Synchronous belt testing organization

Abstract

The application discloses a synchronous belt testing mechanism and relates to the technical field of synchronous belt detection. The synchronous belt testing mechanism comprises a rack, a driving unit, a driven unit and a pressing unit. The driving unit is slidably arranged on the rack and comprises a driving pulley. The driven unit is arranged on the rack and comprises a driven pulley. The driving pulley and the driven pulley are connected through a synchronous belt. The pressing unit is arranged on the support and is detachably connected with the driving pulley so that the driving pulley has a pressing state and a release state. In the pressing state, the pressing unit is connected with the driving pulley to limit the rotation of the driving pulley. In the release state, the pressing unit is disconnected with the driving pulley. The force measuring unit is drivingly connected with the driven pulley. In the pressing state, the force measuring unit drives the driven pulley to rotate to detect the tooth skipping force of the synchronous belt. The technical scheme provided by the application can comprehensively test the use performance of the synchronous belt.

Description

Technical Field

[0001] This invention relates to the field of synchronous belt detection technology, and in particular to a synchronous belt testing mechanism. Background Technology

[0002] In the field of industrial robots, synchronous belts and pulleys are widely used. During use, synchronous belts and pulleys may experience tooth skipping due to some extreme conditions. In addition, when there are multiple stages of transmission, the transmission process may lose accuracy. Furthermore, the tensile strength, lifespan, accuracy between the synchronous belt and the pulley, tension of the synchronous belt, and anti-tooth skipping ability of the synchronous belt all have a significant impact on the use of industrial robots. However, the current testing fixtures for synchronous belts only test the fatigue strength, lifespan, and tensile strength of the synchronous belts, resulting in incomplete test data. Summary of the Invention

[0003] The main objective of this invention is to propose a synchronous belt testing mechanism, which aims to comprehensively test the performance of synchronous belts.

[0004] To achieve the above objectives, the present invention proposes a synchronous band testing mechanism, comprising:

[0005] stand;

[0006] An active unit is slidably mounted on the platform, and the active unit includes an active pulley;

[0007] A driven unit is disposed on the platform. The driven unit includes a driven pulley. The driving pulley and the driven pulley are connected by a synchronous belt. The driven pulley has a second connecting member.

[0008] A transmission unit is slidably mounted on the platform and located between the driving unit and the driven unit. The transmission unit is connected to the driving pulley and the driven pulley respectively. The driving pulley drives the driven pulley to rotate through the transmission unit. An encoder is provided on the transmission unit to read the position data of the transmission unit.

[0009] A clamping unit is provided on the platform. The clamping unit is detachably connected to the drive pulley so that the drive pulley has a clamped state and a released state. In the clamped state, the clamping unit is connected to the drive pulley to restrict the rotation of the drive pulley. In the released state, the clamping unit is disconnected from the drive pulley.

[0010] A force measuring unit, in the clamped state, drives the driven pulley to rotate to detect the skipping force of the synchronous belt. The force measuring unit includes:

[0011] The force-applying rod is provided with a first connector, which is detachably connected to a second connector.

[0012] A lifting assembly is mounted on the platform and connected to the force-applying rod, and the lifting assembly drives the force-applying rod to move in the vertical direction;

[0013] A force-applying component is provided on the platform and is detachably connected to the end of the force-applying rod away from the driven pulley;

[0014] A force gauge is installed on the force-applying component and is used to measure the tension of the force-applying component;

[0015] In the released state, the lifting assembly drives the force-applying rod to rise to disengage from the driven pulley, and the force-applying assembly disengages from the force-applying rod; in the pressed state, the lifting assembly drives the force-applying rod to descend to connect the first connecting member and the second connecting member, and the force-applying assembly drives the force-applying rod to move in the direction of the force-applying assembly to rotate the driven pulley.

[0016] In one embodiment, the transmission unit includes:

[0017] The second mounting plate is slidably disposed on the platform;

[0018] The first pulley is rotatably mounted on the second mounting plate and is connected to the drive pulley via a first synchronous belt;

[0019] The second pulley is coaxially connected to the first pulley, and the second pulley is connected to the driven pulley via a second synchronous belt;

[0020] A second driving member is disposed on the platform and drivenly connected to the second mounting plate. The second driving member drives the second mounting plate to move toward the end away from the driven unit to increase the tension of the second synchronous belt.

[0021] In one embodiment, the active unit further includes:

[0022] A first mounting plate is slidably disposed on the platform;

[0023] An active motor is mounted on the first mounting plate and is driven by the active pulley.

[0024] A first driving member is disposed on the platform and drivenly connected to the first mounting plate. The first driving member drives the first mounting plate to move on the platform in a direction away from the driven unit to increase the tension of the first synchronous belt.

[0025] In one embodiment, the first mounting plate is provided with a first slot extending along the sliding direction of the first mounting plate. The active unit further includes a first fitting, which passes through the first slot and is connected to the platform. The first driving member drives the first mounting plate to slide on the platform, and the first mounting plate and the platform are fixed by the first fitting sliding in the first slot.

