CN85204226U

CN85204226U - High strength chain-type fixing device

Info

Publication number: CN85204226U
Application number: CN 85204226
Authority: CN
Inventors: 张希华
Original assignee: China Pla Military Representative Office In Shanghai Harbor; Shanghai Maritime Bureau
Current assignee: China Pla Military Representative Office In Shanghai Harbor; Shanghai Maritime Bureau
Priority date: 1985-09-28
Filing date: 1985-09-28
Publication date: 1986-08-20

Abstract

The utility model discloses a high strength chain-typed fixing device, which is composed of a fixer, a ball head hook, a turnbuckle, a shackle, a hook, a chain ring, a steel cable which are connected. The high strength chain-typed fixing device adopts low-charcoal martensitic steel, and adopts the integrated process method of double quenching, once low temperature tempering, strength stretching, and surface shot blasting. Meanwhile, the structure of the high strength chain-typed fixing device is improved. Thus, the utility model has the advantages of high and strong ductility, small size, light weight, wear-resistance, long service life, low cost and flexible operation.

Description

High strength chain-type fixing device

The invention belongs to a kind of improvement that bundlees rigging.

Parcel is disturbed by external force in transit, usually can rock, tilt even turn over, and causes goods and ruins the serious consequence that car and boat damage.Desire keeps the stable of parcel, must be with the binding rigging that sufficient intensity and toughness are arranged that it is fastening.With seagoing vessel loading weight goods is example, and goods bears great active force under wave disturbance, gravity and wind effect.Its horizontal active force is up to 0.9 times of the goods deadweight, and vertically active force can reach 0.3 times that goods is conducted oneself with dignity.With 50 tons the goods of conducting oneself with dignity is example, and its horizontal active force can be up to 45 tons, and vertically active force can reach 15 tons.These active forces must give balance by the tension force that securing device bore.If laterally securing device is four roads, then the tension force of per pass is about 16 tons, and this securing device bears is to draw fatigue load, so it should have high intensity, high toughness is arranged again.

In the prior art, the material that securing device adopted that is used for parcel is without low charcoal steel of hot-cured or low-alloy tempered steel, and does not adopt reinforcement process, so intensity is low, volume is big, and device is heavy, and cost is also high, and function is limited.Especially (as above 20 tons) some element just fails to satisfy requirements when working load is big.The hardness of element own is low, and is easy to wear, and the life-span is short.Spain INTER company, the securing device that Japanese TAiyo company and West Germany CoNVER company make, its Breaking load and fatigue resistance are not very high, and only are suitable for fixedly wide-angle goods, and can not satisfy the needs of multi-state.

The objective of the invention is to provide a kind of improved chain type securing device,, satisfy the parcel transportation and the fastening needs of other tied thing in water route, land route with above-mentioned shortcoming and the deficiency that overcomes prior art.

Invention is achieved in that what whole device was formed by connecting by fixer, bulb hook, turnbuckle, shackle, hook, chain link and steel rope.Wherein the lateral pin screw tip of shackle is opened relief groove, the lateral pin thread segment is all embedded in the shackle body pin, thereby significantly reduce concentrating of stress, improves fatigue resistance.For improving load-carrying capacity, can between fixer housing and base plate, increase support.For reducing total stress, can suitably reduce the curvature of span, minimizing chain link inner width, minimizing hook hook chamber radius and bulb hook in the shackle body pin.For reducing the corresponding site that measure that total stress takes is suitable for turnbuckle equally.

The material of device element adopts low-carbon martensitic steel.For improving fatigue resistance, delay the comprehensive technological method that twice quenching, low tempering, enhanced drawing and a shot blasting on surface have been adopted in crack initiation and expansion.

This device has been owing to structurally done improvement, and adopted low-carbon martensitic steel, adds special PROCESS FOR TREATMENT, make the mechanical characteristicss such as intensity, plasticity and fracture ductility of element obtain optimized matching, so this device has high obdurability, volume is little, and is in light weight.With working load is that 16 tonnes securing device (chain length 2268mm) is an example, and its total weight only has 35.284 kilograms.The element hardness of device is HRC43 ± 2, and wear-resistant, the life-span is long.Compared with prior art, the intensity of this device is their 1.6 times, and element aviation value fatigue life is 1.65 times to 9.05 times of prior art respective element.The price of device reduces by 30% than national standard part.The two ends of device can be done the binding of various ways respectively with goods and set basis, can satisfy the needs of multi-state.So the present invention can be widely used in fastening and other structure fixing of parcel in railway, the road transport, and can be used as the usefulness of lifting accessory, the binding that is suitable for seagoing vessel domestic shipping weight goods is especially fixed.

Below in conjunction with drawings and Examples service condition of the present invention is described.

Figure is the system diagram of chain type securing device.

With reference to figure, the fixer (1) that installs is welded on the set basis (9), set basis (9) can be ship deck or other structure.Between the housing of fixer (1) and base plate (10), increase short support (11), steel rope (7) binding is lived by firmware (8), when regularly by the distance between firmware (8) and the fixer (1), turnbuckle (3) is relax to extreme length, one end of bulb hook (2) links to each other with fixer (1), the other end links to each other with turnbuckle (3), and the body of shackle (4) is connected with turnbuckle (3), and shackle (4) lateral pin is connected with hook (5).The lateral pin thread segment of shackle (4) all embeds in shackle (4) the body pin.To link up with the suitable position that (5) hook chain link (6), rotating screw button (3) makes whole device in tension then, is subjected to tension by firmware (8) and fastened thereby make.Span between the body pin of shackle (4) is 28mm, and the inner width of chain link (6) is two kinds of 24mm and 30mm, and the hook chamber diameter of hook (5) is 45mm, and the radius of curvature of bulb hook (2) is two kinds of 21mm and 53mm.

Claims

1, a kind of high strength chain type securing device that is formed by connecting by fixer (1), bulb hook (2), turnbuckle (3), shackle (4), hook (5), chain link (6), steel rope (7), the lateral pin screw tip that it is characterized in that shackle (4) is opened relief groove, the lateral pin thread segment is all embedded in the body pin of shackle (4).

2,, increase support (11) between the housing that it is characterized in that fixer (1) and the base plate (10) by the described high strength chain type of claim 1 securing device.

3, by claim 1 and 2 described high strength chain type securing devices, the yardstick that it is characterized in that each element is an optimum value.Span between the body pin of wherein shackle (4) is 28mm, and the inner width of chain link (6) is two kinds of 24mm and 30mm, and the hook chamber diameter of hook (5) is 45mm, and the radius of curvature of bulb hook (2) is two kinds of 21mm and 53mm.