Auxiliary device for measuring shaft parameters

Abstract

The present invention belongs to the technical field of shaft rod dimension measurement, and in particular, relates to an auxiliary device for measuring shaft rod parameters, including a support frame and a measuring box arranged on the upper side wall of the support frame, and a protective door is hinged on the front side of the measuring box, and an operation panel, a PLC controller and a display screen are fixedly connected to the right side wall of the measuring box. When the present invention detects the dimensions of the shaft rod, a straightness detection component, a diameter detection component, and a straightness detection component can be used to detect the straightness and roundness simultaneously in one detection process, which greatly improves the detection efficiency of the auxiliary device, and when the roundness of the shaft rod is detected, multiple multi-point detections can be performed to ensure the accuracy of the shaft rod detection results, and the part clamped by the clamping component can be detected.

Description

Technical Field

[0001] The invention belongs to the technical field of shaft rod size measurement, and in particular relates to an auxiliary device for measuring shaft rod parameters. Background Art

[0002] As an important transmission component and supporting component, the shaft rod is usually a cylindrical structure when it is just produced. After the shaft rod is produced, its size needs to be measured. For example, an auxiliary device for measuring shaft rod parameters proposed in patent announcement number CN205246051U is easier to use and more suitable for practical applications.

[0003] However, when inspecting the size of the shaft rod, the shaft rod needs to be fixed with a clamp, and then multiple inspection devices are used to inspect the length, diameter, straightness and roundness of the shaft rod respectively. In this process, a large number of devices are used, which will reduce the inspection efficiency. Moreover, after the shaft rod is clamped with a clamp, the part of the shaft rod surface clamped by the clamp cannot be inspected, and there are inspection omissions. In addition, when measuring the roundness of the shaft rod, a few measurement points are usually randomly selected on the shaft rod surface for inspection, and the number of inspections is small, which affects the accuracy of the inspection results.

[0004] Therefore, an auxiliary device for measuring shaft rod parameters is proposed to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide an auxiliary device for measuring shaft parameters in view of the above problems.

[0006] To achieve the above object, the present invention adopts the following technical solutions: an auxiliary device for measuring shaft parameters, comprising a support frame and a measuring box arranged on the upper side wall of the support frame, wherein a protective door is hingedly connected to the front side of the measuring box, and an operation panel, a PLC controller and a display screen are fixedly connected to the right side wall of the measuring box, and further comprising:

[0007] Two clamping assemblies are located on the lower inner wall of the measuring box to clamp and fix the shaft to be measured;

[0008] A linear motor is fixedly connected to the upper inner wall of the measuring box, the moving end of the linear motor is connected to a mounting cylinder through a straightness detection component, a diameter detection component is provided on the left side of the mounting cylinder, and a roundness detection component is provided on the right side of the mounting cylinder;

[0009] The distance component is connected to the right side of the mounting tube and is used to measure the length of the shaft to be measured.

[0010] Preferably, the clamping assembly includes a clamping electric push rod and a lifting plate, the clamping electric push rod is fixedly connected to the lower inner wall of the measuring box, the moving end of the clamping electric push rod is fixedly connected to the lifting plate, two electric clamps are fixedly connected to the upper side wall of the lifting plate, a laser receiver is fixedly connected to the rear inner wall of the measuring box, the laser receiver is electrically connected to the clamping electric push rod and the electric clamp through a PLC controller, and the linear motor is connected to a laser generator through a straightness detection assembly.

[0011] Preferably, the straightness detection assembly includes a fixed cylinder and a movable cylinder, the laser generator is fixedly connected to the left side wall of the fixed cylinder, the upper end of the fixed cylinder is fixedly connected to the movable end of the linear motor, the movable cylinder is inserted in the lower opening of the fixed cylinder, and is fixedly connected to the fixed cylinder by a positioning bolt, the upper inner wall of the movable cylinder is fixedly connected to a lifting seat by a spring, the left side wall of the lifting seat is fixedly connected to a conductive cone, the conductive cone is electrically connected to an external power supply, the left inner wall of the movable cylinder is inlaid with a first resistor plate and a second resistor plate, the ends of the first resistor plate and the second resistor plate that are away from each other are electrically connected to a PLC controller and a display screen, the lower side wall of the lifting seat is fixedly connected to a lifting rod, the lower end of the lifting rod extends out of the movable cylinder and is fixedly connected to the mounting cylinder.

