A safety-type generator load testing device and testing method

Abstract

The application relates to the technical field of generators, in particular to a safe generator load testing device and testing method, which comprises a workbench, a side plate, a bottom plate, a belt and a generator body, a supporting wheel is movably arranged on the inner side of the belt, an adjusting supporting mechanism is arranged between the supporting wheel and the side plate, an extrusion wheel movably connected with the belt is movably arranged on the side edge of the side plate, a fracture extrusion mechanism is arranged between the extrusion wheel and the adjusting supporting mechanism, a horizontal displacement mechanism is arranged on the generator body, and the fracture extrusion mechanism and the horizontal displacement mechanism are cooperatively arranged. When the belt is broken, the horizontal displacement mechanism, the extrusion wheel and the auxiliary wheel are rapidly extruded by the fracture extrusion mechanism under the action of the second tension spring, the auxiliary wheel is tightly attached to the belt by combining the spring in the straight groove with the slide rod, the belt is limited on the workbench surface, and the high-speed swinging of the belt is prevented.

Description

Technical Field

[0001] This invention relates to the field of generator technology, specifically to a safe generator load testing device and testing method. Background Technology

[0002] In automotive electrical systems, the generator is a core power supply component, undertaking the dual functions of supplying power to onboard electrical equipment and charging the battery. Its performance stability directly determines the vehicle's driving safety and the reliability of the electrical system. As automotive technology upgrades towards electrification and intelligence, the number and power of onboard electrical equipment have increased significantly, such as auxiliary motors and autonomous driving sensors in new energy vehicles. This places higher demands on the generator's output voltage stability, load adaptability, and long-term operational durability.

[0003] Currently, most mainstream generator load testing devices use belt drive to operate during the testing phase. By collecting key performance values ​​such as resistance, current, and voltage of the generator during operation, they can complete the testing and evaluation of the generator's output performance. This method is widely used in traditional testing scenarios and has become a common solution for generator load testing.

[0004] However, this testing method has significant safety and equipment risks. In actual testing, the testing belt is prone to breakage due to factors such as belt material aging, sudden changes in transmission load, and improper installation tension. A broken belt will swing rapidly under high-speed operation, which may not only directly hit the surrounding operators, causing personnel scratches, impacts, and other safety accidents, but may also cause mechanical failures such as generator jamming and rotor deformation due to the broken end wrapping around the rotating parts of the generator body, thereby causing damage to the generator body, increasing equipment maintenance costs and safety risks. Therefore, we propose a safe generator load testing device and testing method. Summary of the Invention

[0005] One of the technical problems to be solved in this application is: how to design a safe generator load testing device and testing method that avoids injury to personnel and motor when the belt breaks.

[0006] To address the aforementioned technical problems, this application provides a safe generator load testing device and method, comprising a workbench, side plates, a base plate, a belt, and a generator body. A support wheel is movably disposed on the inner side of the belt, and an adjusting support mechanism is disposed between the support wheel and the side plate for driving the support wheel to install the belt onto the output end of the generator body. A pressing wheel, movably connected to the belt, is movably disposed on the side of the side plate, and a breaking pressing mechanism is disposed between the pressing wheel and the adjusting support mechanism. A horizontal displacement mechanism is disposed on the generator body for quickly driving the generator body away from the belt when the belt breaks.

[0007] The breaking and extrusion mechanism includes a shaft inside the extrusion wheel, and a movable clamp is provided at the end of the shaft. An auxiliary wheel that is movably disposed inside the movable clamp and fits against the outer side of the belt is also provided.

[0008] Both sides of the movable clamp are provided with straight grooves. A slide rod is movably arranged on the inner side of the auxiliary wheel. The outer side of the slide rod is movably arranged on the inner side of the straight groove. A spring connected to the slide rod is provided on the inner side of both straight grooves. A support plate is provided on the outer side of the side plate. A straight rod is provided on the side of the movable clamp. A contact plate is provided at the end of the straight rod and makes movable contact with the side of the support plate.

