An intermediate bearing seat

Abstract

The present application relates to a kind of intermediate bearing seat, including main body, the main body is provided with crankshaft seat hole, the inside wall of the crankshaft seat hole is provided with annular oil groove, the outer peripheral wall of the main body is provided with oil hole, and the oil groove is communicated with oil hole;Two concaves and two arc-shaped heat dissipation channels are provided on the main body, two concaves are arranged on the upper surface of the main body, two concaves are arranged left and right, two heat dissipation channels are arranged front and back, and the two ends of the heat dissipation channel extend to two concaves respectively, the heat on the main body is discharged by the flow of air in the heat dissipation channel, and the heat dissipation capacity of the main body is improved;The air discharged from nozzle acts on crankshaft, and the heat dissipation capacity of crankshaft is improved;Part of air discharged from nozzle is sent to cooling pipe and then discharged from exhaust pipe, cooling pipe absorbs heat in oil and transfers to air in cooling pipe, thereby realizing the heat dissipation of oil, and avoiding high temperature to affect the viscosity of oil and reduce the lubricating effect.

Description

Technical Field

[0001] This invention relates to an intermediate bearing housing, belonging to the technical field of bearing housings. Background Technology

[0002] With advancements in engine technology, there are increasingly higher demands for engines to achieve energy conservation, reduced emissions, and lower noise and vibration. Improving engine fuel efficiency and economy requires both reducing the weight of components and decreasing inertia, and increasing combustion pressure to enhance combustion efficiency. However, high combustion pressure inevitably generates significant noise and vibration, impacting the engine's noise and vibration performance. Therefore, balancing engine energy consumption and noise / vibration performance has long been a challenge for engineers in the engine field.

[0003] A tunnel-type engine primarily refers to an engine whose crankshaft mounting position is a tunnel-like structure. After the crankshaft bearing housing is assembled, it is inserted into the tunnel-shaped crankshaft mounting hole. This engine block structure offers superior mechanical strength and positioning accuracy compared to split or gantry-type engine block structures. Furthermore, as a critical component connecting moving parts to the engine body, the crankshaft bearing housing in a tunnel-type engine significantly impacts the engine's performance, as well as its noise and vibration characteristics.

[0004] Utility model patent application number CN201521114467.5 discloses a tunnel-type crankshaft intermediate bearing housing for an engine, comprising a mating upper bearing housing, a lower bearing housing, an oil passage connected to the engine lubrication oil passage, and an oil groove on the surface of the crankshaft housing bore. The outer dimensions of the upper and lower bearing housings are symmetrical with respect to the center point of the crankshaft housing bore. Due to its reinforcing rib structure, it can effectively absorb the impact load transmitted by the engine piston, reducing engine energy consumption and noise and vibration under higher combustion and explosion pressures.

[0005] However, when the crankshaft rotates during use, the bearing housing will generate heat due to friction. If the temperature of the bearing housing is too high, it will cause deformation or damage, resulting in the engine being unable to operate.

[0006] Therefore, an intermediate bearing housing is needed to improve heat dissipation. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide an intermediate bearing housing that improves heat dissipation capacity in order to overcome the shortcomings of the prior art.

[0008] The technical solution adopted by the present invention to solve the above problems is as follows: an intermediate bearing housing, comprising a main body, wherein a crankshaft seat hole is provided on the main body, an annular oil groove is provided on the inner side wall of the crankshaft seat hole, and an oil hole is provided on the outer peripheral wall of the main body, wherein the oil groove and the oil hole are in communication.

[0009] The main body is provided with two concave and two arc-shaped heat dissipation channels. The two concave are both located on the upper outer surface of the main body and are arranged left and right. The two heat dissipation channels are arranged front and back. The two ends of the heat dissipation channels extend to the two concave. The main body is provided with multiple air outlets that extend to the front and back sides of the main body. The two ends of each air outlet are equipped with nozzles. The main body is provided with two air intake mechanisms that are respectively located in the two concave. The air intake mechanisms are used to supply air into the heat dissipation channels.

