Engine rotating speed sensor detection device

Abstract

The utility model discloses an engine rotating speed sensor detection device, and belongs to the field of sensor detection. According to the technical scheme, the engine rotating speed sensor detection device comprises a balance weight base, a signal wheel rotating mechanism and a radial feeding mechanism, and the radial feeding mechanism and the signal wheel rotating mechanism are sequentially arranged on the upper end face of the balance weight base at intervals in the length direction of the balance weight base. A fixing mechanism is arranged on the radial feeding mechanism, and is used for fixing the rotating speed sensor so that the detection end of the rotating speed sensor and the signal generation end of the signal wheel slewing mechanism are mutually induced; according to the utility model, the radial feeding mechanism and the signal wheel slewing mechanism can be stably supported through the counterweight base, so that vibration generated in the running state of the radial feeding mechanism and the signal wheel slewing mechanism is eliminated; therefore, the influence of vibration generated by operation of the radial feeding mechanism and the signal wheel slewing mechanism on the detection result is eliminated.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensor detection, and in particular relates to an engine speed sensor detection device. Background Art

[0002] The speed sensor is used to detect the engine speed, determine the position of the crankshaft, detect the piston top dead center signal and the crankshaft angle signal, and transmit the detected signal to the ECU to control the ignition time and injection timing. It is one of the indispensable and important components in the sensor technology of modern vehicles. The performance failure of the speed sensor will cause vehicle problems such as unstable idle speed, instantaneous flameout or parking, and speed deviation. Therefore, before the speed sensor product is put into use, its various performance indicators must be quickly, efficiently and accurately tested to ensure its performance qualification and reliability.

[0003] The prior art with application number 201521007571.4 discloses a Hall-type speed sensor performance test bench. The disadvantage of this technology is that the sensor and the electric spindle are fixed by simple brackets, etc., and the fluctuation of the sensor output signal caused by vibration at high speed is not considered. Utility Model Content

[0004] The utility model provides an engine speed sensor detection device to solve at least one of the above technical problems.

[0005] The technical solution adopted by the utility model is:

[0006] An engine speed sensor detection device includes a counterweight base, a signal wheel rotating mechanism, and a radial feeding mechanism. The radial feeding mechanism and the signal wheel rotating mechanism are arranged in sequence and at intervals on the upper end surface of the counterweight base along the length direction of the counterweight base. A fixing mechanism is provided on the radial feeding mechanism. The fixing mechanism is used to fix the speed sensor so that the detection end of the speed sensor and the signal generating end of the signal wheel rotating mechanism are mutually sensed.

[0007] Preferably, the radial feeding mechanism is provided with a radial displacement grating scale assembly for detecting the moving distance.

[0008] Preferably, the signal wheel rotating mechanism is provided with a circular grating component for detecting the rotation speed of the signal wheel rotating mechanism.

[0009] Preferably, a plurality of lifting and adjusting parts are provided at the bottom of the counterweight base, and the lifting and adjusting parts include a hydraulic telescopic cylinder, and the hydraulic telescopic cylinder has a fixed end and a telescopic end, the fixed end is welded and fixed to the bottom of the counterweight base, and the telescopic end is fixedly connected to a supporting washer.

[0010] Preferably, the signal wheel rotating mechanism comprises a rotary motor, the counterweight base is provided with a mounting groove for mounting the rotary motor, the output end of the rotary motor is provided with a motor shaft, and the motor shaft is detachably connected with a signal wheel component.

[0011] Preferably, the radial feeding mechanism comprises a horizontal guide rail, a sliding seat is slidably connected to the horizontal guide rail, the fixing mechanism is fixed on the sliding seat, and the counterweight base is provided with a driving part for driving the sliding seat to slide along the horizontal guide rail.

[0012] Preferably, the driving part comprises a driving motor, an output end of the driving motor is fixedly connected with a lead screw, and the lead screw passes through the sliding seat and is threadedly connected to the sliding seat.

