Detection device

Abstract

The utility model belongs to the field of detection, and particularly relates to a detection device. The detection device comprises a direct current motor, a marking block and a sliding assembly, wherein the direct current motor can be controlled to rotate at different speeds; the marking block is arranged on the direct current motor and rotates synchronously with the direct current motor, and at least three triggering structures are evenly arranged on the marking block at intervals. The sliding assembly is arranged on the peripheral side of the marking block, the rotating speed sensor is arranged on the sliding assembly, and the rotating speed sensor can move in the direction close to or away from the marking block through the sliding assembly; when the marking block rotates for one circle along with the direct current motor, the rotating speed sensor can be triggered for at least three times. The rotating speed sensor can be triggered for at least three times when the marking block rotates by one circle, the actual rotating speed of the turbine can be simulated when the marking block rotates at a low speed, detection on the performance of the rotating speed sensor is optimized, and the accuracy of turbine rotating speed detection is improved.

Description

Technical Field

[0001] The utility model relates to the detection field, in particular to a detection device. Background Art

[0002] The turbine of a turbocharger rotates at a very high speed during operation. At different speeds, the output power of the turbocharger is different. Accurately monitoring the speed of the turbine allows the Electronic Control Unit (ECU) to better control the operation of the engine.

[0003] In the prior art, a speed sensor is installed to monitor the real-time speed of the turbine. Before using the speed sensor, it is necessary to test the speed sensor to avoid performance problems of the speed sensor, which may cause safety hazards. However, the turbine rotation speed is usually above 150,000 rad / min. It is difficult to simulate the high-speed rotation environment of the turbine under normal conditions, so it is impossible to accurately detect whether the speed sensor has performance problems. Utility Model Content

[0004] The purpose of the utility model is to provide a detection device to solve the problem in the prior art that it is difficult to simulate the high-speed rotation environment of the turbine, so the speed sensor cannot be accurately detected, optimize the detection of the performance of the speed sensor, improve the accuracy of the turbine speed detection, and reduce the safety hazards during the use of the turbine.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The detection device comprises:

[0007] A DC motor, a marking block and a sliding assembly, wherein the DC motor can be controlled to rotate at different speeds; the marking block is arranged on the DC motor and rotates synchronously with the DC motor, and at least three trigger structures are evenly spaced on the marking block; the sliding assembly is arranged on the peripheral side of the marking block, and a speed sensor is arranged on the sliding assembly, and the speed sensor can move in a direction close to or away from the marking block through the sliding assembly;

[0008] When the marking block rotates one circle along with the DC motor, the rotation speed sensor can be triggered at least three times.

[0009] As an optional technical solution of the detection device, a plug-in shaft is provided at the center of the DC motor, and a plug-in hole is provided at the center of the marking block. The plug-in shaft cooperates with the plug-in hole to plug the marking block onto the DC motor.

[0010] As an optional technical solution of the detection device, the marking block includes a multi-faceted right prism, and the connection between two adjacent faces of the multi-faceted right prism serves as the trigger structure.

[0011] As an optional technical solution for the detection device, the sliding assembly includes a sliding rail, a sliding block and a driving handle. The sliding rail is arranged on the peripheral side of the marking block, the sliding block is slidably connected with the sliding rail, and the speed sensor is arranged on the sliding block. The driving handle can drive the sliding block to move in a direction close to or away from the marking block to adjust the distance between the speed sensor and the marking block.

[0012] As an optional technical solution for the detection device, the sliding assembly also includes a first rod and a second rod, one end of the first rod is fixedly connected to the driving handle and the other end is rotatably connected to the second rod, and the other end of the second rod is rotatably connected to the sliding block.

[0013] As an optional technical solution of the detection device, a locking assembly is provided on the sliding block, and the rotation speed sensor is fixed to the sliding block through the locking assembly.

[0014] As an optional technical solution for the detection device, the locking assembly includes a locking plate and a support member, the support member is provided with two through holes spaced apart in the vertical direction, and the speed sensor can selectively pass through one of the through holes and be locked by the locking plate to change the position of the speed sensor in the vertical direction.

