Adjustment device for installing heavy casing and adjustment method thereof

Abstract

This application relates to the technical field of construction support equipment and discloses an adjustment device for installing heavy-duty casing and an adjustment method thereof. The adjustment device for installing heavy-duty casing includes a first bracket, a second bracket that slides longitudinally on the first bracket, and a third bracket that slides transversely on the second bracket; the first bracket is provided with a fixing assembly that is used for detachable fixed connection with construction steel bars; a longitudinal adjustment assembly is provided between the second bracket and the first bracket, and a transverse adjustment assembly is provided between the third bracket and the second bracket. This application has the advantage of improving the convenience of heavy-duty casing installation.

Description

Technical Field

[0001] The present application relates to the field of building construction support equipment, and in particular to an adjustment device for installing a heavy casing and an adjustment method thereof. Background Art

[0002] In modern medicine, linear accelerators, large medical devices used for cancer radiotherapy, generate X-rays and electron beams during operation. To prevent radiation leakage, the entire linear accelerator room is constructed of massive concrete. Conventional protective walls are up to 1500mm thick. Heavy-duty casings, installed at an angle to the wall, are installed within the protective walls for air and water ducts, with both ends extending out of the wall. To ensure effective radiation protection, these casings must be free of defects and through-hole cracks, and must not be re-drilled or repaired to prevent radiation leakage. Therefore, the heavy-duty casings, installed at the right height and angle within the protective walls, must be installed precisely and securely.

[0003] The current method for installing heavy casing within protective walls involves using a crane to hoist the casing to the installation location, followed by manual alignment and reinforcement. This installation method requires multiple adjustments for the extra-long and heavy casing, and the operating space around the installation location often intersects with the temporary support system, resulting in a narrow working space and limited operation. This results in a labor-intensive and material-intensive installation process, as well as potential safety hazards. Furthermore, when the heavy casing directly presses against the reinforcement within the protective wall, the heavy pressure can cause the reinforcement to bend and deform, compromising installation accuracy. Summary of the Invention

[0004] In order to improve the convenience of installing heavy-duty casing, the present application provides an adjustment device for installing heavy-duty casing and an adjustment method thereof.

[0005] On the one hand, the present application provides an adjustment device for installing a heavy casing, which adopts the following technical solution:

[0006] A device for installing a heavy-duty sleeve includes a first bracket, a second bracket that slides longitudinally on the first bracket, and a third bracket that slides transversely on the second bracket; a fixing assembly is provided on the first bracket, and the fixing assembly is used for detachable and fixed connection with construction steel bars; a longitudinal adjustment assembly is provided between the second bracket and the first bracket, and a transverse adjustment assembly is provided between the third bracket and the second bracket.

[0007] By adopting the above technical solution, the heavy casing adopts an adjustment device to perform horizontal and vertical adjustment, which makes it convenient to adjust the heavy casing to the required position. During use, since the fixing component is detachably fixed to the building steel bars, it is a temporary support structure and can be disassembled and reused.

[0008] Optionally, the fixing assembly includes a sleeve and multiple sets of tightening assemblies arranged on the side wall of the sleeve, the sleeve is fixedly connected to the first bracket, the tightening assembly includes a tightening bolt and a tightening nut, the tightening bolt passes through the side wall of the sleeve, the tightening nut is fixedly connected to the side wall of the sleeve, and the tightening nut is threadedly connected to the tightening bolt.

[0009] By adopting the above technical solution, firstly, the method of fixing the sleeve on the steel bar helps to alleviate the bending caused by the heavy sleeve acting on the steel bar, thereby improving the stability of the adjustment device support and reducing the need for repeated calibration of the heavy sleeve due to steel bar bending. In addition, multiple sets of tightening components are used to achieve a detachable and stable connection between the sleeve and the steel bar, which is convenient and quick to operate.

[0010] Optionally, the longitudinal adjustment assembly includes a height adjustment screw and a positioning nut threadedly connected to the height adjustment screw, the two ends of the height adjustment screw are vertically connected to the first bracket and the second bracket respectively, the nut end of the height adjustment screw is located on the side of the second bracket away from the first bracket, and the positioning nut is fixed on the second bracket.

