Product Description
Double acting hollow hydraulic cylinder is connected with all the design features of single acting hydraulic cylinder and the design superiority of a double-acting hydraulic cylinder, increases its operation and working speed, especially, since it can make the best of its hydraulic force in the long-stroke engineering.
This type of hydraulic cylinder has a central piston, it is widely used for nuclear power plants, tunnel engineering, foundation, and other similar projects. And it can be connected with prestressed craft, it is also used for post-tension prestressed bridge projects.
Technical Parameter
| Model specifications |
Nominal tensile force (KN) |
Nominal oil pressure (Mpa) |
Through-hole diameter (mm) |
Install limit plate aperture (mm) |
Mounting tool (mm) |
Outside diameter size (mm)
Diameter * Height |
| YDC650 |
650 |
48 |
72 |
99 |
95 |
200*385 |
| YDC1000 |
1000 |
50 |
78 |
111 |
111 |
230*385 |
| YDC1500 |
1500 |
52 |
94 |
150 |
150 |
270*390 |
| YDC2000 |
2000 |
53 |
118 |
177 |
177 |
320*400 |
| YDC2500 |
2500 |
52 |
128 |
210 |
185 |
345*400 |
| YDC3000 |
3000 |
52 |
135 |
190 |
185 |
370*400 |
| YDC3500 |
3500 |
51 |
160 |
232 |
232 |
420*400 |
| YDC4000 |
4000 |
52 |
165 |
252 |
252 |
450*410 |
| YDC5000 |
5000 |
52 |
196 |
260 |
265 |
500*410 |
| YDC6500 |
6500 |
53 |
220 |
295 |
235 |
580*420 |
| YDC10000 |
10000 |
50 |
270 |
440 |
415 |
740*570 |
Products Details
Applications
Our hydraulic cylinders have been widely used in industrial fields, such as steel plants, the cement industry, chemical and refineries, bridges, railways, highways, hydropower stations, ship repair, building, construction, and maintenance.
Features
The structure of the through-core jack is relatively simple, consisting of an upper cover plate, a folding ejector rod, a spring, a movable handle, a tie rod, a pressure plate, and a metal gasket. Compared with ordinary jacks, its main feature is that the ejector rod can slide in both directions. This is because there is a special threaded hole on the ejector rod that can be connected to the pull rod, making it easy to move the ejector rod upward or downward.
A. It is very durable to use.
B. Easy to operate and control.
C. It can be used for lifting heavy machines, bridge projects, hydraulic engineering, harbor construction, and other equipment.
D. It has a large output, lightweight, and remote control.
E. It can match our high-pressure oil pump.
F. It can reach jack, push, pull, and extrusion kinds of working.
Working Principle
The through-core jack is a double-acting jack that uses dual hydraulic cylinders to tension prestressed tendons and press anchors. Through-the-core jacks are suitable for tensioning belts
Its working principle is: when tensioning the prestressed tendons, the oil nozzle of the tensioning cylinder enters and the oil nozzle of the pressing cylinder returns oil. The pressing cylinder, connecting sleeve, and support sleeve are integrated into one and move to the right to resist the anchor ring; the tensioning cylinder, end The cover nut and plug are integrated with the core sleeve to drive the tool anchor to the left to stretch the prestressed tendon; when pressing the anchor, under the condition of keeping the tension stable, oil is fed into the oil nozzle of the pressing cylinder, and the piston and protective sleeve are pressed It is integrated with the jacking head and moves to the right to force the clip into the anchor ring; at this time, the oil nozzle of the tensioning cylinder returns oil, the oil nozzle of the jacking cylinder feeds oil, and the tensioning cylinder hydraulic returns. Finally, the oil nozzles of the tensioning cylinder and the pressing cylinder return oil at the same time, and the pressing piston returns to its original position under the action of the spring force.
For large-span structures and long steel wire bundles with large extensions, it is appropriate to use through-type jacks.
Packing & Shipping
Our Company
Our company was established in 2019 and is a professional company specializing in equipment products. We focus on providing high-quality equipment to customers from all walks of life and are committed to promoting the progress and development of industrial production through technological innovation and product optimization.
Since our establishment, we have always adhered to the customer-centered approach, constantly deepening our understanding of market needs, and continuously improving and optimizing our products based on customer feedback and opinions. Our equipment is widely used in construction, transportation, energy, environmental protection, and other fields, and is highly praised and trusted by customers.
