CN209818419U

CN209818419U - Lifting oil cylinder and robot with same

Info

Publication number: CN209818419U
Application number: CN201920182579.6U
Authority: CN
Inventors: 周林榛
Original assignee: Chengdu Hangfa Robot Co Ltd
Current assignee: Chengdu Hangfa Robot Co Ltd
Priority date: 2019-02-01
Filing date: 2019-02-01
Publication date: 2019-12-20
Anticipated expiration: 2029-02-01

Abstract

The utility model discloses a lifting oil cylinder, including cylinder, uide bushing, at inside piston rod, the vertical displacement expansion bracket that stretch out and draw back of cylinder and be used for carrying out the fixing device that fixes with this lifting oil cylinder. The lifting oil cylinder is simple in structure, suitable for the conditions of heavy load and the like, capable of bearing larger lateral force, capable of avoiding the condition that a piston rod is inclined and damaged inside a cylinder barrel, capable of guaranteeing the integral balance degree of the oil cylinder and high in stability. The utility model also discloses a robot with above-mentioned lift cylinder, this robot has great stability at the in-process that goes up and down, even when bearing great yawing force, also can guarantee the equilibrium and the stability of robot, guarantees the safety of robot.

Description

Lifting oil cylinder and robot with same

Technical Field

The utility model belongs to the technical field of the hydro-cylinder, especially, relate to a lift cylinder and have robot of this lift 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.

In the robot at present, a lifting oil cylinder is one of devices which are frequently used, and the purpose of lifting the robot can be achieved through the lifting oil cylinder. However, the existing lifting oil cylinder cannot bear large lateral force, and under the condition of bearing large lateral force for a long time, the lifting oil cylinder is easy to deform, crack, break and other damages, even brings potential safety hazards, and greatly influences the working efficiency of the robot.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model aims to provide a lifting oil cylinder which can bear larger lateral force compared with the traditional oil cylinder, avoid the condition that a piston rod is inclined and damaged inside a cylinder barrel and ensure the integral balance degree of the oil cylinder when in use; another object of the utility model is to provide a robot with this lift cylinder, the robot that has this lift cylinder can bear bigger yawing force, has stronger stability, uses safelyr.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a lifting oil cylinder comprises a cylinder barrel and a piston rod which stretches inside the cylinder barrel, wherein a main wear-resistant belt and an auxiliary wear-resistant belt which can bear lateral force are arranged between the outer wall of the piston rod and the inner wall of the cylinder barrel.

Further, a guide sleeve is arranged at the top of the cylinder barrel, the piston rod penetrates through the guide sleeve and is stretched in the cylinder barrel, and a main wear-resistant belt and an auxiliary wear-resistant belt are sequentially arranged at the contact position of the outer wall of the piston rod and the inner wall of the guide sleeve from top to bottom; when the piston rod stretches inside the cylinder barrel, the main wear-resistant belt and the auxiliary wear-resistant belt between the outer wall of the piston rod and the inner wall of the guide sleeve simultaneously strengthen the lateral stress of the piston rod.

Furthermore, a guide sleeve is arranged at the top of the cylinder barrel, the piston rod penetrates through the guide sleeve and is stretched in the cylinder barrel, a limiting ring which has a limiting effect on the piston rod is arranged at the bottom of the piston rod, a main wear-resistant belt is arranged at the contact position of the outer wall of the piston rod and the outer wall of the guide sleeve, and an auxiliary wear-resistant belt is arranged at the contact position of the outer wall of the limiting ring and the inner wall of the cylinder barrel; when the piston rod stretches inside the cylinder barrel, the main wear-resistant belt between the outer wall of the piston rod and the inner wall of the guide sleeve and the auxiliary wear-resistant belt between the outer wall of the limiting ring and the inner wall of the cylinder barrel simultaneously strengthen lateral stress of the piston rod, and a certain distance exists between the main wear-resistant belt and the auxiliary wear-resistant belt, so that the piston rod can simultaneously bear larger lateral force.