[0013] Preferably, the fixing mechanism comprises a fixing bracket, the fixing bracket is L-shaped, the lower end of the fixing bracket is welded and fixed to the sliding seat, the upper end of the fixing bracket is provided with an installation window, and a clamping component for clamping the speed sensor is slidably connected in the installation window.

[0014] Preferably, the clamping assembly includes a clamping plate, which is slidably connected to the installation window, and the fixed bracket is provided with a driving member for driving the clamping plate to slide, and the fixed bracket is slidably connected with a limiting rod for limiting the clamping plate.

[0015] Preferably, a supporting plate is provided at the bottom of the installation window.

[0016] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0017] 1. Before using this detection device to check the speed sensor, the staff will place the detection device on a flat ground to ensure that the counterweight base is placed stably to prevent the counterweight base from shaking during the operation of the detection device, which will have a certain impact on the detection accuracy.

[0018] The speed sensor is moved by the radial feeding mechanism, and the distance between the detection end of the speed sensor and the signal wheel rotating mechanism is adjusted to measure the sensing range of the speed sensor. The counterweight base can stably support the radial feeding mechanism and the signal wheel rotating mechanism, eliminate the vibration generated by the radial feeding mechanism and the signal wheel rotating mechanism in operation, and thus eliminate the influence of the vibration generated by the operation of the radial feeding mechanism and the signal wheel rotating mechanism on the detection results.

[0019] 2. As a preferred embodiment of the present invention, the distance between the signal wheel and the speed sensor can be accurately displayed by setting the radial displacement grating scale assembly, and the distance detection has high accuracy, thereby improving the accuracy of the speed sensor detection result. The rotation speed of the signal wheel can be accurately detected by setting the circular grating assembly. The rotation speed detected by the speed sensor is compared with the speed detected by the circular grating assembly to determine whether the data detected by the speed sensor is the same as the actual rotation speed of the signal wheel rotating mechanism, thereby determining whether the speed sensor is qualified.

[0020] 3. As a preferred embodiment of the present invention, the counterweight base can be adjusted to a horizontal state by the provision of a hydraulic telescopic cylinder to achieve stable support for the counterweight base and increase the accuracy of the test results. The stability of the support for the counterweight base can be further increased by the provision of a support pad.

[0021] 4. As a preferred embodiment of the present invention, the installation groove can be set to stably support the rotary motor, eliminate the vibration of the rotary motor in the working state, and increase the accuracy of the speed sensor parameter detection.

[0022] 5. As a preferred embodiment of the present invention, the driving unit drives the sliding seat to slide on the horizontal guide rail to adjust the distance between the detection end of the speed sensor and the signal wheel component, thereby adjusting the detection range of the speed sensor.

[0023] 6. As a preferred embodiment of the present invention, the inner diameter of the installation window is larger than the outer diameter of the common speed sensors on the market, so as to adapt to different types of speed sensors on the market. When installing the speed sensor, first insert the speed sensor into the installation window, and then adjust the detection end of the speed sensor to correspond to the signal wheel component. After the adjustment is completed, the sensor is clamped and fixed by the clamping assembly in conjunction with the inner wall of the installation window. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is one of the structural schematic diagrams of a specific implementation method of the utility model;

[0025] Figure 2 This is the second structural schematic diagram of a specific implementation method of the utility model.

[0026] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0027] In the attached picture:

[0028] 1. Counterweight base; 101. Hydraulic telescopic cylinder; 2. Horizontal guide rail; 3. Sliding seat; 301. Fixed bracket; 302. Installation window; 3021. Support pallet; 303. Clamp; 304. Driving part; 305. Limit rod; 4. Rotary motor; 401. Motor shaft; 5. Driving motor; 501. Lead screw; 6. Radial displacement grating scale assembly; 7. Circular grating assembly. DETAILED DESCRIPTION

[0029] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0031] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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, an electrical connection, or a communication; 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.

