CN110823062B - Overhead cable detection device - Google Patents
Overhead cable detection device Download PDFInfo
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- CN110823062B CN110823062B CN201911040202.8A CN201911040202A CN110823062B CN 110823062 B CN110823062 B CN 110823062B CN 201911040202 A CN201911040202 A CN 201911040202A CN 110823062 B CN110823062 B CN 110823062B
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
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Abstract
The invention provides an overhead cable detection device, and relates to the technical field of overhead cable detection. The invention has the beneficial effects that: under the effect of centre gripping diameter measuring mechanism, when needs examine the bore of its overhead cable when leaving the factory, then can put out a lesson of its cable between two triangle splint, later with the hand promote two triangle splint slide on the first spout that the connection piece connected through the bottom was seted up on the connection plate top, and the connection piece removes in the first through-groove of seting up on the connection plate top simultaneously, and first slider is at gliding in-process simultaneously, the gyro wheel that the flexible interior pole of the fixed outer pole that the spliced pole that drives the wall connection was connected rolls on the upper and lower lateral wall that the groove was run through to the second.
Description
Technical Field
The invention relates to the technical field of overhead cable detection, in particular to an overhead cable detection device.
Background
The overhead cable is the most common high-voltage electricity transmission mode used in the power engineering, when the overhead cable is produced and leaves the factory, the diameter of a high-voltage wire and the caliber of an insulating leather sheath need to be accurately measured, and whether data meet the scope of national cable standards or not can be obtained through measurement.
The existing overhead cable detection device is not provided with a mechanism for effectively clamping two side walls of a cable, a mechanism for protecting the device and effectively fixing the device, a mechanism for conveniently holding the device when in use so as to detect the diameter of the cable, and a mechanism for effectively folding and carrying the holding mechanism.
Disclosure of Invention
Technical problem to be solved
The invention provides an overhead cable detection device, which solves the technical problems that the conventional overhead cable detection device is not provided with a mechanism for effectively clamping two side walls of a cable, a mechanism for protecting the device and effectively fixing the device, a mechanism for conveniently holding the device when in use so as to detect the diameter of the cable, and a mechanism for effectively folding the holding mechanism so as to be convenient to carry.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
an overhead cable detection device comprising: the hinge is fixedly connected to the outer part of the connecting plate, and a cover body is fixedly arranged on the outer side of the hinge;
the inner part of the connecting plate is slidably connected with a clamping and diameter measuring mechanism, and a locking mechanism is arranged between the connecting plate and the cover body;
the bottom of the connecting plate is connected with a folding holding mechanism.
Furthermore, the connecting plate and the cover body form a rotating structure through a hinge, and the shape of the connecting plate is matched with that of the cover body.
Further, the inside triangle splint that is included of centre gripping diameter measuring mechanism, and triangle splint bottom end fixedly connected with connection piece, connection piece outside movable mounting has first through groove, and the first slider of connection piece bottom fixedly connected with, first slider outside sliding connection has first spout, and first slider outer wall fixedly connected with spliced pole, the second has been seted up to first spout outer wall and has been run through the groove, the fixed outer pole of the outside fixedly connected with of spliced pole, and fixed outer pole inner wall has seted up the second spout, the inboard sliding connection of second spout has the second slider, and the flexible interior pole of the outside fixedly connected with of second slider, the inside recess that has seted up of flexible interior pole, and recess inner wall fixedly connected with fixed column, the outside movable sleeve of fixed column is equipped with the gyro wheel, fixed outer pole internally mounted has the spring.
Furthermore, the triangular clamping plate and the connecting plate block form a sliding structure through the connecting sheet, the first through groove, the first sliding block and the first sliding groove, and the connecting plate block and the first through groove form an integrated structure through the open groove.
Furthermore, the roller forms an elastic structure through the telescopic inner rod, the spring and the fixed outer rod, and the telescopic inner rod forms a telescopic structure through the second sliding block, the second sliding groove and the fixed outer rod.
Further, locking mechanism is inside including fixed plate, and fixed plate has seted up the opening in the bottom, the arc wall has been seted up to fixed plate outer wall, and fixed plate bottom is connected with the rotation axis, the rotation axis external connection has the semicircle cardboard, and semicircle cardboard outside fixed mounting has the card post.
Furthermore, the semicircle cardboard passes through the rotation axis and constitutes rotating-structure with the connection plate, and the semicircle cardboard passes through opening, semicircle cardboard, arc wall, card post and fixed plate constitution chucking structure.
