Mandrel sleeve assembly with quick release function

Abstract

The utility model belongs to the technical field of inner step forge piece forming, and particularly relates to a saddle sleeve assembly with a quick release function, which comprises two coaxial and symmetrical saddle sleeves, a working cavity is arranged in each saddle sleeve, the inner diameter of the working cavity close to the bottom area is smaller than that of the front area of the working cavity, and a connecting cavity is formed. Elastic protrusions are arranged on the inner wall of the connecting cavity, a clamping groove is formed in the side edge of the bottom of the connecting cavity, and a quick release mechanism is arranged on the clamping groove, so that the saddle sleeve is more convenient to disassemble and assemble, and the maintenance cost and the safety risk are reduced while the production efficiency is improved; arc-shaped transition of the working cavity and the connecting cavity reduces resistance, and the service life is prolonged through an inner wall wear-resistant coating; the opening end face shape of the saddle sleeve can be set according to the requirements of forgings of different specifications.

Description

Technical Field

[0001] This utility model belongs to the field of internal step forging forming technology, and more specifically it relates to a lever sleeve assembly with quick release function. Background Technology

[0002] Currently, the existing structure of the forging sleeve, a key forging carrier used in machining internal stepped forgings, has several limitations. Currently, the forging sleeve and forging lever are generally integrally formed. If, due to poor equipment precision, operational errors, or issues with material ductility, the inner hole fails to expand to the target size, the forging can easily become stuck inside the forging sleeve. In such cases, the forging must be removed by destructive means, or the forging sleeve must be replaced directly, which undoubtedly results in a waste of raw materials and tooling.

[0003] In practical applications, if the connection between the lever sleeve and the lever is not secure enough, local fretting or gap expansion is likely to occur under forging impact load and high-temperature deformation, resulting in uneven stress during forging processing, which in turn leads to abnormal wear between the lever sleeve and the mandrel, seriously threatening production safety.

[0004] Furthermore, if the disassembly and assembly of the lever sleeve is not convenient enough, operators usually have to use specialized tools, spending a lot of time and effort on disassembly and assembly. This inconvenience not only seriously affects production efficiency, but also, during frequent disassembly and assembly, improper operation may damage the lever or forging die components, thereby increasing production costs and creating safety hazards. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a lever sleeve assembly with a quick-release function. This addresses the problems in existing technologies, such as the integral molding of the lever and sleeve causing forging jamming, wasting material and tooling; unstable connection leading to uneven stress on the forging, abnormal wear of components, endangering production safety; and inconvenient disassembly and assembly, easily damaging equipment, increasing costs and potential hazards.

[0006] To achieve the above objectives, this utility model adopts the following technical solution:

[0007] This utility model provides a horse lever sleeve assembly with quick-release function, including two horse lever sleeves arranged coaxially and symmetrically.

[0008] The horse lever sleeve has a working cavity inside. The inner diameter of the working cavity near the bottom of the horse lever sleeve is smaller than the inner diameter of its front part, forming a connecting cavity.

[0009] The connecting cavity has an elastic protrusion on its radial inner wall and a slot is provided on the bottom side edge of the connecting cavity. The slot is provided with a quick-release mechanism for fixing the two horse lever sleeves to both ends of the horse lever spindle. The quick-release mechanism consists of two annular blocks and a locking mechanism provided on the annular blocks.

[0010] The present invention is further configured such that an arc-shaped transition is provided between the working cavity and the connecting cavity.

[0011] The present invention is further configured such that: an integrally formed locking block is provided on the annular block, and the locking block on the annular block is interference-fitted with the locking groove on the bottom side edge of the connecting cavity.

[0012] The present invention is further configured such that the mating surfaces of the card block and the card slot are trapezoidal.

[0013] The present invention is further configured such that: the locking mechanism is a lug provided at both ends of the annular block, and the lug is provided with a threaded hole.

[0014] The present invention is further configured such that the elastic protrusion is a hemispherical protrusion, and the hemispherical protrusion is uniformly distributed along the radial inner wall of the connecting cavity.

[0015] The present invention is further configured such that the inner wall of the working cavity is provided with a wear-resistant coating.

