Calibrating device for pore-forming and grooving quality detector
By providing a calibration device for aperture umbrella measuring probe, aperture and slot width ultrasonic measuring probe and verticality measuring probe, the problem of inconvenient calibration of detectors in the prior art is solved, portable and efficient calibration is achieved, and the measurement accuracy and repeatability of the detectors are improved.
Patent Information
- Application Number
- CN202422168674.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-04
AI Technical Summary
The existing hole-forming and groove-forming quality detectors lack portable special calibration devices, which makes the calibration process of hole diameter, groove width and verticality cumbersome and difficult to achieve repeatable measurements, especially when calibrating on the door.
It provides a verification device including an umbrella measuring probe of aperture, an ultrasonic measuring probe of aperture and groove width and a verticality measuring probe, and uses a central fixing plate, legs, ultrasonic reflector plate, angle adjustment plate and fixture to realize portable calibration.
It realizes portable aperture, groove width and verticality calibration, suitable for on-site and laboratory calibration, improving the measurement accuracy and repeatability of the detector.
Smart Images
Figure CN223138616U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a verification device for measuring instruments, in particular to a verification device for a probe of a verification device for a pore-forming and groove-forming quality detector, belonging to the field of verification and calibration of measuring instruments. Background Technique
[0002] The construction quality of bored cast-in-place piles and diaphragm walls is an important technical link in the quality control of construction projects, and the construction quality is evaluated by detecting the aperture size after the formation of bored cast-in-place piles, the groove width after the formation of diaphragm walls, and the verticality.
[0003] Mechanical pore-forming quality detectors and ultrasonic pore-forming and groove-forming quality detectors are two special detection instruments widely used in the construction quality detection of bored cast-in-place piles and diaphragm walls in industries such as water transportation projects, railways, bridges, and water conservancy. The pore-forming and groove-forming quality detector is mainly used to measure the pore diameter, groove width, and verticality after construction. Therefore, the measurement accuracy of the pore diameter, groove width, and verticality is the main technical parameter of the detector. The user unit must regularly send the detector to the metrological calibration department for the quantity traceability of the pore diameter, groove width, and verticality of the detector to ensure the accuracy of its measurement.
[0004] The mechanical pore-forming quality detector consists of an aperture umbrella-shaped measurement probe, a verticality measurement probe, a measuring instrument, and an auxiliary winch for lifting the probe (see Figure 1 ). The aperture umbrella-shaped measurement probe is formed by four round rod measurement arms evenly distributed in a circle to form a similar umbrella-shaped frame. During measurement, the four measurement arms are closely attached to the measured hole wall, and the distance between the two measurement arms on the same straight line is the measured aperture of the corresponding cross-section. The verticality measurement probe is a cylindrical straight rod with an inclination measurement device inside, and the angle between the axis of the straight rod and the gravity plumb line is the verticality.
[0005] The ultrasonic pore-forming and groove-forming quality detector consists of an ultrasonic measurement probe for aperture and groove width, a measuring instrument, and an auxiliary winch for lifting the probe (see Figure 2 ). The ultrasonic measurement probe for aperture and groove width is in the shape of a cuboid with a square cross-section, and an ultrasonic transmitting / receiving sensor is designed on each of the four side surfaces of the cuboid. By transmitting ultrasonic waves with a specific frequency through the sensor and receiving the ultrasonic waves reflected from the measured hole wall or groove wall, the delay time of transmission and reception is measured to determine the aperture of the measured hole or the groove width of the formed groove.
[0006] At present, when calibrating the aperture and groove width of these two types of detectors, the calibration standard value often adopts the method of temporarily fixing the mechanical measuring arm or the position of the ultrasonic reflecting surface manually, and then using a ruler for measurement. Since there is no special calibration device, the process is not only troublesome, but more importantly, repetitive measurement cannot be achieved. The perpendicularity calibration must be carried out on a fixed turntable in the laboratory, and it is not easy to implement on-site calibration due to inconvenient movement. In view of the current situation, developing a special calibration device that is easy to carry and use and suitable for calibrating the aperture, groove width, and perpendicularity of these two types of detectors has practical application value and significance for carrying out on-site calibration or laboratory calibration. Summary of the Utility Model
[0007] To solve the problems mentioned in the background art, the first object of the present utility model is to provide an inspection device for an aperture umbrella-shaped measuring probe.
