Oil chamber exhaust mechanism

Abstract

The utility model relates to industrial robot lubricating technical field, concretely relates to an oil cavity exhaust mechanism. Including base, speed reducer and waist seat, speed reducer sets up in base, and forms speed reducer lubricating oil chamber between with base, base is equipped with oil injection channel, and the upper end of oil injection channel is connected with speed reducer lubricating oil chamber, and the lower end is connected with pipe joint, the center of speed reducer output shaft is equipped with main exhaust passage and three auxiliary exhaust passages around main exhaust passage, waist seat is equipped with exhaust path and air chamber, and one end of exhaust path is connected with an auxiliary exhaust passage, and the other end is connected with sealed plug, and the lower end of air chamber is connected with the main exhaust passage of output shaft, and the upper end is equipped with waterproof breather valve, the utility model sets up two exhaust related structures, effectively solved the problem that the oil quantity of high viscosity lubricating grease is not reached specified volume and flows from the exhaust passage when adding, does not need to rotate speed reducer and observes the oil outlet condition of exhaust passage, and the oil work efficiency is improved obviously.

Description

Technical Field

[0001] This utility model relates to the field of industrial robot lubrication technology, specifically to an oil chamber exhaust mechanism. Background Technology

[0002] In the lubrication system of an industrial robot's single axis, the reducer is a core component, and its lubrication effect directly affects the robot's operating accuracy and service life. In existing technology, the reducer's exhaust channel is led out from the auxiliary bearing hole. Because the reducer's rotating shaft is always orthogonal to the ground in this application scenario, and the upper ball bearing always rotates in the same position and needs to be submerged in lubricating oil, it is difficult to accurately control the amount of lubricating oil added. If too much lubricating oil is added, oil leakage is likely to occur.

[0003] Meanwhile, existing technology only has one exhaust channel, while the internal shape of the reducer is complex. During the process of adding high-viscosity grease, the grease often leaks out of the exhaust channel before the specified volume is reached. The current industry solution is to rotate the reducer while observing whether grease is flowing out of the exhaust channel to determine the amount added. This method is extremely inefficient and seriously affects production and maintenance schedules. Therefore, a new technical solution is urgently needed to solve the above problems. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide an oil chamber venting mechanism to solve the problems in the prior art where high-viscosity grease flows out of the venting channel before the oil volume reaches the specified volume, and the need to observe the refueling while rotating the reducer, resulting in low efficiency. At the same time, it is adaptable to different dust conditions and controls the pressure inside the lubrication chamber.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This utility model provides an oil chamber exhaust mechanism, including a base, a reducer, and a waist seat. The reducer is disposed inside the base, and a reducer lubrication oil chamber is formed between the reducer and the base. The base has an oil injection channel, the upper end of which is connected to the reducer lubrication oil chamber, and the lower end of which is connected to a pipe joint. The output shaft of the reducer is connected to the waist seat. The center of the output shaft has a main exhaust channel and three auxiliary exhaust channels surrounding the main exhaust channel. The main exhaust channel and the three auxiliary exhaust channels are all connected to the reducer lubrication oil chamber. The waist seat has an exhaust path and an air chamber. One end of the exhaust path is connected to an auxiliary exhaust channel, and the other end of the exhaust path extends to the outside of the side of the waist seat and is connected to a sealing plug. The lower end of the air chamber is connected to the main exhaust channel of the output shaft, and a waterproof vent valve or a sealing plug is installed at the upper end of the air chamber.

[0006] The three input gear shafts of the reducer mesh with the output gear of the motor through gear pairs, and the output gear of the motor forms a rotary dynamic seal with the base through an oil seal; the output shaft of the reducer is rotatably connected to the housing of the reducer through an upper ball bearing, and the output shaft and the housing are sealed by the rotary dynamic seal of the reducer.

[0007] The air chamber can accommodate the volume of the lubricating oil in the reducer's lubricating oil chamber due to heat expansion, ensuring that the pressure rise in the reducer's lubricating oil chamber does not exceed the pressure resistance values ​​of the reducer's rotating dynamic seal and oil seal.

[0008] The volume ratio of the air chamber to the lubricating oil in the reducer lubrication chamber is 1:9.

[0009] The waterproof and breathable valve is a copper-plated nickel waterproof and breathable valve for low-dust applications; in high-dust applications, the waterproof and breathable valve is replaced with a sealing plug.

[0010] The pipe fitting is a round thread straight pipe fitting, which is used to connect an oil pipe. The oil pipe is connected to the outside of the base and is used to inject oil into the lubrication chamber of the reducer from the outside of the base.

