CN113294483A - Rubber pile built-in longitudinal hydraulic vibration damping device and built-in longitudinal hydraulic vibration damping method - Google Patents
Rubber pile built-in longitudinal hydraulic vibration damping device and built-in longitudinal hydraulic vibration damping method Download PDFInfo
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- CN113294483A CN113294483A CN202110583054.5A CN202110583054A CN113294483A CN 113294483 A CN113294483 A CN 113294483A CN 202110583054 A CN202110583054 A CN 202110583054A CN 113294483 A CN113294483 A CN 113294483A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
Abstract
The invention discloses a built-in longitudinal hydraulic vibration damper of a rubber pile, which belongs to the technical field of train vibration damping and comprises the rubber pile, a top plate and a bottom plate, wherein the top plate and the bottom plate are respectively arranged on the top end surface and the bottom end surface of the rubber pile; the rubber pile is characterized by also comprising a hydraulic damping mechanism arranged in the top plate, a movable cavity arranged in the rubber pile, and a force arm mechanism which is connected with the bottom plate and the damping mechanism through the movable cavity; the damping mechanism comprises a piston, a flexible front liquid cavity and a flexible rear liquid cavity which are filled with damping liquid, the piston is positioned between the front liquid cavity and the rear liquid cavity, and a damping hole which is communicated with the front liquid cavity and the rear liquid cavity is formed in the piston; when the running speed of the train changes, the bottom plate drives the power arm mechanism to push the piston to enable the volumes of the front liquid cavity and the rear liquid cavity to generate changes with opposite sizes, damping liquid is forced to flow in the damping holes, the rubber pile longitudinal damping characteristic is directly given, and the problems that the traditional rubber pile is too large in elastic rigidity, weak in restoring force, poor in damping effect and not beneficial to stable running of the train are solved.
Description
Technical Field
The invention relates to a damping rubber pile in secondary suspension of a locomotive bogie of a freight train, in particular to a rubber pile built-in longitudinal hydraulic damping device and a built-in longitudinal hydraulic damping method, and belongs to the technical field of train damping.
Background
The existing secondary suspension of the passenger train uses an air spring as a damping part, and a locomotive of the freight train still uses a rubber pile with strong bearing capacity as the damping part of the secondary suspension at present due to large weight of the locomotive. Like the air springs in the secondary suspension of a passenger train, the rubber piles of the freight train locomotive bear not only the variable vertical force due to the rough road but also the variable longitudinal force when the train running speed changes (accelerates and decelerates) during the running process of the freight train. We refer to both longitudinal and transverse forces acting on the rubber mass as forces in the horizontal direction.
Because the traditional rubber pile has high elastic rigidity and weak restoring force attenuation, the traditional rubber pile has poor vibration reduction effect and is not beneficial to the stable running of a train, the movable part and the contact part frequently suffer from overload impact when the train runs, and the abrasion of the related parts (mainly between wheel rails) is aggravated. In order to solve the problem, the traditional two-system vibration damper has to be specially provided with a longitudinal vibration damper for longitudinal vibration damping except for a rubber pile, so that the purposes of energy absorption and vibration damping are achieved. This not only increases the component arrangement of the bogie, but also is generally regarded in the industry as less than ideal in damping effect. However, for the rubber piles under heavy load, an effective technical solution has not been formed in the industry for endowing the rubber piles with ideal damping and vibration attenuation characteristics.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the problem that a longitudinal shock absorber is specially arranged on a bogie because the traditional rubber pile has overlarge elastic rigidity, weak restoring force and poor shock absorption effect and is not beneficial to the stable running of a train.
Aiming at the problems, the technical scheme provided by the invention is as follows:
a longitudinal hydraulic vibration damper arranged in a rubber pile comprises a hydraulic damping mechanism arranged in a top plate of the rubber pile, a movable cavity arranged in the rubber pile, and a force arm mechanism which is connected with a bottom plate of the rubber pile and the damping mechanism through the movable cavity; the damping mechanism comprises a piston, a flexible front liquid cavity and a flexible rear liquid cavity which are filled with damping liquid, the piston is positioned between the front liquid cavity and the rear liquid cavity, and a damping hole which is communicated with the front liquid cavity and the rear liquid cavity is formed in the piston; when the running speed of the train changes, the bottom plate drives the power arm mechanism to push the piston to enable the volumes of the front liquid cavity and the rear liquid cavity to change in opposite sizes, so that damping liquid is forced to flow in the damping holes, and energy absorption and vibration reduction are realized.
