CN218000042U - Hydraulic cylinder, hydraulic device and rail vehicle - Google Patents
Hydraulic cylinder, hydraulic device and rail vehicle Download PDFInfo
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- CN218000042U CN218000042U CN202222257274.1U CN202222257274U CN218000042U CN 218000042 U CN218000042 U CN 218000042U CN 202222257274 U CN202222257274 U CN 202222257274U CN 218000042 U CN218000042 U CN 218000042U
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Abstract
The utility model discloses a pneumatic cylinder, hydraulic means and rail vehicle. The hydraulic cylinder comprises a cylinder body assembly, a piston and a piston rod; a hydraulic cavity and an avoiding cavity are arranged in the cylinder body assembly; the piston is slidably arranged in the hydraulic cavity; the piston rod is fixedly connected with the piston and penetrates through the first hydraulic cavity and the second hydraulic cavity, one end of the piston rod extends into the avoiding cavity, and the other end of the piston rod extends out of the cylinder body assembly; the cylinder body assembly is provided with a first oil inlet and outlet and a second oil inlet and outlet, the first oil inlet and outlet is located on one side of the piston along the length direction of the cylinder body assembly, the second oil inlet and outlet is located on the other side of the piston, the first oil inlet and outlet is communicated with the first hydraulic cavity, and the second oil inlet and outlet is communicated with the second hydraulic cavity. From this, the piston rod is connected to the piston, and the both ends of piston rod are connected to the cylinder body, and the cylinder body subassembly supports the both ends of piston rod, and the piston also supports the piston rod, and like this, at the in-process of pneumatic cylinder work, the atress of piston rod is steady, and the pneumatic cylinder is not fragile.
Description
Technical Field
The utility model relates to a track traffic field particularly relates to pneumatic cylinder, hydraulic means and rail vehicle.
Background
The rail vehicle includes a first vehicle body and a second vehicle body. The first vehicle body and the second vehicle body are adjacent. The first body is connected to the second body such that the first body and the second body move together. During travel of the rail vehicle in the extending direction of the rail beam, both the first vehicle body and the second vehicle body may rotate about an axis parallel to the traveling direction of the rail vehicle to roll.
SUMMERY OF THE UTILITY MODEL
A series of concepts in a simplified form are introduced in the summary section, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.
For at least partly solving above-mentioned technical problem, the utility model provides a pneumatic cylinder, include:
the cylinder body assembly is internally provided with a hydraulic cavity and an avoiding cavity;
the piston is slidably arranged in the hydraulic cavity and divides the hydraulic cavity into a first hydraulic cavity and a second hydraulic cavity, and the first hydraulic cavity, the second hydraulic cavity and the avoidance cavity are sequentially arranged along the length direction of the cylinder body assembly;
the piston rod is fixedly connected with the piston and penetrates through the first hydraulic cavity and the second hydraulic cavity, one end of the piston rod extends into the avoiding cavity, and the other end of the piston rod extends out of the cylinder body assembly;
the cylinder body assembly is provided with a first oil inlet and outlet and a second oil inlet and outlet, the first oil inlet and outlet is located on one side of the piston along the length direction of the cylinder body assembly, the second oil inlet and outlet is located on the other side of the piston, the first oil inlet and outlet is communicated with the first hydraulic cavity, and the second oil inlet and outlet is communicated with the second hydraulic cavity.
According to the utility model discloses a pneumatic cylinder, piston rod are connected to the piston, and the both ends of piston rod are connected to the cylinder body, and the both ends of cylinder body subassembly support piston rod, piston also support the piston rod, and like this, at the in-process of pneumatic cylinder work, the atress of piston rod is steady, and the pneumatic cylinder is not fragile.
Optionally, the piston rod includes a first rod portion and a second rod portion, the first rod portion and the second rod portion are sequentially arranged along the length direction of the cylinder assembly, opposite ends of the first rod portion and the second rod portion are both connected to the piston, one end of the first rod portion, which is far away from the piston, extends outside the cylinder assembly, and one end of the second rod portion, which is far away from the piston, extends into the avoidance cavity.
Optionally, the cylinder assembly includes a cylinder body, a first end cover, a second end cover and an end protection portion, the first end cover is connected to one end of the cylinder body, the second end cover is connected to the other end of the cylinder body, the end protection portion has an avoidance cavity, the end protection portion is connected to one end of the second end cover, the end of the piston rod is connected to the end of the second end cover, the other end of the piston rod penetrates through the first end cover to extend out of the cylinder assembly, and one end of the piston rod penetrates through the second end cover to extend into the avoidance cavity.
