CN112895983A - Crossing support installation device for railway overhead line system under road and use method thereof - Google Patents
Crossing support installation device for railway overhead line system under road and use method thereof Download PDFInfo
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- CN112895983A CN112895983A CN202110198370.0A CN202110198370A CN112895983A CN 112895983 A CN112895983 A CN 112895983A CN 202110198370 A CN202110198370 A CN 202110198370A CN 112895983 A CN112895983 A CN 112895983A
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- supporting
- plate
- wire
- groove
- crossing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
- B60M1/20—Arrangements for supporting or suspending trolley wires, e.g. from buildings
Abstract
The invention discloses a crossing supporting and mounting device for a railway overhead line system under a road, which comprises a supporting mechanism and a mounting mechanism, wherein the supporting mechanism comprises a supporting seat and a supporting frame, the supporting seat is connected with the supporting frame, a longitudinal rod is mounted on the supporting frame, the longitudinal rod is connected with a transverse rod, the supporting seat is mounted on two sides of the supporting frame, the lower end of the supporting frame is provided with an overhead line device for the overhead line system, the overhead line device for the overhead line system comprises an overhead line groove, the overhead line groove is connected with a groove plate on the supporting frame, the mounting mechanism comprises a mounting frame, the lower end of the mounting frame is provided with a mounting roller, the upper end of the mounting frame is provided with a mounting frame plate, the mounting frame plate is provided with a fixing device, the device can ensure the rapid and smooth mounting of the overhead line system, simultaneously ensure, the rapid and safe road passing and the rapid propulsion of the line are ensured.
Description
Technical Field
The invention relates to the technical field of railway contact networks, in particular to a crossing support mounting device for a railway contact network under a road and a using method thereof.
Background
The construction and the maintenance of the contact net under the bridge have certain technical difficulty in the implementation and the maintenance process of the existing railway contact net, the construction space under the bridge is limited, the erection of the contact net is not facilitated, the construction progress is slow, or the operation that the contact net is not facilitated to the operation vehicle is replaced in the maintenance process, construction safety problems exist for constructors, the maintenance and the construction are ensured to be rapidly completed, a special device for the contact net under the bridge is designed, the occurrence of the technical problems and the safety problems is avoided, the construction is ensured to be rapidly and safely, and the smooth propulsion of the contact net is facilitated.
Disclosure of Invention
The invention aims to provide a crossing support mounting device for a railway overhead line system under a road and a using method thereof, which are used for solving the problems in the background technology, can ensure the quick and smooth mounting of the overhead line system through the implementation of the device, simultaneously ensure the mounting of constructors, and can ensure the quick and safe passing of the overhead line system through the fixed lead of the overhead line system in advance during the construction process, thereby ensuring the quick propulsion of the line.
In order to achieve the purpose, the invention provides the following technical scheme: a crossing supporting and mounting device for a railway overhead line system under a road comprises a supporting mechanism and a mounting mechanism, wherein the supporting mechanism comprises a supporting seat and a supporting frame, the supporting seat is connected with the supporting frame, the supporting seat comprises an upper supporting plate and a lower supporting plate, the upper supporting plate is connected with the lower supporting plate through a vertical plate, a longitudinal rod is mounted on the supporting frame, the longitudinal rod is connected with a transverse rod, the supporting seat is mounted on two sides of the supporting frame, the mounting mechanism comprises a mounting frame, mounting rollers are arranged at the lower end of the mounting frame, a mounting frame plate is arranged at the upper end of the mounting frame, a line crossing device is arranged on the mounting frame plate, the line crossing device of the overhead line system comprises a line crossing groove, and the line crossing groove; the support frame can be fixed on the bridge in advance through the mounting mechanism and the supporting mechanism, the support frame is fixed above the bridge through the longitudinal rod and the transverse rod, the support frame is fixed on two sides of the bridge through the supporting seat, the supporting mechanism is fixed, the contact net wires are fixed in advance in the movement process of the contact net wires, the smooth downward passing of the contact net wires is guaranteed, the safety of constructors is guaranteed, the downward passing time of the bridge is also saved, and the support frame can pass through the mounting rollers quickly.
