CN217401541U - One-way hydraulic damping device - Google Patents
One-way hydraulic damping device Download PDFInfo
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- CN217401541U CN217401541U CN202221151732.7U CN202221151732U CN217401541U CN 217401541 U CN217401541 U CN 217401541U CN 202221151732 U CN202221151732 U CN 202221151732U CN 217401541 U CN217401541 U CN 217401541U
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Abstract
The utility model relates to an one-way hydraulic damping device, include: the piston provided with a central hole is fixed at one end of the piston rod, a through hole, a ring groove and a liquid discharge groove which penetrate through an outer cylindrical surface and the central hole are formed in the outer cylindrical surface of the piston, the chamber sealing ring is sleeved on the ring groove of the piston and divides the inner cavity of the cylinder into an upper chamber and a lower chamber, one end of the piston rod, which is positioned in the cylinder body, penetrates through the central hole of the piston and is in clearance fit with the central hole, and when the piston rod extends out, liquid in the upper chamber enters the lower chamber through the piston through hole and the clearance between the piston rod and the piston, so that damping is provided for the extension of the piston rod; when the piston rod retracts, liquid in the lower cavity enters the upper cavity through the liquid discharge groove, so that the piston rod is reset quickly. The utility model discloses the mechanism is simple reliable, when being applied to mechanical device, can provide the damping effectively to mechanical motion and cushion and reset fast.
Description
Technical Field
The utility model relates to the field of machinary, especially, relate to a hydraulic damping device who cushions motion.
Background
The existing hydraulic damping device is bidirectional damping buffering, namely, a piston rod has damping force when extending out and also has damping force when retracting, and the hydraulic damping device is not suitable for mechanical devices which need unidirectional damping requirements.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to provide a one-way hydraulic damping device for solving the above problems. In order to achieve the above purpose, the utility model provides a following technical scheme:
a one-way hydraulic damping device comprising: the device comprises a cylinder body, a piston rod, a piston, a positioning ring, an opening sealing ring, a cavity sealing ring, a guide sleeve and liquid, wherein one end of the cylinder body is closed, and the other end of the cylinder body is opened; the guide sleeve, the opening sealing ring, the positioning ring, the piston and the cavity sealing ring are sequentially arranged in the cylinder body; the one end of piston rod stretches into the cylinder body, uide bushing, oral area sealing washer, holding ring all overlap on the piston rod, the piston reaches the cavity sealing washer sets up the piston rod stretches into the inside one end of cylinder body, the piston is provided with the centre bore along the axial, radially is provided with the annular, be provided with through-hole and the outage groove that runs through outer face of cylinder and centre bore on the outer face of cylinder of piston, the cavity sealing washer suit in just cut apart the cylinder inner chamber on the annular of piston and be two upper and lower cavities, the axle head that the piston rod is located the cylinder body passes the centre bore of piston and with centre bore clearance fit.
Furthermore, the mouth sealing ring is arranged between the guide sleeve and the positioning ring and is used for sealing liquid in the cylinder body.
Furthermore, the positioning ring is fixedly connected with the cylinder body and used for limiting the stroke of the piston rod.
Further, the holding ring is provided with the recess, the inboard of cylinder body is provided with the arch, the arch with the recess cooperation sets up, and the holding ring is fixed in on the cylinder body through this cooperation.
Furthermore, the upper and lower chambers of the cylinder body are filled with liquid.
One end of the piston rod extending out of the outer part is connected with a movement mechanism, when the movement mechanism buffers and decelerates in the extending direction of the piston rod, the piston rod is drawn to extend out, a cavity sealing ring seals a liquid discharge groove, liquid in the upper cavity enters the lower cavity through a through hole, a small gap between the shaft end of the piston rod and a central hole of the piston, damping force is generated, and the extending speed of the piston rod is controlled; when the piston rod retracts, the liquid discharge groove is opened by the cavity sealing ring, and liquid in the lower cavity enters the upper cavity through the large-caliber liquid discharge groove, so that the piston rod is reset quickly. The size of the fit clearance between the shaft end of the piston rod and the center hole of the piston directly influences the damping force of the piston rod, the fit clearance of various specifications can be set, and the appropriate specification is selected according to specific damping requirements.
