Hole check ring mounting mechanism

Abstract

The utility model discloses a hole check ring mounting mechanism which is used for mounting a hole check ring in a check ring groove in a hole body of a target workpiece, and the hole check ring mounting mechanism comprises a tightening outer cylinder, a first opening end and a second opening end are oppositely arranged in the axial direction, and the second opening end is used for being positioned on the periphery of the check ring groove; the tightening inner cylinder is configured to penetrate into the tightening outer cylinder through the first opening end and is used for guiding the hole check ring to move towards the second opening end; from the first opening end to the second opening end, the outer diameters of the tightening inner cylinder and the hole check ring are limited by the tightening outer cylinder and are gradually reduced; the in-place pressure head is movably arranged in the tightening inner cylinder in a penetrating manner and is configured to move towards the second opening end along the axial direction of the tightening inner cylinder under the action of external force so as to push the hole check ring away from the tightening inner cylinder and push the hole check ring out of the second opening end; and the elastic reset mechanism is connected between the in-place pressure head and the tightening inner cylinder. The mounting mechanism for the hole check ring is easy to operate, high in mounting efficiency, high in mounting precision, high in use safety and high in stability.

Description

Technical Field

[0001] The utility model relates to the technical field of assembly equipment, in particular to a retaining ring installation mechanism for a hole. Background Art

[0002] As a key component in a hydraulic system, the performance of a hydraulic cylinder directly impacts the stability and efficiency of the entire system. The installation of retaining rings is a crucial step in the hydraulic cylinder manufacturing process. These retaining rings primarily secure components within the cylinder, ensuring stable operation. These retaining rings consist of a retaining ring body with a circumferential opening. Clamping holes are located on either side of the opening.

[0003] Currently, when installing hole retaining rings, they are mostly installed manually using needle-nose pliers. Specifically, the front ends of the two pliers heads of the needle-nose pliers are ground into pins slightly smaller than the clamping holes, and then the two pins on the pliers heads of the needle-nose pliers are respectively inserted into the two clamping holes of the hole retaining ring. After manually clamping the needle-nose pliers, the diameter of the hole retaining ring is reduced, and then the hole retaining ring is installed into the retaining ring groove in the hole body. However, this manual installation method requires high skills from the operator, and the uneven technical level leads to differences in operating results. Even experienced operators may make inaccurate installations due to improper operation or environmental factors, which will directly affect the quality and reliability of the hydraulic cylinder.

[0004] Secondly, manual installation is inefficient. Each retaining ring requires careful alignment and force application, making the entire production process time-consuming. In large-scale production, this inefficient operation method will significantly slow down production progress and increase production costs.

[0005] Furthermore, manual operation also presents certain safety risks. During the installation of retaining rings, workers need to apply considerable force with circlip pliers, which can lead to injuries due to improper operation. Prolonged and repetitive operation can also negatively impact worker health.

[0006] Furthermore, manual operations are highly repetitive, leading to instability in the production process. Due to varying operator styles and force levels, even retaining rings from the same batch can exhibit varying installation quality. This inconsistency not only impacts hydraulic cylinder performance but can also lead to subsequent failures and maintenance issues. Utility Model Content

[0007] The purpose of the utility model is to provide a hole retaining ring installation mechanism to solve the problems of low efficiency, high installation requirements, low safety and easy instability in the production process of manually installing hole retaining rings using needle-nose pliers in the prior art.

[0008] To solve the above technical problems, the utility model adopts the technical scheme that:

[0009] A hole retaining ring installation mechanism for installing a hole retaining ring in a retaining ring groove in a hole body of a target workpiece, comprising:

[0010] A tightening outer cylinder is provided with a first open end and a second open end in axial opposition, and the second open end is used for positioning outside the retaining ring groove;

[0011] A tightening inner cylinder is configured to pass into the tightening outer cylinder through the first open end and is used for guiding the hole retaining ring to move towards the second open end; the outer diameter of the tightening inner cylinder and the hole retaining ring is gradually reduced from the first open end to the second open end;

[0012] A position head is movably arranged in the tightening inner cylinder and is configured to move along the axial direction of the tightening inner cylinder towards the second open end under the action of an external force, so as to push the hole retaining ring away from the tightening inner cylinder and out of the second open end;

[0013] An elastic reset mechanism is connected between the position head and the tightening inner cylinder.