Preferably, the support upper plate is connected to the vertical plate in a sliding manner, a fastening device is mounted on the support upper plate and comprises a fastening bolt, the fastening bolt is mounted on a bolt hole in the support upper plate, a flat plate is arranged at the lower end of the fastening bolt, and a rotating handle is arranged at the upper end of the bolt; when the supporting mechanism is installed, the supporting seat is fixed on two sides of the bridge through the fastening device on the supporting upper plate, the supporting seat is fixed, in the fixing process, the supporting mechanism is prevented from loosening and causing danger through the clamping operation of the fastening bolt on the supporting upper plate, meanwhile, the two sides of the bridge are stabilized through the longitudinal rods and the transverse rods, and the balance and the stability of the supporting mechanism on the two sides of the bridge are guaranteed.
Preferably, the lower end of the support frame is provided with a line arranging device, the line arranging device comprises a line arranging groove, a left groove plate and a right groove plate, a line arranging groove is formed between the left groove plate and the right groove plate, the right groove plate is connected with a rotating shaft on a transverse plate, the left groove plate is fixedly connected with the transverse plate, the left groove plate is fixedly connected to one side of a guide wheel, and the other side of the guide wheel is movably inserted into the right groove plate; the device can be in the same direction as the line through following the wire casing in order to guarantee that the contact net twine can get into smoothly in the same direction as the wire casing, and right frid can reciprocate through the pivot, guarantees to get into in the same direction as the wire casing back guide wheel other end axle and can peg graft in right frid at the contact net twine, guarantees to lock the contact net twine into in the same direction as the wire casing, makes the contact net twine follow the line through the guide wheel.
Preferably, the wire spanning groove is connected with the mounting frame plate, a wire bouncing plate is arranged in the wire spanning groove, one end of the wire bouncing plate is movably mounted on the inner wall of the wire spanning groove, a spring is arranged in the middle of the inner wall of the wire spanning groove, and the other end of the spring is fixedly connected to the wire bouncing plate; the line crossing groove mainly supports the contact network cable through the line snapping plate, the line snapping plate can guarantee the buffering and the upper and lower displacement allowance of the contact network cable, and the smooth line crossing groove of the contact network cable is guaranteed.
Preferably, the wire stroking tube is arranged on the wire ejecting plate and fixed on the wire ejecting plate, a filling block is arranged in the wire stroking tube, and the filling block is stacked upwards in an inclined angle; the wire smoothing pipe is arranged for ensuring that the contact net wire moves along a straight line and is arranged on the wire ejecting plate, so that the contact net wire can not swing left and right, the contact net wire can enter the wire smoothing groove at one time, and the speed of supporting and installing is improved.
Preferably, the wire smoothing pipe is an open arc-shaped pipe, and the cross section of the wire smoothing pipe is bent in an inverted omega shape; the wire smoothing pipe is inverted omega-shaped, so that smooth leading-out of the contact wire can be guaranteed when the wire smoothing pipe is in contact with the wire smoothing groove, the contact wire enters the wire smoothing groove, meanwhile, the right groove plate is directly pushed down when the wire smoothing pipe touches the wire smoothing groove and is smoothly clamped on the shaft at the other end of the guide wheel, and the contact wire is guaranteed not to leak.
Preferably, the use method of the crossing railway contact net crossing support mounting device under the road comprises the following steps:
s1: the supporting seat is fixed on a road bridge through the supporting seat and the supporting frame of the supporting mechanism, the supporting seat is installed on two sides of the bridge, the supporting upper plate and the supporting lower plate on the supporting seat are clamped on the edges of two sides of the bridge, the supporting seat is fixed on the bridge edge through the fastening device on the supporting upper plate, the supporting seat is adapted to the thicknesses of different bridges through the movement of the supporting upper plate, the fixing of the supporting mechanism is completed through the transverse rod and the longitudinal rod on the supporting frame under the supporting seat, and then the following is performed through the following device below;
s2: the installation mechanism is arranged on a track and moves through a roller, a contact network wire is pulled through a contact network wire spanning device on the installation frame in the moving process, the contact network wire is pushed through a wire spanning groove in the pulling process, the wire can smoothly pass through a lower channel in the pushing process, a wire smoothing pipe in the wire spanning groove is touched with a right groove plate of the wire spanning device in the moving process, the right groove plate is in an open state, the contact network wire is pulled into the wire spanning groove through collision, meanwhile, the other end shaft of a guide wheel on the left groove plate is inserted into the right groove plate to be blocked, the contact network wire continuously moves forwards through rotation of the guide wheel, the installation mechanism continuously moves forwards, the contact network wire is completely led into the support mechanism and continuously moves forwards, and the road downward penetrating support installation operation is completed.
