A calibration device for measuring steel bar protective layer
By setting up a sleeve on the outside of the measuring head of the steel bar protective layer measuring instrument and using the design of rollers and return springs, the problem of accelerating wear due to tight fit with the concrete surface during the measurement process is solved, and the effect of reducing wear and improving flexibility is achieved.
Patent Information
- Application Number
- CN202421575625.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-07-05
AI Technical Summary
When measuring, the existing reinforcement protective layer measuring instrument needs to place the measuring head above the concrete protective layer and move horizontally, causing the force of the pressing measuring head to make it closely fit with the concrete surface, thereby accelerating the wear of the measuring head.
A calibrator calibration device for steel bar protective layer measuring instrument is designed. By setting up a sleeve on the outside of the measurement head, and setting a plurality of rollers and return springs on the lower side of the sleeve, ensuring that the force of pressing the sleeve acts under the sleeve, so that the sleeve is closely fitted with the surface of the object to be measured, reducing wear of the measurement head.
By applying the pressing force under the sleeve, the force of the measuring head is reduced to the close fit between the concrete surface, effectively slowing down the wear of the measuring head, and improving the flexibility and installation convenience of the measuring head.
Smart Images
Figure CN222718910U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel bar measurement, in particular to a calibration device for a steel bar protective layer measurement instrument. Background Art
[0002] The steel bar protective layer measuring instrument is an instrument used to measure the thickness of the protective layer between the steel bars and concrete in reinforced concrete structures. This instrument usually realizes measurement through the principle of electromagnetic induction or ultrasonic technology. By accurately measuring the steel bar protective layer, the safety of the structure can be measured in time to ensure the stability and long-term use of the structure.
[0003] When measuring, the magnetic induction steel bar protection layer measuring instrument uses the induction principle to induce a signal at the steel bar, and then calculates the thickness of the protection layer. The ultrasonic steel bar protection layer measuring instrument uses an ultrasonic sensor to scan the concrete surface, irradiate the ultrasonic wave onto the steel bar, and calculates the thickness of the steel bar protection layer in the concrete based on the reflected signal.
[0004] In the prior art, since the steel bar protective layer measuring instrument needs to place the measuring head above the concrete protective layer and move the measuring head horizontally when measuring the steel bar, the force applied by pressing the measuring head will cause the measuring head to fit more closely with the concrete surface, thereby accelerating the wear of the measuring head. Summary of the invention
[0005] The purpose of the utility model is to provide a calibration device for a steel bar protective layer measuring instrument, which can make the force applied by pressing the measuring head act on the bottom of the shell, so that the shell fits tightly with the surface of the object to be measured, reducing the wear of the measuring head, so as to solve the problems raised in the above-mentioned background technology.
[0006] To achieve the above object, the utility model provides the following technical solutions: a calibration device for a steel bar protective layer measuring instrument, comprising a measuring instrument body and a measuring head connected by a wire, a calibration component is provided on the outer side of the measuring head, and the calibration component comprises a casing sleeved on the outer side of the measuring head;
[0007] A mounting groove is provided on the lower side of the shell, and the shell is sleeved on the outer side of the measuring head through the mounting groove. A plurality of movable grooves are provided on the inner lower side of the shell, and columns are slidably connected inside the plurality of movable grooves. A movable seat is fixedly connected to the bottom end of the column, and a roller is rotatably connected to the inner lower side of the movable seat. The movable seat is slidably connected in the movable groove, and a first return spring is fixedly connected to the upper side of the movable seat. The first return spring is sleeved on the outer side of the column, and the top end of the first return spring is fixedly connected to the inside of the movable groove. A locking assembly is provided inside the shell.
[0008] Preferably, the shape of the movable seat matches the shape of the lower portion of the movable slot, and the shape of the mounting slot matches the shape of the measuring head.
[0009] Preferably, the locking assembly includes two limit grooves opened on the outside of the column, and four movable grooves are opened inside the shell. The insides of the four movable grooves are all slidably connected to limit blocks, and the limit blocks are clamped in the limit grooves after movement.
[0010] Preferably, a second return spring is fixedly connected to a side of the limit block away from the column, and the other end of the second return spring is fixedly connected to a side of the movable groove away from the moving groove.
