Enhanced hydraulic motor snap ring structure and hydraulic motor applying same

Abstract

The utility model discloses an enhanced hydraulic motor snap ring structure and a hydraulic motor applying the same, and aims to improve the strength and impact resistance of a snap ring, keep the original inner and outer diameter mounting sizes unchanged, and ensure the compatibility with existing hydraulic motor parts. The snap ring structure comprises a snap ring body and a reinforcing part, the reinforcing part is arranged on one side of the snap ring body in a protruding mode, the reinforcing part and the snap ring body form an L-shaped structure, and the reinforcing part is connected with the snap ring body in an integrated forming or fixed connecting mode. The shape and size of the reinforcement are precisely calculated to maximize the reinforcement effect while avoiding an increase in unnecessary weight and volume. The clamping ring body and the reinforcing part are made of high-strength alloy materials such as stainless steel, titanium alloy or special alloy steel, so that the bearing capacity and the anti-fatigue performance of the clamping ring are improved. The clamping ring structure has the advantages of being simple in structure, high in strength, good in impact resistance, high in compatibility, light in weight design and the like, and meets the fixing and connecting requirements of various hydraulic motors.

Description

Technical Field

[0001] This application relates to the technical field of hydraulic transmission, specifically an enhanced snap ring structure for a hydraulic motor, aiming to improve the strength and impact resistance of the snap ring through structural optimization to ensure the stable operation of the hydraulic motor under harsh working conditions. Background Art

[0002] A hydraulic motor is a device that converts hydraulic energy into mechanical energy. As an important component in a hydraulic system, its performance directly affects the efficiency and reliability of the entire system. The working principle of a hydraulic motor is similar to that of a hydraulic cylinder, but the difference is that a hydraulic motor converts pressure energy into rotational motion instead of linear motion. The specific working principle is as follows: 1. Hydraulic oil entry: The hydraulic oil enters the cylinder of the hydraulic motor through a control valve; 2. Pressure difference drive: A pressure difference is formed on both sides of the cylinder, and this pressure difference drives the rotor or plunger of the motor to start rotating; 3. Energy conversion: The rotational motion is transmitted to the required device or machine through the drive shaft, thus realizing the conversion of hydraulic energy into mechanical energy. The working principle of the hydraulic motor enables it to produce high torque and high rotational speed outputs, so it is widely used in applications that require a large amount of power and continuous rotational motion.

[0003] As a key connecting component in a hydraulic motor, the snap ring is used to fix the connecting rod to the crankshaft, enabling the connecting rod to rotate with the crankshaft and playing an important role in fixing, sealing, and transmitting torque. Traditional snap ring designs are often limited by materials or structures and are prone to deformation or wear when facing a high-strength and high-impact working environment during long-term use and under impact loads, thus affecting the performance and lifespan of the hydraulic motor. Therefore, it is necessary to improve the snap ring structure to enhance its strength and impact resistance. Summary of the Invention

[0004] The purpose of the present invention is to provide an enhanced hydraulic motor snap ring structure and a hydraulic motor applying the same. By adding a strengthening part to the snap ring body to form an L-shaped or T-shaped structure, the overall strength and impact resistance of the snap ring are effectively enhanced, while maintaining the original installation dimensions of the outer diameter and inner diameter to ensure compatibility with existing hydraulic motor components.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] In the first aspect, the present invention provides an enhanced hydraulic motor snap ring structure, and this snap ring structure adopts the following technical solutions:

[0007] 1. Structural design, including:

[0008] Snap ring body: Made of high-strength alloy material and maintaining the original design dimensions of the inner and outer diameters to ensure precise fit with components such as the connecting rod and housing of the hydraulic motor;

[0009] Reinforcement part: A reinforcement part is formed on one or both sides of the snap ring body. The reinforcement part extends outward along the axial direction of the snap ring body from the outer edge of the snap ring body, forming an L-shaped or T-shaped structure with the snap ring body. The shape and size of the reinforcement part are precisely calculated to maximize the strengthening effect while avoiding adding unnecessary weight and volume.

