Grease filling structure for output end of yaw gearbox
By introducing a filling tube and grease storage space at the output end of the yaw gear box, the grease filling process is simplified, and the problems of difficult and high cost of processing in the lower box are solved, and more efficient grease filling and lower production costs are achieved.
Patent Information
- Application Number
- CN202423037259.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-12-10
AI Technical Summary
The lower box with the grease filling structure of the existing yaw gear box output end is difficult to process, the processing process is complicated and it is easy to generate waste, which increases manufacturing cost.
The design of the filling tube and the fat storage space is adopted. The fat is added directly to the fat storage space through the filling tube, which simplifies the fat addition process and reduces the damage to the lower box.
It reduces the processing difficulty and processing waste rate of the lower box, improves the mechanical properties of the lower box, and reduces production costs.
Smart Images
Figure CN223306276U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gear boxes, in particular to a grease filling structure at the output end of a yaw gear box. Background Art
[0002] The output end of the yaw gearbox generally has two tapered roller bearings, the upper bearing is usually lubricated with oil, and the lower bearing is usually lubricated with grease. The existing grease filling structure of the output end of the yaw gearbox is as follows: Figure 1 As shown in the figure, the oil seal 3 forms a seal between the output gear shaft 6 and the lower housing 4, separating the oil in the upper bearing 2 from the grease in the lower bearing 5. Due to the installation environment of the yaw gearbox, the grease filling cup 1 must be located above the mounting flange of the lower housing 4. Therefore, two intersecting holes must be machined into the lower housing 4 to form a grease channel. However, the grease channel requires drilling in at least two directions, which is not conducive to machining and positioning, and the machining process is relatively complicated. Improper drilling can also easily result in scrap, increasing manufacturing costs.
[0003] Therefore, how to reduce the difficulty of processing the lower box body is a technical problem that technical personnel in this field currently need to solve. Utility Model Content
[0004] The utility model aims to provide a grease filling structure at the output end of a yaw gearbox, which can reduce the difficulty of machining a lower box body.
[0005] To achieve the above objectives, the present invention provides the following technical solutions:
[0006] A grease filling structure for an output end of a yaw gearbox, comprising:
[0007] The lower box body includes a first tube and a second tube with a stepped hole structure, and a mounting flange arranged on the circumference of the first tube. The output end gear shaft is passed through the lower box body, a first bearing is arranged between the output end gear shaft and the first tube, and a second bearing is arranged between the output end gear shaft and the second tube. An oil seal for sealing the first bearing is arranged in the first tube, and a grease storage space is reserved in the second tube, and the grease storage space is located between the first tube and the second bearing.
[0008] The filling pipe is a tubular structure, one end of which is installed through the mounting flange and the other end is connected to the grease storage space.
[0009] Preferably, a threaded through hole communicating with the fat storage space is provided through the side wall of the second tube, and the threaded through hole is in contact with the end surface of the first tube.
[0010] Preferably, both ends of the filling pipe are provided with external threads, and the ends of the filling pipe can be threadedly connected to the threaded through hole.
[0011] Preferably, a filling cap is installed at the end of the filling pipe away from the threaded through hole, and an internal thread that cooperates with the external thread is provided inside the filling cap.
[0012] Preferably, the bottom of the filling cap is provided with a blind hole whose diameter is smaller than the outer diameter of the filling pipe.
[0013] Preferably, a mounting hole is provided through the mounting flange along the axial direction of the second cylinder, and the filling pipe is provided in the mounting hole.
[0014] Preferably, there is a clearance fit between the mounting hole and the outer circumference of the filling pipe.
[0015] Preferably, the outer diameter of the filling cap is larger than the diameter of the mounting hole to limit the movement of the filling pipe.
[0016] Preferably, a countersunk hole is provided at the end of the threaded through hole away from the output end gear shaft, and the countersunk hole is used for applying sealant.
[0017] Preferably, the filling pipe and the filling cap are both made of plastic, and both are formed by injection molding.
