CN114151406A - Piston device - Google Patents
Piston device Download PDFInfo
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- CN114151406A CN114151406A CN202111422551.3A CN202111422551A CN114151406A CN 114151406 A CN114151406 A CN 114151406A CN 202111422551 A CN202111422551 A CN 202111422551A CN 114151406 A CN114151406 A CN 114151406A
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- transmission mechanism
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- 230000007246 mechanism Effects 0.000 claims abstract description 402
- 230000005540 biological transmission Effects 0.000 claims abstract description 103
- 230000000295 complement effect Effects 0.000 claims description 9
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000033001 locomotion Effects 0.000 description 21
- 238000003754 machining Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 239000000243 solution Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/226—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having elastic elements, e.g. springs, rubber pads
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
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- General Engineering & Computer Science (AREA)
- Transmission Devices (AREA)
Abstract
An embodiment of the present disclosure provides a piston device, including: actuating mechanism, balanced mechanism and transmission mechanism, wherein: the driving mechanism is suitable for driving the balancing mechanism to move; the balance mechanism is positioned between the driving mechanism and the transmission mechanism, so that the transmission mechanism is not in direct contact with the driving mechanism and is suitable for moving relative to the driving mechanism; the transmission mechanism is linked with the balance mechanism and is suitable for transmitting energy. By adopting the scheme, the mechanical damage can be reduced, the working performance is improved, and the service life is prolonged.
Description
Technical Field
The embodiment of the specification relates to the technical field of machine manufacturing, in particular to a piston device.
Background
In a machine tool, energy can be transmitted to other work pieces by the reciprocating motion of a piston device. However, the piston device is subjected to reverse impact force when moving, thereby causing mechanical damage. For example, when the piston device moves, the processing object is suddenly broken, and a large reverse impact force is applied to the piston device, so that a shaft body, a bearing, and the like of the piston device are damaged.
These mechanical damages affect the working performance (e.g., the failure rate of the piston device is too high) and the service life (e.g., the piston device is damaged and cannot be repaired, and can only be scrapped), thereby affecting the processing quality of the processing machine.
Therefore, there is a need in the art to solve the problem of mechanical damage to the piston assembly.
Disclosure of Invention
In view of the above, the embodiments of the present disclosure provide a piston device, which can reduce mechanical damage, improve working performance and prolong service life.
Specifically, the present specification provides a piston device, including: actuating mechanism, balanced mechanism and transmission mechanism, wherein:
the driving mechanism is suitable for driving the balancing mechanism to move;
the balance mechanism is positioned between the driving mechanism and the transmission mechanism, so that the transmission mechanism is not in direct contact with the driving mechanism and is suitable for moving relative to the driving mechanism;
the transmission mechanism is linked with the balance mechanism and is suitable for transmitting energy.
Optionally, the transmission mechanism is further connected to a rotation mechanism, and is adapted to rotate relative to the balancing mechanism under the driving of the rotation mechanism, and transmit energy from the rotation mechanism.
Optionally, the driving mechanism and the balancing mechanism are in seamed connection through a complementary-shaped part.
Optionally, the drive mechanism comprises: a first female engagement portion; the balance mechanism includes: a first male engagement portion; the first concave joint part is suitable for accommodating the first convex joint part.
Optionally, the transfer mechanism and the balancing mechanism are engaged by complementary shaped portions.
Optionally, the transfer mechanism comprises: and the second male type joint part is suitable for being jointed with the balance mechanism.
Optionally, the balancing mechanism comprises: a first balance member and a second balance member; the first balance member and the second balance member are respectively located on both sides of the second male engagement portion.
Optionally, the drive mechanism comprises: a control part, a fixed part and a movable part; wherein:
the control part is suitable for controlling the movable part to move relative to the fixed part;
the movable part is suitable for being connected with the balance mechanism.
Optionally, a chamber is formed between the fixed part and the movable part; the control part is suitable for controlling the pressure of the chamber so as to enable the movable part to move relative to the fixed part.
Optionally, the fixing member comprises: and the limiting part is complementary with the opposite part of the movable part in shape and is suitable for limiting the moving range of the movable part.
Optionally, the piston device further comprises: and the elastic component is arranged between the driving mechanism and the balance mechanism.