[0010] Transition region: A smooth transition region is designed at the connection between the reinforcement part and the snap ring body to reduce stress concentration and improve the overall strength and durability of the snap ring structure.

[0011] Wherein, the snap ring body has a preset outer diameter and inner diameter for mating with the connecting rod and the housing component of the hydraulic motor; the reinforcement part protrudes from one or both sides of the snap ring body, forming an L-shaped or T-shaped structure with the snap ring body. The reinforcement part is connected to the outer edge of the snap ring body and extends outward along the axial direction of the snap ring body, for improving the overall strength and impact resistance of the snap ring without changing the installation dimensions of the outer diameter and inner diameter of the snap ring body; when the snap ring structure is in the working state, a gap is formed between the reinforcement part and the connecting rod, and the size of the gap is 30 - 50 silk, and this gap is ensured by precision machining and measurement.

[0012] Furthermore, the reinforcement part and the snap ring body are connected by an integral molding process.

[0013] Furthermore, the extension width of the reinforcement part is 5 - 10 mm.

[0014] Furthermore, the snap ring structure further includes a transition region for optimizing stress distribution. The transition region is located at the connection between the reinforcement part and the snap ring body and is designed as a smooth curved surface or an inclined surface.

[0015] 2. Material selection:

[0016] The snap ring body, the reinforcement part, and the transition region are all made of high-strength and high-toughness alloy materials, such as stainless steel, titanium alloy, or special alloy steel, to improve the load-bearing capacity and fatigue resistance of the snap ring structure.

[0017] Furthermore, the surface of the reinforcement part is subjected to hardening treatment or plating treatment.

[0018] 3. Manufacturing process:

[0019] Advanced manufacturing processes such as precision casting, forging, or powder metallurgy are adopted to ensure the precision of the snap ring structure and the full play of material properties.

[0020] The connection method between the reinforcement part and the snap ring body needs to be strictly tested to ensure firm connection and no risk of loosening.

[0021] 4. Performance improvement:

[0022] 1. The snap ring structure is optimized through finite element analysis (FEA) to ensure that the strengthening part can effectively disperse stress and improve the impact resistance and fatigue life of the snap ring.

[0023] 2. Practical application tests show that the snap ring structure of the present invention can withstand higher impact loads under the same conditions compared with the traditional design, and the deformation amount is significantly reduced.

[0024] In the second aspect, the present application provides a hydraulic motor, which includes the enhanced snap ring structure of the first aspect above.

[0025] The beneficial effects of the present application are:

[0026] 1. Strength improvement: The strengthening part of the L-shaped / T-shaped structure significantly enhances the radial and axial load-bearing capacities of the snap ring, improving the overall stability and safety of the hydraulic motor.

[0027] 2. Good compatibility: Keep the original assembly dimensions unchanged, without the need to modify other components of the hydraulic motor, and it is easy to install and maintain.

[0028] 3. Enhanced impact resistance: Effectively resist impacts and vibrations during operation, and extend the service life of the hydraulic motor.

[0029] 4. Lightweight design: While ensuring strength, optimize the material and structure design to minimize the weight of the snap ring and improve the energy efficiency of the hydraulic motor. Description of the Drawings

[0030] Figure 1 Shows a schematic structural diagram of a traditional snap ring structure;

[0031] Figure 2 Shows an assembly schematic diagram of a traditional snap ring structure;

[0032] Figure 3 According to some embodiments of the present application, shows a schematic structural diagram of an L-shaped snap ring structure;

[0033] Figure 4 According to some embodiments of the present application, shows an assembly schematic diagram of an L-shaped snap ring structure;

[0034] Figure 5 According to some embodiments of the present application, shows a schematic structural diagram of a T-shaped snap ring structure;

[0035] Figure 6 According to some embodiments of the present application, shows Figure 5 a partial enlarged view of part A in Detailed Description of the Invention

[0036] The following will, in conjunction with the accompanying drawings, provide a more detailed description of the technical features and advantages of the present application, so that the advantages and features of the present application can be more easily understood by those skilled in the art, thereby making the scope of protection of the present invention more clearly defined.

