CN110668326A - Cable lifting device and processing method - Google Patents
Cable lifting device and processing method Download PDFInfo
- Publication number
- CN110668326A CN110668326A CN201911015023.9A CN201911015023A CN110668326A CN 110668326 A CN110668326 A CN 110668326A CN 201911015023 A CN201911015023 A CN 201911015023A CN 110668326 A CN110668326 A CN 110668326A
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- cable
- power element
- lifting
- lifting device
- guide rail
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- 238000003672 processing method Methods 0.000 title abstract description 6
- 238000013519 translation Methods 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000009430 construction management Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
- B66C23/38—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with separate prime movers for crane and vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/06—Endless track vehicles with tracks without ground wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
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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
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
-
- 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
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/08—Installations of electric cables or lines in or on the ground or water in tunnels
Abstract
The invention relates to a cable lifting device and a processing method, which are used for placing a cable on a bracket, wherein the cable lifting device comprises a moving mechanism, a supporting mechanism and a positioning mechanism; the moving mechanism comprises a base and a moving part connected with the base; the supporting mechanism comprises a supporting frame connected with the base and a guide rail connected with the supporting frame; the positioning mechanism comprises a slide block connected with the guide rail, a translation power element connected with the slide block, a lifting power element connected with the slide block and a fixing piece connected with the lifting power element; the translation power element is used for driving the sliding block to be arranged on the guide rail in a sliding manner; the lifting power element is used for controlling the fixing piece to lift; the fixing piece is used for connecting the cable. The cable lifting device can lift the cable to different heights by moving and positioning the moving part, fixing the cable by the fixing part, adjusting the height of the fixing part by the lifting power element and adjusting the horizontal position of the fixing part by the sliding block. The cable lifting device is simple in structure, labor-saving, efficient, safe and reliable.
Description
Technical Field
The invention relates to the technical field of cable laying equipment, in particular to a cable lifting device and a processing method.
Background
When laying heavy type cables of high pressure such as 110kV, 220kV, 500kV in the tunnel, construction worker need promote the cable to the height of 1m ~ 2.5m, under construction condition and technical condition in the past, mainly adopt the mode of manpower promotion to the promotion of heavy type cable of high pressure, be equipped with two at least workers at every section distance along the cable promptly, arrange along the cable so and adopt people to lift the mode of shouldering and promote the cable to predetermined support layer, need to set up the scaffold of certain height at every section distance to higher-level cable, there are several shortcomings in this kind of mode:
firstly, the construction cost is high: the high-voltage cables laid in the common tunnel are long in length, large in section and heavy in unit length, and a large amount of labor is required by adopting a pure manpower lifting mode. For example, when a high-voltage heavy cable with the voltage class of 220kV, the conductor section of 1200mm2 and the length of 600 m is laid, the cable is lifted section by 40m, two lifting cables are arranged at intervals of 5m, at least 16 persons are needed for lifting the cable, and 121 scaffolds are needed to be built for the whole section of cable when the cable is required to be lifted to a higher-level bracket.
Secondly, the working efficiency is low: as mentioned above, a scaffold is required to be built every 5m, two workers are required to be built, the two workers transmit cables from low to high, each worker needs to bear a load of about 150kG, the maximum cable is lifted by 2m, 16 workers need to repeatedly bear the load for 15 times to lift the whole cable, the requirement on the physical quality of construction workers is high, and laying of the one-time cable (3 cables) needs to take a working day at least, and is time-consuming and labor-consuming.
Thirdly, the safety coefficient is low: when a manual lifting mode is adopted, heavy cables need to be manually lifted, and potential safety hazards in the construction process are high.
Fourthly, poor synchronism: because many people are needed to cooperate and carry simultaneously, the field needs commanders to continuously carry out field progress control, construction management is inconvenient, and the process is synchronous and is difficult to control.
Disclosure of Invention
In view of the above, it is desirable to provide a cable lifting device and a processing method thereof, which are safe, reliable and convenient to operate.