Optionally, a diaphragm is disposed between the balancing mechanism and the transfer mechanism.
Optionally, the balance mechanism is sleeved outside the transmission mechanism, and the driving mechanism is sleeved outside the balance mechanism.
By adopting the piston device provided by the embodiment of the specification, the balance mechanism can be driven to move by the driving mechanism; the transmission mechanism can be not directly contacted with the driving mechanism and can move relative to the driving mechanism through a balance mechanism positioned between the driving mechanism and the transmission mechanism; energy can be transmitted by a transmission mechanism linked with the balance mechanism. Therefore, the balance mechanism can drive the transmission mechanism to move relative to the driving mechanism, so that a buffer interval is provided for the transmission mechanism, on one hand, the reverse impact energy between the balance mechanism and the transmission mechanism and the driving mechanism can be reduced, and on the other hand, the reverse impact energy transmitted from the outside can also be reduced; therefore, the influence of the reverse impact force on the piston device can be reduced, the mechanical damage of the piston device is effectively reduced, the service life of the piston device is prolonged, and the working performance of the piston device is improved. In addition, the balance mechanism can effectively avoid friction and collision between the driving mechanism and the transmission mechanism under the transitional action between the driving mechanism and the transmission mechanism, reduce the vibration of the piston device, and improve the stability of the piston device, thereby effectively ensuring the processing precision and the processing quality.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present specification, the drawings needed to be used in the embodiments of the present specification or in the description of the prior art will be briefly described below, it is obvious that the drawings described below are only some embodiments of the present specification, and it is also possible for a person skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a piston device in an embodiment of the present disclosure.
Fig. 2 is a schematic cross-sectional view of the piston device shown in fig. 1 moving in direction a.
Fig. 3 is a schematic cross-sectional view of the piston device shown in fig. 1 moving in direction b.
Fig. 4 is a schematic cross-sectional view of a drive mechanism of the piston device shown in fig. 1.
Fig. 5 is a schematic cross-sectional view of a balancing mechanism of the piston device shown in fig. 1.
Fig. 6 is a schematic cross-sectional view of another piston device provided by an embodiment of the present disclosure.
Fig. 7 is a schematic cross-sectional view of a balancing mechanism of the piston device shown in fig. 6.
Fig. 8 is a schematic cross-sectional view of the transfer mechanism of the piston device shown in fig. 6.
Fig. 9 is a schematic cross-sectional view of another piston device provided by an embodiment of the present disclosure.
Fig. 10 is a schematic cross-sectional view of the piston device of fig. 9 moving in direction c.
Fig. 11 is a schematic cross-sectional view of the piston device of fig. 9 moving in direction d.
Detailed Description
As described in the background, the reverse impact force to which the piston assembly is subjected during movement can reduce its service life and performance.
In order to solve the above problem, an embodiment of the present specification provides a piston device, including: drive mechanism, balanced mechanism and transmission mechanism. Wherein the balancing mechanism can be driven to move by the driving mechanism; the transmission mechanism can be not directly contacted with the driving mechanism and can move relative to the driving mechanism through a balance mechanism positioned between the driving mechanism and the transmission mechanism; energy can be transmitted by a transmission mechanism linked with the balance mechanism. The transmission mechanism can transmit energy from the balance mechanism and can also transmit energy from an external machine part; the energy of the external work may include the energy of the reverse impact generated by the impact.
Therefore, the balance mechanism can drive the transmission mechanism to move relative to the driving mechanism, so that a buffer interval is provided for the transmission mechanism, on one hand, reverse impact energy between the balance mechanism and the transmission mechanism and the driving mechanism can be reduced, and on the other hand, reverse impact energy transmitted from the outside can also be reduced; therefore, the influence of the reverse impact force on the piston device can be reduced, the mechanical damage of the piston device is effectively reduced, the service life of the piston device is prolonged, and the working performance of the piston device is improved.
In addition, the balance mechanism has a transition effect on the driving mechanism and the transmission mechanism (namely, the balance mechanism is positioned between the driving mechanism and the transmission mechanism, so that the transmission mechanism is not in direct contact with the driving mechanism), friction and collision between the driving mechanism and the transmission mechanism can be effectively avoided, vibration of the piston device is reduced, the stability of the piston device is improved, and therefore the processing precision and the processing quality are effectively guaranteed.
