CN221896903U - A hydraulic cylinder with built-in booster - Google Patents

Abstract

A hydraulic cylinder with built-in pressurization is characterized in that one side of a pressurization cylinder body is connected with a hydraulic surface, the other side of the pressurization cylinder body is arranged in a first piston cavity formed by a main cylinder body, the pressurization cylinder body performs sealing in-out movement in the first piston cavity, the other side of the pressurization cylinder body forms a second piston cavity, one side of a pressurization plunger is arranged in the second piston cavity to perform sealing in-out movement, the other side of the pressurization plunger forms a third piston cavity, one side of a quick plunger is arranged in the third piston cavity, and the other side of the quick plunger is arranged in the first piston cavity to perform sealing in-out movement. The advantages are that: the structure is simple, the pressurizing cylinder is arranged in the device, and the pressure can be further increased.

Description

A hydraulic cylinder with built-in booster

Technical Field

The invention relates to a hydraulic cylinder with built-in supercharging.

Background Art

At present, for the hydraulic cylinders used in super-large hydraulic presses at home and abroad (hydraulic thrust> 5000 tons), ultra-high pressure design of more than 45MPa is generally adopted. Ultra-high pressure hydraulic cylinders have the following advantages: 1. Save the weight of raw materials and reduce production costs; 2. Reduce the cylinder diameter size of the hydraulic cylinder for easy machining. At present, the structure of ultra-high pressure hydraulic cylinders at home and abroad is the same as that of ordinary hydraulic cylinders. A separate ultra-high pressure booster is required to boost the pressure inside the ultra-high pressure to reach the ultra-high pressure. Its disadvantages are: it needs to be equipped with an independent booster and hydraulic control system, which has the disadvantages of high cost and complex control system.

The present invention relates to a hydraulic cylinder with built-in booster, which is designed and constructed based on the existing hydraulic cylinder, eliminating the independent booster and hydraulic control system, and has the advantages of simple system structure and reduced cost, and can well solve the above disadvantages.

Summary of the invention

The purpose of the present invention is to solve the shortcomings in the prior art and to propose a hydraulic cylinder with built-in booster.

In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a hydraulic cylinder with built-in boosting, comprising a main cylinder body, a quick plunger, a boosting plunger, a boosting cylinder body and a hydraulic surface, one side of the boosting cylinder body is connected to the hydraulic surface, and the other side of the boosting cylinder body is arranged in a first piston cavity formed by the main cylinder body, the boosting cylinder body performs a sealed in-and-out movement in the first piston cavity, a second piston cavity is formed on the other side of the boosting cylinder body, one side of the boosting plunger is arranged in the second piston cavity for sealed in-and-out movement, a third piston cavity is formed on the other side of the boosting plunger, one side of the quick plunger is arranged in the third piston cavity, and the other side of the quick plunger is arranged in the first piston cavity for sealed in-and-out movement.

Furthermore, one side of the third piston chamber is connected to the second piston chamber through a quick plunger oil hole, and a quick plunger seat is provided on the other side of the third piston chamber, and the center of the quick plunger seat is slidingly and sealingly connected to the quick plunger.

Furthermore, a groove for positioning the other side of the fast plunger is provided on the bottom surface of the first piston cavity.

Furthermore, a booster plunger seat is provided on the other side of the second piston chamber, the center of the booster plunger seat is slidingly and sealingly connected to the booster plunger, and a plunger return chamber is provided between the booster plunger seat and the second outer protrusion on one side of the booster plunger.

Furthermore, a booster cylinder seat is provided on the other side of the first piston chamber, the center of the booster cylinder seat is slidingly and sealingly connected to the booster cylinder, and a main cylinder return chamber is provided between the booster cylinder seat and the first outer protrusion on one side of the booster cylinder.

Furthermore, a main cylinder filling hole and a main cylinder oil inlet are provided in the first piston cavity.

Furthermore, a main cylinder oil return hole is also provided in the first piston cavity, and the main cylinder oil return hole is connected to the main cylinder return cavity.

Furthermore, the boosting cylinder is provided with a boosting cylinder oil inlet hole, and the boosting cylinder oil inlet hole is connected to the second piston chamber.