Further, folding inside including the third spout of controlling the mechanism, and the inside sliding connection of third spout has a third slider, the jack has been seted up to third slider inside, and the first loose axle is installed to third slider bottom, the first loose axle outside is connected with the pole of holding, and controls pole externally mounted and have the second loose axle, third spout inner wall fixedly connected with inserts the post.
Furthermore, the holding rod and the third sliding block form a movable structure through the first movable shaft, and the first movable shaft and the connecting plate form a sliding structure through the third sliding block and the third sliding groove.
Furthermore, the third slider passes through the jack, inserts the post and constitutes the compact structure with the third spout, and the third slider passes through the trompil and constitutes the integral structure with the jack.
(III) advantageous effects
The invention provides an overhead cable detection device. Compared with the prior art, the method has the following beneficial effects:
1. the overhead cable detection device can put a small section of the cable between two triangular clamping plates under the action of a clamping and diameter measuring mechanism when the caliber of the overhead cable is required to be detected when the overhead cable leaves factory, then the two triangular clamping plates are pushed by hands to slide on a first sliding groove arranged at the top end of a connecting plate through a first sliding block connected with a connecting sheet connected at the bottom end, the connecting sheet moves in a first through groove arranged at the top end of the connecting plate, and simultaneously the first sliding block drives a roller connected with a telescopic inner rod in a fixed outer rod connected with a connecting post connected with an outer wall to roll on the upper side wall and the lower side wall of a second through groove in the sliding process, and the telescopic inner rod can be tightly abutted against the two side walls of the second through groove through the elastic action of a spring under the reverse action of the spring inside the telescopic inner rod when the sliding of the telescopic inner rod is stopped, thereby make the triangular splint slide the in-process that stops, can fix rapidly, then two triangular splint of being convenient for press from both sides its cable tightly, and just can read the diameter of its cable fast through the distance between two triangular splint relative faces and according to the scale mark that sets up on the connection plate simultaneously to the work efficiency that detection staff detected its cable diameter has been improved.
2. The overhead cable detection device has the advantages that under the action of the locking mechanism, when the device is not used, the triangular clamping plate connected with the connecting plate block can be covered by the cover body through the hinge, the sponge layer is arranged in the cover body and can protect the triangular clamping plate, the damage to the outside of the triangular clamping plate is prevented, if dirt is caused, the clamping surface of the triangular clamping plate can be uneven due to the dirt, so that the accuracy of the detection of the cable diameter is influenced, when the cover body and the connecting plate block are required to be fixed, the semicircular clamping plate can be rotated through the clamping column, the semicircular clamping plate enters the opening formed in the bottom end of the fixing plate block, and meanwhile, the clamping column enters the outer wall of the fixing plate block to form the arc-shaped groove, so that the cover body and the connecting plate block are fixedly locked and the cover body is convenient to cover, when the device is not used, the device is protected, and the cleanliness of the device is kept.
3. This overhead cable detection device, under the effect of folding the mechanism of controlling, when needs are folding its device, then can with its two third sliders that control the pole and connect through the first loose axle of connection slip to the opposite direction of third spout to make two control the pole and rotate through first loose axle and slowly be parallel state with it connection plate piece to two control the pole simultaneously and pass through the second loose axle and rotate and slowly form a straight line, and when two control the pole and form a straight line completely. Then the jack that the third slider was seted up inside this moment inserts with its third spout inner wall fixed connection's the post of inserting and closes to make two holding rods obtain fixed, cover its connecting plate piece fixedly through the lid, and hold the pole and fold back and can be convenient for the staff to carry its the device on one's side, be convenient for carry out the detection work everywhere to its built on stilts cable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of an overall overhead cable detection device according to the present invention;
FIG. 2 is a schematic view of the locking mechanism of the present invention in an expanded configuration;
FIG. 3 is an enlarged schematic view of the structure of the present invention at A;
FIG. 4 is an enlarged schematic view of the present invention at B;
FIG. 5 is an enlarged schematic view of the present invention at C.
