New energy automobile electronic vacuum pump performance detection device and detection method

Abstract

The invention relates to the technical field of vacuum pump detection, in particular to a new energy automobile electronic vacuum pump performance detection device and method. According to the technical scheme, the device comprises a detection table, the detection table is fixedly connected with a detection box, the interior of the detection box is movably matched with a piston, one end of the piston is fixedly connected with a fixing block, one end of the fixing block is fixedly connected with a limiting column, the limiting column movably penetrates through one end of the detection box, and the limiting column movably penetrates through a sealing ring. According to the vacuum pump, air flow of the vacuum pump body enters the detection box, injected air can drive the piston and the limiting column to move towards one side so as to extrude the pressure sensor, the contact frequency of the limiting column and the pressure sensor can be displayed through the displayer, and the detection accuracy is improved by repeatedly starting the vacuum pump body and recording the numerical value. And finally, through comparison with the numerical value of the display, whether the detected gas flow in the vacuum pump main body is stable or not can be judged.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum pump detection, and in particular to a performance detection device and a detection method for an electronic vacuum pump of a new energy vehicle. Background Art

[0002] Nowadays, the popularity of new energy vehicles is getting higher and higher, and most of the new energy vehicles are driven by electric motors, eliminating the traditional engine, and thus losing the vacuum source, that is, unable to provide vacuum assistance for the vehicle's brake master cylinder. Electric vehicles use electricity as the main power source of the vehicle, and it is difficult to use oil brakes, so only air brakes can be used. A vacuum pump will be installed on the vehicle to help brake, and the detection of the vacuum pump during the production process is particularly important. Most of the existing detection devices will detect the suction force of the vacuum pump and the flow rate and flow of the extracted gas, and it is difficult to detect the stability of the gas flow during the operation of the vacuum pump. The stability of the performance of the vacuum pump during operation is particularly important for the brake system. When the gas flow rate and flow rate fluctuate during the operation of the vacuum pump, it will directly affect the stability of the vehicle when braking. Therefore, the present application proposes a new energy vehicle electronic vacuum pump performance detection device and detection method. Summary of the invention

[0003] The purpose of the present invention is to propose a new energy vehicle electronic vacuum pump performance detection device and detection method to address the problem in the background technology that the stability of the performance of the vacuum pump during operation is particularly important for the brake system. When the gas flow and flow rate fluctuate during the operation of the vacuum pump, it will directly affect the stability of the vehicle during braking.

[0004] On the one hand, the present invention proposes a new energy vehicle electronic vacuum pump performance detection device, including a detection platform, a detection box is fixedly connected to the detection platform, a piston is movably matched inside the detection box, one end of the piston is fixedly connected to a first fixed block, one end of the first fixed block is fixedly connected to a first limiting column, the first limiting column and one end of the detection box are movably penetrated, a sealing ring is movably penetrated by the first limiting column, a first compression spring is sleeved on the outer peripheral surface of the first limiting column, one end of the first compression spring is in contact with the first fixed block, and the other end of the first compression spring is in contact with the detection box, a rectangular groove is opened on the detection platform, and a There is a detection device, a right-angle plate is fixedly connected to the detection box, an electric push rod is fixedly connected to the right-angle plate, one end of the electric push rod is sleeved on the air outlet, one end of the electric push rod is curved, the detection device includes a slider slidably connected to the rectangular groove, the slider is fixedly connected to the detection device, the detection device is fixedly connected to a second fixed block, the second fixed block is provided with a clamping groove, the clamping groove is sleeved with a second connecting block, the second connecting block is fixedly connected to a pressure sensor, the pressure sensor is connected to a display through a line, the display is rotatably connected to a fixed seat, and the fixed seat is fixedly connected to the detection table.

[0005] Optionally, a support block is fixedly mounted on the testing table, an arc-shaped groove is formed on the support block, a vacuum pump body is placed on the arc-shaped groove, and two sets of support legs are fixedly mounted on the testing table.

[0006] Optionally, a round hole is opened on the detection box, a first connecting block is fixedly connected to the detection box, a threaded sleeve is fixedly connected to the first connecting block, a box body is fixedly connected to the detection box, and a valve is fixedly connected to the box body.

[0007] Optionally, the threaded sleeve is threadedly connected with a stud, and one end of the stud is fixedly connected with a turntable.

