An inner hole thermal spraying thickness measuring device

Abstract

The present invention relates to the technical field of measuring devices, and proposes an inner hole thermal spraying thickness measuring device, which includes a mounting frame, a connecting plate and a protective frame. A fixed handle is welded and fixed on the top surface of the mounting frame. A stepping displacement assembly is installed at the bottom of the mounting frame. An adjustment and measurement assembly is installed on the connecting plate. A guiding frame is welded and fixed at the bottom of the mounting frame. A second return spring is welded and fixed on the top surface of the guiding frame. The top end of the second return spring is welded and fixed with a second clamping rod. The second clamping rod is slidably connected in the guiding frame. A sliding plate is limited and slidably connected in the guiding frame. A second clamping groove is formed at the top of the sliding plate. The end of the second clamping rod is snap-connected in the second clamping groove. Through the above technical solution, the problem that the existing inner hole thermal spraying thickness measuring device cannot perform automatic, stable and comprehensive measurement of the thickness of inner hole thermal spraying coatings with different diameters and different depths is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring devices, and more specifically, to an inner hole thermal spraying thickness measuring device. Background Art

[0002] Opening an inner hole is a common operation for machining shaft workpieces, and workbenches or molds also need to open inner holes during the machining process. By opening an inner hole, it can be used to connect other components, install bearings, adjust the fit clearance, or achieve other functions. In order to improve the wear resistance, corrosion resistance, high temperature resistance, etc. of the inner hole surface, it is necessary to perform thermal spraying treatment on the surface of the opened inner hole. Since the thickness of the coating directly affects its wear resistance, corrosion resistance, oxidation resistance, etc., after the inner hole is thermally sprayed, it is necessary to use a measuring device to measure the thickness of the thermal spraying coating on the inner hole.

[0003] During the working process of the existing inner hole thermal spraying thickness measuring device, it can usually only measure the thickness at one or more positions of the inner hole. However, when the inner hole is thermally sprayed, the entire inner wall of the inner hole is sprayed. Measuring the thickness at one or more positions does not represent the qualification of the overall thermal spraying coating thickness of the inner hole; and since the diameters and depths of the inner holes on different workpieces are different, and the existing inner hole thermal spraying thickness measuring device cannot perform automatic and stable comprehensive measurement of the thermal spraying coating thickness of inner holes with different diameters and different depths during the actual working process, its practicability and applicability are poor; and the existing inner hole thermal spraying thickness measuring device cannot be positioned and fixed on workpieces of different specifications and sizes during the working process, and thus cannot ensure the accuracy and stability of subsequent measurement work. Therefore, it is necessary to provide an inner hole thermal spraying thickness measuring device to meet the needs of users. Summary of the Invention

[0004] The present invention provides an inner hole thermal spraying thickness measuring device, which solves the problems that the existing inner hole thermal spraying thickness measuring device cannot perform automatic and stable comprehensive measurement of the thermal spraying coating thickness of inner holes with different diameters and different depths, and cannot be positioned and fixed on workpieces of different specifications and sizes.

[0005] The technical solution of the present invention is as follows:

[0006] An inner hole thermal spraying thickness measuring device, comprising a mounting frame, a connecting plate and a protective frame. A fixed handle is welded and fixed on the top end surface of the mounting frame. A stepping displacement component is installed at the bottom of the mounting frame. An adjusting and measuring component is installed on the connecting plate. A guiding frame is welded and fixed at the bottom of the mounting frame. A second return spring is welded and fixed on the top end surface of the guiding frame. The top end of the second return spring is welded and fixed with a second clamping rod. The second clamping rod is slidably connected in the guiding frame. A sliding plate is limited and slidably connected in the guiding frame. A second clamping groove is formed on the top of the sliding plate. The end of the second clamping rod is clamped and connected in the second clamping groove. A support rod is welded and fixed on the bottom end surface of the sliding plate. The bottom end of the support rod is welded and fixed with a fixed block. A third clamping groove and a fourth clamping groove are formed on the fixed block. A rotating shaft is welded and fixed on the fixed block. A second fixing plate is rotatably connected on the rotating shaft. A third return spring is welded and fixed on the second fixing plate. The other end of the third return spring is welded and fixed with a third clamping rod. The third clamping rod penetrates and is slidably connected on the second fixing plate. A support plate is welded and fixed on the bottom end surface of the second fixing plate. A plug tube is welded and fixed on the support plate. A rubber suction cup is connected to the bottom of the plug tube.

[0007] As a preferred solution of the present invention, wherein: the stepping displacement component includes a first connection frame, the first connection frame is welded and fixed on the bottom end surface of the mounting frame, a servo motor is welded and fixed on the top end surface of the first connection frame, the output shaft of the servo motor is rotatably connected to the first connection frame, a turntable is welded and fixed on the output shaft of the servo motor, the turntable is rotatably connected to the bottom of the first connection frame through a bearing, a first fixing plate is welded and fixed on the top end surface of the first connection frame, a first connection shaft is rotatably connected on the first fixing plate, a coil and a first worm gear are welded and fixed on the first connection shaft, a first worm is meshed and connected to the first worm gear, the bottom end of the first worm is rotatably connected to the top end surface of the turntable, the output shaft of the servo motor is connected to the central part of the turntable, the first worms are symmetrically distributed on both sides of the turntable, the first worms correspond to the first worm gears one by one, and the first worm gears correspond to the coils one by one through the first connection shafts.

[0008] As a preferred embodiment of the present invention, the following is provided: A circular gear is fixedly welded to the top end of the first worm gear. A rack is meshed and connected to the circular gear, and the rack is fixedly welded to the inner side end surface of the first connection frame. A first telescopic sleeve rod and a second telescopic sleeve rod are fixedly welded to the bottom end surface of the turntable. The bottom ends of the first telescopic sleeve rod and the second telescopic sleeve rod are both fixedly welded to the top end surface of the connection plate. The cross-sections of the first telescopic sleeve rod and the second telescopic sleeve rod are both rectangular. A strengthening spring is fixedly welded inside the first telescopic sleeve rod. A traction rope is wound around the coil, and the traction rope passes through and is slidably connected to the turntable and the first telescopic sleeve rod. The bottom end of the traction rope is fixedly connected to the inner bottom end surface of the first telescopic sleeve rod.

[0009] As a preferred embodiment of the present invention, the following is provided: The first worm gear corresponds to the rack through the circular gear. The two racks are symmetrically distributed on both sides inside the first connection frame and are arc-shaped. The second telescopic sleeve rod is fixed at the central part of the bottom of the turntable. The first telescopic sleeve rods are symmetrically distributed on both sides of the bottom of the turntable. The first telescopic sleeve rods correspond to the coil through the traction rope.