[0010] An annular cooling pipe is installed in the oil sump. Multiple connecting pipes are inserted through the cooling pipe and are circumferentially distributed around the axis of the crankshaft seat hole. The connecting pipes are fixedly passed through the front and rear sides of the main body. A receiving pipe is provided at both ends of the connecting pipe. The receiving pipe is located on the side of the nozzle closer to the axis of the crankshaft seat hole. An exhaust pipe is also installed through the cooling pipe and is fixedly passed through the front and rear sides of the main body. The receiving pipe, connecting pipe, cooling pipe and exhaust pipe are connected in sequence.

[0011] Preferably, the air intake mechanism includes an air intake manifold, one end of which is sealed. The air intake manifold is detachably and fixedly connected to the main body. Two air intake branch pipes are connected to the air intake manifold, and the two air intake branch pipes correspond one-to-one with two heat dissipation channels. The two air intake branch pipes are respectively inserted into the ports of the two heat dissipation channels in the same concave area.

[0012] Preferably, the intake manifold is provided with an upper support and a lower support, which are locked together by a first screw. The upper support and the lower support together form an air pipe installation channel, through which the intake manifold passes. The lower support is locked to the main body by a second screw.

[0013] Preferably, the main body includes an upper seat and a lower seat, which are arranged in close contact with each other. The axis of the crankshaft seat hole is located in the plane where the contact surfaces of the upper and lower seats are located. The upper and lower seats are locked together by two bolts arranged symmetrically from left to right. Hollow positioning pins are coaxially sleeved on the bolts. One end of the positioning pin is inserted into the bottom of the upper seat, and the other end of the positioning pin is inserted into the top of the lower seat.

[0014] Preferably, the cooling pipe is formed by splicing two cooling branch pipes arranged symmetrically at the top and bottom.

[0015] Preferably, the splicing surfaces of the two cooling branch pipes are on the same plane as the mating surfaces of the upper and lower seats.

[0016] Preferably, the recess and the exhaust pipe are both located on the upper seat, while the nozzle, the receiving pipe, and the connecting pipe are all located on the lower seat.

[0017] Preferably, the main body is provided with reinforcing ribs.

[0018] Preferably, the main body is provided with a weight reduction notch.

[0019] Preferably, a bearing groove is provided on the inner wall of the crankshaft seat hole.

[0020] Compared with the prior art, the advantages of the present invention are as follows:

[0021] 1. By allowing air to flow through the heat dissipation channels, heat is expelled from the main body, thus improving its heat dissipation capacity;

[0022] 2. The air discharged from the nozzle acts on the crankshaft, improving the crankshaft's heat dissipation capacity;

[0023] 3. Part of the air discharged from the nozzle is delivered to the cooling pipe and then discharged from the exhaust pipe. The cooling pipe absorbs the heat in the oil and transfers it to the air inside the cooling pipe, thereby achieving heat dissipation of the oil and preventing high temperature from affecting the viscosity of the oil and reducing the lubrication effect. Attached Figure Description

[0024] Figure 1 This is a perspective view of an intermediate bearing housing according to the present invention;

[0025] Figure 2 This is an exploded view of an intermediate bearing housing according to the present invention;

[0026] Figure 3 for Figure 1 The main view;

[0027] Figure 4 for Figure 1 The left view;

[0028] Figure 5 for Figure 1 Top view;

[0029] Figure 6 for Figure 5 A sectional view along the AA direction;

[0030] Figure 7 A structural diagram of the main body;

[0031] Figure 8 This is a schematic diagram of the lower part of the structure;

[0032] Figure 9This is a schematic diagram of the upper seat structure;

[0033] Figure 10 This is a 3D view of the air intake mechanism;

[0034] Figure 11 This is an exploded view of the air intake mechanism;

[0035] Figure 12 This is a schematic diagram of the cooling pipe structure.