[0012] Preferably, the diameter detection assembly includes two bent plates and two small electric push rods, the two bent plates are symmetrically fixedly connected to the outer walls on both sides of the mounting cylinder, the two small electric push rods are respectively fixedly connected to the two bent plates, the moving ends of the two small electric push rods are fixedly connected to rollers through pressure sensors, the rod walls of the moving ends of the two small electric push rods are connected to cross plates, the lower side wall of the cross plate located on the upper side is fixedly connected to a conduction frame, the conduction frame is electrically connected to an external power supply, the upper side wall of the cross plate located on the lower side is fixedly connected to a third resistor plate, and the upper end of the third resistor plate is electrically connected to the display screen through a PLC controller.

[0013] Preferably, the roundness detection assembly includes a rotating cylinder and a micro electric push rod, the rotating cylinder is rotatably connected to the inner wall of the mounting cylinder through a bearing, the micro electric push rod is fixedly connected to the inner wall of the rotating cylinder, the lower inner wall of the measuring box is fixedly connected with a roundness meter, the moving end of the micro electric push rod is fixedly connected with a probe electrically connected to the roundness meter through a pressure sensor, the upper side wall of the mounting cylinder is fixedly connected with a driving motor, and the output end of the driving motor is transmission-connected to the rotating cylinder through a gear ring transmission assembly.

[0014] Preferably, a light board is fixedly connected to the upper side wall of the measuring box, a row of yellow light beads and a row of red light beads are connected to the front side wall of the light board, a plurality of trigger blocks and trigger plates are inlaid on the upper inner wall of the measuring box, the trigger plate is located on the rear side of the trigger block, the trigger block is electrically connected to the corresponding yellow light beads through the PLC controller, the trigger plate is electrically connected to the corresponding red light beads through the PLC controller, the front side wall of the fixed cylinder is fixedly connected to two trigger seats through a bracket, the ends of the first resistor plate and the second resistor plate that are away from each other are electrically connected to the trigger seat on the front side, and the roundness meter is electrically connected to the trigger seat on the rear side.

[0015] Preferably, the distance assembly includes a distance cylinder and a movable plate, the distance cylinder is fixedly connected to the upper side wall of the mounting cylinder through a bracket, the movable plate is slidably arranged in the distance cylinder, and is fixedly connected to the upper inner wall of the distance cylinder through a spring, the lower side wall of the movable plate is fixedly connected with a square rod, the lower end of the square rod extends out of the distance cylinder and is fixedly connected with a conical table, the lower side wall of the conical table is provided with a groove, and a trigger switch is fixedly connected in the groove, the trigger switch is electrically connected to the display screen through a PLC controller, and the pressing part of the trigger switch is connected to a hemispherical seat, and the lower end of the hemispherical seat extends out of the groove.

[0016] Preferably, the rear inner wall of the measuring box is fixedly connected to a porous box, the left side wall of the measuring box is fixedly connected to an air pump and a heating box, the air outlet of the air pump is connected to the lower side wall of the heating box, a plurality of heating wires are fixedly connected to the inner wall of the heating box, and the heating box and the porous box are fixedly connected via the same horizontal pipe.

[0017] Compared with the existing technology, the advantages of an auxiliary device for measuring shaft parameters are:

[0018] By setting up the straightness detection component, diameter detection component, distance detection component and roundness detection component, when detecting the size of the shaft rod, the straightness detection component, diameter detection component, distance detection component and roundness detection component can be used respectively in one detection process to assist the operator to simultaneously detect the straightness, diameter, length and roundness of the shaft rod, thereby greatly improving the detection efficiency of the auxiliary device, and when detecting the roundness of the shaft rod, multiple multi-point detections can be performed to ensure the accuracy of the shaft rod detection results.

[0019] By setting up the clamping assembly, laser generator and laser receiver, during the process of detecting the size of the shaft rod, a clamping assembly can be used to clamp and fix the end of the shaft rod that is farther away from the detection assembly. When the detection assembly moves to the middle area of ​​the shaft rod, another clamping assembly can be used to automatically clamp the detected end of the shaft rod, and at the same time, the initial clamping assembly is controlled to separate from the shaft rod so that the detection assembly can detect the part clamped by the clamping assembly.

[0020] Through the set light board, yellow light beads and red light beads, when the size of the shaft rod is inspected, if the inspection finds problems with the roundness and straightness of the shaft rod, the yellow light beads and red light beads can be used to prompt the specific location of the problem of the roundness and straightness of the shaft rod, assisting the operator to find the problem area of ​​the shaft rod and repair it later. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of an auxiliary device for measuring shaft rod parameters provided by the present invention;

[0022] Figure 2 It is a structural schematic diagram of an auxiliary device for measuring shaft rod parameters provided by the present invention;

[0023] Figure 3 It is a structural schematic diagram of a straightness detection component and a diameter detection component in an auxiliary device for measuring shaft parameters provided by the present invention;

[0024] Figure 4 The invention provides an auxiliary device for measuring shaft parameters. Figure 3 A magnified schematic diagram of part A;

[0025] Figure 5 It is a structural schematic diagram of a roundness detection component in an auxiliary device for measuring shaft parameters provided by the present invention;

[0026] Figure 6 It is a structural schematic diagram of a distance component in an auxiliary device for measuring shaft parameters provided by the present invention;

[0027] Figure 7 It is a partial right view of a rotating roller and a shaft to be measured in an auxiliary device for measuring shaft parameters provided by the present invention;

[0028] Figure 8 It is a partial right-view cross-sectional view of the upper side wall of a detection box in an auxiliary device for measuring shaft rod parameters provided by the present invention.

