CN210949351U

CN210949351U - Quick hydraulic cylinder

Info

Publication number: CN210949351U
Application number: CN201921888359.1U
Authority: CN
Inventors: 陈磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-07-07
Anticipated expiration: 2029-11-04

Abstract

The utility model discloses a quick pneumatic cylinder. The utility model provides a pair of quick pneumatic cylinder, include: the device comprises a cylinder body, a main piston rod, a guide sleeve, a quick piston rod, a piston and a sealing bottom; when the hydraulic cylinder works, hydraulic oil can enter the oil inlet of the quick piston rod through the external hydraulic station, the sectional area of the inner cavity of the quick piston rod is small, the main piston rod can be pushed out quickly under the condition of certain oil quantity, the oil quantity is far 2-3 times faster than that of the main piston rod pushed by the oil inlet of the upper cavity, the speed obtained according to the different proportions of the sectional areas can be different, in addition, when the main piston rod runs quickly, because the upper cavity is a sealed space, the one-way valve core of the one-way liquid filling valve is opened by generating vacuum, the hydraulic oil in the liquid filling box is sucked back into the upper cavity of the piston quickly, and conditions are.

Description

Quick hydraulic cylinder

Technical Field

The utility model relates to a pneumatic cylinder technical field, concretely relates to quick pneumatic cylinder.

Background

The hydraulic cylinder is a hydraulic execution element for converting hydraulic energy into mechanical energy, has a simple structure, works reliably and moves stably, and is widely applied to hydraulic systems of various machines. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between the two sides of the effective area, and the hydraulic cylinder basically comprises a cylinder barrel, a cylinder cover, the piston, a piston rod, a sealing device, a buffering device and an exhaust device.

How to accelerate the feeding speed of the hydraulic cylinder and further improve the working efficiency of the press is a problem of attention of people. The conventional method for increasing the speed of the hydraulic cylinder is to increase the oil inlet amount of the hydraulic cylinder in a limited manner, for example, the output flow of a hydraulic pump is increased and the motor power is increased to increase the oil inlet amount of the hydraulic cylinder, so that the feeding speed of the hydraulic cylinder is increased.

Therefore, how to design a quick hydraulic cylinder capable of realizing quick feeding and saving cost and power consumption simultaneously becomes a problem to be solved urgently in the industry.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a quick pneumatic cylinder to solve current pneumatic cylinder and can't be when realizing fast feed, save the problem of cost and consumption.

The utility model provides a quick pneumatic cylinder, include: the device comprises a cylinder body, a main piston rod, a guide sleeve, a quick piston rod, a piston and a sealing bottom; the guide sleeve is arranged at one end inside the cylinder body, and the sealing bottom is arranged at the other end inside the cylinder body; the main piston rod is arranged in the cylinder body, a piston is arranged at one end of the main piston rod, which is positioned in the cylinder body, the piston is contacted with the inner wall of the cylinder body, the other end of the main piston rod extends into the guide sleeve and is contacted with the inner wall of the guide sleeve, an upper cavity oil inlet is formed in the area, between the piston and the sealing bottom, of the outer wall of the cylinder body, and a lower cavity oil inlet is formed in the area, between the piston and the guide sleeve, of the outer wall of the cylinder body;

a quick piston rod accommodating cavity is arranged at one end, close to the sealing bottom, in the main piston rod, one end of the quick piston rod is fixed on the sealing bottom, and the other end of the quick piston rod extends into the quick piston rod accommodating cavity; the quick piston rod is characterized in that a quick piston rod inner cavity is formed in the quick piston rod, a quick piston rod oil inlet is formed in the end portion, fixed at one end of the sealing bottom, of the quick piston rod, one end of the quick piston rod inner cavity is communicated with the quick piston rod oil inlet, and the other end of the quick piston rod inner cavity is communicated with the quick piston rod accommodating cavity.

Optionally, a compression ring is further disposed on the main piston rod, and the compression ring is located on one side of the piston and used for compressing the piston.

Optionally, a liquid filling port is further formed in the area, between the piston and the sealing bottom, of the outer wall of the cylinder body, a liquid filling tank is arranged on one side of the cylinder body, hydraulic oil is contained in the liquid filling tank, and the liquid filling tank is connected with the liquid filling port through a liquid filling pipeline.

Optionally, a one-way liquid filling valve is arranged on the liquid filling pipeline.

Optionally, a through hole is formed in the sealing bottom, the quick piston rod penetrates through the through hole and extends into the quick piston rod accommodating cavity, and one end, located on the outer side of the sealing bottom, of the quick piston rod is fixed to the sealing bottom through a screw.

Optionally, the cylinder body and the main piston rod are made of 45 # steel.

