Gearbox transmission testing device

Abstract

The present invention relates to the technical field of gearbox transmission testing, and specifically to a gearbox transmission testing device. The present invention comprises a frame and a gearbox, a conveyor belt is installed in the middle of the frame, a U-shaped frame and a material table are fixedly provided on the top of the frame, an input part 1, an input part 2 and a load simulation part distributed in a herringbone structure are provided between the U-shaped frame and the frame, the input shaft and the output shaft ends of the gearbox are flange-connected with a shaft head 2; a dovetail groove 1 is provided on the top of the frame on both sides of the conveyor belt and in the middle of the inner side of the U-shaped frame, a dovetail block 1 is slidably installed in the three dovetail grooves 1, and a threaded shaft is rotatably installed inside the three dovetail grooves 1, the dovetail block 1 is threadedly sleeved on the outer side of the corresponding threaded shaft, a transverse feed assembly is installed on the top of the two dovetail blocks 1 on the frame, and a longitudinal feed assembly is installed on the bottom of the dovetail block 1 on the U-shaped frame. The present invention can be applied to realize continuous automatic testing of various types of gearboxes.

Description

Technical Field

[0001] The present invention relates to the technical field of gearbox transmission testing, in particular to a gearbox transmission testing device. Background Art

[0002] A gearbox is a transmission device that achieves speed changes through the precise meshing of multiple gears. It is a core component in mechanical transmission systems, primarily used to adjust output speed and torque by reducing or increasing torque, thereby ensuring smooth operation of mechanical equipment. Currently, gearboxes are generally required to undergo load testing before leaving the factory.

[0003] The prior art discloses a Chinese patent with publication number CN 221198942 U: Gearbox testing tooling, and discloses a drive motor, a support frame, a dynamometer, a first torque and speed measuring instrument, and a second torque and speed measuring instrument. It also discloses an upper connecting end plate, a lower connecting end plate, and a plurality of support columns arranged between the upper connecting end plate and the lower connecting end plate. The first torque and speed measuring instrument is driven to operate by the drive output shaft of the drive motor, and the first transmission output shaft of the gearbox under test is driven to rotate around its own central axis. The second torque and speed measuring instrument is connected to the first transmission output shaft and the dynamometer, thereby driving the dynamometer to operate, so as to detect the working performance of the gearbox under test by comparing the measurement values ​​of the first torque and speed measuring instrument with the measurement values ​​of the second torque and speed measuring instrument.

[0004] However, the above-mentioned existing technology still has certain defects, that is, during use, the gearbox needs to be replaced manually after each test, which reduces the test efficiency and is only applicable to the test of a single type of gearbox, and has low applicability. Summary of the Invention

[0005] The object of the present invention is to provide a gearbox transmission testing device to solve the problems raised in the above background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A gearbox transmission testing device comprises a frame and a gearbox, wherein a conveyor belt for step-by-step conveying of the gearbox is installed in the middle of the frame, a U-shaped frame and a material table located on both sides of the U-shaped frame are fixedly provided on the top of the frame, an input part 1, an input part 2 and a load simulation part are movably installed between the U-shaped frame and the frame, and the ends of the input shaft and the output shaft of the gearbox are both flange-connected with a second shaft head;

[0008] The top of the frame is located on both sides of the conveyor belt and in the middle of the inner side of the U-shaped frame. A dovetail groove is provided. A dovetail block is slidably installed in each of the three dovetail grooves, and a threaded shaft is rotatably installed inside each of the three dovetail grooves. The dovetail block is threadedly sleeved on the outer side of the corresponding threaded shaft. A transverse feed assembly is installed on the top of the two dovetail blocks on the frame, and a longitudinal feed assembly is installed on the bottom of the dovetail block on the U-shaped frame.

[0009] In a preferred embodiment, the transverse feed assembly includes a vertical plate fixed to the top of the corresponding dovetail block 1 and a dovetail groove 2 opened on the top of the corresponding dovetail block 1, the dovetail block 2 is slidably connected inside the dovetail groove 2, a U-shaped frame 1 is fixed on the top of the dovetail block 2, a cylinder 1 is fixedly installed on the outer side of the vertical plate, and the telescopic end of the cylinder 1 is fixedly connected to the corresponding U-shaped frame 1;

[0010] The longitudinal feeding assembly includes a U-shaped frame 2 fixed on the bottom of the corresponding dovetail block 1, and two cylinders 2 are fixedly installed on the outside of the U-shaped frame 2. The telescopic ends of the two cylinders 2 are fixedly connected with a horizontal plate.

[0011] In a preferred embodiment, the input part 1 includes a stand fixed to the top of the corresponding dovetail block 1, and a drive motor 1 is fixedly installed on one side of the stand. The input part 2 includes a drive motor 2 fixed to the bottom of the corresponding dovetail block 1, and the load simulation part includes a seat block fixed to the top of the corresponding dovetail block 1.