[0010] As a preferred embodiment of the present invention, the following is provided: The adjustment and measurement assembly includes a second connection frame, a third telescopic sleeve rod, a mounting block, and a storage frame. A scale disk is fixedly welded to the top end surface of the second connection frame. A second worm gear is rotatably connected to the second connection frame. A benchmark is fixedly welded to the second worm gear. A second worm wheel is meshed and connected to the second worm gear. A second connection shaft is fixedly welded to the second worm wheel, and the second connection shaft is rotatably connected inside the second connection frame. An adjustment rod is fixedly welded to the second connection shaft. There are two second connection frames, and the two second connection frames are symmetrically distributed on both sides of the second telescopic sleeve rod. The scale disk is annular and is fixed at the central part of the top end of the second connection frame. The second worm gear is connected to the central part of the top of the second connection frame. The second worm wheels are symmetrically distributed on both sides of the second worm gear and correspond to the second connection shafts one by one. The bottom of the adjustment rod on one side of the second connection shaft is hinged to the side end surface of the connection plate, and the bottom of the adjustment rod on the other side of the second connection shaft is hinged to an adjustment plate.

[0011] As a preferred embodiment of the present invention, wherein: one end of the third telescopic rod is welded and fixed to the top surface of the adjusting plate, and the other end of the third telescopic rod is welded and fixed to the top surface of the connecting plate. A guide rod and a connecting spring are welded and fixed inside the adjusting plate. The connecting spring is sleeved on the guide rod. A guide block is connected to the guide rod in a limited sliding manner. The other end of the connecting spring is welded and fixed to the side end surface of the guide block. A connecting frame is welded and fixed to the bottom end surface of the guide block. A first return spring is welded and fixed to the side end surface of the connecting frame. The other end of the first return spring is welded and fixed to a first clamping rod. The first clamping rod penetrates and is slidably connected to the side of the connecting frame. A first clamping groove is formed on the side end of the mounting block. The end of the first clamping rod is clamped and connected in the first clamping groove. A measuring head is installed on the mounting block. The guide block is fixed to the middle part of the top end of the connecting frame. The first clamping rods are symmetrically distributed on both sides of the connecting frame, and the first clamping rods correspond to the first clamping grooves one by one.

[0012] As a preferred embodiment of the present invention, wherein: a connecting cable is connected to the measuring head, and the other end of the connecting cable is connected to a coating thickness gauge. The coating thickness gauge is bolted and fixed to the mounting plate. The mounting plate is welded and fixed to the bottom end surface of the turntable. The connecting cable is connected to the storage frame in a penetrating and sliding manner. A third connecting shaft is rotatably connected inside the storage frame. A reel is welded and fixed to the third connecting shaft. The connecting cable is fixedly penetrated in the middle of the reel. The connecting cable is wound around the reel. A limiting frame is welded and fixed inside the storage frame. A scroll spring is welded and fixed inside the limiting frame. The inner end of the scroll spring is welded and fixed to the third connecting shaft.

[0013] As a preferred embodiment of the present invention, wherein: the guide frames are symmetrically distributed on both sides of the mounting frame, and the guide frames correspond to the second clamping rods and the sliding plates respectively. The second clamping grooves are equidistantly distributed on the sliding plate. The sliding plate corresponds to the fixed block through the support rod. The third clamping grooves and the fourth clamping grooves are symmetrically distributed on the front and rear sides of the fixed block. The second fixing plates are symmetrically distributed on the front and rear sides of the fixed block. The second fixing plates correspond to the third clamping rods one by one.

[0014] As a preferred embodiment of the present invention, wherein: a filter screen plate is welded and fixed to the top of the plug tube. A threaded rod is threadedly connected to the filter screen plate. The bottom end of the threaded rod is rotatably connected to a connecting block. The bottom end of the connecting block is fixedly connected to a rubber piston. The rubber piston is slidably connected inside the plug tube. A positioning block is welded and fixed to the side end surface of the support plate. A positioning groove is formed on the bottom side end of the protective frame. The positioning block is clamped and connected in the positioning groove. A rubber plate is fixedly connected to the top of the protective frame.

[0015] As a preferred embodiment of the present invention, the following is provided: There are four plug tubes, which are evenly distributed around the pallet. The top surface of the plug tubes is flush with the top surface of the filter screen plate. Both the plug tubes and the rubber pistons are rectangular. The bottom end surface of the rubber suction cups is lower than the bottom end surface of the pallet. The side end surface of the pallet is in contact with the bottom side end surface of the protective frame. The top end surface of the protective frame is in contact with the bottom end surface of the mounting frame. There are two rubber plates, which are symmetrically distributed on both sides of the top of the protective frame, and the two rubber plates are in contact with each other.

[0016] The working principle and beneficial effects of the present invention are as follows:

[0017] 1. In the present invention, a step-by-step displacement component is provided. By using the servo motor, the turntable can be driven to rotate stably, and then the first telescopic rods on both sides and the coils on both sides can be driven to perform synchronous circular motion. And in cooperation with the second telescopic rod and the connecting plate, the adjustment and measurement component can be driven to perform synchronous circular motion. At the same time, during the rotation of the turntable, under the intermittent meshing of the circular gear and the rack, the coil on the first worm gear can be driven to rotate intermittently by the first worm, realizing the intermittent unwinding of the traction rope. In cooperation with the reinforcing spring in the first telescopic rod, the adjustment and measurement component can be driven to move intermittently downward during the circular motion through the connecting plate, realizing the automatic step-by-step displacement work of the adjustment and measurement component. By adjusting the step-by-step displacement distance, the thickness of the inner hole thermal spray coating at different depths can be automatically and stably measured comprehensively, effectively improving the working efficiency of the measuring device, and at the same time increasing the practicability and applicability of the measuring device.

[0018] 2. In the present invention, an adjustment and measurement component is provided. By using the meshing drive between the second worm and the second worm gear, the distance between the two measuring heads can be conveniently and stably adjusted within a large range through the adjusting rod. Furthermore, the applicable range of the measuring device can be effectively improved, enabling the measuring device to conveniently and stably measure the thickness of the thermal spray coating of inner holes with different diameters. And by rotating the adjusting rods on both sides, the whole measuring device can be conveniently folded, ensuring the convenience of subsequent carrying and transporting the measuring device. And during the working process of the step-by-step displacement component, the two measuring heads can be driven to move intermittently downward during the circular motion, so as to comprehensively measure each part of the inner hole of the workpiece from top to bottom, making up for the defect that the existing measuring device cannot perform comprehensive measurement and is prone to errors, and further improving the working efficiency of the measuring device. Moreover, under the cooperation of the first clamping rod and the first clamping groove, the measuring head can be conveniently and stably disassembled and installed, thus ensuring the convenience of subsequent maintenance and repair work of the measuring head and effectively improving the service life of the measuring device.

