CN115638973A - Car quick change battery socket plug capability test equipment - Google Patents
Car quick change battery socket plug capability test equipment Download PDFInfo
- Publication number
- CN115638973A CN115638973A CN202211408539.1A CN202211408539A CN115638973A CN 115638973 A CN115638973 A CN 115638973A CN 202211408539 A CN202211408539 A CN 202211408539A CN 115638973 A CN115638973 A CN 115638973A
- Authority
- CN
- China
- Prior art keywords
- axis
- quick
- lifting
- seat
- change battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The invention discloses a device for testing the plugging and unplugging performance of a quick-change battery socket of an automobile, which comprises: the testing device comprises a case and a computer control system, wherein a water supply system, a testing device main body and the computer control system are arranged in the case; the main body of the test equipment comprises a positioning mechanism, a left-right rotating mechanism, a front-back inclining mechanism, a translation mechanism, a jacking mechanism and a lifting mechanism. Compared with the method for carrying out plugging endurance tests by manually adjusting various angles, the device can be compatible with various different products, the product is simpler and quicker to change the model, the automation degree is high, the test parameters of the product can be selected by one key of the touch screen, and the device has the functions of automatically storing the test parameters, the test records, copying and the like, and has the functions of plugging and pulling the record of the display data, displaying the peak value, reporting and summarizing and the like each time.
Description
Technical Field
The invention relates to the technical field of detection equipment, in particular to equipment for testing the plugging and unplugging performance of a quick-change battery socket of an automobile.
Background
The mileage anxiety of the pure electric vehicle is one of pain points of the pure electric vehicle, how to solve the problem of the mileage anxiety of customers, and each large host factory shortens the mileage recovery time after selling after completely extracting the brain juice while improving the energy density and the electric quantity of a power battery. The super quick charging station and quick battery changing technology are two hot technologies for solving the mileage problem of the electric vehicle at present.
The quick-change battery technology means that an electric car directly changes an electric box with electricity, and the electric box with low electricity is placed in a power changing station for charging.
In the quick-change process, the quick-change power station needs to be provided with a quick-connection socket, the quick-connection socket is connected with the electric box in an inserting mode, the changed electric box is charged, and the quick-change battery technology is one of effective methods for solving the problem of slow charging of the electric automobile.
Because the quick socket needs to be quickly plugged for multiple times and has higher requirements on the quick socket, the quick socket needs to be plugged and unplugged to determine the service life and other related performances of the quick socket, and the later maintenance and replacement of the quick socket are facilitated.
The plug test of current charging socket and plug all is conventional plug test, and the manual adjustment is pulled out and is inserted the angle, and degree of automation is lower, pulls out and inserts the detection data and also need independent equipment or artifical supplementary record and analysis, and efficiency and detection precision are not high.
Therefore, we propose a device for testing the plugging and unplugging performance of a quick-change battery socket of an automobile, so as to solve the problems proposed in the foregoing.
Disclosure of Invention
The invention aims to provide a device for testing the plugging and unplugging performance of a quick-change battery socket of an automobile, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an automobile quick change battery socket plug capability test equipment, includes: the testing device comprises a case and a computer control system, wherein a water supply system, a testing device main body and the computer control system are arranged in the case;
the test equipment main body comprises a positioning mechanism, a left-right rotating mechanism, a front-back tilting mechanism, a translation mechanism, a jacking mechanism and a lifting mechanism;
the front and back tilting mechanism is fixedly arranged on the fixed supporting plate, and the fixed supporting plate is fixedly arranged with the case;
the front and back tilting mechanism is connected with a clamp adjusting frame in a driving way, the clamp adjusting frame is rotationally connected with the fixed supporting plate, a lifting structure is arranged on the clamp adjusting frame, a left rotating mechanism and a right rotating mechanism are arranged on the lifting structure, and the left rotating mechanism and the right rotating mechanism are connected with a positioning mechanism in a driving way;
the jacking mechanism and the translation mechanism are fixedly arranged on a working platform of the case, the jacking mechanism and the translation mechanism are located under the positioning mechanism, the upper end of the jacking mechanism is movably connected with the quick-change battery socket test tray, and the quick-change battery socket test tray is movably connected with the translation mechanism.
