CN218030887U - Elastic clamp spring anti-loosening structure, hydraulic cylinder and engineering machinery - Google Patents
Elastic clamp spring anti-loosening structure, hydraulic cylinder and engineering machinery Download PDFInfo
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- CN218030887U CN218030887U CN202222089638.XU CN202222089638U CN218030887U CN 218030887 U CN218030887 U CN 218030887U CN 202222089638 U CN202222089638 U CN 202222089638U CN 218030887 U CN218030887 U CN 218030887U
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Abstract
The utility model discloses an elastic clamp spring anti-loosening structure, a hydraulic cylinder and engineering machinery, which comprises a first part, a second part and an elastic clamp spring; the outer circumferential surface of the first component is provided with an external thread; the outer circumference of the second component is provided with a circle of clamping grooves, the inner circumference is provided with internal threads, and the second component is screwed on the first component through the matching of the internal threads and the external threads; the elastic clamp spring is of a circular integral structure with an opening, one end of the elastic clamp spring is folded back to a straight section towards the circle center, the straight section of the elastic clamp spring is simultaneously inserted into coaxial holes reserved in the second component and the first component, and the arc section of the elastic clamp spring is installed in a clamping groove in the second component. The utility model discloses can be applied to among most of engineering machine tool class hydro-cylinders, the screw thread that has cancelled holding screw twists the structure, has eliminated the not hard up risk of holding screw thread itself, can guarantee that the piston thread can not take place not hard up to simple structure, simple to operate.
Description
Technical Field
The utility model relates to an elasticity jump ring anti loosening structure belongs to pneumatic cylinder technical field.
Background
The piston and the piston rod connected mode of most pneumatic cylinders generally adopt threaded connection structure, and the hydro-cylinder operating mode of different grade type is different, does not thoroughly solve all the time in the not hard up problem trade of piston screw thread. Many types of anti-loosening structures have thus appeared to be suitable for different operating conditions.
As shown in fig. 1 and 2, the most anti-loosening structure currently adopted is a set screw structure, the piston 20 is fixedly connected with the piston rod 30 through threads, the set screw 10 is screwed into a screw hole at a step of the piston 20, a cylindrical portion 40 at the bottom of the set screw 10 penetrates into a small hole drilled in advance in the piston rod 30, and the relative position of the piston 20 and the piston rod 30 after the threads are screwed is fixed to prevent loosening. However, the thread of the set screw 10 itself is at risk of loosening, and when it is loosened and withdrawn, and the bottom cylindrical portion 40 is disengaged from the small hole of the piston rod 30, the thread of the piston 20 may loosen and cause malfunction of the hydraulic cylinder.
SUMMERY OF THE UTILITY MODEL
According to the not enough that prior art exists, the utility model provides an elasticity jump ring anti loosening structure can guarantee that the piston screw thread can not take place not hard up.
The utility model discloses realize according to following technical scheme:
the utility model provides an elastic clamp spring anti-loosening structure in a first aspect, which comprises a first part, a second part and an elastic clamp spring; the outer circumferential surface of the first component is provided with an external thread; the outer circumference of the second component is provided with a circle of clamping grooves, the inner circumference is provided with internal threads, and the second component is screwed on the first component through the matching of the internal threads and the external threads; the elastic clamp spring is characterized in that the whole structure of the elastic clamp spring is in an open circular shape, one end of the elastic clamp spring is folded back towards the circle center to form a straight edge section, the straight edge section of the elastic clamp spring is simultaneously inserted into coaxial holes reserved in the second component and the first component, and the arc section of the elastic clamp spring is installed in a clamping groove in the second component.
In some embodiments, a radial through hole is formed in the clamping groove of the second component, and a radial blind hole is formed in the external thread surface of the first component; the radial through hole in the piston clamping groove is coaxial with the radial blind hole in the piston rod, so that a reserved coaxial hole is formed.
In some embodiments, the upper end of the radial through hole is provided with a conical surface having a guiding effect.
In some embodiments, the straight section of the elastic clamp spring is assembled with the coaxial hole in a clearance fit mode.
The utility model provides a second aspect of the hydraulic cylinder, which comprises a cylinder body, a cylinder bottom and an ear ring, wherein the cylinder bottom and the ear ring are positioned on two sides of the cylinder body; the elastic clamp spring anti-loosening structure is arranged in the cylinder body; wherein the first component is a piston rod and the second component is a piston.
In some embodiments, the piston is provided with a step at one end close to the cylinder bottom, and the clamping groove is arranged on the outer circular surface of the step.
In some embodiments, a guide sleeve is installed in the cylinder body at one end close to the earring, and the piston rod is movably inserted in the guide sleeve.
In some embodiments, the guide sleeve is secured in the cylinder by a gland.
In some embodiments, a seal is mounted between the piston and the facing circumferential surface of the cylinder, between the guide sleeve and the facing circumferential surface of the cylinder, and between the piston rod and the facing circumferential surface of the guide sleeve.
