CN214578521U - Hydraulic structure for opening and closing drag reduction plate - Google Patents
Hydraulic structure for opening and closing drag reduction plate Download PDFInfo
- Publication number
- CN214578521U CN214578521U CN202023159777.2U CN202023159777U CN214578521U CN 214578521 U CN214578521 U CN 214578521U CN 202023159777 U CN202023159777 U CN 202023159777U CN 214578521 U CN214578521 U CN 214578521U
- Authority
- CN
- China
- Prior art keywords
- drag reduction
- piston
- buffer
- reduction plate
- buffer sleeve
- 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
Images
Landscapes
- Actuator (AREA)
Abstract
The utility model relates to a hydraulic structure is opened and close to drag reduction plate, including the hydraulic press, drag reduction plate, be connected with transmission module between hydraulic press and the drag reduction plate, transmission module includes the piston rod, the inside of hydraulic press is provided with back oil chamber, the cushion chamber, the inside embedding in back oil chamber has the piston, piston rod and piston fixed connection, one side of piston near the cushion chamber is fixed with the cushion collar, the piston rod embedding is in the inside of cushion collar, the cross section in back oil chamber is greater than the cross section of cushion chamber, the cushion collar is suitable for the inside of embedding cushion chamber, the inner wall contactless each other of cushion collar and cushion chamber, be connected with the fluid-discharge tube on the cushion chamber. The buffer sleeve is arranged in the oil return cavity, so that the buffer sleeve and the buffer cavity form a throttling hole, the movement speed of the piston is reduced, the movement speed of the resistance reducing plate is controlled, and finally the mechanical impact noise between the resistance reducing plate and the stop plate is reduced. The hydraulic structure for opening and closing the drag reduction plate is simple in structure, does not need to change the original pipeline arrangement, and is good in buffering effect.
Description
Technical Field
The utility model belongs to the technical field of the hydraulic control technique and specifically relates to a hydraulic structure is opened and close to drag reduction plate is related to.
Background
According to the actual condition of the investigation of the submarine, the drag reduction plate can be mechanically collided with the stop plate in the opening process, so that larger noise is generated, the concealment of the submarine is seriously influenced, and the opening noise of the drag reduction plate is urgently required to be reduced. The cabin penetrating rod is connected with a hydraulic machine piston rod of the drag reduction plate opening and closing device through a flange. A piston rod of the hydraulic machine of the drag reduction plate opening and closing device drives the drag reduction plate to act through a cabin penetrating rod, a rotating arm, a connecting rod and the like. When the piston rod moves in the hydraulic press, the mechanical part drives the front cover of the launching tube and the resistance reducing plate to open and close. Therefore, the movement speed of the piston rod of the hydraulic machine reaching the stroke end can be controlled, so that the movement speed of the resistance reducing plate can be controlled, and the mechanical impact noise between the resistance reducing plate and the stop plate is finally reduced.
When the hydraulic machine piston rod moves to the end of the stroke, the speed of movement of the piston rod is generally reduced in two ways: one is an external buffer device, and the other is an internal buffer device. The external buffer device is characterized in that a corresponding flow control element is added in a loop of the hydraulic machine to control the movement speed of a piston, namely a throttle valve is added in the loop to control the movement speed of the hydraulic machine, and the buffer mode has a complex structure and needs to change the original pipeline arrangement; built-in buffer is exactly the internal design buffer at the hydraulic press controls piston speed, the utility model discloses a built-in buffer structure, this kind of control method's simple structure, need not change original pipeline arrangement and buffering effect are better.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the technical problem who exists among the prior art, provide a hydraulic structure is opened and close to drag reduction plate.
The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a hydraulic structure is opened and close to drag reduction plate, includes the hydraulic press, drag reduction plate, the hydraulic press with be connected with transmission module between the drag reduction plate, transmission module includes the piston rod, the inside of hydraulic press is provided with back oil chamber, cushion chamber, the inside embedding in back oil chamber has the piston, the piston rod with piston fixed connection, being close to of piston one side of cushion chamber is fixed with the cushion collar, the piston rod embedding is in the inside of cushion collar, the cross section in back oil chamber is greater than the cross section of cushion chamber, the cushion collar is suitable for the embedding the inside of cushion chamber, the cushion collar with the inner wall of cushion chamber does not contact with each other, be connected with the fluid-discharge tube on the cushion chamber.
