A multi-functional engine cover inspection tool

Abstract

The present invention belongs to the field of engine hood detection, and provides a multifunctional engine hood inspection tool, including a workbench, a support frame is fixedly connected to the workbench, and positioning mechanisms capable of horizontally positioning the engine hood are arranged on both sides of the support frame, a sliding seat is slidably connected to the inner top surface of the support frame, and a driving component for driving the sliding seat to move horizontally is arranged on the support frame, and the sliding seat is fixedly connected to a lifting rod that can be lifted vertically, and the telescopic end of the lifting rod is fixedly connected to a fixed plate, and the end of the fixed plate is fixedly connected to a dust removal mechanism, and the dust removal mechanism is connected to a sensing component. In the present invention, when the pressure value of the pressure sensor exceeds the preset pressure threshold in the processing module, the control module controls the driving rod to contract, reduces the abutment force between the No. 4 spring and the box body, and avoids deformation of the contact pin and the raised part of the engine hood.

Description

Technical Field

[0001] The invention belongs to the field of engine hood detection, and in particular relates to a multifunctional engine hood detection tool. Background Art

[0002] The engine hood is a cover on the protective cover used to protect the engine from the outside. The engine hood needs to be inspected from the outside during the production process. The surface roughness of the engine hood directly reflects the uniformity of the surface coating of the engine hood.

[0003] The stylus method is a method for measuring the surface roughness of the workpiece during mechanical processing. During measurement, the stylus is brought into contact with the measured surface. When the stylus is driven by the driver to move along the contour of the measured surface, due to the uneven surface contour, the stylus makes a vertical ups and downs motion in a direction perpendicular to the contour of the measured surface. This motion is converted into an electrical signal by the sensor. After amplification and processing, the surface contour assessment parameter value can be displayed on the display, and the surface contour graph can also be output through a recording instrument.

[0004] When the existing engine hood cover inspection tool detects the roughness of the hood cover, if the contact pin is too loose with the surface of the engine hood cover, the inspection result will be inaccurate; but if the contact pin is too tight with the surface of the engine hood cover, when the height of the hood cover protrusion is too high, the contact pin is easy to be deformed by the contact pin with the protrusion of the engine hood cover; on the other hand, when the surface roughness of the engine hood cover is large, the contact pin is easy to be stuck in the groove on the surface of the engine hood cover, which can easily cause the contact pin to break. Summary of the invention

[0005] The object of the present invention is to provide a multifunctional engine hood inspection tool, aiming to solve the technical problem in the prior art that when the stylus abuts too tightly against the surface of the engine hood, the stylus is easily deformed by the protruding part of the engine hood.

[0006] The present invention is implemented in this way: a multifunctional engine hood inspection tool comprises a workbench, a support frame is fixedly connected to the workbench, positioning mechanisms capable of horizontally positioning the engine hood are arranged on both sides of the support frame, a sliding seat is slidably connected to the inner top surface of the support frame, a driving assembly for driving the sliding seat to move horizontally is arranged on the support frame, a lifting rod capable of vertical lifting is fixedly connected to the sliding seat, a fixing plate is fixedly connected to the telescopic end of the lifting rod, a dust removal mechanism is fixedly connected to the end of the fixing plate, the dust removal mechanism is used to clean the surface of the engine hood, the dust removal mechanism is connected to a sensing assembly, and the sensing assembly can sense the protrusion of the engine hood;

[0007] The fixed plate is also fixedly provided with a retractable electric rod, the retractable end of the electric rod is fixedly connected with an outer cover, a plurality of boxes are vertically slidably connected inside the outer cover, an elastic component is provided on the outer top surface of the outer cover for each box, the elastic component is used to elastically limit the box vertically, the inner end surface of the box horizontally slides and is sealed with a connecting seat, a strip groove is provided on the bottom surface of the box, the connecting seat is sealed with the strip groove, a plurality of contact pins are fixedly connected side by side at the bottom of the connecting seat, the contact pins can be elastically retracted, and all the contact pins pass through the strip groove; a buffer component for buffering and positioning the connecting seat is provided in the box, and an adjustment component capable of resetting the contact pin upward is provided on the outside of the box;

[0008] Guide mechanisms are provided on both sides of the dust removal mechanism, and under the positioning effect of the guide mechanisms, the engine cover can be relatively parallel to the bottom surfaces of all the boxes;

[0009] The control system can prevent the contact pin from getting stuck with the engine hood cover by controlling the buffer component, the guide mechanism and the elastic component when the contact pin performs roughness detection on the engine hood cover.