Preferably, tilt mechanism contains that the slope drives actuating cylinder, fixed plate, supporting seat and connecting piece around, fixed plate fixed mounting drives actuating cylinder fixed mounting on fixed plate and fixed bolster in the front surface of fixed bolster, and the slope drives actuating cylinder fixed mounting about the fixed plate front surface, rotates on the supporting seat and connects the connecting piece, connecting piece fixed mounting anchor clamps alignment jig, and the flexible end swing joint that actuating cylinder was driven with the slope in anchor clamps alignment jig upper end.
Preferably, a lifting structure is installed on the fixture adjusting frame, the lifting mechanism comprises a lifting servo motor, a lifting seat and a screw rod, the lifting servo motor is fixedly installed at the lower end of the fixture adjusting frame, the lifting servo motor is connected with the screw rod in a driving mode, the screw rod and the fixture adjusting frame are provided with the lifting seat, the lifting seat is connected with the screw rod in a threaded rotating mode, the lifting seat is connected with a guide column of the fixture adjusting frame in a sliding mode, and the lifting seat is provided with a left rotating mechanism and a right rotating mechanism.
Preferably, the left-right rotating mechanism comprises a rotary servo motor, a fixing flange and a rotary connecting piece, the rotary servo motor is fixedly installed with the lifting seat through the fixing flange, a driving shaft of the rotary servo motor is fixedly connected with the rotary connecting piece, and the rotary connecting piece is fixedly installed on the positioning mechanism.
Preferably, a translation mechanism is arranged below the positioning mechanism, the translation mechanism comprises a Y-axis translation motor, an X-axis seat and a Y-axis seat, the Y-axis seat is fixedly mounted on a working platform in the case, a Y-axis translation motor, a Y-axis translation track and a Y-axis screw are mounted on the Y-axis seat, the Y-axis translation motor is in driving connection with the Y-axis screw, and the X-axis seat is arranged on the Y-axis translation track and the Y-axis screw.
Preferably, an X-axis translation motor, an X-axis translation track and an X-axis screw are installed on the X-axis seat, the X-axis translation motor is in driving connection with the X-axis screw, a quick-change battery socket tray is installed on the X-axis translation track and the X-axis screw, and the X-axis translation track is perpendicular to the Y-axis translation track.
Preferably, the computer control system is connected with a PLC control module, and the PLC control module is electrically controlled and connected with the positioning mechanism, the left-right rotating mechanism, the front-back tilting mechanism, the translation mechanism, the jacking mechanism and the lifting mechanism respectively.
Compared with the prior art, the invention has the beneficial effects that:
equipment is by the various sensor data of industrial computer collection analysis, the intelligent equipment of simplex position automated inspection condenser tube joint fatigue test performance of PLC independent control equipment action, compare and carry out the plug endurance test with the various angle of artificial adjustment, this equipment not only can compatible multiple different products, the product remodel is simple more swift, the degree of automation is high, the test parameter of product can be selected through a touch-sensitive screen key, more have automatic storage test parameter, experimental record, functions such as copy, the record of plug display data every time, show the peak value, functions such as report summarize.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of the positioning mechanism and the front-rear tilting mechanism of the present invention;
FIG. 4 is a schematic structural view of a left-right rotating mechanism and a front-back tilting mechanism in the present invention;
FIG. 5 is a schematic view of the positioning mechanism and the translating mechanism of the present invention;
FIG. 6 is a schematic structural view of a translation mechanism and a jacking mechanism according to the present invention;
fig. 7 is a schematic view showing the structure of a water supply system according to the present invention.