[0033] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0034] Reference Figure 1-2 An engine speed sensor detection device includes a counterweight base 1, a signal wheel rotating mechanism, and a radial feeding mechanism. The radial feeding mechanism and the signal wheel rotating mechanism are arranged in sequence and at intervals on the upper end surface of the counterweight base 1 along the length direction of the counterweight base 1. A fixing mechanism is provided on the radial feeding mechanism. The fixing mechanism is used to fix the speed sensor so that the detection end of the speed sensor and the signal generating end of the signal wheel rotating mechanism are mutually induced.

[0035] Before using this detection device to detect the speed sensor, the staff will place the detection device on a flat ground so that the counterweight base 1 can be placed stably to prevent the counterweight base 1 from shaking during the operation of the detection device, which will have a certain impact on the detection accuracy. After the staff clamps the speed sensor to be detected with the fixing mechanism, they move the speed sensor through the radial feeding mechanism and adjust the distance between the detection end of the speed sensor and the signal wheel rotating mechanism. This step can measure the sensing range of the speed sensor. Specifically, the signal wheel rotating mechanism is started, and the speed of the signal wheel is detected by the speed sensor. The speed sensor detection data is compared with the actual speed of the signal wheel. When the detection data is the same as the actual speed of the signal wheel, the sensing range of the speed sensor detection end meets the detection requirements for the signal wheel speed, and the speed detection results within this range are within the accurate range. The setting of the fixing mechanism can quickly install and disassemble the speed sensor to be detected, increasing the detection efficiency of batch detection of speed sensors. During the detection process, the counterweight base 1 can provide stable support for the radial feed mechanism and the signal wheel rotating mechanism, eliminate the vibration generated by the radial feed mechanism and the signal wheel rotating mechanism during operation, and thereby eliminate the impact of the vibration generated by the operation of the radial feed mechanism and the signal wheel rotating mechanism on the detection results.

[0036] As a preferred example of the counterweight base 1 in the above-mentioned embodiment, the counterweight base 1 is a marble base structure. The marble base structure has the characteristics of large mass, high lightness and good stability, which is beneficial to eliminate the vibration generated by the radial feeding mechanism and the signal wheel rotating mechanism during operation; and it is easy to obtain materials and low in cost, which is convenient for reasonable cost control.

[0037] As a preferred example of the above embodiment, refer to Figure 1-Figure 2 , a radial displacement grating ruler assembly 6 for detecting the moving distance is provided on the radial feeding mechanism. The setting of the radial displacement grating ruler assembly 6 facilitates the accurate display of the distance between the signal wheel and the speed sensor, and the distance detection has high accuracy, thereby improving the accuracy of the speed sensor detection result. A circular grating assembly 7 for detecting the speed of the signal wheel rotating mechanism is provided on the signal wheel rotating mechanism. The setting of the circular grating assembly 7 can accurately detect the speed of the signal wheel. The speed detected by the speed sensor is compared with the speed detected by the circular grating assembly 7, so as to know whether the data detected by the speed sensor is the same as the actual speed of the signal wheel rotating mechanism, and then determine whether the speed sensor is qualified.

[0038] As a preferred embodiment of the counterweight base 1, refer to Figure 1-Figure 2 The bottom of the counterweight base 1 is provided with several groups of lifting and adjusting parts, which include a hydraulic telescopic cylinder 101. The hydraulic telescopic cylinder 101 has a fixed end and a telescopic end. The fixed end is welded and fixed to the bottom of the counterweight base 1, and the telescopic end is fixedly connected with a supporting pad.

[0039] The counterweight base 1 can be adjusted to a horizontal state by the arrangement of the hydraulic telescopic cylinder 101 to achieve stable support for the counterweight base 1 and increase the accuracy of the detection result. The stability of the support for the counterweight base 1 can be further increased by the arrangement of the supporting pad.