[0009] In some embodiments, the adjusting support mechanism includes a rotating rod disposed inside the support wheel, an L-shaped plate disposed at the end of the rotating rod, a sliding groove movably connected to the L-shaped plate being provided on the side of the side plate, a top plate disposed on the side of the side plate, a connecting plate disposed on the side of the side plate, a threaded rod movably disposed between the top plate and the connecting plate, the L-shaped plate being threadedly connected to the outside of the threaded rod, and a handwheel being disposed at the bottom end of the threaded rod penetrating the connecting plate.

[0010] In some embodiments, a mounting bracket is provided on the side of the side plate, a light rod is provided on the inner side of the mounting bracket, a transverse sliding plate connected to a movable clamp is movably sleeved on the outer side of the light rod, and a tension spring is sleeved on the outer side of the light rod, with the two ends of the tension spring respectively located on the inner side of the transverse sliding plate and the mounting bracket.

[0011] In some embodiments, the horizontal displacement mechanism includes a support arc plate movably disposed on the outside of the generator body, a slider disposed on the outside of the support arc plate, a movable frame disposed on the top of the slider, and a slotted plate movably connected to the slider disposed on the top of the worktable.

[0012] In some embodiments, a tension spring is provided between the inner side of the slotted plate and the slider, a support frame is provided on the top of the worktable, a cylinder is provided on the top of the support frame, a push plate that is in movable contact with the generator body is provided at the output end of the cylinder, a screw is provided on the internal thread of the movable frame, an extrusion arc plate that fits against the generator body is movably provided at the bottom end of the screw, and a rotating disk is provided at the top end of the screw.

[0013] In some embodiments, a connecting rod is provided on the side of the movable clamp, an inclined block is provided at the bottom of the connecting rod, a wedge is provided on the side of the slider, and the inclined surface of the inclined block is movably disposed on the inclined surface of the wedge.

[0014] This application also provides a method for testing the load of a safety-type generator, including the following steps:

[0015] S1: Place the generator body on top of the arc plate, and then drive the screw to move by rotating the rotating disk, so that the inner side of the arc plate at the bottom of the screw is pressed against the outer side of the generator body, thereby completing the limiting and fixing of the generator body. Finally, the generator body enters the detection area by pushing the push plate at the output end of the cylinder.

[0016] S2: By rotating the handwheel, the L-shaped plate on the outside of the threaded rod is lowered. The L-shaped plate will drive the rotating rod and the support wheel to lower, so that the belt is fitted onto the output end of the generator body. Then, by rotating the handwheel, the L-shaped plate and the support wheel are reset, thus completing the installation of the belt.

[0017] S3: When a belt breakage is detected during generator body inspection, tension spring 2 will pull the transverse plate to quickly reset, and at the same time the contact plate will move away from the support plate. The spring will drive the threaded rod and auxiliary wheel to reset, so that the broken belt is clamped between the compression wheel and the auxiliary wheel, preventing the output end of the generator body from getting tangled in the belt, thereby protecting the generator body and personnel safety.

[0018] This invention has at least the following beneficial effects:

[0019] 1. Through the coordinated action of the fracture extrusion mechanism and the horizontal displacement mechanism, when the belt breaks, the transverse plate in the fracture extrusion mechanism drives the extrusion wheel and the auxiliary wheel to quickly extrude the belt under the action of the tension spring. Combined with the spring in the straight groove pushing the slide rod to make the auxiliary wheel stick tightly to the belt, the belt is limited to the worktable to prevent it from swinging at high speed and injuring people. In addition, the horizontal displacement mechanism will drive the generator body to move quickly to the side away from the broken belt. Therefore, it can fully protect the safety of personnel and the integrity of the generator body.

[0020] 2. The adjustable support mechanism simplifies the belt installation process and enhances adaptability. Turning the handwheel drives the threaded rod to rotate, causing the L-shaped plate to move up and down along the slide groove, thereby adjusting the height of the support wheel to lower. The support wheel can easily put the belt onto the generator output end, and raising the support wheel can quickly complete the belt tensioning without the need for complicated tools for disassembly and assembly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the generator body, mounting frame, and polished rod of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the side, top plate, threaded rod, and handwheel of the present invention;

[0024] Figure 4 This is a schematic diagram of the mounting bracket, tension spring 2, and fracture compression mechanism of the present invention;

[0025] Figure 5 This is a schematic diagram of the fracture extrusion mechanism of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the spring, straight rod, and contact plate of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the movable clamp, connecting rod, and wedge block of the present invention;

[0028] Figure 8 This is an exploded structural diagram of the movable frame, generator body, and slotted plate of the present invention.