[0012] The output shaft ends of the drive motor 1 and the drive motor 2 and one side of the seat block are all equipped with rotating shafts, and the ends of the three rotating shafts are flange-connected with shaft heads 1. The ends of the three shaft heads 1 away from the rotating shaft at their respective positions are movable through the corresponding vertical plates and U-shaped frame 2, and two ring plates 1 for limiting the position of the shaft head 1 are fixed on the outside of each shaft head 1.

[0013] In a preferred embodiment, the longitudinal feed assembly and the two transverse feed assemblies are each provided with a docking assembly, and the three docking assemblies each include a frame, the frame on the transverse feed assembly is fixed to the top of the corresponding U-shaped frame, and the frame on the longitudinal feed assembly is fixed between the two transverse plates;

[0014] The frame consists of two square plates and straight rods fixedly connected at four corners between opposite sides of the two square plates, and torque sensors are fixedly installed between the four straight rods.

[0015] In a preferred embodiment, the docking assembly further includes shaft cylinders that movably penetrate the two square plates, two ring plates for limiting the position of the shaft cylinders are fixedly sleeved on the outer sides of the two shaft cylinders, and opposite ends of the two shaft cylinders are drivingly connected to the connecting components on the torque sensors at corresponding positions;

[0016] A cross block is fixedly provided on the inner side of one end of the shaft cylinder, and a cross slot is provided on one end of the shaft head 1 and the shaft head 2 inserted into the corresponding shaft cylinder.

[0017] In a preferred embodiment, the longitudinal feed assembly and the two transverse feed assemblies are each provided with a reinforcement assembly, the reinforcement assembly comprising a ring cylinder 2 fixedly sleeved on the outer side of one of the ring plates 1, and a plurality of trapezoidal plates are movably provided on the outer side of the ring cylinder 2;

[0018] The reinforcement assembly also includes a straight plate fixed at one end of each trapezoidal plate and a guide rod fixed on the outside of the second ring tube and opposite to the straight plate. One end of the guide rod movably passes through the corresponding straight plate, and a spring three is sleeved on the outside of the guide rod to fixedly connect the second ring tube and the corresponding straight plate.

[0019] In a preferred embodiment, the load simulation part further includes a torque adjustment assembly, which includes a disc fixedly embedded on the outside of the seat block and a buckle frame fixed on the outside of the seat block. The rotating shaft mounted on the seat block is rotatably mounted on the axis centerline of the disc through a bearing. Two concentrically arranged clamping rings are fixedly provided on the outside of the disc, and a gear ring is movably connected between the two clamping rings and the buckle frame.

[0020] A gear 2 for driving the gear ring to rotate is also rotatably mounted on the outer side of the seat block, and a drive motor 3 for driving the gear 2 to rotate is fixedly mounted on the side of the seat block away from the gear 2.

[0021] In a preferred embodiment, the torque adjustment assembly further comprises an annular cylinder 1 fixed to the outside of the disc and an arc block fixed to the inside of the gear ring, a T-shaped plate is movably inserted and inserted at a position on the outside of the annular cylinder 1 corresponding to the arc block, one end of the T-shaped plate extending to the inside of the annular cylinder 1 is fixedly connected to an arc frame, and a spring 2 is fixedly connected between the T-shaped plate and the outside of the annular cylinder 1;

[0022] A friction column is rotatably mounted on the inner side of the arc frame, and a drive motor 4 for driving the friction column to rotate is fixedly mounted on the outer side of the arc frame.

[0023] In a preferred embodiment, a correction and positioning mechanism for adjusting the position of the gear box on the conveyor belt is provided between the input part 1, the input part 2 and the load simulation part. The correction and positioning mechanism consists of a correction and positioning part and a clamping part.

[0024] In a preferred embodiment, the deviation correction and positioning part includes two U-shaped blocks fixed between the input part 1 and the load simulation part, and a through slot 2 is horizontally penetrated in the middle of the two U-shaped blocks. Four core shafts are rotatably installed inside the through slot 2. The outer sides of the two centrally arranged core shafts are fixedly sleeved with meshing gears 1, and the outer sides of the two core shafts at the two end positions are fixedly sleeved with circular plates;

[0025] The outer sides of the two circular plates are fixed with tooth blocks meshing with the corresponding gear 1 and a swing bar for shifting the gear box to move. The top of the U-shaped block is fixed with a drive motor 5 for driving one of the centrally arranged core shafts to rotate.

[0026] The clamping part includes a Y-shaped push block fixed on the input part and the load simulation part and a through-slot 1 extending through both ends of the U-shaped block, and also includes a trapezoidal lifting block located on the inner side of the U-shaped block. Both ends of the trapezoidal lifting block are fixed with ear blocks slidably connected to the corresponding through-slot 1. A vertical rod movably extending through the corresponding ear block is fixed inside the through-slot 1. A spring 1 is sleeved on the outer side of the vertical rod for fixedly connecting the ear block and the bottom end surface of the inner cavity of the corresponding through-slot 1. A clamping column is fixed at the bottom of the trapezoidal lifting block.

[0027] Beneficial effects of the present invention:

[0028] 1. The present invention uses a conveyor belt to convey the target gearbox to the test station in a step-by-step manner, thereby realizing continuous automatic testing of the target gearbox and improving the testing efficiency. At the same time, it can also test various types of gearboxes, realizing multi-purpose use of one machine.