The utility model discloses the third aspect provides an engineering machine tool installs foretell pneumatic cylinder.
The utility model discloses beneficial effect:
1) The structure is twisted into to the screw thread of having cancelled holding screw, has eliminated the not hard up risk of holding screw self screw thread, can guarantee that the piston screw thread can not take place not hard up.
2) Simple structure, convenient installation and low cost.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. It is obvious that the drawings in the following description are only some embodiments and that for a person skilled in the art, other drawings can also be derived from them without inventive effort.
In the drawings:
FIG. 1 is a cross-sectional view of a prior art hydraulic cylinder;
the attached drawings are as follows: 10-screw, 20-piston, 30-piston rod, 40-cylinder part.
FIG. 2 is a schematic view of the piston and piston rod connection of FIG. 1;
fig. 3 is a cross-sectional view of the hydraulic cylinder of the present invention;
FIG. 4 is a schematic view of the piston and piston rod connection of FIG. 3;
FIG. 5 isbase:Sub>A cross-sectional view taken along the line A-A in FIG. 4;
FIG. 6 is an enlarged view of a portion of FIG. 5;
fig. 7 is the schematic view of the elastic clamp spring structure of the present invention.
The attached drawings are as follows: 1-cylinder bottom, 2-piston, 3-piston rod, 4-cylinder body, 5-guide sleeve, 6-gland, 7-earring, 8-elastic snap spring, 21-clamping groove, 22-conical surface, 23-radial through hole, 24-step, 31-radial blind hole and 81-straight edge section.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solution in the embodiments, and the following embodiments are used to illustrate the present invention, but do not limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model discloses an elastic clamp spring anti-loosening structure, which comprises a first part, a second part and an elastic clamp spring; the outer circumference of the first component is provided with an external thread; the outer circumference of the second component is provided with a circle of clamping grooves, the inner circumference is provided with internal threads, and the second component is screwed on the first component through the matching of the internal threads and the external threads; the elastic clamp spring is characterized in that the whole structure of the elastic clamp spring is in an open circular shape, one end of the elastic clamp spring is folded back towards the circle center to form a straight edge section, the straight edge section of the elastic clamp spring is simultaneously inserted into coaxial holes reserved in the second component and the first component, and the arc section of the elastic clamp spring is installed in a clamping groove in the second component.
Further scheme: a radial through hole is formed in the clamping groove of the second component, and a radial blind hole is formed in the external thread surface of the first component; the radial through hole in the piston clamping groove is coaxial with the radial blind hole in the piston rod, so that a reserved coaxial hole is formed.
Further scheme: the upper end part of the radial through hole is provided with a conical surface with a guiding function.
Further scheme: the straight edge section of the elastic clamp spring is assembled with the coaxial hole in a clearance fit mode.
An application embodiment of the anti-loosening structure of the elastic clamp spring is given as follows:
as shown in fig. 3, 4, 5, 6, and 7, a hydraulic cylinder includes a cylinder bottom 1, a piston 2, a piston rod 3, a cylinder body 4, a guide sleeve 5, a gland 6, an ear ring 7, and an elastic clamp spring 8. The cylinder bottom 1 and the ear rings 7 are located on two sides of the cylinder body 4, the piston 2 and the piston rod 3 are located in the cylinder body 4, the guide sleeve 5 is installed at one end, close to the ear rings 7, in the cylinder body 4, the piston rod 3 is movably inserted into the guide sleeve 5, the guide sleeve 5 is fixed in the cylinder body 4 through the pressing cover 6, the cylinder bottom 1 is connected with the cylinder body 4, and the ear rings 7 are connected with the piston rod 3.
Further scheme: sealing elements are arranged between the circumferential surfaces of the piston 2 and the cylinder 4, between the circumferential surfaces of the guide sleeve 5 and the cylinder 4, and between the circumferential surfaces of the piston rod 3 and the guide sleeve 5.
A preferred embodiment of the connection of the elastic clamp spring with the piston and the piston rod is given below:
with continued reference to fig. 4, 5, 6, and 7, the piston 2 is screwed to the external thread at the end of the piston rod 3 through the internal thread, the piston 2 is turned with a locking groove 21 at the outer circumferential surface of the step 24, and a radial through hole 23 is drilled in the locking groove 21. A radial blind hole 31 is drilled at the external thread at the tail end of the piston rod 3, and the radial through hole 23 is coaxial with the radial blind hole 31. The shape structure of the elastic clamp spring 8 is an open circle, and one end of the elastic clamp spring is folded back to a straight section 81 towards the circle center. The straight edge section 81 of the elastic clamp spring 8 is inserted into the radial through hole 23 of the piston 2 and extends into the radial blind hole 31 of the piston rod 3, and the rest part of the elastic clamp spring 8 is arranged in the clamping groove 21 of the piston 2.
Further scheme: the upper end part of the radial through hole 23 of the piston 2 is provided with a 60-degree conical surface 22, so that the conical surface can be guided in when the clamp spring is inserted, and quick installation is realized.