[0026] The second mounting plate is provided with a second slot, which extends along the sliding direction of the second mounting plate. The transmission unit also includes a second assembly, which passes through the second slot and is connected to the frame. The second driving member drives the second mounting plate to slide on the frame, and the second mounting member slides in the second slot and fixes the second mounting plate to the frame.

[0027] In one embodiment, at least one first through hole is provided on the top of the drive pulley, and the clamping unit includes:

[0028] A fixing plate is installed on the first mounting plate, and a groove is provided at the top of the fixing plate;

[0029] A clamping component includes a connecting rod, a fixing head, and a fixing rod disposed at the bottom end of the connecting rod. The fixing head is bent to one side to have a connecting end and a bent end, and the connecting end is rotatably disposed at the top of the connecting rod.

[0030] Two sets of limiting components are provided, and the two sets of limiting components are arranged sequentially from top to bottom on the fixed plate. The fixed rod passes through the limiting components and extends toward the drive pulley.

[0031] In the clamped state, the connecting end rotates until the bent end is parallel to the connecting rod, and the fixing rod extends downward into the first through hole. In the released state, the connecting end rotates until the bent end is perpendicular to the fixing plate and is confined within the groove, and the bottom of the fixing rod disengages from the first through hole.

[0032] In one embodiment, the clamping unit further includes an elastic element, which is sleeved on the outer periphery of the fixing rod and located between the two sets of limiting elements.

[0033] In one embodiment, the force measuring unit further includes a limiting plate, which is vertically mounted on the platform. In the pressed state, the end of the force-applying rod away from the driven pulley is connected to the limiting plate and the force-applying component, respectively, so that the straight direction of both ends of the force-applying rod is perpendicular to the tension direction of the force-applying component.

[0034] In one embodiment, the force-applying component includes:

[0035] A lead screw slide is mounted on the frame and driven to one end of the force gauge, while the other end of the force gauge is detachably connected to the force application rod.

[0036] A handwheel is located at the end of the lead screw slide away from the force-applying rod, and the handwheel is drivenly connected to the lead screw slide to adjust the position of the force gauge;

[0037] A lead screw fixing component is connected to the lead screw slide drive to fix the position of the force gauge.

[0038] In the technical solution of this invention, an active unit and a driven unit are arranged at both ends of the test bench. The active unit includes an active pulley, and the driven unit includes a driven pulley. The active pulley and the driven pulley are connected by a synchronous belt drive. Both the active unit and the driven unit are slidably connected to the test bench to adjust the tension of the synchronous belt and to adapt to synchronous belts of different lengths for testing the performance of synchronous belts of different lengths. The testing mechanism also includes a clamping unit and a force measuring unit. The clamping unit is connected to the active pulley on the test bench. The active pulley has a clamped state and a released state. In the clamped state, the clamping unit connects to the active pulley to restrict its rotation. When the active pulley is stationary, the synchronous belt cannot drive. The force measuring unit connects to the driven pulley and applies force to pull the driven pulley. Since the synchronous belt cannot drive, when the driven pulley is pulled, the synchronous belt will skip teeth. The invention records the force that causes the synchronous belt to skip teeth when the force measuring unit pulls the driven pulley. The skipping force of the synchronous belt is obtained by measuring the distance and tension between the force measuring unit and the driven pulley at the connection point. Furthermore, the tension of the synchronous belt is adjusted by sliding the driving unit on the test bench. The skipping force under different tension conditions and the skipping force of different synchronous belts are obtained through the clamping unit and the force measuring unit. In the deactivated state, the clamping unit is disconnected from the driving pulley, and the force measuring unit is not connected to the driven pulley. That is, the driven pulley can be connected to the synchronous belt through the driving pulley to drive its rotation. The transmission accuracy of the synchronous belt can be obtained based on the position data of the driving unit and the driven unit. This invention can comprehensively test the performance of synchronous belts and is applicable to synchronous belts of different lengths, making it widely applicable. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of an embodiment of the synchronous belt testing mechanism provided by the present invention;

[0041] Figure 2 This is a schematic diagram of another embodiment of the synchronous belt testing mechanism provided by the present invention;

[0042] Figure 3 This is a schematic diagram of another embodiment of the synchronous belt testing mechanism provided by the present invention;

[0043] Figure 4 This is a schematic diagram of the clamping state of the clamping unit in the synchronous belt testing mechanism provided by the present invention;

[0044] Figure 5 This is a schematic diagram of the released state of the compression unit in the synchronous belt testing mechanism provided by the present invention.