[0029] 2. The present invention can adjust the position of the target gearbox entering the test station by using four swing bars that swing toward the target gearbox, aligning the clamping column with the mounting hole on the target gearbox, and synchronously fastening the clamping column to the target gearbox through the plugging process of the docking assembly and the corresponding shaft head;

[0030] 3. The present invention can use four trapezoidal plates to fill the vacant cross groove section on the shaft head 1 during the plugging process of the docking assembly and the corresponding shaft head 2, thereby ensuring the use strength of the shaft head 1 during the test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0032] Figure 1 This is a schematic diagram of the overall structure from a first perspective of the first application scenario of the present invention;

[0033] Figure 2 This is a schematic diagram of the overall structure from a second perspective of the first application scenario of the present invention;

[0034] Figure 3 This is a schematic diagram of the overall structure of the second application scenario of the present invention;

[0035] Figure 4This is a schematic diagram of the overall structure of the third application scenario of the present invention;

[0036] Figure 5 This invention Figure 1 Schematic diagram of the local structure in;

[0037] Figure 6 It is a partial cross-sectional structural diagram of the deviation-correcting and positioning mechanism of the present invention;

[0038] Figure 7 This is a schematic diagram of the expansion of the docking assembly of the present invention;

[0039] Figure 8 It is a schematic structural diagram of the reinforcement assembly of the present invention;

[0040] Figure 9 It is a schematic structural diagram of the torque adjustment assembly of the present invention;

[0041] Figure 10 This invention Figure 9 Schematic diagram of the cross-section structure.

[0042] The reference numerals in the figure are as follows: 1. Frame; 2. U-shaped frame; 3. Conveyor belt; 4. Material table; 5. Input part 1; 6. Input part 2; 7. Load simulation part; 8. Correction and positioning mechanism; 81. U-shaped block; 82. Y-shaped push block; 83. Through slot 1; 84. Vertical rod; 85. Trapezoidal lifting block; 86. Clamping column; 87. Ear block; 88. Spring 1; 89. Through slot 2; 810. Gear 1; 811. Circular plate; 812. Pendulum bar; 9. Dovetail groove 1; 10. Threaded shaft; 11. Dovetail block 1; 12. Dovetail groove 2; 13. Dovetail block 2; 14. U-shaped frame 1; 15. Cylinder 1; 16. Vertical plate; 17. U-shaped frame 2; 18. Cylinder 2 ;19. Horizontal plate;20. Rotating shaft;21. Seat block;22. Shaft head one;23. Shaft head two;24. Ring plate one;25. Docking assembly;251. Frame;252. Torque sensor;253. Shaft cylinder;254. Ring plate two;26. Torque adjustment assembly;261. Disc;262. Retaining ring;263. Buckle frame;264. Ring gear;265. Ring cylinder one;266. Gear two;267. Arc block;268. T-plate;269. Arc frame;2610. Friction column;2611. Spring two;27. Reinforcement assembly;271. Ring cylinder two;272. Trapezoidal plate;273. Straight plate;274. Guide rod;275. Spring three. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 any creative efforts shall fall within the scope of protection of the present invention.

[0044] The gearbox of the present invention is a type of transmission equipment and is a core component in a mechanical transmission system. It is mainly used to adjust the output speed and torque by reducing speed or increasing torque. The transmission testing device is a type of equipment for testing structural components and is mainly used to continuously test the transmission performance of the gearbox.

[0045] Example 1: Refer to the attached instructions Figure 1-Figure 5 、 Figure 7 and Figure 9 The present invention provides a gearbox transmission test device, comprising a frame 1 and a gearbox. A conveyor belt 3 for stepping the gearbox is installed in the middle of the frame 1. The conveyor belt 3 is driven by a stepping servo motor of model PK268M-01A. The conveyor belt 3 is installed by opening slots for installing conveyor rollers on both sides of the frame 1, and making the conveyor belt 3 fit the surface of the frame 1 for transmission, ensuring that the conveyor belt 3 is stably transmitted. A U-shaped frame 2 and a material table 4 located on both sides of the U-shaped frame 2 are fixed on the top of the frame 1. The two material tables 4 They are respectively arranged in the loading area and the unloading area, and the gear box to be tested is placed on the conveyor belt 3 and the gear box that has completed the test is pushed away from the conveyor belt by an electric push rod to intermittently push the push plate (the existing technology used in the loading and unloading process is not described here, and the drawings are not drawn). The electric push rod uses an electric push rod of model HB-DJ801. The input part 1 5, the input part 2 6 and the load simulation part 7 distributed in a herringbone structure are movably installed between the U-shaped frame 2 and the frame 1. The input shaft and the output shaft ends of the gear box are flange-connected with the shaft head 23;

[0046] A dovetail groove 9 is provided on the top of the frame 1 on both sides of the conveyor belt 3 and in the middle of the inner side of the U-shaped frame 2. A dovetail block 11 is slidably installed in each of the three dovetail grooves 9, and a threaded shaft 10 is rotatably installed inside each of the three dovetail grooves 9. The dovetail block 11 is threadedly sleeved on the outer side of the corresponding threaded shaft 10. The rotation of each threaded shaft 10 is driven by a servo motor of model JSMA-PUC02D, which is used to accurately control the position of the dovetail block 11 in the corresponding dovetail groove 9. A transverse feed assembly is installed on the top of the two dovetail blocks 11 on the frame 1, and a longitudinal feed assembly is installed on the bottom of the dovetail block 11 on the U-shaped frame 2. A docking assembly 25 is provided on the longitudinal feed assembly and the two transverse feed assemblies.

