Fuel booster pump motor electric brush running-in tool

Abstract

The utility model belongs to the technical field of motor brush running-in, and particularly relates to a fuel booster pump motor brush running-in tool which comprises a process shell, the process shell comprises a first shell and a second shell which are detachably connected, a motor shell internal assembly is arranged in the first shell, and a motor shell external assembly is arranged in the second shell. The motor shell internal assembly comprises an output shaft and an end cover, the end cover is tightly attached to the inner wall of the first shell, the second shell and the second shell are coaxially arranged, a bearing is arranged on the inner wall of the second shell, and the output shaft is tightly attached to the inner wall of the bearing and extends to the outer side of the second shell; and an observation opening is formed in the second shell. The tool is used for supporting internal components of a motor shell and replacing the shell of the motor, a carbon brush running-in test can be simply, efficiently and safely carried out with high quality, the running-in condition of an electric brush can be observed through an observation opening, and therefore the defects of an original process are overcome.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor brush running-in, in particular to a fuel booster pump motor brush running-in tool. Background Art

[0002] The motor type inside the fuel boost pump is a rare earth permanent magnet DC motor. As a type of DC motor, the operating performance of the rare earth permanent magnet DC motor is directly related to the operating safety of electronic equipment. It is classified into brushed motors and brushless motors.

[0003] This type of motor has the characteristics of high temperature and high speed in daily use environment. It is easy to cause carbon powder accumulation, armature and other faults after working for a period of time. Therefore, the running-in of carbon brushes is the top priority in daily maintenance and repair, and the carbon brushes are often required to be repaired through rough grinding, fine grinding and other processes. Among them, rough grinding manually contacts the sandpaper and commutator, installs the carbon brushes, and manually rotates the armature. The contact area of ​​the carbon brush can generally only reach the basic running-in state, and the running-in area is not more than 40%. Fine grinding is the most important process, which is to increase the contact area of ​​the brushes after rough grinding from the contact area after rough grinding to 75% or more to meet the technical requirements. According to the existing process means, fine grinding requires three steps to be coordinated as a whole; first, the overall assembly of the motor, then the overall assembly of the pump body, and finally the connection of the entire fuel boost pump to the test bench, and the overall running-in test is carried out. The fine grinding time specified by the process has the following difficulties:

[0004] 1. Low efficiency: The carbon brush running-in of this type of motor usually requires three steps of overall coordination; first, the overall assembly of the motor, then the overall assembly of the pump body, and finally the connection of the entire fuel boost pump to the test bench for an overall running-in test. The fine grinding and running-in time specified by the process is 100 hours, and the fine grinding time is time-consuming and the whole piece needs to be assembled. After assembly, it needs to be assembled to the test bench for a long time of carbon brush fine grinding, resulting in low production efficiency.

[0005] 2. Unable to monitor spark level: During the running-in process, the spark level of carbon brush and commutator needs to be monitored. The original process requires three steps for running-in of carbon brush: first, the overall assembly of the motor, then the overall assembly of the pump body, and finally the connection of the entire fuel booster pump to the test bench for overall running-in test. Since the entire product is installed in the test bench, it is embedded in the equipment, and there is fuel as the working medium inside, and only the outer wall of the pump body can be observed from the outside, the spark level of each fine grinding of the carbon brush cannot be directly observed, and the spark level technical parameters cannot be achieved. Therefore, if the spark level is too large in the actual production process, it is easy to cause the motor armature commutator to burn out and cause scrapping.

[0006] 3. Difficulty in assessing the carbon brush contact area: The carbon brush running-in of this type of motor usually requires three steps of overall coordination: first, the overall assembly of the motor, then the overall assembly of the pump body, and finally the connection of the entire fuel boost pump to the test bench for an overall running-in test. During the first assembly test and disassembly inspection, the carbon brush contact area often does not meet the standard. Therefore, it is necessary to repeat the assembly and run-in of the carbon brush. Finally, it is necessary to disassemble and assemble the product many times before the carbon brush contact area that meets the process requirements is achieved. Each disassembly, assembly, and testing process takes one day, so this work is extremely inconvenient.