Has the advantages that: the device of the utility model is simple in structure is reliable, realizes one-way damping through the valve that the cavity sealing washer constitutes with the flowing back groove. Will the utility model discloses when being applied to mechanical motion device, can provide damping buffering and quick reset to mechanical motion effectively.
Drawings
Fig. 1 is a perspective view of the device of the present invention.
Fig. 2 is a cross-sectional view of the device of the present invention.
Fig. 3 is a cross-sectional enlarged view of the piston part of the chamber sealing ring of the device in the liquid discharge groove state.
Fig. 4 is a magnified view of the piston section of the chamber sealing ring of the device of the present invention in the state of opening the liquid discharge groove.
Fig. 5 is an enlarged view of a cross-sectional view of the positioning ring of the device of the present invention.
Fig. 6 is a piston outline view of the device of the present invention with the piston rod extending out of the one-way damping.
Fig. 7 is a piston profile view of the device of the present invention with the piston rod retracted in the unidirectional damping.
Detailed Description
The following description of the embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to the embodiments, and all similar mechanisms and similar variations thereof adopted by the present invention should be included in the protection scope of the present invention.
A unidirectional hydraulic damping device as shown in fig. 1 to 6, comprising: the device comprises a cylinder body (2), a piston rod (1), a piston (7), a positioning ring (4), an opening sealing ring (5), a chamber sealing ring (8), a guide sleeve (3), liquid, a nut (6) and a check ring (9). One end of the cylinder body (2) is closed, and the other end is opened; the guide sleeve (3), the opening sealing ring (5), the positioning ring (4), the piston (7), the chamber sealing ring (8), the nut (6) and the check ring (9) are sequentially arranged in the cylinder body (2); one end of a piston rod (1) extends into a cylinder body (2), a guide sleeve (3), an opening sealing ring (5) and a positioning ring (4) are all sleeved on the piston rod (1), and a piston (7) and a cavity sealing ring (8) are arranged at one end of the piston rod (1) extending into the cylinder body (2). As shown in FIG. 6, the piston (7) is provided with a central hole (705) along the axial direction, a ring groove (702) along the radial direction, a through hole (701) penetrating through the outer cylindrical surface (707) and the central hole (705) and a liquid discharge groove (704 a) arranged at the upper part of the ring groove (702) and communicated with the ring groove (702) are arranged on the outer cylindrical surface (707) of the piston (7), and a counter bore (703) is arranged at the bottom of the piston (7). The cavity sealing ring (8) is sleeved on a ring groove (702) of the piston (7) and can move in the ring groove (702) along the axial direction, the cavity sealing ring (8) divides the inner cavity of the cylinder body (2) into an upper cavity (201) and a lower cavity (202), and the shaft end (102) of the piston rod (1) positioned in the cylinder body (2) penetrates through a center hole (705) of the piston (7) and is in clearance fit with the center hole (705). As shown in fig. 5, the mouth seal ring (5) is provided between the guide sleeve (3) and the positioning ring (4) to seal the liquid in the cylinder (2). The positioning ring (4) is fixedly connected with the cylinder body (2) and used for limiting the stroke shaft end of the piston rod. The positioning ring (4) is provided with a groove (401), the inner side of the cylinder body (2) is provided with a protrusion (501), the protrusion (501) is matched with the groove (401), and the positioning ring (4) is fixed on the cylinder body (2) through the matching. The upper chamber (201) and the lower chamber (202) of the cylinder body (2) are filled with liquid. As shown in fig. 3 and 4, a thread (103) is arranged at one end of the piston rod (1) extending into the cylinder body (2), a threaded hole (706) is formed in the piston (7), the piston (7) is connected with the thread (103) of the piston rod (1) through the threaded hole (706), the nut (6) is fixed on the threaded portion (101) of the piston rod (1) to further lock the piston (7), and the retainer ring (9) is fixed at the end of the piston rod (1).