[0008] The inspection device for the aperture umbrella-shaped measuring probe includes a central fixing plate and four legs. A circular hole is formed in the middle of the central fixing plate. Four pairs of upper ear plates are fixedly connected to the edge of the central fixing plate. The four pairs of upper ear plates are evenly arranged circumferentially around the circular hole. The first ends in the length direction of the four legs are respectively hinged in the four pairs of upper ear plates. A plurality of semi-deep circular holes are arranged on the surface of the leg at fixed intervals along its own length direction. Scale lines are arranged on the surface of the leg at the position tangent to the outer arc of each semi-deep circular hole. When the leg is parallel to the central fixing plate, the axis of the semi-deep circular hole is parallel to the axis of the circular hole.
[0009] The second object of the present utility model is to provide an inspection device for an ultrasonic measuring probe for aperture and groove width.
[0010] The inspection device for the ultrasonic measuring probe for aperture and groove width includes the inspection device for the aperture umbrella-shaped measuring probe, and further includes four ultrasonic reflecting plates. Grooves matching the cross-sectional shape of the leg are formed at the edges of the ultrasonic reflecting plates. The leg can be embedded in the grooves. When the leg is embedded in the groove, the ultrasonic reflecting plate is perpendicular to the leg.
[0011] The third object of the present utility model is to provide an inspection device for a perpendicularity measuring probe.
[0012] The verticality measuring probe calibration device includes the aperture umbrella-shaped measuring probe calibration device, and also includes an angle adjustment plate, a nut seat, a screw and a clamp. The angle adjustment plate is arranged below the central fixing plate. A lower circular hole is opened in the middle of the angle adjustment plate. The nut seat is detachably mounted on the angle adjustment plate and corresponds to the lower circular hole. The screw is rotatably mounted in the upper circular hole. The screw passes through the lower circular hole and is threadedly connected to the nut seat. The support leg is slidably connected to the edge of the angle adjustment plate. A plurality of clamps are installed on the support leg at intervals along its length direction. The clamp is used to clamp the verticality probe and make the verticality probe parallel to the support leg.
[0013] Furthermore, it also includes a screw rotating device, which is installed on the top of the central fixed plate and is transmission-connected to the screw.
[0014] Furthermore, four pairs of lower ear plates are connected to the edge of the angle adjustment plate, and the four legs are slidably arranged in the four pairs of lower ear plates respectively. A sliding groove is provided on the side of the leg close to the lower ear plate, and the sliding groove extends along the length direction of the leg. A pin rod is detachably connected in the lower ear plate and the pin rod is slidably connected in the sliding groove.
[0015] Furthermore, two mounting surfaces are provided at intervals along the long sides of the legs on the upper sides of the sides of the legs facing away from the screw rod, and one of the clamps is detachably mounted on each of the mounting surfaces.
[0016] Furthermore, the clamp includes two V-shaped clips, which are connected to each other by bolts and nuts to form a ring shape, a plurality of through holes are opened at the bottom of the V-shaped clip, screw holes are opened on the mounting surface, and the bottom of the V-shaped clip is fixed to the mounting surface by screws.
[0017] The beneficial effects of the utility model are as follows: the three calibration devices provided by the utility model can respectively calibrate the aperture umbrella measuring probe, aperture and slot width ultrasonic measuring probe and verticality measuring probe of the hole and slot quality detector. The three calibration devices share a set of parts and are easy to carry. They have practical application value and significance for on-site calibration or laboratory calibration. The specific calibration method will be described in detail in the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of a mechanical hole quality detector in the background technology;
[0019] Figure 2 It is a schematic diagram of an ultrasonic hole forming quality detector in the background technology;
[0020] Figure 3 It is a schematic diagram of the aperture umbrella-shaped measuring probe calibration device;
[0021] Figure 4 It is a schematic diagram of a verification device for an ultrasonic measurement probe of aperture and slot width;
[0022] Figure 5 It is a schematic diagram of the connection between the support leg and the ultrasonic reflector;
[0023] Figure 6 It is a schematic diagram of a verification device for a perpendicularity measurement probe.
[0024] Explanation of the drawing reference numbers: 1. Central fixing plate, 11. Upper round hole, 12. Upper ear plate, 2. Support leg, 21. Half-depth round hole, 22. Scale line, 23. Slide groove, 24. Mounting surface, 241. Screw hole, 3. Ultrasonic reflector, 31. Embedded groove, 4. Angle adjustment plate, 41. Lower round hole, 42. Lower ear plate, 5. Nut seat, 6. Lead screw, 7. Lead screw rotating device, 8. Clamp, 9. Pin rod, A. Aperture umbrella-shaped measurement probe, B. Ultrasonic measurement probe for aperture and slot width, C. Perpendicularity measurement probe. Specific implementation manners
[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in 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 belong to the protection scope of the present invention.