The utility model discloses following beneficial effect has:

the utility model provides a quick hydraulic cylinder, through setting up quick piston rod holding cavity in the main piston rod at the end near the sealing bottom, one end of quick piston rod is fixed on the sealing bottom, the other end of quick piston rod stretches into the quick piston rod holding cavity, and be provided with quick piston rod inner chamber in the quick piston rod, the end of the quick piston rod fixed on the sealing bottom is provided with quick piston rod oil inlet, one end of quick piston rod inner chamber is communicated with quick piston rod oil inlet, the other end of quick piston rod inner chamber is communicated with quick piston rod holding cavity, when the pneumatic cylinder is in operation, hydraulic oil can enter quick piston rod oil inlet through external hydraulic station, because the quick piston rod inner chamber has a small cross-sectional area, can push out the main piston rod fast under certain circumstances, far more than promote the main piston rod from the upper chamber oil inlet 2-3 times faster, in addition, when the main piston rod runs fast, because the upper cavity is a sealed space, vacuum is generated to open the one-way valve core of the one-way liquid filling valve, hydraulic oil in the liquid filling box is sucked back into the upper cavity of the piston fast, and conditions are provided for fast pressurization.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is the utility model provides a structural schematic diagram of a quick hydraulic cylinder.

Fig. 2 is the utility model provides a pair of quick pneumatic cylinder's uide bushing structure sketch map.

Fig. 3 is the utility model provides a pair of clamp ring structural schematic of quick pneumatic cylinder.

Illustration of the drawings: 1-a cylinder body; 2-a main piston rod; 3, a guide sleeve; 4-a quick piston rod; 5-a piston; 10-sealing the bottom; 5-a piston; 11-an oil inlet of the upper cavity; 12-a lower cavity oil inlet; 21-a rapid piston rod accommodating cavity; 40-quick piston rod inner cavity; 41-quick piston rod oil inlet; 9-a pressing ring; 13-a liquid filling port; 7-liquid filling tank; 8-hydraulic oil; 6-one-way liquid filling valve; 101-a through hole; 102-screws.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, the thicknesses of layers and regions are exaggerated for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1 to 3, an embodiment of the present invention provides a fast hydraulic cylinder, including: the cylinder body 1, the main piston rod 2, the guide sleeve 3, the quick piston rod 4, the piston 5 and the sealing bottom 10.

Wherein, the cylinder body 1 and the main piston rod 2 are made of No. 45 steel and are forged. The guide sleeve 3 is arranged at one end inside the cylinder body 1 to play a role in sealing and guiding the operation of the main piston rod 2, and the sealing bottom 10 is arranged at the other end inside the cylinder body 1 and is a carrier of the quick piston rod 4. The main piston rod 2 is provided inside the cylinder 1 as an element for outputting force. The piston 5 is arranged at one end of the main piston rod 2, which is positioned in the cylinder body 1, the piston 5 is contacted with the inner wall of the cylinder body 1, the effect of isolating the rod cavity and the rodless cavity is achieved, and the main piston rod 2 is driven to move by hydraulic pressure. The other end of the main piston rod 2 extends into the guide sleeve 3 and contacts with the inner wall of the guide sleeve 3. The main piston rod 2 is further provided with a pressing ring 9, and the pressing ring 9 is located on one side of the piston 5 and used for pressing the piston 5.

An upper cavity oil inlet 11 is formed in the area, between the piston 5 and the sealing bottom 10, of the outer wall of the cylinder body 1 and used for inputting hydraulic oil to a rodless cavity of the hydraulic cylinder, and a lower cavity oil inlet 12 is formed in the area, between the piston 5 and the guide sleeve 3, of the outer wall of the cylinder body 1 and used for inputting hydraulic oil to a rod cavity of the hydraulic cylinder.

In this embodiment, the end of the main piston rod 2 inside close to the sealing bottom 10 is provided with a quick piston rod accommodating cavity 21, one end of the quick piston rod 4 is fixed on the sealing bottom 10, and the other end of the quick piston rod 4 extends into the quick piston rod accommodating cavity 21.

Specifically, the inside of the quick piston rod 4 is provided with a quick piston rod inner cavity 40, the end of the quick piston rod 4 fixed to one end of the sealing bottom 10 is provided with a quick piston rod oil inlet 41, one end of the quick piston rod inner cavity 40 is communicated with the quick piston rod oil inlet 41, and the other end of the quick piston rod inner cavity 40 is communicated with the quick piston rod accommodating cavity 21. The inside of the quick piston rod 4 can be input with hydraulic oil from the quick piston rod oil inlet 41, so as to realize the function of quickly pushing the main piston rod 2. The sealing bottom 10 is provided with a through hole 101, the quick piston rod 4 passes through the through hole 101 and extends into the quick piston rod accommodating cavity 21, and one end of the quick piston rod 4, which is positioned at the outer side of the sealing bottom 10, is fixed with the sealing bottom 10 through a screw 102.

