CN218842862U - Bridge counter weight detection device - Google Patents
Bridge counter weight detection device Download PDFInfo
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- CN218842862U CN218842862U CN202222593248.6U CN202222593248U CN218842862U CN 218842862 U CN218842862 U CN 218842862U CN 202222593248 U CN202222593248 U CN 202222593248U CN 218842862 U CN218842862 U CN 218842862U
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Abstract
The utility model relates to a bridge detects technical field, especially relates to a bridge counter weight detection device. The bridge counterweight detection device comprises a base, a rotating disc, a counterweight component, a top seat, a horizontal hydraulic telescopic arm, a vertical adjusting component and a horizontal detection seat; the bottom of the base is provided with moving wheels which are distributed in a rectangular shape, and the left side and the right side of the base are respectively provided with supporting legs with adjustable heights; the counterweight assembly comprises a counterweight groove coaxially connected to the top of the rotating disc and a counterweight block group movably assembled in the counterweight groove in the left-right direction; the horizontal hydraulic telescopic arm is fixed on the top seat, and the driving end of the horizontal hydraulic telescopic arm is connected with an installation box; the vertical adjusting assembly comprises a vertical seat and a vertical driving mechanism, the horizontal detection seat is connected to the bottom end of the vertical seat and is perpendicular to the vertical seat, and a bridge detector is movably assembled on the horizontal detection seat along the length direction of the horizontal detection seat. The utility model can realize the adjustment of the position of the counterweight group, thereby adjusting the gravity center of the device and avoiding the occurrence of side turning; meanwhile, the manual standing detection on the hanging basket is avoided, and the safety is high.
Description
Technical Field
The utility model relates to a bridge detects technical field, especially relates to a bridge counter weight detection device.
Background
The bridge is generally a structure which is erected on rivers, lakes and seas and allows vehicles, pedestrians and the like to smoothly pass through. In order to adapt to the modern high-speed developed traffic industry, bridges are also extended to be constructed to span mountain stream, unfavorable geology or meet other traffic needs, so that the buildings are convenient to pass. The bridge generally comprises an upper structure, a lower structure, a support and an auxiliary structure, wherein the upper structure is also called a bridge span structure and is a main structure for spanning obstacles; the lower structure comprises a bridge abutment, a bridge pier and a foundation; the support is a force transmission device arranged at the supporting positions of the bridge span structure and the bridge pier or the bridge abutment; the attached structure refers to bridge end lapping plate, taper slope protection, bank protection, diversion engineering, etc.
The bridge detection aims to master the technical condition and the safety condition of the bridge at any time, diagnose the damage condition and the degree of the bridge through the nondestructive detection of the bridge, evaluate the reliability, the durability and the bearing capacity of the bridge and provide a basis for the decision of maintenance, maintenance and management of the bridge. Most of the existing bridge detection devices comprise a balance weight vehicle, a suspension arm erected on the balance weight vehicle and a hanging basket at the bottom of the suspension arm, personnel stand on the hanging basket, the hanging basket is suspended on the bottom surface of the bridge through the suspension arm, and then the personnel hold a detector to perform nondestructive detection on the bottom surface of the bridge, so that the stability of the hanging basket is poor and the danger is high; in addition, the counterweight in the counterweight vehicle is usually fixed in position, and the gravity center of the vehicle body cannot be adjusted under the influence of the counterweight, so that the use is limited.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims to provide a bridge counter weight detection device to solve the bridge counter weight detection device focus among the prior art and can not adjust, personnel detect dangerous higher technical problem.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a bridge counterweight detection device, comprising:
the device comprises a base, a support and a lifting mechanism, wherein the length direction of the base is defined as the front-back direction, the width direction of the base is defined as the left-right direction, moving wheels which are distributed in a rectangular shape are arranged at the bottom of the base, and supporting legs with adjustable heights are respectively arranged on the left side and the right side of the base;
the rotating disc is rotatably assembled at the top of the base;
the counterweight assembly comprises a counterweight groove coaxially connected to the top of the rotating disc and a counterweight block group movably assembled in the counterweight groove in the left-right direction;
the top seat is installed in the counterweight groove and is coaxially arranged with the rotating disc;
the horizontal hydraulic telescopic arm is fixed on the top seat, and a driving end of the horizontal hydraulic telescopic arm is fixedly connected with an installation box;
the vertical adjusting assembly comprises a vertical seat and a vertical driving mechanism, the vertical seat is movably assembled on the installation box along the vertical direction, the vertical seat penetrates through the installation box, and the vertical driving mechanism is fixed on the installation box and is in transmission connection with the vertical seat so as to drive the vertical seat to move up and down;
the horizontal detection seat is connected to the bottom end of the vertical seat and is perpendicular to the vertical seat, and the bridge detector is movably assembled on the horizontal detection seat along the length direction of the horizontal detection seat.