[0018] Compared with the above-mentioned background technology, the utility model provides a yaw gearbox output end grease filling structure, including: a lower box body and a filling pipe; the lower box body includes a first cylinder and a second cylinder with a stepped hole structure, and a mounting flange arranged on the circumference of the first cylinder, an output end gear shaft is passed through the lower box body, a first bearing is arranged between the output end gear shaft and the first cylinder, a second bearing is arranged between the output end gear shaft and the second cylinder, an oil seal for sealing the first bearing is arranged in the first cylinder, a grease storage space is reserved in the second cylinder, and the grease storage space is located between the first cylinder and the second bearing; the filling pipe is a tubular structure, one end of which is installed through the mounting flange, and the other end is connected to the grease storage space.
[0019] Specifically, the utility model reduces damage to the lower box body by inserting a filling pipe connected to the grease storage space on the side wall of the second cylinder, and passing the inlet end of the filling pipe through the mounting flange; in this way, each time greasing is performed, it is only necessary to add grease to the inlet end of the filling pipe, and the grease will flow into the grease storage space along the filling pipe and then be added to the second bearing; such a setting is simpler than the original greasing structure, and causes less damage to the lower box body structure, so that the mechanical properties of the lower box body are better, and it can reduce the processing cost of the lower box body, reduce the processing scrap rate, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.
[0021] Figure 1 It is a schematic diagram of the fat-adding structure in the prior art;
[0022] Figure 2 A schematic diagram of the filling structure provided by an embodiment of the present utility model;
[0023] Figure 3 for Figure 2 A magnified view of the structure at position Ⅰ in the middle;
[0024] Figure 4 for Figure 2 Enlarged view of the structure at center II.
[0025] in:
[0026] 1- oil filling cup, 2- upper bearing, 3- oil seal, 4- lower housing, 5- lower bearing, 6- output end gear shaft;
[0027] 100 - lower housing, 110 - first cylinder, 111 - first bearing, 112 - oil seal, 120 - second cylinder, 121 - second bearing, 122 - grease storage space, 123 - threaded through hole, 124 - countersunk hole, 130 - mounting flange, 131 - mounting hole, 140 - output end gear shaft;
[0028] 200-filling pipe;
[0029] 300-filling cap, 310-blind hole. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0031] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0032] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left" and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the positions or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limitations of the present invention.
[0033] The utility model aims to provide a grease filling structure at the output end of a yaw gearbox, which can reduce the difficulty of machining a lower box body.
[0034] To achieve the above objectives, the present invention provides the following technical solutions:
[0035] See also Figures 2 to 4 , this embodiment provides a yaw gearbox output end grease filling structure, including: a lower box body 100 and a filling pipe 200; the lower box body 100 includes a first tube 110 and a second tube 120 with a stepped hole structure, and a mounting flange 130 arranged on the circumference of the first tube 110, an output end gear shaft 140 is passed through the lower box body 100, a first bearing 111 is arranged between the output end gear shaft 140 and the first tube 110, a second bearing 121 is arranged between the output end gear shaft 140 and the second tube 120, an oil seal 112 for sealing the first bearing 111 is arranged in the first tube 110, a grease storage space 122 is reserved in the second tube 120, and the grease storage space 122 is located between the first tube 110 and the second bearing 121; the filling pipe 200 is a tubular structure, one end of which is installed through the mounting flange 130, and the other end is connected to the grease storage space 122.
[0036] Specifically, if Figure 2As shown, the lower box body 100 in this embodiment is a cylindrical structure, including a first tube 110 at the top and a second tube 120 at the bottom. It should be noted that the inner diameter of the first tube 110 is slightly smaller than the inner diameter of the second tube 120, and a circle of mounting flange 130 is provided on the outer circumference of the top of the first tube 110, and an output end gear shaft 140 is vertically penetrated inside the entire lower box body 100. The output end gear shaft 140 is specifically a stepped shaft, and its shaft body diameter located in the first tube 110 is smaller, and its shaft body diameter located in the second tube 120 is larger. Furthermore, the part of the output end gear shaft 140 located in the first tube 110 is installed through a first bearing 111, and a limited boss is provided in the first tube 110 to clamp the first bearing 111. The output end gear shaft 140 is 40 is passed through the inside of the first bearing 111. Similarly, there is a protrusion inside the second tube 120 for clamping the second bearing 121. The second bearing 121 is installed on the inner wall of the second tube 120 to support the output end gear. However, it should be noted that a certain space is reserved between the upper end face of the second bearing 121 and the lower end face of the first tube 110. This space is a grease storage space 122. That is, when it is necessary to grease the second bearing 121, grease can be added to this space, and then due to the rotation of the second bearing 121, the grease will naturally transfer to the second bearing 121. At the same time, in order to ensure that the oil in the first bearing 111 will not fall into the second bearing 121, two circles of oil seals 112 are arranged side by side inside the first tube 110 and below the first bearing 111.
