CN112034217B - Traction power supply system electric energy quality testing device - Google Patents
Traction power supply system electric energy quality testing device Download PDFInfo
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- CN112034217B CN112034217B CN202010989720.0A CN202010989720A CN112034217B CN 112034217 B CN112034217 B CN 112034217B CN 202010989720 A CN202010989720 A CN 202010989720A CN 112034217 B CN112034217 B CN 112034217B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The application provides a traction power supply system electric energy quality testing device, wherein a first fixing frame and a second fixing frame are arranged outside a body of the testing device; the first fixing frame is provided with a first accommodating groove; a first hinging block and a second hinging block are arranged in the first accommodating groove, the first hinging block is connected with a first connecting rod through a rotating shaft, and the second hinging block is connected with a second connecting rod through the rotating shaft; the second fixing frame is provided with a second accommodating groove; a third hinging block and a fourth hinging block are arranged in the second containing groove, the third hinging block is connected with a third connecting rod through a rotating shaft, and the fourth hinging block is connected with a fourth connecting rod through the rotating shaft; the free ends of the four connecting rods are on the same plane and are not on the same straight line after the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod rotate to the limit angle around the rotating shaft so as to form a supporting structure for supporting the testing device. The device in the scheme has a self-supporting function, provides convenience for a user, and can effectively ensure the testing efficiency.
Description
Technical Field
The application relates to the technical field of traction power supply systems, in particular to a device for testing the power quality of a traction power supply system.
Background
The traction power supply system is used for converting alternating voltage into direct current 1500V or direct current 750V voltage through voltage reduction and rectification to provide traction power supply for the electric train.
Traction power supply systems need to detect electric energy frequently, so we can use an electric energy quality testing device. However, most of the traction power supply system is installed outdoors, which results in that a user needs to additionally carry a table board and other tools for placing the testing device when carrying the device outdoors, which not only brings great burden to the tester, but also affects the testing efficiency.
Disclosure of Invention
The application aims to provide a traction power supply system electric energy quality testing device so as to solve the problems of poor convenience and low testing efficiency of the existing testing device.
To this end, some embodiments of the present application provide a power quality testing device for a traction power supply system: a first fixing frame and a second fixing frame are arranged outside the body of the testing device;
a first accommodating groove is formed in the first fixing frame; a first hinging block and a second hinging block are arranged in the first accommodating groove, the first hinging block is connected with a first connecting rod through a rotating shaft, and the second hinging block is connected with a second connecting rod through the rotating shaft;
a second accommodating groove is formed in the second fixing frame; a third hinging block and a fourth hinging block are arranged in the second containing groove, the third hinging block is connected with a third connecting rod through a rotating shaft, and the fourth hinging block is connected with a fourth connecting rod through a rotating shaft;
the free ends of the four connecting rods are on the same plane and are not on the same straight line after the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod rotate to a limit angle around the rotating shaft so as to form a supporting structure for supporting the testing device.
According to the traction power supply system power quality testing device provided by one part of embodiments of the present application, the first fixing frame and the second fixing frame are respectively disposed at two opposite sides of the body, and the first fixing frame and the second fixing frame both include:
the fixing plate and perpendicular set up in the connecting plate at fixed plate both ends, two the connecting plate with the fixed plate is limited to be encircleed the recess in the body outside, every all be provided with the threaded rod on the connecting plate, the threaded rod with body threaded connection.
According to the traction power supply system power quality testing device provided by one part of embodiments of the application, the first accommodating groove is formed in one surface of the first fixing frame, which is opposite to the body; the second accommodating groove is formed in one surface, back to the body, of the second fixing frame.