In conclusion, the piston device provided by the embodiment of the specification is more reliable and durable, and the comprehensive performance of a processing machine tool can be enhanced.
In specific implementation, the driving mechanism may set a moving direction of the balancing mechanism according to specific application scenarios and requirements, and the energy may be transferred through the transferring mechanism to provide energy for rear-end devices (such as processing tools, clamps, etc.), so as to implement corresponding operations.
For example, the driving mechanism may drive the balancing mechanism to move in a direction away from the rear end machine member, and further drive the transmission mechanism to move in a direction away from the rear end machine member, the transmission mechanism transmits energy from the balancing mechanism to the rear end machine member, and the rear end machine member receives the energy and is under a pulling force of the transmission mechanism, so that the rear end machine member can move forward. Therefore, operations such as forge welding, machining resetting and the like can be realized.
For another example, the driving mechanism may drive the balancing mechanism to move in a direction close to the rear end machine member, and further drive the transmission mechanism to move in a direction close to the rear end machine member, the transmission mechanism transmits energy from the balancing mechanism to the rear end machine member, and the rear end machine member receives the energy and is subjected to a thrust action of the transmission mechanism, so that the rear end machine member can move backward. Thereby, the operations of upset welding, cutting and the like can be realized.
It should be noted that the piston device provided in the embodiments of the present specification can be applied to machine tools of different machining types, such as a forging machine tool, a welding machine tool, and the like. The specific application scenario of the piston device is not particularly limited in this specification.
To enable those skilled in the art to more clearly understand and to practice the concepts, implementations and advantages of the present description, the same is described by way of example with reference to the accompanying drawings.
Referring to fig. 1, a schematic cross-sectional view of a piston device is provided in an embodiment of the present disclosure. In the present embodiment, the piston device M1 may include a driving mechanism 11, a balancing mechanism 12, and a transmission mechanism 13.
Wherein: the driving mechanism 11 is suitable for driving the balancing mechanism to move along a direction a or a direction b; the balance mechanism 12 is located between the driving mechanism 11 and the transmission mechanism 13, so that the transmission mechanism 13 is not in direct contact with the driving mechanism 11, and is adapted to drive the transmission mechanism 13 to move along the direction a or the direction b under the driving of the driving mechanism 11, and move relative to the driving mechanism 11; the transmission mechanism 13, which is linked with the balance mechanism 12, is adapted to transmit energy, including energy from the balance mechanism 12.
Specifically, as shown in fig. 2, which is a schematic cross-sectional view of the piston device shown in fig. 1 moving along the direction a, with reference to fig. 1 and 2, the driving mechanism 11 is activated to drive the balancing mechanism 12 to move along the direction a. Then, the balance mechanism 12 is driven by the driving mechanism 11 to move the transmission mechanism 13 along the direction a, so that a rear end device (not shown in the figure) can move along the direction a. When the drive mechanism 11 reaches its extreme position in the direction of movement a, the balancing mechanism 12 and the transmission mechanism 13 can also move relative to the drive mechanism 11 in the direction of movement a due to inertia.
Depending on the inertia, the balance mechanism 12 and the transmission mechanism 13 may continue to move to a stop along the moving direction a, or may be subjected to a reverse acting force when the balance mechanism 12 moves to its extreme position along the moving direction a, so as to drive the transmission mechanism 13 to move to a stop in a reverse direction (i.e. the moving direction b); it is also possible that said balancing mechanism 12 and said transfer mechanism 13 are reciprocated to a stop between extreme positions in both directions of movement of the balancing mechanism 12, i.e. in the directions of movement a and b. This specification does not specifically limit this.
Referring to fig. 3, which is a schematic cross-sectional view of the piston device shown in fig. 1 moving along the direction b, the driving mechanism 11 is activated to move the balancing mechanism 12 along the direction b, with reference to fig. 1 and 3. Then, the balance mechanism 12 is driven by the driving mechanism 11 to move the transmission mechanism 13 along the direction b, so that the rear end component can be moved along the direction b. When the drive mechanism 11 reaches its extreme position in the direction of movement b, the balancing mechanism 12 and the transmission mechanism 13 can also move relative to the drive mechanism 11 in the direction of movement b due to inertia.