Furthermore, a counterweight adjusting motor is arranged beside the top seat in the counterweight groove, an output shaft of the counterweight adjusting motor is in transmission connection with a counterweight adjusting shaft, one end of the counterweight adjusting shaft, which is far away from the counterweight adjusting motor, is rotatably assembled on the groove wall of the counterweight groove, a counterweight adjusting block is in threaded connection with the counterweight adjusting shaft, and a vertical shaft is arranged on the counterweight adjusting block; the counterweight group comprises a plurality of counterweights sleeved on the vertical shaft.
Preferably, the counterweight adjusting shafts are distributed on the top of the counterweight adjusting block in a rectangular shape, and the counterweight group corresponds to the counterweight adjusting shafts one by one.
Further, the bottom of every counter weight group all is equipped with places the board, places the board cover and establishes on the vertical axis that corresponds, places and is equipped with buffer spring between board and the vertical axis, and buffer spring cover establishes on vertical axis and one end and counter weight regulating block fixed connection, one end with place board fixed connection.
Furthermore, the installation box comprises a box body and a U-shaped installation seat connected to the left side of the box body, and the U-shaped installation seat is fixedly connected with the horizontal hydraulic telescopic arm; the vertical driving mechanism comprises a lifting driving motor and a bevel gear transmission assembly, the lifting driving motor is fixed in the U-shaped mounting seat, an output shaft of the lifting driving motor extends in the left-right direction, one end of the output shaft of the lifting driving motor extends into the box body, the bevel gear transmission assembly comprises a driving bevel gear coaxially connected to the output shaft of the lifting driving motor and a driven bevel gear in meshing transmission with the driving bevel gear, and the driving bevel gear and the driven bevel gear are both positioned in the box body; the bottom of the driven bevel gear is coaxially connected with a hollow shaft, the hollow shaft is rotatably assembled on the box body, and the center of the driven bevel gear is fixedly connected with an adjusting nut; the vertical seat comprises a U-shaped seat body and a threaded shaft which is arranged in the U-shaped seat body in a rotation stopping assembly mode, the U-shaped seat body penetrates through the box body and is in guide sliding fit with the box body in the vertical direction, the threaded shaft is in threaded fit with the adjusting nut, and the threaded shaft penetrates through the hollow shaft and the box body.
Further, integrated into one piece has two slides along front and back direction interval arrangement on the level detection seat, and the sliding is equipped with the slider on the slide, the top at the slider is fixed to the bridge detector.
Furthermore, an electric push rod is fixedly connected to the position, close to the vertical seat, of the horizontal detection seat, and the pushing end of the electric push rod is connected with the sliding block.
Furthermore, the bottom of the base is provided with a groove which is concave upwards, a bottom plate is detachably arranged in the groove, a rotating motor is installed on the bottom plate, and the rotating motor is in transmission connection with the rotating disk.
Preferably, all be equipped with the backup pad on the left cell wall of recess and the right cell wall, the bottom plate includes the sliding plate body at both ends about U-shaped plate body top and connection, sliding plate body and the backup pad sliding fit that corresponds.
Furthermore, the left side and the right side of the base are respectively connected with a supporting rod extending along the left-right direction, the end part of the supporting rod is connected with a threaded sleeve extending along the up-down direction along the axis, the supporting leg comprises a T-shaped adjusting rod and a round table-shaped supporting leg, and the adjusting rod is in threaded fit with the supporting rod.
