CN114649777A - Light-duty high-voltage line sag measurement carrying device - Google Patents
Light-duty high-voltage line sag measurement carrying device Download PDFInfo
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- CN114649777A CN114649777A CN202210247164.9A CN202210247164A CN114649777A CN 114649777 A CN114649777 A CN 114649777A CN 202210247164 A CN202210247164 A CN 202210247164A CN 114649777 A CN114649777 A CN 114649777A
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- 238000005259 measurement Methods 0.000 title claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims abstract description 29
- 230000001360 synchronised effect Effects 0.000 claims description 59
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920006324 polyoxymethylene Polymers 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 2
- 229930040373 Paraformaldehyde Natural products 0.000 claims 1
- -1 polyoxymethylene Polymers 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 description 13
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0608—Height gauges
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a light high-voltage wire sag measurement carrying device which comprises a pressing unit, a walking unit and a control box, wherein the pressing unit, the walking unit and the control box are respectively and fixedly connected with a supporting unit; a traveling unit for moving on a high voltage line; the pressing unit is used for pressing the walking unit on the upper end of the high-voltage wire; the control box is used for controlling the movement of the walking unit and providing power for the robot; the pressing units are provided with a plurality of groups and comprise pressure springs, guide optical axes, pressing wheels and pressing wheel supporting plates, and the guide optical axes are fixedly connected with the supporting units; the pressure spring is sleeved on the guide optical axis and guided by the guide optical axis; the pressing wheel supporting plate is sleeved on the guide optical axis and located at the upper end of the pressure spring, the pressing wheel is installed on the pressing wheel supporting plate, and the pressing force provided by the pressure spring enables the pressing wheel to be in press-connection with the lower end of the high-voltage wire. The advantages are that: according to the invention, the weight-reduced pressing unit and the walking unit are arranged to press and effectively clamp the high-voltage wire, so that the deflection of the high-voltage wire in the process of measuring the sag of the high-voltage wire is avoided.
Description
Technical Field
The invention relates to a light high-voltage wire sag measurement carrying device, and belongs to the technical field of power equipment.
Background
The high-voltage transmission line is a basic project in the construction of infrastructure in China, and the project has the characteristics of complexity and systematicness, particularly, if the process is not proper, the power supply stability of the high-voltage transmission line is inevitably influenced in the line tightening stage in the construction of the high-voltage transmission line. With the continuous development of the electric power industry in China, the high-voltage transmission line is used as an important carrier for connecting electric power enterprises and users, the reasonability, the scientificity and the safety of the installation of the transmission line are ensured, and the improvement of important indexes such as power supply quality and the like can be effectively promoted.
At present, a high-voltage wire commonly used in China is a steel-cored aluminum stranded wire, the high-voltage wire is suspended between two power towers, and the high-voltage power transmission wire falls down due to the influence of the gravity of the cable and the tension of the cable, so that the high-voltage power transmission wire is arc-shaped in the air. The high-voltage transmission line is extremely important in infrastructure construction in China, and the sag value can reflect whether the high-voltage line is safely, scientifically and reasonably erected. The sag measurement means that when the wire is tightened in a span, the sag of the wire is measured and judged by an instrument, so that the sag of the overhead wire meets the design requirement. Because the high-voltage transmission line is often erected in the air between the two power towers, the sag value is difficult to measure in a manual measurement mode, the risk of high-altitude measurement operation is extremely high, and the high-voltage line is deformed due to the heavy weight of adults for the high-voltage line, and is different from the sag value of the high-voltage line in a normal state, so that the accuracy of manually measuring the sag value cannot be ensured. If the sag measurement is carried out on the high-voltage power transmission line by totally depending on a manual measurement mode, the sag measurement method has the defects of low efficiency, high labor intensity and extremely high risk.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a light high-voltage wire sag measurement carrying device.