[0037] In this embodiment, in order to facilitate the filling of grease into the grease storage space 122 and reduce damage to the interior of the lower box body 100, a filling pipe 200 is provided on the outside of the lower box body 100. The lower end of the filling pipe 200 is inserted into the inner wall of the second cylinder 120 and is connected to the grease storage space 122. In order to facilitate grease filling, the other end is passed through the mounting flange 130 so that the upper end thereof extends out of the mounting flange 130. When grease needs to be added to the second bearing 121, it is only necessary to fill it from the inlet of the filling pipe 200 above the mounting flange 130.
[0038] That is to say, the utility model reduces damage to the lower box body 100 by inserting a filling pipe 200 connected to the grease storage space 122 on the side wall of the second cylinder 120, and passing the inlet end of the filling pipe 200 through the mounting flange 130; in this way, each time greasing is performed, it is only necessary to add grease to the inlet end of the filling pipe 200, and the grease will flow into the grease storage space 122 along the filling pipe 200, and then be added to the second bearing 121; such a setting is simpler than the original greasing structure, and causes less damage to the structure of the lower box body 100, so that the mechanical properties of the lower box body 100 are better, and the processing cost of the lower box body 100 can be reduced, and the processing scrap rate and production cost can be reduced.
[0039] Preferably, a threaded through hole 123 communicating with the fat storage space 122 is provided through the side wall of the second tube 120 , and the threaded through hole 123 is in contact with the end surface of the first tube 110 .
[0040] Specific as Figure 4 As shown, in this embodiment, in order to insert the filling pipe 200, a threaded through hole 123 is opened on the side wall of the second barrel 120. The threaded through hole 123 horizontally passes through the side wall of the second barrel 120, and in this embodiment, the threaded through hole 123 is arranged at the junction of the second barrel 120 and the first barrel 110.
[0041] Furthermore, both ends of the filling pipe 200 are provided with external threads, and the ends of the filling pipe 200 can be threadedly connected to the threaded through hole 123 .
[0042] It can be understood that in order to facilitate the installation of the filling pipe 200, external threads matching the threaded through hole 123 are provided at both ends of the filling pipe 200. With this arrangement, when installing the filling pipe 200, it is only necessary to screw the filling pipe 200 into the threaded through hole 123. In this way, the filling pipe 200 will not detach from the threaded through hole 123. This installation method is simple, convenient, fast and stable.
[0043] In this embodiment, the threaded through hole 123 provided on the side wall of the second barrel 120 and the external thread on the end of the filling pipe are intended to be used in conjunction with each other to reduce the difficulty of installation. A through hole without internal threads can also be provided on the side wall of the second barrel 120, and its inclination direction can also be adjusted according to actual conditions. As long as it can be ensured that the filling pipe 200 inserted therein can be connected with the fat storage space 122 and that the filling pipe 200 does not separate from the second barrel 120, this article does not make any specific restrictions.
[0044] Preferably, a filling cap 300 is installed at the end of the filling pipe 200 away from the threaded through hole 123 , and an internal thread that matches the external thread is provided inside the filling cap 300 .
[0045] In this embodiment, the other end of the filling pipe 200 passes through the mounting flange 130 and comes out from the upper side of the mounting flange 130. In order to prevent dust from entering from the port of the filling pipe 200 when the second bearing 121 is not greased, a filling cap 300 is provided at this end. The filling cap 300 is provided with an internal thread to ensure that the filling cap 300 can be screwed to the end of the filling pipe 200; in this way, the filling cap 300 can seal the filling pipe 200.