[0019] 3. In the present invention, a sliding plate, a fixed block, and a rubber suction cup are provided. By means of the cooperation of the second clamping rod and the second clamping groove, the sliding plates on both sides can be conveniently and stably extended and stored, and thus the working positions of the supporting plates on both sides can be conveniently adjusted according to the actual situation. When measuring the thickness of the internal hole thermal spraying on a workbench or a mold, the supporting plates on both sides can be moved to appropriate positions and adsorbed and fixed by combining the respective rubber suction cups to ensure the stability of the subsequent working states of the stepping displacement assembly and the adjustment and measurement assembly. When measuring the thickness of the internal hole thermal spraying of a shaft-like part or a pipeline, by means of the cooperation of the third clamping rod, the third clamping groove, and the fourth clamping groove, the supporting plates on both sides can be rotated 90° towards the middle at the same time, and thus the respective rubber suction cups can be driven to contact the outer wall of the shaft-like part or the pipeline, so that the measuring device as a whole can be conveniently and stably adsorbed and fixed on the outer wall of the shaft-like part or the pipeline, ensuring the convenience and stability of the subsequent measurement work, saving time and effort, and increasing the diversity and convenience of the use of the measuring device.

[0020] 4. In the present invention, a protective frame is provided. After the measurement work is completed, the stepping displacement assembly and the adjustment and measurement assembly can be covered and protected by means of the protective frame. By moving the supporting plates on both sides towards the middle and combining the positioning block and the positioning groove, the protective frame can be conveniently and stably clamped and fixed, and thus the stability of the working state of the protective frame can be ensured, the protection work of the device as a whole can be conveniently realized, and the stability and safety of the subsequent carrying and transporting work of the device as a whole can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0022] Figure 1 is the overall three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 is the connection structural schematic diagram of the supporting plate and the positioning block of the present invention;

[0024] Figure 3 is the connection structural schematic diagram of the protective frame and the rubber plate of the present invention;

[0025] Figure 4 is the connection structural schematic diagram of the limiting frame and the volute spring of the present invention;

[0026] Figure 5 is the connection structural schematic diagram of the connecting cable and the reel of the present invention;

[0027] Figure 6 is the overall front view structural schematic diagram of the present invention;

[0028] Figure 7 is the main sectional structural schematic diagram of the sliding plate of the present invention;

[0029] Figure 8It is a schematic diagram of the connection structure between the pallet and the plug tube of the present invention;

[0030] Figure 9 It is a schematic diagram of the main cross-sectional structure of the pallet of the present invention;

[0031] Figure 10 It is a schematic diagram of the top view structure of the pallet of the present invention;

[0032] Figure 11 It is a schematic diagram of the top cross-sectional structure of the fixing block of the present invention;

[0033] Figure 12 It is the present invention Figure 6 The enlarged structure schematic diagram at position A in;

[0034] Figure 13 It is the present invention Figure 6 The enlarged structure schematic diagram at position B in;

[0035] Figure 14 It is a schematic diagram of the top view structure of the third telescopic sleeve rod of the present invention;

[0036] Figure 15 It is a schematic diagram of the front view structure of the adjusting rod of the present invention;

[0037] Figure 16 It is a schematic diagram of the main cross-sectional structure of the second connecting frame of the present invention;

[0038] Figure 17 It is a schematic diagram of the top view structure of the dial of the present invention;

[0039] Figure 18 It is a schematic diagram of the main cross-sectional structure of the adjusting plate of the present invention;

[0040] Figure 19 It is a schematic diagram of the side cross-sectional structure of the second connecting frame of the present invention;

[0041] Figure 20 It is a schematic diagram of the side cross-sectional structure of the adjusting plate of the present invention;

[0042] Figure 21 It is a schematic diagram of the side view structure of the first telescopic sleeve rod of the present invention;

[0043] Figure 22 It is a schematic diagram of the side cross-sectional structure of the first connecting frame of the present invention;

[0044] Figure 23 It is a schematic diagram of the top cross-sectional structure of the first connecting frame of the present invention;

[0045] Figure 24 It is a schematic diagram of the top view structure of the rack of the present invention;

[0046] Figure 25 It is a schematic diagram of the side cross-sectional structure of the storage box of the present invention.

[0047] In the figure: 1, mounting bracket; 2, fixed handle; 3, stepper shifting assembly; 301, first connecting frame; 302, servo motor; 303, turntable; 304, first fixing plate; 305, first connecting shaft; 306, coil; 307, first worm gear; 308, first worm; 309, circular gear; 310, rack; 311, towing rope; 312, first telescopic sleeve rod; 313, strengthening spring; 314, second telescopic sleeve rod; 4, connecting plate; 5, adjusting and measuring assembly; 501, second connecting frame; 502, dial; 503, second worm; 504, benchmark; 505, second worm gear; 506, second connecting shaft; 507, adjusting rod; 508, adjusting plate; 509, third telescopic sleeve rod; 510, guide rod; 511, connecting spring; 512, guide block; 513, connecting frame; 514, first reset spring; 515, first clamping rod; 516, mounting block; 517, first clamping groove; 518, measuring head; 519, connecting cable; 520, coating thickness gauge; 521, mounting plate; 522, storage box; 523, third connecting shaft; 524, reel; 525, limiting frame; 526, volute spring; 6, guide frame; 7, second reset spring; 8, second clamping rod; 9, sliding plate; 10, second clamping groove; 11, support rod; 12, fixed block; 13, third clamping groove; 14, fourth clamping groove; 15, rotating shaft; 16, second fixing plate; 17, third reset spring; 18, third clamping rod; 19, support plate; 20, plug tube; 21, filter screen plate; 22, threaded rod; 23, rubber piston; 24, rubber suction cup; 25, positioning block; 26, protective frame; 27, positioning groove; 28, rubber plate; 29, connecting block. Detailed implementation manners

[0048] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0049] Embodiment 1, as Figures 1 to 25As shown, the present embodiment proposes an inner hole thermal spraying thickness measuring device, including a mounting frame 1, a connecting plate 4 and a protective frame 26, a fixed handle 2 is welded and fixed on the top surface of the mounting frame 1, a step shift assembly 3 is installed at the bottom of the mounting frame 1, an adjustment measuring assembly 5 is installed on the connecting plate 4, a guide frame 6 is welded and fixed at the bottom of the mounting frame 1, a second reset spring 7 is welded and fixed on the top surface of the guide frame 6, a second clamping rod 8 is welded and fixed on the top of the second reset spring 7, the second clamping rod 8 is slidably connected in the guide frame 6, a sliding plate 9 is limitedly slidably connected in the guide frame 6, a second clamping groove 10 is opened at the top of the sliding plate 9, the end of the second clamping rod 8 is clamped and connected in the second clamping groove 10, a support rod 11 is welded and fixed on the bottom end surface of the sliding plate 9, a fixed block 12 is welded and fixed at the bottom end of the support rod 11, a third clamping groove 13 and a fourth clamping groove 14 are opened on the fixed block 12, a rotating shaft 15 is welded and fixed on the fixed block 12, and a first clamping groove 15 is rotatably connected to the rotating shaft 15 A second fixed plate 16 is welded and fixed with a third return spring 17, and a third clamping rod 18 is welded and fixed to the other end of the third return spring 17. The third clamping rod 18 penetrates and is slidably connected to the second fixed plate 16, and a support plate 19 is welded and fixed to the bottom end surface of the second fixed plate 16, and a plug tube 20 is welded and fixed to the support plate 19. A rubber suction cup 24 is connected to the bottom of the plug tube 20. The measuring range can be conveniently and stably adjusted over a large range by adjusting the measuring component 5, thereby effectively improving the applicable scope of the measuring device, so that the measuring device can conveniently and stably perform thermal spray thickness measurement on inner holes of different diameters, and combined with the step shift component 3, the measuring component 5 can be driven to move down intermittently during the circular motion, thereby being able to perform comprehensive measurement of the inner hole of the workpiece from top to bottom, thereby making up for the defect that the existing measuring device cannot perform comprehensive measurement and is prone to errors, and further improving the working efficiency of the measuring device.

