Railway wagon brake cylinder piston position detection device

Abstract

The utility model provides a railway wagon brake cylinder piston position detection device which comprises an annular support provided with an installation hole and a microswitch installed on the annular support, the annular support is sleeved on a designated position of a railway wagon brake cylinder piston rod, and when a brake cylinder is in a release position, the microswitch is installed on the annular support. The contact of the microswitch can be just in contact with the brake cylinder front cover, and the microswitch is closed; when the brake cylinder is in a brake position, the contact of the microswitch leaves the brake cylinder front cover, and the microswitch is switched off; the annular support is further provided with a battery and a wireless communication module, and the position of the microswitch is transmitted to an upper-level device through the wireless communication module. The defect that in the prior art, a plug on the brake cylinder body is removed, and a detection element is additionally arranged to detect the position of the brake cylinder piston is effectively overcome, the original structure of the brake cylinder body continues to be used, and the problem that in the prior art, the air tightness of the brake cylinder is damaged to monitor the position of the brake cylinder piston, and then the reliability of the brake cylinder is affected is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the device field for monitoring or checking brake system especially relates to a railway wagon brake cylinder piston position detection device. BACKGROUND

[0002] The air brake cylinder is a common brake structure in the existing railway wagon and is one of the most important parts when the railway wagon runs. The brake cylinder piston has two positions, one is the relief position and the other is the brake position. Before the railway freight train departs, the train brake performance needs to be tested to ensure that each brake is normal. The train brake test (commonly known as the test wind) needs the train inspector to judge the braking condition of each brake cylinder and whether the brake cylinder can be completely relieved when relieved. At present, the more common test wind form is the running test wind, which requires the train inspector to run along the train and observe the position of each brake cylinder piston. Since the brake cylinder is installed on one side of the bottom position of the railway wagon, the installation height is low, and the train inspector needs to bend over and turn his head several times to observe all the brake cylinder piston positions. Moreover, during transportation, the vehicle needs to be coupled, uncoupled and coupled again several times, which causes the brake cylinders of a part of the vehicles to be on the left side and the brake cylinders of another part of the vehicles to be on the right side in the same train. During the test wind, the train inspector can only run and observe on one side of the train, and the brake cylinder piston rod is at the same height as the brake cylinder piston rod, and the brake cylinder piston rod is much larger in diameter than the brake cylinder piston rod, so it is difficult to observe the position of the brake cylinder piston on the other side. The train inspection operation is a 24-hour operation, and it is more difficult for the train inspector to judge the position of the brake cylinder piston under the condition of insufficient lighting at night. The above reasons lead to frequent failure to detect the train inspection operation, and there is a great safety risk in train operation.

[0003] The Chinese utility model patent with the publication number CN221293480U discloses a railway wagon brake cylinder state monitoring device, which comprises a barrel-shaped shell connected to the rear cover of the brake cylinder body and having a barrel opening facing the rear cover. The inside of the shell is provided with a contact rod and at least two micro switches cooperating with the contact rod. The two micro switches are installed in the shell along the axis of the contact rod, closest to one end of the brake cylinder and farthest from the other end of the brake cylinder. The contact rod is movably connected to the shell, with one end extending into the brake cylinder body and connected to the piston, and the other end can cooperate with the multiple micro switches arranged along the axis of the contact rod. The movement of the piston drives the movement of the contact rod, and the other end of the contact rod can contact the at least two micro switches. If the micro switch closest to the brake cylinder transmits an electrical signal, the brake cylinder is in the brake compression state. If the micro switch farthest from the brake cylinder transmits an electrical signal, the brake cylinder is in the relief state. If neither of the two micro switches transmits an electrical signal, it indicates that the brake cylinder is not completely braked or relieved. Multiple micro switches can be installed to determine the operating state of the brake cylinder piston according to the electrical signal of the micro switch at different positions.