Furthermore, a damping cavity with a rectangular cross section is arranged in the top plate, a hydraulic damping mechanism comprising a front liquid cavity, a rear liquid cavity and a piston is arranged in the damping cavity, and the front liquid cavity and the rear liquid cavity are respectively positioned at the front end and the rear end of the damping cavity; the lower bottom surface of the top plate is provided with a rectangular opening of the damping cavity.
Further, the damping mechanism further comprises a front liquid cavity bag and a rear liquid cavity bag; the front liquid cavity bag backward end and the back liquid cavity bag forward end are respectively provided with a first opening and a second opening, the periphery of the front liquid cavity bag positioned at the first opening is a bonding edge surface I, and the periphery of the back liquid cavity bag positioned at the second opening is provided with a bonding edge surface II; the front liquid cavity bag is bonded with the front end face of the piston through a bonding edge face I, and the front liquid cavity bag and the front end face of the piston form the front liquid cavity; the rear liquid cavity bag is bonded with the rear end face of the piston through a bonding edge face II, and the rear liquid cavity bag and the rear end face of the piston form a rear liquid cavity; the forward end of the front liquid cavity bag is bonded with the inner wall of the front end of the damping cavity, and the backward end of the rear liquid cavity bag is bonded with the inner wall of the rear end of the damping cavity.
Furthermore, the force arm mechanism comprises an arm sleeve, a vertical sliding block and a force arm; the arm sleeve is provided with a sleeve hole with an opening at the upper end part and a rectangular horizontal section, the lower end of the arm sleeve is vertically fixed with the bottom plate in a movable cavity of the rubber pile, the vertical sliding block is positioned in the sleeve hole of the arm sleeve and can slide up and down in the sleeve hole, the lower end of the force arm is inserted into the sleeve hole and is installed on the vertical sliding block in the sleeve hole, and the upper end of the force arm is vertically and fixedly connected with the piston through the rectangular opening at the lower bottom surface of the top plate.
Furthermore, a transverse sliding groove is formed in the top end of the vertical sliding block, a transverse sliding block capable of sliding transversely is arranged in the transverse sliding groove, and the lower end of the force arm is fixedly connected with the transverse sliding block.
Furthermore, a horizontal circumferential sliding ball frame is arranged on the inner wall of the upper part of the sleeve hole of the arm sleeve, a plurality of rotatable sliding balls exposed out of partial spherical surfaces are arranged on the sliding ball frame, and the sliding balls are connected with a force arm inserted into the sleeve hole.
Furthermore, the piston is provided with a liquid injection hole communicated with any damping hole and an exhaust hole communicated with the other damping hole, and the liquid injection hole and the exhaust hole are respectively provided with a hole plug used for plugging the liquid injection hole and the exhaust hole.
Furthermore, two ports of the damping hole communicated with the exhaust hole, which are positioned in the front liquid cavity and the rear liquid cavity, are respectively connected with a first delay pipe and a second delay pipe which extend to the top of the front liquid cavity and the top of the rear liquid cavity, and ports at the upper ends of the first delay pipe and the second delay pipe are respectively positioned at the top of the front liquid cavity and the top of the rear liquid cavity.
A rubber pile built-in longitudinal hydraulic vibration damping method comprises the following steps: the method is characterized in that the thickness of a top plate at the upper end of a rubber pile is increased, a longitudinal hydraulic damping mechanism is arranged in the top plate, a piston connected with the damping mechanism and a force arm mechanism of a bottom plate at the lower end of the rubber pile are arranged in the rubber pile, and the piston is pushed by the bottom plate through the force arm mechanism by utilizing the characteristic that the top plate at the upper end of the rubber pile and the bottom plate at the lower end of the rubber pile are staggered back and forth when the running speed of a train changes, so that a hydraulic damping part of the hydraulic damping mechanism is forced to perform damping energy absorption, and the rubber pile is endowed with the longitudinal damping vibration attenuation characteristic.