Our team is composed of a group of professionals in the equipment field. They not only have rich technical knowledge and industry experience but also always maintain an innovative and enterprising spirit to provide strong support for the company's continued development.
We have achieved several major achievements and honors with our excellent product quality and service levels. At the same time, we have also accumulated rich experience and resources, laying a solid foundation for future development.
Facing the future, we will continue to adhere to technological innovation and product optimization, and continuously improve product quality and service levels to meet the evolving needs of customers. At the same time, we will also actively expand the market, seek more cooperation opportunities, and work hand in hand with more customers to create a better future.
Certification
Our team
Working Principle
The through-core jack is a double-acting jack that uses dual hydraulic cylinders to tension prestressed tendons and press anchors. Through-the-core jacks are suitable for tensioning belts
Its working principle is: when tensioning the prestressed tendons, the oil nozzle of the tensioning cylinder enters and the oil nozzle of the pressing cylinder returns oil. The pressing cylinder, connecting sleeve, and support sleeve are integrated into one and move to the right to resist the anchor ring; the tensioning cylinder, end The cover nut and plug are integrated with the core sleeve to drive the tool anchor to the left to stretch the prestressed tendon; when pressing the anchor, under the condition of keeping the tension stable, oil is fed into the oil nozzle of the pressing cylinder, and the piston and protective sleeve are pressed It is integrated with the jacking head and moves to the right to force the clip into the anchor ring; at this time, the oil nozzle of the tensioning cylinder returns oil, the oil nozzle of the jacking cylinder feeds oil, and the tensioning cylinder hydraulic returns. Finally, the oil nozzles of the tensioning cylinder and the pressing cylinder return oil at the same time, and the pressing piston returns to its original position under the action of the spring force.
For large-span structures and long steel wire bundles with large extensions, it is appropriate to use through-type jacks.
How to Use
1. Preparation work:
First of all, you should understand the tension requirements for prestressed bundles in engineering design, such as the number of steel strands in each bundle, standard strength, cross-sectional area value, control stress δk, required tensile elongation value, and retraction of anchors value, etc., and then determine the oil pressure value at δk based on the "oil pressure value-output force" calibration value.
2. Installation of jacks and anchors
(1) Pass the steel strand into the reserved corridor of the structure. The exposed length of the steel wire bundle at the tension end is required to be 200-250mm longer than the working length of the jack. The steel strand must be cut with a sheet grinder and must not have loose ends or "hair" to avoid difficulty in perforation.
(2) Put the end of the steel wire bundle on the working anchor plate, push it to the anchor pad, and align it with the notch to fix it.
(3) Install the working anchor clips: Before installing the clips, use a steel ring to hoop each clip together, then push it into the tapered hole of the anchor plate along the steel strand, and push it by hand until it stops. .
(4) Install the limit plate: The limit plate is designed according to the working anchor plate and matches the holes of the anchor plate.
(5) Install the jack: first tie the ends of the steel strand wire harness with wire pins, then hoist the jack and put it on the steel beam, and put the support opening of the front end cover of the jack outside the limit plate. The jack can now be aligned coaxially.
(6) Install the tool anchor on the support stop at the end of the piston.
FAQ
1. Are you a manufacturer?
Yes. We are one of the leading manufacturers
2. Do you have Stock productions to sell?
Yes, of course. But we also offer OEM service. Please send us some drawings.
3. What information do you want to know if I want to get a quotation?
a). The model/size of your products.
b). The application for your products.
c). Special package methods if you need them.
d). Raw material.
4. Do you inspect the finished products?
Yes. Each step of products will be carried out inspection by the QC department until shipping
5. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
6. what can you buy from us?
Engineering & Construction Machinery, Metal forming equipment, agricultural machinery, Garden machinery, construction machinery
7. why should you buy from us not from other suppliers?
The company is mainly in industrial processing and manufacturing. It is an entity factory integrating R & D, production, and sales. It has 12 years of design and R & D experience and currently has 15 R & D engineers.
Why Choose Us
1. 24-hour online service, support in Chinese, English, Spanish, French, German, and Russian, and technical guidance.
2. When meets machine failure problem, our factory will ensure that the problem is solved within 1 hour.
3. Provide machine install video.
4. Provide logistics information, like shipping by sea, shipping by express DHL, FEDEX delivery, and real-time tracking service.
5. If the machine is broken to non-human causes, the new machine will be provided or new parts will be provided.
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