[0045] Explanation of icon numbers:

[0046] 100. Stand;

[0047] 200, Active unit; 210, Active pulley; 211, First through hole; 220, First mounting plate; 221, First slot; 230, Active motor; 240, First drive component; 250, First assembly;

[0048] 300. Driven unit; 310. Driven pulley; 311. Second connecting member; 320. Driven motor;

[0049] 400, clamping unit; 410, fixing plate; 411, groove; 420, clamping element; 421, connecting rod; 422, fixing head; 4221, connecting end; 4222, bent end; 423, fixing rod; 424, limiting ring; 430, limiting element; 431, connecting plate; 432, sleeve; 440, elastic element;

[0050] 500. Force measuring unit; 510. Force applying rod; 511. First connecting piece; 520. Lifting assembly; 521. Fixed base; 522. Lead screw nut assembly; 523. Connecting seat; 524. Connecting bolt; 525. Second handle; 530. Force applying assembly; 531. Lead screw slide; 532. Handwheel; 533. Lead screw fixing piece; 534. First handle; 540. Force gauge; 550. Limit plate;

[0051] 600, Transmission unit; 610, Encoder; 620, Second mounting plate; 621, Second slot; 630, First pulley; 640, Second pulley; 650, Second drive component; 660, Second assembly;

[0052] 700, First synchronous belt; 710, Second synchronous belt.

[0053] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0055] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0056] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0057] In the field of industrial robots, synchronous belts and pulleys are widely used. During use, synchronous belts and pulleys may experience tooth skipping due to some extreme conditions. In addition, when there are multiple stages of transmission, the transmission process may lose accuracy. Furthermore, the tensile strength, lifespan, accuracy between the synchronous belt and the pulley, tension of the synchronous belt, and anti-tooth skipping ability of the synchronous belt all have a significant impact on the use of industrial robots. However, the current testing fixtures for synchronous belts only test the fatigue strength, lifespan, and tensile strength of the synchronous belts, resulting in incomplete test data.

[0058] This invention proposes a synchronous belt testing mechanism.

[0059] Please see Figure 1 In one embodiment of the present invention, the synchronization band testing mechanism includes:

[0060] 100 units;

[0061] The active unit 200 is slidably mounted on the platform 100, and the active unit 200 includes an active pulley 210;

[0062] The driven unit 300 is mounted on the stand 100. The driven unit 300 includes a driven pulley 310, and the driving pulley 210 is connected to the driven pulley 310 by a synchronous belt.

[0063] A clamping unit 400 is provided on the stand 100. The clamping unit 400 is detachably connected to the drive pulley 210 so that the drive pulley 210 has a clamped state and a depressed state. In the clamped state, the clamping unit 400 is connected to the drive pulley 210 to restrict the rotation of the drive pulley 210. In the depressed state, the clamping unit 400 is disconnected from the drive pulley 210.

[0064] In the clamped state, the force measuring unit 500 drives the driven pulley 310 to rotate to detect the skipping force of the synchronous belt.

[0065] In the technical solution of this invention, an active unit 200 and a driven unit 300 are provided at both ends of the test bench 100. The active unit 200 includes an active pulley 210, and the driven unit 300 includes a driven pulley 310. The active pulley 210 and the driven pulley 310 are connected by a synchronous belt drive. Both the active unit 200 and the driven unit 300 are slidably connected to the test bench 100 to adjust the tension of the synchronous belt and to adapt to synchronous belts of different lengths, so as to test the performance of synchronous belts of different lengths; in addition, the testing machine... The structure also includes a clamping unit 400 and a force measuring unit 500. The clamping unit 400 is connected to the driving pulley 210 on the frame 100. The driving pulley 210 has a clamped state and a released state. In the clamped state, the clamping unit 400 connects to the driving pulley 210 to restrict its rotation. When the driving pulley 210 is stationary, the synchronous belt cannot drive. The force measuring unit 500 connects to the driven pulley 310 and applies force to pull the driven pulley 310. Since the synchronous belt cannot drive, when the driven pulley 310 is pulled... At time 0, a synchronous belt skipping phenomenon will occur. At this time, the force of the force measuring unit 500 pulling the driven pulley 310, causing the synchronous belt to skip, is recorded. The skipping force of the synchronous belt is obtained by measuring the distance between the force measuring unit 500 and the driven pulley 310, and the tension. Furthermore, the tension of the synchronous belt is adjusted by sliding the active unit 200 on the test bench 100. The skipping force under different tension conditions, as well as the skipping force of different synchronous belts, is obtained through the clamping unit 400 and the force measuring unit 500. Furthermore, in the released state, the clamping unit 400 is disconnected from the driving pulley 210, and the force measuring unit 500 is not connected to the driven pulley 310. That is, the driven pulley 310 can be connected to the driving pulley 210 via a synchronous belt to drive the driven pulley 310 to rotate. Based on the position data of the driving unit 200 and the position data of the driven unit 300, the transmission accuracy of the synchronous belt can be obtained. This invention can perform comprehensive performance testing on synchronous belts and is applicable to synchronous belts of different lengths, with a wide range of applications.