According to the traction power supply system power quality testing device provided by one part of embodiments of the application, the two sides in the first accommodating groove are provided with the first adjusting frame and the second adjusting frame, and the tops of the first adjusting frame and the second adjusting frame are abutted with the first accommodating groove; one end of the first connecting rod, which is opposite to the second connecting rod, extends into the first adjusting frame and contacts with the inner wall of the first adjusting frame, and a first thread sleeve is sleeved at one end of the first connecting rod, which is close to the first hinging block; one end, opposite to the first connecting rod, of the second connecting rod extends into the second adjusting frame and is in contact with the inner wall of the second adjusting frame, and a second thread sleeve is sleeved at one end, close to the second hinging block, of the second connecting rod;
a third adjusting frame and a fourth adjusting frame are arranged on two sides in the second accommodating groove, and the tops of the third adjusting frame and the fourth adjusting frame are abutted to the second accommodating groove; one end, opposite to the fourth connecting rod, of the third connecting rod extends into the second adjusting frame and is in contact with the inner wall of the third adjusting frame, and a third thread sleeve is sleeved at one end, close to the third hinging block, of the third connecting rod; one end of the fourth connecting rod, which is opposite to the third connecting rod, extends into the fourth adjusting frame and contacts with the inner wall of the fourth adjusting frame, and a fourth thread sleeve is sleeved at one end of the fourth connecting rod, which is close to the fourth hinging block.
According to the traction power supply system electric energy quality testing device provided by one part of embodiments of the application, the first thread bush is fixedly arranged on the inner wall of the first adjusting frame, and the first thread bush is in threaded connection with the first connecting rod; the second thread bush is fixedly arranged on the inner wall of the first adjusting frame, and is in threaded connection with the second connecting rod;
the third thread bush is fixedly arranged on the inner wall of the second adjusting frame, and is in threaded connection with the third connecting rod; the fourth thread bush is fixedly arranged on the inner wall of the second adjusting frame, and is in threaded connection with the fourth connecting rod.
In the power quality testing device for the traction power supply system provided by some embodiments of the present application, anti-slip pads are integrally formed on opposite sides of the first adjusting frame and the second adjusting frame, and anti-slip pads are integrally formed on opposite sides of the third adjusting frame and the fourth adjusting frame.
According to the traction power supply system electric energy quality testing device provided by one part of embodiments of the application, a first baffle is arranged in the first accommodating groove at a position between the first adjusting frame and the second adjusting frame, the first baffle is arranged in the first accommodating groove through a rotating shaft, and when the first baffle rotates to a direction parallel to the first adjusting frame and the second adjusting frame, the first baffle is pressed on anti-skid pads of the first adjusting frame and the second adjusting frame;
in the second accommodation groove, a second baffle is arranged at a position between the third adjusting frame and the fourth adjusting frame, the second baffle is arranged in the second accommodation groove through a rotating shaft, and the second baffle is pressed on the anti-skid pad of the third adjusting frame and the fourth adjusting frame when rotating to a direction parallel to the third adjusting frame and the fourth adjusting frame.
According to the traction power supply system power quality testing device provided by one part of the embodiment of the application, at least one group of rubber ribs are arranged on at least one surface of the body, and each group of rubber ribs is symmetrically arranged on the central axis of the surface.
According to the traction power supply system power quality testing device provided by one part of embodiments of the application, at least one protection frame is arranged on the body, and the arrangement surface of the protection frame is opposite to the arrangement surfaces of the first fixing frame and the second fixing frame.
According to the traction power supply system power quality testing device provided by one part of embodiments of the application, a plurality of rubber bumps are integrally formed on the outer surface of each protection frame.
Compared with the prior art, the technical scheme provided by the embodiment of the application has at least the following beneficial effects:
according to the traction power supply system electric energy quality testing device, the accommodating grooves are formed in the first fixing frame and the second fixing frame, the four connecting rods are arranged in the accommodating grooves in a hinged and rotating mode, and after the four connecting rods are unfolded, a supporting structure can be formed to support the testing device. Therefore, the device has a self-supporting function, a user does not need to additionally carry the supporting device to support the device, the occurrence burden of the user is greatly reduced, convenience is provided for the user, and the testing efficiency can be effectively guaranteed.
Drawings
FIG. 1 is a schematic diagram of a power quality testing apparatus for a traction power supply system according to an embodiment of the present application;
FIG. 2 is a schematic view illustrating an internal structure of the fixing frame according to an embodiment of the application;
FIG. 3 is an enlarged schematic view of a portion A of FIG. 2;
FIG. 4 is a schematic structural view of a protection frame according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a power quality testing device of a traction power supply system according to another embodiment of the present application.