A cable lifting device is used for placing a cable on a bracket and comprises a moving mechanism, a supporting mechanism and a positioning mechanism; the moving mechanism comprises a base and a moving part connected with the base; the supporting mechanism comprises a supporting frame connected with the base and a guide rail connected with the supporting frame; the positioning mechanism comprises a sliding block connected with the guide rail, a translation power element connected with the sliding block, a lifting power element connected with the sliding block and a fixing piece connected with the lifting power element; the translation power element is used for driving the sliding block to be arranged on the guide rail in a sliding manner; the lifting power element is used for controlling the fixing piece to lift; the fixing piece is used for connecting a cable.
The cable lifting device provided by the invention can lift the cable to different heights by moving and positioning the moving part, fixing the cable by the fixing part, adjusting the height of the fixing part by the lifting power element and adjusting the horizontal position of the fixing part by the sliding block. The cable lifting device is simple in structure, labor-saving, efficient, safe and reliable.
In one embodiment, the positioning mechanism further comprises a pulley connected to the slider; the translation power element is used for driving the pulley to be arranged on the guide rail in a sliding mode.
In one embodiment, the pulley is in meshing engagement with the translational motive member.
In one embodiment, the support mechanism further comprises a mount; the mounting seat is detachably connected to one end, far away from the base, of the supporting frame; the guide rail is pivoted to the mounting seat.
In one embodiment, the support mechanism further comprises a leveling power element; the leveling power element is used for leveling the guide rail; one end of the leveling power element is pivoted with the mounting seat, and the other end of the leveling power element is pivoted with one end of the guide rail.
In one embodiment, the device further comprises a control mechanism; the control mechanism is in signal connection with the moving mechanism and the positioning mechanism; the control mechanism is used for controlling the operation of the moving mechanism and the positioning mechanism.
In one embodiment, the control mechanism comprises a movement control switch, a translation control switch and a lifting control switch; the movement control switch is used for controlling the operation of the moving part; the translation control switch is used for controlling the operation of the translation power element; the lifting control switch is used for controlling the operation of the lifting power element.
In one embodiment, the system further comprises an online synchronization mechanism; and the online synchronization mechanism is in signal connection with the positioning mechanism.
In one embodiment, the moving mechanism further comprises a first supporting leg, a second supporting leg and a third supporting leg which are connected with the base; the first supporting leg, the second supporting leg and the third supporting leg are used for fixing the base.
A processing method of a cable lifting device is based on the cable lifting device and comprises the following steps:
positioning: arranging the cable lifting devices at intervals along the cable;
feeding: after the cable lifting device is in place, fastening the cables by the fixing pieces;
moving: after the cable is fastened, after each lifting power element drives the fixing element to ascend to a preset height, the translation power element translates the fixing element to a preset position;
material stripping: and after the fixing piece is moved in place, the fixing piece is loosened, so that the cable is placed on the bracket.
Drawings
Fig. 1 is a schematic perspective view of a cable lifting device according to an embodiment of the present invention;
fig. 2 is an enlarged view of a portion of a circle a of the cable hoist shown in fig. 1;
fig. 3 is a diagram of an example of the cable lifting device shown in fig. 1.
Reference is made to the accompanying drawings in which:
a cable lifting device 100;
the device comprises a moving mechanism 10, a base 11, a moving member 12, a first supporting leg 13, a second supporting leg 14, a third supporting leg 15, a supporting mechanism 20, a supporting frame 21, a guide rail 22, a mounting seat 23, a leveling power element 24, a positioning mechanism 30, a sliding block 31, a translation power element 32, a lifting power element 33, a fixing element 34 and a pulley 35.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the following description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1 to 3, a cable lifting device 100 according to an embodiment of the present invention is used for placing a cable on a support, and the cable lifting device 100 includes a moving mechanism 10, a supporting mechanism 20, and a positioning mechanism 30; the cable lifting device 100 of the present invention moves and positions the cable by the moving mechanism 10, fixes the cable by the positioning mechanism 30 and adjusts the height of the cable, and adjusts the horizontal position of the cable by the supporting mechanism 20, thereby lifting the cable to different heights.
