CN211550150U - Quick-insertion and time-delay separation device - Google Patents
Quick-insertion and time-delay separation device Download PDFInfo
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- CN211550150U CN211550150U CN201922359050.XU CN201922359050U CN211550150U CN 211550150 U CN211550150 U CN 211550150U CN 201922359050 U CN201922359050 U CN 201922359050U CN 211550150 U CN211550150 U CN 211550150U
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Abstract
The utility model discloses a quick insertion and time delay separation device, which comprises a shell, a piston rod, a sleeve, a first elastic part and a second elastic part; the head of the piston rod and the head of the shell form a sealing end, the tail of the piston rod is provided with a limiting part, a first accommodating cavity and a second accommodating cavity are respectively formed between the limiting part and the tail and the head of the shell, a first elastic piece and a second elastic piece which are axially deformed are respectively arranged in the first accommodating cavity and the second accommodating cavity, one end of the second elastic piece is abutted with a sleeve which is coaxial with the piston rod, radial gaps are respectively formed among the sleeve, the piston rod and the cavity, and the end part of the sleeve can be abutted with the limiting part for sealing or separating; when the piston rod moves along the axial direction, the damping liquid can flow between the first accommodating cavity and the second accommodating cavity. The utility model has the advantages that: the device can achieve rapid compression and slow extension, can reduce compression time, can achieve the effect of delayed execution, and has the advantages of simple structure, low cost and reliable technology.
Description
Technical Field
The utility model relates to an actuating mechanism especially relates to a quick insertion, time delay separator.
Background
The electronic time-delay trigger is widely applied to the automation industry and is a time-delay execution component. Although the electronic time delay trigger is mature and widely applied, a fatal disadvantage is that a complete set of execution device can be realized only by matching a power supply system and an electric execution mechanism, and the situation that the power supply and the electric execution mechanism cannot be provided exists in the actual working condition, so that certain limitation is realized.
As in application No.: 201120453349.2, it is characterized in that it includes a packaging metal shell, a power supply processing circuit is set in the packaging metal shell and connected with a programmable frequency division timing circuit, the programmable frequency division timing circuit is connected with an output drive circuit. The power supply processing circuit comprises a resistor (R3), a capacitor (C2) and a voltage stabilizing tube (Dl) which are connected in parallel, wherein the resistor (R3) is connected with one end of a power supply (VCC) in series, and one end of the capacitor (C2) and one end of the voltage stabilizing tube (Dl) which are connected in parallel are grounded. It follows that even small, low power electronic time delays require a series of electrical components such as resistors and capacitors, are expensive, are limited by the power supply, and cannot operate without power supply support.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve lies in: how to solve the problem that the existing electronic time delay equipment depends on a power supply and has high cost.
The utility model discloses a following technical means realizes solving above-mentioned technical problem:
a quick insertion and delay separation device comprises a shell with a cavity along the axial direction, a piston rod which is movably matched with the cavity along the axial direction and the head of which extends to the outside of the shell, and a sleeve which is coaxial with the piston rod; the sleeve is arranged in the shell, the head of the piston rod and the head of the shell form a sealing end, the tail of the piston rod is provided with a limiting part limited at the end of the sleeve, the end of the sleeve can be abutted and sealed or separated with the limiting part, the inner wall of the sleeve and the piston rod have a radial gap, a radial gap is arranged between the outer wall of the sleeve and the inner wall of the shell, the limiting part and the tail of the shell form a first accommodating cavity, the sleeve and the head of the shell form a second accommodating cavity, and a first elastic part and a second elastic part which can deform along the axial direction of the piston rod are respectively arranged in the first accommodating cavity and; when the piston rod moves along the axial direction, damping liquid can flow between the first accommodating cavity and the second accommodating cavity;
the piston rod further comprises an elastic pad, and the elastic pad is mounted on the inner wall of the shell and is located at the tail of the piston rod.
In the utility model, after the piston rod is quickly pressed in under the action of external force, the instantaneous pressure difference (the first containing cavity is larger than the second containing cavity) of the first containing cavity and the second containing cavity and the resistance of the damping liquid separate the limiting part of the piston rod from the sleeve to form a gap, the process simultaneously compresses the first elastic part, the damping liquid flows into the second containing cavity from the first containing cavity through the gap and the gap between the sleeve and the inner wall of the shell, the flow of the damping liquid is fast, namely the pressing-in speed of the piston rod is fast; when the piston rod is pressed in place and then kept, the sleeve is pushed to move left to be attached to the limiting part of the piston rod under the action of the second elastic piece, the gap disappears, and only the gap between the sleeve and the inner wall of the shell is left as a passage; after the external force applied to the piston rod is cancelled, the first elastic piece pushes the piston rod to extend out, the sleeve and the piston rod are always attached under the action of the instantaneous pressure difference (the first accommodating cavity is smaller than the second accommodating cavity) of the first accommodating cavity and the second accommodating cavity and the action of the second elastic piece, the flow of the damping liquid is slow, namely the withdrawing speed of the piston rod is slow, so that the effects of fast compression and slow extension are achieved, the compression time can be reduced, and meanwhile, the effect of delayed execution can be achieved; the utility model adopts passive design, the action process is driven by mechanical energy storage, the structure is simple, the cost is low, and the technology is reliable; can be widely applied to the low-cost automation industry.