Compared with the prior art, the invention has the beneficial effects that:
1. the support frame can be fixed on the bridge in advance through the mounting mechanism and the supporting mechanism, the support frame is fixed above the bridge through the longitudinal rod and the transverse rod, the support frame is fixed on two sides of the bridge through the supporting seat, the supporting mechanism is fixed, the contact net wires are fixed in advance in the movement process of the contact net wires, the smooth downward passing of the contact net wires is guaranteed, the safety of constructors is guaranteed, the downward passing time of the bridge is also saved, and the support frame can pass through the mounting rollers quickly.
2. When the supporting mechanism is installed, the supporting seat is fixed on two sides of the bridge through the fastening device on the supporting upper plate, the supporting seat is fixed, in the fixing process, the supporting mechanism is prevented from loosening and causing danger through the clamping operation of the fastening bolt on the supporting upper plate, meanwhile, the two sides of the bridge are stabilized through the longitudinal rods and the transverse rods, and the balance and the stability of the supporting mechanism on the two sides of the bridge are guaranteed.
3. The wire smoothing pipe is arranged for ensuring that the contact net wire moves along a straight line and is arranged on the wire ejecting plate, so that the contact net wire can not swing left and right, the contact net wire can enter the wire smoothing groove at one time, and the speed of supporting and installing is improved.
4. The wire smoothing pipe is inverted omega-shaped, so that smooth leading-out of the contact wire can be guaranteed when the wire smoothing pipe is in contact with the wire smoothing groove, the contact wire enters the wire smoothing groove, meanwhile, the right groove plate is directly pushed down when the wire smoothing pipe touches the wire smoothing groove and is smoothly clamped on the shaft at the other end of the guide wheel, and the contact wire is guaranteed not to leak.
Drawings
Fig. 1 is a schematic view of the overall structure of the railway catenary crossing support mounting device.
Fig. 2 is a schematic structural view of a supporting mechanism of the overhead line system crossing supporting and mounting device.
FIG. 3 is a schematic diagram of a cross-slot structure according to the present invention.
FIG. 4 is a schematic view of a fairing device of the present invention.
Reference numerals: 1. the supporting mechanism comprises a supporting mechanism body, 2, an installing mechanism, 3, a supporting seat, 4, a supporting frame, 5, an upper supporting plate, 6, a lower supporting plate, 7, a vertical plate, 8, a longitudinal rod, 9, a transverse rod, 10, an installing frame, 11, a roller, 12, a frame plate, 13, a contact network wire spanning device, 14, a wire spanning groove, 15, a wire arranging device, 16, a fastening device, 17, a fastening bolt, 18, a flat plate, 19, a rotating handle, 20, a wire arranging groove, 21, a left groove plate, 22, a right groove plate, 23, a transverse plate, 24, a guide wheel, 25, a wire springing plate, 26, a spring, 27, a wire smoothing pipe, 28 and a filling block.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Example 1
A crossing supporting and mounting device for a railway contact net under a road comprises a supporting mechanism 1 and a mounting mechanism 2, the supporting mechanism 1 comprises a supporting seat 3 and a supporting frame 4, the supporting seat 3 is connected with the supporting frame 4, the supporting seat 3 comprises an upper supporting plate 5 and a lower supporting plate 6, the upper supporting plate 5 is connected with the lower supporting plate 6 through a vertical plate 7, a longitudinal rod 8 is arranged on the supporting frame 4, the longitudinal rod 8 is connected with a transverse rod 9, the supporting seats 3 are arranged on two sides of the supporting frame 4, the mounting mechanism 2 comprises a mounting rack 10, a mounting roller 11 is arranged at the lower end of the mounting rack 10, the upper end of the mounting rack 10 is provided with a mounting rack plate 12, the mounting rack plate 12 is provided with a contact net overline device 13, the overhead line device 13 of the overhead line system comprises an overhead line slot 14, and the overhead line slot 14 is connected with an overhead line device 15 on the support frame 4; the support frame can be fixed on the bridge in advance through the mounting mechanism 2 and the supporting mechanism 1, the support frame is fixed above the bridge through the longitudinal rod 8 and the transverse rod 9, the support frame is fixed on two sides of the bridge through the supporting seat 3, the supporting mechanism 1 is fixed, and the contact net lines are fixed in advance in the movement of the contact net lines, so that the smooth downward passing of the contact net lines is guaranteed, the safety of constructors is guaranteed, the downward passing time of the bridge is also saved, and the support frame can pass through the mounting rollers quickly.