The utility model also provides a hydraulic device which is used for the rail vehicle and comprises the hydraulic cylinder,
the hydraulic cylinder is vertically arranged between a vehicle body and a bogie of the railway vehicle, the extending end of the plug rod extending out of the cylinder body assembly is used for being connected with one of the vehicle body and the bogie, and the end part of the cylinder body assembly, which is far away from the extending end of the extending cylinder body assembly, is used for being connected with the other one of the vehicle body and the bogie;
wherein the hydraulic cylinders comprise a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder and a fourth hydraulic cylinder, the first hydraulic cylinder and the second hydraulic cylinder are used for being connected to a first vehicle body, a first bogie connected with the first vehicle body is arranged at intervals along the width direction of the first vehicle body, the third hydraulic cylinder and the fourth hydraulic cylinder are used for being connected to a second vehicle body adjacent to the first vehicle body, a second bogie connected with the second vehicle body is arranged at intervals along the width direction of the second vehicle body,
the first fluid of first pneumatic cylinder is imported and exported and is linked to the second fluid of second pneumatic cylinder and is imported and exported, the second fluid of first pneumatic cylinder is imported and exported and is linked to the first fluid of second pneumatic cylinder and import and export, the first fluid of third pneumatic cylinder is imported and exported and is linked to the second fluid of fourth pneumatic cylinder and import and export, the second fluid of third pneumatic cylinder is imported and exported and is linked to the first fluid of fourth pneumatic cylinder and import and export, the second fluid of first pneumatic cylinder is imported and exported and is linked to the first fluid of third pneumatic cylinder and import and export, the second fluid of second pneumatic cylinder is imported and exported and is linked to the first fluid of fourth pneumatic cylinder and import and export.
According to the utility model discloses a hydraulic means, hydraulic means include aforementioned pneumatic cylinder, and the piston rod is connected to the piston, and the both ends of piston rod are connected to the cylinder body, and the both ends of cylinder body subassembly support piston rod, piston also support the piston rod, and like this, at the in-process of pneumatic cylinder work, the atress of piston rod is steady, and the pneumatic cylinder is not fragile.
Optionally, the hydraulic device further comprises:
the first energy accumulator is communicated with the second oil inlet and outlet of the first hydraulic cylinder and the first oil inlet and outlet of the third hydraulic cylinder;
and the second energy accumulator is communicated to the second oil inlet/outlet of the second hydraulic cylinder and the first oil inlet/outlet of the fourth hydraulic cylinder.
Optionally, the hydraulic apparatus further includes a first throttle valve and a second throttle valve, the first throttle valve is disposed on a pipeline between the second oil inlet/outlet of the first hydraulic cylinder and the first oil inlet/outlet of the second hydraulic cylinder, and the second throttle valve is disposed on a pipeline between the first oil inlet/outlet of the first hydraulic cylinder and the second oil inlet/outlet of the second hydraulic cylinder.
Optionally, there are at least two first throttles and at least two second throttles.
Optionally, the hydraulic apparatus further includes a third throttle valve and a fourth throttle valve, the third throttle valve is disposed on a pipeline between the second oil inlet/outlet of the third hydraulic cylinder and the first oil inlet/outlet of the fourth hydraulic cylinder, and the fourth throttle valve is disposed on a pipeline between the first oil inlet/outlet of the third hydraulic cylinder and the second oil inlet/outlet of the fourth hydraulic cylinder.
Optionally, there are at least two third throttles and at least two fourth throttles.
The utility model also provides a rail vehicle, rail vehicle includes first automobile body, the second automobile body, first bogie, the second bogie and aforementioned hydraulic means, and first automobile body and the adjacent setting of second automobile body, first automobile body and first bogie link to each other, and the second automobile body links to each other with the second bogie, and first pneumatic cylinder and second pneumatic cylinder setting are between first automobile body and first bogie, and third pneumatic cylinder and fourth pneumatic cylinder setting are between second automobile body and second bogie.
According to the utility model discloses a rail vehicle, rail vehicle include aforementioned hydraulic means, and hydraulic means includes aforementioned pneumatic cylinder, and the piston rod is connected to the piston, and the both ends of piston rod are connected to the cylinder body, and the both ends of cylinder body subassembly support piston rod, piston also support piston rod, and like this, at the in-process of pneumatic cylinder work, the atress of piston rod is steady, and the pneumatic cylinder is not fragile.
Drawings
In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the invention and are not therefore to be considered to be limiting of its scope, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings.
Fig. 1 is a schematic perspective view of a hydraulic device according to a preferred embodiment of the present invention, provided in a portion of a railway vehicle;
FIG. 2 is a perspective view of a hydraulic cylinder of the hydraulic device of FIG. 1; and
fig. 3 is a cross-sectional schematic view of a front view of a hydraulic cylinder of the hydraulic device of fig. 1.
Description of the reference numerals
110: first accumulator 120: second accumulator
130: hydraulic cylinder 131: first oil inlet and outlet
132: a second oil inlet and outlet; 133: first hydraulic cylinder
134: second hydraulic cylinder 135: third hydraulic cylinder
136: fourth hydraulic cylinder 137: cylinder body
138: the piston 139: piston rod
140: first rod portion 141: second rod part
142: first end cap 143: second end cap
144: end protection portion 145: ear ring
146: protruding end 150: steering frame
151: first bogie 152: second bogie
161: first throttle valve 162: second throttle valve
163: third throttle valve 164: fourth throttle valve
170: vehicle body 171: first vehicle body
172: second vehicle body 181: first hydraulic chamber
182: second hydraulic chamber 183: avoiding cavity
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that embodiments of the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring embodiments of the present invention.
