An engine maintenance detection device capable of measuring starting torque

Abstract

The invention discloses an engine maintenance detection device capable of measuring starting torque, and relates to the technical field of engine detection. The detection device comprises a base, a mounting seat, a connector, a torque detection machine and a magnetic powder brake. The mounting seat and the magnetic powder brake are relatively arranged at two ends above the base. Compared with the current engine detection device, the invention is provided with an adjustable connection component, and the adjustable connection component can be connected to engine output shafts of different diameters and shapes. The adjustable connection component facilitates the staff to measure the torque of engines of different models without replacing the connection components. In addition, during the process of measuring the engine torque, if the invention encounters equipment failure or power outage, the adjustable connection component will automatically separate from the output shaft of the engine, so that the staff can take the engine away from the detection device and then measure other physical quantities of the engine.

Description

Technical Field

[0001] The invention relates to the technical field of engine detection, in particular to an engine maintenance detection device capable of measuring starting torque. Background Art

[0002] Engine maintenance and testing equipment is an important tool for checking and repairing engine performance. The testing equipment can help technicians quickly diagnose the health of the engine and make necessary adjustments and secondary repairs. The engine's starting torque performance is one of the important indicators for judging whether the engine is healthy.

[0003] The current engine maintenance detection device detects the engine starting torque by adopting a technical solution similar to that of patents "CN118091403A" and "CN101473129A". However, in actual working process, due to the different specifications of the engine, the output shaft diameter and shape of the engine are very different. When detecting engines of different specifications, the staff often need to frequently adjust different connecting parts, which affects the work efficiency. In addition, the current engine maintenance detection device can basically only detect whether a certain performance of the engine is qualified. At the same time, when the detection device fails, the staff cannot easily remove the engine to measure other physical quantities of the engine later. Summary of the invention

[0004] The object of the present invention is to provide a detection device for engine maintenance that can measure starting torque, so as to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a detection device for engine maintenance capable of measuring starting torque, the detection device comprising a base, a mounting seat, a connector, a torque detector and a magnetic powder brake, the mounting seat and the magnetic powder brake being relatively arranged at the upper ends of the base, the mounting seat being movably mounted on the base by a linear motor, the torque detector being arranged between the mounting seat and the magnetic powder brake, the connector being arranged between the mounting seat and the torque detector, a connecting sleeve being arranged in the connector, an adjustable connecting component being arranged at one end of the connecting sleeve away from the torque detector, the torque detector being connected to the magnetic powder brake through a coupling, before the present invention works, the engine needs to be placed on the mounting seat, the mounting seat and the engine are driven to move toward the torque detector by the linear motor, the output shaft of the engine is connected to the torque detector by the adjustable connecting component and the connecting sleeve, the adjustable connecting component in the present invention can be connected to engine output shafts of different diameters and shapes, thereby greatly improving the working efficiency and application scenarios of the present invention.

[0006] Furthermore, the adjustable connecting component includes a movable seat, a first connecting claw, a second connecting claw and a third connecting claw, an adjusting component is arranged inside the movable seat, three groups of slide grooves are arranged on the side of the movable seat close to the engine, a group of slides are arranged in each group of the slide grooves, and the three groups of slides are controlled to move in the slide grooves by the adjusting component, one group of slides is provided with a first connecting claw, another group of slides is provided with a second connecting claw, and the last group of slides is provided with a third connecting claw, the first connecting claw is provided with a connecting block, the connecting block is telescopically mounted on the first connecting claw, and the second connecting claw is provided with a connecting groove, if a flat key is provided on the output shaft of the engine, the staff can rotate the connecting sleeve until the connecting groove provided on the second connecting claw is aligned with the flat key on the output shaft of the engine (at this time the connecting block is located in the first connecting claw), and then the mounting seat and the engine are driven by the linear motor to move in the direction of the torque detector, when the flat key on the output shaft of the engine enters the connecting groove on the second connecting claw, the engine can be started, and when the engine is started, The torque of the engine is transmitted to the torque detector through the connecting sleeve and the movable seat, and the starting torque of the engine and the torque under different working conditions are measured by the torque detector; if a flat groove is provided on the output shaft of the engine, the staff can rotate the connecting sleeve until the connecting block provided on the first connecting claw is aligned with the flat groove on the engine output shaft, and then the mounting seat and the engine are driven by the linear motor to move toward the torque detector. When the connecting block is located directly above the flat groove of the engine output shaft, the staff can move the connecting block to the inside of the flat groove of the engine output shaft to ensure the transmission connection between the engine and the torque detector. Finally, when encountering engine output shafts of different diameters, the staff can control the distance between the first connecting claw, the second connecting claw and the third connecting claw by adjusting the assembly and the three sets of slides, so as to facilitate the connection of the connecting block on the first connecting claw and the connecting groove on the second connecting claw with engine output shafts of different diameters. Compared with the current engine maintenance detection device, the present invention can measure the torque of engines of different models without replacing the connecting parts.

