CN105293216A - Wire take-up and tensioning method for electric power construction - Google Patents

Wire take-up and tensioning method for electric power construction Download PDF

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Publication number
CN105293216A
CN105293216A CN201510711277.XA CN201510711277A CN105293216A CN 105293216 A CN105293216 A CN 105293216A CN 201510711277 A CN201510711277 A CN 201510711277A CN 105293216 A CN105293216 A CN 105293216A
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phase motor
reel
motor
take
wire
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范冉
徐文超
戈杰
王昌庭
刘国瑞
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Guo Wang Jining Of Shandong Province City Rencheng District Electric Co
State Grid Corp of China SGCC
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Guo Wang Jining Of Shandong Province City Rencheng District Electric Co
State Grid Corp of China SGCC
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Priority to CN201510711277.XA priority Critical patent/CN105293216A/en
Publication of CN105293216A publication Critical patent/CN105293216A/en
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Abstract

The invention discloses a wire take-up and tensioning method for electric power construction. An improved wire tensioning device is adopted for operation. The improved wire tensioning device comprises a machine body, a first wire winding wheel, a second wire winding wheel, a first three-phase motor, a first speed reducer, a second three-phase motor, a second speed reducer, a rear wheel, a machine rear base, a front wheel, a drive motor and a control box, wherein the machine body is fixedly welded to the machine rear base; the first three-phase motor and the second three-phase motor are fixedly installed at the two ends of the machine rear base respectively; the first wire winding wheel and the second wire winding wheel are connected between the first three-phase motor and the second three-phase motor through a first drive shaft and a second drive shaft; the first wire winding wheel and the second wire winding wheel are connected through a third drive shaft. The wire take-up and tensioning method for electric power construction is suitable for working under various environments, flexible to work and stable in working, does not need a large number of manpower and large devices, saves a large number of labor and material resources, and avoids safety accidents occurring in the wire tensioning process.

Description

一种电力施工用收线紧线方法A wire tightening method for electric power construction

技术领域technical field

本发明涉及电力施工设备技术领域,具体为一种电力施工用收线紧线方法。The invention relates to the technical field of electric power construction equipment, in particular to a wire tightening method for electric power construction.

背景技术Background technique

近几年,为了解决电网“卡脖子”、“低电压”问题,满足广大用户日益增长的用电需求,国家电网全面启动了各项电网升级改造工程。In recent years, in order to solve the "stuck neck" and "low voltage" problems of the power grid and meet the increasing electricity demand of the majority of users, the State Grid has launched various power grid upgrading and reconstruction projects.

电力是以电能作为动力的能源。发明于19世纪70年代,电力的发明和应用掀起了第二次工业化高潮。成为人类历史18世纪以来,世界发生的三次科技革命之一,从此科技改变了人们的生活。20世纪出现的大规模电力系统是人类工程科学史上最重要的成就之一,是由发电、输电、变电、配电和用电等环节组成的电力生产与消费系统。它将自然界的一次能源通过机械能装置转化成电力,再经输电、变电和配电将电力供应到各用户。Electricity is an energy source powered by electrical energy. Invented in the 1870s, the invention and application of electricity set off the second industrialization climax. It has become one of the three scientific and technological revolutions in the world since the 18th century in human history. Since then, technology has changed people's lives. The large-scale power system that appeared in the 20th century is one of the most important achievements in the history of human engineering science. It is a power production and consumption system composed of power generation, power transmission, power transformation, power distribution and power consumption. It converts the primary energy of nature into electricity through mechanical energy devices, and then supplies electricity to various users through power transmission, transformation and distribution.

电能的传输,它和变电、配电、用电一起,构成电力系统的整体功能。通过输电,把相距甚远的(可达数千千米)发电厂和负荷中心联系起来,使电能的开发和利用超越地域的限制。The transmission of electric energy, together with power transformation, power distribution, and power consumption, constitutes the overall function of the power system. Through power transmission, power plants and load centers that are far apart (up to thousands of kilometers) are connected, so that the development and utilization of electric energy go beyond geographical restrictions.