The supporting upper plate 5 is connected to the vertical plate 7 in a sliding mode, a fastening device 16 is installed on the supporting upper plate 5, the fastening device 16 comprises a fastening bolt 17, the fastening bolt 17 is installed on a bolt hole in the supporting upper plate 5, a flat plate 18 is arranged at the lower end of the fastening bolt 17, and a rotating handle 19 is arranged at the upper end of the fastening bolt 17; when installing supporting mechanism 1, on being fixed in the both sides of bridge with supporting seat 3 through the fastener 16 that supports on the upper plate 5, accomplish the fixed of supporting seat 3, at fixed in-process, carry out the clamping operation through the fastening bolt 17 that supports on the upper plate 5 and prevent that supporting mechanism 1 from lax and causing the danger, carry out the firm of bridge both sides through longitudinal rod 8 and transverse rod 9 simultaneously, guarantee supporting mechanism 1 in the balance and the stability of bridge both sides.
The lower end of the support frame 4 is provided with a fairing device 15, the fairing device 15 comprises a fairing groove 20, a left groove plate 21 and a right groove plate 22, the fairing groove 20 is arranged between the left groove plate 21 and the right groove plate 22, the right groove plate 22 is connected with a rotating shaft on a transverse plate 23, the left groove plate 21 is fixedly connected with the transverse plate 23, the left groove plate 21 is fixedly connected to one side of a guide wheel 24, and the other side of the guide wheel 24 is movably inserted on the right groove plate 22; the device 15 of following the same direction as the line can be through following the line groove 20, in order to guarantee that the contact net twine can get into smoothly in the same direction as the line groove 20, right frid 22 can reciprocate through the pivot, guarantees to get into in the same direction as the line groove 20 back guide wheel 24 other end axle can peg graft in right frid 22 at the contact net twine, guarantees to lock the contact net twine into in the same direction as line groove 20, makes the contact net twine follow the same direction as the line through guide wheel 24.
The wire spanning groove 14 is connected with the mounting frame plate 12, a wire ejecting plate 25 is arranged in the wire spanning groove 14, one end of the wire ejecting plate 25 is movably mounted on the inner wall of the wire spanning groove 14, a spring 26 is arranged in the middle of the inner wall of the wire spanning groove 14, and the other end of the spring 26 is fixedly connected to the wire ejecting plate; the wire crossing groove 14 mainly supports the contact network wire through the elastic wire 25 plate, and the elastic wire 25 plate can ensure the buffering and the up-down displacement allowance of the contact network wire and ensure the smooth operation of the contact network wire in the wire arranging groove 20.
The wire straightening pipe 27 is arranged on the wire ejecting plate 25, the wire straightening pipe 27 is fixed on the wire ejecting plate 25, a filling block 28 is arranged in the wire straightening pipe 27, the filling block 28 extends along one side of the wire straightening pipe 27, and the filling block 28 is stacked upwards in an inclined angle; the wire smoothing pipe 27 is arranged for ensuring that the contact net wire moves linearly, the wire smoothing pipe 27 is arranged on the wire ejecting plate 25, the contact net wire can be ensured not to swing left and right, the contact net wire can enter the wire arranging groove 20 at one time, and the speed of supporting and installing is improved.
