Crank assembly oil duct detection device

Abstract

The utility model provides a crank assembly oil duct detection device, which relates to the technical field of machinery and comprises a bottom plate, a detection base is fixedly mounted at the top of the bottom plate, a pressure gauge is arranged on the surface of the detection base, an air pipe is communicated with the surface of the detection base, and one side of the air pipe extends to the outside of the detection base and is communicated with an air source. A pressure regulating valve is arranged on the surface of the air pipe, a crankshaft assembly is arranged at the top of the detection base, the bottom of the crankshaft assembly is located in the detection base and is in sealed connection with the interior of the detection base, and downward pressing mechanisms are arranged on the front face and the back face of the surface of the detection base. The downward pressing mechanism is arranged to apply downward pressing force to the top of the crankshaft assembly, so that the stability of the crankshaft assembly during detection on the top of the detection base is improved, the crankshaft assembly is prevented from shaking and jacking up during detection, the detection accuracy of the crankshaft assembly is further improved, and the detection efficiency of the crankshaft assembly is improved. And the air pressure protection mechanism is arranged to prevent the air pressure in the detection base from being too large to influence the detection accuracy of the crankshaft assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, and more specifically, to an oil passage detection device for a crank assembly. Background Technique

[0002] Since the crankshaft assembly is the most important part of the engine and is responsible for power transmission, friction will inevitably occur. When there is too much friction, the components are easily damaged. Therefore, a channel is needed to transport lubricating oil to reduce the damage caused by friction.

[0003] The function of the crankshaft assembly is to convert the reciprocating motion of the piston into rotational motion and at the same time provide power output for the engine. However, when providing power output, friction, a large amount of heat energy and some fine iron filings will be generated. Therefore, lubricating oil needs to be added to each engine to solve the negative effects brought by friction. Therefore, the crankshaft assembly needs to have a channel for the lubricating oil to pass through to transport the lubricating oil to the place where friction occurs. However, how to ensure that this channel can be used requires the use of a detection device, and thus this detection device came into being. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide an oil passage detection device for a crank assembly, which can effectively solve the problems raised in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An oil passage detection device for a crank assembly, including a bottom plate, a detection base is fixedly installed on the top of the bottom plate, a pressure gauge is arranged on the surface of the detection base, an air pipe is communicated with the surface of the detection base, one side of the air pipe extends to the outside of the detection base and is communicated with an air source, a pressure regulating valve is arranged on the surface of the air pipe, a crankshaft assembly is arranged on the top of the detection base, the bottom of the crankshaft assembly is located inside the detection base and is hermetically connected with the inside of the detection base, pressing mechanisms are arranged on the front and back surfaces of the detection base, a pressure protection mechanism is arranged on the top of the bottom plate and on the left side of the detection base, an oil passage is opened at the bottom of the crankshaft assembly, a leakage point is opened inside the crankshaft assembly, and one side of the leakage point is communicated with the oil passage.

[0007] Preferably, an O-ring is sleeved on the surface of the crankshaft assembly located inside the detection base, a sealing groove is opened on the inner wall of the detection base, the O-ring is located inside the sealing groove, and the sizes of the O-ring and the sealing groove are adapted to each other.

[0008] Preferably, the pressing mechanism includes a fixed hinge fixedly installed on the surface of the detection base. A cylinder is rotatably connected to the surface of the fixed hinge. An elevating plate is arranged inside the cylinder. The top of the elevating plate extends above the cylinder and is fixedly installed with a cross bar. Two convex bars are fixedly installed on one side of the cross bar. A connecting plate is fixedly installed between the two convex bars. An extrusion plate is arranged below the elevating plate. A screw rod is rotatably connected to the top of the extrusion plate. The top of the screw rod penetrates through the connecting plate and is threadedly connected to the connecting plate.

[0009] Preferably, both sides of the bottom of the cross bar are fixedly installed with anti-deviation rods. The bottoms of the anti-deviation rods extend into the cylinder, and the anti-deviation rods are respectively clamped on both sides inside the cylinder.

