Fixing device for new energy automobile part detection

Abstract

The invention discloses a fixing device for new energy automobile part detection, which relates to the technical field of automobile part detection and comprises a base, a portal frame and a shell. A supporting plate is arranged in the center of the upper end face of the shell. Multiple arc-shaped plates are fixed to the upper end of the supporting plate. An annular plate is transversely arranged at the center of the lower end of a cross beam of the portal frame, and a plurality of strip-shaped holes are obliquely formed between the upper side and the lower side of the annular plate and jointly connected with a positioning mechanism. The positioning mechanism comprises positioning rods vertically sliding in the multiple strip-shaped holes, the side faces of the lower ends of the multiple positioning rods are each horizontally connected with a second conical block, and guide rods are fixedly connected to the interiors of the strip-shaped holes in the length direction; the positioning rod comprises a guide part and a deformation part, the guide part is located at the upper end of the positioning rod, and a guide hole is horizontally formed in the guide part; the bottom end of the deformation part is provided with a slope; the technical effects that the position of the assembly hole can be positioned more quickly before the assembly hole of the brake disc is detected, and the brake disc is not prone to being scratched are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts detection, and in particular to a fixing device for detecting new energy automobile parts. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as power sources (or use conventional vehicle fuels and adopt new vehicle power devices), integrate advanced technologies in vehicle power control and drive, and form vehicles with advanced technical principles, new technologies, and new structures. Auto parts are the various units that constitute the entire vehicle and a product that serves the vehicle. There are many types of new energy vehicle accessories. After the production of auto parts is completed, it is necessary to conduct random inspections on the same batch of parts. At present, when conducting factory inspections on automobile brake discs, it is necessary to inspect the position accuracy, dynamic balance, and double-sided smoothness of the tire bolt assembly holes. In the prior art, the structure of the fixture used to detect auto parts is relatively simple, and it is highly targeted and has a narrow scope of application. During the inspection, the brake disc needs to be manually rounded to accurately fix the brake disc to be inspected on the fixture to avoid large errors when inspecting the position of the bolt assembly hole. In addition, the clamping device cannot rotate the fixed workpiece when used, which is not conducive to detecting the smoothness of the double sides of the brake disc. A Chinese patent with authorization announcement number CN112082747B in the prior art discloses a fixing device for automobile parts inspection, including a base, a gantry and a shell, the shell is fixedly connected to the center of the upper end of the base, the lower ends of the two vertical parts of the gantry are respectively fixedly connected to the centers of the left and right sides of the upper end of the base, a circular opening is opened at the upper end of the shell, and an annular slide groove is opened at the inner edge of the circular opening, an annular slider is slidably connected in the annular slide groove, a circular ring is fixedly connected to the inner side of the annular slider, the side wall of the circular ring is slidably connected to the inner side of the shell, and a plurality of evenly distributed rectangular rods are fixedly connected to the inner side of the circular ring.

[0003] The above-mentioned fixing device for automobile parts detection can fix a variety of automobile parts, and can automatically find the circle when fixing automobile parts, thereby reducing the error when detecting automobile parts. Among them, when the second conical block moves into the assembly hole on the brake disc, by observing the degree of fit between the conical surface of the second conical block and the assembly hole, the opening accuracy of the assembly hole can be judged, thereby improving the speed of detecting the assembly hole on the brake disc; however, when controlling the second conical block to contact the brake disc downward, it is difficult for the user to accurately judge the position of the assembly hole, and it is often necessary to continue to move the second conical block after the second conical block contacts the upper end surface of the brake disc, so as to find the position of the assembly hole, but before the second conical block cooperates with the assembly hole, the tip of the bottom end of the second conical block often scratches the brake disc, and it is easy to damage the second conical block, which may cause a decrease in detection accuracy. Summary of the invention

[0004] The embodiment of the present application solves the technical problem that the conical block in the prior art easily scratches the brake disc when cooperating with the brake disc by providing a fixing device for detecting new energy vehicle parts, and achieves the technical effect of being able to locate the assembly hole position of the brake disc more quickly before detecting the assembly hole of the brake disc, and not easily scratching the brake disc.