As shown in fig. 1, in the present embodiment, the moving mechanism 10 includes a base 11 and a moving member 12 connected to the base 11; optionally, the mobile element 12 has a locking function, preventing the stability from being affected when the cable is lifted; the number of the moving parts 12 is two, and the two moving parts 12 are respectively connected to two sides of the base 11; further, the moving member 12 is a crawler belt so as to move smoothly. In order to ensure the stability of the base 11, the moving mechanism 10 further comprises a first supporting leg 13, a second supporting leg 14 and a third supporting leg 15 which are connected with the base 11; the first support leg 13, the second support leg 14, and the third support leg 15 are used to fix the base 11. Optionally, the first support leg 13, the second support leg 14 and the third support leg 15 are all extended and retracted by hydraulic pressure. Further, the first supporting leg 13 and the second supporting leg 14 are arranged at two adjacent sides of the base 11; the third supporting legs 15 and the second supporting legs 14 are arranged on the same side of the base 11. When the cable lifting device 100 is used, when the moving part 12 moves to a preset place, the first supporting leg 13, the second supporting leg 14 and the third supporting leg 15 are extended and opened, and the stability of the base 11 in the cable lifting process is guaranteed.
In one embodiment, the supporting mechanism 20 includes a supporting frame 21 connected to the base 11 and a guiding rail 22 connected to the supporting frame 21; alternatively, the guide rail 22 is horizontally disposed; the guide rails 22 are i-section steel to ensure rigidity. The support mechanism 20 further comprises a mounting seat 23; the mounting seat 23 is detachably connected to one end of the support frame 21 away from the base 11 so as to facilitate replacement and maintenance; the guide rail 22 is pivoted to the mounting base 23 for adjusting the level. The support mechanism 20 further includes a leveling power element 24; the leveling power element 24 is used for leveling the guide rail 22 to ensure that the guide rail 22 is horizontally arranged; one end of the leveling power element 24 is pivoted to the mounting base 23, and the other end is pivoted to one end of the guide rail 22. Alternatively, the leveling power element 24 is a cylinder.
Referring to fig. 2, the positioning mechanism 30 includes a sliding block 31 connected to the guide rail 22, a translational power element 32 connected to the sliding block 31, a lifting power element 33 connected to the sliding block 31, and a fixing element 34 connected to the lifting power element 33; the translation power element 32 is used for driving the sliding block 31 to be arranged on the guide rail 22 in a sliding manner; the lifting power element 33 is used for controlling the fixing piece 34 to lift; the fixing member 34 is used for connecting a cable. Alternatively, the lifting power element 33 is an electric hoist; the fixing member 34 is a hook. The positioning mechanism 30 further comprises a pulley 35 connected with the slider 31; the translational power element 32 is used for driving the pulley 35 to be arranged on the guide rail 22 in a sliding way. Optionally, pulley 35 is in meshing engagement with translational power member 32. In use, the leveling power member 24 levels the guide rail 22 so that the pulley 35 slides; after the fixing member 34 fastens the cable, the lifting power member 33 lifts the fixing member 34 to a predetermined height, and the translation power member 32 drives the slider 31 to move horizontally, thereby moving the cable to a predetermined position.