[0029] In the figure: 1 support frame, 2 measuring box, 3 operation panel, 4 PLC controller, 5 display screen, 6 shaft rod to be measured, 7 linear motor, 8 mounting cylinder, 9 clamping assembly, 91 clamping electric push rod, 92 lifting plate, 10 electric clamping claw, 11 laser receiver, 12 laser generator, 13 straightness detection assembly, 131 fixed cylinder, 132 moving cylinder, 14 lifting seat, 15 conductive cone, 16 first resistor plate, 17 second resistor plate, 18 lifting rod, 19 diameter detection assembly, 191 bending plate, 192 small electric push rod, 20 roller, 21 horizontal plate, 22 conduction frame, 23 third resistor plate, 24 roundness detection component, 241 rotating cylinder, 242 micro electric push rod, 25 roundness meter, 26 probe, 27 drive motor, 28 lamp board, 29 yellow lamp beads, 30 red lamp beads, 31 trigger block, 32 trigger plate, 33 trigger seat, 34 distance component, 341 distance cylinder, 342 movable plate, 35 square rod, 36 conical table, 37 trigger switch, 38 hemispherical seat, 39 porous box, 40 air pump, 41 heating box, 42 heating wire, 43 horizontal tube. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] like Figure 1-Figure 8 As shown, an auxiliary device for measuring shaft parameters includes a support frame 1 and a measuring box 2 arranged on the upper side wall of the support frame 1, and a protective door is hinged on the front side of the measuring box 2, and an operation panel 3, a PLC controller 4 and a display screen 5 are fixedly connected to the right side wall of the measuring box 2, and also includes:

[0032] Two clamping assemblies 9 are located on the lower inner wall of the measuring box 2 to clamp and fix the shaft rod 6 to be measured. The clamping assembly 9 includes a clamping electric push rod 91 and a lifting plate 92. The clamping electric push rod 91 is fixedly connected to the lower inner wall of the measuring box 2. The moving end of the clamping electric push rod 91 is fixedly connected to the lifting plate 92. The upper side wall of the lifting plate 92 is fixedly connected to two electric clamps 10. The rear inner wall of the measuring box 2 is fixedly connected to a laser receiver 11. The laser receiver 11 is connected to the clamping electric push rod 91 and the electric push rod 91 through the PLC controller 4. The movable clamping jaw 10 is electrically connected, and the linear motor 7 is connected to the laser generator 12 through the straightness detection component 13. In the process of detecting the size of the shaft rod, a clamping component 9 can be used to clamp and fix the end of the shaft rod that is far from the detection component. When the detection component moves to the middle area of ​​the shaft rod, another clamping component 9 can be used to automatically clamp the detected end of the shaft rod, and at the same time, the initial clamping component 9 is controlled to separate from the shaft rod, so that the detection component can detect the part clamped by the clamping component 9;

[0033] The straightness detection assembly 13 includes a fixed cylinder 131 and a moving cylinder 132, the laser generator 12 is fixedly connected to the left side wall of the fixed cylinder 131, the upper end of the fixed cylinder 131 is fixedly connected to the moving end of the linear motor 7, the moving cylinder 132 is inserted into the lower opening of the fixed cylinder 131, and is fixedly connected to the fixed cylinder 131 through a positioning bolt, the upper inner wall of the moving cylinder 132 is fixedly connected to the lifting seat 14 through a spring, the left side wall of the lifting seat 14 is fixedly connected to a conductive cone 15, the conductive cone 15 is electrically connected to an external power supply, the left inner wall of the moving cylinder 132 is inlaid with a first resistor plate 16 and a second resistor plate 17, the ends of the first resistor plate 16 and the second resistor plate 17 that are away from each other are electrically connected to the PLC controller 4 and the display screen 5, the lower side wall of the lifting seat 14 is fixedly connected to a lifting rod 18, the lower end of the lifting rod 18 extends out of the moving cylinder 132, and is fixedly connected to the mounting cylinder 8, so as to detect the straightness of the shaft rod 6 to be measured;

