CN109301773A - A kind of macromolecule lined steel type trough type bridge frame - Google Patents
A kind of macromolecule lined steel type trough type bridge frame Download PDFInfo
- Publication number
- CN109301773A CN109301773A CN201811115743.8A CN201811115743A CN109301773A CN 109301773 A CN109301773 A CN 109301773A CN 201811115743 A CN201811115743 A CN 201811115743A CN 109301773 A CN109301773 A CN 109301773A
- Authority
- CN
- China
- Prior art keywords
- block
- plate
- bottom plate
- groups
- fixture block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920002521 macromolecule Polymers 0.000 title claims abstract description 15
- 239000002436 steel type Substances 0.000 title claims abstract description 15
- 230000003447 ipsilateral effect Effects 0.000 claims abstract description 5
- 239000011521 glass Substances 0.000 claims description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 238000009434 installation Methods 0.000 claims description 17
- 238000005192 partition Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 238000005538 encapsulation Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002633 protecting effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
Classifications
-
- 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
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
- H02G3/0487—Tubings, i.e. having a closed section with a non-circular cross-section
-
- 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
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/03—Cooling
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A kind of macromolecule lined steel type trough type bridge frame, including rack slot, and it is mounted on the frame lid of rack slot upper port, the rack slot includes bottom plate, the side plate of the sizes such as two groups, bottom plate two sides upper surface is respectively equipped with limited block along its length, fixed block is separately installed on bottom plate on the inside of the limited block both ends, fixing axle is installed between two groups of ipsilateral fixed blocks of the bottom plate, side plate end side described in two groups is separately mounted in the fixing axle of bottom plate two sides, the limited block side is equipped with the first concave card slot, the frame lid bottom surface both side is respectively equipped with fixture block, the fixture block medial surface is equipped with arc convex corresponding with the first concave card slot, side plate another side side described in two groups is respectively equipped with fixture block, the fixture block side is equipped with the second concave card slot corresponding with the arc convex of fixture block, the present invention during transportation can paste side plate doubling and bottom plate With reduction kerve occupied space, convenient for whole Transporting.
Description
Technical field
The present invention relates to cable installation apparatus fields, and in particular to a kind of macromolecule lined steel type trough type bridge frame.
Background technique
Trough type bridge frame is also channel-type cable bridge, is a kind of Totally-enclosed-type cable testing bridge, it is best suited for laying computer
Cable, communication cable, thermocouple cable and control cable of other Highly Sensitive Systems etc., can either be dry for control cable shield
It disturbs, and certain protecting effect can be formed to cable under the harsh conditions such as fire or heavy corrosion environment.
Traditional trough type bridge frame can not be folded in kerve in transport or installation process and take up space greatly, not readily transportable.
Summary of the invention
What the present invention to be overcome is that trough type bridge frame kerve is not foldable, and occupied space is excessive in transportational process, and transport is not
Convenient problem, it is therefore an objective to which a kind of macromolecule lined steel type trough type bridge frame is provided.
A kind of macromolecule lined steel type trough type bridge frame, including rack slot, and it is mounted on the frame lid of rack slot upper port, the rack slot
Side plate including bottom plate, the sizes such as two groups, bottom plate two sides upper surface is respectively equipped with limited block, the limit along its length
It is separately installed with fixed block on bottom plate on the inside of block both ends, fixing axle is installed between two groups of ipsilateral fixed blocks of the bottom plate, two
The group side plate end side is separately mounted in the fixing axle of bottom plate two sides, and the limited block side is equipped with the first concave card slot, institute
It states frame lid bottom surface both side and is respectively equipped with fixture block, the fixture block medial surface is equipped with arc convex corresponding with the first concave card slot, and two
Group side plate another side side is respectively equipped with fixture block, and the fixture block side is equipped with corresponding with the arc convex of fixture block second
Concave card slot, frame base face are equipped with bracer, and the spacing between the bracer two sides and two groups of fixture blocks of frame lid side is equal to side
The sum of plate and fixture block thickness.
Further, the fixed block includes horizontal stripe block, vertical bar block, the horizontal stripe block and vertical bar block vertical welding, described
Horizontal stripe block level is welded on plate upper surface, and the vertical bar block is concordant with limited block medial surface to be welded on limited block, described solid
Dead axle is mounted on vertical bar block, and horizontal stripe block top is equipped with glass steel frame plate.
