Lubricating oil feeding device
By integrating multiple lubricators into a single unit in the lubrication system, with the inlet located on the inside and the outlet on the outside, and connecting them through an integrated piping system, the problems of large space occupation and complicated piping for multiple lubricators are solved, resulting in a reduction in the number of pipes and convenient maintenance.
Patent Information
- Application Number
- CN202520749061.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-18
AI Technical Summary
The existing lubrication system has multiple lubricators arranged separately, which results in a large space occupation, a large number of pipes, and is cumbersome and inconvenient to maintain.
Design a lubricating oil supply device, in which multiple oilers are arranged side by side on an integrated base, with the oil inlet located on the inside and the oil outlet located on the outside. The oil inlet and outlet of the oilers are connected by one oil inlet pipe and multiple oil outlet pipes, which reduces the number of pipes and facilitates layout and maintenance.
It reduces the number of pipes, simplifies pipe maintenance, saves space, and improves the space utilization efficiency of the equipment.
Smart Images
Figure CN223953797U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to oil feeding technical field, concretely relates to a lubricating oil feeding device. BACKGROUND
[0002] The lubricating system is the system that supplies lubricating oil for the friction pair of mechanical equipment, and its principle is that the oil pump pumps the lubricating oil in the oil tank to each lubricating point of the mechanical equipment, the oil liquid is caused to return to the oil tank under the action of gravity through the design pipeline, and a multi-point circulating system is formed. The oil feeder is the actuating mechanism of the lubricating system, is mainly used for controlling and opening the oil circuit, and feeds back the signal related to the flow state of the lubricating agent in the pipeline detected by the flow sensor or pressure switch to the main control system to control the opening and closing of the electromagnetic valve of the electromagnetic oil feeder, so that the flow monitoring is realized. In the working process, a plurality of oil feeders are used in cooperation to ensure that the oil supply meets the demand, and the plurality of oil feeders are arranged separately at present, occupy a larger space, and each oil feeder is separately supplied with oil, so that the number of pipelines is relatively large, complicated, and pipeline maintenance is not convenient. SUMMARY
[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the utility model provides a lubricating oil feeding device.
[0004] The utility model provides a lubricating oil feeding device, including integrated seat and a plurality of oil feeders who set up in the integrated seat paralleling, two oil inlets and two oil outlets have on the oil feeder along perpendicular to the arrangement direction of a plurality of oil feeders, two oil inlets are located in the inside of two oil outlets, the integrated seat is equipped with oil inlet pipeline and a plurality of oil outlet pipelines, a plurality of oil feeders oil inlets all with oil inlet pipeline intercommunication, two oil outlets of each oil feeder and with its corresponding oil outlet pipeline intercommunication.
[0005] Optionally, the integrated seat is equipped with first pipeline at the position corresponding to the oil inlet, one end of the first pipeline is communicated with the oil inlet, the outer periphery of the first pipeline is communicated with the outer periphery of the oil inlet pipeline;
[0006] And / or, the integrated seat is equipped with second pipeline at the position corresponding to the oil outlet, one end of the second pipeline is communicated with the oil outlet, the other end of the first pipeline is communicated with the outer periphery of the oil outlet pipeline.
[0007] Optionally, the oil inlet pipeline extends along the arrangement direction of a plurality of oil feeders.
[0008] Optionally, a plurality of oil outlet pipelines all extend along the direction perpendicular to the arrangement direction of a plurality of oil feeders.
[0009] Optionally, the oil feeder is detachably connected to the integrated seat.
[0010] Optionally, a side of the oil feeder facing the integrated seat is provided with a threaded hole, and the integrated seat is provided with a through hole at a position corresponding to the threaded hole, and an end of a bolt can pass through the through hole and be screwed in the threaded hole.
[0011] Optionally, the oil feeder comprises:
[0012] The valve seat assembly comprises a valve seat and a valve core rotatably arranged inside a valve cavity of the valve seat.
[0013] The piston assembly comprises a piston seat arranged on a side of the valve seat and a piston rod slidingly arranged inside a piston cavity of the piston seat, and the piston rod divides the piston cavity into a first oil cavity and a second oil cavity.
