Gearbox transmission testing device

Abstract

The invention relates to the technical field of gearbox transmission testing, in particular to a gearbox transmission testing device which comprises a rack and a gearbox, a conveying belt is installed in the middle of the rack, a U-shaped frame and a material table are fixedly arranged at the top of the rack, and a first input part, a second input part and a load simulation part which are distributed in a triangular structure are arranged between the U-shaped frame and the rack. The end parts of the input shaft and the output shaft of the gear box are in flanged connection with shaft heads II; first dovetail grooves are formed in the positions, located on the two sides of the conveying belt, of the top of the rack and in the middle of the inner side of the U-shaped frame, first dovetail blocks are slidably installed in the three first dovetail grooves correspondingly, threaded shafts are rotationally installed in the three first dovetail grooves correspondingly, and the first dovetail blocks are connected to the outer sides of the corresponding threaded shafts in a threaded and sleeving mode. Transverse feeding assemblies are installed at the tops of the two first dovetail blocks located on the rack, a longitudinal feeding assembly is installed at the bottom of the first dovetail block located on the U-shaped frame, and the gearbox continuous automatic testing device can be suitable for continuous automatic testing of various types of gearboxes.

Description

Technical Field

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

[0002] A gearbox is a speed-changing device that achieves a speed-changing effect through the precise meshing of multiple gears. It belongs to the core component of a mechanical transmission system and is mainly used to adjust the output speed and torque by reducing speed or increasing torque, thereby ensuring the smooth operation of mechanical equipment. Currently, before a gearbox leaves the factory, it generally needs to be subjected to a loading test.

[0003] The prior art discloses a Chinese patent with the publication number CN 221198942 U: a gearbox testing tooling, which also discloses a driving 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 driving output shaft of the driving motor drives the first torque and speed measuring instrument to operate, driving the first transmission output shaft of the gearbox under test to rotate around its own central axis. The second torque and speed measuring instrument is in transmission connection with 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 measured values of the first torque and speed measuring instrument and the second torque and speed measuring instrument.

[0004] However, the above prior art still has certain defects. That is, during use, after each test is completed, the gearbox needs to be manually replaced, which reduces the test efficiency and can only be applicable to the testing of a single type of gearbox, with low applicability. Summary of the Invention

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

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

[0007] A gearbox transmission testing device includes a frame and a gearbox. A conveyor belt for stepwise conveying the gearbox is installed in the middle of the frame. A U-shaped frame and material platforms on both sides of the U-shaped frame are fixedly provided at the top of the frame. An input part one, an input part two, and a load simulation part distributed in a triangular structure are movably installed between the U-shaped frame and the frame. Flange connections are provided at the ends of the input shaft and the output shaft of the gearbox with shaft heads two.

[0008] On the top of the frame, dovetail grooves I are provided on both sides of the conveyor belt and in the middle of the inner side of the U-shaped frame. Three dovetail grooves I are each slidably installed with a dovetail block I, and threaded shafts are rotatably installed inside the three dovetail grooves I. The dovetail block I is threadedly sleeved on the outer side of the corresponding threaded shaft. Transverse feed components are installed on the tops of the two dovetail blocks I located on the frame, and a longitudinal feed component is installed on the bottom of the dovetail block I located on the U-shaped frame.

[0009] In a preferred embodiment, the transverse feed component includes a vertical plate fixed to the top of the corresponding dovetail block I and a dovetail groove II provided on the top of the corresponding dovetail block I. A dovetail block II is slidably connected inside the dovetail groove II. A U-shaped frame I is fixed to the top of the dovetail block II. A cylinder I is fixedly installed on the outer side of the vertical plate, and the telescopic end of the cylinder I is fixedly connected to the corresponding U-shaped frame I.

[0010] The longitudinal feed component includes a U-shaped frame II fixed to the bottom of the corresponding dovetail block I. Two cylinders II are fixedly installed on the outer side of the U-shaped frame II. The telescopic ends of the two cylinders II are fixedly connected to a cross plate at their ends.

