CN211784241U - Lower-driving type integral dropper fatigue test device - Google Patents
Lower-driving type integral dropper fatigue test device Download PDFInfo
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- CN211784241U CN211784241U CN202020530558.1U CN202020530558U CN211784241U CN 211784241 U CN211784241 U CN 211784241U CN 202020530558 U CN202020530558 U CN 202020530558U CN 211784241 U CN211784241 U CN 211784241U
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Abstract
A lower driving type integral dropper fatigue test device belongs to the field of rail transit, and is a device for carrying out integral dropper fatigue test of an electrified railway, and comprises a mechanical frame system, a driving system and a spring buffer system; the mechanical frame system comprises a base (1), a guide rod (2), a displacement sensor (3), a limiting lock (4), a limiting sensor (5), a lower moving plate (6), an upper fixing plate (7) and a lower base (8); the driving system is a motor (9); the spring buffer system is a spring buffer base (10) and comprises a compression spring (11), a connecting guide rod (12), a nut (13), a fixing rod (14), a fixing plate (15), a rubber pad (16), a force sensor (17), an upper connecting base (18), a carrier cable clamp connecting base (19) and an upper fixing screw (20). The integral dropper (24) is arranged on the lower moving plate (6) and the upper fixing plate (7), and is driven by the motor (9) to move up and down to realize fatigue test.
Description
Technical Field
The utility model belongs to the rail transit field is applicable to the vibration fatigue test who carries out the whole dropper of electronic railway (containing high-speed railway) contact net.
Background
The integral dropper is an important component of an overhead contact system of an electrified railway and a high-speed railway, one end of the integral dropper is connected with a carrier cable, and the other end of the integral dropper is connected with a contact line; the suspension and current-carrying function is mainly realized in the running process of the train, and the suspension and current-carrying function plays an important role in ensuring the stable and reliable running of the train.
In the actual service process of the integral dropper, when a train passes by, the integral dropper is bent under the lifting action of a pantograph at the top of the train; after the train passes through, the integral suspension string quickly drops downwards under the action of gravity, and at the moment, the integral suspension string bears the impact action of dynamic force. Therefore, the whole dropper bears the double functions of repeated bending and dynamic impact force in the actual service process.
At present, vibration fatigue tests of integral dropper of electrified railway and high-speed railway are mainly based on part 7 of TB/T2075.7-2010 electrified railway contact network parts: the method comprises the steps of carrying out an integral dropper and a dropper wire clamp, and carrying out a vibration test and then a pull-pull fatigue test in the test process. Research shows that the vibration and fatigue processes of the integral dropper are divided into two parts for testing by the conventional testing method, the repeated bending process of the integral dropper in the actual service process is not considered, and the testing result is different from the field application status.
Aiming at the defects existing in the existing integral dropper test process, in order to truly reflect the service process of the integral dropper in the practical application process, a test method which comprehensively considers the repeated bending, vibration and fatigue of the integral dropper is provided, a lower driving type integral dropper fatigue test device is designed according to the test method, and the test device can be used for simulating the vibration fatigue test of the integral dropper in the field service process.
Disclosure of Invention
The utility model discloses a technique that will solve is to the vibration fatigue test of the whole dropper of electrified railway flexible contact net, has designed a whole dropper fatigue test device of lower drive formula.
The utility model discloses an adopted technical scheme is: a lower driving type integral dropper fatigue test device is composed of a mechanical frame system, a driving system and a spring buffer system; the mechanical frame system is mainly used for connecting and fixing the test device and comprises a base (1), a guide rod (2), a displacement sensor (3), a limiting lock (4), a limiting sensor (5), a lower moving plate (6), an upper fixing plate (7) and a lower base (8); the driving system is mainly used for driving the test device to move and consists of a motor (9); the spring buffer system mainly realizes the buffering of dynamic force in the test process, and mainly comprises a spring buffer base (10) which is composed of a compression spring (11), a connecting guide rod (12), a nut (13), a fixing rod (14), a fixing plate (15), a rubber pad (16), a force sensor (17), an upper connecting base (18), a bearing cable clamp connecting base (19) and an upper fixing screw (20).