[0010] Preferably, positioning holes are formed at the tops of the convex bars. Positioning rods are fixedly installed on both sides of the top of the extrusion plate, and the tops of the positioning rods penetrate through the positioning holes.

[0011] Preferably, a uniformly distributed protective pad is arranged at the bottom of the extrusion plate.

[0012] Preferably, a stop block is fixedly installed at the top of the fixed hinge. The stop block is clamped on one side of the cylinder. A threaded groove is formed on the side of the stop block close to the cylinder. Uniformly distributed clamping holes are formed inside the elevating plate. A clamping bolt is arranged on one side of the cylinder. One side of the clamping bolt penetrates through the clamping hole and extends into the threaded groove. The clamping bolt is threadedly connected to the threaded groove. A round plate is fixedly installed on the surface of the clamping bolt. The round plate is clamped on one side of the cylinder.

[0013] Preferably, the air pressure protection mechanism includes an air box fixedly installed on the top of the bottom plate. A connecting pipe is communicated with the surface of the air box close to the detection base. The connecting pipe is communicated with the inside of the detection base. A moving plate is hermetically connected inside the air box. A spring is fixedly installed on the top of the moving plate. The top of the spring is fixedly connected to the top of the inner cavity of the air box. A pressure relief hole is formed on the surface of the air box. The pressure relief hole is located above the moving plate.

[0014] Preferably, uniformly distributed limiting blocks are fixedly installed on the inner wall of the air box. The limiting blocks are located at the bottom of the moving plate and above the connecting pipe. A limiting hole is formed at the top of the air box. A positioning column is fixedly installed on the top of the moving plate. The top of the positioning column penetrates through the limiting hole and extends above the air box.

[0015] Preferably, a sealing ring is sleeved on the surface of the moving plate. The sealing ring is in sealing contact with the inner wall of the air box.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] By providing a bottom plate to support the detection base, the stability of the detection base during use is improved. By providing a pressure regulating valve to regulate the compressed air and prevent excessive pressure. By providing a detection base to detect the crankshaft assembly and check whether the oil passages and leakage points are blocked to ensure the delivery of lubricating oil. By providing a downward pressing mechanism to apply a downward force to the top of the crankshaft assembly, so as to improve the stability of the crankshaft assembly during detection on the top of the detection base, avoid shaking and upward pushing of the crankshaft assembly during detection, and further improve the accuracy of the crankshaft assembly during detection. By providing a pneumatic protection mechanism to prevent excessive air pressure inside the detection base from affecting the detection accuracy of the crankshaft assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional schematic diagram of the overall structure in the present invention;

[0019] Figure 2 is a three-dimensional schematic diagram of the structure of the detection base and the crankshaft assembly in the present invention;

[0020] Figure 3 is a cross-sectional schematic diagram of the detection base and the crankshaft assembly in the present invention;

[0021] Figure 4 is a cross-sectional schematic diagram of the crankshaft assembly in the present invention;

[0022] Figure 5 is in the present invention Figure 3 is a partial enlarged view of part A therein;

[0023] Figure 6 is a three-dimensional schematic diagram of the structure of the downward pressing mechanism in the present invention;

[0024] Figure 7 is a three-dimensional schematic diagram of the partial structure of the downward pressing mechanism in the present invention;

[0025] Figure 8 is a three-dimensional schematic diagram of the structure of the pneumatic protection mechanism in the present invention.

[0026] In the figure: 1, bottom plate; 2, detection base; 3, pressure gauge; 4, pressure regulating valve; 5, O-ring; 6, crankshaft assembly; 7, downward pressing mechanism; 701, fixed hinge; 702, cylinder body; 703, anti-deviation rod; 704, lifting plate; 705, cross bar; 706, convex rod; 707, connecting plate; 708, screw rod; 709, extrusion plate; 710, protective pad; 711, stop block; 712, thread groove; 713, clamping hole; 714, clamping bolt; 715, round plate; 8, air pressure protection mechanism; 801, air tank; 802, connecting pipe; 803, moving plate; 804, sealing ring; 805, limit block; 806, spring; 807, positioning column; 808, pressure relief hole; 9, air pipe; 10, oil passage; 11, leakage point. Detailed implementation mode