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It is to be understood that the terms "upper", "lower", and the like are used herein for purposes of illustration only and are not to be construed as limiting.
Ordinal words such as "first" and "second" are referred to herein merely as labels, and do not have any other meaning, e.g., a particular order, etc.
In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the invention. It is apparent that the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
The utility model provides a pneumatic cylinder 130. The hydraulic cylinder 130 is used for a hydraulic device. The hydraulic device is used for a rail vehicle. Referring to fig. 1 to 3, the railway vehicle includes a vehicle body 170 and a bogie 150 coupled to the vehicle body 170. The hydraulic cylinder 130 is disposed between the vehicle body 170 and the bogie 150. The body 170 includes adjacent first and second bodies 171, 172. The bogie 150 includes a first bogie 151 and a second bogie 152. The first bogie 151 is connected to the first body 171. The second bogie 152 is connected to the second vehicle body 172.
Referring to fig. 2 and 3, the hydraulic cylinder 130 includes a piston rod 139, a cylinder assembly and a piston 138. The cylinder assembly includes a cylinder 137 and an end cap. The cylinder 137 has a sleeve-like structure. The end caps include a first end cap 142 and a second end cap 143. Along the length of the cylinder 137 (i.e., the length of the cylinder assembly), a first end cap 142 is attached to one end of the cylinder 137. The second end cap 143 is connected to the other end of the cylinder 137 to constitute a hydraulic chamber of the cylinder assembly.
The cylinder assembly also includes an avoidance chamber 183 separate from the hydraulic chamber. The escape chamber 183 is located at one side of the hydraulic pressure chamber in the length direction of the cylinder 137. Thus, the first hydraulic pressure chamber 181, the second hydraulic pressure chamber 182, and the avoidance chamber 183 are arranged in sequence along the longitudinal direction of the cylinder 137. That is, the second hydraulic pressure chamber 182 is located between the first hydraulic pressure chamber 181 and the avoidance chamber 183 in the length direction of the cylinder 137.
The cylinder 137 has a first oil inlet/outlet 131 and a second oil inlet/outlet 132. The first oil inlet/outlet 131 and the second oil inlet/outlet 132 are separated. Along the length of the cylinder 137, the first oil inlet/outlet 131 is located on one side of the piston 138, and the second oil inlet/outlet 132 is located on the other side of the piston 138. The first oil inlet/outlet 131 communicates with the first hydraulic chamber 181. The second oil inlet/outlet 132 communicates with the second hydraulic chamber 182.
The piston 138 is movably coupled to the cylinder 137 along the length of the cylinder 137. A piston rod 139 is connected to the piston 138. The cylinder 137 is fitted around the piston 139. Thus, the piston rod 139 and the cylinder 137 are substantially coaxial. The piston rod 139 passes through the first hydraulic pressure chamber 181 and the second hydraulic pressure chamber 182. The end of the plunger rod 139 remote from the plunger 138 is an extended end 146. That is, both sides of the piston 138 are provided with protruding ends 146. An extended end 146 is disposed through the first end cap 142 and extends to a side of the first end cap 142 away from the cylinder 137 to extend out of the cylinder assembly. The other protruding end 146 penetrates through the second end cover 143 and extends to a side of the second end cover 143 away from the cylinder 137 to extend into the avoiding cavity 183. Thus, the protruding end 146 is connected to the cylinder 137 through the end cap. Thus, both ends of the cylinder 137 support the piston rod 139 through the end caps, and further, the piston 138 also supports the piston rod 139. Therefore, in the working process of the hydraulic cylinder 130, the stress of the piston rod 139 is stable, and the hydraulic cylinder 130 is not easy to damage.
In this embodiment, the piston rod 139 is connected to the piston 138, two ends of the piston rod 139 are connected to the cylinder 137, the cylinder assembly supports two ends of the piston rod 139, and the piston 138 also supports the piston rod 139, so that the piston rod 139 is stressed stably during the operation of the hydraulic cylinder 130, and the hydraulic cylinder 130 is not easily damaged.
Preferably, the piston rod 139 comprises a first rod part 140 and a second rod part 141. The first rod part 140 and the second rod part 141 are coaxially disposed. The first rod part 140 and the second rod part 141 are sequentially disposed along the length direction of the cylinder 137. The opposite ends of the first and second rod portions 140 and 141 are each connected to the piston 138. The ends of the first and second lever part 140, 141 facing away from each other form a protruding end 146. The protruding end 146 of the first rod 140 penetrates the first end cap 142 and extends to a side of the first end cap 142 away from the cylinder 137 to protrude out of the cylinder assembly. The protruding end 146 of the second rod 141 penetrates through the second end cover 143, and extends to a side of the second end cover 143 away from the cylinder 137 to extend into the avoiding cavity 183. Thereby, the installation of the piston rod 139 is facilitated.
The cylinder assembly also includes an end guard 144. The end guard 144 is connected to an end of the second end cap 143 remote from the cylinder 137. The end guard 144 has an escape cavity 183. The avoidance cavity 183 is a blind hole. The protruding end 146 of the second rod portion 141 protrudes into the relief cavity 183. Thus, the end protection part 144 can shield the protruding end 146 of the second lever part 141 to protect the protruding end 146 of the second lever part 141.
