CN219888388U - Structure for eliminating influence of liquid compression and liquid impulse on reciprocating motion of piston - Google Patents
Structure for eliminating influence of liquid compression and liquid impulse on reciprocating motion of piston Download PDFInfo
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- CN219888388U CN219888388U CN202320514087.9U CN202320514087U CN219888388U CN 219888388 U CN219888388 U CN 219888388U CN 202320514087 U CN202320514087 U CN 202320514087U CN 219888388 U CN219888388 U CN 219888388U
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- piston
- cylinder
- rod
- reciprocating motion
- liquid
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- 239000007788 liquid Substances 0.000 title claims abstract description 24
- 230000033001 locomotion Effects 0.000 title claims abstract description 24
- 230000006835 compression Effects 0.000 title claims abstract description 12
- 238000007906 compression Methods 0.000 title claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 7
- 230000006978 adaptation Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 239000010720 hydraulic oil Substances 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 18
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003405 preventing effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The utility model relates to the field of reciprocating motion devices, in particular to a structure for eliminating the influence of liquid compression and liquid impulse on reciprocating motion of a piston. The cylinder comprises a cylinder body, a cylinder head and a cylinder bottom, a piston rod is slidably mounted in the cylinder body, a bearing seat is arranged on one side, far away from the piston rod, of the cylinder bottom, the piston rod comprises a piston sleeve matched with the inner wall of the cylinder body, a movable rod extending out of the cylinder head is arranged on one side of the piston sleeve, a screw rod is rotatably mounted in the movable rod, one side of the screw rod extends out of the cylinder bottom and the bearing seat, and a screw rod nut matched with the screw rod is arranged in the piston sleeve. Compared with the prior art, the utility model has the beneficial effects that: the utility model discloses a cooperation of structures such as piston sleeve, lead screw, screw nut, bearing frame makes the piston rod in this structure at reciprocating motion's in-process, can neglect the compressibility of hydraulic oil self and the influence of micro fluctuation, reaches the accurate effect of stroke control.
Description
Technical Field
The utility model relates to the field of reciprocating motion devices, in particular to a structure for eliminating the influence of liquid compression and liquid impulse on reciprocating motion of a piston.
Background
Hydraulic is a transmission technology which is widely applied in industry, and is very popular in the field of linear motion due to the heavy load, smoothness, impact resistance, reliability and other performances. The cylinder is also called a hydraulic cylinder, the hydraulic cylinder is a driving piece taking hydraulic pressure as a power source, and a machine part which reciprocates in the cylinder body is a piston.
In the prior art, the piston is generally pushed by increasing the pressure by filling hydraulic oil into the cylinder body, and in the pushing process of the piston, when the piston is required to stop or turn to move under the condition that the output end of the oil cylinder is required to provide high-precision displacement, the high-pressure hydraulic oil inlet valve is closed or turns to the switching flow passage. Because the fluid has fluidity and fluctuation, under the condition that the limiting device does not limit the piston movement structure, the compressibility of the fluid and slight fluctuation impulse generated in the recovery process can cause the hydraulic oil in the cylinder body to have slight reciprocating fluctuation when acting on the piston, and the fluctuation can influence the stroke precision of the piston.
Disclosure of Invention
The present utility model provides a structure for eliminating the influence of liquid compression and liquid impulse on the reciprocating motion of a piston, so as to solve the problems set forth in the background art.
In order to solve the problems, the utility model adopts the following technical scheme: the structure for eliminating the influence of liquid compression and liquid impulse on the reciprocating motion of the piston comprises an oil cylinder, wherein the oil cylinder consists of a cylinder body, a cylinder head and a cylinder bottom, a piston rod is slidably mounted in the oil cylinder, one side, far away from the piston rod, of the cylinder bottom is provided with a bearing seat, the piston rod comprises a piston sleeve matched with the inner wall of the cylinder body, one side of the piston sleeve is provided with a movable rod extending out of the cylinder head, a screw rod is rotatably mounted in the movable rod, one side of the screw rod extends out of the cylinder bottom and the bearing seat, and a screw rod nut matched with the screw rod is arranged in the piston sleeve.
Compared with the prior art, the utility model has the beneficial effects that: the utility model discloses a cooperation of structures such as piston sleeve, lead screw, screw nut, bearing frame makes the piston rod in this structure at reciprocating motion's in-process, can neglect the compressibility of hydraulic oil self and the influence of micro fluctuation, reaches the accurate effect of stroke control.