[0026] Embodiment 1
[0027] Refer to Figure 3 , the verification device for the aperture umbrella-shaped measurement probe includes a central fixing plate 1 and four support legs 2. The central fixing plate 1 is in a cross shape. An upper round hole 11 is opened in the middle of the central fixing plate 1. A pair of upper ear plates 12 are respectively connected to the ends of the four arms of the central fixing plate 1. The four pairs of upper ear plates 12 are evenly arranged circumferentially around the upper round hole 11. The first ends of the four support legs 2 in the length direction are respectively hinged in the four pairs of ear plates. The cross-section of the support leg 2 perpendicular to its own long side is rectangular. A plurality of half-depth round holes 21 are arranged on the surface of the support leg 2 at fixed intervals along its own length direction. Scale lines 22 are arranged on the surface of the support leg 2 at the tangential position of the outer arc of each half-depth round hole 21. When the support leg 2 is parallel to the central fixing plate 1, the axis of the half-depth round hole 21 is parallel to the axis of the upper round hole 11.
[0028] The principles of verification and calibration of the aperture umbrella-shaped measurement probe are as follows:
[0029] Insert the measuring arm of the aperture umbrella-shaped measuring probe A into one of the semi-depth circular holes 21 of the support leg 2. Read the distance between the top ends of the bottoms of the two measuring arms corresponding to the aperture umbrella-shaped measuring probe according to the scale line 22 on the support leg 2. This is the true distance. Then, check whether the distance measured between the two corresponding measuring arms by the aperture umbrella-shaped measuring probe A itself corresponds to the true distance, so as to determine whether the aperture umbrella-shaped measuring probe A is accurate. By changing the position of the aperture umbrella-shaped measuring probe A on the support leg 2, calibrate or verify the measurement accuracy of the detector for various apertures.
[0030] Reference Figure 4 、 Figure 5 For the verification device of the ultrasonic measuring probe for aperture and groove width, it includes the aperture umbrella-shaped measuring probe verification device shown in the first embodiment and four ultrasonic reflector plates 3. The ultrasonic reflector plates 3 are rectangular. An embedding groove 31 matching the cross-sectional shape of the support leg 2 is provided on one of the short sides of the ultrasonic reflector plate 3. The ultrasonic reflector plate 3 is installed on the support leg 2 through the embedding groove 31, and the support leg 2 is perpendicular to the ultrasonic reflector plate 3.
[0031] The verification and calibration principle of the ultrasonic measuring probe for aperture and groove width is as follows:
[0032] Place the ultrasonic reflector plate 3 on the support leg 2 and align its side facing the central fixing plate 1 with one of the scale lines 22. Read the distance between the two opposite ultrasonic reflector plates 3 according to the scale line 22. This is the true distance. Then, place the ultrasonic measuring probe B for aperture and groove width between the four ultrasonic reflector plates 3. Check whether the distance between the two opposite ultrasonic reflector plates 3 feedback by the ultrasonic measuring probe B for aperture and groove width corresponds to the true distance between the two ultrasonic reflector plates 3, so as to detect whether the ultrasonic measuring probe B for aperture and groove width is accurate. By changing the position of the ultrasonic reflector plate 3 on the support leg 2, calibrate or verify the measurement accuracy of the detector for various apertures (groove widths).
[0033] Reference Figure 6
[0034] The verticality measurement probe verification device includes the aperture umbrella-shaped measurement probe verification device shown in Embodiment 1, an angle adjustment plate 4, a nut seat 5, a lead screw 6, a lead screw 6 rotation device, and a clamp 8. The central fixing plate 1 and the angle adjustment plate 4 are arranged parallel to each other up and down, and both are in a cross shape. An upper round hole 11 is opened at the center of the central fixing plate 1, and a lower round hole 41 is opened at the center of the angle adjustment plate 4. The nut seat 5 is fixed to the bottom of the angle adjustment plate 4 by screws and corresponds to the lower round hole 41. The lead screw 6 is rotatably installed in the upper round hole 11, passes through the lower round hole 41, and is threadedly connected to the nut seat 5. The lead screw rotation device 7 uses a stepping motor, and the stepping motor is fixed to the top of the central fixing plate 1 by screws and the main shaft of the stepping motor is connected to the lead screw 6. A pair of lower ear plates 42 are respectively connected to the ends of the four arms of the angle adjustment plate 4, and the four legs 2 are respectively slidably arranged in the four pairs of lower ear plates 42. A chute 23 is opened on the side of the leg 2 close to the lower ear plate 42, and the chute 23 extends along the length direction of the leg 2. A pin rod 9 is threadedly connected in the lower ear plate 42 and the pin rod 9 is slidably connected in the chute 23. Two mounting surfaces 24 are arranged at intervals along the length direction on the side of the leg 2 facing away from the lead screw 6, and a clamp 8 is installed on each mounting surface 24. The verticality probe is installed in the two clamps 8 on one of the legs 2, and the verticality probe C is parallel to the leg 2. Preferably, screw holes 241 are opened on the mounting surface 24. The clamp 8 includes two V-shaped clamping pieces, and the two V-shaped clamping pieces are butted to form a ring through bolts and nuts, and one of the V-shaped clamping pieces is fixed to the mounting surface 24 by screws.