[0007] Furthermore, a cylinder is provided at one end of the connecting sleeve away from the engine, and a working end of the cylinder is connected to a movable seat, and the movable seat is driven to move in the connecting sleeve by the cylinder, and a jump detection component is provided at one end of the connector close to the engine, and the jump detection component includes a second electromagnet, a sensing rod, a first groove and a second groove, the second electromagnet is provided in the first groove, one end of the sensing rod is provided in the first groove and has magnetism, the other end of the sensing rod is wound with a sensing spring and provided in the second groove, and a piezoelectric sheet is provided at one end of the second groove close to the first groove, and before the output shaft of the engine extends into the connector, the second electromagnet will generate a set of magnetic fields that attract the sensing rod, so that the sensing rod and the second electromagnet are mutually coupled. When the output shaft of the engine extends into the connector, the second electromagnet is closed, and the sensing rod is in contact with the output shaft of the engine (the sensing spring is still in a compressed state at this time, and a group of electrical signals will be generated on the piezoelectric sheet, which is the electrical signal when the output shaft of the engine is not rotating). When the staff measures the starting torque of the engine and the torque under different working conditions, if the output shaft of the engine beats, the electrical signal on the piezoelectric sheet will change synchronously, so that the staff can judge whether the engine is repaired in time. Finally, the present invention can drive the movable seat to move in the connecting sleeve through the cylinder, so that the staff can choose whether to measure the output shaft beat of the engine separately according to needs.

[0008] Furthermore, each group of the slide seats is movably installed in the slide groove through an adjusting spring, a group of movable chambers is arranged at the side end of each group of the slide grooves, a group of push rods is arranged in each group of the movable chambers, and each group of the push rods is connected to a group of slide seats. The adjusting component includes a hydraulic chamber, a first electromagnet and a hydraulic plate. The hydraulic plate is arranged in the hydraulic chamber, the first electromagnet is arranged at the side end of the hydraulic plate, and a permanent magnet is embedded at one end of the hydraulic plate close to the first electromagnet. The hydraulic chamber is connected to the three groups of movable chambers through three groups of drainage channels. The present invention controls the hydraulic plate to move in the hydraulic chamber by the first electromagnet, and the hydraulic chamber is filled with liquid. Oil pressure. When the hydraulic plate squeezes the hydraulic oil in the hydraulic cavity, under the action of the hydraulic pressure, the three groups of slides will slide in the three groups of slide grooves. At this time, the distance between the first connecting claw, the second connecting claw and the third connecting claw will be reduced. Through the above technical scheme, the present invention can be applicable to engines with output shafts of different diameters. Finally, when the present invention encounters equipment failure or power outage, the three groups of slides will automatically reset under the action of the adjusting spring. At this time, the distance between the first connecting claw, the second connecting claw and the third connecting claw will automatically increase, so as to facilitate the staff to remove the engine from the detection device and then measure other physical quantities of the engine.