[0004] However, the problem of this scheme is that the device needs to remove the screw plug on the brake cylinder body rear cover, install the brake cylinder state monitoring device on the original position of the screw plug, and the detection rod is matched with the micro switch in the brake cylinder state monitoring device at one end, and the other end needs to enter the brake cylinder body and be connected with the brake cylinder piston, so that the original structure of the brake cylinder body is damaged. Since the sealing connection part is an additional component, and the running environment of the train is complex, the sealing connection part may be damaged to cause the cylinder to leak, affecting the reliability of the brake cylinder. Utility model content

[0005] The utility model discloses a railway freight car brake cylinder piston position detection device to solve the problem of the prior art that the brake cylinder body must be reformed to detect whether the brake cylinder piston is in the completely relieved state, which affects the reliability of the brake cylinder.

[0006] To achieve the above object, the utility model provides a railway freight car brake cylinder piston position detection device, including annular support that is equipped with installation hole and micro switch that is installed on annular support, and the annular support is sleeved on the specified position of railway freight car brake cylinder piston rod, so that when the brake cylinder is in the relieved position, the contact of micro switch is on the axial side of annular support, can just contact with brake cylinder front cover, and micro switch is closed, when the brake cylinder is in the brake position, the contact of micro switch is away from brake cylinder front cover, and micro switch is disconnected, annular support is also installed with wireless communication module for signal transmission, battery for powering micro switch and wireless communication module and self -generating module for charging battery, when train brake tester, as long as brake cylinder piston position changes, no matter from brake position to relieved position or from relieved position to brake position, the device will transmit the latest position information of micro switch to the upper device through wireless communication module, when train operation, the device automatically records the change situation and time of micro switch, and these records are transmitted to the upper device at certain time interval through wireless communication module, when piston rod stretches out, retracts and compresses self -generating module, and self -generating module will generate electricity and charge battery, the defects of the method of removing screw plug on brake cylinder body and adding detection element to detect brake cylinder piston position in the prior art are avoided, the original structure of brake cylinder body is followed, and the problem that the brake cylinder air tightness may be damaged to affect the reliability of the brake cylinder in the prior art for monitoring brake cylinder piston position is solved.

[0007] Further, the annular support is an arc-shaped split structure, and the end portions of the corresponding ends of the two adjacent arc-shaped splits have a splicing structure.

[0008] Further, the splicing structure includes a closed slot at the end portion of one of the two adjacent arc-shaped splits and an adaptive clamping head at the end portion of the other arc-shaped split, and the closed slot and the adaptive clamping head are axially slidingly clamped.

[0009] Further, the arc-shaped segment is a hollow shell structure, the micro switch, the battery and the wireless communication module are all installed in the inner cavity of the hollow shell.

[0010] Further, there are two arc-shaped segments, and the battery and the wireless communication module are installed in one arc-shaped segment, and the micro switch is installed in the other arc-shaped segment.

[0011] Further, a radial threaded hole is arranged on one of the arc-shaped segments, and a jacking screw is arranged in the threaded hole to jacking the annular support on the piston rod of the brake cylinder.

[0012] Further, the jacking screw is on the arc-shaped segment where the micro switch is located.

[0013] Further, the micro switch is located at the middle position of the arc-shaped segment, and the jacking screw has two and is symmetrically arranged on the circumferential two sides of the micro switch.

[0014] Further, the hollow arc-shaped segment includes an arc-shaped slot shell with an axial opening and a cover installed at the slot opening of the arc-shaped slot shell, and the switch contact of the micro switch extends from the slot bottom.

[0015] Further, the end slot wall of one of the two arc-shaped slot shells which are spliced with each other is provided with a T-shaped clamping slot with a T-shaped axial section, and the T-shaped clamping slot constitutes the closing clamping slot, and the end slot wall of the other arc-shaped slot shell is provided with a T-shaped T-shaped clamping head, and the T-shaped clamping head constitutes the adaptive clamping head of the T-shaped clamping slot, and the T-shaped clamping head and the T-shaped clamping slot are axially slidingly clamped.