[0005] The embodiment of the present application provides a fixture for testing new energy vehicle parts, including a base, a gantry and a shell, wherein the shell is fixedly connected to the center of the upper end of the base, and the lower ends of the two vertical parts of the gantry are respectively fixedly connected to the centers of the left and right sides of the upper end of the base; a support plate for carrying a brake disc is provided at the center of the upper end surface of the shell, and a plurality of arc-shaped plates penetrating into the central circular opening of the brake disc are fixed to the upper end of the support plate;

[0006] An annular plate is transversely arranged at the center of the lower end of the crossbeam of the gantry, and a plurality of evenly distributed strip holes are obliquely opened between the upper and lower sides of the annular plate, and a plurality of the strip holes are commonly connected with a positioning mechanism; the positioning mechanism comprises a positioning rod vertically sliding in the plurality of strip holes, and the lower end side surfaces of the plurality of positioning rods are horizontally connected with a second conical block, and a guide rod is fixedly connected in the length direction of the inner part of the strip hole; the positioning rod comprises a guide part and a deformation part, and the guide part is located at the upper end of the positioning rod, and a guide hole is horizontally opened in the guide part; the deformation part is made of elastic rubber, and the length of the deformation part is four to six times the length of the guide part;

[0007] The bottom end of the deformation portion is provided with an inclined surface, the inclined surface faces the axis of the support plate, and the angle between the inclined surface and the horizontal plane is between 45 degrees and 75 degrees.

[0008] Preferably, the arc plate is used to fix the brake disc, and a motor for driving the support plate and the arc plate to rotate and a second pushing cylinder for driving the support plate to move in the vertical direction are provided inside the shell; the inner side of the annular plate is rotatably connected to a sleeve through a rolling bearing, and a transmission rod is slidably sleeved in the sleeve, and the lower end of the transmission rod passes through the sleeve and is provided with an external thread, and the lower end of the transmission rod is rotatably connected to an inverted first conical block through a sealed bearing, and the center of the arc plate and the support plate are located on the center line of the first conical block; a plurality of evenly distributed connecting rods are fixedly connected to the tube wall of the sleeve, and the ends of the plurality of connecting rods away from the sleeve are rotatably connected to an inclined linkage rod through an axle pin, and the end of the linkage rod away from the sleeve is rotatably connected to one end of the positioning rod through a rotating shaft; the lower end of the crossbeam of the gantry Two directional rods are symmetrically and fixedly connected, and the side walls of the annular plate are slidably sleeved with the rod walls of the two directional rods through two directional holes respectively. A first pushing cylinder is fixedly connected to the center of the upper end of the crossbeam of the gantry, and the end of the piston rod of the first pushing cylinder passes through the crossbeam of the gantry and is fixedly connected to the upper end of the transmission rod through a connecting piece; a threaded hole is penetrated between the inner and outer sides of the annular plate, and a positioning bolt is threadedly connected to the threaded hole, one end of the positioning bolt passes through the threaded hole and is slidably connected to the pipe wall of the sleeve, and two rocker arms are symmetrically and fixedly connected to the pipe wall of the sleeve, and the rocker arms are used to control the rotation of the sleeve; the rocker arm drives the sleeve to rotate on the rod wall of the transmission rod, and when the sleeve rotates, it drives the connecting rod to make the linkage rod push the positioning rod to slide on the guide rod, thereby changing the distance between the positioning rod and the center line of the sleeve.

[0009] Preferably, a positioning block is installed on the side wall of the deformation part away from the support plate, the positioning block is located at the lower end of the deformation part and above the inclined surface, a connecting rod is fixed to the side of the positioning block close to the deformation part, the connecting rod is horizontally arranged, one end of the connecting rod away from the positioning block passes through the side wall of the deformation part and is coaxially fixed with a second conical block, the second conical block is conical as a whole, and the tip of the second conical block faces the side away from the positioning block; the inclination angle of the busbar on the lower side of the second conical block is equal to the inclined surface angle of the bottom end of the deformation part.

[0010] Preferably, the deformation portion includes a transmission portion and a bending portion, the transmission portion is connected to the guide portion, and the bending portion is located at the lower end of the transmission portion; the length of the bending portion is 1 to 1.3 times the length of the transmission portion, and the elastic coefficient of the bending portion is smaller than the elastic coefficient of the transmission portion.

[0011] Preferably, a distance rod is fixed to the side wall below the guide hole of the guide part, the distance rod is horizontally arranged, and a correction column is fixed to the end of the distance rod away from the guide part, the correction column is a vertically arranged column, and the top of the correction column is slidably connected to the guide rod.

[0012] Preferably, a vertical telescopic cavity is opened inside the correcting column, a telescopic spring is fixed on the top of the telescopic cavity, a sliding platform is fixed on the bottom end of the telescopic spring, the sliding platform is slidably connected to the telescopic cavity, a vertical sliding rod is fixed on the bottom of the sliding platform, the bottom end of the sliding rod passes through the bottom side wall of the correcting column, and the sliding rod is slidably connected to the correcting column, a magnetic head is fixed on the bottom end of the sliding rod, and the magnetic head is a permanent magnet; a magnetic block is fixed on the end of the positioning block away from the connecting rod, and the magnetic block is a permanent magnet, and the magnetic poles of the opposing surfaces of the magnetic head and the magnetic block are opposite, and the two can be magnetically attracted to each other.