Depending on the inertia, the balance mechanism 12 and the transmission mechanism 13 may continue to move to a stop along the moving direction b, or may be subjected to a reverse acting force when the balance mechanism 12 moves to its extreme position along the moving direction b, so as to drive the transmission mechanism 13 to move to a stop in a reverse direction (i.e. the moving direction a); it is also possible that said balancing mechanism 12 and said transfer mechanism 13 are reciprocated to a stop between extreme positions in both directions of movement of the balancing mechanism 12, i.e. in the directions of movement a and b. This specification does not specifically limit this.
It is understood that, according to the position relationship between the rear end machine element and the transmission mechanism, the acting force borne by the rear end machine element can be described as a pulling force or a pushing force, and the description does not specifically limit this.
In a specific implementation, the transmission mechanism may be further connected with other mechanisms to transmit the energy generated by the other mechanisms, wherein the other mechanisms may be internal mechanisms located inside the piston device, or external mechanisms located outside the piston device.
For example, the transmission mechanism may be connected to a rotation mechanism, wherein the rotation mechanism may be an internal mechanism located inside the piston device, or may be an external mechanism located outside the piston device. Therefore, when the rotating mechanism rotates, the transmission mechanism can be driven to rotate; the transmission mechanism may transmit energy generated from rotation of the rotation mechanism.
In specific implementation, the transmission mechanism can be rotatably connected with the balance mechanism, when the transmission mechanism is driven by the rotating mechanism to rotate relative to the balance mechanism and transmit energy from the rotating mechanism, friction between the transmission mechanism and the balance mechanism can be reduced, mechanical damage is effectively reduced, and further influence on machining precision and machining quality can be avoided.
In addition, when in actual application, according to application scenes and requirements, the transmission mechanism can transmit energy generated by movement, can also transmit energy generated by rotation, and can simultaneously transmit the energy generated by movement and the energy generated by rotation, so that the flexibility of the piston device is improved.
In a particular implementation, the drive mechanism and the balance member may be in a slotted engagement by complementary shaped portions. Wherein, the shape complementation can be concave-convex complementation; the complementary shaped region between the drive mechanism and the balance member has a clearance in the direction of movement.
In an alternative example, as shown in fig. 4, which is a schematic cross-sectional view of the drive mechanism of the piston arrangement of fig. 1, the drive mechanism 11 is shown to comprise a first female engagement portion 11A. As shown in fig. 5, which is a schematic sectional view of the balancing mechanism of the piston apparatus shown in fig. 1, the balancing mechanism 12 is shown to include a first male engagement portion 12A.
Referring to fig. 1 to 5, the first female engagement portion 11A of the driving mechanism 11 may receive the first male engagement portion 12A of the balancing mechanism 12 with a gap therebetween in the moving direction.
After the driving mechanism 11 is started, the gap between the first female engagement portion 11A and the first male engagement portion 12A is reduced at one side, and the gap between the other side is increased, so that the first female engagement portion 11A contacts one side of the first male engagement portion 12A to provide moving energy for the balancing mechanism 12; when the balancing mechanism 12 moves to the limit position, the first male engagement portion 12A of the balancing mechanism 12 can continue to move in the first female engagement portion 11A due to inertia, so that the balancing mechanism 12 and the transmission mechanism 13 can continue to move relative to the driving mechanism 11.
Depending on the magnitude of inertia, the first male joint portion 12A may move to a stop in the first female joint portion 11A, that is, the balance mechanism 12 and the transmission mechanism 13 move to a stop with respect to the drive mechanism 11; the first male engagement portion 12A may also be subjected to a reverse force when it touches the other side of the first female engagement portion 11A, and perform a reverse movement in the first female engagement portion 11A until it stops, so that the balancing mechanism 12 drives the transmission mechanism 13 to move reversely to stop with respect to the driving mechanism 11; it is also possible for the first male engagement portion 12A to reciprocate in the first female engagement portion 11A until it stops, so that the balancing mechanism 12 reciprocates the transmission mechanism 13 to a stop with respect to the drive mechanism 11. This specification does not specifically limit this.
In a specific implementation, the transfer mechanism and the balancing mechanism are connected through a complementary part. Wherein the shape complementation may be a concavo-convex complementation.