For automated operation, the cable lifting device 100 further comprises a control mechanism (not shown); the control mechanism is in signal connection with the moving mechanism 10 and the positioning mechanism 30; the control mechanism is used for controlling the operation of the moving mechanism 10 and the positioning mechanism 30. Optionally, the control mechanism comprises a movement control switch, a translation control switch and a lifting control switch; the movement control switch is used for controlling the operation of the moving part 12; the translation control switch is used for controlling the operation of the translation power element 32; the lifting control switch is used for controlling the operation of the lifting power element 33. The control mechanism also comprises an emergency brake switch, and the emergency brake switch is used for emergently stopping operation when the emergency brake switch is abnormal, so that the safety is ensured. Further, the control mechanism is also used for controlling the operation of the first support leg 13, the second support leg 14, the third support leg 15, and the leveling power member 24. To achieve on-line synchronization, the cable lifting device 100 further includes an on-line synchronization mechanism (not shown); the on-line synchronization mechanism is in signal communication with the positioning mechanism 30 of each cable lifting device 100 such that the plurality of cable lifting devices 100 effect synchronized lifting and translation of the fixture 34 to move the cable to the predetermined position. Meanwhile, the online synchronization mechanism also comprises an emergency braking function; when the abnormity is found, the operation is stopped emergently to ensure the safety.
As shown in fig. 3, when in use, the cable is pulled into the tunnel, moved to a designated position on the ground, and then cable lifting devices 100 are provided at regular intervals along the cable as required. Then, fastening cables by the fixing pieces 34, and leveling the fixing pieces 34 to be at the same horizontal line; controlling each fixing member 34 to synchronously ascend to a preset height by using an online synchronous mechanism, and then controlling each fixing member 34 to horizontally move to a preset position; finally, the cable is placed on the bracket by releasing the fixing member 34, and the movement of the cable is completed. Only 1 person is needed for each cable lifting device 100, so that the number of constructors is greatly reduced, and the construction cost is reduced.
The cable lifting device 100 of the present invention can lift the cable to different heights by moving and positioning the moving member 12, fixing the cable by the fixing member 34, adjusting the height of the fixing member 34 by the lifting power element 33, and adjusting the horizontal position of the fixing member 34 by the slider 31. The cable lifting device 100 is simple in structure, labor-saving, efficient, safe and reliable.
Referring to fig. 1 to fig. 3, a method for processing a cable lifting device 100 according to an embodiment of the present invention includes the following steps:
positioning: after the cable is drawn into the tunnel and moved to a designated location on the ground, cable lifting devices 100 are spaced along the cable as needed.
Feeding: after the cable lifting device 100 is in place, the cable is secured to each fastener 34 and is ready for lifting.
Moving: after the cable is fastened, each lifting power element 33 drives the fixing element 34 to rise to a predetermined height, and then the translation power element 32 translates the fixing element 34 to a predetermined position. To achieve synchronous movement, the operation of each of the lifting power element 33 and the translation power element 32 is controlled by an online synchronous mechanism. Before moving, in order to make the cable be in the same horizontal plane, the method further comprises the following steps:
leveling: each lifting power element 33 first levels the fixing element 34 to a certain height to ensure that the cable is at the same level, so that the cable is kept horizontal during the lifting process.
Material stripping: after the fixing member 34 is moved to the proper position, the fixing member 34 is released, so that the cable is placed on the bracket, and the movement of the cable is completed.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A cable lifting device is used for placing a cable on a bracket and is characterized by comprising a moving mechanism, a supporting mechanism and a positioning mechanism; the moving mechanism comprises a base and a moving part connected with the base; the supporting mechanism comprises a supporting frame connected with the base and a guide rail connected with the supporting frame; the positioning mechanism comprises a sliding block connected with the guide rail, a translation power element connected with the sliding block, a lifting power element connected with the sliding block and a fixing piece connected with the lifting power element; the translation power element is used for driving the sliding block to be arranged on the guide rail in a sliding manner; the lifting power element is used for controlling the fixing piece to lift; the fixing piece is used for connecting the cable.
2. The cable hoist apparatus of claim 1, wherein the positioning mechanism further comprises a pulley coupled to the slider; the translation power element is used for driving the pulley to be arranged on the guide rail in a sliding mode.
3. The cable hoist according to claim 2, characterized in that the pulley is in meshing connection with a translatory power element.
