阅读说明：本技术 一种具有双活塞的振动器 (Vibrator with double pistons ) 是由 张永长 刘斐斐 于 2020-05-07 设计创作，主要内容包括：本发明公开了一种具有双活塞的振动器,包括缸体,并在缸体的内部设有两个不相通的行程腔和两个不相通的常压腔；行程腔与常压腔之间连接连通；行程腔与常压腔之间还设有高压腔,高压腔与设置在缸体内部的气源通道连接连通；行程腔内还设有活塞,活塞上设有用于行程腔与常压腔连通或行程腔与高压腔连通的气道；行程腔通过气道与高压腔、常压腔来回连通转换实现行程腔内压强变化,使行程腔活塞面与高压腔活塞环面形成压力差值变化,实现活塞在缸体内来回运动；通过不同的气源通道将气源引入到不同的高压腔内,使得对应腔体内部的活塞同时运动,提高该装置的振动强度；通过启闭不同的气源通道又可以实现缸体最大振动力方向的变化。(The invention discloses a vibrator with double pistons, which comprises a cylinder body, wherein two non-communicated stroke cavities and two non-communicated normal pressure cavities are arranged in the cylinder body; the stroke cavity is communicated with the normal pressure cavity; a high-pressure cavity is also arranged between the stroke cavity and the normal-pressure cavity and is communicated with an air source channel arranged in the cylinder body; a piston is also arranged in the stroke cavity, and an air passage used for communicating the stroke cavity with the normal pressure cavity or communicating the stroke cavity with the high pressure cavity is arranged on the piston; the stroke cavity is communicated with the high-pressure cavity and the normal-pressure cavity back and forth through the air passage to realize pressure intensity change in the stroke cavity, so that a pressure difference value change is formed between the piston surface of the stroke cavity and the piston ring surface of the high-pressure cavity, and the piston moves back and forth in the cylinder body; air sources are introduced into different high-pressure cavities through different air source channels, so that pistons in corresponding cavities move simultaneously, and the vibration intensity of the device is improved; the change of the maximum vibration force direction of the cylinder body can be realized by opening and closing different air source channels.)

1. A vibrator having a dual piston, comprising: the cylinder comprises a cylinder body (2), and a first component (3) and a second component (4) which are used for sealing the cylinder body (2) are arranged at two ends of the cylinder body (2);

the interior of the cylinder body (2) is provided with two stroke cavities (22) which are not communicated with each other and two normal pressure cavities (24) which are not communicated with each other,

the normal pressure cavity (24) is communicated with the stroke cavity (22), a high pressure cavity (26) is further arranged between the normal pressure cavity (24) and the stroke cavity (22), and the high pressure cavity (26) is communicated with an air source channel (20) arranged in the cylinder body (2);

a piston (1) is arranged in the stroke cavity (22), and an air passage (11) for communicating the stroke cavity (22) with the normal pressure cavity (24) or communicating the stroke cavity (22) with the high pressure cavity (26) is arranged on the piston (1);

the stroke cavity (22) is communicated and converted with the high-pressure cavity (26) and the normal-pressure cavity (24) back and forth through the air passage (11), so that the pressure change in the stroke cavity (22) is realized, the pressure difference change is formed between the ring surface of the piston in the stroke cavity (22) and the ring surface of the piston in the high-pressure cavity (26), and the piston (1) is driven to perform piston motion in the cylinder body (2).

2. A vibrator having a dual piston as claimed in claim 1, wherein: the piston (1) comprises a first cylindrical end (10) and a second cylindrical end (14) which are integrally manufactured, and a concave annular groove (15) is formed in the joint of the first cylindrical end (10) and the second cylindrical end (14).

3. A vibrator having a dual piston as claimed in claim 2, wherein: the air passage (11) penetrates through the first cylindrical end (10) and extends towards the inside of the second cylindrical end (14), and is connected and communicated with a first air hole (12) and a second air hole (13) which are formed in the second cylindrical end (14), wherein the cross sections of the first air hole (12) and the second air hole (13) are in a cross shape and are respectively perpendicular to the air passage (11).

4. A vibrator having a dual piston as claimed in claim 3, wherein: the central axis of the air passage (11) is perpendicular to the central axes of the first air hole (12) and the second air hole (13), wherein the ratio of the distance between the first air hole (12) and the second air hole (13) to the sum of the distances between the high-pressure cavity (26) and the normal-pressure cavity (24) is D/(D + R)₁+R₂) Wherein D is the distance between the central axes of the first air hole (12) and the second air hole (13), and R is₁Refers to the radius, R, of the first air hole (12)₂Refers to the radius of the second air hole (13).

5. A vibrator having a double piston according to any of claims 2-4, characterized in that: the length of the second cylindrical end (14) is greater than the sum of the lengths of the high-pressure cavity (26) and the normal-pressure cavity (24); the atmospheric pressure cavity (24) is also provided with a vent hole (25) for exhausting gas.

6. A vibrator having a dual piston as claimed in claim 1, wherein: the first component (3) is provided with an internal thread hole (31) which is in threaded connection with an external air source, and the air source is guided into the air source channel (20) through the internal thread hole (31).

7. A vibrator having a dual piston as claimed in claim 2, wherein: the circumferential surfaces of the first cylindrical end (10) and the second cylindrical end (14) are provided with ring grooves (16) for retaining dirt, and the circumferential surface of the first cylindrical end (10) facing the second cylindrical end (14) is also provided with a chamfer (17), wherein the size of the chamfer (17) is 1mm 45 degrees.

8. A vibrator having a double piston according to claim 1, 6 or 7, wherein: the first component (3) and the second component (4) are provided with counter bores (32) for fixing the first component and the second component on the cylinder body (2).

Technical Field

The invention relates to the technical field of vibrators, in particular to a vibrator with double pistons.

Background

The pneumatic vibrator is a common vibrator, high-pressure gas discharged by an air compressor is mainly used for being connected to a product gas inlet through a gas pipe, when the gas pushes a piston to move upwards, the gas in a gas chamber on the piston is extruded, and the extruded gas is discharged through an exhaust hole; when the piston moves upwards to the end point, the air automatically switches the ventilation direction through the groove and the air passage, so that the air enters an air chamber on the piston; the high-pressure gas pushes the piston to move downwards to the end point, the first circulation is finished, the second circulation is started, and the vibrator is enabled to generate translation and shaking through continuous reciprocating circulation, so that the vibration force is generated. The pneumatic vibrator commonly available in the market at present generally comprises a shell and a single piston arranged in the shell, wherein the single piston slides up and down in the shell under the action of high-pressure pneumatics, so that the vibrator generates a vibrating force, but the maximum vibrating force direction of the single piston is single.

Disclosure of Invention

The present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a vibrator having a double piston.

In order to achieve the purpose, the invention provides the following technical scheme: a vibrator with a double piston comprises a cylinder body, and a first component and a second component which are used for sealing the cylinder body are arranged at two ends of the cylinder body; two stroke cavities which are not communicated with each other and two normal pressure cavities which are not communicated with each other are arranged in the cylinder body; the normal pressure cavity is communicated with the stroke cavity, a high pressure cavity is also arranged between the normal pressure cavity and the stroke cavity, and the high pressure cavity is communicated with an air source channel arranged in the cylinder body; a piston is arranged in the stroke cavity, and an air passage used for communicating the stroke cavity with the normal pressure cavity or communicating the stroke cavity with the high pressure cavity is arranged on the piston; the stroke cavity is communicated and converted with the high-pressure cavity and the normal-pressure cavity back and forth through the air passage, so that pressure intensity change in the stroke cavity is realized, pressure difference value change is formed between the ring surface of the piston in the stroke cavity and the ring surface of the piston in the high-pressure cavity, and the piston is driven to do piston motion in the cylinder body.

As a preferred technical scheme of the invention: the piston comprises a first cylindrical end and a second cylindrical end which are integrally manufactured, and a concave annular groove is formed in the joint of the first cylindrical end and the second cylindrical end.

As a preferred technical scheme of the invention: the air passage penetrates through the first cylindrical end and extends towards the inside of the second cylindrical end, and is communicated with a first air hole and a second air hole which are arranged on the second cylindrical end, wherein the cross sections of the first air hole and the second air hole are in a cross shape and are respectively vertical to the air passage.