[0010] Further technical solution: The buffer assembly includes a No. 1 spring and a one-way solenoid valve, the box is filled with coolant, the No. 1 spring is connected between the connecting seat and the inner end surface of the box, and two one-way solenoid valves with opposite guiding directions are arranged on the connecting seat.

[0011] Further technical solution: the elastic component includes a driving rod, a baffle, a No. 4 spring and a housing;

[0012] The outer top surface of the outer cover is fixedly connected with a plurality of outer shells, and the outer shells are all fixedly connected directly above the box body, and the inside of the outer shells passes through the inside of the outer cover, and the outer shells are fixedly connected with a driving rod, and the telescopic end of the driving rod is fixedly connected with a baffle, and a No. 4 spring is elastically abutted between the baffle and the box body.

[0013] Further technical solution: the adjustment component includes a round table and an adjustment seat, the adjustment seat is fixedly connected to the outer bottom surface of the box, each contact pin is fixedly connected to the round table, and the surface of the round table opposite to the adjustment seat is an inclined surface.

[0014] Further technical solution: the dust removal mechanism includes a dust collecting hood, a brush, a filter box and an air pump;

[0015] The dust collecting hood is fixedly connected to the fixing plate, a row of brushes is arranged at the bottom of the dust collecting hood, the fixing plate is fixedly connected to a filter box, the filter box is connected to an air pump, and the filter box is communicated with the interior of the dust collecting hood.

[0016] Further technical solution: the induction assembly includes a slide slot, a third spring and a roller;

[0017] A plurality of slide grooves are arranged in the dust collecting hood, the slide grooves are vertically slidably connected to the side walls of the dust collecting hood, a No. 3 spring is connected between the slide grooves and the inner end surface of the dust collecting hood, and a roller is rotatably connected in the slide grooves.

[0018] Further technical solution: the positioning mechanism includes a jacket, a clamp, a second spring, a bolt and a limit plate;

[0019] The outer sleeve is fixedly connected to the upper end surface of the workbench, and a clamp is arranged on the inner side of the outer sleeve. A limiting plate is fixedly connected to the side of the clamp. Under the limiting action of the limiting plate, the clamp can slide vertically parallel to the outer sleeve. A plurality of No. 2 springs are vertically connected between the clamp and the outer sleeve, and a bolt is threadedly connected to the clamp.

[0020] Further technical solution: the guide mechanism includes a guide frame, a guide roller and an electromagnet;

[0021] Both sides of the dust collecting cover are fixedly connected with guide frames, a row of guide rollers are rotatably connected to the guide frames, and a plurality of electromagnets are fixedly connected to the bottom surface of the guide frames.

[0022] Further technical solution: the driving assembly includes a motor and a threaded shaft, the buffer assembly is fixedly connected to the motor, the output shaft of the motor is fixedly connected to the threaded shaft, and the threaded shaft is threadedly connected to the sliding seat.

[0023] Further technical solution: The control system comprises:

[0024] A monitoring module, which includes a plurality of pressure sensors and a valve limit switch, wherein a pressure sensor is provided between the third spring and the dust collecting cover, and a valve limit switch is provided on the one-way solenoid valve;

[0025] A processing module, which is used to compare the pressure value of the pressure sensor with the preset pressure threshold in the processing module, and form judgment information, and trigger a signal according to the judgment information; in addition, when the one-way solenoid valve is turned on, the valve limit switch can trigger a corresponding signal;

[0026] The control module is used to receive the signal in the processing module and control the buffer component, the guide mechanism and the elastic component.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. Under the limiting action of all guide rollers, the engine hood and the guide frame are relatively parallel, so that all stylus pins can move parallel to the surface of the engine hood, improving the accuracy of stylus detection; in this process, the guide rollers roll along the surface of the engine hood, and all guide rollers limit the engine hood while reducing friction with the surface of the engine hood, thus avoiding damage to the surface of the engine hood;