[0014] In some embodiments, a plurality of inclined wedge tracks for limiting the outer diameter of the tightening inner cylinder and the hole retaining ring are arranged in the tightening outer cylinder in the circumferential direction, and the inclined wedge tracks extend to the first open end and the second open end in the axial direction of the tightening outer cylinder.

[0015] In some embodiments, the inclined wedge track comprises a connected inclined guide block and a positioning block; the thickness of the inclined guide block in the radial direction of the tightening inner cylinder gradually increases from the first open end to the second open end, the thickness of the positioning block in the radial direction of the tightening inner cylinder remains unchanged and is equal to the maximum thickness of the inclined guide block;

[0016] The inner diameter of the second open end defined by the inner edges of a plurality of the positioning blocks matches the outer diameter of the retaining ring groove.

[0017] In some embodiments, the tightening inner cylinder comprises an annular boss and a plurality of variable-diameter bodies arranged in the circumferential direction on the annular boss; the outer diameter of the annular boss is greater than the inner diameter of the first open end, and the length of the variable-diameter body in the axial direction of the tightening inner cylinder is equal to the length of the inclined guide block in the axial direction of the tightening outer cylinder;

[0018] During the movement of the tightening inner cylinder from the first open end to the second open end, a plurality of the variable-diameter bodies are pressed in the radial direction by a plurality of inclined wedge tracks, so that a plurality of the variable-diameter bodies are radially shrunk and close to each other.

[0019] In some embodiments, the variable-diameter body and the inclined guide block are arranged in one-to-one correspondence, and the inclined guide block is located at the middle part corresponding to the variable-diameter body in the circumferential direction of the tightening inner cylinder.

[0020] In some embodiments, the in-place pressing head comprises a pressing cap and a pressing column arranged on the pressing cap, the outer diameter of the pressing cap is greater than the inner diameter of the annular boss, and the outer diameter of the pressing column matches the outer diameter of the check ring groove.

[0021] In some embodiments, the elastic reset mechanism comprises a plurality of reset units arranged at intervals in the circumferential direction between the pressing cap and the annular boss.

[0022] The reset unit comprises a telescopic column connected between the pressing cap and the annular boss, and a spring sleeved on the telescopic column, both ends of the spring abutting against the annular boss and the pressing cap, respectively.

[0023] In some embodiments, the plurality of reset units are arranged at equal intervals.

[0024] In some embodiments, the tightening inner cylinder is provided with a fixing structure for fixing the hole check ring on one end face close to the second open end.

[0025] In some embodiments, the fixing structure is a magnetic member.

[0026] Thanks to the use of the above technical solutions, the present application has the following advantages compared with the prior art:

[0027] The hole check ring mounting mechanism disclosed in the present application makes the installation process of the hole check ring more standardized, convenient and efficient. Specifically, by arranging the tightening outer cylinder to be positioned around the check ring groove, the hole check ring is effectively prevented from deviating during installation, ensuring that it is always in the correct position. The tightening inner cylinder guides the hole check ring to move towards the check ring groove, ensuring that it moves along the correct path during the entire installation process, thereby reducing errors caused by improper alignment. Under the restriction of the tightening outer cylinder, the outer diameters of the tightening inner cylinder and the hole check ring gradually decrease during movement, avoiding installation deviations caused by uneven force during manual operation.

