Crank assembly oil duct detection device

Abstract

The invention provides a crank assembly oil duct detection device, and relates to the technical field of machinery, and the crank assembly oil duct detection device comprises a bottom plate, the top of the bottom plate is fixedly provided with a detection pedestal, the surface of the detection pedestal is provided with a pressure gauge, the surface of the detection pedestal is communicated with an air pipe, and one side of the air pipe extends to the outside of the detection pedestal 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 present invention relates to the field of mechanical technology, and in particular to a crank assembly oil passage detection device. Background Art

[0002] Since the crankshaft assembly is the most important part of the engine and is responsible for power transmission, friction will inevitably occur. Excessive friction can easily damage components, so 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, while providing power output, friction, a large amount of heat energy and some small iron filings will be generated, so lubricating oil needs to be added to each engine to solve the negative effects of friction. Therefore, the crankshaft assembly needs to have a channel for lubricating oil to pass through, and the lubricating oil is transported to the place where friction is generated. However, how to ensure that this channel can be used requires the use of a detection device, and thus this detection device is born. Summary of the invention

[0004] The main purpose of the present invention is to provide a crank assembly oil passage detection device, which can effectively solve the problems raised in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A crank assembly oil passage detection device comprises a base plate, a detection base is fixedly mounted on the top of the base plate, a pressure gauge is arranged on the surface of the detection base, an air pipe is connected to the surface of the detection base, one side of the air pipe extends to the outside of the detection base and is connected to 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 sealed with the inside of the detection base, a downward pressing mechanism is arranged on the front and back sides of the detection base surface, an air pressure protection mechanism is arranged on the top of the base 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 connected to 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 matched.

[0008] Preferably, the pressing mechanism includes a fixed hinge, which is fixedly mounted on the surface of the detection base, and the surface of the fixed hinge is rotatably connected to a cylinder, a lifting plate is provided inside the cylinder, the top of the lifting plate extends to the top of the cylinder and is fixedly mounted with a cross bar, two convex rods are fixedly mounted on one side of the cross bar, a connecting plate is fixedly mounted between the two convex rods, an extrusion plate is provided below the lifting plate, the top bearing of the extrusion plate is connected to a screw, the top of the screw passes through the connecting plate and is threadedly connected to the connecting plate.

[0009] Preferably, anti-deflection rods are fixedly mounted on both sides of the bottom of the cross bar, the bottom of the anti-deflection rods extends to the inside of the cylinder, and the anti-deflection rods are respectively clamped on both sides of the inside of the cylinder.

[0010] Preferably, a positioning hole is formed at the top of the protruding rod, positioning rods are fixedly mounted on both sides of the top of the extrusion plate, and the tops of the positioning rods pass through the positioning holes.

[0011] Preferably, evenly distributed protective pads are provided at the bottom of the extrusion plate.

[0012] Preferably, a stopper is fixedly installed on the top of the fixed hinge, and the stopper is clamped on one side of the cylinder. A threaded groove is provided on the side of the stopper close to the cylinder, and evenly distributed clamping holes are provided inside the lifting plate. A clamping bolt is provided on one side of the cylinder, and one side of the clamping bolt passes through the clamping hole and extends to the inside of the threaded groove. The clamping bolt is threadedly connected to the threaded groove, and a circular plate is fixedly installed on the surface of the clamping bolt, and the circular plate is clamped on one side of the cylinder.

[0013] Preferably, the air pressure protection mechanism includes an air box, which is fixedly installed on the top of the base plate, and the surface of the air box close to the detection base is connected to a connecting pipe, and the connecting pipe is connected to the interior of the detection base. The interior of the air box is sealed and connected to a movable plate, and a spring is fixedly installed on the top of the movable plate, and the top of the spring is fixedly connected to the top of the inner cavity of the air box. A pressure relief hole is opened on the surface of the air box, and the pressure relief hole is located above the movable plate.

[0014] Preferably, the inner wall of the air box is fixedly installed with evenly distributed limit blocks, the limit blocks are located at the bottom of the movable plate, the limit blocks are located above the connecting pipe, a limit hole is opened on the top of the air box, a positioning column is fixedly installed on the top of the movable plate, and the top of the positioning column passes through the limit hole and extends to the top of the air box.