[0014] The valve seat is provided with a first oil supply oil passage, a second oil supply oil passage, a first oil return oil passage and a second oil return oil passage, oil supply ends of the first oil supply oil passage and the second oil supply oil passage form the oil inlet, oil outlet ends of the first oil return oil passage and the second oil return oil passage form the oil outlet, one end of the first oil supply oil passage and the first oil return oil passage is in communication with the first oil cavity, and one end of the second oil supply oil passage and the second oil return oil passage is in communication with the second oil cavity.
[0015] The valve core can control the synchronous on-off of the first oil supply oil passage and the second oil return oil passage and the synchronous on-off of the second oil supply oil passage and the first oil return oil passage by rotation of the valve core.
[0016] Optionally, the valve core is provided with a first communication hole, a second communication hole, a third communication hole and a fourth communication hole for communicating the first oil supply oil passage, the second oil supply oil passage, the first oil return oil passage and the second oil return oil passage, the first communication hole and the fourth communication hole have the same extension direction, the second communication hole and the third communication hole have the same extension direction, and the first communication hole, the second communication hole, the third communication hole and the fourth communication hole can rotate to a communication position or a cut-off position with rotation of the valve core.
[0017] Optionally, the extension direction of the first communication hole and the fourth communication hole is perpendicular to the extension direction of the second communication hole and the third communication hole.
[0018] Optionally, the valve seat is provided with a driving member for driving the valve core to rotate.
[0019] The technical scheme provided by the embodiment of the utility model has the following advantages compared with the prior art:
[0020] The lubricating oil supply device provided by this utility model integrates multiple oilers arranged in parallel on an integrated base, with the oil inlet located on the inner side and the oil outlet located on the outer side. The oil inlet and oil outlet of the oilers can be connected through one oil inlet pipe and multiple oil outlet pipes respectively, and then connected to the oil inlet pipe and the oil outlet pipe. This reduces the number of pipes, facilitates pipe layout and maintenance, and reduces space occupation. Attached Figure Description
[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the structure of the lubricating oil supply device according to an embodiment of the present invention;
[0024] Figure 2 This is a schematic diagram of the structure of the integrated base according to an embodiment of the present utility model;
[0025] Figure 3 This is a schematic diagram of the internal structure of the integrated base according to an embodiment of the present utility model;
[0026] Figure 4 This is a schematic diagram of the structure of the oiler described in the embodiment of this utility model;
[0027] Figure 5 This is a cross-sectional view of the oiler described in an embodiment of the present utility model.
[0028] Explanation of reference numerals in the attached figures
[0029] 1. Integrated base; 11. Oil inlet pipe; 12. Oil outlet pipe; 13. First pipe; 14. Second pipe; 15. Through hole; 2. Oil feeder; 21. Oil inlet; 22. Oil outlet; 23. Threaded hole; 3. Valve seat assembly; 31. Valve seat; 32. Valve core; 321. First connecting hole; 322. Second connecting hole; 323. Third connecting hole; 324. Fourth connecting hole; 33. First oil supply circuit; 34. Second oil supply circuit; 35. First oil return circuit; 36. Second oil return circuit; 37. Drive component; 4. Piston assembly; 41. Piston seat; 42. Piston rod; 43. Second oil chamber. Detailed Implementation
[0030] In order to enable the above-mentioned purposes, features and advantages of the present application to be more clearly understood, the following will further describe the present application. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0031] Many specific details are set forth in the following description in order to provide a thorough understanding of the present application. However, the present application can be practiced according to other embodiments that are not described in detail herein; obviously, the embodiments described in the specification are only a part of the embodiments of the present application, not all the embodiments.