The longitudinal hydraulic damping mechanism is arranged in the top plate, a damping cavity is arranged in the top plate, a front liquid cavity and a rear liquid cavity are respectively arranged at the front end and the rear end of the damping cavity, a piston is arranged between the front liquid cavity and the rear liquid cavity, and a damping hole communicated with the front liquid cavity and the rear liquid cavity is arranged in the piston; the rubber pile is internally provided with a piston for connecting the damping mechanism and a force arm mechanism of a bottom plate at the lower end of the rubber pile, a movable cavity communicated with the damping cavity in the bottom plate and the top plate is arranged in the rubber pile, a force arm capable of vertically stretching and transversely sliding is arranged in the movable cavity, the upper end of the force arm is vertically fixed with the piston, and the lower end of the force arm is vertically arranged on the bottom plate through a transverse sliding assembly and a vertical telescopic assembly.
Has the advantages that: the longitudinal hydraulic vibration damping device is arranged in the rubber pile (comprising the top plate and the bottom plate), so that the longitudinal damping characteristic is directly endowed to the rubber pile, and the problems that the traditional rubber pile (2) is poor in vibration damping effect and not beneficial to the stable operation of a train due to the fact that the elastic rigidity is too large, the restoring force attenuation is weakened; a longitudinal vibration reduction mechanism is not required to be specially arranged in the limited installation space of the bogie, so that the bogie is more concise to arrange; there is very big optimization space, and after optimizing, the damping effect that sets up the rubber heap that has built-in vertical hydraulic damping device on the bogie will be better than the damping effect that current bogie set up the rubber heap and add external vertical shock absorber.
Drawings
FIG. 1 is a schematic longitudinal cross-sectional view of the rubber stack with a built-in longitudinal hydraulic damping device;
FIG. 2 is a schematic longitudinal cross-sectional view of the top plate;
FIG. 3 is a longitudinal sectional view of the rubber pile built-in longitudinal hydraulic vibration damper, showing that damping fluid is directly poured into the two ends of the damping cavity, the middle of the damping cavity is sealed by a piston, and the front fluid cavity and the rear fluid cavity are formed without flexible outer bags;
FIG. 4 is a schematic perspective view of the assembly of a damping mechanism and a moment arm mechanism in the rubber pile built-in longitudinal hydraulic vibration damping device;
FIG. 5 is an exploded perspective view of a damping mechanism and a moment arm mechanism in the rubber pile built-in longitudinal hydraulic vibration damping device;
FIG. 6 is a schematic perspective view of a damping mechanism in the rubber pile built-in longitudinal hydraulic vibration damping device;
FIG. 7 is a schematic perspective view of the structural relationship of the middle vertical slider, the lateral slider and the force arm;
fig. 8 is a perspective view of the arm sleeve.
In the figure: 1. a base plate; 2. rubber piles; 21. a movable cavity; 3. a top plate; 31. a damping cavity; 32. a rectangular opening; 4. an anterior fluid chamber; 41. a first opening; 42. bonding the first side surface; 43. a front fluid chamber; 5. a posterior fluid chamber sac; 51. a second opening; 52. bonding the second side surface; 53. a rear fluid chamber; 6. a piston; 61. a damping hole; 62. a front end face; 63. a rear end face; 7. an arm sleeve; 71. sleeving the pipe hole; 8. a sliding ball frame; 81. a sliding bead; 9. a vertical slide block; 91. a transverse chute; 10. transversely moving the sliding block; 11. a force arm; 12. a liquid injection hole; 13. an exhaust hole; 14. a hole plug; 15. a first prolonging pipe; 16. and a second extending pipe.
Detailed Description
The invention is further described with reference to the following examples and figures:
as shown in fig. 1, a rubber pile 2 according to the present invention has a top plate 3 provided on the top end surface and a bottom plate 1 provided on the bottom end surface.