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

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] A bottom plate is provided to provide support for the detection base to improve the stability of the detection base. A pressure regulating valve is provided to adjust the compressed air to prevent excessive pressure. A detection base is provided to detect the crankshaft assembly to detect whether the oil passages and leakage points are blocked to ensure the delivery of lubricating oil. A downward pressure mechanism is provided to apply a downward pressure force to the top of the crankshaft assembly to improve the stability of the crankshaft assembly when detecting the top of the detection base, avoid shaking and lifting of the crankshaft assembly during detection, and further improve the accuracy of crankshaft assembly detection. An air pressure protection mechanism is provided to prevent the air pressure inside the detection base from being too high, which may affect the detection accuracy of the crankshaft assembly. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0022] Figure 5 For the present invention Figure 3 A partial enlarged view of the middle A;

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

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

[0025] Figure 8 It is a three-dimensional schematic diagram of the air pressure protection mechanism structure 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. pressing mechanism; 701. fixed hinge; 702. cylinder; 703. anti-deflection rod; 704. lifting plate; 705. cross bar; 706. convex rod; 707. connecting plate; 708. screw; 709. extrusion plate; 710. protective pad; 711. stopper; 712. threaded groove; 713. clamping hole; 714. clamping bolt; 715. round plate; 8. air pressure protection mechanism; 801. air box; 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 channel; 11. leakage point. DETAILED DESCRIPTION

[0027] The following will be combined with 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 part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] like Figure 1 As shown in FIG. 5 , a crank assembly oil passage detection device comprises a base plate 1, a detection base 2 is fixedly mounted on the top of the base plate 1, a pressure gauge 3 is arranged on the surface of the detection base 2, an air pipe 9 is connected to 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 connected to an air 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 sealed with the inside of the detection base 2, a pressing mechanism 7 is arranged on the front and back sides of the surface of the detection base 2, an air pressure protection mechanism 8 is arranged on the top of the base 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, and one side of the leakage point 11 is connected to the oil passage 10.

[0029] like Figure 3 As shown, the surface of the crankshaft assembly 6 located inside the detection base 2 is sleeved with an O-ring 5, and the inner wall of the detection base 2 is provided with a sealing groove, and the O-ring 5 is located inside the sealing groove, and the sizes of the O-ring 5 and the sealing groove are matched.

[0030] The effect achieved by the above components is: by setting the O-ring 5 and the sealing groove to cooperate with each other to ensure the sealing between the crankshaft assembly 6 and the detection base 2, gas leakage is prevented when the crankshaft assembly 6 is detected inside the detection base 2, thereby improving the detection accuracy of the crankshaft assembly 6.

[0031] like Figure 6 As shown in FIG. 7 , the pressing mechanism 7 includes a fixed hinge 701, which is fixedly mounted on the surface of the detection base 2. The surface of the fixed hinge 701 is rotatably connected to a cylinder 702. A lifting plate 704 is arranged inside the cylinder 702. The top of the lifting plate 704 extends to the top of the cylinder 702 and is fixedly mounted with a cross bar 705. Two protruding rods 706 are fixedly mounted on one side of the cross bar 705. A connecting plate 707 is fixedly mounted between the two protruding rods 706. An extrusion plate 709 is arranged below the lifting plate 704. A screw 708 is connected to the top bearing of the extrusion plate 709. The top of the screw 708 passes through the connecting plate 707 and is threadedly connected to the connecting plate 707.

[0032] The effect achieved by the above components is: when the crankshaft assembly 6 is installed on the top of the detection base 2 and is ready for detection, the cylinder 702 is rotated so that the cylinder 702 is in a vertical direction and the cylinder 702 is fixed, and the use height of the cross bar 705 is adjusted according to the height of the crankshaft assembly 6. At this time, the extrusion plate 709 is located above the crankshaft assembly 6, and the screw 708 is rotated. With the cooperation of the connecting plate 707, the screw 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 the crankshaft assembly 6, thereby improving the use stability of the crankshaft assembly 6, avoiding the crankshaft assembly 6 from shaking or pushing up during detection, and further improving the detection accuracy of the crankshaft assembly 6.

[0033] like Figure 6 As shown, anti-deflection rods 703 are fixedly installed on both sides of the bottom of the cross bar 705, and the bottom of the anti-deflection rod 703 extends to the inside of the cylinder 702, and the anti-deflection rods 703 are respectively clamped on both sides of the inside of the cylinder 702.

[0034] The effects achieved by the above components are: by setting the anti-deflection rod 703 to limit the movement of the lifting plate 704, the stability of the lifting plate 704 when adjusting the height up and down is improved, and the lifting plate 704 is prevented from deflecting on the inner side of the cylinder 702.

[0035] like Figure 6 As shown, a positioning hole is formed at the top of the protruding rod 706, positioning rods are fixedly mounted on both sides of the top of the extrusion plate 709, and the tops of the positioning rods pass through the positioning holes.

[0036] The effect achieved by the above components is: by setting the positioning rod and the positioning hole to cooperate with each other to limit the extrusion plate 709, the stability of the extrusion plate 709 when moving up and down is improved, and the downward pressing stability of the extrusion plate 709 on the crankshaft assembly 6 is further improved.

[0037] like Figure 6 As shown, the bottom of the extrusion plate 709 is provided with evenly distributed protection pads 710 .

[0038] The effects achieved by the above components are: by providing the protective pad 710 to reduce the hard contact between the extrusion plate 709 and the top of the crankshaft assembly 6, the top of the crankshaft assembly 6 is protected.

[0039] like Figure 7As shown, a stopper 711 is fixedly installed on the top of the fixed hinge 701, and the stopper 711 is clamped on one side of the cylinder 702. A threaded groove 712 is provided on the side of the stopper 711 close to the cylinder 702. Evenly distributed clamping holes 713 are provided inside the lifting plate 704. A clamping bolt 714 is provided on one side of the cylinder 702. One side of the clamping bolt 714 passes through the clamping hole 713 and extends to the inside of 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, and the circular plate 715 is clamped on one side of the cylinder 702.

[0040] The effect achieved by the above-mentioned components is: by setting a stop block 711 for limiting the cylinder 702, the cylinder 702 is rotated to a vertical direction, thereby improving the limiting performance of the cylinder 702. When the cylinder 702 is rotated to a vertical direction, the cylinder 702 needs to be limited and fixed, and one side of the clamping bolt 714 is passed through the clamping hole 713 and rotated to the inside of the threaded groove 712, so that the circular plate 715 squeezes one side of the cylinder 702, thereby fixing the cylinder 702 and improving the stability of use. The clamping bolt 714 passes through the clamping holes 713 at different heights to adjust the use height of the cross bar 705, thereby facilitating the extrusion plate 709 to squeeze and limit different types of crankshaft assemblies 6.

[0041] like Figure 8 As shown, the air pressure protection mechanism 8 includes an air box 801, which is fixedly installed on the top of the base plate 1. The surface of the air box 801 close to the detection base 2 is connected with a connecting pipe 802, and the connecting pipe 802 is connected with the interior of the detection base 2. The interior of the air box 801 is sealed and connected with a movable plate 803. A spring 806 is fixedly installed on the top of the movable 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 opened on the surface of the air box 801, and the pressure relief hole 808 is located above the movable plate 803.

[0042] The effect achieved by the above components is: by setting the spring 806 to apply a downward elastic force to the movable 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, and under the action of the air pressure, the gas inside the air box 801 will push the movable plate 803 upward and make the movable plate 803 move up. At this time, the spring 806 is in a compressed state. When the air pressure inside the air box 801 is too high, the movable 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 is reduced, the movable 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 the air pressure inside the detection base 2 being too high, thereby playing the role of double air pressure protection.

[0043] like Figure 8 As 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 movable plate 803, the limit blocks 805 are located above the connecting pipe 802, a limit hole is opened on the top of the air box 801, and a positioning column 807 is fixedly installed on the top of the movable plate 803, and the top of the positioning column 807 passes through the limit hole and extends to the top of the air box 801.

[0044] The effects achieved by the above components are: by setting the limit block 805 to limit the movable plate 803, the movable plate 803 is prevented from moving below the connecting pipe 802, thereby ensuring the sealing inside the air box 801; the positioning column 807 and the limit hole cooperate with each other to position the movable plate 803, thereby improving the stability of the movable plate 803 when it moves up and down inside the air box 801.

[0045] like Figure 8 As shown, a sealing ring 804 is sleeved on the surface of the movable 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: by providing the sealing ring 804 to increase the sealing between the moving plate 803 and the inner wall of the air box 801, the sealing inside the air box 801 is improved.

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

[0048] Put the assembled crankshaft assembly 6 into the test base 2, seal it with the O-ring 5, turn on the air source, adjust the pressure through the pressure regulating valve 4, and the value of the pressure gauge 3 rises. At this time, turn off the air source and observe whether the value of the pressure gauge 3 drops and whether the speed of dropping to zero is within the specified range. If it is within the specified range, it is qualified. If there is no change, or the speed of dropping is too slow, the leakage point 11 inside the 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 and damaged. In addition, under working conditions, the lubricating oil cannot provide lubrication for the friction parts, which is easy to cause damage to the engine.

[0049] When the crankshaft assembly 6 is installed on the top of the detection base 2 and is ready for detection, the cylinder 702 is rotated so that the cylinder 702 is in a vertical direction and the cylinder 702 is fixed. The use height of the cross bar 705 is adjusted according to the height of the crankshaft assembly 6. At this time, the extrusion plate 709 is located above the crankshaft assembly 6. The screw 708 is rotated. With the cooperation of the connecting plate 707, the screw 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 the crankshaft assembly 6 downward, thereby improving the use stability of the crankshaft assembly 6, avoiding the crankshaft assembly 6 from shaking or pushing up during detection, and further improving the detection accuracy of the crankshaft assembly 6.

[0050] When gas is filled into the detection base 2, 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 movable plate 803 upward and make the movable plate 803 move up. At this time, the spring 806 is in a compressed state. When the air pressure inside the air box 801 is too high, the movable 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 is reduced, the movable plate 803 will move down under the elastic force of the spring 806 and be located at the bottom of the pressure relief hole 808, thereby avoiding the air pressure inside the detection base 2 from being too high and playing the role of double air pressure protection.

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A crank assembly oil passage detection device, comprising a base plate (1), characterized in that: A detection base (2) is fixedly mounted on the top of the base plate (1); a pressure gauge (3) is arranged on the surface of the detection base (2); an air pipe (9) is connected to 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 connected to an air 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 sealed to the inside of the detection base (2); a pressing mechanism (7) is arranged on the front and back of the surface of the detection base (2); a gas pressure protection mechanism (8) is arranged on the top of the base plate (1) and on the left side of the detection base (2); an oil passage (10) is provided at the bottom of the crankshaft assembly (6); a leakage point (11) is provided inside the crankshaft assembly (6); one side of the leakage point (11) is connected to the oil passage (10).

2. A crank assembly oil passage detection device 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 provided on the inner wall of the detection base (2); the O-ring (5) is located inside the sealing groove; and the sizes of the O-ring (5) and the sealing groove are matched.

3. The crank assembly oil passage detection device according to claim 1, characterized in that: The pressing mechanism (7) comprises a fixed hinge (701), wherein the fixed hinge (701) is fixedly mounted on the surface of the detection base (2), the surface of the fixed hinge (701) is rotatably connected to a cylinder (702), a lifting plate (704) is arranged inside the cylinder (702), the top of the lifting plate (704) extends to the top of the cylinder (702) and is fixedly mounted with a cross bar (705), two protruding rods (706) are fixedly mounted on one side of the cross bar (705), a connecting plate (707) is fixedly mounted between the two protruding rods (706), an extrusion plate (709) is arranged below the lifting plate (704), a top bearing of the extrusion plate (709) is connected to a screw rod (708), and the top of the screw rod (708) passes through the connecting plate (707) and is threadedly connected to the connecting plate (707).

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

5. The crank assembly oil passage detection device according to claim 3, characterized in that: A positioning hole is provided at the top of the protruding rod (706), and positioning rods are fixedly mounted on both sides of the top of the extrusion plate (709), and the tops of the positioning rods pass through the positioning holes.

6. The crank assembly oil passage detection device according to claim 3, characterized in that: The bottom of the extrusion plate (709) is provided with evenly distributed protection pads (710).

7. The crank assembly oil passage detection device according to claim 3, characterized in that: A stopper (711) is fixedly installed on the top of the fixed hinge (701), and the stopper (711) is clamped on one side of the cylinder (702). A threaded groove (712) is provided on the side of the stopper (711) close to the cylinder (702). Evenly distributed clamping holes (713) are provided inside the lifting plate (704). A clamping bolt (714) is provided on one side of the cylinder (702), and one side of the clamping bolt (714) passes through the clamping hole (713) and extends to the inside of the threaded groove (712). The clamping bolt (714) is threadedly connected to the threaded groove (712), and a circular plate (715) is fixedly installed on the surface of the clamping bolt (714), and the circular plate (715) is clamped on one side of the cylinder (702).

8. The crank assembly oil passage detection device according to claim 1, characterized in that: The air pressure protection mechanism (8) comprises an air box (801), the air box (801) is fixedly mounted on the top of the base plate (1), a connecting pipe (802) is connected to the surface of the air box (801) close to the detection base (2), the connecting pipe (802) is connected to the inside of the detection base (2), the inside of the air box (801) is sealedly connected to a movable plate (803), a spring (806) is fixedly mounted on the top of the movable plate (803), the top of the spring (806) is fixedly connected to the top of the inner cavity of the air box (801), and a pressure relief hole (808) is opened on the surface of the air box (801), and the pressure relief hole (808) is located above the movable plate (803).

9. A crank assembly oil passage detection device according to claim 8, characterized in that: The inner wall of the air box (801) is fixedly mounted with uniformly distributed limit blocks (805), the limit blocks (805) are located at the bottom of the movable plate (803), the limit blocks (805) are located above the connecting pipe (802), a limit hole is provided at the top of the air box (801), a positioning column (807) is fixedly mounted at the top of the movable plate (803), and the top of the positioning column (807) passes through the limit hole and extends to the top of the air box (801).

10. The crank assembly oil passage detection device according to claim 8, characterized in that: A sealing ring (804) is sleeved on the surface of the movable plate (803), and the sealing ring (804) is in sealing contact with the inner wall of the air box (801).

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