[0011] In a preferred embodiment, the input part I includes a vertical frame fixed to the top of the corresponding dovetail block I. A driving motor I is fixedly installed on one side of the vertical frame. The input part II includes a driving motor II fixed to the bottom of the corresponding dovetail block I. The load simulation part includes a seat block fixed to the top of the corresponding dovetail block I.

[0012] Rotating shafts are installed at the ends of the output shafts of the driving motor I and the driving motor II and on one side of the seat block. Flange connections are provided at the ends of the three rotating shafts with shaft heads I. One end of the three shaft heads I away from the rotating shafts at their respective positions respectively passes through the corresponding vertical plate and U-shaped frame II movably, and two ring plates I for limiting the shaft head I are fixedly provided on the outer side of each shaft head I.

[0013] In a preferred embodiment, docking components are provided on the longitudinal feed component and the two transverse feed components. The three docking components each include a frame. The frame on the transverse feed component is fixed to the top of the corresponding U-shaped frame I, and the frame on the longitudinal feed component is fixed between the two cross plates.

[0014] The frame is composed of two square plates and straight rods fixed at the four corner positions between the opposite sides of the two square plates. A torque sensor is fixedly installed between the four straight rods.

[0015] In a preferred embodiment, the docking component further includes shaft cylinders respectively passing through the two square plates movably. Two ring plates II for limiting the shaft cylinders are fixedly sleeved on the outer sides of the two shaft cylinders. The opposite ends of the two shaft cylinders are respectively in transmission connection with the connecting components on the torque sensors at the corresponding positions.

[0016] On the inner sides of one ends of the shaft cylinders, cross blocks are fixedly arranged, and cross grooves are formed at one ends of the first shaft head and the second shaft head inserted into the corresponding shaft cylinders.

[0017] In a preferred embodiment, reinforcement components are provided on the longitudinal feed component and the two transverse feed components. The reinforcement component includes a second annular cylinder fixedly sleeved on the outer side of one of the first annular plates, and a plurality of trapezoidal plates are movably penetrated through the outer side of the second annular cylinder;

[0018] The reinforcement component further includes a straight plate fixed at one end of each trapezoidal plate and a guide rod fixed on the outer side of the second annular cylinder opposite to the straight plate. One end of the guide rod movably penetrates through the corresponding straight plate, and a third spring for fixedly connecting the second annular cylinder and the corresponding straight plate is sleeved on the outer side of the guide rod.

[0019] In a preferred embodiment, the load simulation part further includes a torque adjustment component. The torque adjustment component includes a disk fixedly embedded on the outer side of the seat block and a buckle fixed on the outer side of the seat block. The rotating shaft installed on the seat block is rotatably installed at the axial center position of the disk through a bearing. Two concentrically arranged retaining rings are fixedly provided on the outer side of the disk, and a gear ring is movably inserted between the two retaining rings and the buckle;

[0020] A second gear for driving the gear ring to rotate is also rotatably installed on the outer side of the seat block, and a third driving motor for driving the second gear to rotate is fixedly installed on one side of the seat block away from the second gear.

[0021] In a preferred embodiment, the torque adjustment component further includes a first annular cylinder fixed on the outer side of the disk and an arc-shaped block fixed on the inner side of the gear ring. A T-shaped plate is movably penetrated and inserted at a position corresponding to the arc-shaped block on the outer side of the first annular cylinder. One end of the T-shaped plate extending to the inner side of the first annular cylinder is fixedly connected with an arc-shaped frame, and a second spring is fixedly connected between the T-shaped plate and the outer side of the first annular cylinder;

[0022] A friction column is rotatably installed on the inner side of the arc-shaped frame, and a fourth driving motor for driving the friction column to rotate is fixedly installed on the outer side of the arc-shaped frame.

