CN218294050U

CN218294050U - Oil cylinder provided with sensor magnetic ring

Info

Publication number: CN218294050U
Application number: CN202220838466.9U
Authority: CN
Inventors: 翁迪; 范晓龙; 翁祖铨
Original assignee: Longyan Shanli Engineering Hydraulic Co ltd
Current assignee: Longyan Shanli Engineering Hydraulic Co ltd
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2023-01-13
Anticipated expiration: 2032-04-12

Abstract

The application relates to the field of oil cylinders, in particular to an oil cylinder provided with a sensor magnetic ring, which comprises a cylinder barrel, a plug rod assembly, a magnetic ring and an elastic positioning device, wherein the plug rod assembly is arranged in the cylinder barrel, the plug rod assembly is sleeved with the magnetic ring, the magnetic ring is provided with a magnetic conduction part, the elastic positioning device is arranged between the magnetic ring and the plug rod assembly, and the elastic positioning device is used for resetting the magnetic ring in a rotating manner. This application can accurately hold stopper rod subassembly stroke, the during operation of being convenient for control and calibration through the hydro-cylinder structure of built-in magnetic ring. Because the magnetic ring adopts the part to set up magnetic conduction portion, the other major part composition of magnetic ring can use lighter or cheap material, not only reduce cost and reduce the product dead weight.

Description

Oil cylinder provided with sensor magnetic ring

Technical Field

The application relates to the technical field of air blowers, in particular to an oil cylinder provided with a sensor magnetic ring.

Background

From the development of hydraulic technology to the present, hydraulic cylinders have been widely used in various fields, and with the technological progress, industrial production gradually turns to automation. In a hydraulic cylinder, the following two elements for realizing automation generally comprise a displacement sensor for detecting linear displacement; the other is a proximity switch for controlling and monitoring the hydraulic cylinder. The two elements can be used independently or cooperatively. The displacement sensor usually comprises a magnetic ring which is fixed to the piston or piston rod with screws. In order to ensure that the magnetic ring has enough magnetism, the magnetic ring is generally thick and heavy, and the problems of increasing the production cost of the oil cylinder and the weight of the oil cylinder exist.

SUMMERY OF THE UTILITY MODEL

Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.

The utility model provides an aim at of installation sensor magnetic ring's hydro-cylinder is provided to the aforesaid of overcoming not enough, and the hydro-cylinder carries out accurate stroke control, the improvement hydro-cylinder to piston and piston rod through installation magnetic ring, cooperation proximity switch.

In order to achieve the purpose, the technical solution of the application is as follows: an oil cylinder for mounting a sensor magnetic ring comprises a cylinder barrel, a plug rod assembly, a magnetic ring and an elastic positioning device, wherein the plug rod assembly is arranged in the cylinder barrel, the plug rod assembly is sleeved with the magnetic ring, the magnetic ring is provided with a magnetic conduction part, the elastic positioning device is arranged between the magnetic ring and the plug rod assembly, and the elastic positioning device is used for resetting the rotation of the magnetic ring. The magnetic ring is a ring body with partial magnetic conductivity, and one, two or more magnetic conductive parts, for example two magnetic conductive parts, are respectively and symmetrically arranged on the magnetic ring.

In some embodiments, the elastic positioning device includes a coil spring, an inner ring positioning portion and an outer ring positioning portion, the inner ring positioning portion is disposed on the plug rod assembly, the outer ring positioning portion is disposed on the magnetic ring, and two ends of the coil spring are respectively connected to the inner ring positioning portion and the outer ring positioning portion. The elastic positioning device is used for keeping the magnetic ring and the plug rod assembly in a certain position relation, so that the position of the magnetic conduction part is relatively fixed, and the magnetic conduction part is convenient to be matched with a magnet, a proximity switch and the like outside the cylinder barrel.

In some embodiments, the stopper rod assembly comprises a piston rod and a piston.

In some embodiments, the cylinder bore includes a front cylinder head and a rear cylinder head.

