not to leak when the piston 2 moves, and the piston 2 has a first piston rod 1A and a second piston rod 1B, respectively on the first piston rod 1A and the second piston rod 1B. The first piston rod through hole 1A1 and the second piston rod through hole 1B1 are provided. Further, the first piston rod 1A and the second piston rod 1B are respectively provided with in-rod through holes 1A11, 1B11, and the piston 2 The piston through holes 2A, 2B are respectively disposed, and thus, the piston through hole 2A, the first piston rod through hole 1A1, the in-rod through hole 1A11, the in-rod through hole 1B11, and the second piston rod flow The hole 1B1 and the piston through hole 2B are sequentially connected to each other to constitute a medium circulation throttle pipe. When the piston 2 moves, the flow medium 4 flows from one side of the piston 2 through the circulation pipe. The other side of the plug;

In this embodiment, the flow passage area of the medium circulation throttle pipe is fixed;

In this embodiment, a fixing seat 5 is disposed outside the piston cylinder 3, and a rod end connecting member 6 is further disposed at the end of the first piston rod 1A. In the embodiment, the fixing base 5 is a structural schematic view. The mounting method of the present invention is improved with reference to the mounting method of the existing piston; in the present embodiment, the connection and fixing of the piston 2 with the first piston rod 1A and the second piston rod 1B are respectively achieved by the pins 7A and 7B, The present invention suggests that the piston and the piston rod can be mounted and fixed in other conventionally known mounting forms. The invention indicates that the connection between the piston ends 3A1, 3A2 and the piston cylinder 3 can be carried out by the currently known mounting method, and the fifth edition of the "Mechanical Design Manual" published by Cheng Daxian, editor of the Chemical Industry Press. Volume 5, Chapter 6, Parts 4 and 5, discloses the general structure of the hydraulic cylinder; the oil port of the piston is mainly used to refuel the piston and then seal the oil inside the piston with a plug. The mechanical configuration manual fifth edition, volume 5, part 5, 5.8 has a public description of the structure and position of the oil port, and the present invention will not be specifically described in the disclosure.

Figure 4 is a schematic view showing the structure of the second embodiment of the present invention. The figure shows that, unlike the first embodiment, in the present embodiment, the first piston rod through hole 1A1, the in-rod through hole 1A11, The rod inner through hole 1B11, the second piston rod through hole 1B1 and the piston through hole 2B are sequentially connected to constitute a medium circulation throttle pipe, and when the piston 2 moves, the flow medium 4 flows into the piston from one side of the piston 2 through the circulation pipe. The other side.

5, FIG. 6, and FIG. 7 are schematic views showing the structure of a third embodiment of the present invention, wherein FIG. 6 is a cross-sectional view of FIG. 5, and FIG. 7 is a perspective view of the part, which is different from the first embodiment. In this embodiment, the piston through-flow hole 2A, the first piston rod through-flow gap 1A2, the second piston rod through-flow gap 1B2, and the piston through-flow hole 2B are sequentially connected to form a medium circulation throttle pipe, when the piston 2 moves The flowing medium 4 flows from one side of the piston 2 to the other side of the piston through the flow conduit.

8 and 9 are schematic views showing the structure of a fourth embodiment of the present invention, wherein Fig. 9 is a cross-sectional view of Fig. 8, showing that, unlike the first embodiment, in the present embodiment, the first piston The rod throughflow gap 1A2 and the second piston rod throughflow gap 1B2 communicate to form a medium flow restriction conduit. When the piston 2 moves, the flow medium 4 flows from one side of the piston 2 to the other side of the piston through the flow conduit.

10 and FIG. 11 are schematic views showing the structure of a fifth embodiment of the present invention, wherein FIG. 11 is a cross-sectional view of FIG. 10, showing that, unlike the first embodiment, in the present embodiment, the first piston The rod through-flow gap 1A2, the piston through-flow hole 2C, and the second piston rod through-flow gap 1B2 are sequentially connected to form a medium circulation throttle pipe. When the piston 2 moves, the flow medium 4 flows into the piston from one side of the piston 2 through the circulation pipe. 12 to 18 are schematic views of the structure of the sixth embodiment of the present invention, and Fig. 12 is a partial structural view of the present embodiment, and Figs. 13 to 18 are partial views of the present embodiment, wherein Fig. 14 is a cross-sectional view of Fig. 13. 15 to 18 are schematic views of the second piston rod 1B as it rotates, and it is shown that, unlike the first embodiment, in the present embodiment, the piston 2 is first and the first through the pins 7A and 7B, respectively. The piston rod 1A and the second piston rod 1B are fixedly connected, and the piston 2 is provided with a pin groove 2D. The pin shaft 7B is located in the pin shaft groove 2D, and the pin shaft 7B and the pin shaft groove 2D cooperate with each other to make the second piston The rod 1B can rotate along the axis but cannot move the axis, When the piston rod 1B rotates, the pin shaft 7B follows the rotation. As shown in FIGS. 14 to 16, the rotation range of the pin shaft 7B is restricted by the pin shaft groove 2D, and the other end of the second piston rod 1B is further provided with the rotating member 9, which is twisted. The rotating member 9 can rotate the second piston rod 1B. In the embodiment, the piston through hole 2A and the first piston rod through hole 1A1. The in-rod through hole 1A11, the in-rod through hole 1B11, the second piston rod through hole 1B1 and the piston through hole 2B are sequentially communicated to constitute a medium circulation throttle pipe, and in FIGS. 17 to 18, when the second piston rod When 1B rotates, the second piston rod through hole 1B1 and the piston through hole 2B are misaligned, thereby changing the flow passage area of the medium circulation throttle pipe, thereby adjusting the operating speed of the piston rod;