[0013] Preferably, a lower sensing chamber is coaxially opened in the bending portion, and an upper sensing chamber is coaxially opened in the transmission portion, the upper and lower ends of the upper sensing chamber are open, and the upper end of the lower sensing chamber is open, the upper sensing chamber and the lower sensing chamber are connected to each other through the openings, the upper sensing chamber and the lower sensing chamber are both filled with gas, the bottom end of the lower sensing chamber is located above the connecting rod, the inner edge of the upper end opening of the upper sensing chamber is fixedly connected to the edge of the side wall of the bottom end of the guide portion, and the diameter of the upper sensing chamber is greater than the diameter of the lower sensing chamber.

[0014] Preferably, the distance limit rod includes a coaxially arranged limit cylinder, a connecting tube and a pushing rod, one end of the pushing rod is slidably inserted into the limit cylinder, the limit cylinder is hollow inside, and the other end of the pushing rod is fixedly connected to the side wall of the correction column, the limit cylinder is away from the pushing rod with a connecting tube fixed on the side, the connecting tube is a horizontally arranged hard straight rod, the connecting tube is fixedly connected to the side wall of the guide cylinder at one end away from the limit cylinder, the connecting tube is a tube that is hollow inside and open at both ends, the diameter of the connecting tube is smaller than the diameter of the limit cylinder, and the connecting tube is connected to the internal space of the limit cylinder; an air guide channel is opened in the guide part, one end of the air guide channel is connected to the upper end of the upper sensing chamber, and the other end of the air guide channel is connected to the inside of the connecting tube.

[0015] Preferably, a horizontal sliding table is fixed to one end of the push rod located in the limiting cylinder, and the horizontal sliding table is slidably connected to the internal space of the limiting cylinder. A return spring is fixed to the horizontal sliding table and the end of the limiting cylinder away from the push rod. When the return spring is not subjected to external force, it pulls the horizontal sliding table to be located close to the connecting tube.

[0016] Preferably, a plurality of elastic ropes are provided inside the lower sensing chamber, one end of the plurality of elastic ropes are gathered at the middle of the side wall of the lower sensing chamber close to the positioning block; the other ends of the plurality of elastic ropes are evenly distributed at the middle of the side wall of the lower sensing chamber close to the second conical block.

[0017] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0018] By arranging a deformation part and a guide part on the positioning rod, and arranging an inclined surface at the bottom end of the positioning rod, when the inclined surface at the bottom of the positioning rod does not contact the upper end surface of the brake disc, the axis center line of the second conical block is in a horizontal state, and when the inclined surface at the bottom of the positioning rod contacts the brake disc, the deformation part is bent in the radial direction of the brake disc in a direction away from the axis center line of the annular plate under the guidance of the inclined surface, and at the same time, the conical surface of the second conical block maintains a tangent state with the end surface of the brake disc when sliding on the brake disc, and finally, after the second conical block reaches above the assembly hole, the second conical block is automatically inserted into the assembly hole under the elastic force of the deformation part; the technical problem of the conical block in the prior art that the brake disc is easily scratched during the cooperation with the brake disc is solved, and the technical effect of being able to locate the assembly hole position more quickly before detecting the assembly hole of the brake disc and not easily scratching the brake disc is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0020] Figure 2 This is a schematic top view of an annular plate according to a first embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the state where the deformation part and the brake disc are in conflict with each other in the first embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of a positioning rod according to a first embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the internal structure of the positioning rod and the correction column of the second embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the internal structure of the positioning rod and the correction column of the third embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the internal structure of the distance limiting rod according to the third embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the position of the elastic rope in embodiment 4 of the present invention.

[0027] In the figure:

[0028] Gantry 100; directional rod 110; first push cylinder 200; first conical block 210; base 300; annular plate 400; sleeve 410; rocker arm 411; connecting rod 412; linkage rod 413; strip hole 420; guide rod 421; directional hole 430; housing 500; support plate 510; arc plate 520; brake disc 600; positioning rod 700; guide part 710; air guide channel 711; deformation part 720; transmission part 7 21; bending portion 722; upper sensing chamber 723; lower sensing chamber 724; elastic rope 725; guide hole 730; positioning block 740; second conical block 741; connecting rod 742; magnetic block 743; distance limiting rod 750; limiting cylinder 751; connecting tube 752; pushing rod 753; horizontal sliding table 754; reset spring 755; correction column 760; telescopic chamber 761; telescopic spring 762; sliding table 763; sliding rod 764; magnetic head 765. DETAILED DESCRIPTION

[0029] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0030] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] Embodiment 1: Figures 1 to 4As shown, the present application provides a fixing device for detecting new energy vehicle parts, including a base 300, a gantry 100 and a shell 500, wherein the shell 500 is fixedly connected to the center of the upper end of the base 300, and the lower ends of the two vertical parts of the gantry 100 are respectively fixedly connected to the centers of the left and right sides of the upper end of the base 300; a support plate 510 for carrying a brake disc 600 is provided at the center of the upper end surface of the shell 500, and a plurality of arc plates 520 penetrating into the central circular opening of the brake disc 600 are fixed at the upper end of the support plate 510, and the arc plates 520 are used to fix the brake disc 600, and a motor for driving the support plate 510 and the arc plates 520 to rotate and a second pushing cylinder for driving the support plate 510 to move in the vertical direction are provided inside the shell 500.

