CN210371122U - Test equipment capable of reducing coupling resonance in performance test process of air compressor - Google Patents

Abstract

The utility model discloses a can slow down resonant test equipment of coupling among air compressor machine capability test process belongs to mechanical engineering technical field. The utility model discloses an experiment rack, motor, balanced damper, headstock and wait to detect the air compressor machine and connect all to fix on the experiment rack, balanced damper middle part is equipped with the shaft hole, the power output shaft of motor passes balanced damper's shaft hole is connected with the power input end of headstock, and the headstock is connected with waiting to detect the air compressor machine through waiting to detect the air compressor machine and connect, and the power take off end of headstock with wait to detect the main shaft of air compressor machine and be connected. The coupling can slow down resonance generated in the coupling transmission process and reduce damage of the resonance to the torque sensor and the transmission shaft.

Description

Test equipment capable of reducing coupling resonance in performance test process of air compressor

Technical Field

The utility model relates to a can slow down resonant test equipment of coupling among air compressor machine capability test process belongs to mechanical engineering technical field.

Background

The air compressor for the automobile is used as a main component of an automobile braking system, and performance parameters of the air compressor directly influence the working state of the braking system, so that the performance parameters of the whole automobile are influenced. When the air compressor for the automobile is used for bench dynamic test in a test room, generally, only the air compressor body is subjected to bench test.

The bench test usually adopts a coupling connection mode, and an air compressor, a torque sensor and a motor for the automobile to be tested are generally connected through a key connection or expansion coupling sleeve and a transmission shaft. Because the shaft ends of the air compressor and the motor are not connected by a complete transmission shaft and the shaft centers can not be accurately ensured to be consistent in the installation process, the shaft ends of the connecting parts can be frequently changed due to the operation of the sample piece to be tested in the test process, the impact is strong, and the resonance phenomenon is generated. Especially under the condition of high-speed or strong-load operation, resonance brings great damage to the torque sensor, and the transmission shaft is easy to break as a weak link of the whole transmission system. Whether the torque sensor or the transmission shaft is damaged, the torque sensor or the transmission shaft needs to be repaired or even replaced, and the method is long in construction period, high in cost and large in workload.

Disclosure of Invention

The utility model provides a can slow down the resonant test equipment of coupling among the air compressor machine capability test process, it can slow down the resonance that produces among the coupling transmission process, reduces the damage of resonance to torque sensor and transmission shaft.

The utility model solves the technical problem through the following technical proposal,

the utility model provides a can slow down test equipment of shaft coupling resonance among air compressor machine capability test process, includes experiment rack, motor, balanced damper, headstock and waits to detect the air compressor machine and connect, motor, balanced damper, headstock and wait to detect the air compressor machine and connect all to fix on the experiment rack, balanced damper middle part is equipped with the shaft hole, the power output shaft of motor passes balanced damper's shaft hole is connected with the power input end of headstock, and the headstock is connected with waiting to detect the air compressor machine through waiting to detect the air compressor machine and connect, and the power output end of headstock is connected with the main shaft of waiting to detect the air compressor machine, still is equipped with torque sensor between motor and the balanced damper.

According to the test equipment capable of reducing coupling resonance in the performance test process of the air compressor, the balance damping mechanism comprises a balance outer disc and a balance inner disc, a disc is arranged in the middle of the balance inner disc, a shaft hole is formed in the middle of the disc, and N wedge-shaped blocks are uniformly distributed on the outer edge of the disc; 2N fixing blocks are arranged on one side of the balance outer disc, the fixing blocks are uniformly distributed along the edge of the balance outer disc, the edge of each fixing block, facing the corresponding shaft hole, is arc-shaped, the arc-shaped edge forms a circular groove with discontinuous edges in the middle of the balance outer disc, the middle of the circular groove is provided with the shaft hole, the diameter of the circular disc of the balance inner disc is the same as that of the circular groove of the balance outer disc, the circular disc of the balance inner disc is embedded into the circular groove of the balance outer disc, and the wedge-shaped blocks are located in gaps among the fixing blocks and can slide between the fixing blocks; a pressure spring is arranged between the wedge-shaped block and the fixed block, and two ends of the pressure spring are respectively connected with the wedge-shaped block and the fixed block.