4. The cable lifting device of claim 1, wherein the support mechanism further comprises a mount; the mounting seat is detachably connected to one end, far away from the base, of the supporting frame; the guide rail is pivoted to the mounting seat.
5. The cable hoist apparatus of claim 4, wherein the support mechanism further comprises a leveling power element; the leveling power element is used for leveling the guide rail; one end of the leveling power element is pivoted with the mounting seat, and the other end of the leveling power element is pivoted with one end of the guide rail.
6. The cable hoist apparatus of claim 1, further comprising a control mechanism; the control mechanism is in signal connection with the moving mechanism and the positioning mechanism; the control mechanism is used for controlling the operation of the moving mechanism and the positioning mechanism.
7. The cable lifting device of claim 6, wherein the control mechanism includes a movement control switch, a translation control switch, and a lift control switch; the movement control switch is used for controlling the operation of the moving part; the translation control switch is used for controlling the operation of the translation power element; the lifting control switch is used for controlling the operation of the lifting power element.
8. The cable hoist apparatus of claim 6, further comprising an online synchronization mechanism; and the online synchronization mechanism is in signal connection with the positioning mechanism.
9. The cable hoist apparatus of claim 1, wherein the moving mechanism further comprises a first support leg, a second support leg, and a third support leg connected to the base; the first supporting leg, the second supporting leg and the third supporting leg are used for fixing the base.
10. A method of manufacturing a cable lifting device, comprising the cable lifting device of claim 1, by the steps of:
positioning: arranging the cable lifting devices at intervals along the cable;
feeding: after the cable lifting device is in place, fastening the cables by the fixing pieces;
moving: after the cable is fastened, after each lifting power element drives the fixing element to ascend to a preset height, the translation power element translates the fixing element to a preset position;
material stripping: and after the fixing piece is moved in place, the fixing piece is loosened, so that the cable is placed on the bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911015023.9A CN110668326A (en) | 2019-10-24 | 2019-10-24 | Cable lifting device and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911015023.9A CN110668326A (en) | 2019-10-24 | 2019-10-24 | Cable lifting device and processing method |
Publications (1)
| Publication Number | Publication Date |
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| CN110668326A true CN110668326A (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911015023.9A Pending CN110668326A (en) | 2019-10-24 | 2019-10-24 | Cable lifting device and processing method |
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| CN (1) | CN110668326A (en) |
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| CN106786185A (en) * | 2016-12-23 | 2017-05-31 | 上海久隆电力（集团）有限公司 | A kind of elevator laid for tunnel inner cable |
| CN206318615U (en) * | 2016-12-23 | 2017-07-11 | 上海久隆电力（集团）有限公司 | A kind of raising beam mechanism of the elevator laid for tunnel inner cable |
| CN107879269A (en) * | 2017-11-08 | 2018-04-06 | 国网河南省电力公司郑州供电公司 | The electronic lifting bracket of cable tunnel inner column formula cable |
| CN211255050U (en) * | 2019-10-24 | 2020-08-14 | 广州供电局有限公司 | Cable lifting device |
-
2019
- 2019-10-24 CN CN201911015023.9A patent/CN110668326A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1410944A1 (en) * | 2002-10-17 | 2004-04-21 | Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H. | Method for installing a catenary wire and machine |
| CN205838386U (en) * | 2016-06-02 | 2016-12-28 | 深圳市茂华装饰工程有限公司 | A kind of lifting mobile device for delivery unit plate |
| CN106786185A (en) * | 2016-12-23 | 2017-05-31 | 上海久隆电力（集团）有限公司 | A kind of elevator laid for tunnel inner cable |
| CN206318615U (en) * | 2016-12-23 | 2017-07-11 | 上海久隆电力（集团）有限公司 | A kind of raising beam mechanism of the elevator laid for tunnel inner cable |
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Effective date of registration: 20200925 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant before: GUANGZHOU POWER SUPPLY Co.,Ltd. |
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