[0034] The linear motor 7 is fixedly connected to the upper inner wall of the measuring box 2. The moving end of the linear motor 7 is connected to the mounting cylinder 8 through the straightness detection component 13. The left side of the mounting cylinder 8 is provided with a diameter detection component 19, and the right side of the mounting cylinder 8 is provided with a roundness detection component 24. The diameter detection component 19 includes two bent plates 191 and two small electric push rods 192. The two bent plates 191 are symmetrically fixedly connected to the outer walls on both sides of the mounting cylinder 8. The two small electric push rods 192 are fixedly connected to the two bent plates 191 respectively. The moving ends of the two small electric push rods 192 are fixedly connected to the rollers 20 through pressure sensors. The rod walls of the moving ends of the two small electric push rods 192 are connected to the cross plate 21. The lower side wall of the upper cross plate 21 is fixedly connected to the conductive frame 22. The conductive frame 22 is electrically connected to the external power supply. The conductive frame 22 is electrically connected to the external power supply. The upper side wall of the plate 21 is fixedly connected with a third resistor plate 23, the upper end of the third resistor plate 23 is electrically connected to the display screen 5 through the PLC controller 4, and can detect the diameter of the shaft rod 6 to be measured. The roundness detection component 24 includes a rotating cylinder 241 and a micro electric push rod 242, the rotating cylinder 241 is rotatably connected to the inner wall of the mounting cylinder 8 through a bearing, the micro electric push rod 242 is fixedly connected to the inner wall of the rotating cylinder 241, a roundness meter 25 is fixedly connected to the lower inner wall of the measuring box 2, the moving end of the micro electric push rod 242 is fixedly connected to a probe 26 electrically connected to the roundness meter 25 through a pressure sensor, and a driving motor 27 is fixedly connected to the upper side wall of the mounting cylinder 8, and the output end of the driving motor 27 is transmission-connected to the rotating cylinder 241 through a gear ring transmission assembly, and can detect the roundness of the shaft rod 6 to be measured;

[0035] The distance component 34 is connected to the right side of the mounting tube 8 and is used to measure the length of the shaft rod 6 to be measured. The distance component 34 includes a distance cylinder 341 and a movable plate 342. The distance cylinder 341 is fixedly connected to the upper side wall of the mounting tube 8 through a bracket. The movable plate 342 is slidably set in the distance cylinder 341 and is fixedly connected to the upper inner wall of the distance cylinder 341 through a spring. The lower side wall of the movable plate 342 is fixedly connected with a square rod 35. The lower end of the square rod 35 extends out of the distance cylinder 341 and is fixedly connected with a conical platform 36. The lower side wall of the conical platform 36 is provided with a groove, and a trigger switch 37 is fixedly connected in the groove. The trigger switch 37 is electrically connected to the PLC controller 4 and the display screen 5. The pressing part of the trigger switch 37 is connected with a hemispherical seat 38. The lower end of the hemispherical seat 38 extends out of the groove, which can detect the length of the shaft rod 6 to be measured.

[0036] A light board 28 is fixedly connected to the upper side wall of the measuring box 2, and a row of yellow lamp beads 29 and a row of red lamp beads 30 are connected to the front side wall of the light board 28. A plurality of trigger blocks 31 and trigger plates 32 are inlaid on the upper inner wall of the measuring box 2. The trigger plate 32 is located on the rear side of the trigger block 31. The trigger block 31 is electrically connected to the corresponding yellow lamp bead 29 through the PLC controller 4, and the trigger plate 32 is electrically connected to the corresponding red lamp bead 30 through the PLC controller 4. The front side wall of the fixed cylinder 131 is fixedly connected to two trigger seats 33 through a bracket, and the ends of the first resistor plate 16 and the second resistor plate 17 that are away from each other are both electrically connected to the trigger seat 33 on the front side, and the roundness meter 25 is electrically connected to the trigger seat 33 on the rear side. The yellow lamp beads 29 and the red lamp beads 30 can be used to prompt the specific locations where the roundness and straightness problems of the shaft rod 6 to be measured occur, so as to assist the operator in finding the problem area of ​​the shaft rod 6 to be measured and repair it later.

[0037] The rear inner wall of the measuring box 2 is fixedly connected to a porous box 39, the left side wall of the measuring box 2 is fixedly connected to an air pump 40 and a heating box 41, the air outlet of the air pump 40 is connected to the lower side wall of the heating box 41, a plurality of heating wires 42 are fixedly connected to the inner wall of the heating box 41, and the heating box 41 and the porous box 39 are fixedly connected with the same horizontal tube 43. After the initial inspection, the shaft rod 6 to be measured can be heated, so that the operator can detect the dimensional changes of the shaft rod 6 to be measured after heating.