[0011] The advantages and beneficial effects of this utility model are: 1. Improved refueling efficiency: This utility model is equipped with two exhaust-related structures (exhaust path, air cavity and corresponding exhaust channel), which effectively solves the problem that when high viscosity grease is added, the oil volume does not reach the specified volume and flows out from the exhaust channel due to the complex shape of the reducer's inner cavity. There is no need to rotate the reducer and observe the oil output from the exhaust channel, which significantly improves the efficiency of refueling.

[0012] 2. Adaptable to multiple working conditions: The interchangeable design of the copper-plated nickel waterproof and breathable valve and the internal hexagonal O-ring sealing plug makes this mechanism suitable for both low-dust scenarios and high-dust application conditions, thus broadening its applicability.

[0013] 3. Stabilize internal pressure: The air chamber is designed to accommodate the volume of lubricating oil due to thermal expansion, keeping the pressure inside the lubrication chamber below 0.25MPa. This prevents damage to seals or lubricating oil leakage due to excessive pressure, ensuring the stable operation of the mechanism.

[0014] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0015] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of an oil cavity exhaust mechanism according to the present invention; Figure 2 for Figure 1 A schematic diagram of the AA cross-section; Figure 3 for Figure 1 Side view; Figure 4 for Figure 3 BB cross-sectional diagram; Figure 5 This is one of the isometric views of the reducer in this utility model; Figure 6 This is the second isometric view of the reducer in this utility model.

[0017] In the diagram: 1. Base; 2. Reducer; 3. Waist seat; 4. Motor output gear; 5. Oil seal; 6. Pipe joint; 7. Sealing plug; 8. Waterproof and breathable valve; 101. Oil injection channel; 201. Housing; 202. Output shaft; 203. Input gear shaft; 204. Upper ball bearing; 205. Lower ball bearing; 206. Reducer rotating dynamic seal ring; 207. Auxiliary exhaust channel; 208. Main exhaust channel; 209. Upper end face; 210. Reducer lubricating oil chamber; 301. Exhaust path; 302. Air chamber. Detailed Implementation

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 utility model according to the specific circumstances.

[0019] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] See Figures 1 to 6As shown, this utility model provides an oil chamber venting mechanism, including a base 1, a reducer 2, and a support 3. The lower end of the base 1 is installed on the ground, the reducer 2 is disposed inside the base 1, and a reducer lubrication oil chamber 210 is formed between the reducer 2 and the base 1. The base 1 is provided with an oil injection channel 101, the upper end of which is connected to the reducer lubrication oil chamber 210, and the lower end of which is connected to a pipe joint 6. The housing 201 of the reducer 2 is connected to the base 1, and the output shaft 202 of the reducer 2 is connected to the support 3. The upper end face 209 of the output shaft 202 of the reducer 2 faces upward. The output shaft 202 has a main exhaust channel 208 at its center and three auxiliary exhaust channels 207 surrounding the main exhaust channel 208. The main exhaust channel 208 and the three auxiliary exhaust channels 207 are all connected to the lubrication oil chamber 210 of the reducer. The waist seat 3 has an exhaust path 301 and an air chamber 302. One end of the exhaust path 301 is connected to an auxiliary exhaust channel 207, and the other end of the exhaust path 301 extends to the outside of the side of the waist seat 3 and is connected to the sealing plug 7. The lower end of the air chamber 302 is connected to the main exhaust channel 208 of the output shaft 202, and the upper end of the air chamber 302 is equipped with a waterproof and breathable valve 8.

[0021] See Figure 1 and Figure 6 As shown in the embodiment of this utility model, the reducer 2 is an RV type reducer. The three input gear shafts 203 of the reducer 2 mesh with the motor output gear 4 through gear pairs. The motor output gear 4 forms a rotary dynamic seal with the base 1 through an oil seal 5. The output shaft 202 of the reducer 2 is rotatably connected to the housing 201 of the reducer 2 through an upper ball bearing 204, and the output shaft 202 and the housing 201 are sealed by a reducer rotary dynamic seal 206. The shaft system inside the housing 201 is rotatably connected to the housing 201 through a lower ball bearing 205.

[0022] In the embodiments of this utility model, the air cavity 302 can accommodate the volume of the lubricating oil in the reducer lubricating oil cavity 210 due to heat expansion, so that the pressure rise in the reducer lubricating oil cavity 210 does not exceed the pressure resistance value of 0.25MPa of the reducer rotary dynamic seal 206 and oil seal 5.

[0023] Furthermore, the volume ratio of the lubricating oil in the air chamber 302 to that in the reducer lubricating oil chamber 210 is 1:9.

[0024] Specifically, the waterproof and breathable valve 8 is a copper-plated nickel waterproof and breathable valve for low-dust applications; in high-dust applications, the waterproof and breathable valve 8 is replaced with a sealing plug. The pipe connector 6 is a round thread straight pipe connector, which is used to connect the oil pipe to the outside of the base 1. The oil pipe is used to inject oil from the outside of the base 1 into the reducer lubrication chamber 210.