[0029] In the diagram: 1. Workbench; 2. Side plate; 3. Base plate; 4. Belt; 5. Extrusion roller; 6. Support roller; 7. Fracture extrusion mechanism; 71. Support plate; 72. Auxiliary roller; 73. Moving clamp; 74. Shaft; 75. Contact plate; 76. Slide rod; 77. Straight groove; 78. Spring; 79. Straight rod; 8. Horizontal displacement mechanism; 81. Connecting rod; 82. Inclined block; 83. Wedge block; 84. Support frame; 85. Cylinder; 86. Push plate; 87. 88. Moving frame; 89. Rotating disk; 810. Screw; 811. Extruded arc plate; 812. Slotted plate; 813. Tension spring one; 814. Supporting arc plate; 815. Slider; 916. Adjusting support mechanism; 91. Mounting bracket; 92. Tension spring two; 93. Smooth rod; 94. Top plate; 95. Slide groove; 96. Threaded rod; 97. Handwheel; 98. L-shaped plate; 99. Connecting plate; 910. Rotating rod; 911. Horizontal sliding plate; 10. Generator body. Detailed Implementation

[0030] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example: Please refer to Figures 1-8The present invention provides a technical solution: a safe generator load testing device and testing method, including a workbench 1, a side plate 2, a base plate 3, a belt 4 and a generator body 10. A support wheel 6 is movably arranged on the inner side of the belt 4. An adjusting support mechanism 9 is arranged between the support wheel 6 and the side plate 2 for driving the support wheel 6 to install the belt 4 to the output end of the generator body 10. A pressing wheel 5 is movably arranged on the side of the side plate 2 and movably connected to the belt 4. A breaking pressing mechanism 7 is arranged between the pressing wheel 5 and the adjusting support mechanism 9 for quickly limiting the belt 4 on the workbench 1 when the belt 4 breaks. A horizontal displacement mechanism 8 is arranged on the generator body 10 for quickly driving the generator body 10 away from the belt 4 when the belt 4 breaks.

[0032] The breaking and extrusion mechanism 7 includes a shaft 74 inside the extrusion wheel 5. A movable clamp 73 is provided at the end of the shaft 74. An auxiliary wheel 72 is movably arranged inside the movable clamp 73 and fits against the outer side of the belt 4. The auxiliary wheel 72 is in close contact with the surface of the belt 4. It can provide auxiliary support when the belt 4 is running normally, and can also cooperate with the extrusion wheel 5 to clamp and limit the belt 4 when the belt 4 breaks. Through the linkage between the shaft 74 and the movable clamp 73, it is ensured that the extrusion wheel 5 can respond quickly and form an effective constraint on the broken belt 4.

[0033] Both sides of the movable clamp 73 are provided with straight grooves 77. A slide rod 76 is movably arranged inside the auxiliary wheel 72, and the outer side of the slide rod 76 is movably arranged inside the straight groove 77. A spring 78 connected to the slide rod 76 is provided inside the two straight grooves 77. A support plate 71 is provided inside the mounting frame 91. A straight rod 79 is provided on the side of the movable clamp 73. The end of the straight rod 79 is provided with a contact plate 75 that movably contacts the side of the support plate 71. The spring 78 always applies elastic force to the slide rod 76, so that the auxiliary wheel 72 is tightly attached to the surface of the belt 4. Even if the belt 4 jumps slightly during operation, the auxiliary wheel 72 can adjust its position in time under the action of the spring 78 to ensure the fit with the belt 4. The support plate 71 inside the mounting frame 91 cooperates with the contact plate 75 on the side of the movable clamp 73 to limit the movement range of the movable clamp 73 and ensure the stable operation of the mechanism.