[0029] 2. When the pressure value of the pressure sensor exceeds the preset pressure threshold in the processing module, the control module controls the driving rod to contract, reducing the contact force between the fourth spring and the box body, thereby reducing the squeezing force between the stylus and the raised part of the engine cover, and avoiding the deformation of the stylus and the raised part of the engine cover;

[0030] 3. When the surface roughness of the engine hood is large and the stylus is stuck in the groove on the surface of the engine hood, as the driving assembly drives the box to move, the connecting seat connected to the stylus is forced to slide in the box, and the corresponding one-way solenoid valve is turned on under the action of the hydraulic pressure. The connecting seat pushes the coolant in one chamber of the box to flow to another chamber. At this time, the No. 1 spring is forced to contract, and the elastic limit of the No. 1 spring and the buffering effect of the water flow can prevent the stylus from getting stuck and breaking;

[0031] 4. With the relative movement of the stylus and the housing, the adjustment assembly can push the stylus stuck in the engine hood to move upward. When the stylus moves up to a suitable height, all the stylus can continue to move with the corresponding housing. At this time, spring No. 1 is reset. Under the buffering effect of the water flow, it can avoid that spring No. 1 pushes the connecting seat and the stylus connected to the connecting seat to cause reciprocating horizontal vibration, thereby affecting the accuracy of stylus detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 It is a structural schematic diagram of the dust removal mechanism in the present invention.

[0034] Figure 3 It is a structural schematic diagram of the guide mechanism in the present invention.

[0035] Figure 4 It is a schematic diagram of the structure of the sensing component in the present invention.

[0036] Figure 5 It is a structural schematic diagram of the positioning mechanism in the present invention.

[0037] Figure 6 It is a schematic diagram of the connection between the outer cover and the box body in the present invention.

[0038] Figure 7 for Figure 6A magnified schematic diagram of area A in the middle.

[0039] Figure 8 It is a schematic cross-sectional view of the internal structure of the box body in the present invention.

[0040] In the attached drawings: 1. workbench; 2. buffer assembly; 21. spring No. 1; 22. one-way solenoid valve; 3. drive assembly; 31. motor; 32. threaded shaft; 4. positioning mechanism; 41. jacket; 42. fixture; 43. spring No. 2; 44. bolt; 45. limit plate; 5. dust removal mechanism; 51. dust hood; 52. brush; 53. filter box; 54. air pump; 6. guide mechanism; 61. guide frame; 62. guide roller; 63. Electromagnet; 7. Induction component; 71. Slide; 72. Spring No. 3; 73. Roller; 8. Elastic component; 81. Drive rod; 82. Baffle; 83. Spring No. 4; 84. Housing; 9. Adjustment component; 91. Round table; 92. Adjustment seat; 10. Sliding seat; 11. Lifting rod; 12. Fixed plate; 13. Outer cover; 14. Box; 15. Connecting seat; 16. Contact pin; 17. Strip groove; 18. Support frame; 19. Electric rod. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0042] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0043] like Figure 1-Figure 8 As shown, a multifunctional engine hood inspection tool provided by the present invention comprises a workbench 1, a support frame 18 is fixedly connected to the workbench 1, both sides of the support frame 18 are provided with positioning mechanisms 4 capable of horizontally positioning the engine hood, a sliding seat 10 is slidably connected to the inner top surface of the support frame 18, a driving assembly 3 for driving the sliding seat 10 to move horizontally is provided on the support frame 18, the sliding seat 10 is fixedly connected with a lifting rod 11 capable of vertical lifting, the telescopic end of the lifting rod 11 is fixedly connected with a fixing plate 12, the end of the fixing plate 12 is fixedly connected with a dust removal mechanism 5, the dust removal mechanism 5 is used to clean the surface of the engine hood, the dust removal mechanism 5 is connected with a sensing assembly 7, and the sensing assembly 7 can sense the protrusion of the engine hood;