In the fatigue test process, the integral dropper (24) is arranged on the lower moving plate (6) and the upper fixing plate (7) in the mechanical frame system and is driven to move up and down by a motor (9) in the driving system, so that the vibration fatigue test process of the integral dropper (24) is realized, and the dynamic stress of the integral dropper (24) in the test process is relieved by a spring buffer system.
4 guide rods (2) in the mechanical frame system are fixed on the base (1), and 16 limiting locks (4), the lower moving plate (6) and the upper fixing plate (7) are sequentially arranged on the guide rods (2).
The lower base (8) in the mechanical frame system comprises a lower connecting base (21), a contact wire clamp connecting base (22) and a lower fastening screw (23).
The lower base (8) is fixed on the lower moving plate (7) through the lower connecting base (21), the contact wire clamp connecting base (22) is installed on the lower connecting base (21) through the inverted T-shaped sliding groove in the lower connecting base (21) and then fixed through the lower fastening screw (23), and the contact wire clamp connecting base (22) is guaranteed not to rotate and move in a translation mode.
The spring buffer system in the fatigue test device is mainly a spring buffer base (10), and the spring buffer base (10) is fixed on the upper fixing plate (7).
A compression spring (11) in a spring buffer base (10) is installed on a connecting guide rod (12) through a nut (13), and the connecting guide rod (12) is fixed on a fixing plate (15) connected by a fixing rod (14). Connect guide arm (12) below and be connected with rubber pad (16), force sensor (17) in proper order, rubber pad (16) can be used for buffering compression spring (11) load in the compression process, avoids force sensor (17) and fixed plate (15) direct collision.
An upper connecting base (18) is installed below the force sensor (17) through a nut, and a messenger wire clamp connecting base (19) is installed in the upper connecting base (18) through an inverted T-shaped sliding groove and is fixed through an upper fastening screw (20), so that the messenger wire clamp connecting base (19) is prevented from rotating and translating.
The spring buffer system in the fatigue test device mainly relieves the force value of the integral dropper (24) in the up-and-down motion process of the integral dropper (24) through a compression spring (11) in the spring buffer base (10), and tests the force of the integral dropper (24) in real time through a force sensor (17) in the spring buffer base (10).
The limiting locks (4) in the mechanical frame system are respectively fixed on guide rods on the upper side and the lower side of the lower moving plate (6) and the upper fixing plate (7), and limiting sensors (5) are mounted on the limiting locks (4) and can monitor the positions of the lower moving plate (6) and the upper fixing plate (7) in real time and ensure that the lower moving plate (6) cannot exceed the upper limiting position and the lower limiting position when the movable integral dropper (24) is driven to move up and down.
An integral dropper (24) in the testing device is respectively connected with a contact wire clamp connecting base (22) in a lower base (8) and a carrier cable clamp connecting base (19) in a spring buffering base (10) through a contact wire connecting clamp (25) and a carrier cable connecting clamp (26), and finally one end of the integral dropper (24) is connected with the lower movable plate (6) and the other end of the integral dropper is connected with the upper fixed plate (7).
One end of a displacement sensor (3) and one end of a motor (9) in the fatigue test device are fixed on the base (1), and the other end of the displacement sensor is connected to the lower moving plate (6); the testing device drives the lower moving plate (6) to move up and down through a motor (9) in the driving system, and monitors the displacement of the lower moving plate (6) through the displacement sensor (3), so that the integral hanger (24) is controlled to move up and down.
The utility model discloses a have following characteristics:
a lower driving type integral dropper fatigue test device mainly comprises a mechanical frame system, a driving system and a spring buffer system, wherein the mechanical frame system consists of a base (1), a guide rod (2), a displacement sensor (3), a limit lock (4), a limit sensor (5), a lower moving plate (6), an upper fixed plate (7), a lower base (8) and other connecting and fixing parts; the driving system is mainly driven by a motor (9); the spring buffer system mainly buffers dynamic force through a spring buffer base (10) and comprises a compression spring (11), a connecting guide rod (12), a nut (13), a fixing rod (14), a fixing plate (15), a rubber pad (16), a force sensor (17), an upper connecting base (18), a carrier cable clamp connecting base (19) and an upper fixing screw (20).