Preferably, the piston further comprises a bearing mounted on the piston rod between the sleeve and the head of the housing. The bearing supports the piston rod and ensures the piston rod to accurately slide axially; and through the design, when the piston rod is abutted to the end part of the bearing through the sleeve, the extending length of the piston rod can reach the maximum value.
The shell comprises a shell and an end cover, the shell is of a conical step-shaped structure, the end cover is connected with the large end of the shell in a sealing mode through a sealing ring, and the head of the piston rod is connected with the small end of the shell in a sealing mode through an oil seal. The split type design of casing, the equipment of being convenient for.
Preferably, the inner side surface of the end cover is provided with a cylindrical rod, the limiting part is provided with a cylindrical rod, and two ends of the first elastic part are respectively sleeved on the two cylindrical rods.
Preferably, the limiting part is a conical surface, the part of the sleeve, which is abutted against the limiting part, is a conical hole, and the conical surface is attached to the conical hole.
Preferably, the sleeve is of a cylindrical structure, an inner hole is formed in the sleeve in an axial penetrating mode, a step surface is arranged at one end, away from the bearing, of the inner hole, the second elastic piece is arranged in the inner hole and sleeved on the piston rod, and two ends of the second elastic piece abut against the step surface and the end face of the bearing respectively.
Preferably, the first elastic member and the second elastic member are both springs.
Preferably, the elastic pad is an accumulator.
The accumulator may be made of a compressible material, such as: foam rubber, generally speaking, the damping fluid volume is incompressible, providing a compressible region in the first receiving chamber when the piston rod is pressed into the inner chamber; the kinetic energy of the moving object is converted into internal energy through the pressure accumulator, so that the maintenance amount is reduced, and the service life is prolonged.
Preferably, the shell further comprises a split sleeve, a stepped hole is formed in the split sleeve and comprises a first inner hole and a second inner hole, the diameters of the first inner hole and the second inner hole are sequentially increased, and the first inner hole is sleeved on the head of the shell.
Preferably, the head of the shell is provided with a hole which penetrates through the shell in the radial direction, the head of the piston rod is provided with a groove corresponding to the hole, and a steel ball is arranged in the groove; in the initial state, the steel ball is limited in the hole and the groove.
The utility model has the advantages that:
(1) the utility model can achieve the effects of rapid compression, slow extension, reduced compression time and delayed execution; the utility model adopts passive design, the action process is driven by mechanical energy storage, the structure is simple, the cost is low, and the technology is reliable; the method can be widely applied to the low-cost automation industry;
(2) the bearing supports the piston rod and ensures the piston rod to accurately slide axially; through the design, the maximum extending length of the piston rod can be achieved when the piston rod is abutted to the end part of the bearing through the sleeve;
(3) the split design of the shell is convenient for assembly;
(4) the accumulator may be made of a compressible material, such as: foam rubber, generally speaking, the damping fluid volume is incompressible, providing a compressible region in the first receiving chamber when the piston rod is pressed into the inner chamber; the kinetic energy of the moving object is converted into internal energy through the pressure accumulator, so that the maintenance amount is reduced, and the service life is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a quick insertion and delay separation apparatus according to a first embodiment of the present invention;
FIG. 2 is a schematic view of the pressing operation of the present invention;
FIG. 3 is a schematic view of the second press-in operation process of the present invention;
FIG. 4 is a schematic view of the pressing operation of the present invention;
FIG. 5 is a schematic view of the stretching operation of the present invention;
FIG. 6 is a schematic view of the second stretching operation of the present invention;
fig. 7 is a schematic view of the present invention recovering to the initial state.
