Fastener hole detection device

Abstract

The application discloses a fastener hole detection device and relates to the technical field of fastener installation. The fastener hole detection device comprises a bottom plate, a top plate and a diameter detection assembly. A through hole is formed in the middle of the bottom plate. A connecting block is arranged on the upper surface of the bottom plate. The top end of the connecting block is provided with the diameter detection assembly. Four vertical columns are arranged at the corners of the upper surface of the bottom plate. The top end of each vertical column is provided with the top plate. The top plate is fixedly connected with the vertical columns. A supporting assembly is arranged at the bottom end of the bottom plate. A guide block is arranged in the middle of the bottom of the bottom plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fastener installation, in particular to a fastener hole detection device. BACKGROUND

[0002] Fasteners are often combined with mounting holes, are convenient to use and are widely used in various fields. The current detection methods for the depth of the mounting hole of the fastener mainly include two kinds: 1. section projection method: the nut fastener is symmetrically cut along the hole depth direction, and a projector or a three-coordinate measuring instrument is used for measurement; 2. vernier caliper detection method: the depth end measurement method of the vernier caliper is used for measurement.

[0003] The first method among the above two methods will cause irreversible damage to the installed device, and is low in efficiency. The second method has high requirements for the operation of the workers, and the detected value error is large and the accuracy is not high. SUMMARY

[0004] The purpose of the present application is to provide a fastener hole detection device to solve the problems in the prior art.

[0005] To achieve the above purpose, the present application provides the following technical scheme: the present application provides a fastener hole detection device technical scheme, the detection device includes a bottom plate, a top plate and a diameter detection assembly, a through hole is formed in the middle of the bottom plate, a connecting block is arranged on the upper surface of the bottom plate, the diameter detection assembly is arranged at the top end of the connecting block, four vertical columns are arranged at the four corners of the upper surface of the bottom plate, the top plate is fixedly connected to the vertical columns, a supporting assembly is arranged at the bottom end of the bottom plate, and a guide block is arranged in the middle of the bottom of the bottom plate.

[0006] The detection device is used for detecting the hole position of the fastener installation, so as to know the depth and width of the mounting hole, whether the inner wall of the mounting hole is polished and inclined, and improve the work efficiency. The bottom plate and the top plate are fixed parts, the diameter detection assembly is located between the two, is pushed by the driving device, the vertical columns are used for fixedly connecting the bottom plate and the top plate, then the supporting assembly is used for supporting the whole assembly, the device is erected on the mounting hole, the bottom plate is convenient for the workers to adjust, and the guide block at the bottom of the bottom plate is used for assisting the through hole to align the mounting hole, so that the diameter detection assembly can directly enter the mounting hole.

[0007] Further, the diameter detection assembly includes a first driving push rod and a detection head, the fixed end of the first driving push rod is fixedly connected to the bottom end of the top plate, the output end of the first driving push rod faces the bottom plate, the first driving push rod and the through hole are located on the same central axis, the output end of the first driving push rod is provided with the detection head, and the detection head is fixedly connected to the output end of the first driving push rod.

[0008] The first driving push rod serves as a power source for controlling the downward movement of the detection head, and pushes the detection head to move into the mounting hole, the first driving push rod middle shell is fixedly connected with the top end of the top plate and the top end of the connecting block, the connecting block is annular, the internal space of the connecting block is in communication with the upper through hole, the detection head, the first driving push rod and the connecting block are on the same central axis, and the first driving push rod pushes the detection head to move to the bottom end of the bottom plate through the upper through hole.

[0009] Further, the detection head comprises a column body and a pressing head, one end of the column body is fixedly connected with the output end of the first driving push rod, a hollow cavity is formed in the column body, the pressing head is arranged at the bottom end of the column body and is in sliding connection with the column body, a threaded column is arranged at the top end of the pressing head, an inner bearing is sleeved on the threaded column and is in threaded connection with the threaded column, an outer bearing is arranged on the outer wall of the inner bearing, a connecting rod is arranged on the upper surface of the inner bearing, one end of the connecting rod is in rotary connection with the inner bearing, and the other end of the connecting rod is in rotary connection with the arc-shaped plate.