[0008] Optionally, a connecting plate is movably penetrated on the turntable, and a connecting head is fixedly connected to the connecting plate.

[0009] Optionally, one end of the connector is connected to a connecting tube, and one end of the connecting tube is sleeved on a connecting port on the vacuum pump body.

[0010] Optionally, an adjustment mechanism is provided on the rectangular groove, the adjustment mechanism includes a group of limit sliders slidably connected to the rectangular groove, friction blocks are fixedly connected to the two limit sliders, the two friction blocks are slidably connected to the detection table, and extrusion plates are fixedly connected to the two limit sliders.

[0011] Optionally, a second limiting column is movably penetrated on the two limiting sliders, both ends of the second limiting column are movably penetrated with the friction block, the second limiting column is movably penetrated with the two friction blocks, and a second compression spring is sleeved on the outer surface of the second limiting column, and both ends of the second compression spring are in contact with the limiting sliders.

[0012] On the other hand, the present invention provides a method for detecting the performance of an electronic vacuum pump for a new energy vehicle, which is applied to the above electronic vacuum pump performance detection device. The method comprises the following steps:

[0013] Step 1: Place the vacuum pump body to be tested on the support block, and then connect one end of the connecting tube to the connecting port on the vacuum pump body;

[0014] Step 2: By rotating the turntable, the stud is driven to rotate, and the connecting plate is driven to move to one side under the action of the threaded sleeve, so that the connecting plate drives the connecting head to be sleeved on the round hole;

[0015] Step 3: Then, water is injected into the box to detect the air tightness of the connection between the connector and the round hole. After the detection is completed, the water inside the box is drained through the valve;

[0016] Step 4: When the vacuum pump body is powered on, the exhausted gas will be injected into the detection box, thereby squeezing the piston to move to one side, thereby driving the limit column to move to one side, thereby squeezing the first compression spring, and then contracting the electric push rod, so that the gas in the detection box can be discharged, so that under the action of the first compression spring, the piston and the first limit column are reset;

[0017] Step five, then adjust the limit slider to change the position of the friction block in contact with the rectangular groove, thereby adjusting the position of the slider in the rectangular groove, thereby changing the position of the pressure sensor. When one end of the first limit column contacts the pressure sensor, the pressure sensor will send an electrical signal to the display, and the display will show the number of times the first limit column contacts the pressure sensor.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] The present invention connects the vacuum pump body to the detection box through a pipeline, and the air tightness of the pipeline connection can be detected by adding water into the box.

[0020] By further starting the vacuum pump body, the airflow of the vacuum pump body enters the detection box, and the injected gas will drive the piston and the limit column to move to one side, thereby squeezing the pressure sensor. The number of contacts between the limit column and the pressure sensor can be displayed on the display. By repeatedly starting the vacuum pump body and recording the values, and finally comparing them with the values ​​on the display, it can be determined whether the flow of gas in the detected vacuum pump body is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the overall structure of an embodiment of the present invention is provided;

[0022] Figure 2 It is a structural schematic diagram of the detection box;

[0023] Figure 3 It is a structural schematic diagram of the pressure sensor;

[0024] Figure 4 It is a structural diagram of the regulating mechanism;

[0025] Figure 5 It is a schematic diagram of the structure of the box.

[0026] Figure numerals: 1, test table; 101, rectangular groove; 102, support leg; 2, test box; 201, right angle plate; 202, electric push rod; 3, piston; 4, first fixed block; 5, first compression spring; 6, first limit column; 7, sealing ring; 8, round hole; 9, first connecting block; 10, threaded sleeve; 11, box; 1101, valve; 12, stud; 13, turntable; 14, connecting plate; 15, connector; 1501 , connecting pipe; 16, supporting block; 17, vacuum pump body; 18, adjusting mechanism; 1801, limiting slider; 1802, friction block; 1803, extrusion plate; 1804, second limiting column; 1805, second compression spring; 19, detection device; 1901, second fixed block; 1902, engaging groove; 1903, slider; 20, pressure sensor; 2010, second connecting block; 21, display; 22, fixing seat. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0029] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Example

