External lubricating oil cooling device for speed reducer

Abstract

The utility model discloses an external lubricating oil cooling device for a speed reducer, which belongs to the technical field of speed reducers and comprises a speed reducer body and a cooling box arranged on one side of the speed reducer body, a buffer plate is arranged in the cooling box and divides the cooling box into an upper cavity and a lower cavity, and an oil outlet pipe is connected with an output end oil way of the speed reducer body. The oil outlet pipe penetrates through the side face of the cooling box and is located in an upper cavity in the cooling box, a plurality of cooling pipes used for introducing cooling water to cool lubricating oil are evenly arranged on the buffer plate, and the cooling pipes located at the two ends of the buffer plate divide the buffer plate into a feeding area, a cooling area and a communicating area in sequence. The end, located in the cooling box, of the oil outlet pipe is located at the upper end of the feeding area, a filtering opening communicated with the upper cavity and the lower cavity is formed in the communicating area, an oil inlet of the speed reducer is connected with an oil inlet pipe, and the other end of the oil inlet pipe penetrates through the side face of the cooling box to be located in the lower cavity. And the cooling and filtering effects on the lubricating oil of the speed reducer can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, and more specifically to an external lubricating oil cooling device for reducers. Background Art

[0002] The reducer is an independent component consisting of a gear drive, worm drive, or gear-worm drive enclosed in a rigid housing. It is often used as a reduction transmission device between the prime mover and the working machine. It plays the role of matching speed and transmitting torque between the prime mover and the working machine or actuator, and is widely used in modern machinery.

[0003] When using a high-power motor, it is necessary to use a matching large reducer. The large reducer needs to go through a multi-stage reduction transmission mechanism to complete the reduction. The reducer has many internal transmission parts, and this type of transmission reduction is rigid contact, which is prone to wear and generates a lot of heat energy. Wear and high temperature will affect the life of the reducer. When in use, it needs to be lubricated with lubricating oil to reduce rigid wear. At the same time, the lubricating oil can play a role in cooling. However, the traditional reducer oil circuit only circulates internally. When the lubricating oil heats up to a certain temperature, it will affect the cooling and lubrication effects of the reducer, thereby affecting the cooling and lubrication effects of the lubricating oil on the reducer. At the same time, rigid contact will cause metal debris, and failure to clean it in time will cause further damage to the equipment. A solution is proposed below to address the above problems. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide an external lubricating oil cooling device for a reducer, which can achieve the effect of cooling and filtering the lubricating oil of the reducer.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] A reducer external lubricating oil cooling device comprises a reducer body and a cooling box arranged on one side of the reducer body, a buffer plate is arranged inside the cooling box, the buffer plate divides the cooling box into an upper cavity and a lower cavity, the oil circuit at the output end of the reducer body is connected with an oil outlet pipe, the oil outlet pipe passes through the side of the cooling box and is located in the upper cavity inside the cooling box, a plurality of cooling pipes for passing cooling water to cool the lubricating oil are evenly arranged on the buffer plate, the cooling pipes located at both ends of the buffer plate divide the buffer plate into a loading area, a cooling area and a connecting area in sequence, one end of the oil outlet pipe located inside the cooling box is located at the upper end of the loading area, a filter port connecting the upper cavity and the lower cavity is opened on the connecting area, the oil inlet of the reducer is connected with an oil inlet pipe, the other end of the oil inlet pipe passes through the side of the cooling box and is located in the lower cavity, and an oil pump is installed on the oil inlet pipe.

[0007] Preferably, edges are respectively provided on the outside of several of the cooling pipes, and placement grooves are opened on the sides of the edges. The axial direction of the placement grooves is the same as the axial direction of the edges. The cooling pipes are located inside the placement grooves, and the cooling pipes and the placement grooves are adapted and fitted, and the edges are fixedly connected to the buffer plate.

[0008] Preferably, a bottom filter is horizontally arranged inside the lower cavity, the bottom filter corresponds to the filter port, and the three ends of the bottom filter are respectively fixedly connected to the three sides of the cooling box, the other end face of the filter is fixedly connected to the side filter, and the remaining three ends of the side filter are respectively fixedly connected to the side of the cooling box and the bottom surface of the buffer plate.

[0009] Preferably, water inlet pipes and water outlet pipes are provided on both sides of the cooling box, and the water inlet pipes and water outlet pipes are respectively located at both ends of the cooling pipes, and the two ends of several cooling pipes respectively pass through the corresponding sides of the cooling box and the water inlet pipes to be connected with the water outlet pipes.

[0010] Preferably, the edge block is a triangular prism.