Further, the side plate is connected and fixed axis one end and is equipped with top plate, is hinged with if the top plate bottom end is equidistant
Solid fixed pole, for the fixed link between glass steel frame plate and bottom plate, fixed link other end end point is equipped with mounting groove,
Hinged kelly one end inside the mounting groove, the kelly middle part are connected with extruding spring, the extruding spring other end connection
Inside mounting groove, glass steel frame plate bottom surface is equipped with locating slot corresponding with kelly.
Further, mounting hole, the corresponding installation of the backplate surface are equipped on the bottom plate between two adjacent groups fixed link
Hole site is welded with installation set, and installation set side ring has positioning ring, and the glass steel frame plate is located at positioning ring top, described
Installation set passes through glass steel frame plate and is connected through a screw thread locking sleeve gasket.
Further, the side plate is equipped with venthole, and the corresponding ventilation hole site of the side plate lateral surface is welded with partition.
The beneficial effects of the present invention are:
The configuration of the present invention is simple installs fixing axle by installing fixed block respectively in kerve bottom plate two sides on fixed block,
By the way that two groups of side plates are separately fixed in fixed link, side plate can be rotated around fixed link, when during transportation can be by side plate
Doubling and bottom plate patch and, kerve occupied space is reduced, and using the limited block fixed frame lid of bottom plate two sides, convenient for whole Transporting.
By including horizontal stripe block, vertical bar block in fixed block, fixing axle is mounted on vertical bar block, and horizontal stripe block top is equipped with glass
Glass steel frame plate completely cuts off bottom plate and cable, avoids cable and contacts baseplate, increases the protecting effect to cable.
Top plate is installed by being connected and fixed axis one end in side plate, top plate bottom end is equidistant to be hinged with several fixed links, Gu
For fixed pole between glass steel frame plate and bottom plate, fixed link other end end point is equipped with mounting groove, hinged kelly inside mounting groove
One end, kelly middle part are connected with extruding spring, squeeze the spring other end and are connected to inside mounting groove, glass steel frame plate bottom surface is equipped with
Locating slot corresponding with kelly, is stuck in inside the locating slot of glass steelframe bottom using kelly, side plate is fixed, and side is increased
The stability of plate installation.
By being equipped with venthole on side plate, the corresponding ventilation hole site of side plate lateral surface is welded with partition, convenient in kerve
Portion's heat dissipation, prevents external corrosion object from being entered in kerve not by venthole using partition.
Detailed description of the invention
Fig. 1 is side plate expanding structure figure of the invention；
Fig. 2 is side plate closing structure graph structure figure of the invention；
Fig. 3 is part A enlarged drawing in Fig. 1 of the invention；
Fig. 4 is lateral plate structure figure of the invention；
In figure: 1. rack slots；2. frame lid；12. bottom plate；13. side plate；21. limited block；22. fixed block；23. fixing axle；31.
First concave card slot；32. fixture block；33. fixture block；34. the second concave card slot；35. bracer；41. horizontal stripe block；42. vertical bar block；43.
Glass steel frame plate；51. top plate；52. fixed link；53. mounting groove；54. kelly；55. squeezing spring；56. locating slot；61. installation
Hole；62. installation set；63. positioning ring；64. locking sleeve gasket；71. venthole；72. partition.
Specific embodiment
It is easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
It is specifically illustrating, the present invention is further explained.
Embodiment 1
As shown in Figure 1, Figure 2；A kind of macromolecule lined steel type trough type bridge frame, including rack slot 1, and be mounted in rack slot 1
The frame lid 2 of port, rack slot 1 include the side plate 13 of the sizes such as 12, two groups of bottom plate, and 12 two sides upper surface of bottom plate is distinguished along its length
Equipped with limited block 21, it is separately installed with fixed block 22 on the bottom plate 12 on the inside of 21 both ends of limited block, bottom plate 12 ipsilateral two groups solid
Determine that fixing axle 23 is installed between block 22, two groups of 13 end sides of side plate are separately mounted in the fixing axle 23 of 12 two sides of bottom plate, limited block
21 sides are equipped with the first concave card slot 31, and 2 bottom surface both side of frame lid is respectively equipped with fixture block 32,32 medial surface of fixture block be equipped with it is first recessed
The corresponding arc convex of shape card slot 31, two groups of 13 another side sides of side plate are respectively equipped with fixture block 33,33 side of fixture block be equipped with
Corresponding second concave card slot 34 of the arc convex of fixture block 32,2 bottom surface of frame lid are equipped with bracer 35,35 two sides of bracer and 2 side of frame lid
Spacing between two groups of fixture blocks 32 in face is equal to the sum of side plate 13 and 33 thickness of fixture block.