[0046] Of course, this article seals the filling pipe 200 by providing a cap structure at the end of the filling pipe 200, and the filling pipe 200 can also be sealed by other means, such as installing a plug at the port of the filling pipe 200. This article does not specifically limit the sealing form of the filling pipe 200.
[0047] Preferably, a blind hole 310 having a diameter smaller than the outer diameter of the filling pipe 200 is provided at the bottom of the filling cap 300 .
[0048] Specifically, if Figure 3 As shown, a blind hole 310 of a smaller depth is provided at the bottom of the filling cap 300. When the filling cap 300 is in the installed state, the blind hole 310 is located just above the channel in the filling pipe 200. Therefore, a sealing gasket can be installed in the blind hole 310 to enhance the sealing effect of the filling cap 300.
[0049] Preferably, a mounting hole 131 is provided through the mounting flange 130 along the axial direction of the second tube 120 , and the filling pipe 200 is passed through the mounting hole 131 .
[0050] Specifically, if Figure 3 As shown, in order to facilitate the installation of the filling pipe 200, a mounting hole 131 is provided on the mounting flange 130, and the filling pipe 200 can be passed through the mounting hole 131. At the same time, in order to reduce the difficulty of setting the mounting hole 131 on the mounting flange 130, the mounting hole 131 is vertically arranged, which not only reduces the processing difficulty, but also facilitates the installation of the filling pipe 200 and the injection of grease in the filling pipe 200.
[0051] Of course, the extension direction of the mounting hole 131 can also be adjusted according to actual conditions, and is not specifically limited herein.
[0052] Preferably, there is a clearance fit between the mounting hole 131 and the outer circumference of the filling pipe 200 .
[0053] It is understandable that in order to reduce the difficulty of installing the filling pipe 200, the diameter of the installation hole 131 in this embodiment is slightly larger than the outer diameter of the filling pipe 200, so that the operator can easily and smoothly pass the filling pipe 200 therethrough.
[0054] Preferably, the outer diameter of the filling cap 300 is larger than the diameter of the mounting hole 131 to limit the movement of the filling pipe 200 .
[0055] Furthermore, since there is a clearance fit between the mounting hole 131 and the filling pipe 200, in order to prevent the filling pipe 200 from falling downward, the outer diameter of the filling cap 300 in this embodiment needs to be larger than the diameter of the mounting hole 131. In this way, the filling cap 300 cannot fall from the mounting hole 131, thereby restricting the filling pipe 200 from detaching from the mounting hole 131. In this way, the filling cap 300 plays a role in limiting the filling pipe 200.
[0056] Preferably, a countersunk hole 124 is provided at the end of the threaded through hole 123 away from the output end gear shaft 140 , and the countersunk hole 124 is used for applying sealant.
[0057] Specific as Figure 4 As shown, a countersunk hole 124 is provided at the right end portion of the threaded through hole 123. In this embodiment, after the filling pipe 200 is installed, sealant can be applied in the countersunk hole 124. This not only strengthens the connection between the filling pipe 200 and the threaded through hole 123, but also prevents grease from flowing out of the connection gap between the two.
[0058] Preferably, the filling pipe 200 and the filling cap 300 are both made of plastic, and both are formed by injection molding.
[0059] In this embodiment, the filling pipe 200 and the filling cap 300 are both made of plastic with moderate hardness and softness. The selected plastic must first ensure that an external thread can be set on the outer circumferential surface, and secondly ensure that it can be bent with external force, so as to increase the applicable scenarios of the filling pipe 200; preferably, the filling pipe 200 and the filling cap 300 in this embodiment are both formed by injection molding, so as to reduce the processing difficulty and cost of both.
[0060] In summary, this article provides a grease filling structure for the output end of a yaw gearbox. Lubrication is performed using a filling pipe 200, which is sealed and positioned by a filling cap 300. The lower end of the filling pipe 200 is externally threaded. A threaded through-hole 123 is machined into the sidewall of the second barrel 120 of the lower housing 100. The lower end of the filling pipe 200 mates with the threaded through-hole 123 provided in the second barrel 120, forming a threaded connection. The mounting flange 130 of the lower housing 100 is machined with a vertical mounting hole 131. The outer diameter of the filling pipe 200 forms a clearance fit with the vertical mounting hole 131 of the mounting flange 130. The upper end of the filling pipe 200 is also processed with an external thread, and the filling cap 300 is processed with a thread that matches the external thread. The upper end of the filling pipe 200 cooperates with the filling cap 300 to form a threaded connection; the outer circle of the filling cap 300 is larger than the diameter of the mounting hole 131 to prevent the filling pipe 200 from falling and limit the movement of the filling pipe 200.