[0011] Preferably, the bottom filter screen and the side filter screen form an acute angle.

[0012] Preferably, the water inlet pipe is in the shape of a tube with one end sealed.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] 1. This scheme is to guide the lubricating oil inside the reducer into the cooling box through the oil outlet pipe. In the process of the lubricating oil inside the oil outlet pipe falling on the buffer plate through the upper cavity, the contact area with the upper cavity is increased, thereby improving the cooling effect of the air in the upper cavity on the lubricating oil. When the lubricating oil falling on the buffer plate passes through multiple cooling pipes, the coolant inside the cooling pipes performs multi-stage cooling on the lubricating oil, thereby achieving a cooling effect. Multiple cooling pipes form obstacles on the buffer plate, thereby having a certain filtering effect on impurities in the lubricating oil. At the same time, when the lubricating oil on the buffer plate enters the lower cavity through the filter port, the contact area between the grease and the air in the lower cavity is increased, thereby improving the cooling effect of the air inside the lower cavity on the lubricating oil.

[0015] Second, the edge blocks can block larger debris and impurities in the lubricating oil passing through the cooling pipe, thereby cleaning the lubricating oil.

[0016] 3. The bottom filter and side filter can perform secondary filtration on the lubricating oil and remove smaller impurities in the lubricating oil.

[0017] 4. The sharp angle arrangement between the bottom filter and the side filter can effectively prevent impurities in the lubricating oil from being stuck in the mesh opening of the side filter by relying on their own gravity, thereby ensuring the fluidity of the lubricating oil through the side filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the isometric structure of the utility model;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of a cross-sectional structure of a cooling box of the utility model in a front view;

[0021] Figure 4 It is a schematic diagram of a cross-sectional structure of a cooling box of the utility model from a top view;

[0022] Figure 5 It is a schematic diagram of the enlarged structure of A of the utility model;

[0023] Figure 6 It is a schematic diagram of the enlarged structure of B of the utility model.

[0024] Description of the numbers in the figure:

[0025] 1. Reducer body; 2. Cooling box; 3. Buffer plate; 4. Upper cavity; 5. Lower cavity; 6. Oil outlet pipe; 7. Cooling pipe; 8. Feeding area; 9. Cooling area; 10. Connecting area; 11. Filter port; 12. Oil inlet pipe; 13. Oil pump; 14. Edge block; 15. Placement slot; 16. Bottom filter; 17. Side filter; 18. Water inlet pipe; 19. Water outlet pipe. DETAILED DESCRIPTION

[0026] Embodiment 1:

[0027] See also Figure 1-6 A reducer external lubricating oil cooling device comprises a reducer body 1 and a cooling box 2 arranged on one side of the reducer body 1, the cooling box 2 comprises an upper box body and a lower box body, the upper box body and the lower box body are arranged symmetrically, and a bayonet is opened at the opening of the upper box body and the lower box body, the bayonet is in a circular shape, and a buffer plate 3 is clamped between the bayonet of the upper box body and the lower box body, the buffer plate 3 is respectively combined with the upper box body and the lower box body to form an upper cavity 4 and a lower cavity 5, and the upper box body and the lower box body are fixedly connected by bolts and nuts, and a sealing gasket for increasing the sealing effect is clamped on the contact surface of the upper box body and the lower box body to ensure the internal sealing, prevent dust from entering and avoid leakage of lubricating oil. The cooling box 2 adopts a split design of the upper box body and the lower box body, and is fixed by bolts, which is convenient for maintenance and cleaning of the internal buffer plate 3.

[0028] The oil circuit at the output end of the reducer body 1 is connected to an oil outlet pipe 6, which passes through the side of the upper box body and has its end located in the upper cavity 4, and the oil outlet pipe 6 is arranged at the top of the upper cavity 4. The higher design of the oil outlet pipe 6 can increase the contact area between the lubricating oil and the air in the upper cavity 4. The oil circuit at the input end of the reducer body 1 is connected to an oil inlet pipe 12, which passes through the side of the lower box body and has its end located in the lower cavity 5, and the oil inlet pipe 12 is arranged at the bottom of the lower cavity 5. The lower setting of the oil inlet pipe 12 can ensure that the lubricating oil inside the lower cavity 5 enters the oil inlet pipe 12, and an oil pump 13 for extracting the lubricating oil from the lower cavity 5 is installed on the oil inlet pipe 12, and the oil pump 13 is installed on the side of the lower box body.