In order to solve the above technical problem, the present invention provides a light-weight carrying device for measuring sag of a high voltage line, comprising: the device comprises a supporting unit, a pressing unit, a walking unit and a control box;
the supporting unit is fixedly connected with the pressing unit, the walking unit and the control box respectively, and a radar is mounted on the supporting unit;
the radar collects data related to sag of the high-voltage wire and transmits the data to the control box;
the walking unit is used for moving on a high-voltage line;
the pressing unit is used for pressing the walking unit to the upper end of the high-voltage wire;
the control box is used for calculating the sag value of the high-voltage wire according to the sag related data of the high-voltage wire and controlling the movement of the walking unit;
the pressing unit comprises a pressure spring, a guide optical axis, a pressing wheel and a pressing wheel supporting plate, and the guide optical axis is fixedly connected with the supporting unit; the pressure spring is sleeved on the guide optical axis and guided by the guide optical axis; the pressing wheel supporting plate is sleeved on the guide optical axis and positioned at the upper end of the pressure spring, the pressing wheel is installed on the pressing wheel supporting plate, and the pressing force provided by the pressure spring presses the pressing wheel at the lower end of the high-voltage wire;
the walking unit comprises: the device comprises a direct current servo motor, a traveling wheel, a motor synchronous pulley, a synchronous belt and a traveling wheel synchronous pulley;
the direct current servo motor is fixedly connected with the supporting unit; the output shaft of the direct current servo motor is connected with the synchronous belt pulley of the direct current servo motor and is used for driving the synchronous belt pulley of the direct current servo motor to rotate when the output shaft of the direct current servo motor rotates; the walking wheel synchronous belt pulley is connected with the walking wheel and used for driving the walking wheel to rotate when the walking wheel synchronous belt pulley rotates; the synchronous belt is connected with the motor synchronous belt pulley and the walking wheel synchronous belt pulley and used for driving the walking wheel synchronous belt pulley to rotate when the motor synchronous belt pulley rotates.
Furthermore, the travelling wheels are made of polyformaldehyde high-strength plastics.
Further, the synchronous belt tensioning device comprises a tensioning wheel used for providing tensioning force for the synchronous belt.
Further, the supporting unit includes: the walking wheel connecting plate is arranged on the vertical supporting plate;
the walking wheel supporting plates are fixedly connected with the vertical supporting plates, and the walking wheel connecting plates are connected with the adjacent walking wheel supporting plates;
the walking wheel supporting plate and the vertical supporting plate are provided with shaft holes, the shaft holes are internally provided with rotating shafts which are rotatably connected with the shaft holes, and the rotating shafts are fixedly connected with walking wheels and walking wheel synchronous pulleys.
Further, the guide optical axis is vertically fixed on the vertical support plate through a connecting piece;
the direct current servo motor is fixed on the vertical supporting plate, an output hole is also formed in the vertical supporting plate, and the output shaft penetrates out of the output hole to be connected with the motor synchronous belt pulley; the motor synchronous belt pulley and the walking wheel synchronous belt pulley are arranged on one side of the vertical support plate, and the direct current servo motor and the walking wheel are arranged on the other side of the vertical support plate.
Furthermore, the safety device also comprises a plurality of safety ropes, and two ends of each safety rope are respectively connected with the supporting unit and the control box.
Furthermore, hanging rings are arranged on the supporting unit and the control box, and hooks used for being connected with the hanging rings are arranged at two ends of the safety rope.
Furthermore, the system also comprises an antenna, and the control box performs data and instruction interaction with the ground control end through the antenna.
Furthermore, a power supply is also arranged in the control box and used for providing power for the whole device.
The invention achieves the following beneficial effects:
according to the invention, the compaction unit and the walking unit are arranged to compact and effectively clamp the high-voltage wire, so that the high-voltage wire is prevented from deviating in the process of measuring the sag of the high-voltage wire; the walking unit is in a compact structure with a single pressing wheel group in the middle of double walking wheels, and the pressing wheel group reduces half weight; the walking device adopts a driving mode of a direct current motor and a synchronous belt to walk, and two walking wheels adopt a single-motor synchronous belt transmission driving mode, so that the weight of a walking unit is greatly reduced, and the walking device can accurately stop on line to perform work measurement; the pressing units are longitudinally moved in an optical axis guiding mode to be pressed, so that the danger of manual operation is avoided, the working efficiency is increased, and meanwhile, one group of pressing units is adopted, so that the problem that the pressing forces provided by a plurality of groups of pressing units are different in size is avoided; the safety rope is adopted to assist the line feeding, the working efficiency is increased, and the safety rope can also prevent the robot from falling off on the line.