[0023] In a preferred embodiment, a deviation rectifying and positioning mechanism for adjusting the position of the gearbox on the conveyor belt is provided between the first input part, the second input part and the load simulation part. The deviation rectifying and positioning mechanism is composed of a deviation rectifying and positioning part and a clamping part.

[0024] In a preferred embodiment, the deviation rectifying and positioning part includes two U-shaped blocks fixed between the first input part and the load simulation part. A second through groove is horizontally penetrated through the middle of the two U-shaped blocks. Four core shafts are rotatably installed inside the second through groove. Meshing first gears are fixedly sleeved on the outer sides of the two centrally arranged core shafts, and circular plates are fixedly sleeved on the outer sides of the two core shafts at both ends;

[0025] On the outer sides of both of the two circular plates, there are fixed tooth blocks that mesh with the corresponding first gears and swing bars for shifting the gearbox to move. On the top of the U-shaped block, there is fixedly installed a fifth driving motor for driving one of the centrally arranged mandrels to rotate.

[0026] The clamping part includes Y-shaped push blocks fixed on the first input part and the load simulation part, and first through grooves penetrating through both ends of the U-shaped block. It also includes trapezoidal lifting blocks inside the U-shaped block. On both ends of the trapezoidal lifting blocks, there are fixedly arranged ear blocks that are slidably connected to the inside of the corresponding first through grooves. Inside the first through grooves, there are fixedly arranged vertical rods that movably penetrate through the corresponding ear blocks. On the outer sides of the vertical rods, there are spring one sleeved that fixedly connect the ear blocks and the bottom end faces of the inner cavities of the corresponding first through grooves. At the bottom of the trapezoidal lifting blocks, there are fixedly arranged clamping columns.

[0027] Advantages of the present invention:

[0028] 1. By using the conveyor belt to stepwise convey the target gearbox to the test station, the present invention can realize continuous and automatic testing of the target gearbox, improve the testing efficiency. At the same time, it can also test various styles of gearboxes, achieving 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 towards the target gearbox, align the clamping columns with the mounting holes on the target gearbox, and synchronously complete the fastening of the clamping columns to the target gearbox through the insertion process of the docking component and the corresponding second shaft head.

[0030] 3. The present invention can use four trapezoidal plates to fill the vacant cross-slot sections on the first shaft head during the insertion process of the docking component and the corresponding second shaft head, thereby ensuring the use strength of the first shaft head during the testing process. Description of the drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic diagram of the overall structure from the first perspective of Application Scenario 1 of the present invention;

[0033] Figure 2 It is a schematic diagram of the overall structure from the second perspective of Application Scenario 1 of the present invention;

[0034] Figure 3 It is a schematic diagram of the overall structure of Application Scenario 2 of the present invention;

[0035] Figure 4It is a schematic diagram of the overall structure of Application Scenario 3 of the present invention;

[0036] Figure 5 It is the present invention Figure 1 A schematic diagram of a partial structure therein;

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

[0038] Figure 7 It is a schematic diagram of the deployment of the docking component of the present invention;

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

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

[0041] Figure 10 It is the present invention Figure 9 A schematic diagram of the cross-sectional 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, deviation rectifying and positioning mechanism; 81, U-shaped block; 82, Y-shaped push block; 83, slot 1; 84, vertical rod; 85, trapezoidal lifting block; 86, clamping post; 87, ear block; 88, spring 1; 89, slot 2; 810, gear 1; 811, circular plate; 812, swinging 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 1; 23, shaft head 2; 24, ring plate 1; 25, docking component; 251, frame; 252, torque sensor; 253, shaft cylinder; 254, ring plate 2; 26, torque adjustment component; 261, disc; 262, retaining ring; 263, fastening bracket; 264, gear ring; 265, ring cylinder 1; 266, gear 2; 267, arc block; 268, T-shaped plate; 269, arc bracket; 2610, friction post; 2611, spring 2; 27, reinforcement component; 271, ring cylinder 2; 272, trapezoidal plate; 273, straight plate; 274, guide rod; 275, spring 3. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