In the figure: 1. connecting the plates; 2. a hinge; 3. a cover body; 4. clamping the diameter measuring mechanism; 401. a triangular splint; 402. connecting sheets; 403. a first through groove; 404. a first slider; 405. a first chute; 406. a second through groove; 407. connecting columns; 408. fixing the outer rod; 409. a second chute; 410. a second slider; 411. a telescopic inner rod; 412. a groove; 413. fixing a column; 414. a roller; 415. a spring; 5. a locking mechanism; 501. fixing the plate; 502. an opening; 503. an arc-shaped slot; 504. a rotating shaft; 505. a semicircular clamping plate; 506. clamping the column; 6. a folding holding mechanism; 601. a third chute; 602. a third slider; 603. a jack; 604. a first movable shaft; 605. a holding rod; 606. a second movable shaft; 607. and (5) inserting the column.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides an overhead cable detection device, and solves the technical problems that the conventional overhead cable detection device is not provided with a mechanism for effectively clamping two side walls of a cable, a mechanism for protecting the device and effectively fixing the device, a mechanism for conveniently holding the device during use so as to detect the diameter of the cable, and a mechanism for effectively folding a holding mechanism so as to be convenient to carry.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
Example 1: referring to fig. 1 to 5, an overhead cable inspection apparatus includes: the connecting plate 1, the hinge 2, the cover body 3, the clamping and diameter measuring mechanism 4, the triangular clamping plate 401, the connecting sheet 402, the first through groove 403, the first sliding block 404, the first sliding groove 405, the second through groove 406, the connecting column 407, the fixed outer rod 408, the second sliding groove 409, the second sliding block 410, the telescopic inner rod 411, the groove 412, the fixed column 413, the roller 414, the spring 415, the locking mechanism 5, the fixed plate 501, the opening 502, the arc-shaped groove 503, the rotating shaft 504, the semicircular clamping plate 505, the clamping column 506, the folding holding mechanism 6, the third sliding groove 601, the third sliding block 602, the jack 603, the first movable shaft 604, the holding rod 605, the second movable shaft 606 and the inserting column 607, the hinge 2 is fixedly connected to the outside of the connecting plate 1, and the cover body 3 is fixedly installed on the outside the hinge 2;
the inside of the connecting plate 1 is slidably connected with a clamping and diameter measuring mechanism 4, a locking mechanism 5 is arranged between the connecting plate 1 and the cover body 3, and the clamping and diameter measuring mechanism 4 can rapidly clamp a cable to measure the diameter;
the bottom of the connecting plate block 1 is connected with a folding holding mechanism 6, the folding holding mechanism 6 can hold the whole device when in use, and can be folded conveniently to be carried by workers when not in use.
Further, connecting plate 1 constitutes revolution mechanic through hinge 2 and lid 3, and the shape of connecting plate 1 is identical with the shape of lid 3, and lid 3 covers the triangle splint 401 that its connecting plate 1 is connected through hinge 2 to lid 3 is inside to be provided with the sponge layer, can protect its triangle splint 401.
The clamping diameter measuring mechanism 4 comprises a triangular clamping plate 401 inside, a connecting sheet 402 is fixedly connected to the bottom end of the triangular clamping plate 401, a first through groove 403 is movably installed on the outer side of the connecting sheet 402, a first sliding block 404 is fixedly connected to the bottom end of the connecting sheet 402, a first sliding groove 405 is slidably connected to the outer side of the first sliding block 404, a connecting column 407 is fixedly connected to the outer wall of the first sliding block 404, a second through groove 406 is formed in the outer wall of the first sliding groove 405, a fixed outer rod 408 is fixedly connected to the outer portion of the connecting column 407, a second sliding groove 409 is formed in the inner wall of the fixed outer rod 408, a second sliding block 410 is slidably connected to the inner side of the second sliding groove 409, a telescopic inner rod 411 is fixedly connected to the outer portion of the second sliding block 410, a groove 412 is formed in the inner portion of the telescopic inner rod 411, a fixed column 413 is fixedly connected to the inner wall of the groove 412, a roller 414 is movably sleeved on the outer portion of the fixed outer rod 413, a spring 415 is installed in the inner portion of the fixed outer rod 408, and the telescopic inner rod 411 can move on the second sliding block 410 on the second sliding groove 409 The sliding and simultaneously telescopic inner rod 411 can perform an elastic telescopic movement between the spring 415 and the fixed outer rod 408.
The triangular clamping plates 401 form a sliding structure with the connecting plate 1 through the connecting sheet 402, the first through groove 403, the first sliding block 404, the first sliding groove 405, the connecting plate 1 forms an integrated structure with the first through groove 403 through a slot, and the two triangular clamping plates 401 are manually pushed to slide on the first sliding groove 405 formed in the top end of the connecting plate 1 through the first sliding block 404 connected with the connecting sheet 402 connected with the bottom end.
The roller 414 forms an elastic structure with the fixed outer rod 408 through the telescopic inner rod 411, the spring 415, and the telescopic inner rod 411 forms a telescopic structure with the fixed outer rod 408 through the second slider 410, the second chute 409, and the first slider 404 drives the roller 414 connected with the telescopic inner rod 411 in the fixed outer rod 408 connected with the connection column 407 connected with the outer wall to roll on the upper and lower side walls of the second through groove 406 in the sliding process.