[0016] Beneficial effects:

[0017] The utility model discloses a kind of railway wagon brake cylinder piston position detection devices, including the annular support being equipped with mounting hole and microswitch being installed on annular support, annular support is sleeved on the specified position of railway wagon brake cylinder piston rod, so that brake cylinder is in relief position, the contact of microswitch can just contact with brake cylinder front cover, microswitch is closed;Brake cylinder is in brake position, the contact of microswitch is away from brake cylinder front cover, microswitch is disconnected;Annular support is also installed with battery, self-generating module and wireless communication module;When train brake tester, as long as brake cylinder piston position changes, whether from brake position to relief position, or from relief position to brake position, the latest position of microswitch will be transmitted to upper device by wireless communication module by this device;When train runs, this device automatically records microswitch change and time, and these records are transmitted to upper device by wireless communication module at certain time interval;When piston rod extends, self-generating module is compressed, self-generating module will generate electricity and charge battery;The defects of the prior art are effectively avoided, the original structure of brake cylinder body is followed, the problem that brake cylinder air tightness can be damaged in the prior art for monitoring brake cylinder piston position, and then the reliability of brake cylinder is affected. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is structural schematic view when railway wagon brake cylinder piston position detection device contacts with brake cylinder front cover.

[0019] Figure 2 It is structural schematic view when piston rod of brake cylinder installed with railway wagon brake cylinder piston position detection device extends.

[0020] Figure 3 It is overall structural schematic view of railway wagon brake cylinder piston position detection device.

[0021] Figure 4 It is structural schematic view after front wall plate of railway wagon brake cylinder piston position detection device is removed.

[0022] In the drawing: 1. Microswitch;2. Brake cylinder piston rod;3. Brake cylinder front cover;4. Annular support;5. Plate mounting hole;51. Plate mounting seat;52. Plate mounting screw hole;6. Arc split;61. Arc slot shell;7. Cover;8. T-shaped clamp;9. T-shaped slot;10. Mounting hole;11. Threaded hole;14. Battery;15. Wireless communication module;16. Self-generating module. DETAILED DESCRIPTION

[0023] The features and performance of the utility model are further described in detail in the following embodiment.

[0024] The utility model discloses a principle and conception are, provide a kind of detection device of being sleeved on the brake cylinder piston rod of railway wagon, the brake cylinder of railway wagon is prior art, brake cylinder of different models, its structure, function are basically same, brake cylinder used in the utility model is the model of brake cylinder piston rod and piston synchronous movement, power and wireless communication module are provided on the detection device, and when the detection contact of this detection device and brake cylinder front cover just contact, brake cylinder is judged to be in relief position, detection contact and brake cylinder front cover are not contacted, then brake cylinder is judged to be in brake position;Brake cylinder piston position changes time, by wireless communication module remote transmission to the device of upper level, find out brake fault vehicle by comparing brake cylinder position of each vehicle of whole train;Brake cylinder piston position is detected by the detection device of being sleeved on brake cylinder piston rod, avoid prior art, remove brake cylinder screw plug installation detection device technical scheme, without damaging the cylinder body structure of brake cylinder, while guaranteeing the reliability of brake cylinder, provide accurate brake cylinder piston position data.

[0025] On the basis of the above principle and conception, the utility model provides a railway wagon brake cylinder piston position detection device and various embodiments thereof for further illustration.