[0033] An annular plate 400 is transversely arranged at the center of the lower end of the crossbeam of the gantry 100, and a sleeve 410 is rotatably connected to the inner side of the annular plate 400 through a rolling bearing, and a transmission rod is slidably sleeved in the sleeve 410, and the lower end of the transmission rod passes through the sleeve 410 and is provided with an external thread, and the lower end of the transmission rod is rotatably connected to an inverted first conical block 210 through a sealed bearing, and the centers of the arc plate 520 and the support plate 510 are located on the center line of the first conical block 210; Figure 2 A plurality of evenly distributed strip holes 420 are obliquely opened between the upper and lower sides of the annular plate 400, and a plurality of the strip holes 420 are commonly connected to a positioning mechanism; the positioning mechanism includes a positioning rod 700 that vertically slides in the plurality of strip holes 420, and a second conical block 741 is connected to the lower end of each of the plurality of positioning rods 700, and a guide rod 421 is fixedly connected to the inner length direction of the strip hole 420, and the rod wall of the positioning rod 700 is slidably connected to the rod wall of the guide rod 421 through a guide hole 730, and a plurality of evenly distributed connecting rods 412 are fixedly connected to the tube wall of the sleeve 410, and the plurality of connecting rods 412 are far One end away from the sleeve 410 is rotatably connected with an inclined linkage rod 413 through an axle pin, and the end of the linkage rod 413 away from the sleeve 410 is rotatably connected to one end of the positioning rod 700 through a rotating shaft; the lower end of the crossbeam of the gantry 100 is symmetrically fixedly connected with two directional rods 110, and the side wall of the annular plate 400 is slidably sleeved with the rod wall of the two directional rods 110 through two directional holes 430, and the first push cylinder 200 is fixedly connected at the center of the upper end of the crossbeam of the gantry 100, and the piston rod end of the first push cylinder 200 passes through the crossbeam of the gantry 100 and is fixedly connected to the upper end of the transmission rod through a connecting piece;

[0034] A threaded hole is formed between the inner and outer sides of the annular plate 400, and a positioning bolt is threadedly connected to the threaded hole. One end of the positioning bolt passes through the threaded hole and is slidably connected to the tube wall of the sleeve 410. Two rocker arms 411 are symmetrically fixedly connected to the tube wall of the sleeve 410, and the rocker arms 411 are used to control the rotation of the sleeve 410; the rocker arms 411 drive the sleeve 410 to rotate on the rod wall of the transmission rod, and when the sleeve 410 rotates, it drives the connecting rod 412 to make the linkage rod 413 push the positioning rod 700 to slide on the guide rod 421, thereby changing the distance between the positioning rod 700 and the center line of the sleeve 410.

[0035] The positioning rod 700 includes a guide portion 710 and a deformation portion 720. The guide portion 710 is made of a hard material and is located at the upper end of the positioning rod 700. A guide hole 730 is horizontally opened in the guide portion 710. The deformation portion 720 is made of elastic rubber and the length of the deformation portion 720 is four to six times the length of the guide portion 710.

[0036] The bottom end of the deformation portion 720 is provided with an inclined surface, the inclined surface faces the axis of the support plate 510, and the angle between the inclined surface and the horizontal plane is between 45 degrees and 75 degrees.

[0037] A positioning block 740 is installed on the side wall of the deformation part 720 away from the support plate 510. The positioning block 740 is located at the lower end of the deformation part 720 and above the inclined surface. A connecting rod 742 is fixed to the side of the positioning block 740 close to the deformation part 720. The connecting rod 742 is horizontally arranged. The end of the connecting rod 742 away from the positioning block 740 passes through the side wall of the deformation part 720 and is coaxially fixed with a second conical block 741. The second conical block 741 is conical as a whole, and the tip of the second conical block 741 faces the side away from the positioning block 740; the inclination angle of the busbar on the lower side of the second conical block 741 is equal to the angle of the inclined surface at the bottom end of the deformation part 720.