In some embodiments, a dustproof ring, a support ring and a rod seal are arranged between the piston rod and the front cylinder cover, and the sealing structure effectively provides the dustproof performance and the sealing performance of the oil cylinder and the service life of the oil cylinder.

In some embodiments, an elastic washer, a nut and a pull rod are arranged on the outer side of the rear cylinder cover, and the pull rod penetrates through the elastic washer and the nut to fix the cylinder cover on the cylinder barrel.

In some embodiments, the cylinder is provided with a magnet. The magnet attracts the magnetic conduction part to fix the position of the magnetic conduction part and prevent the plug rod assembly from deflecting.

In some embodiments, the cylinder outer wall is provided with a proximity switch.

In some embodiments, the cylinder and plug rod assembly is made of a non-magnetic material.

The working principle of the application is as follows:

this application is through locating the magnetic ring on hydro-cylinder cock stem subassembly to set up proximity switch at the hydro-cylinder outer wall, can trigger inductive switch when the hydro-cylinder moves to particular position, produce the signal, feed back to control system. Through adopting foretell technical scheme, the beneficial effect of this application is:

this application can accurately hold stopper rod subassembly stroke, the during operation of being convenient for control and calibration through the hydro-cylinder structure of built-in magnetic ring. Because the magnetic ring adopts the part to set up magnetic conduction portion, the other major part composition of magnetic ring can use lighter or cheap material, not only reduce cost and reduce the product dead weight. Correspondingly, the elastic positioning device adopting the coil spring relatively fixes the position of the magnetic conduction part, so that the magnetic conduction part is matched with the magnet, the proximity switch and the like outside the cylinder barrel conveniently, the product is more flexible to use, and the structural stability is higher.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Clearly, such objects and other objects of the present application will become more apparent after a detailed description of the preferred embodiments thereof as illustrated in the various figures and drawings.

These and other objects, features and advantages of the present application will become more apparent from the following detailed description of one or more preferred embodiments, which is to be read in connection with the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application and not to limit the application.

In the drawings, like parts are designated with like reference numerals, and the drawings are schematic and not necessarily drawn to scale.

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

FIG. 1 is a schematic diagram of an oil cylinder with a sensor magnetic ring mounted thereon according to some embodiments of the present disclosure;

fig. 2 is a schematic side view of an oil cylinder with a sensor magnetic ring according to some embodiments of the present disclosure.

Description of the main reference numerals:

1. a piston rod; 2. a dust ring; 3. a support ring; 4. sealing the rod; 5. a front cylinder cover; 6. a cylinder barrel; 7. a piston; 8, sealing the piston; 9. a magnetic ring; 91. a magnetic conductive part; 92. a coil spring; 93. an inner ring positioning part; 94. an outer ring positioning part; 10. a rear cylinder cover; 11. an elastic washer; 12. a nut; 13. a pull rod; 14. a magnet; 15. a proximity switch.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail with reference to the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are given by way of illustration only.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. However, the direct connection means that the two bodies are not connected through a transition structure, but are connected through a connection structure to form a whole. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

According to some embodiments of the present application, the present application provides an oil cylinder for installing a sensor magnetic ring 9, which includes a cylinder barrel 6, a plug rod assembly, a magnetic ring 9, and an elastic positioning device, wherein the cylinder barrel 6 and the plug rod assembly are made of non-magnetic conductive materials. The stopper rod assembly is arranged in the cylinder 6. The stopper rod assembly comprises a piston rod 1 and a piston 7. In this embodiment, the plug rod is sleeved with a magnetic ring 9, piston seals 8 are arranged on two sides of the magnetic ring 9, the magnetic ring 9 is provided with a magnetic conduction part 91, and an elastic positioning device is arranged between the magnetic ring 9 and the piston 7 and is used for resetting the rotation of the magnetic ring 9. The magnetic ring 9 is a ring body with partial magnetic permeability, and one, two or more, for example two, magnetic permeable portions 91 thereof are respectively and symmetrically arranged on the magnetic ring 9.

