6 Ton Hydraulic Puller Stringing Equipment with Italian Reducer manufacturers and suppliers in China

Min. Order:	1 Set/Sets
Trade Term:	FOB,CFR,CIF
Payment Terms:	L/C, T/T
Place of Origin:	Zhejiang, China (Mainland)
Means of Transport:	Ocean, Land
Production Capacity:	10 sets per month

Packing:	container plywood case	Delivery Date:	30-45 days
Brand Name:	Dongfang	Cable Winch Puller:	6 Ton Hydraulic Puller Stringing Equipment
Max. pulling force:	6 Ton 60 KN	Max. pulling speed:	5 km per hour
Suitable:	for single or two conductors	Diameter of pulling rope:	18 mm diameter
Cummins Engine Power:	77 KW	Dimension:	3.8 X 2.1 X 2.3 M
Weight:	3000 KG

6 Ton Hydraulic Winch Puller is used for overhead transmission line single or two conductorsstringing. The machine is equipped with Water Cooled Cummins Engine and Rexroth Hydraulic Pump with closed hydraulic control system.

We are the first one in stringing equpment manufacture in China to get CE certificate.

1. SA-YQ60 Hydraulic Cable Puller

Item No.	07031
Model	SA-YQ60
Stringing capacity	1 PILOT WIRE ROPE
Max. Pulling Force (KN)	60
Continuous Max. Pulling Force (KN)	50
Speed at Max. continuous pull:	2.5km/h
Max. Pulling Speed (m/min)	5km/h
Root Diameter of Bull wheel (mm)	Φ460
Number of grooves	7
Max. Steel rope Diameter (mm)	Φ18
Model of Diesel Engine	Water cooled diesel engine
Power of Diesel Engine	77 KW
Rotate Speed of Engine (rpm)	2800
Electrical System	DC24V
Weight (kg)	3000
Dimension (m)	3.8 x 2.1 x 2.3

Application: The hydraulic puller is used to pull pilot wire rope for overhead transmission line Stringing. It is equipped with diesel engine and closed hydraulic system, it can be easily used and maintained

Features:

-With closed hydraulic circuit and variable displacement plunger pump, the pulling force could be step less controlled, and can be read on the line pull gauge.

-The max pulling force for stringing operation can be preset.

-Automatic over pulling protection system

-With the radiator imported from Germany, the machine has good heat dissipate performance.

-With a negative spring applied hydraulic released brake, and automatic overload protection.

-With hydraulic oil cooling system.

-Heat treated wear-proof steel bull wheels

-With rigid axle for towing at high speed, the machine looks beautiful.

-Integral self-loading reel winder with automatic level wind.

-Heavy duty R-tires with excellent shock-absorbing performance.

Main Components:

-Engine: Cummins water-cooled diesel engine (China)

-Main variable displacement hydraulic pump and main motor: Rexroth (Germany)

-Reducer: R.R. (Italian)

- Main hydraulic valve: Rexroth (BOSCH)

-Hydraulic instruments: WIKA (German)

-Radiator: AKG (German)

- The hydraulic reel winder is equipped with 1400mm diameter steel drum (GSP1400)

The 6 Ton puller can be used in mountain area to pull single or two conductors.

We have designed and produced whole series of hydraulic winch puller for overhead transmission line stringing up to 1000 KV in China.

Our Series of Hydraulic Winch Puller

Model	Max. Pulling Force	Usage	Max. Diameter of rope
SA-YQ30	30 KN	Single conductor or OPGW	13 mm
SA-YQ40	40 KN	Single conductor or OPGW	16 mm
SA-YQ60	60 KN	Single or Two Conductors	18 mm
SA-YQ90	90 KN	Two or Three Conductors	20 mm
SA-YQ180	180 KN	Three or Four Conductors	24 mm
SA-YQ220	220 KN	Four or Six conductors	30 mm
SA-YQ250	250 KN	Four or Six conductors	32 mm
SA-YQ300	300 KN	Four or Six conductors	38 mm
SA-YQ400	420 KN	Four or Six conductors	45 mm

5-6. SINGLE CONDUCTOR PULLEYS

Item No.	Model	Working Load (KN)	Conductor Range (mm)	Material of sheave	Weight (kg)
10104	SHDN508	20	≤25 mm	Nylon	16
10124	SHDN660	20	≤30 mm	Nylon	30

Application: The single nylon sheave stringing block is used for OPGW or single conductor stringing. The sheaves are all made of high strength MC nylon. All the sheaves are mounted on high strength heavy duty ball bearings. The frame of rollers is made of galvanized steel.