Furthermore, the boost cylinder is also provided with a boost cylinder oil return hole, and the boost cylinder oil return hole is connected to the plunger return chamber.

Furthermore, the second outer protrusion on one side of the boosting plunger is slidably sealed with the second piston cavity wall, and the first outer protrusion on one side of the boosting cylinder is slidably sealed with the first piston cavity wall.

The beneficial effects of the present invention are: the built-in boosting cylinder can further increase the pressure, and the independent booster and hydraulic control system are eliminated, the system structure is simple, the cost is low, and the control system is simple.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural schematic diagram of the invention.

FIG. 2 is a second structural diagram of the invention.

FIG. 3 is a structural schematic diagram of the third invention.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings 1-3 in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

Embodiment 1 refers to Figures 1-3, a hydraulic cylinder with built-in boosting includes a main cylinder body 1, a fast plunger 4, a boosting plunger 3, a boosting cylinder body 2 and a hydraulic surface 12, one side of the boosting cylinder body is connected to the hydraulic surface, and the other side of the boosting cylinder body is arranged in a first piston chamber 11 formed by the main cylinder body, the boosting cylinder body performs a sealed in and out movement in the first piston chamber, and a second piston chamber 21 is formed on the other side of the boosting cylinder body, one side of the boosting plunger is arranged in the second piston chamber for sealed in and out movement, and a third piston chamber 31 is formed on the other side of the boosting plunger, one side of the fast plunger is arranged in the third piston chamber, and the other side of the fast plunger is arranged in the first piston chamber for sealed in and out movement.

A hydraulic cylinder with built-in booster, one side of the third piston chamber is connected to the second piston chamber through a fast plunger oil hole 10, the other side of the third piston chamber is provided with a fast plunger seat, the center of the fast plunger seat 16 is connected to the fast plunger in a sliding and sealing manner.

A hydraulic cylinder with built-in booster, wherein the bottom surface of the first piston cavity is provided with a groove 13 for positioning the other side of the fast plunger.

A hydraulic cylinder with built-in boosting, a boosting plunger seat 17 is provided on the other side of the second piston chamber, the center of the boosting plunger seat is slidingly and sealingly connected to the boosting plunger, and a plunger return chamber 14 is provided between the boosting plunger seat and a second outer protrusion 20 on one side of the boosting plunger.

A hydraulic cylinder with built-in boosting, a boosting cylinder seat 18 is provided on the other side of the first piston chamber, the center of the boosting cylinder seat is slidingly and sealingly connected to the boosting cylinder, and a main cylinder return chamber 15 is provided between the boosting cylinder seat and the first outer protrusion 19 on one side of the boosting cylinder.

A hydraulic cylinder with built-in booster, wherein a main cylinder body liquid filling hole 5 and a main cylinder body oil inlet 6 are arranged in a first piston chamber.

A hydraulic cylinder with built-in booster, a main cylinder oil return hole 7 is also arranged in the first piston cavity, and the main cylinder oil return hole is connected to the main cylinder return cavity.

A hydraulic cylinder with built-in boosting is provided with a boosting cylinder oil inlet hole 8, which is connected to a second piston chamber.

A hydraulic cylinder with built-in boosting is provided with a boosting cylinder oil return hole 9, which is connected to a plunger return cavity.

A hydraulic cylinder with built-in booster, a second outer protrusion on one side of the booster plunger is slidably sealed with a second piston cavity wall, and a first outer protrusion on one side of the booster cylinder is slidably sealed with a first piston cavity wall.

A hydraulic cylinder with built-in booster, hydraulic cylinder fast push out and medium speed working state:

The hydraulic oil enters the second piston chamber of the booster cylinder through the booster cylinder oil inlet hole 8, and then pushes the fast plunger and the booster cylinder body out through the fast plunger oil hole 10. Because the booster cylinder plunger has a larger ring area than the fast plunger, the fast plunger cannot push out the booster cylinder plunger under the same pressure;

When pushed out quickly, the main cylinder body sucks hydraulic oil through the main cylinder body filling hole 5 at a large flow rate;

After the rapid push stops, the medium-speed push is resumed. The hydraulic oil enters the main cylinder through the oil inlet hole 6 of the main cylinder. The rapid plunger will return to the bottom under the pressure of the main cylinder. The medium-speed push action will stop after the hydraulic thrust reaches 25MPA.