[0036] in:

[0037] Main body 101, crankshaft seat hole 102, oil groove 103, oil hole 104, bearing groove 105, weight reduction notch 106, whole machine mounting hole 107, reinforcing rib 108;

[0038] Upper seat 101.1, lower seat 101.2, bolt 101.3, locating pin 101.4;

[0039] 201 recessed area, 202 heat dissipation channel, 203 air outlet, 204 nozzle, 205 air intake mechanism;

[0040] Intake main pipe 205.1, intake branch pipe 205.2, upper support 205.3, lower support 205.4, first screw 205.5, second screw 205.6;

[0041] Cooling pipe 301, connecting pipe 302, receiving pipe 303, exhaust pipe 304;

[0042] Cooling branch pipe 301.1. Detailed Implementation

[0043] like Figure 1-12 As shown, an intermediate bearing housing in this embodiment includes a main body 101, on which a crankshaft seat hole 102 is provided. An annular oil groove 103 is provided on the inner wall of the crankshaft seat hole 102. The oil groove 103 is coaxially arranged with the crankshaft seat hole 102. Two symmetrically arranged oil holes 104 are provided on the outer peripheral wall of the main body 101. The oil groove 103 communicates with the oil holes 104. A bearing groove 105 is provided on the inner wall of the crankshaft seat hole 102. The bearing groove 105 is used for installing bearings and positioning bearings.

[0044] The main body 101 is provided with two concave sections 201 and two arc-shaped heat dissipation channels 202. The two concave sections 201 are both located on the upper outer surface of the main body 101 and are arranged symmetrically from left to right. The two heat dissipation channels 202 are arranged front to back, with both ends of the heat dissipation channels 202 extending to the two concave sections 201 respectively. The main body 101 is provided with multiple air outlets 203, which are circumferentially distributed with the axis of the crankshaft seat hole 102 as the center. The air outlets 203 extend to the front and rear sides of the main body 101. Each end of the air outlet 203 is equipped with a nozzle 204, which is arranged towards the axis of the crankshaft seat hole 102. The main body 101 is provided with two air intake mechanisms 205, which are respectively located at the two concave sections 201. The air intake mechanisms 205 are used to supply air into the heat dissipation channels 202.

[0045] The air intake mechanism 205 includes an air intake main pipe 205.1, one end of which is sealed, and the other end of which is connected to an external air supply device, which can be an air pump. The air intake main pipe 205.1 is detachably and fixedly connected to the main body 101. Two air intake branch pipes 205.2 are connected to the air intake main pipe 205.1. The two air intake branch pipes 205.2 correspond one-to-one with two heat dissipation channels 202. The two air intake branch pipes 205.2 are respectively inserted into the ports of the two heat dissipation channels 202 at the same recess 201.

[0046] The intake manifold 205.1 is provided with an upper support seat 205.3 and a lower support seat 205.4. The upper support seat 205.3 and the lower support seat 205.4 are locked together by a first screw 205.5. The upper support seat 205.3 and the lower support seat 205.4 together form an air pipe installation channel. The intake manifold 205.1 passes through the air pipe installation channel. The lower support seat 205.4 is locked to the main body 101 by a second screw 205.6.

[0047] An annular cooling pipe 301 is provided inside the oil sump 103. Multiple connecting pipes 302 are inserted through the cooling pipe 301. The multiple connecting pipes 302 are circumferentially distributed with the axis of the crankshaft seat hole 102 as the center. The connecting pipes 302 are fixedly passed through the front and rear sides of the main body 101 and are parallel to the front and rear direction. A receiving pipe 303 is provided at both ends of the connecting pipe 302. The receiving pipe 303 is located on the side of the nozzle 204 near the axis of the crankshaft seat hole 102. An exhaust pipe 304 is also provided through the cooling pipe 301. The exhaust pipe 304 is fixedly passed through the front and rear sides of the main body 101. The receiving pipe 303, connecting pipe 302, cooling pipe 301 and exhaust pipe 304 are connected in sequence.