[0027] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0028] As Figure 1 As shown in Fig. -5, a crankshaft assembly oil passage detection device includes a bottom plate 1. A detection base 2 is fixedly installed on the top of the bottom plate 1. A pressure gauge 3 is arranged on the surface of the detection base 2. An air pipe 9 is communicated with the surface of the detection base 2. One side of the air pipe 9 extends to the outside of the detection base 2 and is communicated with a gas source. A pressure regulating valve 4 is arranged on the surface of the air pipe 9. A crankshaft assembly 6 is arranged on the top of the detection base 2. The bottom of the crankshaft assembly 6 is located inside the detection base 2 and is hermetically connected with the inside of the detection base 2. Downward pressing mechanisms 7 are arranged on the front and back surfaces of the detection base 2. An air pressure protection mechanism 8 is arranged on the top of the bottom plate 1 and on the left side of the detection base 2. An oil passage 10 is opened at the bottom of the crankshaft assembly 6. A leakage point 11 is opened inside the crankshaft assembly 6. One side of the leakage point 11 is communicated with the oil passage 10.

[0029] As Figure 3 As shown in the figure, an O-ring 5 is sleeved on the surface of the crankshaft assembly 6 located inside the detection base 2. A sealing groove is opened on the inner wall of the detection base 2. The O-ring 5 is located inside the sealing groove. The sizes of the O-ring 5 and the sealing groove are adapted to each other.

[0030] The effects achieved by the above components are as follows: By setting the O-ring 5 and the sealing groove to cooperate with each other for the sealing performance between the crankshaft assembly 6 and the detection base 2, it is prevented that gas leaks when the crankshaft assembly 6 is detected inside the detection base 2, thereby improving the detection accuracy of the crankshaft assembly 6.

[0031] As Figure 6As shown in FIGS. 7, the pressing mechanism 7 includes a fixed hinge 701 fixedly installed on the surface of the detection base 2. A cylinder 702 is rotatably connected to the surface of the fixed hinge 701. An elevating plate 704 is arranged inside the cylinder 702. The top of the elevating plate 704 extends above the cylinder 702 and is fixedly installed with a cross bar 705. Two convex bars 706 are fixedly installed on one side of the cross bar 705. A connecting plate 707 is fixedly installed between the two convex bars 706. An extrusion plate 709 is arranged below the elevating plate 704. The top of the extrusion plate 709 is connected to a screw rod 708 by a bearing. The top of the screw rod 708 penetrates the connecting plate 707 and is threadedly connected to the connecting plate 707.

[0032] The effects achieved by the above components are as follows: When the crankshaft assembly 6 is installed on the top of the detection base 2 and ready for detection, rotate the cylinder 702 to make the cylinder 702 in a vertical direction and fix the cylinder 702. Adjust the use height of the cross bar 705 according to the height of the crankshaft assembly 6. At this time, the extrusion plate 709 is located above the crankshaft assembly 6. Rotate the screw rod 708. With the cooperation of the connecting plate 707, the screw rod 708 drives the extrusion plate 709 to move downward, so that the extrusion plate 709 drives the protective pad 710 to contact the top of the crankshaft assembly 6 and press down on the crankshaft assembly 6, improving the use stability of the crankshaft assembly 6, avoiding shaking or upward movement of the crankshaft assembly 6 during detection, and further improving the detection accuracy of the crankshaft assembly 6.

[0033] As Figure 6 shown, anti-deviation rods 703 are fixedly installed on both sides of the bottom of the cross bar 705. The bottoms of the anti-deviation rods 703 extend into the cylinder 702, and the anti-deviation rods 703 are respectively clamped on both sides inside the cylinder 702.

[0034] The effects achieved by the above components are as follows: By providing the anti-deviation rods 703 to limit the movement of the elevating plate 704, the stability of the elevating plate 704 during up and down height adjustment is improved, and the deviation of the elevating plate 704 inside the cylinder 702 is avoided.