[0011] Preferably, a first magnetic block is fixedly connected to a side of the limit block away from the column, a plurality of guide grooves are opened on the inner upper side of the shell, a second magnetic block is slidably connected inside the plurality of guide grooves, and the plurality of first magnetic blocks are magnetically adsorbed to the plurality of second magnetic blocks respectively.
[0012] Preferably, a same pull plate is fixedly connected to the upper sides of two adjacent second magnetic blocks, and the pull plate is slidably connected in two guide grooves, and the pull plate is in a "U" shape.
[0013] Preferably, a docking component is provided inside the housing and outside the measuring head. The docking component includes two slide grooves provided on both sides of the installation groove. Slide blocks are slidably connected in the two slide grooves.
[0014] Preferably, the two sliding blocks are provided with inclined surfaces on one side close to the mounting groove, and the inclined surfaces inside the two sliding grooves are fixedly connected with magnetic plates, and the magnetic plates and the sliding blocks are magnetically adsorbed.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] 1. The height of the measuring head can be adjusted by pressing the cover, and the position of the measuring head can be locked. The multiple rollers under the cover can drive the measuring head to move linearly. Since the cover outside the measuring head can move linearly through the rollers, the measuring head can measure the object to be measured more smoothly. The rollers can only drive the cover to move linearly to avoid the dislocation of the measuring head during the movement. The force applied by pressing the measuring head will act on the bottom of the cover, so that the cover fits tightly with the surface of the object to be measured, reducing the wear of the measuring head.
[0017] 2. The sliders on both sides of the measuring head are adsorbed by the magnetic block, so that the measuring head is locked in the installation groove under the casing. Since the sliders on both sides of the measuring head will be adsorbed by the magnetic plate after they are completely inserted into the slide groove, the installation method of the casing and the measuring head is relatively convenient. After pulling the measuring head, the measuring head can also be quickly taken out of the installation groove, which improves the flexibility of the measuring head. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 This is the overall structural view of the utility model;
[0020] Figure 2 It is a schematic diagram of a half-section structure of the utility model;
[0021] Figure 3 It is a schematic diagram of a half-section structure of the casing of the utility model;
[0022] Figure 4 It is a half-section structural schematic diagram of the movable slot of the utility model;
[0023] Figure 5 It is a structural schematic diagram of the limit block of the utility model.
[0024] Description of reference numerals:
[0025] 1. Measuring instrument body; 2. Measuring head; 3. Calibration component; 31. Housing; 32. Mounting slot; 33. Moving slot; 34. Column; 35. First return spring; 36. Movable seat; 37. Roller; 38. Locking assembly; 381. Limiting slot; 382. Movable slot; 383. Limiting block; 384. Second return spring; 385. First magnetic block; 386. Second magnetic block; 387. Guide slot; 388. Pull plate; 4. Docking component; 41. Slide slot; 42. Sliding block; 43. Magnetic plate. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] The utility model provides a technical solution:
[0028] See also Figures 1 to 5A steel bar protective layer measuring instrument calibration device comprises a measuring instrument body 1 and a measuring head 2 connected by a wire, a calibration component 3 is arranged on the outer side of the measuring head 2, and the calibration component 3 comprises a casing 31 which is sleeved on the outer side of the measuring head 2;
[0029] A mounting groove 32 is provided on the lower side of the sleeve 31, and the sleeve 31 is sleeved on the outer side of the measuring head 2 through the mounting groove 32. A plurality of movable grooves 33 are provided on the inner lower side of the sleeve 31, and a column 34 is slidably connected to the inner sides of the plurality of movable grooves 33. A movable seat 36 is fixedly connected to the bottom end of the column 34, and a roller 37 is rotatably connected to the inner lower side of the movable seat 36. The movable seat 36 is slidably connected in the movable groove 33, and a first return spring 35 is fixedly connected to the upper side of the movable seat 36. The first return spring 35 is sleeved on the outer side of the column 34, and the top end of the first return spring 35 is fixedly connected to the inner side of the movable groove 33. A locking assembly 38 is provided inside the sleeve 31.
[0030] The shape of the movable seat 36 matches the shape of the lower portion of the movable groove 33 , and the shape of the mounting groove 32 matches the shape of the measuring head 2 .
[0031] The locking assembly 38 includes two limit slots 381 opened on the outside of the column 34, and four movable slots 382 are opened inside the housing 31. The insides of the four movable slots 382 are all slidably connected to the limit blocks 383, and the limit blocks 383 are clamped in the limit slots 381 after moving.