Furthermore, in order to further improve the telescopic stability of the piston rod in the cylinder and prevent the piston rod from deflecting when the piston rod is telescopic in the cylinder, a vertical displacement telescopic frame is arranged at the top of the piston rod and is connected with the top of the piston rod through a displacement connecting plate; the vertical displacement telescopic frame comprises a displacement support and a telescopic rod which stretches out and draws back in the displacement support, the displacement support is movably fixed on the outer wall of the cylinder barrel, one end of the telescopic rod is movably fixed on the displacement connecting plate, and the other end of the telescopic rod is located inside the displacement support and stretches out and draws back inside the displacement support.

Further, a fixing device is arranged on the outer wall of the cylinder barrel; the fixing device comprises four mounting bodies with screw holes, and two mounting bodies are respectively fixed on two sides of the cylinder barrel.

Further, a fixing device is arranged on the outer wall of the cylinder barrel; the fixing device is a bottom connecting piece and is positioned at the bottom of the cylinder barrel.

Furthermore, in order to improve the telescopic stability of the piston rod in the cylinder and prevent the piston rod from deflecting during the telescopic process in the cylinder, an anti-rotation guide mechanism is arranged on the side wall of the top of the piston rod, is fixed at the top of the piston rod and is positioned on the opposite side of the vertical displacement telescopic frame, and comprises a guide chute and a slide rule sliding in the guide chute; the guide sliding groove fixes the outer wall of the cylinder barrel, and the top of the sliding ruler is connected with the top of the piston rod.

Furthermore, a dust ring, a main wear-resistant belt, a first sealing ring, a second sealing ring and an auxiliary wear-resistant belt are respectively arranged at the contact position of the inner side wall of the guide sleeve and the piston rod from top to bottom, the dust ring is positioned at the top of the guide sleeve, and a third sealing ring is arranged at the contact position of the outer wall of the guide sleeve and the inner wall of the cylinder barrel.

Further, the contact position of the inner wall of the guide sleeve and the outer wall of the piston rod is respectively provided with a dustproof ring, a main wear-resistant belt, a first sealing ring and a second sealing ring from top to bottom, the dustproof ring is positioned at the top of the guide sleeve, the contact position of the outer wall of the guide sleeve and the inner wall of the cylinder barrel is provided with a third sealing ring, and a combined sealing element is arranged between the outer wall of the limiting ring and the inner wall of the cylinder barrel.

A robot with the lifting oil cylinders is provided with four lifting oil cylinders at the bottom.

The utility model has the advantages that:

(1) the utility model has simple structure, increases the capability of bearing the lateral force, avoids the possibility of the inclination of the piston rod when bearing the lateral force, can avoid the deflection or deformation of the piston rod when the piston rod stretches in the cylinder barrel, avoids the deformation, the crack, the fracture and the like, can also prevent the rotation of the piston rod in the cylinder barrel, ensures the lifting stability of the oil cylinder, reduces the possibility of damage, and greatly improves the service life of the oil cylinder;

(2) the utility model provides a robot with this lift cylinder can guarantee that whole robot has great stability at the in-process that goes up and down, even when bearing great yawing force, also can guarantee the equilibrium and the stability of robot, guarantees the safety of robot.

Drawings

FIG. 1 is a perspective view of embodiment 1;

FIG. 2 is a perspective view of embodiment 1;

FIG. 3 is a front view of embodiment 1;

FIG. 4 is a sectional view of embodiment 1;

FIG. 5 is a partial sectional view of embodiment 1;

FIG. 6 is a front view of embodiment 2;

FIG. 7 is a sectional view of embodiment 3;

FIG. 8 is a front view of embodiment 4;

FIG. 9 is a perspective view of embodiment 4;

FIG. 10 is a perspective view of embodiment 4 with elevation.

In the figure: 1. a cylinder barrel; 2. a guide sleeve; 3. a piston rod; 4. a support plate; 5. a displacement bracket; 5-1, a telescopic rod; 6. a composite seal; 7. nylon rings; 8. a first seal ring; 9. a dust ring; 10. a second seal ring; 11. a third seal ring; 12. a displacement connecting plate; 13. a sliding rule; 14. a primary wear strip; 15. an auxiliary wear-resistant band; 16. an installation body; 17. an oil outlet fitting; 18. a bottom connector; 19. a fixing plate; 20. a guide chute.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further explained with reference to the accompanying drawings.