[0044] The fixed plate 12 is also fixedly provided with a retractable electric rod 19, the retractable end of the electric rod 19 is fixedly connected with an outer cover 13, a plurality of boxes 14 are vertically slidably connected inside the outer cover 13, an elastic component 8 is provided on the outer top surface of the outer cover 13 for each box 14, the elastic component 8 is used to elastically limit the box 14 vertically, the inner end surface of the box 14 is horizontally slidably connected with a connecting seat 15, the bottom surface of the box 14 is provided with a strip groove 17, the connecting seat 15 is sealedly connected to the strip groove 17, a plurality of contact pins 16 are fixedly connected side by side at the bottom of the connecting seat 15, the contact pins 16 can be elastically retracted, and all the contact pins 16 pass through the strip groove 17; a buffer component 2 for buffering and positioning the connecting seat 15 is provided in the box 14, and an adjustment component 9 capable of resetting the contact pins 16 upward is provided on the outside of the box 14;

[0045] Guide mechanisms 6 are provided on both sides of the dust removal mechanism 5. Under the positioning effect of the guide mechanisms 6, the engine cover can be relatively parallel to the bottom surfaces of all the boxes 14.

[0046] The control system can prevent the contact pin 16 from getting stuck with the engine hood cover by controlling the buffer component 2, the guide mechanism 6 and the elastic component 8 when the contact pin 16 detects the roughness of the engine hood cover.

[0047] In this embodiment, two positioning mechanisms 4 together fix the engine cover horizontally, start the lifting rod 11 to drive the fixing plate 12 to descend until all the stylus pins 16 are in contact with the surface of the engine cover, and the fixing plate 12 drives the guide mechanism 6 to move downward until the guide mechanism 6 contacts the positioning mechanism 4. Under the positioning action of the guide mechanism 6, the engine cover can be relatively parallel to the bottom surface of all the boxes 14, thereby improving the accuracy of the stylus pins 16 during detection;

[0048] The electric rod 19 is started to extend and retract, thereby adjusting the appropriate pressure between all the stylus pins 16 and the engine cover, and the driving assembly 3 is started to drive the sliding seat 10 to move horizontally, and the sliding seat 10 drives all the stylus pins 16 to move horizontally, so as to detect the surface roughness of the engine cover. In this process, the dust removal mechanism 5 is used to clean the surface of the engine cover to further increase the accuracy of the detection;

[0049] The dust removal mechanism 5 is connected to a sensing component 7, which can sense the protrusion of the engine hood cover. When the height of the protrusion of the engine hood cover exceeds the limit, the control system controls the elastic component 8 to adjust, so as to prevent the stylus 16 from being bent due to force; when the surface roughness of the engine hood cover is relatively large, the buffer component 2 can buffer the stylus 16 to prevent the stylus 16 from being broken due to force, and the adjustment component 9 can reset the stuck stylus 16 upward.

[0050] like Figure 8 As shown, a multifunctional engine hood inspection fixture provided by the present invention is provided, wherein the buffer assembly 2 includes a No. 1 spring 21 and a one-way solenoid valve 22, the box body 14 is filled with coolant, the No. 1 spring 21 is connected between the connecting seat 15 and the inner end surface of the box body 14, and the connecting seat 15 is provided with two one-way solenoid valves 22 with opposite guiding directions.

[0051] When the stylus 16 is stuck on the engine hood, the stylus 16 is easily broken by force as the drive assembly 3 is driven. In this embodiment, the connecting seat 15 divides the box body 14 into two chambers, and the two one-way solenoid valves 22 on the connecting seat 15 respectively make the two chambers mutually unidirectionally connected; when the stylus 16 is stuck, the connecting seat 15 connected to the stylus 16 is forced to slide in the box body 14, and the connecting seat 15 pushes the coolant in one chamber to flow to the other chamber. At this time, the No. 1 spring 21 is forced to shrink, and the stylus 16 can be prevented from being stuck and broken by the elastic limit of the No. 1 spring 21 and the buffering effect of the water flow;

[0052] As the stylus 16 and the housing 14 move relative to each other, the adjustment assembly 9 can push the stylus 16 inserted into the engine hood to move upward. When the stylus 16 moves up to a suitable height, all the stylus 16 can continue to move with the corresponding housing 14. At this time, the No. 1 spring 21 is reset. Under the buffering effect of the water flow, the No. 1 spring 21 can be prevented from pushing the connecting seat 15 and the stylus 16 connected to the connecting seat 15 to reciprocate horizontal vibration when reset, thereby affecting the accuracy of the stylus 16 detection.

