CN213337846U - Mechanism for testing pantograph lifting time - Google Patents
Mechanism for testing pantograph lifting time Download PDFInfo
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- CN213337846U CN213337846U CN202022216407.1U CN202022216407U CN213337846U CN 213337846 U CN213337846 U CN 213337846U CN 202022216407 U CN202022216407 U CN 202022216407U CN 213337846 U CN213337846 U CN 213337846U
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Abstract
The utility model relates to a pantograph lifting time testing mechanism, which comprises a pressure detection device, a displacement detection device and a timing device; the pressure detection device is used for detecting whether pressure change occurs at a pressure interface of the pneumatic device, and the pressure interface is communicated with a pantograph lifting pipeline of the pantograph; the displacement detection device is used for detecting whether the pantograph reaches a preset height; the timing device is used for recording the time length from the pressure change at the pressure interface to the time when the pantograph reaches the preset height. The pantograph lifting time can be accurately measured by the aid of the measuring mechanism, and measuring accuracy is guaranteed.
Description
Technical Field
The utility model relates to a test technical field, concretely relates to pantograph lifting time's accredited testing organization.
Background
The time for lifting the pantograph is the time required for lifting the pantograph from the pantograph position to the highest working height and falling from the highest working height to the pantograph position when the rated air pressure is applied to the air cylinder, and the starting point of time calculation is the moment when the pantograph valve (under the rated pressure) at the pressure interface of the pneumatic device is subjected to pressure loss. If the pantograph rising time is greater than the design value, the arcing discharge phenomenon can be caused in the pantograph rising process, the reason is that the pantograph rising time is too long, the speed is too slow in the pantograph approaching contact network process, the contact network is electrified at high voltage, air can be punctured, the arcing discharge phenomenon can occur with the pantograph, if the pantograph rising time is too short, impact can be caused on the contact network, if the pantograph falling time is less than the design value, impact can be caused on a pantograph bottom frame, and if the pantograph falling time is greater than the design value, the arcing discharge phenomenon can be caused in the pantograph falling process and the contact network. Therefore, it is important to accurately measure the pantograph lifting time of the pantograph.
At present, when the pantograph lifting time of a pantograph is measured, timing is started after the pantograph lifting or descending action is observed, the moment of voltage loss cannot be estimated by the method, the pantograph can only be observed to start testing after the action, and the accuracy of a testing result is low.
Therefore, how to accurately measure the pantograph lifting time and ensure the measurement accuracy is a technical problem to be solved by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pantograph lift bow time's accredited testing organization can accurate measurement pantograph lift bow time, guarantees to measure the accuracy.
In order to solve the technical problem, the utility model provides a pantograph lifting time testing mechanism, which comprises a pressure detection device, a displacement detection device and a timing device; the pressure detection device is used for detecting whether pressure change occurs at a pressure interface of the pneumatic device, and the pressure interface is communicated with a pantograph lifting pipeline of the pantograph; the displacement detection device is used for detecting whether the pantograph reaches a preset height; the timing device is used for recording the time length from the pressure change at the pressure interface to the time when the pantograph reaches the preset height.
When the pantograph rises, the pneumatic device supplies air through the pantograph rising pipeline to enable the pantograph to rise at the same moment, the pressure detection device can detect that the pressure at the pressure interface changes, the timing device starts timing, when the displacement detection device detects that the pantograph rises to a preset height, the timing is stopped, and the duration recorded by the timing device is the pantograph rising time. When the pantograph falls, the pneumatic device stops supplying air, the pressure detection device can detect that the pressure at the pressure interface changes, the timing device starts timing, when the displacement detection device detects that the pantograph falls to the preset height, the timing stops, and the length of time recorded by the timing device is the pantograph falling time.
