CN105540353B - A kind of multi-functional wire barrow - Google Patents
A kind of multi-functional wire barrow Download PDFInfo
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- CN105540353B CN105540353B CN201610048943.0A CN201610048943A CN105540353B CN 105540353 B CN105540353 B CN 105540353B CN 201610048943 A CN201610048943 A CN 201610048943A CN 105540353 B CN105540353 B CN 105540353B
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- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 13
- 238000010276 construction Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 9
- 230000003137 locomotive effect Effects 0.000 abstract 1
- 230000002457 bidirectional effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/40—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable
- B65H75/42—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable attached to, or forming part of, mobile tools, machines or vehicles
- B65H75/425—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable attached to, or forming part of, mobile tools, machines or vehicles attached to, or forming part of a vehicle, e.g. truck, trailer, vessel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/34—Handled filamentary material electric cords or electric power cables
Landscapes
- Handcart (AREA)
- Electric Cable Installation (AREA)
Abstract
本发明属于电力施工工具技术领域，尤其涉及一种多功能放线车。牵引车头有两个分别位于车身前后两端，分别配有牵引器及驾驶室，车身上设有电机、调速器及钢丝绳线轴，电机的输出轴依次与调速器、钢丝绳线轴的轴端相连接，钢丝绳线轴下方设有支撑架和千斤顶，车身两侧设有用于捋直线缆的吊环，吊环为卡扣式结构，电机为可以实现正转和反转的双向电机。本发明整个放线车方向转换方便快捷；改变传统线缆拉扯过程中与路面磨损严重的方式，改为放线车移动，增加了线缆的使用寿命。本装置使用方便、省时省力，集装卸、运输和放线为一体，结构合理，自动化程度高,具有很强的实用性。
The invention belongs to the technical field of electric power construction tools, in particular to a multifunctional pay-off vehicle. There are two traction locomotives located at the front and rear ends of the body, respectively equipped with a tractor and a cab. The body is equipped with a motor, a governor and a wire rope spool. Connection, there is a support frame and a jack under the wire rope spool, and there are lifting rings on both sides of the vehicle body for straightening the cables. The direction of the whole pay-off car of the present invention is convenient and fast; the traditional mode of severe wear and tear on the road surface in the pulling process of the cable is changed to the movement of the pay-off car, which increases the service life of the cable. The device is easy to use, saves time and labor, and integrates loading and unloading, transportation and setting out into one, with reasonable structure, high degree of automation, and strong practicability.
Description
技术领域technical field
本发明属于电力施工工具技术领域，涉及一种放线车，尤其涉及一种多功能放线车。The invention belongs to the technical field of electric power construction tools, and relates to a pay-off vehicle, in particular to a multifunctional pay-off vehicle.
背景技术Background technique
在电力施工行业中，缠绕回收旧线或者施放布置新线是工人最普遍的劳动过程，放线过程劳动强度大，需要多个人共同配合，工作效率低下并且存在一定的危险性。为此放线车制造和设计工艺越来越多，但是目前现有的放线车大都工作效率低下，自动化程度不高，放线时也会容易出现打结，线缆散乱等现象。特别的，在新农村改造过程中，布线车由于其结构不合理，受到地理气候环境或者道路状况的影响，一般的放线车难以进入，传统电缆的布设方式是人工放线，将电缆直接放置在地面上，电缆从电缆盘的端面抽出，存在三个缺陷：一是电缆每放出一圈即被扭转一圈，连续放线时，电缆被连续扭转，这种扭转对电缆造成严重的质量隐患；二是放线时将电缆拖拽至需要位置，不可避免造成电缆与地面摩擦，造成电缆擦伤；三是电缆需要架设的高度较高时，还需要设置另外的放线架将电缆盘升至一定高度，再由操作人员手动或绞磨机牵引电缆进行布设工作，往往需要多个人协力完成，工作效率低，工作劳动强度较大。In the electric power construction industry, winding and recycling old wires or laying out new wires is the most common labor process for workers. The wire-releasing process is labor-intensive and requires the cooperation of multiple people. The work efficiency is low and there is a certain degree of danger. For this reason, there are more and more manufacturing and design techniques for the pay-off car, but most of the existing pay-off cars have low work efficiency and low degree of automation, and they are also prone to knotting and scattered cables when paying off. In particular, during the transformation of the new countryside, due to its unreasonable structure, the wiring car is affected by the geographical climate environment or road conditions, and it is difficult for ordinary pay-off vehicles to enter. The traditional cable laying method is manual laying, and the cables are placed directly On the ground, the cable is pulled out from the end face of the cable reel, and there are three defects: one is that the cable is twisted once every time it is released, and the cable is twisted continuously when it is continuously paid out. ; The second is to drag the cable to the required position when unwinding, which will inevitably cause friction between the cable and the ground, causing cable scratches; the third is that when the cable needs to be erected at a high height, it is necessary to set up another pay-off frame to lift the cable reel to At a certain height, the operator manually or the winch pulls the cable to lay the work, which often requires the cooperation of multiple people to complete, the work efficiency is low, and the work labor intensity is relatively large.