[0038] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0039] In this embodiment, the positioning rod 700 is provided with a deformation portion 720 and a guide portion 710, and an inclined surface is provided at the bottom end of the positioning rod 700. Figure 1 When the bottom inclined surface of the positioning rod 700 does not contact the upper end surface of the brake disc 600, the axis of the second conical block 741 is in a horizontal state. Figure 3When the inclined surface at the bottom of the positioning rod 700 contacts the brake disc 600, the deformation portion 720 is guided by the inclined surface and bends along the radial direction of the brake disc 600 in a direction away from the axial center line of the annular plate 400. At the same time, the conical surface of the second conical block 741 remains tangent to the end face of the brake disc 600 when sliding on the brake disc 600. Finally, after the second conical block 741 reaches above the assembly hole, the second conical block 741 is automatically inserted into the assembly hole under the elastic force of the deformation portion 720. This solves the technical problem that the conical block of the prior art is easy to scratch the brake disc 600 during the process of cooperating with the brake disc 600, and achieves the technical effect of being able to locate the assembly hole position more quickly before detecting the assembly hole of the brake disc 600, and not easily scratching the brake disc 600.

[0040] Embodiment 2: Considering that the second conical block 741 in the above embodiment 1 has a certain elasticity after being inserted into the assembly hole of the brake disc 600, if the brake disc 600 shakes during the detection process, the second conical block 741 is easy to tilt, so that the user needs to manually correct the second conical block 741, so it is necessary to improve the device, such as Figure 5 As shown, the specific structure is as follows:

[0041] The deformation part 720 includes a transmission part 721 and a bending part 722, the transmission part 721 is connected to the guide part 710, and the bending part 722 is located at the lower end of the transmission part 721; the length of the bending part 722 is 1 to 1.3 times the length of the transmission part 721, and the elastic coefficient of the bending part 722 is smaller than the elastic coefficient of the transmission part 721; when the bending part 722 contacts the brake disc 600, the curvature of the transmission part 721 is smaller than the curvature of the bending part 722, thereby ensuring the overall elastic force of the deformation part 720 while making the shape of the deformation part 720 more controllable, and preventing the deformation part 720 from being insufficiently strong and causing the bending direction to be uncontrollable.

[0042] A limit rod 750 is fixed to a side wall below the guide hole 730 of the guide portion 710. The limit rod 750 is horizontally arranged. A correction column 760 is fixed to one end of the limit rod 750 away from the guide portion 710. The correction column 760 is a vertically arranged column. The top of the correction column 760 is slidably connected to the guide rod 421. A vertical telescopic cavity 761 is provided inside the correction column 760. A telescopic spring 762 is fixed to the top of the telescopic cavity 761. A sliding platform 763 is fixed to the bottom of the telescopic spring 762. The sliding platform 763 is slidably connected to the telescopic cavity 761. A vertical sliding rod 764 is fixed to the bottom of the sliding platform 763. The bottom end of the sliding rod 764 passes through the bottom side wall of the correction column 760, and the sliding rod 764 passes through the bottom side wall of the correction column 760. 64 is slidably connected with the correction column 760, and a magnetic head 765 is fixed at the bottom end of the sliding rod 764, and the magnetic head 765 is a permanent magnet; a magnetic block 743 is fixed at one end of the positioning block 740 away from the connecting rod 742, and the magnetic block 743 is a permanent magnet. The magnetic poles of the magnetic head 765 and the magnetic block 743 on the opposite surfaces are opposite, and the two can be magnetically attracted to each other; when the bending portion 722 bends outward, and the second conical block 741 is inserted into the matching hole of the brake disc 600, its axis is vertical, so that the magnetic block 743 on the positioning block 740 is opposite to the magnetic head 765, so that the two are magnetically attracted to each other, so that the sliding rod 764 fixes the position of the positioning block 740, so that the second conical block 741 can only move in the vertical direction without tilting.

[0043] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0044] This embodiment provides a correction column 760 and divides the deformation part 720 into a transfer part 721 and a bending part 722, thereby solving the technical problem that the second conical block 741 in the above-mentioned embodiment 1 is easy to tilt when the brake disc 600 vibrates, and solving the technical problem that the deformation part 720 is insufficient in strength and the bending direction is easy to be out of control.