[0053] like Figure 7 As shown, a multifunctional engine hood inspection tool provided by the present invention is provided, wherein the elastic component 8 includes a driving rod 81, a baffle 82, a No. 4 spring 83 and a housing 84;

[0054] The outer top surface of the outer cover 13 is fixedly connected with a plurality of outer shells 84, and the outer shells 84 are all fixedly connected directly above the box body 14, and the interior of the outer shell 84 passes through the interior of the outer cover 13, and the outer shell 84 is fixedly connected with a driving rod 81, and the telescopic end of the driving rod 81 is fixedly connected with a baffle 82, and a No. 4 spring 83 is elastically abutted between the baffle 82 and the box body 14.

[0055] In this embodiment, the No. 4 spring 83 can elastically limit the box body 14 and adjust the extension and retraction of the driving rod 81 at the same time. The driving rod 81 can push the No. 4 spring 83 to extend and retract through the baffle 82, thereby adjusting the limiting force on the box body 14.

[0056] like Figure 8As shown, a multifunctional engine hood inspection fixture provided by the present invention is provided, wherein the adjustment assembly 9 includes a round table 91 and an adjustment seat 92, wherein the adjustment seat 92 is fixedly connected to the outer bottom surface of the box body 14, and each contact pin 16 is fixedly connected to the round table 91, and the surface opposite to the round table 91 and the adjustment seat 92 is an inclined surface.

[0057] In this embodiment, when the contact pin 16 moves horizontally relative to the box body 14, the truncated table 91 on the contact pin 16 stuck deeper in the engine hood first contacts the adjustment seat 92. Pushed by the adjustment seat 92, the contact pins 16 stuck in the engine hood shrink upward in sequence according to the degree of sticking until all the contact pins 16 can continue to move horizontally with the box body 14.

[0058] like Figure 2 As shown, a multifunctional engine cover inspection tool provided by the present invention is provided, wherein the dust removal mechanism 5 comprises a dust collecting cover 51, a brush 52, a filter box 53 and an air pump 54;

[0059] The dust hood 51 is fixedly connected to the fixing plate 12 , a row of brushes 52 is provided at the bottom of the dust hood 51 , a filter box 53 is fixedly connected to the fixing plate 12 , the filter box 53 is connected to an air pump 54 , and the filter box 53 is communicated with the interior of the dust hood 51 .

[0060] In this embodiment, when the driving component 3 drives the dust hood 51 to move forward, the dust hood 51 drives the brush 52 to clean the surface of the engine hood. At this time, the air pump 54 is started at the same time, and the air pump 54 vacuums the surface of the engine hood, and then the dust is adsorbed into the filter box 53.

[0061] like Figure 4 As shown, a multifunctional engine hood inspection tool provided by the present invention is provided, wherein the sensing component 7 comprises a slide slot 71, a third spring 72 and a roller 73;

[0062] The dust hood 51 is provided with a plurality of slide grooves 71 , which are vertically slidably connected to the side wall of the dust hood 51 , a No. 3 spring 72 is connected between the slide groove 71 and the inner end surface of the dust hood 51 , and a roller 73 is rotatably connected to the slide groove 71 .

[0063] In this embodiment, when the dust hood 51 moves, under the push of the No. 3 spring 72, the roller 73 in the dust hood 51 elastically abuts against the engine hood cover, and the degree of protrusion of the engine hood cover surface can be determined by the squeezing force between the roller 73 and the engine hood cover.

[0064] like Figure 5 As shown, a multifunctional engine hood inspection tool provided by the present invention is provided, wherein the positioning mechanism 4 includes a jacket 41, a clamp 42, a second spring 43, a bolt 44 and a limit plate 45;

[0065] The outer sleeve 41 is fixedly connected to the upper end surface of the workbench 1, and a clamp 42 is arranged on the inner side of the outer sleeve 41. The side of the clamp 42 is fixedly connected to a limiting plate 45. Under the limiting action of the limiting plate 45, the clamp 42 can slide vertically parallel to the outer sleeve 41. A plurality of No. 2 springs 43 are vertically connected between the clamp 42 and the outer sleeve 41, and a bolt 44 is threadedly connected to the clamp 42.