The lower end of an integral dropper (24) in the testing device is connected with a contact wire clamp connecting base (22) in a lower base (8) through a carrier cable connecting clamp (26), the contact wire clamp connecting base (22) is installed in an inverted T-shaped sliding groove of a lower connecting base (21) and is fixed through a lower fastening screw (23), and the lower end of the integral dropper (24) is prevented from translating and rotating.
The upper end of an integral dropper (24) in the test device is connected to a carrier cable wire clamp connecting base (19) in the spring buffer base (10) through a contact wire connecting clamp (25); the carrier cable wire clamp connecting base (19) is connected to the inverted T-shaped sliding groove of the upper connecting base (18) and is fixed through an upper fastening screw (20), so that the upper end of the integral dropper (24) is prevented from translating and rotating.
A spring buffer system in the test device is connected with the upper end of the integral dropper (24) through a spring buffer base (10), the magnitude of the dynamic impact force value of the integral dropper (24) can be relieved through a compression spring (11) in the vibration fatigue test process, and the stress of the integral dropper (24) is monitored in real time through a force sensor (17).
A compression spring (11) in a spring buffer base (10) is installed on a connecting guide rod (12) through a nut (13), and the connecting guide rod (12) is fixed on a fixing plate (15) connected by a fixing rod (14). Connect guide arm (12) below and be connected with rubber pad (16), force sensor (17) in proper order, rubber pad (16) can be used for buffering compression spring (11) load in the compression process, avoids force sensor (17) and fixed plate (15) direct collision.
Guide rods on the upper side and the lower side of a lower moving plate (6) and an upper fixing plate (7) in the mechanical frame system are respectively provided with 4 limiting locks (4), and limiting sensors (5) are arranged on the limiting locks (4), so that the positions of the lower moving plate (6) and the upper fixing plate (7) can be monitored in real time, and the lower moving plate (6) can be ensured not to exceed the upper and lower limiting positions when the movable integral dropper (24) is driven to move up and down.
One end of a motor (9) in the driving system is fixed on the base (1), the other end of the motor is connected to the lower moving plate (6), the testing device drives the lower moving plate (6) connected with the lower end of the integral dropper (24) to move up and down through the motor (9), so that the integral dropper is driven to repeatedly bend and vibrate for fatigue, the integral dropper (24) bears dynamic force, and the vibration fatigue process of the integral dropper (24) in the actual service process is simulated.
One end of a displacement sensor (3) in the test device is fixed on the base (1), the other end of the displacement sensor is connected to the lower moving plate (6), and the displacement of the integral dropper (24) is monitored in real time through the displacement sensor (3).
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only one embodiment of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is the embodiment of the utility model provides a whole schematic diagram of the whole dropper fatigue test device of lower drive formula, in the figure, base 1, guide arm 2, displacement sensor 3, spacing lock 4, spacing sensor 5, move down movable plate 6, upper fixed plate 7, lower base 8, motor 9, spring buffering base 10, whole dropper 24, contact wire connecting clamp 25, carrier cable connecting clamp 26.
Fig. 2 is the component schematic diagram of the spring buffer system of the testing apparatus provided by the embodiment of the present invention, in the figure, the compression spring 11, the connecting guide rod 12, the nut 13, the fixing rod 14, the fixing plate 15, the rubber pad 16, the force sensor 17, the upper connecting base 18, the force-bearing cable clamp connecting base 19, and the upper fastening screw 20.
Fig. 3 is a schematic diagram of the lower base of the testing apparatus provided by the embodiment of the present invention, wherein the lower base 21, the contact wire clamp connection base 22, and the lower fastening screw 23 are connected to the lower end of the whole dropper.
Detailed Description
A lower-driving type integral dropper fatigue test device is shown in figure 1 and comprises a base (1), a guide rod (2), a displacement sensor (3), a limiting lock (4), a limiting sensor (5), a lower moving plate (6), an upper fixing plate (7), a lower base (8), a motor (9), a spring buffering base (10), an integral dropper (24), a contact wire connecting wire clamp (25) and a carrier cable connecting wire clamp (26).
The schematic composition diagram of the spring buffer system is shown in fig. 2, and the spring buffer system comprises a compression spring (11), a connecting guide rod (12), a nut (13), a fixing rod (14), a fixing plate (15), a rubber pad (16), a force sensor (17), an upper connecting base (18), a messenger wire clamp connecting base (19) and an upper fastening screw (20).