[0015] As an optional technical solution of the detection device, a flexible anti-wear part is arranged between the locking assembly and the rotation speed sensor.

[0016] As an optional technical solution of the detection device, the detection device also includes a base plate, and the DC motor and the slide rail are both arranged on the base plate.

[0017] As an optional technical solution of the detection device, the distance between the rotation speed sensor and the marking block is 0.6mm-0.8mm.

[0018] Beneficial effects of the utility model:

[0019] The detection device provided by the utility model includes a DC motor, a marking block and a sliding assembly. The DC motor can be controlled to rotate at different speeds. The marking block is arranged on the DC motor to rotate synchronously with the DC motor. At least three trigger structures are evenly spaced on the marking block. The sliding assembly is arranged on the peripheral side of the marking block. The speed sensor is arranged on the sliding assembly. The speed sensor can move in a direction close to or away from the marking block through the sliding assembly. When the marking block rotates one circle with the DC motor, the speed sensor can be triggered at least three times. The rotation of the marking block can trigger the speed sensor at least three times. The low-speed rotation of the marking block can also simulate the actual speed of the turbine, which optimizes the detection of the performance of the speed sensor, improves the accuracy of the turbine speed detection, and reduces the safety hazards in the use of the turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the detection device provided by the embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of a part of the structure of the detection device provided by the embodiment of the utility model Figure 1 ;

[0022] Figure 3 This is a schematic diagram of a part of the structure of the detection device provided by the embodiment of the utility model Figure 2 ;

[0023] Figure 4 This is a bottom schematic diagram of a bottom plate and a motor drive line of a detection device provided by an embodiment of the utility model;

[0024] Figure 5 is a schematic cross-sectional view of a marking block of a detection device provided by an embodiment of the utility model;

[0025] Figure 6 It is a cross-sectional schematic diagram of a DC motor and a plug-in shaft of a detection device provided in an embodiment of the utility model.

[0026] In the figure:

[0027] 10. DC motor; 11. Connecting shaft; 12. Motor drive line;

[0028] 20. Marking block; 21. Plug hole;

[0029] 30. Speed ​​sensor;

[0030] 40. Sliding assembly; 41. Sliding rail; 411. Side plate; 42. Sliding block; 421. Locking piece; 422. Support member; 43. Driving handle; 431. Handle member; 432. Connecting member; 44. First rod member; 45. Second rod member;

[0031] 50. Base plate. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0036] In the prior art, a speed sensor is installed to monitor the real-time speed of the turbine. Before using the speed sensor, it is necessary to test the speed sensor to avoid performance problems of the speed sensor, which may cause safety hazards. However, the turbine rotation speed is usually above 150,000 rad / min. It is difficult to simulate the high-speed rotation environment of the turbine under normal conditions, so it is impossible to accurately detect whether the speed sensor has performance problems.

[0037] To solve the above problems, this embodiment provides a detection device. Figure 1The detection device includes a DC motor 10, a marking block 20 and a sliding assembly 40. The DC motor 10 can be controlled to rotate at different speeds. The marking block 20 is arranged on the DC motor 10 and rotates synchronously with the DC motor 10. At least three trigger structures are evenly spaced on the marking block 20. The sliding assembly 40 is arranged on the peripheral side of the marking block 20. The speed sensor 30 is arranged on the sliding assembly 40. The speed sensor 30 can move in a direction close to or away from the marking block 20 through the sliding assembly 40. When the marking block 20 rotates one circle with the DC motor 10, the speed sensor 30 can be triggered at least three times. The marking block 20 can trigger the speed sensor 30 at least three times when it rotates one circle. The low-speed rotation of the marking block 20 can also simulate the actual speed of the turbine, which optimizes the detection of the performance of the speed sensor 30, improves the accuracy of the turbine speed detection, and reduces the safety hazards in the use of the turbine.

