Direct current contactor stroke parameter detection system

Abstract

The utility model discloses a direct current contactor stroke parameter detection system, which relates to the technical field of direct current contactor detection, comprises a bottom plate, and is characterized by further comprising a positioning clamping mechanism arranged on the bottom plate, an intelligent detection mechanism and an automatic material changing mechanism arranged on the bottom plate and acting on the positioning clamping mechanism, the automatic material changing mechanism comprises a rotating table, a stand column, a transverse plate and an oval concave suction cup. According to the utility model, through the arrangement of the positioning and clamping mechanism, the intelligent detection mechanism and the automatic reloading mechanism acting on the positioning and clamping mechanism, automatic detection of stroke parameters of the DC contactor is realized, and the microswitch effectively eliminates the influence of overshoot and a reset spring of a displacement sensor on the stroke parameters; the data display meter performs zero clearing on the data, performs acquisition and operation on over-travel data when a main feeler lever of the contactor is opened and whole-travel data when the main feeler lever is completely opened, and displays the data on the panel; on the basis of ensuring the detection precision, the detection time and the equipment cost are obviously reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to direct current contactor detection technical field, concretely relates to a direct current contactor stroke parameter detection system. BACKGROUND

[0002] With the development of science and technology and the adjustment of enterprise industrial structure and the enhancement of product competitiveness, reliable quality, stable performance and high precision products are urgently needed in the industrial field. As a new emerging switching device, direct current contactor is widely used in electric vehicles, charging equipment, communication equipment and other aspects. Stroke parameter is an important index in contactor performance, and the accuracy of its parameter directly affects the stability, service life and performance of the product. Reliable and accurate detection is the inevitable requirement of contactor production, product quality control and technical analysis.

[0003] At present, the domestic direct current contactor stroke parameter detection method is mostly manual detection, which is slow, complicated and low in precision, and the detection result is greatly affected by manual operation. Similar large-scale automatic detection methods drive the main contact to open and close through a lead screw and a nut driven by a servo motor, and calculate the opening distance and overtravel data by the number of motor rotations. Although this device greatly improves the precision and speed compared with manual detection, the detection result of such equipment is greatly affected by the precision of the lead screw and other mechanical mechanisms. Especially in the long-term use process, the contact probe is easily affected by dust, corrosion, static electricity and other factors, which may cause inaccurate signal collection or overshoot phenomenon and result in large errors. Foreign products of this type mostly use laser technology for non-contact detection, and use high-precision laser range finders and ultra-high-speed signal collectors to extract data. Because there is no deceleration device, the product structure is complex and the cost is high, so it is less used in China. There is a need for a direct current contactor stroke parameter detection system to detect cylindrical direct current contactors. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a direct current contactor stroke parameter detection system, which aims at solving the problems of long detection time and high detection cost in the above background technology.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: a direct current contactor stroke parameter detection system, comprising a bottom plate, a positioning and clamping mechanism, an intelligent detection mechanism and an automatic material changing mechanism acting on the positioning and clamping mechanism, the automatic material changing mechanism comprising a rotating table, a stand, a horizontal plate and an oval concave suction cup, the rotating table being arranged on the bottom plate, the stand being fixed on the upper surface of the rotating table, the horizontal plate being arranged at the top end of the stand, and the oval concave suction cup being installed at the bottom of the free end of the horizontal plate through an electric telescopic rod.

[0006] Further, the positioning and clamping mechanism comprises guide rails fixedly installed on the bottom plate, a placing seat in sliding cooperation with the guide rails and a telescopic cylinder arranged on the bottom plate, an output end of the telescopic cylinder is connected with one end of the placing seat, and a semicircular positioning groove is formed in the telescopic direction of the telescopic cylinder at the top end of the placing seat.

[0007] Further, the intelligent detection mechanism comprises a shell arranged on the bottom plate and a detection assembly arranged in the shell, the detection assembly comprises an electric push rod, a linear displacement sensor and a sliding block fixedly connected with an output end of the electric push rod, the sliding block is in sliding cooperation with the upper surface of the bottom plate, the electric push rod and the linear displacement sensor are arranged on the bottom plate, a micro switch is arranged on the sliding block, the sliding block is in abutment with a fixed end of the linear displacement sensor, and a digital display meter is arranged on the shell.

[0008] Further, the digital display meter is electrically connected with the linear displacement sensor and the micro switch respectively.