With continued reference to fig. 2 and 3, the hydraulic cylinder 130 also includes two earrings 145. An ear 145 is attached to the protruding end 146 of the first shaft portion 140. The other ear 145 is connected to an end of the end guard 144 remote from the cylinder 137. First rod portion 140 is connected to body 170 via earring 145. The end guard 144 is connected to the bogie 150 by an ear 145.
Preferably, the cylinder assembly further comprises an upper connector and a lower connector. The upper and lower connectors are connected to the outer circumferential surface of the cylinder 137. The inner channel of the upper connector is communicated to the first oil inlet and outlet 131. The inner passage of the lower connector is communicated to the second oil inlet and outlet 132. The upper and lower connectors are sequentially disposed along the length direction of the cylinder 137. The upper connector and the lower connector are both used for connecting pipelines.
The utility model also provides a hydraulic means. The hydraulic device comprises the hydraulic cylinder.
Returning to fig. 1, when at least one of the first vehicle body 171 and the second vehicle body 172 rotates about an axis parallel to the traveling direction a of the railway vehicle (the direction indicated by an arrow in fig. 1) to roll, the hydraulic device can suppress the roll of the first vehicle body 171 and/or the second vehicle body 172. The hydraulic device can suppress the up-down movement of the first vehicle body 171 and/or the second vehicle body 172 when the up-down movement of at least one of the first vehicle body 171 and the second vehicle body 172 occurs.
The hydraulic cylinder 130 is provided at an end portion of the vehicle body 170 so that the hydraulic device can suppress the nodding phenomenon of the first vehicle body 171 and/or the second vehicle body 172 when the end portion of the vehicle moves up and down (nodding phenomenon).
Referring to fig. 1, the hydraulic cylinder 130 is located between the car body 170 and the bogie 150 in the height direction of the railway vehicle. The hydraulic cylinder 130 is vertically disposed between the car body 170 of the railway vehicle and the bogie 150. Thus, the piston rod 139 of the hydraulic cylinder 130 is movable in the height direction of the track vehicle. The protruding end 146 of the first rod part 140 is connected to the vehicle body 170 via an ear 145 in the height direction of the railway vehicle. The end guard 144 is connected to the bogie 150 by an ear 145.
It will be appreciated that in an embodiment not shown, the projecting end of the first bar portion is connected to the bogie frame by an ear loop in the height direction of the rail vehicle. The end guard is connected to the vehicle body by an earring.
When the cylinder 130 is coupled to the body 170, the first oil inlet/outlet 131 is positioned above the second oil inlet/outlet 132 in the height direction of the rail vehicle.
As shown in fig. 1, the hydraulic cylinder 130 includes a first hydraulic cylinder 133, a second hydraulic cylinder 134, a third hydraulic cylinder 135, and a fourth hydraulic cylinder 136. The first and second hydraulic cylinders 133 and 134 are provided between the first body 171 and the first bogie 151 and connected to the first body 171 and the first bogie 151. The first hydraulic cylinder 133 and the second hydraulic cylinder 134 are disposed at an interval in the width direction of the first body 171. The third and fourth hydraulic cylinders 135, 136 are adapted to be disposed between the second vehicle body 172 and the second bogie 152 and are connected to the second vehicle body 172 and the second bogie 152. The third cylinder 135 and the fourth cylinder 136 are spaced apart in the width direction of the second vehicle body 172.
With continued reference to fig. 1, the hydraulic device further includes an accumulator. The accumulators include a first accumulator 110 and a second accumulator 120.
As shown in fig. 1, the first oil inlet/outlet 131 of the first hydraulic cylinder 133 is connected to the second oil inlet/outlet 132 of the second hydraulic cylinder 134 through a pipeline. The second oil inlet/outlet 132 of the first hydraulic cylinder 133 is communicated to the first oil inlet/outlet 131 of the second hydraulic cylinder 134 through a pipeline. The first oil inlet/outlet 131 of the third hydraulic cylinder 135 is communicated to the second oil inlet/outlet 132 of the fourth hydraulic cylinder 136 through a pipeline. The second oil inlet/outlet 132 of the third hydraulic cylinder 135 is communicated to the first oil inlet/outlet 131 of the fourth hydraulic cylinder 136 through a pipeline.
The second oil inlet/outlet 132 of the first hydraulic cylinder 133 and the first oil inlet/outlet 131 of the third hydraulic cylinder 135 are communicated through a pipeline. The second oil inlet/outlet 132 of the second hydraulic cylinder 134 and the first oil inlet/outlet 131 of the fourth hydraulic cylinder 136 are communicated through a pipeline.
The first accumulator 110 is connected to a line between the second oil inlet/outlet 132 of the first hydraulic cylinder 133 and the first oil inlet/outlet 131 of the third hydraulic cylinder 135. The second accumulator 120 is connected to a line between the second oil port 132 of the second hydraulic cylinder 134 and the first oil port 131 of the fourth hydraulic cylinder 136.