发明内容Contents of the invention
本发明针对传统放线车结构不合理，施工效率低，放线过程中容易打结等问题而提出一种新型的多功能放线车。The invention proposes a new type of multifunctional pay-off car for the problems of unreasonable structure, low construction efficiency and easy knotting during the pay-off process of the traditional pay-off car.
为了达到上述目的，本发明是采用下述的的技术方案实现的：In order to achieve the above object, the present invention is achieved by adopting the following technical solutions:
一种多功能放线车，包括车身、牵引车头及车轮，所述牵引车头有两个，所述牵引车头分别位于车身前后两端，所述两个牵引车头分别配有牵引器及驾驶室，所述车身上设有电机、调速器及钢丝绳线轴，所述电机的输出轴依次与调速器、钢丝绳线轴的轴端相连接，所述钢丝绳线轴下方设有支撑架和千斤顶，所述车身两侧设有用于捋直线缆的吊环，所述吊环为卡扣式结构，所述电机为可以实现正转和反转的双向电机。A multifunctional pay-off car, comprising a vehicle body, a tractor head and wheels, the tractor head has two, the tractor head is located at the front and rear ends of the body, and the two tractor heads are respectively equipped with a tractor and a cab, The vehicle body is provided with a motor, a governor and a wire rope spool, and the output shaft of the motor is connected with the governor and the shaft end of the wire rope spool in turn, and a support frame and a jack are arranged below the wire rope spool. There are lifting rings on both sides for straightening the cables. The lifting rings are snap-fit structures, and the motor is a bidirectional motor that can realize forward rotation and reverse rotation.
作为优选，所述钢丝绳线轴的轴杆两侧分别设置一块防止线缆散乱的档杆，所述档杆与钢丝绳线轴的轴杆铰链连接。Preferably, on both sides of the shaft of the wire rope spool, a gear bar is respectively provided to prevent the cables from being scattered, and the gear bar is hingedly connected to the shaft of the wire rope spool.
作为优选，所述车轮数量为四个，所述每个车轮两侧各设置有一个万向轮，所述万向轮设有定位锁。Preferably, the number of the wheels is four, and a universal wheel is arranged on both sides of each wheel, and the universal wheel is provided with a positioning lock.
作为优选，所述驾驶室内设有控制车身前进速度以及调速器放线速度的控制仪。Preferably, a controller is installed in the cab to control the forward speed of the vehicle body and the wire-feeding speed of the governor.
作为优选，所述可以实现正转和反转的双向电机的控制按钮位于驾驶室内的控制仪上。Preferably, the control button of the bidirectional motor capable of forward rotation and reverse rotation is located on the controller in the cab.
作为优选，所述驾驶室内还设有一个常用工具箱。Preferably, a common tool box is also provided in the cab.