[0007] 4. Very easy to cause secondary failure: The carbon brush running-in of the motor mentioned above usually requires three steps of overall coordination; first, the overall assembly of the motor, then the overall assembly of the pump body, and finally the connection of the entire fuel booster pump to the test bench for overall running-in test. Due to multiple disassembly, the necessary replacement parts and components may be damaged due to multiple disassembly, causing failure; because the carbon brush running-in takes a long time, the sealing leather cup inside the copper bearing may cause oil to enter the motor due to multiple disassembly and assembly, further causing the failure of this carbon brush fine grinding task.

[0008] 5. Safety hazards: The carbon brush running-in of the type of motor mentioned above usually requires three steps of overall coordination: first, the overall assembly of the motor, then the overall assembly of the pump body, and finally the connection of the entire fuel booster pump to the test bench for an overall running-in test. If the carbon brush contact area and spark level indicators do not meet the standards, secondary decomposition or multiple decompositions are required. Because the fuel of its working medium is kerosene, it is very easy to penetrate. If kerosene leaks into the motor due to repeated assembly, the motor is working with electricity, the spark is too large, and there is a risk of causing kerosene combustion, which poses certain safety hazards. Utility Model Content

[0009] In view of the technical problems existing in the background technology, the utility model provides a fuel booster pump motor brush running-in tool.

[0010] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0011] A fuel boost pump motor brush running-in tool comprises a process housing, the process housing comprises a first housing and a second housing which are detachably connected, a motor housing internal component is arranged inside the first housing, the motor housing internal component comprises an output shaft and an end cover, the end cover is arranged closely against the inner wall of the first housing, the first housing and the second housing are arranged coaxially, a bearing is arranged on the inner wall of the second housing, the output shaft is closely against the inner wall of the bearing and extends to the outside of the second housing; an observation port is opened on the second housing.

[0012] Optionally, a connecting portion 1 is provided on one side of the first shell, and a plurality of connecting holes 1 are evenly distributed on the circumference of the connecting portion 1; a connecting portion 2 is provided on one side of the second shell, and a plurality of connecting holes 2 are evenly distributed on the circumference of the connecting portion 2, the connecting holes 2 and the connecting holes 1 are arranged opposite to each other, and connecting bolts are provided in the connecting holes 1 and 2.

[0013] Optionally, a mounting hole is provided on the inner wall of the first shell, and a lead groove 1 connected to the mounting hole is provided on the connecting part 1; a positioning ring is provided at one end of the connecting part 2, and the outer wall of the positioning ring is arranged tightly against the outer wall of the mounting hole; a lead groove 2 is provided on the positioning ring, and the lead groove 2 and the lead groove 1 are arranged opposite to each other, and the wiring harness of the internal components of the motor shell is passed through the lead groove 1 and the lead groove 2 to the outside of the process shell.

[0014] Optionally, there are two connection holes one, and the angle between the line connecting the two connection holes one and the lead groove one is 45°; there are two connection holes two, and the angle between the line connecting the two connection holes two and the lead groove two is 45°.

[0015] Optionally, a positioning block is extended from the end face of the positioning ring, the positioning block and the second lead groove are arranged opposite to each other, and a slot is arranged on the outer wall of the internal component of the motor housing, and the positioning block is fitted and connected in the slot.

[0016] Optionally, a stepped hole is provided inside the second shell, and the stepped hole includes three hole sections with successively decreasing diameters. The bearing is arranged on the inner wall of the middle hole section. Two lubrication holes are provided on one side of the second shell, and the angle between the line connecting the two lubrication holes and the line connecting the two connecting holes is 45°, and the angle between the line connecting the guide groove 2 and the positioning block and the line connecting the two lubrication holes is 90°.

[0017] Optionally, the fuel boost pump motor brush running-in tooling further includes a chassis, a mounting seat is provided on the chassis, and the mounting seat is connected and fixed to the first shell; a slider is slidably provided on the chassis, a fixed block is slidably provided on the slider, and the fixed block is connected and fixed to the second shell; a fixing groove is provided inside the fixing block, an elastic connecting piece is provided in the fixing groove, and the other end of the elastic connecting piece is connected to the side wall of the slider.

[0018] Optionally, an L-shaped stopper is provided on the outer wall of the sliding block, and the stopper extends downward to the outer side of the sliding block.

[0019] Optionally, a guide groove is provided on the chassis, a telescopic mechanism is provided inside the chassis, and the telescopic mechanism is connected to a slide block for transmission.