In the figure: 1. a positioning mechanism; 2. a left-right rotating mechanism; 21. rotating the servo motor; 22. fixing the flange; 23. a rotating connector; 3. a front and rear tilt mechanism; 31. an inclined driving cylinder; 32. a fixing plate; 33. a supporting seat; 34. a connecting member; 4. a translation mechanism; 41. a Y-axis translation motor; 42. an X-axis translation motor; 43. an X shaft seat; 44. a Y-axis seat; 5. a jacking mechanism; 6. a lifting mechanism; 61. a lifting servo motor; 63. a screw rod; 62. a lifting seat; 7. a water supply system; 8. a chassis; 9. a clamp adjusting bracket; 10. and fixing the support plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides an automobile quick change battery socket plug capability test equipment, includes: the test device comprises a case 8 and a computer control system, wherein a water supply system 7, a test device main body and the computer control system are installed in the case 8;
the main body of the test equipment comprises a positioning mechanism 1, a left-right rotating mechanism 2, a front-back tilting mechanism 3, a translation mechanism 4, a jacking mechanism 5, a lifting mechanism 6 and a water supply system 7;
the front and back tilting mechanism 3 is fixedly arranged on a fixed support plate 10, and the fixed support plate 10 is fixedly arranged with the case 8;
the front and back tilting mechanism 3 comprises a tilting driving cylinder 31, a fixing plate 32, a supporting seat 33 and a connecting piece 34, wherein the fixing plate 32 is fixedly arranged on the front surface of the fixed supporting plate 10, the tilting driving cylinder 31 is fixedly arranged on the fixing plate 32 and the fixed supporting plate 10, the supporting seat 33 is fixedly arranged on the left and right of the front surface of the fixing plate 32, and the connecting piece 34 is rotatably connected on the supporting seat 33;
the connecting piece 34 is fixedly provided with the clamp adjusting frame 9, the upper end of the clamp adjusting frame 9 is movably connected with the telescopic end of the inclined driving cylinder 31, the telescopic end is driven by the inclined driving cylinder 31 to stretch back and forth to drive the upper end of the clamp adjusting frame 9 to move back and forth, and the clamp adjusting frame 9 is rotated and inclined through the connecting piece 34;
the fixture adjusting frame 9 is provided with a lifting mechanism 6, the lifting mechanism 6 comprises a lifting servo motor 61, a lifting seat 62 and a screw rod 63, the lifting servo motor 61 is fixedly arranged at the lower end of the fixture adjusting frame 9, the lifting servo motor 61 is in driving connection with the screw rod 63, the screw rod 63 and the fixture adjusting frame 9 are provided with the lifting seat 62, the lifting seat 62 is in threaded rotary connection with the screw rod 63, and the lifting seat 62 is in sliding connection with a guide column of the fixture adjusting frame 9;
the lifting servo motor 61 drives the screw rod 63 to rotate, so that the lifting seat 62 moves up and down in the clamp adjusting frame 9, and the height of the lifting seat 62 is adjusted;
the left-right rotating mechanism 2 is installed on the lifting seat 62, the left-right rotating mechanism 2 comprises a rotating servo motor 21, a fixed flange 22 and a rotating connecting piece 23, the rotating servo motor 21 is fixedly installed with the lifting seat 62 through the fixed flange 22, a driving shaft of the rotating servo motor 21 is fixedly connected with the rotating connecting piece 23, and the rotating connecting piece 23 is fixedly installed on the positioning mechanism 1;
the rotary servo motor 21 drives the rotary connecting piece 23 to drive the positioning mechanism 1 to rotate left and right;
a translation mechanism 4 is arranged below the positioning mechanism 1, the translation mechanism 4 comprises a Y-axis translation motor 41, an X-axis translation motor 42, an X-axis seat 43 and a Y-axis seat 44, the Y-axis seat 44 is fixedly arranged on a working platform in the case 8, the Y-axis translation motor 41, a Y-axis translation track and a Y-axis screw are arranged on the Y-axis seat 44, the Y-axis translation motor 41 is in driving connection with the Y-axis screw, and the X-axis seat 43 is arranged on the Y-axis translation track and the Y-axis screw;