[0066] In an embodiment of the present invention, the synchronous belt testing mechanism further includes a transmission unit 600, which is slidably disposed on the stand 100 and located between the active unit 200 and the driven unit 300. The transmission unit 600 is connected to the active pulley 210 and the driven pulley 310 respectively, and the active pulley 210 drives the driven pulley 310 to rotate through the transmission unit 600. An encoder 610 is provided on the transmission unit 600 to read the position data of the transmission unit 600.

[0067] Please see Figure 1 and Figure 2The transmission unit 600 is slidably mounted on the stand 100 and connects the active unit 200 and the driven unit 300. The rotation of the active pulley 210 drives the transmission unit 600 to rotate, which in turn drives the driven pulley 310 to rotate. The transmission unit 600 simulates the multi-stage transmission on an industrial robot. An encoder 610 is installed on the transmission unit 600 to read the position data of the transmission unit 600. By comparing the position data of the active pulley 210 and the position data of the driven pulley 310, the accuracy loss of the synchronous belt is tested and determined. The position data of the driven pulley 310 is detected by the driven motor 320.

[0068] In an embodiment of the present invention, the transmission unit 600 includes:

[0069] The second mounting plate 620 is slidably mounted on the frame 100;

[0070] The first pulley 630 is rotatably mounted on the second mounting plate 620 and is connected to the drive pulley 210 via the first synchronous belt 700.

[0071] The second pulley 640 is coaxially connected to the first pulley 630, and the second pulley 640 is connected to the driven pulley 310 through the second synchronous belt 710;

[0072] The second drive member 650 is mounted on the stand 100 and is driven to connect with the second mounting plate 620. The second drive member 650 drives the second mounting plate 620 to move toward the end away from the driven unit 300 to increase the tension of the second synchronous belt 710.

[0073] Please see Figure 2The transmission unit 600 includes a second mounting plate 620, a first pulley 630, a second pulley 640, and a second driving member 650. The driving pulley 210 is connected to the first pulley 630 via a first synchronous belt 700, and the second pulley 640 is connected to the driven pulley 310 via a second synchronous belt 710. The first pulley 630 and the second pulley 640 are coaxially connected via a reduction unit shaft, so that the driving pulley 210 drives the driven pulley 310 to rotate via the first pulley 630 and the second pulley 640. An encoder 610 is connected to the reduction unit shaft to read the position data of the first pulley 630 and the second pulley 640. This position data is compared with the position data of the driving pulley 210 detected by the driving unit 200 and the position data of the driven pulley 310 detected by the driven unit 300 to obtain the position data of the first synchronous belt 700 and the second synchronous belt 710. The accuracy loss of 0 is detected. Additionally, a second mounting plate 620 is installed on the test bench 100. The reduction unit shaft is mounted on the test bench 100 via a reduction bearing seat. The first pulley 630 and the second pulley 640 are mounted on the second mounting plate 620 via the reduction unit shaft. A second driving member 650 is mounted on the test bench 100 and drivenly connected to the second mounting plate 620. The second driving member 650 drives the second mounting plate 620 to slide on the test bench 100 and move away from the driven unit 300, increasing the tension of the second synchronous belt 710. Similarly, the driving unit 200 moves away from the transmission unit 600, increasing the tension of the first synchronous belt 700. This allows for the detection of skipped teeth under different synchronous belt tensions. Furthermore, the positions of the driving unit 200 and the transmission unit 600 are adjustable, making it suitable for synchronous belts of different lengths, providing comprehensive testing.

[0074] In an embodiment of the present invention, the active unit 200 further includes:

[0075] The first mounting plate 220 is slidably mounted on the frame 100;

[0076] The active motor 230 is mounted on the first mounting plate 220 and is driven by the active pulley 210.

[0077] The first driving member 240 is disposed on the stand 100 and is drivenly connected to the first mounting plate 220. The first driving member 240 drives the first mounting plate 220 to move on the stand 100 in a direction away from the driven unit 300 to increase the tension of the first synchronous belt 700.

[0078] Please see Figure 1The active unit 200 also includes a first mounting plate 220, an active motor 230, and a first driving component 240. The active motor 230 is mounted on the bottom of the first mounting plate 220, and its output end is connected upward to the active pulley 210. The active motor 230 drives the active pulley 210 to rotate, and the first driving component 240 drives the first mounting plate 220 to move away from the driven unit 300 to increase the tension of the first synchronous belt 700. The optimal synchronous belt tension can be detected under different conditions, and the skipping force under different tensions can be detected by the force measuring unit 500. The detection is convenient. The position data of the active pulley 210 can be obtained from the active motor 230, and compared with the position data of the reduction unit shaft detected by the encoder 610 and the position data of the driven pulley 310 detected by the driven motor 320 to obtain the accuracy loss of the synchronous belt.

