Grease lubrication sleeve for trailer axle

Abstract

The utility model relates to the technical field of trailers, and discloses a grease lubrication sleeve for a trailer axle, which comprises a sleeve main body, a first annular oil guide groove, a second annular oil guide groove and an oil guide chute, the first annular oil guide groove is positioned at the head position of the sleeve main body, and the second annular oil guide groove is positioned at the middle position of the sleeve main body; a plurality of oil injection holes penetrating through the interior of the sleeve body are formed in the second annular oil guide groove, and lubricating oil grooves communicating with the oil injection holes are formed in the inner circumferential face of the sleeve body. According to the grease lubrication sleeve, the oil injection hole is formed in the second annular oil guide groove in the middle of the sleeve body, so that grease can quickly reach the head, the middle and the tail of the sleeve without long-distance conveying after entering the sleeve body from the oil injection hole. By means of the design, the grease diffusion lubrication path is greatly shortened, and it is ensured that in the initial stage of use, all parts of the sleeve effectively solve the lubrication dead angle problem.

Description

TECHNICAL FIELD

[0001] The utility model relates to trailer technology field especially relates to a grease lubrication sleeve for trailer axle. BACKGROUND

[0002] In the lubrication system of trailer axle, metal sleeve as the key lubrication component, its performance directly influences the service life and operation safety of axle. At present, the metal sleeve of trailer axle generally adopts the oil injection mode through grease gun filling. In this mode, the pressure generated by the oil gun is used to make the grease seep into the inner ring through the oil injection hole on the outer circumferential surface of the metal sleeve, and then the grease is diffused in the sleeve by the rotation of the shaft body, so as to achieve the purpose of lubricating the axle.

[0003] However, the existing grease lubrication sleeve has defects in actual application. Among them, the more prominent problem is that the position of the oil injection hole is not reasonable. Because the oil injection hole is very close to the head of the metal sleeve, during oil injection, the grease can only be transported to other parts of the sleeve by the internal oil groove. In actual operation, the oil gun pressure is often insufficient, which makes it difficult for the metal sleeve to obtain enough grease for lubrication at the initial stage of use. In the long-term high-speed operation of the trailer axle, the lack of grease lubrication at the end of the metal sleeve will aggravate the wear of this part, seriously affect the overall service life of the axle, and increase the vehicle maintenance cost and safety hazards.

[0004] In summary, the existing grease lubrication sleeve has obvious defects in structural design, and cannot meet the growing demand for trailer operation safety and efficient lubrication. Therefore, the existing technology needs to be improved and improved. UTILITY MODEL CONTENTS

[0005] In view of the above shortcomings of the prior art, the utility model aims to provide a grease lubrication sleeve for trailer axle, which aims to ensure that the tail end of the grease lubrication sleeve can also obtain enough grease for effective lubrication of the axle at the initial stage of use.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The application discloses a grease lubrication sleeve for a trailer axle, which comprises a sleeve body, a first annular oil guide groove and a second annular oil guide groove which are arranged on the outer circumferential surface of the sleeve body and coaxial with the sleeve, and a plurality of oil guide inclined grooves which are in communication with the first annular oil guide groove and the second annular oil guide groove, wherein the first annular oil guide groove is arranged at the head position of the sleeve body, the second annular oil guide groove is arranged at the middle position of the sleeve body, a plurality of oil injection holes which penetrate the interior of the sleeve body are arranged on the second annular oil guide groove, and a lubricating oil groove which is in communication with the oil injection holes is arranged on the inner circumferential surface of the sleeve body and can extend to the head and tail of the sleeve body.

[0008] As a further improvement of the above technical solution, the number of the oil guide inclined grooves is the same as that of the oil injection holes, and the outlet of the oil guide inclined groove faces the oil injection hole.

[0009] As a further improvement of the above technical solution, the angle between the lubricating oil groove and the horizontal line is 30° in the top view.

[0010] As a further improvement of the above technical solution, the inner circumferential surface of the sleeve body is densely provided with oil storage blind holes.

[0011] As a further improvement of the above technical solution, the sleeve body is a metal sleeve, and an axial extending disconnection gap is arranged on the sleeve body.

