A tool for measuring the squareness of masonry

Abstract

The present invention relates to the field of construction measurement equipment, and specifically discloses a masonry squareness measuring tool, including a support frame, a positioning device and a laser alignment device; the support frame is provided with two positioning devices, the positioning device includes a guide rail seat, a slide seat and a positioning rod, the guide rail seat is rotatably connected to the support frame, and a positioning point is provided on the guide rail seat; the slide seat is slidably fitted in the guide rail seat, the positioning rod is connected to the slide seat, and the positioning rod extends along the length direction of the guide rail seat; the laser alignment device is provided at one end of the support frame, and the laser alignment device includes two horizontal laser beams a and laser beam b, and the laser beam a and the laser beam b are perpendicular to each other. The measuring tool is convenient to operate, has accurate detection results, saves labor costs and time costs in the actual measurement process, and can quickly detect squareness without multiple adjustments, thereby improving the actual measurement work efficiency.

Description

Technical Field

[0001] The invention relates to the field of building construction measurement equipment, and in particular to a masonry squareness measurement tool. Background Art

[0002] Major real estate companies are paying more and more attention to the process evaluation of projects under construction, among which actual measurement accounts for a large part. At present, the actual measurement tool for the squareness of masonry and plastering projects at construction sites uses infrared plus manual adjustment measurement methods. The measurement steps are: turn on the infrared measuring instrument → two measurement personnel adjust the infrared to make it parallel to the wall → use a tape measure to measure the distance between the infrared on the other side and the wall. The second step of this measurement method requires the cooperation of multiple people to complete, and the process of adjusting the infrared to be parallel to the wall is relatively time-consuming, which will greatly slow down the efficiency of actual measurement. This will waste too much manpower and time, which is seriously inconsistent with the current development needs of actual measurement at construction sites. Summary of the invention

[0003] In view of this, an object of the present invention is to overcome the defects in the prior art and provide a masonry squareness measuring tool.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A masonry squareness measuring tool, comprising a support frame, a positioning device and a laser alignment device; the support frame is provided with two positioning devices, the positioning device comprises a guide rail seat, a slide seat and a positioning lever, the guide rail seat is rotatably connected to the support frame, and a positioning point is provided on the guide rail seat; the slide seat is slidably fitted in the guide rail seat, the positioning lever is connected to the slide seat, and the positioning lever extends along the length direction of the guide rail seat;

[0006] The laser alignment device is arranged at one end of the support frame, and the laser alignment device includes two horizontal laser beams a and laser beam b. The laser beam a and the laser beam b are perpendicular to each other, and the laser beam a is transmitted along the length direction of the support frame. During measurement, the laser beam a coincides with the two positioning points, and the two positioning rods are perpendicular to the wall and have the same extension amount.

[0007] Furthermore, a slide groove is provided on the guide rail seat, and the slide seat slides in the slide groove; the slide seat includes a first slider, a fine-tuning mechanism and a second slider, the first slider and the second slider are respectively connected to the two ends of the fine-tuning mechanism, the positioning lever is arranged on the second slider, the positioning lever extends toward a side away from the first slider, and the fine-tuning mechanism is used to accurately fine-tune the feeding action of the positioning lever.

[0008] Furthermore, the fine-tuning mechanism includes a handwheel, a fine-tuning screw and a nut, a rotating shaft is coaxially provided on one side of the handwheel, and the rotating shaft is rotatably connected to the first slider; the fine-tuning screw is coaxially provided on the side of the handwheel away from the rotating shaft, the nut is fixed on the second slider, and the fine-tuning screw thread is engaged in the nut.

[0009] Furthermore, the guide rail seat is provided with a scale, and the second slider is provided with a marking line; limit blocks are provided at both ends of the slide groove, and a limit rod is provided on a side of the first slider facing the second slider.

[0010] Furthermore, the slide groove is a dovetail groove, and the first slider and the second slider are conformably fitted in the slide groove; a first fastening hole is opened on the first slider, and the first fastening hole has an internal thread fitted with a first locking screw, and one end of the first locking screw can be tightened against the bottom of the slide groove after passing through the first fastening hole.

[0011] Furthermore, a bracket for supporting the positioning lever is provided at one end of the guide rail seat, and the positioning lever is slidably fitted on the bracket.

[0012] Further, a steering column is provided at the bottom of the guide rail seat, and the steering column is rotatably connected to the support frame; the support frame is provided with a second fastening hole and a third fastening hole, and the guide rail seat is provided with a first support ear and a second support ear, the first support ear is threadedly matched with a second locking screw, and the second support ear is threadedly matched with a third locking screw;

[0013] When the second locking screw is locked in the second fastening hole, the positioning rod is parallel to the laser beam a, and when the third locking screw is locked in the third fastening hole, the positioning rod is perpendicular to the laser beam a.