[0009] Furthermore, a telescopic groove is provided in the first connecting claw, and the connecting block is movably installed in the telescopic groove by a telescopic spring. A valve is provided inside the sliding seat close to the first connecting claw, and one end of the valve is connected to the telescopic groove, and the other end of the valve is connected to the movable cavity. When the adjustable connecting assembly in the present invention is connected to the engine with a flat key-shaped output shaft, the valve is always in a closed state; when the output shaft of the engine is flat-groove-shaped and the connecting block is located directly above the flat groove of the engine output shaft, the staff can open the valve and increase the magnetic field of the first electromagnet so that the hydraulic plate continues to squeeze the hydraulic cavity. Hydraulic oil, at this time, part of the hydraulic oil in the hydraulic chamber will enter the telescopic groove, and under the action of hydraulic pressure, the connecting block enters the flat groove of the engine output shaft. Through the above technical scheme, it is ensured that the engine torque can be transmitted to the torque detection machine during the start-up and rotation of the engine. After the present invention measures the torque of the engine, the staff can reset the hydraulic plate by changing the magnetic field of the first electromagnet, and the connecting block and the slide seat will also reset themselves under the action of the telescopic spring and the adjusting spring. Finally, the staff closes the valve and chooses whether to open the valve again according to the model of the next engine output shaft.

[0010] Furthermore, a first camera and a second camera are provided on the inner wall of one end of the connecting sleeve close to the engine, the first camera and the first connecting claw are in the same plane, the orientation of the first camera is the same as the orientation of the connecting block, the second camera and the second connecting claw are in the same plane, the orientation of the first camera is the same as the orientation of the connecting groove, and a rotating motor is provided on the outside of the connector, and the rotating motor is connected to the connecting sleeve through a positioning assembly. When the output shaft of the engine enters the connector, the staff can first turn on the rotating motor, and drive the connecting sleeve to rotate through the rotating motor and the positioning assembly. When the connecting sleeve rotates, the first camera, the second camera, and the first connecting claw and the second connecting claw will rotate synchronously. The first camera is convenient for the staff to align the connecting block set on the first connecting claw with the flat groove on the engine output shaft, and the second camera is convenient for the staff to align the connecting groove set on the second connecting claw with the flat key on the engine output shaft.

[0011] Furthermore, the positioning assembly includes a first gear, a second gear and a transmission assembly, the first gear is fixedly mounted on the outside of the connecting sleeve, the second gear is connected to the rotating motor, the transmission assembly includes a first transmission shaft and a second transmission shaft, a third gear is arranged on the first transmission shaft, a fourth gear is arranged on the second transmission shaft, the third gear is meshed with the first gear, and the fourth gear is meshed with the second gear, a group of third electromagnets are arranged on the ends of the first transmission shaft and the second transmission shaft that are close to each other, when the rotating motor drives the connecting sleeve to rotate, the two groups of third electromagnets will generate magnetic fields that attract each other (the specific working principle can be referred to the magnetic coupling), at this time, the first transmission shaft and the second transmission shaft rotate synchronously, so that the rotating motor can transmit power to the connecting sleeve, when the present invention measures the torque of the engine and the jumpiness of the output shaft, the two groups of third electromagnets are in a closed state, at this time, the first transmission shaft and the second transmission shaft cannot rotate synchronously, thereby avoiding the rotating motor affecting the normal rotation of the engine.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: compared with the current engine detection device, the present invention is provided with an adjustable connecting component, and the adjustable connecting component can be connected to engine output shafts of different diameters and shapes. The adjustable connecting component is convenient for the staff to measure the torque of engines of different models without replacing the connecting parts, thereby greatly improving the working efficiency and application scenarios of the present invention. In addition, in the process of measuring the engine torque, if the present invention encounters equipment failure or power outage, the adjustable connecting component will automatically separate from the output shaft of the engine, so as to facilitate the staff to remove the engine from the detection device, and then measure other physical quantities of the engine. The present invention is also provided with a jump detection component. At the same time, the present invention can drive the movable seat to move in the connecting sleeve through the cylinder. When the staff needs to increase When measuring the working efficiency, the present invention can measure whether the vibration amplitude of the engine output shaft exceeds the standard during operation through the vibration detection component while measuring the engine torque. When the staff needs to accurately detect the vibration of the engine output shaft, they only need to drive the movable seat away from the engine output shaft through the cylinder to measure the vibration of the engine output shaft alone. Finally, the present invention is also provided with a rotating motor and a positioning component. The rotating motor and the positioning component can drive the connecting sleeve to rotate, so as to facilitate the alignment of the connecting block set on the first connecting claw with the flat groove on the engine output shaft or the connecting groove set on the second connecting claw with the flat key on the engine output shaft. When the present invention measures the torque of the engine and the vibration of the output shaft, the positioning component can disconnect the connection between the rotating motor and the connecting sleeve, thereby preventing the rotating motor from affecting the normal rotation of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 It is a schematic diagram of the internal structure of the connector of the present invention;