[0048] The main body 101 includes an upper seat 101.1 and a lower seat 101.2, which are arranged in close contact with each other. The axis of the crankshaft seat hole 102 is located in the plane where the contact surfaces of the upper seat 101.1 and the lower seat 101.2 are located. The upper seat 101.1 and the lower seat 101.2 are locked together by two bolts 101.3 arranged symmetrically on the left and right. A hollow positioning pin 101.4 is coaxially sleeved on the bolt 101.3. One end of the positioning pin 101.4 is inserted into the bottom of the upper seat 101.1, and the other end of the positioning pin 101.4 is inserted into the top of the lower seat 101.2.

[0049] The recess 201 and the exhaust pipe 304 are both provided on the upper seat 101.1, and the nozzle 204, the receiving pipe 303 and the connecting pipe 302 are all provided on the lower seat 101.2;

[0050] The upper seat 101.1 is provided with a weight reduction notch 106;

[0051] The lower base 101.2 is provided with two symmetrically arranged mounting holes 107;

[0052] The cooling pipe 301 is formed by splicing two cooling branch pipes 301.1 arranged symmetrically above and below, and the splicing surface of the two cooling branch pipes 301.1 is on the same plane as the contact surface of the upper seat 101.1 and the lower seat 101.2;

[0053] The main body 101 is provided with reinforcing ribs 108, which can effectively absorb the impact load transmitted by the engine piston. Under the higher combustion and explosion pressure of the engine, it not only reduces engine energy consumption, but also effectively reduces engine noise and vibration.

[0054] During use, the intermediate bearing housing is first removed by unscrewing bolt 101.3 and separating the upper housing 101.1 and the lower housing 101.2. Then, the upper housing 101.1 and the lower housing 101.2 are assembled around the crankshaft, and the bearing bush is installed on the crankshaft. The bearing bush is installed into the bearing bush groove 105 and positioned by the bearing bush groove 105. Finally, the upper housing 101.1 and the lower housing 101.2 are locked together by bolt 101.3.

[0055] During crankshaft rotation, engine oil is supplied from oil hole 104 to oil sump 103. The oil in oil sump 103 acts on the crankshaft and bearings to lubricate the crankshaft. Simultaneously, an external air supply device supplies air to the two intake manifolds 205.1. The air in intake manifold 205.1 is supplied to the cooling channel 202 through intake branch pipe 205.2. The air in the cooling channel 202 is then discharged from nozzle 204. Part of the air discharged from nozzle 204 acts on the crankshaft to dissipate heat, while the remaining air discharged from nozzle 204 is supplied from receiving pipe 303 to connecting pipe 302. The air in connecting pipe 302... After being supplied from the cooling pipe 301 to the exhaust pipe 304, the air is discharged from both ends of the exhaust pipe 304. Through the flow of air in the heat dissipation channel 202, the air can absorb the heat of the main body 101 and discharge it. The air acts on the crankshaft, which accelerates the air flow around the crankshaft and improves the cooling effect of the crankshaft. In addition, in order to control the temperature of the air discharged from the nozzle 204, the air input from the intake manifold 205.1 is cooled. Through the flow of air in the cooling pipe 301, the heat in the oil is transferred to the air in the cooling pipe 301 and discharged, thereby achieving heat dissipation of the oil and preventing high temperature from affecting the viscosity of the oil and reducing the lubrication effect.

[0056] In addition to the above embodiments, the present invention also includes other embodiments. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of the present invention.