[0012] As a further improvement of the above technical solution, the disconnection gap divides the top of the sleeve body into two halves, the edge of one half is provided with two clamping blocks, and the edge of the other half is provided with anti-disengagement notches which are matched with the clamping blocks.

[0013] The grease lubrication sleeve provided by the application has the following beneficial effects: the oil injection holes are arranged on the second annular oil guide groove at the middle part of the sleeve body, so that the grease can quickly reach the head, middle part and tail of the sleeve body without long distance transportation after entering the interior of the sleeve body from the oil injection holes. The design greatly shortens the grease diffusion lubrication path, ensures that each part of the sleeve, especially the last end, can be sufficiently lubricated in the initial stage of use, effectively solves the lubrication dead angle problem, ensures that each part of the sleeve can be sufficiently lubricated during the long-term high-speed operation of the trailer axle, reduces the loss caused by local wear and tear, and significantly prolongs the overall service life of the axle. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a perspective view of the grease lubrication sleeve.

[0015] Fig. 2 It is a sectional view of the grease lubrication sleeve.

[0016] Fig. 3The schematic view of the grease lubricating sleeve on the axle and the grease gun filling grease into the grease lubricating sleeve.

[0017] Main element symbol explanation: 1-sleeve main body, 11-first annular oil guide groove, 12-second annular oil guide groove, 13-oil guide inclined groove, 14-oil injection hole, 15-lubricating oil groove, 16-oil storage blind hole, 17-disconnection gap, 18-clamping block, 19-anti-falling notch, 2-axle, 3-grease gun. DETAILED DESCRIPTION

[0018] The utility model provides a kind of grease lubricating sleeve for trailer axle, to make the purpose, technical scheme and effect of the utility model more clear, definite, the following referring to drawing and taking example further detailed explanation of the utility model is described in this paper.It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the protection scope of the utility model.

[0019] Please refer to Figs. 1 to 3 The utility model provides a kind of grease lubricating sleeve for trailer axle, including sleeve main body 1, first annular oil guide groove 11 and second annular oil guide groove 12 being arranged on the outer circumferential surface of sleeve main body 1 and being coaxial with sleeve, and multiple oil guide inclined grooves 13 being communicated with first annular oil guide groove 11 and second annular oil guide groove 12, the first annular oil guide groove 11 is located at the head position of sleeve main body 1, the second annular oil guide groove 12 is located at the middle position of sleeve main body 1, a plurality of oil injection holes 14 are formed in the second annular oil guide groove 12 and extend through the inside of sleeve main body 1, lubricating oil groove 15 is formed in the inner circumferential surface of sleeve main body 1 and communicated with oil injection hole 14, and the lubricating oil groove 15 can extend to the head and tail of sleeve main body 1.

[0020] The grease lubricating sleeve is stationary in practical application, when the grease lubricating sleeve is used to lubricate trailer axle 2, grease is injected into the first annular oil guide groove 11 located at the head position of sleeve main body 1 by grease gun 3. Since the first annular oil guide groove 11 is coaxial with the sleeve, the grease can be distributed relatively uniformly in the first annular groove. Subsequently, the grease injected into the first annular oil guide groove 11 flows along the multiple oil guide inclined grooves 13 to the second annular oil guide groove 12 located at the middle position of sleeve main body 1 under the action of the pressure of the oil gun. When the grease reaches the second annular oil guide groove 12, it flows into the lubricating oil groove 15 through the oil injection hole 14. Since the oil injection point is located at the middle position of sleeve main body 1, and the lubricating oil groove 15 can extend to the head and tail of sleeve main body 1, during the operation of trailer axle 2, the rotation of the axle body drives the grease to spread in the lubricating oil groove 15, so that the grease can cover the entire inner surface of sleeve main body 1, thereby achieving omnidirectional and uniform lubrication of trailer axle 2.