[0028] In addition, the in-place pressing head can push the hole check ring away from the tightening inner cylinder and out of the second open end, so that it smoothly enters the check ring groove, which is simple and has high consistency, significantly reducing the dependence on the skills of the operator. This design improves the installation accuracy of each hole check ring and reduces safety and maintenance problems caused by improper installation. At the same time, by arranging the elastic reset mechanism, the in-place pressing head can be quickly reset, realizing the reuse of the installation mechanism and further improving the installation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is a schematic diagram of the exploded structure of the hole retaining ring installation mechanism in the embodiment of the utility model;

[0031] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the tightening outer cylinder shown.

[0032] Description of reference numerals:

[0033] 1-tightening outer tube; 11-first opening end; 12-second opening end; 2-tightening inner tube; 21-annular boss; 22-diameter reducer; 3-positioning pressure head; 31-pressure cap; 32-pressure column; 4-reset unit; 41-telescopic column; 42-spring; 5-oblique wedge track; 51-oblique guide block; 52-alignment block; 6-fixing structure; 100-hole retaining ring. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific position, or to being constructed or operated in a specific position.

[0037] Furthermore, some of the above terms may be used to express other meanings besides indicating a direction or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0038] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0039] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] See Figure 1 and Figure 2 An embodiment of the present application provides a hole retaining ring installation mechanism for installing a hole retaining ring in a retaining ring groove in a hole body of a target workpiece, the hole retaining ring installation mechanism includes a tightening outer cylinder 1, a tightening inner cylinder 2, a positioning pressure head 3 and an elastic reset mechanism connected between the positioning pressure head 3 and the tightening inner cylinder 2.

[0041] Specifically, the tightening outer cylinder 1 is axially opposed with a first open end 11 and a second open end 12. The second open end 12 is positioned outside the retaining ring groove. The tightening inner cylinder 2 is configured to penetrate into the tightening outer cylinder 1 through the first open end 11, guiding the hole retaining ring 100 toward the second open end 12. From the first open end 11 toward the second open end 12, the outer diameters of the tightening inner cylinder 2 and the hole retaining ring 100 gradually decrease, constrained by the tightening outer cylinder 1.

[0042] In some embodiments, a plurality of inclined wedge tracks 5 for limiting the outer diameter of the tightening inner tube 2 and the hole retaining ring 100 are arranged circumferentially inside the tightening outer tube 1. The inclined wedge tracks 5 extend axially along the tightening outer tube 1 to the first opening end 11 and the second opening end 12.

[0043] In detail, the beveled wedge track 5 includes a connected beveled guide block 51 and an alignment block 52. The thickness of the beveled guide block 51 in the radial direction of the tightening inner cylinder 2 gradually increases from the first open end 11 toward the second open end 12, while the thickness of the alignment block 52 in the radial direction of the tightening inner cylinder 2 remains constant and equal to the maximum thickness of the beveled guide block 51. The inner diameter of the second open end 12, defined by the inner edges of the alignment blocks 52, matches the outer diameter of the retaining ring groove. Of course, in other embodiments, the thickness of the beveled wedge track 5 can be configured to continuously increase in the radial direction of the tightening inner cylinder 2 from the first open end 11 toward the second open end 12.

[0044] In other embodiments, the inner wall of the tightening outer cylinder 1 gradually slopes radially inward from the first open end 11 toward the second open end 12. That is, the inner channel of the tightening outer cylinder 1 is truncated cone-shaped.

[0045] In some embodiments, the tightening inner cylinder 2 includes an annular boss 21 and a plurality of reducers 22 circumferentially spaced apart on the annular boss 21. The outer diameter of the annular boss 21 is greater than the inner diameter of the first open end 11, and the axial length of the reducers 22 relative to the tightening inner cylinder 2 is equal to the axial length of the inclined guide block 51 relative to the tightening outer cylinder 1. As the tightening inner cylinder 2 moves from the first open end 11 toward the second open end 12, the plurality of reducers 22 are radially compressed by the plurality of inclined wedge tracks 5, causing the plurality of reducers 22 to radially contract and converge.