[0016] The present invention is further configured such that the opening end face of the horse lever sleeve is inclined, planar, or curved.

[0017] In summary, this utility model has the following beneficial effects:

[0018] This invention provides a lever sleeve assembly with a quick-release function. The assembly employs a double coaxial lever sleeve structure, allowing for rapid disassembly when the forging is stuck, reducing material waste. A hemispherical elastic protrusion is provided on the inner wall of the connecting cavity, working in conjunction with a slot and locking mechanism to effectively buffer impact and resist high-temperature deformation, ensuring a stable connection. The quick-release mechanism consists of an annular block and a threaded lug locking device, allowing for tool-free assembly and disassembly, improving efficiency and reducing operational risks. The working cavity and connecting cavity feature an arc-shaped transition design to reduce resistance, and the wear-resistant coating on the inner wall extends service life. The lever sleeve opening face is designed according to different specifications to adapt to different forging requirements, enhancing the assembly's versatility. Attached Figure Description

[0019] Figure 1 This is a schematic cross-sectional view of the present invention;

[0020] Figure 2 This is a partial structural schematic diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the quick-release mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the utility model in use.

[0023] Reference numerals: 1. Horse-mounted lever sleeve; 3. Quick-release mechanism; 4. Locking mechanism; 10. Working chamber; 15. Annular block; 20. Connecting chamber; 21. Elastic protrusion; 101. Arc-shaped transition; 201. Slot; 301. Locking block; 401. Support lug. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] To make the objectives, solutions, and advantages of this utility model clearer, the following detailed description of this utility model is provided in conjunction with the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0026] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other embodiments, well-known structures, circuits, materials, or methods are not specifically described in order to avoid obscuring the present invention.

[0027] In the description of this utility model, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0028] The following is in conjunction with the appendix of this utility model. Figure 1-4 The embodiments of this utility model will be described in detail below.

[0029] Example 1:

[0030] like Figure 1-3 As shown, this embodiment provides a lever sleeve assembly with quick-release function, including two lever sleeves 1 arranged coaxially and symmetrically. A working cavity 10 is formed within each lever sleeve 1. The inner diameter of the working cavity 10 near the bottom of the lever sleeve 1 is smaller than the inner diameter of its front portion, forming a connecting cavity 20. Elastic protrusions 21 are provided on the radial inner wall of the connecting cavity 20. In terms of structural stability, the connecting cavity 20 formed by the smaller inner diameter of the working cavity 10 near the bottom of the lever sleeve 1 compared to the front portion provides a stable foundation for the connection of the two lever sleeves on the lever spindle, effectively reducing relative displacement. The elastic protrusions 21, evenly distributed on the radial inner wall of the connecting cavity 20, not only make the forces in all directions more balanced but also improve installation accuracy and reduce problems caused by installation deviations.

[0031] It should be noted that the elastic protrusion 21 is a hemispherical protrusion, which is uniformly distributed along the radial inner wall of the connecting cavity 20. The hemispherical elastic protrusion 21 can evenly disperse stress during the connection and operation of the two lever sleeves, avoiding local stress concentration that could lead to component damage, thereby improving overall durability. The hemispherical elastic protrusion can be processed on the lever sleeve using injection molding or machining. Injection molding requires designing an injection mold that matches the lever sleeve and can accurately form the elastic protrusion. Thermoplastic elastomer is selected as the raw material, heated and melted, and then injected into the mold cavity. After cooling and solidification, the finished product is removed. Machining uses spring steel as the blank, and after rough processing such as cutting, turning, and milling, the elastic protrusion is manufactured through cold extrusion, hot upsetting, and other finishing and forming processes. In terms of material selection, thermoplastic elastomers combine the advantages of plastics and rubber. Polyurethane has excellent elasticity and wear resistance, and can withstand large loads. Spring steel has high elastic limit and fatigue limit, and is suitable for applications that withstand large impact forces.