与现有技术相比，本发明的优点和积极效果在于：Compared with prior art, advantage and positive effect of the present invention are:
本发明将放线架和运输车结合在一起，让导线的装卸、运输和放线更加方便，不需另外再用放线架，操作工人的人数大量减少，节省成本；自动化程度高，省时省力，在车身前后各设置驾驶室和牵引车头，并且在车身下端设置多个万向轮，整个放线车方向转换方便快捷；而且较大的车轮共四个呈前后一排设置，使得车身整体较窄，减少因道路狭窄而无法施工的现象，进一步地，为了增加车身稳定性而在车轮两侧设置较小的万向轮；在布线和回收线缆过程中，改变传统线缆拉扯过程中与路面磨损严重的方式，改为放线车移动，增加了线缆的使用寿命。本装置使用方便、省时省力，集装卸、运输和放线为一体，结构合理，自动化程度高，很大程度上减轻了工人操作的劳动力，具有很强的实用性。The invention combines the pay-off rack and the transport vehicle together, making the loading and unloading, transportation and pay-out of the wires more convenient, without additional use of the pay-off rack, greatly reducing the number of operators and saving costs; high degree of automation and time saving Labor-saving, the driver's cab and tractor head are set at the front and rear of the car body, and a plurality of universal wheels are set at the lower end of the car body, so that the direction change of the whole pay-off car is convenient and fast; Narrower, reducing the phenomenon that construction cannot be done due to narrow roads. Further, in order to increase the stability of the vehicle body, smaller universal wheels are set on both sides of the wheels; in the process of wiring and recycling cables, the traditional cable pulling process is changed. In the case of serious wear and tear on the road surface, it is changed to a pay-off car to move, which increases the service life of the cable. The device is easy to use, saves time and effort, integrates loading and unloading, transportation and pay-off, has a reasonable structure and a high degree of automation, greatly reduces the labor force of workers' operation, and has strong practicability.
附图说明Description of drawings
图1为本发明的多功能放线车结构示意图，图2为本发明的多功能放线车结构仰视图。Fig. 1 is a schematic structural view of the multifunctional pay-off vehicle of the present invention, and Fig. 2 is a bottom view of the structure of the multifunctional pay-off vehicle of the present invention.
各附图标记为：1车身，2牵引车头，3车轮，41、42牵引器，51、52驾驶室，6电机，7调速器，8钢丝绳线轴，9支撑架，10千斤顶，11吊环，12档杆，13万向轮，14定位锁。Each reference sign is: 1 body, 2 tractor head, 3 wheels, 41,42 tractor, 51,52 cab, 6 motor, 7 governor, 8 wire rope spool, 9 support frame, 10 jack, 11 suspension ring, 12 gear levers, 13 universal wheels, 14 positioning locks.
具体实施方式detailed description
为了能够更清楚地理解本发明的上述目的、特征和优点，下面结合附图和实施例对本发明做进一步说明。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是，本发明还可以采用不同于在此描述的其他方式来实施，因此，本发明并不限于下面公开说明书的具体实施例的限制。In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways than described here. Therefore, the present invention is not limited to the specific embodiments disclosed below. limit.