[0046] In some embodiments, the reducer 22 and the inclined guide block 51 are arranged one-to-one, with the inclined guide block 51 located in the middle of the corresponding reducer 22 in the circumferential direction of the tightening inner cylinder 2. This arrangement ensures the stability of the guide, effectively guiding the hole retaining ring 100 to move along the correct path, reduces installation errors caused by structural asymmetry, improves installation accuracy, and makes the overall structure of the installation mechanism compact, convenient for maintenance and operation, and improves work efficiency.

[0047] In other embodiments, the tightening inner cylinder 2 includes an annular boss 21 and a plurality of circumferentially spaced, slidingly arranged arcuate plates on the annular boss 21. The arcuate plates slide radially relative to the tightening inner cylinder 2. Specifically, the arcuate plates are connected to the annular boss 21 via a sliding structure comprising a radially extending groove on the annular boss 21, a slider disposed on the arcuate plate, and an elastic member disposed between the slider and the sidewall of the groove. The plurality of arcuate plates are radially compressed by the plurality of inclined wedge tracks 5, forcing the plurality of arcuate plates to slide toward each other along the groove path. The elastic member, which can be a spring, is used to reset the arcuate plates.

[0048] In some embodiments, a fixing structure 6 for fixing the hole retaining ring 100 is provided on an end surface of the tightening inner cylinder 2 close to the second open end 12 .

[0049] In some embodiments, the fixing structure 6 is a magnetic member to achieve rapid installation of the hole retaining ring 100. In other embodiments, the fixing structure 6 can also be an annular groove provided on the inner peripheral wall of the tightening inner cylinder 2 near the second open end 12.

[0050] The positioning press head 3 is movably arranged in the tightening inner cylinder 2 and is configured to move along the axial direction of the tightening inner cylinder 2 toward the second open end 12 under the action of external force to push the hole retaining ring 100 away from the tightening inner cylinder 2 and out of the second open end 12.

[0051] In some embodiments, the positioning press head 3 includes a pressure cap 31 and a pressure column 32 provided on the pressure cap 31 . The outer diameter of the pressure cap 31 is larger than the inner diameter of the annular boss 21 , and the outer diameter of the pressure column 32 matches the outer diameter of the retaining ring groove.

[0052] In some embodiments, the elastic reset mechanism includes a plurality of reset units 4, which are arranged circumferentially and spaced apart between the pressure cap 31 and the annular boss 21. The reset unit 4 includes a telescopic column 41 connected between the pressure cap 31 and the annular boss 21, and a spring 42 sleeved on the telescopic column 41, with both ends of the spring 42 respectively abutting against the annular boss 21 and the pressure cap 31.

[0053] In some embodiments, several reset units 4 are arranged at equal intervals. This ensures uniform force is applied to all parts of the positioning head 3, preventing the positioning head 3 from tilting and becoming stuck in the tightening inner cylinder 2 due to uneven force. To facilitate positioning of the reset units 4, in some optional embodiments, the pressure cap 31 is square in shape. This is not specifically limited in this application.

[0054] Due to the application of the above technical solution, the beneficial effects of this application compared with the prior art are:

[0055] The hole retaining ring installation mechanism involved in this application makes the hole retaining ring installation process more standardized, convenient, and efficient. Specifically, by positioning the tightening outer cylinder at the periphery of the retaining ring groove, the hole retaining ring is effectively prevented from shifting during installation, ensuring that it is always in the correct position. The tightening inner cylinder guides the hole retaining ring toward the retaining ring groove, ensuring that it moves along the correct path throughout the installation process, thereby reducing errors caused by improper alignment. Under the constraints of the tightening outer cylinder, the outer diameters of the tightening inner cylinder and the hole retaining ring gradually decrease during movement, avoiding installation deviations caused by uneven force during manual operation.

[0056] Furthermore, a retaining head is provided to push the hole retaining ring away from the tightening inner cylinder and out the second open end, allowing it to smoothly enter the retaining ring groove. This design is simple and consistent, significantly reducing reliance on operator skill. This design improves the installation accuracy of each hole retaining ring and reduces safety and maintenance issues caused by improper installation. Furthermore, an elastic reset mechanism allows the retaining head to be quickly reset, enabling reuse of the installation mechanism and further improving installation efficiency.