In the sixth embodiment, the connection between the piston 2 and the second piston rod 1B is fixed by the pin 7B, the pin 7B is fixed to the second piston rod 1B and the pin groove 2D is provided on the piston 2. The invention also suggests that the pin and the pin groove can be offset, that is, the pin can be fixed on the piston and the pin groove is disposed on the piston rod, the pin is located in the pin groove, and the pin and the pin groove cooperate with each other; When the piston rod rotates, the pin groove rotates, and the range of rotation of the piston rod is limited by the pin shaft.

The present invention suggests that the features of the medium flow restricting conduit in the second, third or fifth embodiment can be applied to the sixth embodiment.

19 to 22 are structural views of a seventh embodiment of the present invention, wherein Fig. 20 is a cross-sectional view of Fig. 19, and Fig. 21 to Fig. 22 are schematic views of the second piston rod 1B, which are shown, and the sixth The embodiment is different. In the embodiment, a retaining ring 8 is further disposed between the piston 2 and the second piston rod 1B. The retaining ring 8 restricts the second piston rod 1B from moving along the axis, and the piston 2 is provided with a pin. The groove 2D is provided with a pin 7B on the second piston rod 1B, and the pin 7B is disposed in the pin groove 2D, and the cooperation of the pin 7B and the pin groove 2D enables the second piston rod 1B to rotate along the axis, When the second piston rod 1B rotates, the pin shaft 7B follows the rotation. As shown in Figs. 20 to 22, the rotation range of the pin shaft 7B is restricted by the pin shaft groove 2D.

Figure 23 is a schematic view showing the structure of the eighth embodiment of the present invention. It is shown that, unlike the sixth embodiment, in the present embodiment, a one-way 闽 2F is further provided, when the piston moves in one direction, The check valve 2F is closed, and the flowing medium 4 can only be driven from the piston through hole 2A, the first piston rod through hole 1A1, the in-rod through hole 1A11, the in-rod through hole 1B11, and the second piston rod through hole 1B1. And the passage of the piston through-flow hole 2B in the medium circulation throttle pipe, wherein the movement speed of the piston can be adjusted; and when the piston 2 moves in the opposite direction, the check valve 2F opens to form another medium circulation pipe, and flows. The medium 4 can be sequentially not only from the piston through hole 2A, the first piston rod through hole 1A1, the in-rod through hole 1A11, the in-rod through hole 1B11, the second piston rod through hole 1B1, and the piston through hole 2B. The passage through the medium circulation conduit can also pass through the open unidirectional wide 2F, so that the piston can move quickly; in the present embodiment, the check valve 2F is disposed on the piston 2, the present invention prompts to The 闽 2F may also be disposed on the first piston rod 1A or the second piston rod 1B; the present invention suggests that the feature of adding the one-way valve in the eighth embodiment can also be applied to other embodiments proposed by the present invention.

Figure 24 is a schematic view showing the structure of a ninth embodiment of the present invention. In the present embodiment, in the present embodiment, the end of the first piston rod 1A is provided with an anti-collision head 11, and in addition, in the piston cylinder 3 is further provided with a return elastic member 10 on one side of the second piston rod 1B; FIG. 25 is a schematic structural view of a tenth embodiment of the present invention, and the sixth embodiment is different, in this embodiment, the first The end of the piston rod 1A is provided with an anti-collision head 11, and a return elastic member 10 is further provided on the side of the first piston rod 1A outside the piston cylinder 3.

The present invention suggests that the addition of the features of the return spring in the ninth and tenth embodiments can also be applied to other embodiments of the present invention.

Claims

Claim

1. A piston type speed controller, the piston type speed controller proposed by the invention mainly comprises a flowing medium (4), a piston (2), a first piston rod (1A) and a second piston rod (IB), a piston Cylinder (3), first piston cylinder end (3A1) and second piston cylinder end (3A2), fixing seat (5), rod end connecting member (6) and first piston cylinder end seal (3A11) a second piston cylinder end seal (3A21) and a piston seal (2E), a piston seal (2E) is disposed on the piston (2) at the first piston cylinder end (3A1) and the second piston cylinder end a first piston-cylinder end seal (3A11) and a second piston-cylinder end seal (3A21) are respectively disposed in the head (3A2), and the piston (2) is respectively coupled to the first piston rod (1A) and the second piston The rod (IB) is fixedly connected, and the piston cylinder (3) seals the flowing medium (4) inside the cylinder (3) through the first piston cylinder end (3A1) and the second piston cylinder end (3A2) disposed at both ends The piston (2) is disposed inside the piston cylinder (3) and the first piston rod (1A) and the second piston rod (1B) are respectively from the first piston cylinder end (3A1) and the second piston cylinder end 3A2) is inserted out, a fixing seat (5) is arranged outside the cylinder (3), and a rod end connecting member (6) is installed at the end of the first piston rod (1A), characterized in that the piston (2) has the a piston rod (1A) and a second piston rod (IB), the first piston rod through hole (1A1) or the first piston rod through flow gap (1A2) is disposed on the first piston rod (1A), in the second The piston rod (1B) is provided with a second piston rod through hole (1B1) or a second piston rod through flow gap (1B2), the first piston rod through hole (1A1) or the first piston rod through flow gap ( 1A2) and the second piston rod through hole (1B1) or the second piston rod through flow gap (1B2) communicate with each other to form a medium circulation throttle pipe, when the piston (2) moves, the flow medium (4) sequentially from one The through hole or through gap of the piston rod flows in, and then flows out from the through hole or through gap of the other piston rod into the piston

2. The piston type speed controller according to claim 1, wherein: the first piston rod (1A) and the second piston rod (1B) are respectively provided with an in-rod through hole (1A11), ( 1B11), piston through holes (2A), (2B), piston through holes (2A), first piston rod through holes (1A1), and through-rod flow are respectively disposed on the piston (2) The hole (1A11), the in-rod through hole (1B11), the second piston rod through hole (1B1), and the piston through hole (2B) are sequentially connected to each other to constitute a medium flow restricting pipe.

3. The piston type speed controller according to claim 1, wherein: the first piston rod (1A) and the second piston rod (1B) are respectively provided with an in-rod through hole (1A11), ( 1B11), a piston through hole (2B) is further disposed on the piston (2), the first piston rod through hole (1A1), the rod through hole (1A11), and the rod through hole (1B11) The second piston rod through hole (1B1) and the piston through hole (2B) are sequentially connected to form a medium circulation throttle pipe.

4. The piston type speed controller according to claim 1, wherein: the piston (2) is further provided with a piston through hole (2A), (2B), the piston through hole (2A), The first piston rod through-flow gap (1A2), the second piston rod through-flow gap (1B2), and the piston through-flow hole (2B) are sequentially connected to form a medium flow restricting conduit.

5. The piston type speed controller according to claim 1, wherein: the first piston rod through-flow gap (1A2) and the second piston rod through-flow gap (1B2) communicate to form a medium flow restricting conduit.

6. The piston type speed controller according to claim 1, wherein: the piston (2) is further provided with a piston through hole (2C), the first piston rod throughflow gap (1A2), the piston The through hole (2C) and the second piston rod through-flow gap (1B2) are sequentially connected to each other to constitute a medium circulation throttle pipe.

7. The piston type speed controller according to any one of claims 2, 3, 4 or 6, wherein: a pin is disposed on each of the first piston rod (1A) and the second piston rod (IB) Shafts (7A) and (7B), piston (2) through the pin (7A) and (7B) respectively with the first piston rod (1A) is fixedly connected to the second piston rod (IB). The piston (2) is also provided with a pin groove (2D). The pin (7B) is located in the pin groove (2D), and the pin (7B) ) and the pin groove (2D) cooperate with each other. When the second piston rod (1B) rotates, the pin (7B) follows the rotation but its rotation is restricted within the pin groove (2D), and the second piston rod (IB) The other end is also provided with a rotating member (9).

8. The piston type speed controller according to any one of claims 2, 3, 4 or 6, wherein: a retaining ring is further disposed between the piston (2) and the second piston rod (IB) ( 8), the retaining ring (8) limits the movement of the second piston rod (IB) along the axis, the pin (2) is provided with a pin groove (2D), and the second piston rod (IB) is provided with a pin (7B) ), the pin (7B) is located in the pin groove (2D), the pin (7B) and the pin groove (2D) cooperate with each other, and the pin (7B) follows the rotation when the second piston rod (IB) rotates. However, its rotation is limited to the range of the pin groove (2D), and the other end of the second piston rod (1B) is also provided with a rotating member (9).

9. The piston type speed controller according to claim 1, wherein: a check valve (2F) is further disposed on the piston (2), and the check valve (2F) is closed when the piston moves in one direction. , the flowing medium (4) can only pass through the medium circulation throttling pipe, and when the piston

(2) When moving in the opposite direction, the one-way wide (2F) opens to form another medium circulation pipe.

10. The piston type speed controller according to claim 1, further comprising: a return elastic member (10) and an anti-collision head (11) disposed at an end of the first piston rod (1A), The return elastic member (10) may be installed inside the piston cylinder (3) on one side of the piston rod second piston rod (IB), or may be installed outside the piston cylinder (3) on the first piston rod (1A). One side.