Fixed block 22 includes horizontal stripe block 41, vertical bar block 42, and horizontal stripe block 41 and 42 vertical welding of vertical bar block, horizontal stripe block 41 are horizontal
It is welded on 12 upper surface of bottom plate, vertical bar block 42 is concordant with 21 medial surface of limited block to be welded on limited block 21, and fixing axle 23 is installed
On vertical bar block 42,41 top of horizontal stripe block is equipped with glass steel frame plate 43.
Mounting hole 61 is equipped on bottom plate 12 between two adjacent groups fixed link 52,12 surface of bottom plate corresponds to the weldering of 61 position of mounting hole
It is connected to installation set 62,62 side ring of installation set has positioning ring 63, and glass steel frame plate 43 is located at 63 top of positioning ring, and installation set 62 is worn
It crosses glass steel frame plate 43 and is connected through a screw thread locking sleeve gasket 64.
Side plate 13 is equipped with venthole 71, and 13 lateral surface of side plate corresponds to 71 position of venthole and is welded with partition 72.
A kind of macromolecule lined steel type trough type bridge frame, working principle:
In use process, frame lid is removed from limited block, turns up two groups of side plates outward, and side plate bottom turns around fixing axle
It is dynamic, when side plate is vertical with bottom plate, frame lid is covered, the fixture block on side plate top is placed between the fixture block and fagging of frame lid end side,
Arc convex on fixture block is placed in the second concave card slot on fixture block, realizes the fixation to side plate.
Embodiment 2
As shown in Figure 1, Figure 2；A kind of macromolecule lined steel type trough type bridge frame, including rack slot 1, and be mounted in rack slot 1
The frame lid 2 of port, rack slot 1 include the side plate 13 of the sizes such as 12, two groups of bottom plate, and 12 two sides upper surface of bottom plate is distinguished along its length
Equipped with limited block 21, it is separately installed with fixed block 22 on the bottom plate 12 on the inside of 21 both ends of limited block, bottom plate 12 ipsilateral two groups solid
Determine that fixing axle 23 is installed between block 22, two groups of 13 end sides of side plate are separately mounted in the fixing axle 23 of 12 two sides of bottom plate, limited block
21 sides are equipped with the first concave card slot 31, and 2 bottom surface both side of frame lid is respectively equipped with fixture block 32,32 medial surface of fixture block be equipped with it is first recessed
The corresponding arc convex of shape card slot 31, two groups of 13 another side sides of side plate are respectively equipped with fixture block 33,33 side of fixture block be equipped with
Corresponding second concave card slot 34 of the arc convex of fixture block 32,2 bottom surface of frame lid are equipped with bracer 35,35 two sides of bracer and 2 side of frame lid
Spacing between two groups of fixture blocks 32 in face is equal to the sum of side plate 13 and 33 thickness of fixture block.
Fixed block 22 includes horizontal stripe block 41, vertical bar block 42, and horizontal stripe block 41 and 42 vertical welding of vertical bar block, horizontal stripe block 41 are horizontal
It is welded on 12 upper surface of bottom plate, vertical bar block 42 is concordant with 21 medial surface of limited block to be welded on limited block 21, and fixing axle 23 is installed
On vertical bar block 42,41 top of horizontal stripe block is equipped with glass steel frame plate 43.
Mounting hole 61 is equipped on bottom plate 12 between two adjacent groups fixed link 52,12 surface of bottom plate corresponds to the weldering of 61 position of mounting hole
It is connected to installation set 62,62 side ring of installation set has positioning ring 63, and glass steel frame plate 43 is located at 63 top of positioning ring, and installation set 62 is worn
It crosses glass steel frame plate 43 and is connected through a screw thread locking sleeve gasket 64.