[0009] The utility model has the advantages of the following beneficial effects:

[0010] The utility model discloses a DC contactor stroke parameter detection system, through setting up positioning and clamping mechanism, intelligent detection mechanism and automatic material changing mechanism acting on positioning and clamping mechanism, realize the automation detection of DC contactor stroke parameter, and the influence of microswitch effectively eliminates overshoot and displacement sensor reset spring to stroke parameter, and the digital display meter carries out the collection and operation to the overtravel data of contactor main contact lever opening instantaneous and the full range data of complete opening, and displays on the panel, this combination, on the basis of guaranteeing the detection precision, makes detection time and equipment cost significantly reduce. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is the appearance structure schematic diagram of the utility model;

[0012] Fig. 2 It is the overall overhead structure schematic diagram of the utility model;

[0013] Fig. 3 It is the structure schematic diagram of automatic material changing mechanism in the utility model;

[0014] Fig. 4 It is the structure schematic diagram of placing seat in the utility model;

[0015] In the drawing: 1, bottom plate;2, rotary table;3, stand;4, cross plate;5, oval concave suction cup;6, electric telescopic rod;7, guide rail;8, placing seat;9, telescopic cylinder;10, shell;11, electric push rod;12, linear displacement sensor;13, sliding block;14, micro switch;15, digital display meter. DETAILED DESCRIPTION

[0016] As Figs. 1 to 4 shown, a DC contactor stroke parameter detection system, including the base plate 1, also includes a positioning and clamping mechanism, intelligent detection mechanism and set on the base plate 1 and acting on the positioning and clamping mechanism automatic reloading mechanism, automatic reloading mechanism includes rotating table 2, column 3, cross plate 4 and oval concave suction cup 5, rotating table 2 is provided on the base plate 1, column 3 is fixed on the upper surface of rotating table 2, cross plate 4 is provided on the top of column 3, oval concave suction cup 5 is installed on the free end of cross plate 4 through the electric telescopic rod 6. Because the DC contactor to be detected is a cylindrical structure, the oval concave suction cup 5 is designed as a groove-shaped sealing lip structure, which effectively increases the friction between the suction cup and the surface of the DC contactor; the oval concave suction cup 5 is connected with a vacuum generator to smoothly complete the transfer.

[0017] The working principle of the DC contactor is based on electromagnetic principle. When the control circuit is powered on, the coil generates a magnetic field, attracting the armature to act, making the main contact closed, thereby connecting the main circuit. When the control circuit is powered off, the magnetic field disappears, and the armature resets under the action of the spring, and the main contact is disconnected, thereby disconnecting the main circuit.

[0018] The positioning and clamping mechanism includes a guide rail 7 fixedly installed on the base plate 1, a placement seat 8 in sliding cooperation with the guide rail 7, and a telescopic cylinder 9 provided on the base plate. The output end of the telescopic cylinder 9 is connected with one end of the placement seat 8, and a semicircular positioning groove is opened at the top end of the placement seat 8 along the telescopic direction of the telescopic cylinder 9; the DC contactor is placed on the clamping mechanism, and the positioning groove quickly clamps and positions the DC contactor.

[0019] The intelligent detection mechanism includes a housing 10 provided on the base plate 1 and a detection assembly located inside the housing 10. The detection assembly includes an electric push rod 11, a linear displacement sensor 12, and a sliding block 13 fixedly connected with the output end of the electric push rod 11. The sliding block 13 is in sliding cooperation with the upper surface of the base plate 1. The electric push rod 11 and the linear displacement sensor 12 are both provided on the base plate 1. A microswitch 14 is provided on the sliding block 13. The sliding block 13 abuts against the fixed end of the linear displacement sensor 12. A programmable intelligent imported digital display meter 15 with a sampling frequency of more than 1500 times is provided on the housing 10. The digital display meter 15 can convert the input signal into the output signal and display it. After collecting the data of each position point in the detection movement, it is operated and displayed, and the output action is controlled through programming. The function of the linear displacement sensor 12 is to convert the linear mechanical displacement into an electrical signal. The microswitch 14 makes the displacement sensor 12 probe and the moving contact reliably contact and then outputs the switch signal, so that any movement of the contact is truly recorded, effectively eliminating the influence of the displacement sensor 12 reset spring on the stroke parameter.