For example, as shown in fig. 6, which is a schematic cross-sectional view of another piston device provided in the embodiments of the present disclosure, the piston device M2 shown in fig. 6 may include a driving mechanism 21, a balancing mechanism 22, and a transmission mechanism 23.
The specific contents of the structure, connection relationship, function, and operation principle of the driving mechanism 21 and the balancing mechanism 22 can refer to the above related parts, and are not described herein again. The functions and the working principle of the transmission mechanism 23 can also refer to the piston device M1 shown in fig. 1, and are not described herein again.
Fig. 7 is a schematic cross-sectional view of the balancing mechanism of the piston arrangement of fig. 6, wherein the balancing mechanism 22 comprises a second female engagement portion 22A. As shown in fig. 8, which is a schematic sectional view of the transmission mechanism of the piston device shown in fig. 6, the transmission mechanism 23 is shown to include a second male engagement portion 23A. Referring to fig. 6 to 8 in combination, the second female engagement portion 22A is engaged and fitted with the second male engagement portion 23A, so that the transmission mechanism 23 can be linked with the balance mechanism 22.
In specific implementation, the friction between the transfer mechanism and the balance mechanism is mainly the friction between the connection parts (such as the second convex connection part and the second concave connection part) by reducing the contact area between the transfer mechanism and the balance mechanism along the moving direction, so that the friction between the transfer mechanism and the balance mechanism can be reduced, the abrasion area can be effectively controlled, the mechanical damage can be reduced, the influence on the processing precision and the processing quality can be avoided, and the repair, the replacement and other maintenance operations can be conveniently implemented.
In specific implementation, the balance mechanism can be decomposed into a plurality of independent components which are respectively positioned on different sides of the second convex connecting part, so that the material of the balance mechanism can be saved, the assembly and the maintenance (such as repair, replacement and the like) are convenient, the inertia force can be dispersed among the independent components, the impact force of the balance mechanism and the transmission mechanism on the driving mechanism and other components (such as bearings) in the piston device is reduced, the interaction force among the balance mechanism and the transmission mechanism, among the driving mechanism and other components in the piston device is weakened, and the reverse impact energy of the piston device during reciprocating motion can be weakened.
In an alternative example, shown in fig. 9, which is a schematic cross-sectional view of another piston device provided in the embodiments of the present disclosure, the piston device M3 shown in fig. 9 may include a driving mechanism 31, a balancing mechanism 32, and a transmission mechanism 33.
The specific contents of the structure, the connection relationship, the function, the working principle, etc. of the driving mechanism 31 and the transmission mechanism 33 can refer to the above related parts, and are not described herein again. The balancing mechanism 32 may include a first balancing member 321 and a second balancing member 322; the first balance member 321 and the second balance member 322 may be located on both sides of the second male engagement portion of the transmission mechanism 33, respectively, and the first balance member 321 and the second balance member 322 may be engaged with the driving mechanism 31 through complementary-shaped portions, respectively.
As shown in fig. 10, which is a schematic cross-sectional view of the piston device shown in fig. 9 moving in the direction c, with reference to fig. 9 and 10, the driving mechanism 31 is activated, the gap between the first female engagement portion of the driving mechanism 31 and the first balance member 321 is reduced, and the gap between the first female engagement portion of the driving mechanism 31 and the second balance member 322 is increased. One side of the first female engagement portion of the driving mechanism 31 touches the first balance member 321, and the energy moving in the direction c is sequentially transmitted to the first balance member 321, the second male engagement portion of the transmission mechanism 33, and the second balance member 322, so that the balance mechanism 32 drives the transmission mechanism 33 to move in the direction c.
When the drive mechanism 31 reaches its extreme position in the direction of movement c, the first balancing part 321, the second male engagement part of the transmission mechanism 33 and the second balancing part 322 can also continue to move in the first female engagement part of the drive mechanism 31 due to inertia, so that the balancing mechanism 32 and the transmission mechanism 33 can continue to move in the direction of movement c relative to the drive mechanism 81.