The utility model discloses a bridge counter weight detection device's beneficial effect is:
1. bridge counter weight detection device passes through the flexible arm of horizontal hydraulic pressure, opens the adjustment of components such as rotating electrical machines, lift driving motor and electric putter can realize the bridge detector in position on horizontal direction and vertical direction and circumferencial direction, utilizes the bridge detector to come the automatic nondestructive test who realizes the bridge bottom, need not the manual work and stands and measure in the hanging flower basket that hangs, and the security is high, and detection efficiency is high.
2. Under the drive of the counterweight adjusting motor, the counterweight group can move in the left-right direction, and under the drive of the rotating motor, the counterweight group can be circumferentially adjusted in position, so that the gravity center position of the whole counterweight detection device can be adjusted, and rollover is avoided.
3. The quantity of balancing weight can increase and decrease, is favorable to the accurate regulation of bridge counter weight detection device focus position, under buffer spring's effect, avoids taking place vertical collision and causing wearing and tearing between the balancing weight.
4. Under the screw-thread fit of threaded shaft and adjusting nut, vertical seat can be stable keep in current position, can not take place to fall.
5. The bridge counterweight detection device can move under the action of the moving wheels, so that different positions of the bridge can be detected, and when the bridge counterweight detection device moves in place, the bridge counterweight detection device can be stably kept at the current position under the action of the supporting legs, and cannot slide.
Drawings
Fig. 1 is a schematic view of the overall structure of the bridge counterweight detection device of the present invention;
fig. 2 is a top view of the counterweight group in the bridge counterweight detecting device of the present invention;
FIG. 3 is an enlarged view at A in FIG. 1;
FIG. 4 is an enlarged view at B of FIG. 1;
fig. 5 is a schematic structural diagram of the vertical adjusting component in the bridge counterweight detecting device of the present invention.
Description of reference numerals: 1-base, 2-moving wheel, 3-landing leg, 4-foot, 5-supporting rod, 6-groove, 7-bottom plate, 8-rotating motor, 9-rotating disk, 10-counterweight groove, 11-counterweight adjusting motor, 12-counterweight adjusting shaft, 13-counterweight adjusting block, 14-vertical shaft, 15-placing plate, 16-buffer spring, 17-counterweight block, 18-box, 19-U-shaped mounting seat, 20-horizontal hydraulic telescopic arm, 21-top seat, 22-vertical seat, 23-horizontal detecting seat, 24-bridge detector, 25-lifting driving motor, 26-driving bevel gear, 27-driven bevel gear, 28-threaded shaft, 29-adjusting nut, 30-hollow shaft, 31-slideway, 32-sliding block, 33-electric push rod, 34-bridge, 35-threaded sleeve, 36-adjusting rod and 37-supporting plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses a bridge counter weight detection device's concrete embodiment:
as shown in fig. 1, the bridge counterweight detection device comprises a base 1, a rotating disc 9, a counterweight assembly, a top seat 21, a horizontal hydraulic telescopic arm 20, a vertical adjustment assembly and a horizontal detection seat 23.
The longitudinal direction of the base 1 is defined as the front-back direction, the width direction of the base 1 is defined as the left-right direction, and the longitudinal direction of the base 1 is the same as the longitudinal direction of the bridge 34. The bottom of the base 1 is provided with moving wheels 2 which are distributed in a rectangular shape, so that the whole device can move on the bridge 34. The left and right sides of the base 1 are respectively provided with a height-adjustable supporting leg 3, in the embodiment, the left and right sides of the base 1 are respectively connected with a supporting rod 5 extending along the left and right direction, and the end part of the supporting rod 5 is connected with a threaded sleeve 35 with an axis extending along the up and down direction. The landing leg 3 is including the stabilizer blade 4 that is T shape regulation pole 36 and round platform form, adjusts pole 36 and branch 5 screw-thread fit, when revolving the screw rod, can realize the reciprocating of stabilizer blade 4, until stabilizer blade 4 and bridge surface contact.
