Beam bottom formwork laser plumbing positioning method

Abstract

The invention discloses a beam bottom template laser plumbing positioning method, which comprises the following steps of: adjusting and determining the mounting position of a laser plumbing instrument through the plumbing point of a lower laser beam projected on the concrete beam column ground, wherein the lower laser beam is vertically emitted by the laser plumbing instrument arranged below a template bracket; a laser receiving ruler and a beam bottom formwork are installed and combined and move on a formwork support, and position adjustment and determination of the beam bottom formwork on the formwork support are achieved through plumbing positioning of an upper laser beam vertically emitted by a laser plumbing instrument on the laser receiving ruler; the laser receiving rulers and the beam bottom formworks are positioned for multiple times, and then laser plumbing positioning installation of all the beam bottom formworks of the concrete beam column can be achieved. According to the method, the installation position of the laser plumbing instrument can be conveniently determined, laser plumbing points can be received, the beam bottom formwork can be positioned, the laser brightness is large, the influence of wind blowing is avoided, observation is convenient, recognition is accurate, the beam bottom formwork positioning precision and positioning efficiency are high, and operation is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a laser point positioning method for a beam bottom template. Background Art

[0002] During structural engineering construction, for reinforced concrete beams, it is first necessary to locate and install the concrete beam bottom formwork, then install and fix the concrete beam side formwork, and then carry out steel bar and concrete construction.

[0003] The positioning of concrete beam bottom formwork is currently primarily accomplished using traditional plumb bobs. However, these plumb bobs are susceptible to wind, affecting positioning accuracy, and their pendulum motion results in low positioning efficiency.

[0004] Therefore, it is very necessary to develop a laser point positioning method for the beam bottom template that has high laser brightness, is easy to observe, is not affected by wind, and has high positioning efficiency to replace the traditional beam bottom template line pendant positioning system. Summary of the Invention

[0005] Based on the technical problems existing in the background technology, the present invention proposes a laser point positioning method for a beam bottom template.

[0006] The present invention proposes a method for positioning a beam bottom template by laser projection, comprising the following steps:

[0007] S1. Set up a template support of a predetermined height at the preset position of the concrete beam column;

[0008] S2. Mark the projections of the concrete beams and columns on the ground, including the beam projection edge lines and column projection edge lines;

[0009] S3. Place the laser projector on the ground below the template support, and adjust the installation position of the laser projector by moving it so that the projection positioning mark formed on the ground by the vertically emitted lower laser beam of the laser projector is located at a predetermined position on the projection edge of the beam, thereby determining the installation position of the laser projector;

[0010] S4. Install and assemble the laser receiving ruler and the beam bottom template so that the laser receiving ruler is engaged at the right angle corner of the beam bottom template;

[0011] S5. The laser receiving ruler and the beam bottom template are moved as a whole on the template support so that the upper laser beam emitted vertically by the laser projector is projected at a predetermined position on the laser receiving ruler, thereby determining the installation position of a certain point of the beam bottom template;

[0012] S6. By moving the laser projector and positioning the laser receiving ruler and the beam bottom template multiple times, the laser projecting positioning installation of all beam bottom templates of concrete beams and columns can be achieved.

[0013] Preferably, in step S4, the laser receiving ruler includes a translucent ruler body, an end positioning protrusion, a right-angle positioning protrusion, and a side positioning protrusion. The end positioning protrusion is arranged at one end of the lower end surface of the ruler body, and a positioning groove is provided at the midline of the upper and lower end surfaces of the ruler body and is perpendicular to the end positioning protrusion; the right-angle positioning protrusion is arranged in the positioning groove on the lower end surface of the ruler body, close to one end of the end positioning protrusion; the side positioning protrusion is arranged in the positioning groove on the lower end surface of the ruler body, away from the other end of the end positioning protrusion; the upper end surfaces of the ruler body on both sides of the positioning groove are provided with distance scale lines and distance marks.

[0014] Preferably, the ruler body, the end positioning protrusion, the right-angle positioning protrusion, and the side positioning protrusion are an integrally formed structure.

[0015] Preferably, the positioning line groove is an elongated space composed of two mutually parallel positioning lines.

[0016] Preferably, the widths of the right-angle positioning protrusion and the side positioning protrusion are equal to the distance between two mutually parallel positioning lines of the same positioning groove.

[0017] Preferably, the laser point projection instrument includes a track ruler assembly, a support base assembly, a ring and a point projection device, the support base assembly is installed on the track ruler assembly for sliding, the ring is installed on the support base assembly and rotates through gear transmission, and the point projection device is provided with two and symmetrically installed on both sides of the ring; the point projection device includes a cylindrical point projection emitting device, and the cylindrical point projection emitting device is provided with a laser emission source capable of vertically emitting upper laser beams and lower laser beams.

