Precision detection device of diesel engine advance angle positioning equipment

Abstract

The utility model discloses a precision detection device for diesel engine advance angle positioning equipment, which comprises an encoder which is supported by a supporting device and can realize precision detection of the advance angle positioning equipment along with rotation of an equipment driving assembly of the advance angle positioning equipment, and the encoder is connected with one end of a shaft through a coupler. The other end of the shaft is connected with an equipment driving assembly through a connecting flange plate; the supporting device comprises a mounting plate III for hinging a shaft, a bracket for fixing an encoder is mounted on one side of the mounting plate III, mounting plates II are respectively fixed at two ends of the other side of the mounting plate III, and the other ends of the mounting plates II are fixed on the advance angle positioning equipment; the device is small in overall size, is light in weight, and can achieve the precision measurement of the diesel engine advance angle positioning equipment in a production field.

Description

Technical Field

[0001] The utility model relates to a precision detection device for diesel engine advance angle positioning equipment, belonging to the technical field of equipment detection. Background Art

[0002] When assembling the fuel injection pump of a water-cooled diesel engine, the fuel supply advance angle needs to be adjusted to ensure that the diesel engine's emission performance and other requirements meet the use requirements. An advance angle positioner is usually used to rotate the diesel engine crankshaft to the corresponding position. The original advance angle positioner uses manual turning to find the fuel supply advance angle, which has problems such as low work efficiency and poor accuracy. In order to ensure the quality of installation and improve production efficiency, a new set of advance angle positioning equipment has been redesigned and manufactured.

[0003] The new advance angle positioning equipment includes a servo reduction motor, an incremental servo encoder, a device drive component and a control system. The servo reduction motor drives the device drive component to drive the diesel engine crankshaft to rotate to the advance angle position. At the same time, the incremental servo encoder monitors the rotation angle of the diesel engine crankshaft in real time and transmits the measurement results to the control system to realize the functions of automatically driving the diesel engine crankshaft to rotate and automatically calculating the crankshaft angle, thereby realizing the positioning of the fuel supply advance angle.

[0004] The new advance angle positioning equipment needs to be tested for its accuracy regularly. However, due to the complex structure and large number of parts of the new advance angle positioning equipment, it is impossible to send the entire set of equipment to a professional testing center for accuracy testing. In addition, the new advance angle positioning equipment is a non-standard equipment, and the relevant testing agencies do not have dedicated testing equipment to perform on-site accuracy testing on it. Therefore, it is particularly important to design and manufacture a device that can perform on-site accuracy testing on the diesel engine advance angle positioning equipment. Utility Model Content

[0005] The utility model provides a precision detection device for diesel engine advance angle positioning equipment to solve the above technical problems. The utility model has small overall size and light weight, and can realize precision measurement of diesel engine advance angle positioning equipment at the production site.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: it includes an encoder supported by a supporting device and can realize the precision detection of the advance angle positioning device as the device driving component of the advance angle positioning device rotates, the encoder is connected to one end of the shaft through a coupling, and the other end of the shaft is connected to the device driving component through a connecting flange; the supporting device includes a mounting plate III for the articulated shaft, a bracket for fixing the encoder is installed on one side of the mounting plate III, and mounting plates II are respectively fixed at both ends of the other side, and the other end of the mounting plate II is fixed to the advance angle positioning device.

[0007] A further improvement of the technical solution of the utility model is that: an equipment mounting plate is provided on the advance angle positioning device, and the mounting plate II is fixed on the equipment mounting plate.

[0008] A further improvement of the technical solution of the utility model is that: a mounting plate I perpendicular to the mounting plate II is provided at the end of the mounting plate II, and the mounting plate I is fixed to the equipment mounting plate by bolts and cylindrical pins.

[0009] A further improvement of the technical solution of the utility model is that the shaft and the mounting plate III are hinged via a bearing, and a mounting hole for mounting the bearing is provided on the mounting plate III.

[0010] A further improvement of the technical solution of the utility model is that a nut having a fixing function is arranged on the shaft on one side of the bearing.

[0011] A further improvement of the technical solution of the utility model is that the mounting plate I and the mounting plate II, the mounting plate II and the mounting plate III, the mounting plate III and the bracket, the bracket and the encoder, and the shaft and the connecting flange are all connected by bolts.

[0012] A further improvement of the technical solution of the utility model is that: the encoder is connected to an external detection instrument.

[0013] Due to the adoption of the above technical solution, the technical progress achieved by the utility model is:

[0014] The utility model has a small overall size and a light weight, and can realize the precision measurement of the diesel engine advance angle positioning equipment at the production site; at the same time, the utility model can also be packaged as a whole and sent to the testing center for regular precision testing, so as to ensure the measurement accuracy of the testing device, and ultimately achieve the purpose of ensuring the accuracy of the advance angle positioning equipment.

[0015] The main structure of the utility model is formed by combining common machined plates and standard parts, and the overall structure is simple, the cost is low, and it is convenient to replace wearing parts.