As shown in fig. 1, 2 and 5, a longitudinal hydraulic vibration damper built in a rubber pile comprises a hydraulic damping mechanism arranged in a top plate 3, a movable cavity 21 arranged in the rubber pile 2, and a force arm mechanism connecting a bottom plate 1 and the damping mechanism through the movable cavity 21; the damping mechanism comprises a piston 6, a flexible front liquid cavity 43 and a flexible rear liquid cavity 53, wherein damping liquid is filled in the front liquid cavity 43 and the rear liquid cavity 53, the piston 6 is positioned between the front liquid cavity 43 and the rear liquid cavity 53, and a damping hole 61 for communicating the front liquid cavity 43 and the rear liquid cavity 53 is formed in the piston 6. The working principle of the arrangement is that the rubber pile 2 is arranged on the bogie through the bottom plate 1 arranged at the bottom of the rubber pile 2, and the body of the locomotive is pressed on the top plate 3 at the upper end of the rubber pile 2. When the running speed of the train changes, the direction of longitudinal force (forward driving force or backward braking resistance force in the running direction) applied to the bottom plate 1 of the rubber pile by the bogie is inconsistent with the direction of inertia force acted on the top plate 3 of the rubber pile by the train body, so that front-back dislocation occurs between the top plate 3 and the bottom plate 1, namely, the bottom plate 1 generates relative displacement relative to the top plate 3. By utilizing the characteristic, the bottom plate 1 pushes the piston 6 to compress the front liquid cavity 43 and simultaneously stretch the rear liquid cavity 53 or compress the rear liquid cavity 53 and simultaneously stretch the front liquid cavity 43, so that damping liquid is forced to flow in the damping hole 61, the rubber pile 2 has universal elasticity and longitudinal damping characteristic, and energy absorption and vibration reduction are realized. Therefore, the problems that the traditional rubber pile 2 is poor in damping effect and not beneficial to stable running of a train due to overlarge elastic rigidity, weakened restoring force and poor in damping effect and a longitudinal damper needs to be specially arranged on a bogie are solved.
The hydraulic damping mechanism is arranged in the top plate 3, the damping cavity 31 with the rectangular longitudinal section and the rectangular cross section is arranged in the top plate 3, the hydraulic damping mechanism comprising the front liquid cavity 43, the rear liquid cavity 53 and the piston 6 is arranged in the damping cavity 31, and the front liquid cavity 43 and the rear liquid cavity 53 are respectively positioned at the front end and the rear end in the damping cavity 31.
The piston 6 is cuboid to fit the cavity shape of the damping cavity 31 with a rectangular cross section.
A rectangular opening 32 of the damping cavity 31 is provided in the lower bottom surface of the top plate 3 for passage of a moment arm part in a moment arm mechanism, as will be explained in further detail below.
As shown in fig. 1, 4, 5 and 6, the damping mechanism preferably further comprises a front liquid chamber capsule 4 and a rear liquid chamber capsule 5; the backward end of the front liquid cavity bag 4 and the forward end of the rear liquid cavity bag 5 are respectively provided with a first opening 41 and a second opening 51, the periphery of the front liquid cavity bag 4, which is positioned at the first opening 41, is provided with a first bonding edge surface 42, and the periphery of the rear liquid cavity bag 5, which is positioned at the second opening 51, is provided with a second bonding edge surface 52; the front liquid cavity bag 4 is bonded with the front end surface 62 of the piston 6 through a first bonding edge surface 42 by vulcanization, and the front liquid cavity 43 is formed by the front liquid cavity bag 4 and the front end surface 62 of the piston 6; the rear liquid cavity bag 5 is bonded with the rear end surface 63 of the piston 6 through the second bonding edge surface 52 by vulcanization, and the rear liquid cavity 53 is formed by the rear liquid cavity bag 5 and the rear end surface 63 of the piston 6. Thus, the front liquid chamber bag 4 and the rear liquid chamber bag 5 are provided at both ends of the piston 6 by vulcanization bonding, so that the front liquid chamber 43 and the rear liquid chamber 53 are sealed extremely reliably.
The forward end of the front liquid cavity bag 4 is bonded with the front end inner wall of the damping cavity 31, and the backward end of the rear liquid cavity bag 5 is bonded with the rear end inner wall of the damping cavity 31, so that the piston 6 can respectively stretch the front liquid cavity bag 4 and the rear liquid cavity bag 5.