[0034] The adjusting support mechanism 9 includes a rotating rod 910 disposed inside the support wheel 6. An L-shaped plate 98 is disposed at the end of the rotating rod 910. A sliding groove 95 is provided on the side of the side plate 2 and is movably connected to the L-shaped plate 98. A top plate 94 is disposed on the side of the side plate 2. A connecting plate 99 is disposed on the side of the side plate 2. A threaded rod 96 is movably disposed between the top plate 94 and the connecting plate 99. The L-shaped plate 98 is threaded to the outside of the threaded rod 96. A handwheel 97 is disposed at the bottom end of the threaded rod 96 through the connecting plate 99. Through the sliding cooperation between the L-shaped plate 98 and the sliding groove 95, the lifting trajectory of the rotating rod 910 can be precisely controlled, thereby driving the support wheel 6 to move stably. This provides a reliable position adjustment capability for the installation and tensioning of the belt 4, ensuring that the belt 4 can be accurately fitted onto the output end of the generator body 10.

[0035] When the handwheel 97 is turned, the threaded rod 96 rotates around its own axis. Using the thread transmission principle, the L-shaped plate moves axially along the threaded rod 96, which enables convenient adjustment of the height of the support wheel 6. The operation can be completed without complicated tools, improving the convenience of belt 4 installation.

[0036] A mounting bracket 91 is provided on the side of the side plate 2. A guide rod 93 is provided on the inner side of the mounting bracket 91. A transverse plate 911 connected to the moving clamp 73 is movably sleeved on the outer side of the guide rod 93. A tension spring 92 is sleeved on the outer side of the guide rod 93. The two ends of the tension spring 92 are respectively located on the inner side of the transverse plate 911 and the mounting bracket 91. The guide rod 93 provides guidance for the movement of the transverse plate 911, ensuring that the transverse plate 911 slides smoothly along a straight line. The tension spring 92 provides the reset power for the transverse plate 911. When the belt 4 breaks or needs adjustment, the tension spring 92 can drive the transverse plate 911 to quickly return to the initial position, preparing for subsequent operations.

[0037] The horizontal displacement mechanism 8 includes a support arc plate 813 movably disposed on the outside of the generator body 10, a slider 814 disposed on the outside of the support arc plate 813, a movable frame 87 disposed on the top of the slider 814, and a slotted plate 811 movably connected to the slider 814 disposed on the top of the worktable 1.

[0038] A tension spring 812 is provided between the inner side of the slotted plate 811 and the slider 814. A support frame 84 is provided on the top of the worktable 1. A cylinder 85 is provided on the top of the support frame 84. A push plate 86 that is in movable contact with the generator body 10 is provided at the output end of the cylinder 85. A screw 89 is provided on the internal thread of the moving frame 87. An extrusion arc plate 810 that fits against the generator body 10 is movably provided at the bottom end of the screw 89. A rotating disk 88 is provided at the top end of the screw 89.

[0039] A connecting rod 81 is provided on the side of the movable clamp 73, and an inclined block 82 is provided at the bottom of the connecting rod 81. A wedge block 83 is provided on the side of the slider 814. The inclined surface of the inclined block 82 is movably disposed on the inclined surface of the wedge block 83. The supporting arc plate 813 can fit against the outer surface of the generator body 10 to provide stable support for the generator body 10. The sliding cooperation between the slider 814 and the slotted plate 811 provides guidance for the horizontal movement of the generator body 10, ensuring that the generator body 10 can quickly move away from the broken belt 4 along the preset trajectory to avoid equipment damage.

[0040] This application also provides a method for testing the load of a safety-type generator, including the following steps:

[0041] S1: Place the generator body 10 on top of the arc plate 813, and then drive the screw 89 to move by rotating the rotating disk 88, so that the inner side of the pressing arc plate 810 at the bottom of the screw 89 fits against the outer side of the generator body 10, thereby completing the limiting and fixing of the generator body 10. Finally, the generator body 10 is pushed into the detection area by the pusher plate 86 at the output end of the cylinder 85.

[0042] S2: By rotating the handwheel 97, the L-shaped plate 98 on the outside of the threaded rod 96 is lowered. The L-shaped plate 98 will drive the rotating rod 910 and the support wheel 6 to lower, so that the belt 4 is fitted onto the output end of the generator body 10. Then, by rotating the handwheel 97, the L-shaped plate 98 and the support wheel 6 are reset, thus completing the installation of the belt 4.