[0047] The transverse feed assembly includes a vertical plate 16 fixed to the top of the corresponding dovetail block 11 and a dovetail groove 12 opened on the top of the corresponding dovetail block 11. The dovetail groove 12 is slidably connected to the dovetail block 13. A U-shaped frame 14 is fixed to the top of the dovetail block 13. A cylinder 15 is fixedly installed on the outside of the vertical plate 16, and the telescopic end of the cylinder 15 is fixedly connected to the corresponding U-shaped frame 14.

[0048] The longitudinal feed assembly includes a U-shaped frame 17 fixed to the bottom of the corresponding dovetail block 11. Two cylinders 18 are fixedly installed on the outside of the U-shaped frame 17. The telescopic ends of the two cylinders 18 are fixedly connected to a horizontal plate 19.

[0049] The input part 1 5 includes a stand fixed to the top of the corresponding dovetail block 11, and a drive motor 1 is fixedly installed on one side of the stand. The input part 2 6 includes a drive motor 2 fixed to the bottom of the corresponding dovetail block 11, and the load simulation part 7 includes a seat block 21 fixed to the top of the corresponding dovetail block 11;

[0050] A rotating shaft 20 is installed on the output shaft ends of the driving motor 1 and the driving motor 2 and on one side of the seat block 21. The ends of the three rotating shafts 20 are flange-connected with a shaft head 1 22. The ends of the three shaft heads 1 22 away from the rotating shaft 20 at their respective positions are movable through the corresponding vertical plate 16 and U-shaped frame 2 17, and two ring plates 1 24 for limiting the shaft head 1 22 are fixed on the outside of each shaft head 1 22.

[0051] It should be noted that before the transmission performance test of the gearbox to be tested (hereinafter referred to as the target gearbox) is carried out, it is necessary to pre-connect the second shaft head 23 with the input shaft and the output shaft on the gearbox by flanges. Then, the gearboxes with the second shaft head 23 installed are pushed onto the conveyor belt 3 one by one, and the conveyor belt 3 is used to convey the target gearbox to the test station in a step-by-step manner to test its transmission performance. Since gearboxes generally have three types: coaxial type (i.e., planetary gearboxes), parallel axis type, and vertical axis type, the test process is described according to the following three cases;

[0052] Coaxial gearbox test: First, according to the position of the input shaft and the output shaft of the target gearbox after entering the test station, the servo motor is used to drive the threaded shaft 10 to rotate to adjust the position of the corresponding dovetail block 11 inside the dovetail groove 9, so that the docking assembly 25 on the input part 15 and the load simulation part 7 is in a colinear state with the input shaft and the output shaft of the target gearbox after entering the test station. Then, after the target gearbox with the shaft head 23 installed is transported to the test station between the input part 15 and the load simulation part 7 by the conveyor belt 3, the corresponding U-shaped frame 14 is pushed by the cylinder 15 to move along the dovetail groove 212 at the location, so that the docking assembly 25 on the input part 15 and the load simulation part 7 moves toward each other and is respectively connected with the shaft head 23 on the input shaft and output shaft of the target gearbox. Then, the drive motor is started to work to complete the transmission performance test of the coaxial gearbox.

[0053] Parallel shaft gearbox test: Similarly, adjust the relative positions of the two dovetail blocks 11 according to the positions of the input shaft and output shaft of the target gearbox after entering the test station, so that the docking components 25 on the input part 15 and the load simulation part 7 are respectively aligned with the input shaft and output shaft of the target gearbox after entering the test station, and make the docking components 25 on the input part 15 and the load simulation part 7 in a staggered parallel state, and then proceed with the test;

[0054] Vertical axis gearbox test: Similarly, adjust the relative positions of the two dovetail blocks 11 according to the positions of the input shaft and output shaft of the target gearbox after it enters the test station, so that the docking components 25 on the input part 2 6 and the load simulation part 7 are respectively aligned with the input shaft and output shaft of the target gearbox after entering the test station, and make the docking components 25 on the input part 2 6 and the load simulation part 7 in a vertical coplanar and perpendicular state, and then perform the test.

[0055] Specifically, if Figure 7 As shown, the three docking assemblies 25 each include a frame 251. The frame 251 on the transverse feed assembly is fixed to the top of the corresponding U-shaped frame 14, and the frame 251 on the longitudinal feed assembly is fixed between the two transverse plates 19. The frame 251 is composed of two square plates and straight rods fixedly connected at the four corners between the opposite sides of the two square plates. A torque sensor 252 is fixedly installed between the four straight rods.