[0066] In this embodiment, the two ends of the engine hood cover are clamped in the corresponding clamps 42, and then the bolts 44 are tightened to fix the engine hood cover and the clamps 42. At this time, all the No. 2 springs 43 together perform vertical elastic limiting on the engine hood cover.

[0067] like Figure 3 As shown, a multifunctional engine hood inspection tool provided by the present invention is provided, wherein the guide mechanism 6 comprises a guide frame 61, a guide roller 62 and an electromagnet 63;

[0068] Guide frames 61 are fixedly connected to both sides of the dust collecting cover 51 . A row of guide rollers 62 are rotatably connected to the guide frames 61 . A plurality of electromagnets 63 are fixedly connected to the bottom surface of the guide frames 61 .

[0069] In this embodiment, when the dust hood 51 drives the guide frame 61 to approach the clamp 42, the electromagnet 63 is conductive at this time. Under the adsorption force of the electromagnet 63, the clamp 42 contacts all the guide rollers 62. Under the limiting action of all the guide rollers 62, the engine hood cover and the guide frame 61 are relatively parallel, so that all the contact pins 16 can move parallel to the surface of the engine hood cover. During this process, the guide rollers 62 roll along the surface of the engine hood cover. While all the guide rollers 62 limit the engine hood cover, they can reduce friction with the surface of the engine hood cover and avoid damage to the surface of the engine hood cover.

[0070] like Figure 1 As shown, a multifunctional engine hood inspection fixture provided by the present invention is provided, wherein the driving assembly 3 includes a motor 31 and a threaded shaft 32, the buffer assembly 2 is fixedly connected to the motor 31, the output shaft of the motor 31 is fixedly connected to the threaded shaft 32, and the threaded shaft 32 is threadedly connected to the sliding seat 10.

[0071] In this embodiment, the motor 31 is driven, the motor 31 drives the threaded shaft 32 to rotate, and the threaded shaft 32 drives the sliding seat 10 to move horizontally through thread transmission.

[0072] The control system comprises:

[0073] A monitoring module, which includes a plurality of pressure sensors and a valve limit switch. A pressure sensor is provided between the No. 3 spring 72 and the dust collecting cover 51, and a valve limit switch is provided on the one-way solenoid valve 22 (the valve limit switch mainly works through a combination of a mechanical device and an electronic sensor, and is used to control and monitor the position of the valve to ensure that the valve can trigger a corresponding signal when it is in a preset position);

[0074] A processing module, which is used to compare the pressure value of the pressure sensor with the preset pressure threshold in the processing module, and form judgment information, and trigger a signal according to the judgment information; in addition, when the one-way solenoid valve 22 is turned on, the valve limit switch can trigger a corresponding signal; the processing module is preferably a computer processor;

[0075] The control module is used to receive the signal in the processing module and control the buffer component 2, the guide mechanism 6 and the elastic component 8. The control module is preferably a PLC controller.

[0076] Working principle:

[0077] The two clamps 42 jointly fix the engine hood cover horizontally, and the lifting rod 11 is started to drive the fixing plate 12 to descend until all the contact pins 16 are in contact with the surface of the engine hood cover. The fixing plate 12 drives the guide mechanism 6 to move downward until all the guide rollers 62 are in contact with the clamp 42. Under the limiting action of all the guide rollers 62, the engine hood cover and the guide frame 61 are relatively parallel, so that all the contact pins 16 can move parallel to the surface of the engine hood cover, thereby improving the accuracy of the contact pins 16 during detection. During this process, the guide rollers 62 roll along the surface of the engine hood cover. While all the guide rollers 62 limit the engine hood cover, they can reduce friction with the surface of the engine hood cover and avoid damage to the surface of the engine hood cover.

[0078] The electric rod 19 is started to extend and retract, thereby adjusting the appropriate pressure between all the stylus pins 16 and the engine cover, and the driving assembly 3 is started to drive the sliding seat 10 to move horizontally, and the sliding seat 10 drives all the stylus pins 16 to move horizontally, so as to detect the surface roughness of the engine cover. In this process, the dust removal mechanism 5 is used to clean the surface of the engine cover, further increasing the accuracy of the roughness detection;

[0079] When the dust hood 51 moves, under the push of spring No. 3 72, the roller 73 in the dust hood 51 elastically abuts against the engine hood cover, and the degree of protrusion of the engine hood cover surface can be determined by the extrusion force between the roller 73 and the engine hood cover. When the height of the protrusion of the engine hood cover exceeds the limit, the control system controls the elastic component 8 to adjust, so as to prevent the contact pin 16 from bending under force; when the surface roughness of the engine hood cover is relatively large, the buffer component 2 can buffer the contact pin 16 to prevent the contact pin 16 from breaking under force, and the adjustment component 9 can reset the stuck contact pin 16 upward.