[0032] A second return spring 384 is fixedly connected to one side of the limit block 383 away from the column 34 , and the other end of the second return spring 384 is fixedly connected to one side of the movable groove 382 away from the moving groove 33 .
[0033] A first magnetic block 385 is fixedly connected to the side of the limit block 383 away from the column 34, and a plurality of guide grooves 387 are opened on the inner upper side of the sleeve shell 31. The interiors of the plurality of guide grooves 387 are all slidably connected to second magnetic blocks 386, and the plurality of first magnetic blocks 385 are magnetically adsorbed to the plurality of second magnetic blocks 386 respectively.
[0034] The upper sides of two adjacent second magnetic blocks 386 are fixedly connected with a same pull plate 388 , and the pull plate 388 is slidably connected in the two guide grooves 387 , and the pull plate 388 is in a “U” shape.
[0035] By adopting the above technical solution, first, after the measuring head 2 connected by the wire to the measuring instrument body 1 is inserted into the installation groove 32 below the sleeve 31, the sleeve 31 is placed above the object to be measured. At this time, the sleeve 31 is supported by multiple rollers 37. When measuring, the sleeve 31 is pressed downward, and the sleeve 31 and the measuring head 2 descend. At this time, the movable seat 36 outside the roller 37 and the column 34 above the movable seat 36 are both movable in the movable groove 33. When the inclined surface above the column 34 contacts the limit block 383 inside the movable groove 382, the limit block 383 will be pushed into the movable groove 382. When the sleeve 31 continues to drive the limit block 383 to move downward and move to the position corresponding to the limit groove 381 outside the column 34, the second return spring 384 inside the movable groove 382 will push the limit block 383 out of the movable groove 382 and enter. Inside the limit groove 381, the measuring head 2 will contact the object to be measured. At the same time, the first return spring 35 above the movable seat 36 always squeezes the movable seat 36, so that the limit groove 381 and the limit block 383 fit tightly, and the position of the shell 31 will also be locked. Then, the roller 37 is driven by the shell 31 to drive the shell 31 to move linearly. The data measured during the movement of the measuring head 2 will be displayed by the measuring instrument body 1. Since the shell 31 outside the measuring head 2 can move linearly through the roller 37, the measuring head 2 can measure the object to be measured more smoothly, and the roller 37 can only drive the shell 31 to move linearly, avoiding misalignment of the measuring head 2 during the movement. The force applied by pressing the measuring head 2 will act on the bottom of the shell 31, so that the shell 31 fits tightly with the surface of the object to be measured, reducing the wear of the measuring head 2.
[0036] Specifically, Figure 3 As shown, a docking component 4 is provided inside the housing 31 and outside the measuring head 2 . The docking component 4 includes two slide grooves 41 provided on both sides of the installation groove 32 . Slide blocks 42 are slidably connected in the two slide grooves 41 .
[0037] The two sliders 42 are provided with inclined surfaces on one side close to the mounting groove 32 , and the inclined surfaces inside the two slide grooves 41 are fixedly connected with magnetic plates 43 , and the magnetic plates 43 and the sliders 42 are magnetically adsorbed.
[0038] By adopting the above technical solution, firstly, during the process of inserting the measuring head 2 into the mounting groove 32 below the casing 31, the sliders 42 on both sides of the measuring head 2 will dock with the two slide grooves 41 inside the mounting groove 32. As the two sliders 42 slide inside the two slide grooves 41, when the inclined surfaces of the sliders 42 dock with the magnetic plates 43 fixed to the inclined surfaces inside the slide grooves 41, the sliders 42 will be adsorbed by the magnetic blocks, so that the measuring head 2 is locked inside the mounting groove 32. Since the sliders 42 on both sides of the measuring head 2 will be adsorbed by the magnetic plates 43 after completely entering the slide grooves 41, the installation method of the casing 31 and the measuring head 2 is relatively convenient. After pulling the measuring head 2, the measuring head 2 can also be quickly taken out from the mounting groove 32, thereby improving the flexibility of the measuring head 2.