[0015] Figure 3 It is a schematic diagram of the connecting sleeve structure of the present invention;

[0016] Figure 4 It is a schematic diagram of the structure of the movable seat of the present invention;

[0017] Figure 5 A cross-sectional view of the movable seat of the present invention;

[0018] Figure 6 For the present invention Figure 2 Schematic diagram of the structure of the middle BB part;

[0019] Figure 7 For the present invention Figure 2 Schematic diagram of the structure of the middle AA section;

[0020] Figure 8 It is a schematic diagram of the transmission assembly structure of the present invention.

[0021] In the figure: 1, base; 2, mounting base; 3, engine; 4, connector; 41, connecting sleeve; 411, cylinder; 412, first gear; 42, movable seat; 421, first connecting claw; 4211, connecting block; 422, second connecting claw; 4221, connecting groove; 423, third connecting claw; 424, hydraulic chamber; 425, first electromagnet; 426, hydraulic plate; 427, push rod; 428, slide seat; 4281, valve; 43, second electromagnet; 44, sensing rod; 45, second gear; 46, transmission assembly; 461, first transmission shaft; 4611, third gear; 462, second transmission shaft; 4621, fourth gear; 463, third electromagnet; 5, torque detector; 6, coupling; 7, magnetic powder brake. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example: Figure 1-Figure 5As shown, the present invention provides a technical solution, a detection device for engine maintenance that can measure starting torque, the detection device comprising a base 1, a mounting base 2, a connector 4, a torque detector 5 and a magnetic powder brake 7, the mounting base 2 and the magnetic powder brake 7 are relatively arranged at the upper ends of the base 1, the mounting base 2 is movably mounted on the base 1 through a linear motor, an engine 3 is arranged on the mounting base 2, the torque detector 5 is arranged between the mounting base 2 and the magnetic powder brake 7, the connector 4 is arranged between the mounting base 2 and the torque detector 5, a connecting sleeve 41 is arranged in the connector 4, an adjustable connecting component is arranged at one end of the connecting sleeve 41 away from the torque detector 5, one end of the torque detector 5 is connected to the magnetic powder brake 7 through a coupling 6, and the other end of the torque detector 5 is connected to the output shaft of the engine 3 through the connecting sleeve 41 and the adjustable connecting component.

[0024] like Figure 1-Figure 5 As shown, the adjustable connecting component includes a movable seat 42, a first connecting claw 421, a second connecting claw 422 and a third connecting claw 423. An adjusting component is arranged inside the movable seat 42. Three groups of slide grooves are arranged on the side of the movable seat 42 close to the engine 3. A group of slides 428 are arranged in each group of slide grooves. The three groups of slides 428 are controlled to move in the slide grooves by the adjusting component. One group of slides 428 is provided with a first connecting claw 421, another group of slides 428 is provided with a second connecting claw 422, and the last group of slides 428 is provided with a third connecting claw 423. The first connecting claw 421 is provided with a connecting block 4211, and the connecting block 4211 is telescopically mounted on the first connecting claw 421. The second connecting claw 422 is provided with a connecting groove 4221.