[0033] like Figure 1 As shown, a new energy vehicle electronic vacuum pump performance detection device proposed by the present invention comprises a detection platform 1, a detection box 2 is fixedly connected to the detection platform 1, a piston 3 is movably matched inside the detection box 2, one end of the piston 3 is fixedly connected to a first fixed block 4, one end of the first fixed block 4 is fixedly connected to a first limiting column 6, the first limiting column 6 and one end of the detection box 2 are movably penetrated, a sealing ring 7 is movably penetrated by the first limiting column 6, a first compression spring 5 is sleeved on the outer peripheral surface of the first limiting column 6, one end of the first compression spring 5 contacts the first fixed block 4, and the other end of the first compression spring 5 contacts the detection box 2, a rectangular groove 101 is opened on the detection platform 1, and a detection device 19 is arranged on the rectangular groove 101, a right-angle plate 201 is fixedly connected to the detection box 2, an electric push rod 202 is fixedly connected to the right-angle plate 201, one end of the electric push rod 202 is sleeved on the air outlet on the detection box 2, and one end of the electric push rod 202 is curved. The detection device 19 includes a slider 1903 slidably connected to the rectangular groove 101, the slider 1903 is fixedly connected to the detection device 19, the detection device 19 is fixedly connected to the second fixed block 1901, the second fixed block 1901 is provided with a snap-fit ​​groove 1902, the snap-fit ​​groove 1902 is sleeved with a second connecting block 2010, the second connecting block 2010 is fixedly connected to the pressure sensor 20, the pressure sensor 20 is connected to a display 21 through a line, the display 21 is rotatably connected to a fixed seat 22, the fixed seat 22 is fixedly connected to the detection platform 1, and by injecting gas into the detection box 2, the piston 3, the first fixed block 4 and the first limiting column 6 are driven to move to one side, thereby squeezing the first compression spring 5, so that one end of the first limiting column 6 contacts the pressure sensor 20, so that the pressure sensor 20 generates an electrical signal to the display 21, and the number of contacts between the first limiting column 6 and the pressure sensor 20 is displayed by the display 21.

[0034] like Figure 1 As shown, a support block 16 is fixedly installed on the testing platform 1, an arc groove is opened on the support block 16, a vacuum pump body 17 is placed on the arc groove, and the support block 16 is used to fix the vacuum pump body 17. Two sets of support legs 102 are fixedly installed on the testing platform 1.

[0035] like Figure 2 As shown, a circular hole 8 is opened on the detection box 2, a first connecting block 9 is fixedly connected to the detection box 2, a threaded sleeve 10 is fixedly connected to the first connecting block 9, a box body 11 is fixedly connected to the detection box 2, a valve 1101 is fixedly connected to the box body 11, and the box body 11 is installed at the same level as the circular hole 8. By injecting water into the box body 11, it can be used to detect the air tightness of the connection.

[0036] like Figure 1-2 As shown, the threaded sleeve 10 is threadedly connected with a stud 12, one end of the stud 12 is fixedly connected to a turntable 13, a connecting plate 14 movably penetrates the turntable 13, and a connecting head 15 is fixedly connected to the connecting plate 14. By rotating the turntable 13, the stud 12 can be driven to rotate, thereby driving the connecting plate 14 to move to one side, so that the connecting head is sleeved on the round hole 8 on the detection box 2.

[0037] like Figure 1 As shown, one end of the connector 15 is connected to a connecting tube 1501 , and one end of the connecting tube 1501 is sleeved on a connecting port on the vacuum pump body 17 . The connecting tube 1501 is used to connect the vacuum pump body 17 and the detection box 2 .

[0038] like Figure 4 As shown, the rectangular groove 101 is provided with an adjustment mechanism 18, and the adjustment mechanism 18 includes a group of limit sliders 1801 slidably connected to the rectangular groove 101, and the two limit sliders 1801 are fixedly connected with friction blocks 1802, and the two friction blocks 1802 are slidably connected to the detection platform 1, and the two limit sliders 1801 are fixedly connected with an extrusion plate 1803, and the two limit sliders 1801 are movably penetrated with a second limit column 1804, and the two ends of the second limit column 1804 are movably penetrated with the friction block 1802, and the second limit column 1804 and the two friction blocks 1802 are movably penetrated. The outer surface of the second limit column 1804 is sleeved with a second compression spring 1805, and both ends of the second compression spring 1805 are in contact with the limit slider 1801. First, by pressing the extrusion plate 1803, the extrusion plate 1803 is driven to move inward, thereby squeezing the second limit column 1804, thereby driving the friction block 1802 to separate from the detection platform 1, and then adjusting the position of the limit slider 1801, thereby changing the position of the slider 1903, thereby changing the position of the pressure sensor 20, so that the pressure sensor 20 can contact one end of the first limit column 6.