[0014] Furthermore, the support frame includes two bases and two parallel sliding rods, each of the bases is provided with a guide rail seat, and the base is slidably matched on the two sliding rods;

[0015] The base is provided with a fourth fastening hole, the inner thread of the fourth fastening hole is matched with a fourth locking screw, and the fourth locking screw can be tightened on the sliding rod after passing through the fourth fastening hole.

[0016] Furthermore, it also includes a lifting bracket, which includes a support foot, a lifting screw and a support plate. The support foot is provided with a screw hole, the lifting screw is engaged in the screw hole along a vertical thread, the support plate is arranged at the top of the lifting screw, and the support is installed on the support plate.

[0017] The beneficial effects of the present invention are:

[0018] (1) The masonry squareness measuring tool of the present invention rotates the guide track seat so that the two positioning rods are vertically against the wall surface and extend to the same amount. At this time, the laser beam a coincides with the two positioning points. Then the distance of the laser beam b from the wall is measured, and multiple positions are measured and the data is recorded. Compared with traditional measurements, each measurement of this measuring tool can be completed independently by one surveyor, and when multiple squareness measurements are performed, there is no need to adjust the measuring tool multiple times, and it can be put into use after quick adjustment. This measuring tool is easy and convenient to operate, and the detection results are accurate. It saves the labor cost and time cost in the actual measurement process, and can quickly detect the squareness without multiple adjustments, thereby improving the efficiency of actual measurement work.

[0019] (2) By setting a fine-tuning mechanism between the first slider and the second slider, when the positioning rod is pushed toward the wall, it stops before the positioning rod touches the wall, and then the positioning rod is slowly pressed against the wall by adjusting the fine-tuning mechanism, thereby preventing the positioning rod from being pushed directly against the wall, causing the positioning rod to be deformed due to excessive force, thereby affecting the accuracy of detection.

[0020] (3) This measuring tool has a wide range of applications. The positioning rod is telescopic and adjustable. It can quickly detect the squareness of different positions and different bays according to the length of the wall and the detection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0022] Figure 1 It is a schematic diagram of the structure of a masonry squareness measuring tool of the present invention during measurement;

[0023] Figure 2 is a cross-sectional schematic diagram of a positioning device;

[0024] Figure 3 It is a schematic diagram of the structure of the measuring tool;

[0025] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0026] Figure 5 It is a structural schematic diagram of the lifting bracket.

[0027] Reference numerals:

[0028] 1-support frame, 11-second fastening hole, 12-base, 13-slide rod, 2-positioning device, 21-guide rail seat, 211-slide groove, 212-limit block, 213-limit rod, 214-steering column, 215-first ear, 216-second ear, 22-positioning push rod, 23-positioning point, 24-first slider, 25-fine-tuning mechanism, 251-handwheel, 252-fine-tuning screw, 253-nut, 254-rotating shaft, 26-second slider, 27-scale, 28-marking line, 29-bracket, 3-laser alignment device, 31-laser beam a, 32-laser beam b, 41-first locking screw, 42-second locking screw, 43-third locking screw, 44-fourth locking screw, 5-lifting bracket, 51-support foot, 52-lifting screw, 53-support plate. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the embodiments.

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] See also Figure 1 , is a masonry squareness measuring tool of the present invention, the measuring tool comprises a support frame 1, a positioning device 2 and a laser alignment device 3; two positioning devices 2 are arranged on the support frame 1, the positioning device 2 comprises a guide track seat 21, a slide seat and a positioning push rod 22, the guide track seat 21 is rotatably connected to the support frame 1, and a positioning point 23 is arranged on the guide track seat 21; the slide seat is slidably fitted in the guide track seat 21, the positioning push rod 22 is connected to the slide seat, and the positioning push rod 22 extends along the length direction of the guide track seat 21; the laser alignment device 3 is arranged at one end of the support frame 1, the laser alignment device 3 comprises two horizontal laser beams a31 and a laser beam b32, the laser beam a31 and the laser beam b32 are perpendicular to each other, and the laser beam a31 is transmitted along the length direction of the support frame 1; during measurement, the laser beam a31 coincides with the two positioning points 23, and the two positioning push rods 22 are perpendicular to the wall surface and have the same extension amount.