[0018] Preferably, the point-casting device further comprises a cylindrical outer shell and an annular connecting piece, wherein the cylindrical outer shell is fixedly mounted on one side of the annular piece, and transparent glass is provided at both ends thereof; the annular connecting piece is arranged on the inner side of the cylindrical outer shell and is movably connected through two symmetrically arranged pin shafts 1, and the upper end of the cylindrical point-casting launching device is arranged on the inner side of the annular connecting piece and is movably connected through two symmetrically arranged pin shafts 2; three or more threaded adjustment holes are symmetrically provided on the outer wall of the lower end of the cylindrical outer shell and are all equipped with stabilizing adjustment bolts, and the front end of the stabilizing adjustment bolt is in contact with or disengaged from the outer wall of the cylindrical point-casting launching device.

[0019] Preferably, the track ruler assembly includes a track ruler body, two mutually parallel slide rails are provided on the track ruler body, and the support base assembly is installed on the two slide rails for sliding; an intermediate marking line consistent with the direction of the slide rails is provided between the two slide rails, and the point positioning mark formed on the ground by the lower laser beam emitted vertically by the laser projector is located on the intermediate marking line, and length scale marks are provided on both sides of the intermediate marking line; the zero scale line of the length scale mark on one side of the intermediate marking line is located at one end of the track ruler body, and the zero scale line of the length scale mark on the other side is located in the center of the track ruler body; at least one bubble level device is provided on the track ruler body, and at least three height adjustment pads are provided on the lower end surface of the track ruler body.

[0020] Preferably, the support base assembly includes a support base and a support ear plate, the support base is installed on two parallel slide rails, and two support ear plates are provided and symmetrically installed on the support base; an axis rod is connected between the two support ear plates, and the annular member is provided between the two support ear plates and installed on the axis rod through a bearing; an adjustment opening is provided on one of the support ear plates, an adjustment gear is provided in the adjustment opening and is fixed to the inner end surface of the other support ear plate through a pin, the transmission teeth provided on the outer periphery of the adjustment gear are meshed with the transmission teeth provided on the outer periphery of the annular member, and an adjustment handle is provided on the outer end surface of the adjustment gear.

[0021] Preferably, a vertical marking line A is provided at the center of the outer end surface of the support ear plate with the adjustment opening; when the two projection devices are at the same height, a vertical marking line B is provided at the center of the end surface of the ring member, and the vertical marking line A and the vertical marking line B are on the same straight line.

[0022] The beneficial effects of the present invention are:

[0023] The present invention provides a method for positioning a beam bottom formwork by laser projection, which can adjust and determine the installation position of the laser projection instrument by emitting a lower laser beam from a laser projection instrument disposed below the formwork support; and can achieve position adjustment and determination of the laser receiving scale and the beam bottom formwork on the formwork support by projecting an upper laser beam emitted by the laser projection instrument on a laser receiving scale. The present invention provides a method for positioning a beam bottom formwork by laser projection, which can facilitate determination of the installation position of the laser projection instrument and receive the laser projection to achieve positioning of the beam bottom formwork. The laser has high brightness, is not affected by wind, is easy to observe, is accurately identified, has high beam bottom formwork positioning accuracy and efficiency, and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 : Schematic diagram of laser point positioning of the present invention;

[0025] Figure 2: A schematic structural diagram of a laser projection device according to the present invention;

[0026] Figure 3 : A schematic structural diagram of the support base assembly and the annular member of the laser projector of the present invention;

[0027] Figure 4 : A schematic structural diagram of a laser projection device of the present invention;

[0028] Figure 5 : A schematic structural diagram of the laser receiving ruler of the present invention;

[0029] Figure 6 : A top view of the structure of the laser receiving ruler of the present invention;

[0030] Figure 7 : Left view of the structure of the laser receiving ruler of the present invention;

[0031] Figure 8 : Schematic diagram of the installation structure of the laser receiving ruler and the beam bottom template of the present invention Figure 1 (Top view angle);

[0032] Figure 9 : Schematic diagram of the installation structure of the laser receiving ruler and the beam bottom template of the present invention Figure 2 (Looking up). DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described 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.

[0034] Example 1:

[0035] Reference Figure 1 The present invention proposes a beam bottom template laser projection positioning method, which is applied to the positioning and installation of the beam bottom template 4 before pouring concrete beams and columns, and includes the following steps:

[0036] S1. Set up a template support 3 of a predetermined height at a preset position of a concrete beam column.

[0037] S2. Mark the projections of the concrete beams and columns on the ground, including beam projection edge line 1 and column projection edge line 2.

[0038] S3. Place the laser projector 5 on the ground below the template support 3. The laser projector 5 is equipped with a laser light source capable of vertically emitting an upper laser beam 7 and a lower laser beam 8. By moving and adjusting the installation position of the laser projector 5, the positioning mark 9 formed on the ground by the vertically emitted lower laser beam 8 of the laser projector 5 is located at a predetermined position on the beam projection edge line 1, thereby determining the installation position of the laser projector 5.

[0039] S4. Install and assemble the laser receiving ruler 6 and the beam bottom template 4 so that the laser receiving ruler 6 is engaged at the right-angle corner of the beam bottom template 4.

[0040] S5. Move the combination of the laser receiving ruler 6 and the beam bottom template 4 on the template bracket 3 so that the upper laser beam 7 emitted vertically by the laser projector 5 is projected at a predetermined position on the laser receiving ruler 6, thereby determining the installation position of a certain point of the beam bottom template 4.