[0045] Embodiment 3: Considering that the position of the alignment post 760 in the above-mentioned embodiment 2 is limited by the distance limiting rod 750, and the force of the user's operation of the deformation part 720 against the brake disc 600 is different each time, the bending length of the bending part 722 and the position relative to the alignment post 760 are prone to deviation, which may cause the position of the magnetic head 765 and the magnetic block 743 to be difficult to correspond, so it is necessary to improve the device, such as Figure 6 and Figure 7 As shown, the specific structure is as follows:

[0046] A lower sensing chamber 724 is coaxially opened in the bending portion 722, and an upper sensing chamber 723 is coaxially opened in the transmitting portion 721. The upper and lower ends of the upper sensing chamber 723 are open, and the upper end of the lower sensing chamber 724 is open. The upper sensing chamber 723 and the lower sensing chamber 724 are connected to each other through the openings. The upper sensing chamber 723 and the lower sensing chamber 724 are both filled with gas. The bottom end of the lower sensing chamber 724 is located above the connecting rod 742, and the inner edge of the upper end opening of the upper sensing chamber 723 is fixedly connected to the edge of the side wall of the bottom end of the guide portion 710. The diameter of the upper sensing chamber 723 is greater than the diameter of the lower sensing chamber 724.

[0047] The limiting rod 750 includes a coaxially arranged limiting cylinder 751, a connecting tube 752 and a pushing rod 753, one end of the pushing rod 753 is slidably inserted into the limiting cylinder 751, the limiting cylinder 751 is hollow inside, and the other end of the pushing rod 753 is fixedly connected to the side wall of the correction column 760, the limiting cylinder 751 is fixed with a connecting tube 752 on the side away from the pushing rod 753, the connecting tube 752 is a horizontally arranged hard straight rod, the connecting tube 752 is fixedly connected to the side wall of the guide cylinder at one end away from the limiting cylinder 751, the connecting tube 752 is a tubular shape with a hollow interior and open at both ends, the diameter of the connecting tube 752 is smaller than the diameter of the limiting cylinder 751, and the connecting tube 752 is connected to the internal space of the limiting cylinder 751; an air guide channel 711 is opened in the guide portion 710, one end of the air guide channel 711 is connected to the upper end of the upper sensing chamber 723, and the other end of the air guide channel 711 is connected to the inside of the connecting tube 752;

[0048] A horizontal slide 754 is fixed to one end of the push rod 753 located in the limiting cylinder 751. The horizontal slide 754 is slidably connected to the internal space of the limiting cylinder 751. A return spring 755 is fixed to the horizontal slide 754 and the end of the limiting cylinder 751 away from the push rod 753. When the return spring 755 is not subjected to external force, it pulls the horizontal slide 754 to be located on the side close to the connecting tube 752.

[0049] When the bottom of the deformation part 720 contacts the brake disc 600, the deformation part 720 begins to bend, and at the same time, the upper sensing chamber 723 and the lower sensing chamber 724 inside the bent deformation part 720 are squeezed; after the gas inside the upper sensing chamber 723 and the lower sensing chamber 724 is squeezed, it enters the connecting tube 752 and the limiting cylinder 751 through the air guide channel 711, and the gas pushes the horizontal sliding table 754 to slide away from the connecting tube 752, so that the pushing rod 753 pushes the correction column 760 to move away from the positioning rod 700. The greater the bending degree of the deformation part 720, the longer the extension length of the pushing rod 753, thereby achieving the effect of automatically controlling the position of the magnetic head 765 and making the magnetic head 765 automatically adapt to the position of the magnetic block 743.

[0050] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0051] In this embodiment, an upper sensing chamber 723 and a lower sensing chamber 724 are provided so that the gas pressure inside the upper sensing chamber 723 and the lower sensing chamber 724 changes with the bending degree of the deformation portion 720, thereby controlling the position of the correction column 760. The greater the bending degree of the bending portion 722, the longer the portion of the bending portion 722 that is in a horizontal state after bending, and thus the correction column 760 is also farther away from the guide portion 710, so that the magnetic head 765 automatically adapts to the position of the magnetic block 743.

[0052] Embodiment 4: Considering that the bending portion 722 in the above embodiment can only be deformed by the guidance of the inclined surface at its bottom end, when the bending portion 722 is squeezed and bent, as the brake disc 600 rotates, before the second conical block 741 is inserted into the matching hole, the bending portion 722 may bend in the rotation direction of the brake disc 600, so it is necessary to improve the device, such as Figure 8 As shown, the specific structure is as follows:

[0053] A plurality of elastic ropes 725 are arranged inside the lower sensing chamber 724, and one end of the plurality of elastic ropes 725 are gathered at the middle part of the side wall of the lower sensing chamber 724 close to the positioning block 740; the other ends of the plurality of elastic ropes 725 are evenly distributed at the middle part of the side wall of the lower sensing chamber 724 close to the second conical block 741.

[0054] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0055] In this embodiment, an elastic rope 725 is provided. When the bending portion 722 is bent under force, the elastic potential energy applied by the elastic rope 725 to the lower sensing chamber 724 automatically calibrates the bending direction of the bending portion 722 toward the radial direction of the brake disc 600, thereby preventing the bending portion 722 from excessively bending along the rotation direction of the brake disc 600.