Depending on the magnitude of the inertia, the first balancing member 321, the second male engagement portion of the transmission mechanism 33 and the second balancing member 322 may move to a stop in the first female engagement portion of the drive mechanism 31, i.e. the balancing mechanism 32 and the transmission mechanism 33 move to a stop relative to the drive mechanism 31; the second balance part 322 may also be subjected to a reverse acting force when touching the other side of the first female engagement portion of the driving mechanism 31, and is transmitted to the second male engagement portion of the transmission mechanism 33 and the first balance part 321, which move reversely in the first female engagement portion until stopping, so that the balance mechanism 32 drives the transmission mechanism 33 to move reversely to stop relative to the driving mechanism 31; it is also possible for the first balancing member 321, the second male engagement portion of the transfer mechanism 33 and the second balancing member 322 to reciprocate in the first female engagement portion of the drive mechanism 31 until stopped, so that the balancing mechanism 32 brings the transfer mechanism 33 to reciprocate to a stop relative to the drive mechanism 31. This specification does not specifically limit this.
As shown in fig. 11, which is a schematic cross-sectional view of the piston device shown in fig. 9 moving in the direction d, with reference to fig. 9 and 11, the driving mechanism 31 is activated, the gap between the first female engagement portion of the driving mechanism 31 and the second balance member 322 is reduced, and the gap between one side of the first female engagement portion of the driving mechanism 31 and the first balance member 321 is increased. The first female engagement portion of the driving mechanism 31 touches the second balance member 322, and the energy moving along the direction d is sequentially transmitted to the second balance member 322, the second male engagement portion of the transmission mechanism 33, and the first balance member 321, so that the balance mechanism 32 drives the transmission mechanism 33 to move along the direction d.
When the drive mechanism 31 reaches its extreme position in the direction of movement d, the first balancing part 321, the second male engagement part of the transmission mechanism 33 and the second balancing part 322 can also continue to move in the first female engagement part of the drive mechanism 31 due to inertia, so that the balancing mechanism 32 and the transmission mechanism 33 can continue to move in the direction of movement d relative to the drive mechanism 81.
Depending on the magnitude of the inertia, the first balancing member 321, the second male engagement portion of the transmission mechanism 33 and the second balancing member 322 may move to a stop in the first female engagement portion of the drive mechanism 31, i.e. the balancing mechanism 32 and the transmission mechanism 33 move to a stop relative to the drive mechanism 31; the second balance part 321 may also be subjected to a reverse acting force when touching the other side of the first female engagement portion of the driving mechanism 31, and is transmitted to the second male engagement portion of the transmission mechanism 33 and the first balance part 322, and the three reversely move in the first female engagement portion until stopping, so that the balance mechanism 32 drives the transmission mechanism 33 to reversely move to stop relative to the driving mechanism 31; it is also possible for the first balancing member 321, the second male engagement portion of the transfer mechanism 33 and the second balancing member 322 to reciprocate in the first female engagement portion of the drive mechanism 31 until stopped, so that the balancing mechanism 32 brings the transfer mechanism 33 to reciprocate to a stop relative to the drive mechanism 31. This specification does not specifically limit this.
In a specific implementation, the drive mechanism may include: a control part, a fixed part and a movable part; the control part is suitable for controlling the movable part to move relative to the fixed part; the movable part is adapted to be connected with the balancing mechanism. Under the control of the control part, the movable part can drive the balance mechanism to move relative to the fixed part, so that the balance mechanism drives the transmission mechanism to move relative to the fixed part.
The control part can change the external stress condition of the movable part and also can change the internal stress condition of the movable part. This specification does not specifically limit this.
In a specific implementation, a matching structural relationship may be set between the movable part and the fixed part of the driving mechanism, so that the control part of the driving mechanism changes the stress condition of the movable part to move the movable part relative to the fixed part.
For example, a chamber is formed between the fixed member and the movable member; the control part is suitable for controlling the pressure of the chamber so as to enable the movable part to move relative to the fixed part.
Specifically, the chamber is provided with a through opening; the control member may inject a filler into the chamber through a port of the chamber to vary the pressure within the chamber, the generated pressure acting on the movable member to move the movable member relative to the fixed member. Wherein, the filler can be gas or liquid.
Further, a plurality of chambers may be formed between the fixed member and the movable member, and the movable member may be reciprocated relative to the fixed member by controlling pressures in the plurality of chambers.