an X-axis translation motor 42, an X-axis translation track and an X-axis screw are arranged on the X-axis seat 43, the X-axis translation motor 42 is in driving connection with the X-axis screw, and a quick-change battery socket tray is arranged on the X-axis translation track and the X-axis screw;
the X-axis translation track is vertical to the Y-axis translation track;
the Y-axis translation motor 41 drives the Y-axis screw rod to rotate, so that the X-axis base 43 reciprocates along the Y-axis translation track, the X-axis translation motor 42 drives the X-axis screw rod to rotate, the quick-change battery socket tray reciprocates along the X-axis translation track, the automatic movement and position adjustment of the quick-change battery socket tray on a plane are realized, the screw rod rotates, and the movement precision is increased;
a hole is concentrically penetrated between the X shaft seat 43 and the Y shaft seat 44, a jacking mechanism 5 is arranged in the hole, the jacking mechanism 5 is fixedly installed with the case 8, the jacking mechanism 5 is fixedly connected with the quick-change battery socket tray, and when the translation mechanism 4 moves the quick-change battery socket tray to a specified position, the quick-change battery socket tray is jacked through the jacking mechanism 5 to adjust the height of the quick-change battery socket tray;
the computer control system is connected with a PLC control module which is respectively in electric control connection with the positioning mechanism 1, the left and right rotating mechanism 2, the front and back tilting mechanism 3, the translation mechanism 4, the jacking mechanism 5, the lifting mechanism 6 and the water supply system 7;
the positioning mechanism 1 accurately positions the quick-change battery socket, the left-right rotating mechanism 2 rotates the positioning mechanism 1 left and right to enable the rotation angle of the positioning mechanism 1 and the quick-change battery to meet the plugging and unplugging requirement, the front-back tilting mechanism 3 rotates the positioning mechanism 1 front and back to enable the positioning mechanism 1 and the quick-change battery socket to form a corresponding front-back tilting angle, the translation mechanism 4 is used for adjusting different positions of the quick-change battery socket to realize plugging and unplugging tests of different positions, the lifting mechanism 6 is used for lifting the positioning mechanism 1 to lower the quick-change battery socket to a test approach point to complete preparation work, and the water supply system 7 is used for testing the actual flow and the pressure-resistant grade inside the quick-change battery socket through water supply in the plugging and unplugging test process;
the water supply system 7 supplies water to the quick-change battery socket, water is pumped from the water tank 46 through the water pump 45 and is supplied into the quick-change battery socket through a pipeline, the pressure sensor 47 detects the pressure of the water inlet and the water outlet to obtain a pressure difference inside the quick-change battery socket in the plugging and unplugging process when water is supplied, the flowmeter 48 monitors whether the flow inside the water supply system 7 reaches a test standard or not, the flow of the water can be adjusted by adjusting the power of the water pump 45 or output through a PLC analog quantity, and a required flow value is input;
the working principle of the servo mechanism of the plug testing machine is as follows: the cooling water pipe joint is manually installed into the positioning mechanism 1, a starting button is pressed, the equipment descends the lifting mechanism 6 to an appointed plugging original point through the translation mechanism 4 and the jacking mechanism 5, the quick-change battery socket is driven to be continuously plugged and unplugged through the jacking mechanism 5, the left-right rotating mechanism 2 and the front-back tilting mechanism 3 move to a position required by testing through a key returning original point function, the bottom jacking electric cylinder drives the clamp to complete the continuous plugging and unplugging endurance testing work of the cooling water pipe joint, and meanwhile, the water supply system 7 starts to work.