As a further improvement of the present utility model, the technical problem to be solved is: the screw rod which needs to be connected with the bearing seat can rotate more flexibly.
In order to solve the technical problems, the utility model further adopts the following technical scheme: tapered roller bearings matched with the outer wall of the extending part of the screw rod are arranged in the bearing seat at intervals.
The beneficial effects of the improvement are as follows: through tapered roller bearing's setting, can rotate more nimble between messenger's device's bearing frame and the lead screw.
As a further improvement of the present utility model, the technical problem to be solved is: the sealing and oil leakage preventing effects are required between the screw rod and the cylinder bottom.
In order to solve the technical problems, the utility model further adopts the following technical scheme: and a sealing ring matched with the outer wall of the extending part of the screw rod is arranged in the cylinder bottom.
The beneficial effects of the improvement are as follows: through the setting of sealing washer, make have the sealed oil leak proof effect between this device's lead screw and the cylinder bottom.
As a further improvement of the present utility model, the technical problem to be solved is: the screw rod is required to be further convenient to position and install.
In order to solve the technical problems, the utility model further adopts the following technical scheme: and one side of the bearing seat is provided with a limit nut, and the limit nut is arranged on the outer wall of the part of the screw rod extending out of the bearing seat.
The beneficial effects of the improvement are as follows: through the setting of limit nut, make this device can further conveniently fix a position the installation lead screw on the bearing frame.
As a further improvement of the present utility model, the technical problem to be solved is: it is necessary to further facilitate control of the reciprocating motion of the piston rod within the cylinder.
In order to solve the technical problems, the utility model further adopts the following technical scheme: one side of the cylinder body, which is far away from the cylinder head, is provided with a control valve, and the control valve is communicated with the cylinder body through an oil pipe.
The beneficial effects of the improvement are as follows: through the arrangement of the control valve and the oil pipe, the device can further conveniently control the reciprocating motion of the piston rod in the oil cylinder.
Drawings
Fig. 1 is a schematic elevational cross-sectional view of the present utility model.
Fig. 2 is a schematic cross-sectional view of the cylinder of the present utility model.
The character labels in the figure are 1, a cylinder body; 2. a cylinder head; 3. a cylinder bottom; 4. a piston rod; 401. a piston sleeve; 402. a screw rod; 403. a screw nut; 404. a movable rod; 5. a bearing seat; 501. tapered roller bearings; 6. a control valve; 7. a limit nut; 8. and (5) an oil pipe.
Detailed Description
In order that those skilled in the art may better understand the technical solutions of the present utility model, the following detailed description of the present utility model with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present utility model.
Example 1:
as shown in fig. 1 and 2, the structure for eliminating the influence of liquid compression and liquid impulse on the reciprocating motion of a piston comprises an oil cylinder, wherein the oil cylinder consists of a cylinder body 1, a cylinder head 2 and a cylinder bottom 3, a piston rod 4 is slidably installed in the oil cylinder, a bearing seat 5 is arranged on one side, far away from the piston rod 4, of the cylinder bottom 3, the piston rod 4 comprises a piston sleeve 401 matched with the inner wall of the cylinder body 1, a movable rod 404 extending out of the cylinder head 2 is arranged on one side of the piston sleeve 401, a screw rod 402 is rotatably installed on one side of the movable rod 404, the cylinder bottom 3 and the bearing seat 5 extend out of one side of the screw rod 402, and a screw rod nut 403 matched with the screw rod 402 is arranged in the piston sleeve 401.
The specific working principle is as follows: when the structure operates in operation, hydraulic power is provided by the hydraulic pump to push the piston rod 4 in the oil cylinder to reciprocate; in this process, the movement of the piston sleeve 401 drives the movable rod 404 and the screw nut 403 to move together, and the movement of the screw nut 403 starts the screw 402 to rotate, so that when the thrust force applied to the piston sleeve 401 is stopped or reduced to stop moving due to the threaded connection between the screw 402 and the screw nut 403, the screw 402 also stops rotating, and slight fluctuation caused by the compressibility of hydraulic oil also counteracts due to the friction force of the threaded fit between the screw nut 403 and the screw 402, so that the final position of the piston rod 4 when stopped is not affected. In the above process, the piston sleeve 401 in the present structure can ignore the influence of compressibility and micro-fluctuation of the hydraulic oil itself in the process of reciprocating motion, and achieve the effect of accurate stroke control.