That is to say, the timing device starts at the moment when the pressure at the pressure interface of the pneumatic device changes (i.e. the moment when the pressure is lost), and ends after the pantograph is lifted to a preset height (including a pantograph lifting position (highest point) and a pantograph lowering position (lowest point)), and the start-stop time is not completely calculated by detecting the change of the pantograph displacement, so that the accuracy of the pantograph lifting time test can be improved. And the testing mechanism has simple structure, small volume and convenient carrying, and is convenient to disassemble, assemble and carry out testing operation.
Preferably, the pressure detection device further comprises a three-way joint, and the three-way joint is respectively communicated with the pressure interface, the pantograph lifting pipeline and the pressure detection device.
Preferably, the pressure detection device includes the trachea and locates tracheal pressure sensor, tracheal one end shutoff, the other end with three way connection intercommunication, pressure sensor can detect the intratracheal pressure variation.
Preferably, the pressure sensor is arranged at one end of the air pipe, which is far away from the three-way joint, and blocks the air pipe.
Preferably, the pantograph control device further includes a control device connected to the pressure detection device, the displacement detection device, and the timing device, respectively, and configured to receive pressure change information transmitted from the pressure detection device, pantograph position information transmitted from the displacement detection device, and time information transmitted from the timing device.
Preferably, the timing device is integrated into the control device.
Preferably, the pantograph control device further comprises a display screen, wherein the display screen is connected with the control device and used for displaying the pressure change information, the pantograph position information and the time information.
Preferably, the displacement detecting device is a laser displacement sensor.
Drawings
Fig. 1 is a schematic structural diagram of a mechanism for testing pantograph lifting time according to an embodiment of the present invention.
In fig. 1, the reference numerals are illustrated as follows:
1-pressure detection device, 11-pressure sensor, 12-trachea; 2-displacement detection means; 3-a timing device; 4-a three-way joint; 5-a control device; 6-a pneumatic device; 7-liter bow pipeline; 8-connecting lines.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a pantograph lifting time testing mechanism according to an embodiment of the present invention.
The embodiment of the utility model provides a pantograph lifting time's accredited testing organization, as shown in fig. 1, this accredited testing organization includes pressure measurement device 1, displacement detection device 2 and timing device 3, wherein, pressure measurement device 1 is used for detecting whether pressure change takes place at pneumatic means 6's pressure interface, pneumatic means 6's pressure interface and rising bow pipeline 7 intercommunication, be used for the air feed, when the pressure increase at pressure interface, the arch that rises is shown to begin, when the pressure of pressure interface reduces in the twinkling of an eye, then no longer the air feed, then the arch that falls is shown to begin; the displacement detection device 2 is used for detecting whether the position of the pantograph reaches a preset height; the timing device 3 is used for recording the time length from the pressure change at the pressure interface to the time when the pantograph reaches the preset height.
In detail, when the pantograph is lifted, the pneumatic device 6 supplies air through the pantograph lifting pipeline 7 so that the pantograph is lifted at one moment, the pressure detection device 1 can detect that the pressure at the pressure interface changes, the timing device 3 starts timing, when the displacement detection device 2 detects that the pantograph is lifted to a preset height, the timing is stopped, and the duration recorded by the timing device 3 is pantograph lifting time. When the pantograph falls, the pneumatic device 6 stops supplying air, the pressure detection device 1 can detect that the pressure at the pressure interface changes, the timing device 3 starts timing, when the displacement detection device 2 detects that the pantograph falls to a preset height, the timing stops, and the length of time recorded by the timing device 3 is the pantograph falling time.
That is, the timing device 3 in this embodiment starts at a moment when the pressure at the pressure interface of the pneumatic device 6 changes (i.e., at a moment when the pressure is lost), and ends after the pantograph is lifted to a preset height (including a pantograph lifting position (highest point) and a pantograph lowering position (lowest point)), and the start-stop time is not completely calculated by detecting the change in the displacement of the pantograph, so that the accuracy of the pantograph lifting time test can be improved. And the testing mechanism has simple structure, small volume and convenient carrying, and is convenient to disassemble, assemble and carry out testing operation.