[0011] By adopting the above technical solution, the positional relationship between the adjusting screw and the first bracket is changed by rotating the adjusting screw, thereby achieving rapid adjustment of the longitudinal displacement.

[0012] Optionally, the longitudinal adjustment assembly also includes a fastening nut, which is movably threadedly connected to the height adjustment screw and is used to fasten the height adjustment screw to the second bracket. The longitudinal adjustment assembly also includes an adjusting nut, which is fixedly connected to the end of the height adjustment screw away from the nut end.

[0013] By adopting the above technical solution, tightening the nut is conducive to firmly connecting the adjusting screw to the second bracket, which is conducive to improving the stability of the entire structure. The adjusting nut facilitates the rotation of the adjusting screw, thereby improving convenience.

[0014] Optionally, the lateral adjustment assembly includes a double-thread screw, a positive-thread nut and a negative-thread nut, the two ends of the double-thread screw are respectively connected laterally to the second bracket and the third bracket, the negative-thread nut is fixedly connected to the second bracket, the positive-thread nut is fixedly connected to the third bracket, and the end of the double-thread screw is fixedly connected with a butterfly nut.

[0015] By adopting the above technical solution and using a double-thread screw, the double-thread screw can be rotated to achieve the approach or distance between the positive-thread nut and the negative-thread nut, that is, the approach or distance between the second bracket and the third bracket in the horizontal direction. Therefore, the lateral position adjustment can be achieved conveniently and quickly; the butterfly nut is conducive to the rotation of the double-thread screw and is easy to operate.

[0016] Optionally, a sliding assembly is further provided between the second bracket and the third bracket, the sliding assembly comprising a pulley and a slide rail, the sliding direction of the slide rail is along the axial direction of the double-thread screw, and the pulley is slidingly connected in the slide rail.

[0017] By adopting the above technical solution, the sliding component is conducive to converting the relative sliding friction between the second bracket and the third bracket into rolling friction, which is conducive to improving the smoothness of lateral displacement, reducing the difficulty of lateral displacement, and extending the service life of the device.

[0018] Optionally, a guide assembly is further provided between the first bracket and the second bracket, at least two groups of limiting holes are provided through the first bracket, and the second bracket is provided with a limiting plate that is slidably connected to the limiting holes on the first bracket.

[0019] By adopting the above technical solution, the limiting hole is conducive to ensuring the stability of the second bracket sliding on the first bracket, and the limiting plate structure is adopted to minimize the tilting of the second bracket relative to the first bracket.

[0020] Optionally, a linkage assembly is further included, which includes a rack plate, on which a rack parallel to the sliding direction of the third bracket is provided, the rack plate is provided on the first bracket, and the rack plate extends toward the third bracket and is used to engage with the butterfly nut; at the same time, the butterfly nut is slidingly connected between two adjacent racks; the rack plate is slidingly connected to the first bracket, and the sliding direction of the rack plate is close to or away from the butterfly nut; when close, the butterfly nut is engaged with the rack plate; when away, the rack plate is not engaged with the butterfly nut.

[0021] By adopting the above technical solution, when the second bracket and the third bracket rise, the butterfly nut is driven to rotate, thereby driving the translation of the third bracket; and a sliding structure is adopted, so that the rack plate can be selected to be linked or not, thereby facilitating quick adjustment.

[0022] Optionally, an L-shaped sliding groove is provided on the first bracket, and a sliding block is provided on the rack plate. The sliding block is slidingly connected in the sliding groove, and the sliding groove includes a first slide perpendicular to the sliding direction of the third bracket, and also includes a second slide parallel to the sliding direction of the third bracket; when the butterfly nut is engaged with the rack plate, the sliding block is located in the second slide.

[0023] By adopting the above technical solution, an L-shaped sliding groove is used to facilitate sliding adjustment, and when the rack plate and the butterfly nut are engaged, the second slide plays a limiting role.