As an alternative, as shown in fig. 3, the damping fluid can be poured directly into the damping cavity 31 at both ends and the middle is closed by the piston 6, which is a very simple structure but has high requirements on material and machining accuracy.
As shown in fig. 1, 4, 5, 7 and 8, the moment arm mechanism comprises an arm sleeve 7, a vertical sliding block 9 and a moment arm 11; the arm sleeve 7 is provided with a sleeve hole 71 with an opening at the upper end part and a rectangular horizontal section, the lower end of the sleeve hole is vertically fixed with the bottom plate 1 at the lower end of the rubber stack movable cavity 21, the vertical sliding block 9 is positioned in the sleeve hole 71 of the arm sleeve 7 and can slide up and down in the sleeve hole 71, the lower end of the force arm 11 is inserted into the sleeve hole 71 and is installed on the vertical sliding block 9 in the sleeve hole 71, and the upper end of the force arm is vertically and fixedly connected with the piston 6 through the rectangular opening 32 at the lower bottom surface of the top plate 3. The arrangement is to cope with the vertical vibration in the running process of the train. When the rubber pile vibrates vertically, the distance between the top plate 3 and the bottom plate 1 of the rubber pile 2 changes, and the vertical sliding block 9 connected with the force arm 11 slides up and down in the sleeve hole 71.
The top end of the vertical sliding block 9 is provided with a transverse sliding groove 91, a transverse sliding block 10 capable of sliding transversely is arranged in the transverse sliding groove 91, and the lower end of the force arm 11 is fixedly connected with the transverse sliding block 10. The arrangement is to deal with the transverse vibration during the running process of the train, and most importantly, the transverse swing exists when the train passes through a curve. When the transverse swing is carried out, the transverse sliding block 10 connected with the force arm 11 needs to transversely slide in the transverse sliding groove 91.
The front wall and the rear wall of the upper part in the sleeve hole 71 of the arm sleeve 7 are provided with sliding ball racks 8 which are horizontally arranged, the sliding ball racks 8 are provided with a plurality of rotatable sliding balls 81 which expose partial spherical surfaces, and the sliding balls 81 are in contact with the force arm 11 inserted into the sleeve hole 71. The sliding ball 81 on the sliding ball frame 8 is used for limiting the force arm 11 forwards and backwards, and more importantly, the sliding ball is beneficial to the transverse and vertical sliding of the force arm 11 in the sleeve hole 71.
The piston 6 is provided with a liquid injection hole 12 communicated with any one damping hole 61 and an exhaust hole 13 communicated with the other damping hole 61, and the liquid injection hole 12 and the exhaust hole 13 are respectively provided with a hole plug 14 for plugging the liquid injection hole 12 and the exhaust hole 13. The liquid injection hole 12 can simultaneously inject liquid into the front liquid cavity 43 and the rear liquid cavity 53 through the damping hole 61; during liquid injection, the exhaust hole 13 can simultaneously exhaust gas to the front liquid cavity 43 and the rear liquid cavity 53 through the damping hole 61, so that smooth liquid injection to the front liquid cavity 43 and the rear liquid cavity 53 is facilitated.
As shown in fig. 6, two ports of the damping hole 61 communicating with the exhaust hole 13, which are located in the front liquid chamber 43 and the rear liquid chamber 53, are connected to a first delay pipe 15 and a second delay pipe 16 extending to the top of the front liquid chamber 43 and the top of the rear liquid chamber 53, respectively, and ports at the upper ends of the first delay pipe 15 and the second delay pipe 16 are located at the top of the front liquid chamber 43 and the top of the rear liquid chamber 53, respectively. This facilitates adequate venting of the front and rear fluid chambers 43, 53. During liquid injection, when damping liquid flows out of the exhaust hole 13, as long as the top plate 3 is in a horizontal state at the time, the front liquid chamber 43 and the rear liquid chamber 53 are proved to be filled with the damping liquid.