When roll occurs in one of the first vehicle body 171 and the second vehicle body 172, the hydraulic device suppresses roll. The present embodiment explains the principle of the hydraulic device suppressing the roll in the first operating condition and the second operating condition.
The first operating condition is that the first vehicle body 171 does not roll and the second vehicle body 172 rolls in the direction B about an axis parallel to the direction of travel a of the rail vehicle.
Referring to FIG. 1, during the first operating condition, when the second body 172 rolls in the direction B, the piston 138 of the third hydraulic cylinder 135 moves upward and the piston 138 of the fourth hydraulic cylinder 136 moves downward. Thus, the volume of the first hydraulic chamber 181 of the third hydraulic cylinder 135 decreases, the volume of the second hydraulic chamber 182 of the third hydraulic cylinder 135 increases, the volume of the first hydraulic chamber 181 of the fourth hydraulic cylinder 136 increases, and the volume of the second hydraulic chamber 182 of the fourth hydraulic cylinder 136 decreases.
In the first operating condition, the volume of the first hydraulic chamber 181 of the third hydraulic cylinder 135 decreases, and the volume of the second hydraulic chamber 182 of the fourth hydraulic cylinder 136 decreases, such that the fluid in the third hydraulic cylinder 135 and the fluid in the fourth hydraulic cylinder 136 generate a moment that resists roll of the second vehicle body 172.
In the first operating condition, during the process that the volume of the first hydraulic chamber 181 of the third hydraulic cylinder 135 is reduced and the volume of the second hydraulic chamber 182 of the fourth hydraulic cylinder 136 is reduced, the oil in the first hydraulic chamber 181 of the third hydraulic cylinder 135 and the oil in the second hydraulic chamber 182 of the fourth hydraulic cylinder 136 enter the second hydraulic chamber 182 of the first hydraulic cylinder 133 and the first hydraulic chamber 181 of the second hydraulic cylinder 134 through the pipeline, so that the oil pressure of the oil in the second hydraulic chamber 182 of the first hydraulic cylinder 133 and the oil pressure of the oil in the first hydraulic chamber 181 of the second hydraulic cylinder 134 are increased.
In the first operating condition, as the oil pressure of the oil in the second hydraulic chamber 182 of the first hydraulic cylinder 133 and the oil pressure of the oil in the first hydraulic chamber 181 of the second hydraulic cylinder 134 increase, the piston 138 of the first hydraulic cylinder 133 moves upward and the piston 138 of the second hydraulic cylinder 134 moves downward, so that the first vehicle body 171 rolls in the direction B about the axis of the travel direction a. At this time, a part of the kinetic energy of the second vehicle body 172 is transferred to the first vehicle body 171 due to the conservation of the kinetic energy, and the vibration of the first vehicle body 171 is further reduced.
In the first operating condition, during the rolling of the first vehicle body 171 in the direction B around the axis of the traveling direction a, the first hydraulic chamber 181 of the first hydraulic cylinder 133 and the second hydraulic chamber 182 of the second hydraulic cylinder 134 enter the second hydraulic chamber 182 of the third hydraulic cylinder 135 and the first hydraulic chamber 181 of the fourth hydraulic cylinder 136 through oil pipes, and finally, a new balance is achieved. At this time, the first vehicle body 171 and the second vehicle body 172 have the roll position restored to the equilibrium position.
In the first operating mode, the above processes are repeated repeatedly during the running of the rail vehicle, and the vehicle body shaking energy can be absorbed greatly due to the effect of the later throttle when the oil fluid is exchanged among the first hydraulic cylinder 133, the second hydraulic cylinder 134, the third hydraulic cylinder 135 and the fourth hydraulic cylinder 136.
The second operating condition is that the second vehicle body 172 rolls in the direction B about an axis parallel to the direction a, and the first vehicle body 171 rolls in the direction opposite to the direction B about an axis parallel to the direction a.
Referring to FIG. 1, during the second operating condition, when the second body 172 rolls in the direction B, the piston 138 of the third cylinder 135 moves upward and the piston 138 of the fourth cylinder 136 moves downward. Thus, the volume of the first hydraulic chamber 181 of the third hydraulic cylinder 135 decreases, the volume of the second hydraulic chamber 182 of the third hydraulic cylinder 135 increases, the volume of the first hydraulic chamber 181 of the fourth hydraulic cylinder 136 increases, and the volume of the second hydraulic chamber 182 of the fourth hydraulic cylinder 136 decreases.
In the second operating condition, the volume of the first hydraulic chamber 181 of the third hydraulic cylinder 135 decreases, and the volume of the second hydraulic chamber 182 of the fourth hydraulic cylinder 136 decreases, such that the fluid in the third hydraulic cylinder 135 and the fluid in the fourth hydraulic cylinder 136 generate a moment that resists roll of the second vehicle body 172.
In the second operating condition, when the first body 171 rolls in the direction opposite to the direction B, the piston 138 of the first hydraulic cylinder 133 moves downward, and the piston 138 of the second hydraulic cylinder 134 moves upward. Thus, the volume of the first hydraulic chamber 181 of the first hydraulic cylinder 133 increases, the volume of the second hydraulic chamber 182 of the first hydraulic cylinder 133 decreases, the volume of the first hydraulic chamber 181 of the second hydraulic cylinder 134 decreases, and the volume of the second hydraulic chamber 182 of the second hydraulic cylinder 134 increases.