[0041] S6. By moving the laser projector 5 and positioning the laser receiving ruler 6 and the beam bottom template 4 multiple times, the laser projecting positioning installation of all the beam bottom templates 4 of the concrete beam column can be achieved.

[0042] The laser point projection method for positioning the bottom beam template of the present invention can conveniently determine the installation position of the laser point projection instrument and receive the laser projection to realize the positioning of the bottom beam template. The laser brightness is high and is not affected by wind. It is easy to observe and accurately identify. The bottom beam template positioning accuracy and positioning efficiency are high and the operation is convenient.

[0043] Example 2:

[0044] Reference Figure 1-9 The present invention proposes a beam bottom template laser projection positioning method, which is applied to the positioning and installation of the beam bottom template 4 before pouring concrete beams and columns, and includes the following steps:

[0045] S1. Set up a template support 3 of a predetermined height at a preset position of a concrete beam column.

[0046] S2. Mark the projections of the concrete beams and columns on the ground, including beam projection edge line 1 and column projection edge line 2.

[0047] S3. Place the laser projector 5 on the ground below the template bracket 3. The laser projector 5 is provided with a laser light source capable of vertically emitting an upper laser beam 7 and a lower laser beam 8. By moving and adjusting the installation position of the laser projector 5, the projection positioning mark 9 formed on the ground by the lower laser beam 8 vertically emitted by the laser projector 5 is located at a predetermined position on the beam projection edge line 1, thereby realizing the determination of the installation position of the laser projector 5.

[0048] like Figure 2As shown, the laser point projector 5 includes a track ruler assembly 51, a support base assembly 52, a ring member 53, and a point projector 54. The track ruler assembly 51 serves as the supporting base and moving distance scale for the entire laser point projector 5, facilitating the sliding installation of the support base assembly 52 on the track ruler assembly 51, thereby enabling the multi-point positioning of the laser point projector 5. The ring member 53 is mounted on the support base assembly 52 and rotated via a gear transmission, facilitating the tilting of the upper laser beam 7 and the lower laser beam 8 vertically emitted from the point projector 54, thereby locating and verifying the edge line of the beam bottom formwork 4. Two point projectors 54 are provided and symmetrically mounted on both sides of the ring member 53. The point projector 54 includes a cylindrical point projector 543, which is equipped with a laser emission source capable of vertically emitting the upper laser beam 7 and the lower laser beam 8. The provision of two point projectors 54 enables simultaneous and synchronous positioning of the right-angle turning point and the edge of the beam bottom formwork 4, effectively improving the positioning efficiency of the beam bottom formwork 4.

[0049] S4. Install and assemble the laser receiving ruler 6 and the beam bottom template 4 so that the laser receiving ruler 6 is engaged at the right-angle corner of the beam bottom template 4.

[0050] like Figure 5-9 As shown, the laser receiving ruler 6 comprises a translucent ruler body 61, an end positioning protrusion 62, a right-angle positioning protrusion 63, and a side positioning protrusion 64. The end positioning protrusion 62 is located at one end of the lower end surface of the ruler body 61. A positioning groove 651 is provided at the midline of the upper and lower end surfaces of the ruler body 61 and is perpendicular to the end positioning protrusion 62. The right-angle positioning protrusion 63 is provided in the positioning groove 651 on the lower end surface of the ruler body 61, near the end positioning protrusion 62. The side positioning protrusion 64 is provided in the positioning groove 651 on the lower end surface of the ruler body 61, away from the end positioning protrusion 62. Distance scale lines 652 and distance markings 653 are provided on the upper end surface of the ruler body 61 on both sides of the positioning groove 651.

[0051] like Figure 8 、 Figure 9As shown, in the combined installation of the laser receiving ruler 6 and the beam bottom template 4, first, the lower end face of the ruler body 61 is tightly attached to the upper end face of the beam bottom template 4, and the right angle of the beam bottom template 4 is tightly attached to the intersection of the end positioning protrusion 62 and the positioning groove 651 on the lower end face of the ruler body 61, and the right angle side 1 41 of the beam bottom template 4 is tightly attached to the inner end face of the end positioning protrusion 62 on the lower end face of the ruler body 61, and the other right angle side 2 42 of the beam bottom template 4 is tightly attached to the side end face of the right angle positioning protrusion 63 and the side positioning protrusion 64, thereby completing the combined installation of the laser receiving ruler 6 and the beam bottom template 4. By providing the end positioning protrusion 62, right-angle positioning protrusion 63 and side positioning protrusion 64 on the ruler body 61, it is possible to facilitate installation with the beam bottom template 4; at the same time, the positioning line groove 651, distance scale line 652 and distance mark 653 provided on the ruler body 61 can facilitate the reception and position identification and adjustment of the laser point, thereby improving the positioning accuracy of the beam bottom template 4.

[0052] S5. Move the combination of the laser receiving ruler 6 and the beam bottom template 4 on the template bracket 3 so that the upper laser beam 7 emitted vertically by the laser projector 5 is projected at a predetermined position on the laser receiving ruler 6, thereby determining the installation position of a certain point of the beam bottom template 4.