Drawings
Fig. 1 is a schematic structural diagram of a sag measuring device for a high-voltage line according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a walking unit provided in an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a pressing unit provided in an embodiment of the present invention;
fig. 4 is a schematic diagram of a rear view structure provided in the embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a light high-voltage line sag measurement carrying device is characterized by comprising: the device comprises a supporting unit 20, a pressing unit 30, a walking unit 40 and a control box 60, wherein the supporting unit 20 is fixedly connected with the walking unit 40, the pressing unit 30 and the control box 60 respectively, and the walking unit 40 is used for moving on a high-voltage line; the pressing unit 30 is used for pressing the high-voltage wire; the control box 60 is fixedly connected with the support plate 20 and is mainly used for controlling the advancing and braking of the travelling wheels and providing power for the robot; the two ends of the safety rope 50 are connected with the supporting plate through hooks, and the safety rope is used for preventing the machine from falling off on the line.
The antenna 70 and the radar 80 are installed on the supporting unit 20, the radar 80 collects relevant data of the sag of the high-voltage wire and transmits the data to the control box, and the sag measuring and carrying device is particularly regarded as a right triangle approximately in terms of walking distance along the power transmission line, sag size of each section and projection distance of the robot on the horizontal plane. The included angle between the sag measurement carrying device and the horizontal plane is measured through a high-precision radar, then the walking distance of the sag measurement carrying device along a high-voltage line is measured, and finally information measured by the sag measurement carrying device and the high-voltage line is transmitted to a control box for analysis, processing and calculation to obtain the sag value of the power transmission line.
As shown in fig. 2 and 4, the traveling unit 40 includes a motor 401, a first traveling wheel 402, a motor synchronous pulley 404, a first tension wheel 406, a second tension wheel 408, a synchronous belt 405, a first traveling wheel synchronous pulley 409, and a second traveling wheel synchronous pulley 407, the motor 401 is fixedly connected to the support unit, and an output shaft of the motor is connected to the motor synchronous pulley 404; the first traveling wheel 402 and the second traveling wheel 403 are respectively connected with a first traveling wheel synchronous belt pulley 409 and a second traveling wheel synchronous belt pulley 407 and can rotate along with the first traveling wheel synchronous belt pulley 409 and the second traveling wheel synchronous belt pulley 407; the synchronous belt 405 is connected with the motor synchronous pulley 404, the first traveling wheel synchronous pulley 409 and the second traveling wheel synchronous pulley 407, and the motor 401 synchronously drives the first traveling wheel 402 and the second traveling wheel 403 to rotate through the motor synchronous pulley 404, the synchronous belt 405, the first traveling wheel synchronous pulley 409 and the second traveling wheel synchronous pulley 407 while rotating; the first tension pulley 406 and the second tension pulley 408 provide tension to the timing belt. The first traveling wheel 402 and the second traveling wheel 403 are made of polyformaldehyde high-strength plastic, so that the weight of the carrying device can be further reduced.
As shown in fig. 3, the pressing unit 30 includes a first compression spring 307, a first guide optical axis 306, a first pressing wheel 305, a second compression spring 301, a second guide optical axis 302, a second pressing wheel 303, and a pressing wheel support plate 304, and the first guide optical axis 306 and the second guide optical axis 302 are vertically fixed on the support unit 20 through a connecting member, respectively; the first pressure spring 307 and the second pressure spring 301 are respectively sleeved on the first guide optical axis 306 and the second guide optical axis 302 and are respectively guided by the first guide optical axis 306 and the second guide optical axis 302; through holes are formed in two ends of the pressing wheel supporting plate 304 and are respectively sleeved on the second guide optical axis 302 and the first guide optical axis 306, and pressing force in the pressing process is provided by a first pressing spring 307 and a second pressing spring 301; the first pinch roller 305 and the second pinch roller 303 are both mounted on the pinch roller support plate 304 and move together with the pinch roller mounting plate 304, wherein the first pinch roller 305 and the second pinch roller 303 are used for contacting the high-voltage wire 10.
The working process of the pressing unit 30: when the walking unit is used, the first compression spring 307 and the second compression spring 301 are compressed downwards through the compression wheel mounting plate 304 to form a space for placing the high-voltage wire 10, after the high-voltage wire 10 is placed in the space, the compression wheel mounting plate 304 is loosened, and the walking unit 40 can stably walk on the high-voltage wire by utilizing the rebounding force of the compressed first compression spring 307 and the compressed second compression spring 301.