In the second operating condition, in the case where the volume of the second hydraulic chamber 182 of the first hydraulic cylinder 133 is reduced and the volume of the first hydraulic chamber 181 of the second hydraulic cylinder 134 is reduced, the oil in the first hydraulic cylinder 133 and the oil in the second hydraulic cylinder 134 generate a moment against the roll of the first vehicle body 171.
In the second operating condition, the oil discharged from the first hydraulic cylinder 133 and the second hydraulic cylinder 134, and the oil discharged from the third hydraulic cylinder 135 and the fourth hydraulic cylinder 136 are discharged into a pipeline communicating the second hydraulic chamber 182 of the first hydraulic cylinder 133 with the first hydraulic chamber 181 of the third hydraulic cylinder 135. And part of the oil in the pipeline communicated with the second hydraulic cavity 182 of the first hydraulic cylinder 133 and the first hydraulic cavity 181 of the third hydraulic cylinder 135 enters the first accumulator to be stored, and finally, the new balance is achieved. At this time, the first and second bodies 171 and 172 return to the equilibrium position with the roll position, and then reverse rotation is again generated, and the above-described process is repeated. When the oil fluid is exchanged among the first hydraulic cylinder 133, the second hydraulic cylinder 134, the third hydraulic cylinder 135, and the fourth hydraulic cylinder 136, the vehicle body shaking energy can be greatly absorbed due to the later throttle function.
The principle of the hydraulic device suppressing the roll of the second vehicle body 172 in the direction opposite to the direction B, and suppressing the roll of the first vehicle body 171 about the axis parallel to the traveling direction a of the railway vehicle is substantially the same as the principle of the hydraulic device suppressing the roll of the second vehicle body 172 in the direction B, and will not be described again.
In this embodiment, the hydraulic device includes the hydraulic cylinder described above, the piston rod 139 is connected to the piston 138, two ends of the piston rod 139 are connected to the cylinder 137, the cylinder assembly supports two ends of the piston rod 139, and the piston 138 also supports the piston rod 139, so that, during the operation of the hydraulic cylinder 130, the stress of the piston rod 139 is stable, and the hydraulic cylinder 130 is not easily damaged; further, the first and second hydraulic cylinders 133 and 134 are connected to the first vehicle body 171, and the third and fourth hydraulic cylinders 135 and 136 are connected to the second vehicle body 172, and hydraulic devices can simultaneously act on the adjacent first and second vehicle bodies 171 and 172 to suppress the roll of the first and second vehicle bodies 171 and 172.
Preferably, the hydraulic means further comprises a throttle valve. The shutoff valve includes a first throttle valve 161 and a second throttle valve 162. The first throttle valve 161 is provided in a pipeline between the second oil inlet/outlet 132 of the first cylinder 133 and the first oil inlet/outlet 131 of the second cylinder 134. The second throttle 162 is provided in a pipeline between the first oil inlet/outlet 131 of the first hydraulic cylinder 133 and the second oil inlet/outlet 132 of the second hydraulic cylinder 134. Thus, when the first vehicle body 171 moves up and down, the hydraulic device can suppress the up and down movement of the first vehicle body 171.
Specifically, when the first vehicle body 171 moves upward, the piston 138 of the first hydraulic cylinder 133 moves upward, and the piston 138 of the second hydraulic cylinder 134 moves upward. At this time, the volume of the first hydraulic chamber 181 of the first hydraulic cylinder 133 decreases, the volume of the second hydraulic chamber 182 of the first hydraulic cylinder 133 increases, the volume of the first hydraulic chamber 181 of the second hydraulic cylinder 134 decreases, and the volume of the second hydraulic chamber 182 of the second hydraulic cylinder 134 increases. The oil in the first hydraulic chamber 181 of the first hydraulic cylinder 133 flows to the second hydraulic chamber 182 of the second hydraulic cylinder 134 through a pipe. The oil in the first hydraulic chamber 181 of the second hydraulic cylinder 134 flows to the second hydraulic chamber 182 of the first hydraulic cylinder 133 through a pipe.
In the process that the oil in the first hydraulic chamber 181 of the first hydraulic cylinder 133 flows into the second hydraulic chamber 182 of the second hydraulic cylinder 134 through the pipeline, under the action of the second throttle valve 162, the pressure in the first hydraulic chamber 181 of the first hydraulic cylinder 133 is greater than the pressure in the second hydraulic chamber 182 of the second hydraulic cylinder 134. When the oil in the first hydraulic chamber 181 of the second hydraulic cylinder 134 flows into the second hydraulic chamber 182 of the first hydraulic cylinder 133 through the pipe, the pressure in the first hydraulic chamber 181 of the second hydraulic cylinder 134 is higher than the pressure in the second hydraulic chamber 182 of the first hydraulic cylinder 133 by the first throttle 161.
