A speed reducer that is easy to fill with oil.

Abstract

This utility model discloses a speed reducer that is easy to lubricate, including a speed reducer housing and a transmission assembly. The speed reducer housing has a chamber for accommodating the transmission assembly, which is detachably installed within the chamber. A socket is fixedly installed on the top of the speed reducer housing, and an oil filling groove extending vertically and communicating with the chamber is formed within the socket. The oil filling groove is used to inject lubricating oil into the chamber. A cover for sealing the oil filling groove is fitted and inserted into the socket. A plug-in fixing mechanism is provided between the socket and the cover. This utility model belongs to the field of speed reducer technology, specifically referring to a speed reducer that is easy to lubricate.

Description

Technical Field

[0001] This utility model belongs to the field of speed reducer technology, specifically referring to a speed reducer that is easy to fill with oil. Background Technology

[0002] As a power transmission mechanism, speed reducers are widely used in many fields such as machinery manufacturing, automobiles, metallurgy, and chemicals. Their core function is to convert the high-speed rotational motion of power sources such as motors into low-speed, high-torque rotational output to meet the operating requirements of various mechanical equipment. During use, to ensure the normal operation of internal transmission components such as gears and bearings, reduce friction and wear, and extend service life, lubricating oil needs to be added to the speed reducer regularly.

[0003] Currently, the oil filling structure used in most speed reducers still has significant shortcomings. Traditional methods typically involve setting threaded holes in the housing and sealing them with simple plugs. This structure has several prominent drawbacks in practical applications: First, after prolonged operation, the oil filling threaded holes are prone to corrosion in humid environments, making the plugs difficult to remove and severely affecting oil filling efficiency and lubrication quality; second, threaded connections usually require specialized tools for disassembly and assembly, making the process cumbersome, time-consuming, and labor-intensive. Utility Model Content

[0004] To address the problems in the traditional gear reducer oil filling structure mentioned above, such as the oil filling screw hole being prone to corrosion leading to difficulty in disassembling the screw plug, and the need for professional tools for disassembly and assembly of threaded connections being cumbersome, this utility model provides a gear reducer that is easy to fill with oil.

[0005] To achieve the above functions, the technical solution adopted by this utility model is as follows: a speed reducer that is easy to inject oil, including a speed reducer housing and a transmission assembly, wherein the speed reducer housing is provided with a chamber for accommodating the transmission assembly, and the transmission assembly is detachably installed in the chamber;

[0006] A socket is fixedly installed on the top of the reducer housing. An oil filling groove is opened in the socket, which extends vertically and communicates with the chamber. The oil filling groove is used to inject lubricating oil into the chamber.

[0007] The socket is fitted with a cover for sealing the oil filling tank;

[0008] A plug-in fixing mechanism is provided between the socket and the cover.

[0009] Furthermore, the insertion and fixing mechanism includes a through groove symmetrically opened on both sides of the oil filling groove and extending in the horizontal direction, a top groove connected to the outer end of the through groove and extending in the vertical direction, an insertion rod slidably disposed in the through groove in the horizontal direction, a sleeve block fixedly sleeved on the insertion rod, a spring sleeved on the outside of the insertion rod and located between the inner end of the through groove and the sleeve block, a connecting rod fixedly connected to the outer end of the insertion rod and extending in the horizontal direction, and a locking block fixedly connected to the top of the connecting rod and extending in the vertical direction.

[0010] One end of the spring is fixedly connected to the inner end of the through groove, and the other end is fixedly connected to the sleeve block. The spring is used to provide horizontal reset force for the insertion rod.

[0011] Furthermore, the plug-in fixing mechanism also includes a slot opened at the top of the socket and communicating with the top groove, a plug block fixedly connected to the bottom of the cover body and adapted to be inserted into the slot, and a limiting groove opened on the side of the socket and communicating with the slot.

[0012] Furthermore, the connecting rod is provided to slide through the slot and the limiting slot in the horizontal direction;

[0013] The outer end of the connecting rod is fixedly connected to a button that moves through the limiting groove.

[0014] Furthermore, the top of the card block is in contact with the inner wall of the top groove;

[0015] The card block has a first inclined surface on the side near the insertion block.