[0032] In combination with Figures 1 to 3 The lubricating oil feeding device provided by the present application comprises an integrated seat 1 and a plurality of oil feeders 2 arranged side by side on the integrated seat 1, and the plurality of oil feeders 2 are arranged in sequence to reduce the space occupation. The oil feeder 2 has two oil inlets 21 and two oil outlets 22 along the direction perpendicular to the arrangement direction of the plurality of oil feeders 2. Specifically, the two oil inlets 21 and the two oil outlets 22 are arranged along the z-axis direction in the Figure 3 The integrated seat 1 is provided with an oil inlet pipeline 11 and a plurality of oil outlet pipelines 12, and the number of the oil outlet pipelines 12 is the same as the number of the oil feeders 2, so that each oil feeder 2 corresponds to an oil outlet pipeline 12. The oil inlets 21 of the plurality of oil feeders 2 are in communication with the oil inlet pipeline 11, that is, the two oil inlets 21 on each oil feeder 2 are in communication with the oil inlet pipeline 11. Among them, the plurality of oil inlets 21 can be directly communicated with the oil inlet pipeline 11, or indirectly communicated through other pipelines. The two oil outlets 22 of each oil feeder 2 are in communication with the corresponding oil outlet pipeline 12, wherein each oil outlet 22 can be directly connected with the corresponding oil outlet pipeline 12, or indirectly connected through other pipelines, which are not limited.
[0033] The lubricating oil feeding device provided by the present application integrates a plurality of oil feeders 2 arranged side by side on the integrated seat 1, and the oil inlets 21 are located on the inner side and the oil outlets 22 are located on the outer side. The oil inlets 21 and the oil outlets 22 of the oil feeders 2 can be respectively communicated through one oil inlet pipeline 11 and a plurality of oil outlet pipelines 12, and then connected with the oil inlet pipeline and the oil outlet pipeline, so as to reduce the number of pipelines, facilitate pipeline arrangement and maintenance, and reduce space occupation.
[0034] In some embodiments, in combination with Figure 2 and Figure 3 As shown in the accompanying drawings, the integrated seat 1 is provided with a first pipeline 13 at a position corresponding to the oil inlet 21. The oil inlet 21 of the oil feeder 2 is two, so the corresponding first pipeline 13 is two. The two first pipelines 13 are located on the two sides of the oil inlet pipeline 11 along the z-axis direction, and the first pipeline 13 is arranged along Figure 3The first pipeline 13 extends along the y-axis direction in the drawing. One end of the first pipeline 13 is in communication with the oil inlet 21, and the outer periphery of the first pipeline 13 is in communication with the outer periphery of the oil inlet pipeline 11, so that the lubricating oil in the oil inlet pipeline 11 flows to the oil inlet 21 of the oil feeder 2 through the first pipeline 13, and the communication of the peripheral wall increases the oil inlet size and ensures that the oil inlet amount meets the demand.
[0035] In some embodiments, continuing to refer to Figure 2 and Figure 3 , the integrated seat 1 is provided with a second pipeline 14 at a position corresponding to the oil outlet 22. The second pipeline 14 extends along the y-axis direction in the drawing. One end of the second pipeline 14 is in communication with the oil outlet 22, and the other end of the first pipeline 13 is in communication with the outer periphery of the oil outlet pipeline 12. Figure 3
[0036] In this design, the oil inlet pipeline 11 and the oil inlet 21 of the oil feeder 2 are in communication through the first pipeline 13, and the oil outlet pipeline 12 and the oil outlet 22 of the oil feeder 2 are in communication, which facilitates the opening and planning of the pipeline and makes the flow of lubricating oil more smooth.
[0037] In some embodiments, as shown in Figure 3 , the oil inlet pipeline 11 extends along the arrangement direction of the plurality of oil feeders 2. Specifically, the oil inlet pipeline 11 extends along the x-axis direction in the drawing. This design facilitates the opening of the oil inlet pipeline 11 and facilitates the connection between the oil inlet pipeline 11 and the oil inlet pipeline. Figure 3
[0038] In some embodiments, as shown in Figure 3 , the plurality of oil outlet pipelines 12 each extend along a direction perpendicular to the arrangement direction of the plurality of oil feeders 2. Specifically, the plurality of oil outlet pipelines 12 each extend along the z-axis direction in the drawing, and the plurality of oil outlet pipelines 12 are arranged at intervals along the x-axis direction in the drawing. This design facilitates the opening of the oil outlet pipeline 12 and facilitates the connection between the oil outlet pipeline 12 and the oil outlet pipeline. Figure 3 Figure 3
[0039] In some embodiments, the oil feeder 2 and the integrated seat 1 are connected in a detachable manner. In this design, the oil feeder 2 is convenient to disassemble and repair, increasing the convenience of operation.