[0035] The principles of verification and calibration of the verticality measurement probe are as follows:
[0036] Drive the lead screw 6 to rotate by using the stepping motor, change the angle between the leg 2 and the axis of the lead screw 6, turn on the verticality probe C, and check whether the angle displayed by the probe is consistent with the angle between the leg 2 and the axis of the lead screw 6. Among them, in addition to using a stepping motor, the lead screw rotation device 7 can also be realized by using a servo motor or a rotary handle. The angle between the leg 2 and the axis of the lead screw 6 can be measured by an inclination sensor or determined by the following method:
[0037] The distance between the central fixing plate 1 and the angle adjustment plate 4 is H, the distance from the axis of the upper round hole 11 to the hinge axis of the leg 2 is d, the distance from the axis of the lower round hole 41 to the axis of the pin rod 9 is D, and the angle between the leg 2 and the axis of the lead screw 6 is α. The following formula is used for calculation:
[0038]
[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. All any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An aperture umbrella-shaped measurement probe calibration device, characterized in that, It includes a central fixing plate and four legs. A circular upper hole is formed in the middle of the central fixing plate. Four pairs of upper ear plates are fixedly connected to the edge of the central fixing plate. The four pairs of upper ear plates are evenly arranged circumferentially around the upper hole. The first ends in the length direction of the four legs are respectively hinged in the four pairs of upper ear plates. A number of semi-deep circular holes are arranged on the surface of the leg at fixed intervals along its own length direction. Scale lines are arranged at the positions where the outer arcs of each semi-deep circular hole are tangent to the surface of the leg. When the leg is parallel to the central fixing plate, the axis of the semi-deep circular hole is parallel to the axis of the upper hole.
2. An ultrasonic measurement probe verification device for aperture and groove width, characterized in that, It includes the aperture umbrella-shaped measuring probe verification device as described in Claim 1, and further includes four ultrasonic reflector plates. An embedding groove matching the cross-sectional shape of the leg is formed at the edge of the ultrasonic reflector plate. The leg can be embedded in the embedding groove. When the leg is embedded in the embedding groove, the ultrasonic reflector plate is perpendicular to the leg.
3. A verticality measurement probe calibration device, characterized in that It includes the aperture umbrella-shaped measuring probe verification device as described in Claim 1, and further includes an angle adjustment plate, a nut seat, a lead screw and a clamp. The angle adjustment plate is arranged below the central fixing plate. A circular lower hole is formed in the middle of the angle adjustment plate. The nut seat is detachably installed on the angle adjustment plate and corresponds to the lower hole. The lead screw is rotatably installed in the upper hole. The lead screw passes through the lower hole and is in threaded connection with the nut seat. The leg is slidably connected to the edge of the angle adjustment plate. A number of clamps are installed at intervals along the length direction of the leg. The clamp is used for clamping the perpendicularity probe and making the perpendicularity probe parallel to the leg.
4. The verticality measurement probe calibration device according to claim 3, characterized in that, It further includes a lead screw rotation device, and the lead screw rotation device is installed on the top of the central fixing plate and is in transmission connection with the lead screw.
5. A verticality measurement probe calibration device according to claim 3, characterized in that, Four pairs of lower ear plates are connected to the edge of the angle adjustment plate. The four legs are respectively slidably arranged in the four pairs of lower ear plates. A chute is formed on the side surface of the leg close to the lower ear plate. The chute extends along the length direction of the leg. A pin rod is detachably connected in the lower ear plate and the pin rod is slidably connected in the chute.
6. The verticality measurement probe verification device according to claim 3, characterized in that, Two mounting surfaces are arranged at intervals along the long side of the leg on the side surface of the leg away from the lead screw. Each mounting surface is detachably installed with one clamp.
7. A verticality measurement probe calibration device according to claim 6, characterized in that, The clamp includes two V-shaped clamping pieces. The two V-shaped clamping pieces are butted to form a ring through bolts and nuts. A number of through holes are formed at the bottom of the V-shaped clamping piece. A screw hole is formed on the mounting surface. The bottom of the V-shaped clamping piece is fixed on the mounting surface by screws.