[0020] The utility model has the following advantages and beneficial effects:

[0021] The brush running-in tool of the utility model is designed with a process housing according to the working environment and characteristics of the motor, which is used to support the internal components of the motor housing (stator, rotor, bearing, control system, cooling system, etc.) to replace the motor housing. In this way, there is no need to install and assemble the motor, and it can be directly assembled in the process housing. The running-in test environment is simple and safe. The external power is directly supplied and the wires are led out. There is no need to occupy the test bench and there is no need to assemble the electric centrifugal pump and the motor according to the original detection process. The carbon brush running-in test can be carried out simply, efficiently, with high quality and safely, and the running-in condition of the brush can be observed through the observation port, thereby solving the original process defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A front view of the internal components of the motor housing provided by the utility model;

[0023] Figure 2 for Figure 1 Right view of;

[0024] Figure 3 A cross-sectional view of the internal components of the motor housing and the process housing provided by the utility model;

[0025] Figure 4 A front view of a first housing provided by the utility model;

[0026] Figure 5 for Figure 4 Sectional view along the AA direction;

[0027] Figure 6 A front view of the second housing provided by the utility model;

[0028] Figure 7 for Figure 6 Right view of;

[0029] Figure 8 for Figure 7 Cross-sectional view along the BB direction;

[0030] Fig. 9 The overall structure diagram of the motor brush running-in tooling provided by the utility model;

[0031] Fig.10 A diagram showing the connection structure of the slider and the fixed block provided by the utility model;

[0032] Icons: 1-internal components of the motor housing, 11-end cover, 12-output shaft, 13-slot, 2-bearing, 3-first housing, 31-mounting hole, 32-connecting part one, 33-connecting hole one, 34-observation port, 35-lead groove one, 4-second housing, 41-connecting part two, 42-locating ring, 43-step hole, 44-lubrication hole, 45-lead groove two, 46-locating block, 47-connecting hole two, 5-connecting bolt, 6-fixing block, 61-elastic connecting part, 62-stopper, 63-limiting groove, 64-connecting groove, 7-chassis, 71-guide groove, 72-mounting seat, 8-motor, 81-bearing seat, 82-screw, 83-screw nut, 84-slider, 841-slide groove, 842-bump. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0035] Example

[0036] like Figures 1 to 8 As shown, a fuel boost pump motor brush running-in tooling includes a process housing, which includes a detachably connected first housing 3 and a second housing 4. The first housing 3 is provided with a motor housing internal component 1, which includes a stator, a rotor, a control system, a cooling system, a bearing 2, an output shaft 12, an end cover 11 and other components, but does not include a motor housing. The end cover 11 is arranged close to the inner wall of the first housing 3, the first housing 3 and the second housing 4 are arranged coaxially, the inner wall of the second housing 4 is provided with a bearing 2, the output shaft 12 is close to the inner wall of the bearing 2 and extends to the outside of the second housing 4; an observation port 34 is provided on the second housing 4 to facilitate observation of the grinding of the internal brushes.

[0037] like Figure 3-8As shown, further, a connecting portion 32 is provided on one side of the first shell 3, and a plurality of connecting holes 33 are evenly distributed on the circumference of the connecting portion 32; a connecting portion 41 is provided on one side of the second shell 4, and a plurality of connecting holes 47 are evenly distributed on the circumference of the connecting portion 41, and the connecting holes 47 and the connecting holes 33 are arranged opposite to each other, and connecting bolts 5 are arranged in the connecting holes 33 and the connecting holes 47, so as to connect and fix the first shell 3 and the second shell 4.

[0038] like Figure 3-9 As shown, further, the inner wall of the first housing 3 is provided with a mounting hole 31, and the connecting portion 1 32 is provided with a lead groove 1 35 connected to the mounting hole 31; a positioning ring 42 is provided at one end of the connecting portion 2 41, and the outer wall of the positioning ring 42 is arranged close to the outer wall of the mounting hole 31, so as to realize the coaxial arrangement of the first housing 3 and the second housing 4. The positioning ring 42 is provided with a lead groove 2 45, and the lead groove 2 45 and the lead groove 1 35 are arranged opposite to each other, so as to facilitate the wiring harness of the internal component 1 of the motor housing to be led out to the outside, and the wiring harness of the internal component 1 of the motor housing is passed through the lead groove 1 35 and the lead groove 2 45 to the outside of the process housing.