The folding holding mechanism 6 includes a third sliding chute 601 inside, a third slider 602 is slidably connected inside the third sliding chute 601, a jack 603 is formed inside the third slider 602, a first movable shaft 604 is installed at the bottom end of the third slider 602, a holding rod 605 is connected to the outer side of the first movable shaft 604, a second movable shaft 606 is installed outside the holding rod 605, an insertion column 607 is fixedly connected to the inner wall of the third sliding chute 601, and the two holding rods 605 can slide in the opposite direction of the third sliding chute 601 through the third slider 602 connected to the connected first movable shaft 604.
The holding rods 605 form a movable structure through the first movable shaft 604 and the third slide block 602, the first movable shaft 604 forms a sliding structure through the third slide block 602 and the third slide groove 601 and the connecting plate 1, the two holding rods 605 rotate through the first movable shaft 604 to be gradually parallel to the connecting plate 1, and simultaneously the two holding rods 605 rotate through the second movable shaft 606 to be gradually formed into a straight line.
The third sliding block 602 forms a tight structure with the third sliding chute 601 through the insertion hole 603, the insertion post 607, and the third sliding block 602 forms an integrated structure with the insertion hole 603 through the opening, so that the insertion hole 603 formed in the third sliding block 602 is inserted into the insertion post 607 fixedly connected with the inner wall of the third sliding chute 601 after the two holding rods 605 slowly form a straight line through the rotation of the second movable shaft 606.
According to the working principle of the embodiment of the invention, a worker can unfold the holding rods 605 of the device by folding the holding mechanism 6, so that the two holding rods 605 are aligned and can be conveniently held by the worker, then the worker can rotate the semicircular clamping plate 505 by pulling the clamping column 506 through the rotating shaft 504, so that the semicircular clamping plate 505 is separated from the opening 502 formed at the bottom end of the fixed plate 501, so that the worker can unfold the cover body 3 with the connecting plate 1 through the hinge 2, then the diameter of the overhead cable is detected by the clamping diameter measuring mechanism 4, in the process, the two triangular clamping plates 401 are pushed by hand to slide on the first sliding groove 405 formed at the top end of the connecting plate 1 through the first sliding block 404 connected with the connecting piece 402 connected at the bottom end, and meanwhile, the connecting piece 402 moves in the first through groove 403 formed at the top end of the connecting plate 1, meanwhile, in the sliding process of the first slider 404, the roller 414 connected with the telescopic inner rod 411 in the fixed outer rod 408 connected with the connecting column 407 connected with the outer wall is driven to roll on the upper and lower side walls of the second through groove 406, and under the reaction of the spring 415 in the telescopic inner rod 411, when the sliding is stopped, the telescopic inner rod 411 can tightly abut against the two side walls of the second through groove 406 through the roller 414 under the elastic action of the spring 415, so that the triangular clamping plates 401 can be rapidly fixed in the sliding to stopping process, the cables can be conveniently clamped by the two triangular clamping plates 401, and the diameters of the cables can be rapidly read according to the scale lines arranged on the connecting plate block 1 through the distance between the opposite surfaces of the two triangular clamping plates 401, thereby completing the working principle of the device.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. An overhead cable detection device, comprising: the connecting plate block (1), the hinge (2) is fixedly connected to the outer part of the connecting plate block (1), and the cover body (3) is fixedly installed on the outer side of the hinge (2);
a clamping and diameter measuring mechanism (4) is connected in the connecting plate block (1) in a sliding manner, and a locking mechanism (5) is arranged between the connecting plate block (1) and the cover body (3);
the bottom of the connecting plate (1) is connected with a folding holding mechanism (6);
the connecting plate block (1) and the cover body (3) form a rotating structure through the hinge (2), and the shape of the connecting plate block (1) is matched with that of the cover body (3);
the clamping and diameter measuring mechanism (4) comprises a triangular clamping plate (401) inside, the bottom end of the triangular clamping plate (401) is fixedly connected with a connecting sheet (402), the outer side of the connecting sheet (402) is movably provided with a first through groove (403), the bottom end of the connecting sheet (402) is fixedly connected with a first sliding block (404), the outer side of the first sliding block (404) is slidably connected with a first sliding groove (405), the outer wall of the first sliding block (404) is fixedly connected with a connecting column (407), the outer wall of the first sliding groove (405) is provided with a second through groove (406), the outer part of the connecting column (407) is fixedly connected with a fixed outer rod (408), the inner wall of the fixed outer rod (408) is provided with a second sliding groove (409), the inner side of the second sliding groove (409) is slidably connected with a second sliding block (410), the outer part of the second sliding block (410) is fixedly connected with a telescopic inner rod (411), and a groove (412) is formed in the telescopic inner rod (411), and fixed column (413) is fixedly connected with in recess (412) inner wall, the outside activity cover of fixed column (413) is equipped with gyro wheel (414), fixed outer pole (408) internally mounted has spring (415).