In the above embodiment, the testing mechanism further includes a three-way joint 4, and the three-way joint 4 is respectively communicated with the pressure interface of the pneumatic device 6, the pantograph lifting pipeline 7 of the pantograph, and the pressure detection device 1. When the pneumatic device 6 starts to supply air, the air can reach the pressure detection device 1 instantly, namely, the pressure detection device 1 can detect the pressure change from the moment when the air supply starts, and the timing accuracy is improved. Of course, in this embodiment, the pressure detection device 1 may also be disposed in the pantograph ascending pipeline 7 to detect the pressure change in the pantograph ascending pipeline 7, and the three-way joint 4 facilitates the arrangement of the pressure detection device 1, does not need to modify the original pantograph ascending pipeline 7, does not affect the ventilation of the pantograph ascending pipeline 7 to the pantograph, and has good flexibility in use.
Further, the pressure detection device 1 includes an air pipe 12 and a pressure sensor 11 disposed on the air pipe 12, wherein one end of the air pipe 12 is sealed, the other end is communicated with the three-way joint 4, and the pressure sensor 11 can detect the pressure change in the air pipe 12. Wherein, the one end of trachea 12 is the shutoff, can avoid gaseous this trachea 12 to spill, guarantees not to cause the influence to the lift of pantograph. The pressure sensor 11 detects the pressure in the air pipe 12, so that the pressure loss condition of the pressure interface of the pneumatic device 6 is judged, and the accuracy of pressure detection is ensured. The air tube 12 is provided to facilitate the arrangement of the pressure sensor 11.
Further, pressure sensor 11 locates trachea 12 and keeps away from the one end of three way connection 4 and this trachea 12 of shutoff, perhaps, also can directly set up this trachea 12 into the structure that one end is sealed, and the tip through this trachea 12 of pressure sensor 11 shutoff, can be convenient for this pressure sensor 11 the installation and be convenient for drawing materials of trachea 12, simplify the manufacture craft.
In the above embodiment, the testing mechanism includes a control device 5 (specifically, a single chip microcomputer or the like), and the control device 5 is connected to the pressure detection device 1, the displacement detection device 2, and the time counting device 3, and is configured to receive pressure change information transmitted from the pressure detection device 1, pantograph position information transmitted from the displacement detection device 2, and time information transmitted from the time counting device 3. That is, the test mechanism provided in the present embodiment controls the connection of the pressure detection device 1, the displacement detection device 2, and the timer device 3 through the control device 5.
Alternatively, in the present embodiment, the timer device 3 may be a manual timer (e.g., a stopwatch), and the pantograph ascending/descending time may be known by starting the timer when the pressure detection device 1 detects a change in pressure and stopping the timer when the displacement detection device 2 detects that the pantograph has ascended to a predetermined height. When the timing device 3 is electrically controlled by the control device 5, human errors can be avoided, and the test accuracy is further improved.
Furthermore, the timing device 3 is integrated in the control device 5, of course, the timing device 3 and the control device 5 can be separately arranged, and when the timing device 3 and the control device 5 are integrated, the whole structure of the testing mechanism can be simplified, the size can be reduced, and the carrying is convenient.
Further, this accredited testing organization still includes the display screen, and this display screen is connected with above-mentioned controlling means 5 for show pressure change information, pantograph positional information and time information, that is to say, the pantograph is at the lift in-process, and the high height etc. of pressure information and flashlight at each moment all can show at this display screen, are convenient for carry out all-round observation to the lift process of pantograph, thereby can further improve the test accuracy, and when breaking down, are convenient for investigate the reason.