The schematic composition diagram of the lower base connected with the lower end of the integral dropper is shown in fig. 3, and the lower base comprises a lower connecting base (21), a contact wire clamp connecting base (22) and a lower fastening screw (23).
A lower driving type integral dropper fatigue test device mainly comprises a mechanical frame system, a driving system and a spring buffer system; the mechanical frame system consists of a base (1), a guide rod (2), a displacement sensor (3), a limiting lock (4), a limiting sensor (5), a lower moving plate (6), an upper fixing plate (7) and a lower base (8); the driving system consists of a motor (9); the spring buffer system is a spring buffer base (10) and consists of a compression spring (11), a connecting guide rod (12), a nut (13), a fixed rod (14), a fixed plate (15), a rubber pad (16), a force sensor (17), an upper connecting base (18), a messenger wire clamp connecting base (19) and an upper fixing screw (20). The lower base (8) consists of a lower connecting base (21), a contact wire clamp connecting base (22) and a lower fastening screw (23).
4 guide rods (2) in a mechanical frame system of the testing device are fixed at four corners of a base (1), and 16 limiting locks (4), a lower moving plate (6) and an upper fixing plate (7) are sequentially arranged on the guide rods (2). Wherein, 8 limit locks (4) are respectively arranged on the upper side and the lower side of the lower moving plate (6) and the upper fixing plate (7), and each limit lock (4) is provided with a limit sensor (5).
A motor (9) in a driving system of the testing device is arranged on a base (1) and a lower moving plate (6). Meanwhile, the displacement sensor (3) is also arranged on the base (1) and the lower moving plate (6). The lower moving plate (6) is driven to move up and down by the motor (9), and the displacement of the lower moving plate (6) is monitored by the displacement sensor (3).
A lower base (8) in the mechanical frame system is fixed on a lower moving plate (7) through a lower connecting base (21), and a contact wire clamp connecting base (22) is installed on the lower connecting base (21) through an inverted T-shaped sliding groove in the lower connecting base (21) and then fixed through a lower fastening screw (23), so that the contact wire clamp connecting base (22) is guaranteed against rotating and translating.
A spring buffer base (10) in a spring buffer system of the fatigue test device is fixed on an upper fixing plate (7). A compression spring (11) in a spring buffer base (10) is installed on a connecting guide rod (12) through a nut (13), and the connecting guide rod (12) is fixed on a fixing plate (15) connected by a fixing rod (14). Connect rubber pad (16), force sensor (17) in proper order below connecting guide arm (12), rubber pad (16) can be used for buffering compression spring (11) load in the compression process, avoids force sensor (17) and fixed plate (15) direct collision. The lower part of the force sensor (17) is provided with an upper connecting base (18) through a nut, and a messenger wire clamp connecting base (19) is arranged in the upper connecting base (18) through an inverted T-shaped sliding groove and is fixed through an upper fastening screw (20), so that the messenger wire clamp connecting base (19) is prevented from rotating and translating.
An integral dropper (24) in the testing device is respectively connected with a contact wire clamp connecting base (22) in a lower base (8) and a carrier cable clamp connecting base (19) in a spring buffering base (10) through a contact wire connecting clamp (25) and a carrier cable connecting clamp (26), and finally one end of the integral dropper (24) is connected with the lower movable plate (6) and the other end of the integral dropper is connected with the upper fixed plate (7).
In the test process, the position of the upper fixing plate (7) on the guide rod (2) is adjusted according to the length of the integral dropper (24), and the upper fixing plate (7) is fixed by using 8 limiting locks (4) on the upper side and the lower side of the upper fixing plate (7). And adjusting the position of the lower moving plate (6) and the positions of 8 limiting locks (4) on the upper side and the lower side of the lower moving plate (6) according to the test parameters.