Above-mentioned can slow down the resonant test equipment of coupling among the air compressor machine capability test process, still be equipped with fixing bolt, the both sides of wedge all are equipped with the blind hole, the fixed block middle part is equipped with the screw that runs through both sides, the both ends of pressure spring stretch into respectively the blind hole of wedge and the one end of the screw of fixed block, the other end spiro union of screw has fixing bolt, and the end fixing of pressure spring is between fixing bolt and screw.

Above-mentioned can slow down the test equipment of coupling resonance among the air compressor machine capability test in-process, balanced outer dish and balanced inner disc are clearance fit with the power take off shaft of motor.

Compared with the prior art, the utility model discloses the transmission resonance that produces under high-speed or high load running condition when can alleviating the experiment as far as possible to satisfy the performance parameter test work of air compressor under each rotational speed condition. The method is beneficial to verifying the technical parameters of the newly developed air compressor, provides powerful data support for developing new products, and further improves economic benefits. Meanwhile, the tool has the characteristics of low cost, simplicity, convenience and obvious resonance relieving effect. The method is suitable for small-batch sampling test.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the transmission outer disc of the present invention;

fig. 3 is a schematic structural diagram of the transmission inner disc of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is a schematic structural view of the balance damping mechanism of the present invention;

FIG. 6 is a partial cross-sectional view of the balance dampening mechanism of the present invention;

reference numerals in the drawings denote: 1. the test bench comprises an experiment bench, 2. a motor, 3. a balance damping mechanism, 4. a spindle box, 5. a joint of the air compressor to be detected, 6. a balance outer disc, 7. a balance inner disc, 8. a disc, 9. a circular groove, 10. a wedge-shaped block, 11. a fixed block, 12. a screw hole, 13. a blind hole, 14. a torque sensor, 15. a fixed bolt and 16. a pressure spring.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are provided to illustrate the invention.

As shown in fig. 1 to 5, the utility model discloses a test bench 1, motor 2, balanced damper 3, headstock 4 and wait to detect air compressor machine and connect 5 and all fix on test bench 1, headstock 4 is connected with waiting to detect the air compressor machine through waiting to detect air compressor machine and connecting 5, and the power take off end of headstock 4 is connected with the main shaft that waits to detect the air compressor machine. A torque sensor 14 is also arranged between the motor 2 and the balance damping mechanism. The balance damping mechanism 3 comprises a balance outer disc 6 and a balance inner disc 7, a disc 8 is arranged in the middle of the balance inner disc 7, a shaft hole is formed in the middle of the disc 8, N wedge-shaped blocks 10 are uniformly distributed on the outer edge of the disc 8, and the value range of N is two to seven, preferably four; 2N fixing blocks 11 are arranged on one side of the balance outer disc 6, the fixing blocks 11 are uniformly distributed along the edge of the balance outer disc 6, the edge of each fixing block 11 facing to a shaft hole is arc-shaped, the arc-shaped edge forms a circular groove 9 with discontinuous edges in the middle of the balance outer disc 6, the middle of each circular groove 9 is provided with the shaft hole, the diameter of each disc 8 of the balance inner disc 7 is the same as that of each circular groove 9 of the balance outer disc 6, each disc 8 of the balance inner disc 7 is embedded into each circular groove 9 of the balance outer disc 6, and each wedge block 10 is located in a gap between the fixing blocks 11 and can slide between the fixing blocks; a pressure spring 16 is arranged between the wedge block 10 and the fixed block 11, and two ends of the pressure spring 16 are respectively connected with the wedge block 10 and the fixed block 11. And a power output shaft of the motor 2 penetrates through shaft holes of the balance outer disc 6 and the balance inner disc 7 to be connected with a power input end of the spindle box 4, and the balance outer disc 6 and the balance inner disc 7 are in clearance fit with the power output shaft of the motor 2. Through the arrangement, when the motor runs at a high speed or runs at a high load and resonates due to factors such as axial float, radial float and alignment tolerance of each connecting disc and each transmission shaft, the compression spring on one side of the wedge block can be compressed and deformed due to certain pressing force in the rotating process of the balance damping mechanism matched with the transmission shaft, so that the compression spring is transferred to the balance outer disc, abnormal torsion generated is relieved, and the torque sensor and the transmission shaft are protected.