[0038] Further, see Figure 5 and Figure 6 , a plug-in shaft 11 is provided at the center of the DC motor 10, and a plug-in hole 21 is provided at the center of the marking block 20, and the plug-in shaft 11 cooperates with the plug-in hole 21 to plug the marking block 20 onto the DC motor 10. In this embodiment, the cross section of the plug-in shaft 11 is a combination of a rectangle and two semicircles, and the shape of the plug-in hole 21 corresponds to the plug-in shaft 11. In other embodiments, the plug-in shaft 11 can also be set as a bolt, and the plug-in hole 21 is set as a through hole with a thread, and the bolt passes through the through hole and is screwed with a nut to set the marking block 20 on the DC motor 10.

[0039] Further, the marking block 20 is set as a multi-faceted right prism, and the connection between two adjacent faces of the multi-faceted right prism serves as a trigger structure. When the marking block 20 rotates, the connection between the two adjacent faces will cut the magnetic flux lines of the speed sensor 30, so as to trigger the speed sensor 30 at least three times when the marking block 20 rotates one circle. A magnet is arranged inside the speed sensor 30, and a magnetic field is distributed around the magnet. The marking block 20 is set as a multi-faceted right prism, and each edge can cut the magnetic flux lines. Each time the magnetic flux lines are cut, the speed sensor 30 can be triggered once. In this embodiment, the marking block 20 is set as a hexagonal right prism, and the marking block 20 rotates one circle, and the speed sensor 30 can be triggered six times. The marking block 20 in this embodiment is detachably arranged on the DC motor 10, that is, the marking block 20 can be replaced at any time according to the speed required by different requirements. In other embodiments, the marking block 20 can be set as a cylinder, and grooves are evenly spaced on the axial surface of the marking block 20 to achieve the movement of cutting the magnetic flux lines.

[0040] The distance between the rotation speed sensor 30 and the marking block 20 affects the test accuracy of the rotation speed sensor 30. Figure 2 and Figure 3Preferably, the distance between the speed sensor 30 and the marking block 20 is 0.6mm-0.8mm. In this embodiment, the sliding assembly 40 includes a slide rail 41, a slide block 42 and a driving handle 43. The slide rail 41 is arranged on the peripheral side of the marking block 20, the slide block 42 is slidably connected with the slide rail 41, the speed sensor 30 is arranged on the slide block 42, and the driving handle 43 can drive the slide block 42 to move in a direction close to or away from the marking block 20 to adjust the distance between the speed sensor 30 and the marking block 20. In other embodiments, only the slide rail 41 and the slide block 42 may be provided, the slide block 42 cooperates with the slide rail 41, and the slide block 42 is pushed by hand to drive the speed sensor 30 to adjust the distance between the speed sensor 30 and the marking block 20.

[0041] In this embodiment, the sliding assembly 40 also includes a first rod member 44 and a second rod member 45. One end of the first rod member 44 is fixedly connected to the driving handle 43 and the other end is rotatably connected to the second rod member 45. The other end of the second rod member 45 is rotatably connected to the sliding block 42. The rotation of the driving handle 43 can drive the first rod member 44 and the second rod member 45 to change the angle, thereby changing the total length of the first rod member 44 and the second rod member 45, thereby driving the sliding block 42 to slide along the slide rail 41.

[0042] Specifically, two slide rails 41 are arranged at intervals, and the two slide rails 41 are both provided with side panels 411, and the two side panels 411 extend in the vertical direction. The driving handle 43 includes a handle member 431 and two connecting members 432, the handle member 431 is fixedly connected to one of the connecting members 432, one of the connecting members 432 is rotatably connected to one of the side panels 411, and the other connecting member 432 is rotatably connected to the other side panel 411; two first rod members 44 are arranged, which are respectively fixedly connected to the two connecting members 432, and one end of the second rod member 45 is arranged between the two first rod members 44 and is rotatably connected to the two first rod members 44 through a rotating shaft; two sliding blocks 42 are arranged, and the two sliding blocks 42 are fixedly connected through a connecting shaft, and the other end of the second rod member 45 is rotatably connected to the connecting shaft.