[0057] Finally, it should be noted that the above are only preferred embodiments of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A hole retaining ring installation mechanism, used to install a hole retaining ring in a retaining ring groove in a hole body of a target workpiece, characterized in that: include: The tightening outer cylinder is provided with a first open end and a second open end in an axial direction opposite to each other, wherein the second open end is used for positioning at the periphery of the retaining ring groove; The tightening inner cylinder is configured to penetrate into the tightening outer cylinder through the first opening end and is used to guide the hole retaining ring to move toward the second opening end; from the first opening end to the second opening end, the outer diameters of the tightening inner cylinder and the hole retaining ring gradually decrease due to the tightening outer cylinder; a positioning press head, movably disposed in the tightening inner cylinder and configured to move along the axial direction of the tightening inner cylinder toward the second open end under the action of an external force, so as to push the hole retaining ring away from the tightening inner cylinder and out of the second open end; The elastic reset mechanism is connected between the positioning pressure head and the tightening inner cylinder.

2. A hole retaining ring installation mechanism according to claim 1, characterized in that: A plurality of inclined wedge tracks for limiting the outer diameters of the tightening inner cylinder and the hole retaining ring are arranged circumferentially inside the tightening outer cylinder. The inclined wedge tracks extend axially along the tightening outer cylinder to the first opening end and the second opening end.

3. A hole retaining ring installation mechanism according to claim 2, characterized in that: The inclined wedge track includes an inclined guide block and an alignment block connected to each other. From the first opening end toward the second opening end, the thickness of the inclined guide block in the radial direction of the tightening inner cylinder gradually increases, while the thickness of the alignment block in the radial direction of the tightening inner cylinder remains unchanged and is equal to the maximum thickness of the inclined guide block. The inner diameter of the second opening end defined by the inner edges of the plurality of alignment blocks matches the outer diameter of the retaining ring groove.

4. A hole retaining ring installation mechanism according to claim 3, characterized in that: The tightening inner cylinder includes an annular boss and a plurality of diameter reducers arranged on the annular boss at intervals along the circumferential direction. The outer diameter of the annular boss is larger than the inner diameter of the first open end. The axial length of the diameter reducers in the tightening inner cylinder is equal to the axial length of the inclined guide block in the tightening outer cylinder. During the movement of the tightening inner cylinder from the first opening end toward the second opening end, the plurality of diameter-changing bodies are radially pressed by the plurality of inclined wedge tracks, so that the plurality of diameter-changing bodies shrink and approach in the radial direction.

5. A hole retaining ring installation mechanism according to claim 4, characterized in that: The diameter reducing body and the oblique guide block are arranged one to one. In the circumferential direction of the tightening inner cylinder, the oblique guide block is located in the middle of the corresponding diameter reducing body.

6. A hole retaining ring installation mechanism according to claim 4, characterized in that: The in-place pressure head includes a pressure cap and a pressure column arranged on the pressure cap. The outer diameter of the pressure cap is larger than the inner diameter of the annular boss, and the outer diameter of the pressure column matches the outer diameter of the retaining ring groove.

7. A hole retaining ring installation mechanism according to claim 6, characterized in that: The elastic reset mechanism includes a plurality of reset units, which are arranged between the pressure cap and the annular boss at intervals along the circumferential direction; The reset unit includes a telescopic column connected between the pressure cap and the annular boss and a spring sleeved on the telescopic column, with two ends of the spring respectively abutting against the annular boss and the pressure cap.

8. A hole retaining ring installation mechanism according to claim 7, characterized in that: The plurality of reset units are arranged at equal intervals.

9. A hole retaining ring installation mechanism according to claim 1, characterized in that: A fixing structure for fixing the hole retaining ring is provided on an end surface of the tightening inner cylinder close to the second opening end.

10. A hole retaining ring installation mechanism according to claim 9, characterized in that: The fixing structure is a magnetic attraction component.

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