[0024] On the other hand, the present application provides an adjustment method for installing an adjustment device for a heavy casing, which adopts the following technical solution:

[0025] A method for adjusting an adjusting device for installing a heavy casing, based on the above-mentioned adjusting device for installing a heavy casing, comprises the following steps:

[0026] One or more sets of sleeves are placed on the vertical steel bars on the building wall at a set height, and the tightening bolts are tightened so that the tightening bolts are pressed against the side wall of the steel bars;

[0027] Fix the heavy casing above the third bracket, adjust the lateral displacement of the heavy casing by rotating the double-thread screw, and adjust the longitudinal displacement of the heavy casing by rotating the height adjustment screw;

[0028] After the lateral and longitudinal displacements have been adjusted, the positioning of the heavy sleeve is checked again before the formwork is closed. Before pouring the concrete on the building wall, the device is removed from the steel bars by loosening the locking nut.

[0029] By adopting the above technical solution, the device is first installed and positioned, and then the horizontal adjustment component and the longitudinal adjustment component are adjusted so that the heavy casing is located at a more accurate position. After the adjustment is completed, in order to further ensure the accuracy of the position, the position will be confirmed again to ensure the accuracy of the position installation; the structure is streamlined and can be reused, the operation method is simple, and it is conducive to improving construction efficiency and quality.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. By screwing the height adjustment screw and the double-thread screw, the adjustment device is adjusted to offset the deformation caused by the heavy casing pressing on the steel bars in the protective wall. This allows the heavy casing to be fine-tuned in both the horizontal and vertical directions along the vertical surface of the protective wall during installation, effectively improving the installation accuracy of the heavy casing.

[0032] 2. By using screws to tighten instead of traditional manual adjustment, the difficulty of construction in narrow spaces is reduced and the installation process is more convenient;

[0033] 3. When installing heavy casing, four sets of adjustment devices can be used at the same time, and the weight of the heavy casing can be evenly distributed through the adjustment device to avoid deformation of the steel bars in the protective wall due to uneven pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the adjustment device for installing a heavy casing in the present application.

[0035] Figure 2 This is a structural diagram of Example 1 of the adjustment device for installing a heavy casing in the present application, which is mainly used to show the structural schematic diagram of the first bracket.

[0036] Figure 3 This is a structural diagram of Example 1 of the adjustment device for installing a heavy casing in the present application, which is mainly used to show the structural schematic diagram of the lateral adjustment component.

[0037] Figure 4 Structural diagram of embodiment 2 of the adjustment device for installing heavy casing in the present application.

[0038] Figure numerals: 1. first bracket; 11. first base plate; 12. second base plate; 13. third base plate; 2. second bracket; 21. first support plate; 22. second support plate; 23. third support plate; 24. fourth support plate; 25. reinforcement plate; 26. clearance hole; 3. third bracket; 31. first load-bearing plate; 32. second load-bearing plate; 4. fixing assembly; 41. sleeve; 42. tightening bolt; 43. tightening nut; 5. longitudinal adjustment assembly; 51. height adjustment screw; 52. positioning nut; 53. fastening nut; 54. adjusting nut; 6. transverse adjustment assembly; 61. double-thread screw; 62. positive-thread nut; 63. negative-thread nut; 64. butterfly nut; 7. sliding assembly; 71. pulley; 72. slide rail; 8. limiting assembly; 81. limiting hole; 82. limiting plate; 91. rack plate; 92. first slide; 93. second slide DETAILED DESCRIPTION

[0039] The present application will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0040] An embodiment of the present application discloses an adjustment device for installing a heavy casing.

[0041] Example 1

[0042] Reference Figure 1 and Figure 2An adjustment device for installing heavy-duty casing includes a first bracket 1, a second bracket 2 that slides longitudinally on the first bracket 1, and a third bracket 3 that slides transversely on the second bracket 2; a fixing assembly 4 is provided on the first bracket 1, and the fixing assembly 4 is used for detachable fixed connection with structural steel bars; a longitudinal adjustment assembly 5 is provided between the second bracket 2 and the first bracket 1, and a transverse adjustment assembly 6 is provided between the third bracket 3 and the second bracket 2. The heavy-duty casing uses the adjustment device for transverse and longitudinal adjustment, which facilitates adjustment of the heavy-duty casing to the desired position. During use, since the fixing assembly 4 is detachably fixed to the structural steel bars, it is a temporary support structure and can be disassembled and reused.