[0032] Furthermore, a slot 201 is provided on the bottom side edge of the connecting cavity 20, and a quick-release mechanism 3 is provided on the slot 21. For ease of quick release, the quick-release mechanism 3, consisting of two annular blocks 15 and a locking mechanism 4 on the annular blocks 15, works in conjunction with the slot 201 to easily fix the two lever sleeves 1 to both ends of the lever spindle. When it is necessary to disassemble or replace the lever sleeve 1, the operator can easily remove one side of the lever sleeve 1 by operating the locking mechanism 4 on one side. The locking mechanism 4 can be a common locking mechanism such as a bolt and nut, a spring clip, or a magnetic attraction, thereby quickly removing the forging material, greatly saving time and effort, reducing equipment downtime, eliminating the need for destructive methods to remove the forging, and avoiding waste of raw materials and tooling.

[0033] Example 2:

[0034] To further improve the stability of lever sleeve 1 on lever spindle, refer to Figure 1 In this embodiment, an arc-shaped transition 101 is provided between the working cavity 10 and the connecting cavity 20.

[0035] The arc-shaped transition 101 between the working cavity 10 and the connecting cavity 20 provides guidance for the installation of the lever sleeve 1, making it easier for the lever sleeve 1 to be accurately aligned with the mandrel and improving installation efficiency. During the forging process, when the lever sleeve 1 bears the working load, the arc-shaped transition 101 can evenly distribute the stress to a larger area, avoiding component damage caused by stress concentration and protecting the integrity of the component. At the same time, it prevents the lever sleeve 1 from sliding or shaking relative to the mandrel during operation, so that the lever sleeve 1 and the mandrel can maintain a good relative positional relationship and ensure the stability of the lever sleeve 1 on the mandrel.

[0036] Example 3:

[0037] While ensuring the efficiency of disassembling the mast cover, to further improve the accuracy and stability of the connection, refer to Figure 2 , Figure 3 As shown in the figure, in this embodiment, the annular block 15 is provided with an integrally formed locking block 301, and the locking block 301 on the annular block 15 is interference-fitted with the locking groove 201 on the bottom side edge of the connecting cavity 20. It can be clearly seen from the attached figures that the fit between the locking block 301 and the locking groove 201 is relatively fixed and clear. During installation, the locking groove 201 provides accurate guidance for the placement of the locking block 301, allowing the annular block 15 to be assembled with the connecting cavity 20 in the correct direction. This precise guidance reduces the possibility of subsequent usage problems due to inaccurate installation position. Simultaneously, the forging process of the lever sleeve 1 generates extrusion force, which effectively fixes the annular block 15 to the connecting cavity 20, preventing the annular block 15 from loosening, shifting, or falling off during use, thus ensuring the accuracy and stability of the connection between the quick-release mechanism and the lever sleeve.

[0038] Furthermore, the mating surface between the locking block 301 and the slot 201 is trapezoidal. This trapezoidal mating surface allows the locking block 301 to achieve a good self-locking effect after being embedded in the slot 201. When the locking block 301 is subjected to external force and attempts to disengage, the inner wall of the slot 201 generates greater friction and compressive force to prevent movement, enhancing the connection stability between the annular block 15 and the connecting cavity 20, and ensuring the reliable and safe operation of the lever sleeve assembly. Moreover, when facing impacts and vibrations, the trapezoidal mating surface can disperse the impact force and maintain a stable connection.

[0039] During installation, the guiding effect of the trapezoidal mating surface is significant. Even with angular deviations, the inclined side guides the locking block 301 into the slot 201, reducing installation difficulty and improving efficiency. Simultaneously, as the insertion depth of the locking block 301 increases, the contact area gradually expands, resulting in a more uniform distribution of compressive force. Under the same interference fit, less installation force is required, reducing labor intensity.

[0040] During disassembly, by applying appropriate force with suitable tools, the locking block 301 can be pulled out of the slot 201. Its guiding nature ensures that the movement trajectory of the locking block 301 is fixed during disassembly, without any deviation or jamming, thus improving disassembly efficiency and success rate.