实施例1，如图1所示的本实施例中提供一种多功能的放线车，包括车身1、牵引车头2及车轮3，整个车身为长窄扁平的长方体形状，牵引车头2是提供放线车前进动力和控制整个车身前进方向的部件。在本实施例中的牵引车头2共有两个，两个牵引车头2分别位于车身前后两端，并且两个牵引车头2分别配有牵引器41、42及驾驶室51、52。在放线车放线工作进行的过程中，操作者在驾驶室51中操控牵引器41牵引车身向前移动，完成布线工作后，操作者可以去往车身另一端的驾驶室52中，操控另一个牵引器牵42引车身往相反的方向移动，进行收线的工作。这种操作方式改变以往将线缆从地上拖拉回收的方式，减少线缆与路面的摩擦，降低线缆的磨损情况，增加线缆的使用寿命。车身上设有电机6、调速器7及钢丝绳线轴8，电机的输出轴依次与调速器7、钢丝绳线轴8的轴端相连接。电机6和调速器7共同调控钢丝绳线轴8的旋转速率，进而控制钢丝绳线轴8放线的速率。在钢丝绳线轴8下方设有支撑架9和千斤顶10，千斤顶10用以控制钢丝绳线轴8在支撑架9位置的高低，线缆在钢丝绳线轴8上缠绕量过多时，千斤顶10控制钢丝绳线轴8向上移动，提供更多线缆在钢丝绳线轴8上的放置空间。车身两侧设有用于捋直线缆的吊环11，吊环11为卡扣式结构，线缆铺设和回收前都经过吊环11捋直，可以防止线缆散乱，影响后续的继续使用。电机6为可以实现正转和反转的双向电机，放线结束并且施工完成之后如果需要将线缆重新缠绕到钢丝绳线轴8上，或者线缆铺设过多需要回收使用时，在电机6带动下将钢丝绳线轴8向相反的方向旋转，操作人员可以选择去往车身另一端的驾驶室52中进行操作，方便快捷，减少了施工的难度，操作也更加安全方便。Embodiment 1, provide a kind of multi-functional pay-off car in the present embodiment as shown in Figure 1, comprise vehicle body 1, traction vehicle head 2 and wheel 3, whole vehicle body is long and narrow flat cuboid shape, traction vehicle head 2 is to provide The forward power of the pay-off car and the components that control the forward direction of the entire vehicle body. There are two tractor heads 2 in this embodiment, and the two tractor heads 2 are respectively located at the front and rear ends of the vehicle body, and the two tractor heads 2 are equipped with tractors 41, 42 and cabs 51, 52 respectively. During the process of the pay-off work of the pay-off vehicle, the operator controls the tractor 41 in the cab 51 to pull the vehicle body forward. After completing the wiring work, the operator can go to the cab 52 at the other end of the vehicle body to control the A tractor pulls 42 to move the vehicle body in the opposite direction to carry out the work of taking up the wire. This operation mode changes the previous method of pulling and recovering cables from the ground, reduces the friction between the cables and the road surface, reduces the abrasion of the cables, and increases the service life of the cables. The vehicle body is provided with a motor 6, a governor 7 and a wire rope spool 8, and the output shaft of the motor is connected with the shaft ends of the governor 7 and the wire rope spool 8 successively. The motor 6 and the governor 7 jointly regulate the rotation rate of the wire rope spool 8 , and then control the wire rope spool 8 pay-off rate. Below the wire rope spool 8, a support frame 9 and a jack 10 are provided. The jack 10 is used to control the height of the wire rope spool 8 at the position of the support frame 9. When the cable is wound too much on the wire rope spool 8, the jack 10 controls the steel wire rope spool 8 to move upward. , to provide more cable placement space on the wire rope spool 8. Both sides of the vehicle body are provided with suspension rings 11 for straightening the cables. The suspension rings 11 are buckle-type structures. Before the cables are laid and recovered, they are straightened through the suspension rings 11, which can prevent the cables from being scattered and affect the subsequent continued use. Motor 6 is a bidirectional motor that can realize forward rotation and reverse rotation. Rotate the wire rope spool 8 in the opposite direction, and the operator can choose to go to the cab 52 at the other end of the vehicle body to operate, which is convenient and quick, reduces the difficulty of construction, and is safer and more convenient to operate.
为了进一步防止线缆在铺设和回收过程中的散乱，在钢丝绳线轴8的轴杆两侧分别设置一块防止线缆散乱的档杆12，主要是防止线缆在钢丝绳线轴8上缠绕过程中的散落。并且进一步地，将档杆12与钢丝绳线轴8的轴杆设置成铰链连接的方式，目的是为了方便取放电缆线的线盘。In order to further prevent the cables from being scattered during laying and recycling, a bar 12 to prevent the cables from being scattered is arranged on both sides of the shaft of the wire rope spool 8, mainly to prevent the cables from being scattered during the winding process on the wire rope spool 8 . And further, the gear lever 12 and the shaft rod of the wire rope spool 8 are arranged in a hinged connection mode, the purpose is to facilitate the taking and placing of the cable reel.