[0080] Specifically, when the pressure value of the pressure sensor exceeds the preset pressure threshold in the processing module, the control module controls the driving rod 81 to contract, reducing the contact force between the fourth spring 83 and the box body 14, thereby reducing the squeezing force between the stylus 16 and the raised part of the engine cover, and avoiding the stylus 16 from contacting and deforming the raised part of the engine cover;

[0081] When the surface roughness of the engine hood is relatively large and the stylus 16 is stuck in the groove on the surface of the engine hood, as the driving assembly 3 drives the box 14 to move, the connecting seat 15 connected to the stylus 16 is forced to slide in the box 14, and the corresponding one-way solenoid valve 22 is turned on under the action of the hydraulic pressure, and the connecting seat 15 pushes the coolant in one chamber of the box 14 to flow to another chamber. At this time, the No. 1 spring 21 is forced to contract, and the elastic limit of the No. 1 spring 21 and the buffering effect of the water flow can prevent the stylus 16 from getting stuck and breaking;

[0082] As the stylus 16 and the box 14 move relative to each other, the adjustment assembly 9 can push the stylus 16 inserted into the engine cover to move upward. When the stylus 16 moves up to a suitable height, all the stylus 16 can continue to move with the corresponding box 14. At this time, the No. 1 spring 21 is reset. Under the buffering effect of the water flow, it is possible to avoid the No. 1 spring 21 pushing the connecting seat 15 and the stylus 16 connected to the connecting seat 15 to reciprocate horizontal vibration when the spring 21 is reset, thereby affecting the accuracy of the detection of the stylus 16.

[0083] When the one-way solenoid valve 22 is turned on, the valve limit switch triggers a signal, and the control module receives the signal and increases the control current of the electromagnet 63, thereby increasing the limit stability of the engine hood.

[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0085] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A multifunctional engine hood inspection tool, comprising a workbench (1), characterized in that: The workbench (1) is fixedly connected to a support frame (18), and positioning mechanisms (4) capable of positioning the engine hood in the horizontal direction are arranged on both sides of the support frame (18); a sliding seat (10) is slidably connected to the inner top surface of the support frame (18), and a driving component (3) for driving the sliding seat (10) to move horizontally is arranged on the support frame (18); the sliding seat (10) is fixedly connected to a lifting rod (11), and the telescopic end of the lifting rod (11) is fixedly connected to a fixing plate (12); the end of the fixing plate (12) is fixedly connected to a dust removal mechanism (5), and the dust removal mechanism (5) is connected to a sensing component (7), and the sensing component (7) is capable of sensing the protrusion of the engine hood; The fixing plate (12) is also fixedly provided with an electric rod (19), the telescopic end of the electric rod (19) is fixedly connected to an outer cover (13), the inner part of the outer cover (13) is vertically slidably connected to a plurality of boxes (14), the outer top surface of the outer cover (13) is provided with an elastic component (8) for vertically elastically limiting the boxes (14), the inner end surface of the boxes (14) is slidably and sealedly connected to a connecting seat (15), the bottom surface of the boxes (14) is provided with a strip groove (17), the connecting seat (15) is sealedly connected to the strip groove (17), and a plurality of contact pins (16) are fixedly connected side by side at the bottom of the connecting seat (15), and all the contact pins (16) penetrate the strip groove (17); a buffer component (2) for buffering and positioning the connecting seat (15) is provided in the box (14), and an adjustment component (9) capable of resetting the contact pins (16) upward is provided on the outside of the box (14); Guide mechanisms (6) are provided on both sides of the dust removal mechanism (5); under the positioning effect of the guide mechanisms (6), the engine cover can be relatively parallel to the bottom surfaces of all the boxes (14); A control system, wherein when the stylus (16) performs roughness detection on an engine cover, the control system can prevent the stylus (16) from getting stuck with the engine cover by controlling the buffer component (2), the guide mechanism (6) and the elastic component (8); The buffer assembly (2) comprises a No. 1 spring (21) and a one-way solenoid valve (22); the box (14) is filled with coolant; the No. 1 spring (21) is connected between a connecting seat (15) and an inner end surface of the box (14); and two one-way solenoid valves (22) with opposite guiding directions are arranged on the connecting seat (15).