As shown in Figure 4；Side plate 13 is equipped with venthole 71, and 13 lateral surface of side plate corresponds to 71 position of venthole and is welded with partition
72。
A kind of macromolecule lined steel type trough type bridge frame, working principle:
In use process, frame lid is removed from limited block, turns up two groups of side plates outward, and side plate bottom turns around fixing axle
It is dynamic, when side plate is vertical with bottom plate, frame lid is covered, the fixture block on side plate top is placed between the fixture block and fagging of frame lid end side,
Arc convex on fixture block is placed in the second concave card slot on fixture block, realizes the fixation to side plate.
Referring to figs 1 and 3；Side plate 13 is connected and fixed 23 one end of axis and is equipped with top plate 51, the equidistant hinge in 51 bottom end of top plate
Several fixed links 52 are connected to, between glass steel frame plate 43 and bottom plate 12,52 other end end point of fixed link is set fixed link 52
There is a mounting groove 53, hinged 54 one end of kelly in 53 inside of mounting groove is connected in the middle part of kelly 54 and squeezes spring 55, it is another to squeeze spring 55
One end is connected to inside mounting groove 53, and 43 bottom surface of glass steel frame plate is equipped with locating slot 56 corresponding with kelly 54.
When side plate is propped up, side plate bottom mandril ejects fixed link to bottom plate middle part, and the kelly in fixed link is squeezing bullet
It is fixed on inside the locating slot of glass steel frame plate bottom under spring effect, realizes the fixation to side plate, increase the fixed effect of side plate.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of macromolecule lined steel type trough type bridge frame, including rack slot (1), and it is mounted on the frame lid (2) of rack slot (1) upper port,
It is characterized by: the rack slot (1) includes the side plate (13) of bottom plate (12), the sizes such as two groups, bottom plate (12) the two sides upper end
Face is respectively equipped with limited block (21) along its length, is separately installed on the bottom plate (12) on the inside of limited block (21) both ends solid
Determine block (22), is equipped with fixing axle (23) between two groups of ipsilateral fixed blocks (22) of the bottom plate (12), side plate described in two groups (13)
End side is separately mounted in the fixing axle (23) of bottom plate (12) two sides, and limited block (21) side is equipped with the first concave card slot
(31), frame lid (2) bottom surface both side is respectively equipped with fixture block (32), and fixture block (32) medial surface is equipped with and the first concave card slot
(31) corresponding arc convex, side plate described in two groups (13) another side side are respectively equipped with fixture block (33), the fixture block (33)
Side is equipped with the second concave card slot (34) corresponding with the arc convex of fixture block (32), and frame lid (2) bottom surface is equipped with bracer
(35), the spacing between bracer (35) two sides and two groups of fixture blocks (32) of frame lid (2) side is equal to side plate (13) and fixture block
(33) the sum of thickness.
2. a kind of macromolecule lined steel type trough type bridge frame according to claim 1, it is characterised in that: fixed block (22) packet
Horizontal stripe block (41), vertical bar block (42), the horizontal stripe block (41) and vertical bar block (42) vertical welding are included, the horizontal stripe block (41) is horizontal
It is welded on bottom plate (12) upper surface, the vertical bar block (42) is concordant with limited block (21) medial surface to be welded on limited block (21),
The fixing axle (23) is mounted on vertical bar block (42), and horizontal stripe block (41) top is equipped with glass steel frame plate (43).
3. a kind of macromolecule lined steel type trough type bridge frame according to claim 2, it is characterised in that: side plate (13) connection
Fixing axle (23) one end is equipped with top plate (51), and top plate (51) bottom end is equidistant to be hinged with several fixed links (52), described
Fixed link (52) is located between glass steel frame plate (43) and bottom plate (12), and fixed link (52) other end end point is equipped with installation
Slot (53), internal hinged kelly (54) one end of the mounting groove (53), kelly (54) middle part, which is connected with, squeezes spring (55),
Extruding spring (55) other end is connected to mounting groove (53) inside, and glass steel frame plate (43) bottom surface is equipped with and kelly
(54) corresponding locating slot (56).
4. a kind of macromolecule lined steel type trough type bridge frame according to claim 3, it is characterised in that: phase on the bottom plate (12)
Mounting hole (61) are equipped between adjacent two groups of fixed links (52), bottom plate (12) surface corresponds to mounting hole (61) position and is welded with peace
Encapsulation (62), installation set (62) side ring have positioning ring (63), and the glass steel frame plate (43) is located on positioning ring (63)
Portion, the installation set (62) pass through glass steel frame plate (43) and are connected through a screw thread locking sleeve gasket (64).