输电线路按结构形式可分为架空输电线路和地下输电线路。前者由线路杆塔、导线、绝缘子等构成,架设在地面上;后者主要用电缆,敷设在地下(或水下)。Transmission lines can be divided into overhead transmission lines and underground transmission lines according to their structural forms. The former consists of line towers, wires, insulators, etc., and is erected on the ground; the latter mainly uses cables and is laid underground (or underwater).

架空输电线路施工过程中,不可避免的使用电缆放线收线设备。During the construction of overhead transmission lines, it is inevitable to use cable pay-off and take-up equipment.

电缆放线收线设备,一般用于各种线缆的生产和施工,通过放线可将线盘上的线匀直地输送到绕线机构上以供加工使用,传统的放线主要是通过电机带动线盘转动进行放线,由于线盘的大小不一样,在线盘不断的放线过程中,随着线圈直径的逐渐变小,线盘转动一圈放出的线长不等,无法保证放线机的匀速放线,而且在放线过程中,由于线盘驱动装置的转速快慢和绕线机构的驱动装置的转速快慢的变化,线的张力会发生变化,容易造成放线过多线束堆积或是线束过少卡机的现象发生,影响后期线束的剪切。Cable pay-off and take-up equipment is generally used in the production and construction of various cables. Through pay-off, the wire on the reel can be evenly and straightly transported to the winding mechanism for processing. The traditional pay-off is mainly through The motor drives the wire reel to rotate to pay off the wire. Because the size of the wire reel is different, during the continuous pay-off process of the wire reel, as the diameter of the coil gradually becomes smaller, the length of the wire released by one rotation of the wire reel is different, and the release cannot be guaranteed. The uniform speed pay-off of the wire machine, and during the pay-off process, due to the change of the speed of the wire reel drive device and the speed of the drive device of the winding mechanism, the tension of the wire will change, which will easily cause excessive wire bundle accumulation Or the phenomenon of jamming due to too few wire harnesses will affect the cutting of the later wire harnesses.

同样的在收线过程中也存在类似问题。Similarly, similar problems also exist in the line take-up process.

另外。在电力施工架线过程中,普遍使用人力或大型设备放线,有时候施工地段环境狭窄,人多或大型设备施展不开,或者在紧线、送线过程中容易发生安全事故。in addition. In the wiring process of electric power construction, manpower or large-scale equipment are generally used to lay out the wires. Sometimes the construction site environment is narrow, there are many people or large-scale equipment cannot be deployed, or safety accidents are prone to occur during the process of tightening and feeding wires.

申请号:201310240669.3申请日:2013-06-18名称为“电力放线车”的发明,提供一种移动灵活,使用方便的电力放线车;采用的技术方案是:电力放线车,包括:汽车车架、三角支撑架、线轮、液压千斤顶和液压驱动装置,三角形支架通过撑杆中的一个铰接在汽车车架的末端,液压千斤顶有两个,液压千斤顶的活塞杆端头分别铰接在支撑轴所在三角形支架顶点对面的边上,液压千斤顶的缸体端头均铰接在汽车车架上;本发明适用于各种电力、通讯部门。Application number: 201310240669.3 Application date: 2013-06-18 The invention named "electric wire pay-off car" provides a flexible and easy-to-use electric power pay-off car; the technical solution adopted is: electric power pay-off car, including: Automobile frame, triangular support frame, wire wheel, hydraulic jack and hydraulic driving device, the triangular support is hinged at the end of the automobile frame through one of the struts, there are two hydraulic jacks, and the ends of the piston rods of the hydraulic jack are respectively hinged on the On the side opposite to the vertex of the triangular support where the support shaft is located, the cylinder head of the hydraulic jack is hinged on the vehicle frame; the invention is applicable to various electric power and communication departments.