[0039] like Figure 4 As shown, there are two connection holes 33, and the angle between the connecting line of the two connection holes 33 and the lead groove 35 is 45°. The connection holes 33 and the lead groove 35 are staggered to ensure the strength of the first housing 3. Figure 7 As shown, there are two second connection holes 47, and the angle between the connecting line of the two second connection holes 47 and the second lead groove 45 is 45 degrees. The second connection holes 47 and the second lead groove 45 are staggered to avoid interference when the wire harness is led out.

[0040] like Figures 1 to 8 As shown, a positioning block 46 is extended from the end face of the positioning ring 42, and the positioning block 46 and the lead groove 45 are arranged opposite to each other. A slot 13 is arranged on the outer wall of the internal component 1 of the motor housing, and the positioning block 46 is matched and connected in the slot 13, so that the internal component 1 of the motor housing can be positioned and fixed inside the process housing to prevent the internal component 1 of the motor housing from rotating.

[0041] like Figure 1 , 7 As shown in Figures 1 and 8, a stepped hole 43 is provided inside the second housing 4. The stepped hole 43 includes three hole sections with decreasing diameters. The bearing 2 is provided on the inner wall of the middle hole section. Two lubrication holes 44 are provided on one side of the second housing 4. The angle between the connecting line of the two lubrication holes 44 and the connecting line of the two second connection holes 47 is 45°. The second connection holes 47 and the lubrication holes 44 are staggered to ensure the strength of the second housing 4. The angle between the connecting line of the second guide groove 45 and the positioning block 46 and the connecting line of the two lubrication holes 44 is 90°.

[0042] The brush running-in tool of the utility model is designed with a process housing according to the working environment and characteristics of the motor, which is used to support the internal components 1 of the motor housing (stator, rotor, bearing 2, control system, cooling system, etc.) to replace the motor housing. In this way, there is no need to install and assemble the motor, and it can be directly assembled in the process housing. The running-in test environment is simple and safe. The motor is directly powered on from the outside and the wires are led out. There is no need to occupy the test bench and there is no need to assemble the electric centrifugal pump and the motor according to the original detection process. The carbon brush running-in test can be carried out simply, efficiently, with high quality and safely, and the running-in condition of the brush can be observed through the observation port 34, thereby solving the original process defects.

[0043] like Fig. 9 , 10 As shown, the fuel booster pump motor brush running-in tool of the utility model also includes a chassis 7, a mounting seat 72 is provided on the chassis 7, and the mounting seat 72 is connected and fixed to the first housing 3; a guide groove 71 is provided on the chassis 7, and a slider 84 is slidably provided in the guide groove 71. A slide groove 841 is provided inside the slider 84, and a protrusion 842 is provided on the inner wall of both sides of the slide groove 841, and a limiting groove 63 is provided on both sides of the fixed block 6, and the shape of the limiting groove 63 is consistent with the shape of the protrusion 842. The protrusion 842 and the limiting groove 63 are arranged in a sliding manner, and the fixed block 6 is arranged in the slide groove 841, so that the fixed block 6 is slidably arranged on the slider 84. A connecting groove 64 is provided on the upper end of the fixed block 6, and the second housing 4 is fixedly arranged close to the connecting groove 64. A fixing groove is provided inside the fixed block 6, and an elastic connecting member 61, such as a spring, is provided in the fixing groove, and the other end of the elastic connecting member 61 is connected to the side wall of the slider 84. When the slider 84 slides, it drives the fixing block 6, the second shell 4 and the first shell 3 to connect, and then the connecting bolt 5 is inserted to lock. During the locking process, the second shell 4 will be pressed and moved a certain distance toward the first shell 3. During this period, the fixing block 6 can move relative to the slider 84, so that the elastic connecting member 61 is stretched, thereby realizing the connection and fixation of the first shell 3 and the second shell 4, and the slider 84 will no longer be affected after it stops.

[0044] Furthermore, an L-shaped stopper 62 is provided on the outer wall of the slider 84 , and the stopper 62 extends downward to the outer side of the slider 84 to limit the fixing block 6 and prevent the fixing block 6 and the slider 84 from being separated.