Preferably, in the hydraulic structure for opening and closing the resistance reducing plate, one side of the buffer sleeve, which is close to the piston, is cylindrical, and one side of the buffer sleeve, which is far away from the piston, is in a shape of a truncated cone with a gradually decreasing cross section.
Preferably, the hydraulic structure for opening and closing the drag reduction plate is provided with a cylindrical buffer sleeve.
Preferably, in the hydraulic structure for opening and closing the drag reduction plate, the buffer sleeve is in a circular truncated cone shape, and the area of the right end surface of the buffer sleeve is smaller than that of the left end surface.
Preferably, the hydraulic structure for opening and closing the drag reduction plate is characterized in that the side edge of the axial section of the buffer sleeve is parabolic.
Preferably, the above-mentioned drag reduction plate opens and closes the hydraulic structure, wherein the side of the cushion collar is provided with at least one row of damping holes along the axial direction.
Preferably, in the hydraulic structure for opening and closing the drag reduction plate, the transmission module further includes a rotating arm, a cabin penetrating rod, and a plurality of connecting rods, the piston rod is fixedly connected to the cabin penetrating rod, the cabin penetrating rod is connected to the connecting rod at the left end, the rotating arm is connected between the connecting rods, and the connecting rod at the right end is hinged to the drag reduction plate.
The utility model has the advantages that: this hydraulic structure is opened and close to drag reduction plate sets up the cushion collar through the inside at the hydraulic press, at the in-process that the piston moved to the right, after the cushion collar entered the cushion chamber, the fluid of oil return intracavity was "crowded" to the cushion chamber in, the fluid of oil return intracavity passes through the flow area reduction of cushion chamber, the cushion collar has formed a orifice with the cushion chamber to reduce the velocity of motion of piston, controlled the velocity of motion of drag reduction plate, finally reduce the mechanical impact noise between drag reduction plate and the backstop board. The hydraulic structure for opening and closing the drag reduction plate is simple in structure, does not need to change the original pipeline arrangement, and is good in buffering effect.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a buffer sleeve in a combination of a cylinder and a circular truncated cone;
FIG. 3 is a schematic view of a structure of a cylindrical buffer sleeve;
FIG. 4 is a schematic view of a usage structure of a truncated cone-shaped cushion collar;
FIG. 5 is a schematic view of the structure of the parabolic cushion cover;
FIG. 6 is a schematic view of the structure of the cylindrical cushion collar with damping holes.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the hydraulic control device comprises a drag reduction plate, 2, a piston rod, 3, a hydraulic machine, 4, a cabin penetrating rod, 5, a connecting rod, 6, a rotating arm, 7, a buffer cavity, 8, a stop plate, 9, a piston, 10, a buffer sleeve, 11, a damping hole, 12 and an oil return cavity.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1, a hydraulic structure for opening and closing a drag reduction plate comprises a hydraulic machine 3 and the drag reduction plate 1, wherein a transmission module is connected between the hydraulic machine 3 and the drag reduction plate 1 and comprises a piston rod 2, the transmission module further comprises a rotating arm 6, a cabin penetrating rod 4 and a plurality of connecting rods 5, the piston rod 2 is fixedly connected with the cabin penetrating rod 4, the cabin penetrating rod 4 is connected with the connecting rod 5 at the left end, the rotating arm 6 is connected between the connecting rods 5, and the connecting rod 5 at the right end is hinged to the drag reduction plate 1. Fig. 1 is a schematic diagram of a transmission mechanism of a drag reduction plate 1, a cabin penetrating rod 4 is connected with a piston rod 2 through a flange, and the piston rod 2 drives the drag reduction plate 1 to move through the cabin penetrating rod 4, a rotating arm 6, a connecting rod 5 and the like. When the piston rod 2 moves in the hydraulic machine 3, the mechanical parts drive the front cover of the launching tube and the resistance reducing plate 1 to open and close. Therefore, by controlling the movement speed of the piston rod 2 of the hydraulic machine 3 to the stroke end, the movement speed of the resistance reducing plate 1 can be controlled, and the mechanical impact noise between the resistance reducing plate 1 and the stopper plate 8 is finally reduced.