[0056] The docking assembly 25 also includes a shaft cylinder 253 that is movable through the two square plates respectively. Two ring plates 254 for limiting the shaft cylinder 253 are fixedly sleeved on the outside of the two shaft cylinders 253. The opposite ends of the two shaft cylinders 253 are transmission-connected to the connecting parts on the corresponding position torque sensor 252, wherein the two ring plates 254 on the outside of each shaft cylinder 253 are respectively in a fit state with the two sides of the corresponding square plate, and are used to limit the position of the shaft cylinder 253, thereby ensuring the connection stability between the shaft cylinder 253 and the connecting parts on the torque sensor 252, and a cross block is fixed on the inner side of one end of the shaft cylinder 253, and a cross slot is provided on the end of the shaft head 1 22 and the shaft head 2 23 inserted into the corresponding shaft cylinder 253.

[0057] It should be noted that during the process of plugging the circumferential shaft head 23 connected to the input shaft and output shaft of the target gearbox with the corresponding docking assembly 25 (here, the test of the coaxial gearbox is described with reference to the description), after the position adjustment of the two dovetail blocks 11 is completed, the cylinder 15 on the input part 5 and the load simulation part 7 is started to push the two U-shaped frames 14 to move toward each other, so that the shaft barrel 253 away from the corresponding position shaft head 22 approaches the shaft head 23 at its position, so that the cross block inside the shaft barrel 253 is plugged into the cross groove on the shaft head 23. However, during this process, the cross block inside the shaft barrel 253 away from the target gearbox always remains plugged into the cross groove of the shaft head 22 connected to the rotating shaft 20. In this way, the connection between the input part 5 and the load simulation part 7 and the target gearbox is completed. Then, when the test process is started, the transmission performance of the target gearbox is tested by comparing the measurement value of the torque sensor 252 on the input part 5 with the measurement value of the torque sensor 252 on the load simulation part 7.

[0058] Specifically, if Figure 8As shown, the longitudinal feed assembly and the two transverse feed assemblies are each provided with a reinforcement assembly 27, and the reinforcement assembly 27 includes a ring cylinder 271 fixedly sleeved on the outside of one of the ring plates 1 24, and a plurality of trapezoidal plates 272 (the present invention is described with four as an example) are movably penetrated on the outside of the ring cylinder 271. The reinforcement assembly 27 also includes a straight plate 273 fixed at one end of each trapezoidal plate 272 and a guide rod 274 fixed on the outside of the ring cylinder 271 and facing the straight plate 273. One end of the guide rod 274 movably penetrates the corresponding straight plate 273, and the outside of the guide rod 274 is sleeved with a fixed connection between the ring cylinder 271 and the corresponding straight plate 273. Spring three 275, wherein, when spring three 275 is in a natural state, the reinforcement component 27 is in the state shown in the accompanying figure, and the docking component 25 in this state is also just connected with the corresponding shaft head two 23, and the inclined side surfaces of the multiple trapezoidal plates 272 face the shaft cylinder 253 at the location. At the same time, the maximum flared end annular surface diameter of the area surrounded by the inclined surfaces of the multiple trapezoidal plates 272 in the initial state is larger than the outer diameter of the shaft cylinder 253, so that when the corresponding shaft cylinder 253 approaches the reinforcement component 27, it can simultaneously squeeze the multiple trapezoidal plates 272 to move along the corresponding guide rod 274 toward the outside of the ring cylinder two 271.

[0059] It should be noted that when the docking assembly 25 and the shaft head 23 are in the initial non-plug-in state, one end of the shaft cylinder 253 on the docking assembly 25 close to the shaft head 1 22 is in a state of being plugged into the inside of the ring cylinder 271. At this time, the straight surface of the trapezoidal plate 272 adjacent to the inclined surface (i.e., the side of the rectangular cavity formed between the four trapezoidal plates) is in contact with the outside of the shaft cylinder 253, and the spring 3 275 is in a stretched state. In the process of plugging the peripheral shaft head 23 connected to the input shaft and output shaft of the target gearbox with the corresponding docking assembly 25, as the plug-in process progresses, The shaft cylinder 253 initially located inside the ring cylinder 271 will gradually separate from the ring cylinder 271, and the trapezoidal plate 272 will gradually be inserted into the cross groove on the shaft head 22 under the action of the restoring force of the corresponding spring 3 275 as the corresponding shaft cylinder 253 separates. Because as the shaft cylinder 253 gradually separates, a section of the cross groove on the shaft head 22 will be left vacant, which will easily affect the strength of the shaft head 22. Therefore, the automatically reset trapezoidal plate 272 is used to fill the vacant section on the shaft head 22 to enhance the strength of the shaft head 22 and ensure that the test process is carried out stably.