Example 1

In embodiment 1, as shown in fig. 1 to 5, a lift cylinder includes a cylinder barrel 1, a guide sleeve 2, a piston rod 3 extending inside the cylinder barrel 1, a vertical displacement telescopic frame, and a fixing device for fixing the lift cylinder, where the fixing device includes four mounting bodies 16, two mounting bodies 16 are respectively fixed to two sides of the cylinder barrel 1, and the mounting bodies 16 are both provided with screw holes; the displacement bracket 5 is fixed on the outer walls of the two mounting bodies 16 at the same side; the guide sleeve 2 is positioned at the top of the cylinder barrel 1, and one end of the piston rod 3 penetrates through the guide sleeve 2 to extend outwards; a dust ring 9, a main wear-resistant belt 14, a first sealing ring 8 and a second sealing ring 10 are respectively arranged at the contact position of the inner side wall of the guide sleeve 2 and the piston rod 3 from top to bottom, the dust ring 9 is positioned at the top of the guide sleeve 2, and a third sealing ring 11 is arranged at the contact position of the outer wall of the guide sleeve 2 and the inner wall of the cylinder barrel 1; an oil outlet joint 17 is arranged at the bottom of the cylinder barrel 1; the top of the piston rod 3 is detachably fixed with a support plate 4, and the piston rod 3 is connected with the vertical displacement telescopic frame through a displacement connecting plate 12; a nylon ring 7 is arranged between the top of the supporting plate 4 and the piston rod 3; the side wall of the supporting plate 4 is provided with an anti-rotation plate 13; the bottom of the piston rod 3 is provided with a limiting ring 14, a combined sealing element 6 is arranged between the outer wall of the limiting ring 14 and the inner wall of the cylinder barrel 1, and an auxiliary wear-resistant belt 15 is arranged between the outer wall of the limiting ring 14 and the inner wall of the cylinder barrel 1; the vertical displacement telescopic frame comprises a displacement support 5 and a telescopic rod 5-1 which is telescopic in the displacement support 5, the displacement support 5 is detachably fixed on the cylinder barrel 1, one end of the telescopic rod 5-1 is detachably fixed on the support plate 4, and the other end of the telescopic rod is positioned in the displacement support 5; the displacement support 5 is provided with a length sensor for detecting the telescopic length of the telescopic rod 5-1, and the telescopic length of the telescopic rod 5-1 is detected through the length sensor, so that the telescopic length of the piston rod 3 in the cylinder barrel 1 is detected; the lifting height of the oil cylinder is convenient to control.

A robot with the lifting oil cylinders is provided, and four lifting oil cylinders are arranged at the bottom of the robot and are fixed through a mounting body 16.

Example 2

In embodiment 2, as shown in fig. 6, the structure of the fixing device in embodiment 1 and the fixing manner of the displacement bracket 5 are changed. The fixing device is a bottom connecting piece 18 and is positioned at the bottom of the cylinder barrel 1; the outer wall of the cylinder barrel 1 is provided with a fixing plate 19 for fixing the displacement support 5, and the fixing plate 19 is fixed on the side wall of the top of the cylinder barrel 1; the displacement bracket 5 is fixed on the fixed plate 19 through bolts; when the lift cylinder is mounted at the bottom of the robot, it is mounted on the robot by means of a bottom connection 18.

Example 3

In embodiment 3, as shown in fig. 7, the position of the auxiliary wear strip 15 in embodiment 1 is changed, and a dust ring 9, a main wear strip 14, a first seal ring 8, a second seal ring 10 and the auxiliary wear strip 15 are respectively arranged at the contact position of the inner side wall of the guide sleeve 2 and the piston rod 3 from top to bottom.