[0056] The above description is only a preferred embodiment of the present invention and is 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 fixture for testing new energy vehicle parts, characterized in that: The invention comprises a base (300), a gantry (100) and a shell (500), wherein the shell (500) is fixedly connected to the center of the upper end of the base (300), and the lower ends of the two vertical parts of the gantry (100) are respectively fixedly connected to the centers of the left and right sides of the upper end of the base (300); a support plate (510) for carrying a brake disc (600) is provided at the center of the upper end surface of the shell (500), and a plurality of arc-shaped plates (520) penetrating into the central circular opening of the brake disc (600) are fixed to the upper end of the support plate (510); An annular plate (400) is transversely arranged at the center of the lower end of the crossbeam of the gantry (100), and a plurality of evenly distributed strip holes (420) are obliquely opened between the upper and lower sides of the annular plate (400), and the plurality of strip holes (420) are commonly connected to a positioning mechanism; the positioning mechanism comprises a positioning rod (700) that vertically slides in the plurality of strip holes (420), and the lower end side surfaces of the plurality of positioning rods (700) are horizontally connected to a second conical block (74 1), a guide rod (421) is fixedly connected to the inner length direction of the strip hole (420); the positioning rod (700) comprises a guide portion (710) and a deformation portion (720), the guide portion (710) is located at the upper end of the positioning rod (700), and a guide hole (730) is horizontally opened in the guide portion (710); the deformation portion (720) is made of elastic rubber material, and the length of the deformation portion (720) is four to six times the length of the guide portion (710); The bottom end of the deformable portion (720) is provided with an inclined surface, the inclined surface faces the axis of the support plate (510), and the angle between the inclined surface and the horizontal plane is between 45 degrees and 75 degrees.

2. The fixture for detecting new energy vehicle parts according to claim 1, characterized in that: The arc plate (520) is used to fix the brake disc (600), and a motor for driving the support plate (510) and the arc plate (520) to rotate and a second push cylinder for driving the support plate (510) to move in the vertical direction are provided inside the shell (500); the inner side of the annular plate (400) is rotatably connected to a sleeve (410) through a rolling bearing, and a transmission rod is slidably sleeved inside the sleeve (410), the lower end of the transmission rod passes through the sleeve (410) and is provided with an external thread, and the lower end of the transmission rod is rotatably connected to an inverted first The conical block (210) has the centers of the arc plate (520) and the support plate (510) located on the center line of the first conical block (210); a plurality of evenly distributed connecting rods (412) are fixedly connected to the tube wall of the sleeve (410); the ends of the plurality of connecting rods (412) away from the sleeve (410) are rotatably connected to an inclined linkage rod (413) through an axle pin; the ends of the linkage rods (413) away from the sleeve (410) are rotatably connected to one end of the positioning rod (700) through a rotating shaft; the lower end of the crossbeam of the gantry (100) is symmetrical. Two directional rods (110) are fixedly connected, and the side walls of the annular plate (400) are slidably connected to the rod walls of the two directional rods (110) through two directional holes (430). A first push cylinder (200) is fixedly connected to the center of the upper end of the crossbeam of the gantry (100), and the piston rod end of the first push cylinder (200) passes through the crossbeam of the gantry (100) and is fixedly connected to the upper end of the transmission rod through a connecting piece; a threaded hole is penetrated between the inner and outer sides of the annular plate (400), and a positioning bolt is threadedly connected to the threaded hole. One end of the positioning bolt passes through the threaded hole and is slidably connected to the tube wall of the sleeve (410); two rocker arms (411) are symmetrically fixedly connected to the tube wall of the sleeve (410); the rocker arms (411) are used to control the rotation of the sleeve (410); the rocker arms (411) drive the sleeve (410) to rotate on the rod wall of the transmission rod; when the sleeve (410) rotates, it drives the connecting rod (412) to make the linkage rod (413) push the positioning rod (700) to slide on the guide rod (421), thereby changing the distance between the positioning rod (700) and the center line of the sleeve (410).

3. The fixture for detecting new energy vehicle parts according to claim 2, characterized in that: A positioning block (740) is installed on the side wall of the deformation part (720) away from the support plate (510), the positioning block (740) is located at the lower end of the deformation part (720) and above the inclined surface, a connecting rod (742) is fixed on the side of the positioning block (740) close to the deformation part (720), the connecting rod (742) is arranged horizontally, one end of the connecting rod (742) away from the positioning block (740) passes through the side wall of the deformation part (720) and is coaxially fixed with a second conical block (741), the second conical block (741) is in a conical shape as a whole, and the tip of the second conical block (741) faces the side away from the positioning block (740); the inclination angle of the generatrix on the lower side of the second conical block (741) is equal to the angle of the inclined surface at the bottom end of the deformation part (720).