[0038] The operating principle of the present invention is now described as follows: the shaft rod 6 to be measured is placed in the measuring box 2, and the left end of the shaft rod 6 to be measured is placed between the two electric clamps 10 on the left, and then the two electric clamps 10 on the left are controlled to work through the operation panel 3, and the left end of the shaft rod 6 to be measured is clamped by the two electric clamps 10 (a pressure sensor is provided inside the clamping end of the electric clamp 10, and after the pressure sensor detects that a certain squeezing force is generated between the electric clamp 10 and the shaft rod 6 to be measured, the electric clamp 10 will stop working), and then the operator controls the clamping electric push rod 91 on the left to work through the operation panel 3, so that the clamping electric push rod 91 on the left drives the shaft rod 6 to be measured to move upward to a set distance;

[0039] Next, the operator lifts the installation cylinder 8 upwards by hand, visually observes that the center of the installation cylinder 8 and the center of the shaft rod 6 to be measured are roughly in the same straight line (as long as the shaft rod 6 to be measured is in the middle of the two rollers 20, a certain error is allowed), and then another operator controls the linear motor 7 to work through the operation panel 3, so that the linear motor 7 drives the installation cylinder 8 and the rollers 20 on the upper and lower sides to move to the left together through the straightness detection component 13. When the rollers 20 on the upper and lower sides move to the upper and lower sides of the shaft rod 6 to be measured, the operator controls the linear motor 7 to stop working through the operation panel 3. Then, the operator releases the lifting installation cylinder 8 and the rollers 20 on the upper and lower sides to move to the upper and lower sides of the shaft rod 6 to be measured. The hand of the cylinder 8, the installation cylinder 8 will drive the upper roller 20 to contact the upper surface of the shaft rod 6 to be measured under the action of gravity, and control the small electric push rods 192 on the upper and lower sides to work through the operation panel 3, the upper small electric push rod 192 will squeeze the shaft rod 6 to be measured below through the upper roller 20, and the shaft rod 6 to be measured is fixed by the clamping assembly 9 on the left at this time, and an interaction force will be generated between the upper roller 20 and the shaft rod 6 to be measured. Under the action of the interaction force, the upper roller 20 will drive the installation cylinder 8, the lifting rod 18 and the lifting seat 14 to move upward together in the process of squeezing the shaft rod 6 to be measured. The lifting seat 14 will drive the moving cylinder 132 to move upward in the fixed cylinder 131 through the spring. When the lower roller 20 moves upward under the push of the small electric push rod 192 below and contacts the lower side wall of the shaft rod 6 to be measured, the installation cylinder 8 and the moving cylinder 132 will stop moving immediately under the push of the lower roller 20. When both the upper and lower rollers 20 contact the shaft rod 6 to be measured, they will stop moving, and the small electric push rods 192 on the upper and lower sides will continue to squeeze the roller 20. The small electric push rod 192 is connected to the roller 20 through a pressure sensor. When the roller 20 detects the pressure of the small electric push rod 192 on the roller 20, When the extrusion pressure reaches the set threshold, the pressure sensor will control the small electric push rod 192 to stop working through the PLC controller 4. Since the center point of the distance between the two rollers 20 and the center of the installation cylinder 8 and the rotating cylinder 241 are on the same straight line, and the two rollers 20 move at the same speed, when the two rollers 20 stop moving, the center of the shaft rod 6 to be measured and the center point of the distance between the two rollers 20 are at the same place, and the center of the shaft rod 6 to be measured and the center of the installation cylinder 8 and the rotating cylinder 241 are also on the same straight line. When the operator finds that the installation cylinder 8 stops, the positioning bolt can be manually rotated (the positioning bolt is at Figure 4As shown in the figure, the fixed cylinder 131 and the movable cylinder 132 are fixed together by the positioning bolts. Then, the operator transmits an electric signal to the PLC controller 4 through the operation panel 3. After receiving the electric signal, the PLC controller 4 first controls the conductive frame 22 to be connected to the external power supply for one second. Since the conductive frame 22 moves downward with the upper roller 20 and contacts the third resistor plate 23, the upper end of the third resistor plate 23 is electrically connected to the PLC controller 4. As the diameter of the shaft rod 6 to be measured decreases, the distance between the two rollers 20 will also decrease. The closer the contact position between the conductive frame 22 and the third resistor plate 23 is to the lower end of the third resistor plate 23, the greater the resistance of the third resistor plate 23 becomes. When the external power supply voltage remains unchanged, the smaller the current signal transmitted to the PLC controller 4 is. The PLC controller 4 converts the current signal into an analog digital signal through its own analog digital conversion module, and outputs the analog digital signal to the display screen 5. The data is displayed in a certain area of ​​the display screen 5. The data is the diameter of the shaft rod 6 to be measured. The operator can record the data on the display screen 5.