[0010] The column body serves as the main body of the detection head, the pressing head is used for contacting the bottom end of the inner wall of the mounting hole, and the pressing head is in sliding connection with the bottom end of the column body, so that when the first driving push rod pushes the detection head to move, the bottom end of the detection head contacts the bottom end of the inner wall of the mounting hole, the pressing block at the bottom end of the detection head is pressed and moves upward, the movement of the pressing block drives the threaded column to move upward, the bearing is sleeved on the threaded column, and when the threaded column moves, the inner bearing in the bearing rotates with the threaded column. The outer bearing is fixedly connected with the inner wall of the column body, so the bearing cannot be driven to move upward, and then the inner bearing drives one end of the connecting rod to move in an arc shape when rotating, the other end of the connecting rod drives the arc-shaped plate to move outward, and the arc-shaped plate contacts the inner wall of the mounting hole. The arc-shaped plate is provided with four arc-shaped plates, and the arc-shaped plate is matched with the outer wall of the column body. When the first driving push rod retracts, the output end drives the detection head to move upward, and then the pressing head moves downward due to its own weight. The pressing head drives the threaded column to reverse, the threaded column drives the inner bearing to rotate, the inner bearing drives one end of the connecting rod to rotate, and the other end of the connecting rod drives the arc-shaped plate to move to the outer wall of the column body.

[0011] Further, one side of the arc-shaped plate is provided with a telescopic assembly, the telescopic assembly comprises a telescopic rod, one end of the telescopic rod is in rotary connection with the arc-shaped plate, the other end of the telescopic rod is in rotary connection with the column body, a spring is sleeved on the telescopic rod, and first capacitive blocks are arranged at the two ends of the telescopic rod and are in electrical connection with the telescopic rod.

[0012] The telescopic rod is provided with two ends located at the upper and lower ends of the arc-shaped plate, one end of the telescopic rod is rotationally connected with the arc-shaped plate, the other end is rotationally connected with the column, a spring is sleeved on the telescopic rod, the spring is used to push the arc-shaped plate away from the column, the connecting rod limits the movement of the arc-shaped plate, so that when the arc-shaped plate contacts the inner wall of the mounting hole, the spring will continuously apply force to push one end of the arc-shaped plate to move towards the inner wall of the mounting hole, then the two ends of the telescopic rod are provided with first capacitor blocks, the resistance value between the two first capacitor blocks will change with the moving distance, when the resistance value of the telescopic rod at the top end of the same arc-shaped plate and the resistance value of the telescopic rod at the bottom end have a large difference, the inclination of the inner wall of the mounting hole is judged according to the difference, and it is also judged whether the bottom is concave or the top is concave according to the resistance values of the two telescopic rods.

[0013] Further, the support assembly comprises a connecting piece and a second driving push rod, the connecting piece is bolted to the bottom end of the bottom plate, the second driving push rod is fixedly connected with the connecting piece, and the second driving push rod is provided with a magnetic block at the bottom end.

[0014] The support assembly is used for supporting the overall assembly, so that the device stands on the mounting hole, and the staff can be conveniently adjusted, the connecting piece is used for being connected with the bottom plate, the connecting piece is parallel to the bottom plate, the second driving push rod is perpendicular to the connecting piece, the fixed end of the second driving push rod is fixedly connected with the connecting piece, the output end of the second driving push rod is embedded with a magnetic block, the magnetic block is used for being in contact with the surface where the mounting hole is located, the grip is improved, and the applicable environment is also improved, the second driving push rod and the connecting piece are provided with four corners located at the bottom end of the bottom plate, the detection on the mounting hole in different height differences can be realized by controlling the telescopic degree of the second driving push rod.

[0015] Further, the column is provided with a depth detection assembly on both sides, the depth detection assembly comprises a sliding rod and an iron plate, sliding grooves are formed on both sides of the column, the sliding rod is arranged on the sliding groove, the sliding rod is slidably connected with the sliding groove, the iron plate is arranged on one side of the inner wall of the sliding groove, the iron plate is fixedly connected with the inner wall of the sliding groove, a second auxiliary capacitor block is arranged at one end of the sliding groove, the second auxiliary capacitor block is electrically connected with the iron plate, a second main capacitor block is arranged at one end of the sliding rod, the second main capacitor block is located on the side of the sliding rod close to the iron plate, and the second main capacitor block is electrically connected with the iron plate.