[0043] S3: When the generator body 10 detects that the belt 4 has broken, the tension spring 92 will pull the transverse plate 911 to quickly reset, and the contact plate 75 will also move away from the support plate 71. At this time, the spring 78 will drive the threaded rod 96 and the auxiliary wheel 72 to reset, so that the broken belt 4 is clamped between the compression wheel 5 and the auxiliary wheel 72, preventing the output end of the generator body 10 from getting tangled in the belt 4, thereby protecting the generator body 10 and personnel safety.

[0044] Working principle: When using this device, first place the generator body 10 on the slider 814. Rotate the rotating disk 88 to drive the screw 89 to rotate. The screw 89 will drive the extrusion arc plate 810 to extrude the generator body 10. At this time, start the cylinder 85. The cylinder 85 drives the push plate 86 to move. The push plate 86 drives the generator body 10 to move. The generator body 10 will drive the slider 814 to slide inside the slotted plate 811 and pull the tension spring 812 to deform it. At this time, the wedge block 83 will approach the inclined block 82. Then the cylinder 85 and the push plate 86 will reset.

[0045] Then, belt 4 is fitted onto the output end of generator body 10. At this time, rotating handwheel 97 drives threaded rod 96 to rotate. Threaded rod 96 drives L-shaped plate 98 to slide inside slide groove 95. Slide groove 95 drives rotating rod 910 to move. Rotating rod 910 drives support wheel 6 to rise. At this time, belt 4 pulls auxiliary wheel 72 to move. Auxiliary wheel 72 drives transverse plate 911 to slide on the outer surface of smooth rod 93 and causes tension spring 92 to deform. When moving clamp 73 moves, it drives straight rod 79 and contact plate 75 to move, so that contact plate 75 contacts the side of support plate 71, causing moving clamp 73 to move. And through auxiliary wheel 72 and slide rod 76, spring 78 is deformed. At this time, generator body 10 is tested.

[0046] During testing, when belt 4 breaks, the transverse plate 911 will quickly reset under the action of tension spring 92. At this time, spring 78, without the limit of contact plate 75, will also quickly reset, causing the moving clamp 73 to drive the shaft 74 to move. The shaft 74 will drive the compression wheel 5 to quickly approach the auxiliary wheel 72 to compress the broken belt 4 and prevent it from being thrown out. At this time, the connecting rod 81 will also move quickly, and the connecting rod 81 will drive the inclined block 82 away from the inclined surface of the wedge block 83. At this time, tension spring 812 will quickly reset, causing the slider 814 to slide inside the slotted plate 811, so that the generator body 10 is away from the broken belt 4, thereby preventing the broken belt 4 from getting tangled on the output end of the generator body 10.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A safety generator load testing device comprising a workbench (1), a side plate (2), a bottom plate (3), a belt (4) and a generator body (10), characterized in that: The inner side of the belt (4) is movably provided with a supporting wheel (6), and an adjusting supporting mechanism (9) is arranged between the supporting wheel (6) and the side plate (2), which is used for installing the belt (4) to the output end of a generator body (10) by driving the supporting wheel (6), and the side edge of the side plate (2) is movably provided with a squeezing wheel (5) movably connected with the belt (4), and a breaking squeezing mechanism (7) is arranged between the squeezing wheel (5) and the adjusting supporting mechanism (9), and a horizontal displacement mechanism (8) is arranged on the generator body (10), which is used for quickly driving the generator body (10) away from the belt (4) when the belt (4) is broken; The breaking squeezing mechanism (7) comprises a shaft rod (74) in the inner side of the squeezing wheel (5), and the end of the shaft rod (74) is provided with a moving clamp (73), and the inner side of the moving clamp (73) is movably provided with an auxiliary wheel (72) abutting the outer side of the belt (4). The two sides of the moving clamp (73) are provided with straight grooves (77), the inner side of the auxiliary wheel (72) is movably provided with a sliding rod (76), the outer side of the sliding rod (76) is movably arranged in the inner side of the straight groove (77), the inner sides of the two straight grooves (77) are provided with springs (78) connected with the sliding rod (76), the outer side of the side plate (2) is provided with a supporting plate (71), the side edge of the moving clamp (73) is provided with a straight rod (79), and the end of the straight rod (79) is provided with a contact disc (75) movably contacting the side edge of the supporting plate (71).