Claims

1. An intermediate bearing housing, characterized in that: The system includes a main body (101), on which a crankshaft seat hole (102) is provided, and an annular oil groove (103) is provided on the inner side wall of the crankshaft seat hole (102). An oil hole (104) is provided on the outer peripheral wall of the main body (101), and the oil groove (103) and the oil hole (104) are connected. The main body (101) is provided with two concave sections (201) and two arc-shaped heat dissipation channels (202). The two concave sections (201) are both located on the upper outer surface of the main body (101). The two concave sections (201) are arranged left and right, and the two heat dissipation channels (202) are arranged front and back. The two ends of the heat dissipation channels (202) extend to the two concave sections (201) respectively. The main body (101) is provided with multiple air outlets (203). The air outlets (203) extend to the front and back sides of the main body (101). The two ends of the air outlets (203) are each equipped with a nozzle (204). The main body (101) is provided with two air intake mechanisms (205). The two air intake mechanisms (205) are respectively located at the two concave sections (201). The air intake mechanisms (205) are used to supply air into the heat dissipation channels (202). An annular cooling pipe (301) is provided in the oil sump (103). Multiple connecting pipes (302) are inserted through the cooling pipe (301). The multiple connecting pipes (302) are distributed circumferentially around the axis of the crankshaft seat hole (102). The connecting pipes (302) are fixedly passed through the front and rear sides of the main body (101). A receiving pipe (303) is provided at both ends of the connecting pipe (302). The receiving pipe (303) is located on the side of the nozzle (204) close to the axis of the crankshaft seat hole (102). An exhaust pipe (304) is also provided through the cooling pipe (301). The exhaust pipe (304) is fixedly passed through the front and rear sides of the main body (101). The receiving pipe (303), connecting pipe (302), cooling pipe (301) and exhaust pipe (304) are connected in sequence.

2. The intermediate bearing housing according to claim 1, characterized in that: The air intake mechanism (205) includes an air intake manifold (205.1), one end of which is sealed. The air intake manifold (205.1) is detachably and fixedly connected to the main body (101). Two air intake branch pipes (205.2) are connected to the air intake manifold (205.1). The two air intake branch pipes (205.2) correspond one-to-one with two heat dissipation channels (202). The two air intake branch pipes (205.2) are respectively inserted into the ports of the two heat dissipation channels (202) at the same recess (201).

3. The intermediate bearing housing according to claim 2, characterized in that: The intake manifold (205.1) is provided with an upper support seat (205.3) and a lower support seat (205.4). The upper support seat (205.3) and the lower support seat (205.4) are locked together by a first screw (205.5). The upper support seat (205.3) and the lower support seat (205.4) together form an air pipe installation channel. The intake manifold (205.1) passes through the air pipe installation channel. The lower support seat (205.4) is locked to the main body (101) by a second screw (205.6).

4. An intermediate bearing housing according to any one of claims 1-3, characterized in that: The main body (101) includes an upper seat (101.1) and a lower seat (101.2), which are arranged vertically and horizontally. The axis of the crankshaft seat hole (102) is located in the plane of the mating surfaces of the upper seat (101.1) and the lower seat (101.2). The upper seat (101.1) and the lower seat (101.2) are locked together by two bolts (101.3) arranged symmetrically on the left and right. A hollow positioning pin (101.4) is coaxially sleeved on the bolt (101.3). One end of the positioning pin (101.4) is inserted into the bottom of the upper seat (101.1), and the other end of the positioning pin (101.4) is inserted into the top of the lower seat (101.2).

5. The intermediate bearing housing according to claim 4, characterized in that: The cooling pipe (301) is composed of two cooling branch pipes (301.1) arranged symmetrically at the top and bottom.

6. The intermediate bearing housing according to claim 5, characterized in that: The splicing surfaces of the two cooling branch pipes (301.1) are on the same plane as the mating surfaces of the upper seat (101.1) and the lower seat (101.2).

7. The intermediate bearing housing according to claim 4, characterized in that: The recess (201) and exhaust pipe (304) are both located on the upper seat (101.1), and the nozzle (204), receiving pipe (303) and connecting pipe (302) are all located on the lower seat (101.2).

8. The intermediate bearing housing according to claim 1, characterized in that: The main body (101) is provided with reinforcing ribs (108).

9. An intermediate bearing housing according to claim 1, characterized in that: The main body (101) is provided with a weight reduction notch (106).

10. An intermediate bearing housing according to claim 1, characterized in that: A bearing groove (105) is provided on the inner wall of the crankshaft seat hole (102).

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