[0043] Reference Figure 2 and Figure 3 The first bracket 1 has an overall C-shaped plate structure, comprising a first base plate 11, a second base plate 12, and a third base plate 13, all of which are square. The first base plate 11 and the third base plate 13 are arranged in parallel and fixed perpendicularly to the ends of the same side of the length direction of the second base plate 12. To enhance the structural strength of the first bracket 1, reinforcing ribs are fixedly connected at the angles between the first base plate 11, the second base plate 12, and the third base plate 13.

[0044] The fixing assembly 4 is located on the side of the second substrate 12 away from the first substrate 11. The fixing assembly 4 includes a cylindrical sleeve 41 and multiple sets of tightening assemblies installed on the side wall of the sleeve 41. The sleeve 41 is welded to the side of the second substrate 12 away from the first substrate 11, and the axial direction of the sleeve 41 is parallel to the length direction of the second substrate 12. There are multiple sets of tightening assemblies, two of which are distributed in the axial direction of the sleeve 41, and one of which is distributed in the other circumferential directions of the sleeve 41. In this embodiment, the tightening direction of one set of abutting assemblies is perpendicular to the tightening directions of the other two parallel sets of abutting assemblies. Among them, the tightening assembly includes a tightening bolt 42 and a tightening nut 43. The tightening bolt 42 vertically passes through the side wall of the sleeve 41, the tightening nut 43 is welded to the outer wall of the sleeve 41, and the tightening nut 43 is threadedly connected to the tightening bolt 42. When tightening, the tightening bolt 42 is rotated so that the multiple tightening bolts 42 tighten against the side wall of the steel bar from multiple dimensions to ensure a certain degree of stability. Furthermore, the cylindrical sleeve 41 is mounted on the steel bar, which is less likely to bend significantly at the fixing point due to the heavy pressure of the heavy sleeve, thereby improving the stability of the adjustment device support. Furthermore, it helps to improve the accuracy of the position support, thereby minimizing the need for repeated verification of the heavy sleeve position later.

[0045] The second bracket 2 includes a first support plate 21, a second support plate 22, a third support plate 23, and a fourth support plate 24. The first support plate 21 and the second support plate 22 are arranged parallel to each other, and the third support plate 23 is perpendicular to the first and second support plates 21 and 22. The first and second support plates 21 and 22 are fixedly connected to the same side of the third support plate 23 and are located at one end in the longitudinal direction. The fourth support plate 24 is located on the side of the third support plate 23 away from the first support plate 21 and is located at the other end in the longitudinal direction of the fourth support plate 24. To enhance the structural strength of the second bracket 2, a triangular plate-shaped reinforcing rib is fixedly connected at the angle between the third and fourth support plates 23 and 24. A reinforcing plate 25 is connected to both ends of the third and fourth support plates 23 and 24 away from the reinforcing rib. The reinforcing plate 25 forms a triangular structure with the third and fourth support plates 23 and 24. A clearance hole 26 is provided in the reinforcing plate 25 to reduce the weight of the reinforcing plate 25 while ensuring a certain level of structural strength.

[0046] To improve the sliding stability of the first bracket 1 and the second bracket 2, a limiting assembly 8 is provided. The limiting assembly 8 includes a limiting plate 82 and a limiting hole 81 extending through the first and second base plates 11 and 12. The limiting plate 82 is fixedly connected to the ends of the first and second support plates 21 and 22 that are distal from the third support plate 23, and is positioned parallel to the third support plate 23. The limiting plate 82 is inserted into the two limiting holes 81, limiting the sliding of the second bracket 2 on the first bracket 1, preventing the second bracket 2 from tilting or shaking violently, thereby improving the stability of the device.