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

[0045] Embodiment 1: Referring to the attached drawings of the specification Figures 1-5 、 Figure 7 and Figure 9 The present invention provides a gearbox transmission test device, including a frame 1 and a gearbox. A conveyor belt 3 for step-by-step conveying the gearbox is installed in the middle of the frame 1. Among them, the conveyor belt 3 is driven by a step-by-step servo motor of model PK268M-01A. The installation of the conveyor belt 3 is carried out by opening notches 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 to ensure stable transmission of the conveyor belt 3. A U-shaped frame 2 and material platforms 4 located on both sides of the U-shaped frame 2 are fixedly provided at the top of the frame 1. The two material platforms 4 are respectively arranged in the loading area and the unloading area. Placing the gearbox to be tested on the conveyor belt 3 and pushing the gearbox that has completed the test off the conveyor belt are both carried out by intermittently pushing a push plate with an electric push rod (the loading and unloading process adopts the existing technology, which will not be elaborated here and is not shown in the drawings). The electric push rod used is an electric push rod of model HB-DJ801. An input part one 5, an input part two 6 and a load simulation part 7 distributed in a triangular structure are movably installed between the U-shaped frame 2 and the frame 1. Flange connections with shaft heads two 23 are provided at the ends of the input shaft and output shaft of the gearbox;

[0046] Dovetail grooves one 9 are opened on both sides of the conveyor belt 3 at the top of the frame 1 and in the middle of the inner side of the U-shaped frame 2. Three dovetail grooves one 9 are all slidably installed with dovetail blocks one 11, and threaded shafts 10 are rotatably installed inside the three dovetail grooves one 9. The dovetail blocks one 11 are threadedly sleeved on the outer sides of the corresponding threaded shafts 10. Among them, the rotation of each threaded shaft 10 is driven by a servo motor of model JSMA-PUC02D to accurately control the position of the dovetail block one 11 inside the corresponding dovetail groove one 9. Transverse feed components are installed on the tops of the two dovetail blocks one 11 located on the frame 1, and a longitudinal feed component is installed at the bottom of the dovetail block one 11 located on the U-shaped frame 2. Docking components 25 are provided on the longitudinal feed component and the two transverse feed components;

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

[0048] The longitudinal feed assembly includes a second U-shaped frame 17 fixed to the bottom of the corresponding first dovetail block 11. Two second cylinders 18 are fixedly installed on the outer side of the second U-shaped frame 17. The end parts of the telescopic ends of the two second cylinders 18 are both fixedly connected to a cross plate 19;

[0049] The first input part 5 includes a vertical frame fixed to the top of the corresponding first dovetail block 11. A first drive motor is fixedly installed on one side of the vertical frame. The second input part 6 includes a second drive motor fixed to the bottom of the corresponding first dovetail block 11. The load simulation part 7 includes a seat block 21 fixed to the top of the corresponding first dovetail block 11;

[0050] The end parts of the output shafts of the first drive motor and the second drive motor and one side of the seat block 21 are all installed with rotating shafts 20. The end parts of the three rotating shafts 20 are all flange-connected with first shaft heads 22. One ends of the three first shaft heads 22 far away from the rotating shafts 20 where they are located respectively pass through the corresponding vertical plate 16 and the second U-shaped frame 17 movably, and two ring plates 24 for limiting the first shaft heads 22 are fixedly provided on the outer side of each first shaft head 22.