[0021] Compared with the prior art, the oil injection hole 14 is close to the head of the metal sleeve, and the oil is only transported by the oil groove, and the end of the sleeve is difficult to obtain sufficient lubrication when the pressure of the oil gun is insufficient, the grease lubricating sleeve provided by the utility model sets the oil injection hole 14 on the second annular oil guide groove 12 in the middle of the sleeve main body 1, so that the oil can quickly reach the head, the middle and the tail of the sleeve without long-distance transportation after entering the inside of the sleeve main body 1. This design greatly shortens the path of grease diffusion lubrication, ensures that each part of the sleeve, especially the last end, can obtain sufficient grease lubrication in the initial stage of use, effectively solves the problem of lubrication dead angle. In the long-term high-speed operation process of the trailer axle 2, it is ensured that each part of the sleeve can be fully lubricated, the loss caused by local wear is reduced, and the overall service life of the axle 2 is significantly prolonged.

[0022] The number of the oil guide chute 13 is the same as that of the oil injection hole 14, and the outlet of the oil guide chute 13 faces the oil injection hole 14. By setting in this way, the oil flowing out of the first annular oil guide groove 11 can flow into each oil injection hole 14 through the oil guide chute 13. Avoid the loss caused by the disorder of the path in the transmission process, ensure that the oil can enter the oil injection hole 14 from the oil guide chute 13 with high efficiency, and then quickly reach the lubricating oil groove 15 on the inner circumferential surface of the sleeve main body 1, and improve the oil transmission efficiency of the overall lubrication system.

[0023] In the embodiment, the oil guide chute 13 and the oil injection hole 14 are both provided with three, which ensures that the amount of oil received by each oil injection hole 14 is relatively balanced, which makes the distribution of oil in the lubricating oil groove 15 on the inner circumferential surface of the sleeve main body 1 more uniform, avoids the situation that the local lubrication of the sleeve is excessive or insufficient due to too much or too little oil injection of individual oil injection holes 14, and further enhances the stability of the lubrication system of the trailer axle 2, and continuously ensures that each part of the axle 2 can be fully and uniformly lubricated.

[0024] It can be understood that, in the oil injection process of the oil gun, the design that the outlet of the oil guide chute 13 faces the oil injection hole 14 can maximize the use of the pressure generated by the oil gun. The oil can directly flow along the direction of the oil guide chute 13 to the oil injection hole 14 in a relatively concentrated manner, reducing the loss of pressure in the transmission process, so that the pressure of the oil gun can more effectively act on the oil injection process. Even in the case that the pressure of the oil gun is not very large, enough oil can also be ensured to enter the oil injection hole 14, thereby providing sufficient lubrication for the axle 2.

[0025] The angle between the lubricating oil groove 15 and the horizontal line is 30° in the perspective view. Under the joint action of gravity and centrifugal force generated by the rotation of the axle 2, the oil can obtain more suitable flow power in the lubricating oil groove 15. Compared with the horizontally arranged lubricating oil groove 15, the inclined angle makes the oil more easily flow to the head and tail of the sleeve body 1 under the action of the gravity component, promotes the rapid diffusion of the oil in the entire sleeve, reduces the accumulation of the oil in the local area, and thus more efficiently realizes the lubrication of each part of the axle 2. The centrifugal force generated by the rotation of the axle 2 can cooperate with the inclined angle of the lubricating oil groove 15. The 30° angle can better guide the oil to flow along the direction of the lubricating oil groove 15, so that the oil can be uniformly distributed on the surface of the axle 2, and the lubrication effect is effectively improved.

[0026] Preferably, the inner circumferential surface of the sleeve body 1 is densely covered with oil storage blind holes 16. The inner circumferential surface of the sleeve body 1 densely covered with the oil storage blind holes 16 can store a large amount of lubricating oil after the oil is injected. When the oil in the lubricating oil groove 15 is consumed during the operation of the trailer axle 2, the oil stored in the oil storage blind holes 16 is slowly released to the contact surface of the sleeve and the axle 2 under the action of the centrifugal force generated by the rotation of the axle body and the pressure difference, continuously replenishing the lubricating oil, ensuring that the axle 2 is always lubricated with sufficient oil during long-time operation, effectively prolonging the interval time between two oil injections, and realizing long-acting lubrication.