5. a kind of macromolecule lined steel type trough type bridge frame according to claim 1, it is characterised in that: set on the side plate (13)
Have venthole (71), side plate (13) lateral surface corresponds to venthole (71) position and is welded with partition (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811115743.8A CN109301773B (en) | 2018-09-25 | 2018-09-25 | Polymer lining steel type groove bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811115743.8A CN109301773B (en) | 2018-09-25 | 2018-09-25 | Polymer lining steel type groove bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109301773A true CN109301773A (en) | 2019-02-01 |
| CN109301773B CN109301773B (en) | 2020-04-21 |
Family
ID=65164172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811115743.8A Active CN109301773B (en) | 2018-09-25 | 2018-09-25 | Polymer lining steel type groove bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109301773B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458196A (en) * | 2021-06-28 | 2021-10-01 | 扬州东仑机械制造有限公司 | Forming die of high-frequency welded pipe |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19651017C1 (en) * | 1996-11-28 | 1998-04-30 | Udo Wirthwein | Cable duct |
| CN2399869Y (en) * | 1999-12-31 | 2000-10-04 | 徐怀书 | Card type anti-corrosion cable bridge |
| CN2485846Y (en) * | 2001-05-22 | 2002-04-10 | 杨清辉 | Foldable heat sink |
| CN204012532U (en) * | 2014-06-06 | 2014-12-10 | 淮南联合大学 | A kind of for connecting the expansion joint between channel-type cable bridge |
| CN207603125U (en) * | 2017-11-30 | 2018-07-10 | 遵义华正电缆桥架有限公司 | A kind of fire-proof cable bridge rack |
| CN108471096A (en) * | 2018-06-13 | 2018-08-31 | 广东电网有限责任公司 | Bridge convenient to install and use |
| CN108565795A (en) * | 2018-04-09 | 2018-09-21 | 江苏华强电力设备有限公司 | A kind of corrosion-resistant channel-type cable bridge |
-
2018
- 2018-09-25 CN CN201811115743.8A patent/CN109301773B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19651017C1 (en) * | 1996-11-28 | 1998-04-30 | Udo Wirthwein | Cable duct |
| CN2399869Y (en) * | 1999-12-31 | 2000-10-04 | 徐怀书 | Card type anti-corrosion cable bridge |
| CN2485846Y (en) * | 2001-05-22 | 2002-04-10 | 杨清辉 | Foldable heat sink |
| CN204012532U (en) * | 2014-06-06 | 2014-12-10 | 淮南联合大学 | A kind of for connecting the expansion joint between channel-type cable bridge |
| CN207603125U (en) * | 2017-11-30 | 2018-07-10 | 遵义华正电缆桥架有限公司 | A kind of fire-proof cable bridge rack |
| CN108565795A (en) * | 2018-04-09 | 2018-09-21 | 江苏华强电力设备有限公司 | A kind of corrosion-resistant channel-type cable bridge |
| CN108471096A (en) * | 2018-06-13 | 2018-08-31 | 广东电网有限责任公司 | Bridge convenient to install and use |
Non-Patent Citations (1)
| Title |
|---|
| 杜毅威: "新型高分子合金电缆桥架工程应用", 《建筑电气》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458196A (en) * | 2021-06-28 | 2021-10-01 | 扬州东仑机械制造有限公司 | Forming die of high-frequency welded pipe |
| CN113458196B (en) * | 2021-06-28 | 2023-10-27 | 扬州东仑机械制造有限公司 | Forming die of high-frequency welded pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109301773B (en) | 2020-04-21 |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200306 Address after: 239300 Anhui city of Chuzhou Province, Tianchang Road Economic Development Zone No. 888 Applicant after: ANHUI TIANCAI CABLE GROUP Co.,Ltd. Address before: 239300 Anhui city of Chuzhou Province, Tianchang Road Economic Development Zone No. 888 Applicant before: ANHUI KUNHE ELECTRICAL Co.,Ltd. |
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Application publication date: 20190201 Assignee: Anhui Huashen Aluminum Industry Co.,Ltd. Assignor: ANHUI TIANCAI CABLE GROUP Co.,Ltd. Contract record no.: X2024980005925 Denomination of invention: A polymer lined steel groove type cable tray Granted publication date: 20200421 License type: Common License Record date: 20240522 |