2. The safety generator load test device of claim 1, wherein: The adjusting supporting mechanism (9) comprises a rotating rod (910) arranged in the inner side of the supporting wheel (6), the end of the rotating rod (910) is provided with an L-shaped plate (98), the side surface of the side plate (2) is provided with a sliding groove (95) movably connected with the L-shaped plate (98), the side edge of the side plate (2) is provided with a top plate (94), the side edge of the side plate (2) is provided with a connecting plate (99), the top plate (94) and the connecting plate (99) are movably provided with a threaded rod (96), the L-shaped plate (98) is threadedly connected to the outer side of the threaded rod (96), and the bottom end of the threaded rod (96) is provided with a hand wheel (97) penetrating through the connecting plate (99).

3. The safety generator load test device of claim 2, wherein: The side edge of the side plate (2) is provided with a mounting frame (91), the inner side of the mounting frame (91) is provided with a light rod (93), the outer side of the light rod (93) is movably sleeved with a transverse plate (911) connected with the moving clamp (73), the outer side of the light rod (93) is sleeved with a second tension spring (92), and the two ends of the second tension spring (92) are respectively arranged in the inner sides of the transverse plate (911) and the mounting frame (91).

4. The safety generator load test device of claim 3, wherein: The horizontal displacement mechanism (8) comprises a supporting arc-shaped plate (813) movably arranged on the outer side of the generator body (10), the outer side of the supporting arc-shaped plate (813) is provided with a sliding block (814), the top of the sliding block (814) is provided with a moving frame (87), and the top of the workbench (1) is provided with a slotted plate (811) movably connected with the sliding block (814).

5. The safety generator load test device of claim 4, wherein: The inner side of the slotted plate (811) and the sliding block (814) are provided with a tension spring (812), the top of the workbench (1) is provided with a support frame (84), the top of the support frame (84) is provided with a pneumatic cylinder (85), the output end of the pneumatic cylinder (85) is provided with a push disc (86) in active contact with the generator body (10), the inside of the moving frame (87) is provided with a screw rod (89) in screw thread, the bottom end of the screw rod (89) is provided with an extrusion arc-shaped plate (810) in active contact with the generator body (10), and the top end of the screw rod (89) is provided with a rotating disc (88).

6. The safety generator load test device of claim 5, wherein: The side of the moving clamp (73) is provided with a connecting rod (81), the bottom of the connecting rod (81) is provided with an inclined block (82), and the side of the sliding block (814) is provided with a wedge block (83), and the inclined surface of the inclined block (82) is in active contact with the inclined surface of the wedge block (83).

7. A method for testing the load of a safety generator, which is applied to the safety generator load testing device according to claim 6, characterized in that, The steps include: S1: Place the generator body (10) on the top of the arc-shaped plate (813), then rotate the rotating disc (88) to drive the screw rod (89) to move, so that the inside of the extrusion arc-shaped plate (810) at the bottom end of the screw rod (89) is in contact with the outside of the generator body (10), thereby completing the limiting and fixing of the generator body (10), and finally the generator body (10) is pushed into the detection area by the push disc (86) at the output end of the pneumatic cylinder (85); S2: Rotate the hand wheel (97) to make the L-shaped plate (98) outside the threaded rod (96) descend, the L-shaped plate (98) drives the rotating rod (910) and the supporting wheel (6) to descend, the belt (4) is sleeved on the output end of the generator body (10), then the L-shaped plate (98) and the supporting wheel (6) are reset by rotating the hand wheel (97), thereby completing the installation of the belt (4); S3: When the generator body (10) detects that the belt (4) is broken, the tension spring (92) pulls the transverse plate (911) to reset quickly, and the contact disc (75) also moves away from the supporting plate (71), the spring (78) drives the threaded rod (96) and the auxiliary wheel (72) to reset, so that the broken belt (4) is clamped between the extrusion wheel (5) and the auxiliary wheel (72), preventing the output end of the generator body (10) from winding the belt (4), thereby protecting the generator body (10) and personnel safety.

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