[0053] S6. By moving and rotating the projection device 54 of the mobile laser projection instrument 5 on the track ruler assembly 51, and performing multiple point positioning and edge positioning on the laser receiving ruler 6 and the beam bottom template 4, the laser projection positioning installation of all the beam bottom templates 4 of the concrete beam column can be achieved.

[0054] Example 3:

[0055] Reference Figure 1-9 The present invention proposes a beam bottom template laser projection positioning method, which is applied to the positioning and installation of the beam bottom template 4 before pouring concrete beams and columns, and includes the following steps:

[0056] S1. Set up a template support 3 of a predetermined height at a preset position of a concrete beam column.

[0057] S2. Mark the projections of the concrete beams and columns on the ground, including beam projection edge line 1 and column projection edge line 2.

[0058] S3. Place the laser projector 5 on the ground below the template bracket 3. The laser projector 5 is provided with a laser light source capable of vertically emitting an upper laser beam 7 and a lower laser beam 8. By moving and adjusting the installation position of the laser projector 5, the projection positioning mark 9 formed on the ground by the lower laser beam 8 vertically emitted by the laser projector 5 is located at a predetermined position on the beam projection edge line 1, thereby realizing the determination of the installation position of the laser projector 5.

[0059] like Figure 2-4 As shown, the laser point projector 5 includes a track ruler assembly 51, a support base assembly 52, a ring member 53, and a point projector 54. The track ruler assembly 51 serves as the supporting base and moving distance scale for the entire laser point projector 5, facilitating the sliding installation of the support base assembly 52 on the track ruler assembly 51, thereby enabling the multi-point positioning of the laser point projector 5. The ring member 53 is mounted on the support base assembly 52 and rotated via a gear transmission, facilitating the tilting of the upper laser beam 7 and the lower laser beam 8 vertically emitted from the point projector 54, thereby locating and verifying the edge line of the beam bottom formwork 4. Two point projectors 54 are provided and symmetrically mounted on both sides of the ring member 53. The point projector 54 includes a cylindrical point projector 543, which is equipped with a laser emission source capable of vertically emitting the upper laser beam 7 and the lower laser beam 8. The provision of two point projectors 54 enables simultaneous and synchronous positioning of the right-angle turning point and the edge of the beam bottom formwork 4, effectively improving the positioning efficiency of the beam bottom formwork 4.

[0060] The track ruler assembly 51 includes a track ruler body 511, which is equipped with two parallel slide rails 512. The support base assembly 52 is mounted and slides on the two slide rails 512. A center mark 513 is set between the two slide rails 512, aligning with the direction of the slide rails 512. The point positioning mark 9 formed on the ground by the vertically emitted lower laser beam 8 of the laser projector 5 is located on the center mark 513. In other words, the center mark 513 on the track ruler body 511 overlaps with the beam projection edge line 1.

[0061] Length scale markings are provided on both sides of the intermediate marking line 513. The zero mark on one side of the intermediate marking line 513 is located at one end of the track ruler body 511, while the zero mark on the other side is located in the center of the track ruler body 511. The provision of length scale markings with zero marks at two different positions can improve the convenience of using the laser projector 5.

[0062] At least one bubble level 514 is provided on the track ruler body 511, and at least three height adjustment feet 515 are provided on the lower end surface of the track ruler body 511. By adjusting the height adjustment feet 515 and using the bubble level 514, the track ruler body 511 can be kept level, thereby improving the positioning accuracy of the entire laser point projector 5.

[0063] The support base assembly 52 includes a support base 521 and support lugs 522. The support base 521 is mounted on two parallel slide rails 512. Two support lugs 522 are provided and symmetrically mounted on the support base 521. A shaft 524 is connected between the two support lugs 522. The annular member 53 is disposed between the two support lugs 522 and mounted on the shaft 524 via a bearing 523. One of the support lugs 522 has an adjustment opening. An adjustment gear 525 is disposed in the adjustment opening and is fixed to the inner end surface of the other support lug 522 via a pin. Transmission teeth on the outer periphery of the adjustment gear 525 mesh with transmission teeth on the outer periphery of the annular member 53. An adjustment handle 526 is provided on the outer end surface of the adjustment gear 525. By using the adjustment handle 526, the annular member 53 and the two projection devices 54 can be driven to rotate, thereby controlling the upper laser beam 7 and the lower laser beam 8 vertically emitted by the cylindrical projection emitting device 543 to be in an inclined state, thereby performing projection positioning on the edge line of the beam bottom template 4, which is easy to operate.

[0064] A vertical marking line A527 is provided at the center of the outer end surface of the support ear plate 522 with an adjustment opening, and a vertical marking line B528 is provided at the center of the end surface of the ring member 53. When the two projection devices 54 are at the same height, the vertical marking line A527 and the vertical marking line B528 are on the same straight line. At this time, the two projection devices 54 are in a symmetrical state at the same height.