Example 4

In embodiment 4, as shown in fig. 8, the side wall of the support plate 4 is provided with an anti-rotation guide mechanism, the anti-rotation guide mechanism is fixed on the support plate 4 and is located at the opposite side of the vertical displacement telescopic frame, and the anti-rotation guide mechanism comprises a guide chute 20 and a slide rule 13 sliding in the guide chute 20; the guide chute 20 is fixed on the mounting body 16, and the top of the sliding ruler 13 is fixed on the support plate 4.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A lifting cylinder is characterized in that: the cylinder comprises a cylinder barrel (1) and a piston rod (3) which stretches inside the cylinder barrel (1), wherein a main wear-resistant belt (14) and an auxiliary wear-resistant belt (15) which can bear lateral force are arranged between the outer wall of the piston rod (3) and the inner wall of the cylinder barrel (1).

2. The lift cylinder of claim 1, wherein: the top of cylinder (1) is equipped with uide bushing (2), piston rod (3) pass uide bushing (2) and are inside flexible in cylinder (1), piston rod (3) outer wall is equipped with main wear-resisting area (14) and vice wear-resisting area (15) from top to bottom in proper order with uide bushing (2) inner wall contact department.

3. The lift cylinder of claim 1, wherein: the top of cylinder (1) is equipped with uide bushing (2), piston rod (3) pass uide bushing (2) and are inside flexible in cylinder (1), piston rod (3) bottom is equipped with the spacing collar that plays limiting displacement to piston rod (3), piston rod (3) outer wall and uide bushing (2) outer wall contact department are equipped with main wear-resisting area (14), spacing collar outer wall and cylinder (1) inner wall contact department are equipped with vice wear-resisting area (15).

4. The lift cylinder of claim 2 or 3, wherein: the top of the piston rod (3) is provided with a vertical displacement telescopic frame, and the vertical displacement telescopic frame is connected with the top of the piston rod (3) through a displacement connecting plate (12); the vertical displacement telescopic frame comprises a displacement support (5) and a telescopic rod (5-1) which is telescopic in the displacement support (5), the displacement support (5) is movably fixed on the outer wall of the cylinder barrel (1), one end of the telescopic rod (5-1) is movably fixed on the displacement connecting plate (12), and the other end of the telescopic rod is located inside the displacement support (5) and is telescopic in the displacement support (5).

5. The lift cylinder of claim 4, wherein: the outer wall of the cylinder barrel (1) is provided with a fixing device; the fixing device comprises four mounting bodies (16) with screw holes, and two mounting bodies (16) are respectively fixed on two sides of the cylinder barrel (1).

6. The lift cylinder of claim 4, wherein: the outer wall of the cylinder barrel (1) is provided with a fixing device; the fixing device is a bottom connecting piece (18) and is positioned at the bottom of the cylinder barrel.

7. The lift cylinder of claim 4, wherein: the side wall of the top of the piston rod is provided with an anti-rotation guide mechanism, the anti-rotation guide mechanism is fixed at the top of the piston rod and is positioned on the opposite side of the vertical displacement telescopic frame, and the anti-rotation guide mechanism comprises a guide sliding chute (20) and a sliding ruler (13) sliding in the guide sliding chute (20); the guide chute (20) is used for fixing the outer wall of the cylinder barrel, and the top of the sliding ruler (13) is connected with the top of the piston rod.

8. The lift cylinder of claim 2, wherein: the inner side wall of the guide sleeve is provided with a dustproof ring (9), a main wear-resistant belt (14), a first sealing ring (8), a second sealing ring (10) and an auxiliary wear-resistant belt (15) from top to bottom at the contact position of the inner side wall of the guide sleeve and the piston rod respectively, the dustproof ring (9) is located at the top of the guide sleeve, and a third sealing ring (11) is arranged at the contact position of the outer wall of the guide sleeve and the inner wall of the cylinder barrel.

9. The lift cylinder of claim 3, wherein: the guide sleeve inner wall is equipped with dust ring (9), main wear-resisting area (14), first sealing washer (8) and second sealing washer (10) from top to bottom respectively with piston rod outer wall contact department, dust ring (9) are located the top of guide sleeve, guide sleeve outer wall is equipped with third sealing washer (11) with cylinder inner wall contact department, be equipped with built-up seal spare (6) between spacing collar outer wall and the cylinder inner wall.

10. A robot having a lift cylinder as claimed in claim 1, 2 or 3, characterized in that: four lifting oil cylinders are arranged at the bottom of the robot.