[0051] It should be noted that before testing the transmission performance of the gearbox to be tested (hereinafter referred to as the target gearbox), it is necessary to pre-flange-connect the second shaft head 23 with the input shaft and the output shaft on the gearbox. Then, the gearbox installed with the second shaft head 23 is successively pushed onto the conveyor belt 3, and the conveyor belt 3 is used to step-feed the target gearbox to the test station to test its transmission performance. Since there are generally three types of gearboxes: coaxial type (i.e., planetary gearbox), parallel shaft type, and vertical shaft type, the test process will be described according to the following three situations;

[0052] Coaxial gearbox test: First, according to the positions of the input shaft and output shaft of the target gearbox after it enters the test station, the servo motor is used to drive the threaded shaft 10 to rotate, so as to adjust the position of the corresponding dovetail block 11 inside the dovetail groove 9, so that the docking components 25 on the input part 5 and the load simulation part 7 are collinear with the input shaft and output shaft of the target gearbox after it enters the test station. Then, after the target gearbox equipped with the second shaft head 23 is conveyed to the test station between the input part 5 and the load simulation part 7 by the conveyor belt 3, the cylinder 15 is used to push the corresponding U-shaped frame 14 to move along the dovetail groove 2 at its position, so that the docking components 25 on the input part 5 and the load simulation part 7 move towards each other and are respectively inserted into the second shaft heads 23 on the input shaft and output shaft of the target gearbox. Then, start the driving motor 1 to complete the transmission performance test of the coaxial gearbox;

[0053] Parallel shaft gearbox test: Similarly, according to the positions of the input shaft and output shaft of the target gearbox after it enters the test station, adjust the relative positions of the two dovetail blocks 11 so that the docking components 25 on the input part 5 and the load simulation part 7 are respectively facing the input shaft and output shaft of the target gearbox after it enters the test station, and make the docking components 25 on the input part 5 and the load simulation part 7 in a misaligned parallel state, and then the test can be carried out;

[0054] Vertical shaft gearbox test: Similarly, according to the positions of the input shaft and output shaft of the target gearbox after it enters the test station, adjust the relative positions of the two dovetail blocks 11 so that the docking components 25 on the second input part 6 and the load simulation part 7 are respectively facing the input shaft and output shaft of the target gearbox after it enters the test station, and make the docking components 25 on the second input part 6 and the load simulation part 7 in a vertically coplanar perpendicular state, and then the test can be carried out.

[0055] Specifically, as Figure 7 shown, all three docking components 25 include a frame 251. The frame 251 on the transverse feed component is fixed on the top of the corresponding U-shaped frame 14, and the frame 251 on the longitudinal feed component is fixed between the two cross plates 19. The frame 251 is composed of two square plates and straight rods fixed at the four corner positions between the opposite sides of the two square plates. A torque sensor 252 is fixedly installed between the four straight rods;

[0056] The docking component 25 further includes shaft cylinders 253 that respectively and movably penetrate through two square plates. Two annular plates II 254 for limiting the shaft cylinders 253 are fixedly sleeved on the outer sides of the two shaft cylinders 253. The opposite ends of the two shaft cylinders 253 are respectively in transmission connection with the connecting components on the corresponding torque sensors 252. Among them, the two annular plates II 254 on the outer side of each shaft cylinder 253 are respectively in a fitting state with both sides of the corresponding square plate, used to limit the position of the shaft cylinder 253, so as to ensure the connection stability between the shaft cylinder 253 and the connecting component on the torque sensor 252. Cross blocks are fixedly provided on the inner sides of one ends of the shaft cylinders 253. Cross grooves are respectively formed at one ends of the first shaft head 22 and the second shaft head 23 inserted into the corresponding shaft cylinders 253.

[0057] It should be noted that during the process of inserting the second shaft head 23 connected to the input shaft and the output shaft of the target gearbox into the corresponding docking component 25 (here, it is described with reference to the test of a coaxial gearbox), after the positions of the two first dovetail blocks 11 are adjusted, the air cylinders 15 on the first input part 5 and the load simulation part 7 are started to push the two U-shaped frames I 14 to move towards each other, so that the shaft cylinder 253 far from the corresponding first shaft head 22 approaches the second shaft head 23 at its position, and the cross block inside the shaft cylinder 253 is inserted into the cross groove on the second shaft head 23. However, during this process, the cross block inside the shaft cylinder 253 far from the target gearbox always remains inserted into the cross groove of the first shaft head 22 connected to the rotating shaft 20. In this way, the connection between the first input part 5 and the load simulation part 7 and the target gearbox can be completed. Then, when the test process is started, the transmission performance of the target gearbox is tested by comparing the measured values of the torque sensors 252 on the first input part 5 and the load simulation part 7.

