CN218408000U

CN218408000U - Novel hollow hydraulic oil cylinder

Info

Publication number: CN218408000U
Application number: CN202222862955.0U
Authority: CN
Inventors: 李文斌; 李鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-01-31
Anticipated expiration: 2032-10-28

Abstract

The utility model belongs to the technical field of oil, natural gas and coal mining equipment, equipment maintenance tools and hydraulic cylinders, and discloses a novel hollow hydraulic cylinder.A hole is arranged at the center of a cylinder base, an inner cylinder barrel is welded at the hole, and an outer cylinder barrel is arranged outside the inner cylinder barrel; and a piston is connected between the outer side of the inner cylinder barrel and the inner side of the outer cylinder barrel in a sliding manner and is fixedly connected with the piston rod. The top of the piston rod is provided with an upper flange through a locking screw, and a bearing is arranged on the upper flange; the upper flange is a ring-shaped flange, and a hole is formed in the center of the upper flange. An opening at the lower end of the outer cylinder barrel is provided with an uplink oil cavity port, an opening at the upper end of the outer cylinder barrel is provided with a downlink oil cavity port, and the downlink oil cavity port extends to the lower end of the outer cylinder barrel through a pipeline. The utility model solves the hollow structural design problem of the hydraulic oil cylinder in the prior art; the hydraulic oil cylinder solves the problem that the design and the use are complicated due to the structural defect of the common hydraulic oil cylinder under the specific condition.

Description

Novel hollow hydraulic oil cylinder

Technical Field

The utility model belongs to the technical field of oil, natural gas, coal mining equipment, equipment maintenance instrument, hydraulic cylinder, especially, relate to a novel cavity hydraulic cylinder.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. 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; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device. The damping device and the exhaust device are determined according to specific application occasions, and other devices are necessary.

At present, when a hydraulic oil cylinder is used as a transmission part under certain specific working environment positions, excessive frame structures are needed to assist to achieve the required effect, the complexity of the hydraulic oil cylinder is increased and a large amount of materials are consumed due to the excessive frame structures, the design height of the hydraulic oil cylinder is increased accordingly, and the danger coefficient is greatly increased during maintenance operation. The existing hydraulic oil cylinder has the technical problem that the center of the existing hydraulic oil cylinder cannot penetrate through the hollow part, so that the hydraulic oil cylinder cannot be reasonably utilized or is complicated to utilize under the conditions of certain specific environmental position factors and the like.

Through the above analysis, the problems and defects of the prior art are as follows: the existing hydraulic oil cylinder has the technical problem that the center of the existing hydraulic oil cylinder cannot penetrate through the hollow part, so that the hydraulic oil cylinder cannot be reasonably utilized or is complicated to utilize under the conditions of certain specific environmental position factors and the like.

SUMMERY OF THE UTILITY MODEL

To the problem that prior art exists, the utility model provides a novel cavity hydraulic cylinder.

The utility model is realized in such a way, a novel hollow hydraulic oil cylinder is provided with an oil cylinder base; an opening is formed in the center of the oil cylinder base, an inner cylinder barrel is welded to the opening, and an outer cylinder barrel is arranged on the outer side of the inner cylinder barrel;

and a piston is slidably connected between the outer side of the inner cylinder barrel and the inner side of the outer cylinder barrel and is fixedly connected with the piston rod.

Furthermore, the top of the piston rod is provided with an upper flange through a locking screw, and the upper flange is provided with a bearing.

Furthermore, the upper flange is an annular flange, and a hole is formed in the center of the upper flange.

Further, the piston and the piston rod are located in an annular space between the outer side of the inner cylinder and the inner side of the outer cylinder.

Furthermore, an opening at the lower end of the outer cylinder barrel is provided with an uplink oil cavity opening, an opening at the upper end of the outer cylinder barrel is provided with a downlink oil cavity opening, and the downlink oil cavity opening extends to the lower end of the outer cylinder barrel through a pipeline.

Furthermore, an inner annular cylinder cover is arranged between the top end of the inner cylinder barrel and the piston rod, and an outer annular cylinder cover is arranged between the piston rod and the top end of the outer cylinder barrel.

Furthermore, the joint of the piston and the piston rod is provided with an oil hole for smooth mutual circulation of hydraulic oil in two annular spaces between the inner cylinder barrel and the piston rod above the piston and between the outer cylinder barrel and the piston rod.