[0035] As Figure 6 shown, positioning holes are opened at the tops of the convex bars 706. Positioning rods are fixedly installed on both sides of the top of the extrusion plate 709, and the tops of the positioning rods penetrate the positioning holes.

[0036] The effects achieved by the above components are as follows: By providing the cooperation of the positioning rods and the positioning holes to limit the extrusion plate 709, the stability of the extrusion plate 709 during up and down movement is improved, and the pressing stability of the extrusion plate 709 on the crankshaft assembly 6 is further improved.

[0037] As Figure 6 shown, uniformly distributed protective pads 710 are arranged at the bottom of the extrusion plate 709.

[0038] The effects achieved by the above components are as follows: By providing the protective pad 710 to reduce the hard contact between the pressing plate 709 and the top of the crankshaft assembly 6, it plays a role in protecting the top of the crankshaft assembly 6.

[0039] As Figure 7 shown, a stop block 711 is fixedly installed at the top of the fixed hinge 701. The stop block 711 is clamped to one side of the cylinder body 702. A threaded groove 712 is formed on the side of the stop block 711 close to the cylinder body 702. A uniformly distributed clamping hole 713 is formed inside the lifting plate 704. A clamping bolt 714 is provided on one side of the cylinder body 702. One side of the clamping bolt 714 penetrates through the clamping hole 713 and extends into the threaded groove 712. The clamping bolt 714 is threadedly connected to the threaded groove 712. A circular plate 715 is fixedly installed on the surface of the clamping bolt 714. The circular plate 715 is clamped to one side of the cylinder body 702.

[0040] The effects achieved by the above components are as follows: By providing the stop block 711 to limit the cylinder body 702, the cylinder body 702 is rotated to the vertical direction, improving the use limit performance of the cylinder body 702. After the cylinder body 702 is rotated to the vertical direction, it is necessary to limit and fix the cylinder body 702. One side of the clamping bolt 714 penetrates through the clamping hole 713 and is rotated into the threaded groove 712, so that the circular plate 715 presses one side of the cylinder body 702, thereby fixing the cylinder body 702 and improving the use stability. And the clamping bolt 714 penetrates through the clamping holes 713 at different heights to adjust the use height of the cross bar 705, thereby facilitating the pressing and limiting of different types of crankshaft assemblies 6 by the pressing plate 709.

[0041] As Figure 8 shown, the air pressure protection mechanism 8 includes an air tank 801. The air tank 801 is fixedly installed on the top of the bottom plate 1. A connecting pipe 802 is communicated with the surface of the air tank 801 close to the detection base 2. The connecting pipe 802 is communicated with the inside of the detection base 2. A moving plate 803 is hermetically connected inside the air tank 801. A spring 806 is fixedly installed on the top of the moving plate 803. The top of the spring 806 is fixedly connected to the top of the inner cavity of the air tank 801. A pressure relief hole 808 is formed on the surface of the air tank 801. The pressure relief hole 808 is located above the moving plate 803.

[0042] The effects achieved by the above components are as follows: By setting the spring 806 to apply a downward elastic force to the moving plate 803, when the detection base 2 is filled with gas, the gas inside the detection base 2 will enter the inside of the air box 801 through the connecting pipe 802. Under the action of air pressure, the gas inside the air box 801 will push the moving plate 803 upward, causing the moving plate 803 to move upward. At this time, the spring 806 is in a compressed state. When the air pressure inside the air box 801 is too high, the moving plate 803 moves to the top of the pressure relief hole 808, and the gas will be discharged from the pressure relief hole 808, further reducing the air pressure inside the air box 801 and the detection base 2. When the air pressure decreases, the moving plate 803 will move downward under the elastic force of the spring 806 and be located at the bottom of the pressure relief hole 808, thereby preventing the air pressure inside the detection base 2 from being too high and playing a role in double air pressure protection.

[0043] As Figure 8 shown, the inner wall of the air box 801 is fixedly installed with evenly distributed limit blocks 805. The limit blocks 805 are located at the bottom of the moving plate 803 and above the connecting pipe 802. A limit hole is opened at the top of the air box 801. A positioning column 807 is fixedly installed at the top of the moving plate 803, and the top of the positioning column 807 penetrates the limit hole and extends above the air box 801.

[0044] The effects achieved by the above components are as follows: By setting the limit blocks 805 to limit the moving plate 803 and prevent the moving plate 803 from moving below the connecting pipe 802, the airtightness inside the air box 801 is ensured. The positioning column 807 and the limit hole cooperate with each other to position the moving plate 803, improving the stability of the moving plate 803 when moving up and down inside the air box 801.

[0045] As Figure 8 shown, a sealing ring 804 is sleeved on the surface of the moving plate 803, and the sealing ring 804 is in sealing contact with the inner wall of the air box 801.

[0046] The effects achieved by the above components are as follows: By setting the sealing ring 804 to increase the airtightness between the moving plate 803 and the inner wall of the air box 801, the airtightness inside the air box 801 is improved.

[0047] The working principle of this crank assembly oil passage detection device:

[0048] Place the assembled crankshaft assembly 6 on the test base 2, seal it with the O-ring 5, turn on the air source, and adjust the pressure through the pressure regulating valve 4. At this time, the value on the pressure gauge 3 rises. Then turn off the air source and observe whether the value on the pressure gauge 3 drops and whether the dropping speed to zero is within the specified range. If it is within the specified range, it is qualified. If there is no change or the dropping speed is too slow, the leakage point 11 inside this crankshaft assembly 6 is unqualified. Because if the leakage is too slow or there is no leakage, it will cause the oil pump to be blocked by pressure, resulting in damage to the oil pump. And under working conditions, the lubricating oil cannot provide lubrication for the friction parts, easily causing damage to the engine;

[0049] When the crankshaft assembly 6 is installed on the top of the test base 2 and ready for testing, rotate the cylinder body 702 to make the cylinder body 702 in a vertical direction and fix the cylinder body 702. Adjust the use height of the cross bar 705 according to the height of the crankshaft assembly 6. At this time, the pressing plate 709 is located above the crankshaft assembly 6. Rotate the screw 708. With the cooperation of the connecting plate 707, the screw 708 drives the pressing plate 709 to move downward, so that the pressing plate 709 drives the protective pad 710 to contact the top of the crankshaft assembly 6 and press down on the crankshaft assembly 6, improving the use stability of the crankshaft assembly 6 and avoiding shaking or upward pushing of the crankshaft assembly 6 during testing, further improving the testing accuracy of the crankshaft assembly 6;

[0050] When the test base 2 is filled with gas, the gas inside the test base 2 will enter the inside of the air box 801 through the connecting pipe 802. Under the action of the air pressure, the gas inside the air box 801 will push the moving plate 803 upward and make the moving plate 803 move upward. At this time, the spring 806 is in a compressed state. When the air pressure inside the air box 801 is too high, the moving plate 803 moves to the top of the pressure relief hole 808, and the gas will be discharged from the pressure relief hole 808, further reducing the air pressure inside the air box 801 and the test base 2. When the air pressure drops, the moving plate 803 will move downward under the elastic force of the spring 806 and be located at the bottom of the pressure relief hole 808, so as to avoid too high air pressure inside the test base 2 and play a role of double air pressure protection.

[0051] Obviously, the above-mentioned embodiments of the present invention are only examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or variations can be made on the basis of the above description. It is impossible to list all the implementation manners here. All obvious changes or variations derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. An oil passage detection device for a crank assembly, comprising a bottom plate (1), characterized in that: A detection base (2) is fixedly installed at the top of the bottom plate (1). A pressure gauge (3) is arranged on the surface of the detection base (2). An air pipe (9) is communicated with the surface of the detection base (2). One side of the air pipe (9) extends to the outside of the detection base (2) and is communicated with an air source. A pressure regulating valve (4) is arranged on the surface of the air pipe (9). A crankshaft assembly (6) is arranged at the top of the detection base (2). The bottom of the crankshaft assembly (6) is located inside the detection base (2) and is hermetically connected with the inside of the detection base (2). Pressing mechanisms (7) are arranged on the front and back surfaces of the detection base (2). A pneumatic protection mechanism (8) is arranged at the top of the bottom plate (1) and on the left side of the detection base (2). An oil passage (10) is opened at the bottom of the crankshaft assembly (6). A leakage point (11) is opened inside the crankshaft assembly (6). One side of the leakage point (11) is communicated with the oil passage (10).

2. The oil passage detection device for a crank assembly according to claim 1, characterized in that: An O-ring (5) is sleeved on the surface of the crankshaft assembly (6) located inside the detection base (2). A sealing groove is opened on the inner wall of the detection base (2). The O-ring (5) is located inside the sealing groove. The sizes of the O-ring (5) and the sealing groove are adapted to each other.

3. The oil passage detection device for a crank assembly according to claim 1, characterized in that: The pressing mechanism (7) includes a fixed hinge (701). The fixed hinge (701) is fixedly installed on the surface of the detection base (2). A cylinder body (702) is rotatably connected to the surface of the fixed hinge (701). A lifting plate (704) is arranged inside the cylinder body (702). The top of the lifting plate (704) extends above the cylinder body (702) and is fixedly installed with a cross bar (705). Two convex rods (706) are fixedly installed on one side of the cross bar (705). A connecting plate (707) is fixedly installed between the two convex rods (706). An extrusion plate (709) is arranged below the lifting plate (704). A screw rod (708) is connected to the top of the extrusion plate (709) through a bearing. The top of the screw rod (708) penetrates through the connecting plate (707) and is in threaded connection with the connecting plate (707).

4. A crank assembly oil passage detection device according to claim 3, characterized in that: Anti-deviation rods (703) are fixedly installed on both sides of the bottom of the cross bar (705). The bottom of the anti-deviation rods (703) extends into the cylinder body (702). The anti-deviation rods (703) are respectively clamped on both sides inside the cylinder body (702).

5. The oil passage detection device for a crank assembly according to claim 3, wherein: Positioning holes are opened at the tops of the convex rods (706). Positioning rods are fixedly installed on both sides of the top of the extrusion plate (709), and the tops of the positioning rods penetrate through the positioning holes.

6. The oil passage detection device for a crank assembly according to claim 3, characterized in that: A uniformly distributed protective pad (710) is arranged at the bottom of the extrusion plate (709).

7. The oil passage detection device for a crank assembly according to claim 3, wherein: A stop block (711) is fixedly installed at the top of the fixed hinge (701). The stop block (711) is clamped to one side of the cylinder body (702). A threaded groove (712) is formed on the side of the stop block (711) close to the cylinder body (702). A uniformly distributed clamping hole (713) is formed inside the lifting plate (704). A clamping bolt (714) is arranged on one side of the cylinder body (702). One side of the clamping bolt (714) penetrates through the clamping hole (713) and extends into the threaded groove (712). The clamping bolt (714) is in threaded connection with the threaded groove (712). A round plate (715) is fixedly installed on the surface of the clamping bolt (714). The round plate (715) is clamped to one side of the cylinder body (702).

8. The oil passage detection device for a crank assembly according to claim 1, characterized in that: The air pressure protection mechanism (8) includes an air box (801). The air box (801) is fixedly installed at the top of the bottom plate (1). A connecting pipe (802) is communicated with the surface of the air box (801) close to the detection base (2). The connecting pipe (802) is communicated with the inside of the detection base (2). A moving plate (803) is hermetically connected inside the air box (801). A spring (806) is fixedly installed at the top of the moving plate (803). The top of the spring (806) is fixedly connected to the top of the inner cavity of the air box (801). A pressure relief hole (808) is formed on the surface of the air box (801). The pressure relief hole (808) is located above the moving plate (803).

9. The oil passage detection device for a crank assembly according to claim 8, wherein: A uniformly distributed limiting block (805) is fixedly installed on the inner wall of the air box (801). The limiting block (805) is located at the bottom of the moving plate (803). The limiting block (8 10. A crank assembly oil passage detection device according to claim 8, characterized in that: ​

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