[0039] Working principle: First, the measuring head 2 connected by the wire to the measuring instrument body 1 is installed under the casing 31 through the mounting groove 32, and the sliders 42 on both sides of the measuring head 2 will dock with the two slide grooves 41 inside the mounting groove 32. When the inclined surface of the slider 42 docks with the magnetic plate 43 fixed on the inclined surface inside the slide groove 41, the slider 42 will be attracted by the magnetic block, and then the measuring head 2 is driven to move linearly through multiple rollers 37. When the casing 31 is pressed down, the movable seat 36 outside the roller 37 and the column 34 above the movable seat 36 are both movable inside the movable groove 33, and It contacts the limit block 383, so that the limit block 383 is pushed into the movable groove 382. When the limit block 383 moves to the position corresponding to the limit groove 381 on the outer side of the column 34, the second return spring 384 inside the movable groove 382 will push the limit block 383 out of the movable groove 382 and enter the limit groove 381. At this time, the measuring head 2 will contact the object to be measured, and the first return spring 35 will always squeeze the movable seat 36, so that the position of the shell 31 will also be locked, and the data measured during the linear movement of the measuring head 2 will be displayed through the measuring instrument body 1.
[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A calibrating device for measuring steel bar protective layer, comprising a measuring instrument body (1) and a measuring head (2) connected by a wire, characterized in that: A calibration component (3) is provided on the outer side of the measuring head (2), and the calibration component (3) comprises a casing (31) which is sleeved on the outer side of the measuring head (2); The lower side of the sleeve (31) is provided with a mounting groove (32), and the sleeve (31) is sleeved on the outer side of the measuring head (2) through the mounting groove (32). The lower side of the inner part of the sleeve (31) is provided with a plurality of movable grooves (33), and the inner parts of the plurality of movable grooves (33) are all slidably connected with columns (34). The bottom end of the column (34) is fixedly connected with a movable seat (36), and the lower side of the inner part of the movable seat (36) is rotatably connected with a roller (37). The movable seat (36) is slidably connected in the movable groove (33), and the upper side of the movable seat (36) is fixedly connected with a first return spring (35), and the first return spring (35) is sleeved on the outer side of the column (34). The top end of the first return spring (35) is fixedly connected to the inner part of the movable groove (33). A locking assembly (38) is provided inside the sleeve (31).
2. A steel bar cover measuring instrument calibration device according to claim 1, characterized in that: The shape of the movable seat (36) matches the shape of the lower portion inside the movable groove (33), and the shape of the mounting groove (32) matches the shape of the measuring head (2).
3. The calibration device for a steel bar protective layer measuring instrument according to claim 1, characterized in that: The locking assembly (38) comprises two limit grooves (381) provided on the outside of the column (34); four movable grooves (382) are provided inside the housing (31); the insides of the four movable grooves (382) are all slidably connected to limit blocks (383); and the limit blocks (383) are engaged in the limit grooves (381) after movement.
4. A calibration device for a steel bar protective layer measuring instrument according to claim 3, characterized in that: A second return spring (384) is fixedly connected to the side of the limit block (383) away from the column (34), and the other end of the second return spring (384) is fixedly connected to the side of the movable groove (382) away from the moving groove (33).
5. A calibration device for a steel bar protective layer measuring instrument according to claim 4, characterized in that: A first magnetic block (385) is fixedly connected to the side of the limit block (383) away from the column (34), a plurality of guide grooves (387) are provided on the inner upper side of the sleeve (31), and a second magnetic block (386) is slidably connected inside the plurality of guide grooves (387), and the plurality of first magnetic blocks (385) are magnetically adsorbed to the plurality of second magnetic blocks (386) respectively.
6. A calibration device for a steel bar protective layer measuring instrument according to claim 5, characterized in that: The upper sides of two adjacent second magnetic blocks (386) are fixedly connected with a same pull plate (388), and the pull plate (388) is slidably connected in two guide grooves (387), and the pull plate (388) is in a "U" shape.
7. A calibration device for a steel bar protective layer measuring instrument according to claim 1, characterized in that: A docking component (4) is provided inside the housing (31) and outside the measuring head (2). The docking component (4) includes two slide grooves (41) provided on both sides of the installation groove (32). Slide blocks (42) are slidably connected in the two slide grooves (41).
8. A calibration device for a steel bar protective layer measuring instrument according to claim 7, characterized in that: The two sliders (42) are provided with an inclined surface on one side close to the mounting groove (32), and the inclined surfaces inside the two slide grooves (41) are fixedly connected with a magnetic plate (43), and the magnetic plate (43) and the slider (42) are magnetically adsorbed.