Integrated hydraulic cylinder end cover and hydraulic cylinder

Abstract

The utility model provides an integrated hydraulic cylinder end cover and a hydraulic cylinder, and relates to the related technical field of hydraulic cylinders, the integrated hydraulic cylinder end cover comprises an end cover framework and rubber coating, the end cover framework is provided with a piston rod mounting hole, a sealing lip, a dustproof ring, a limiting clamping groove, a sealing flange and a hollowed-out structure, the structure can be integrally formed during production of the end cover framework and can also be machined and formed on the end cover framework in the later period, additional parts are not needed, the sealing lip and the dustproof ring are both arranged on the hole wall of the piston rod mounting hole, and the limiting clamping groove and the sealing flange are both arranged on the outer circle of the end cover framework. The end cover framework is arranged, the sealing lip, the dustproof ring, the limiting clamping groove and the sealing flange are formed on the end cover framework, then rubber coating is conducted, the integral design of the end cover is achieved, the assembling step of a traditional end cover is omitted, the production efficiency is high, the hollowed-out structure is arranged, the material of the end cover is saved, the weight can be reduced, and meanwhile the cost can be saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hydraulic cylinder, especially an integrated hydraulic cylinder end cover and hydraulic cylinder. BACKGROUND

[0002] The position where the piston rod needs to extend of the hydraulic cylinder is the end cover, a sealing ring needs to be installed on the end cover, the sealing ring is used for sealing the end cover and the inner wall of the hydraulic cylinder barrel, the inner hole of the end cover needs to be installed with an oil seal, the oil seal is used for sealing between the piston rod and the end cover, and a dustproof ring also needs to be installed at the position where the piston rod extends, due to the large number of parts, the overall installation process is complex, the production efficiency is affected, and the volume and thickness are relatively large, the product weight is increased, the on-site installation efficiency of the hydraulic cylinder is affected, and the present application is proposed in view of the above defects. SUMMARY

[0003] The utility model discloses an integrated hydraulic cylinder end cover and hydraulic cylinder, which solves the problems of complex installation process and large product weight of the traditional hydraulic cylinder end cover.

[0004] To solve the above problems, the utility model provides an integrated hydraulic cylinder end cover, which comprises an end cover framework and a rubber coating, the end cover framework is provided with a piston rod mounting hole, a sealing lip, a dustproof ring, a limiting slot, a sealing flange and a hollow structure, the above-mentioned structures can be integrally formed during the production of the end cover framework or can be formed on the end cover framework later, without the need for additional parts, the sealing lip and the dustproof ring are arranged on the hole wall of the piston rod mounting hole, the limiting slot and the sealing flange are arranged on the outer circle of the end cover framework, the hollow structure is used to reduce the weight of the end cover framework, and the rubber coating is coated on the surface of the end cover framework.

[0005] According to an embodiment of the utility model, the end cover framework is further provided with a sealing lip boss, the sealing lip boss is used to support the sealing lip and make the sealing lip have a certain elastic deformation effect.

[0006] According to an embodiment of the utility model, the cross section of the sealing lip is triangular, and the head position is provided with a round corner transition to reduce stress concentration.

[0007] According to an embodiment of the utility model, the sealing lip and the sealing flange are arranged in several groups, such as two groups.

[0008] According to an embodiment of the utility model, the hollow structure is arranged in several groups.

[0009] According to an embodiment of the utility model, the several hollow structures are evenly arranged around the piston rod mounting hole.

[0010] According to an embodiment of the utility model, the contour of the hollow structure adopts round corner transition, its shape can be quadrilateral, the width of one end close to the piston rod mounting hole can be set to be less than the width of the other end, and the strength of the position of the piston rod mounting hole is ensured.

[0011] According to an embodiment of the utility model, the end cover framework is a high molecular material, such as POM, POK, PC, ABS, or the like.

[0012] According to an embodiment of the utility model, the rubber coating is a rubber material.

[0013] A hydraulic cylinder comprises the integrated hydraulic cylinder end cover.

[0014] The utility model discloses a beneficial effect is, through setting up end cover framework, forms sealing lip, dustproof ring, spacing slot and sealing flange on end cover framework, then carries out rubber coating, realizes end cover integral design, spares the assembly step of traditional end cover, and production efficiency is high, through setting up hollow structure, saves end cover material, can reduce weight simultaneously still can save the cost. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model is further illustrated below in connection with the drawings and examples.

[0016] Figure 1 It is the section view of end cover framework;

[0017] Figure 2 It is the overall structure schematic view of end cover framework;

[0018] Figure 3 It is the overall structure schematic view of integrated hydraulic cylinder end cover;

[0019] Figure 4 It is the cross section schematic view of integrated hydraulic cylinder end cover;

[0020] Figure 5 It is the section schematic view of sealing lip. DETAILED DESCRIPTION

[0021] The following description is only used to disclose the utility model to enable the person skilled in the art to implement the utility model. The examples in the following description are only as examples, and the person skilled in the art can think of other obvious modifications. The basic principles of the utility model defined in the following description can be applied to other implementation schemes, modification schemes, improvement schemes, equivalent schemes and other schemes without departing from the spirit and scope of the utility model.