[0040] Then the PLC controller 4 will control the linear motor 7 to work, so that the linear motor 7 drives the straightness detection component 13, the mounting cylinder 8, the diameter detection component 19 and the distance component 34 to move to the left together, so that the right end of the shaft rod 6 to be measured passes through the mounting cylinder 8 and the rotating cylinder 241. When the linear motor 7 drives the conical table 36 to contact the shaft rod 6 to be measured, the right end of the shaft rod 6 to be measured will squeeze the left inclined surface of the conical table 36, so that the conical table 36, the square rod 35 and the movable plate 342 move upward together, so that the lower end surface of the conical table 36 contacts the upper surface of the shaft rod 6 to be measured. When the lower end surface of the conical table 36 slides on the upper surface of the shaft rod 6 to be measured, the hemispherical seat 38 contacts the shaft rod 6 to be measured, so that the hemispherical seat 38 moves upward and squeezes the trigger switch 3. 7, the trigger switch 37 will transmit a continuous electrical signal to the PLC controller 4 and record it as a. When the PLC controller 4 receives the electrical signal a, the PLC controller 4 will immediately control the micro electric push rod 242 to work, and the micro electric push rod 242 drives the probe 26 to contact the shaft rod 6 to be measured. When the probe 26 and the shaft rod 6 to be measured are in contact, the pressure sensor arranged between the probe 26 and the micro electric push rod 242 will detect the pressure signal, so that the micro electric push rod 242 is controlled by the PLC controller 4 to stop working immediately, so that the probe 26 and the shaft rod 6 to be measured are in contact. Then the PLC controller 4 controls the drive motor 27 to work, and the drive motor 27 drives the rotating cylinder 241 to rotate through the gear ring transmission assembly. The rotating cylinder 241 drives the micro electric push rod 242 and the probe 26 to rotate on the surface of the shaft rod 6 to be measured, and the roundness meter 25 will detect the roundness of the shaft rod 6 to be measured through the probe 26 (the probe 26 adopts a precise mechanical structure, which is an existing mature technology and is not described in detail in this article, so that it can stably contact with the surface of the shaft rod 6 to be measured. When the probe 26 contacts the surface of the shaft rod 6 to be measured, the shape change of the surface of the shaft rod 6 to be measured will cause a small displacement of the probe 26. The displacement sensor inside the probe 26 can convert the small displacement of the probe 26 into an electrical signal output. During the rotation process, the probe 26 will continuously collect the shape data of the surface of the shaft rod 6 to be measured, and transmit the data to the data acquisition system inside the roundness meter 25 for measurement. Storage and processing. After data collection is completed, the processor of the roundness meter 25 analyzes and processes the collected data, calculates the parameter of the roundness error of the shaft rod 6 to be measured, and displays this parameter through a certain area of ​​the display screen 5). When the roundness meter 25 detects that the roundness of the shaft rod 6 to be measured has an error, the roundness meter 25 will control the trigger seat 33 on the rear side to be powered on for 0.5 seconds through the PLC controller 4. The trigger seat 33 on the rear side will contact the trigger plate 32 at different positions during the movement. The trigger plate 32 on the rear side lights up through the PLC controller 4 and the red light bead 30 at the corresponding position. The operator can determine the position of the roundness error of the shaft rod 6 to be measured by judging the position of the red light bead 30, which is convenient for the operator to perform subsequent maintenance;

[0041] When the two rollers 20 move to the position where the straightness of the surface of the shaft rod 6 to be tested has problems, the shaft rod 6 to be tested will have a slight bending deformation at that position. After the rollers 20 move to the deformation area, the rollers 20 will move a certain distance up or down along with the deformation position, and the rotating tube will drive the installation tube 8 and the lifting rod 18 to move through the bending plate 191. The lifting rod 18 will drive the lifting seat 14 and the conductive cone 15 to move a certain distance up or down (the moving distance is related to the deformation degree of the shaft rod 6 to be tested), so that the conductive cone 15 is in contact with the first resistor plate 16 or the second resistor plate 17, the conductive cone 15 is electrically connected to the external power supply, and the ends of the first resistor plate 16 and the second resistor plate 17 that are away from each other are electrically connected to the PLC controller 4. When the conductive cone 15 and the first resistor plate 16 or the second resistor plate 1 7, a current signal will be transmitted to the PLC controller 4, and the more serious the deformation area of ​​the shaft rod 6 to be tested is, the more the conductive cone 15 will contact the end of the first resistor plate 16 or the second resistor plate 17 that is far away from each other, so that the resistance becomes smaller. When the external voltage remains unchanged, the larger the current signal transmitted to the PLC controller 4 is, the PLC controller 4 will first control the trigger seat 33 on the front side to be energized for 0.5 seconds after receiving the current signal, and the trigger seat 33 on the front side will contact the trigger block 31 at the corresponding position, and the trigger block 31 will control the yellow light bead 29 at the corresponding position to light up through the PLC controller 4, reminding the operator of the area where the straightness of the shaft rod 6 to be tested is defective, so as to facilitate the operator to perform subsequent repairs (the shaft rod 6 to be tested can be rotated later to detect the straightness at different positions);