Furthermore, a liquid filling port 13 is further formed in the outer wall of the cylinder body 1 in the area between the piston 5 and the sealing bottom 10, a liquid filling tank 7 is arranged on one side of the cylinder body 1, hydraulic oil 8 is contained in the liquid filling tank 7, the liquid filling tank 7 is connected with the liquid filling port 13 through a liquid filling pipeline, a one-way liquid filling valve 6 is arranged on the liquid filling pipeline, and hydraulic oil 8 can be quickly supplemented to the rodless cavity from the liquid filling tank 7.

The utility model discloses a quick pneumatic cylinder's theory of operation as follows:

when the hydraulic cylinder works, hydraulic oil can enter the quick piston rod oil inlet 41 through an external hydraulic station, because the sectional area of the inner cavity of the quick piston rod 4 is small, the main piston rod 2 can be quickly pushed out under the condition of certain oil quantity, the speed is far 2-3 times faster than that of the main piston rod 2 pushed by the upper cavity oil inlet 11, the speed obtained according to different proportions of the sectional areas can be different, in addition, when the main piston rod 2 is quickly operated, because the upper cavity, namely a rodless cavity, is a sealed space, a vacuum is generated, the one-way valve core of the one-way liquid filling valve 6 is opened, hydraulic oil 8 in the liquid filling tank 7 is quickly sucked back to enter the upper cavity of the piston, and. To sum up, the utility model discloses a quick hydraulic cylinder can save cost and consumption when realizing quick feed's quick hydraulic cylinder.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fast acting hydraulic cylinder, comprising: the cylinder body (1), the main piston rod (2), the guide sleeve (3), the quick piston rod (4), the piston (5) and the sealing bottom (10);

the guide sleeve (3) is arranged at one end inside the cylinder body (1), and the sealing bottom (10) is arranged at the other end inside the cylinder body (1); the main piston rod (2) is arranged inside the cylinder body (1), one end, located inside the cylinder body (1), of the main piston rod (2) is provided with a piston (5), the piston (5) is in contact with the inner wall of the cylinder body (1), the other end of the main piston rod (2) extends into the guide sleeve (3) and is in contact with the inner wall of the guide sleeve (3), an upper cavity oil inlet (11) is formed in the area, located between the piston (5) and the sealing bottom (10), of the outer wall of the cylinder body (1), and a lower cavity oil inlet (12) is formed in the area, located between the piston (5) and the guide sleeve (3), of the outer wall of the cylinder body (1);

a quick piston rod accommodating cavity (21) is formed in one end, close to the sealing bottom (10), of the interior of the main piston rod (2), one end of the quick piston rod (4) is fixed on the sealing bottom (10), and the other end of the quick piston rod (4) extends into the quick piston rod accommodating cavity (21); the quick piston rod sealing device is characterized in that a quick piston rod inner cavity (40) is formed in the quick piston rod (4), a quick piston rod oil inlet (41) is formed in the end portion, fixed to one end of the sealing bottom (10), of the quick piston rod (4), one end of the quick piston rod inner cavity (40) is communicated with the quick piston rod oil inlet (41), and the other end of the quick piston rod inner cavity (40) is communicated with the quick piston rod accommodating cavity (21).

2. A rapid hydraulic cylinder according to claim 1, characterized in that the main piston rod (2) is further provided with a pressing ring (9), and the pressing ring (9) is located on one side of the piston (5) for pressing the piston (5).

3. A fast hydraulic cylinder according to claim 1, characterized in that the outer wall of the cylinder body (1) is further provided with a liquid filling port (13) in the area between the piston (5) and the sealing bottom (10), one side of the cylinder body (1) is provided with a liquid filling tank (7), hydraulic oil (8) is contained in the liquid filling tank (7), and the liquid filling tank (7) is connected with the liquid filling port (13) through a liquid filling pipeline.

4. A hydraulic cylinder according to claim 3, characterized in that the charging line is provided with a one-way charging valve (6).

5. A quick hydraulic cylinder according to claim 1, characterized in that the sealing bottom (10) is provided with a through hole (101), the quick piston rod (4) passes through the through hole (101) and extends into the quick piston rod accommodating cavity (21), and one end of the quick piston rod (4) located outside the sealing bottom (10) is fixed with the sealing bottom (10) through a screw (102).

6. A hydraulic cylinder according to claim 1, characterized in that the cylinder body (1) and the main piston rod (2) are made of 45 steel.