Further scheme: after the straight edge section 81 of the elastic clamp spring 8 is inserted into the radial through hole 23 of the piston 2 and the radial blind hole 31 of the piston rod 3, the gap between the diameter and the aperture of the elastic clamp spring is 0.5mm, so that the installation is convenient, and the anti-loosening performance is reliable.
The specific operation process comprises the following steps: after the piston 2 and the piston rod 3 are screwed up through the threads, the radial blind hole 31 at the thread position of the piston rod 3 is drilled along the radial through hole 23 of the piston 2 by using a portable electric hand drill, then the piston 2 is unscrewed to clean scrap iron and burrs, and the piston 2 is screwed into the threads of the piston rod 3 again. The straight edge section 81 folded back by the elastic clamp spring 8 is inserted into the radial blind hole 31 drilled in the piston rod 3 through the radial through hole 23, and finally the rest outer ring part of the elastic clamp spring 8 is tightly clamped in the clamping groove 21 on the step excircle of the piston 2.
The utility model discloses can be applied to among most of engineering machine tool class hydro-cylinders, the screw thread that has cancelled holding screw twists the structure, has eliminated the not hard up risk of holding screw thread itself, can guarantee that the piston thread can not take place not hard up to simple structure, simple to operate.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments, not others, combinations of features of different embodiments are also meant to be within the scope of the invention and form different embodiments. For example, in the above embodiments, those skilled in the art can use the combination according to the known technical solutions and technical problems to be solved by the present application.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the preferred embodiment, it is not intended to limit the present invention, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention will still fall within the scope of the present invention.
Claims (10)
1. The utility model provides an elasticity jump ring anti loosening structure which characterized in that includes:
a first member having an external thread formed on an outer circumferential surface thereof;
the outer circumferential surface of the second component is provided with a circle of clamping grooves, the inner circumferential surface of the second component is provided with internal threads, and the second component is screwed on the first component through the matching of the internal threads and the external threads;
the elastic clamp spring is of a circular integral structure with an opening, one end of the elastic clamp spring is folded back towards the circle center to form a straight edge section, the straight edge section of the elastic clamp spring is simultaneously inserted into coaxial holes reserved in the second component and the first component, and the arc section of the elastic clamp spring is installed in a clamping groove in the second component.
2. The elasticity jump ring anti loosening structure of claim 1, its characterized in that:
a radial through hole is formed in the clamping groove of the second component, and a radial blind hole is formed in the external thread surface of the first component;
the radial through hole is coaxial with the radial blind hole, so that a reserved coaxial hole is formed.
3. The elasticity jump ring anti loosening structure of claim 2, its characterized in that:
the upper end part of the radial through hole is provided with a conical surface with a guiding function.
4. The elasticity jump ring anti loosening structure of claim 1, its characterized in that:
the straight edge section of the elastic clamp spring is assembled with the coaxial hole in a clearance fit mode.
5. A hydraulic cylinder comprises a cylinder body, a cylinder bottom and lug rings, wherein the cylinder bottom and the lug rings are positioned on two sides of the cylinder body; the method is characterized in that:
an elastic clamp spring anti-loose structure of any one of claims 1 to 4 is installed in the cylinder body;
wherein the first component is a piston rod and the second component is a piston.
6. A hydraulic cylinder according to claim 5, wherein:
the piston is provided with a step at one end close to the cylinder bottom, and the clamping groove is arranged on the outer circular surface of the step.
7. A hydraulic cylinder according to claim 5, wherein:
the cylinder body is internally provided with a guide sleeve at one end close to the earring, and the piston rod is movably inserted in the guide sleeve.
8. A hydraulic cylinder according to claim 7, wherein:
the guide sleeve is fixed in the cylinder body through a gland.
9. A hydraulic cylinder according to claim 7, wherein:
sealing elements are arranged between the circumferential surfaces of the piston and the cylinder body in opposite directions, between the circumferential surfaces of the guide sleeve and the cylinder body in opposite directions and between the circumferential surfaces of the piston rod and the guide sleeve in opposite directions.
10. A construction machine characterized in that:
a hydraulic cylinder according to any one of claims 5 to 9 is mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222089638.XU CN218030887U (en) | 2022-08-10 | 2022-08-10 | Elastic clamp spring anti-loosening structure, hydraulic cylinder and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222089638.XU CN218030887U (en) | 2022-08-10 | 2022-08-10 | Elastic clamp spring anti-loosening structure, hydraulic cylinder and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218030887U true CN218030887U (en) | 2022-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222089638.XU Active CN218030887U (en) | 2022-08-10 | 2022-08-10 | Elastic clamp spring anti-loosening structure, hydraulic cylinder and engineering machinery |
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| Country | Link |
|---|---|
| CN (1) | CN218030887U (en) |
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- 2022-08-10 CN CN202222089638.XU patent/CN218030887U/en active Active
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