[0041] Example 4:

[0042] To further improve disassembly convenience, the locking mechanism 4 consists of lugs 401 located at both ends of the annular block 15, and each lug 401 has threaded holes. During installation, the lugs 401 are conveniently positioned, simplifying the installation process. During connection, the annular block 15 is securely fixed by screwing the bolts into the threaded holes. When the lever sleeve 1 needs to be disassembled, the operator only needs to use a tool to unscrew the bolt installed at the threaded hole on one side of the lug to easily remove the lever sleeve 1, further improving disassembly efficiency. It also offers good reusability and extends the service life of the locking mechanism.

[0043] Example 5:

[0044] Considering that the internal working cavity 10 of the lever sleeve 1 is prone to wear due to frequent friction with the lever spindle during continuous disassembly and assembly, in this embodiment, the inner wall of the working cavity 10 is provided with a wear-resistant coating.

[0045] In this embodiment, the wear-resistant coating can be an alumina coating. The hardness of the alumina coating allows it to maintain good wear resistance when facing friction, while its chemical stability ensures that it is not easily corroded by chemicals in various working environments, making it suitable for high-temperature, high-speed, and corrosive working scenarios. Alternatively, a polytetrafluoroethylene (PTFE) coating can be used. PTFE has an extremely low coefficient of friction, which can effectively reduce the friction between the mast mandrel and the inner wall of the working cavity, reducing wear, and also providing some lubrication. The wear-resistant coating can reduce wear, extend the life of the mast sleeve, and reduce maintenance costs.

[0046] Example 6:

[0047] This embodiment is based on the above embodiment, and refers to... Figure 4 In this embodiment, the shape and specifications of the open end face of the lever sleeve 1 can be set according to actual usage requirements, including but not limited to inclined settings, planar settings, or curved surface settings with a specific curvature. By combining two lever sleeves 10 of different specifications, the lever sleeve assembly 1 forms a forging area that adapts to forgings of different specifications when installed on the lever, effectively avoiding the need for enterprises to frequently replace integrated levers due to differences in forging specifications, thus reducing procurement and time costs. At the same time, the precisely matched forging area can provide more stable support and constraint for the forging during the forging process, which helps to improve the forming accuracy of the forging and ensure product quality.

[0048] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A horse girth set assembly with quick release function, characterized in that: Includes two coaxially symmetrically arranged horse lever sleeves (1); The working cavity (10) is provided inside the horse lever sleeve (1). The inner diameter of the working cavity (10) near the bottom of the horse lever sleeve (1) is smaller than the inner diameter of its front part, forming a connecting cavity (20). The connecting cavity (20) has an elastic protrusion (21) on its radial inner wall, and a slot (201) is provided on the bottom side edge of the connecting cavity (20). The slot (201) is provided with a quick-release mechanism (3) for fixing the two horse lever sleeves (1) to both ends of the horse lever spindle. The quick-release mechanism (3) consists of two annular blocks (15) and a locking mechanism (4) provided on the annular blocks (15).

2. The horse-handle sleeve assembly with quick-release function according to claim 1, characterized in that: An arc-shaped transition (101) is provided between the working cavity (10) and the connecting cavity (20).

3. The horse harness set with quick release function according to claim 2, characterized in that: The annular block (15) is provided with an integrally formed locking block (301), and the locking block (301) on the annular block (15) is interference-fitted with the locking groove (201) on the bottom side edge of the connecting cavity (20).

4. The horse harness set with quick release function according to claim 3, characterized in that: The mating surfaces of the card block (301) and the card slot (201) are trapezoidal.

5. A quick-release lever sleeve assembly according to claim 4, characterized in that: The locking mechanism (4) is a lug (401) provided at both ends of the annular block (15), and the lug (401) is provided with a threaded hole.

6. The horse harness set with quick release function according to claim 5, characterized in that: The elastic protrusion (21) is a hemispherical protrusion, and the hemispherical protrusion is evenly distributed along the radial inner wall of the connecting cavity (20).

7. The horse harness set with quick release function according to claim 6, characterized in that: The inner wall of the working chamber (10) is provided with a wear-resistant coating.

8. A horse harness set with quick release function according to any one of claims 1-7, characterized in that, The opening end face of the horse lever sleeve (1) is inclined, planar, or curved.

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