As shown in fig. 6, in order to ensure the stability of the connection between the spring and the balance inner disc and the balance outer disc, a fixing bolt 15 is further provided, blind holes 13 are provided on both sides of the wedge-shaped block 10, screw holes 12 penetrating through both sides are provided in the middle of the fixing block 11, both ends of the pressure spring 16 respectively extend into the blind holes 13 of the wedge-shaped block 10 and one end of the screw hole 12 of the fixing block 11, the other end of the screw hole 12 is screwed with a fixing bolt 15, and the end of the pressure spring 16 is fixed between the fixing bolt 15 and the screw hole 12. Through the arrangement, the pressure spring can be stably fixed between the blind hole of the wedge block and the screw hole of the fixing block, the pressure spring is prevented from being separated, and the stability of the structure is guaranteed.

The working process is as follows, before the test, the air compressor to be detected is connected with the spindle box through the air compressor connector 5 to be detected, then the motor is started, the power output shaft of the motor 2 passes through the torque sensor and the balance damping mechanism and then drives the spindle box to operate, the spindle box drives the air compressor to operate, and other detection mechanisms detect and record performance parameters of the air compressor. The compression spring on one side of the wedge block can be compressed and deformed due to pressing force by means of resonance generated in the process, so that the resonance torsion is transferred to the balance outer disc through the compression spring, the generated abnormal torsion is relieved, and the torque sensor and the transmission shaft are protected.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (4)

1. A test device capable of reducing coupling resonance in the performance test process of an air compressor is characterized by comprising a test bench (1), a motor (2), a balance damping mechanism (3), a spindle box (4) and a joint (5) of the air compressor to be detected, the motor (2), the balance damping mechanism (3), the spindle box (4) and the joint (5) of the air compressor to be detected are all fixed on the test bench (1), the middle part of the balance damping mechanism (3) is provided with a shaft hole, the power output shaft of the motor (2) penetrates through the shaft hole of the balance damping mechanism (3) to be connected with the power input end of the main shaft box (4), the main shaft box (4) is connected with the air compressor to be detected through the joint (5) of the air compressor to be detected, and the power output end of the main shaft box (4) is connected with a main shaft of the air compressor to be detected, and a torque sensor (14) is arranged between the motor (2) and the balance damping mechanism (3).

2. The test equipment capable of reducing coupling resonance in the performance test process of the air compressor as claimed in claim 1, wherein the balance damping mechanism (3) comprises a balance outer disc (6) and a balance inner disc (7), a disc (8) is arranged in the middle of the balance inner disc (7), a shaft hole is formed in the middle of the disc (8), and N wedge blocks (10) are uniformly distributed on the outer edge of the disc (8); 2N fixing blocks (11) are arranged on one side of the balance outer disc (6), the fixing blocks (11) are uniformly distributed along the edge of the balance outer disc (6), the edge of each fixing block (11) facing to the shaft hole is arc-shaped, the arc-shaped edge surrounds a circular groove (9) with discontinuous edge in the middle of the balance outer disc (6), the middle of each circular groove (9) is provided with the shaft hole, the diameter of a disc (8) of the balance inner disc (7) is the same as that of the circular groove (9) of the balance outer disc (6), the disc (8) of the balance inner disc (7) is embedded into the circular groove (9) of the balance outer disc (6), and the wedge-shaped block (10) is located in a gap between the fixing blocks (11) and can slide between the fixing blocks; a pressure spring (16) is arranged between the wedge block (10) and the fixed block (11), and two ends of the pressure spring (16) are respectively connected with the wedge block (10) and the fixed block (11).

3. The test equipment capable of slowing down coupling resonance in the performance test process of the air compressor according to claim 2, characterized in that fixing bolts (15) are further arranged, blind holes (13) are formed in both sides of the wedge-shaped block (10), screw holes (12) penetrating through both sides are formed in the middle of the fixing block (11), both ends of the pressure spring (16) respectively extend into one ends of the blind holes (13) of the wedge-shaped block (10) and the screw holes (12) of the fixing block (11), the other end of the screw hole (12) is connected with the fixing bolt (15) in a threaded manner, and the end portion of the pressure spring (16) is fixed between the fixing bolt (15) and the screw holes (12).

4. The test equipment capable of reducing coupling resonance in the performance test process of the air compressor as claimed in claim 3, wherein the balance outer disc (6) and the balance inner disc (7) are in clearance fit with the power output shaft of the motor (2).

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