As a preferred technical scheme of the invention: the central axis of the air passage is perpendicular to the central axes of the first air hole and the second air hole, wherein the ratio of the distance between the first air hole and the second air hole to the sum of the distances between the high-pressure cavity and the normal-pressure cavity is D/(D + R1+ R2), wherein D refers to the distance between the central axes of the first air hole and the second air hole, R1 refers to the radius of the first air hole, and R2 refers to the radius of the first air hole.

As a preferred technical scheme of the invention: the length of the second cylindrical end is greater than the sum of the lengths of the high-pressure cavity and the normal-pressure cavity; and the atmospheric pressure cavity is also provided with a vent hole for exhausting gas.

As a preferred technical scheme of the invention: the first component is provided with an internal thread hole which is in threaded connection with an external air source, and the air source is guided into the air source channel through the internal thread hole.

As a preferred technical scheme of the invention: the circumferential surfaces of the first cylindrical end and the second cylindrical end are both provided with ring grooves used for retaining dirt, and the circumferential surface of the first cylindrical end facing the second cylindrical end is also provided with a chamfer, wherein the size of the chamfer is 1mm × 45 °.

As a preferred technical scheme of the invention: the first part and the second part are provided with counter bores for fixing the first part and the second part on the cylinder body.

By adopting the technical scheme, the invention has the beneficial effects that: because the air sources are introduced into different high-pressure cavities through different air source channels, the pistons corresponding to the interiors of the cavities move simultaneously, and the vibration intensity of the device is further improved.

Drawings

FIG. 1 is an exploded view of the main structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the cylinder body of the present invention;

FIG. 3 is a schematic cross-sectional view of a piston according to the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a schematic top view of a first component of the present invention;

FIG. 6 is a schematic cross-sectional view of a first component of the present invention;

fig. 7 is a top view of a second component of the present invention.

In the figure: 1. a piston; 10. a first cylindrical end; 11. an airway; 12. a first air hole; 13. a second air hole; 14. a second cylindrical end; 15. an annular groove; 16. a ring groove; 17. chamfering; 2. a cylinder body; 20. an air source channel; 22. a stroke chamber; 24. a constant pressure chamber; 25. a vent hole; 26. a high pressure chamber; 3. a first member; 31. an internally threaded bore; 32. a countersunk hole; 4. a second component.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "upper surface", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-7, an embodiment of the present invention is shown: a vibrator having a dual piston, comprising: the cylinder body 2 is included, and a first part 3 and a second part 4 for sealing the cylinder body 2 are arranged at two ends of the cylinder body 2; two stroke cavities 22 which are not communicated with each other and two normal pressure cavities 24 which are not communicated with each other are arranged in the cylinder body 2; the atmospheric pressure cavity 24 is communicated with the stroke cavity 22, a high pressure cavity 26 is further arranged between the atmospheric pressure cavity 24 and the stroke cavity 22, and the high pressure cavity 26 is communicated with the air source channel 20 arranged in the cylinder body 2; a piston 1 is arranged in the stroke cavity 22, and an air passage 11 for communicating the stroke cavity 22 with the normal pressure cavity 24 or communicating the stroke cavity 22 with the high pressure cavity 26 is arranged on the piston 1; the stroke cavity 22 is communicated with the high pressure cavity 26 and the normal pressure cavity 24 back and forth through the air passage 11 for conversion, so that pressure change in the stroke cavity 22 is realized, pressure difference change is formed between the annular surface of the piston 1 in the stroke cavity 22 and the annular surface of the piston 1 in the high pressure cavity 26, and the piston 1 is driven to perform piston motion in the cylinder body 2.

Through the technical scheme, the working principle of the invention is as follows: opening the gas source switch, when the compressed gas enters the high-pressure cavity 26 through one of the gas source channels 20, the other gas source channel 20 is closed; the piston 1 is pushed to do accelerated motion towards the direction of the stroke cavity 22, when the first air hole 12 on the piston 1 is connected and communicated with the high-pressure cavity 26, the second air hole 13 is blocked by the inner surface of the cylinder body 2, compressed air in the high-pressure cavity 26 enters the stroke cavity 22 through the air passage 11 and the first air hole 12, and the piston 1 does decelerated motion towards the direction of the stroke cavity 22 until the speed of the piston 1 is reduced to zero; the piston 1 does accelerated motion towards the direction of the normal pressure cavity 24 again, when the piston 1 moves towards the direction of the normal pressure cavity 24 until the first air hole 12 is disconnected with the high pressure cavity 26, at the moment, the second air hole 13 is connected and communicated with the normal pressure cavity 24, the stroke cavity 22 is decompressed through the air passage 11, the second air hole 13, the normal pressure cavity 24 and the air hole 25, the piston 1 hits the cylinder body 2 under the inertia effect, and the vibrator completes a vibration impact process.