[0065] The projection device 54 also includes a cylindrical outer shell 541 and an annular connector 542. The cylindrical outer shell 541 is fixedly mounted on one side of the annular member 53, with transparent glass panels at both ends. The annular connector 542 is positioned inside the cylindrical outer shell 541 and is movably connected via two symmetrically arranged pins 544. The upper end of the cylindrical projection launcher 543 is positioned inside the annular connector 542 and is movably connected via two symmetrically arranged pins 545. The line connecting the two pins 544 is perpendicular to the line connecting the two pins 545. Due to the movably connected pins 544 and 545, the cylindrical projection launcher 543 remains vertical due to its own weight, thereby ensuring that the emitted upper laser beam 7 and lower laser beam 8 are vertical.

[0066] Three or more threaded adjustment holes are symmetrically arranged on the outer wall of the lower end of the cylindrical housing 541, each of which is equipped with a stabilizing adjustment bolt 546. The front ends of the stabilizing adjustment bolts 546 are in contact with or disengaged from the outer wall of the cylindrical point-casting launcher 543. When the three or more stabilizing adjustment bolts 546 are disengaged from the outer wall of the cylindrical point-casting launcher 543, the cylindrical point-casting launcher 543 can be maintained in a vertical position. When the three or more stabilizing adjustment bolts 546 are in synchronous contact with the outer wall of the cylindrical point-casting launcher 543, the cylindrical point-casting launcher 543 can be fixed, which not only ensures the stability of the cylindrical point-casting launcher 543 but also facilitates the synchronous rotation of the upper laser beam 7 and lower laser beam 8 emitted by the cylindrical point-casting launcher 543 when the annular member 53 and the point-casting launcher 54 rotate.

[0067] The specific operation for determining the installation position of the laser projector 5 is as follows:

[0068] S31. Place the laser projector 5 on the ground below the template support 3, and make preliminary adjustments to overlap the intermediate marking line 513 on the track ruler body 511 with the beam projection edge line 1.

[0069] For the convenience of observation and calculation, in this step, the zero scale line marked on the length scale at one end of the track ruler body 511 can be aligned with the column projection edge line 2.

[0070] S32, adjust the height adjustment foot 515, and use the bubble level device 514 to make the track ruler body 511 in a horizontal state, and then re-check whether the intermediate mark 513 and the beam projection edge line 1 are superimposed. At this time, the zero scale line and the column projection edge line are also aligned.

[0071] S33, adjusting the stabilizing adjusting bolt 546 so that it is separated from the outer wall of the cylindrical point-casting launching device 543.

[0072] S34. Slide and adjust the supporting base assembly 52, the annular member 53 and the point projection device 54 as a whole on the track ruler body 511, so that the lower laser beam 8 emitted vertically by the laser point projector 5 penetrates the track ruler body 511 and the point projection positioning mark 9 formed on the ground is located at a predetermined position on the beam projection edge line 1, and the specific position is determined by the length scale marks on both sides of the intermediate marking line 513 of the track ruler body 511 that overlaps with the beam projection edge line 1.

[0073] For example: the projection positioning mark 9 after the lower laser beam 8 penetrates the zero scale line of the track ruler body 511 is located at the intersection of the beam projection edge line 1 and the column projection edge line 2, or the projection positioning mark 9 after the lower laser beam 8 penetrates the 30mm, 50mm, 80mm and other scale lines marked on the length scale of the track ruler body 511 is located on the beam projection edge line 1.

[0074] S4. Install and assemble the laser receiving ruler 6 and the beam bottom template 4 so that the laser receiving ruler 6 is engaged at the right-angle corner of the beam bottom template 4.

[0075] like Figure 5-9 As shown, the laser receiving scale 6 comprises a scale body 61, end positioning projections 62, right-angle positioning projections 63, and side positioning projections 64. The scale body 61 is made of translucent PC board, and the scale body 61, end positioning projections 62, right-angle positioning projections 63, and side positioning projections 64 are integrally formed. The laser spot emitted by the laser light source directly strikes the scale body 61 from below. The transparency of the scale body 61 allows for easy observation of the specific receiving position of the laser spot from above, facilitating positional adjustments of the scale body 61 and the beam bottom formwork 4.

[0076] The end positioning protrusion 62 is provided at one end of the lower end surface of the scale body 61, with the inner end surface of the end positioning protrusion 62 perpendicular to the upper end surface of the scale body 61. A positioning line groove 651 is provided at the midline of the upper end surface of the scale body 61. The positioning line groove 651 is an elongated space formed by two parallel positioning lines and is perpendicular to the end positioning protrusion 62.

[0077] The right-angle positioning protrusion 3 is located in the positioning groove 51 on the lower end of the scale body 1, near the end positioning protrusion 2. The side positioning protrusion 4 is located in the positioning groove 51 on the lower end of the scale body 1, away from the end positioning protrusion 2. The right-angle positioning protrusion 3 and the side positioning protrusion 4 are rectangular parallelepiped structures and are perpendicular to the upper end of the scale body 1.