Wherein the reference numerals are as follows:
101-a body; 102-fixing frame; 103-a threaded rod; 104-testing a display screen; 105-jack; 106-a receiving groove; 107-hinging blocks; 108-connecting rods; 109-an adjusting frame; 110-a thread sleeve; 111-rubber ribs; 112-a protective frame; 113-a non-slip mat; 114-a baffle; 115-rubber bumps.
Detailed Description
Embodiments of the present application will be further described below with reference to the accompanying drawings. In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application, and are not to indicate or imply that the apparatus or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two components. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
The technical solutions in the following embodiments provided in the present application may be combined with each other unless contradiction is caused between each other, and technical features thereof may be replaced with each other.
The embodiment provides a power quality testing device of a traction power supply system, as shown in fig. 1, a fixing frame 102 is arranged outside a body 101 of the testing device, wherein the fixing frame 102 comprises a first fixing frame and a second fixing frame; referring to fig. 2 and 3, the fixing frame 102 is provided with a receiving groove 106; a pair of hinge blocks 107 are arranged in the accommodating groove 106, the hinge blocks 107 are connected with a connecting rod 108 through a rotating shaft, and the connecting rod 108 is a threaded connecting rod. Specifically, a first accommodating groove is formed in the first fixing frame shown in the figure; a first hinging block and a second hinging block are arranged in the first accommodating groove, the first hinging block is connected with a first connecting rod through a rotating shaft, and the second hinging block is connected with a second connecting rod through the rotating shaft; a second accommodating groove is formed in the second fixing frame; a third hinging block and a fourth hinging block are arranged in the second containing groove, the third hinging block is connected with a third connecting rod through a rotating shaft, and the fourth hinging block is connected with a fourth connecting rod through a rotating shaft; the free ends of the four connecting rods are on the same plane and are not on the same straight line after the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod rotate to a limit angle around the rotating shaft so as to form a supporting structure for supporting the testing device. Fig. 1 is a schematic view of the four connecting rods 108 after being unfolded to form a supporting structure for supporting the body 101.
According to the traction power supply system electric energy quality testing device in the scheme, the accommodating groove is formed in the first fixing frame and the second fixing frame, the four connecting rods are arranged in the accommodating groove through hinged rotation, and the four connecting rods can form a supporting structure to support the testing device after being opened. Therefore, the device has a self-supporting function, a user does not need to additionally carry the supporting device to support the device, the occurrence burden of the user is greatly reduced, convenience is provided for the user, and the testing efficiency can be effectively guaranteed.
Preferably, in the above-mentioned solution, as shown in fig. 2 and 3, adjusting frames 109 are disposed on two sides in the accommodating groove 106, and the top of the adjusting frame 109 abuts against the accommodating groove 106; one end of the connecting rod 108 extends into the adjusting frame 109 and contacts with the inner wall of the adjusting frame 109, and a threaded sleeve 110 is sleeved at one end of the connecting rod 108, which is close to the hinge block 107. Further, in the above-mentioned aspect, the threaded sleeve 110 is fixedly disposed on the inner wall of the adjusting frame 109, and the threaded sleeve 110 is in threaded connection with the connecting rod 108.
Specifically, referring to fig. 1, a first adjusting frame and a second adjusting frame are arranged on two sides in the first accommodating groove, and the tops of the first adjusting frame and the second adjusting frame are abutted to the first accommodating groove; one end of the first connecting rod, which is opposite to the second connecting rod, extends into the first adjusting frame and contacts with the inner wall of the first adjusting frame, and a first thread sleeve is sleeved at one end of the first connecting rod, which is close to the first hinging block; one end, opposite to the first connecting rod, of the second connecting rod extends into the second adjusting frame and is in contact with the inner wall of the second adjusting frame, and a second thread sleeve is sleeved at one end, close to the second hinging block, of the second connecting rod; a third adjusting frame and a fourth adjusting frame are arranged on two sides in the second accommodating groove, and the tops of the third adjusting frame and the fourth adjusting frame are abutted to the second accommodating groove; one end, opposite to the fourth connecting rod, of the third connecting rod extends into the second adjusting frame and is in contact with the inner wall of the third adjusting frame, and a third thread sleeve is sleeved at one end, close to the third hinging block, of the third connecting rod; one end of the fourth connecting rod, which is opposite to the third connecting rod, extends into the fourth adjusting frame and contacts with the inner wall of the fourth adjusting frame, and a fourth thread sleeve is sleeved at one end of the fourth connecting rod, which is close to the fourth hinging block.