[0079] In an embodiment of the present invention, the first mounting plate 220 is provided with a first slot 221, the first slot 221 extends along the sliding direction of the first mounting plate 220, the active unit 200 further includes a first mounting part 250, the first mounting part 250 passes through the first slot 221 and is connected to the platform 100, the first driving member 240 drives the first mounting plate 220 to slide on the platform 100, and the first mounting plate 220 and the platform 100 are fixed by sliding in the first slot 221 through the first mounting part 250;

[0080] The second mounting plate 620 is provided with a second slot 621, which extends along the sliding direction of the second mounting plate 620. The transmission unit 600 also includes a second mounting accessory 660, which passes through the second slot 621 and is connected to the stand 100. The second driving member 650 drives the second mounting plate 620 to slide on the stand 100, and the second mounting accessory 660 slides in the second slot 621 and fixes the second mounting plate 620 to the stand 100.

[0081] Please see Figure 2A first slot 221 is provided on the first mounting plate 220, extending along the sliding direction of the first mounting plate 220 on the platform 100. Two rows of threaded holes are provided at intervals on both sides of the platform 100, with the threaded holes spaced in the sliding direction of the first mounting plate 220. A first mounting accessory 250 passes downward through the first slot 221 and one of the threaded holes in one row, and is fixedly connected to the platform 100. First synchronous belts 700 of different lengths are installed in threaded holes at different distances from the transmission unit 600 by the first mounting accessory 250 to fix the first mounting plate 220 and keep the first synchronous belts 700 taut. A first driving member 240 is installed in the other row of threaded holes to adjust the tension of the first synchronous belts 700. The first driving member 240 includes a first mounting base and a first driving end. The first mounting base is connected to the other row of threaded holes by screws. The end of the first driving end away from the transmission unit 600 passes through the first mounting base and abuts against the first mounting plate 220. The first drive end is threadedly connected to the first mounting base, and the other end of the first drive end is limited by the first mounting base. After the first mounting base and the first mounting accessory 250 are installed according to the length of the first synchronous belt 700, when it is necessary to adjust the tension of the first synchronous belt 700, the first drive end is turned so that the first drive end moves toward the first mounting plate 220. Since the first drive end abuts against the first mounting plate 220, the first drive end drives the first mounting plate 220 to move away from the transmission unit 600, so as to increase the tension of the first synchronous belt 700. Since the first slot 221 has a certain length along the sliding direction of the first mounting plate 220, when the first drive member 240 drives the first mounting plate 220 to move, the first mounting accessory 250 is turned so that the first slot 221 is in a flexible state. The first slot 221 moves with the first mounting plate 220, and the first mounting accessory 250 slides in the first slot 221. After reaching the required position, the first mounting accessory 250 is turned to fix the first mounting plate 220 and the frame 100.

[0082] Similarly, the second mounting plate 620 has a second slot 621 that extends along the moving direction of the transmission unit 600. The second mounting component 660 passes downward through the second slot 621 and one row of threaded holes, fixing the second mounting plate 620 to the stand 100. The second mounting component 660 is installed in threaded holes at different positions to accommodate second synchronous belts 710 of different lengths. The first mounting component 250 and the second mounting component 660 are used to accommodate first synchronous belts 700 and second synchronous belts 710 of different lengths, and to test the transmission accuracy of different synchronous belts. The second drive component 650 includes a second mounting base and a second drive end. The second mounting base is fixed to another row of threaded holes by screws. The end of the second drive end facing the second mounting plate 620 passes through the second mounting base and abuts against the second mounting plate 620. The moving end is threadedly connected to the second mounting base. When it is necessary to adjust the tension of the second synchronous belt 710, the second driving end is turned so that the second driving end moves toward the second mounting plate 620. The second driving end drives the second mounting plate 620 closer to the active unit 200 to increase the tension of the second synchronous belt 710. Since the second slot 621 has a certain length along the sliding direction of the second mounting plate 620, when the second driving member 650 drives the second mounting plate 620 to move, the second mounting accessory 660 is turned to release the fixed connection between the second slot 621 and the platform 100. The second slot 621 moves with the second mounting plate 620, and the second mounting accessory 660 slides in the second slot 621. After the second mounting plate 620 reaches the required position, the second mounting accessory 660 is turned to fix the connection between the second mounting plate 621 and the platform 100.

[0083] The first drive end and the second drive end can be configured as bolts, and the first assembly 250 and the second assembly 660 can be configured as screws.

[0084] In an embodiment of the present invention, at least one first through hole 211 is provided on the top of the drive pulley 210, and the clamping unit 400 includes:

[0085] A fixing plate 410 is installed on the first mounting plate 220, and a groove 411 is provided at the top of the fixing plate 410;

[0086] The clamping member 420 includes a connecting rod 421, a fixing head 422 and a fixing rod 423 disposed at the bottom end of the connecting rod 421. The fixing head 422 is bent to one side to have a connecting end 4221 and a bent end 4222. The connecting end 4221 is rotatably disposed at the top of the connecting rod 421.

[0087] Two sets of limiting members 430 are provided, and the two sets of limiting members 430 are arranged sequentially from top to bottom on the fixing plate 410. The fixing rod 423 passes through the limiting member 430 and extends toward the driving pulley 210.