[0025] Before the present invention works, the engine 3 needs to be placed on the mounting seat 2. If a flat key is provided on the output shaft of the engine 3, the staff can rotate the connecting sleeve 41 until the connecting groove 4221 provided on the second connecting claw 422 is aligned with the flat key on the output shaft of the engine 3 (at this time, the connecting block 4211 is located in the first connecting claw 421), and then the mounting seat 2 and the engine 3 are driven by the linear motor to move in the direction of the torque detector 5. When the flat key on the output shaft of the engine 3 enters the connecting groove 4221 on the second connecting claw 422, the engine 3 can be started. When the engine 3 is started, the torque of the engine 3 is transmitted to the torque detector 5 through the connecting sleeve 41 and the movable seat 42, and the starting torque of the engine 3 and the torque under different working conditions are measured by the torque detector 5; if a flat groove is provided on the output shaft of the engine 3, the staff can rotate the connecting sleeve 41 until the connecting block 4211 provided on the first connecting claw 421 is aligned with the output shaft of the engine 3 The flat grooves on the output shaft are aligned, and then the linear motor drives the mounting base 2 and the engine 3 to move toward the direction of the torque detector 5. When the connecting block 4211 is located directly above the flat groove of the output shaft of the engine 3, the staff can move the connecting block 4211 to the inside of the flat groove of the output shaft of the engine 3 to ensure the transmission connection between the engine 3 and the torque detector 5. Finally, when encountering output shafts of the engine 3 with different diameters, the staff can control the distance between the first connecting claw 421, the second connecting claw 422 and the third connecting claw 423 through the adjustment component and the three sets of slides 428, so as to facilitate the connection between the connecting block 4211 on the first connecting claw 421 and the connecting groove 4221 on the second connecting claw 422 and the output shafts of the engine 3 with different diameters. Compared with the current engine maintenance detection device, the present invention can measure the torque of engines 3 of different models without replacing the connecting parts, thereby greatly improving the working efficiency and application scenarios of the present invention.

[0026] like Figure 2 and Figure 6 As shown, a cylinder 411 is provided at one end of the connecting sleeve 41 away from the engine 3, and the working end of the cylinder 411 is connected to the movable seat 42. The movable seat 42 is driven to move in the connecting sleeve 41 by the cylinder 411. A beating detection component is provided at one end of the connector 4 close to the engine 3. The beating detection component includes a second electromagnet 43, a sensing rod 44, a first groove and a second groove. The second electromagnet 43 is arranged in the first groove, one end of the sensing rod 44 is arranged in the first groove and has magnetism, the other end of the sensing rod 44 is wound with an induction spring and is arranged in the second groove, and a piezoelectric sheet is provided at one end of the second groove close to the first groove.

[0027] Before the output shaft of the engine 3 is inserted into the connector 4, the second electromagnet 43 will generate a set of magnetic fields that attract the sensing rod 44, so that the sensing rod 44 is in contact with the second electromagnet 43 (the sensing spring is in a compressed state at this time). When the output shaft of the engine 3 is inserted into the connector 4, the second electromagnet 43 is turned off, and the sensing rod 44 is in contact with the output shaft of the engine 3 (the sensing spring is still in a compressed state at this time, and a set of electrical signals will be generated on the piezoelectric sheet, which is the electrical signal when the output shaft of the engine 3 is not rotating). When the staff measures the starting torque of the engine 3 and the torque under different working conditions, if the output shaft of the engine 3 jumps, the electrical signal on the piezoelectric sheet will change synchronously, so that the staff can promptly determine whether the engine 3 is repaired. Finally, the present invention can drive the movable seat 42 to move in the connecting sleeve 41 through the cylinder 411, so that the staff can choose whether to measure the output shaft jump of the engine 3 separately according to needs.