Example 2:
as shown in fig. 1 and 2, the method is further optimized on the basis of the embodiment: tapered roller bearings 501 which are matched with the outer wall of the extending part of the screw rod 402 are arranged in the bearing seat 5 at intervals. By the arrangement of the tapered roller bearing 501, the bearing seat 5 and the screw rod 402 of the device can rotate more flexibly. A sealing ring matched with the outer wall of the extending part of the screw rod 402 is arranged in the cylinder bottom 3. By the arrangement of the sealing ring, the screw rod 402 and the cylinder bottom 3 of the device have the sealing and oil leakage preventing effects. And a limit nut 7 is arranged on one side of the bearing seat 5, and the limit nut 7 is arranged on the outer wall of the part, extending out of the bearing seat 5, of the screw rod 402. Through the setting of limit nut 7, make this device can further conveniently fix a position installation lead screw 402 on bearing frame 5. The side of the cylinder body 1 far away from the cylinder head 2 is provided with a control valve 6, and the control valve 6 is communicated with the cylinder body 1 through an oil pipe 8. Through the arrangement of the control valve 6 and the oil pipe 8, the device can further conveniently control the reciprocating motion of the piston rod 4 in the oil cylinder.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. The foregoing is merely illustrative of the preferred embodiments of this utility model, and it is noted that there is objectively no limit to the specific structure disclosed herein, since numerous modifications, adaptations and variations can be made by those skilled in the art without departing from the principles of the utility model, and the above-described features can be combined in any suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present utility model.
Claims (5)
1. The structure for eliminating the influence of liquid compression and liquid impulse on the reciprocating motion of the piston comprises an oil cylinder, wherein the oil cylinder consists of a cylinder body (1), a cylinder head (2) and a cylinder bottom (3), and a piston rod (4) is slidably arranged in the oil cylinder, and is characterized in that: one side that piston rod (4) was kept away from to cylinder end (3) is provided with bearing frame (5), piston rod (4) include with piston sleeve (401) of cylinder body (1) inner wall adaptation, piston sleeve (401) one side is provided with and stretches out movable rod (404) outside cylinder end (2), lead screw (402) are installed in movable rod (404) internal rotation, lead screw (402) one side stretches out cylinder end (3) and bearing frame (5), be provided with in piston sleeve (401) lead screw nut (403) with lead screw (402) adaptation.
2. The structure for eliminating the influence of liquid compression and liquid momentum on the reciprocating motion of a piston according to claim 1, wherein: tapered roller bearings (501) which are matched with the outer wall of the extending part of the screw rod (402) are arranged in the bearing seat (5) at intervals.
3. The structure for eliminating the influence of liquid compression and liquid momentum on the reciprocating motion of a piston according to claim 1, wherein: and a sealing ring matched with the outer wall of the extending part of the screw rod (402) is arranged in the cylinder bottom (3).
4. The structure for eliminating the influence of liquid compression and liquid momentum on the reciprocating motion of a piston according to claim 1, wherein: one side of the bearing seat (5) is provided with a limit nut (7), and the limit nut (7) is arranged on the outer wall of the part of the screw rod (402) extending out of the bearing seat (5).
5. The structure for eliminating the influence of liquid compression and liquid momentum on the reciprocating motion of a piston according to claim 1, wherein: one side of the cylinder body (1) far away from the cylinder head (2) is provided with a control valve (6), and the control valve (6) is communicated with the cylinder body (1) through an oil pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320514087.9U CN219888388U (en) | 2023-03-16 | 2023-03-16 | Structure for eliminating influence of liquid compression and liquid impulse on reciprocating motion of piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320514087.9U CN219888388U (en) | 2023-03-16 | 2023-03-16 | Structure for eliminating influence of liquid compression and liquid impulse on reciprocating motion of piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219888388U true CN219888388U (en) | 2023-10-24 |
Family
ID=88400587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320514087.9U Active CN219888388U (en) | 2023-03-16 | 2023-03-16 | Structure for eliminating influence of liquid compression and liquid impulse on reciprocating motion of piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219888388U (en) |
-
2023
- 2023-03-16 CN CN202320514087.9U patent/CN219888388U/en active Active
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