Pin shaft assembly structure convenient to lubricate
By introducing an oil reservoir, an oil pump assembly, and a positioning mechanism into the pin assembly structure, the problem of increased friction caused by lubricant consumption is solved, achieving uniform distribution of lubricant and positioning stability, thereby improving the service life and operational stability of the equipment.
Patent Information
- Application Number
- CN202520576199.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-03-31
AI Technical Summary
The existing pin assembly structure suffers from depletion of lubricating oil after long-term use, leading to increased friction, higher energy loss, severe component wear, and impacting equipment stability and lifespan. It may also cause thermal deformation and equipment failure.
A pin assembly structure for easy lubrication was designed, which includes an oil reservoir, an oil pump assembly, and a positioning mechanism. The lubricating oil is accurately distributed through the oil filling hole, main oil passage, secondary oil passage, and oil outlet. The positioning shims and positioning pins ensure that the shaft works in a specific position and prevent rotational shaking.
It achieves uniform distribution of lubricating oil, reduces the coefficient of friction, reduces wear and energy loss, extends equipment life, ensures stable and efficient operation of mechanical devices, and prevents equipment failure.
Smart Images
Figure CN223709281U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mechanical parts assembly technical field especially, a pin shaft assembly structure convenient to lubrication. BACKGROUND
[0002] Pin shaft is a kind of cylindrical part for connection, positioning or transmission, usually made of metal, with high strength and wear resistance. In daily life, pin shaft is widely used in various equipment and tools. For example, the common folding chair connects chair leg and seat surface through pin shaft, realizes the folding and unfolding of chair, and is convenient for storage and carrying. Also, the hinge of door and window, the pin shaft in which makes door and window flexible to rotate, is convenient for opening and closing. These applications bring many beneficial effects, not only improve the practicability and convenience of daily necessities, but also enhance the stability and durability of equipment, make people's life more convenient and comfortable.
[0003] Pin shaft assembly structure is a common mechanical connection structure, mainly composed of pin shaft, pin hole component and possibly equipped with split pin or retainer ring. As a key connecting piece, pin shaft penetrates the connected components, plays a role in positioning and transmitting load. Pin hole component is the part matched with pin shaft, provides the installation position of pin shaft, so that the connected components can rotate relative to each other or remain fixed connection. Split pin or retainer ring is used to prevent the axial movement of pin shaft during work, to ensure the stability of connection. By inserting pin shaft into pin hole, mechanical connection between components is realized. When bearing external force, pin shaft transmits force to the connected components, and the split pin or retainer ring maintains the position of pin shaft, ensuring the reliable operation of the whole structure.
[0004] In the prior art, due to the complex connection relationship between components, it is difficult to add lubricating oil. After long-term use, the lubricating oil is consumed, the components are in direct contact, the friction force is greatly increased, a large amount of energy is consumed, the operating efficiency of mechanical equipment is reduced, the energy consumption is increased, excessive friction can accelerate the wear of components, causing scratches, deformation or even damage on the surface of pin shaft and the matched parts, greatly shortening the service life, increasing the cost of equipment maintenance and replacement of components. If the large amount of heat generated by friction cannot be dissipated in time, it may cause thermal deformation of components, damage the precision of assembly structure, cause unstable operation of equipment, vibration, noise and other phenomena, and even cause equipment failure, affecting production process and work efficiency. Therefore, a pin shaft assembly structure convenient to lubricate is proposed to solve the above problems. UTILITY MODEL CONTENTS
[0005] In order to make up for the above shortcomings, the utility model provides a pin shaft assembly structure convenient to lubricate, aiming at improving the problem that the pin shaft assembly structure in the prior art is closely matched, making it difficult to add lubricating oil from the outside.
[0006] In order to achieve the above object, the utility model discloses the following technical scheme:
[0007] A pin shaft assembly structure convenient for lubrication, including the axle body, the inner side of axle body has the lubricating mechanism of sliding, the outer side of axle body is connected with the positioning mechanism of sliding,
[0008] The lubricating mechanism includes the oil storage cavity, the inner side of axle body is set up, the inner side of oil storage cavity is connected with the oil pump assembly of sliding, the outer side of axle body is set up with one oil hole, the inner side of axle body is set up with one main oil way, the outer side of axle body is set up with a plurality of main oil outlet holes, the main oil outlet hole with main oil way meets, the inner side of axle body is set up with a plurality of vice oil channels, the outer side of axle body is set up with a plurality of vice oil outlet holes, and vice oil outlet hole with vice oil channel meets.