[0050] Embodiment 2, as Figures 1 to 25 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment also proposes an inner hole thermal spraying thickness measuring device.

[0051] In this embodiment, the stepping and shifting assembly 3 includes a first connection frame 301, which is welded and fixed to the bottom end face of the mounting frame 1. A servo motor 302 is welded and fixed to the top end face of the first connection frame 301. The output shaft of the servo motor 302 is rotatably connected to the first connection frame 301. A turntable 303 is welded and fixed to the output shaft of the servo motor 302. The turntable 303 is rotatably connected to the bottom of the first connection frame 301 through a bearing. A first fixing plate 304 is welded and fixed to the top end face of the first connection frame 301. A first connection shaft 305 is rotatably connected to the first fixing plate 304. A coil 306 and a first worm gear 307 are welded and fixed to the first connection shaft 305. A first worm 308 is meshed with the first worm gear 307. The bottom end of the first worm 308 is rotatably connected to the top end face of the turntable 303. The output shaft of the servo motor 302 is connected to the center of the turntable 303. The first worms 308 are symmetrically distributed on both sides of the turntable 303. The first worms 308 correspond to the first worm gears 307 one by one. The first worm gears 307 correspond to the coils 306 one by one through the first connection shafts 305. A circular gear 309 is welded and fixed to the top end of the first worm 308. A rack 310 is meshed with the circular gear 309. The rack 310 is welded and fixed to the inner side end face of the first connection frame 301. A first telescopic rod 312 and a second telescopic rod 314 are welded and fixed to the bottom end face of the turntable 303. The bottom ends of the first telescopic rod 312 and the second telescopic rod 314 are both welded and fixed to the top end face of the connecting plate 4. The cross sections of the first telescopic rod 312 and the second telescopic rod 314 are both rectangular. A reinforcing spring 313 is welded and fixed inside the first telescopic rod 312. A traction rope 311 is wound around the coil 306. The traction rope 311 passes through and is slidably connected to the turntable 303 and the first telescopic rod 312. The bottom end of the traction rope 311 is fixedly connected to the inner bottom end face of the first telescopic rod 312. The first worms 308 correspond to the racks 310 through the circular gears 309. The two racks 310 are symmetrically distributed on both sides inside the first connection frame 301. The racks 310 are arc-shaped. The second telescopic rod 314 is fixed to the bottom center of the turntable 303. The first telescopic rods 312 are symmetrically distributed on both sides of the bottom of the turntable 303. The first telescopic rods 312 correspond to the coils 306 through the traction ropes 311. By using the servo motor 302, the turntable 303 can be driven to rotate stably, and then the first telescopic rods 312 on both sides and the coils 306 on both sides can be driven to perform synchronous circular motion. And in cooperation with the second telescopic rod 314 and the connecting plate 4, the adjustment and measurement assembly 5 can be driven to perform synchronous circular motion. At the same time, during the rotation of the turntable 303, under the intermittent meshing action of the circular gear 309 and the rack 310, the coil 306 on the first worm gear 307 can be driven by the first worm 308 to perform intermittent rotation, realizing the intermittent unwinding of the traction rope 311.Cooperating with the reinforcing spring 313 inside the first telescopic rod 312, the adjustment and measurement assembly 5 can be intermittently moved downward during the circumferential movement through the connection plate 4, realizing the automatic step-by-step displacement work of the adjustment and measurement assembly 5. By adjusting the step-by-step displacement distance, the thickness of the inner hole thermal spraying coating at different depths can be automatically and stably measured comprehensively.

[0052] In this embodiment, the adjustment and measurement assembly 5 includes a second connection frame 501, a third telescopic rod 509, a mounting block 516 and a storage frame 522. A scale disk 502 is welded and fixed on the top end surface of the second connection frame 501. A second worm 503 is rotatably connected to the second connection frame 501. A benchmark 504 is welded and fixed on the second worm 503. A second worm gear 505 is meshed and connected to the second worm 503. A second connecting shaft 506 is welded and fixed on the second worm gear 505. The second connecting shaft 506 is rotatably connected inside the second connection frame 501. An adjusting rod 507 is welded and fixed on the second connecting shaft 506. There are two second connection frames 501, and the two second connection frames 501 are symmetrically distributed on both sides of the second telescopic rod 314. The scale disk 502 is annular, and the scale disk 502 is fixed at the center of the top end of the second connection frame 501. The second worm 503 is connected to the center of the top of the second connection frame 501. The second worm gears 505 are symmetrically distributed on both sides of the second worm 503. The second worm gears 505 correspond to the second connecting shafts 506 one by one. The bottom of the adjusting rod 507 on one side of the second connecting shaft 506 is hinged to the side end surface of the connection plate 4. The bottom of the adjusting rod 507 on the other side of the second connecting shaft 506 is hinged with an adjusting plate 508. By using the meshing drive between the second worm 503 and the second worm gear 505, the distance between the two measuring heads 518 can be conveniently and stably adjusted within a large range through the adjusting rod 507. Furthermore, the applicable range of the measuring device can be effectively improved, enabling the measuring device to conveniently and stably measure the thickness of the thermal spraying of inner holes with different diameters. And by rotating the adjusting rods 507 on both sides, the whole measuring device can be conveniently folded, ensuring the convenience of the subsequent carrying and transporting work of the measuring device.