4. The fixture for detecting new energy vehicle parts according to claim 3, characterized in that: The deformation portion (720) comprises a transmission portion (721) and a bending portion (722); the transmission portion (721) is connected to the guide portion (710); the bending portion (722) is located at the lower end of the transmission portion (721); the length of the bending portion (722) is 1 to 1.3 times the length of the transmission portion (721); and the elastic coefficient of the bending portion (722) is smaller than the elastic coefficient of the transmission portion (721).

5. The fixture for testing new energy vehicle parts according to claim 4, characterized in that: A distance limiting rod (750) is fixed to a side wall below the guide hole (730) of the guide portion (710). The distance limiting rod (750) is arranged horizontally. A position correction column (760) is fixed to one end of the distance limiting rod (750) away from the guide portion (710). The position correction column (760) is in the shape of a vertical column. The top end of the position correction column (760) is slidably connected to the guide rod (421).

6. The fixture for testing new energy vehicle parts according to claim 5, characterized in that: A vertical telescopic cavity (761) is provided inside the correction column (760), a telescopic spring (762) is fixed at the top of the telescopic cavity (761), a sliding platform (763) is fixed at the bottom of the telescopic spring (762), the sliding platform (763) is slidably connected to the telescopic cavity (761), a vertical sliding rod (764) is fixed at the bottom of the sliding platform (763), and the bottom end of the sliding rod (764) passes through the correction column (760). 0) bottom side wall, and the sliding rod (764) is slidably connected to the correction column (760), a magnetic head (765) is fixed at the bottom end of the sliding rod (764), and the magnetic head (765) is a permanent magnet; a magnetic block (743) is fixed at one end of the positioning block (740) away from the connecting rod (742), and the magnetic block (743) is a permanent magnet, and the magnetic poles of the magnetic head (765) and the magnetic block (743) are opposite, and the two can be magnetically attracted to each other.

7. The fixture for testing new energy vehicle parts according to claim 6, characterized in that: A lower sensing chamber (724) is coaxially opened in the bending portion (722), and an upper sensing chamber (723) is coaxially opened in the transmission portion (721); both upper and lower ends of the upper sensing chamber (723) are open, and the upper end of the lower sensing chamber (724) is open; the upper sensing chamber (723) and the lower sensing chamber (724) are connected to each other through the opening; both the upper sensing chamber (723) and the lower sensing chamber (724) are filled with gas; the bottom end of the lower sensing chamber (724) is located above the connecting rod (742); the inner edge of the upper opening of the upper sensing chamber (723) is fixedly connected to the edge of the side wall of the bottom end of the guide portion (710); and the diameter of the upper sensing chamber (723) is greater than the diameter of the lower sensing chamber (724).

8. The fixture for testing new energy vehicle parts according to claim 7, characterized in that: The distance limiting rod (750) comprises a coaxially arranged limiting cylinder (751), a connecting tube (752) and a pushing rod (753); one end of the pushing rod (753) is slidably inserted into the limiting cylinder (751); the limiting cylinder (751) is hollow inside; the other end of the pushing rod (753) is fixedly connected to the side wall of the correction column (760); a connecting tube (752) is fixed on the side of the limiting cylinder (751) away from the pushing rod (753); the connecting tube (752) is a horizontally arranged hard straight rod; The connecting tube (752) is fixedly connected to the side wall of the guide tube at one end away from the limiting tube (751); the connecting tube (752) is a tube with a hollow interior and openings at both ends; the diameter of the connecting tube (752) is smaller than the diameter of the limiting tube (751); the connecting tube (752) is connected to the internal space of the limiting tube (751); an air guide channel (711) is provided in the guide portion (710); one end of the air guide channel (711) is connected to the upper end of the upper sensing chamber (723), and the other end of the air guide channel (711) is connected to the interior of the connecting tube (752).

9. The fixture for testing new energy vehicle parts according to claim 8, characterized in that: A transverse slide (754) is fixed to one end of the push rod (753) located in the limiting cylinder (751); the transverse slide (754) is slidably connected to the internal space of the limiting cylinder (751); a return spring (755) is fixed to one end of the transverse slide (754) and the inside of the limiting cylinder (751) away from the push rod (753); when the return spring (755) is not subjected to external force, it pulls the transverse slide (754) to be located on the side close to the connecting tube (752).

10. The fixture for testing new energy vehicle parts according to claim 9, characterized in that: A plurality of elastic ropes (725) are arranged inside the lower sensing chamber (724), one end of the plurality of elastic ropes (725) are gathered at a side of the middle part of the side wall of the lower sensing chamber (724) close to the positioning block (740); the other ends of the plurality of elastic ropes (725) are evenly distributed at a side of the middle part of the side wall of the lower sensing chamber (724) close to the second conical block (741).

Images