As shown in fig. 1 and 4, the bottom of the base 1 is provided with a groove 6 recessed upwards, the left and right walls of the groove 6 are provided with supporting plates 37, and a bottom plate 7 is arranged between the two supporting plates 37. The bottom plate 7 comprises a U-shaped plate body and sliding plate bodies connected to the left end and the right end of the top of the U-shaped plate body, and the sliding plate bodies are in sliding fit with the corresponding supporting plates 37 to realize the drawing of the bottom plate 7 in the front-back direction. Wherein, install rotating electrical machines 8 on the sliding plate body, the output shaft orientation of rotating electrical machines is connected with the transmission of the rotary disk 9 of base 1 top, realizes the circular rotation of rotary disk 9.
The counterweight assembly comprises a counterweight groove 10 coaxially connected to the top of the rotating disk 9 and a counterweight group movably fitted in the counterweight groove 10 in the left-right direction, and a top seat 21 is installed in the counterweight groove 10 and coaxially arranged with the rotating disk 9. As shown in fig. 1, 2 and 3, a counterweight adjusting motor 11 is disposed on the left side of the top seat 21 in the counterweight groove 10, an output shaft of the counterweight adjusting motor 11 is in transmission connection with a counterweight adjusting shaft 12, one end of the counterweight adjusting shaft 12, which is far away from the counterweight adjusting motor 11, is rotatably assembled on the left groove wall of the counterweight groove 10, and a counterweight adjusting block 13 is in threaded connection with the counterweight adjusting shaft 12. The counterweight adjusting block 13 is provided with vertical shafts 14 which are distributed in a rectangular shape, four groups of counterweight blocks are arranged, and each group comprises a plurality of counterweight blocks 17 which are sleeved on the corresponding vertical shafts 14. In order to avoid collision and friction of each balancing weight 17 when in use, the bottom of each balancing weight group is provided with a placing plate 15, and the placing plate 15 is sleeved on the corresponding vertical shaft 14. A buffer spring 16 is arranged between the placing plate 15 and the vertical shaft 14, the buffer spring 16 is sleeved on the vertical shaft 14, one end of the buffer spring is fixedly connected with the counterweight adjusting block 13, and the other end of the buffer spring is fixedly connected with the placing plate 15. Under the driving of the counterweight adjusting motor 11, the counterweight adjusting block 13 can carry each counterweight group to carry out position adjustment in the left-right direction.
The horizontal hydraulic telescopic arm 20 is fixed on the top seat 21, and a driving end of the horizontal hydraulic telescopic arm 20 is fixedly connected with an installation box. In this embodiment, the horizontal hydraulic telescopic arm 20 is a hydraulic cylinder commonly used in the prior art. As shown in fig. 1 and 5, the mounting box comprises a box body 18 and a U-shaped mounting seat 19 connected to the left side of the box body 18, and the U-shaped mounting seat 19 is fixedly connected with a horizontal hydraulic telescopic arm 20.
The vertical adjustment assembly includes a vertical seat 22 and a vertical drive mechanism, wherein the vertical seat 22 includes a U-shaped seat body and a threaded shaft 28 that is spline-fitted within the U-shaped seat body, the threaded shaft being non-rotatable. The U-shaped seat body penetrates through the box body 18 and is in guide sliding fit with the box body 18 in the vertical direction. The vertical driving mechanism comprises a lifting driving motor 25 and a bevel gear transmission assembly, the lifting driving motor 25 is fixed in the U-shaped mounting seat 19, an output shaft of the lifting driving motor 25 extends in the left-right direction, and one end of the output shaft extends into the box body 18. The bevel gear transmission assembly comprises a driving bevel gear 26 coaxially connected to an output shaft of the lifting driving motor 25 and a driven bevel gear 27 in meshing transmission with the driving bevel gear 26, and the driving bevel gear 26 and the driven bevel gear 27 are both positioned in the box body 18. In the embodiment, the driven bevel gear 27 is processed, the hollow shaft 30 is coaxially connected to the bottom of the driven bevel gear 27, the bottom end of the hollow shaft 30 is rotatably assembled on the box body 18 through a bearing, the hollow shaft 30 passes through the inner ring of the bearing and extends out of the box body 18, and the hollow shaft 30 plays a role in supporting the driven bevel gear 27; an adjusting nut 29 is fixedly connected to the center of the driven bevel gear 27 and the side of the driven bevel gear facing away from the hollow shaft 30 in a welding manner. The threaded shaft 28 is threadedly engaged with the adjustment nut 29, and the threaded shaft 28 passes through the hollow shaft 30 and the case 18. When the lifting driving motor 25 rotates, the driven bevel gear 27 is driven to rotate by the driving bevel gear 26, the adjusting nut 29 rotates with the driven bevel gear 27, and the threaded shaft 28 is driven to move in the vertical direction, so that the vertical seat 22 is driven to move in the vertical direction.