[0020] The digital display meter 15 is electrically connected with the linear displacement sensor 12 and the microswitch 14 respectively.

[0021] The PLC controller is electrically connected with the rotating table 2, the oval concave suction cup 5, the electric telescopic rod 6, the telescopic cylinder 9 and the electric push rod 11 respectively.

[0022] The specific operation process of the utility model is as follows:

[0023] During detection, the oval concave suction cup 5 is driven downward by the electric telescopic rod 6, so that the sealing lip on the lower surface of the oval concave suction cup 5 is attached to the surface of the DC contactor; at this time, the vacuum generator drives to generate a vacuum suction force, which is conducted to the oval concave suction cup 5 through a conduit, and the DC contactor to be detected is adsorbed; after adsorption, the electric telescopic rod 6 is retracted, the DC contactor is driven by the rotating table 2 to move horizontally by 90 degrees, the electric telescopic rod 6 is extended, the blank is transferred to the upper side of the semicircular positioning groove of the placement seat 8, the vacuum generator is stopped, and the DC contactor falls to the placement seat 8.

[0024] The telescopic cylinder 9 is started to push the placement seat 8 to move to the other end of the guide rail, so that the DC contactor is electrified, the contactor is controlled to be attracted, the electric push rod 11 is extended, the probe of the linear displacement sensor 12 is in reliable contact with the moving contact plate of the DC contactor, the micro switch 14 is triggered to close the output zero reset signal, the instrument data is zero reset, the electric box zero reset indicator is bright, and the data zero reset is completed; then the contactor power is disconnected, the electric push rod 11 is controlled to retract, the contactor moving rod is gradually opened, the signal is extracted when the main loop contact is disconnected and is locked, and the "overtravel" data is displayed on the screen; the electric push rod 11 is continuously controlled to retract, and after the contactor is fully opened, the moving rod no longer moves, the micro switch 14 is disconnected to output a signal, at this time, the data is full range data, and the "full range" data is displayed on the screen; the opening distance can be calculated by subtracting the overtravel from the full range.

[0025] After the data detection is completed, the controller controls the telescopic cylinder 9 to retract, drives the placement seat 8 to reset, the electric telescopic rod 6 is extended, the vacuum generator is started, the oval concave suction cup 5 takes out the detected DC contactor and puts it into the collection groove arranged on the bottom plate 1, rotates to the upper side of the material taking groove and takes out a new contactor to be detected, rotates by 90 degrees and is placed on the placement seat 8, the telescopic cylinder 9 drives the placement seat 8 to move to the other end of the guide rail, and the above process is repeatedly continued.

Claims

1. A DC contactor travel parameter detection system comprising a backplane (1), characterized in that: Also include the positioning clamping mechanism, intelligent detection mechanism and automatic material changing mechanism set on the bottom plate (1), the automatic material changing mechanism includes rotating table (2), stand (3), cross plate (4) and oval concave suction cup (5), the rotating table (2) is set on the bottom plate (1), the stand (3) is fixed on the upper surface of rotating table (2), the cross plate (4) is set on the top end of stand (3), the oval concave suction cup (5) is installed at the bottom of the free end of cross plate (4) by electric telescopic rod (6).

2. The DC contactor travel parameter detection system of claim 1, wherein, The positioning clamping mechanism includes guide rail (7) fixedly installed on the bottom plate (1), placement seat (8) in sliding fit with guide rail (7) and telescopic cylinder (9) set on the bottom plate, the output end of telescopic cylinder (9) is connected with one end of placement seat (8), the top end of placement seat (8) is provided with semicircular positioning groove along the telescopic direction of telescopic cylinder (9).

3. The DC contactor travel parameter detection system of claim 1, wherein, The intelligent detection mechanism includes housing (10) set on the bottom plate (1) and detection assembly located in the housing (10), the detection assembly includes electric push rod (11), linear displacement sensor (12) and slider (13) fixedly connected with the output end of electric push rod (11), the slider (13) is in sliding fit with the upper surface of bottom plate (1), the electric push rod (11) and linear displacement sensor (12) are both set on the bottom plate (1), the slider (13) is provided with microswitch (14), the slider (13) is in abutment with the fixed end of linear displacement sensor (12), the housing (10) is provided with digital display meter (15).

4. The DC contactor travel parameter detection system of claim 3, wherein, The digital display meter (15) is electrically connected with linear displacement sensor (12) and microswitch (14) respectively.

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