[0053] In this embodiment, one end of the third telescopic sleeve rod 509 is welded and fixed on the top surface of the adjustment plate 508, and the other end of the third telescopic sleeve rod 509 is welded and fixed on the top surface of the connecting plate 4. A guide rod 510 and a connecting spring 511 are welded and fixed in the adjustment plate 508. The connecting spring 511 is sleeved on the guide rod 510. The guide rod 510 is slidably connected with a guide block 512 in the upper limit position. The other end of the connecting spring 511 is welded and fixed on the side end surface of the guide block 512. A connecting frame 513 is welded and fixed on the bottom end surface of the guide block 512. A first return spring 514 is welded and fixed on the side end surface of the connecting frame 513. A first clamping rod 515 is welded and fixed to the other end of the first return spring 514, and the first clamping rod 515 penetrates and is slidably connected to the side end of the connecting frame 513. A first clamping groove 517 is provided at the side end of the mounting block 516, and the end of the first clamping rod 515 is clamped and connected in the first clamping groove 517. A probe 518 is installed on the mounting block 516, and the guide block 512 is fixed to the middle part of the top of the connecting frame 513. The first clamping rod 515 is symmetrically distributed on both sides of the connecting frame 513, and the first clamping rod 515 corresponds to the first clamping groove 517 one by one. A connecting cable 519 is connected to the probe 518, and the other end of the connecting cable 519 is connected to a coating. Layer thickness gauge 520, coating thickness gauge 520 is bolted to mounting plate 521, mounting plate 521 is welded and fixed to the bottom surface of turntable 303, connecting cable 519 and storage frame 522 are through-slidingly connected, a third connecting shaft 523 is rotatably connected in storage frame 522, a reel 524 is welded and fixed on the third connecting shaft 523, connecting cable 519 is through-fixed in the middle of reel 524, connecting cable 519 is wound around reel 524, a limited position frame 525 is welded and fixed in storage frame 522, a spiral spring 526 is welded and fixed in limit frame 525, the inner end of spiral spring 526 is welded and fixed in On the third connecting shaft 523, during the operation of the stepping shift assembly 3, it can drive the probes 518 on both sides to move downward intermittently during the circular motion, so that comprehensive measurement of all parts of the inner hole of the workpiece can be performed from top to bottom, which makes up for the defect that the existing measuring device cannot perform comprehensive measurement and is prone to errors, and further improves the working efficiency of the measuring device; and under the cooperation of the first clamping rod 515 and the first clamping groove 517, the probe 518 can be conveniently and stably disassembled and installed, thereby ensuring the convenience of subsequent inspection and maintenance of the probe 518, and effectively improving the service life of the measuring device.

[0054] In this embodiment, the guiding frames 6 are symmetrically distributed on both sides of the mounting rack 1. The guiding frames 6 correspond to the second clamping rods 8 and the sliding plates 9 respectively. The second clamping grooves 10 are equidistantly distributed on the sliding plates 9. The sliding plates 9 correspond to the fixing blocks 12 through the support rods 11. The third clamping grooves 13 and the fourth clamping grooves 14 are symmetrically distributed on the front and rear sides of the fixing blocks 12. The included angle between the third clamping groove 13 and the fourth clamping groove 14 is 90°. The second fixing plates 16 are symmetrically distributed on the front and rear sides of the fixing blocks 12. The second fixing plates 16 correspond to the third clamping rods 18. By the cooperation of the second clamping rods 8 and the second clamping grooves 10, the sliding plates 9 on both sides can be conveniently and stably extended and stored, and thus the working positions of the supporting plates 19 on both sides can be conveniently adjusted according to the actual situation. When measuring the thermal spraying thickness of the inner hole on the workbench or the mold, the supporting plates 19 on both sides can be moved to appropriate positions and adsorbed and fixed by the respective rubber suction cups 24 to ensure the stability of the subsequent working states of the stepping displacement assembly 3 and the adjustment and measurement assembly 5. When measuring the thermal spraying thickness of the inner hole of a shaft-like part or a pipeline, by the cooperation of the third clamping rods 18, the third clamping grooves 13 and the fourth clamping grooves 14, the supporting plates 19 on both sides can be rotated 90° towards the middle at the same time, and thus the respective rubber suction cups 24 can be driven to contact the outer wall of the shaft-like part or the pipeline, so that the measuring device as a whole can be conveniently and stably adsorbed and fixed on the outer wall of the shaft-like part or the pipeline, ensuring the convenience and stability of the subsequent measurement work, saving time and effort.

[0055] In this embodiment, a filter plate 21 is fixedly welded to the top of the plug tube 20. A threaded rod 22 is threadedly connected to the filter plate 21. The bottom end of the threaded rod 22 is rotatably connected to a connecting block 29. The bottom end of the connecting block 29 is fixedly connected to a rubber piston 23. The rubber piston 23 is slidably connected within the plug tube 20. A positioning block 25 is fixedly welded to the side end surface of the support plate 19. A positioning groove 27 is formed in the bottom side end of the protective frame 26. The positioning block 25 is snap-fitted within the positioning groove 27. A rubber plate 28 is fixedly connected to the top of the protective frame 26. Four plug tubes 20 are provided. The four plug tubes 20 are evenly distributed around the support plate 19. The top end surface of the plug tube 20 is flush with the top end surface of the filter plate 21. Both the plug tube 20 and the rubber piston 23 are rectangular. The bottom end surface height of the rubber suction cup 24 is lower than the bottom end surface height of the support plate 19. The side end surface of the support plate 19 is in contact with the bottom side end surface of the protective frame 26. The top end surface of the protective frame 26 is in contact with the bottom end surface of the mounting frame 1. Two rubber plates 28 are provided. The two rubber plates 28 are symmetrically distributed on both sides of the top of the protective frame 26. The rubber plates 28 on both sides are in contact with each other. After the measurement work is completed, the protective frame 26 can be used to cover and protect the stepping displacement assembly 3 and the adjustment and measurement assembly 5. By moving the two support plates 19 towards the middle, combined with the positioning block 25 and the positioning groove 27, the protective frame 26 can be conveniently and stably snap-fitted and fixed, thereby ensuring the stability of the working state of the protective frame 26, conveniently realizing the overall protection work of the device, and ensuring the stability and safety of the subsequent carrying and transporting work of the whole device.

[0056] It should be noted that the present invention is an inner hole thermal spraying thickness measuring device. First, the staff can carry and transport the whole device by grasping the fixed handle 2 on the mounting frame 1. After moving to a suitable position, the staff can pull up the second clamping rod 8 on the guiding frame 6 until the second clamping rod 8 moves out of the second clamping groove 10 on the sliding plate 9. Subsequently, the staff can pull the sliding plate 9 towards the side. At this time, under the movement action of the sliding plate 9, the support plate 19 can be driven to move synchronously through the fixed block 12 at the bottom of the support rod 11, and thus the positioning block 25 can be driven to move out of the positioning groove 27 on the protective frame 26. At this time, the staff can remove the protective frame 26.