As shown in fig. 2, 3 and 4, the supporting unit includes: a vertical supporting plate 202, a walking wheel supporting plate 201 and a walking wheel connecting plate 203;
the walking wheel supporting plates 201 are fixedly connected with the vertical supporting plate 202, and the walking wheel connecting plate 203 is connected with the adjacent walking wheel supporting plates 201;
axle holes are formed in the travelling wheel supporting plate 201 and the vertical supporting plate 202, a rotating shaft which is rotatably connected with the axle holes is arranged in the axle holes, and the rotating shaft is fixedly connected with a first travelling wheel 402 and a first travelling wheel synchronous belt pulley 409. In the same way, the second travelling wheel 403 and the second travelling wheel synchronous pulley 407 are fixedly connected through another rotating shaft.
The guide optical axis 302 is vertically fixed on the vertical support plate 202 through a connecting piece;
the motor 401 is fixed on the vertical support plate 202, an output hole is further formed in the vertical support plate 202, and an output shaft of the motor penetrates out of the output hole to be connected with the motor synchronous pulley 404.
The motor synchronous pulley 404 and the walking wheel synchronous pulley 407 are arranged on one side of the vertical support plate 202, and the motor 401 and the walking wheel are arranged on the other side of the motor. The weight of the two sides of the vertical supporting plate 202 is relatively balanced, and the number of parts on one side of the walking wheel is reduced, so that the pressing operation of the pressing unit 30 is facilitated.
As shown in fig. 1, a plurality of sets of safety ropes 50 are provided, and two ends of the safety ropes are respectively connected to the support unit 20 of the robot and the suspension loops on the control box 60 through hooks, so as to protect the robot to safely walk on line. The use of the safety cord 50 can minimize the weight while ensuring safety.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a light-duty high-voltage line sag measures carrying device which characterized in that includes: the device comprises a supporting unit, a pressing unit, a walking unit and a control box;
the supporting unit is fixedly connected with the pressing unit, the walking unit and the control box respectively, and a radar is mounted on the supporting unit;
the radar collects data related to sag of the high-voltage wire and transmits the data to the control box;
the walking unit is used for moving on a high-voltage line;
the pressing unit is used for pressing the walking unit to the upper end of the high-voltage wire;
the control box is used for calculating the sag value of the high-voltage wire according to the sag related data of the high-voltage wire and controlling the movement of the walking unit;
the pressing unit comprises a pressure spring, a guide optical axis, a pressing wheel and a pressing wheel supporting plate, and the guide optical axis is fixedly connected with the supporting unit; the pressure spring is sleeved on the guide optical axis and guided by the guide optical axis; the pressing wheel supporting plate is sleeved on the guide optical axis and positioned at the upper end of the pressure spring, the pressing wheel is installed on the pressing wheel supporting plate, and the pressing force provided by the pressure spring presses the pressing wheel at the lower end of the high-voltage wire;
the walking unit comprises: the device comprises a direct current servo motor, a traveling wheel, a motor synchronous pulley, a synchronous belt and a traveling wheel synchronous pulley;
the direct current servo motor is fixedly connected with the supporting unit; the output shaft of the direct current servo motor is connected with the synchronous belt pulley of the direct current servo motor and is used for driving the synchronous belt pulley of the direct current servo motor to rotate when the output shaft of the direct current servo motor rotates; the walking wheel synchronous belt pulley is connected with the walking wheel and used for driving the walking wheel to rotate when the walking wheel synchronous belt pulley rotates; the synchronous belt is connected with the motor synchronous belt pulley and the walking wheel synchronous belt pulley and used for driving the walking wheel synchronous belt pulley to rotate when the motor synchronous belt pulley rotates.
2. The light-duty high-voltage wire sag measurement carrying device according to claim 1, wherein the traveling wheels are made of polyoxymethylene high-strength plastic.
3. The light-duty high-voltage wire sag measurement carrying device according to claim 1, further comprising a tension pulley for providing tension to the synchronous belt.
4. The light-duty high-voltage wire sag measurement carrying device according to claim 1, wherein the supporting unit comprises: the walking wheel connecting plate is arranged on the vertical supporting plate;
the walking wheel supporting plates are fixedly connected with the vertical supporting plate, and the walking wheel connecting plate is connected with the adjacent walking wheel supporting plates;
the walking wheel supporting plate and the vertical supporting plate are provided with shaft holes, the shaft holes are internally provided with rotating shafts which are rotatably connected with the shaft holes, and the rotating shafts are fixedly connected with walking wheels and walking wheel synchronous pulleys.