The elastic positioning device comprises a coil spring 92, an inner ring positioning part 93 and an outer ring positioning part 94, wherein the inner ring positioning part 93 is arranged on the plug rod assembly, the outer ring positioning part 94 is arranged on the magnetic ring 9, and two ends of the coil spring 92 are respectively connected with the inner ring positioning part 93 and the outer ring positioning part 94. The elastic positioning device is used for keeping the magnetic ring 9 and the plug rod assembly in a certain position relation, so that the position of the magnetic conduction part 91 is relatively fixed, and the magnetic conduction part 91 is convenient to be matched with the magnet 14, the proximity switch 15 and the like outside the cylinder 6.

The cylinder barrel 6 is further provided with a front cylinder cover 5 and a rear cylinder cover 10, a dustproof ring 2, a support ring 3 and a rod seal 4 are arranged between the piston rod 1 and the front cylinder cover 5, the sealing structure effectively provides the dustproof performance and the sealing performance of the oil cylinder, and the service life of the oil cylinder is prolonged. An elastic washer 11, a nut 12 and a pull rod 13 are arranged on the outer side of the rear cylinder cover 10, and the pull rod 13 penetrates through the elastic washer 11 and the nut 12 to fix the cylinder cover on the cylinder barrel 6.

The outer wall of the cylinder barrel 6 is provided with a magnet 14 and a proximity switch 15. The magnet 14 attracts the magnetic conductive part 91 to fix the position of the magnetic conductive part 91 and prevent the stopper rod assembly from deflecting.

It is to be understood that the embodiments disclosed herein are not limited to the particular process steps or materials disclosed herein, but rather, are extended to equivalents thereof as would be understood by those of ordinary skill in the relevant art. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.

Reference in the specification to "an embodiment" means that a particular feature, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the appearances of the phrase or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.

Furthermore, the described features or characteristics may be combined in any other suitable manner in one or more embodiments. In the above description, certain specific details are provided, such as thicknesses, amounts, etc., to provide a thorough understanding of embodiments of the present application. One skilled in the relevant art will recognize, however, that the application can be practiced without one or more of the specific details, or with other methods, components, materials, etc.

Claims

1. An oil cylinder provided with a sensor magnetic ring is characterized by comprising a cylinder barrel, a plug rod assembly, a magnetic ring and an elastic positioning device, wherein the plug rod assembly is arranged in the cylinder barrel, the plug rod assembly is sleeved with the magnetic ring, the magnetic ring is provided with a magnetic conduction part, the elastic positioning device is arranged between the magnetic ring and the plug rod assembly and is used for resetting the rotation of the magnetic ring.

2. The cylinder for installing the sensor magnetic ring as claimed in claim 1, wherein the elastic positioning device comprises a coil spring, an inner ring positioning portion and an outer ring positioning portion, the inner ring positioning portion is disposed on the plug rod assembly, the outer ring positioning portion is disposed on the magnetic ring, and two ends of the coil spring are respectively connected to the inner ring positioning portion and the outer ring positioning portion.

3. The cylinder for mounting a sensor magnetic ring as recited in claim 2, wherein said plug assembly comprises a piston rod and a piston.

4. The cylinder with the sensor magnetic ring installed as claimed in claim 3, wherein the cylinder barrel includes a front cylinder cover and a rear cylinder cover.

5. The oil cylinder with the sensor magnetic ring installed as claimed in claim 4, wherein a dust ring, a support ring and a rod seal are provided between the piston rod and the front cylinder cover.

6. The cylinder with the sensor magnetic ring installed thereon as claimed in claim 5, wherein the back cylinder cover is provided at an outer side thereof with an elastic washer, a nut, and a pull rod, the pull rod passing through the elastic washer and the nut to fix the cylinder cover to the cylinder barrel.

7. An oil cylinder provided with a sensor magnetic ring as claimed in claim 1, wherein the cylinder barrel is provided with a magnet.

8. The cylinder for installing the sensor magnetic ring as claimed in claim 1, wherein the outer wall of the cylinder barrel is provided with a proximity switch.

9. The cylinder for mounting the sensor magnetic ring as claimed in claim 1, wherein the cylinder and the plug rod assembly are made of non-magnetic conductive material.