As shown in fig. 1-8, a method for longitudinal hydraulic damping of rubber pile inside includes: the damping device is characterized in that the thickness of a top plate 3 at the upper end of a rubber pile 2 is increased, a longitudinal hydraulic damping mechanism is arranged in the top plate 3, a piston 6 connected with the damping mechanism and a force arm mechanism of a bottom plate 1 at the lower end of the rubber pile 2 are arranged in the rubber pile 2, the piston 6 is pushed by the bottom plate 1 through the force arm mechanism by utilizing the characteristic that the top plate 3 at the upper end of the rubber pile 2 and the bottom plate 1 at the lower end of the rubber pile 2 are staggered front and back when the running speed of a train changes, a hydraulic damping part of the hydraulic damping mechanism is forced to perform damping energy absorption, and therefore the rubber pile 2 is endowed with the longitudinal damping vibration attenuation characteristic.
The longitudinal hydraulic damping mechanism is arranged in the top plate 3, the damping cavity 31 is arranged in the top plate 3, the front end and the rear end of the damping cavity 31 are respectively provided with the front liquid cavity 43 and the rear liquid cavity 53, the piston 6 is arranged between the front liquid cavity 43 and the rear liquid cavity 53, and the piston 6 is internally provided with a damping hole 61 communicated with the front liquid cavity 43 and the rear liquid cavity 53; the damping device is characterized in that a piston 6 connected with a damping mechanism and a force arm mechanism of a bottom plate 1 at the lower end of a rubber pile 2 are arranged in the rubber pile 2, a movable cavity 21 communicated with a damping cavity 31 in the bottom plate 1 and a top plate 3 is arranged in the rubber pile 2, a force arm 11 capable of vertically stretching and transversely sliding is arranged in the movable cavity 21, the upper end of the force arm 11 is vertically fixed with the piston 6, and the lower end of the force arm 11 is vertically arranged on the bottom plate 1 through a transverse sliding assembly and a vertical telescopic assembly.
When the damping device is applied, the bottom plate 1 pushes the piston 6 to compress the front liquid cavity 43 and simultaneously stretch the rear liquid cavity 53 or compress the rear liquid cavity 53 and simultaneously stretch the front liquid cavity 43, so that damping liquid is forced to flow in the damping hole 61, the rubber pile 2 has universal elasticity and longitudinal damping property, and energy absorption and vibration reduction are realized.
The foregoing is given by way of illustration only and is not to be construed as limiting the scope of the invention, which is intended to be covered thereby, and any equivalent modifications are intended to fall within the scope of the invention.
Claims (10)
1. The utility model provides a built-in vertical hydraulic damping device of rubber heap which characterized in that: the damping device comprises a hydraulic damping mechanism arranged in a top plate (3) of a rubber pile (2), a movable cavity (21) arranged in the rubber pile (2), and a force arm mechanism which is connected with a bottom plate (1) of the rubber pile (2) and the damping mechanism through the movable cavity (21); the damping mechanism comprises a piston (6), a flexible front liquid cavity (43) and a flexible rear liquid cavity (53) which are filled with damping liquid, the piston (6) is positioned between the front liquid cavity (43) and the rear liquid cavity (53), and the piston (6) is provided with a damping hole (61) which is communicated with the front liquid cavity (43) and the rear liquid cavity (53); when the running speed of the train changes, the bottom plate (1) drives the power arm mechanism to push the piston (6) to enable the volumes of the front liquid cavity (43) and the rear liquid cavity (53) to change in opposite sizes, so that damping liquid is forced to flow in the damping hole (61), and energy absorption and vibration reduction are realized.
2. The rubber-pile built-in longitudinal hydraulic damping device according to claim 1, characterized in that: a damping cavity (31) with a rectangular cross section is arranged in the top plate (3), a hydraulic damping mechanism comprising a front liquid cavity (43), a rear liquid cavity (53) and a piston (6) is arranged in the damping cavity (31), and the front liquid cavity (43) and the rear liquid cavity (53) are respectively positioned at the front end and the rear end of the damping cavity (31); a rectangular opening (32) of the damping cavity (31) is arranged on the lower bottom surface of the top plate (3).