2. The multifunctional engine hood inspection fixture according to claim 1, characterized in that: The elastic component (8) comprises a driving rod (81), a baffle (82), a No. 4 spring (83) and a housing (84); The outer top surface of the outer cover (13) is fixedly connected to a plurality of outer shells (84), each of the outer shells (84) is fixedly connected to the top of the box body (14), and the interior of the outer shells (84) passes through the interior of the outer cover (13), the outer shells (84) are fixedly connected to a driving rod (81), the telescopic end of the driving rod (81) is fixedly connected to a baffle (82), and a No. 4 spring (83) is elastically abutted between the baffle (82) and the box body (14).

3. The multifunctional engine hood inspection fixture according to claim 1, characterized in that: The adjustment assembly (9) comprises a round table (91) and an adjustment seat (92); the adjustment seat (92) is fixedly connected to the outer bottom surface of the box body (14); each contact pin (16) is fixedly connected to the round table (91); and the surface of the round table (91) facing the adjustment seat (92) is an inclined surface.

4. The multifunctional engine hood inspection fixture according to claim 1, characterized in that: The dust removal mechanism (5) comprises a dust collecting cover (51), a brush (52), a filter box (53) and an air pump (54); The dust collecting hood (51) is fixedly connected to the fixing plate (12); a row of brushes (52) is provided at the bottom of the dust collecting hood (51); a filter box (53) is fixedly connected to the fixing plate (12); the filter box (53) is connected to an air pump (54); and the filter box (53) is communicated with the interior of the dust collecting hood (51).

5. The multifunctional engine hood inspection fixture according to claim 4, characterized in that: The sensing component (7) comprises a slide groove (71), a third spring (72) and a roller (73); A plurality of slide grooves (71) are provided in the dust collecting hood (51), the slide grooves (71) are vertically slidably connected to the side walls of the dust collecting hood (51), a third spring (72) is connected between the slide grooves (71) and the inner end surface of the dust collecting hood (51), and a roller (73) is rotatably connected to the slide grooves (71).

6. The multifunctional engine hood inspection fixture according to claim 1, characterized in that: The positioning mechanism (4) comprises a sleeve (41), a clamp (42), a second spring (43), a bolt (44) and a limit plate (45); The outer sleeve (41) is fixedly connected to the upper end surface of the workbench (1); a clamp (42) is arranged on the inner side of the outer sleeve (41); a side surface of the clamp (42) is fixedly connected to a limiting plate (45); under the limiting action of the limiting plate (45), the clamp (42) can slide vertically parallel to the outer sleeve (41); a plurality of No. 2 springs (43) are vertically connected between the clamp (42) and the outer sleeve (41); and a bolt (44) is threadedly connected to the clamp (42).

7. The multifunctional engine hood inspection fixture according to claim 1, characterized in that: The guide mechanism (6) comprises a guide frame (61), a guide roller (62) and an electromagnet (63); Guide frames (61) are fixedly connected to both sides of the dust collecting cover (51), a row of guide rollers (62) are rotatably connected to the guide frame (61), and a plurality of electromagnets (63) are fixedly connected to the bottom surface of the guide frame (61).

8. The multifunctional engine hood inspection fixture according to claim 5, characterized in that: The control system comprises: A monitoring module, comprising a plurality of pressure sensors and a valve limit switch, wherein a pressure sensor is provided between the third spring (72) and the dust collecting cover (51), and a valve limit switch is provided on the one-way solenoid valve (22); a processing module, which is used to compare the pressure value of the pressure sensor with a preset pressure threshold in the processing module, and to form judgment information, and to trigger a signal according to the judgment information; in addition, when the one-way solenoid valve (22) is turned on, the valve limit switch can trigger a corresponding signal; A control module is used to receive signals from the processing module and control the buffer component (2), the guide mechanism (6) and the elastic component (8).

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