In a specific implementation, the fixed part of the driving mechanism may include: and the limiting part is complementary with the opposite part of the movable part of the driving mechanism in shape and is suitable for limiting the moving range of the movable part.
For example, referring to fig. 4 in combination with fig. 1 to 3, the driving mechanism 11 may include a fixed part 111 and a movable part 112. The fixing member 111 may include a female stopper portion 11B. The concave stopper portion 11B accommodates therein the opposite portions of the movable member 112 having complementary shapes, thereby restricting the range of movement of the movable member 112.
It is understood that the piston devices provided in other embodiments of this specification have driving mechanisms (for example, the fixed component 211 and the movable component 212 included in the driving mechanism 21 shown in fig. 6 to 8, and the fixed component 311 and the movable component 312 included in the driving mechanism 31 shown in fig. 9 to 11) with the same or similar structures, and specific reference may be made to the description of the driving mechanism 11 shown in fig. 1 to 4, and no further description is provided herein.
In a specific implementation, the piston device may further include an elastic member disposed between the driving mechanism and the balancing mechanism. The elastic component has deformation capacity and resilience capacity, and can provide buffering for the driving mechanism and the balance mechanism, so that the impact force between the driving mechanism and the balance mechanism is reduced, the inertia energy of the balance mechanism and the transmission mechanism can be consumed, and the reverse impact energy transmitted from the outside of the piston device can be consumed.
Wherein the number of the elastic members may be set according to a structural relationship of the driving mechanism and the balancing mechanism; the elastic member is connected to at least one of the driving mechanism and the balancing mechanism.
In an alternative example, referring to fig. 9 to 11, the piston device M3 may include an elastic member 54 and an elastic member 55. When the driving mechanism 31 drives the balance mechanism 32 to move, the elastic part 34 and the elastic part 35 are deformed, so that the impact force between the driving mechanism 31 and the balance mechanism 32 can be reduced; after the driving mechanism 31 reaches its extreme position, the driving mechanism 31 no longer provides the energy for the movement of the balancing mechanism 32, and the deformation capability and the resilience capability of the elastic members 34 and 35 can consume the inertia energy of the balancing mechanism 32 and the transmission mechanism 33, so that the balancing mechanism 32 and the transmission mechanism 33 gradually reach the state of force balance.
When the piston device M3 receives an external reverse impact, the reverse impact energy can be consumed by the deformation capability and the rebound capability of the elastic member 34 and the elastic member 35, so that the balance mechanism 32 and the transmission mechanism 33 gradually return to the state of force balance.
It is understood that the piston devices provided in other embodiments of the present disclosure also have elastic components with the same or similar positions, which can be specifically described with reference to the elastic components shown in fig. 9 to 11, and are not described again here.
In a specific implementation, the piston device may further include other components, such as bearings (e.g., bearing 14 and bearing 15 shown in fig. 1-3; bearing 24 and bearing 25 shown in fig. 6; bearing 36 and bearing 37 shown in fig. 9-11), connectors for connecting other mechanisms (e.g., flange 16 shown in fig. 1-3; flange 26 shown in fig. 6; flange 38 shown in fig. 9-11), and the like. The present specification does not specifically limit the constituent elements of the piston device.
In a specific implementation, a diaphragm may be disposed between the balancing mechanism and the transfer mechanism. The diaphragm may be formed on a surface of the balance mechanism opposite to the transmission mechanism, or may be formed on a surface of the transmission mechanism opposite to the balance mechanism. Wherein, the diaphragm can be formed by liquid such as hydraulic oil, lubricating oil and the like. Therefore, the damage of impact to the transmission mechanism, the balance mechanism and other machine parts can be reduced, the service life is prolonged, and the machining precision is ensured.
Further, the balancing mechanism can comprise a hollow cavity, an injection port and an outflow port are formed in the surface of the hollow cavity, liquid can be injected into the hollow cavity through the injection port, the liquid can flow between the balancing mechanism and the transfer mechanism through the outflow port, the diaphragm is automatically formed, the operation is convenient, and the damage to the diaphragm during assembly can be avoided.
In a specific implementation, in order to save space, the balance mechanism may be sleeved outside the transmission mechanism, and the driving mechanism may be sleeved outside the balance mechanism.
In specific implementation, specific shapes of the components in the piston device can be set according to specific application scenarios and requirements. This is not limited by the present description.