Stringing Swivel Joints

Item No.	Model	Dimension of Connector (mm)					Working Load (KN)	Weight (kg)
Item No.	Model	A	B	C	D	E	Working Load (KN)	Weight (kg)
17124	SLX-3	37	129	95	16	16	30	0.65
17125	SLX-5	42	154	116	18	17	50	1.5
17126	SLX-8	57	220	165	24	22	80	2.4

Application: It is used to pull conductors. Constructed with ball bearings inside, to eliminate the torque force which stringing conductors. The product can not be used for connection of pilot ropes, because it can not pass through the bull wheels of puller.

7. Anti twisting braided steel wire rope

Item No.	Nominal diameter		Min. Breaking Load (KN)	Single strand diameter (mm)	Normal T/S (N/mm²)	Net Weight (kg/1000m)
18208A	16	160.00		Φ3.5	1960	800

Anti twisting steel rope is specially braided from high strength, high flexible galvanized steel wire. The braided steel strand has high flexibility, complete stability to rotation under tension force. The wire rope is lubricated for long time usage.

It can homogeneously distribute the pressure between the elementary wires. The special rope can increase efficiency during the overhead transmission line stringing work. The rope is packed in steel drum which can be installed directly on the reel winder of puller.

5.1 Tension stringing method

The tension stringing method is applicable for both transmission and distribution lines, and shall be considered the state of the art of the conductor installation methods.

This method is illustrated in Figures 6a to 6d for distribution lines and Figures 6e to 6m for transmission lines.

Using this method, the conductor is kept under tension during the stringing process to keep the conductor from contacting the Earth surface or other obstacles between towers since this will cause conductor surface damage. The tension in the conductor also allows it to pass over energized circuits, railway or major road crossings, etc. without contacting them.

For multiconductor per phase lines, the tension stringing method requires the installation of a light synthetic or metallic pilot rope into the stringing blocks. This is normally done using the slack stringing stationary reel method by either a towing vehicle or a helicopter or a drone. The pilot rope is used to pull in a heavier pulling rope, and the pulling rope is then used to pull in the conductors.

For single conductor per phase installations, the pulling rope may be installed directly with a towing vehicle or by helicopter eliminating the use of a pilot rope completely.

All the subconductors of each bundle are strung at the same time and with the same tension applied, to avoid difference sag behaviour once installed.

The first and most common method for tension stringing conductors is to use one or more tensioners, depending on the number of subconductors in a bundle, and one puller. This methodology can be named as "1 by n", where 1 means one pulling rope and n means the number of subconductors of the bundle (see Figure 6i).

In case of a large number of subconductors in a bundle, another possible stringing methodology is to provide a pulling rope for each conductor, by using one or more tensioners and one or more pullers. This methodology can be named as "n by n", where the first n means the number of pulling ropes and the second n means number of subconductors in the bundle (see Figure 6j).

Where a transmission line is to be reconductored, often the old conductor is used as a pulling rope to pull in the new conductor, and the puller machine becomes a puller-tensioner machine. This methodology is equivalent to the previous "n by n" method, where the first n means the number of old subconductors used as a pulling rope and the second n means the number of subconductors in the bundle (see Figure 6k).

An alternative method for reconductoring operations, when the mechanical strength of the old conductor is not well predictable, is to use a pulling rope as a tensioning element while recovering the old conductor, in order to keep them suspended from the ground and to minimize the tension value in the old conductor. Then the installed rope can be used as a pilot or pulling rope for the new conductor installation. This methodology can be named as "n by 1" method, where n means the number of old subconductors to be recovered and 1 means one tensioning rope to be used to keep tension in the old conductor bundle.