[0088] In the pressed state, the connecting end 4221 rotates until the bent end 4222 is parallel to the connecting rod 421, and the fixing rod 423 extends downward into the first through hole 211. In the released state, the connecting end 4221 rotates until the bent end 4222 is perpendicular to the fixing plate 410 and is confined within the groove 411, and the bottom of the fixing rod 423 disengages from the first through hole 211.

[0089] Please see Figure 4 and Figure 5 A fixing plate 410 is disposed on the first mounting plate 220 to fix the limiting member 430. A groove 411 is provided on the top of the fixing plate 410. The clamping member 420 includes a connecting rod 421, a fixing head 422, and a fixing rod 423. The connecting rod 421 is horizontally disposed. Two fixing rods 423 are provided and are installed at the bottom ends of the connecting rod 421. The fixing head 422 is disposed on the top of the connecting rod 421 and is bent to one side to have a bent end 4222 and a connecting end 4221. The connecting end 4221 is rotatably connected to the connecting rod 421. Two limiting members 430 are disposed on one side of the fixing plate 410 from top to bottom. The limiting member 430 includes a connecting plate 431 and sleeves 432 at both ends of the connecting plate 431. The connecting plate 431 is installed on the fixing plate 410. The connecting rod 421 is above the limiting member 430. The fixing rods 423 on both sides are bent to one side. The sleeves 432 of the two limiting members 430 pass through the drive pulley 210 in sequence. The first through hole 211 is provided on the drive pulley 210. The first through hole 211 is adapted to the fixed rod 423. In the clamping state, the connecting end 4221 rotates and the bent end 4222 is parallel to the connecting rod 421. The connecting rod 421 moves downward under the influence of gravity and is limited by the sleeves 432 of the upper limiting member 430. The fixed rod 423 moves downward and extends into the first through hole 211, restricting the rotation of the drive pulley 210. Then, the skipping force is detected by the force measuring unit 500. In the released state, the connecting rod 421 is pulled upward and the connecting end 4221 is rotated so that the bent end 4222 is perpendicular to the connecting rod 421. The bent end 4222 is limited in the groove 411 to prevent the clamping member 420 from falling. The fixed rod 423 is disengaged from the first through hole 211, that is, the drive pulley 210 can rotate under the drive of the drive motor 230.

[0090] In an embodiment of the present invention, the compression unit 400 further includes an elastic element 440, which is sleeved on the outer periphery of the fixing rod 423 and located between the two sets of limiting elements 430.

[0091] Please see Figure 4 and Figure 5An elastic element 440 is provided on the outer periphery of the fixed rod 423, and the elastic element 440 is located between the upper and lower sleeves 432. The outer periphery of the fixed rod 423 also has a limiting ring 424, which is between the elastic element 440 and the lower sleeve 432. When in the released state, the fixed rod 423 moves upward and is limited in the groove 411 by the bent end 4222, so that the limiting ring 424 moves upward and compresses the elastic element 440. When it is necessary to switch to the pressed state, the connecting end 4221 is rotated, the bent end 4222 is disengaged from the groove 411, and the fixed rod 423 moves downward under the elastic force of the elastic element 440 and extends into the first through hole 211 to improve reliability. The number of first through holes 211 is the same as the number of fixed rods 423, that is, two first through holes 211 are provided.

[0092] Specifically, the elastic element 440 can be a spring.

[0093] In an embodiment of the present invention, the driven pulley 310 has a second connecting member 311, and the force measuring unit 500 includes:

[0094] The force-applying rod 510 is provided with a first connector 511, and the first connector 511 and the second connector 311 are detachably connected.

[0095] The lifting assembly 520 is mounted on the platform 100 and connected to the force-applying rod 510. The lifting assembly 520 drives the force-applying rod 510 to move in the vertical direction.

[0096] The force application component 530 is mounted on the platform 100 and is detachably connected to the end of the force application rod 510 away from the driven pulley 310;

[0097] A force gauge 540 is installed in the force application component 530 and is used to measure the tension of the force application component 530;

[0098] In the released state, the lifting assembly 520 drives the force rod 510 to rise to disengage from the driven pulley 310, and the force application assembly 530 disengages from the force rod 510; in the pressed state, the lifting assembly 520 drives the force rod 510 to fall to connect the first connecting member 511 and the second connecting member 311, and the force application assembly 530 drives the force rod 510 to move in the direction of the force application assembly 530 to rotate the driven pulley 310.