[0058] Specifically, as Figure 8As shown, the longitudinal feed assembly and the two transverse feed assemblies are provided with a reinforcement assembly 27, and the reinforcement assembly 27 includes a second ring cylinder 271 fixedly sleeved on the outside of one of the ring plates 1 24, and the outer side of the second ring cylinder 271 is movably penetrated with a plurality of trapezoidal plates 272 (the present invention is described by taking four as an example), and 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 outer side of the second 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 outer side of the guide rod 274 is sleeved with a fixed connection between the second ring cylinder 271 and the corresponding straight plate 273. Spring three 275, wherein when the spring three 275 is in a natural state, the reinforcement component 27 is in the state shown in the 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 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 surface of the rectangular cavity formed by the four trapezoidal plates) is attached to 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. As the shaft cylinder 253 gradually separates, a section of the cross groove on the shaft head 22 will be left vacant, which may 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, Figures 9-10As shown in the figure, the load simulation unit 7 further includes a torque adjustment component 26. The torque adjustment component 26 includes a disc 261 fixedly embedded on the outer side of the seat block 21 and a buckle 263 fixed on 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 position of the disc 261 through a bearing. Two concentrically arranged retaining rings 262 are fixedly provided on the outer side of the disc 261. A gear ring 264 is movably inserted between the two retaining rings 262 and the buckle 263. Among them, the buckle 263 is set as a J-shaped structure, and a trapezoidal block is added inside the buckle 263. On the one hand, it can improve the buckling stability of the gear ring 264, and on the other hand, it can leave a space for the normal rotation of the gear ring 264. A second gear 266 for driving the gear ring 264 to rotate is also rotatably installed on the outer side of the seat block 21. A third driving motor for driving the second gear 266 to rotate is fixedly installed on one side of the seat block 21 away from the second gear 266;

[0061] The torque adjustment component 26 further includes a first annular cylinder 265 fixed on the outer side of the disc 261 and an arc-shaped block 267 fixed on the inner side of the gear ring 264. A T-shaped plate 268 is movably inserted through the position corresponding to the arc-shaped block 267 on the outer side of the first annular cylinder 265. One end of the T-shaped plate 268 extending to the inner side of the first annular cylinder 265 is fixedly connected to an arc-shaped frame 269. A spring two 2611 is fixedly connected between the T-shaped plate 268 and the outer side of the first annular cylinder 265. A friction column 2610 is rotatably installed inside the arc-shaped frame 269, and a fourth driving motor for driving the friction column 2610 to rotate is fixedly installed on the outer side of the arc-shaped frame 269. Among them, the friction column 2610 can be set as a regular polygon structure (in this application, a regular hexagon is taken as an example for illustration), and each surface on the outer side of the friction column 2610 is an inner concave structure that can completely fit with the outer side of the rotating shaft 20. In addition, when the spring two 2611 is in the initial state, the friction column 2610 is separated from the outer side of the rotating shaft 20, that is, the arc-shaped block 267 and the T-shaped plate 268 are in a non-extruded contact state.

[0062] It should be noted that during the process of testing the transmission performance of the target gearbox, the second gear 266 can be driven to rotate by the third driving motor, and the rotating second gear 266 can be used to drive the gear ring 264 to rotate. As a result, the arc-shaped block 267 that rotates synchronously with the gear ring 264 will gradually squeeze the corresponding T-shaped plate 268, causing the friction column 2610 to approach the rotating shaft 20 and form an extrusion contact state, and making the corresponding spring two 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 extrusion degree of the arc-shaped block 267 on the corresponding T-shaped plate 268, so as to adjust the torque during the test. Among them, when the damage degree of the friction surface in the current use state of the friction column 2610 is relatively large, the friction column 2610 can be driven to rotate by the fourth driving motor to complete the switching of the friction surface.