The wire smoothing pipe 27 is an open arc pipe, and the cross section of the wire smoothing pipe 27 is bent in an inverted omega shape; the wire smoothing pipe 27 is inverted omega-shaped, so that smooth leading-out of the contact wires can be ensured when the wire smoothing pipe 27 is in contact with the wire smoothing groove 20 and enters the wire smoothing groove 20, and meanwhile, when the wire smoothing pipe 27 touches the wire smoothing groove, the right groove plate 22 is directly pushed down and smoothly clamped on the shaft at the other end of the guide wheel 24, so that the contact wires cannot leak out.
A use method of a crossing railway contact net crossing supporting and mounting device under a road comprises the following steps:
s1: the supporting seat 3 and the supporting frame 4 of the supporting mechanism 1 are fixed on a road bridge, the supporting seat 3 is arranged on two sides of the bridge, the supporting upper plate 5 and the supporting lower plate 6 on the supporting seat 3 are clamped on two side edges of the bridge, the supporting seat 3 is fixed on the bridge edge through the fastening device 16 on the supporting upper plate 5, the supporting seat is adapted to the thicknesses of different bridges through the movement of the supporting upper plate 5, the supporting mechanism 1 is fixed through the transverse rod 9 and the longitudinal rod 8 on the supporting frame 4 under the supporting seat 3, and the lower line-following device 15 is used for line-following;
s2: the installation mechanism 2 is arranged on a track and moves through a roller 11, a contact net wire is pulled through a contact net wire spanning device 13 on the installation frame 10 in the moving process, the contact net wire is pushed through a wire spanning groove 14 in the pulling process, in order to ensure that the contact net wire can be processed through a lower channel in the pushing process, a wire smoothing pipe 27 on a wire ejecting plate 25 in the wire spanning groove 14 is touched with a right groove plate 22 of a wire smoothing device 15 in the moving process, the right groove plate 22 is in an open state, the contact net wire is pulled into the wire spanning groove 14 through collision, meanwhile, the other end shaft of a guide wheel 24 on a left groove plate 21 is inserted into the right groove plate 22 for blocking, the contact net wire continuously moves forwards through rotation of the guide wheel 24, the contact net wire is continuously moved forwards through the installation mechanism 2, the contact net wire is completely led into the support mechanism 1, the movement is continuously carried out, and the road underpass support installation operation is.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions are considered to be within the protective scope of the present invention.
Claims (7)
1. The utility model provides a railway contact net spanes and supports installation device under road, includes supporting mechanism and installation mechanism, its characterized in that, supporting mechanism includes supporting seat and support frame, the supporting seat with the support frame is connected, the supporting seat is including supporting the upper plate and supporting the hypoplastron, support the upper plate with support and connect through the riser between the hypoplastron, install the longitudinal rod on the support frame, the longitudinal rod is connected with the transverse bar, the supporting seat install in the support frame both sides, installation mechanism includes the mounting bracket, the mounting bracket lower extreme is provided with the installation gyro wheel, the mounting bracket upper end is provided with the mounting bracket plate, be provided with contact net overline device on the mounting bracket plate, contact net overline device is including the overline groove, the overline groove with it connects to follow the line device.
2. The device for supporting and installing the crossing of the railway contact net under the road according to claim 1, wherein the supporting upper plate is slidably connected to the vertical plate, the supporting upper plate is provided with a fastening device, the fastening device comprises a fastening bolt, the fastening bolt is installed on a bolt hole in the supporting upper plate, a flat plate is arranged at the lower end of the fastening bolt, and a rotating handle is arranged at the upper end of the fastening bolt.
3. The device for supporting and installing the crossing of the railway contact net under the road according to claim 1, wherein a line arranging device is installed at the lower end of the supporting frame and comprises a line arranging groove, a left groove plate and a right groove plate, the line arranging groove is formed between the left groove plate and the right groove plate, the right groove plate is connected with a rotating shaft on a transverse plate, the left groove plate is fixedly connected with the transverse plate, the left groove plate is fixedly connected to one side of the guide wheel, and the other side of the guide wheel is movably inserted into the right groove plate.