[0040] In some embodiments, as shown in Figure 3 and Figure 3 , the side of the oil feeder 2 facing the integrated seat 1 is provided with a plurality of screw holes 23, and the plurality of screw holes 23 are uniformly distributed on the oil feeder 2. The integrated seat 1 is provided with a through hole 15 at a position corresponding to the screw hole 23. The through hole 15 extends along the y-axis direction in the drawing. Figure 3 Extending along the y-axis, the end of the bolt can pass through the through hole 15 and be screwed into the screw hole 23 to achieve the connection between the oiler 2 and the integrated base 1.
[0041] This design increases the strength of the connection and the ease of assembly and disassembly.
[0042] In some implementations, such as Figure 4 As shown, the lubricator 2 includes a valve seat assembly 3 and a piston assembly 4. The valve seat assembly 3 includes a valve seat 31 and a valve core 32 rotatably disposed inside the valve chamber of the valve seat 31. The piston assembly 4 includes a piston seat 41 disposed on the side of the valve seat 31 and a piston rod 42 slidably disposed inside the piston chamber of the piston seat 41. The piston rod 42 divides the piston chamber into a first oil chamber and a second oil chamber 43. The design and connection method of the piston seat 41 and the valve seat 31 are not limited. For example, the piston seat 41 and the valve seat 31 can be designed as separate units, in which case they can be fixed by bolts to increase the convenience of disassembly and assembly; or, for example, the piston seat 41 and the valve seat 31 can be integrally formed to form a seat body, with the valve chamber and the piston chamber located within the same seat body. These are not limiting factors. The axial dimension of the piston chamber is larger than the length dimension of the piston rod 4222, so that the piston rod 42 can move axially within the piston chamber. Piston rod 42 divides the piston chamber into a first oil chamber and a second oil chamber 43, so as to Figure 3 Taking the direction shown as an example, a first oil chamber is formed on the left side of the piston rod 42, and a second oil chamber 43 is formed on the right side of the piston rod 42.
[0043] The valve seat 31 is provided with a first oil supply passage 33, a second oil supply passage 34, a first oil return passage 35, and a second oil return passage 36. The oil supply ends of the first oil supply passage 33 and the second oil supply passage 34 form an oil inlet 21, and the oil outlet ends of the first oil return passage 35 and the second oil return passage 36 form an oil outlet 22. One end of the first oil supply passage 33 and the first oil return passage 35 is connected to the first oil chamber. Specifically, the end of the first oil supply passage 33 and the first oil return passage 35 near the piston seat 41 is connected to the first oil chamber. The other end of the first oil supply passage 33 and the first oil return passage 35 respectively form an oil inlet 21 and an oil outlet 22 on the side of the valve seat 31 for introducing or drawing out lubricating oil to supply oil to the corresponding components. One end of the second oil supply passage 34 and the second oil return passage 36 is connected to the second oil chamber 43. Specifically, the end of the second oil supply passage 34 and the second oil return passage 36 near the piston seat 41 is connected to the second oil chamber 43. The other end of the second oil supply passage 34 and the second oil return passage 36 form an oil inlet 21 and an oil outlet 22 on the side of the valve seat 31, respectively, for introducing or drawing out lubricating oil to supply oil to the corresponding components.
[0044] The valve core 32 can control the synchronous on-off of the first oil supply oil way 33 and the second oil return oil way 36, and control the synchronous on-off of the second oil supply oil way 34 and the first oil return oil way 35 by rotation of the valve core 32. Specifically, when supplying oil to the first oil chamber, the first oil supply oil way 33 and the second oil return oil way 36 are connected, the second oil supply oil way 34 and the first oil return oil way 35 are disconnected, lubricating oil enters the first oil chamber through the first oil supply oil way 33 to push the piston rod 42 to move towards the second oil chamber 43, at this time, the lubricating oil in the second oil chamber 43 flows out through the second oil return oil way 36 for oil supply of corresponding parts. When supplying oil to the second oil chamber 43, the second oil supply oil way 34 and the first oil return oil way 35 are connected, the first oil supply oil way 33 and the second oil return oil way 36 are disconnected, lubricating oil enters the second oil chamber 43 through the second oil supply oil way 34 to push the piston rod 42 to move towards the first oil chamber, at this time, the lubricating oil in the first oil chamber flows out through the first oil return oil way 35 for oil supply of corresponding parts.
