Compact Steel Bailey Truss Bridge Adjustable Height Anti Slip Surface

Steel Truss Bailey Bridge/compact Steel Bailey Bridge

Patented technology of truss welding tooling of Jiangsu Zhonghai Bridge Equipment Co., Ltd.

Jiangsu Zhonghai Bridge Equipment Co., Ltd. has obtained a patent called "A truss welding tooling", the authorization announcement number of which is CN 221833700 U, and the application date is January 2024. This patented technology mainly targets the multi-angle flipping problem during the truss welding process, aiming to improve the convenience and quality of welding operations.

Technical background
Traditional truss welding processing usually operates on a single side of the truss. When one side is processed, the truss needs to be lifted and flipped by a crane, and then fixed for welding on the next side. This process is not only time-consuming and labor-intensive, but also inefficient, and it is easy to cause the truss to deflect during welding, affecting the welding quality.

Patented technical content
The patent discloses a truss welding tooling, including the following key components:
- **Base plate**: as the basic support of the entire tooling.
- **Moving seat and fixed seat**: connected to the top of the base plate, used to support and position the truss.
- **Support frame**: connected to the moving seat and the fixed seat, used to support the truss.
- **Positioning mechanism**: used to accurately position the truss to ensure stability during welding.
- **Drive mechanism**: includes motor three and a toothed disc, used to drive the support frame to rotate and realize multi-angle flipping of the truss.
- **Locking mechanism**: includes multiple toothed plates, moving blocks, push-pull plates, rotating discs and motor two, used to lock the toothed disc during welding to prevent the support frame from rotating, thereby avoiding the deflection of the truss.

Technical advantages
- **Multi-angle flipping**: The toothed disc is driven to rotate by motor three, and the rotation of the support frame is driven synchronously to achieve multi-angle flipping of the truss, which is convenient for welding operations.
- **Improve welding quality**: The toothed disc is locked by the locking mechanism during welding to prevent the support frame from rotating, effectively avoiding the deflection of the truss during welding, thereby improving the welding quality.
- **Automation and efficiency improvement**: The tooling realizes the rapid flipping and fixing of the truss through automated control, greatly improving the welding efficiency.

Working Principle
- **Truss positioning**: First, insert the two ends of the truss into the support slots in the support frame, and fix the truss through the electric telescopic rod and L-shaped pressure plate of the positioning mechanism.
- **Angle adjustment**: The three motors drive the toothed disc to rotate, drive the support frame to rotate, and realize the multi-angle adjustment of the truss.
- **Locking and fixing**: During welding, the two motors drive the rotating disc to rotate, and drive the toothed plate to press the toothed disc through the push-pull plate and the moving block to achieve locking and prevent the truss from deflecting.
- **Loosening operation**: After welding is completed, the two motors rotate in the opposite direction, drive the toothed plate to separate from the toothed disc, and realize loosening, which is convenient for taking out the truss.

This patented technology solves the efficiency and quality problems in the traditional truss welding process through innovative tooling design, and provides a more efficient and reliable welding solution for the field of bridge equipment manufacturing.

Specifications:

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CB200 Truss Press Limited Table
NO.	Internal Force	Structure Form
		Not Reinforced Model				Reinforced Model
		SS	DS	TS	QS	SSR	DSR	TSR	QSR
200	Standard Truss Moment(kN.m)	1034.3	2027.2	2978.8	3930.3	2165.4	4244.2	6236.4	8228.6
200	Standard Truss Shear (kN)	222.1	435.3	639.6	843.9	222.1	435.3	639.6	843.9
201	High Bending Truss Moment(kN.m)	1593.2	3122.8	4585.5	6054.3	3335.8	6538.2	9607.1	12676.1
202	High Bending Truss Shear(kN)	348	696	1044	1392	348	696	1044	1392
203	Shear Force of Super High Shear Truss(kN)	509.8	999.2	1468.2	1937.2	509.8	999.2	1468.2	1937.2

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CB200 Table of Geometric Characteristics of Truss Bridge(Half Bridge)
Structure	Geometric Characteristics
	Geometric Characteristics	Chord Area(cm2)	Section Properties(cm3)	Moment of Inertia(cm4)
ss	SS	25.48	5437	580174
	SSR	50.96	10875	1160348
DS	DS	50.96	10875	1160348
	DSR1	76.44	16312	1740522
	DSR2	101.92	21750	2320696
TS	TS	76.44	16312	1740522
	TSR2	127.4	27185	2900870
	TSR3	152.88	32625	3481044
QS	QS	101.92	21750	2320696
	QSR3	178.36	38059	4061218
	QSR4	203.84	43500	4641392

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CB321(100) Truss Press Limited Table
No.	Lnternal Force	Structure Form
		Not Reinforced Model				Reinforced Model
		SS	DS	TS	DDR	SSR	DSR	TSR	DDR
321(100)	Standard Truss Moment(kN.m)	788.2	1576.4	2246.4	3265.4	1687.5	3375	4809.4	6750
321(100)	Standard Truss Shear (kN)	245.2	490.5	698.9	490.5	245.2	490.5	698.9	490.5
321 (100) Table of geometric characteristics of truss bridge(Half bridge)
Type No.	Geometric Characteristics	Structure Form
		Not Reinforced Model				Reinforced Model
		SS	DS	TS	DDR	SSR	DSR	TSR	DDR
321(100)	Section properties(cm3)	3578.5	7157.1	10735.6	14817.9	7699.1	15398.3	23097.4	30641.7
321(100)	Moment of inertia(cm4)	250497.2	500994.4	751491.6	2148588.8	577434.4	1154868.8	1732303.2	4596255.2

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Advantage

Possessing the features of simple structure,
convenient transport, speedy erection
easy disassembling,
heavy loading capacity,
great stability and long fatigue life
being capable of an alternative span, loading capacity