4. The device for supporting and installing the crossing of the railway contact network under the road according to claim 1, wherein the crossing slot is connected with the installation frame plate, a line snapping plate is arranged in the crossing slot, one end of the line snapping plate is movably arranged on the inner wall of the crossing slot, a spring is arranged in the middle of the inner wall of the crossing slot, and the other end of the spring is fixedly connected with the line snapping plate.
5. The device for supporting and installing the crossing of the railway contact network under the road according to claim 4 is characterized in that a wire smoothing pipe is arranged on the wire springing plate and fixed on the wire springing plate, and filling blocks are arranged in the wire smoothing pipe and are stacked upwards at an inclined angle.
6. The cross-over supporting and installing device for the railway crossing contact system under the road according to claim 5, wherein the wire smoothing pipe is an open arc pipe, and the cross section of the wire smoothing pipe is bent in an inverted omega shape.
7. The use method of the crossing supporting and mounting device for the under-road crossing railway overhead line system is characterized in that the crossing supporting and mounting device for the under-road crossing railway overhead line system is the crossing supporting and mounting device for the overhead line system of any one of claims 1 to 6, and comprises the following steps:
s1: the supporting seat is fixed on a road bridge through the supporting seat and the supporting frame of the supporting mechanism, the supporting seat is installed on two sides of the bridge, the supporting upper plate and the supporting lower plate on the supporting seat are clamped on the edges of two sides of the bridge, the supporting seat is fixed on the bridge edge through the fastening device on the supporting upper plate, the supporting seat is adapted to the thicknesses of different bridges through the movement of the supporting upper plate, the fixing of the supporting mechanism is completed through the transverse rod and the longitudinal rod on the supporting frame under the supporting seat, and then the following is performed through the following device below;
s2: the installation mechanism is arranged on a track and moves through a roller, a contact network wire is pulled through a contact network wire spanning device on the installation frame in the moving process, the contact network wire is pushed through a wire spanning groove in the pulling process, the wire can smoothly pass through a lower channel in the pushing process, a wire smoothing pipe in the wire spanning groove is touched with a right groove plate of the wire spanning device in the moving process, the right groove plate is in an open state, the contact network wire is pulled into the wire spanning groove through collision, meanwhile, the other end shaft of a guide wheel on the left groove plate is inserted into the right groove plate to be blocked, the contact network wire continuously moves forwards through rotation of the guide wheel, the installation mechanism continuously moves forwards, the contact network wire is completely led into the support mechanism and continuously moves forwards, and the road downward penetrating support installation operation is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110198370.0A CN112895983B (en) | 2021-02-22 | 2021-02-22 | Crossing support installation device for railway overhead line system under road and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110198370.0A CN112895983B (en) | 2021-02-22 | 2021-02-22 | Crossing support installation device for railway overhead line system under road and use method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112895983A true CN112895983A (en) | 2021-06-04 |
| CN112895983B CN112895983B (en) | 2022-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110198370.0A Active CN112895983B (en) | 2021-02-22 | 2021-02-22 | Crossing support installation device for railway overhead line system under road and use method thereof |
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| Country | Link |
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| CN (1) | CN112895983B (en) |
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| CN111907377A (en) * | 2020-08-10 | 2020-11-10 | 国网四川省电力公司宜宾供电公司 | Contact net mount cable overspeed device tensioner and control alarm system thereof |
| CN111934240A (en) * | 2020-07-03 | 2020-11-13 | 国网山东省电力公司济南供电公司 | Cable auxiliary laying equipment in cable trench |
| CN212195164U (en) * | 2020-03-18 | 2020-12-22 | 济南轨道交通集团建设投资有限公司 | Stride shield and construct section of jurisdiction department contact net suspension davit installing support and subway tunnel |
| CN212485980U (en) * | 2020-07-10 | 2021-02-05 | 中冶天工集团有限公司 | Bridge cable laying device |
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2021
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| WO1995021389A1 (en) * | 1994-02-03 | 1995-08-10 | Suparules Limited | Measuring apparatus |
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| CN212485980U (en) * | 2020-07-10 | 2021-02-05 | 中冶天工集团有限公司 | Bridge cable laying device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112895983B (en) | 2022-12-16 |
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