3. The rubber-pile built-in longitudinal hydraulic damping device according to claim 2, characterized in that: the damping mechanism further comprises a front liquid cavity bag (4) and a rear liquid cavity bag (5); the rear end of the front liquid cavity bag (4) and the front end of the rear liquid cavity bag (5) are respectively provided with a first opening (41) and a second opening (51), the periphery of the front liquid cavity bag (4) positioned at the first opening (41) is a first bonding edge surface (42), and the periphery of the rear liquid cavity bag (5) positioned at the second opening (51) is provided with a second bonding edge surface (52); the front liquid cavity bag (4) is bonded with the front end surface (62) of the piston (6) through a bonding side surface I (42), and the front liquid cavity (43) is formed by the front liquid cavity bag (4) and the front end surface (62) of the piston (6); the rear liquid cavity bag (5) is bonded with the rear end surface (63) of the piston (6) through a second bonding side surface (52), and the rear liquid cavity (53) is formed by the rear liquid cavity bag (5) and the rear end surface (63) of the piston (6); the forward end of the front liquid cavity bag (4) is bonded with the inner wall of the front end of the damping cavity (31), and the backward end of the rear liquid cavity bag (5) is bonded with the inner wall of the rear end of the damping cavity (31).
4. The rubber-pile built-in longitudinal hydraulic damping device according to claim 2, characterized in that: the force arm mechanism comprises an arm sleeve (7), a vertical sliding block (9) and a force arm (11); the arm sleeve (7) is provided with a sleeve hole (71) with an opening at the upper end part and a rectangular horizontal section, the lower end of the arm sleeve is vertically fixed with the bottom plate (1) in the movable cavity (21) of the rubber pile (2), the vertical sliding block (9) is positioned in the sleeve hole (71) of the arm sleeve (7) and can slide up and down in the sleeve hole (71), the lower end of the force arm (11) is inserted into the sleeve hole (71) and is installed on the vertical sliding block (9) in the sleeve hole (71), and the upper end of the force arm is vertically and fixedly connected with the piston (6) through a rectangular opening (32) at the lower bottom surface of the top plate (3).
5. The rubber-pile built-in longitudinal hydraulic damping device according to claim 4, characterized in that: the top of the vertical sliding block (9) is provided with a transverse sliding groove (91), a transverse sliding block (10) capable of transversely sliding is arranged in the transverse sliding groove (91), and the lower end of the force arm (11) is fixedly connected with the transverse sliding block (10).
6. The rubber-pile built-in longitudinal hydraulic damping device according to claim 5, characterized in that: the inner wall of the upper part of the sleeve hole (71) of the arm sleeve (7) is provided with a horizontal circumferential sliding ball frame (8), the sliding ball frame (8) is provided with a plurality of sliding balls (81) which are exposed out of partial spherical surfaces and can rotate, and the sliding balls (81) are connected with a force arm (11) inserted into the sleeve hole (71).
7. The rubber-pile built-in longitudinal hydraulic vibration damper according to any one of claims 1 to 6, characterized in that: and a liquid injection hole (12) communicated with any damping hole (61) and an exhaust hole (13) communicated with another damping hole (61) are formed in the piston (6), and both the liquid injection hole (12) and the exhaust hole (13) are provided with hole plugs (14) for plugging the liquid injection hole (12) and the exhaust hole (13).
8. The rubber-pile built-in longitudinal hydraulic damping device according to claim 7, characterized in that: two ports of a damping hole (61) communicated with the exhaust hole (13) and positioned in the front liquid cavity (43) and the rear liquid cavity (53) are respectively connected with a first delay pipe (15) and a second delay pipe (16) which extend to the top of the front liquid cavity (43) and the top of the rear liquid cavity (53), and ports at the upper ends of the first delay pipe (15) and the second delay pipe (16) are respectively positioned at the top of the front liquid cavity (43) and the top of the rear liquid cavity (53).