[0099] Please see Figure 3A lifting assembly 520 is mounted on the platform 100 and drives the force-applying rod 510 to rise and fall. A first connecting member 511 is located at the bottom of the force-applying rod 510, and a second connecting member 311 is located on the driven pulley 310. The first connecting member 511 and the second connecting member 311 cooperate with each other. One end of the force-applying rod 510 is located directly above the driven pulley 310, and the other end extends radially outward along the driven pulley 310. A force-applying assembly 530 is mounted on the platform 100, and a force gauge 540 is located at the drive end of the force-applying assembly 530. The force-applying assembly 530 is detachably connected to the force-applying rod 510 via the force gauge 540. Next, when it is necessary to detect the skipping force, the device is in a compressed state. The lifting assembly 520 drives the force application rod 510 to descend, so that the first connecting piece 511 and the second connecting piece 311 are connected. The force application assembly 530 connects the end of the force application rod 510 away from the driven pulley 310 and pulls the driven pulley 310 through the force application rod 510. The tension when the second synchronous belt 710 skips a tooth is recorded by the force gauge 540. When it is not necessary to measure the skipping force, the force gauge 540 is disconnected from the force application rod 510, the lifting assembly 520 drives the force application rod 510 to rise, and the first connecting piece 511 and the second connecting piece 311 are disengaged.

[0100] The first connector 511 is configured as a boss, and the second connector 311 is configured as a second through hole. The boss is located at the bottom of the force-applying rod 510, and at least one is provided. The second through hole is located at the top of the driven pulley 310, and at least one is provided. Each boss corresponds to one second through hole. In addition, the force gauge 540 is connected to the force-applying rod 510 through a steel wire rope.

[0101] In an embodiment of the present invention, the force measuring unit 500 further includes a limiting plate 550, which is vertically mounted on the stand 100. In the pressed state, one end of the force applying rod 510 away from the driven pulley 310 is connected to the limiting plate 550 and the force applying component 530 respectively, so that the straight direction of both ends of the force applying rod 510 is perpendicular to the tension direction of the force applying component 530.

[0102] Please see Figure 3 The limiting plate 550 is mounted on the stand 100 and extends vertically upward. The limiting plate 550 can be made of metal. A limiting groove is set on the force-applying rod 510, and a magnet is set in the limiting groove. The magnet can magnetically attract the limiting plate 550. When it is necessary to measure the skipping force, the force-applying rod 510 descends, one end is connected to the driven pulley 310, and the other end is magnetically attracted to the limiting plate 550. At this time, the force-applying component 530 is connected to the other end of the force-applying rod 510 through the force gauge 540. The force-applying rod 510 is perpendicular to the direction of force. Therefore, when calculating the skipping force, the angle between the force-applying rod 510 and the direction of force does not need to be considered, which is convenient for calculating the skipping force when the synchronous belt skips teeth. That is, the skipping force is equal to the tension measured by the force gauge 540 multiplied by the distance between the end of the force-applying rod 510 connected to the force gauge 540 and the axis of the driven pulley 310.

[0103] In an embodiment of the present invention, the force-applying component 530 includes:

[0104] The lead screw slide 531 is mounted on the frame 100 and is driven by the force gauge 540. The other end of the force gauge 540 is detachably connected to the force rod 510.

[0105] Handwheel 532 is located at the end of lead screw slide 531 away from force bar 510. Handwheel 532 is driven to be connected to lead screw slide 531 to adjust the position of force gauge 540.

[0106] The lead screw fixing component 533 is drivenly connected to the lead screw slide 531 to fix the position of the force gauge 540.

[0107] Please see Figure 3 The force application component 530 includes a lead screw slide 531, a handwheel 532, and a lead screw fixing member 533. The lead screw slide 531 includes a lead screw and a slide. The lead screw is threadedly connected to the slide. The input end of the lead screw is provided with a handwheel 532, which drives the lead screw to rotate. The lead screw fixing member 533 is located at the end of the lead screw near the handwheel 532, and the lead screw fixing member 533 is connected to a first handle 534. The force gauge 540 is fixed on the slide. By rotating the handwheel 532, the lead screw is rotated, thereby adjusting the position of the slide so that the slide is away from the force application rod 510. After rotating to a certain position, by rotating the first handle 534, the lead screw fixing member 533 fixes the lead screw, thereby fixing the position of the slide and providing a stable and lasting pulling force to the driven pulley 310.

[0108] Additionally, the lifting assembly 520 includes a fixed base 521, a lead screw nut 522, a bearing, a connecting seat 523, a connecting bolt 524, and a second handle 525. The fixed base 521 is mounted on the platform 100 and extends vertically. The lead screw nut 522 is mounted on the fixed base 521, and its output end is connected to one end of the force-applying rod 510 through a bearing and a bearing seat. The force-applying rod 510 is driven to rise and fall by the lead screw nut 522. A connecting seat 523 is provided on the lead screw nut 522, and the lead screw passes through the connecting seat 523. A connecting bolt 524 is provided on the connecting seat 523. The connecting bolt 524 is rotated by the second handle 525 to lock the connecting seat 523 and fix the lead screw. When it is not necessary to test the skipping force, the force-applying rod 510 is driven to rise by the lead screw nut 522, and the lead screw is fixed by locking the connecting seat 523 by the second handle 525.