[0078] The upper end surfaces of the ruler body 61 on both sides of the positioning groove 651 are provided with distance scale lines 652 and distance markings 653. The zero mark of the distance scale lines 652 is located at the junction of one end of the ruler body 61 and the end positioning protrusion 62. During the laser point reception process, the specific deviation of the laser point can be clearly observed through the distance scale lines 652 and distance markings 653, and the position of the ruler body 61 and the beam bottom template 4 can be adjusted appropriately. The right-angle positioning protrusion 63 is tightly attached to the inner end surface of the end positioning protrusion 62 and forms a right angle with the end positioning protrusion 62, facilitating engagement and limiting at a right angle with the beam bottom template 4.

[0079] like Figure 8 、 Figure 9As shown, in the combined installation of the laser receiving ruler 6 and the beam bottom template 4, first, the lower end face of the ruler body 61 is tightly attached to the upper end face of the beam bottom template 4, and the right angle of the beam bottom template 4 is tightly attached to the intersection of the end positioning protrusion 62 and the positioning groove 651 on the lower end face of the ruler body 61, and the right angle side 1 41 of the beam bottom template 4 is tightly attached to the inner end face of the end positioning protrusion 62 on the lower end face of the ruler body 61, and the other right angle side 2 42 of the beam bottom template 4 is tightly attached to the side end face of the right angle positioning protrusion 63 and the side positioning protrusion 64, thereby completing the combined installation of the laser receiving ruler 6 and the beam bottom template 4. By providing the end positioning protrusion 62, right-angle positioning protrusion 63 and side positioning protrusion 64 on the ruler body 61, it is possible to facilitate installation with the beam bottom template 4; at the same time, the positioning line groove 651, distance scale line 652 and distance mark 653 provided on the ruler body 61 can facilitate the reception and position identification and adjustment of the laser point, thereby improving the positioning accuracy of the beam bottom template 4.

[0080] S5. After the laser receiving ruler 6 and the beam bottom template 4 are assembled and installed, the whole is placed on the template bracket 3 for movement, and the projection point of the upper laser beam 7 is received by the laser receiving ruler 6, that is, the upper laser beam 7 is projected and displayed on the laser receiving ruler 6. Then, by adjusting the position of the laser receiving ruler 6 and the beam bottom template 4 on the template bracket 3, the upper laser beam 7 emitted vertically by the laser projection instrument 5 is projected at a predetermined position on the laser receiving ruler 6, thereby realizing the determination of the installation position of a certain point of the beam bottom template 4.

[0081] The position of the upper laser beam 7 on the laser receiving scale 6 should correspond to the position of the lower laser beam 8 on the length scale mark of the track scale body 511. For example, if the projection positioning mark 9 of the lower laser beam 8 after penetrating the zero scale line of the track scale body 511 is located at the intersection of the beam projection edge line 1 and the column projection edge line 2, then the upper laser beam 7 must be projected at the zero scale line on the laser receiving scale 6 (i.e., the right-angle corner of the beam bottom template 4). At this time, the right-angle corner of the beam bottom template 4 where the laser receiving scale 6 is installed and the intersection of the beam and column projections (the intersection of the beam projection edge line 1 and the column projection edge line 2) are on the same vertical line, thereby achieving the projection positioning and determination of this right-angle corner of the beam bottom template 4. For example: if the lower laser beam 8 penetrates the 30mm, 50mm, 80mm and other scale lines marked on the length scale of the track ruler body 511, the upper laser beam 7 must be projected at the 30mm, 50mm, 80mm and other scale lines on the laser receiving ruler 6, so that the right-angle corner point of the beam bottom template 4 where the laser receiving ruler 6 is installed and the intersection of the beam-column projection (the intersection of the beam projection edge line 1 and the column projection edge line 2) are on the same vertical line, thereby realizing the projection positioning of the right-angle corner point of the beam bottom template 4.

[0082] S6. By moving and rotating the projection device 54 of the mobile laser projection instrument 5 on the track ruler assembly 51, and performing multiple point positioning and edge positioning on the laser receiving ruler 6 and the beam bottom template 4, the laser projection positioning installation of all the beam bottom templates 4 of the concrete beam column can be achieved.

[0083] The point-casting device 54 is slid on the track ruler assembly 51, and multiple point positioning of the beam bottom template 4 is performed in the same manner. The stabilizing adjustment bolt (546) is adjusted and its front end is fixed to the cylindrical point-casting transmitting device (543). Then, the ring member 53 and the two point-casting devices are rotated by adjusting the gear 525. Then, the point-casting positioning mark 9 of the lower laser beam 8 is still located on the beam projection edge line 1, while the point-casting position of the upper laser beam 7 is located at the edge of the concrete beam, thereby locating and verifying the edge line of the beam bottom template 4, thereby achieving laser point-casting positioning installation of all beam bottom templates 4 of the concrete beam column.