[0009] As further description of the above technical scheme:
[0010] The oil pump assembly includes the piston, the outer side of piston is connected in the inner side of oil storage cavity of sliding, the outer side of piston is set up with the groove, the inner side of the groove of piston is fixedly connected with rubber ring, and the outer side of rubber ring is connected in the inner side of oil storage cavity of sliding.
[0011] As further description of the above technical scheme:
[0012] The outer side of piston is fixedly connected with the pull rod, and the outer side of pull rod is connected in the inner side of axle body of sliding.
[0013] As further description of the above technical scheme:
[0014] The outer side of piston is fixedly connected with the spring, and the end, away from piston of spring, is fixedly connected in the inner side of axle body.
[0015] As further description of the above technical scheme:
[0016] The positioning mechanism includes the connecting head one, the inner side of connecting head one is set up with the pin hole, the outer side of axle body is connected in the inner side of pin hole of sliding, the outer side of connecting head one is set up with the fixed hole, and the outer side of axle body is connected with the positioning gasket of sliding.
[0017] As further description of the above technical scheme:
[0018] The outer side of positioning gasket is fixedly connected with the positioning column, the outer side of axle body is set up with the insertion slot, and the outer side of positioning column is connected in the inner side of insertion slot of sliding.
[0019] As further description of the above technical scheme:
[0020] The outer side of the positioning gasket is fixedly connected with a fixed column, and the outer side of the fixed column is slidably connected to the inner side of the fixed hole;
[0021] As a further description of the above technical solution:
[0022] One end of the shaft body is provided with a insertion hole, the inner side of the insertion hole is slidably connected with a split pin, and the outer side of the shaft body is rotatably connected with a connector two.
[0023] The utility model has the advantages of the following beneficial effects:
[0024] 1、 in the utility model, through pulling the pull rod, lubricating oil can be added to the oil filling hole, the lubricating oil flows to the main oil passage and the auxiliary oil passage under the push of the piston, and flows out from the main oil outlet hole and the auxiliary oil outlet hole, so that the lubricating oil can accurately reach the position needing lubrication, full and uniform lubrication is realized, the friction coefficient is effectively reduced, the part wear and tear and energy loss are reduced, the service life of the pin shaft assembly structure is prolonged, and stable and efficient operation of the mechanical device is ensured.
[0025] 2、 in the utility model, the fixed column on the positioning gasket cooperates with the fixed hole of the connector one, the shaft body and the connector one are tightly connected, the overall structural stability is enhanced, the positioning column cooperates with the insertion slot on the shaft body, the shaft body is prevented from rotating in the pin hole of the connector one, the shaft body is ensured to work at a specific angle and position, the mechanical action accuracy is improved, the split pin is inserted into the insertion hole at one end of the shaft body, the shaft body is further prevented from being pulled out of the pin hole, multiple protections are adopted to prevent the pin shaft from rotating and shaking, the reliability and stability of the pin shaft assembly structure are effectively improved, the normal use of the pin shaft assembly structure is ensured, and the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 A three-dimensional schematic view of the pin shaft assembly structure convenient for lubrication is provided for the utility model;
[0027] Figure 2 A structural schematic view of the shaft body of the pin shaft assembly structure convenient for lubrication is provided for the utility model;
[0028] Figure 3 A structural schematic view of the spring of the pin shaft assembly structure convenient for lubrication is provided for the utility model;
[0029] Figure 4 A structural schematic view of the fixed hole of the pin shaft assembly structure convenient for lubrication is provided for the utility model.