[0109] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A synchronous belt testing mechanism characterized by, The application relates to a synchronous belt tensioning device, which comprises a rack, a driving unit, a driven unit, a transmission unit, a pressing unit, a force measuring unit, a lifting assembly and a force applying assembly. The driving unit is arranged on the rack and comprises a driving pulley. The driven unit is arranged on the rack and comprises a driven pulley. The transmission unit is arranged on the rack and located between the driving unit and the driven unit. The transmission unit is in driving connection with the driving pulley and the driven pulley. The transmission unit drives the driven pulley to rotate in the pressing state. The pressing unit is arranged on the rack and detachably connected with the driving pulley. The pressing unit is connected with the driving pulley in the pressing state to limit the rotation of the driving pulley. The pressing unit is disconnected from the driving pulley in the releasing state. The force measuring unit drives the driven pulley to rotate to detect the tooth skipping force of the synchronous belt in the pressing state. The force measuring unit comprises a force applying rod, a lifting assembly and a force applying assembly. The lifting assembly is arranged on the rack and connected with the force applying rod.

2. The synchronous belt testing mechanism of claim 1, wherein, The lifting assembly drives the force applying rod to move in the vertical direction. The force applying assembly is arranged on the rack and detachably connected with the force applying rod. The force applying assembly is arranged on the force applying rod. The lifting assembly drives the force applying rod to ascend to disconnect from the driven pulley in the releasing state. The force applying assembly is disconnected from the force applying rod in the releasing state.

3. The synchronous belt testing mechanism of claim 2, wherein, The lifting assembly drives the force applying rod to descend to connect the first connecting member and the second connecting member in the pressing state. The force applying assembly drives the force applying rod to move towards the force applying assembly to rotate the driven pulley. The transmission unit comprises a second mounting plate, a first pulley, a second pulley and a second driving member. The second mounting plate is arranged on the rack. The first pulley is arranged on the second mounting plate and connected with the driving pulley through a first synchronous belt. The second pulley is coaxially connected with the first pulley and connected with the driven pulley through a second synchronous belt. The second driving member is arranged on the rack and in driving connection with the second mounting plate. The second driving member drives the second mounting plate to move away from the driven unit to increase the tension of the second synchronous belt. The driving unit further comprises a first mounting plate, a driving motor and a first driving member. The first mounting plate is arranged on the rack. The driving motor is arranged on the first mounting plate and in driving connection with the driving pulley. The first driving member is arranged on the rack and in driving connection with the first mounting plate. The first driving member drives the first mounting plate to move away from the driven unit to increase the tension of the first synchronous belt.

4. The synchronous belt testing mechanism of claim 3, wherein, The first installation plate is provided with a first slot hole extending along the sliding direction of the first installation plate, the driving unit further comprises a first assembly member, the first assembly member is connected with the rack through the first slot hole, the first driving member drives the first installation plate to slide on the rack, and the first installation plate is fixed with the rack by sliding and fixing the first assembly member in the first slot hole; The second installation plate is provided with a second slot hole extending along the sliding direction of the second installation plate, the transmission unit further comprises a second assembly member, the second assembly member is connected with the rack through the second slot hole, the second driving member drives the second installation plate to slide on the rack, and the second installation plate is fixed with the rack by sliding and fixing the second assembly member in the second slot hole.

5. The synchronous belt testing mechanism of claim 3, wherein, At least one first through hole is provided at the top of the driving pulley, and the pressing unit comprises: A fixed plate is installed on the first installation plate, and a recess is provided at the top end of the fixed plate; The pressing member comprises a connecting rod, a fixed head and a fixed rod provided at the bottom end of the connecting rod, the fixed head is bent towards one side to have a connecting end and a bent end, and the connecting end is rotationally arranged at the top of the connecting rod; Two sets of limiting members are arranged in sequence from top to bottom on the fixed plate, and the fixed rod extends towards the driving pulley through the limiting members; In the pressing state, the connecting end is rotated to be parallel to the bent end of the connecting rod, and the fixed rod extends into the first through hole, and in the releasing state, the connecting end is rotated to be perpendicular to the fixed plate and is limited in the recess, and the bottom of the fixed rod is separated from the first through hole.

6. The synchronous belt testing mechanism of claim 5, wherein, The pressing unit further comprises an elastic member, the elastic member is sleeved on the outer periphery of the fixed rod and located between the two sets of limiting members.

7. The synchronous belt testing mechanism of claim 1, wherein, The force measuring unit further comprises a limiting plate, the limiting plate is vertically installed on the rack, in the pressing state, one end of the force applying rod away from the driven pulley is connected with the limiting plate and the force applying assembly respectively, so that the two ends of the force applying rod are perpendicular to the tension direction of the force applying assembly.

8. The synchronous belt testing mechanism of claim 7, wherein, The force applying assembly comprises: A lead screw sliding table is installed on the rack and drivingly connected with one end of the force gauge, and the other end of the force gauge is detachably connected with the force applying rod; A hand wheel is arranged at one end of the lead screw sliding table away from the force applying rod, the hand wheel is drivingly connected with the lead screw sliding table to adjust the position of the force gauge; A lead screw fixing member is drivingly connected with the lead screw sliding table to fix the position of the force gauge.

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