申请号:201410651085.X申请日:2014-11-17,名称为“一种电力放线导向装置”的发明,包括圆盘,在圆盘的中心处固设挂杆,挂杆的另一端设挂环,在圆盘上沿径向方向设置多个圆盘滑轮支架,每个圆盘滑轮支架端部上设与其螺纹连接的调节螺杆,调节螺杆上设螺母,在每个调节螺杆外端部分别设与其螺纹连接的滑轮支架,每个滑轮支架上设滑轮,在每个滑轮的轮槽面上敷设光滑层。在放线施工时,本发明能够方便、及时地减小碳纤维复合芯铝绞线的弯曲度,确保其不受损伤。Application number: 201410651085.X Application date: 2014-11-17, the invention named "a kind of electric power pay-off guide device", including a disc, a hanging rod is fixed at the center of the disc, and the other end of the hanging rod is set Hanging ring, a plurality of disc pulley brackets are arranged radially on the disc, an adjusting screw threadedly connected to the end of each disc pulley bracket is provided, a nut is arranged on the adjusting screw, and a nut is arranged on the outer end of each adjusting screw Pulley brackets threadedly connected with the pulley brackets are arranged respectively, pulleys are arranged on each pulley bracket, and a smooth layer is laid on the groove surface of each pulley. During setting-out construction, the invention can conveniently and timely reduce the bending degree of the carbon fiber composite core aluminum stranded wire to ensure that it is not damaged.

申请号:201210439497.8申请日:2012-10-30。名称为“电力电缆装载放线盘”的发明公开了一种电力电缆装载放线盘,本发明的目的是设计一种结构合理,使用方便的电力电缆装载放线盘。本发明的技术方案是,一种电力电缆装载放线盘,它包括线轴,线轴上设有三角架。本发明结构合理,使用效果较好,可以方便对电力电缆进行快速铺装,有效的提高施工效率。Application number: 201210439497.8 Application date: 2012-10-30. The invention titled "power cable load pay-off reel" discloses a power cable load pay-off reel. The purpose of the invention is to design a power cable load pay-off reel with reasonable structure and convenient use. The technical proposal of the present invention is a power cable loading pay-off reel, which includes a bobbin on which a tripod is arranged. The invention has reasonable structure and better application effect, can conveniently and quickly lay power cables, and effectively improves construction efficiency.

以上现有公开专利从不同角度对电缆施工过程的问题进行了解决,但是都没有涉及在作业空间狭窄条件如何高效收线放线的难题。The above existing published patents have solved the problems in the cable construction process from different angles, but none of them involve the difficult problem of how to efficiently take up and set out wires in a narrow working space.

亟需一种新的、适用于各种环境下电力施工用收线紧线方法,提高作业效率。There is an urgent need for a new wire-tightening method suitable for electric power construction in various environments to improve work efficiency.

发明内容Contents of the invention

本发明的目的在于克服现有技术中存在的缺点,提供一种电力施工用收线紧线方法,以解决上述背景技术中提出的问题。可有效的解决在电力施工地段环境狭窄,人多或大型设备施展不开的地方,高效进行收线紧线操作。The purpose of the present invention is to overcome the shortcomings in the prior art, and provide a wire-tightening method for electric power construction, so as to solve the problems raised in the above-mentioned background technology. It can effectively solve the problem of efficient winding and tightening operations in places where the environment of the power construction site is narrow, where there are many people or where large-scale equipment cannot be deployed.

