Product Characteristics

• 1. Reliable Two-way Self-locking Ability
  Firstly, the locking function of the joint of horizontal pole and vertical pole is mainly achieved and ensured by its design structure, which minimizes the safe hazard by reducing operators' work in locking scaffolds.
  
  Secondly, unlike traditional scaffold that several horizontal and vertical poles shares one interlock at a node, ZSDJ Two-way Self-locking Scaffold applies to independent and non-interfering locking. In the circumstance that one pole loosens, other poles will still work. It solves the problems of unreasonable stress of horizontal pole and makes the steel pipe mechanical strength to an extreme. Meanwhile, it makes earlier disassembling safer and more reliable.
  
  
• 2. No Flexible Parts
  ZSDJ Directly-inserting Two-way Self-locking Multi-functional Steel Pipe Scaffold consists of vertical poles and horizontal poles only. These two kinds of poles are fully manufactured in Yeda factory. The advantages of no flexible parts are: first, no parts losing and damage problem, thus reduces possible economic lost; second, no flexible locking parts avoid hidden safe hazard caused by flexible locking parts of traditional scaffold.
  
  
• 3. Convenient and Fast
  In using ZSDJ Directly-inserting Two-way Self-locking Multi-functional Steel Pipe Scaffold, the only thing need to do is to insert two plugs of horizontal poles into relevant rotary of a vertical pole and tap it. The assembly and disassembly speed of the ZSDJ scaffold dwarfs that of a traditional scaffold. The erection speed difference between ZSDJ scaffold and fastener steel pipe scaffold could be 10 times, while cup lock scaffold 6 times.
  
  
• 4. Reasonable Load Nature
  Thanks to the two-way self-locking function, the cross point of the vertical and horizontal poles of ZSDJ Directly-inserting Two-way Self-locking Multi-functional Steel Pipe Scaffold have a high precision and reasonable load nature. The scaffold features great carrying capacity, stiffness and stability. The supporting value of each vertical pole reaches to 3-4 tons. Also, less diagonal poles are needed in this new-type scaffold comparing to traditional scaffold.
  
  
• 5. Two-way Self-locking, Free Adjustment
  ZSDJ Directly-inserting Two-way Self-locking Multi-functional Steel Pipe Scaffold can match with adjustable base jack & head jack, adjustable advance disassembly equipment, cantilever beam, overhanging frame, etc. to realize multi-function. First, able to be erected on any uneven slope and stepped foundation; second, able to support stepped template and make early disassembly possible; third, disassemble partial support frame in advance, can be used to erect passage and overhang eave and wing; fourth, able to assort with erecting jungle gym, movable work platform, external bent frame, etc. to realize multi support functions; fifth, can act as storage holder, and use for erecting various kinds of stages, AD engineering scaffold, etc. The upright pole can be extended in multiples of 600mm and realizes back-head joint function. ZSDJ Directly-inserting Two-way Self-locking Multi-functional Steel Pipe Scaffold provides technical support for using large-scale standard templates and hanging, erecting & fixing new-type templates.
  
  
• 6. Standardized Product Packing
  Horizontal and vertical poles in various specification of ZSDJ Directly-inserting Two-way Self-locking Multi-functional Steel Pipe Scaffold adopts standardized packing, which provide convenience to scaffold storage, loading & unloading, transportation, maintenance and repair.
  
  Yeda have made strict enterprise standard, production process, inspection process, using instruction, product manual, etc. and provide technical support to our clients, with a purpose of the renovation of support system in construction industry.

Mechanical Property and Design Load
The node of ZSDJ Directly-inserting Two-way Self-locking Multi-functional Steel Pipe Scaffold consists of a ZSDJ rotary, ZSDJ plug, and outside circle of welded pipe.

Vertical pole is a pipe with a ZSDJ rotary welded for every 600mm and a sleeve welded at the end on basis of special technical standard; while horizontal pole is made by a welded pipe with one ZSDJ plugs at both ends of the pipe.

Setting up: Insert the ZSDJ plugs at each end of the horizontal pole into the relevant taper slot on vertical pole, and then hammer the plug to fasten it. Each ZSDJ rotary can horizontally connect with four ZSDJ horizontal poles. Vertical pole can be extended when insert it into the sleeve of another one. 

All Kinds of Adjustable Base Jack and Head Jacks of Steel Pipe Scaffolds
They are applicable for all kinds of steel pipe scaffold such as Frame System Steel Pipe Scaffold, Heavy Ladder Type Steel Pipe Scaffold, Fastener-type Steel Pipe Scaffold, Cup-lock Steel Pipe Scaffold, etc.C

Specifications suitable for the use of Frame-system Scaffold: Φ34x400, Φ34x600, Φ34x780.

Product Pic	Product Name	Type	Specification
	Adjustable Screw Rod	TQ-50	38x500
		TQ-60	38x600
		TQ-78	38x780
	Double-way Adjustable Screw Rod	ZQ-50	38x500
		ZQ-60	38x600
		ZQ-78	38x780
	Early-disassembling Regulating Screw Rod	EQ-50	38x500
		EQ-60	38x600
		EQ-78	38x780
	Adjustable Base Jack	DQ-40	38x400
		DQ-50	38x500
		DQ-60	38x600
		DQ-78	38x780
	Adjustable Head Jack	UQ-40	38x400
		UQ-50	38x500
		UQ-60	38x600
		UQ-78	38x780

Attentions in Using ZSDJ

• 1. Erection should be carried out in accordance with the principle of from low to high in vertical, and in turn in horizontal; disassembly should be implemented in accordance with the principle of from high to low in vertical and in turn in horizontal.
  
  
• 2. Requirement of this scaffold on ground is the same as that of other scaffolds. Please use adjustable base jack when the ground is rough. Do horizontal adjustments after the erection of the horizontal and vertical poles of first and second layer is finished: make sure that the horizontal poles at the same layer on the same plane while upright poles arranged in line before continue erecting.
  
  
• 3. Dead weight should not be considered and calculated into load until the height of the scaffold excess 10m. To ensure the overall strength and stability of scaffold, the extension joint of upright poles should not at a same horizontal plane. It is necessary to set enough bottom transom and relevant large amount of diagonal poles if the scaffold height excess 15m under the circumstance that the foundation is in normal condition (in special situation: when the foundation strength is inconsistent and the projected area is too small, bottom transom and diagonal poles should be erected even the scaffold height is less than 15m). During the setting up process of external scaffold, double frames should be erected, and wall connecting poles and bottom transom should be erected when the scaffold height excess 8m.
  
  
• 4. When this scaffold is used independently in open air, the height envelop of the project is 8m in using 1 unit while 12m in using 2units. And it's essential to set wall connecting poles and diagonal bracing. Stable wind cables are preferred when necessary.
  
  
• 5. This scaffold can conveniently mix with cup-lock scaffold, ring-lock scaffold: use a transition pole at the joint of two different kinds of scaffolds in horizontal direction; insert and connect two upright poles in vertical direction.
  
  
• 6. Prohibit throwing components and accessories of scaffold from high places in transportation, storage and using and falling or hitting it heavily. Need clean and damage inspection after using. Prevent corrosion when stored and repaint it if necessary.

Schematic Diagram on ZSDJ Two-way Self-locking Scaffold Erection