[0040] The signal wheel rotating mechanism includes a rotary motor 4. A mounting groove for mounting the rotary motor 4 is provided on the counterweight base 1. A motor shaft 401 is provided at the output end of the rotary motor 4. A signal wheel component 8 is detachably connected to the motor shaft 401. The mounting groove setting can stably support the rotary motor 4, eliminate the vibration of the rotary motor 4 in the working state, and increase the accuracy of the speed sensor parameter detection. In addition, a high-precision angle grating is integrated in the motor shaft 401, which can accurately collect the angle signal of the rotation of the motor shaft 401, provide the precise rotation speed of the motor shaft 401, and the speed sensor detects the speed value to provide an accurate comparison example. Figure 1-2 As shown, the arrangement of the signal wheel component 8 can enable the rotation speed sensor to detect the rotation speed of the signal wheel component 8 through the principle of electromagnetic induction, which will not be elaborated herein.

[0041] As a specific implementation of the radial feeding mechanism, refer to Figure 1-Figure 2 The radial feeding mechanism includes a horizontal guide rail 2, a sliding seat 3 is slidably connected to the horizontal guide rail 2, a fixing mechanism is fixed on the sliding seat 3, and a driving part for driving the sliding seat 3 to slide along the horizontal guide rail 2 is provided on the counterweight base 1.

[0042] The driving unit drives the sliding seat 3 to slide on the horizontal guide rail 2 to adjust the distance between the detection end of the rotation speed sensor and the signal wheel component 8, thereby adjusting the detection range of the rotation speed sensor.

[0043] Specifically, the driving unit includes a driving motor 5, and the output end of the driving motor 5 is fixedly connected with a lead screw 501, which penetrates the sliding seat 3 and is threadedly connected to the sliding seat 3. The lead screw 501 is controlled to rotate by the driving motor 5, and the lead screw 501 drives the sliding seat 3 to slide on the horizontal guide rail 2 through the thread. The driving motor 5 is a forward and reverse motor with forward and reverse functions. For example, the output end of the driving motor 5 drives the lead screw 501 to rotate clockwise to drive the sliding seat 3 to slide in the direction close to the signal wheel component 8, and the driving motor 5 rotates counterclockwise, and the lead screw 501 drives the sliding seat 3 to slide in the direction away from the signal wheel component 8.

[0044] As a specific implementation of the fixing mechanism, refer to Figure 1-Figure 2 The fixing mechanism includes a fixing bracket 301, which is L-shaped. The lower end of the fixing bracket 301 is welded and fixed to the sliding seat 3. The upper end of the fixing bracket 301 is provided with an installation window 302. The installation window 302 is slidably connected to a clamping component for clamping the speed sensor.

[0045] It should be noted that the inner diameter of the installation window 302 is larger than the outer diameter of the common speed sensors on the market, so as to adapt to different types of speed sensors on the market. When installing the speed sensor, first insert the speed sensor into the installation window 302, and then adjust the detection end of the speed sensor to correspond to the signal wheel component 8. After the adjustment is completed, the sensor is clamped and fixed by the clamping assembly in conjunction with the inner wall of the installation window 302.

[0046] Specifically, the clamping assembly includes a clamping plate 303, which is slidably connected to the installation window 302. A driving member 304 for driving the clamping plate 303 to slide is provided on the fixed bracket 301, and a limiting rod 305 for limiting the clamping plate 303 is slidably connected to the fixed bracket 301.

[0047] The clamping plate 303 is driven to slide by the driving member 304, and the clamping plate 303 cooperates with the installation window 302 to clamp and fix the housing of the speed sensor. The setting of the limit rod 305 is convenient to increase the stability of the clamping plate 303 during the sliding process. It should also be noted that the specific structure of the driving member 304 is not limited in this application, and it can adopt any one of the following embodiments:

[0048] Embodiment 1: The driving member 304 adopts a screw structure, the screw is threadedly connected to the fixed bracket 301, and the end of the screw is rotatably connected to the clamping plate 303. The end of the screw away from the clamping plate 303 passes through the installation window 302 to the outside of the fixed bracket 301. The up and down sliding of the clamping plate 303 can be controlled by rotating the screw.

