Single Rope Grab Bucket
OEM and ODM accept
Rated lifting capacity: 5.0T-80T
Density: 0.8t/m3-3.0t/m3
Single rope grab bucket is a kind of efficient lifting and unloading equipment which controls the opening and closing of the grab by a single rope, mainly composed of grab body, wire rope and so on. The grapple is directly hung under the hook of single reel crane, which is an effective tool for loading and unloading coal, coke, ore, nickel ore, yellow sand, grain, fertilizer, alumina, sulfur and other small granular bulk cargoes in various extreme and harsh environments.
Features:
The opening and closing mechanical structure of the grab is simple and novel, easy to operate, easy to maintain, low cost and few failures. The two wire ropes of the grab can be used by connecting with the wire ropes on the crane respectively, which is suitable for the crane with one hoisting drum.
Categorization
1. According to the number of buckets, single rope grab can be divided into single rope clam shell grab bucket and single rope orange peel grab bucket;
2. According to the way of controlling the opening and closing of the grab, the single rope clamshell grab bucket is divided into single rope touch open bulk grab bucket, hand dumping (opening) clamshell grab bucket, wireless remote control grab bucket and so on.
Principle of operation of single rope grapple:
The single rope grab is connected to the crane by a wire rope.
1. When the crane lifts the wire rope upward, the grapple is open by its own gravity.
2. When the grapple descends to the top of the material to be grabbed, the wire rope continues to be lowered, and the grapple is inserted into the material under the effect of gravity.
3. The wire rope is lifted upward by the crane operation, and the tension of the wire rope will be transformed into the force to close the grapple through the mechanical structure of the pulley set inside the grapple.
4. The two or more flaps of the grapple will gradually close and hold the material tightly.
5. When the material is lifted to the specified position, the wire rope is lowered again, and the grapple opens again under the pressure of gravity and material, and the material is discharged.
Design drawings
We can design different bucket grabs and grab bucket parts according to different needs, such as grab bucket for excavator.
Overall design
Bucket body design and selection for double clamshell grab
Pos A standard design Pos B with spill plates Pos C with kick plates Pos D with dust protection cover
Clamshell grab bucket lip design and selection
Main technical parameters
Material density: 0.9 (t/m3) Multiplication rate of cable: 3
| SWL(t) |
7.5 |
10 |
10 |
12.5 |
15 |
20 |
25 |
32 |
40 |
| Grab volume (30° Dome) (m3) |
4.4 |
6.5 |
7 |
9.4 |
9 |
12.5 |
15 |
20 |
25 |
| Sheave diamater Φ (mm) |
445 |
445 |
445 |
445 |
560 |
650 |
720 |
800 |
840 |
| Specs Diameter of steel rope Φ (mm) |
21.5 |
24 |
21.5 |
26 |
28 |
32 |
36.5 |
40 |
43 |
| Parameter (mm) |
A |
3100 |
4160 |
3710 |
3858 |
4586 |
5400 |
6100 |
6700 |
7600 |
| B |
5000 |
5450 |
4835 |
4785 |
6450 |
6500 |
7000 |
7500 |
8500 |
| C |
2800 |
3000 |
2700 |
2600 |
3350 |
3450 |
3600 |
3850 |
4400 |
| D |
3500 |
3680 |
3158 |
3532 |
4280 |
4400 |
4700 |
5100 |
5800 |
| E |
2200 |
2200 |
2360 |
3000 |
3000 |
2800 |
3000 |
3550 |
3700 |
| Opening & Closing up Miles (mm) |
1800 |
2156 |
2050 |
1650 |
200 |
2300 |
2350 |
2410 |
2750 |
| Dead weight (t) |
3.5 |
4 |
4.3 |
5.8 |
6.5 |
8.8 |
11 |
14 |
17.5 |
| High in use (m) |
9.5 |
10.5 |
10.5 |
11.5 |
12.5 |
13 |
14 |
15 |
16 |
| Remark |
|
|
|
|
|
|
|
|
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Note: The parameters in the table are for reference only, we can customize as needed and accept non-standard.
Non-standard products
Important
It is important to understand the intended application of the grapple you need. Below is a list of general topics we will discuss in order to accurately manufacture a marine grab to your specifications.
* What do you intend to lift with the grab?
* What is the bucket capacity you need?
* What is the power of the motor you want?
* What is the specific gravity of the material you expect?
* What type of grab are you interested in?
* What are your environmental conditions? For example, temperature, humidity, etc.
* What kind of control device do you need?
* What is your preference for the drive system, electric or diesel hydraulic?
* Do you want a single rope, double rope, or quadruple rope, or other?
* What is your preferred number of bucket flaps?
FAQ
Q1: What's the information should I provide when inquiry?
A: Thanks for your question. The more information you provide, the more accurate solution we can prepare for you! The information such as the lift capacity, span, lift height, power source or other specials you give us will be more appreciated.
Q2: Is your products customized?
A: Yes, because of the different working condition, all our products are customized depending on detail requirement! So if you give us more information about the lift capacity, span, lift height, power source and other specials, we will give you a very quick quote!
Q3: How can we install the grab?
A: Our senior engineer can be your side to provide the installation guide service and training.
Q4: Can you provide the serious lifting tools?
A: Sure, we can provide any lift tools such as lift sling belt, lift clamp, grab, magnet or other specials as your requirement!
Q5: How about your payment terms?
A: we accept T/T and L/C at sight.
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