Reference numbers in the figures: a shell 1, a shell 11, an end cover 12, a sealing ring 13, an oil seal 14,
The device comprises a piston rod 2, a limiting part 21, steel balls 22, a sleeve 3, a bearing 4, a first elastic piece 5, a second elastic piece 6, an elastic pad 7 and a split-combination sleeve 8.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, a quick insertion and delay separation device comprises a housing 1 with a cavity arranged along an axial direction, a piston rod 2 which is movably matched with the cavity along the axial direction and the head of which extends out of the housing, a sleeve 3 arranged in the housing, a bearing 4, a first elastic element 5, a second elastic element 6, an elastic pad 7 and a separating and combining sleeve 8;
the head of the piston rod 2 extends out of the shell 1, the head of the piston rod 2 and the head of the shell 1 form a sealed end, the tail of the piston rod 2 is provided with a limiting part 21 limited at the left end of the sleeve 3, so that the piston rod 2 is always positioned at the left end of the sleeve 3, the left end of the sleeve 3 can be abutted and sealed or separated with the limiting part 21, the inner wall of the sleeve 3 and the outer wall of the piston rod 2 are provided with a radial gap, a radial gap is formed between the outer wall of the sleeve 3 and the inner wall of the shell 1, the limiting part 21 and the tail of the shell 1 form a first accommodating cavity, the sleeve 3 and the head of the shell 1 form a second accommodating cavity, and the first accommodating cavity and the second accommodating cavity are respectively provided with a first elastic part 5; when the piston rod 2 moves along the axial direction, the damping fluid can flow between the first accommodating cavity and the second accommodating cavity.
It should be noted that: first holding chamber and second holding chamber can produce the change under the state of difference, here, with the clearance between 3 outer walls of sleeve and the casing 1 inner wall, can neglect, so, first holding chamber is just for spacing portion 21 surface (and sleeve left end face) and be in the cavity between the spacing portion 21 left side casing inner surface, and the second holding chamber is the cavity between 3 internal surfaces of sleeve and the piston rod surface to and the cavity between 2 right-hand member face of sleeve and the 4 left end faces of bearing.
The shell 1 comprises a shell 11 and an end cover 12, the shell 1 is in a split type design and is convenient to assemble, the shell 11 is of a conical stepped structure, the end cover 12 is in sealing connection with the large end of the shell 11 through a sealing ring 13, a through stepped hole is formed in the shell 11, the piston rod 2 is in sealing connection with the small end of the shell 11 through an oil seal 14, and the sealing connection ensures that damping liquid does not flow out; the sleeve 3 and the bearing 4 are arranged in the shell 11, and the bearing 4 is arranged on the left side of the oil seal 14; a gap is left between the sleeve 3 and the inner wall 11 of the shell.
The left end of the cylindrical rod of the piston rod 2 is a tail part, the tail part is provided with a limiting part 21, the right side of the limiting part 21 is a conical surface, correspondingly, the left end of the sleeve 3 is a conical hole, when the sleeve is not pressed in, the conical surface is attached to the conical hole, the left side of the limiting part 21 is provided with the cylindrical rod, correspondingly, the right side of the end cover 12 is provided with the cylindrical rod, and two ends of the first elastic part 5 are respectively sleeved on the cylindrical rod of the limiting part 21 and the cylindrical rod of the end cover 12 and abut against the limiting part 21 and the end cover 12; the right end of the piston rod 2 is a head part, the head part is provided with a groove, and a steel ball 22 is arranged in the groove.
The sleeve 3 is of a cylindrical structure, a step hole is formed in an inner hole of the sleeve 3, the left end of the second elastic piece 6 abuts against the step surface of the step hole, and the other end of the second elastic piece abuts against the left end face of the bearing 4.
In this embodiment, the first elastic member 5 and the second elastic member 6 are both springs, and the first elastic member 5 is larger than the second elastic member 6 in specification. Under the action of the two springs, the volumes of the first accommodating cavity and the second accommodating cavity are changed in the process that the piston rod 2 moves along the axial direction.
In the embodiment, the bearing 4 is a linear bearing, the inner ring of the bearing is in clearance fit with the piston rod 2, the outer ring of the bearing is in interference fit with the inner wall of the shell 11, and the bearing 4 supports the piston rod 2 to ensure accurate axial sliding of the piston rod; and through the design, can realize when piston rod 2 passes through sleeve 3 butt at the bearing tip, piston rod 2 extension length reaches the maximum value, and the locking recess of piston rod 2 front end corresponds with the steel ball, makes the steel ball be free state.
Also included in this embodiment is a resilient pad 7, said resilient pad 7 being mounted on the inner wall of the housing 1 between the piston rod 2 and the end cap 12. The elastic pad 7 is made of a compressible material (such as foam rubber), generally speaking, the damping fluid volume cannot be compressed, and when the piston rod is pressed into the inner cavity, a compressible area is provided in the first accommodating cavity; the kinetic energy of the moving object is converted into internal energy through the elastic cushion, so that the maintenance amount is reduced, and the service life is prolonged. In this embodiment, the elastic pad 7 is an accumulator.