[0016] Furthermore, a rectangular groove is provided in the middle of the insert block, and the locking block is engaged in the rectangular groove;

[0017] The insert has a second inclined surface at a position corresponding to the first inclined surface.

[0018] Furthermore, the inner end of the through groove is provided with a bottom groove extending in the horizontal direction, and the inner end of the insertion rod is movably inserted into the bottom groove in the horizontal direction.

[0019] Furthermore, a sealing groove is provided on the top of the socket, and a first sealing ring is fixedly installed in the sealing groove.

[0020] Furthermore, a second sealing ring is fixedly installed at the bottom of the cover corresponding to the first sealing ring, and the second sealing ring is adapted to fit the first sealing ring.

[0021] A circular rubber plug is fixedly connected to the center of the inside of the cover, corresponding to the position of the oil filling groove, and the circular rubber plug is adapted to be inserted into the oil filling groove.

[0022] Furthermore, the bottom of the reducer housing is symmetrically and fixedly connected to a base, and the base is evenly provided with a plurality of mounting holes extending in the vertical direction, and bolts can be inserted into the mounting holes;

[0023] An oil drain pipe connected to the chamber is fixedly connected to the bottom center of the reducer housing, and an opening and closing valve is installed on the oil drain pipe.

[0024] Compared with the prior art, the present invention achieves the following beneficial effects by adopting the above structure:

[0025] This utility model, through the combination of a plug-in fixing mechanism and the first and second inclined surfaces, effectively solves the problems mentioned in the background art, such as the easy corrosion of the oil filling screw hole leading to difficulty in disassembling the screw plug, and the cumbersome operation of threaded connections requiring professional tools for disassembly and assembly. Specifically:

[0026] 1. Completely avoids disassembly difficulties caused by rust at the oil filling port: This utility model adopts a non-threaded plug-in fixing structure. The cover and the socket are positioned and fixed by the cooperation of the plug and the slot, which completely avoids the problem of traditional threaded oil filling holes rusting and getting stuck due to long-term exposure to a humid environment, ensuring that the oil filling cap can be easily opened and closed in any environment.

[0027] 2. It enables tool-free quick assembly and disassembly, making operation simple and labor-saving: pressing the button drives the plug-in fixing mechanism to release the locking state, allowing the cover to be removed directly for oiling; during installation, simply inserting the cover achieves automatic locking. The entire process requires no special tools, significantly improving the convenience and efficiency of maintenance operations and solving the problem of time-consuming and laborious assembly and disassembly of traditional threaded connections. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a speed reducer that is easy to inject oil, as proposed in this utility model.

[0029] Figure 2 This is a cross-sectional view of a speed reducer that is easy to fill with oil, as proposed in this utility model.

[0030] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle;

[0031] Figure 4 This is an exploded view of the cover and socket proposed in this utility model;

[0032] Figure 5 This is a cross-sectional view of the cover and socket proposed in this utility model;

[0033] Figure 6 This is a schematic diagram of the overall structure of the cover body proposed in this utility model.

[0034] Among them, 1. Gearbox housing, 12. Transmission assembly, 13. Chamber, 14. Base, 15. Oil drain pipe, 2. Socket, 21. Oil filling groove, 22. Sealing groove, 23. First sealing ring, 24. Limiting groove, 25. Button, 26. Bottom groove, 3. Cover, 31. Second sealing ring, 32. Circular rubber plug, 4. Insertion and fixing mechanism, 41. Through groove, 42. Top groove, 43. Insert rod, 44. Sleeve block, 45. Spring, 46. Connecting rod, 47. Locking block, 48. Slot, 49. Insert block. Detailed Implementation

[0035] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. The present invention will be further described in detail below with reference to the accompanying drawings.