An oil return cavity 12 and a buffer cavity 7 are arranged inside the hydraulic machine 3, and a piston 9 is embedded inside the oil return cavity 12. The piston rod 2 is fixedly connected with the piston 9, a buffer sleeve 10 is fixed on one side of the piston 9 close to the buffer cavity 7, and the piston rod 2 is embedded in the buffer sleeve 10. The cross section of the oil return cavity 12 is larger than that of the buffer cavity 7, the buffer sleeve 10 can be embedded into the buffer cavity 7 in the operation process, and the buffer sleeve 10 is not in contact with the inner wall of the buffer cavity 7. The buffer cavity 7 is connected with a liquid discharge pipe, and the liquid discharge pipe is used for discharging the hydraulic oil in the buffer cavity 7. In the process that the piston 9 moves rightwards, after the buffer sleeve 10 enters the buffer cavity 7, oil in the oil return cavity 12 is squeezed into the buffer cavity 7, the flow area of the oil in the oil return cavity 12 passing through the buffer cavity 7 is reduced, and the buffer sleeve 10 and the buffer cavity 7 form a throttling hole, so that the movement speed of the piston 9 is reduced.
As shown in fig. 3, 4, 5, and 6, there are five different buffer device configurations. In fig. 3, the cushion cover 10 is cylindrical, and the cylindrical cushion device is equivalent to a fixed "orifice". The other four structural forms are variable throttling buffer forms. After the cylindrical buffer sleeve enters the buffer cavity, the change of the flow area is large, and the hydraulic pressure of the oil return cavity can generate a large pressure to generate impact. As shown in fig. 4, the cushion collar 10 is in the shape of a circular truncated cone, and the area of the right end surface of the cushion collar 10 is smaller than that of the left end surface. In fig. 5, the axial cross-sectional side of the cushion cover 10 is parabolic. The flow area of the circular truncated cone-shaped and parabolic buffer structures changes along with the change of the length of the buffer sleeve entering the buffer cavity, and the closer the piston is to the tail end of the buffer cavity, the lower the speed is. The processing difficulty of the parabolic buffer device is higher, the structure of the truncated cone-shaped buffer device is simple to process, and the application is wider. The 'flute' shaped buffer structure in fig. 6 has a row of damping holes 11, and as the buffer stroke increases, the overflowing holes of the damping holes are continuously reduced, and the overflowing area is reduced, so that the piston speed is reduced. The flow area in the form is changed in a step mode, the structure is complex, and the requirement on machining precision is high.
As shown in fig. 2, the cylindrical buffer sleeve structure has obvious deceleration effect, but generates certain impact; the circular truncated cone-shaped buffer sleeve structure can reduce impact and is low in processing difficulty. The structure of the buffer sleeve is as shown in fig. 2, one side of the buffer sleeve 10 close to the piston 9 is cylindrical, and one side of the buffer sleeve 10 far away from the piston 9 is in a truncated cone shape with a gradually decreasing cross section, so that the scheme is preferred. The hydraulic structure for opening and closing the drag reduction plate is simple in structure, does not need to change the original pipeline arrangement, and is good in buffering effect.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for convenience of description and simplification of description, but not for indicating or implying that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (7)
1. The utility model provides a hydraulic structure is opened and close to drag reduction plate which characterized in that: the hydraulic press comprises a hydraulic press (3) and a resistance reducing plate (1), wherein a transmission module is connected between the hydraulic press (3) and the resistance reducing plate (1), the transmission module comprises a piston rod (2), an oil return cavity (12) and a buffer cavity (7) are arranged in the hydraulic press (3), a piston (9) is embedded in the oil return cavity (12), the piston rod (2) is fixedly connected with the piston (9), a buffer sleeve (10) is fixed on one side, close to the buffer cavity (7), of the piston (9), the piston rod (2) is embedded in the buffer sleeve (10), the cross section of the oil return cavity (12) is larger than that of the buffer cavity (7), the buffer sleeve (10) is suitable for being embedded in the buffer cavity (7), and the buffer sleeve (10) is not in contact with the inner wall of the buffer cavity (7), and the buffer cavity (7) is connected with a liquid discharge pipe.
2. A drag reduction plate opening and closing hydraulic structure as claimed in claim 1, characterized in that: one side of the buffer sleeve (10) close to the piston (9) is cylindrical, and one side of the buffer sleeve (10) far away from the piston (9) is in a circular truncated cone shape with a gradually reduced cross section.
3. A drag reduction plate opening and closing hydraulic structure as claimed in claim 1, characterized in that: the buffer sleeve (10) is cylindrical.
4. A drag reduction plate opening and closing hydraulic structure as claimed in claim 1, characterized in that: the buffer sleeve (10) is in a round table shape, and the area of the right end face of the buffer sleeve (10) is smaller than that of the left end face.