[0039] On the other hand, the present invention provides a method for detecting the performance of an electronic vacuum pump for a new energy vehicle, which is applied to the above electronic vacuum pump performance detection device. The method comprises the following steps:

[0040] Step 1: Place the vacuum pump body 17 to be tested on the support block 16, and then connect one end of the connecting tube 1501 to the connecting port on the vacuum pump body 17;

[0041] Step 2: By rotating the turntable 13, the stud 12 is driven to rotate, and the connecting plate 14 is driven to move to one side under the action of the threaded sleeve 10, so that the connecting plate 14 drives the connecting head 15 to be sleeved on the circular hole 8;

[0042] Step 3: Then, water is injected into the box body 11 to detect the air tightness of the connection between the connector 15 and the circular hole 8. After the detection is completed, the water inside the box body 11 is drained through the valve 1101;

[0043] Step 4: When the vacuum pump body 17 is powered on, the exhausted gas will be injected into the detection box 2, thereby squeezing the piston 3 to move to one side, thereby driving the first limit column 6 to move to one side, thereby squeezing the first compression spring 5, and then contracting the electric push rod 202, so that the gas in the detection box 2 can be discharged, so that under the action of the first compression spring 5, the piston 3 and the first limit column 6 are reset;

[0044] Step five, then adjust the limit slider 1801 to change the position of the friction block 1802 in contact with the rectangular groove 101, thereby adjusting the position of the slider 1903 in the rectangular groove 101, thereby changing the position of the pressure sensor 20. When one end of the first limit column 6 contacts the pressure sensor 20, the pressure sensor 20 will send an electrical signal to the display 21, and the display 21 will display the number of contacts between the first limit column 6 and the pressure sensor 20, so as to detect whether the change in vacuum degree within a certain period of time can reach a fixed value each time, so as to determine whether the performance of the vacuum pump is stable.

[0045] The working principle of this embodiment is as follows: when using the vacuum pump performance detection device, first place the vacuum pump body 17 on the support block 16, then connect the vacuum pump body 17 to the detection box 2 through the connecting pipe 1501, and then energize the vacuum pump body 17, so that airflow will enter the detection box 2. At this time, water is injected into the box body 11 to detect the air tightness of the connection. Then, when the airflow enters the detection box 2, it will squeeze the piston 3, the first fixed block 4 and the first limiting column 6 to move to one side, thereby squeezing the first compression spring 5. When one end of the first limiting column 6 hits the pressure sensor 20, The pressure sensor 20 will input an electrical signal to the display 21, and then the gas in the gas detection box 2 will be discharged by contracting the electric push rod 202. Under the action of the first compression spring 5, the piston 3, the first fixed block 4 and the first limit column 6 are reset, and then the vacuum pump body 17 is energized again to allow the gas to enter the detection box 2. At this time, it is observed whether the entered gas can push the piston 3, the first fixed block 4 and the first limit column 6 to move to a position where they can contact the pressure sensor 20. Such repeated tests are used to determine the stability of the gas flow in the vacuum pump body 17.

[0046] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A new energy vehicle electronic vacuum pump performance testing device, comprising a testing platform (1), characterized in that: The detection platform (1) is fixedly connected to a detection box (2), the detection box (2) is movably equipped with a piston (3), one end of the piston (3) is fixedly connected to a first fixed block (4), one end of the first fixed block (4) is fixedly connected to a first limiting column (6), the first limiting column (6) and one end of the detection box (2) are movably penetrated, a sealing ring (7) is movably penetrated through the first limiting column (6), the outer peripheral surface of the first limiting column (6) is sleeved with a first compression spring (5), one end of the first compression spring (5) is in contact with the first fixed block (4), and the other end of the first compression spring (5) is in contact with the detection box (2); The detection table (1) is provided with a rectangular groove (101), the rectangular groove (101) is provided with a detection device (19), the detection box (2) is fixedly connected with a right-angle plate (201), the right-angle plate (201) is fixedly connected with an electric push rod (202), one end of the electric push rod (202) is sleeved on the air outlet of the detection box (2), and one end of the electric push rod (202) is in the form of an arc surface; The detection device (19) comprises a slider (1903) slidably connected to the rectangular groove (101); the slider (1903) is fixedly connected to the detection device (19); the detection device (19) is fixedly connected to a second fixed block (1901); the second fixed block (1901) is provided with a snap-fitting groove (1902); the snap-fitting groove (1902) is sleeved with a second connecting block (2010); the second connecting block (2010) is fixedly connected to a pressure sensor (20); The pressure sensor (20) is connected to a display (21) via a line; the display (21) is rotatably connected to a fixing seat (22); and the fixing seat (22) is fixedly connected to the detection platform (1).