[0045] Furthermore, a telescopic mechanism is provided inside the chassis 7, and the telescopic mechanism is connected and driven with a slider 84. As a preferred mode, the telescopic mechanism is a screw slider mechanism, which includes a motor 8, a bearing seat 81, a screw 82, a screw nut 83, etc., two bearing seats 81 are fixed inside the chassis 7, the screw 82 is rotatably arranged in the bearing seat 81, the screw 82 is matched and connected with a screw nut 83, the slider 84 is connected with the screw nut 83, the screw 82 is connected and driven with the motor 8, and the motor 8 rotates to drive the slider 84 to move back and forth, so as to realize the docking and disassembly of the first shell 3 and the second shell 4.

[0046] The above are only preferred embodiments of the present invention and are 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 replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fuel booster pump motor brush running-in tool, including a process housing, characterized in that :The process shell includes a first shell and a second shell that are detachably connected, the interior of the first shell is provided with internal components of the motor shell, the internal components of the motor shell include an output shaft and an end cover, the end cover is arranged close to the inner wall of the first shell, the first shell and the second shell are arranged coaxially, the inner wall of the second shell is provided with a bearing, the output shaft is close to the inner wall of the bearing and extends to the outside of the second shell; the second shell is provided with an observation port.

2. The fuel booster pump motor brush running-in tooling according to claim 1, characterized in that: A connecting portion 1 is provided on one side of the first shell, and a plurality of connecting holes 1 are evenly distributed on the circumference of the connecting portion 1; a connecting portion 2 is provided on one side of the second shell, and a plurality of connecting holes 2 are evenly distributed on the circumference of the connecting portion 2, the connecting holes 2 and the connecting holes 1 are arranged opposite to each other, and connecting bolts are arranged in the connecting holes 1 and 2.

3. The fuel booster pump motor brush running-in tooling according to claim 2, characterized in that: The inner wall of the first shell is provided with a mounting hole, and the connecting part 1 is provided with a wire groove 1 connected with the mounting hole; one end of the connecting part 2 is provided with a positioning ring, and the outer wall of the positioning ring is arranged tightly against the outer wall of the mounting hole; the positioning ring is provided with a wire groove 2, and the wire groove 2 is arranged opposite to the wire groove 1, and the wiring harness of the internal components of the motor shell is passed through the wire groove 1 and the wire groove 2 to the outside of the process shell.

4. The fuel booster pump motor brush running-in tooling according to claim 3 is characterized in that: There are two connection holes one, and the angle between the line connecting the two connection holes one and the lead groove one is 45°; there are two connection holes two, and the angle between the line connecting the two connection holes two and the lead groove two is 45°.

5. The fuel booster pump motor brush running-in tooling according to claim 3, characterized in that: A positioning block is extended from the end surface of the positioning ring, and the positioning block and the second lead groove are arranged opposite to each other. A clamping groove is arranged on the outer wall of the internal component of the motor housing, and the positioning block is matched and connected in the clamping groove.

6. The fuel booster pump motor brush running-in tooling according to claim 5, characterized in that: A stepped hole is provided inside the second shell, and the stepped hole includes three hole sections with successively decreasing diameters. The bearing is arranged on the inner wall of the middle hole section. Two lubrication holes are provided on one side of the second shell. The angle between the connecting line of the two lubrication holes and the connecting line of the two connecting holes is 45°, and the angle between the connecting line between the guide groove 2 and the positioning block and the connecting line of the two lubrication holes is 90°.

7. The fuel booster pump motor brush running-in tooling according to claim 1, characterized in that: It also includes a chassis, which is provided with a mounting seat, and the mounting seat is connected and fixed to the first shell; a slider is slidably provided on the chassis, and a fixed block is slidably provided on the slider, and the fixed block is connected and fixed to the second shell; a fixing groove is provided inside the fixing block, and an elastic connecting piece is provided in the fixing groove, and the other end of the elastic connecting piece is connected to the side wall of the slider.

8. The fuel booster pump motor brush running-in tooling according to claim 7, characterized in that: An L-shaped stopper is arranged on the outer wall of the sliding block, and the stopper extends downward to the outer side of the sliding block.

9. The fuel booster pump motor brush running-in tooling according to claim 7, characterized in that: The chassis is provided with a guide groove, the interior of the chassis is provided with a telescopic mechanism, and the telescopic mechanism is connected with a slide block for transmission.

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