[0038] like Figure 1-6As shown, this utility model provides a speed reducer that is easy to fill with oil, including a speed reducer housing 1 and a transmission assembly 12. The speed reducer housing 1 is provided with a chamber 13 for accommodating the transmission assembly 12, and the transmission assembly 12 is detachably installed in the chamber 13. A socket 2 is fixedly provided on the top of the speed reducer housing 1. An oil filling groove 21 extending vertically and communicating with the chamber 13 is opened in the socket 2. The oil filling groove 21 is used to inject lubricating oil into the chamber 13. A cover 3 for sealing the oil filling groove 21 is adapted to be inserted into the socket 2. When filling with oil, there is no need to disassemble other parts of the housing. Only the cover 3 needs to be opened to directly inject lubricating oil into the chamber 13 through the vertical oil filling groove 21, which flows precisely to the transmission assembly 12. A plug-in fixing mechanism 4 is provided between the socket 2 and the cover 3 to detachably fix the cover 3 to the socket 2 to achieve sealing of the oil filling groove 21 and prevent lubricating oil leakage or external impurities from entering the chamber 13.

[0039] like Figure 1-6 As shown, the insertion and fixing mechanism 4 includes a through groove 41 symmetrically opened on both sides of the oil filling groove 21 and extending horizontally, a top groove 42 connected to the outer end of the through groove 41 and extending vertically, an insertion rod 43 slidably disposed in the through groove 41, a sleeve block 44 fixedly sleeved on the insertion rod 43, a spring 45 sleeved on the outside of the insertion rod 43 and located between the inner end of the through groove 41 and the sleeve block 44, a connecting rod 46 fixedly connected to the outer end of the insertion rod 43 and extending horizontally, and a locking block 47 fixedly connected to the top of the connecting rod 46 and extending vertically; one end of the spring 45 is fixedly connected to the inner end of the through groove 41, and the other end is fixedly connected to the sleeve block 44. The spring 45 is used to secure the insertion rod 43. A horizontal reset spring is provided; the plug-in fixing mechanism 4 also includes a slot 48 opened at the top of the socket 2 and communicating with the top groove 42, a plug block 49 fixedly connected to the bottom of the cover 3 and adapted to be inserted into the slot 48, and a limiting groove 24 opened at the side of the socket 2 and communicating with the slot 48; the connecting rod 46 is slidably provided through the slot 48 and the limiting groove 24 in the horizontal direction; the outer end of the connecting rod 46 is fixedly connected to a button 25 that moves through the limiting groove 24, the button 25 is used for the operator to press, so as to drive the connecting rod 46 to drive the plug rod 43 to slide along the through groove 41; the limiting groove 24 is used to limit the sliding stroke of the connecting rod 46 and the button 25 to prevent the connecting rod 46 and the button 25 from deviating;

[0040] The top of the locking block 47 fits against the inner wall of the top groove 42. The top groove 42 is used to limit the vertical displacement of the locking block 47 and provide movement space. A first inclined surface is provided on the side of the locking block 47 near the insertion block 49. The first inclined surface is used to guide the insertion block 49 to drive the locking block 47 to move horizontally when it is inserted into the slot 48. A rectangular groove is opened in the middle of the insertion block 49, and the locking block 47 is locked in the rectangular groove. A second inclined surface is opened on the insertion block 49 corresponding to the position of the first inclined surface. The first inclined surface and the second inclined surface are adapted to each other. Through the cooperation of the two inclined surfaces, the insertion block 49 can automatically push the locking block 47 to compress the spring 45 when it is inserted into the slot 48. The initial fixing of the cover 3 can be completed without manually operating the button 25. A bottom groove 26 extending horizontally is opened at the inner end of the through groove 41. The inner end of the insertion rod 43 is movably inserted into the bottom groove 26 in the horizontal direction. The bottom groove 26 is used to provide space for the sliding of the insertion rod 43.

[0041] When the cover 3 is closed: the operator aligns the insert 49 below the cover 3 with the slot 48 at the top of the socket 2 and inserts it vertically downwards; during the downward movement of the insert 49, its outer second inclined surface comes into contact with and presses against the first inclined surface of the locking block 47; through the force transmission of the inclined surface, the locking block 47 is pushed and moves synchronously to the outside of the through slot 41 along with the linkage rod 46 and the insert rod 43. During this process, the insert rod 43 drives the sleeve block 44 to compress the spring 45, so that the spring 45 completes the storage of elastic potential energy; when the insert 49 is inserted to the preset depth, the locking part of the locking block 47 is precisely embedded in the rectangular slot of the insert 49 under the push of the spring 45's return elastic force, realizing the rigid locking of the insert 49 and the locking block 47, thereby quickly fixing the cover 3 onto the socket 2. When the cover 3 is opened: the operator presses button 25 inward with their finger; button 25 pushes the connecting rod 46 and the insert rod 43 to move inward again, and the spring 45 is compressed again, so that the locking block 47 completely disengages from the rectangular groove of the insert block 49; as the locking block 47 disengages, the operator can pull the cover 3 upward to complete the unlocking; after releasing button 25, the spring 45 pushes the entire mechanism to reset again, ready for the next locking cycle.