When the first vehicle body 171 moves downward, the piston 138 of the first hydraulic cylinder 133 moves downward, and the piston 138 of the second hydraulic cylinder 134 moves downward. At this time, the volume of the first hydraulic chamber 181 of the first hydraulic cylinder 133 increases, the volume of the second hydraulic chamber 182 of the first hydraulic cylinder 133 decreases, the volume of the first hydraulic chamber 181 of the second hydraulic cylinder 134 increases, and the volume of the second hydraulic chamber 182 of the second hydraulic cylinder 134 decreases. The oil in the second hydraulic chamber 182 of the first hydraulic cylinder 133 flows to the first hydraulic chamber 181 of the second hydraulic cylinder 134 through a pipe. The oil in the second hydraulic chamber 182 of the second hydraulic cylinder 134 flows to the first hydraulic chamber 181 of the first hydraulic cylinder 133 through a pipe.
In the process that the oil in the second hydraulic chamber 182 of the first hydraulic cylinder 133 flows into the first hydraulic chamber 181 of the second hydraulic cylinder 134 through the pipeline, under the action of the first throttle valve 161, the pressure in the second hydraulic chamber 182 of the first hydraulic cylinder 133 is greater than the pressure in the first hydraulic chamber 181 of the second hydraulic cylinder 134. When the oil in the second hydraulic chamber 182 of the second hydraulic cylinder 134 flows into the first hydraulic chamber 181 of the first hydraulic cylinder 133 through the pipe, the pressure in the second hydraulic chamber 182 of the second hydraulic cylinder 134 is higher than the pressure in the first hydraulic chamber 181 of the first hydraulic cylinder 133 by the second throttle 162.
Further preferably, the first throttle valve 161 is at least two. The second throttle valve 162 is at least two. This can more effectively suppress the vertical movement of the first vehicle body 171.
The shut-off valve further includes a third throttle valve 163 and a fourth throttle valve 164. The third throttle valve 163 is provided in a pipeline between the second oil inlet/outlet 132 of the third hydraulic cylinder 135 and the first oil inlet/outlet 131 of the fourth hydraulic cylinder 136. The fourth throttle 164 is provided in a pipe between the first oil inlet/outlet 131 of the third hydraulic cylinder 135 and the second oil inlet/outlet 132 of the fourth hydraulic cylinder 136. This can suppress vertical movement of the second vehicle body 172.
It is to be understood that the principle of the hydraulic device for suppressing the up-down movement of the second vehicle body 172 by providing the third throttle valve 163 and the fourth throttle valve 164 is the same as the principle of suppressing the up-down movement of the first vehicle body 171, and will not be described in detail here.
Further preferably, the third throttle valve 163 is at least two. The fourth throttle valve 164 is at least two. This can more effectively suppress the vertical movement of the second vehicle body 172.
The utility model also provides a rail vehicle. The rail vehicle comprises the aforementioned hydraulic device.
The rail vehicle of the embodiment comprises the hydraulic device, the hydraulic device comprises the hydraulic cylinder, the piston rod 139 is connected to the piston 138, two ends of the piston rod 139 are connected to the cylinder 137, the cylinder assembly supports two ends of the piston rod 139, and the piston 138 also supports the piston rod 139, so that the stress of the piston rod 139 is stable in the working process of the hydraulic cylinder 130, and the hydraulic cylinder 130 is not easy to damage; further, the first and second hydraulic cylinders 133 and 134 are connected to the first vehicle body 171, and the third and fourth hydraulic cylinders 135 and 136 are connected to the second vehicle body 172, and hydraulic devices can simultaneously act on the adjacent first and second vehicle bodies 171 and 172 to suppress the roll of the first and second vehicle bodies 171 and 172.
The vehicle includes adjacent first and second bodies 171, 172. The first hydraulic cylinder 133 and the second hydraulic cylinder 134 are both connected to the first body 171. The third cylinder 135 and the fourth cylinder 136 are both connected to the second vehicle body 172.
The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "component" and the like, when used herein, can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like, as used herein, may refer to one component as being directly attached to another component or one component as being attached to another component through intervening components. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is not applicable or otherwise stated in the other embodiment.
Claims (10)
1. A hydraulic cylinder, comprising:
the cylinder body assembly is internally provided with a hydraulic cavity and an avoiding cavity;
the piston is slidably arranged in the hydraulic cavity and divides the hydraulic cavity into a first hydraulic cavity and a second hydraulic cavity, and the first hydraulic cavity, the second hydraulic cavity and the avoidance cavity are sequentially arranged along the length direction of the cylinder body assembly;
the piston rod is fixedly connected with the piston and penetrates through the first hydraulic cavity and the second hydraulic cavity, one end of the piston rod extends into the avoidance cavity, and the other end of the piston rod extends out of the cylinder body assembly;
the cylinder body subassembly is equipped with first fluid and imports and exports with second fluid, follows the length direction of cylinder body subassembly, first fluid is imported and exported and is located one side of piston, second fluid is imported and exported and is located the opposite side of piston, first fluid import and export with first hydraulic pressure chamber intercommunication, second fluid import and export with second hydraulic pressure chamber intercommunication.