[0063] Example 2: Refer to the attached specification Figure 1 and Figures 5-6 The present invention provides a gearbox transmission test device, wherein a deviation 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, and the deviation correction and positioning mechanism 8 is composed of a deviation 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, and a through slot 2 89 is horizontally penetrated in the middle of the two U-shaped blocks 81, and 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, and the outer sides of the two core shafts at the two end positions are fixedly sleeved with circular plates 811, and the outer sides of the two circular plates 811 are fixed with tooth blocks meshing with the corresponding gears 1 810 and swing bars 812 for moving 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, wherein, when the two swing bars 812 are in a colinear arrangement state under the drive of the corresponding gears 1 810, the distance between the opposite ends of the two swing 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 the two 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 fitted 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, and 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 passes through the corresponding ear block 87. The outer side of the vertical rod 84 is sleeved with a spring 88 that fixes 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 at the bottom of the trapezoidal lifting block 85, wherein when the spring 88 is in a natural state, the horizontal plane where the bottom end surface of the clamping column 86 at the bottom of the trapezoidal lifting block 85 is located is higher than the horizontal plane where the mounting part on the target gear box is located, 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 during the process of conveying the target gearbox to the test station by the conveyor belt 3, when the target gearbox reaches the test station, the conveyor belt 3 stops conveying. At the same time, the driving motor five is started to drive the corresponding gear one 810 to rotate, and the rotating gear one 810 is used to drive the corresponding circular plate 811 to rotate, so that the swing bar 812 on the circular plate 811 swings towards the target gearbox, thereby using the four swinging swing bars 812 to adjust the position of the target gearbox on the test station, making the mounting holes on the target gearbox align with the clamping posts 86 on the trapezoidal lifting block 85. Then, as the docking assembly 25 approaches the target gearbox, the Y-shaped push block 82 moving synchronously with the U-shaped frame one 14 will gradually approach the trapezoidal lifting block 85 and squeeze the Y-shaped push block 82, causing it to move downward along the vertical rod 84. At the same time, the corresponding spring one 88 is compressed, so that the clamping post 86 at the bottom of the trapezoidal lifting block 85 gradually inserts into the corresponding mounting hole to fasten the target gearbox and ensure the smooth progress of the test process.

[0067] In the above technical solution, the mentioned driving motor one and driving motor two both adopt Y-series AC motors, and the specific models are selected according to actual production; the mentioned cylinder one 15 and cylinder two 18 both adopt single-acting cylinders of model DSA25N200; the mentioned torque sensor 252 adopts an HBM torque sensor of model K-T40B-001R-MF-S-M-DU2-1-U; the mentioned driving motor three and driving motor four both adopt servo drivers of model JSMA-PUC02D; the mentioned driving motor five adopts a micro motor of model R380.

[0068] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A gearbox transmission testing device, comprising a frame (1) and a gearbox, characterized in that: A conveyor belt (3) for step-by-step conveying of 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 installed on the top of the frame (1); an input part 1 (5), an input part 2 (6) and a load simulation part (7) distributed in a herringbone structure are movably installed between the U-shaped frame (2) and the frame (1); and the ends of the input shaft and the output shaft of the gear box are flange-connected with a second shaft head (23); The frame (1) is provided with dovetail grooves (9) at the top, on both sides of the conveyor belt (3) and in the middle of the inner side of the U-shaped frame (2); three dovetail grooves (9) are slidably mounted with dovetail blocks (11); threaded shafts (10) are rotatably mounted inside the three dovetail grooves (9); dovetail blocks (11) are threadedly sleeved on the outer sides of the corresponding threaded shafts (10); transverse feeding assemblies are mounted on the tops of the two dovetail blocks (11) on the frame (1); and longitudinal feeding assemblies are mounted on the bottoms of the dovetail blocks (11) on the U-shaped frame (2).