[0030] LEGEND:
[0031] 1, shaft body; 2, oil storage cavity; 3, main oil channel; 4, main oil outlet hole; 5, auxiliary oil channel; 6, auxiliary oil outlet hole; 7, piston; 8, rubber ring; 9, oil filling hole; 10, spring; 11, pull rod; 12, positioning washer; 13, insertion slot; 14, positioning column; 15, fixing column; 16, insertion hole; 17, split pin; 18, connector one; 19, pin hole; 20, fixing hole; 21, connector two. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0033] Referring to Figures 1 to 3 , the utility model provides an embodiment: a pin shaft assembly structure convenient for lubrication, including shaft body 1, shaft body 1 adopts high-strength alloy steel and is made, it has enough strength and wear resistance, can bear various loads in work, the shape of shaft body 1 is cylindrical, the surface is treated with fine processing, guarantee higher dimensional accuracy and surface finish, thereby realizing good cooperation with other parts, the inside of shaft body 1 slides lubricating mechanism, the outside of shaft body 1 is slidably connected with positioning mechanism.
[0034] Lubricating mechanism includes oil storage cavity 2, and the oil storage cavity 2 is a cavity for storing lubricating oil, can accommodate a certain amount of lubricating oil, provides oil source for the whole lubricating system, and the oil storage cavity 2 is arranged on the inside of the shaft body 1, and the inside of the oil storage cavity 2 is slidably connected with the oil pumping assembly, and the outside of the shaft body 1 is provided with an oil filling hole 9, and the oil filling hole 9 is used to add lubricating oil to the oil storage cavity 2, and the oil filling hole 9 is provided with a sealing cover to prevent dust, impurities from entering and lubricating oil from leaking, and the inside of the shaft body 1 is provided with a main oil channel 3, and the main oil channel 3 is the main lubricating oil flow path, which can ensure the smooth flow of lubricating oil.
[0035] The outside of the shaft body 1 is provided with a plurality of main oil outlet holes 4, the main oil outlet holes 4 can make the lubricating oil flow from the inside of the shaft body 1 to the inside of the connector two 21, realize lubrication, the main oil outlet holes 4 intersect with the main oil channel 3, the inside of the shaft body 1 is provided with a plurality of auxiliary oil channels 5, the auxiliary oil channels 5 are spiral pipes, can accommodate more lubricating oil, and the cross section of the spiral is larger than that of the straight cylinder, increases the lubricating area, improves the lubricating performance, reduces the friction coefficient, reduces the abrasion and energy loss, the outside of the shaft body 1 is provided with a plurality of auxiliary oil outlet holes 6, the auxiliary oil outlet holes 6 further increase the distribution range and uniformity of the lubricating oil, and the auxiliary oil outlet holes 6 intersect with the auxiliary oil channels 5.
[0036] The pump oil assembly comprises a piston 7, which can deliver the lubricating oil in the oil storage cavity 2 to the main oil passage 3 and the auxiliary oil passage 5 under the pushing of the subsequent components, the outer side of the piston 7 is slidably connected to the inner side of the oil storage cavity 2, the outer side of the piston 7 is provided with a groove, the inner side of the groove of the piston 7 is fixedly connected with a rubber ring 8, the rubber ring 8 has good elasticity and wear resistance, the rubber ring 8 is in close contact with the inner side of the oil storage cavity 2, thereby playing a sealing role, preventing the lubricating oil from leaking from the gap between the piston 7 and the oil storage cavity 2 during the movement of the piston 7, and the outer side of the rubber ring 8 is slidably connected to the inner side of the oil storage cavity 2.
[0037] The outer side of the piston 7 is fixedly connected with a pull rod 11, by pulling the pull rod 11 outward, the piston 7 can overcome the pushing force of the subsequent components and be retracted into the oil filling hole 9, at this time, the sealing cover of the oil filling hole 9 can be opened, so that the lubricating oil can be injected into the oil storage cavity 2, and the outer side of the pull rod 11 is slidably connected to the inner side of the shaft body 1.
[0038] The outer side of the piston 7 is fixedly connected with a spring 10, the spring 10 can stably push the piston 7 outward, so that the lubricating oil can be continuously delivered to the connection position needing lubrication, thereby maintaining efficient lubrication, reducing wear and energy loss, and the end of the spring 10 away from the piston 7 is fixedly connected to the inner side of the shaft body 1.