9. A rubber pile built-in longitudinal hydraulic vibration damping method comprises the following steps: the damping device is characterized in that the thickness of a top plate (3) at the upper end of a rubber pile (2) is increased, a longitudinal hydraulic damping mechanism is arranged in the top plate (3), a piston (6) connected with the damping mechanism and a force arm mechanism of a bottom plate (1) at the lower end of the rubber pile (2) are arranged in the rubber pile (2), and the characteristic that the top plate (3) at the upper end of the rubber pile (2) and the bottom plate (1) at the lower end of the rubber pile (2) are staggered front and back when the running speed of a train changes is utilized, the piston (6) is pushed by the bottom plate (1) through the force arm mechanism, so that a hydraulic damping part of the hydraulic damping mechanism is forced to perform damping energy absorption, and the rubber pile (2) is endowed with the longitudinal damping vibration attenuation characteristic.
10. The rubber-pile built-in longitudinal hydraulic vibration damping method according to claim 9: the hydraulic damping device is characterized in that a longitudinal hydraulic damping mechanism is arranged in the top plate (3), a damping cavity (31) is arranged in the top plate (3), a front liquid cavity (43) and a rear liquid cavity (53) are respectively arranged at the front end and the rear end of the damping cavity (31), a piston (6) is arranged between the front liquid cavity (43) and the rear liquid cavity (53), and a damping hole (61) communicated with the front liquid cavity (43) and the rear liquid cavity (53) is arranged in the piston (6); set up piston (6) and the arm of force mechanism of rubber heap (2) lower extreme bottom plate (1) of connecting damping mechanism in rubber heap (2), set up movable cavity (21) that intercommunication bottom plate (1) and roof (3) well damping cavity (31) in rubber heap (2), set up arm of force (11) that can vertically stretch out and draw back and transversely slide in movable cavity (21), with the upper end and piston (6) vertical fixation of arm of force (11), install the lower extreme of arm of force (11) on bottom plate (1) through transversely sliding subassembly and vertical flexible subassembly vertically.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110583054.5A CN113294483B (en) | 2021-05-27 | 2021-05-27 | Rubber pile built-in longitudinal hydraulic vibration damping device and built-in longitudinal hydraulic vibration damping method |
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| CN202110583054.5A CN113294483B (en) | 2021-05-27 | 2021-05-27 | Rubber pile built-in longitudinal hydraulic vibration damping device and built-in longitudinal hydraulic vibration damping method |
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| CN113294483A true CN113294483A (en) | 2021-08-24 |
| CN113294483B CN113294483B (en) | 2022-09-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07285435A (en) * | 1995-04-28 | 1995-10-31 | Tokai Rubber Ind Ltd | Air spring of swing pillow device for rolling stock |
| CN201738195U (en) * | 2010-05-17 | 2011-02-09 | 上海轨通减振技术有限公司 | Composite damper spring vibration isolator for floating slab tracks in rail transit |
| CN205022597U (en) * | 2015-10-15 | 2016-02-10 | 南车青岛四方机车车辆股份有限公司 | Draw gear is piled to nonlinearity rubber |
| CN108662070A (en) * | 2017-03-27 | 2018-10-16 | 青岛海尔滚筒洗衣机有限公司 | Shock mitigation system and washing machine including the shock mitigation system |
| CN110608260A (en) * | 2019-10-16 | 2019-12-24 | 上海工程技术大学 | Mass-adjustable vibration absorber for urban rail vehicle and vibration reduction principle |
-
2021
- 2021-05-27 CN CN202110583054.5A patent/CN113294483B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07285435A (en) * | 1995-04-28 | 1995-10-31 | Tokai Rubber Ind Ltd | Air spring of swing pillow device for rolling stock |
| CN201738195U (en) * | 2010-05-17 | 2011-02-09 | 上海轨通减振技术有限公司 | Composite damper spring vibration isolator for floating slab tracks in rail transit |
| CN205022597U (en) * | 2015-10-15 | 2016-02-10 | 南车青岛四方机车车辆股份有限公司 | Draw gear is piled to nonlinearity rubber |
| CN108662070A (en) * | 2017-03-27 | 2018-10-16 | 青岛海尔滚筒洗衣机有限公司 | Shock mitigation system and washing machine including the shock mitigation system |
| CN110608260A (en) * | 2019-10-16 | 2019-12-24 | 上海工程技术大学 | Mass-adjustable vibration absorber for urban rail vehicle and vibration reduction principle |
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| CN113294483B (en) | 2022-09-27 |
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