[0028] like Figure 2-Figure 5 As shown, each group of slide seats 428 is movably installed in the slide slot by adjusting springs, a group of movable chambers are arranged at the side ends of each group of slide slots, a group of push rods 427 are arranged in each group of movable chambers, and each group of push rods 427 are connected to a group of slide seats 428. The adjustment component includes a hydraulic chamber 424, a first electromagnet 425 and a hydraulic plate 426. The hydraulic plate 426 is arranged in the hydraulic chamber 424, the first electromagnet 425 is arranged at the side end of the hydraulic plate 426, and a permanent magnet is embedded at one end of the hydraulic plate 426 close to the first electromagnet 425. The hydraulic chamber 424 is connected to the three groups of movable chambers through three groups of drainage channels. The present invention controls the hydraulic plate 426 to move in the hydraulic chamber 424 through the first electromagnet 425, and the hydraulic chamber 424 is filled with liquid. Oil pressure, when the hydraulic plate 426 squeezes the hydraulic oil in the hydraulic chamber 424, under the action of the hydraulic pressure, the three groups of slides 428 will slide in the three groups of slide grooves. At this time, the distance between the first connecting claw 421, the second connecting claw 422 and the third connecting claw 423 will be reduced. Through the above technical scheme, the present invention can be applied to engines 3 with output shafts of different diameters. Finally, when the present invention encounters equipment failure or power outage, the three groups of slides 428 will automatically reset under the action of the adjusting spring. At this time, the distance between the first connecting claw 421, the second connecting claw 422 and the third connecting claw 423 will automatically increase, so as to facilitate the staff to remove the engine 3 from the detection device, and then measure other physical quantities of the engine 3.

[0029] like Figure 5As shown, a telescopic groove is provided in the first connecting claw 421, and the connecting block 4211 is movably installed in the telescopic groove by a telescopic spring. A valve 4281 is provided inside the sliding seat 428 close to the first connecting claw 421, and one end of the valve 4281 is connected to the telescopic groove, and the other end of the valve 4281 is connected to the movable cavity. When the adjustable connecting assembly in the present invention is connected to the engine 3 with a flat key-shaped output shaft, the valve 4281 is always in a closed state; when the output shaft of the engine 3 is flat-groove-shaped and the connecting block 4211 is located directly above the flat groove of the output shaft of the engine 3, the staff can open the valve 4281 and increase the magnetic field of the first electromagnet 425, so that the hydraulic plate 426 continues to squeeze the hydraulic cavity 424. Hydraulic oil, at this time, a part of the hydraulic oil in the hydraulic chamber 424 will enter the telescopic groove, and under the action of the hydraulic pressure, the connecting block 4211 enters the flat groove of the output shaft of the engine 3. Through the above technical scheme, it is ensured that the torque of the engine 3 can be transmitted to the torque detection machine 5 during the startup and rotation of the engine 3. After the present invention measures the torque of the engine 3, the staff can reset the hydraulic plate 426 by changing the magnetic field of the first electromagnet 425, and the connecting block 4211 and the slide 428 will also reset themselves under the action of the telescopic spring and the adjusting spring. Finally, the staff closes the valve 4281 and chooses whether to open the valve 4281 again according to the model of the next output shaft of the engine 3.

[0030] like Figure 2 , Figure 3 , Figure 7 , Figure 8 As shown, a first camera and a second camera are arranged on the inner wall of one end of the connecting sleeve 41 close to the engine 3, the first camera and the first connecting claw 421 are in the same plane, the orientation of the first camera is the same as the orientation of the connecting block 4211, the second camera and the second connecting claw 422 are in the same plane, the orientation of the first camera is the same as the orientation of the connecting groove 4221, and a rotating motor is arranged on the outer side of the connector 4, and the rotating motor is connected to the connecting sleeve 41 through a positioning assembly. When the output shaft of the engine 3 enters the connector 4, the staff can first turn on the rotating motor, and drive the connecting sleeve 41 to rotate through the rotating motor and the positioning assembly. When the connecting sleeve 41 rotates, the first camera, the second camera, and the first connecting claw 421 and the second connecting claw 422 will rotate synchronously. The first camera is convenient for the staff to align the connecting block 4211 set on the first connecting claw 421 with the flat groove on the output shaft of the engine 3, and the second camera is convenient for the staff to align the connecting groove 4221 set on the second connecting claw 422 with the flat key on the output shaft of the engine 3.