[0057] Subsequently, the staff can insert the two probes 518 into the inner holes on the workbench or the mold. At this time, the staff can rotate the second worm 503 on the second connecting frames 501 on both sides. During the rotation of the second worm 503, it can drive the benchmark 504 to move above the dial 502. By using the cooperation of the benchmark 504 and the dial 502, the rotation angle of the second worm 503 can be accurately adjusted to ensure that the rotation angles of the second worms 503 on the second connecting frames 501 on both sides are the same. Under the rotation of the second worm 503 on one side, through the second worm wheels 505 engaged on both sides, the corresponding second connecting shafts 506 can be driven to rotate simultaneously, and then the adjusting rods 507 on both sides can be driven to rotate towards the side at the same time. Under the rotation of the adjusting rods 507 on both sides, the adjusting plate 508 on one side can be pushed to move away from the connecting plate 4. At this time, under the guiding action of the third telescopic rod 509, the stable movement state of the adjusting plate 508 can be ensured. Similarly, through the same operation, under the same rotation of the second worm 503 on the other side, combined with the adjusting rod 507, the adjusting plate 508 on the other side can be driven to move away from the connecting plate 4. At this time, the adjusting plates 508 on both sides move towards both sides, and the movement distances are the same, ensuring that the connecting plate 4 is in the middle of the adjusting plates 508 on both sides. By using the movement of the adjusting plates 508 on both sides, it is ensured that the probes 518 on both sides are in close contact with the thermal spray coating of the inner hole.

[0058] Meanwhile, during the movement of the probe 518, when it is in close contact with the thermal spray coating of the inner hole, the adjusting plate 508 is driven. At this time, under the blocking action of the inner wall of the inner hole, the probe 518 can be pushed to move towards the connecting plate 4. Under the guiding action of the guiding rod 510 and the guiding block 512, the probe 518 can push the guiding block 512 to slide on the guiding rod 510 through the connecting frame 513. Under the elastic action of the connecting spring 511, the probe 518 can be pushed to be in close contact with the thermal spray coating of the inner hole through the connecting frame 513 on the guiding block 512. The purpose is to leave a certain margin to avoid the problem that during the movement adjustment of the probes 518 on both sides, the center point between the probes 518 on both sides deviates from the center point of the inner hole, resulting in the inability of the probes 518 on both sides to be in close contact with the thermal spray coating of the inner hole during subsequent rotation and affecting the subsequent measurement work.

[0059] After the probe heads 518 on both sides are adjusted and can be in contact with the inner wall coating of the inner hole, the staff can pull up the second clamping rod 8 on the guide frame 6 again until the second clamping rod 8 moves out of the second clamping groove 10 on the sliding plate 9. Then the staff can pull the sliding plate 9 to move towards the side. At this time, under the movement of the sliding plate 9, it can drive the support plate 19 to move synchronously through the fixing block 12 at the bottom of the support rod 11. By adjusting the position of the support plate 19, ensure that the support plate 19 can be placed at a suitable position on the workbench or the mold. Then the staff can release the second clamping rod 8 on the guide frame 6. At this time, under the elastic action of the second return spring 7, it can drive the second clamping rod 8 to automatically snap into the second clamping groove 10 here. Through the same operation, the position adjustment and clamping fixation of the sliding plates 9 on both sides can be completed. At this time, the support plates 19 on both sides can drive the rubber suction cups 24 below to be in contact with the end face of the workbench or the mold. Then the staff can rotate the threaded rod 22 on the filter screen plate 21. At this time, under the threaded rotation of the threaded rod 22, it can drive the rubber piston 23 to move upward through the rotationally connected connecting block 29. At this time, under the movement of the rubber piston 23, it can suck the air inside the rubber suction cup 24 through the plug tube 20. A negative pressure is formed inside the rubber suction cup 24. Through the same operation, using the internal negative pressure of each rubber suction cup 24, the support plates 19 on both sides can be stably adsorbed and fixed on the end face of the workbench or the mold, completing the adsorption and fixation of the whole device and ensuring the stability of the subsequent measurement work.

[0060] After the whole device is positioned and fixed, the staff can drive the servo motor 302 on the first connecting frame 301. Under the driving action of the servo motor 302, it can drive the turntable 303 to rotate stably through the output shaft. Using the first fixing plate 304 on the turntable 303, it can drive the coils 306 on the first connecting shafts 305 on both sides to perform circular motion. At the same time, the turntable 303 can also drive the first telescopic sleeve rods 312 on both sides to perform synchronous circular motion and can drive the second telescopic sleeve rod 314 to rotate. At this time, under the rotation of the first telescopic sleeve rods 312 on both sides and the rotation of the second telescopic sleeve rod 314 in the middle, it can drive the connecting plate 4 to rotate stably, and then can drive the probe heads 518 on the adjusting plates 508 on both sides to perform stable circular motion through the adjusting rod 507.

[0061] At the same time, during the rotation of the turntable 303, the first worm gears 308 on both sides can be driven to perform circular motion, and then the circular gear 309 on the top of the first worm gear 308 can be driven to move synchronously. At this time, under the circular motion of the circular gears 309 on both sides, they can intermittently mesh with the racks 310 on both sides. The intermittent meshing of the circular gears 309 and the racks 310 can drive the first worm gear 308 to rotate intermittently. By utilizing the intermittent rotation of the first worm gear 308, the first worm gear 307 engaged through the meshing connection can drive the first connecting shaft 305 to automatically rotate during the circular motion. Under the rotation of the first connecting shaft 305, the traction rope 311 can be intermittently unwound through the coil 306. Under the intermittent unwinding of the traction rope 311, the elasticity of the reinforcing spring 313 can be used to push the first telescopic sleeve rod 312 to extend intermittently during the circular motion. Under the intermittent extension of the first telescopic sleeve rod 312, the connecting plate 4 can be pushed to move downward intermittently during the rotation.

[0062] The circular gear 309 on the first worm gear 308 on both sides can be meshed with the rack 310 by rotating half a circle, that is to say, the turntable 303 can intermittently unwind the traction rope 311 by rotating half a circle, and the turntable 303 drives the connecting plate 4 to rotate half a circle through the first telescopic sleeve rod 312 and the second telescopic sleeve rod 314, so as to drive the connecting plate 4 to move downward intermittently, and the connecting plate 4 can drive the probes 518 on both sides to move downward intermittently by rotating half a circle, and the probes 518 on both sides can complete the thermal spray coating measurement work of one circle of the inner hole by rotating half a circle, and so on. Under the continuous rotation and intermittent downward movement of the probes 518 on both sides, When the probe 518 moves down to the bottom of the inner hole, combined with the connecting cable 519 and the coating thickness gauge 520, the thickness of the thermal spray coating of the inner hole can be automatically and stably measured comprehensively; and during the measurement process, the turntable 303 can drive the coating thickness gauge 520 to move synchronously through the mounting plate 521, and during the downward movement of the probe 518, the connecting cable 519 can be pulled. Under the pulling action of the connecting cable 519, the reel 524 on the third connecting shaft 523 can be driven to rotate automatically, thereby ensuring the stability of the unwinding work of the connecting cable 519, and then ensuring the stability of the measurement work.