The first thread bush is fixedly arranged on the inner wall of the first adjusting frame, and is in threaded connection with the first connecting rod; the second thread bush is fixedly arranged on the inner wall of the first adjusting frame, and is in threaded connection with the second connecting rod; the third thread bush is fixedly arranged on the inner wall of the second adjusting frame, and is in threaded connection with the third connecting rod; the fourth thread bush is fixedly arranged on the inner wall of the second adjusting frame, and is in threaded connection with the fourth connecting rod.
In the above-mentioned scheme, through setting up the mode of connecting rod 108 and thread bush 110 threaded connection, can realize the effect of adjusting the supporting height.
Further, as shown in fig. 2, in the above-described scheme, in the receiving groove 106 of each fixing frame 102, the opposite side of each adjusting frame 109 is uniformly and integrally formed with the anti-slip pad 113. Specifically, the first adjusting frame and the opposite side of the second adjusting frame are provided with anti-slip pads in an integrated manner, and the opposite side of the third adjusting frame and the fourth adjusting frame are provided with anti-slip pads in an integrated manner. When the adjusting frame 109 is supported, the support stability can be ensured by arranging the anti-slip pad at the bottom of the adjusting frame 109.
Preferably, as shown in fig. 2, in the accommodating groove 106, a baffle 114 is disposed at a position between the two adjusting frames 109, the baffle 114 is disposed in the accommodating groove 106 via a rotating shaft, and when the baffle 114 rotates to a direction parallel to the adjusting frames 109, the baffle 114 is pressed against the anti-slip pad 113; specifically, a first baffle is arranged in the first accommodating groove at a position between the first adjusting frame and the second adjusting frame, the first baffle is arranged in the first accommodating groove through a rotating shaft, and when the first baffle rotates to be parallel to the first adjusting frame and the second adjusting frame, the first baffle is pressed on the anti-skid pads of the first adjusting frame and the second adjusting frame; in the second accommodation groove, a second baffle is arranged at a position between the third adjusting frame and the fourth adjusting frame, the second baffle is arranged in the second accommodation groove through a rotating shaft, and the second baffle is pressed on the anti-skid pad of the third adjusting frame and the fourth adjusting frame when rotating to a direction parallel to the third adjusting frame and the fourth adjusting frame.
According to the device in the scheme, when a tester needs to support the testing device, the user twists the baffle 114 firstly, twists the baffle 114 to the position parallel to the two anti-slip pads 113, so that the limit of the adjusting frames 109 is relieved, then the two adjusting frames 109 are overturned out of the accommodating groove 106, then the adjusting frames 109 are rotated to drive the threaded sleeves 110 to rotate downwards on the threaded connecting rods 108, the height of the adjusting frames 109 is extended, the user can adjust the device to a proper height for use, the device has a self-supporting function through the accommodating groove 106, the connecting rods 108, the adjusting frames 109 and the baffle 114, the user does not need to additionally carry the supporting device to support the device, the burden of the user is greatly reduced, and convenience is brought to the user.
Further preferably, referring to fig. 4 and 5, at least one protection frame 112 is disposed on the body 101, and a disposition surface of the protection frame 112 faces away from a disposition surface of the first fixing frame and the second fixing frame (i.e., the fixing frame 102). Wherein, a plurality of rubber bumps 115 are integrally formed on the outer surface of each of the guard frames 112. As shown in fig. 5, four guard frames 112 are provided, and the specific number can be adjusted according to the actual scene. When this device falls down from both sides direction or top direction that fig. 5 shows, through the design of protection frame 112, get up this device, reduce this device and the direct hard collision that carries out of ground, through the setting of rubber lug 115, the vibrations that produce when can absorbing the striking, reduce the damage that vibrations caused this device.