[0022] Integrated hydraulic cylinder end cover, including end cover framework 1 and rubber coating 9, end cover framework 1 is high molecular material, such as POM, POK, PC, ABS or the like plastic material, and rubber coating 9 is a rubber material.

[0023] As Figure 1 , the end cover framework 1 is provided with a piston rod mounting hole 5, a sealing lip 3, a dustproof ring 4, a limiting clamping groove 7, a sealing flange 2 and a hollow structure 6, which can be integrally formed during production of the end cover framework 1 or processed on the end cover framework 1 later, without the need to additionally increase parts.

[0024] Optionally, the sealing lip 3 and the sealing flange 2 are each provided with several groups, such as two groups.

[0025] The piston rod mounting hole 5 is used for mounting a piston rod.

[0026] The sealing lip 3 and the dustproof ring 4 are each arranged at a hole wall of the piston rod mounting hole 5, the sealing lip 3 is used for sealing between the piston rod and the end cover, and the dustproof ring 4 is used for preventing external dust from entering the end cover.

[0027] As Figure 4 , the cross section of the sealing lip 3 is triangular, and a round corner transition is arranged at a head position of the sealing lip 3, so as to reduce stress concentration.

[0028] The end cover framework 1 is further provided with a sealing lip boss 8, the sealing lip boss 8 is used for supporting the sealing lip 3, and simultaneously makes the sealing lip have a certain elastic deformation effect.

[0029] The limiting clamping groove 7 and the sealing flange 2 are each arranged on an outer circle of the end cover framework 1, the sealing flange 2 is used for sealing between the end cover and an inner wall of a cylinder barrel of a hydraulic cylinder, and the limiting clamping groove 7 is used for mounting and fixing the end cover, the cylinder barrel is punched from the outside, so that the cylinder barrel is deformed, and after deformation, the cylinder barrel is pressed into the limiting clamping groove, so as to realize fixing of the end cover.

[0030] As Figure 2 , the hollow structure 6 can reduce the amount of plastic, and is used for reducing the weight of the end cover framework 1, further, a plurality of hollow structures 6 are uniformly arranged around the piston rod mounting hole 5, and the overall arrangement mode is annular, the contour of the hollow structure 6 adopts a round corner transition, so as to reduce stress concentration, the shape can be quadrilateral or other shapes, and the width of one end close to the piston rod mounting hole 5 can be arranged to be smaller than the width of the other end, so as to ensure the strength of the position of the piston rod mounting hole 5.

[0031] As Figure 3 , the encapsulation 9 is covered on the surface of the end cover framework 1, and only after encapsulation, the sealing lip 3, the sealing flange 2 and the dustproof ring 4 have elasticity, so as to realize a sealing effect.

[0032] The above-mentioned end cover is integrally designed as a whole, light in weight, and all functions are realized at one time, so as to solve the problem of low assembly efficiency of a traditional end cover.

[0033] A hydraulic cylinder comprises the above-mentioned integrated hydraulic cylinder end cover.

[0034] It will be understood by those skilled in the art that the above description and the embodiments of the present application shown in the drawings are only examples and do not limit the present application. The purpose of the present application has been completely and effectively achieved. The function and structural principle of the present application have been demonstrated and explained in the embodiments, and the embodiments of the present application can have any deformation and modification without departing from the principle.

Claims

1. The integrated hydraulic cylinder end cover is characterized by: The invention comprises an end cover frame (1) and a rubber coating (9), wherein the end cover frame (1) is provided with a piston rod mounting hole (5), a sealing lip (3), a dust ring (4), a limiting groove (7), a sealing flange (2) and a hollow structure (6), wherein the sealing lip (3) and the dust ring (4) are both arranged at the hole wall of the piston rod mounting hole (5), the limiting groove (7) and the sealing flange (2) are both arranged on the outer circle of the end cover frame (1), the hollow structure (6) is used to reduce the weight of the end cover frame (1), and the rubber coating (9) is coated on the end cover frame (1).

2. The integrated hydraulic cylinder end cover according to claim 1, characterized in that: The end cover frame (1) is further provided with a sealing lip boss (8), and the sealing lip boss (8) is used to support the sealing lip (3).

3. The integrated hydraulic cylinder end cover according to claim 2, characterized in that: The cross section of the sealing lip (3) is triangular, and a rounded transition is provided at the head position.

4. The integrated hydraulic cylinder end cover according to any one of claims 1 to 3, characterized in that: The sealing lips (3) and the sealing flanges (2) are provided in several groups.

5. The integrated hydraulic cylinder end cover according to any one of claims 1 to 3, characterized in that: The hollowed-out structures (6) are provided in several groups.

6. The integrated hydraulic cylinder end cover according to claim 5, characterized in that: Several of the hollow structures (6) are evenly arranged around the piston rod mounting hole (5).

7. The integrated hydraulic cylinder end cover according to claim 6, characterized in that: The outline of the hollow structure (6) adopts rounded corner transition.

8. The integrated hydraulic cylinder end cover according to claim 6 or 7, characterized in that: The end cover skeleton (1) is made of polymer material.

9. The integrated hydraulic cylinder end cover according to claim 8, characterized in that: The rubber bag (9) is made of rubber.

10. A hydraulic cylinder, characterized in that: The invention comprises the integrated hydraulic cylinder end cover according to any one of claims 1 to 9.

Images