[0032] The masonry squareness measuring tool of the present invention has two positioning devices 2 on the support frame 1, and the positioning rods 22 of the positioning devices 2 are arranged horizontally, and the laser alignment device 3 includes two laser instruments. By rotating the two guide rail seats 21 respectively, the laser beam a31 is made to coincide with the two positioning points 23 at the same time, and then the slide seats in the guide rail seats 21 are slid respectively, so that the two positioning rods 22 are vertically abutted against the wall surface, and the two positioning rods 22 are controlled to extend the same amount relative to the guide rail seats 21, that is, the moving distances of the ends of the two positioning rods 22 abutting against the wall surface are the same, and at this time, the laser beam a31 is parallel to the wall surface. Since the laser beam a31 and the laser beam b32 are perpendicular to each other, the distance of the laser beam b32 from the wall is measured again, and multiple positions are measured (at least three positions are measured along the transmission direction of the laser beam b32), and the data is recorded, so as to measure the squareness of the masonry.

[0033] Compared with traditional measurement, this measuring tool can be completed independently by one person at a time, and when multiple squareness measurements are performed, there is no need to adjust the measuring tool multiple times, and it can be put into use after quick adjustment. This measuring tool is easy to operate, has accurate test results, saves labor costs and time costs in the actual measurement process, and can quickly detect squareness without multiple adjustments, thus improving the efficiency of actual measurement work.

[0034] Specifically, see Figure 2 and Figure 4 A slide groove 211 is provided on the guide rail seat 21, and the slide seat slides in the slide groove 211; the slide seat includes a first slider 24, a fine-tuning mechanism 25 and a second slider 26, the first slider 24 and the second slider 26 are respectively connected to the two ends of the fine-tuning mechanism 25, the positioning rod 22 is arranged on the second slider 26, and the positioning rod 22 extends toward a side away from the first slider 24, and the fine-tuning mechanism 25 is used to accurately fine-tune the feeding action of the positioning rod 22.

[0035] In this embodiment, a fine-tuning mechanism 25 is provided between the first slider 24 and the second slider 26. When the positioning rod 22 is pushed toward the wall, the positioning rod 22 stops before it contacts the wall. At this time, there is still a gap between the end of the positioning rod 22 and the wall. The fine-tuning mechanism 25 is adjusted to make the positioning rod 22 slowly contact the wall, thereby preventing the positioning rod 22 from being pushed directly against the wall, causing the positioning rod 22 to be deformed due to excessive force, thereby affecting the accuracy of detection.

[0036] In a specific embodiment, the fine-tuning mechanism 25 includes a handwheel 251, a fine-tuning screw 252 and a nut 253. A rotating shaft 254 is coaxially provided on one side of the handwheel 251, and the rotating shaft 254 is rotatably connected to the first slider 24; the fine-tuning screw 252 is coaxially provided on the side of the handwheel 251 away from the rotating shaft 254, the nut 253 is fixed on the second slider 26, and the fine-tuning screw 252 is threadedly engaged in the nut 253.

[0037] A bearing is provided on the first slider 24, and the rotating shaft 254 is fixed in the bearing. The fine-adjusting screw 252 and the rotating shaft 254 are coaxially arranged on both sides of the hand wheel 251, and the fine-adjusting screw 252 is arranged parallel to the positioning rod 22. The first slider 24 is fixed, and the hand wheel 251 is turned. The threaded engagement of the fine-adjusting screw 252 and the nut 253 will drive the second slider 26 to move closer to or away from the first slider 24, thereby accurately fine-tuning the feeding action of the positioning rod 22 and improving the measurement accuracy.

[0038] In a specific embodiment, a scale 27 is provided on the guide rail seat 21 , and a marking line 28 is provided on the second slider 26 ; limit blocks 212 are provided at both ends of the slide slot 211 , and a limit rod 213 is provided on one side of the first slider 24 facing the second slider 26 .

[0039] The limit block 212 can prevent the first slider 24 or the second slider 26 from sliding out of the slide groove 211 due to careless operation. A scale 27 is provided on the top surface of the guide rail seat 21, and the scale 27 is arranged along the length direction of the guide rail seat 21. A marking line 28 is provided on the second slider 26. After the marking line 28 is aligned with the scale 27, the moving distance of the positioning rod 22 can be accurately read. At the same time, in order to ensure that the marking line 28 is aligned with the starting point of the scale 27 after resetting, a limit rod 213 is provided on the first slider 24. When the first slider 24 abuts against the limit block 212, the hand wheel 251 is adjusted to make the second slider 26 abut against the limit rod 213. At this time, the marking line 28 coincides with the starting point of the scale 27. In this way, it is ensured that the extension amount of the positioning rod 22 is always the same each time the positioning rod 22 is adjusted, and the accuracy of the measurement is ensured.