In addition, at least one surface of the body 101 is provided with at least one set of rubber ribs 111, and each set of rubber ribs 111 is disposed symmetrically to a central axis of the surface. Such as the configuration shown in fig. 5, wherein a set of rubber ribs 111 protect the test display 104 and the jack 105. When the device falls down from the front and back directions as shown in fig. 5, the front and back surfaces of the device collide with the ground when the rubber ribs 111 fall down, so that the front and back surfaces of the device cannot contact with the ground, and protection is formed. Namely, the top surface and the side surface of the body 101 are surrounded by the protection frame 112, and the rubber ribs 111 are arranged on the rest other surfaces, so that the body 101 is protected in all directions, the device has good protection performance, and the device can be protected in all directions.
Because this device is mostly used in the open air, falls down easily when carrying, transport and detection operation, consequently the testing arrangement in the current scheme often falls the damage and influences the going on of test procedure. According to the scheme provided by the embodiment of the application, the probability of the device being broken is greatly reduced through the improvement of the structure, the loss of a user is reduced, the operation progress of the user can be effectively ensured not to be influenced, the practicability of the device is improved, and the use requirement of the user is met.
Further, as shown in fig. 1 and 5, two fixing frames 102 (a first fixing frame and a second fixing frame) are disposed on opposite sides of the body 101, and the fixing frames 102 include a fixing plate and connecting plates vertically disposed on two ends of the fixing plate, two connecting plates and the fixing plate define a groove surrounding the outer side of the body 101, each connecting plate is provided with a threaded rod 103, and the threaded rod 103 is in threaded connection with the body 101. In the above scheme, the first accommodating groove is formed in one surface of the first fixing frame, which is opposite to the body; the second accommodating groove is formed in one surface, back to the body, of the second fixing frame. The fixing frame 102 is arranged through threaded connection, so that the fixing frame is convenient to detach, and when the supporting structure inside the fixing frame fails, the fixing frame can be conveniently maintained or replaced.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (6)
1. The utility model provides a traction power supply system electric energy quality testing arrangement which characterized in that:
a first fixing frame and a second fixing frame are arranged outside the body of the testing device;
a first accommodating groove is formed in the first fixing frame; a first hinging block and a second hinging block are arranged in the first accommodating groove, the first hinging block is connected with a first connecting rod through a rotating shaft, and the second hinging block is connected with a second connecting rod through the rotating shaft;
a second accommodating groove is formed in the second fixing frame; a third hinging block and a fourth hinging block are arranged in the second containing groove, the third hinging block is connected with a third connecting rod through a rotating shaft, and the fourth hinging block is connected with a fourth connecting rod through a rotating shaft;
the free ends of the four connecting rods are on the same plane and are not on the same straight line after the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod rotate to a limit angle around the rotating shaft so as to form a supporting structure for supporting the testing device;
a first adjusting frame and a second adjusting frame are arranged on two sides in the first accommodating groove, and the tops of the first adjusting frame and the second adjusting frame are abutted to the first accommodating groove; one end of the first connecting rod, which is opposite to the second connecting rod, extends into the first adjusting frame and contacts with the inner wall of the first adjusting frame, and a first thread sleeve is sleeved at one end of the first connecting rod, which is close to the first hinging block; one end, opposite to the first connecting rod, of the second connecting rod extends into the second adjusting frame and is in contact with the inner wall of the second adjusting frame, and a second thread sleeve is sleeved at one end, close to the second hinging block, of the second connecting rod;
a third adjusting frame and a fourth adjusting frame are arranged on two sides in the second accommodating groove, and the tops of the third adjusting frame and the fourth adjusting frame are abutted to the second accommodating groove; one end, opposite to the fourth connecting rod, of the third connecting rod extends into the second adjusting frame and is in contact with the inner wall of the third adjusting frame, and a third thread sleeve is sleeved at one end, close to the third hinging block, of the third connecting rod; one end, opposite to the third connecting rod, of the fourth connecting rod extends into the fourth adjusting frame and contacts with the inner wall of the fourth adjusting frame, and a fourth thread sleeve is sleeved at one end, close to the fourth hinging block, of the fourth connecting rod;
the first fixing frame and the second fixing frame are respectively arranged on two opposite sides of the body, and the first fixing frame and the second fixing frame comprise:
the fixing plate and the connecting plates are vertically arranged at two ends of the fixing plate, two connecting plates and the fixing plate define a groove surrounding the outer side of the body, each connecting plate is provided with a threaded rod, and the threaded rods are in threaded connection with the body;
the first accommodating groove is formed in one surface of the first fixing frame, which is opposite to the body; the second accommodating groove is formed in one surface, facing away from the body, of the second fixing frame;
the first thread bush is fixedly arranged on the inner wall of the first adjusting frame, and is in threaded connection with the first connecting rod; the second thread bush is fixedly arranged on the inner wall of the first adjusting frame, and is in threaded connection with the second connecting rod;
the third thread bush is fixedly arranged on the inner wall of the second adjusting frame, and is in threaded connection with the third connecting rod; the fourth thread bush is fixedly arranged on the inner wall of the second adjusting frame, and is in threaded connection with the fourth connecting rod.