[0084] In step S4, the laser receiving ruler 6 includes a translucent ruler body 61, an end positioning protrusion 62, a right-angle positioning protrusion 63, and a side positioning protrusion 64. The end positioning protrusion 62 is arranged at one end of the lower end surface of the ruler body 61, and a positioning groove 651 is provided at the midline of the upper and lower end surfaces of the ruler body 61 and is perpendicular to the end positioning protrusion 62; the right-angle positioning protrusion 63 is provided in the positioning groove 651 on the lower end surface of the ruler body 61, close to one end of the end positioning protrusion 62; the side positioning protrusion 64 is provided in the positioning groove 651 on the lower end surface of the ruler body 61, away from the other end of the end positioning protrusion 62; the upper end surfaces of the ruler body 61 on both sides of the positioning groove 651 are provided with distance scale lines 652 and distance marks 653.

[0085] The scale body 61 , the end positioning protrusion 62 , the right-angle positioning protrusion 63 , and the side positioning protrusion 64 are an integrally formed structure.

[0086] The positioning line groove 651 is an elongated space formed by two mutually parallel positioning lines.

[0087] The widths of the right-angle positioning protrusion 63 and the side positioning protrusion 64 are equal to the distance between two mutually parallel positioning lines of the positioning line groove 651 .

[0088] Example 3:

[0089] Reference Figure 1-9 The present invention proposes a method for positioning the bottom beam template with laser projection, the structure of which is basically the same as that in Example 2, except that:

[0090] In step S4, the right-angle positioning protrusion 63 is not in close contact with the inner end surface of the end positioning protrusion 62, but is instead spaced apart from the end positioning protrusion 62 by a certain distance. Because the zero mark of the distance scale 652 is located at the junction of one end of the scale body 61 and the end positioning protrusion 62, the close contact between the right-angle positioning protrusion 63 and the end positioning protrusion 62 would, to a certain extent, obstruct the zero mark and the positioning groove 651. Since the zero mark is generally used more frequently, the distance gap between the right-angle positioning protrusion 63 and the end positioning protrusion 62 can avoid the zero mark, preventing it from being obstructed. At the same time, it does not affect the positional restriction of the right-angle positioning protrusion 63 on the other right-angled side 42 of the beam bottom template 4.

[0091] Example 4:

[0092] Reference Figure 1-9 The present invention proposes a method for positioning the bottom beam template with laser projection, the structure of which is basically the same as that in Example 2, except that:

[0093] In step S4, two end positioning protrusions 62, right-angle positioning protrusions 63, and side positioning protrusions 64 are each provided and symmetrically arranged. In addition to one end positioning protrusion 62, right-angle positioning protrusion 63, and side positioning protrusion 64 being arranged at their respective positions on the lower end surface of the scale body 61, another end positioning protrusion 62 is symmetrically arranged at one end of the upper end surface of the scale body 61, another right-angle positioning protrusion 63 is symmetrically arranged in a positioning groove 651 on the upper end surface of the scale body 61, near one end of the end positioning protrusion 62, and another side positioning protrusion 64 is symmetrically arranged in a positioning groove 651 on the upper end surface of the scale body 61, away from the other end of the end positioning protrusion 62.

[0094] During the positioning and installation of the beam bottom template 4, the upper end surface of the beam bottom template 4 can be tightly attached to the lower end surface of the scale body 61, and the lower end surface of the beam bottom template 4 can also be tightly attached to the upper end surface of the scale body 61 for combined installation and positioning of the beam bottom template 4.

[0095] It can be seen from Example 1, Example 2, Example 3, and Example 4 that the laser point positioning method for the beam bottom formwork of the present invention can conveniently determine the installation position of the laser point meter and receive the laser points to realize the positioning of the beam bottom formwork. The laser brightness is high, not affected by wind, easy to observe, accurate to identify, the beam bottom formwork positioning accuracy and positioning efficiency are high, and the operation is easy.

[0096] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A beam bottom template laser projection positioning method, characterized in that: The steps include: S1, erecting a template support (3) of a predetermined height at a preset position of a concrete beam column; S2. Mark the projections of the concrete beams and columns on the ground, including the beam projection edge line (1) and the column projection edge line (2); S3, placing the laser projector (5) on the ground below the template support (3), and adjusting the installation position of the laser projector (5) by moving so that the projection positioning mark (9) formed on the ground by the lower laser beam (8) vertically emitted by the laser projector (5) is located at a predetermined position on the beam projection edge line (1), thereby determining the installation position of the laser projector (5); S4, installing and assembling the laser receiving ruler (6) and the beam bottom template (4), so that the laser receiving ruler (6) is engaged at the right-angled corner of the beam bottom template (4); S5, the laser receiving ruler (6) and the beam bottom template (4) are moved as a whole on the template support (3), so that the upper laser beam (7) emitted vertically by the laser projector (5) is projected at a predetermined position on the laser receiving ruler (6), thereby achieving the installation position determination of a certain point of the beam bottom template (4); S6. By moving the laser point projection instrument (5) and positioning the laser receiving ruler (6) and the beam bottom template (4) multiple times, the laser point projection positioning installation of all the beam bottom templates (4) of the concrete beam column can be achieved.