[0040] In a specific embodiment, the slide groove 211 is a dovetail groove, and the first slider 24 and the second slider 26 fit in the slide groove 211; a first fastening hole is opened on the first slider 24, and the first fastening hole is threaded with a first locking screw 41. One end of the first locking screw 41 can be tightened to the bottom of the slide groove 211 after passing through the first fastening hole.

[0041] When the extension amount of the positioning rod 22 is adjusted, in order to prevent the first slider 24 or the positioning rod 22 from accidentally touching and causing the extension amount reading to change, the first locking screw 41 is tightened so that one end of the first locking screw 41 passes through the first fastening hole and is pressed against the bottom of the slide groove 211, thereby pressing the inclined surface of the first slider 24 against the inclined surface of the dovetail slide groove 211, and then locking the first slider 24 in the slide groove 211. Of course, the second slider 26 can also be provided with a first fastening hole and a first locking screw 41, so that the first slider 24 and the second slider 26 can be locked at the same time.

[0042] In a specific embodiment, in order to ensure that the positioning rod 22 remains in a horizontal state during the extension process, a bracket 29 for supporting the positioning rod 22 is provided at one end of the guide rail seat 21, and the positioning rod 22 is slidably fitted on the bracket 29.

[0043] In a specific embodiment, a steering column 214 is provided at the bottom of the guide rail seat 21, and the steering column 214 is rotatably connected to the support frame 1; a second fastening hole 11 and a third fastening hole are provided on the support frame 1, and a first ear 215 and a second ear 216 are provided on the guide rail seat 21, and a second locking screw 42 is threadedly fitted on the first ear 215, and a third locking screw 43 is threadedly fitted on the second ear 216; when the second locking screw 42 is locked in the second fastening hole 11, the positioning rod 22 is parallel to the laser beam a31, and when the third locking screw 43 is locked in the third fastening hole, the positioning rod 22 is perpendicular to the laser beam a31.

[0044] Before measurement, it is necessary to rotate the guide rail seat 21 to adjust the positioning rod 22 to be vertically against the wall, and after measurement, the guide rail seat 21 needs to be reset. Therefore, by locking the second locking screw 42 on the first ear 215 in the second fastening hole 11, the length direction of the guide rail seat 21 is parallel to the length direction of the support frame 1, and the positioning rod 22 is also parallel to the laser beam a31. By rotating the guide rail seat 21, the third locking screw 43 on the second ear 216 is locked in the third fastening hole. At this time, the length direction of the guide rail seat 21 is perpendicular to the length direction of the support frame 1, and the positioning rod 22 is also perpendicular to the laser beam a31, and the guide rail seat 21 is locked at a 90° angle with the support frame 1.

[0045] In a specific embodiment, see Figure 3 The support frame 1 includes two bases 12 and two parallel sliding rods 13. Each base 12 is provided with a guide rail seat 21, and the base 12 is slidably fitted on the two sliding rods 13; a fourth fastening hole is provided on the base 12, and the fourth fastening hole has an internal thread fitted with a fourth locking screw 44. The fourth locking screw 44 can be tightened on the sliding rod 13 after passing through the fourth fastening hole.

[0046] In order to improve the application scope of the measuring tool, the support frame 1 includes a base 12 and a slide bar 13. The base 12 is slidably matched on the slide bar 13, and each base 12 is provided with a guide rail seat 21. The fourth locking screw 44 is locked in the fourth fastening hole so that the fourth locking screw 44 is pressed against the slide bar 13, thereby fixing the base 12 on the slide bar 13. After loosening the fourth locking screw 44, the position of the base 12 can also be arbitrarily slid. In this way, the application scope of the measuring tool is improved, and the squareness of different positions and different bays can be quickly detected according to the length of the wall and the detection requirements.

[0047] See also Figure 5 In a specific embodiment, a lifting bracket 5 is also included. The lifting bracket 5 includes a support base 51, a lifting screw 52 and a support plate 53. The support base 51 is provided with a screw hole. The lifting screw 52 is fitted in the screw hole along a vertical thread. The support plate 53 is arranged at the top of the lifting screw 52, ​​and the base 12 is installed on the support plate 53. In order to install and fix the support frame 1 on the floor slab, the lifting bracket 5 is also included in this embodiment. Before measurement, the support plate 53 is rotated to drive the lifting screw 52 to rise and fall relative to the support base 51, and the support plates 53 of the two lifting brackets 5 are adjusted to the same height, and then the base 12 is placed on the support plate 53.