Those not described in detail in this specification are within the skill of the art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an automobile quick change battery socket plug capability test equipment, includes: the test device comprises a case (8) and a computer control system, wherein a water supply system (7), a test device main body and the computer control system are installed in the case (8);
the testing equipment main body comprises a positioning mechanism (1), a left-right rotating mechanism (2), a front-back tilting mechanism (3), a translation mechanism (4), a jacking mechanism (5) and a lifting mechanism (6);
the front and back tilting mechanism (3) is fixedly arranged on a fixed support plate (10), and the fixed support plate (10) is fixedly arranged with the case (8);
the method is characterized in that: the front and back tilting mechanism (3) is connected with a clamp adjusting frame (9) in a driving mode, the clamp adjusting frame (9) is connected with a fixed supporting plate (10) in a rotating mode, a lifting structure (6) is installed on the clamp adjusting frame (9), a left rotating mechanism and a right rotating mechanism (2) are installed on the lifting structure (6), and the left rotating mechanism and the right rotating mechanism (2) are connected with a positioning mechanism (1) in a driving mode;
jacking mechanism (5) and translation mechanism (4) fixed mounting are on the work platform of quick-witted case (8), and jacking mechanism (5) and translation mechanism (4) are located positioning mechanism (1) under, and jacking mechanism (5) upper end swing joint quick change battery socket test tray, quick change battery socket test tray simultaneously with translation mechanism (4) swing joint.
2. The automobile quick-change battery socket plug performance test equipment according to claim 1, wherein the front and rear tilting mechanism (3) comprises a tilting driving cylinder (31), a fixing plate (32), a supporting seat (33) and a connecting piece (34), the fixing plate (32) is fixedly mounted on the front surface of the fixed supporting plate (10), the tilting driving cylinder (31) is fixedly mounted on the fixing plate (32) and the fixed supporting plate (10), the supporting seat (33) is fixedly mounted on the left and right of the front surface of the fixing plate (32), the supporting seat (33) is rotatably connected with the connecting piece (34) on the supporting seat (33), the connecting piece (34) is fixedly mounted with the clamp adjusting frame (9), and the upper end of the clamp adjusting frame (9) is movably connected with the telescopic end of the tilting driving cylinder (31).
3. The automobile quick-change battery socket plugging and unplugging performance testing device according to claim 2, wherein a lifting structure (6) is installed on the fixture adjusting frame (9), the lifting mechanism (6) comprises a lifting servo motor (61), a lifting seat (62) and a lead screw (63), the lifting servo motor (61) is fixedly installed at the lower end of the fixture adjusting frame (9), the lifting servo motor (61) drives the lead screw (63), the lifting seat (62) is arranged on the lead screw (63) and the fixture adjusting frame (9), the lifting seat (62) is in threaded rotary connection with the lead screw (63), the lifting seat (62) is in sliding connection with a guide post of the fixture adjusting frame (9), and the left-right rotating mechanism (2) is installed on the lifting seat (62).
4. The automobile quick-change battery socket plugging and unplugging performance testing device according to claim 3, wherein the left and right rotating mechanism (2) comprises a rotating servo motor (21), a fixing flange (22) and a rotating connecting piece (23), the rotating servo motor (21) is fixedly installed with the lifting seat (62) through the fixing flange (22), a driving shaft of the rotating servo motor (21) is fixedly connected with the rotating connecting piece (23), and the rotating connecting piece (23) is fixedly installed on the positioning mechanism (1).
5. The device for testing the plugging and unplugging performance of the quick-change battery socket of the automobile according to claim 4, wherein a translation mechanism (4) is arranged below the positioning mechanism (1), the translation mechanism (4) comprises a Y-axis translation motor (41), an X-axis translation motor (42), an X-axis seat (43) and a Y-axis seat (44), the Y-axis seat (44) is fixedly installed on a working platform in the chassis (8), the Y-axis translation motor (41), a Y-axis translation rail and a Y-axis screw are installed on the Y-axis seat (44), the Y-axis translation motor (41) is in driving connection with the Y-axis screw, and the X-axis seat (43) is arranged on the Y-axis translation rail and the Y-axis screw.