[0060] Specifically, if Figure 9-10As shown, the load simulation part 7 also includes a torque adjustment component 26, which includes a disc 261 fixedly embedded in the outer side of the seat block 21 and a buckle frame 263 fixed to the outer side of the seat block 21. The rotating shaft 20 installed on the seat block 21 is rotatably installed at the axial center line position of the disc 261 through a bearing. Two concentrically arranged clamping rings 262 are fixedly provided on the outer side of the disc 261. A gear ring 264 is movably inserted between the two clamping rings 262 and the buckle frame 263. Among them, the buckle frame 263 is configured as a J-shaped structure, and a trapezoidal block is added to the inner side of the buckle frame 263. On the one hand, it can improve the buckling stability of the gear ring 264, and on the other hand, it can reserve space for the gear ring 264 to rotate normally. A gear 2 266 for driving the gear ring 264 to rotate is also rotatably installed on the outer side of the seat block 21. A driving motor 3 for driving the gear 2 266 to rotate is fixedly installed on the side of the seat block 21 away from the gear 2 266.

[0061] The torque adjustment assembly 26 also includes a ring cylinder 265 fixed on the outside of the disc 261 and an arc block 267 fixed on the inside of the gear ring 264. A T-shaped plate 268 is movably inserted at the position of the arc block 267 on the outside of the ring cylinder 265. One end of the T-shaped plate 268 extending to the inside of the ring cylinder 265 is fixedly connected to an arc frame 269, and a spring 2611 is fixedly connected between the T-shaped plate 268 and the outside of the ring cylinder 265. A friction column 2610 is rotatably installed on the inside of the arc frame 269, and the outside of the arc frame 269 is fixedly connected to the spring 2611. A drive motor 4 is fixedly installed to drive the friction column 2610 to rotate, wherein the friction column 2610 can be set to a regular polygon structure (this application takes a regular hexagon as an example for explanation), and each surface on the outside of the friction column 2610 is a concave structure that can completely fit with the outside of the rotating shaft 20. In addition, when the spring 2 2611 is in the initial state, the friction column 2610 and the outside of the rotating shaft 20 are set apart, that is, the arc block 267 and the T-plate 268 are in a non-extrusion contact state.

[0062] It should be noted that during the transmission performance test of the target gearbox, the gear 2 266 can be driven to rotate by driving motor 3, and the rotating gear 2 266 can be used to drive the ring gear 264 to rotate, so that the arc block 267 that rotates synchronously with the ring gear 264 will gradually squeeze the corresponding T-plate 268, allowing the friction column 2610 to approach the rotating shaft 20 and form an extruded contact state, and making the corresponding spring 2 2611 in a stretched state. In this way, the pressure of the friction column 2610 on the rotating shaft 20 can be changed by changing the degree of squeezing of the arc block 267 on the corresponding T-plate 268, thereby realizing the adjustment of the torque during the test. Among them, when the friction surface of the friction column 2610 in the current use state is greatly damaged, the friction column 2610 can be driven to rotate by driving motor 4 to complete the switching of the friction surface.

[0063] Example 2: Refer to the attached instructions Figure 1 and Figure 5-Figure 6 The present invention provides a gearbox transmission testing device, wherein a correction and positioning mechanism 8 for adjusting the position of the gearbox on the conveyor belt 3 is provided between the input part 1 5, the input part 2 6 and the load simulation part 7. The correction and positioning mechanism 8 is composed of a correction and positioning part and a clamping part.

[0064] The deviation correction and positioning part includes two U-shaped blocks 81 fixed between the input part 15 and the load simulation part 7. A through slot 2 89 is horizontally penetrated in the middle of the two U-shaped blocks 81. Four core shafts are rotatably installed inside the through slot 2 89. The outer sides of the two centrally arranged core shafts are fixedly sleeved with meshing gears 1 810. The outer sides of the two core shafts at the two end positions are fixedly sleeved with circular plates 811. The outer sides of the two circular plates 811 are fixed with tooth blocks meshing with the corresponding gear 1 810 and a pendulum bar 812 for shifting the gear box to move. A driving motor 5 for driving one of the centrally arranged core shafts to rotate is fixedly installed on the top of the U-shaped block 81. When the two pendulum bars 812 are driven by the corresponding gear 1 810 and are in a collinear arrangement, the distance between the opposite ends of the two pendulum bars 812 is less than the length of the through slot 2 89.

[0065] The clamping part includes a Y-shaped push block 82 fixed on the input part 5 and the load simulation part 7 and a through slot 83 extending through both ends of the U-shaped block 81. One end of the flared part of the Y-shaped push block 82 is fixed to the outer side of the corresponding U-shaped frame 14, and the other end is in contact with the outer side of the corresponding square plate. It also includes a trapezoidal lifting block 85 located on the inner side of the U-shaped block 81. Both ends of the trapezoidal lifting block 85 are fixed with ear blocks 87 slidably connected to the inside of the corresponding through slot 83. The through slot 83 is fixed with a vertical rod 84 that movably passes through the corresponding ear block 87. The outer side of the vertical rod 84 is provided with a spring 88 that fixedly connects the ear block 87 and the bottom end surface of the inner cavity of the corresponding through slot 83. A clamping column 86 is fixed to the bottom of the trapezoidal lifting block 85. When the spring 88 is in the natural state, the horizontal plane of the bottom end surface of the clamping column 86 at the bottom of the trapezoidal lifting block 85 is higher than the horizontal plane of the mounting part on the target gear box, ensuring that the target gear box can smoothly enter the test station under the action of the conveyor belt 3.