[0048] To measure squareness using this measurement tool, follow these steps:

[0049] Step 1: According to the length of the wall to be measured, adjust the distance between the two bases 12 on the slide bar 13 and lock them with the fourth locking screw 44;

[0050] Step 2: Rotate the support plate 53, adjust the support plates 53 of the two lifting brackets 5 to the same level, adjust the distance between the two lifting brackets 5, and then place the base 12 on the support plate 53;

[0051] Step 3: Rotate the guide rail seat 21 to lock the third locking screw 43 in the third fastening hole;

[0052] Step 4: Observe whether the marking line 28 coincides with the starting point of the scale 27. If so, slide the first slider 24 to stop the positioning rod 22 before it touches the wall, rotate the hand wheel 251 to slowly make the positioning rod 22 lean against the wall, and finally lock the first locking screw 41.

[0053] Step 5: Adjust the moving distances of the two positioning rods 22 to be consistent and both of them are against the wall;

[0054] Step 6: Measure the distance between the laser beam b32 and the wall, measure multiple positions (at least three positions along the transmission direction of the laser beam b32), and record the data.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A masonry squareness measuring tool, characterized by: It includes a support frame, a positioning device and a laser alignment device; The support frame is provided with two positioning devices, which include a guide rail seat, a slide seat and a positioning lever. The guide rail seat is rotatably connected to the support frame, and a positioning point is provided on the guide rail seat; the slide seat is slidably fitted in the guide rail seat, and the positioning lever is connected to the slide seat, and the positioning lever extends along the length direction of the guide rail seat; The laser alignment device is arranged at one end of the support frame, and includes two horizontal laser beams a and laser beam b, wherein the laser beam a and the laser beam b are perpendicular to each other, and the laser beam a is transmitted along the length direction of the support frame; during measurement, the laser beam a coincides with the two positioning points, and the two positioning rods are perpendicular to the wall surface and extend the same amount; The guide rail seat is provided with a slide groove, and the slide seat is slidably fitted in the slide groove; the slide seat comprises a first slider, a fine-tuning mechanism and a second slider, the first slider and the second slider are respectively connected to two ends of the fine-tuning mechanism, a positioning lever is provided on the second slider, the positioning lever extends toward a side away from the first slider, and the fine-tuning mechanism is used to precisely fine-tune the feeding action of the positioning lever; The fine-tuning mechanism comprises a hand wheel, a fine-tuning screw and a nut. A rotating shaft is coaxially arranged on one side of the hand wheel, and the rotating shaft is rotatably connected to the first slider. The fine-tuning screw is coaxially arranged on the side of the hand wheel away from the rotating shaft. The nut is fixed on the second slider, and the fine-tuning screw thread is fitted in the nut. The guide rail seat is provided with a scale, and the second slider is provided with a marking line; limit blocks are provided at both ends of the slide groove, and a limit rod is provided on the side of the first slider facing the second slider; A bracket for supporting the positioning lever is provided at one end of the guide rail seat, and the positioning lever is slidably fitted on the bracket.

2. The masonry squareness measuring tool according to claim 1, characterized in that: The slide groove is a dovetail groove, and the first slider and the second slider are conformably fitted in the slide groove; a first fastening hole is opened on the first slider, and the first fastening hole has an internal thread fitted with a first locking screw, and one end of the first locking screw can be tightened against the bottom of the slide groove after passing through the first fastening hole.

3. The masonry squareness measuring tool according to claim 1, characterized in that: A steering column is provided at the bottom of the guide rail seat, and the steering column is rotatably connected to the support frame; a second fastening hole and a third fastening hole are provided on the support frame, and a first support ear and a second support ear are provided on the guide rail seat, a second locking screw is threadedly matched on the first support ear, and a third locking screw is threadedly matched on the second support ear; When the second locking screw is locked in the second fastening hole, the positioning rod is parallel to the laser beam a, and when the third locking screw is locked in the third fastening hole, the positioning rod is perpendicular to the laser beam a.

4. The masonry squareness measuring tool according to claim 3, characterized in that: The support frame includes two bases and two parallel sliding rods, each of the bases is provided with a guide rail seat, and the base is slidably matched on the two sliding rods; The base is provided with a fourth fastening hole, the inner thread of the fourth fastening hole is matched with a fourth locking screw, and the fourth locking screw can be tightened on the sliding rod after passing through the fourth fastening hole.

5. The masonry squareness measuring tool according to claim 4, characterized in that: It also includes a lifting bracket, which includes a support foot, a lifting screw and a support plate. The support foot is provided with a screw hole, the lifting screw is fitted in the screw hole along a vertical thread, the support plate is arranged at the top of the lifting screw, and the support is installed on the support plate.

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