[0042] like Figure 2-6As shown, a sealing groove 22 is provided on the top of the socket 2. A first sealing ring 23 is fixedly embedded in the sealing groove 22 by interference fit. The first sealing ring 23 is made of elastic rubber and is used to improve the sealing performance between the socket 2 and the cover 3. A second sealing ring 31 is fixedly installed at the bottom of the cover 3 corresponding to the first sealing ring 23. The second sealing ring 31 fits and conforms to the first sealing ring 23. The cover 3 also has an annular groove. The second sealing ring 31 is fixed in the groove by interference fit. When the cover 3 is closed, the second sealing ring 31 and the first sealing ring 23 are compressed and deformed under vertical pressure. The compression amount is 20%-30% of the sealing thickness, forming a surface contact seal, thus forming a double sealing structure. A circular rubber plug 32 is fixedly connected in the center of the inside of the cover 3 corresponding to the position of the oil filling groove 21. The circular rubber plug 32 is fitted into the oil filling groove 21 to achieve triple sealing of the oil filling groove 21.

[0043] like Figure 1 and 2 As shown, the bottom of the reducer housing 1 is symmetrically and fixedly connected with a base 14 for supporting the reducer housing 1. The base 14 has a plurality of mounting holes extending vertically evenly. Bolts can be inserted into the mounting holes to detachably install the reducer housing 1 in the working area. The bottom center of the reducer housing 1 is fixedly connected with an oil drain pipe 15 that communicates with the chamber 13. An opening and closing valve for controlling the opening and closing of the oil drain pipe 15 is installed on the oil drain pipe 15. The discharge of waste lubricating oil in the chamber 13 can be controlled by opening and closing the valve.

[0044] In practical use, when lubrication is required for routine maintenance, the operator presses button 25 with both hands. Through button 25, the connecting rod 46 slides inward along the limiting groove 24. The connecting rod 46 simultaneously drives the insert rod 43 to move in the through groove 41 and compress the spring 45. Then, the locking block 47 completely disengages from the rectangular groove of the insert block 49 in the cover 3. At this time, the cover 3 can be pulled upward to open the oil filling groove 21. Then, lubricating oil is slowly injected along the vertically extending oil filling groove 21. The lubricating oil can flow to the transmission component 12 in the chamber 13.

[0045] After the oil filling is completed, align the insert 49 at the bottom of the cover 3 with the slot 48 at the top of the socket 2 and press it vertically downward. During the pressing process, the second inclined surface of the insert 49 contacts the first inclined surface of the locking block 47 and pushes the locking block 47, the connecting rod 46 and the insert rod 43 to move outward against the elastic force of the spring 45. When the insert 49 is fully inserted into the slot 48, the spring 45 releases its elastic potential energy to push the insert rod 43 to reset, and drives the locking block 47 to accurately lock into the rectangular groove of the insert 49, thereby achieving automatic fixing of the cover 3. At the same time, the second sealing ring 31 at the bottom of the cover 3 fits tightly with the first sealing ring 23 in the sealing groove 22 of the socket 2. The circular rubber plug 32 in the center of the cover 3 is adapted to be inserted into the oil filling groove 21 to form a triple seal to prevent lubricating oil leakage and impurities from entering.

[0046] When the waste lubricating oil needs to be replaced, simply open the valve on the drain pipe 15 at the bottom of the reducer housing 1 to completely drain the waste oil in the chamber 13. After the draining is complete and the valve is closed, new lubricating oil can be added according to the above-mentioned oil filling process. If the transmission component 12 needs to be repaired, the connection between the base 14 and the area to be worked can be removed by bolts first, the reducer can be moved as a whole, and then the transmission component 12 in the chamber 13 can be disassembled. After the repair is completed, it can be reassembled and put back into use.