[0016] The depth detection assembly is used for measuring the depth in the mounting hole, and the depth detection assembly is provided with two guide blocks located at two sides of the column body and between the two arc-shaped plates, wherein normally, the sliding rod is located at the bottom end of the sliding groove and is parallel to the central axis of the column body, so that when the first driving push rod pushes the detection head to move downward, the bottom end of the sliding rod is in contact with the opening of the mounting hole and is limited by the mounting hole, but because the sliding rod is in sliding connection with the sliding groove, the sliding rod is driven by the opening to move upward in the sliding groove, during which the second main capacitor block on the sliding rod moves on the iron plate, and the second main capacitor block and the second auxiliary capacitor block are in electrical connection with the iron plate, so that when the sliding rod moves, the distance between the second main capacitor block and the second auxiliary capacitor block is shortened, so that the resistance value between the two changes, and the farther the distance between the two, the higher the resistance value, and vice versa, and the depth of the mounting hole can be known according to the changed resistance value.

[0017] Further, the guide block is in bolt connection with the bottom plate, a lower through hole is formed in the middle of the guide block, the lower through hole is in communication with the upper through hole, and a laser indicator lamp is arranged outside the lower through hole.

[0018] The guide block is located at the bottom end of the bottom plate, the upper through hole of the bottom plate and the guide block are located on the same central axis, and the guide block is connected with the bottom plate through bolts, when the guide block is located at the bottom end of the bottom plate, the laser indicator lamp of the guide block is turned on, and the output end of the laser indicator lamp is located above the mounting hole, so that whether the detection head is located above the mounting hole can be judged through the output end of the laser indicator lamp.

[0019] Further, the bottom plate and the top plate are provided with a control terminal.

[0020] The control terminal is provided with a control panel, and the difference value of the first capacitor block on the telescopic rod is reflected on the control panel, so that the staff can judge the inclination of the inner wall of the mounting hole through the numerical value, and then the numerical value of the first capacitor block on the depth detection assembly is also reflected on the control panel, the control panel is in electrical connection with the first driving push rod, and the control panel is in electrical connection with the second driving push rod.

[0021] Compared with the prior art, the beneficial effects of the present application are:

[0022] 1. In the present application, the detection head pushes the column body through the first driving push rod, so that the pressing head is in contact with the bottom end of the inner wall of the mounting hole, and the inner diameter of the mounting hole is judged through the resistance value between the two first capacitor blocks on the telescopic rod through the cooperation of the inner bearing and the annular plate.

[0023] 2. In the present application, the telescopic assembly pushes the upper and lower ends of the arc-shaped plate, so that the inclination of the inner wall of the mounting hole can be known through the numerical difference between the upper and lower ends.

[0024] 3、The depth detection assembly in the application, along with the work of the first drive push rod, the bottom end of the sliding rod is in contact with the opening of the mounting hole and is limited by the mounting hole, the sliding rod is driven by the opening to move upward in the sliding groove, so that the distance between the second main capacitor block and the second auxiliary capacitor block changes, and the depth of the mounting hole is known according to the changed resistance value. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the structural schematic diagram of the whole application;

[0026] Figure 2 It is the structural schematic diagram of the guide block of the application;

[0027] Figure 3 It is the structural schematic diagram of the upper through hole of the application;

[0028] Figure 4 It is the structural schematic diagram of the support assembly of the application;

[0029] Figure 5 It is the structural schematic diagram of the column body of the application;

[0030] Figure 6 It is the structural schematic diagram of the depth detection assembly of the application;

[0031] Figure 7 It is the structural schematic diagram of the extrusion head of the application;

[0032] Figure 8 It is the structural schematic diagram of the inner bearing of the application;

[0033] Figure 9 It is the structural schematic diagram of the telescopic assembly of the application.

[0034] In the figure: 1, bottom plate;11, upper through hole;2, top plate;3, diameter detection assembly;31, first drive push rod;32, detection head;321, column body;3211, hollow cavity;3212, sliding groove;322, extrusion head;323, threaded column;324, inner bearing;325, outer bearing;326, connecting rod;327, arc plate;33, telescopic assembly;331, telescopic rod;332, spring;333, first capacitor block;4, stand;5, support assembly;51, connecting piece;52, second drive push rod;53, magnetic block;6, guide block;61, lower through hole;7, depth detection assembly;71, sliding rod;72, iron plate;73, second auxiliary capacitor block;74, second main capacitor block;8, laser indicator light;9, control terminal. DETAILED DESCRIPTION

[0035] Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the application.