Combine the technical problem of foretell technical scheme and solution, the utility model discloses the advantage and the positive effect that technical scheme that will protect possessed are:

the utility model discloses cavity hydraulic cylinder positive center forms cylindrical space from the last flange at piston rod top to hydro-cylinder base bottom center to exist and formed two totally enclosed annular oil cavity rooms between inner cylinder and the outer cylinder by the piston. In the using process, the central space of the hollow hydraulic cylinder is utilized to pass through the hollow hydraulic cylinder through certain objects or workpieces and the like to be fixed on the upper flange at the top end of the piston rod, so that the objects are lifted, contracted or moved, and the defects in the use of the traditional hydraulic cylinder are overcome. The utility model solves the hollow structural design problem of the hydraulic oil cylinder in the prior art; the hydraulic oil cylinder solves the problem that the design and the use are complicated due to the structural defect of the common hydraulic oil cylinder under the specific condition. The utility model discloses cavity hydraulic cylinder is under specific condition, and is more practical and portable.

Traditional hydraulic cylinder is not hollow from the top down and runs through because the center, consequently utilize hydraulic cylinder to assist when transmission part need too much frame construction to reach required effect under special circumstances, and the design height and the volume of complete machine also consequently increase, the utility model discloses hollow hydraulic cylinder's the hollow design that runs through thoroughly overturns hydraulic cylinder's an understanding, and it is fixed to let the object pass the upper flange top on the cylindrical space arrival piston rod in hollow hydraulic cylinder's the interior cylinder under the special use to realize lifting, shrink or the removal of object. The complicated design of too much frame construction has been solved, the height that has reduced the use simultaneously reduces the potential safety hazard greatly, has more realized the saving of material.

The technical scheme of the utility model fill technical blank in the industry at home and abroad: the hydraulic oil cylinder is generally solid at home and abroad, and the center of the hydraulic oil cylinder can be fully and efficiently utilized by the hollow design of the center of the hydraulic oil cylinder, so that the transmission of objects is realized.

The technical scheme of the utility model whether solved people and crave the solution all the time, nevertheless fail to obtain successful technological problem all the time: for example, an existing object needs to be lifted or moved, but cannot be lifted, contracted or moved by applying force on one side in a single direction, and the center of gravity of the object is shifted, so that two hydraulic cylinders are needed to apply force to the object on the left and right sides of the object simultaneously, and excessive frames and other supporting structures are added to achieve the required effect. But the application is complicated, the synchronization and the gravity center shift can not be accurately ensured, and the larger motor power or oil pump flow required by two common oil cylinders can not be ensured if the power or the flow can not meet the requirement. The hollow hydraulic oil cylinder can select the hole diameter at the center of the hollow hydraulic oil cylinder to be larger than the diameter of objects such as ropes, rods, pipes, pins and shafts according to the using conditions, and the hollow hydraulic oil cylinder is directly sleeved on the objects, so that the objects can be more conveniently transmitted under the condition of not changing the position of the center of gravity.

The technical scheme of the utility model overcome and compensate people to the technical cognition prejudice of hydraulic cylinder structure.

Drawings

Fig. 1 is a schematic structural view of a novel hollow hydraulic cylinder provided by an embodiment of the present invention;