[0037] It should be noted that in the description of the present application, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0038] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the importance of the indicated technical features.

[0039] In addition, it should also be noted that in the description of the present application, unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Please refer to Figures 1-2 , which is a schematic structural diagram of a conventional snap ring structure 1' for a hydraulic motor. A snap ring installation groove 41 is provided on the connecting rod 4, and the annular snap ring 1' is clamped in the above-mentioned snap ring installation groove 41. The connecting rod 4 is fixed to the eccentric shaft portion of the crankshaft 6 through the snap ring 1'.

[0041] Embodiment 1: Integrally formed L-shaped enhanced hydraulic motor snap ring structure

[0042] Please refer to Figures 3-4 , this embodiment provides an enhanced hydraulic motor snap ring structure, which includes a snap ring body 1 and a reinforcing portion 2. The snap ring body 1 is made of a high-strength alloy material 20CrMnTi and has a preset outer diameter and inner diameter to ensure precise fit with components such as the connecting rod 4 and the housing 5 of the hydraulic motor. The reinforcing portion 2 protrudes from one side of the outer edge of the snap ring body 1 and is connected to the snap ring body 1 through an integral forming process. The reinforcing portion 2 is connected to the outer edge of the snap ring body 1 and extends along the axial direction of the snap ring body 1, forming an L-shaped structure with the snap ring body 1. This design not only enhances the radial and axial load-bearing capacities of the snap ring structure, but also improves its impact resistance, and at the same time can maintain the original outer diameter and inner diameter assembly dimensions of the snap ring structure without modifying other components of the hydraulic motor.

[0043] A smooth transition region 3 is designed between the snap ring body 1 and the strengthening portion 2. The transition region 3 can be designed as a smooth curved surface or an inclined surface to reduce stress concentration and improve the overall strength and durability of the snap ring structure.

[0044] To further increase strength and impact resistance, the surfaces of the snap ring body 1, the strengthening portion 2, and the transition region 3 are subjected to carburizing and quenching heat treatment. The carburizing depth is 0.5 - 0.8 mm, the surface hardness is HRC55 - 58, and the core hardness is HRC40 - 45. At the same time, the edges of the snap ring body 1 and the strengthening portion 2 are chamfered.

[0045] In the specific manufacturing process, first, a suitable alloy material is selected, and then the snap ring body 1 and the strengthening portion 2 are integrally formed by precision casting or forging according to the design requirements to ensure the integrity and strength of the snap ring body 1 and the strengthening portion 2. Alternatively, in some embodiments, first, the annular snap ring body 1 is machined, and then the strengthening portion 2 is formed by bending the edge. The size and shape of the strengthening portion 2 are precisely calculated to maximize the strengthening effect while avoiding adding unnecessary weight and volume. In addition, the snap ring structure is optimized by finite element analysis (FEA) to ensure that the strengthening portion 2 can effectively disperse stress and improve the impact resistance and fatigue life of the snap ring.

[0046] To facilitate installation, the extending width W of the strengthening portion 2 can be flush with the edge of the connecting rod 4. After the snap ring body 1 is inserted into the snap ring installation groove 41 of the connecting rod 4, a gap D of 30 - 50 filaments is designed between the strengthening portion 2 and the connecting rod 4.

[0047] Embodiment 2: Integrally formed T-shaped enhanced hydraulic motor snap ring structure

[0048] Please refer to Figures 5-6 , this embodiment provides an enhanced hydraulic motor snap ring structure, including a snap ring body 1, a first strengthening portion 201, and a second strengthening portion 202. The snap ring body 1 is made of a high-strength alloy material 20CrMnTi and has a preset outer diameter and inner diameter to ensure precise fit with components such as the connecting rod and the housing of the hydraulic motor. The first strengthening portion 201 and the second strengthening portion 202 are respectively convexly provided on both sides of the outer edge of the snap ring body 1 and are connected to the snap ring body 1 through an integral forming process, forming a T-shaped structure with the snap ring body 1.