[0047] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A speed reducer that is easy to fill with oil, comprising a speed reducer housing (1) and a transmission assembly (12), wherein the speed reducer housing (1) is provided with a chamber (13) for accommodating the transmission assembly (12), and the transmission assembly (12) is detachably installed in the chamber (13), characterized in that: A socket (2) is fixedly installed on the top of the reducer housing (1). An oil filling groove (21) extending vertically and communicating with the chamber (13) is opened in the socket (2). The oil filling groove (21) is used to inject lubricating oil into the chamber (13). The socket (2) is fitted with a cover (3) for sealing the oil filling tank (21); A plug-in fixing mechanism (4) is provided between the socket (2) and the cover (3).

2. The reducer that is easy to inject oil according to claim 1, characterized in that: The insertion and fixing mechanism (4) includes a through groove (41) symmetrically opened on both sides of the oil filling groove (21) and extending in the horizontal direction, a top groove (42) connected to the outer end of the through groove (41) and extending in the vertical direction, an insertion rod (43) slidably disposed in the through groove (41) in the horizontal direction, a sleeve block (44) fixedly sleeved on the insertion rod (43), a spring (45) sleeved outside the insertion rod (43) and located between the inner end of the through groove (41) and the sleeve block (44), a connecting rod (46) fixedly connected to the outer end of the insertion rod (43) and extending in the horizontal direction, and a locking block (47) fixedly connected to the top of the connecting rod (46) and extending in the vertical direction. One end of the spring (45) is fixedly connected to the inner end of the through groove (41), and the other end is fixedly connected to the sleeve block (44). The spring (45) is used to provide horizontal reset force for the insertion rod (43).

3. A speed reducer that is easy to inject oil according to claim 2, characterized in that: The plug-in fixing mechanism (4) further includes a slot (48) opened on the top of the socket (2) and communicating with the top groove (42), a plug block (49) fixedly connected to the bottom of the cover (3) and adapted to be inserted into the slot (48), and a limiting groove (24) opened on the side of the socket (2) and communicating with the slot (48).

4. The reducer that is easy to inject oil according to claim 3, characterized in that: The connecting rod (46) is provided to slide through the slot (48) and the limiting slot (24) in the horizontal direction; The outer end of the connecting rod (46) is fixedly connected to a button (25) that moves through the limiting groove (24).

5. A speed reducer that is easy to inject oil according to claim 3, characterized in that: The top of the card block (47) is in contact with the inner wall of the top groove (42); The card block (47) has a first inclined surface on the side near the insert block (49).

6. A reducer that is easy to inject oil according to claim 5, characterized in that: The insert (49) has a rectangular groove in the middle, and the locking block (47) is engaged in the rectangular groove; The insert (49) has a second inclined surface at a position corresponding to the first inclined surface.

7. A speed reducer that is easy to inject oil according to claim 2, characterized in that: The inner end of the through groove (41) is provided with a bottom groove (26) extending in the horizontal direction, and the inner end of the insertion rod (43) is movably inserted into the bottom groove (26) in the horizontal direction.

8. A speed reducer that is easy to inject oil according to claim 1, characterized in that: The socket (2) has a sealing groove (22) on its top, and a first sealing ring (23) is fixedly installed in the sealing groove (22).

9. A speed reducer that is easy to inject oil according to claim 1, characterized in that: The bottom of the cover (3) is fixedly installed with a second sealing ring (31) corresponding to the first sealing ring (23), and the second sealing ring (31) is adapted to fit the first sealing ring (23); A circular rubber plug (32) is fixedly connected to the center of the cover (3) corresponding to the position of the oil filling groove (21), and the circular rubber plug (32) is adapted to be inserted into the oil filling groove (21).

10. A speed reducer that is easy to inject oil according to claim 1, characterized in that: The bottom of the reducer housing (1) is symmetrically fixedly connected to a base (14). The base (14) is evenly provided with a plurality of mounting holes extending in the vertical direction, and bolts can be inserted into the mounting holes. The bottom center of the reducer housing (1) is fixedly connected to an oil drain pipe (15) that communicates with the chamber (13), and an opening and closing valve is installed on the oil drain pipe (15).

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