[0039] Referring to Figure 1 , Figure 3 and Figure 4 , the positioning mechanism comprises a connecting head 18, which can be used to connect other devices, so as to facilitate connection and transmission, the inner side of the connecting head 18 is provided with a pin hole 19, the diameter of the pin hole 19 matches the outer diameter of the shaft body 1, the outer side of the shaft body 1 is slidably connected to the inner side of the pin hole 19, thereby realizing the connection between the shaft body 1 and the connecting head 18, the machining precision of the pin hole 19 is high, so as to ensure that the shaft body 1 moves smoothly and has no obvious shaking in the pin hole 19, the outer side of the shaft body 1 is slidably connected to the inner side of the pin hole 19, the outer side of the connecting head 18 is provided with a fixed hole 20, the fixed hole 20 is used to cooperate with the fixed column 15 of the positioning washer 12, thereby realizing the connection and fixation between the connecting head 18 and the positioning washer 12.
[0040] The outer side of the shaft body 1 is slidably connected with the positioning pad 12, when the shaft body 1 bears the load, the positioning pad 12 can play a certain buffering and load dispersion effect, and can transmit part of the load on the shaft body 1 to the connector one 18 through the fixing column 15, so as to avoid the local overloading of the shaft body 1 and cause wear or damage, prolong the service life of the shaft body 1 and the entire assembly structure, and prevent the shaft body 1 from rotating in the pin hole 19 of the connector one 18 through the cooperation of the positioning column 14 on the outer side thereof and the slot 13 on the outer side of the shaft body 1, so as to ensure that the shaft body 1 works at a specific angle and position, which is very important for mechanical devices that need to accurately control the rotation angle or position of the shaft body 1, and can ensure the accuracy and reliability of mechanical action, further enhancing the stability of the entire assembly structure and preventing the parts from loosening or mispositioning during work.
[0041] The outer side of the positioning pad 12 is fixedly connected with the positioning column 14, the cooperation of the positioning column 14 and the slot 13 can prevent the positioning pad 12 from rotating on the shaft body 1 and ensure the stability of the position, the outer side of the shaft body 1 is provided with the slot 13, the slot 13 cooperates with the positioning column 14 of the positioning pad 12 to realize accurate positioning of the shaft body 1, prevent the shaft body 1 from rotating in the pin hole 19 of the connector one 18, ensure that the shaft body 1 maintains a specific angle and position during work, and further ensure the accuracy and stability of the action of the related mechanical device, and the outer side of the positioning column 14 is slidably connected to the inner side of the slot 13.
[0042] The outer side of the positioning pad 12 is fixedly connected with the fixing column 15, the fixing column 15 can fix the positioning pad 12 and the connector one 18 together, further enhancing the stability of the entire assembly structure, and the outer side of the fixing column 15 is slidably connected to the inner side of the fixing hole 20.
[0043] One end of the shaft body 1 is provided with the insertion hole 16, the insertion hole 16 can accommodate subsequent components and play a certain auxiliary positioning role, ensuring the integrity and stability of the entire assembly structure, the inner side of the insertion hole 16 is slidably connected with the cotter pin 17, the cotter pin 17 is used to prevent the shaft body 1 from being pulled out of the pin hole 19 of the connector one 18, and plays a safety locking role, and the outer side of the shaft body 1 is rotatably connected with the connector two 21, the connector two 21 can be connected with other components to realize force transmission and movement functions.