[0036] Example: Figures 1-9 As shown, the present invention provides a technical solution for a fastener hole in-hole detection device. The detection device includes a base plate 1, a top plate 2 and a diameter detection component 3. The base plate 1 has an upper through hole 11 in the center. A connecting block is provided on the upper surface of the base plate 1. The diameter detection component 3 is provided at the top of the connecting block. Columns 4 are provided at the four corners of the upper surface of the base plate 1. The top plate 2 is provided at the top of the column 4. The top plate 2 is fixedly connected to the column 4. A support component 5 is provided at the bottom of the base plate 1. A guide block 6 is provided in the center of the bottom of the base plate 1.

[0037] Specifically, its detection device is used to detect the hole positions of fastener installation, thereby determining the depth and width of the installation hole, as well as whether the inner wall of the installation hole has been ground and tilted, thus improving work efficiency. Its base plate 1 and top plate 2 are fixed parts, and the diameter detection component 3 is located between the two and is pushed by the drive device. The column 4 is used to fix and connect the base plate 1 and the top plate 2, and then the support component 5 is used to support the whole component, so that the device stands on the installation hole, which is convenient for the staff to adjust. The guide block 6 at the bottom of the base plate 1 is used to assist the upper through hole 11 in aligning with the installation hole, so that the diameter detection component 3 can directly enter the installation hole.

[0038] like Figure 5 As shown, the diameter detection assembly 3 includes a first drive push rod 31 and a detection head 32. The fixed end of the first drive push rod 31 is fixedly connected to the bottom end of the top plate 2. The output end of the first drive push rod 31 faces the bottom plate 1. The first drive push rod 31 and the upper through hole 11 are on the same central axis. The output end of the first drive push rod 31 is provided with a detection head 32, and the detection head 32 is fixedly connected to the output end of the first drive push rod 31.

[0039] Specifically, the first drive push rod 31 serves as a power source to control the downward movement of the detection head 32, pushing the detection head 32 into the mounting hole. The housing of the first drive push rod 31 is fixedly connected to the bottom end of the top plate 2 and the top end of the connecting block. The connecting block is annular, and its internal space is connected to the upper through hole 11. The detection head 32, the first drive push rod 31, and the connecting block are on the same central axis. The first drive push rod 31 will push the detection head 32 through the upper through hole 11 to move to the bottom end of the bottom plate 1.

[0040] like Figure 5 , Figure 7 , Figure 8As shown, the detection head 32 includes a column 321 and a pressing head 322, one end of the column 321 is fixedly connected with the output end of the first driving push rod 31, a hollow cavity 3211 is formed in the column 321, the pressing head 322 is arranged at the bottom end of the column 321 and is in sliding connection with the column 321, a threaded column 323 is arranged at the top end of the pressing head 322, an inner bearing 324 is sleeved on the threaded column 323 and is in threaded connection with the threaded column 323, an outer bearing 325 is arranged on the outer wall of the inner bearing 324, a connecting rod 326 is arranged on the upper surface of the inner bearing 324 and is in rotary connection with the inner bearing 324 at one end, and is in rotary connection with an arc-shaped plate 327 at the other end.