[0029] The upper box body is symmetrically provided with an inlet pipe 18 and an outlet pipe 19 on both sides. The inlet pipe 18 is a tube body sealed at one end. The seal at one end can ensure the pressure inside the inlet pipe 18 when the coolant is passed, thereby ensuring that the coolant can smoothly flow into the cooling pipe 7. The outlet pipe 19 is a tube body with openings at both ends. Both ends are open to facilitate the smooth outflow of the coolant. A plurality of cooling pipes 7 for cooling the lubricating oil by passing cooling water are evenly arranged on the buffer plate 3. The plurality of cooling pipes 7 are respectively perpendicular to the inlet pipe 18 and the outlet pipe 19. The two ends of the plurality of cooling pipes 7 respectively pass through the corresponding side surfaces of the upper box body and the inlet pipe 18 and the outlet pipe 19 is connected, the water inlet pipe 18 can provide coolant for all cooling tubes 7 at the same time, and the coolant can be collected uniformly through the water outlet pipe 19. The cooling tubes 7 located at both ends of the buffer plate 3 divide the buffer plate 3 into a loading area 8, a cooling area 9 and a connecting area 10 in sequence. The oil outlet pipe 6 is located at one end inside the cooling box 2 at the upper end of the loading area 8, and the lubricating oil is received and collected through the loading area 8. The cooling area 9 cools the lubricating oil through the cooling tubes 7 and the coolant inside the cooling tubes 7. The coolant flowing inside the cooling tubes 7 can ensure the cooling effect on the lubricating oil. The design of multiple cooling tubes 7 can ensure the cooling effect.

[0030] Several cooling tubes 7 are respectively provided with edges 14 on the outside. The edges 14 are triangular prisms. A placement groove 15 is opened on the side of the edges 14. The axial direction of the placement groove 15 is the same as the axial direction of the edges 14. The cooling tube 7 is located inside the placement groove 15, and the cooling tube 7 and the placement groove 15 are adapted and fit together. The edges 14 and the buffer plate 3 are fixedly connected. A groove for collecting impurities is formed between two adjacent edges 14. When the lubricating oil passes through the edges 14 in the cooling zone 9 from the loading zone 8, the larger impurities in the lubricating oil have a certain mass, and the larger impurities will exist inside the groove, thereby separating the lubricating oil and the larger impurities. The design of multiple grooves can ensure the separation effect of larger impurities.

[0031] A filter port 11 connecting the upper chamber 4 and the lower chamber 5 is provided on the communication area 10, and a bottom filter screen 16 is horizontally arranged inside the lower chamber 5, the bottom filter screen 16 corresponds to the filter port 11, and the three ends of the bottom filter screen 16 are respectively fixedly connected to the three sides of the cooling box 2, the bottom filter screen 16 can filter the lubricating oil flowing into the lower chamber 5 through the filter port 11, thereby filtering the remaining impurities in the lubricating oil, and the other end face of the filter screen is fixedly connected to a side filter screen 17, the side filter screen 17 can increase the contact area with the lubricating oil and accelerate the filtering efficiency of the lubricating oil, the remaining three ends of the side filter screen 17 are respectively fixedly connected to the side of the cooling box 2 and the bottom surface of the buffer plate 3, the bottom filter screen 16 and the side filter screen 17 are at an acute angle, and the acute angle design between the bottom filter screen 16 and the side filter screen 17 can effectively prevent the impurities in the lubricating oil from being blocked in the mesh port of the side filter screen 17 due to the effect of gravity when the lubricating oil is filtered through the side filter screen 17, thereby ensuring the fluidity of the side filter screen 17.

[0032] Working principle:

[0033] When in use, the oil circuit output end of the reducer body 1 will transfer the lubricating oil to the interior of the upper chamber 4 through the oil outlet pipe 6, and the lubricating oil will drip onto the buffer plate 3 under the action of gravity, and the air in the upper chamber 4 will cool the lubricating oil. A cooling fan can be installed on the outside of the upper box body to cool the upper box body through the fan, thereby reducing the air temperature inside the upper chamber 4, thereby ensuring the cooling effect of the air in the upper chamber 4 on the lubricating oil. The lubricating oil will fall on the feeding area 8 of the buffer plate 3, and because the lubricating oil has fluidity, the lubricating oil will flow to the cooling area 9;

[0034] When the lubricating oil contacts the edge block 14, the edge block 14 will initially block the impurities in the lubricating oil, so that the impurities will be collected in the groove. At the same time, the edge block 14 will transfer the temperature to the edge block 14 to cool the lubricating oil. At the same time, the water inlet pipe 18 will pass the coolant, which can be tap water. The coolant is transferred to the inside of each cooling pipe 7 through the water inlet pipe 18. The cooling pipe 7 will cool the edge block 14 to ensure that the edge block 14 is always at a lower temperature. The lubricating oil will flow to the filter port 11;