The utility model discloses the device uses when mechanical motion mechanism, as follows to motion mechanism's one-way damping mechanism:
as shown in fig. 3, when the motion mechanism decelerates in the direction in which the piston rod (1) extends, the piston rod (1) is pulled to extend, the chamber sealing ring (8) seals the liquid discharge groove (704 a), liquid in the upper chamber (201) enters the lower chamber (202) through a through hole (701), a small gap between the piston rod shaft end (102) and the piston center hole (705), damping force is generated, and the extension speed of the piston rod (1) is controlled; as shown in fig. 4, when the piston rod (1) retracts, the chamber sealing ring (8) opens the passage of the exhaust groove (704 a), and the liquid in the lower chamber (202) enters the upper chamber (201) through the exhaust groove (704 a), so that the piston rod (1) is rapidly reset. Piston rod axle head (102) directly influences with the size of the fit clearance of piston centre bore (705) the utility model discloses the fit clearance of multiple specification can be set up to the damping force of device, according to specific damping requirement, chooses suitable specification for use. If the direction of damping needs to be changed, as shown in fig. 7, the liquid discharge groove (704 b) is arranged at the lower part of the ring groove (702), so that damping in the retraction direction of the piston rod can be realized, and no damping in the extension direction can be realized.
The device of the utility model is simple in structure is reliable, realizes one-way damping through the valve that the cavity sealing washer constitutes with the flowing back groove. Will the utility model discloses when being applied to the mechanical motion device, can provide damping buffering and quick the reseing to mechanical motion effectively.
Claims (5)
1. A one-way hydraulic damping device comprising: the device comprises a cylinder body, a piston rod, a piston, a positioning ring, an opening sealing ring, a cavity sealing ring, a guide sleeve and liquid; one end of the cylinder body is closed, and the other end of the cylinder body is open; the guide sleeve, the opening sealing ring, the positioning ring, the piston and the cavity sealing ring are sequentially arranged in the cylinder body; the one end of piston rod stretches into the cylinder body, uide bushing, oral area sealing washer, holding ring all overlap on the piston rod, the piston reaches the cavity sealing washer sets up the piston rod stretches into the inside one end of cylinder body, its characterized in that: the piston is provided with the centre bore along the axial, radially is provided with the annular, be provided with through-hole and the outage groove that runs through outer cylinder face and centre bore on the outer cylinder face of piston, the cavity sealing washer suit in just cut apart on the annular of piston the inner chamber of cylinder body is two upper and lower cavities, the piston rod is located axle head in the cylinder body passes the centre bore of piston and with centre bore clearance fit.
2. The unidirectional hydraulic damping device of claim 1, wherein: the mouth sealing ring is arranged between the guide sleeve and the positioning ring.
3. The unidirectional hydraulic damping device of claim 1, wherein: the positioning ring is fixedly connected with the cylinder body.
4. The unidirectional hydraulic damping device of claim 1, wherein: the locating ring is provided with a groove, the inner side of the cylinder body is provided with a protrusion, and the protrusion is matched with the groove.
5. The unidirectional hydraulic damping device of claim 1, wherein: the upper and lower cavities of the cylinder body are filled with liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221151732.7U CN217401541U (en) | 2022-05-14 | 2022-05-14 | One-way hydraulic damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221151732.7U CN217401541U (en) | 2022-05-14 | 2022-05-14 | One-way hydraulic damping device |
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| Publication Number | Publication Date |
|---|---|
| CN217401541U true CN217401541U (en) | 2022-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221151732.7U Active CN217401541U (en) | 2022-05-14 | 2022-05-14 | One-way hydraulic damping device |
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| CN (1) | CN217401541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738424A (en) * | 2022-05-14 | 2022-07-12 | 上海琦天汽车零部件有限公司 | One-way hydraulic damping device |
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2022
- 2022-05-14 CN CN202221151732.7U patent/CN217401541U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738424A (en) * | 2022-05-14 | 2022-07-12 | 上海琦天汽车零部件有限公司 | One-way hydraulic damping device |
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