2. The traction power supply system power quality testing device of claim 1, wherein:
the first adjusting frame and one side opposite to the second adjusting frame are provided with anti-slip pads in an integrated manner, and one side opposite to the third adjusting frame and one side opposite to the fourth adjusting frame are provided with anti-slip pads in an integrated manner.
3. The traction power supply system power quality testing apparatus of claim 2, wherein:
a first baffle is arranged in the first accommodating groove at a position between the first adjusting frame and the second adjusting frame, the first baffle is arranged in the first accommodating groove through a rotating shaft, and when the first baffle rotates to be parallel to the first adjusting frame and the second adjusting frame, the first baffle is pressed on the anti-skid pads of the first adjusting frame and the second adjusting frame;
in the second accommodation groove, a second baffle is arranged at a position between the third adjusting frame and the fourth adjusting frame, the second baffle is arranged in the second accommodation groove through a rotating shaft, and the second baffle is pressed on the anti-skid pad of the third adjusting frame and the fourth adjusting frame when rotating to a direction parallel to the third adjusting frame and the fourth adjusting frame.
4. A traction power supply system power quality testing apparatus according to any one of claims 1-3, wherein:
at least one surface of the body is provided with at least one group of rubber ribs, and each group of rubber ribs is symmetrical to the central axis of the surface.
5. The traction power system power quality testing apparatus of claim 4, wherein:
the body is provided with at least one protection frame, and the setting surface of protection frame is dorsad to the setting surface of first mount and second mount.
6. The traction power system power quality testing apparatus of claim 5, wherein:
and a plurality of rubber bumps are integrally formed on the outer surface of each protection frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010989720.0A CN112034217B (en) | 2020-09-18 | 2020-09-18 | Traction power supply system electric energy quality testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010989720.0A CN112034217B (en) | 2020-09-18 | 2020-09-18 | Traction power supply system electric energy quality testing device |
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| CN112034217A CN112034217A (en) | 2020-12-04 |
| CN112034217B true CN112034217B (en) | 2023-08-18 |
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| CN209542656U (en) * | 2018-10-10 | 2019-10-25 | 广东创锐电子技术股份有限公司 | A kind of current limits life test protective device |
| CN209208651U (en) * | 2018-10-18 | 2019-08-06 | 江苏鸿运汽车科技有限公司 | Vehicle-mounted quick pull platform |
| CN209950626U (en) * | 2018-12-13 | 2020-01-17 | 临海市尚莱休闲用品有限公司 | Foldable table |
| CN209296819U (en) * | 2018-12-15 | 2019-08-23 | 深圳市斯帕特科技有限公司 | A kind of insulation electromagnetic radiation detector bracket |
| CN209315178U (en) * | 2018-12-27 | 2019-08-30 | 南昌师范学院 | A kind of portable folding outdoor table |
| CN209728083U (en) * | 2019-03-26 | 2019-12-03 | 崔兆洋 | A kind of tractive power supply system electric energy quality test device |
| CN210036805U (en) * | 2019-05-28 | 2020-02-07 | 天津鼎燕科技有限公司 | Support frame for environmental monitoring convenient to accomodate and carry |
| CN211048684U (en) * | 2019-07-18 | 2020-07-21 | 金华浩阳休闲用品有限公司 | Area-variable telescopic table |
| CN211453858U (en) * | 2019-08-31 | 2020-09-08 | 中环柯昂(北京)科技有限公司 | System circuit fault detection device |
| CN211148727U (en) * | 2019-11-11 | 2020-07-31 | 苏州顺恩电子设备有限公司 | Electronic equipment maintenance is with setting up testing arrangement |
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