2. The hydraulic cylinder according to claim 1, wherein the piston rod comprises a first rod portion and a second rod portion, the first rod portion and the second rod portion are sequentially arranged along the length direction of the cylinder block assembly, opposite ends of the first rod portion and the second rod portion are connected to the piston, one end of the first rod portion, which is far away from the piston, extends out of the cylinder block assembly, and one end of the second rod portion, which is far away from the piston, extends into the avoiding cavity.
3. The hydraulic cylinder according to claim 1, wherein the cylinder block assembly comprises a cylinder block, a first end cap, a second end cap, and an end protection portion, the first end cap is connected to one end of the cylinder block, the second end cap is connected to the other end of the cylinder block, the end protection portion has an avoidance cavity, the end protection portion is connected to one end of the second end cap away from the cylinder block, the other end of the piston rod penetrates through the first end cap to extend out of the cylinder block assembly, and the one end of the piston rod penetrates through the second end cap to extend into the avoidance cavity.
4. Hydraulic device for a rail vehicle, characterized in that it comprises a hydraulic cylinder according to any one of claims 1 to 3,
the hydraulic cylinder is vertically arranged between a vehicle body and a bogie of the railway vehicle, an extending end of the piston rod extending out of the cylinder body assembly is used for being connected with one of the vehicle body and the bogie, and an end part of the cylinder body assembly, far away from the extending end extending out of the cylinder body assembly, is used for being connected with the other one of the vehicle body and the bogie;
wherein the hydraulic cylinders comprise a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder and a fourth hydraulic cylinder, the first hydraulic cylinder and the second hydraulic cylinder are used for being connected to a first vehicle body, and a first bogie connected with the first vehicle body, the first hydraulic cylinder and the second hydraulic cylinder are arranged at intervals along the width direction of the first vehicle body, the third hydraulic cylinder and the fourth hydraulic cylinder are used for being connected to a second vehicle body adjacent to the first vehicle body, and a second bogie connected with the second vehicle body, the third hydraulic cylinder and the fourth hydraulic cylinder are arranged at intervals along the width direction of the second vehicle body,
the first oil inlet and outlet of the first hydraulic cylinder are communicated to the second oil inlet and outlet of the second hydraulic cylinder, the second oil inlet and outlet of the first hydraulic cylinder are communicated to the first oil inlet and outlet of the second hydraulic cylinder, the first oil inlet and outlet of the third hydraulic cylinder are communicated to the second oil inlet and outlet of the fourth hydraulic cylinder, the second oil inlet and outlet of the third hydraulic cylinder are communicated to the first oil inlet and outlet of the fourth hydraulic cylinder, the second oil inlet and outlet of the first hydraulic cylinder are communicated to the first oil inlet and outlet of the third hydraulic cylinder, and the second oil inlet and outlet of the second hydraulic cylinder are communicated to the first oil inlet and outlet of the fourth hydraulic cylinder.
5. The hydraulic device of claim 4, further comprising:
a first accumulator communicated to the second oil inlet/outlet of the first hydraulic cylinder and the first oil inlet/outlet of the third hydraulic cylinder;
a second accumulator communicated to the second oil inlet/outlet of the second hydraulic cylinder and the first oil inlet/outlet of the fourth hydraulic cylinder.
6. The hydrostatic assembly of claim 4, further comprising a first choke disposed in a conduit between the second oil inlet and outlet of the first cylinder and the first oil inlet and outlet of the second cylinder, and a second choke disposed in a conduit between the first oil inlet and outlet of the first cylinder and the second oil inlet and outlet of the second cylinder.
7. The hydraulic apparatus of claim 6, wherein the first throttle is at least two and the second throttle is at least two.
8. The hydraulic apparatus of claim 4, further comprising a third throttle disposed in a conduit between the second oil inlet and outlet of the third cylinder and the first oil inlet and outlet of the fourth cylinder, and a fourth throttle disposed in a conduit between the first oil inlet and outlet of the third cylinder and the second oil inlet and outlet of the fourth cylinder.
9. The hydraulic apparatus of claim 8, wherein the third throttle is at least two and the fourth throttle is at least two.
10. A rail vehicle comprising a first car body, a second car body, a first bogie, a second bogie and a hydraulic device according to any one of claims 4 to 9, the first car body being disposed adjacent the second car body, the first car body being connected to the first bogie, the second car body being connected to the second bogie, the first and second hydraulic cylinders being disposed between the first car body and the first bogie, the third and fourth hydraulic cylinders being disposed between the second car body and the second bogie.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222257274.1U CN218000042U (en) | 2022-08-25 | 2022-08-25 | Hydraulic cylinder, hydraulic device and rail vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222257274.1U CN218000042U (en) | 2022-08-25 | 2022-08-25 | Hydraulic cylinder, hydraulic device and rail vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN218000042U true CN218000042U (en) | 2022-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222257274.1U Active CN218000042U (en) | 2022-08-25 | 2022-08-25 | Hydraulic cylinder, hydraulic device and rail vehicle |
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| Country | Link |
|---|---|
| CN (1) | CN218000042U (en) |
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2022
- 2022-08-25 CN CN202222257274.1U patent/CN218000042U/en active Active
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