In particular implementations, the specific types of components in the piston assembly may be determined based on specific application scenarios and requirements. For example, the fixed part of the drive mechanism may comprise a housing and the movable part of the drive mechanism may comprise a piston rod; the balancing mechanism may comprise a piston block; the transfer mechanism may comprise a spindle of a machine tool; the elastic member may include a spring or the like. This is not limited by the present description.
It will be appreciated that the piston device provided in the embodiments of the present description may be adapted and/or modified according to specific application scenarios and requirements. For example, varying the number of components in the piston device; as another example, the dimensions of some components in the piston device are adjusted; also for example, some components of the piston device may be equally replaced, etc. Based on this, more embodiments of the piston device can be extended, and the examples in this specification do not limit these extension schemes.
It is to be understood that in the description of the present specification, unless explicitly specified or limited otherwise, terms used in the present specification may be understood according to different application scenarios. For example, the verb "to connect" may be understood as an act of fixedly connecting, removably connecting, integrally connecting, etc. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Also, in the description herein, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature may be "on" or "over" the second feature, including the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is higher in height than the second feature. A first feature "under" a second feature may include a first feature that is directly under and obliquely below the second feature, or that simply means that the first feature is shorter in height than the second feature.
Furthermore, the terms "first", "second" and "first" 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. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
Although the embodiments of the present specification are disclosed above, the embodiments of the present specification are not limited thereto. Various changes and modifications may be effected by one skilled in the art without departing from the spirit and scope of the embodiments herein described, and it is intended that the scope of the embodiments herein described be limited only by the scope of the appended claims.
Claims (13)
1. A piston device, comprising: actuating mechanism, balanced mechanism and transmission mechanism, wherein:
the driving mechanism is suitable for driving the balancing mechanism to move;
the balance mechanism is positioned between the driving mechanism and the transmission mechanism, so that the transmission mechanism is not in direct contact with the driving mechanism and is suitable for moving relative to the driving mechanism;
the transmission mechanism is linked with the balance mechanism and is suitable for transmitting energy.
2. The piston assembly of claim 1 wherein said transfer mechanism is further coupled to a rotation mechanism adapted to rotate relative to said counterbalance mechanism upon actuation of said rotation mechanism and transfer energy from said rotation mechanism.
3. A piston arrangement according to claim 1 or 2, wherein the drive means and the balance means are in slotted engagement by means of complementarily shaped portions.
4. The piston arrangement of claim 3, wherein said drive mechanism comprises: a first female engagement portion; the balance mechanism includes: a first male engagement portion; the first concave joint part is suitable for accommodating the first convex joint part.
5. A piston arrangement according to claim 3, wherein said transmission means and said balancing means are connected by complementary shaped portions.
6. The piston arrangement of claim 5, wherein said transfer mechanism comprises: and the second male type joint part is suitable for being jointed with the balance mechanism.
7. The piston arrangement of claim 6, wherein said balancing mechanism comprises: a first balance member and a second balance member; the first balance member and the second balance member are respectively located on both sides of the second male engagement portion.
8. The piston device according to claim 1 or 2, wherein said drive mechanism comprises: a control part, a fixed part and a movable part; wherein:
the control part is suitable for controlling the movable part to move relative to the fixed part;
the movable part is suitable for being connected with the balance mechanism.
9. The piston arrangement of claim 8 wherein a chamber is formed between said fixed member and said movable member; the control part is suitable for controlling the pressure of the chamber so as to enable the movable part to move relative to the fixed part.
10. The piston arrangement of claim 8, wherein said stationary member comprises: and the limiting part is complementary with the opposite part of the movable part in shape and is suitable for limiting the moving range of the movable part.
11. The piston device according to claim 1 or 2, further comprising: and the elastic component is arranged between the driving mechanism and the balance mechanism.
12. A piston arrangement according to claim 1 or 2, wherein a diaphragm is provided between the balancing means and the transfer means.
13. The piston device as claimed in claim 1 or 2, wherein the balance mechanism is sleeved outside the transmission mechanism, and the driving mechanism is sleeved outside the balance mechanism.
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CN202111422551.3A CN114151406A (en) | 2021-11-26 | 2021-11-26 | Piston device |
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