[0026] On the basis of the above principle and conception, in a basic embodiment, as Figures 1-4The utility model provides an example, the utility model provides a railway freight car brake cylinder piston position detection device including annular support 4 and install micro -switch 1 on annular support 4 on annular support 4 center hole is used to install hole 10 of the support 4 set in brake cylinder piston rod 2, the contact of micro -switch 1 is in the one side of annular support 4 axial, annular support 4 still install wireless communication module 15 for receiving and sending micro -switch 1 signal on, still be provided with the battery 14 of providing power to micro -switch 1 and wireless communication module 15 in annular support 4, for the self -power module 16 of charging battery, annular support 4 is fixed in the specific position of brake cylinder piston rod 2, can when brake cylinder completely alleviates, the contact of micro -switch 1 just contacts brake cylinder front cover 3, micro -switch 1 and brake cylinder front cover 3 contact, indicate that brake cylinder is in the alleviation position, micro -switch 1 leaves brake cylinder front cover 3, indicate that brake cylinder is in the brake position, when train brake tester, as long as brake cylinder piston position changes, whether from the brake position to the alleviation position, or from the alleviation position to the brake position, the device will pass through wireless communication module 15 and transmit the latest position of micro -switch 1 to the higher level device, when train operation, the device automatically records the change situation and time of micro -switch 1, and these records are transmitted to the higher level device at a certain time interval through wireless communication module 15, find out the brake failure vehicle by comparing the brake cylinder position of each vehicle of the whole train. Such use fixed installation railway freight car brake cylinder piston position detection device on brake cylinder piston rod 2, avoided the defect of the method of removing the screw plug on the brake cylinder body and installing detection elements to detect the brake cylinder piston position in the prior art, followed the original structure of the brake cylinder body, solved the problem that the brake cylinder air tightness may be damaged in the prior art to monitor the brake cylinder piston position, and further influenced the reliability of brake cylinder.

[0027] On the basis of the above embodiment, in an embodiment, as Figures 1-4 Provided in the embodiments, annular support 4 is split type structure, is spliced by several arc split 6, the butt joint of the butt joint structure set on the end head of arc split 6 two ends in adjacent two arc split 6, in another embodiment, annular support 4 can also be integrated annular frame.

[0028] On the basis of the above embodiment, in an embodiment, as Figures 1-4 Provided in the embodiments, the butt joint structure includes the close -mouthed card slot set on the end of one of adjacent two arc split 6, and the adaptive card head of the close -mouthed card slot adaptation set on the end of another arc split 6, the close -mouthed card slot and adaptive card head are slidably mounted in the axial direction to splice multiple arc split 6 into complete annular support 4, in another embodiment, the end of arc split 6 is plane, and the fixed connection between adjacent arc split 6 is realized by smearing structural glue on the adhering surface of adjacent arc split 6.

[0029] On the basis of the above-mentioned embodiments, in one embodiment, as Figures 1-4 provided in the embodiments, the arc-shaped segment 6 is a hollow shell structure, the micro switch 1, the battery 14 and the wireless communication module 15 are all installed in the hollow inner cavity of the arc-shaped segment 6, and the micro switch 1 is electrically connected with the battery 14 and the wireless communication module 15 through wires (not shown in the figure); in another embodiment, three independent mounting brackets are uniformly arranged along the outer ring surface of the arc-shaped segment 6, and the micro switch 1, the battery 14 and the wireless communication module 15 are respectively installed on the three independent mounting brackets.

[0030] On the basis of the above-mentioned embodiments, in one embodiment, as Figures 1-4 provided in the embodiments, two arc-shaped segments 6 are arranged, the battery 14 and the wireless communication module 15 are installed in one of the arc-shaped segments 6, and the micro switch 1 is installed in the other arc-shaped segment 6.

[0031] On the basis of the above-mentioned embodiments, in one embodiment, as Figures 1-4 provided in the embodiments, one of the two arc-shaped segments 6 is provided with a radial threaded hole 11, and a jacking screw for jacking the annular bracket 4 on the brake cylinder piston rod 2 is arranged in the threaded hole 11; in another embodiment, a radial through hole is formed in one of the two arc-shaped segments 6, a threaded hole is formed on the brake cylinder piston rod 2 at a position corresponding to the radial through hole, and a bolt is passed through the threaded hole to cooperate with the threaded hole to fix the annular bracket 4 on the brake cylinder piston rod 2; in another embodiment, the fixation of the arc-shaped segment 6 is achieved by smearing structural glue on the contact surface between the two arc-shaped segments 6 and the brake cylinder piston rod 2.