[0041] Specifically, the column 321 serves as the main body of the detection head 32, the pressing head 322 is used to contact the bottom end of the inner wall of the mounting hole, and the pressing head 322 is in sliding connection with the bottom end of the column 321, so that when the first driving push rod 31 drives the detection head 32 to move, the bottom end of the detection head 32 will contact the bottom end of the inner wall of the mounting hole, so that the pressing block at the bottom end of the detection head 32 will be pressed and move upward, the movement of the pressing block will drive the threaded column 323 to move upward, the bearing is sleeved on the threaded column 323, and when the threaded column 323 moves, the inner bearing 324 in the bearing will rotate with the movement of the threaded column 323, wherein the outer bearing 325 is fixedly connected with the inner wall of the column 321, so the inner bearing 324 will not be driven to move upward, and then the inner bearing 324 will drive the one end of the connecting rod 326 to move in an arc shape when the inner bearing 324 rotates, the other end of the connecting rod 326 will drive the arc-shaped plate 327 to move outward, and the arc-shaped plate 327 will contact the inner wall of the mounting hole, the arc-shaped plate 327 is provided with four, and the arc-shaped plate 327 is matched with the outer wall of the column 321, when the first driving push rod 31 retracts, the output end will drive the detection head 32 to move upward, then the pressing head 322 will move downward due to its own weight, the pressing head 322 drives the threaded column 323 to reverse, the threaded column 323 drives the inner bearing 324 to rotate, the inner bearing 324 drives the one end of the connecting rod 326 to rotate, and the other end of the connecting rod 326 drives the arc-shaped plate 327 to move to the outer wall of the column 321.

[0042] As shown in Figure 9 One side of the arc-shaped plate 327 is provided with a telescopic assembly 33, the telescopic assembly 33 includes a telescopic rod 331, one end of the telescopic rod 331 is in rotary connection with the arc-shaped plate 327, the other end of the telescopic rod 331 is in rotary connection with the column 321, a spring 332 is sleeved on the telescopic rod 331, and first capacitive blocks 333 are arranged at both ends of the telescopic rod 331 and are in electrical connection with the telescopic rod 331.

[0043] Specifically, the telescopic rod 331 is provided with two ends located at the upper and lower ends of the arc-shaped plate 327, one end of the telescopic rod 331 is rotationally connected with the arc-shaped plate 327, the other end is rotationally connected with the column 321, a spring 332 is sleeved on the telescopic rod 331, the spring 332 is used for pushing the arc-shaped plate 327 away from the column 321, the connecting rod 326 limits the movement of the arc-shaped plate 327, so that when the arc-shaped plate 327 is in contact with the inner wall of the mounting hole, the spring 332 will continuously apply force to push one end of the arc-shaped plate 327 to move towards the inner wall of the mounting hole, and then the two ends of the telescopic rod 331 are provided with first capacitor blocks 333, the resistance value between the two first capacitor blocks 333 changes with the moving distance, when the resistance value of the telescopic rod 331 at the top of the same arc-shaped plate 327 and the resistance value of the telescopic rod 331 at the bottom have a large difference, the inclination of the inner wall of the mounting hole is judged according to the difference, and it is also judged whether the bottom is concave or the top is concave according to the resistance values of the two telescopic rods 331.

[0044] As shown in Figure 2 , Figure 4 , the support assembly 5 includes a connecting piece 51 and a second driving push rod 52, the connecting piece 51 is bolted to the bottom end of the bottom plate 1, the second driving push rod 52 is fixedly connected with the connecting piece 51, and the second driving push rod 52 is provided with a magnetic block 53 at the bottom end.

[0045] Specifically, the support assembly 5 is used for supporting the whole assembly, so that the device stands on the mounting hole, and it is convenient for the staff to adjust, the connecting piece 51 is used for connecting with the bottom plate 1, the connecting piece 51 is parallel to the bottom plate 1, the second driving push rod 52 is perpendicular to the connecting piece 51, the fixed end of the second driving push rod 52 is fixedly connected with the connecting piece 51, the output end of the second driving push rod 52 is embedded with the magnetic block 53, the magnetic block 53 is used for contacting the surface where the mounting hole is located, so as to improve the grip and the applicable environment, and the second driving push rod 52 and the connecting piece 51 are both provided with four corners located at the bottom end of the bottom plate 1, the detection of the mounting hole in different height difference environments is realized by controlling the telescopic degree of the second driving push rod 52.

[0046] As shown in Figure 5 , Figure 6 , the column 321 is provided with a depth detection assembly 7 on both sides, the depth detection assembly 7 includes a sliding rod 71 and an iron plate 72, the column 321 is provided with a sliding groove 3212 on both sides, the sliding rod 71 is arranged on the sliding groove 3212, the sliding rod 71 is slidingly connected with the sliding groove 3212, the iron plate 72 is arranged on one side of the inner wall of the sliding groove 3212, the iron plate 72 is fixedly connected with the inner wall of the sliding groove 3212, the second auxiliary capacitor block 73 is arranged at one end of the sliding groove 3212, the second auxiliary capacitor block 73 is electrically connected with the iron plate 72, the second main capacitor block 74 is arranged at one end of the sliding rod 71, the second main capacitor block 74 is located on the side of the sliding rod 71 close to the iron plate 72, and the second main capacitor block 74 is electrically connected with the iron plate 72.