The horizontal detection seat 23 is welded at the bottom end of the vertical seat 22 and is perpendicular to the vertical seat 22, two slide ways 31 which are arranged at intervals along the front-back direction are integrally formed on the horizontal detection seat, a slide block 32 is assembled on the two slide ways 31 in a sliding manner, and a bridge detector 24 which is used for performing nondestructive detection on a bridge 34 is fixedly installed on the slide block 32. An electric push rod 33 is fixedly connected to the position, close to the vertical seat 22, of the horizontal detection seat 23, and the pushing end of the electric push rod 33 is connected with the sliding block 32, so that the bridge detector 24 moves left and right. In this embodiment, the bridge inspection instrument 24 and the electric push rod 33 are both in the prior art, and the structures thereof are not described herein again. In practical use, a controller in control connection with the rotating motor 8, the counterweight adjusting motor 11, the lifting driving motor 25, the electric push rod 33 and the bridge detector 24 can be installed on the top seat 21, the controller is electrified, corresponding operating buttons and a display are arranged on the controller, and therefore a person can stand on the bridge 34 to adjust the position of the bridge detector 24 without standing on a suspended hanging basket for measurement.
The utility model discloses a bridge counter weight detection device passes through horizontal hydraulic pressure telescopic boom 20, opens the adjustment of position on horizontal direction and vertical direction and circumferencial direction of bridge detector 24 can be realized to components such as rotating electrical machines 8, lift driving motor 25 and electric putter 33, utilizes bridge detector 24 to come automatic realization to the nondestructive test of 34 bottoms of bridge, need not the manual work and stands and measure in the hanging flower basket that hangs, and the security is high, and detection efficiency is high. In addition, under the drive of the counterweight adjusting motor 11, the counterweight group can move in the left-right direction, and under the drive of the rotating motor 8, the counterweight group can be circumferentially adjusted in position, so that the center of gravity of the whole counterweight detection device can be adjusted, and rollover can be avoided.
The utility model discloses a bridge counter weight detection device can realize automatic the detection, and the security is high, and detection efficiency is strong.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a bridge counter weight detection device which characterized in that includes:
the base is defined as the front-back direction, the width direction of the base is the left-right direction, the moving wheels which are distributed in a rectangular shape are arranged at the bottom of the base, and the left side and the right side of the base are respectively provided with supporting legs with adjustable heights;
the rotating disc is rotatably assembled at the top of the base;
the counterweight assembly comprises a counterweight groove coaxially connected to the top of the rotating disc and a counterweight group movably assembled in the counterweight groove in the left-right direction;
the top seat is installed in the counterweight groove and is coaxially arranged with the rotating disc;
the horizontal hydraulic telescopic arm is fixed on the top seat, and a driving end of the horizontal hydraulic telescopic arm is fixedly connected with an installation box;
the vertical adjusting assembly comprises a vertical seat and a vertical driving mechanism, the vertical seat is movably assembled on the installation box along the vertical direction, the vertical seat penetrates through the installation box, and the vertical driving mechanism is fixed on the installation box and is in transmission connection with the vertical seat so as to drive the vertical seat to move up and down;
and the horizontal detection seat is connected to the bottom end of the vertical seat and is perpendicular to the vertical seat, and the bridge detector is movably assembled on the horizontal detection seat along the length direction of the horizontal detection seat.
2. The bridge counterweight detection device of claim 1, wherein a counterweight adjusting motor is disposed in the counterweight groove beside the footstock, an output shaft of the counterweight adjusting motor is in transmission connection with a counterweight adjusting shaft, one end of the counterweight adjusting shaft, which is far away from the counterweight adjusting motor, is rotatably assembled on a groove wall of the counterweight groove, a counterweight adjusting block is in threaded connection with the counterweight adjusting shaft, and a vertical shaft is disposed on the counterweight adjusting block; the counterweight group comprises a plurality of counterweights sleeved on the vertical shaft.