[0042] When the linear motor 7 drives the laser generator 12 to move to the left through the fixed cylinder 131, the laser signal emitted by the laser generator 12 will be detected by the laser receiver 11. After the laser receiver 11 detects the laser signal, the laser receiver 11 will transmit an electrical signal to the PLC controller 4. After receiving the electrical signal, the PLC controller 4 will indicate that each detection component has been moved away from above the right clamping assembly 9. When the linear motor 7 drives each detection component to move to the left, the PLC controller 4 will control the clamping electric push rod 91 on the right to move upward to the set position, and control the two electric clamps 10 on the right to work, and use the two electric clamps 10 on the right to clamp the shaft rod 6 to be measured. At the same time, the PLC controller 4 controls the two electric clamps 10 on the left to separate, and controls the clamping electric push rod 91 on the left to drive the two electric clamps 10 on the left to move downward to the set position, so as to avoid obstruction to the detection of the shaft rod 6 to be measured.

[0043] When the linear motor 7 drives each detection component to separate from the left end of the shaft rod 6 to be tested, the hemispherical seat 38 will also separate from the left end of the shaft rod 6 to be tested. At this time, the electric signal a continuously transmitted to the PLC controller 4 will be disconnected. The PLC controller 4 will record the time taken to receive the electric signal a and disconnect the electric signal a through an internal timer, and the moving speed of the linear motor 7 has been recorded by the PLC controller 4. The time and the moving speed are analyzed and calculated by the program set inside the PLC controller 4, and the calculated data is converted into a digital signal through the internal conversion module, and the electric signal is transmitted to a certain area of ​​the display screen 5 through the transmission module for display, so that the length of the shaft rod 6 to be tested can be displayed;

[0044] At this time, the measurement of the size of the shaft rod 6 to be measured is carried out at room temperature. After the measurement at room temperature is completed, the operator can repeat the above measurement steps, and before measuring, the measuring box 2 is closed, and the air pump 40 and the heating wire 42 are controlled to work for the set time to heat the shaft rod 6 to be measured, and then the size of the shaft rod 6 to be measured at high temperature is measured. The operator can analyze the thermal expansion coefficient of the shaft rod 6 to be measured based on the sizes at two temperatures, which is used to assist the operator in judging the stability of the shaft rod 6 to be measured at high temperature.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary device for measuring shaft parameters, comprising a support frame (1) and a measuring box (2) arranged on the upper side wall of the support frame (1), wherein a protective door is hingedly connected to the front side of the measuring box (2), and an operating panel (3), a PLC controller (4) and a display screen (5) are fixedly connected to the right side wall of the measuring box (2), characterized in that: Also includes: Two clamping assemblies (9) are located on the lower inner wall of the measuring box (2) and are used to clamp and fix the shaft rod (6) to be measured; A linear motor (7) is fixedly connected to the upper inner wall of the measuring box (2); a movable end of the linear motor (7) is connected to a mounting cylinder (8) via a straightness detection component (13); a diameter detection component (19) is provided on the left side of the mounting cylinder (8); and a roundness detection component (24) is provided on the right side of the mounting cylinder (8); The distance measuring component (34) is connected to the right side of the mounting tube (8) and is used to measure the length of the shaft rod (6) to be measured. The clamping component (9) includes a clamping electric push rod (91) and a lifting plate (92). The clamping electric push rod (91) is fixedly connected to the lower inner wall of the measuring box (2). The moving end of the clamping electric push rod (91) is fixedly connected to the lifting plate (92). The upper side wall of the lifting plate (92) is fixedly connected to two electric clamping claws (10). The rear inner wall of the measuring box (2) is fixedly connected to a laser receiver (11). The laser receiver (11) is electrically connected to the clamping electric push rod (91) and the electric clamping claw (10) through a PLC controller (4). The linear motor (7) is connected to the linearity detection component (7) through a straightness detection component (7). The component (13) is connected to a laser generator (12), the straightness detection component (13) comprises a fixed cylinder (131) and a movable cylinder (132), the laser generator (12) is fixedly connected to the left side wall of the fixed cylinder (131), the upper end of the fixed cylinder (131) is fixedly connected to the movable end of the linear motor (7), the movable cylinder (132) is inserted into the lower opening of the fixed cylinder (131), and is fixedly connected to the fixed cylinder (131) via a positioning bolt, the upper inner wall of the movable cylinder (132) is fixedly connected to a lifting seat (14) via a spring, the left side wall of the lifting seat (14) is fixedly connected to a conductive cone (15), the conductive cone (15) is electrically connected to an external power supply, and the movable cylinder (132) is fixedly connected to the left side wall of the movable cylinder (132). A first resistor plate (16) and a second resistor plate (17) are inlaid on the left inner wall, and the ends of the first resistor plate (16) and the second resistor plate (17) that are away from each other are electrically connected through a PLC controller (4) and a display screen (5). A lifting rod (18) is fixedly connected to the lower side wall of the lifting seat (14), and the lower end of the lifting rod (18) extends out of the moving cylinder (132) and is fixedly connected to the mounting cylinder (8). The diameter detection component (19) includes two bent plates (191) and two small electric push rods (192). The two bent plates (191) are symmetrically fixedly connected to the outer walls of both sides of the mounting cylinder (8), and the two small electric push rods (192) are respectively fixedly connected to the two bent plates (191). The movable ends of the small electric push rods (192) are fixedly connected to rollers (20) via pressure sensors; the rod walls of the movable ends of the two small electric push rods (192) are connected to transverse plates (21); the lower side wall of the transverse plate (21) located on the upper side is fixedly connected to a conductive frame (22); the conductive frame (22) is electrically connected to an external power supply; the upper side wall of the transverse plate (21) located on the lower side is fixedly connected to a third resistor plate (23); the upper end of the third resistor plate (23) is electrically connected to a display screen (5) via a PLC controller (4); the roundness detection component (24) comprises a rotating cylinder (241) and a micro electric push rod (242); the rotating cylinder (241) is rotatably connected to the inner wall of the mounting cylinder (8) via a bearing;The micro electric push rod (242) is fixedly connected to the inner wall of the rotating cylinder (241); a roundness meter (25) is fixedly connected to the lower inner wall of the measuring box (2); a moving end of the micro electric push rod (242) is fixedly connected to a probe (26) electrically connected to the roundness meter (25) via a pressure sensor; a driving motor (27) is fixedly connected to the upper wall of the mounting cylinder (8); and an output end of the driving motor (27) is drivingly connected to the rotating cylinder (241) via a gear ring transmission assembly.