[0049] Embodiment 2: The driving member 304 adopts an electric push rod structure, which has a fixed end and a telescopic end. The fixed end is fixed to the inner side of the installation window 302, and the telescopic end is fixed to the clamping plate 303. The lifting and sliding of the clamping plate 303 is achieved by controlling the extension and retraction of the telescopic end of the electric push rod.

[0050] As a preferred example of the above embodiment, refer to Figure 1-Figure 2 A support plate 3021 is provided at the bottom of the installation window 302. The support plate 3021 is provided to stably support the speed sensor and increase the accuracy of the speed sensor detection result.

[0051] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0052] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0053] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. An engine speed sensor detection device, characterized in that: The invention comprises a counterweight base (1), a signal wheel rotating mechanism, and a radial feeding mechanism, wherein the radial feeding mechanism and the signal wheel rotating mechanism are sequentially arranged at intervals on the upper end surface of the counterweight base (1) along the length direction of the counterweight base (1), and a fixing mechanism is provided on the radial feeding mechanism, wherein the fixing mechanism is used to fix a rotation speed sensor so that a detection end of the rotation speed sensor and a signal generating end of the signal wheel rotating mechanism are mutually sensed.

2. The engine speed sensor detection device according to claim 1, characterized in that: The radial feeding mechanism is provided with a radial displacement grating scale component (6) for detecting the moving distance.

3. The engine speed sensor detection device according to claim 1, characterized in that: The signal wheel rotating mechanism is provided with a circular grating component (7) for detecting the rotation speed of the signal wheel rotating mechanism.

4. An engine speed sensor detection device according to any one of claims 1 to 3, characterized in that: The bottom of the counterweight base (1) is provided with a plurality of lifting adjustment parts, the lifting adjustment parts comprising a hydraulic telescopic cylinder (101), the hydraulic telescopic cylinder (101) having a fixed end and a telescopic end, the fixed end being welded and fixed to the bottom of the counterweight base (1), and the telescopic end being fixedly connected to a supporting washer.

5. An engine speed sensor detection device according to claim 1 or 3, characterized in that: The signal wheel rotating mechanism comprises a rotating motor (4); a mounting groove for mounting the rotating motor (4) is provided on the counterweight base (1); a motor shaft (401) is provided at the output end of the rotating motor (4); and a signal wheel component (8) is detachably connected to the motor shaft (401).

6. An engine speed sensor detection device according to claim 1 or 2, characterized in that: The radial feeding mechanism comprises a horizontal guide rail (2), a sliding seat (3) is slidably connected to the horizontal guide rail (2), the fixing mechanism is fixed on the sliding seat (3), and the counterweight base (1) is provided with a driving part for driving the sliding seat (3) to slide along the horizontal guide rail (2).

7. The engine speed sensor detection device according to claim 6, characterized in that: The driving part comprises a driving motor (5), the output end of the driving motor (5) is fixedly connected to a lead screw (501), and the lead screw (501) passes through the sliding seat (3) and is threadedly connected to the sliding seat (3).

8. The engine speed sensor detection device according to claim 1, characterized in that: The fixing mechanism comprises a fixing bracket (301), the fixing bracket (301) is L-shaped, the lower end of the fixing bracket (301) is welded and fixed to the sliding seat (3), the upper end of the fixing bracket (301) is provided with a mounting window (302), and a clamping component for clamping a rotation speed sensor is slidably connected in the mounting window (302).

9. The engine speed sensor detection device according to claim 8, characterized in that: The clamping assembly comprises a clamping plate (303), the clamping plate (303) is slidably connected to the installation window (302), a driving member (304) for driving the clamping plate (303) to slide is provided on the fixed bracket (301), and a limiting rod (305) for limiting the clamping plate (303) is slidably connected to the fixed bracket (301).

10. The engine speed sensor detection device according to claim 9, characterized in that: A supporting plate (3021) is provided at the bottom of the installation window (302).

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