为实现上述目的,本发明提供如下技术方案:一种电力施工用收线紧线方法,采用改进的收线紧线装置进行操作,该装置包括机体、第一绕线轮、第二绕线轮、第一三相电动机、第一减速机、第二三相电动机、第二减速机、后轮、机后座、前轮、驱动电机和控制箱;所述机体与机后座固定焊接,机后座两端固定安装有第一三相电动机和第二三相电动机;所述第一三相电动机和第二三相电动机之间分别通过第一驱动轴和第二驱动轴连接有第一绕线轮和第二绕线轮;所述第一绕线轮与第二绕线轮之间通过第三驱动轴连接;所述第一三相电动机上端设有与之电连接的第一减速机,第二三相电动机上端设有与之电连接的第二减速机;所述机体上端还设置控制三相电动机转动的控制箱。In order to achieve the above object, the present invention provides the following technical solutions: a method for taking up and tightening wires for electric power construction, which is operated by an improved wire taking up and tightening device, the device includes a machine body, a first winding wheel, a second winding wheel , the first three-phase motor, the first reducer, the second three-phase motor, the second reducer, the rear wheel, the rear seat of the machine, the front wheel, the driving motor and the control box; the body and the rear seat of the machine are fixedly welded, and the machine A first three-phase motor and a second three-phase motor are fixedly installed at both ends of the rear seat; a first winding shaft is connected between the first three-phase motor and the second three-phase motor through a first drive shaft and a second drive shaft respectively. The wire wheel and the second winding wheel; the first winding wheel and the second winding wheel are connected through a third drive shaft; the upper end of the first three-phase motor is provided with a first reducer electrically connected thereto The upper end of the second three-phase motor is provided with a second reducer electrically connected thereto; the upper end of the body is also provided with a control box for controlling the rotation of the three-phase motor.

优选的,所述控制箱内设有用于收线紧线的变频控制器,变频控制器控制第一三相电动机和第二三相电动机的运转。Preferably, the control box is provided with a frequency conversion controller for taking up and tightening the wire, and the frequency conversion controller controls the operation of the first three-phase motor and the second three-phase motor.

优选的,所述机体上端还安装与控制箱紧密连接的驱动电机,驱动电机与前轮的齿轮驱动连接。Preferably, a drive motor tightly connected to the control box is installed on the upper end of the body, and the drive motor is connected to the gear of the front wheel.

优选的,所述第一绕线轮和第二绕线轮大小、形状均相同。Preferably, the size and shape of the first winding wheel and the second winding wheel are the same.

与现有技术相比,本发明的有益效果是:该电力施工用收线紧线方法,适用于各种环境下工作,工作灵活,不需要大量的人力和大型设备,节省大量的人力物力,工作稳定,避免在紧线过程中出现安全事故。Compared with the prior art, the beneficial effects of the present invention are: the method for taking up and tightening wires for electric power construction is suitable for working in various environments, the work is flexible, does not require a lot of manpower and large equipment, and saves a lot of manpower and material resources. The work is stable, avoiding safety accidents during the tightening process.

附图说明Description of drawings

图1为本发明结构示意图。Fig. 1 is a schematic diagram of the structure of the present invention.

图中:1机体、2第一绕线轮、3第二绕线轮、4第一三相电动机、41第一驱动轴、5第一减速机、6第二三相电动机、61第二驱动轴、7第二减速机、8后轮、9机后座、10前轮、11驱动电机、12控制箱和13第三驱动轴。In the figure: 1 machine body, 2 the first winding wheel, 3 the second winding wheel, 4 the first three-phase motor, 41 the first drive shaft, 5 the first reducer, 6 the second three-phase motor, 61 the second drive Shaft, 7 second reducer, 8 rear wheel, 9 machine rear seat, 10 front wheel, 11 drive motor, 12 control box and 13 third drive shaft.