2. An auxiliary device for measuring shaft parameters according to claim 1, characterized in that: The upper side wall of the measuring box (2) is fixedly connected to a light board (28), and the front side wall of the light board (28) is connected to a row of yellow light beads (29) and a row of red light beads (30). The upper inner wall of the measuring box (2) is inlaid with a plurality of trigger blocks (31) and trigger plates (32), and the trigger plates (32) are located at the rear side of the trigger blocks (31). The trigger blocks (31) are electrically connected to the corresponding yellow light beads (29) through a PLC controller (4), and the trigger plates (32) are electrically connected to the corresponding red light beads (30) through the PLC controller (4). The front side wall of the fixed cylinder (131) is fixedly connected to two trigger seats (33) through a bracket, and the ends of the first resistor plate (16) and the second resistor plate (17) that are away from each other are both electrically connected to the trigger seat (33) on the front side, and the roundness meter (25) is electrically connected to the trigger seat (33) on the rear side.

3. The auxiliary device for measuring shaft parameters according to claim 1, characterized in that: The distance component (34) comprises a distance cylinder (341) and a movable plate (342), wherein the distance cylinder (341) is fixedly connected to the upper side wall of the mounting cylinder (8) via a bracket, and the movable plate (342) is slidably arranged in the distance cylinder (341) and is fixedly connected to the upper inner wall of the distance cylinder (341) via a spring, and the lower side wall of the movable plate (342) is fixedly connected to a square rod (35), the lower end of the square rod (35) protrudes out of the distance cylinder (341) and is fixedly connected to a conical platform (36), the lower side wall of the conical platform (36) is provided with a groove, and a trigger switch (37) is fixedly connected in the groove, and the trigger switch (37) is electrically connected to the display screen (5) via a PLC controller (4), and the pressing portion of the trigger switch (37) is connected to a hemispherical seat (38), and the lower end of the hemispherical seat (38) protrudes out of the groove.

4. The auxiliary device for measuring shaft parameters according to claim 1, characterized in that: The rear inner wall of the measuring box (2) is fixedly connected to a porous box (39), the left side wall of the measuring box (2) is fixedly connected to an air pump (40) and a heating box (41), the air outlet of the air pump (40) is connected to the lower side wall of the heating box (41), the inner wall of the heating box (41) is fixedly connected to a plurality of heating wires (42), and the heating box (41) and the porous box (39) are fixedly connected to each other via a common horizontal pipe (43).

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