[0045] The oil feeder 2 in this design adopts a rotary valve driving structure, reduces the space occupation of the valve seat 31 in the axial direction, and the piston seat 41 is located on one side of the valve seat 31, so that the overall structure is more compact, the overall structure size of the oil feeder 2 is reduced, and the oil inlet 21 of the first oil supply oil way 33 and the second oil supply oil way 34 can be located inside the oil outlet 22 of the first oil return oil way 35 and the second oil return oil way 36, and the two oil inlets 21 and the two oil outlets 22 are arranged along the z-axis direction in the integrated seat 1, which is convenient for the connection of the oil feeder 2 and the integrated seat 1, and the opening of the pipeline in the integrated seat 1, so that the overall structure of the lubricating oil feeder is more compact. Figure 5
[0046] In some embodiments, continuing to refer to Figure 5 Figure 3 Figure 5 The first communication hole 321 and the fourth communication hole 324 have the same extension direction, the second communication hole 322 and the third communication hole 323 have the same extension direction, and the first communication hole 321, the second communication hole 322, the third communication hole 323 and the fourth communication hole 324 can rotate to a communication position or a cut-off position with the rotation of the valve core 32, i.e., the first oil supply oil way 33, the second oil supply oil way 34, the first oil return oil way 35 and the second oil return oil way 36 are disconnected at the position of the valve core 32, and the disconnected position can be connected through the first communication hole 321, the second communication hole 322, the third communication hole 323 and the fourth communication hole 324. When the first communication hole 321, the second communication hole 322, the third communication hole 323 and the fourth communication hole 324 can rotate to the communication position with the rotation of the valve core 32, the disconnected position of the first oil supply oil way 33, the second oil supply oil way 34, the first oil return oil way 35 and the second oil return oil way 36 is connected through the first communication hole 321, the second communication hole 322, the third communication hole 323 and the fourth communication hole 324 respectively. When the first communication hole 321, the second communication hole 322, the third communication hole 323 and the fourth communication hole 324 can rotate to the cut-off position with the rotation of the valve core 32, the valve core 32 can cut off the first oil supply oil way 33, the second oil supply oil way 34, the first oil return oil way 35 and the second oil return oil way 36.
[0047] In this design, when the first communication hole 321 and the fourth communication hole 324 rotate to the communication position, the first oil supply oil way 33 and the second oil return oil way 36 can be connected through the first communication hole 321 and the fourth communication hole 324 respectively, at this time, the second communication hole 322 and the third communication hole 323 rotate to the cut-off position, and the second oil supply oil way 34 and the first oil return oil way 35 are cut off by the peripheral wall of the valve core 32. When the second communication hole 322 and the third communication hole 323 rotate to the communication position, the second oil supply oil way 34 and the first oil return oil way 35 are connected through the second communication hole 322 and the third communication hole 323 respectively, at this time, the first communication hole 321 and the fourth communication hole 324 rotate to the cut-off position, and the first oil supply oil way 33 and the second oil return oil way 36 are cut off by the peripheral wall of the valve core 32, which is convenient for operation and compact in structure.
[0048] In some embodiments, the extension direction of the first communication hole 321 and the fourth communication hole 324 is perpendicular to the extension direction of the second communication hole 322 and the third communication hole 323. In this design, the valve core 32 can complete the opening and closing of the oil way once every 180 degrees, which is convenient for oil supply counting.
[0049] In some embodiments, the valve seat 31 is provided with a driving member 37 for driving the valve core 32 to rotate. The driving member 37 can drive the valve core 32 to rotate. The driving member 37 can be a driving motor or a combination of a driving motor and a speed reducer, which are not limited.
[0050] It should be noted that, in this document, the terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.
[0051] The above description is only a specific embodiment of the present application, so that those skilled in the art can understand or implement the present application. Various modifications of these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments described herein, but will conform to the widest scope consistent with the principles and novel features described herein.