[0063] After the measurement work is completed, the output shaft on the servo motor 302 can be driven to rotate in the reverse direction, which can then drive the turntable 303 to rotate in the reverse direction, and thus can drive the first worm 308 to rotate in the reverse direction through the circular gear 309 and the rack 310. Under the reverse rotation of the first worm 308, the coil 306 can be driven to automatically wind up the traction rope 311 through the first connecting shaft 305 on the first worm gear 307, and then the first telescopic rod 312 can be driven to automatically contract, thereby driving the connecting plate 4 to move upward and reset. Similarly, by reversely rotating the second worm 503 on the second connecting frame 501, the second worm gears 505 on both sides can be driven to rotate in the reverse direction, and thus the adjusting rods 507 on both sides can be driven to rotate and reset. Then, the operator can pull the second latch 8 on the guide frame 6 upward again until the second latch 8 moves out of the second slot 10 on the sliding plate 9. Subsequently, the operator can push the sliding plates 9 on both sides to move towards the middle. At this time, under the movement of the sliding plates 9, at the same time, the operator can put the protective frame 26 on the adjusting and measuring assembly 5 and the step shifting assembly 3 from bottom to top. The rubber plate 28 can provide safety protection for them. Subsequently, under the movement of the sliding plates 9 on both sides, the positioning block 25 can be driven by the support plate 19 to move and engage with the positioning slot 27 on the protective frame 26 to complete the clamping and fixing of the protective frame 26, ensuring the stability of the subsequent working state of the protective frame 26. Then, by using the clamping of the second latch 8 and the second slot 10, the clamping and fixing of the sliding plate 9 are completed, and thus the folding, storage and protection work of the whole device is completed. And during the contraction of the first telescopic rod 312, under the elastic action of the scroll spring 526 inside the limit frame 525, the reel 524 on the third connecting shaft 523 can be driven to automatically rotate in the reverse direction and automatically wind up the connecting cable 519, ensuring the stability and convenience of the repeated working state of the connecting cable 519.

[0064] When it is necessary to measure the thickness of the thermal spray coating on the inner hole of a shaft part or a pipeline, the staff can remove the protective frame 26. Then, by pulling the third clamping rod 18 on the second fixing plate 16 outwards, under the movement of the third clamping rod 18, it can move out of the third clamping groove 13 on the fixing block 12. Then, under the action of the rotating shaft 15, the staff can rotate the support plate 19 on the second fixing plate 16 by 90°. At this time, under the rotation of the second fixing plate 16, it can drive the third clamping rod 18 to move to the fourth clamping groove 14. Then, the staff can release the third clamping rod 18 on the second fixing plate 16. At this time, under the elastic action of the third return spring 17, it can drive the third clamping rod 18 to automatically engage into the fourth clamping groove 14. Through the same operation, the 90° rotation of the support plate 19 on the other side is carried out. By rotating the support plates 19 on both sides 90° towards the middle, then the staff can, through the same operation as above, by adjusting the elongation distance of the sliding plates 9 on both sides, make each rubber suction cup 24 at the support plates 19 on both sides contact the outer wall of the shaft part or the pipeline, and adsorb and fix the whole measuring device on the outer wall of the shaft part or the pipeline conveniently and stably. Then, through the same operation as above, by driving the stepping displacement assembly 3 and adjusting the measuring assembly 5, an automatic, stable and comprehensive measurement of the thickness of the thermal spray coating on the inner hole of the shaft part or the pipeline can be carried out.

[0065] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An inner hole thermal spraying thickness measuring device, characterized in that: The invention comprises a mounting frame (1), a connecting plate (4) and a protective frame (26), wherein a fixed handle (2) is welded and fixed on the top surface of the mounting frame (1), a stepping shift assembly (3) is installed on the bottom of the mounting frame (1), an adjusting and measuring assembly (5) is installed on the connecting plate (4), a guide frame (6) is welded and fixed on the bottom of the mounting frame (1), a second return spring (7) is welded and fixed on the top surface of the guide frame (6), a second clamping rod (8) is welded and fixed on the top of the second return spring (7), the second clamping rod (8) is slidably connected in the guide frame (6), a sliding plate (9) is slidably connected in the guide frame (6), a second clamping groove (10) is provided on the top of the sliding plate (9), and the second clamping rod (8) is slidably connected in the guide frame (6). The end of the second clamping rod (8) is engaged and connected in the second clamping groove (10); a support rod (11) is welded and fixed on the bottom end surface of the sliding plate (9); a fixed block (12) is welded and fixed on the bottom end of the support rod (11); a third clamping groove (13) and a fourth clamping groove (14) are provided on the fixed block (12); a rotating shaft (15) is welded and fixed on the fixed block (12); a second fixed plate (16) is rotatably connected to the rotating shaft (15); a third return spring (17) is welded and fixed on the second fixed plate (16); a third clamping rod (18) is welded and fixed on the other end of the third return spring (17); the third clamping rod (18) penetrates and is slidably connected to the second fixed plate (16); the third A support plate (19) is welded and fixed to the bottom end surface of the second fixed plate (16), a plug tube (20) is welded and fixed to the support plate (19), and a rubber suction cup (24) is connected to the bottom of the plug tube (20). The stepping displacement assembly (3) comprises a first connecting frame (301), the first connecting frame (301) is welded and fixed to the bottom end surface of the mounting frame (1), a servo motor (302) is welded and fixed to the top end surface of the first connecting frame (301), an output shaft of the servo motor (302) is rotatably connected to the first connecting frame (301), a rotating disk (303) is welded and fixed to the output shaft of the servo motor (302), and the rotating disk (303) is rotatably connected to the bottom of the first connecting frame (301) via a bearing. A first fixing plate (304) is welded and fixed on the top surface of the first connecting frame (301), a first connecting shaft (305) is rotatably connected to the first fixing plate (304), a coil (306) and a first worm wheel (307) are welded and fixed to the first connecting shaft (305), a first worm (308) is meshingly connected to the first worm wheel (307), the bottom end of the first worm (308) is rotatably connected to the top surface of the rotating disk (303), the output shaft of the servo motor (302) is connected to the center of the rotating disk (303), the first worm (308) is symmetrically distributed on both sides of the rotating disk (303), and the first worm (308) corresponds to the first worm wheel (307) one by one.The first worm gear (307) corresponds to the coil (306) one by one via the first connecting shaft (305); a circular gear (309) is welded and fixed to the top end of the first worm gear (308); a rack (310) is meshingly connected to the circular gear (309); the rack (310) is welded and fixed to the inner side end surface of the first connecting frame (301); a first telescopic sleeve rod (312) and a second telescopic sleeve rod (314) are welded and fixed to the bottom end surface of the rotating disk (303); the bottom ends of the first telescopic sleeve rod (312) and the second telescopic sleeve rod (314) are both welded and fixed to the top end surface of the connecting plate (4); the first telescopic sleeve rod (312) and the second telescopic sleeve rod (314) are welded and fixed to the top end surface of the connecting plate (4); The cross-section of the first telescopic sleeve (312) and the cross-section of the second telescopic sleeve (314) are both rectangular. A reinforcing spring (313) is welded and fixed inside the first telescopic sleeve (312). A traction rope (311) is wound around the coil (306). The traction rope (311) passes through and is slidably connected to the turntable (303) and the first telescopic sleeve (312). The bottom end of the traction rope (311) is fixedly connected to the inner bottom end surface of the first telescopic sleeve (312). The adjustment and measurement assembly (5) comprises a second connection frame (501), a third telescopic sleeve (509), a mounting block (516) and a storage frame (522). The second connection frame (501) A scale plate (502) is welded and fixed on the top surface of the second connecting frame (501); a second worm (503) is rotatably connected to the second connecting frame (501); a reference rod (504) is welded and fixed to the second worm (503); a second worm wheel (505) is meshingly connected to the second worm (503); a second connecting shaft (506) is welded and fixed to the second worm wheel (505); the second connecting shaft (506) is rotatably connected to the inside of the second connecting frame (501); an adjusting rod (507) is welded and fixed to the second connecting shaft (506); two second connecting frames (501) are provided, and the two second connecting frames (501) are symmetrically distributed on the second extension. On both sides of the retracting rod (314), the scale plate (502) is in a circular ring shape, the scale plate (502) is fixed at the top center of the second connecting frame (501), the second worm (503) is connected to the top center of the second connecting frame (501), the second worm gear (505) is symmetrically distributed on both sides of the second worm (503), the second worm gear (505) corresponds to the second connecting shaft (506) one by one, the bottom of the adjusting rod (507) on one side of the second connecting shaft (506) is hinged to the side end surface of the connecting plate (4), and the bottom of the adjusting rod (507) on the other side of the second connecting shaft (506) is hinged to the adjusting plate (508).

