Efficient noise detection mechanism and method for electronic oil pump

Abstract

The invention relates to the technical field of electronic oil pumps, in particular to an efficient noise detection mechanism and method for an electronic oil pump, the efficient noise detection mechanism comprises a workbench, and a placement box is fixedly mounted at the top of the workbench. The left end of the oil pump body is aligned with the mounting disc, then the four sets of screws at the top of the mounting disc are sequentially rotated, the screws can drive and push the clamping blocks to slide in the mounting disc when rotating till the four sets of clamping blocks are fixed from an output shaft of the oil pump body, and therefore the oil pump body can be firmly fixed, and displacement during operation is prevented; if the position of the noise sensor needs to be preliminarily adjusted, the noise sensor can be slightly pushed, the noise sensor moves to drive the limiting block to slide in the limiting groove, and the limiting rod can restrain the sliding direction of the limiting block, so that the noise sensor is prevented from deviating and sliding; and the reset spring on the surface of the limiting rod is stretched or compressed along with the movement of the limiting block to form a pre-tightening force, so that the noise sensor can be reset conveniently.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic oil pumps, in particular to an efficient noise detection mechanism and method for electronic oil pumps. BACKGROUND

[0002] An electronic oil pump is an oil pump driven by electricity, mainly composed of a first motor, a controller, a noise sensor and a pump body. The controller and the noise sensor can adjust the output pressure and flow to adapt to different working conditions.

[0003] The existing noise detection device detects the overall noise after the first motor is assembled with the electronic oil pump. For electronic oil pump manufacturers, it is impossible to confirm the noise value of the electronic oil pump itself. With the increasing proportion of electric vehicles, more and more manufacturers produce electronic oil pumps, and electric vehicles themselves have high requirements for NVH. Electronic oil pump manufacturers need to know or detect the noise value of the electronic oil pump they produce and the noise value at different orders. Therefore, the efficient noise detection mechanism and method for electronic oil pumps are proposed to solve the above problems. SUMMARY

[0004] In view of the deficiencies of the prior art, the efficient noise detection mechanism and method for electronic oil pumps are provided, which can solve the problem that electronic oil pump manufacturers cannot confirm the noise value of the electronic oil pump they produce. With the increasing proportion of electric vehicles, more and more manufacturers produce electronic oil pumps, and electric vehicles themselves have high requirements for NVH. Electronic oil pump manufacturers need to know or detect the noise value of the electronic oil pump they produce and the noise value at different orders.

[0005] To achieve the above purpose, the present application provides the following technical scheme: an efficient noise detection mechanism for electronic oil pumps, comprising a workbench, a placing box fixedly installed on the top of the workbench, a detection box fixedly installed on the right side of the top of the workbench, a step-in box door provided on the right side of the detection box, the step-in box door being movably installed on the detection box through a hinge, a detection assembly provided on the top of the workbench, a noise sensor provided in the detection box, a driving assembly provided in the detection box, a display fixedly installed on the top of the placing box, the noise sensor being electrically connected to the display through a control terminal, an oil pipe communicated with the inside of the detection box, and the left end of the oil pipe penetrating into the left side of the detection box; The detection assembly comprises a first motor, the bottom of the first motor being fixedly installed on the bottom of the inner wall of the placing box, an output end of the first motor being fixedly installed with a rotating rod, the right end of the rotating rod penetrating into the inside of the detection box, and the inside of the detection box being provided with an oil pump body, the oil pump body being located on the right side of the rotating rod; The driving assembly comprises a rotating plate, the noise sensor is located on the front side and the rear side of the top of the placing plate, the bottom of the placing plate is fixedly installed with a rotating rod, and the bottom of the rotating rod and the bottom of the inner wall of the detection box are movably installed.

[0006] Preferably, the detection assembly further comprises a mounting disc, the left end of the mounting disc and the right end of the rotating rod are fixedly installed, four groups of clamping blocks are slidably installed in the interior of the mounting disc, screw rods are movably installed on the top of the clamping blocks, the top of the screw rods penetrates through the top of the mounting disc and is threadedly installed with the mounting disc.

[0007] Preferably, the driving assembly comprises two groups of winding frames, the bottom of the winding frame and the bottom of the inner wall of the detection box are fixedly installed, a winding roller is rotatably installed in the interior of the winding frame, a winding rope is fixedly installed on the inner side of the noise sensor, and the inner end of the winding rope is fixedly installed on the surface of the winding roller.

[0008] Preferably, the bottom of the rotating plate is provided with a second motor, a connecting frame is fixedly installed on the surface of the second motor, the top of the connecting frame and the bottom of the rotating plate are fixedly installed, a fixing rod is fixedly installed on the top of the second motor, four groups of movable grooves are formed in the interior of the fixing rod, wobble plates are rotatably installed in the interior of the movable grooves, every two groups of wobble plates are oppositely arranged, a worm is arranged on the top of the fixing rod, a wobble groove is formed in the bottom of the worm, the wobble plate and the wobble groove are insertedly connected, a worm wheel is fixedly installed on the surface of the winding roller, and the worm and the worm wheel are engaged.

[0009] Preferably, limit blocks are fixedly installed on the two sides of the bottom of the noise sensor, and a limit groove is formed in the top of the rotating plate.

[0010] Preferably, a limit rod is fixedly installed in the interior of the limit groove, and the limit rod and the limit block are slidably installed.

[0011] Preferably, a reset spring is sleeved on the surface of the limit rod, the inner end of the reset spring and the outer side of the inner wall of the limit groove are fixedly installed, and the outer end of the reset spring and the inner side of the limit block are fixedly installed.

[0012] Preferably, a first gear is fixedly installed on the surface of the rotating rod, a limit sleeve is arranged on the surface of the fixing rod, an insertion groove is formed in the interior of the limit sleeve, the insertion groove and the wobble plate are clampedly connected, a second gear is fixedly installed on the surface of the limit sleeve, and the first gear and the second gear are engaged.

[0013] Preferably, a limit spring is fixedly installed on the inner wall of the movable groove, and the outer end of the limit spring and the inner side of the wobble plate are fixedly installed.

[0014] The method for efficiently detecting the noise of an electronic oil pump comprises the following steps. S1: Open the right side of the detection box through the hinge, and place the oil pump body to be detected in the detection box. Ensure that the oil pump body is on the right side of the rotating rod, then pick up the oil pipe on the left side of the detection box, and connect one end of the oil pipe to the oil inlet of the oil pump body. This simulates the oil supply circulation environment of the oil pump body during actual operation, providing a real working condition basis for subsequent detection.

[0015] S2: Push the oil pump body to the left to align the left end of the oil pump body with the right side of the mounting disc in the detection assembly, then use a tool to rotate the four sets of screws on the top of the mounting disc. Because the screws are threaded with the mounting disc, rotating the screws will push the clamping blocks to slide radially in the mounting disc until the four clamping blocks tightly fit the output shaft of the oil pump body from different directions, firmly fixing the oil pump body to prevent displacement during subsequent operation and affecting detection accuracy. S3: Close the step-in door of the detection box to form a relatively closed space inside the detection box, which can effectively isolate external environmental noise and prevent interference with the noise sensor's collection of the oil pump body's noise. Then check the electrical connection state of the display on the top of the placement box and the noise sensor through the control terminal, and observe whether the display has normal signal feedback to ensure that noise data can be transmitted to the display in real time and accurately during the detection process. S4: First, start the first motor at the bottom of the inner wall of the placement box. The output end of the first motor drives the rotating rod to rotate, and the rotating rod drives the fixed oil pump body through the mounting disc on the right end to rotate synchronously, simulating the normal working state of the oil pump body. Then start the second motor at the bottom of the rotating plate. When the second motor drives the fixed rod to rotate forward, it will pull the noise sensor closer to or farther away from the oil pump body through the transmission structure to adjust the distance between them. When the second motor drives the fixed rod to rotate in reverse, it will drive the noise sensor to flip with the rotating plate, achieving comprehensive collection of noise at different positions around the oil pump body. S5: During the noise collection process, the noise sensor transmits the real-time noise data to the display through the control terminal. The staff can directly read the specific noise value on the display and compare it with the preset noise threshold value of the oil pump body. If the value is lower than or equal to the threshold value, it means that the noise of the oil pump body meets the requirements and is determined to be up to standard. If the value is higher than the threshold value, it is determined to be not up to standard.

[0016] S6: After the detection is completed, first, turn off the first motor and the second motor to stop the oil pump body from rotating and the noise sensor from moving. Then, rotate the screws on the top of the mounting disc in reverse to loosen the clamping blocks from the output shaft of the oil pump body, disconnect the oil pipe from the oil inlet of the oil pump body, and finally open the step-in door of the detection box to remove the detected oil pump body. At this time, the noise sensor will automatically return to the initial position under the action of the reset spring, preparing for the next detection.

[0017] Compared with the prior art, the present application provides a high-efficiency detection mechanism and method for electronic oil pump noise, which has the following beneficial effects: 1, the left end of the oil pump body is aligned with the mounting disc, and then the four groups of screw rods on the top of the mounting disc are rotated in turn. When the screw rods rotate, they will drive the push clamps to slide in the mounting disc until the four groups of clamps are fixed to the output shaft of the oil pump body, thereby firmly fixing the oil pump body and preventing displacement during operation. If preliminary adjustment of the position of the noise sensor is required at this time, the noise sensor can be gently pushed. The movement of the noise sensor drives the limit block to slide in the limit slot. The limit rod will constrain the sliding direction of the limit block to prevent the noise sensor from deviating. During the sliding process, the return springs on the surface of the limit rod will be stretched or compressed with the movement of the limit block, forming a pre-tightening force, thereby facilitating the resetting of the noise sensor.

[0018] 2, when it is necessary to flip the rotating plate, the second motor can be started at this time. The second motor drives the fixed rod on the top to rotate. The flap in the movable slot inside the fixed rod is pushed out by the elastic force of the limiting spring and is respectively clamped into the flap groove at the bottom of the worm. At this time, the fixed rod can drive the worm to rotate when it rotates in the positive direction. The rotation of the worm drives the rotation of the worm wheel. The rotation of the worm wheel drives the rotation of the winding roller. The rotation of the winding roller can wind the winding rope. When the winding rope is wound, the noise sensor can be pulled to move. When the fixed rod is reversed, the other two flaps will enter the slot at this time, thereby driving the limit sleeve to rotate. The rotation of the limit sleeve drives the second gear to rotate. The rotation of the second gear drives the first gear to rotate. The rotation of the first gear drives the rotating rod to rotate. The rotating rod drives the rotating plate to rotate. At this time, the rotating plate can drive the noise sensor to rotate, so that the noise sensor can detect the noise of the oil pump body left and right, thereby detecting the noise of different positions of different oil pump bodies. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The present application is a structural schematic diagram; Figure 2 The present application is a structural schematic diagram; Figure 3 The present application is a structural schematic diagram; Figure 4 The present application is a structural schematic diagram; Figure 5 The present application is an enlarged structural schematic diagram in A of the drawing; Figure 6 The present application is an enlarged structural schematic diagram in B of the drawing; Figure 7 The present application is an enlarged structural schematic diagram in C of the drawing; Figure 8 The present application is an enlarged structural schematic diagram in D of the drawing; Figure 9 The present application is an enlarged structural schematic diagram in E of the drawing.

[0020] In the figure: 1, workbench; 2, placing box; 3, detection box; 4, step-in box door; 5, detection assembly; 51, first motor; 52, rotating rod; 53, oil pump body; 54, mounting disc; 55, clamping block; 56, screw rod; 6, noise sensor; 7, driving assembly; 71, rotating plate; 72, rotating rod; 73, winding frame; 74, winding roller; 75, winding rope; 76, second motor; 77, connecting frame; 78, fixed rod; 79, movable slot; 710, hinged plate; 711, worm; 712, hinged slot; 713, worm wheel; 714, first gear; 715, limiting sleeve; 716, insertion slot; 717, second gear; 8, display; 9, oil pipe; 10, limiting block; 11, limiting slot; 12, limiting rod; 13, return spring; 14, limiting spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. Embodiment:

[0022] Please refer to Figure 1 - Figure 9 The noise efficient detection mechanism for the electronic oil pump in the embodiment comprises a workbench 1, a placing box 2 fixedly installed on the top of the workbench 1, a detection box 3 fixedly installed on the right side of the top of the workbench 1, a step-in box door 4 arranged on the right side of the detection box 3, the step-in box door 4 being movably installed on the detection box 3 through a hinge, a detection assembly 5 arranged on the top of the workbench 1, a noise sensor 6 arranged in the detection box 3, a driving assembly 7 arranged in the detection box 3, a display 8 fixedly installed on the top of the placing box 2, the noise sensor 6 being electrically connected to the display 8 through a control terminal, and an oil pipe 9 communicated with the inside of the detection box 3, the left end of the oil pipe 9 penetrating through the left side of the detection box 3; The detection assembly 5 comprises a first motor 51 fixedly installed on the bottom of the inner wall of the placing box 2, a rotating rod 52 fixedly installed on the output end of the first motor 51, the rotating rod 52 penetrating through the inside of the detection box 3 at the right end, and an oil pump body 53 arranged in the inside of the detection box 3 and located at the right side of the rotating rod 52; The driving assembly 7 comprises a rotating plate 71, the noise sensor 6 being arranged on the front side and the rear side of the top of the placing plate, a rotating rod 72 fixedly installed on the bottom of the placing plate, and the bottom of the rotating rod 72 being movably installed on the bottom of the inner wall of the detection box 3. In use, first, by the hinge rotating the detection box 3 right side of the step into the box door 4, the oil pump body 53 to be detected is placed stably in the detection box 3, and the oil pump body 53 is ensured to be located on the right side of the rotating rod 52, then the oil pipe 9 penetrating through the left side of the detection box 3 is communicated with the oil inlet of the oil pump body 53, and the oil supply circulation environment of the oil pump body 53 during actual work is simulated; Subsequently, the step into the box door 4 of the detection box 3 is closed to form a relatively closed detection space, so as to avoid the noise collection accuracy of the noise sensor 6 being interfered by the external environment noise, and finally the first motor 51 placed on the inner wall bottom of the placing box 2 is started, the output end of the first motor 51 drives the rotating rod 52 to rotate, the rotating rod 52 drives the oil pump body 53 to synchronously rotate through the mounting disc 54 on the right end, the working state of the oil pump body 53 is simulated, and the position of the rotating plate 71 can be adjusted through the rotating rod 72 in the detection box 3, so that the noise sensor 6 is preliminarily aligned with the oil pump body 53, at this time, the noise value received by the noise sensor 6 is transmitted to the display 8 through the control terminal, so that whether the oil pump body 53 at this time reaches the expectation can be known, so that whether the oil pump body 53 reaches the standard can be known. The model of the noise sensor 6 is AWA14421, which can accurately capture 0-130dB noise change, and can effectively distinguish the noise difference between normal oil pump and worn or poorly assembled oil pump.

[0023] The detection assembly 5 further comprises a mounting disc 54, the left end of the mounting disc 54 is fixedly installed with the right end of the rotating rod 52, four groups of clamping blocks 55 are slidably installed in the mounting disc 54, screw rods 56 are movably installed on the top of the clamping blocks 55, and the top of the screw rod 56 penetrates through the top of the mounting disc 54 and is threadedly installed with the mounting disc 54; The bottom of the noise sensor 6 is fixedly installed with limit blocks 10 on both sides, and the top of the rotating plate 71 is provided with limit grooves 11; The limit grooves 11 are fixedly installed with limit rods 12 inside, and the limit rods 12 are slidably installed with the limit blocks 10; The limit rods 12 are provided with return springs 13 on the surfaces, the inner end of the return spring 13 is fixedly installed with the outer side of the inner wall of the limit groove 11, and the outer end of the return spring 13 is fixedly installed with the inner side of the limit block 10.

[0024] In use, first align the left end of the oil pump body 53 with the mounting disc 54, then turn the four sets of screw rods 56 on the top of the mounting disc 54 in turn. When the screw rods 56 are turned, they will drive the push clamping blocks 55 to slide in the mounting disc 54. Until the four sets of clamping blocks 55 are fixed from the output shaft of the oil pump body 53, so that the oil pump body 53 can be firmly fixed, preventing displacement during operation. At this time, if you need to preliminarily adjust the position of the noise sensor 6, you can gently push the noise sensor 6. The movement of the noise sensor 6 drives the limiting block 10 to slide in the limiting groove 11. The limiting rod 12 will constrain the sliding direction of the limiting block 10 to avoid the noise sensor 6 from deviating. During the sliding process, the return springs 13 on the surface of the limiting rod 12 will be stretched or compressed with the movement of the limiting block 10, forming a pre-tightening force, so that the noise sensor 6 can be easily reset.

[0025] Please refer to Figure 1 - Figure 9 The driving assembly 7 includes two sets of winding frames 73, the bottom of the winding frame 73 and the bottom of the inner wall of the detection box 3 are fixedly installed, the inside of the winding frame 73 is rotatably installed with a winding roller 74, the inside of the noise sensor 6 is fixedly installed with a winding rope 75, and the inner end of the winding rope 75 is fixedly installed on the surface of the winding roller 74. The bottom of the rotating plate 71 is provided with a second motor 76, the surface of the second motor 76 is fixedly installed with a connecting frame 77, the top of the connecting frame 77 and the bottom of the rotating plate 71 are fixedly installed, the top of the second motor 76 is fixedly installed with a fixed rod 78, four sets of movable grooves 79 are formed in the inside of the fixed rod 78, the movable grooves 79 are rotatably installed with a warped plate 710, every two sets of warped plates 710 are oppositely arranged, the top of the fixed rod 78 is provided with a worm 711, the bottom of the worm 711 is provided with a warped groove 712, the warped plate 710 and the warped groove 712 are inserted, the surface of the winding roller 74 is fixedly installed with a worm wheel 713, and the worm 711 and the worm wheel 713 are engaged. The surface of the rotating rod 72 is fixedly installed with a first gear 714, the surface of the fixed rod 78 is provided with a limiting sleeve 715, the inside of the limiting sleeve 715 is provided with an insertion groove 716, the insertion groove 716 and the warped plate 710 are connected, the surface of the limiting sleeve 715 is fixedly installed with a second gear 717, and the first gear 714 and the second gear 717 are engaged. The inner wall of the movable groove 79 is fixedly installed with a limiting spring 14, and the outer end of the limiting spring 14 and the inside of the warped plate 710 are fixedly installed.

[0026] When the rotating plate 71 needs to be flipped, the second motor 76 is started to rotate the fixed rod 78 at the top, the flap 710 in the movable slot 79 inside the fixed rod 78 is pushed out under the elastic force of the limiting spring 14, and is clamped into the flap slot 712 at the bottom of the worm 711. When the fixed rod 78 rotates forward, the worm 711 can be rotated, the worm 711 rotates to drive the worm gear 713 to rotate, the worm gear 713 rotates to drive the winding roller 74 to rotate, the winding roller 74 rotates to wind the winding rope 75, and the winding rope 75 is wound to pull the noise sensor 6 to move. When the fixed rod 78 reverses, the other two groups of flaps 710 enter the insertion slot 716, thereby driving the limiting sleeve 715 to rotate, the limiting sleeve 715 rotates to drive the second gear 717 to rotate, the second gear 717 rotates to drive the first gear 714 to rotate, the first gear 714 rotates to drive the rotating rod 72 to rotate, and the rotating rod 72 rotates to drive the rotating plate 71 to rotate. At this time, the rotating plate 71 can drive the noise sensor 6 to rotate, so that the noise sensor 6 can detect the noise of the oil pump body 53 left and right, thereby detecting the noise of the oil pump body 53 at different positions.

[0027] The electronic oil pump noise efficient detection method comprises the following steps: S1: Open the step-in box door 4 on the right side of the detection box 3 through the hinge, and place the oil pump body 53 to be detected stably in the detection box 3, ensure that the oil pump body 53 is on the right side of the rotating rod 52, then take the oil pipe 9 penetrating through the left side of the detection box 3, and tightly communicate one end of the oil pipe 9 with the oil inlet of the oil pump body 53, so as to simulate the oil supply circulation environment of the oil pump body 53 during actual work, and provide a real working condition basis for subsequent detection.

[0028] S2: Push the oil pump body 53 to the left to align the left end of the oil pump body 53 with the right side of the mounting disc 54 in the detection assembly 5, then use a tool to rotate the four groups of screw rods 56 on the top of the mounting disc 54 in turn. Because the screw rods 56 are screwed with the mounting disc 54, rotating the screw rods 56 will push the clamping blocks 55 to slide in the radial direction in the mounting disc 54 until the four groups of clamping blocks 55 tightly fit the output shaft of the oil pump body 53 from different directions to firmly fix the oil pump body 53, avoiding displacement during subsequent operation to affect the detection accuracy. S3: Close the step-in box door 4 of the detection box 3 to form a relatively closed space inside the detection box 3, which can effectively isolate the noise in the external environment and prevent interference with the collection of the noise of the oil pump body 53 by the noise sensor 6. Then check the electrical connection state of the display 8 on the top of the placement box 2 and the noise sensor 6 through the control terminal, observe whether there is normal signal feedback on the display 8, and ensure that the noise data can be transmitted to the display 8 in real time and accurately during the detection process. S4: first start the first motor 51 placed at the bottom of the inner wall of the box 2, the output end of the first motor 51 drives the rotating rod 52 to rotate, the rotating rod 52 drives the fixed oil pump body 53 to rotate synchronously through the right end of the mounting disc 54, simulates the normal working state of the oil pump body 53, and then starts the second motor 76 at the bottom of the rotating plate 71. When the second motor 76 drives the fixed rod 78 to rotate forward, the noise sensor 6 will be pulled closer to or farther away from the oil pump body 53 through the transmission structure, adjusting the distance between them. When the second motor 76 drives the fixed rod 78 to rotate reversely, the noise sensor 6 will be flipped with the rotating plate 71, realizing the comprehensive collection of noise at different positions around the oil pump body 53. S5: During the collection of noise, the noise sensor 6 will transmit the real-time noise data to the display 8 through the control terminal. The staff can directly read the specific noise value on the display 8, compare the read value with the preset noise standard threshold value of the oil pump body 53, and if the value is lower than or equal to the threshold value, it means that the noise of the oil pump body 53 meets the requirements and is determined to be up to standard. If the value is higher than the threshold value, it is determined to be substandard.

[0029] S6: After the detection is completed, first close the first motor 51 and the second motor 76, so that the oil pump body 53 stops rotating and the noise sensor 6 stops moving. Then rotate the screw rod 56 at the top of the mounting disc 54 in the reverse direction to loosen the output shaft of the oil pump body 53 with the clamp block 55, disconnect the oil pipe 9 from the oil inlet of the oil pump body 53, and finally open the step-in door 4 of the detection box 3 to take out the detected oil pump body 53. At this time, the noise sensor 6 will automatically return to the initial position under the action of the reset spring 13, preparing for the next detection. The working principle of the above embodiment is as follows: In use, first, rotate the step-in door 4 on the right side of the detection box 3 through the hinge, place the oil pump body 53 to be detected stably inside the detection box 3, and ensure that the oil pump body 53 is located on the right side of the rotating rod 52. Then, connect one end of the oil pipe 9 penetrating through the left side of the detection box 3 with the oil inlet of the oil pump body 53 to build a simulated oil supply circulation environment for the actual work of the oil pump. Then align the left end of the oil pump body 53 with the right side of the mounting disc 54 in the detection assembly 5, and in turn rotate the four sets of screw rods 56 at the top of the mounting disc 54. When the screw rods 56 rotate, they will push the clamp blocks 55 to slide radially in the mounting disc 54 until the four clamp blocks 55 tightly fit the output shaft of the oil pump body 53, thereby firmly fixing the oil pump body 53 to avoid displacement during subsequent operation and affect the detection accuracy. Then close the step-in door 4 of the detection box 3 to form a relatively closed detection space to isolate the external environmental noise from interfering with the data collection of the noise sensor 6. Check the electrical connection state of the display 8 at the top of the placement box 2 and the noise sensor 6 through the control terminal to confirm that the data transmission channel is unobstructed and ensure that the noise data can be fed back to the display 8 in real time during the detection process. Subsequently, the first motor 51 is started, and the first motor 51 drives the rotating rod 52 to rotate, and the rotating rod 52 drives the oil pump body 53 to rotate synchronously through the mounting disc 54 at the right end, so as to simulate the normal working state of the oil pump; When it is necessary to adjust the distance between the noise sensor 6 and the oil pump body 53, the second motor 76 is started at this time, the second motor 76 drives the fixed rod 78 to rotate forward, the flap 710 in the movable slot 79 in the fixed rod 78 is clamped into the flap slot 712 at the bottom of the worm 711 under the elastic force of the limiting spring 14, so as to drive the worm 711 to rotate, the worm 711 drives the worm wheel 713 to rotate, the worm wheel 713 drives the winding roller 74 to rotate in the winding frame 73, the winding roller 74 rotates to wind the winding rope 75, the winding rope 75 is pulled to move inward, and in the process, the limiting block 10 at the bottom of the noise sensor 6 slides along the limiting slot 11 at the top of the rotating plate 71, the limiting rod 12 restricts the sliding direction, and the reset spring 13 provides a pre-tightening force, so that the noise sensor 6 can move forward and backward to detect the noise at different positions of the oil pump body 53; When it is necessary to detect the noise in the left-right direction of the oil pump body 53, the second motor 76 drives the fixed rod 78 to rotate reversely, and the other group of flaps 710 are clamped into the slot 716 of the limiting sleeve 715, so that the fixed rod 78 can drive the limiting sleeve 715 to rotate, at this time, the flap 710 in the movable slot 79 also rotates all the time and does not enter the flap slot 712, the limiting sleeve 715 drives the second gear 717 to rotate, the second gear 717 drives the first gear 714 to rotate, the first gear 714 drives the rotating rod 72 to rotate, and the rotating rod 72 drives the rotating plate 71 to rotate, at this time, the noise sensor 6 is flipped synchronously with the rotating plate 71, so as to realize the noise collection at different positions around the oil pump body 53; The noise sensor 6 collects the noise data of the oil pump body 53 in real time in the detection process, and transmits the data to the display 8 through the control terminal, and the staff reads the noise value through the display 8; compared with the preset noise standard threshold value, it is judged whether the noise of the current oil pump body 53 meets the requirements, if the value is lower than or equal to the threshold value, the oil pump body 53 meets the requirements, otherwise it does not meet the requirements.

[0030] The mounting mode, connection mode or setting mode disclosed in the embodiment are all common mechanical connection modes, as long as the beneficial effects can be achieved, and therefore the specific structure, composition and working principle will not be described in detail.

[0031] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A mechanism for efficient detection of noise in an electric oil pump, characterized by: The utility model provides a kind of noise detection device, including workbench (1), the top of the workbench (1) is fixedly installed with placing box (2), the right side of the top of the workbench (1) is fixedly installed with detection box (3), the right side of the detection box (3) is provided with step-in box door (4), the step-in box door (4) is movably installed with detection box (3) by hinge, the top of the workbench (1) is provided with detection assembly (5), the inside of the detection box (3) is provided with noise sensor (6), the inside of the detection box (3) is provided with drive assembly (7), the top of the placing box (2) is fixedly installed with display (8), the noise sensor (6) is electrically connected by control terminal and display (8), the inside of the detection box (3) is communicated with oil pipe (9), the left end of the oil pipe (9) penetrates to the left side of detection box (3); The detection assembly (5) includes a first motor (51), the bottom of the first motor (51) is fixedly installed on the bottom of the inner wall of the placing box (2), the output end of the first motor (51) is fixedly installed with a rotating rod (52), the right end of the rotating rod (52) penetrates into the inside of the detection box (3), the inside of the detection box (3) is provided with an oil pump body (53), the oil pump body (53) is located at the right side of the rotating rod (52); The drive assembly (7) includes a rotating plate (71), the noise sensor (6) is located on the front side and the back side of the top of the placing plate, the bottom of the placing plate is fixedly installed with a rotating rod (72), the bottom of the rotating rod (72) and the bottom of the inner wall of the detection box (3) are movably installed.

2. The mechanism for efficient detection of noise of an electric oil pump according to claim 1, characterized in that: The detection assembly (5) further includes a mounting disc (54), the left end of the mounting disc (54) and the right end of the rotating rod (52) are fixedly installed, four groups of clamping blocks (55) are slidably installed in the inside of the mounting disc (54), the top of the clamping block (55) is movably installed with a screw rod (56), the top of the screw rod (56) penetrates to the top of the mounting disc (54) and is threadedly installed with the mounting disc (54).

3. The mechanism for efficient detection of noise of an electric oil pump according to claim 1, characterized in that: The drive assembly (7) includes two groups of winding frames (73), the bottom of the winding frame (73) and the bottom of the inner wall of the detection box (3) are fixedly installed, the winding roller (74) is rotatably installed in the inside of the winding frame (73), the inner side of the noise sensor (6) is fixedly installed with winding rope (75), the inner end of the winding rope (75) is fixedly installed on the surface of the winding roller (74).

4. The mechanism for efficient detection of noise of an electric oil pump according to claim 3, characterized in that: The bottom of the rotating plate (71) is provided with a second motor (76), the surface of the second motor (76) is fixedly installed with a connecting frame (77), the top of the connecting frame (77) and the bottom of the rotating plate (71) are fixedly installed, the top of the second motor (76) is fixedly installed with a fixed rod (78), four groups of movable grooves (79) are arranged in the fixed rod (78), the inside of the movable groove (79) is rotatably installed with a warped plate (710), every two groups of the warped plate (710) are oppositely arranged, the top of the fixed rod (78) is provided with a worm (711), the bottom of the worm (711) is provided with a warped groove (712), the warped plate (710) and the warped groove (712) are inserted, the surface of the winding roller (74) is fixedly installed with a worm wheel (713), the worm (711) and the worm wheel (713) are engaged.

5. The mechanism for efficient detection of noise of an electric oil pump according to claim 1, characterized in that: The bottom of the noise sensor (6) is fixedly installed with a limiting block (10) on both sides, the top of the rotating plate (71) is provided with a limiting groove (11), and the limiting block (10) and the limiting groove (11) are slidably installed.

6. The mechanism for efficient detection of noise of an electric oil pump according to claim 5, characterized in that: The inside of the limiting groove (11) is fixedly installed with a limiting rod (12), and the limiting rod (12) and the limiting block (10) are slidably installed.

7. The mechanism for efficient detection of noise of an electric oil pump according to claim 6, characterized in that: The surface of the limiting rod (12) is sleeved with a return spring (13), the inner end of the return spring (13) and the outer side of the inner wall of the limiting groove (11) are fixedly installed, and the outer end of the return spring (13) and the inner side of the limiting block (10) are fixedly installed.

8. The mechanism for efficient detection of noise of an electric oil pump according to claim 4, characterized by: The surface of the rotating rod (72) is fixedly installed with a first gear (714), the surface of the fixed rod (78) is provided with a limiting sleeve (715), the inside of the limiting sleeve (715) is provided with a insertion slot (716), the insertion slot (716) and the warped plate (710) are clamped, the surface of the limiting sleeve (715) is fixedly installed with a second gear (717), and the first gear (714) and the second gear (717) are engaged.

9. The mechanism for efficient detection of noise of an electric oil pump according to claim 4, characterized in that: The inner wall of the movable groove (79) is fixedly installed with a limiting spring (14), and the outer end of the limiting spring (14) and the inner side of the warped plate (710) are fixedly installed.

10. The method for efficient detection of noise of an electric oil pump according to claim 9, employing the mechanism for efficient detection of noise of an electric oil pump according to any one of claims 1 to 9, characterized in that, The method comprises the following steps: S1: open the step-in door (4) on the right side of the detection box (3) through the hinge, stably put the oil pump body (53) to be detected into the detection box (3), ensure that the oil pump body (53) is on the right side of the rotating rod (52), then take the oil pipe (9) penetrating through the left side of the detection box (3), and tightly communicate one end of the oil pipe (9) with the oil inlet of the oil pump body (53), so as to simulate the oil supply circulation environment of the oil pump body (53) in actual work, and provide a real working condition basis for subsequent detection. S2: Push the oil pump body (53) to the left, align the left end of the oil pump body (53) with the right side of the mounting disc (54) in the detection assembly (5), then use tools to rotate the four sets of screw rods (56) on the top of the mounting disc (54) in turn, because the screw rods (56) are threaded with the mounting disc (54), when rotating, they will push the clamping blocks (55) to slide radially in the mounting disc (54), until the four sets of clamping blocks (55) tightly fit the output shaft of the oil pump body (53) from different directions, firmly fixing the oil pump body (53), avoiding displacement affecting the detection accuracy during subsequent operation; S3: Close the step-in door (4) of the detection box (3), so that the inside of the detection box (3) forms a relatively closed space, which can effectively isolate the noise in the external environment, prevent interference noise from affecting the collection of noise data by the noise sensor (6), and then check the electrical connection state of the display (8) and the noise sensor (6) on the top of the placement box (2) through the control terminal, observe whether there is normal signal feedback on the display (8), and ensure that the noise data can be transmitted to the display (8) in real time and accurately during the detection process; S4: First start the first motor (51) at the bottom of the inner wall of the placement box (2), the output end of the first motor (51) drives the rotating rod (52) to rotate, the rotating rod (52) drives the fixed oil pump body (53) to rotate synchronously through the mounting disc (54) at the right end, simulating the normal working state of the oil pump body (53), and then start the second motor (76) at the bottom of the rotating plate (71), when the second motor (76) drives the fixed rod (78) to rotate forward, it will pull the noise sensor (6) closer to or farther away from the oil pump body (53) through the transmission structure, adjusting the distance between them, and when the second motor (76) drives the fixed rod (78) to rotate in reverse, it will drive the noise sensor (6) to flip with the rotating plate (71), realizing the comprehensive collection of noise at different positions around the oil pump body (53); S5: During the noise collection process, the noise sensor (6) will transmit the real-time noise data to the display (8) through the control terminal, and the staff can directly read the specific noise value on the display (8), compare the read value with the preset noise standard threshold value of the oil pump body (53), if the value is lower than or equal to the threshold value, it means that the noise of the oil pump body (53) meets the requirements, and it is determined to be up to standard, if the value is higher than the threshold value, it is determined to be not up to standard; S6: After the detection is completed, first close the first motor (51) and the second motor (76), so that the oil pump body (53) stops rotating and the noise sensor (6) stops moving. Then rotate the screw rod (56) on the top of the mounting disc (54) in reverse, loosen the clamping block (55) from the output shaft of the oil pump body (53), disconnect the oil pipe (9) from the oil inlet of the oil pump body (53), and finally open the step-in door (4) of the detection box (3), take out the detected oil pump body (53), at this time the noise sensor (6) will automatically return to the initial position under the action of the reset spring (13), preparing for the next detection.

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