[0035] The lubricating oil passing through the filter port 11 will fall on the bottom filter screen 16, and the bottom filter screen 16 performs secondary filtration on the lubricating oil. When the flow rate of the lubricating oil passing through the filter port 11 is greater than the flow rate passing through the bottom filter screen 16, the lubricating oil will gather at the bottom filter screen 16, and then flow to the side filter screen 17, and the lubricating oil will be filtered by the side filter screen 17. The filtered lubricating oil will be collected in the lower chamber 5, and the air in the lower chamber 5 will also continuously cool the lubricating oil. The cooling pipe 7 will also cool the buffer plate 3, and the buffer plate 3 can have a certain cooling effect on the temperature of the lower chamber 5.

[0036] The lubricating oil entering the lower chamber 5 will be re-delivered to the interior of the reducer body 1 through the oil pump 13 and the oil inlet pipe 12 for circulation. The design of the upper and lower boxes can facilitate the removal of the buffer plate 3, and at the same time clean the impurities in the groove, the bottom filter screen 16 and the side filter screen 17 to ensure the filtering effect.

Claims

1. A reducer external lubricating oil cooling device, characterized in that: The invention comprises a reducer body (1) and a cooling box (2) arranged on one side of the reducer body (1); a buffer plate (3) is arranged inside the cooling box (2); the buffer plate (3) divides the cooling box (2) into an upper chamber (4) and a lower chamber (5); an oil outlet pipe (6) is connected to the oil circuit at the output end of the reducer body (1); the oil outlet pipe (6) passes through the side of the cooling box (2) and is located in the upper chamber (4) inside the cooling box (2); a plurality of cooling pipes (7) for passing cooling water to cool the lubricating oil are evenly arranged on the buffer plate (3); and the oil outlet pipes (6) are located in the buffer plate (3). The cooling pipes (7) at both ends of the plate (3) divide the buffer plate (3) into a loading area (8), a cooling area (9) and a connecting area (10) in sequence; one end of the oil outlet pipe (6) located inside the cooling box (2) is located at the upper end of the loading area (8); a filter port (11) connecting the upper cavity (4) and the lower cavity (5) is provided on the connecting area (10); the oil inlet of the reducer is connected to an oil inlet pipe (12); the other end of the oil inlet pipe (12) passes through the side of the cooling box (2) and is located in the lower cavity (5); an oil pump (13) is installed on the oil inlet pipe (12).

2. The external lubricating oil cooling device for a reducer according to claim 1 is characterized in that: Edge blocks (14) are respectively arranged outside the plurality of cooling tubes (7), and a placement groove (15) is provided on the side of the edge block (14). The axial direction of the placement groove (15) is the same as the axial direction of the edge block (14). The cooling tube (7) is located inside the placement groove (15), and the cooling tube (7) and the placement groove (15) are adapted and fitted, and the edge block (14) and the buffer plate (3) are fixedly connected.

3. The external lubricating oil cooling device for a reducer according to claim 1 is characterized in that: A bottom filter screen (16) is horizontally arranged inside the lower chamber (5), the bottom filter screen (16) corresponds to the filter port (11), and the three ends of the bottom filter screen (16) are respectively fixedly connected to the three side surfaces of the cooling box (2), the other end surface of the filter screen is fixedly connected to a side filter screen (17), and the remaining three ends of the side filter screen (17) are respectively fixedly connected to the side surface of the cooling box (2) and the bottom surface of the buffer plate (3).

4. The external lubricating oil cooling device for a reducer according to claim 1 is characterized in that: A water inlet pipe (18) and a water outlet pipe (19) are provided on both sides of the cooling box (2); the water inlet pipe (18) and the water outlet pipe (19) are respectively located at the two ends of the cooling pipe (7); and the two ends of a plurality of cooling pipes (7) respectively pass through the corresponding side surfaces of the cooling box (2) and the water inlet pipe (18) to communicate with the water outlet pipe (19).

5. The external lubricating oil cooling device for a reducer according to claim 2 is characterized in that: The edge block (14) is a triangular prism.

6. The external lubricating oil cooling device for a reducer according to claim 3 is characterized in that: The bottom filter screen (16) and the side filter screen (17) are at an acute angle.

7. The external lubricating oil cooling device for a reducer according to claim 4 is characterized in that: The water inlet pipe (18) is in the shape of a tube with one end sealed.

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