2. A new energy vehicle electronic vacuum pump performance detection device according to claim 1, characterized in that: A support block (16) is fixedly mounted on the detection platform (1), an arc-shaped groove is formed on the support block (16), a vacuum pump body (17) is placed on the arc-shaped groove, and two groups of support legs (102) are fixedly mounted on the detection platform (1).

3. A new energy vehicle electronic vacuum pump performance detection device according to claim 1, characterized in that: The detection box (2) is provided with a circular hole (8), the detection box (2) is fixedly connected to a first connection block (9), the first connection block (9) is fixedly connected to a threaded sleeve (10), the detection box (2) is fixedly connected to a box body (11), and the box body (11) is fixedly connected to a valve (1101).

4. A new energy vehicle electronic vacuum pump performance detection device according to claim 3, characterized in that: The threaded sleeve (10) is threadedly connected with a stud (12), and one end of the stud (12) is fixedly connected with a rotating disk (13).

5. A new energy vehicle electronic vacuum pump performance detection device according to claim 4, characterized in that: A connecting plate (14) movably penetrates the rotating disk (13), and a connecting head (15) is fixedly connected to the connecting plate (14).

6. A new energy vehicle electronic vacuum pump performance detection device according to claim 5, characterized in that: One end of the connector (15) is connected to a (connecting pipe 1501), and one end of the (connecting pipe 1501) is sleeved on a connecting port on the vacuum pump body (17).

7. A new energy vehicle electronic vacuum pump performance detection device according to claim 1, characterized in that: The rectangular groove (101) is provided with an adjustment mechanism (18), the adjustment mechanism (18) comprises a group of limit sliders (1801) slidably connected to the rectangular groove (101), two limit sliders (1801) are fixedly connected with friction blocks (1802), the two friction blocks (1802) are slidably connected to the detection platform (1), and the two limit sliders (1801) are fixedly connected with extrusion plates (1803).

8. A new energy vehicle electronic vacuum pump performance detection device according to claim 7, characterized in that: A second limiting column (1804) is movably penetrated on the two limiting sliders (1801), and both ends of the second limiting column (1804) are movably penetrated by the friction block (1802). The second limiting column (1804) and the two friction blocks (1802) are movably penetrated, and a second compression spring (1805) is sleeved on the outer surface of the second limiting column (1804), and both ends of the second compression spring (1805) are in contact with the limiting slider (1801).

9. A method for detecting the performance of an electronic vacuum pump for a new energy vehicle, applied to the detection device as claimed in any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step 1: Place the vacuum pump body (17) to be tested on the support block (16), and then connect one end of the connecting tube (1501) to the connecting port on the vacuum pump body (17); Step 2: By rotating the turntable (13), the stud (12) is driven to rotate, thereby driving the connecting plate (14) to move to one side under the action of the threaded sleeve (10), so that the connecting plate (14) drives the connecting head (15) to be sleeved on the circular hole (8); Step 3: Then, water is injected into the box (11) to detect the air tightness of the connection between the connector (15) and the circular hole (8). After the detection is completed, the water inside the box (11) is drained through the valve (1101); Step 4: When the vacuum pump body (17) is powered on, the exhausted gas will be injected into the detection box (2), which will squeeze the piston (3) to move to one side, drive the first limit column (6) to move to one side, squeeze the first compression spring (5), and then contract the electric push rod (202), so that the gas in the detection box (2) can be discharged, so that under the action of the first compression spring (5), the piston (3) and the first limit column (6) are reset; Step five, then by adjusting the limit slider (1801), the position of the friction block (1802) in contact with the rectangular groove (101) is changed, thereby adjusting the position of the slider (1903) in the rectangular groove (101), thereby changing the position of the pressure sensor (20). When one end of the first limit column (6) contacts the pressure sensor (20), the pressure sensor (20) will send an electrical signal to the display (21), and the display (21) will display the number of contacts between the first limit column (6) and the pressure sensor (20).

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