Specifically, the connection modes between the control device 5 and the pressure detection device 1, the displacement detection device 2, the timing device 3, and the display screen are not limited, for example, the connection mode may be through the connection line 8 or through any one of wireless connections such as bluetooth and WiFi to achieve information transmission, and the specific connection mode to achieve information transmission is the prior art well known to those skilled in the art, and is not described herein again for saving space. The connection modes between the control device 5 and the above four devices may be the same or different, and may be specifically set according to actual conditions. In addition, how to connect the components shown in fig. 1, for example, how to communicate the three-way joint 4 with the pressure interface of the pneumatic device 6, the pantograph lifting pipeline 7 of the pantograph and the pressure detection device 1, respectively, is well known to those skilled in the art and will not be described herein.
In the above embodiment, the displacement detecting device 2 is a laser displacement sensor, or in the present embodiment, the displacement detecting device 2 may be configured to include two triggering members, one triggering member is disposed at the highest point of the pantograph, and the other triggering member is disposed at the lowest point of the pantograph, and the moment when the pantograph is raised or lowered to contact with the triggering members may be used as the timing end point. And when setting up displacement detection device 2 as laser displacement sensor, it need not to take place direct contact with the pantograph to be convenient for arrange the installation to this displacement detection device 2.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A pantograph lifting time testing mechanism is characterized by comprising a pressure detection device (1), a displacement detection device (2) and a timing device (3);
the pressure detection device (1) is used for detecting whether pressure change occurs at a pressure interface of the pneumatic device (6), and the pressure interface is communicated with a pantograph lifting pipeline (7) of the pantograph;
the displacement detection device (2) is used for detecting whether the pantograph reaches a preset height;
the timing device (3) is used for recording the time length from the pressure change at the pressure interface to the time when the pantograph reaches the preset height.
2. Pantograph lifting time test mechanism according to claim 1, characterized in that it further comprises a three-way joint (4), said three-way joint (4) being in communication with said pressure interface, said pantograph lifting line (7) and said pressure detection device (1), respectively.
3. Mechanism according to claim 2, wherein said pressure detection device (1) comprises an air tube (12) and a pressure sensor (11) arranged in said air tube (12), one end of said air tube (12) is sealed and the other end is connected to said tee (4), said pressure sensor (11) being able to detect the pressure change in said air tube (12).
4. Pantograph time testing mechanism according to claim 3, characterized in that said pressure sensor (11) is arranged at the end of said air pipe (12) remote from said three-way connection (4) and blocks said air pipe (12).
5. The pantograph lifting/lowering time measurement mechanism according to claim 2, further comprising a control device (5), wherein the control device (5) is connected to the pressure detection device (1), the displacement detection device (2), and the timing device (3), and is configured to receive pressure change information transmitted from the pressure detection device (1), pantograph position information transmitted from the displacement detection device (2), and time information transmitted from the timing device (3).
6. Pantograph timing test mechanism according to claim 5, characterized in that the timing device (3) is integrated in the control device (5).
7. Pantograph lifting time testing mechanism according to claim 5, characterized in that it further comprises a display screen connected to said control device (5) for displaying said pressure variation information, said pantograph position information and said time information.
8. Pantograph timing test mechanism according to claim 1, characterized in that the displacement detection device (2) is a laser displacement sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022216407.1U CN213337846U (en) | 2020-09-30 | 2020-09-30 | Mechanism for testing pantograph lifting time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022216407.1U CN213337846U (en) | 2020-09-30 | 2020-09-30 | Mechanism for testing pantograph lifting time |
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| Publication Number | Publication Date |
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| CN213337846U true CN213337846U (en) | 2021-06-01 |
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| CN202022216407.1U Active CN213337846U (en) | 2020-09-30 | 2020-09-30 | Mechanism for testing pantograph lifting time |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114815569A (en) * | 2022-03-24 | 2022-07-29 | 广东交通职业技术学院 | Pantograph lifting time detection system, pantograph lifting time control method and storage medium |
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2020
- 2020-09-30 CN CN202022216407.1U patent/CN213337846U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114815569A (en) * | 2022-03-24 | 2022-07-29 | 广东交通职业技术学院 | Pantograph lifting time detection system, pantograph lifting time control method and storage medium |
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