in the figure: 1. an oil cylinder base; 2. an outer cylinder barrel; 3. an inner cylinder barrel; 4. an outer annular cylinder head; 5. an inner annular cylinder head; 6. a piston; 7. a piston rod; 8. an upper flange; 9. a bearing; 10. locking screws; 11. a downlink oil cavity port; 12. an upstream oil cavity port; 13. and (5) oil eye ventilation. 14. The descending oil cavity opening extends the pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1: the embodiment of the utility model provides a novel cavity hydraulic cylinder is provided with hydro-cylinder base 1, and 1 center department of hydro-cylinder base is provided with the trompil, and trompil department is provided with inner cylinder 3, and the 3 outsides of inner cylinder are provided with outer cylinder 2. An opening at the lower end of the outer cylinder barrel 2 is provided with an uplink oil cavity port 12, an opening at the upper end of the outer cylinder barrel 2 is provided with a downlink oil cavity port 11, and the downlink oil cavity port 11 extends to the lower end of the outer cylinder barrel 2 through a pipeline; a piston 6 is connected between the outer side of the inner cylinder 3 and the inner side of the outer cylinder 2 in a sliding mode, the piston 6 is fixedly connected with a piston rod 7, and the piston 6 and the piston rod 7 are located in an annular space between the outer side of the inner cylinder 3 and the inner side of the outer cylinder 2. Install inboard annular cylinder cap 5 between 3 tops of interior cylinder barrel and the piston rod 7, install outside annular cylinder cap 4 between piston rod 7 and the 2 tops of outer cylinder barrel and outside annular cylinder cap 4 bottom is less than down oil chamber mouth 11 and can not block up hydraulic oil stream and pass through down oil chamber mouth 11, will not move when piston 6 moves outside annular cylinder cap 4 bottom, can also remain certain space and can effectively exert pressure to piston 6 when executing piston 6 to descend and accomplish and descend. Thus, two completely closed oil cavities are formed in the hollow oil cylinder, and the up-and-down stroke of the piston rod 7 is realized. An upper flange 8 is installed at the top of the piston rod 7 through a locking screw 10, the upper flange 8 is an annular flange, the center of the upper flange is provided with a hole, a bearing 9 is installed on the upper flange 8, and a penetrating cylindrical hollow area is formed from the center of the top of the upper flange 8 to the center of the oil cylinder base 1. (the object to be driven is inserted through the hole to drive the object). The joint of the piston 6 and the piston rod 7 is also provided with an oil through hole 13, so that hydraulic oil can flow through the oil through hole 13 and a gap between the inner cylinder 3 and the piston rod 7 and a gap between the outer cylinder 2 and the piston rod 7, and the problems of oil shortage and formation of a vacuum environment between the inner cylinder 3 and the piston rod 7 are effectively solved. Wherein, the outer cylinder barrel 2, the inner cylinder barrel 3, the piston 6 and the piston rod 7 are all made of special steel pipes with different diameters for oil cylinders by finish machining.

The utility model discloses a theory of operation does: the motor provides kinetic energy to drive the hydraulic oil pump, hydraulic oil enters the descending oil cavity opening 11 through the hydraulic pipeline, the hydraulic oil generates downward thrust on the piston 6, the piston 6 drives the piston rod 7 to descend, and then the hollow hydraulic oil cylinder is contracted, so that an object fixed on the upper flange 8 is driven to move along with the contraction direction of the oil cylinder. At the same time, the hydraulic oil below the piston 6 flows into the hydraulic oil tank through the upward oil chamber port 12. When hydraulic oil enters the upward oil cavity opening 12 through a hydraulic pipeline, the hydraulic oil generates upward thrust on the piston 6, the piston 6 drives the piston rod 7 to ascend, and further the hollow hydraulic oil cylinder extends, so that an object fixed on the upper flange 8 is driven to move along with the extending direction of the hydraulic oil cylinder. At the same time, the hydraulic oil above the piston 6 flows back to the hydraulic oil tank through the down oil chamber opening 11.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above description is only for the specific implementation of the present invention, but the protection scope of the present invention is not limited thereto, and any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a novel cavity hydraulic cylinder which characterized in that, novel cavity hydraulic cylinder is provided with:

an oil cylinder base;

an opening is formed in the center of the oil cylinder base, an inner cylinder barrel is arranged at the opening, and an outer cylinder barrel is arranged on the outer side of the inner cylinder barrel;

and a piston is connected between the outer side of the inner cylinder barrel and the inner side of the outer cylinder barrel in a sliding manner and is fixedly connected with the piston rod.

2. The novel hollow hydraulic oil cylinder as claimed in claim 1, wherein the top of the piston rod is provided with an upper flange through a locking screw, and the upper flange is provided with a bearing.

3. The novel hollow hydraulic oil cylinder as claimed in claim 2, wherein the upper flange is a ring-shaped flange, and the center of the upper flange is provided with a hole.

4. The novel hollow hydraulic cylinder as claimed in claim 1, wherein said piston and piston rod are located in the annular space outside the inner cylinder and inside the outer cylinder.

5. The novel hollow hydraulic oil cylinder as claimed in claim 1, wherein the lower end opening of the outer cylinder barrel is provided with an ascending oil cavity port, the upper end opening of the outer cylinder barrel is provided with a descending oil cavity port, and the descending oil cavity port extends to the lower end of the outer cylinder barrel through a pipeline.

6. The novel hollow hydraulic oil cylinder as claimed in claim 1, wherein an inner annular cylinder cover is installed between the top end of the inner cylinder barrel and the piston rod, and an outer annular cylinder cover is installed between the piston rod and the top end of the outer cylinder barrel.

7. The novel hollow hydraulic oil cylinder as claimed in claim 1, wherein an oil hole is arranged at the joint of the piston and the piston rod.