As shown in fig. 2, in this embodiment, the split-combination sleeve 8 further includes a sleeve-shaped structure with an open left end and a blind right end, the split-combination sleeve 8 has a stepped inner hole, and a first inner hole and a second inner hole are sequentially formed from left to right, the diameter of the first inner hole at the left end is equal to or slightly larger than the outer diameter of the right end of the housing 11, and the diameter of the second inner hole at the right end of the split-combination sleeve 8 is larger than the diameter of the first inner hole at the left end; the first inner hole is sleeved at the head part of the shell 1. The head of the shell 1 is provided with a hole which penetrates through the shell in the radial direction, the head of the piston rod 2 is provided with a groove corresponding to the hole, and a steel ball 22 is arranged in the groove; as shown in fig. 2, in the initial state, the steel ball 22 is limited in the hole and the groove, and at this time, the piston rod 2 is also fixed. When the steel ball 22 has a moving space, as shown in fig. 3 and 4, the steel ball 22 can be extruded out from the smooth position of the piston rod 2; the locking and unlocking of the piston rod 2 can be realized; of course, the steel ball 22 is in the hole regardless of the state.
The utility model discloses a working process:
as shown in fig. 2, in the initial state, the steel ball 22 is located in the hole and the groove and is limited in the first inner hole of the combining sleeve 8, the limiting portion 21 is attached to the left end of the sleeve 3 under the action of the first elastic member 5, the right end of the sleeve 3 is attached to the left end of the bearing 4, and at this time, the second elastic member 6 is also in the compressed state, but the elastic force is smaller than the elastic force generated by the first elastic member 5.
As shown in fig. 3, the external force is pressed into the engaging and disengaging sleeve 8 until the right end of the piston rod 2 abuts against the vertical surface of the second inner hole of the engaging and disengaging sleeve 8, the right end of the piston rod 2 enters the second inner hole, and the steel ball 22 is free to be disengaged from the groove.
As shown in fig. 4, the external force continues to act on the separation sleeve 8 and then acts on the piston rod 2, after the piston rod 2 is rapidly pressed in under the action of the external force, the instantaneous pressure difference between the first accommodating cavity and the second accommodating cavity (the first accommodating cavity is larger than the second accommodating cavity) and the resistance of the damping fluid separate the limiting portion 21 of the piston rod from the left end of the sleeve 3 to form a gap, the first elastic member 5 is compressed in the process, the damping fluid flows into the second accommodating cavity from the first accommodating cavity through the gap and the gap between the sleeve 3 and the inner wall of the housing 1, and the flow of the damping fluid is fast, that is, the pressing speed of the piston rod is fast; the steel ball 22 is extruded out of the groove by the smooth surface of the piston rod 2.
As shown in fig. 5, after the piston rod 2 is pressed in place and kept, under the action of the second elastic element 6, the sleeve 3 is pushed to move left to be attached to the limit part 21 of the piston rod, the gap disappears, only the gap between the sleeve 3 and the inner wall of the shell 1 is left as a passage, and at the moment, the piston rod 2 and the right end of the shell 1 are abutted to the vertical surface of the second inner hole of the matching sleeve 8;
as shown in fig. 6, after the external force pressed into the piston rod 2 is removed, the first elastic member 5 pushes the piston rod 2 to extend out, the sleeve 3 and the piston rod 2 are always attached under the action of the instantaneous pressure difference between the first accommodating cavity and the second accommodating cavity (the first accommodating cavity is smaller than the second accommodating cavity) and the second elastic member 6, the flow of the damping fluid is slow, that is, the withdrawing speed of the piston rod 2 is slow;
it should be noted that: after the external force pressed into the piston rod 2 is cancelled, the separating and combining sleeve 8 is pulled out (moved to the right) by the external force, so that the pulling-out speed of the separating and combining sleeve 8 is greater than the pushing-out speed of the piston rod, and when the separating and combining sleeve 8 is pulled out, the separating and combining sleeve 8 is blocked by the steel balls and is forced to pause.
As shown in fig. 7, the first elastic element 5 continues to push the piston rod 2 to extend out and move right, the piston rod moves to the position where the groove corresponds to the steel ball 22, the steel ball 22 falls into the groove, correspondingly, the blocking state of the engaging and disengaging sleeve 8 is cancelled, so that the external force continues to pull out the engaging and disengaging sleeve 8 (move right), the steel ball 22 is locked in the first inner hole of the engaging and disengaging sleeve 8, and the device returns to the initial state shown in fig. 2.