[0049] Embodiment 3: Enhanced hydraulic motor snap ring structure with welded connection

[0050] This embodiment provides an enhanced hydraulic motor snap ring structure using welded connection. The snap ring body 1 and the reinforcement part 2 are also made of high-strength alloy materials, but the connection methods are different. The reinforcement part 2 is connected to the snap ring body 1 through precision welding. In this way, the existing snap ring structure can be reprocessed to form an enhanced hydraulic motor snap ring structure, which improves the overall strength and durability of the snap ring structure while reducing the manufacturing cost.

[0051] In the specific manufacturing process, first, the reinforcement part 2 is manufactured, and then the reinforcement part 2 is connected to the existing snap ring body 1 by means of precision welding. During welding, it is necessary to ensure the weld quality, avoid defects such as cracks and slag inclusions, and ensure a firm connection. In addition, the connection part between the reinforcement part 2 and the snap ring body 1 is processed to form a smooth transition area 3, which can be designed as a smooth curved surface or inclined surface to further reduce stress concentration and improve the overall strength and durability of the structure.

[0052] Example 4: Lightweight Design and Optimization

[0053] Based on Examples 1 - 3, this example further proposes a lightweight design and optimization solution. By optimizing the shape and size of the reinforcement part 2 and selecting a lighter but higher-strength alloy material, the weight of the snap ring can be reduced while maintaining the strength and impact resistance of the snap ring structure, thereby improving the energy efficiency of the hydraulic motor.

[0054] In the specific implementation process, tools such as computer-aided design (CAD) and finite element analysis (FEA) can be used to precisely design and optimize the snap ring structure. Through multiple iterations and verifications, the optimal shape and size of the reinforcement part and the most suitable alloy material are found to ensure lightweight design while meeting the requirements of strength and impact resistance of the snap ring structure.

[0055] Example 5: A Hydraulic Motor

[0056] Based on Examples 1 - 5, this example provides a hydraulic motor that adopts the enhanced snap ring structure of the above Examples 1 - 5. By adopting the structure-enhanced snap ring structure, the impact resistance and durability of the hydraulic motor are effectively improved.

[0057] In the description of this specification, the description referring to terms such as "some embodiments", "some examples", "exemplarily", "example", "preferably", or "further" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0058] The above are only the embodiments of the present application, and do not thus limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present application.

Claims

1. An enhanced snap ring structure for a hydraulic motor, characterized in that, Comprising: A snap ring body (1), which is made of a high-strength alloy material and has a preset outer diameter and inner diameter for mating with the connecting rod and the housing component of a hydraulic motor; A reinforcing portion (2) protruding from one or both sides of the snap ring body (1) to form an L-shaped or T-shaped structure with the snap ring body (1). The reinforcing portion (2) is connected to the outer edge of the snap ring body (1) and extends axially outward along the snap ring body (1) to improve the overall strength and impact resistance of the snap ring without changing the installation dimensions of the outer diameter and inner diameter of the snap ring body (1). In the working state of the snap ring structure, a gap is formed between the reinforcing portion (2) and the connecting rod, and the size of the gap is 30 - 50 silk, which is ensured by precision machining and measurement.

2. The enhanced hydraulic motor snap ring structure according to claim 1, wherein The reinforcing portion (2) and the snap ring body (1) are connected by an integral molding process.

3. The enhanced hydraulic motor snap ring structure according to claim 2, wherein The extending width of the reinforcing portion (2) is 5 - 10 mm.

4. The enhanced hydraulic motor snap ring structure according to claim 3, characterized in that The snap ring structure further includes a transition region (3) for optimizing stress distribution, and the transition region (3) is located at the connection between the reinforcing portion (2) and the snap ring body (1), and is designed as a smooth curved surface or an inclined surface.

5. The enhanced hydraulic motor snap ring structure according to claim 1, wherein, The surface of the reinforcing portion (2) is subjected to a hardening treatment or a plating treatment.

6. A hydraulic motor, characterized in that, Including the enhanced hydraulic motor snap ring structure according to any one of claims 1 - 5.

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