[0032] On the basis of the above-mentioned embodiments, in one embodiment, as Figures 1-4 provided in the embodiments, the two arc-shaped segments 6 are vertically spliced into an annular support bracket, the micro switch 1 is installed in the arc-shaped segment 6 at the upper end, and the detection contact of the micro switch 1 penetrates through the groove bottom; the inner and outer arc-shaped wall plates of the arc-shaped segment 6 at the upper end are also provided with a jacking screw hole 11 penetrating through the inner and outer arc-shaped wall plates; in another embodiment, the micro switch 1 can also be arranged in the arc-shaped segment 6 at the lower end.

[0033] On the basis of the above-mentioned embodiments, in one embodiment, as Figures 1-4 provided in the embodiments, the micro switch 1 is installed at the middle position of the arc-shaped segment 6, and the threaded holes 11 are two in number and symmetrically arranged on the two sides of the micro switch 1; in another embodiment, the threaded holes 11 can be provided in multiple numbers and can be arranged at any position meeting the installation environment of the jacking screw, and the threaded holes 11 in different numbers and different positions all fall within the protection scope of the utility model.

[0034] Based on the above embodiments, in one embodiment, such as Figures 1-4 In the provided embodiment, the hollow arc-shaped segment 6 includes an arc-shaped groove shell 61 with an opening along the axial direction of the arc-shaped segment 6, and a cover 7 installed at the groove opening of the arc-shaped groove shell 61. A cover plate mounting seat 51 is also provided on the inner wall surface of both ends of the hollow arc-shaped segment 6. A cover plate mounting screw hole 52 is provided on the cover plate mounting seat 51. A cover plate mounting hole 5 is provided on the cover plate 7 at the position corresponding to the cover plate mounting screw hole 52. A bolt is used to pass through the cover plate mounting hole 5 and cooperate with the cover plate mounting screw hole 52 to fix the cover plate 7 at the groove opening of the arc-shaped segment 6. The probe of the micro switch 1 passes through the bottom of the groove and extends out.

[0035] Based on the above embodiments, in one embodiment, such as Figures 1-4 In the provided embodiment, one of the two interlocking arc-shaped groove shells 61 has a T-shaped groove 9 with a T-shaped cross-section on one end of its groove wall, which constitutes the aforementioned closing groove; the other arc-shaped groove shell 61 is provided with a T-shaped head 8 corresponding to the T-shaped groove 9, which constitutes an adapter head. The T-shaped head 8 and the T-shaped groove 9 are slidably engaged in the axial direction to ensure the reliability of the splicing of the two adjacent arc-shaped groove shells 6; in another embodiment, the closing groove can also be set as an L-shaped groove with an L-shaped cross-section or a dovetail groove with a dovetail cross-section, and the adapter head is set as an L-shaped head and a dovetail head corresponding to the aforementioned L-shaped groove and dovetail groove.

[0036] The utility model provides a railway freight car brake cylinder piston position detection device, when using, prearranges micro -switch 1 and battery 14, circuit board 15 and so on element installs in corresponding arc split 6 in and installs the sealing plate 7, installs the arc split 6 of one half that first and brake cylinder piston rod 2 are pasted together, then the other half arc split 6 is pasted together through T type chuck 8 and the T type clamping groove 9 of arc split 6 of prearranging on brake cylinder piston rod 2, and becomes a complete annular support 4, adjusts the position of annular support 4, guarantees when brake cylinder is in complete relief state, micro -switch 1 just pastes together with brake cylinder front cover 3, keeps annular support 4 position unchanged, uses the top silk to pass through threaded hole 11 and presses brake cylinder piston rod 2 to fix annular support 4, and micro -switch 1 will switch signal transmission to wireless communication module 15, and will switch signal transmission to control terminal through wireless communication module 15. In the same train, the brake pipe of every vehicle is connected, and the brake cylinder piston position of every vehicle is controlled through the pressure change of train brake pipe. Under normal circumstances, when the pressure of train brake pipe rises to the constant pressure, the brake cylinder piston position of every vehicle will be in the relief position; when the pressure of train brake pipe drops by 50kPa and above, the brake cylinder piston position of every vehicle will be in the brake position. If the brake cylinder piston position of one or several vehicles is different from the brake cylinder piston position of the rest vehicles in the same train, it is determined that the brake of the one or several vehicles has a fault and must be repaired.