Claims
1. A lubricating oil supply device, characterized in that, The device includes an integrated base (1) and multiple oilers (2) arranged side by side on the integrated base (1). Each oiler (2) has two oil inlets (21) and two oil outlets (22) along a direction perpendicular to the arrangement of the multiple oilers (2). The two oil inlets (21) are located inside the two oil outlets (22). The integrated base (1) is provided with an oil inlet pipe (11) and multiple oil outlet pipes (12). The oil inlets (21) of the multiple oilers (2) are all connected to the oil inlet pipe (11). The two oil outlets (22) of each oiler (2) are connected to the corresponding oil outlet pipes (12).
2. The lubricating oil supply device according to claim 1, characterized in that, The integrated base (1) is provided with a first pipeline (13) at a position corresponding to the oil inlet (21). One end of the first pipeline (13) is connected to the oil inlet (21), and the outer periphery of the first pipeline (13) is connected to the outer periphery of the oil inlet pipeline (11). And / or, the integrated base (1) is provided with a second pipeline (14) at a position corresponding to the oil outlet (22), one end of the second pipeline (14) is connected to the oil outlet (22), and the other end of the first pipeline (13) is connected to the outer periphery of the oil outlet pipeline (12).
3. The lubricating oil supply device according to claim 1, characterized in that, The oil inlet line (11) extends along the arrangement direction of the plurality of oilers (2).
4. The lubricating oil supply device according to claim 1, characterized in that, The multiple oil outlet lines (12) extend along a direction perpendicular to the arrangement of the multiple oilers (2).
5. The lubricating oil supply device according to claim 1, characterized in that, The oiler (2) and the integrated base (1) are connected in a detachable manner.
6. The lubricating oil supply device according to claim 1, characterized in that, The oiler (2) has a screw hole (23) on the side facing the integrated base (1). The integrated base (1) has a through hole (15) at the position corresponding to the screw hole (23). The end of the bolt can pass through the through hole (15) and be screwed into the screw hole (23).
7. The lubricating oil supply device according to any one of claims 1 to 6, characterized in that, The oiler (2) includes: The valve seat assembly (3) includes a valve seat (31) and a valve core (32) rotatably disposed inside the valve cavity of the valve seat (31); The piston assembly (4) includes a piston seat (41) disposed on the side of the valve seat (31) and a piston rod (42) slidably disposed inside the piston chamber of the piston seat (41), the piston rod (42) dividing the piston chamber into a first oil chamber and a second oil chamber (43). The valve seat (31) is provided with a first oil supply passage (33), a second oil supply passage (34), a first oil return passage (35), and a second oil return passage (36). The oil supply ends of the first oil supply passage (33) and the second oil supply passage (34) form the oil inlet (21), and the oil outlet ends of the first oil return passage (35) and the second oil return passage (36) form the oil outlet (22). One end of the first oil supply passage (33) and the first oil return passage (35) is connected to the first oil chamber, and one end of the second oil supply passage (34) and the second oil return passage (36) is connected to the second oil chamber (43). The valve core (32) can control the synchronous opening and closing of the first oil supply circuit (33) and the second oil return circuit (36) and the synchronous opening and closing of the second oil supply circuit (34) and the first oil return circuit (35) by its own rotation.
8. The lubricating oil supply device according to claim 7, characterized in that, The valve core (32) is provided with a first connecting hole (321), a second connecting hole (322), a third connecting hole (323), and a fourth connecting hole (324) for connecting the first oil supply circuit (33), the second oil supply circuit (34), the first oil return circuit (35), and the second oil return circuit (36). The first connecting hole (321) and the fourth connecting hole (324) extend in the same direction, and the second connecting hole (322) and the third connecting hole (323) extend in the same direction. The first connecting hole (321), the second connecting hole (322), the third connecting hole (323), and the fourth connecting hole (324) can rotate to the connecting position or the shut-off position as the valve core (32) rotates.
9. The lubricating oil supply device according to claim 8, characterized in that, The extension directions of the first connecting hole (321) and the fourth connecting hole (324) are perpendicular to the extension directions of the second connecting hole (322) and the third connecting hole (323).
10. The lubricating oil supply device according to claim 7, characterized in that, The valve seat (31) is provided with a drive member (37) for rotating the valve core (32).