[0061] The filling tube 200 and the filling cap 300 must be made of plastic tubes of appropriate hardness and softness. During installation, the lower end of the filling tube 200 must first be connected to the threaded through-hole 123 on the second barrel 120 and tightened into place. The upper end of the filling tube 200 must then be passed through the vertically arranged mounting hole 131. Finally, the filling cap 300 must be threadedly connected to the filling tube 200 and tightened into place. The output-end grease filling structure provided herein, wherein the threaded through-hole 123 provided on the side wall of the second barrel 120 and the mounting through-hole 131 provided on the mounting flange 130, is simpler to manufacture, thereby reducing processing costs, lowering the scrap rate, and lowering production costs.
[0062] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.
[0063] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0064] The above is a detailed introduction to the embodiments provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. It should be noted that, for those skilled in the art, without departing from the principles of the present invention, various improvements and modifications may be made to the present invention, and such improvements and modifications also fall within the scope of protection of the present invention.
Claims
1. A grease filling structure at the output end of a yaw gearbox, characterized in that: include: The lower housing (100) comprises a first cylinder (110) and a second cylinder (120) in a stepped hole structure, and a mounting flange (130) arranged on the circumference of the first cylinder (110); an output end gear shaft (140) is passed through the interior of the lower housing (100); a first bearing (111) is arranged between the output end gear shaft (140) and the first cylinder (110); a second bearing (121) is arranged between the output end gear shaft (140) and the second cylinder (120); an oil seal (112) for sealing the first bearing (111) is arranged in the first cylinder (110); a grease storage space (122) is reserved in the second cylinder (120); the grease storage space (122) is located between the first cylinder (110) and the second bearing (121); The filling pipe (200) is a tubular structure, one end of which is installed through the mounting flange (130) and the other end of which is connected to the grease storage space (122).
2. The grease filling structure at the output end of the yaw gearbox according to claim 1, characterized in that: A threaded through hole (123) communicating with the fat storage space (122) is provided through the side wall of the second tube (120), and the threaded through hole (123) is in contact with the end surface of the first tube (110).
3. The grease filling structure at the output end of the yaw gearbox according to claim 2, characterized in that: Both ends of the filling pipe (200) are provided with external threads, and the ends of the filling pipe (200) can be threadedly connected to the threaded through hole (123).
4. The grease filling structure at the output end of the yaw gearbox according to claim 3, characterized in that: A filling cap (300) is installed on the end of the filling pipe (200) away from the threaded through hole (123), and an internal thread that matches the external thread is provided inside the filling cap (300).
5. The grease filling structure at the output end of the yaw gearbox according to claim 4, characterized in that: The bottom of the filling cap (300) is provided with a blind hole (310) having a diameter smaller than the outer diameter of the filling pipe (200).
6. The grease filling structure at the output end of the yaw gearbox according to claim 4, characterized in that: The mounting flange (130) is provided with a mounting hole (131) extending axially through the second cylinder (120), and the filling pipe (200) is passed through the mounting hole (131).
7. The grease filling structure at the output end of the yaw gearbox according to claim 6, characterized in that: There is a clearance fit between the mounting through hole (131) and the outer circumference of the filling pipe (200).
8. The grease filling structure at the output end of the yaw gearbox according to claim 7, characterized in that: The outer diameter of the filling cap (300) is greater than the diameter of the mounting through hole (131) to limit the movement of the filling pipe (200).
9. The grease filling structure at the output end of the yaw gearbox according to claim 2, characterized in that: A countersunk hole (124) is provided at the end of the threaded through hole (123) facing away from the output end gear shaft (140), and the countersunk hole (124) is used for applying sealant.
10. The grease filling structure at the output end of the yaw gearbox according to claim 4, characterized in that: The filling pipe (200) and the filling cap (300) are both made of plastic, and both are formed by injection molding.