2. A gearbox transmission testing device according to claim 1, characterized in that: The transverse feeding assembly comprises 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), a 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 outer side 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 feeding assembly comprises a U-shaped frame 2 (17) fixed at 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 a transverse plate (19).

3. A gearbox transmission testing device according to claim 2, characterized in that: The input part 1 (5) comprises a stand fixed on the top of the corresponding dovetail block 1 (11), a driving motor 1 is fixedly mounted on one side of the stand, the input part 2 (6) comprises a driving motor 2 fixed on the bottom of the corresponding dovetail block 1 (11), and the load simulation part (7) comprises a seat block (21) fixed on the top of the corresponding dovetail block 1 (11); The output shaft ends of the driving motors 1 and 2 and one side of the seat block (21) are both equipped with rotating shafts (20), and the ends of the three rotating shafts (20) are all flange-connected with shaft heads 1 (22), and the ends of the three shaft heads 1 (22) away from the rotating shafts (20) at the respective positions are movably penetrated through the corresponding vertical plates (16) and the U-shaped frame 2 (17), and two ring plates 1 (24) for limiting the position of the shaft heads 1 (22) are fixedly provided on the outer side of each shaft head 1 (22).

4. A gearbox transmission testing device according to claim 2, characterized in that: 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.

5. A gearbox transmission testing device according to claim 4, characterized in that: The docking assembly (25) further comprises shaft cylinders (253) which are respectively movable and penetrate the two square plates, two ring plates (254) for limiting the position of the shaft cylinders (253) are fixedly sleeved on the outer sides of the two shaft cylinders (253), and opposite ends of the two shaft cylinders (253) are drivingly 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 groove is provided on one end of the shaft head 1 (22) and the shaft head 2 (23) inserted into the corresponding shaft cylinder (253).

6. A gearbox transmission testing device according to claim 3, characterized in that: The longitudinal feeding assembly and the two transverse feeding assemblies are both 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) are movably penetrated on the outside of the second ring cylinder (271); The reinforcement assembly (27) further comprises 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 directly opposite to 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).

7. A gearbox transmission testing device according to claim 3, characterized in that: The load simulation part (7) further comprises a torque adjustment component (26), the torque adjustment component (26) comprising 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); the 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); a gear ring (264) is movably inserted 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).

8. A gearbox transmission testing device according to claim 7, characterized in that: The torque adjustment assembly (26) further comprises an annular 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 and penetrated at a position of the outer side of the annular tube (265) corresponding to the arc block (267); an end of the T-shaped plate (268) extending to the inside of the annular 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 annular tube (265); A friction column (2610) is rotatably mounted on the inner side of the arc frame (269), and a driving motor 4 for driving the friction column (2610) to rotate is fixedly mounted on the outer side of the arc frame (269).

9. 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) is composed of a deviation correction and positioning part and a clamping part.

10. A gearbox transmission testing device according to claim 9, 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 of the two U-shaped blocks (81) is provided with a second through groove (89) running horizontally, four core shafts are rotatably mounted inside the second through groove (89), the outer sides of the two centrally arranged core shafts 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); A tooth block meshing with the corresponding gear one (810) and a swing bar (812) for moving the gear box are fixed on the outside of the two circular plates (811), and a driving motor five for driving one of the centrally arranged core shafts to rotate is fixedly installed on the top of the U-shaped block (81); The clamping part comprises 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 the two ends of the U-shaped block (81), and also comprises a trapezoidal lifting block (85) located inside the U-shaped block (81), both ends of the trapezoidal lifting block (85) are fixedly provided with ear blocks (87) slidably connected to the inside of the corresponding through slot (83), the inside of the through slot (83) is fixedly provided with a vertical rod (84) movably extending through the corresponding ear block (87), the outside of the vertical rod (84) is sleeved with a spring (88) fixedly connecting 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 fixedly provided at the bottom of the trapezoidal lifting block (85).

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