[0031] like Figure 7 and Figure 8As shown, the positioning assembly includes a first gear 412, a second gear 45 and a transmission assembly 46, the first gear 412 is fixedly mounted on the outer side of the connecting sleeve 41, the second gear 45 is connected to the rotating motor, the transmission assembly 46 includes a first transmission shaft 461 and a second transmission shaft 462, the first transmission shaft 461 is provided with a third gear 4611, the second transmission shaft 462 is provided with a fourth gear 4621, the third gear 4611 is meshed with the first gear 412, the fourth gear 4621 is meshed with the second gear 45, and the first transmission shaft 461 and the second transmission shaft 462 are both provided at one end close to each other. There is a group of third electromagnets 463. When the rotating motor drives the connecting sleeve 41 to rotate, the two groups of third electromagnets 463 will generate magnetic fields that attract each other (the specific working principle can be referred to the magnetic coupling). At this time, the first transmission shaft 461 and the second transmission shaft 462 rotate synchronously to facilitate the rotating motor to transmit power to the connecting sleeve 41. When the present invention measures the torque of the engine 3 and the jitter of the output shaft, the two groups of third electromagnets 463 are in a closed state. At this time, the first transmission shaft 461 and the second transmission shaft 462 cannot rotate synchronously, thereby preventing the rotating motor from affecting the normal rotation of the engine 3.

[0032] The working principle of the present invention is as follows: before work, the engine 3 is placed on the mounting seat 2. If the engine 3 has a flat-key output shaft, the staff turns on the rotating motor, and drives the connecting sleeve 41 to rotate through the rotating motor and the positioning assembly. When the connecting groove 4221 provided on the second connecting claw 422 is aligned with the flat key on the output shaft of the engine 3, the mounting seat 2 and the engine 3 are driven to move toward the direction of the torque detector 5 by the linear motor until the flat key on the output shaft of the engine 3 enters the connecting groove 4221 on the second connecting claw 422. If the engine 3 has a flat-groove output shaft, the connecting sleeve 41 is driven to rotate through the rotating motor and the positioning assembly until the connecting block 4211 provided on the first connecting claw 421 is aligned with the flat groove on the output shaft of the engine 3, and then the mounting seat 2 and the engine 3 are driven to move toward the direction of the torque detector 5 by the linear motor. When the connecting block 4211 is located directly above the flat groove of the output shaft of the engine 3, the connecting block 4211 is driven to move to the inside of the flat groove of the output shaft of the engine 3 through the adjusting component. When the output shaft of the engine 3 is connected to the adjustable connecting component, the engine 3 is started, and the torque of the engine 3 is transmitted to the torque detector 5 through the connecting sleeve 41 and the movable seat 42. The starting torque of the engine 3 and the torque under different working conditions are measured by the torque detector 5. Finally, when encountering output shafts of the engine 3 with different diameters, the staff can control the distance between the first connecting claw 421, the second connecting claw 422 and the third connecting claw 423 through the adjusting component and the three sets of slides 428, so as to facilitate the connection of the connecting block 4211 on the first connecting claw 421 and the connecting groove 4221 on the second connecting claw 422 with output shafts of the engine 3 with different diameters.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. The embodiments should therefore be considered exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An engine maintenance detection device capable of measuring starting torque, characterized in that: The detection device comprises a base (1), a mounting base (2), a connector (4), a torque detector (5) and a magnetic powder brake (7); the mounting base (2) and the magnetic powder brake (7) are arranged at opposite ends above the base (1); the mounting base (2) is movably mounted on the base (1) via a linear motor; an engine (3) is arranged on the mounting base (2); the torque detector (5) is arranged between the mounting base (2) and the magnetic powder brake (7); the connector (4) is arranged between the mounting base (2) and the torque detector (5); a connecting sleeve (41) is arranged inside the connector (4); an adjustable connecting component is arranged at one end of the connecting sleeve (41) away from the torque detector (5); one end of the torque detector (5) is connected to the magnetic powder brake (7) via a coupling (6); and the other end of the torque detector (5) is connected to the output shaft of the engine (3) via the connecting sleeve (41) and the adjustable connecting component; The adjustable connection component comprises a movable seat (42), a first connection claw (421), a second connection claw (422) and a third connection claw (423); an adjustment component is arranged inside the movable seat (42); three groups of slide grooves are arranged on a side of the movable seat (42) close to the engine (3); a group of slide seats (428) are arranged in each group of the slide grooves; the three groups of slide seats (428) are controlled to move in the slide grooves by the adjustment component; one group of slide seats (428) is provided with a first connection claw (421); another group of slide seats (428) is provided with a second connection claw (422); and the last group of slide seats (428) is provided with a third connection claw (423); the first connection claw (421) is provided with a connection block (4211); the connection block (4211) is telescopically mounted on the first connection claw (421); and the second connection claw (422) is provided with a connection groove (4221); Each group of the slide seats (428) is movably installed in the slide groove through an adjustment spring, a group of movable chambers is provided at the side end of each group of the slide grooves, a group of push rods (427) is provided in each group of the movable chambers, and each group of the push rods (427) is connected to a group of slide seats (428), the adjustment component comprises a hydraulic chamber (424), a first electromagnet (425) and a hydraulic plate (426), the hydraulic plate (426) is provided in the hydraulic chamber (424), the first electromagnet (425) is provided at the side end of the hydraulic plate (426), a permanent magnet is embedded at one end of the hydraulic plate (426) close to the first electromagnet (425), and the hydraulic chamber (424) is connected to the three groups of movable chambers through three groups of drainage channels; A telescopic groove is provided in the first connecting claw (421), and the connecting block (4211) is movably installed in the telescopic groove via a telescopic spring. A valve (4281) is provided inside the sliding seat (428) close to the first connecting claw (421), and one end of the valve (4281) is connected to the telescopic groove, and the other end of the valve (4281) is connected to the movable chamber.