A hydraulic cylinder with built-in booster, hydraulic cylinder booster working and full reset state:

After medium speed or rapid stop, the hydraulic oil enters the booster cylinder through the booster cylinder oil inlet hole 8, and the booster cylinder plunger is pushed out. Because the booster cylinder inner diameter and the booster cylinder plunger ring area are 1.8 times, when the booster cylinder pressure reaches 25MPA, the pressure of the plunger pushing into the main cylinder body is 45MPA;

The action is reset, the hydraulic oil enters the plunger return chamber through the booster cylinder oil return hole 9, the plunger return chamber pushes the booster cylinder plunger back, the booster cylinder stops after it is back to the position, the hydraulic oil enters the master cylinder return chamber through the master cylinder oil return hole 7, and retreats to the master cylinder back to the position, the hydraulic oil in the master cylinder rear chamber quickly returns through the filling hole 5, and the master cylinder stops after it is reset.

The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims (10)

1. The utility model provides a built-in pressure boost pneumatic cylinder, includes main cylinder body, quick plunger, pressure boost cylinder body and hydraulic pressure face, its characterized in that: the hydraulic surface is connected to pressure boost cylinder body one side, and pressure boost cylinder body opposite side sets up in the first piston chamber that the main cylinder body formed, and pressure boost cylinder body is sealed business turn over in first piston chamber, and pressure boost cylinder body opposite side forms the second piston chamber, and pressure boost plunger one side sets up and is sealed business turn over in the second piston chamber, and pressure boost plunger opposite side forms the third piston chamber, and quick plunger one side sets up in the third piston chamber, and quick plunger opposite side sets up in first piston chamber, is sealed business turn over.

2. A hydraulic cylinder with built-in boost according to claim 1, wherein: one side of the third piston cavity is communicated with the second piston cavity through a quick plunger oil hole, a quick plunger seat is arranged on the other side of the third piston cavity, and the center of the quick plunger seat is in sliding sealing connection with the quick plunger.

3. A built-in pressurized hydraulic cylinder according to claim 2, wherein: the bottom surface in the first piston cavity is provided with a groove for positioning the other side of the quick plunger.

4. A hydraulic cylinder with built-in supercharging according to claim 3, characterized in that: the other side of the second piston cavity is provided with a pressurizing plunger seat, the center of the pressurizing plunger seat is connected with the pressurizing plunger in a sliding sealing way, and a plunger return cavity is arranged between the pressurizing plunger seat and a second outer bulge on one side of the pressurizing plunger.

5. The internal pressurized hydraulic cylinder of claim 4, wherein: the other side of the first piston cavity is provided with a booster cylinder seat, the center of the booster cylinder seat is in sliding sealing connection with the booster cylinder, and a master cylinder return cavity is arranged between the booster cylinder seat and the first outer bulge on one side of the booster cylinder.

6. The internal pressurized hydraulic cylinder of claim 5, wherein: a main cylinder body liquid filling hole and a main cylinder body oil inlet are arranged in the first piston cavity.

7. The internal pressurized hydraulic cylinder of claim 5, wherein: and a main cylinder oil return hole is also arranged in the first piston cavity and is connected with the main cylinder return cavity.

8. The internal pressurized hydraulic cylinder of claim 5, wherein: the booster cylinder is provided with a booster cylinder oil inlet hole which is communicated with the second piston cavity.

9. The internal pressurized hydraulic cylinder of claim 5, wherein: and a booster cylinder oil return hole is also formed in the booster cylinder, and the booster cylinder oil return hole is connected with the plunger return cavity.

10. The internal pressurized hydraulic cylinder of claim 5, wherein: the second outer bulge on one side of the pressurizing plunger is in sliding seal with the second piston cavity wall, and the first outer bulge on one side of the pressurizing cylinder is in sliding seal with the first piston cavity wall.