6. The device for testing the plugging and unplugging performance of the quick-change battery socket of the automobile according to claim 5, wherein an X-axis translation motor (42), an X-axis translation rail and an X-axis screw are mounted on the X-axis seat (43), the X-axis translation motor (42) is in driving connection with the X-axis screw, a quick-change battery socket tray is mounted on the X-axis translation rail and the X-axis screw, and the X-axis translation rail is perpendicular to the Y-axis translation rail.
7. The device for testing the plugging and unplugging performance of the quick-change battery socket of the automobile according to any one of claims 1-6, wherein the computer control system is connected with a PLC control module, and the PLC control module is electrically connected with the positioning mechanism (1), the left-right rotating mechanism (2), the front-back tilting mechanism (3), the translation mechanism (4), the jacking mechanism (5) and the lifting mechanism (6) respectively.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211408539.1A CN115638973A (en) | 2022-11-10 | 2022-11-10 | Car quick change battery socket plug capability test equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211408539.1A CN115638973A (en) | 2022-11-10 | 2022-11-10 | Car quick change battery socket plug capability test equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
CN115638973A true CN115638973A (en) | 2023-01-24 |
Family
ID=84949033
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202211408539.1A Pending CN115638973A (en) | 2022-11-10 | 2022-11-10 | Car quick change battery socket plug capability test equipment |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN115638973A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116659845A (en) * | 2023-07-31 | 2023-08-29 | 常州时进精密机械有限公司 | Plug testing device and method based on valve part |
CN117054799A (en) * | 2023-10-13 | 2023-11-14 | 中汽研新能源汽车检验中心(天津)有限公司 | Reliability testing device for power conversion interface |
-
2022
- 2022-11-10 CN CN202211408539.1A patent/CN115638973A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116659845A (en) * | 2023-07-31 | 2023-08-29 | 常州时进精密机械有限公司 | Plug testing device and method based on valve part |
CN117054799A (en) * | 2023-10-13 | 2023-11-14 | 中汽研新能源汽车检验中心(天津)有限公司 | Reliability testing device for power conversion interface |
CN117054799B (en) * | 2023-10-13 | 2023-12-26 | 中汽研新能源汽车检验中心(天津)有限公司 | Reliability testing device for power conversion interface |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN115638973A (en) | Car quick change battery socket plug capability test equipment | |
CN206531939U (en) | A kind of motor stand test clamping device | |
CN112247933A (en) | New energy automobile spare part detects auxiliary device | |
CN116558743B (en) | Airtight testing device with leakage early warning function for hydrogen energy equipment | |
CN217483756U (en) | On-vehicle quick-witted airtight test auxiliary fixture that charges | |
CN211877377U (en) | Pneumatic dual-rotor test bed | |
CN210108707U (en) | Crystal head plugging and unplugging testing device | |
CN210269148U (en) | Fatigue test testing arrangement of bicycle front fork | |
CN209559505U (en) | Power assembly test device | |
CN221006695U (en) | Be used for whole car controller gas tightness detection device of new energy automobile | |
CN220647513U (en) | Portal frame and automobile production line detection frame body thereof | |
CN217981581U (en) | Electronic signal debugging device | |
CN220983235U (en) | Production facility detection device | |
CN221323847U (en) | Three-dimensional reconstruction image acquisition device convenient to installation | |
CN221880938U (en) | Device for debugging computer software | |
CN221948445U (en) | Assembly positioning equipment for low-leakage PCB substrate | |
CN217597040U (en) | Reactor internals inspection appurtenance | |
CN217824845U (en) | Stand adjusting device of photovoltaic power plant support | |
CN220932364U (en) | High torque density wind power main gear test fixture | |
CN219582018U (en) | Circuit welding device for electrical engineering | |
CN219666568U (en) | Locomotive fuel tank deflection device | |
CN220268650U (en) | Positioning bracket for pipeline installation | |
CN221069489U (en) | Be used for petrochemical warehousing and transportation device | |
CN216994151U (en) | ETC recorder equipment capable of improving positioning accuracy | |
CN221910549U (en) | Clamping structure for welding bicycle frame |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |