A test bench for a gear-type balance shaft dual-supply oil pump

Abstract

This invention relates to the field of oil pump test benches, specifically a gear-type balance shaft dual-supply oil pump test bench. It solves the problem of automatically placing oil pumps while ensuring stability during testing, achieving automated integrated testing. The bench includes a conveyor base, a fixed base, and a testing base, which are installed side-by-side in sequence. A conveyor belt is provided on the outer surface of the conveyor base. This invention, through the arrangement of the conveyor base, fixed base, and testing base, enables integrated automatic testing without manual intervention, avoiding errors caused by human factors, ensuring the accuracy and reliability of test results, and improving testing efficiency. It also allows for multiple testing. During testing, the device conveys multiple oil pumps via the conveyor base and performs testing via the fixed base and testing base, achieving uninterrupted testing, ensuring testing efficiency, and guaranteeing the accuracy of the test data.

Description

Technical Field

[0001] This invention relates to the field of oil pump test bench technology, specifically to a gear-type balance shaft dual-supply oil pump test bench. Background Technology

[0002] The gear-type balance shaft dual-supply oil pump is a key component in the lubrication system of an internal combustion engine. Its design purpose is to provide lubricating oil to different lubrication points through two independent oil pump structures.

[0003] With the continuous development of internal combustion engine technology, the oil pump, as a key component of the internal combustion engine lubrication system, has a crucial impact on the reliability and service life of the engine. Traditional oil pump testing methods typically require manual placement of the oil pump on a test bench for manual clamping and testing. This process is not only inefficient, but also prone to shaking during testing due to the instability of manual operation, thus affecting the accuracy and results of the test.

[0004] Traditional methods of testing oil pumps are mostly done manually, which cannot achieve automatic testing, thus limiting testing efficiency and accuracy. This not only increases the labor intensity of operators but also reduces testing efficiency.

[0005] Therefore, the present invention provides a gear-type balance shaft dual-supply oil pump test bench to solve the above problems. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the present invention provides a gear-type balance shaft dual-supply oil pump test bench to solve the problem of automatically placing the oil pump while ensuring stability during testing and realizing automated integrated testing.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A gear-type balance shaft dual-supply oil pump test bench includes a transmission base, a fixed base, and a testing base. The transmission base, fixed base, and testing base are installed side-by-side in sequence. A conveyor belt is provided on the outer surface of the transmission base, and the conveyor belt is also located above the fixed base and the testing base. A stepper motor is installed on the outer wall of the fixed base, and an output shaft is fixedly installed on the output end of the stepper motor. The output shaft is drivenly connected to the conveyor belt. A stabilizing frame is fixedly installed on the outer wall of the other end of the fixed base. An upper support frame is installed inside the fixed base, and the upper support frame matches the stabilizing frame. The upper support frame and the stabilizing frame match the conveyor belt. One end of the testing base is rotatably connected to a reciprocating lead screw, which is driven and connected to the stepper motor. A testing box is installed on the outer wall of the testing base, and the testing box matches the reciprocating lead screw. This device, through the arrangement of the conveyor base, fixed base, and testing base, can achieve integrated automatic testing without manual intervention, avoiding errors caused by human factors, ensuring the accuracy and reliability of the testing results, and improving testing efficiency. At the same time, it can achieve the effect of multiple testing. During testing, the device conveys multiple oil pumps through the conveyor base and performs testing through the fixed base and testing base, realizing the function of uninterrupted testing, ensuring testing efficiency, and ensuring the accuracy of testing data.

[0009] Preferably, one end of the output shaft is slidably connected to a limiting shaft, and a stop plate is fixedly installed on the outer wall of the limiting shaft. The stop plate matches the conveyor belt. One end of the limiting shaft is fixedly installed to a chuck, and a stop pin is slidably connected inside the chuck. One end of the stop pin is fixedly installed to a compression spring, and the other end of the compression spring is fixedly connected to the inner top wall of the chuck. A stop groove is formed inside the stop pin, and a stop inclined block is slidably connected inside the stop groove. The height of the stop inclined block decreases from the outside to the inside. A release shaft is fixedly installed at one end of the stop inclined block, and the other end of the release shaft passes through the inside of the stop plate and abuts against one end of the output shaft. A snap-fit ​​spring is installed at one end of the stop plate, and the other end of the snap-fit ​​spring is connected to one end of the output shaft. Friction grooves are formed on the outer wall of the limiting shaft. In use, the device drives the output shaft to rotate through a stepper motor, thereby rotating the oil pump. During testing, the chuck engages the rotating shaft of the oil pump, and the rotation of the output shaft drives the test. After the test, the shaft is restricted from moving inward, and the shaft is prevented from hitting the groove on the inner wall of the chuck, causing the groove to move inward and the chuck to disengage from the oil pump shaft. In operation, after the oil pump shaft enters the chuck, the chuck engages with the oil pump shaft under the action of compression springs, achieving a fixing function. This device, through the chuck design, allows the chuck to extend and engage the oil pump shaft when rotation testing is required. After testing, the chuck automatically retracts, which not only does not affect the entry of the oil pump for testing, facilitating subsequent testing, but also enables automatic disengagement and clamping of the oil pump shaft, achieving automated operation. Furthermore, the chuck of this device can adaptively clamp oil pump shafts of different diameters, enabling testing of oil pumps of various sizes and models.

[0010] Preferably, a number of fixing plates are installed on the outer wall of the conveyor belt. A partition is fixedly installed inside each fixing plate. An adapting plate is slidably connected to the inner side wall of each fixing plate. The top of one end of the adapting plate is set as an inclined surface. An adapting spring is fixedly installed on the outer wall of the other end of the adapting plate. The other end of the adapting spring is fixedly connected to the outer wall of the partition. A pushing inclined block is installed at one end of the fixing plate. The width of the pushing inclined block increases from the outside to the inside. The pushing inclined block matches the abutment plate. A toothed plate is installed at the other end of the fixing plate. This device has multiple fixing plates, with an oil pump placed between two spaced fixing plates and clamped and fixed by the adapting plate. The upper part of the adapting plate is set as an inclined surface to facilitate the placement and clamping of the oil pump. Furthermore, the adapting plate of this device can adaptively clamp oil pumps of different sizes, facilitating the testing of oil pumps of different sizes.

[0011] Preferably, the transmission base is rotatably connected to a drive shaft, which is fixedly connected to the output end of the stepper motor via a first drive belt; the reciprocating lead screw is fixedly connected to the output end of the stepper motor via a second drive belt.

[0012] Preferably, a transmission shaft is fixedly installed at the center of one end of the conveyor belt. A transmission gear is installed on the outer wall of the transmission shaft via a one-way bearing. The transmission gear meshes with a drive gear, which is fixedly installed on the outer wall of the drive shaft. A first spiral spring is fixedly installed on the outer wall of one end of the drive shaft, and the other end of the first spiral spring is fixedly connected to the inner wall of the conveyor seat. When the stepper motor starts, it drives the drive shaft to rotate via the first transmission belt. However, when the drive shaft drives the drive gear and transmission gear to rotate, the transmission gear is connected to the transmission shaft via a one-way bearing, so the rotation of the drive shaft does not drive the transmission shaft to rotate. At this time, the first spiral spring is compressed. Since the diameter of the drive shaft is larger than the output end of the stepper motor, the rotation of the stepper motor limits the reverse rotation of the drive shaft. When the stepper motor stops rotating, the drive shaft resets and reverses under the action of the first spiral spring. The rotation of the drive shaft then drives the transmission gear to rotate. The conveyor belt transports the oil pump to be tested. During this transport, the pump being tested will shift, causing a slight displacement of the compression adaptation plate. At this point, the pushing block at one end of the fixed plate will abut against the abutment plate. As the width of the abutment increases, the abutment plate will cause the limiting shaft to slide inside the output shaft. The disengaging shaft is then subjected to the abutment force, causing the chuck to disengage from the oil pump's rotating shaft. The clamping spring is compressed, achieving disengagement from the test. The rotating shaft of the oil pump to be tested will then be opposite the chuck. Under the action of the clamping spring, the limiting shaft will slowly return to its original position, facilitating re-clamping and fixation, thus achieving the testing function. This device, driven by the drive shaft, allows for staggered transport with the stepper motor. When the stepper motor starts, it is in the testing state, and the conveyor belt stops transporting. After the stepper motor stops, the testing is complete, and the conveyor belt resumes transporting, achieving a linked function. The staggered output avoids mutual interference and prevents simultaneous testing and transport. Furthermore, the conveyor belt is driven by a stepper motor, achieving energy savings.

[0013] Preferably, a side plate is fixedly installed on the side wall of the top of the conveyor seat, a bidirectional lead screw is rotatably connected to the inner wall of the side plate, and a drive gear is fixedly installed on the outer wall of the bidirectional lead screw, the drive gear matching the gear plate; a pressure box is installed at the bottom of the stabilizing frame, the pressure box is threaded to the outer wall of the top of the bidirectional lead screw, a pressure plate is slidably connected inside the pressure box, a pressure spring is fixedly installed on the top of the pressure plate, the top of the pressure spring is fixedly installed on the bottom of the slide plate, the slide plate is slidably connected to the inner top wall of the pressure box, a return spring is fixedly installed at one end of the slide plate, and the other end of the return spring is fixedly connected to the inner side wall of the pressure box.

[0014] Preferably, the upper top frame is located inside the conveyor belt, the bidirectional screw is rotatably connected inside the upper top frame, a threaded plate is slidably connected inside the upper top frame, the threaded plate is threadedly connected to the outer wall of the lower part of the bidirectional screw, the threads of the upper and lower parts of the bidirectional screw are opposite, a groove is formed inside the threaded plate, an upper top plate is slidably connected inside the groove, a top extension spring is fixedly installed at one end of the upper top plate, and the other end of the top extension spring is fixedly connected to the inner wall of the groove; a second spiral spring is fixedly installed at the bottom of the bidirectional screw, and the other end of the second spiral spring is fixedly connected to the inner bottom wall of the fixed seat; when the conveyor belt is conveying, the toothed plate on its outer wall will mesh with the drive gear, so that the toothed plate drives the bidirectional screw to rotate, and the displacement of the conveyor belt will not... This mechanism disengages the toothed plate from the drive gear, thus restricting the drive gear. The toothed plate will only disengage from the drive gear when the conveyor belt moves again, preventing the oil pump from being unable to be fixed due to the reverse rotation of the double-acting screw. When the toothed plate drives the drive gear to rotate, the double-acting screw will cause the lower pressure box to move downwards, and the upper top plate to move upwards. This causes the lower pressure plate to press against the upper part of the oil pump, and the upper top plate to abut against the bottom of the oil pump, achieving a fixing effect. When the conveyor belt is conveying, the fixing plate is compressed, and the lower pressure plate and the top plate can move briefly to ensure that the tested oil pump is conveyed. When conveying resumes, the toothed plate disengages from the drive gear, and the upper and lower top plates return to their original positions under the action of the second spiral spring, facilitating the fixing of the oil pump to be tested.

[0015] Preferably, a third spiral spring is fixedly installed on the outer wall of the reciprocating screw, and the third spiral spring is fixedly connected to the inner wall of the detection seat. A pusher is threadedly connected to the outer wall of the reciprocating screw. Two sealing plates are slidably connected inside the detection box. An oil inlet pipe and an oil outlet pipe are respectively installed on the outer walls of the two sealing plates. A compression spring is fixedly installed at the other end of each sealing plate, and the other end of the compression spring is fixedly connected to the inner side wall of the detection box. An opening and closing plate is slidably connected inside the detection box, located between the two sealing plates. A pusher is fixedly installed on the outer wall of the opening and closing plate. Equipped with an opening and closing spring, the other end of which is fixedly connected to the inner wall of the testing box; after the test is completed, the conveyor belt transports the tested oil pump, at which point the tested oil pump will be opposite one end of the push frame, and the push frame pushes the oil pump into the interior of the testing box. One end of the oil pump abuts against the opening and closing plate. When the opening and closing plate is pushed out, under the action of the compression spring, the sealing plate abuts against the oil pump. At this time, the oil inlet pipe and the oil outlet pipe seal with the oil outlet and oil inlet ends of the oil pump, realizing the detection of the oil pump's oil output and sealing, achieving the function of automated detection, and simultaneously forming a linkage function with the conveyor belt, etc.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This device, through the configuration of a conveyor, a fixed base, and a detection base, enables integrated automatic detection without manual intervention, avoiding errors caused by human factors, ensuring the accuracy and reliability of detection results, and improving detection efficiency. It also allows for multiple detections; during detection, the conveyor transports multiple oil pumps, while the fixed base and detection base perform the tests, achieving uninterrupted detection and ensuring both efficiency and accuracy of the detection data.

[0018] 2. This device, through the setting of the chuck, can extend the chuck to clamp the oil pump shaft when rotation testing is required. After the test is completed, the chuck can automatically retract, which on the one hand does not affect the entry of the oil pump to be tested, facilitating the test again, and on the other hand can realize the function of automatically disengaging and clamping the oil pump shaft, realizing automated operation. At the same time, the chuck of this device can adaptively clamp oil pump shafts of different diameters, realizing the testing of oil pumps of different sizes and models.

[0019] 3. This device has multiple fixing plates, with the oil pump placed between two spaced fixing plates and clamped and fixed by an adapting plate. The upper part of the adapting plate is set as an inclined surface to facilitate the placement and clamping of the oil pump. In addition, the adapting plate of this device can adaptively clamp oil pumps of different sizes, which is convenient for testing oil pumps of different sizes.

[0020] 4. Under the action of the drive shaft, this device can stagger the conveying with the stepper motor. When the stepper motor starts, it is in the detection state and the conveyor belt stops conveying. After the stepper motor stops, it is in the detection state and the conveyor belt conveys. This realizes the linkage function and staggered output, which can avoid mutual interference and avoid the phenomenon of detection and conveying at the same time. At the same time, the conveyor belt of this device is driven by the stepper motor, which can save energy.

[0021] 5. When the conveyor belt is conveying, the toothed plate on its outer wall will mesh with the drive gear, so that the toothed plate drives the double-acting screw to rotate. At the same time, the displacement of the conveyor belt will not cause the toothed plate to disengage from the drive gear. This restricts the drive gear. Only when the conveyor belt moves again will the toothed plate disengage from the drive gear. This can prevent the reverse rotation of the double-acting screw from causing the oil pump to fail to be fixed.

[0022] 6. After the test is completed, the conveyor belt transports the tested oil pump to the inside of the test chamber. At this time, the tested oil pump will be opposite one end of the push frame. The push frame pushes the oil pump into the test chamber. One end of the oil pump abuts against the opening and closing plate. When the opening and closing plate is pushed out, the sealing plate abuts against the oil pump under the action of the compression spring. At this time, the oil inlet pipe and oil outlet pipe seal with the oil outlet and oil inlet of the oil pump, realizing the detection of the oil output and sealing of the oil pump, realizing the function of automated detection, and the detection is linked with the conveyor belt, etc. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the present invention from the front view;

[0024] Figure 2 This is a three-dimensional schematic diagram of the output shaft and the limiting shaft of the present invention;

[0025] Figure 3 This is a schematic diagram showing a cross-section of the chuck of the present invention;

[0026] Figure 4 This is a schematic cross-sectional view of the fixing plate of the present invention;

[0027] Figure 5 This is a schematic cross-sectional view of the transmission base and the fixing base of the present invention;

[0028] Figure 6 This is a schematic cross-sectional view of the pressure tank of the present invention;

[0029] Figure 7 This is a schematic diagram of a cross-section of the top frame of the present invention;

[0030] Figure 8 This is a schematic diagram of the interior of the detection box of the present invention.

[0031] In the diagram: 1. Transmission seat; 101. Drive shaft; 102. First drive belt; 103. Second drive belt; 104. Drive gear; 105. First spiral spring;

[0032] 2. Fixture; 3. Detection fixture;

[0033] 4. Conveyor belt; 401. Fixed plate; 402. Partition plate; 403. Adaptive plate; 404. Adaptive spring; 405. Transmission shaft; 406. Transmission gear; 407. Pushing swashplate; 408. Tooth plate; 409. Side plate; 410. Double-acting lead screw; 411. Drive gear;

[0034] 5. Output shaft; 501. Limiting shaft; 502. Abutting plate; 503. Chuck; 504. Clamping post; 505. Compression spring; 506. Abutting groove; 507. Abutting ramp; 508. Disengagement shaft; 509. Snap-fit ​​spring;

[0035] 6. Stabilizing frame; 601. Lower pressure box; 602. Lower pressure plate; 603. Lower pressure spring; 604. Slide plate; 605. Return spring;

[0036] 7. Top frame; 701. Threaded plate; 702. Slide groove; 703. Top plate; 704. Top extension spring; 705. Second spiral spring;

[0037] 8. Reciprocating lead screw; 801. Push frame;

[0038] 9. Detection box; 901. Sealing plate; 902. Oil receiving pipe; 903. Oil outlet pipe; 904. Opening and closing plate; 905. Opening and closing spring; 906. Compression spring;

[0039] 10. Stepper motor. Detailed Implementation

[0040] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0041] A test bench for a gear-type balance shaft dual-supply oil pump, as shown in the attached document. Figure 1-2 As shown, the system includes a conveyor base 1, a fixed base 2, and a detection base 3, which are installed side by side in sequence. A conveyor belt 4 is mounted on the outer surface of the conveyor base 1, and is also located above the fixed base 2 and the detection base 3. A stepper motor 10 is mounted on the outer wall of the fixed base 2, and an output shaft 5 is fixedly mounted on the output end of the stepper motor 10. The output shaft 5 is driven by the conveyor belt 4. A stabilizing frame 6 is fixedly mounted on the outer wall of the other end of the fixed base 2, as shown in the attached diagram. Figure 5As shown, the upper frame 7 is installed inside the fixed seat 2. The upper frame 7 matches the stabilizing frame 6. The upper frame 7 and the stabilizing frame 6 are matched with the conveyor belt 4. One end of the detection seat 3 is rotatably connected to the reciprocating screw 8, which is driven by the stepper motor 10. The detection box 9 is installed on the outer wall of the detection seat 3, and the detection box 9 matches the reciprocating screw 8. This device, through the arrangement of the conveyor seat 1, the fixed seat 2 and the detection seat 3, can achieve integrated automatic detection without manual intervention, avoiding errors caused by human factors, ensuring the accuracy and reliability of the detection results, improving detection efficiency, and achieving multiple detection effects. During detection, the device conveys multiple oil pumps through the conveyor seat 1 and performs detection through the fixed seat 2 and the detection seat 3, achieving uninterrupted detection function, ensuring detection efficiency, and ensuring the accuracy of detection data.

[0042] As attached Figure 2-3As shown, a limiting shaft 501 is slidably connected to one end of the output shaft 5. A stop plate 502 is fixedly installed on the outer wall of the limiting shaft 501. The stop plate 502 matches the conveyor belt 4. A chuck 503 is fixedly installed to one end of the limiting shaft 501. A locking post 504 is slidably connected inside the chuck 503. A compression spring 505 is fixedly installed at one end of the locking post 504. The other end of the compression spring 505 is fixedly connected to the inner top wall of the chuck 503. A stop groove 506 is formed inside the locking post 504. A stop plate 505 is slidably connected inside the stop groove 506. The height of the top inclined block 507 decreases from the outside to the inside. A release shaft 508 is fixedly installed at one end of the top inclined block 507. The other end of the release shaft 508 passes through the interior of the abutment plate 502 and abuts against one end of the output shaft 5. A snap-fit ​​spring 509 is installed at one end of the abutment plate 502, and the other end of the snap-fit ​​spring 509 is connected to one end of the output shaft 5. Friction grooves are formed on the outer wall of the limiting shaft 501. In use, the stepper motor 10 drives the output shaft 5 to rotate, thereby enabling the oil pump to rotate for testing. During use, the chuck 503 engages the rotating shaft of the oil pump, and the rotation of the output shaft 5 drives the testing. After the test, the limiting shaft 501 moves inward, abutting against the abutment groove 506 on the inner wall of the retaining post 504. This causes the abutment groove 506 to move inward, disengaging the retaining post 504 from the oil pump shaft. During operation, after the oil pump shaft enters the chuck 503, the retaining post 504 engages with the oil pump shaft under the action of the compression spring 505, thus achieving a fixed position. The device, through the setting of the chuck 503, can extend the chuck post 504 to clamp the oil pump shaft when rotation testing is required. After the test is completed, the chuck 503 can automatically retract, which on the one hand does not affect the entry of the oil pump to be tested, facilitating the test again, and on the other hand can realize the function of automatically disengaging and clamping the oil pump shaft, realizing automated operation. At the same time, the chuck 503 of this device can adaptively clamp oil pump shafts of different diameters, realizing the testing of oil pumps of different sizes and models.

[0043] As attached Figure 1 and attached Figure 4As shown, a fixed plate 401 is installed on the outer wall of the conveyor belt 4. Multiple fixed plates 401 are present. A partition 402 is fixedly installed inside each fixed plate 401. An adapting plate 403 is slidably connected to the inner wall of the fixed plate 401. The top of one end of the adapting plate 403 is sloped. An adapting spring 404 is fixedly installed on the outer wall of the other end of the adapting plate 403. The other end of the adapting spring 404 is fixedly connected to the outer wall of the partition 402. A pushing inclined block 407 is installed at one end of the fixed plate 401. The width of the movable inclined block 407 increases from the outside to the inside, and the inclined block 407 is pushed to match the abutment plate 502. The other end of the fixed plate 401 is equipped with a toothed plate 408. There are multiple fixed plates 401 in this device. The oil pump is placed between two spaced fixed plates 401 and is clamped and fixed by the adapting plate 403. At the same time, its upper part is set as an inclined surface, which can facilitate the placement and clamping of the oil pump. In addition, the adapting plate 403 of this device can adaptively clamp oil pumps of different sizes, which is convenient for testing oil pumps of different sizes.

[0044] As attached Figure 1 As shown, a drive shaft 101 is rotatably connected inside the transmission seat 1. The drive shaft 101 is fixedly connected to the output end of the stepper motor 10 via a first drive belt 102. The reciprocating screw 8 is fixedly connected to the output end of the stepper motor 10 via a second drive belt 103.

[0045] As attached Figure 5As shown, a transmission shaft 405 is fixedly installed at the center of one end of the conveyor belt 4. A transmission gear 406 is installed on the outer wall of the transmission shaft 405 via a one-way bearing. The transmission gear 406 meshes with the drive gear 104. The drive gear 104 is fixedly installed on the outer wall of the drive shaft 101. A first spiral spring 105 is fixedly installed on the outer wall of one end of the drive shaft 101. The other end of the first spiral spring 105 is fixedly connected to the inner side wall of the conveyor seat 1. When the stepper motor 10 is started, the stepper motor 10 will drive the drive shaft 101 to rotate through the first transmission belt 102. The drive shaft 101 drives the transmission... When gear 104 and transmission gear 406 rotate, because transmission gear 406 is connected to transmission shaft 405 via a one-way bearing, the rotation of transmission shaft 101 does not drive transmission shaft 405 to rotate. At this time, the first spiral spring 105 is in a compressed state. Simultaneously, the diameter of transmission shaft 101 is larger than the output end of stepper motor 10. Therefore, the rotation of stepper motor 10 can limit the reverse rotation of transmission shaft 101. When stepper motor 10 stops rotating, under the action of the first spiral spring 105, transmission shaft 101 resets and reverses. At this point, the rotation of transmission shaft 101 will drive transmission gear 405 to rotate. Wheel 406 rotates, and conveyor belt 4 transports the oil pump to be tested. During this transport, the oil pump being tested will shift, causing a slight displacement of the compression adaptation plate 403. At this time, the pushing wedge 407 at one end of the fixed plate 401 will abut against the abutment plate 502. As the width of the abutment increases, the abutment plate 502 will cause the limiting shaft 501 to slide inside the output shaft 5. The disengaging shaft 508 is then subjected to the abutment force, causing the chuck 503 to disengage from the oil pump's rotating shaft. The clamping spring 509 is compressed, achieving disengagement from the test. The rotating shaft of the oil pump to be tested will then be opposite the chuck 503. Under the action of the snap-fit ​​spring 509, the limiting shaft 501 slowly resets, facilitating clamping and fixing again to achieve the detection function. Under the action of the transmission shaft 101, this device can stagger the conveying with the stepper motor 10. When the stepper motor 10 starts, it is in the detection state, and the conveyor belt 4 stops conveying. After the stepper motor 10 stops, it is in the detection completed state, and the conveyor belt 4 conveys, realizing the linkage function. The staggered output can avoid mutual interference and avoid the phenomenon of detection and conveying at the same time. At the same time, the conveyor belt 4 of this device is driven by the stepper motor 10, which can save energy.

[0046] As attached Figure 1 and attached Figure 6As shown, a side plate 409 is fixedly installed on the side wall of the top of the conveyor seat 1. A double-acting lead screw 410 is rotatably connected to the inner wall of the side plate 409. A drive gear 411 is fixedly installed on the outer wall of the double-acting lead screw 410. The drive gear 411 matches the toothed plate 408. A pressure box 601 is installed at the bottom of the stabilizing frame 6. The pressure box 601 is threadedly connected to the outer wall of the top of the double-acting lead screw 410. A pressure plate 602 is slidably connected inside the pressure box 601. A pressure spring 603 is fixedly installed on the top of the pressure plate 602. The top of the pressure spring 603 is fixedly installed on the bottom of the slide plate 604. The slide plate 604 is slidably connected to the inner top wall of the pressure box 601. A return spring 605 is fixedly installed at one end of the slide plate 604. The other end of the return spring 605 is fixedly connected to the inner side wall of the pressure box 601.

[0047] As attached Figure 7 As shown, the upper top frame 7 is located inside the conveyor belt 4. The bidirectional screw 410 is rotatably connected inside the upper top frame 7. A threaded plate 701 is slidably connected inside the upper top frame 7. The threaded plate 701 is threadedly connected to the outer wall of the lower part of the bidirectional screw 410. The threads of the upper and lower parts of the bidirectional screw 410 are opposite. A groove 702 is opened inside the threaded plate 701. An upper top plate 703 is slidably connected inside the groove 702. A top extension spring 704 is fixedly installed at one end of the upper top plate 703. The other end of the top extension spring 704 is fixedly connected to the inner wall of the groove 702. A second spiral spring 705 is fixedly installed at the bottom of the bidirectional screw 410. The other end of the second spiral spring 705 is fixedly connected to the inner bottom wall of the fixed seat 2. When the conveyor belt 4 is conveying, the toothed plate 408 on its outer wall will mesh with the drive gear 411, so that the toothed plate 408 drives the bidirectional screw 410 to rotate. At the same time, the displacement of the conveyor belt 4 will prevent the toothed plate 408 from meshing with the drive gear. When wheel 411 disengages, it restricts the drive gear 411. Only when the conveyor belt 4 shifts again will the toothed plate 408 disengage from the drive gear 411. This prevents the oil pump from being unable to be fixed due to the reverse rotation of the double-acting screw 410. When the toothed plate 408 drives the drive gear 411 to rotate, the double-acting screw 410 will drive the lower pressure box 601 to shift downward, and the upper top plate 7 will shift upward, so that the lower pressure plate 602 presses against the upper part of the oil pump, and the upper top plate 703 abuts against the bottom of the oil pump, achieving a fixing effect. When the conveyor belt 4 is conveying, when the fixing plate 401 is compressed, the lower pressure plate 602 closes the top plate 703 and can shift briefly to ensure that the tested oil pump is conveyed. When conveying again, the toothed plate 408 disengages from the drive gear 411, and under the action of the second spiral spring 705, the upper and lower top plates return to their original positions, making it easy to fix the oil pump to be tested.

[0048] As attached Figure 1 and attached Figure 8As shown, a third spiral spring is fixedly installed on the outer wall of the reciprocating screw 8, and the third spiral spring is fixedly connected to the inner wall of the detection seat 3. A pusher frame 801 is threadedly connected to the outer wall of the reciprocating screw 8. Two sealing plates 901 are slidably connected inside the detection box 9. An oil receiving pipe 902 and an oil outlet pipe 903 are respectively installed on the outer walls of the two sealing plates 901. A compression spring 906 is fixedly installed at the other end of the sealing plate 901, and the other end of the compression spring 906 is fixedly connected to the inner side wall of the detection box 9. An opening and closing plate 904 is slidably connected inside the detection box 9, located between the two sealing plates 901. An opening and closing spring 904 is fixedly installed on the outer wall of the opening and closing plate 904. 05. The other end of the opening and closing spring 905 is fixedly connected to the inner wall of the detection box 9. After the detection is completed, the conveyor belt 4 transports the oil pump that has been tested. At this time, the tested oil pump will be opposite one end of the push frame 801. At the same time, the push frame 801 pushes the oil pump into the interior of the detection box 9. One end of the oil pump abuts against the opening and closing plate 904. When the opening and closing plate 904 is pushed out, under the action of the compression spring 906, the sealing plate 901 abuts against the oil pump. At this time, the oil receiving pipe 902 and the oil outlet pipe 903 seal the oil outlet end and the oil inlet end of the oil pump, realizing the detection of the oil output and sealing of the oil pump, realizing the function of automated detection, and at the same time, the detection and the conveyor belt 4 form a linkage function.

[0049] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A gear-type balance shaft dual-supply oil pump test bench, comprising a transmission seat (1), a fixed seat (2), and a testing seat (3), characterized in that, The conveyor seat (1), the fixed seat (2), and the detection seat (3) are installed side by side in sequence. A conveyor belt (4) is provided on the outer surface of the conveyor seat (1). The conveyor belt (4) is also located above the fixed seat (2) and the detection seat (3). A stepper motor (10) is installed on the outer wall of the fixed seat (2). An output shaft (5) is fixedly installed on the output end of the stepper motor (10). The output shaft (5) is driven and connected to the conveyor belt (4). A stabilizing frame (6) is fixedly installed on the outer wall of the other end of the fixed seat (2). An upper top frame (7) is installed inside the fixed seat (2). The upper top frame (7) matches the stabilizing frame (6). The upper top frame (7) and the stabilizing frame (6) match the conveyor belt (4). One end of the detection seat (3) is rotatably connected to a reciprocating screw (8). The reciprocating screw (8) is driven by the stepper motor (10). A detection box (9) is installed on the outer wall of the detection seat (3). The detection box (9) matches the reciprocating screw (8). One end of the output shaft (5) is slidably connected to a limiting shaft (501). A stop plate (502) is fixedly installed on the outer wall of the shaft (501). The stop plate (502) matches the conveyor belt (4). A chuck (503) is fixedly installed at one end of the limiting shaft (501). A locking pin (504) is slidably connected inside the chuck (503). A compression spring (505) is fixedly installed at one end of the locking pin (504). The other end of the compression spring (505) is fixedly connected to the inner top wall of the chuck (503). A stop groove (506) is opened inside the locking pin (504). 6) has an internal sliding connection with a stop block (507). The height of the stop block (507) decreases from the outside to the inside. A release shaft (508) is fixedly installed at one end of the stop block (507). The other end of the release shaft (508) passes through the inside of the stop plate (502) and abuts against one end of the output shaft (5). A snap-fit ​​spring (509) is installed at one end of the stop plate (502). The other end of the snap-fit ​​spring (509) is connected to one end of the output shaft (5). Friction grooves are formed on the outer wall of the limiting shaft (501).

2. The gear-type balance shaft dual-supply oil pump test bench according to claim 1, characterized in that, A fixing plate (401) is installed on the outer wall of the conveyor belt (4). There are multiple fixing plates (401). A partition plate (402) is fixedly installed inside the fixing plate (401). An adaptation plate (403) is slidably connected to the inner side wall of the fixing plate (401). The top of one end of the adaptation plate (403) is set as an inclined surface. An adaptation spring (404) is fixedly installed on the outer wall of the other end of the adaptation plate (403). The other end of the adaptation spring (404) is fixedly connected to the outer wall of the partition plate (402). A pushing inclined block (407) is installed on one end of the fixing plate (401). The width of the pushing inclined block (407) increases from the outside to the inside. The pushing inclined block (407) matches the abutment plate (502). A toothed plate (408) is installed on the other end of the fixing plate (401).

3. A test bench for a gear-type balance shaft dual-supply oil pump according to claim 2, characterized in that, The transmission seat (1) is internally rotatably connected to a drive shaft (101), which is fixedly connected to the output end of the stepper motor (10) via a first drive belt (102); the reciprocating screw (8) is fixedly connected to the output end of the stepper motor (10) via a second drive belt (103).

4. A test bench for a gear-type balance shaft dual-supply oil pump according to claim 3, characterized in that, A transmission shaft (405) is fixedly installed at the center of one end of the conveyor belt (4). A transmission gear (406) is installed on the outer wall of the transmission shaft (405) through a one-way bearing. The transmission gear (406) meshes with the transmission gear (104). The transmission gear (104) is fixedly installed on the outer wall of the transmission shaft (101). A first spiral spring (105) is fixedly installed on the outer wall of one end of the transmission shaft (101). The other end of the first spiral spring (105) is fixedly connected to the inner wall of the transmission seat (1).

5. A test bench for a gear-type balance shaft dual-supply oil pump according to claim 4, characterized in that, A side plate (409) is fixedly installed on the side wall of the top of the conveyor seat (1). A two-way lead screw (410) is rotatably connected to the inner wall of the side plate (409). A drive gear (411) is fixedly installed on the outer wall of the two-way lead screw (410). The drive gear (411) is matched with the toothed plate (408). The bottom of the stabilizing frame (6) is equipped with a pressure box (601), which is threaded to the outer wall of the top of the double-acting screw (410). The pressure box (601) is slidably connected to a pressure plate (602) inside the pressure box (601). A pressure spring (603) is fixedly installed on the top of the pressure plate (602). The top of the pressure spring (603) is fixedly installed on the bottom of the slide plate (604). The slide plate (604) is slidably connected to the inner top wall of the pressure box (601). A return spring (605) is fixedly installed on one end of the slide plate (604). The other end of the return spring (605) is fixedly connected to the inner side wall of the pressure box (601).

6. A test bench for a gear-type balance shaft dual-supply oil pump according to claim 5, characterized in that, The upper top frame (7) is located inside the conveyor belt (4). The bidirectional screw (410) is rotatably connected inside the upper top frame (7). A threaded plate (701) is slidably connected inside the upper top frame (7). The threaded plate (701) is threadedly connected to the outer wall of the lower part of the bidirectional screw (410). The threads of the upper and lower parts of the bidirectional screw (410) are opposite. A groove (702) is opened inside the threaded plate (701). An upper top plate (703) is slidably connected inside the groove (702). A top extension spring (704) is fixedly installed at one end of the upper top plate (703). The other end of the top extension spring (704) is fixedly connected to the inner wall of the groove (702). A second spiral spring (705) is fixedly installed at the bottom of the bidirectional screw (410). The other end of the second spiral spring (705) is fixedly connected to the inner bottom wall of the fixed seat (2).

7. A test bench for a gear-type balance shaft dual-supply oil pump according to claim 6, characterized in that, A third spiral spring is fixedly installed on the outer wall of the reciprocating screw (8), and the third spiral spring is fixedly connected to the inner wall of the detection seat (3). A push frame (801) is threadedly connected to the outer wall of the reciprocating screw (8). The detection box (9) is internally connected to a sealing plate (901), and there are two sealing plates (901). An oil receiving pipe (902) and an oil outlet pipe (903) are respectively installed on the outer walls of the two sealing plates (901). A compression spring (906) is fixedly installed at the other end of the sealing plate (901). The other end of the compression spring (906) is fixedly connected to the inner wall of the detection box (9). The detection box (9) is internally connected to an opening and closing plate (904), which is located between the two sealing plates (901). An opening and closing spring (905) is fixedly installed on the outer wall of the opening and closing plate (904). The other end of the opening and closing spring (905) is fixedly connected to the inner wall of the detection box (9).

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