[0066] It should be noted that, in the process of using the conveyor belt 3 to transport the target gearbox to the test station, when the target gearbox arrives at the test station, the conveyor belt 3 stops transporting, and at the same time, the drive motor 5 is started to drive the corresponding gear 1 810 to rotate, and the rotating gear 1 810 is used to drive the corresponding circular plate 811 to rotate, so that the pendulum bar 812 on the circular plate 811 is swung toward the direction of the target gearbox, thereby using the four swung pendulum bars 812 to adjust the position of the target gearbox on the test station, so that the target gearbox is The mounting hole on the box is directly opposite to the clamping column 86 on the trapezoidal lifting block 85. Then, as the docking assembly 25 approaches the target gear box, it will gradually use the Y-shaped push block 82 that moves synchronously with the U-shaped frame 14 to gradually approach the trapezoidal lifting block 85 and squeeze the Y-shaped push block 82 to move it downward along the vertical rod 84. At the same time, the corresponding spring 88 is compressed to allow the clamping column 86 at the bottom of the trapezoidal lifting block 85 to gradually insert into the corresponding mounting hole, thereby buckling the target gear box and ensuring the smooth progress of the test process.

[0067] In the above technical solution, the drive motor 1 and the drive motor 2 mentioned above both use Y series AC motors, and the specific models are selected according to actual production; the cylinder 1 15 and the cylinder 2 18 mentioned above both use single-acting cylinders with model DSA25N200; the torque sensor 252 mentioned above uses an HBM torque sensor with model K-T40B-001R-MF-SM-DU2-1-U; the drive motor 3 and the drive motor 4 mentioned above both use servo drivers with model JSMA-PUC02D; the drive motor 5 mentioned above uses a micro motor with model R380.

[0068] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A gearbox transmission testing device, comprising a frame (1) and a gearbox, characterized in that: A conveyor belt (3) for stepping the gear box is installed in the middle of the frame (1); a U-shaped frame (2) and a material table (4) located on both sides of the U-shaped frame (2) are fixedly provided on the top of the frame (1); an input part 1 (5), an input part 2 (6) and a load simulation part (7) in a herringbone-shaped structure are movably installed between the U-shaped frame (2) and the frame (1); the input shaft and the output shaft ends of the gear box are both flange-connected with a shaft head 2 (23); The top of the frame (1) is provided with dovetail grooves (9) on both sides of the conveyor belt (3) and in the middle of the inner side of the U-shaped frame (2). The three dovetail grooves (9) are all slidably mounted with dovetail blocks (11), and the insides of the three dovetail grooves (9) are all rotatably mounted with threaded shafts (10). The dovetail blocks (11) are threadedly sleeved on the outer sides of the corresponding threaded shafts (10). The tops of the two dovetail blocks (11) on the frame (1) are both equipped with a transverse feed assembly, and the bottom of the dovetail block (11) on the U-shaped frame (2) is equipped with a longitudinal feed assembly. The transverse feed assembly includes a vertical plate (16) fixed on the top of the corresponding dovetail block (11) and a dovetail groove (12) opened on the top of the corresponding dovetail block (11), the dovetail block (13) is slidably connected inside the dovetail groove (12), a U-shaped frame (14) is fixed on the top of the dovetail block (13), a cylinder (15) is fixedly installed on the outside of the vertical plate (16), and the telescopic end of the cylinder (15) is fixedly connected to the corresponding U-shaped frame (14); The longitudinal feed assembly includes a U-shaped frame 2 (17) fixed to the bottom of the corresponding dovetail block 1 (11), two cylinders 2 (18) are fixedly installed on the outside of the U-shaped frame 2 (17), and the telescopic ends of the two cylinders 2 (18) are fixedly connected to the transverse plate (19); The input part 1 (5) includes a stand fixed on the top of the corresponding dovetail block 1 (11), and a driving motor 1 is fixedly installed on one side of the stand. The input part 2 (6) includes a driving motor 2 fixed on the bottom of the corresponding dovetail block 1 (11), and the load simulation part (7) includes a seat block (21) fixed on the top of the corresponding dovetail block 1 (11). The output shaft ends of the driving motor 1 and the driving motor 2 and one side of the seat block (21) are all equipped with a rotating shaft (20), and the ends of the three rotating shafts (20) are flange-connected with a shaft head 1 (22). The ends of the three shaft heads 1 (22) away from the rotating shaft (20) at the respective positions are movable through the corresponding vertical plate (16) and the U-shaped frame 2 (17), and two ring plates 1 (24) for limiting the shaft head 1 (22) are fixedly provided on the outer side of each shaft head 1 (22); The longitudinal feed assembly and the two transverse feed assemblies are each provided with a docking assembly (25), and the three docking assemblies (25) each include a frame (251), the frame (251) on the transverse feed assembly is fixed to the top of the corresponding U-shaped frame (14), and the frame (251) on the longitudinal feed assembly is fixed between the two transverse plates (19); The frame (251) is composed of two square plates and straight rods fixedly connected at four corners between opposite sides of the two square plates, and a torque sensor (252) is fixedly installed between the four straight rods; The docking assembly (25) further includes shaft cylinders (253) that are movable and pass through the two square plates, respectively. Two ring plates (254) for limiting the shaft cylinders (253) are fixedly sleeved on the outside of the two shaft cylinders (253). The opposite ends of the two shaft cylinders (253) are both transmission-connected to the connecting parts on the torque sensors (252) at corresponding positions. A cross block is fixedly provided on the inner side of one end of the shaft cylinder (253), and a cross slot is provided on one end of the shaft head 1 (22) and the shaft head 2 (23) inserted into the corresponding shaft cylinder (253); The longitudinal feed assembly and the two transverse feed assemblies are each provided with a reinforcement assembly (27), the reinforcement assembly (27) comprising a second ring cylinder (271) fixedly sleeved on the outside of one of the first ring plates (24), and a plurality of trapezoidal plates (272) movably penetrating the outside of the second ring cylinder (271); The reinforcement assembly (27) further includes a straight plate (273) fixed to one end of each trapezoidal plate (272) and a guide rod (274) fixed to the outside of the second ring tube (271) and facing the straight plate (273), one end of the guide rod (274) movably passes through the corresponding straight plate (273), and a spring (275) is sleeved on the outside of the guide rod (274) for fixedly connecting the second ring tube (271) and the corresponding straight plate (273).