[0037] The above is only the preferred embodiment of the utility model and does not limit the utility model, and the patent protection scope of the utility model is subject to the claims, and equivalent structural changes made by applying the contents of the specification and drawings of the utility model should be reasonably included in the protection scope of the utility model.

Claims

1. A railway car brake cylinder piston position detection device, characterized by, The application relates to a brake cylinder micro-motion switch, which comprises a ring-shaped support, a center hole of the ring-shaped support is a mounting hole for sleeving on a brake cylinder piston rod, a micro-motion switch is arranged on the ring-shaped support, switch contacts of the micro-motion switch are located on one side of the ring-shaped support in the axial direction, a wireless communication module for signal transmission is arranged on the ring-shaped support, a battery for supplying power to the micro-motion switch and the wireless communication module, and a self-generating module for charging the battery.

2. A railway car brake cylinder piston position detection device as defined in claim 1 wherein, The ring-shaped support is an arc-shaped split splicing structure, and the end portions of the corresponding ends of the two adjacent arc-shaped splits have splicing structures.

3. A railway wagon brake cylinder piston position detection device according to claim 2, characterised in that the splice The structure comprises a closed slot at the end portion of one of the two adjacent arc-shaped splits and an adaptive clamping head at the end portion of the other arc-shaped split, and the closed slot and the adaptive clamping head are axially slidably clamped.

4. A railway car brake cylinder piston position detection device as defined in claim 3 wherein, The arc-shaped split is a hollow shell structure, and the micro-motion switch, the battery, the self-generating module and the wireless communication module are arranged in the inner cavity of the hollow shell.

5. A railway car brake cylinder piston position detection device as defined in claim 4 wherein, The arc-shaped split has two arc-shaped splits, and the battery and the wireless communication module are arranged in one arc-shaped split, and the micro-motion switch is arranged in the other arc-shaped split.

6. A railway car brake cylinder piston position detection device as defined in claim 5 wherein, One of the two arc-shaped splits The arc-shaped split is provided with a radial threaded hole penetrating through the arc-shaped split, and a jacking screw is arranged in the threaded hole to jackingly fix the ring-shaped support on the brake cylinder piston rod.

7. A railway car brake cylinder piston position detection device as defined in claim 6 wherein, The jacking screw is arranged on the arc-shaped split where the micro-motion switch is located.

8. A railway car brake cylinder piston position detection device as defined in claim 7 wherein, The micro-motion switch is located at the middle position of the arc-shaped split, and the jacking screw has two jacking screws which are symmetrically arranged on the circumferential two sides of the micro-motion switch.

9. A railway wagon brake cylinder piston position detection device according to any one of claims 4 to 8, characterised in that, The hollow arc-shaped split comprises an arc-shaped slot shell with an axial opening and a cover arranged at the slot opening of the arc-shaped slot shell, and the switch contacts of the micro-motion switch extend from the slot bottom.

10. A railway car brake cylinder piston position detection device as defined in claim 9 wherein, The end portion slot wall of one of the two arc-shaped slot shells which are spliced with each other is provided with a T-shaped clamping slot with a T-shaped axial section, the T-shaped clamping slot constitutes the closed slot, and the end portion slot wall of the other arc-shaped slot shell is provided with a T-shaped clamping head, the T-shaped clamping head constitutes the adaptive clamping head of the T-shaped clamping slot, and the T-shaped clamping head and the T-shaped clamping slot are axially slidably clamped.

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