2. An overhead cable detection device as claimed in claim 1, wherein the triangular clamp plate (401) forms a sliding structure with the connection plate (1) through the connection piece (402), the first through groove (403), the first slide block (404), the first slide groove (405), and the connection plate (1) forms an integrated structure with the first through groove (403) through the slot.
3. The overhead cable detecting device according to claim 1, wherein the roller (414) forms an elastic structure with the fixed outer rod (408) through the telescopic inner rod (411), the spring (415), and the telescopic inner rod (411) forms a telescopic structure with the fixed outer rod (408) through the second slider (410), the second sliding groove (409).
4. The overhead cable detection device according to claim 1, wherein the locking mechanism (5) comprises a fixing plate (501) inside, an opening (502) is formed at the bottom end of the fixing plate (501), an arc-shaped groove (503) is formed in the outer wall of the fixing plate (501), a rotating shaft (504) is connected to the bottom of the fixing plate (501), a semicircular clamping plate (505) is connected to the outside of the rotating shaft (504), and a clamping column (506) is fixedly mounted on the outside of the semicircular clamping plate (505).
5. An overhead cable detection device as claimed in claim 4, wherein the semi-circular catch plate (505) forms a rotation structure with the connection plate (1) through the rotation shaft (504), and the semi-circular catch plate (505) forms a clamping structure with the fixing plate (501) through the opening (502), the semi-circular catch plate (505), the arc-shaped groove (503), the clamping column (506).
6. The overhead cable detection device according to claim 1, wherein a third sliding groove (601) is included in the folding holding mechanism (6), a third sliding block (602) is slidably connected to the inside of the third sliding groove (601), an insertion hole (603) is formed in the third sliding block (602), a first movable shaft (604) is installed at the bottom end of the third sliding block (602), a holding rod (605) is connected to the outer side of the first movable shaft (604), a second movable shaft (606) is installed outside the holding rod (605), and an insertion column (607) is fixedly connected to the inner wall of the third sliding groove (601).
7. An overhead cable inspection device as claimed in claim 6, wherein the holding rod (605) is movably connected to the third slide block (602) via the first movable shaft (604), and the first movable shaft (604) is slidably connected to the connection plate (1) via the third slide block (602) and the third sliding groove (601).
8. An overhead cable detection device as claimed in claim 6, wherein the third slider (602) forms a fastening structure with the third sliding groove (601) through the insertion hole (603), the insertion post (607), and the third slider (602) forms an integrated structure with the insertion hole (603) through the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911040202.8A CN110823062B (en) | 2019-10-29 | 2019-10-29 | Overhead cable detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911040202.8A CN110823062B (en) | 2019-10-29 | 2019-10-29 | Overhead cable detection device |
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| CN110823062A CN110823062A (en) | 2020-02-21 |
| CN110823062B true CN110823062B (en) | 2021-08-17 |
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| CN201911040202.8A Active CN110823062B (en) | 2019-10-29 | 2019-10-29 | Overhead cable detection device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112461084A (en) * | 2020-10-26 | 2021-03-09 | 深圳市成天泰电缆实业发展有限公司 | Diameter detection device for manufacturing electric wires and cables |
| CN112361915A (en) * | 2020-10-30 | 2021-02-12 | 长丰大成信息科技有限公司 | Line inspection device and inspection method for network security |
| CN114001623A (en) * | 2021-09-15 | 2022-02-01 | 陈伟 | Rope fatigue detector |
| CN113720287A (en) * | 2021-09-18 | 2021-11-30 | 清远市合意氟塑电线有限公司 | Detection equipment for cable processing |
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| CN211317091U (en) * | 2020-03-19 | 2020-08-21 | 山东正维勘察测绘有限公司 | Multi-functional scale that easily carries |
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| US2537473A (en) * | 1946-08-01 | 1951-01-09 | Richard W Mccusker | Hole center scale |
| CN2339461Y (en) * | 1998-08-19 | 1999-09-22 | 贯新工业股份有限公司 | Single-hand folding operation device for folding hand-cart |
| CN206485486U (en) * | 2016-12-29 | 2017-09-12 | 深圳市创行智能科技有限公司 | A kind of handle folding mechanism and folded bicycle |
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| CN211317091U (en) * | 2020-03-19 | 2020-08-21 | 山东正维勘察测绘有限公司 | Multi-functional scale that easily carries |
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| CN110823062A (en) | 2020-02-21 |
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