[0027] In fact, when the axle 2 contacts and rotates relative to the inner circumferential surface of the sleeve, a thicker and more stable lubricating film can be formed between the oil in the oil storage blind holes 16 and the two, effectively buffering the friction between the axle 2 and the sleeve. This not only reduces the heat generated by direct friction, but also reduces the degree of wear of the metal surface, further prolongs the service life of the sleeve and the axle 2, and improves the reliability of the operation of the axle 2.

[0028] In the embodiment, the sleeve body 1 is a metal sleeve, and the sleeve body 1 is provided with an axial discontinuous gap 17. The sleeve body 1 is made of metal, has high strength and rigidity, and can ensure the structural stability during the operation of the axle 2. There may be a large operation difficulty when installing on the axle 2. The axial discontinuous gap 17 on the sleeve body 1 makes the sleeve have a certain elastic deformation ability. During installation, the inner diameter of the sleeve can be changed by appropriately extruding or expanding the sleeve, so that the sleeve can be easily installed on the axle 2, the installation difficulty and the required installation force are reduced, the installation efficiency is improved, and the damage to the sleeve and the axle 2 during installation is reduced.

[0029] In addition, during the operation of the trailer axle 2, the metal sleeve will expand due to heat generated by friction and the like. If the sleeve does not have the disconnection gap 17, the stress generated by the thermal expansion cannot be released, which can cause the sleeve to deform, crack, and even affect the normal operation of the axle 2. The presence of the disconnection gap 17 provides space for the thermal expansion of the sleeve. When the sleeve expands due to heat, the disconnection gap 17 can appropriately decrease, thereby releasing the thermal stress and avoiding damage to the sleeve due to thermal expansion, ensuring the stability and reliability of the sleeve in different temperature environments.

[0030] Further, the disconnection gap 17 divides the top part of the sleeve body 1 into two halves, one of which has two clamping blocks 18 formed on the edge thereof, and the other of which has anti-disengagement notches 19 matching the clamping blocks 18 formed on the edge thereof. The top part of the sleeve body 1 originally divided into two halves due to the disconnection gap 17 is tightly connected together, so that the sleeve body 1 is structurally formed as a relatively complete whole. This helps to improve the overall strength and rigidity of the sleeve body 1, so that it can better withstand various forces and torques transmitted by the axle 2.

[0031] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] It can be understood that, for those skilled in the art, equivalent replacement or change can be made according to the technical scheme of the present application and the inventive concept, and all such changes or replacements shall fall within the scope of protection of the present application.

Claims

1. A grease lubrication sleeve for a trailer axle, characterized by, The sleeve body comprises a first annular oil guide groove and a second annular oil guide groove which are coaxial with the sleeve and are arranged on the outer circumferential surface of the sleeve body, and a plurality of oil guide inclined grooves which communicate with the first annular oil guide groove and the second annular oil guide groove, the first annular oil guide groove is located at the head position of the sleeve body, the second annular oil guide groove is located at the middle position of the sleeve body, a plurality of oil injection holes which extend through the inside of the sleeve body are arranged on the second annular oil guide groove, a lubricating oil groove which communicates with the oil injection holes is arranged on the inner circumferential surface of the sleeve body, and the lubricating oil groove can extend to the head and tail of the sleeve body.

2. The grease lubrication sleeve for a trailer axle of claim 1, wherein, The number of the oil guide inclined grooves is the same as that of the oil injection holes, and the outlets of the oil guide inclined grooves are directed to the oil injection holes.

3. The grease lubrication sleeve for a trailer axle of claim 1, wherein, The angle between the lubricating oil groove and the horizontal line is 30° in the top view.

4. The grease lubrication sleeve for a trailer axle of any of claims 1-3, wherein, The inner circumferential surface of the sleeve body is densely covered with oil storage blind holes.

5. The grease lubrication sleeve for a trailer axle of claim 1, wherein, The sleeve body is a metal sleeve, and an axial discontinuous gap is arranged on the sleeve body.

6. The grease lubrication sleeve for a trailer axle defined in claim 5, wherein, The discontinuous gap divides the top of the sleeve body into two halves, the edge of one half is provided with two clamping blocks, and the edge of the other half is provided with a disengagement notch which matches the clamping blocks.

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