[0047] Specifically, the depth detection assembly 7 is used to measure the depth of the mounting hole. The depth detection assembly 7 is provided with two columns 321 located on both sides of the column 321 and between the two arc-shaped plates 327. Normally, the sliding rod 71 is located at the bottom end of the sliding groove 3212, and the sliding groove 3212 is parallel to the central axis of the column 321. Therefore, when the first driving push rod 31 pushes the detection head 32 to move downward, the bottom end of the sliding rod 71 is in contact with the opening of the mounting hole and is limited by the mounting hole. However, because the sliding rod 71 is in sliding connection with the sliding groove 3212, the sliding rod 71 will be driven by the opening to move upward in the sliding groove 3212. During this process, the second main capacitor block 74 on the sliding rod 71 will move on the iron plate 72, and the second main capacitor block 74 is in wire connection with the iron plate 72. The second auxiliary capacitor block 73 is also in wire connection with the iron plate 72. Therefore, when the sliding rod 71 moves, the distance between the second main capacitor block 74 and the second auxiliary capacitor block 73 will be shortened, and the resistance value between the two will change. The farther the distance between the two, the higher the resistance value, and vice versa. The distance between the two is smaller, and the resistance value is lower. According to the changed resistance value, the depth of the mounting hole can be known.

[0048] As shown in Figure 2 , Figure 3 , the guide block 6 is bolted to the bottom plate 1. A lower through hole 61 is formed in the middle of the guide block 6, and the lower through hole 61 is in communication with the upper through hole 11. The guide block 6 is provided with a laser indicator 8.

[0049] Specifically, the guide block 6 is located at the bottom end of the bottom plate 1, and the guide block 6 and the upper through hole 11 of the bottom plate 1 are on the same central axis. The guide block 6 is connected to the bottom plate 1 by bolts. When the guide block 6 is located at the bottom end of the bottom plate 1, the laser indicator 8 thereof is turned on, and the output end of the laser indicator 8 is located above the mounting hole. Whether the detection head 32 is located above the mounting hole can be determined by the output end of the laser indicator 8.

[0050] As shown in Figure 1 , the bottom plate 1 and the top plate 2 are provided with a control terminal 9.

[0051] Specifically, the control terminal 9 is provided with a control panel. The difference between the first capacitor block 333 on the telescopic rod 331 will be reflected on the control panel, so that the staff can determine the inclination of the inner wall of the mounting hole by the numerical value. The numerical value of the first capacitor block 333 on the depth detection assembly 7 will also be reflected on the control panel. The control panel is electrically connected to the first driving push rod 31 and the second driving push rod 52.

[0052] Working principle: through the control panel control first drive push rod 31 work, first drive push rod 31 push detection head 32 moves, its detection head 32 bottom end will contact the installation hole inner wall bottom end, so that the extrusion block of detection head 32 bottom end will be pressed, move upwards, extrusion block moves will drive threaded column 323 move upwards, when threaded column 323 moves, its bearing in the inner bearing 324 will rotate with threaded column 323 moves, when inner bearing 324 rotates will drive connecting rod 326 one end arc-shaped movement, connecting rod 326 the other end will push arc-shaped plate 327 move outward, its arc-shaped plate 327 will be in contact with the installation hole inner wall, so that when arc-shaped plate 327 and installation hole inner wall contact, spring 332 will continue to exert force to push arc-shaped plate 327 one end to the installation hole inner wall, then telescopic rod 331 both ends are provided with first capacitor block 333, according to the numerical value to determine the installation hole inner wall inclination and hole diameter, at the same time, when first drive push rod 31 push detection head 32 downward, its sliding rod 71 bottom end and installation hole opening contact, and be limited by installation hole, sliding rod 71 will be driven by the opening to move upwards in sliding groove 3212, between the second main capacitor block 74 on sliding rod 71 will move on the iron plate 72, so that when sliding rod 71 moves, the distance between the second main capacitor block 74 and the second auxiliary capacitor block 73 will be shortened, according to the changed resistance value to know the depth of installation hole.