2. A beam bottom template laser projection positioning method according to claim 1, characterized in that: In step S4, the laser receiving ruler (6) includes a translucent ruler body (61), an end positioning protrusion (62), a right-angle positioning protrusion (63), and a side positioning protrusion (64), wherein the end positioning protrusion (62) is arranged at one end of the lower end surface of the ruler body (61), and a positioning groove (651) is arranged at the midline of the upper and lower end surfaces of the ruler body (61) and is perpendicular to the end positioning protrusion (62); the right-angle positioning protrusion (63) is arranged in the positioning groove (651) on the lower end surface of the ruler body (61) at one end close to the end positioning protrusion (62); the side positioning protrusion (64) is arranged in the positioning groove (651) on the lower end surface of the ruler body (61) at the other end away from the end positioning protrusion (62); and the upper end surfaces of the ruler body (61) on both sides of the positioning groove (651) are provided with distance scale lines (652) and distance marks (653).

3. A beam bottom template laser projection positioning method according to claim 2, characterized in that: The scale body (61), the end positioning protrusion (62), the right-angle positioning protrusion (63), and the side positioning protrusion (64) are an integrally formed structure.

4. The method for positioning the beam bottom template by laser projection according to claim 2, characterized in that: The positioning line groove (651) is an elongated space composed of two mutually parallel positioning lines.

5. The method for positioning the beam bottom template by laser projection according to claim 2, characterized in that: The widths of the right-angle positioning protrusion (63) and the side positioning protrusion (64) are equal to the distance between two mutually parallel positioning lines of the positioning line groove (651).

6. The beam bottom template laser projection positioning method according to claim 1 is characterized in that: The laser point projection instrument (5) comprises a track ruler assembly (51), a support base assembly (52), an annular member (53) and a point projection device (54), wherein the support base assembly (52) is mounted on the track ruler assembly (51) for sliding, the annular member (53) is mounted on the support base assembly (52) and rotates through gear transmission, and two point projection devices (54) are provided and symmetrically mounted on both sides of the annular member (53); the point projection device (54) comprises a cylindrical point projection emitting device (543), wherein a laser emission source capable of vertically emitting an upper laser beam (7) and a lower laser beam (8) is provided in the cylindrical point projection emitting device (543).

7. A beam bottom template laser projection positioning method according to claim 6, characterized in that: The point-casting device (54) further comprises a cylindrical shell (541) and an annular connecting member (542). The cylindrical shell (541) is fixedly mounted on one side of the annular member (53), and transparent glass is provided at both ends thereof. The annular connecting member (542) is arranged on the inner side of the cylindrical shell (541) and is movably connected via two symmetrically arranged first pins (544). The upper end of the cylindrical point-casting launching device (543) is arranged on the inner side of the annular connecting member (542) and is movably connected via two symmetrically arranged second pins (545). The outer wall of the lower end of the cylindrical shell (541) is symmetrically provided with three or more threaded adjustment holes, each of which is provided with a stabilizing adjustment bolt (546). The front end of the stabilizing adjustment bolt (546) is in contact with or out of contact with the outer wall of the cylindrical point-casting launching device (543).

8. The beam bottom template laser projection positioning method according to claim 6 is characterized in that: The track ruler assembly (51) comprises a track ruler body (511), two mutually parallel slide rails (512) are provided on the track ruler body (511), and the support base assembly (52) is mounted on the two slide rails (512) for sliding; an intermediate marking line (513) in the same direction as the slide rails (512) is provided between the two slide rails (512), and a point positioning mark (9) formed on the ground by a lower laser beam (8) vertically emitted by a laser projector (5) is located on the intermediate marking line (513). On the track ruler body (511), length scale marks are provided on both sides of the intermediate marking line (513); the zero scale mark of the length scale mark on one side of the intermediate marking line (513) is located at one end of the track ruler body (511), and the zero scale mark of the length scale mark on the other side is located at the center of the track ruler body (511); at least one bubble level device (514) is provided on the track ruler body (511), and at least three height adjustment feet (515) are provided on the lower end surface of the track ruler body (511).

9. The beam bottom template laser projection positioning method according to claim 6, characterized in that: The support base assembly (52) comprises a support base (521) and a support ear plate (522). The support base (521) is mounted on two mutually parallel slide rails (512). Two support ear plates (522) are provided and symmetrically mounted on the support base (521). A shaft (524) is connected between the two support ear plates (522). The annular member (53) is provided between the two support ear plates (522) and is mounted on the shaft (524) through a bearing (523). An adjustment opening is provided on one of the support ear plates (522). An adjustment gear (525) is provided in the adjustment opening and is fixedly mounted on the inner end surface of the other support ear plate (522) through a pin. Transmission teeth provided on the outer periphery of the adjustment gear (525) are meshed with transmission teeth provided on the outer periphery of the annular member (53). An adjustment handle (526) is provided on the outer end surface of the adjustment gear (525).

10. A beam bottom template laser projection positioning method according to claim 9, characterized in that: A vertical marking line A (527) is provided at the center of the outer end surface of the support ear plate (522) provided with an adjustment opening; when the two projection devices (54) are at the same height, a vertical marking line B (528) is provided at the center of the end surface of the ring member (53), and the vertical marking line A (527) and the vertical marking line B (528) are on the same straight line.

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