3. The bridge counterweight detection device of claim 2 wherein the counterweight adjustment shafts are arranged in a rectangular pattern at the top of the counterweight adjustment blocks, and the counterweight groups correspond to the counterweight adjustment shafts one to one.
4. The bridge counterweight detection device according to claim 2 or 3, wherein a placing plate is arranged at the bottom of each counterweight group, the placing plate is sleeved on the corresponding vertical shaft, a buffer spring is arranged between the placing plate and the vertical shaft, the buffer spring is sleeved on the vertical shaft, one end of the buffer spring is fixedly connected with the counterweight adjusting block, and the other end of the buffer spring is fixedly connected with the placing plate.
5. The bridge counterweight detection device of any one of claims 1-3, wherein the mounting box comprises a box body and a U-shaped mounting seat connected to the left side of the box body, and the U-shaped mounting seat is fixedly connected with the horizontal hydraulic telescopic arm; the vertical driving mechanism comprises a lifting driving motor and a bevel gear transmission assembly, the lifting driving motor is fixed in the U-shaped mounting seat, an output shaft of the lifting driving motor extends in the left-right direction, one end of the output shaft of the lifting driving motor extends into the box body, the bevel gear transmission assembly comprises a driving bevel gear coaxially connected to the output shaft of the lifting driving motor and a driven bevel gear in meshing transmission with the driving bevel gear, and the driving bevel gear and the driven bevel gear are both positioned in the box body; the bottom of the driven bevel gear is coaxially connected with a hollow shaft, the hollow shaft is rotatably assembled on the box body, and the center of the driven bevel gear is fixedly connected with an adjusting nut; the vertical seat comprises a U-shaped seat body and a threaded shaft which is arranged in the U-shaped seat body in a rotation stopping assembly mode, the U-shaped seat body penetrates through the box body and is in guide sliding fit with the box body in the vertical direction, the threaded shaft is in threaded fit with the adjusting nut, and the threaded shaft penetrates through the hollow shaft and the box body.
6. The bridge counterweight detection device of any one of claims 1-3, wherein two slide ways are integrally formed on the horizontal detection seat and are arranged at intervals along the front-back direction, a slide block is slidably assembled on the slide ways, and the bridge detector is fixed on the top of the slide block.
7. The bridge counterweight detection device of claim 6, wherein an electric push rod is fixedly connected to the horizontal detection seat at a position close to the vertical detection seat, and a push end of the electric push rod is connected with the sliding block.
8. The bridge counterweight detection device according to any one of claims 1-3, wherein the bottom of the base is provided with an upward concave groove, the groove is detachably provided with a bottom plate, the bottom plate is provided with a rotating motor, and the rotating motor is in transmission connection with the rotating disk.
9. The bridge counterweight detection device of claim 8 wherein the left and right walls of the recess are provided with support plates, and the bottom plate comprises a U-shaped plate and sliding plates connected to the left and right ends of the top of the U-shaped plate, the sliding plates being slidably engaged with the corresponding support plates.
10. The bridge counterweight detection device according to any one of claims 1-3, wherein the left and right sides of the base are respectively connected with a support rod extending in the left-right direction, the end of the support rod is connected with a threaded sleeve whose axis extends in the up-down direction, the support leg comprises a T-shaped adjusting rod and a truncated cone-shaped support leg, and the adjusting rod is in threaded fit with the support rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222593248.6U CN218842862U (en) | 2022-09-29 | 2022-09-29 | Bridge counter weight detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222593248.6U CN218842862U (en) | 2022-09-29 | 2022-09-29 | Bridge counter weight detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218842862U true CN218842862U (en) | 2023-04-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222593248.6U Active CN218842862U (en) | 2022-09-29 | 2022-09-29 | Bridge counter weight detection device |
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| Country | Link |
|---|---|
| CN (1) | CN218842862U (en) |
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2022
- 2022-09-29 CN CN202222593248.6U patent/CN218842862U/en active Active
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