2. The inner hole thermal spraying thickness measuring device according to claim 1 is characterized in that: The first worm gear (308) corresponds one-to-one with the rack (310) via a circular gear (309); the two racks (310) are centrally symmetrically distributed on both sides of the first connection frame (301); the racks (310) are arc-shaped; the second telescopic sleeve rod (314) is fixed to the bottom center of the rotating disk (303); the first telescopic sleeve rod (312) is symmetrically distributed on both sides of the bottom of the rotating disk (303); the first telescopic sleeve rod (312) corresponds one-to-one with the coil (306) via a traction rope (311).

3. The inner hole thermal spraying thickness measuring device according to claim 1, characterized in that: One end of the third telescopic sleeve rod (509) is welded and fixed to the top end surface of the adjustment plate (508), and the other end of the third telescopic sleeve rod (509) is welded and fixed to the top end surface of the connection plate (4). A guide rod (510) and a connecting spring (511) are welded and fixed inside the adjustment plate (508), and the connecting spring (511) is sleeved on the guide rod (510). The guide rod (510) is slidably connected to the upper limit position with a guide block (512), and the other end of the connecting spring (511) is welded and fixed to the side end surface of the guide block (512). A connecting frame (513) is welded and fixed to the bottom end surface of the guide block (512), and a connecting frame (513) is welded and fixed to the side end surface of the connecting frame (513). A first return spring (514) is fixed, and a first clamping rod (515) is welded and fixed to the other end of the first return spring (514), and the first clamping rod (515) penetrates and is slidably connected to the side end of the connecting frame (513), and a first clamping groove (517) is opened at the side end of the mounting block (516), and the end of the first clamping rod (515) is clamped and connected in the first clamping groove (517), and a probe (518) is installed on the mounting block (516), and the guide block (512) is fixed to the middle part of the top end of the connecting frame (513), and the first clamping rod (515) is symmetrically distributed on both sides of the connecting frame (513), and the first clamping rod (515) corresponds to the first clamping groove (517) one by one.

4. The inner hole thermal spraying thickness measuring device according to claim 3 is characterized in that: The probe (518) is connected to a connecting cable (519), the other end of the connecting cable (519) is connected to a coating thickness gauge (520), the coating thickness gauge (520) is bolted to a mounting plate (521), the mounting plate (521) is welded and fixed to the bottom surface of the turntable (303), the connecting cable (519) and the storage frame (522) are connected in a through-sliding manner, and the storage frame (522) is rotatably connected to a third connecting shaft (520). 23), a reel (524) is welded and fixed on the third connecting shaft (523), the connecting cable (519) passes through and is fixed in the middle of the reel (524), the connecting cable (519) is wound around the reel (524), a limiting frame (525) is welded and fixed in the storage frame (522), a spiral spring (526) is welded and fixed in the limiting frame (525), and the inner end of the spiral spring (526) is welded and fixed on the third connecting shaft (523).

5. The inner hole thermal spraying thickness measuring device according to claim 1, characterized in that: The guide frames (6) are symmetrically distributed on both sides of the mounting frame (1); the guide frames (6) correspond one-to-one with the second clamping rod (8) and the sliding plate (9), respectively; the second clamping grooves (10) are equidistantly distributed on the sliding plate (9); the sliding plate (9) corresponds one-to-one with the fixed block (12) through the support rod (11); the third clamping groove (13) and the fourth clamping groove (14) are symmetrically distributed on the front and rear sides of the fixed block (12); the second fixed plate (16) is symmetrically distributed on the front and rear sides of the fixed block (12); and the second fixed plate (16) corresponds one-to-one with the third clamping rod (18).

6. The inner hole thermal spraying thickness measuring device according to claim 1, characterized in that: A filter plate (21) is welded and fixed to the top of the plug tube (20), a threaded rod (22) is threadedly connected to the filter plate (21), a connecting block (29) is rotatably connected to the bottom end of the threaded rod (22), a rubber piston (23) is fixedly connected to the bottom end of the connecting block (29), and the rubber piston (23) is slidably connected in the plug tube (20), a positioning block (25) is welded and fixed to the side end surface of the support plate (19), a positioning groove (27) is provided at the bottom side end of the protective frame (26), the positioning block (25) is snap-fitted into the positioning groove (27), and a rubber plate (28) is fixedly connected to the top of the protective frame (26).

7. The inner hole thermal spraying thickness measuring device according to claim 6, characterized in that: Four plug tubes (20) are provided, and the four plug tubes (20) are evenly distributed around the support plate (19). The top end surface of the plug tube (20) is flush with the top end surface of the filter plate (21). The plug tube (20) and the rubber piston (23) are both rectangular. The bottom end surface of the rubber suction cup (24) is lower than the bottom end surface of the support plate (19). The side end surface of the support plate (19) is in contact with the bottom side end surface of the protection frame (26). The top end surface of the protection frame (26) is in contact with the bottom end surface of the mounting frame (1). Two rubber plates (28) are provided, and the two rubber plates (28) are symmetrically distributed on both sides of the top of the protection frame (26). The rubber plates (28) on both sides are in contact with each other.

Images