If the other piston 1 needs to vibrate, the compressed gas enters the other gas source channel 20 through the switching of the gas circuit on the first component 3, and the other gas source channel 20 corresponding to the compressed gas is closed, so that the working principle is consistent with the above; the vibrator completes one reverse vibration impact process.

The piston 1 comprises a first cylindrical end 10 and a second cylindrical end 14 which are integrally manufactured, an inwards concave annular groove 15 is formed in the joint of the first cylindrical end 10 and the second cylindrical end 14, and due to the arrangement of the annular groove 15, the piston 1 can quickly turn, namely, the contact area between the annular surface of the piston 1 and an air source in the high-pressure cavity 26 is increased, the reversing stroke time of the piston 1 is shortened, and the vibration frequency of the piston 1 is improved.

In order to further increase the vibration frequency of the piston 1, the air passage 11 penetrates through the first cylindrical end 10 and extends towards the inside of the second cylindrical end 14, and is connected and communicated with a first air hole 12 and a second air hole 13 which are arranged on the second cylindrical end 14, wherein the cross sections of the first air hole 12 and the second air hole 13 are both in a cross shape and are perpendicular to the air passage 11, an air source is introduced into the stroke cavity 22 through the two air holes to drive the piston 1 to move towards the stroke cavity 22 in a decelerating manner, when the speed of the piston 1 is zero, the piston 1 moves towards the normal pressure cavity 24 in an accelerating manner, the gas is rapidly injected into the stroke cavity 22 through the first air hole 12, the gas in the stroke cavity 22 is rapidly released through the second air hole 13, the frequency that the piston 1 impacts the cylinder body 2 is increased, and the cylinder body 2 is driven to vibrate.

The central axis of the air passage 11 is perpendicular to the central axes of the first air hole 12 and the second air hole 13, wherein the ratio of the distance between the first air hole 12 and the second air hole 13 to the sum of the distances between the high-pressure cavity 26 and the normal-pressure cavity 24 is D/D + R1+ R2, wherein D denotes the distance between the central axes of the first air hole 12 and the second air hole 13, R1 denotes the radius of the first air hole 12, and R2 denotes the radius of the second air hole 13, so that the piston 1 can impact the cylinder 2 at the maximum speed through the ratio, and the vibration intensity of the device is improved.

Further, the length of the second cylindrical end 14 is greater than the sum of the lengths of the high-pressure cavity 26 and the normal-pressure cavity 24, so that the piston ring surface of the piston 1 located in the high-pressure cavity 26 is prevented from being attached to the cavity surface of the high-pressure cavity 26, and the vibration frequency of the piston 1 is prevented from being reduced; the atmospheric cavity 24 is also provided with a vent 25 for exhausting an air source, so that the atmospheric cavity 24 is communicated with the atmosphere.

In order to facilitate the access of an external air path, the first component 3 is provided with an internal threaded hole 31 for being in threaded connection with an external air source, and the air source is guided into the air source channel 20 through the internal threaded hole 31.

The circumferential surfaces of the first cylindrical end 10 and the second cylindrical end 14 are both provided with a ring groove 16 for retaining dirt, and the circumferential surface of the first cylindrical end 10 facing the second cylindrical end 14 is also provided with a chamfer 17, wherein the chamfer 17 is 1mm by 45 degrees in size, so that stress concentration can be reduced, and the strength of the piston 1 can be enhanced; it can also play a guiding role during assembly, and damage the inner wall of the cylinder body 2 when the piston 1 moves.

In order to facilitate the installation of the two components, the first component 3 and the second component 4 are provided with counter bores 32 for fixing the two components to the cylinder body 2.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.