[0044] Working principle: when the lubricated pin shaft assembly structure needs to be operated, first, if you want to add lubricating oil, pull the pull rod 11 fixedly connected with the piston 7 outward, make the piston 7 overcome the thrust of the spring 10, retract into the oil filling hole 9, open the sealing cover of the oil filling hole 9, inject lubricating oil into the oil storage cavity 2 through the oil filling hole 9, after the injection is completed, release the pull rod 11, the spring 10 stably pushes the piston 7 outward, delivers the lubricating oil in the oil storage cavity 2 to the main oil way 3 and the spiral auxiliary oil way 5, the lubricating oil flows out from the plurality of main oil outlet holes 4 into the inner side of the connecting head two 21 matched with the shaft body 1 through the main oil way 3, and flows out from the plurality of auxiliary oil outlet holes 6 through the auxiliary oil way 5, realizes the lubrication of the connecting part, in the process, the rubber ring 8 fixed in the outer side groove of the piston 7 is in close contact with the inner side of the oil storage cavity 2, preventing the lubricating oil from leaking;
[0045] At the same time, when the shaft body 1 works, the shaft body 1 slides in the pin hole 19 of the connecting head one 18, the positioning gasket 12 cooperates with the insertion slot 13 on the outer side of the shaft body 1 through the positioning column 14, preventing the shaft body 1 from rotating in the pin hole 19, ensuring that the shaft body 1 works at a specific angle and position, the fixed column 15 of the positioning gasket 12 cooperates with the fixed hole 20 of the connecting head one 18, realizing the connection and fixation of the two, the split pin 17 in the opening of the insertion hole 16 of the shaft body 1 prevents the shaft body 1 from coming out of the pin hole 19, and can realize the positioning of the pin shaft after the pin shaft is inserted into the pin hole 19, ensuring the stability of the pin shaft, avoiding the rotation and shaking of the pin shaft, and affecting the use effect.
[0046] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.
Claims
1. A pin assembly structure for easy lubrication, comprising a shaft body (1), characterized in that: The inner side of the shaft (1) is provided with a lubrication mechanism, and the outer side of the shaft (1) is provided with a positioning mechanism. The lubrication mechanism includes an oil reservoir (2), which is located on the inner side of the shaft (1). An oil pump assembly is slidably connected to the inner side of the oil reservoir (2). An oil filling hole (9) is located on the outer side of the shaft (1). A main oil passage (3) is located on the inner side of the shaft (1). Multiple main oil outlet holes (4) are located on the outer side of the shaft (1). The main oil outlet holes (4) intersect with the main oil passage (3). Multiple secondary oil passages (5) are located on the inner side of the shaft (1). Multiple secondary oil outlet holes (6) are located on the outer side of the shaft (1). The secondary oil outlet holes (6) intersect with the secondary oil passages (5).
2. The pin assembly structure for easy lubrication according to claim 1, characterized in that: The oil pump assembly includes a piston (7), the outer side of which is slidably connected to the inner side of the oil storage chamber (2). A groove is provided on the outer side of the piston (7), and a rubber ring (8) is fixedly connected to the inner side of the groove of the piston (7). The outer side of the rubber ring (8) is slidably connected to the inner side of the oil storage chamber (2).
3. The pin assembly structure for easy lubrication according to claim 2, characterized in that: A pull rod (11) is fixedly connected to the outside of the piston (7), and the outside of the pull rod (11) is slidably connected to the inside of the shaft (1).
4. The pin assembly structure for easy lubrication according to claim 2, characterized in that: A spring (10) is fixedly connected to the outside of the piston (7), and the end of the spring (10) away from the piston (7) is fixedly connected to the inside of the shaft (1).
5. The pin assembly structure for easy lubrication according to claim 1, characterized in that: The positioning mechanism includes a connector (18), a pin hole (19) is provided on the inner side of the connector (18), the outer side of the shaft (1) is slidably connected to the inner side of the pin hole (19), a fixing hole (20) is provided on the outer side of the connector (18), and a positioning pad (12) is slidably connected to the outer side of the shaft (1).
6. The pin assembly structure for easy lubrication according to claim 5, characterized in that: The positioning pad (12) is fixedly connected to a positioning post (14) on the outside, and a slot (13) is provided on the outside of the shaft (1). The outside of the positioning post (14) is slidably connected to the inside of the slot (13).
7. The pin assembly structure for easy lubrication according to claim 5, characterized in that: The positioning pad (12) is fixedly connected to a fixing post (15) on its outer side, and the outer side of the fixing post (15) is slidably connected to the inner side of the fixing hole (20).
8. The pin assembly structure for easy lubrication according to claim 1, characterized in that: One end of the shaft (1) is provided with a socket (16), and a cotter pin (17) is slidably connected to the inner side of the socket (16). A connector (21) is rotatably connected to the outer side of the shaft (1).