具体实施方式detailed description

下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

实施例Example

请参阅图1,本发明提供一种一种电力施工用收线紧线方法,采用新型的收线紧线装置进行操作,该装置包括机体1、第一绕线轮2、第二绕线轮3、第一三相电动机4、第一减速机5、第二三相电动机6、第二减速机7、后轮8、机后座9、前轮10、驱动电机11和控制箱12;所述机体1与机后座9固定焊接,机后座9两端固定安装有第一三相电动机4和第二三相电动机6;所述第一三相电动机4和第二三相电动机6之间分别通过第一驱动轴41和第二驱动轴61连接有第一绕线轮2和第二绕线轮3;所述第一绕线轮2与第二绕线轮3之间通过第三驱动轴13连接;所述第一三相电动机4上端设有与之电连接的第一减速机5,第二三相电动机6上端设有与之电连接的第二减速机7;所述机体1上端还设置控制三相电动机转动的控制箱12。Please refer to Fig. 1, the present invention provides a kind of take-up and tightening method for electric power construction, which adopts a new-type take-up and tightening device for operation, and the device includes a body 1, a first winding wheel 2, a second winding wheel 3. The first three-phase motor 4, the first reducer 5, the second three-phase motor 6, the second reducer 7, the rear wheel 8, the rear seat 9, the front wheel 10, the drive motor 11 and the control box 12; The machine body 1 is fixedly welded with the machine back seat 9, and the two ends of the machine back seat 9 are fixedly installed with a first three-phase motor 4 and a second three-phase motor 6; The first winding wheel 2 and the second winding wheel 3 are connected through the first driving shaft 41 and the second driving shaft 61 respectively; the first winding wheel 2 and the second winding wheel 3 are connected through a third The drive shaft 13 is connected; the upper end of the first three-phase motor 4 is provided with a first reducer 5 electrically connected thereto, and the upper end of the second three-phase motor 6 is provided with a second reducer 7 electrically connected thereto; the body A control box 12 for controlling the rotation of the three-phase motor is also arranged on the top of 1.

所述控制箱12内设有用于收线紧线的变频控制器,变频控制器控制第一三相电动机4和第二三相电动机6的运转,两台三相电动机均为3KW;所述机体1上端还安装与控制箱12紧密连接的驱动电机11,驱动电机11与前轮10的齿轮驱动连接;所述第一绕线轮2和第二绕线轮3大小、形状均相同;Described control box 12 is provided with the frequency conversion controller that is used for take-up tight line, and frequency conversion controller controls the operation of first three-phase motor 4 and second three-phase motor 6, and two three-phase motors are 3KW; The body 1. A driving motor 11 closely connected to the control box 12 is also installed on the upper end, and the driving motor 11 is driven and connected to the gear of the front wheel 10; the first winding wheel 2 and the second winding wheel 3 have the same size and shape;

使用方法:操作人员使用该电力施工用收线紧线装置进行操作时,当该装置处于牵引收线状态时,装有三相电动机的绕线轮,电能变为动能,通过控制箱12内的变频控制器控制绕线轮带动牵引绳运转;紧线状态时,选择适合的线轴,设置在三相电动机上端的减速电机控制电动机的运转速度。How to use: When the operator uses the take-up and tightening device for electric power construction to operate, when the device is in the state of traction and take-up, the winding wheel equipped with a three-phase motor will convert the electric energy into kinetic energy, and through the frequency conversion in the control box 12 The controller controls the reel to drive the traction rope to run; when the line is tight, select the appropriate spool, and the deceleration motor installed on the upper end of the three-phase motor controls the running speed of the motor.

收线时是由动力(柴油机、汽油机)带动减速机将力传到大线轴的通轴上,使线轴转动将线卷到线轴上收回并可将新线带回;导线、缆线不分粗细型号。When the line is taken up, the power (diesel engine, gasoline engine) drives the reducer to transmit the force to the through shaft of the large spool, so that the spool rotates and the line is wound on the spool to be retracted and the new line can be brought back; the wires and cables are regardless of thickness. model.

通过自动化可控的设备装置进行作业,减少人工作业的不规范和人力限制,提高控制水平,减少人工参与,提高作业速度和简便性,尤其适合在空间有限情况下的作业。Operations are carried out through automated and controllable equipment and devices, reducing irregularities in manual operations and manpower restrictions, improving control levels, reducing manual participation, improving operation speed and simplicity, and are especially suitable for operations in limited space.