Therefore, the effects of quick compression, slow extension, compression time reduction and delayed execution can be achieved; the utility model adopts passive design, the action process is driven by mechanical energy storage, the structure is simple, the cost is low, and the technology is reliable; can be widely applied to the low-cost automation industry.
The skilled person can design the gap between the piston rod 2 and the inner wall of the housing 11 through design and experiment to determine the mechanism delay time, and in addition, the main parameters influencing the mechanism delay time are: the viscosity of the damping fluid, the two springs and the gap between the limiting part and the left end of the sleeve can be adjusted according to the requirement of delay time during actual design.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A quick insertion and time delay separation device is characterized by comprising a shell, a piston rod and a sleeve, wherein the shell is provided with a cavity along the axial direction, the piston rod is movably matched with the cavity along the axial direction, and the head of the piston rod extends out of the shell; the sleeve is arranged in the shell, the head of the piston rod and the head of the shell form a sealing end, the tail of the piston rod is provided with a limiting part limited at the end of the sleeve, the end of the sleeve can be abutted and sealed or separated with the limiting part, the inner wall of the sleeve and the piston rod have a radial gap, a radial gap is arranged between the outer wall of the sleeve and the inner wall of the shell, the limiting part and the tail of the shell form a first accommodating cavity, the sleeve and the head of the shell form a second accommodating cavity, and a first elastic part and a second elastic part which can deform along the axial direction of the piston rod are respectively arranged in the first accommodating cavity and; when the piston rod moves along the axial direction, damping liquid can flow between the first accommodating cavity and the second accommodating cavity;
the piston rod further comprises an elastic pad, and the elastic pad is mounted on the inner wall of the shell and is located at the tail of the piston rod.
2. A quick-insertion, time-lapse separating device according to claim 1, further comprising a bearing mounted on the piston rod between the sleeve and the housing head.
3. The quick-insertion and time-delay separation device as claimed in claim 1, wherein the housing comprises a shell and an end cover, the shell is of a conical step-shaped structure, the end cover is connected with the large end of the shell in a sealing mode through a sealing ring, and the head of the piston rod is connected with the small end of the shell in a sealing mode through an oil seal.
4. The quick-insertion and time-delay separation device as claimed in claim 3, wherein the inner side surface of the end cap is provided with a cylindrical rod, the limiting portion is provided with a cylindrical rod, and two ends of the first elastic member abut against the two cylindrical rods respectively.
5. The quick-insertion and time-delay separation device as claimed in claim 1, wherein the limiting portion is a conical surface, the portion of the sleeve abutting against the limiting portion is a conical hole, and the conical surface is attached to the conical hole.
6. The quick-insertion and time-delay separation device as claimed in claim 5, wherein the sleeve is of a cylindrical structure, an inner hole penetrates through the sleeve in the axial direction, a step surface is arranged at one end, away from the bearing, of the inner hole, the second elastic member is arranged in the inner hole and sleeved on the piston rod, and two ends of the second elastic member abut against the step surface and the end surface of the bearing respectively.
7. The quick-insertion, time-lapse separating device of claim 1, wherein the first and second elastic members are springs.
8. A quick-insertion, time-lapse separating apparatus according to claim 1, wherein the resilient pad is a pressure accumulator.
9. The quick-insertion and time-delay separation device as claimed in claim 1, further comprising a separation and combination sleeve, wherein a stepped hole is arranged in the separation and combination sleeve, the stepped hole comprises a first inner hole and a second inner hole, the diameters of the first inner hole and the second inner hole are sequentially increased, and the first inner hole is sleeved on the head of the shell.
10. The quick insertion and time-delay separation device as claimed in claim 1 or 9, wherein the head of the housing is provided with a hole which is arranged to penetrate through in the radial direction, the head of the piston rod is provided with a groove corresponding to the hole, and a steel ball is arranged in the groove; in the initial state, the steel ball is limited in the hole and the groove.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922359050.XU CN211550150U (en) | 2019-12-24 | 2019-12-24 | Quick-insertion and time-delay separation device |
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| CN201922359050.XU CN211550150U (en) | 2019-12-24 | 2019-12-24 | Quick-insertion and time-delay separation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120455A (en) * | 2019-12-24 | 2020-05-08 | 安徽博微联控科技有限公司 | Quick-insertion and time-delay separation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120455A (en) * | 2019-12-24 | 2020-05-08 | 安徽博微联控科技有限公司 | Quick-insertion and time-delay separation device |
| CN111120455B (en) * | 2019-12-24 | 2024-04-30 | 安徽博微联控科技有限公司 | Quick inserting and time-delay separating device |
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