[0043] Furthermore, a locking assembly is provided on the sliding block 42, and the speed sensor 30 is fixed to the sliding block 42 through the locking assembly. Specifically, the locking assembly is provided above the sliding block 42, and the locking assembly includes a locking plate 421 and a support member 422. The support member 422 is provided with two through holes spaced apart in the vertical direction, and the speed sensor 30 can selectively pass through one of the through holes and be locked by the locking plate 421 to change the position of the speed sensor 30 in the vertical direction. Both ends of the locking plate 421 are fixed to the sliding block 42 by screws. In order to prevent the locking assembly from wearing the speed sensor 30, a flexible anti-wear member is provided between the locking assembly and the speed sensor 30. In this embodiment, the flexible anti-wear member is configured as a rubber pad.

[0044] Further, see Figure 4The detection device further includes a base plate 50, on which the DC motor 10 and the slide rail 41 are both arranged. The DC motor 10 and the slide rail 41 are both fixed to the base plate 50 by bolt and nut assemblies. The motor drive line 12 connected to the DC motor 10 is arranged at the bottom of the base plate 50, and is used to drive the DC motor 10 to rotate. The speed of the DC motor 10 can be adjusted by adjusting the output voltage of the motor drive line 12. Since adjusting the speed of the DC motor 10 by adjusting the output voltage of the motor drive line 12 is a very mature technology, the working principle will not be described one by one here.

[0045] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A detection device, characterized in that: include: A DC motor (10), wherein the DC motor (10) can be controlled to rotate at different speeds; a marking block (20), the marking block (20) being arranged on the DC motor (10) and rotating synchronously with the DC motor (10), and at least three trigger structures being arranged on the marking block (20) at even intervals; A sliding assembly (40), wherein the sliding assembly (40) is arranged on the peripheral side of the marking block (20), a rotation speed sensor (30) is arranged on the sliding assembly (40), and the rotation speed sensor (30) can move in a direction approaching or moving away from the marking block (20) through the sliding assembly (40); When the marking block (20) rotates one revolution along with the DC motor (10), the rotation speed sensor (30) can be triggered at least three times.

2. The detection device according to claim 1, characterized in that: The DC motor (10) is provided with a plug-in shaft (11) at its center, and the marking block (20) is provided with a plug-in hole (21) at its center; the plug-in shaft (11) cooperates with the plug-in hole (21) so that the marking block (20) can be plugged onto the DC motor (10).

3. The detection device according to claim 1, characterized in that: The marking block (20) comprises a multi-faceted right prism, and the connection between two adjacent faces of the multi-faceted right prism serves as the trigger structure.

4. The detection device according to claim 1, characterized in that: The sliding assembly (40) comprises a sliding rail (41), a sliding block (42) and a driving handle (43); the sliding rail (41) is arranged on the peripheral side of the marking block (20); the sliding block (42) is slidably connected with the sliding rail (41); the rotation speed sensor (30) is arranged on the sliding block (42); and the driving handle (43) can drive the sliding block (42) to move in a direction approaching or moving away from the marking block (20) so as to adjust the distance between the rotation speed sensor (30) and the marking block (20).

5. The detection device according to claim 4, characterized in that: The sliding assembly (40) further comprises a first rod (44) and a second rod (45), wherein one end of the first rod (44) is fixedly connected to the driving handle (43) and the other end is rotatably connected to the second rod (45), and the other end of the second rod (45) is rotatably connected to the sliding block (42).

6. The detection device according to claim 4, characterized in that: The sliding block (42) is provided with a locking assembly, and the rotation speed sensor (30) is fixed to the sliding block (42) via the locking assembly.

7. The detection device according to claim 6, characterized in that: The locking assembly comprises a locking plate (421) and a support member (422); the support member (422) is provided with two through holes spaced apart in a vertical direction; the rotation speed sensor (30) can selectively pass through one of the through holes and then be locked by the locking plate (421) to change the position of the rotation speed sensor (30) in the vertical direction.

8. The detection device according to claim 7, characterized in that: A flexible anti-wear component is provided between the locking assembly and the rotation speed sensor (30).

9. The detection device according to claim 4, characterized in that: The detection device also includes a bottom plate (50), and the DC motor (10) and the slide rail (41) are both arranged on the bottom plate (50).

10. The detection device according to any one of claims 1 to 9, characterized in that: The distance between the rotation speed sensor (30) and the marking block (20) is 0.6 mm-0.8 mm.

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