[0053] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application is made with reference to the foregoing embodiments, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of the present application.

Claims

1. A fastener hole detection device characterized by: The detection device includes a bottom plate (1), a top plate (2) and a diameter detection assembly (3), the bottom plate (1) is centrally provided with an upper through hole (11), the upper surface of the bottom plate (1) is provided with a connecting block, the top end of the connecting block is provided with the diameter detection assembly (3), the four corners of the upper surface of the bottom plate (1) are provided with stand columns (4), the top ends of the stand columns (4) are provided with the top plate (2), the top plate (2) is fixedly connected with the stand columns (4), and the bottom end of the bottom plate (1) is provided with a supporting assembly (5); and the bottom plate (1) is centrally provided with a guide block (6) at the bottom. The diameter detection assembly (3) includes a first driving push rod (31) and a detection head (32), the fixed end of the first driving push rod (31) is fixedly connected with the bottom end of the top plate (2), the output end of the first driving push rod (31) faces the bottom plate (1), the first driving push rod (31) is located on the same central axis as the upper through hole (11), and the output end of the first driving push rod (31) is provided with the detection head (32); and the detection head (32) is fixedly connected with the output end of the first driving push rod (31). The detection head (32) includes a column body (321) and a pressing head (322), one end of the column body (321) is fixedly connected with the output end of the first driving push rod (31), the column body (321) is internally provided with a hollow cavity (3211), the bottom end of the column body (321) is provided with the pressing head (322), the pressing head (322) is in sliding connection with the column body (321), the top end of the pressing head (322) is provided with a threaded column (323), the threaded column (323) is provided with an inner bearing (324) in a sleeved manner, the inner bearing (324) is in threaded connection with the threaded column (323), the outer wall of the inner bearing (324) is provided with an outer bearing (325), the upper surface of the inner bearing (324) is provided with a connecting rod (326), one end of the connecting rod (326) is rotatably connected with the inner bearing (324), and the other end of the connecting rod (326) is rotatably connected with an arc-shaped plate (327). One side of the arc-shaped plate (327) is provided with a telescopic assembly (33), the telescopic assembly (33) includes a telescopic rod (331), one end of the telescopic rod (331) is rotatably connected with the arc-shaped plate (327), the other end of the telescopic rod (331) is rotatably connected with the column body (321), the telescopic rod (331) is provided with a spring (332) in a sleeved manner, and the two ends of the telescopic rod (331) are provided with first capacitor blocks (333); and the first capacitor blocks (333) are electrically connected with the telescopic rod (331). The column (321) is provided with a depth detection assembly (7) on both sides, the depth detection assembly (7) comprises a sliding rod (71) and an iron plate (72), the column (321) is provided with a sliding groove (3212) on both sides, the sliding groove (3212) is provided with the sliding rod (71), the sliding rod (71) is in sliding connection with the sliding groove (3212), one side of the inner wall of the sliding groove (3212) is provided with the iron plate (72), the iron plate (72) is fixedly connected with the inner wall of the sliding groove (3212), one end of the sliding groove (3212) is provided with a second auxiliary capacitor block (73), the second auxiliary capacitor block (73) is electrically connected with the iron plate (72), one end of the sliding rod (71) is provided with a second main capacitor block (74), the second main capacitor block (74) is located on the side of the sliding rod (71) close to the iron plate (72), and the second main capacitor block (74) is electrically connected with the iron plate (72).

2. A fastener hole inspection apparatus according to claim 1, wherein: The support assembly (5) comprises a connecting piece (51) and a second driving push rod (52), the connecting piece (51) is bolted to the bottom end of the bottom plate (1), and the second driving push rod (52) is fixedly connected with the connecting piece (51).

3. A fastener hole inspection apparatus as defined in claim 2, wherein: The guide block (6) is bolted to the bottom plate (1), the guide block (6) is provided with a lower through hole (61) in the middle, the lower through hole (61) is communicated with the upper through hole (11), and the lower through hole (61) is provided with a laser indicator (8) outside.

4. A fastener hole inspection apparatus as defined in claim 3, wherein: The bottom plate (1) and the top plate (2) are provided with a control terminal (9).

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