[0016] The main design of the utility model is mainly based on the structural characteristics of the diesel engine advance angle positioning device, and adopts a fixing method of bolts and positioning pins, so that rapid installation and disassembly can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model when in use;

[0018] Figure 2 It is a schematic diagram of the structure of the utility model before use;

[0019] Figure 3 It is a schematic diagram of the left side structure of the utility model before use;

[0020] Among them, 1. Equipment mounting plate; 2. Mounting plate I; 3. Mounting plate II; 4. Mounting plate III; 5. Bracket; 6. Encoder; 7. Coupling; 8. Shaft; 9. Nut; 10. Bearing; 11. Connecting flange; 12. Equipment drive assembly. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the embodiments:

[0022] like Figure 1 As shown, a precision detection device for diesel engine advance angle positioning equipment includes an encoder 6, which is supported by a support device and can rotate with the device driving assembly 12 of the advance angle positioning device to detect the precision of the advance angle positioning device. The encoder 6 is connected to one end of the shaft 8 through a coupling 7, and the other end of the shaft 8 is connected to a connecting flange 11 through a hexagon socket bolt. The surface of the connecting flange 11 has three bolt holes and four positioning holes. The main body of the utility model is small in size and light in weight, and can realize the precision measurement of the diesel engine advance angle positioning device at the production site, and can also be packaged as a whole and sent to the inspection center for regular precision inspection.

[0023] The supporting device includes a bracket 5 for fixing the encoder, a rectangular equipment mounting plate Ⅲ4 with a mounting hole in the middle, two rectangular mounting plates Ⅱ3 and two mounting plates Ⅰ2. The overall structure is simple, the cost is low, and it is convenient to replace the wearing parts. The bracket 5 is fixed to the outside of the equipment mounting plate Ⅲ4 by hexagon socket bolts, the two ends of the inner side of the equipment mounting plate Ⅲ4 are fixed with mounting plates Ⅱ3 by hexagon socket bolts, and the other end of the mounting plate Ⅱ3 is fixed with mounting plate Ⅰ2 by hexagon socket bolts. The mounting hole of the mounting plate Ⅲ4 is provided with a bearing 10 for articulating the shaft 8, and the shaft 8 is provided with a nut 9 for fixing, and the nut 9 is located between the bearing 10 and the coupling 7.

[0024] The mounting plate Ⅰ2 is provided with a hexagon socket bolt, and a cylindrical pin is fixed at the end of the bolt. The cylindrical pin is located in the mounting hole on the equipment mounting plate 1. One end of the diesel engine crankshaft is the equipment drive assembly 12. The surface of the equipment drive assembly 12 also has three bolt holes and four positioning holes. The equipment drive assembly 12 and the connecting flange 11 are connected by bolts and positioning pins, and the installation and removal are fast and convenient. The encoder 6 has a connector, and the connector has a data cable, which is connected to the encoder amplifier of the advance angle positioning device for use.

[0025] Instructions for use: During installation, first insert two cylindrical pins into the mounting holes of the equipment mounting plate 1, then align the positioning holes on the connecting flange 11 and the positioning holes on the equipment drive assembly 12, insert four positioning pins into the positioning holes, and then screw three hexagon socket bolts into the bolt holes, and connect the data cable of the connector on the encoder 6 to the encoder amplifier of the advance angle positioning device.

[0026] When in use, the servo encoder and encoder 6 on the advance angle positioning device are calibrated to zero at the same time, the control button on the advance angle positioning device is turned on, and the device drive component 12 is driven to rotate forward and reverse through the rotation of the servo motor of the advance angle positioning device. The 6 parameters of the servo encoder on the advance angle positioning device and the encoder of the utility model are observed to verify the accuracy of the advance angle positioning device.

Claims

1. A precision detection device for a diesel engine advance angle positioning device, characterized in that: The invention comprises an encoder (6) supported by a supporting device and capable of rotating with a device driving component (12) of the advance angle positioning device to realize precision detection of the advance angle positioning device, wherein the encoder (6) is connected to one end of a shaft (8) via a coupling (7), and the other end of the shaft (8) is connected to the device driving component (12) via a connecting flange (11); the supporting device comprises a mounting plate III (4) for articulating the shaft (8), a bracket (5) for fixing the encoder (6) is mounted on one side of the mounting plate III (4), and mounting plates II (3) are respectively fixed at both ends of the other side, and the other end of the mounting plate II (3) is fixed to the advance angle positioning device.

2. The precision detection device for the diesel engine advance angle positioning device according to claim 1, characterized in that: The advance angle positioning device is provided with a device mounting plate (1), and the mounting plate II (3) is fixed on the device mounting plate (1).

3. The precision detection device for the diesel engine advance angle positioning device according to claim 2, characterized in that: The end of the mounting plate II (3) is provided with a mounting plate I (2) perpendicular thereto, and the mounting plate I (2) is fixed to the equipment mounting plate (1) by means of bolts and cylindrical pins.

4. The precision detection device for the diesel engine advance angle positioning device according to claim 1, characterized in that: The shaft (8) and the mounting plate III (4) are hingedly connected via a bearing (10), and a mounting hole for mounting the bearing (10) is provided on the mounting plate III (4).

5. The precision detection device for the diesel engine advance angle positioning device according to claim 4, characterized in that: A nut (9) for fixing is arranged on the shaft (8) on one side of the bearing (10).

6. The precision detection device for diesel engine advance angle positioning equipment according to claim 1, characterized in that: The mounting plate I (2) and the mounting plate II (3), the mounting plate II (3) and the mounting plate III (4), the mounting plate III (4) and the bracket (5), the bracket (5) and the encoder (6), and the shaft (8) and the connecting flange (11) are all connected by bolts.

7. The precision detection device for diesel engine advance angle positioning equipment according to claim 1, characterized in that: The encoder (6) is connected to an external detection instrument.

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