5. The light-duty high-voltage wire sag measurement carrying device according to claim 4,
the guide optical axis is vertically fixed on the vertical supporting plate through a connecting piece;
the direct current servo motor is fixed on the vertical supporting plate, an output hole is also formed in the vertical supporting plate, and the output shaft penetrates out of the output hole to be connected with the motor synchronous belt pulley; the motor synchronous belt pulley and the walking wheel synchronous belt pulley are arranged on one side of the vertical support plate, and the direct current servo motor and the walking wheel are arranged on the other side of the vertical support plate.
6. The light high-voltage wire sag measurement carrying device according to claim 1, further comprising a plurality of safety ropes, wherein two ends of each safety rope are connected with the supporting unit and the control box respectively.
7. The light-duty high-voltage wire sag measurement carrying device according to claim 6, wherein hanging rings are arranged on the supporting unit and the control box, and hooks for connecting with the hanging rings are arranged at two ends of the safety rope.
8. The light-duty high-voltage wire sag measurement carrying device according to claim 1, further comprising an antenna, wherein the control box performs data and command interaction with a ground control terminal through the antenna.
9. The light-duty high-voltage wire sag measurement carrying device according to claim 1, wherein a power supply is further arranged in the control box and used for providing power for the whole device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210247164.9A CN114649777A (en) | 2022-03-14 | 2022-03-14 | Light-duty high-voltage line sag measurement carrying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210247164.9A CN114649777A (en) | 2022-03-14 | 2022-03-14 | Light-duty high-voltage line sag measurement carrying device |
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| Publication Number | Publication Date |
|---|---|
| CN114649777A true CN114649777A (en) | 2022-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210247164.9A Pending CN114649777A (en) | 2022-03-14 | 2022-03-14 | Light-duty high-voltage line sag measurement carrying device |
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| CN (1) | CN114649777A (en) |
Citations (8)
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|---|---|---|---|---|
| CN102447232A (en) * | 2010-09-30 | 2012-05-09 | 深圳市通力信科技有限公司 | Conductor and ground wire traveling vehicle |
| CN205701223U (en) * | 2016-04-22 | 2016-11-23 | 泉州智勇达电气有限责任公司 | The running gear of overhead transmission line automatic spraying robot |
| CN107257106A (en) * | 2017-07-03 | 2017-10-17 | 国网山东省电力公司曹县供电公司 | Power matching network rushes to repair foreign matter remover |
| CN109080725A (en) * | 2018-08-20 | 2018-12-25 | 国网北京市电力公司 | Robot ambulation structure and robot with it |
| CN110350439A (en) * | 2019-06-24 | 2019-10-18 | 国电南瑞科技股份有限公司 | A kind of ultra-high-tension power transmission line inspection robot compression wheel apparatus |
| CN110932177A (en) * | 2019-12-27 | 2020-03-27 | 安徽送变电工程有限公司 | Walking trolley for sag observation |
| CN211994268U (en) * | 2020-05-06 | 2020-11-24 | 海宁市力佳隆门窗密封条有限公司 | Ultrasonic welding equipment for sealing material |
| CN113948999A (en) * | 2021-09-29 | 2022-01-18 | 江苏省送变电有限公司 | High-voltage line sag measurement carrying device |
-
2022
- 2022-03-14 CN CN202210247164.9A patent/CN114649777A/en active Pending
Patent Citations (8)
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|---|---|---|---|---|
| CN102447232A (en) * | 2010-09-30 | 2012-05-09 | 深圳市通力信科技有限公司 | Conductor and ground wire traveling vehicle |
| CN205701223U (en) * | 2016-04-22 | 2016-11-23 | 泉州智勇达电气有限责任公司 | The running gear of overhead transmission line automatic spraying robot |
| CN107257106A (en) * | 2017-07-03 | 2017-10-17 | 国网山东省电力公司曹县供电公司 | Power matching network rushes to repair foreign matter remover |
| CN109080725A (en) * | 2018-08-20 | 2018-12-25 | 国网北京市电力公司 | Robot ambulation structure and robot with it |
| CN110350439A (en) * | 2019-06-24 | 2019-10-18 | 国电南瑞科技股份有限公司 | A kind of ultra-high-tension power transmission line inspection robot compression wheel apparatus |
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| CN211994268U (en) * | 2020-05-06 | 2020-11-24 | 海宁市力佳隆门窗密封条有限公司 | Ultrasonic welding equipment for sealing material |
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