2. The engine maintenance detection device capable of measuring starting torque according to claim 1, characterized in that: A cylinder (411) is provided at one end of the connecting sleeve (41) away from the engine (3); a working end of the cylinder (411) is connected to a movable seat (42); the movable seat (42) is driven to move within the connecting sleeve (41) by the cylinder (411); and a vibration detection component is provided at one end of the connector (4) close to the engine (3).

3. The engine maintenance detection device capable of measuring starting torque according to claim 2, characterized in that: The beating detection assembly comprises a second electromagnet (43), a sensing rod (44), a first groove and a second groove, the second electromagnet (43) being arranged in the first groove, one end of the sensing rod (44) being arranged in the first groove, the other end of the sensing rod (44) being wound with a sensing spring and arranged in the second groove, and a piezoelectric sheet being arranged at one end of the second groove close to the first groove.

4. The engine maintenance detection device capable of measuring starting torque according to claim 2, characterized in that: A first camera and a second camera are arranged on the inner wall of one end of the connecting sleeve (41) close to the engine (3); the first camera and the first connecting claw (421) are located in the same plane; the orientation of the first camera is the same as that of the connecting block (4211); the second camera and the second connecting claw (422) are located in the same plane; the orientation of the first camera is the same as that of the connecting groove (4221); a rotating motor is arranged on the outer side of the connector (4); the rotating motor is connected to the connecting sleeve (41) via a positioning assembly.

5. The engine maintenance detection device capable of measuring starting torque according to claim 4, characterized in that: The positioning assembly comprises a first gear (412), a second gear (45) and a transmission assembly (46); the first gear (412) is fixedly mounted on the outside of the connecting sleeve (41); the second gear (45) is connected to the rotating motor; the transmission assembly (46) comprises a first transmission shaft (461) and a second transmission shaft (462); a third gear (4611) is arranged on the first transmission shaft (461); a fourth gear (4621) is arranged on the second transmission shaft (462); the third gear (4611) is meshed with the first gear (412); the fourth gear (4621) is meshed with the second gear (45); and a group of third electromagnets (463) are arranged at the ends of the first transmission shaft (461) and the second transmission shaft (462) that are close to each other.

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