5. A drag reduction plate opening and closing hydraulic structure as claimed in claim 1, characterized in that: the side edge of the axial section of the buffer sleeve (10) is parabolic.
6. A drag reduction plate opening and closing hydraulic structure as claimed in claim 3, characterized in that: the side surface of the buffer sleeve (10) is provided with at least one row of damping holes (11) along the axial direction.
7. A drag reduction plate opening and closing hydraulic structure as claimed in claim 1, characterized in that: the transmission module further comprises a rotating arm (6), a cabin penetrating rod (4) and a plurality of connecting rods (5), the piston rod (2) is fixedly connected with the cabin penetrating rod (4), the cabin penetrating rod (4) is connected with the connecting rod (5) at the left end, the rotating arm (6) is connected between the connecting rods (5), and the connecting rod (5) located at the right end is hinged to the drag reduction plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023159777.2U CN214578521U (en) | 2020-12-24 | 2020-12-24 | Hydraulic structure for opening and closing drag reduction plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023159777.2U CN214578521U (en) | 2020-12-24 | 2020-12-24 | Hydraulic structure for opening and closing drag reduction plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214578521U true CN214578521U (en) | 2021-11-02 |
Family
ID=78366581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023159777.2U Active CN214578521U (en) | 2020-12-24 | 2020-12-24 | Hydraulic structure for opening and closing drag reduction plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214578521U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087313A (en) * | 2021-11-17 | 2022-02-25 | 中国人民解放军海军工程大学 | Structure for reducing opening noise of drag reduction plate and use method thereof |
| CN116029050A (en) * | 2022-12-30 | 2023-04-28 | 中国人民解放军海军工程大学 | Optimization design method for opening and closing device of front cover of torpedo transmitting tube |
-
2020
- 2020-12-24 CN CN202023159777.2U patent/CN214578521U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087313A (en) * | 2021-11-17 | 2022-02-25 | 中国人民解放军海军工程大学 | Structure for reducing opening noise of drag reduction plate and use method thereof |
| CN116029050A (en) * | 2022-12-30 | 2023-04-28 | 中国人民解放军海军工程大学 | Optimization design method for opening and closing device of front cover of torpedo transmitting tube |
| CN116029050B (en) * | 2022-12-30 | 2023-11-14 | 中国人民解放军海军工程大学 | Optimization design method for opening and closing device of front cover of torpedo transmitting tube |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214578521U (en) | Hydraulic structure for opening and closing drag reduction plate | |
| WO2017097232A1 (en) | Two-stage electronic expansion valve | |
| KR101484794B1 (en) | Attenuator for damping pressure fluctuations in a hydraulic system | |
| CN103122880A (en) | Adjustable pilot reducing valve | |
| CN110486491B (en) | Surge-proof valve for pneumatic axial-flow compressor | |
| CN112431816B (en) | End buffer device for controlling movement speed of hydraulic actuating cylinder by oil damping | |
| JP6757472B2 (en) | Electronic expansion valve and freezing system equipped with it | |
| CN105020203A (en) | High-speed cylinder in which pneumatic buffering devices are arranged | |
| CN111911479A (en) | Buffering hydraulic cylinder | |
| CN201489118U (en) | Cylinder type vibroseis vibrator | |
| CN208203698U (en) | A kind of highly reliable cushion cylinder | |
| SE0950814A1 (en) | Arrangement and procedure for damping a piston movement | |
| CN109372607A (en) | Multistage draining exhaust valve and its working method | |
| CN208686702U (en) | A kind of cushion cylinder and its damper piston assembly | |
| CN209781273U (en) | Anti-surge valve | |
| CN110566713B (en) | Exhaust valve driving mechanism and exhaust valve | |
| CN108223472A (en) | A kind of rotary buffering valve | |
| CN202228468U (en) | Piston cylinder | |
| CN213899471U (en) | Built-in hydraulic buffer device | |
| CN208764036U (en) | A kind of adjustable single-acting cylinder of buffering | |
| CN217233985U (en) | Hydraulic cylinder buffer structure and hydraulic cylinder | |
| CN108799252B (en) | Hydraulic cylinder with adjustable bidirectional buffering speed | |
| CN103629188B (en) | Buffer device for actuator drum | |
| CN214578023U (en) | Adjustable buffer oil cylinder | |
| CN114087313A (en) | Structure for reducing opening noise of drag reduction plate and use method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |