Connecting pin
By designing components such as oil conveying passages, oil outlet holes and oil storage tanks in the coupling pins, the natural flow and storage of lubricating liquid is achieved, which solves the problem that the existing coupling pins cannot self-lubricate, and improves the service life and working efficiency of the equipment.
Patent Information
- Application Number
- CN202421928000.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-09
AI Technical Summary
The existing coupling pins lack the structure and function of storing lubricant, resulting in the inability to lubricate the working environment of the coupling pin without disassembly, which increases labor and time consumption, and may lead to mechanical equipment failures and economic losses.
A coupling pin with a lubricating structure is designed, including a pin body, an oil conveying passage, an oil outlet hole and an oil storage tank. Through the use of these components, the lubricating liquid can flow naturally to the surface of the coupling pin during the working process, providing a good lubricating environment.
By integrating the lubricating structure into the coupling pin, the wear of the coupling pin is reduced, the service life of the equipment is extended, and the working efficiency of mechanical operations is improved.
Smart Images
Figure CN223035454U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of mechanical manufacturing, and particularly relates to a coupling pin. Background Art
[0002] As a component with a simple structure and convenient installation, which is widely used in various types of mechanical equipment, the coupling pin has the function of fixing equipment components. In the field of mechanical manufacturing, the operation of various types of mechanical equipment is inseparable from the application of the coupling pin. Especially in the mechanical operation environment of some iron and steel manufacturing industries, since the coupling pin is long-term used to connect with rigid components, long-term operation usually causes mutual wear between components, resulting in the inability to realize the movement of mechanical equipment, and further causing equipment failures. Therefore, it is usually necessary to regularly add lubricating fluid to lubricate it. If the lubrication is not timely, it will exacerbate the friction between the coupling pin and the pin hole, resulting in an increase in the fit clearance and a decrease in the functional accuracy of the equipment. However, the existing coupling pins currently do not have the structure and function of storing lubricating fluid, and cannot lubricate the working environment of the coupling pin without disassembling it, resulting in the need to consume a large amount of manpower and time to lubricate the coupling pin after disassembling it. Currently, most production modes are full-process assembly lines. Once a failure or work suspension occurs due to the lubrication problem of traditional coupling pins, it will not only disrupt the production rhythm but also cause unnecessary economic losses.
[0003] Therefore, the present application proposes a coupling pin with a lubrication structure, including a pin body; an oil delivery passage is arranged in the pin body, and the oil delivery passage communicates with the first end of the pin body in the axial direction; an oil outlet hole is arranged on the outer periphery of the pin body, and the oil outlet hole communicates with the oil delivery passage; a connection hole is arranged on the outer periphery of the pin body, and the oil outlet hole is located between the connection hole and the first end along the axial direction; through the combined use of the above components, the coupling pin has the function of storing lubricating fluid. In addition, the lubricating fluid can naturally flow to the surface of the coupling pin during the operation of the coupling pin, ensuring a good lubrication environment when the coupling pin operates, thereby reducing the wear of the coupling pin and prolonging the service life of the equipment. Content of the Utility Model
[0004] To achieve the above object, the present utility model is realized through the following technical solutions: The present utility model provides a coupling pin, including: a pin body;
[0005] An oil delivery passage is arranged in the pin body, and the oil delivery passage communicates with the first end of the pin body in the axial direction;
[0006] An oil outlet hole is arranged on the outer periphery of the pin body, and the oil outlet hole communicates with the oil delivery passage;
[0007] A connection hole is arranged on the outer periphery of the pin body, and the oil outlet hole is located between the connection hole and the first end of the pin body along the axial direction of the pin body.
[0008] Preferably, an oil storage groove is provided on the outer peripheral surface of the pin body, and the oil outlet hole communicates with the oil storage groove. The oil storage groove is used to allow the lubricating fluid in the oil delivery passage to flow into the oil storage groove, and during the operation of the coupling pin, the lubricating fluid in the oil storage groove naturally flows to the outer surface of the coupling pin.
[0009] Preferably, the oil storage groove is an annular groove that surrounds the outer periphery of the pin body.
[0010] Preferably, a diversion inclined surface connected to the outer periphery of the pin body is provided on at least one side of the oil storage groove along the axial direction. The diversion inclined surface is used to promote the smooth flow of the lubricating fluid to the outer surface of the coupling pin.
[0011] Preferably, the oil outlet hole communicates with the bottom of the oil storage groove.
[0012] Preferably, the oil outlet hole communicates with the middle of the oil delivery passage along the axial direction of the pin body. And an oil storage space is formed at one end of the oil delivery passage far from the oil outlet hole. The oil storage space is used to store the lubricating fluid, so as to increase the capacity of the coupling pin itself to store the lubricating fluid, and further improve the time that the coupling pin can be used normally after injecting the lubricating fluid once.
[0013] Preferably, the coupling pin further includes a blocking portion. The blocking portion is connected to the first end of the pin body in the axial direction. The oil delivery passage penetrates through the blocking portion. The radial outer dimension of the blocking portion is larger than the radial outer dimension of the pin body, and is used to block the outflow of the lubricating fluid.
[0014] Preferably, the coupling pin further includes an oil delivery member. The oil delivery member at least partially extends into the oil delivery passage and seals the oil delivery passage. The oil delivery member is used to inject the lubricating fluid into the coupling pin.
[0015] Preferably, internal threads are provided on the inner wall of the oil delivery passage, and the oil delivery member is threadedly connected to the oil delivery passage. While making the oil delivery member and the oil delivery passage be hermetically connected, it also prevents the oil delivery member from slipping out of the oil delivery passage.
[0016] In this application, a power device is further proposed. The power device is provided with a coupling pin as described in any one of the above. The power device has a pin hole, and the pin hole is used to allow the coupling pin to pass through and be fixed to the power device.
[0017] In the present utility model, a coupling pin is provided, which includes a pin body. An oil delivery passage is arranged inside the pin body, and the oil delivery passage communicates with the first end of the axial direction of the pin body. An oil outlet hole is arranged on the outer periphery of the pin body, and the oil outlet hole communicates with the oil delivery passage. A connection hole is arranged on the outer periphery of the pin body, and the oil outlet hole is located between the connection hole and the first end along the axial direction. Through the cooperative use of the above components, the lubricating fluid can naturally flow to the surface of the coupling pin during the working process of the coupling pin, ensuring a good lubricating environment when the coupling pin operates, thereby reducing the wear of the coupling pin, greatly prolonging the service life of the equipment, and improving the working efficiency of mechanical operations. Brief Description of the Drawings
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0019] Figure 1 It is a front view structural schematic diagram of a coupling pin proposed by the present application;
[0020] Among them, the reference numerals are:
[0021] 1 - pin body; 2 - oil delivery passage; 3 - oil outlet hole; 4 - oil delivery hole; 5 - connection hole; 6 - oil storage groove; 7 - oil storage space; 8 - blocking portion. Detailed Embodiments
[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0023] As used in the present utility model, the singular forms "a", "an" and "the" include plural referents, the term "or" is generally used in the sense of including "and / or", the term "several" is generally used in the sense of including "at least one", the term "at least two" is generally used in the sense of including "two or more", in addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or at least two of such features. The term "proximal end" is usually the end close to the operator, the term "distal end" is usually the end close to the patient, "one end" and "the other end" as well as "proximal end" and "distal end" usually refer to two corresponding parts, which include not only the endpoints. The terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. In addition, as used in the present utility model, an element disposed on another element generally only indicates that there is a connection, coupling, cooperation or transmission relationship between the two elements, and the two elements may be directly or indirectly connected, coupled, cooperated or transmitted through an intermediate element, and cannot be understood as indicating or implying the spatial position relationship between the two elements, that is, an element may be inside, outside, above, below or on one side of another element in any orientation, unless otherwise explicitly specified in the content. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0024] Please refer to Figure 1 as shown in Figure 1 a schematic internal structure diagram of a coupling pin provided by the present application. In the present application, the coupling pin includes a pin body 1; the pin body 1 is generally columnar, and an oil delivery passage 2 is provided inside the pin body 1, and the oil delivery passage 2 communicates with the first end in the axial direction of the pin body 1; an oil outlet hole 3 is provided on the outer periphery of the pin body 1, and the oil outlet hole 3 communicates with the oil delivery passage 2; a connection hole 5 is provided on the outer periphery of the pin body 1, the oil outlet hole 3 is located between the connection hole 5 and the first end in the axial direction of the pin body 1 along the axial direction of the pin body 1, and the first end in the axial direction of the pin body is located Figure 1At the right end of the pin body 1 described in [reference], in addition, an oil injection hole 4 is provided at the first end of the pin body 1 in the axial direction. The oil injection hole 4 communicates with the oil outlet hole 3 and together forms the oil injection passage 2. That is, the oil outlet hole 3 and the oil injection hole 4 are respectively the two open ends of the oil injection passage 2. The oil injection hole 5 is used for allowing on-site operators to inject lubricating fluid into the oil injection passage 2 through the oil injection hole 4, and the oil outlet hole 3 is used for allowing the lubricating fluid in the oil injection passage 2 to naturally reach the outer surface of the pin body 1.
[0025] In addition, an oil storage groove 6 is provided on the outer peripheral surface of the pin body 1. The oil outlet hole 3 communicates with the oil storage groove 6, and the oil storage groove 6 is an annular groove surrounding the outer periphery of the pin body 1.
[0026] Please refer to Figure 1 As shown, in this embodiment, there are two oil outlet holes 3, and the two oil outlet holes 3 are respectively located at the upper and lower ends of the oil storage groove 6. The oil outlet hole 3 is specifically provided at the bottom of the oil storage groove 6. In other alternative embodiments, only one oil outlet hole 3 may be provided. At this time, the oil outlet hole 3 is located at the upper end of the oil storage groove 6, so that after the lubricating fluid flows into the oil storage groove 6 through the oil outlet hole 3, it can naturally flow downward to the lower end of the oil storage groove 6 by the action of gravity and lubricate the entire coupling pin during the working process of the coupling pin. In addition, the oil outlet hole 3 may be provided at the edge of the oil storage groove 6. The above settings can all be achieved and can be specifically adjusted according to different working conditions on site. This application does not make too many limitations and elaborations here.
[0027] In this application, guide slopes may be provided at the edge positions at both ends of the oil storage groove 6. The guide slopes are used to promote the smooth flow of the lubricating fluid to the outer surface of the coupling pin. The angle between the guide slope and the axial direction of the pin body can be 30 degrees or 45 degrees. On-site operators can adaptively adjust the length of the guide slope and the opening angle of the angle between the guide slope and the axial direction of the pin body according to the specific effect of the lubricating fluid flowing to the outer surface of the coupling pin. For example, when the lubricating fluid is difficult to flow to the outer surface of the coupling pin, reduce the opening angle of the angle between the guide slope and the axial direction of the pin body and reduce the length of the guide slope. It can be specifically adjusted according to the models of different power devices matched by the coupling pin. Since this application cannot specifically enumerate the length and angle of the guide slope here, this application does not make too many limitations and elaborations here.
[0028] Please refer to Figure 1As shown, in this embodiment, the coupling pin further includes a blocking portion 8. The blocking portion 8 is connected to the first end of the pin body 1 in the axial direction, and the blocking portion 8 is welded to the first end of the pin body 1 in the axial direction. A passage adapted to the oil delivery hole 4 is provided in the middle of the blocking portion 8. The inner wall of the passage can be conformally connected to the oil delivery member. The oil delivery passage 2 penetrates through the blocking portion 8. The radial outer dimension of the blocking portion 8 is greater than the radial outer dimension of the pin body 1. After the coupling pin is connected to the power device, the inner wall of the blocking portion 8 on the side close to the power device abuts against the outer wall of the power device, so as to block the lubricating fluid from flowing out through the gap, thereby increasing the residence time of the lubricating fluid between the coupling pin and the power device, and thus improving the service life of the coupling pin.
[0029] It should be noted that the oil delivery member can be an oil delivery pipe or an oil injection grease nipple. At least a part of the oil delivery member extends into the oil delivery passage. The outer wall of the oil delivery member is conformally and hermetically connected to the inner wall of the oil delivery passage. Specifically, it can be a threaded connection, that is, the inner wall of the oil delivery passage is provided with an internal thread, and the outer wall of the part of the oil delivery member extending into the oil delivery passage is provided with a matching external thread, so that the oil delivery member can be connected to the pin body 1 and is hermetically connected to the pin body 1. In addition, the oil delivery member penetrates through the blocking portion 8, and the oil delivery member is used to input the lubricating fluid into the pin body 1. The above are all prior arts, and this application does not make too many limitations here.
[0030] In this embodiment, there are two connection holes 4. The two connection holes 4 are oppositely arranged at the second end of the pin body 1 in the axial direction. The second end of the pin body 1 in the axial direction is the opposite end of its first end and is located Figure 1 on the left side of the pin body 1 described above, that is, the end of the pin body 1 far from the oil delivery hole 4. The two connection holes 4 together form a connection passage. The connection passage is used to insert a fixing member. The inner wall of the connection passage is conformally connected to the fixing member. The fixing member is specifically a screw rod or a copper connecting rod, etc. The fixing member passes through the connection passage and is used to connect the pin body 1 to the power device. Or, when the pin body 1 passes through the power device, the fixing member can abut against one end of the power device in the axial direction of the pin body 1. In addition, the blocking portion abuts against the other end of the pin body 1 in the axial direction. The two cooperate together to limit the coupling pin in the power device, thereby preventing the pin body 1 from sliding and shifting in the axial direction after being connected to the power device 1.
[0031] Please refer to Figure 1As shown, in this embodiment, the oil outlet hole 6 communicates with the middle of the oil delivery passage 8 along the axial direction of the pin body 1, and an oil storage space 7 is formed at one end of the oil delivery passage 2 away from the oil outlet hole 6. The oil storage space 7 is used to store the lubricating fluid, thereby increasing the capacity of the coupling pin itself to store the lubricating fluid, and further extending the time during which the coupling pin can be used normally after a single input of the lubricating fluid. It should be noted that the oil storage space 7 does not communicate with the connection passage at the distal end to prevent the lubricating fluid from flowing out of the pin body 1 through the connection passage.
[0032] In this application, the power device has a pin hole, and the coupling pin passes through the pin hole to connect with the power device. The axial length of the coupling pin is greater than that of the pin hole. The radial outer dimension of the blocking portion is greater than the radial outer dimension of the opening at one end of the pin hole with which it contacts. The length of the fixing member is greater than the maximum diameter of the opening at one end of the pin hole close to the connection hole. The outer diameter dimension of the coupling pin is smaller than the inner diameter dimension of the pin hole. There is a certain assembly tolerance between the coupling pin and the pin hole (the assembly tolerance is greater than 0), and its specific value can be adjusted according to different working conditions. For example, when the flow capacity of the lubricating fluid on the outer surface of the coupling pin is poor, the assembly tolerance between the coupling pin and the pin hole can be appropriately increased. In addition, the power device includes an oil pump, a motor, and an engine. In other alternative embodiments, the power device further includes a hydraulic cylinder. The above are all prior arts, and this application does not make excessive limitations here.
[0033] In summary, in this utility model, a coupling pin is provided. The coupling pin includes a pin body 1. The pin body 1 is generally columnar. An oil delivery passage 2 is provided inside the pin body 1, and the oil delivery passage 2 communicates with the first end of the pin body 1 in the axial direction. An oil outlet hole 3 is provided on the outer periphery of the pin body 1, and the oil outlet hole 3 communicates with the oil delivery passage 2. A connection hole 5 is provided on the outer periphery of the pin body 1. The oil outlet hole 3 is located between the connection hole 5 and the first end of the pin body 1 in the axial direction of the pin body 1. An oil storage space is provided inside the pin body 1, and an oil storage groove 6 is provided on the outer periphery of the pin body 1. Through the combined use of the above components, the oil storage space and the oil storage groove 6 are jointly used to enable the lubricating fluid to be stored in the coupling pin. At the same time, the lubricating fluid can flow through the oil delivery passage and through the oil outlet hole to naturally flow to the surface of the coupling pin during the operation of the coupling pin, extending the service time of the coupling pin in the lubricated state and ensuring a good lubricating environment during the operation of the coupling pin, thereby reducing the wear of the coupling pin, greatly extending the service life of the equipment, and improving the working efficiency of mechanical operations.
[0034] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A connecting pin, characterized in that: include: Pin body; An oil delivery passage is provided in the pin body, and the oil delivery passage is communicated with a first axial end of the pin body; The outer periphery of the pin body is provided with an oil outlet hole, and the oil outlet hole is communicated with the oil delivery passage; A connecting hole is arranged on the outer periphery of the pin body, and the oil outlet hole is located between the connecting hole and the first axial end of the pin body along the axial direction of the pin body.
2. A coupling pin according to claim 1, characterized in that: An oil storage groove is arranged on the outer peripheral surface of the pin body, and the oil outlet hole is connected to the oil storage groove.
3. A coupling pin according to claim 2, characterized in that: The oil storage groove is an annular groove surrounding the outer circumference of the pin body.
4. A coupling pin according to claim 2, characterized in that: The oil storage groove is provided with a flow guiding inclined surface connected to the outer periphery of the pin body along at least one side of the axial direction.
5. A coupling pin according to claim 2, characterized in that: The oil outlet hole is connected to the bottom of the oil storage tank.
6. A coupling pin according to claim 1, characterized in that: The oil outlet hole is communicated with a middle portion of the oil delivery passage along the axial direction of the pin body.
7. A coupling pin according to claim 1, characterized in that: The coupling pin further comprises a blocking portion, which is connected to the first axial end of the pin body, the oil delivery passage passes through the blocking portion, the radial outer dimension of the blocking portion is larger than the radial outer dimension of the pin body, and is used to block the outflow of lubricating fluid.
8. A coupling pin according to claim 1, characterized in that: The coupling pin further includes an oil delivery member, which at least partially extends into the oil delivery passage and seals the oil delivery passage.
9. A coupling pin according to claim 8, characterized in that: The inner wall of the oil delivery passage is provided with an internal thread, and the oil delivery member is threadedly connected to the oil delivery passage.