为了保证车身能够更好的移动，车身下部车轮3数量为四个，四个车轮3成一排前后设置，如图2所示，这种结构可以使整个车身1不至于太宽，避免很多狭窄的施工现场，放线车不能够穿越，造成施工不便，但是仅有排成一排的四个车轮车身1在不运行时会倾斜甚至歪倒。为了提高车身1的稳定性以及车身1移动的灵活性，为了方便车身1的旋转移动，在每个车轮3两侧各设置有一个万向轮13，并且在每个万向轮13上配套设有相应的定位锁14。既保证了在平移移动和转弯过程中的稳定性防止其倾斜，又保证了整个放线车在静止时的稳定，减少操作过程中的危险性，提高施工效率。In order to ensure that the vehicle body can move better, the number of wheels 3 at the lower part of the vehicle body is four, and the four wheels 3 are arranged in a row. As shown in Figure 2, this structure can make the entire vehicle body 1 not too wide and avoid many narrow spaces On the construction site, the pay-off vehicle cannot pass through, which causes inconvenience in construction, but only the four-wheel vehicle bodies 1 arranged in a row can tilt or even fall over when not in operation. In order to improve the stability of the vehicle body 1 and the flexibility of the movement of the vehicle body 1, in order to facilitate the rotation and movement of the vehicle body 1, a universal wheel 13 is respectively arranged on both sides of each wheel 3, and a supporting device is provided on each universal wheel 13. Corresponding positioning lock 14 is arranged. It not only ensures the stability during translational movement and turning to prevent it from tilting, but also ensures the stability of the whole pay-off car when it is stationary, reduces the danger in the operation process, and improves the construction efficiency.
为了更加方便操作和提高施工效率，在车身1前后两个驾驶室51、52内均设有控制车身1前进速度和后退速度以及调速器7放线速度的控制仪(图中未示出其具体结构)，并且可以实现正转和反转的双向电机的控制按钮位于驾驶室51、52内的控制仪上，操作者只需要在驾驶室51、52内便可以完成对放线车前进或者后退速度、调速器7放线速率以及电机6正转和反转方向转换这几个方面的控制，操作快捷简便，实用性强，自动化程度高，有效提高了放线车放线工作的效率，并且在驾驶室51、52内还设有一个常用工具箱，进一步提高了本发明的实用性。In order to facilitate the operation and improve the construction efficiency, the two cabs 51, 52 at the front and rear of the vehicle body 1 are provided with controllers for controlling the forward and backward speeds of the vehicle body 1 and the pay-off speed of the governor 7 (not shown in the figure). Concrete structure), and the control button of the bidirectional motor that can realize forward rotation and reverse rotation is located on the controller in the cab 51,52, and the operator only needs to be in the cab 51,52 to complete the advance or the pay-off car Reverse speed, speed governor 7 pay-off speed and motor 6 forward and reverse direction conversion are controlled. The operation is quick and easy, the practicability is strong, and the degree of automation is high, which effectively improves the efficiency of the pay-off car. , and also be provided with a tool box commonly used in cab 51,52, have improved the practicability of the present invention further.
以上所述，仅是本发明的较佳实施例而已，并非是对本发明作其它形式的限制，任何熟悉本专业的技术人员可能利用上述揭示的技术内容加以变更或改型为等同变化的等效实施例应用于其它领域，但是凡是未脱离本发明技术方案内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与改型，仍属于本发明技术方案的保护范围。The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention to other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or remodel it into an equivalent change. The embodiments are applied to other fields, but any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solutions of the present invention without departing from the content of the technical solutions of the present invention.
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| CN110282486A (en) * | 2019-06-14 | 2019-09-27 | 国网山东省电力公司临沂供电公司 | Pay-off device for electric power construction |
| CN113023460B (en) * | 2021-03-02 | 2022-07-22 | 山东齐林电力设备股份有限公司 | Cable paying-off and conveying method |
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