对于本领域技术人员而言,显然本发明不限于上述示范性实施例的细节,而且在不背离本发明的精神或基本特征的情况下,能够以其他的具体形式实现本发明。因此,无论从哪一点来看,均应将实施例看作是示范性的,而且是非限制性的,本发明的范围由所附权利要求而不是上述说明限定,因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

此外,应当理解,虽然本说明书按照实施方式加以描述,但并非每个实施方式仅包含一个独立的技术方案,说明书的这种叙述方式仅仅是为清楚起见,本领域技术人员应当将说明书作为一个整体,各实施例中的技术方案也可以经适当组合,形成本领域技术人员可以理解的其他实施方式。In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (5)

1. a power construction take-up line tightening method, is characterized in that:
(1) wire tensioning device, this device comprises body (1), the first reel (2), the second reel (3), the first three-phase motor (4), the first reductor (5), the second three-phase motor (6), the second reductor (7), trailing wheel (8), machine back seat (9), front-wheel (10), drive motor (11) and control box (12); It is characterized in that: described body (1) fixedly welds with machine back seat (9), machine back seat (9) two ends are installed with the first three-phase motor (4) and the second three-phase motor (6); The first reel (2) and the second reel (3) is connected with respectively by the first axle drive shaft (41) and the second axle drive shaft (61) between described first three-phase motor (4) and the second three-phase motor (6); Described first reel (2) is connected by the 3rd axle drive shaft (13) with between the second reel (3); Described first three-phase motor (4) upper end is provided with the first reductor (5) be electrically connected with it, and the second three-phase motor (6) upper end is provided with the second reductor (7) be electrically connected with it; Described body (1) upper end also arranges the control box (12) controlling three-phase motor and rotate;
(2) this device is adopted to carry out the operation of take-up stringing.
2. a kind of power construction take-up line tightening method according to claim 1, it is characterized in that: be provided with the frequency-variable controller for take-up stringing in described control box (12), frequency-variable controller controls the running of the first three-phase motor (4) and the second three-phase motor (6).
3. a kind of power construction take-up line tightening method according to claim 1, it is characterized in that: described body (1) upper end is also installed and control box (12) close-connected drive motor (11), and drive motor (11) is connected with the gear drive of front-wheel (10).
4. a kind of power construction take-up line tightening method according to claim 1, is characterized in that: described first reel (2) and the second reel (3) size, shape are all identical.
5. a kind of power construction take-up line tightening method according to claim 1, is characterized in that:
Adopt this device to carry out take-up stringing in described step (2) to be operating as, when this device is in traction take-state, the reel of three-phase motor is housed, and electric energy becomes kinetic energy, controls reel drive hauling rope running by the frequency-variable controller in control box 12; During stringing state, select the bobbin be applicable to, the reducing motor being arranged on three-phase motor upper end controls the operating speed of electrical motor.
CN201510711277.XA 2015-10-28 2015-10-28 Wire take-up and tensioning method for electric power construction Pending CN105293216A (en)

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106364493A (en) * 2016-09-20 2017-02-01 巨力索具股份有限公司 Cableway driving device
CN107453280A (en) * 2017-08-31 2017-12-08 国网山东省电力公司郓城县供电公司 A kind of intelligent wire tensioning device
CN108529349A (en) * 2018-05-04 2018-09-14 国网内蒙古东部电力有限公司电力科学研究院 A kind of long conducting wire draw off gear and the long wire collection method of break line type, continuous wire type
CN112186638A (en) * 2020-09-27 2021-01-05 国网河南省电力公司三门峡市陕州供电公司 Cable construction tightening device for high-voltage power grid

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106364493A (en) * 2016-09-20 2017-02-01 巨力索具股份有限公司 Cableway driving device
CN106364493B (en) * 2016-09-20 2018-08-28 巨力索具股份有限公司 A kind of cableway driving device
CN107453280A (en) * 2017-08-31 2017-12-08 国网山东省电力公司郓城县供电公司 A kind of intelligent wire tensioning device
CN108529349A (en) * 2018-05-04 2018-09-14 国网内蒙古东部电力有限公司电力科学研究院 A kind of long conducting wire draw off gear and the long wire collection method of break line type, continuous wire type
CN108529349B (en) * 2018-05-04 2024-05-31 国网内蒙古东部电力有限公司电力科学研究院 A long wire collecting and releasing device and a disconnected and unconnected long wire collecting method
CN112186638A (en) * 2020-09-27 2021-01-05 国网河南省电力公司三门峡市陕州供电公司 Cable construction tightening device for high-voltage power grid

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Application publication date: 20160203