[0025] Preferably, the sealing plug 7 is an internal hexagonal O-type sealing plug.

[0026] This utility model provides an oil cavity exhaust mechanism, the working principle of which is as follows: Oil filling operation: High viscosity grease is injected into the oil filling channel 101 through the oil pipe outside the base 1. The grease enters the lubricating oil chamber 210 of the reducer through the oil filling channel 101. During the filling process, the air in the lubricating oil chamber 210 of the reducer enters the air chamber 302 through the main exhaust channel 208, and is then discharged through the waterproof vent valve 8 or the corresponding exhaust structure. The filling can be completed without rotating the reducer until the specified volume is reached.

[0027] Operating condition adaptation: When the application scenario is a low dust environment, the waterproof and breathable valve 8 is used to achieve the functions of exhaust and waterproof ventilation; when the application scenario is a high dust environment, the waterproof and breathable valve is replaced with an internal hexagonal O-type sealing plug 7 to prevent dust from entering the internal structure and affecting operation.

[0028] Pressure control: During operation, the lubricating oil heats up and expands. Its expansion volume is contained by the compressible space of the air chamber 302, so that the pressure in the lubricating oil chamber 210 of the reducer is always controlled within 0.25MPa, ensuring the sealing performance of the reducer rotary dynamic seal 206 and oil seal 5, and preventing lubricating oil leakage.

[0029] This invention effectively solves the problem of high-viscosity grease flowing out of the vent hole before the specified volume is reached when adding grease due to the complex shape of the reducer's internal cavity. It eliminates the need to rotate the reducer and observe the grease discharge from the vent hole, thus significantly improving the efficiency of refueling.

[0030] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An oil-filled exhaust mechanism, characterized in that, The device includes a base (1), a reducer (2), and a waist support (3). The reducer (2) is located inside the base (1), and a reducer lubrication oil chamber (210) is formed between the reducer (2) and the base (1). The base (1) is provided with an oil injection channel (101), the upper end of which is connected to the reducer lubrication oil chamber (210), and the lower end of which is connected to a pipe joint (6). The output shaft (202) of the reducer (2) is connected to the waist support (3). The center of the output shaft (202) is provided with a main exhaust channel (208) and three auxiliary exhaust channels surrounding the main exhaust channel (208). The channel (207), the main exhaust channel (208) and the three auxiliary exhaust channels (207) are all connected to the lubricating oil chamber (210) of the reducer; the waist seat (3) is provided with an exhaust path (301) and an air chamber (302). One end of the exhaust path (301) is connected to an auxiliary exhaust channel (207), and the other end of the exhaust path (301) extends to the outside of the side of the waist seat (3) and is connected to the sealing plug (7); the lower end of the air chamber (302) is connected to the main exhaust channel (208) of the output shaft (202), and the upper end of the air chamber (302) is equipped with a waterproof vent valve (8) or a sealing plug (7).

2. The oil chamber exhaust mechanism according to claim 1, characterized in that, The three input gear shafts (203) of the reducer (2) mesh with the output gear (4) of the motor through gear pairs. The output gear (4) of the motor forms a rotary dynamic seal with the base (1) through an oil seal (5). The output shaft (202) of the reducer (2) is rotatably connected to the housing (201) of the reducer (2) through an upper ball bearing (204), and the output shaft (202) and the housing (201) are sealed by a reducer rotary dynamic seal (206).

3. The oil chamber exhaust mechanism according to claim 2, characterized in that, The air chamber (302) can accommodate the volume of the lubricating oil in the reducer lubricating oil chamber (210) due to heat expansion, so that the pressure rise in the reducer lubricating oil chamber (210) does not exceed the pressure resistance values ​​of the reducer rotary dynamic seal (206) and oil seal (5).

4. The oil chamber exhaust mechanism according to claim 3, characterized in that, The volume ratio of the lubricating oil in the air chamber (302) to that in the gearbox lubricating oil chamber (210) is 1:

9.

5. The oil chamber exhaust mechanism according to claim 1, characterized in that, The waterproof and breathable valve (8) is a copper-plated nickel waterproof and breathable valve for low dust scenarios; in high dust application scenarios, the waterproof and breathable valve (8) is replaced with a sealing plug (7).

6. The oil chamber exhaust mechanism according to claim 1, characterized in that, The pipe connector (6) is a round thread straight pipe connector. The pipe connector (6) is used to connect the oil pipe. The oil pipe is connected to the outside of the base (1). The oil pipe is used to inject oil from the outside of the base (1) into the lubricating oil chamber (210) of the reducer.

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