During testing, the motor (9) is started to drive the lower moving plate (6) and the displacement sensor (3) to move up and down together, so that the integral dropper (24) is driven to move up and down, and the vibration fatigue process and the dynamic stress of the integral dropper (24) in the actual service process are simulated.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (2)
1. A lower driving type integral dropper fatigue test device is characterized by comprising a dropper system, a mechanical frame system, a driving system and a spring buffer system; the mechanical frame system comprises a base (1), a guide rod (2), a displacement sensor (3), a limiting lock (4), a limiting sensor (5), a lower moving plate (6), an upper fixing plate (7) and a lower base (8); the drive system comprises an electric motor (9);
a plurality of guide rods (2) in the mechanical frame system are fixed on a base (1), and a plurality of limiting locks (4), a lower moving plate (6) and an upper fixing plate (7) are arranged on the guide rods (2);
the lower base (8) in the mechanical frame system comprises a lower connecting base (21), a contact wire clamp connecting base (22) and a lower fastening screw (23);
the lower base (8) is fixed on the lower moving plate (6) through a lower connecting base (21), and the contact wire clamp connecting base (22) is installed on the lower connecting base (21) through an inverted T-shaped sliding groove in the lower connecting base (21) and then fixed through a lower fastening screw (23);
the spring buffer system is a spring buffer base (10), and the spring buffer base (10) is fixed on the upper fixing plate (7);
an integral dropper (24) in the dropper system is respectively connected with a contact wire clamp connecting base (22) in a lower base (8) and a carrier cable clamp connecting base (19) in a spring buffering base (10) through a contact wire connecting clamp (25) and a carrier cable connecting clamp (26), and finally, one end of the integral dropper (24) is connected with a lower movable plate (6), and the other end of the integral dropper (24) is connected with an upper fixed plate (7);
one end of the displacement sensor (3) and one end of the motor (9) are fixed on the base (1), and the other end is connected on the lower moving plate (6).
2. The lower driving type integrated dropper fatigue testing apparatus according to claim 1, wherein: the spring buffer base (10) consists of a compression spring (11), a connecting guide rod (12), a nut (13), a fixed rod (14), a fixed plate (15), a rubber pad (16), a force sensor (17), an upper connecting base (18), a bearing cable clamp connecting base (19) and an upper fixing screw (20);
a compression spring (11) in the spring buffer base (10) is arranged on a connecting guide rod (12) through a nut (13), and the connecting guide rod (12) is fixed on a fixing plate (15) connected by a fixing rod (14); a rubber pad (16) and a force sensor (17) are sequentially connected below the connecting guide rod (12);
an upper connecting base (18) is arranged below the force sensor (17) through a nut, and a carrier cable clamp connecting base (19) is arranged in the upper connecting base (18) through a sliding groove and fixed through an upper fastening screw (20).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020530558.1U CN211784241U (en) | 2020-04-13 | 2020-04-13 | Lower-driving type integral dropper fatigue test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020530558.1U CN211784241U (en) | 2020-04-13 | 2020-04-13 | Lower-driving type integral dropper fatigue test device |
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| CN211784241U true CN211784241U (en) | 2020-10-27 |
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| CN202020530558.1U Active CN211784241U (en) | 2020-04-13 | 2020-04-13 | Lower-driving type integral dropper fatigue test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272409A (en) * | 2020-04-13 | 2020-06-12 | 中国铁道科学研究院集团有限公司标准计量研究所 | Lower-driving type integral dropper fatigue test device |
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- 2020-04-13 CN CN202020530558.1U patent/CN211784241U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272409A (en) * | 2020-04-13 | 2020-06-12 | 中国铁道科学研究院集团有限公司标准计量研究所 | Lower-driving type integral dropper fatigue test device |
| CN111272409B (en) * | 2020-04-13 | 2024-05-17 | 中国铁道科学研究院集团有限公司 | Lower driving type integral hanger fatigue test device |
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Effective date of registration: 20211129 Address after: 100081 Beijing city Haidian District Daliushu Road No. 2 Patentee after: STANDARD MEASUREMENT INSTITUTE OF CHINA ACADEMY OF RAILWAY SCIENCE Corp.,Ltd. Patentee after: CHINA RAILWAY TEST & CERTIFICATION CENTER Co.,Ltd. Patentee after: CHINA ACADEMY OF RAILWAY SCIENCES Corp.,Ltd. Address before: 100081 Beijing city Haidian District Daliushu Road No. 2 Patentee before: STANDARD MEASUREMENT INSTITUTE OF CHINA ACADEMY OF RAILWAY SCIENCE Corp.,Ltd. Patentee before: China railway inspection and Certification Center Co., Ltd |