2. A gearbox transmission testing device according to claim 1, characterized in that: The load simulation part (7) further includes a torque adjustment component (26), the torque adjustment component (26) including a disc (261) fixedly embedded on the outside of the seat block (21) and a buckle frame (263) fixed on the outside of the seat block (21), a rotating shaft (20) mounted on the seat block (21) is rotatably mounted on the axis centerline of the disc (261) through a bearing, two concentrically arranged clamping rings (262) are fixedly provided on the outside of the disc (261), and a gear ring (264) is movably connected between the two clamping rings (262) and the buckle frame (263); A second gear (266) for driving the gear ring (264) to rotate is also rotatably mounted on the outer side of the seat block (21), and a driving motor 3 for driving the second gear (266) to rotate is fixedly mounted on the side of the seat block (21) away from the second gear (266).

3. The gearbox transmission testing device according to claim 2, characterized in that: The torque adjustment assembly (26) further includes a ring tube (265) fixed on the outside of the disc (261) and an arc block (267) fixed on the inside of the gear ring (264); a T-shaped plate (268) is movably inserted through the position of the outer side of the ring tube (265) corresponding to the arc block (267); one end of the T-shaped plate (268) extending to the inside of the ring tube (265) is fixedly connected to an arc frame (269); and a spring (2611) is fixedly connected between the T-shaped plate (268) and the outer side of the ring tube (265); A friction column (2610) is rotatably mounted on the inner side of the arc frame (269), and a drive motor (4) for driving the friction column (2610) to rotate is fixedly mounted on the outer side of the arc frame (269).

4. The gearbox transmission testing device according to claim 1, characterized in that: A deviation correction and positioning mechanism (8) for adjusting the position of the gear box on the conveyor belt (3) is provided between the input part 1 (5), the input part 2 (6) and the load simulation part (7). The deviation correction and positioning mechanism (8) consists of a deviation correction and positioning part and a clamping part.

5. The gearbox transmission testing device according to claim 4, characterized in that: The deviation correction and positioning part comprises two U-shaped blocks (81) fixed between the input part 1 (5) and the load simulation part (7), the middle part of the two U-shaped blocks (81) is provided with a through groove 2 (89) running horizontally through, four core shafts are rotatably mounted inside the through groove 2 (89), the outer sides of the two core shafts arranged in the middle are fixedly sleeved with meshing gears 1 (810), and the outer sides of the two core shafts at the two end positions are fixedly sleeved with circular plates (811); The outer sides of the two circular plates (811) are fixed with tooth blocks meshing with the corresponding gear one (810) and a swing bar (812) for shifting the gear box to move. The top of the U-shaped block (81) is fixed with a drive motor five for driving one of the centrally arranged core shafts to rotate. The clamping portion includes a Y-shaped push block (82) fixed on the input portion (5) and the load simulation portion (7) and a through slot (83) extending through both ends of the U-shaped block (81), and also includes a trapezoidal lifting block (85) located on the inner side of the U-shaped block (81), both ends of the trapezoidal lifting block (85) are fixed with ear blocks (87) slidably connected to the inside of the corresponding through slot (83), the inside of the through slot (83) is fixed with a vertical rod (84) that movably extends through the corresponding ear block (87), the outer side of the vertical rod (84) is provided with a spring (88) that is fixedly connected to the ear block (87) and the bottom end surface of the inner cavity of the corresponding through slot (83), and a clamping column (86) is fixed at the bottom of the trapezoidal lifting block (85).

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