[0047] The longitudinal adjustment assembly 5 includes a height adjustment screw 51, a positioning nut 52, a fastening nut 53, and an adjustment nut 54 threaded onto the height adjustment screw 51. The height adjustment screw 51 is positioned perpendicular to the first base plate 11. One end of the height adjustment screw 51 passes through the second support plate 22, with the nut end positioned between the first support plate 21 and the second support plate 22. The other end of the height adjustment screw 51 passes through the first base plate 11, and the positioning nut 52 is fixedly mounted to the first base plate 11. The fastening nut 53 is movably threaded onto the height adjustment screw 51 and is located on the side of the second support plate 22 closest to the first base plate 11. It is used to fasten the height adjustment screw 51 to the second support plate 22, thereby improving the overall stability of the structure. The adjustment nut 54 is fixedly mounted on the height adjustment screw 51 and is located on the side of the first base plate 11 closest to the second base plate 12. This facilitates the rotation of the height adjustment screw 51 and improves the efficiency of longitudinal displacement adjustment.

[0048] The third bracket 3 includes a first load-bearing plate 31 and a second load-bearing plate 32. The first load-bearing plate 31 is positioned perpendicular to the first support plate 21. The second load-bearing plate 32 is perpendicular to the first load-bearing plate 31 and is located at the end of the first load-bearing plate 31 away from the first support plate 21. To enhance the structural stability of the third bracket 3, a triangular plate-shaped reinforcing rib is connected at the angle between the first load-bearing plate 31 and the second load-bearing plate 32.

[0049] The lateral adjustment assembly 6 includes a double-threaded screw 61, a positive-threaded nut 62, a negative-threaded nut 63, and a butterfly nut 64. The double-threaded screw 61 has two sections of thread with opposite threads. The double-threaded screw 61 is placed parallel to the first support plate 21 and perpendicular to the third support plate 23. One end of the double-threaded screw 61 passes through the third support plate 23, and the negative-threaded nut 63 is fixedly connected to the third support plate 23. The double-threaded screw 61 is threadedly connected to the negative-threaded nut 63. The other end of the double-threaded screw 61 passes through the first bearing plate 31, and the positive-threaded nut 62 is fixedly connected to the first bearing plate 31. The double-threaded screw 61 is threadedly connected to the positive-threaded nut 62. The butterfly nut 64 is fixedly mounted at the end of the double-threaded screw 61 and is located on the side of the first bearing plate 31 away from the third support plate 23. The butterfly nut 64 facilitates the rotation of the double-threaded screw 61, and the threaded thrust facilitates control of the adjustment range of the adjustment device. During adjustment, the butterfly nut 64 is rotated so that the first load-bearing plate 31 moves closer to or farther from the third support plate 23 , thereby achieving lateral adjustment.

[0050] In order to facilitate the sliding of the third bracket 3 on the second bracket 2, a sliding assembly 7 is further installed between the second bracket 2 and the third bracket 3. The sliding assembly 7 includes a pulley 71 and a slide rail 72. In this embodiment, the slide rail 72 is arranged on the first support plate 21 and the fourth support plate 24 and is distributed along the length direction of the two. There are two groups of pulleys 71, one group is installed on the end of the first support plate close to the first support plate 21, and the other group is installed on the side of the second load-bearing plate 32 close to the fourth support plate 24. Each group of pulleys 71 includes two wheels distributed along the sliding direction perpendicular to the slide rail 72. The slide rail 72 is a raised slide rail 72 located between the two wheels. The slide rail 72 acts as a limiter for the pulley 71. The pulley 71 is used to convert the sliding friction between the second bracket 2 and the third bracket 3 into rolling friction, thereby facilitating the relative sliding of the two, reducing wear on the structure, and extending the service life.

[0051] The implementation principle of an adjustment device for installing a heavy-duty sleeve in an embodiment of the present application is: using adjustment components respectively set in the horizontal and vertical directions, and each dimension only needs to rotate the screw of the corresponding dimension, which is convenient for operation, and also improves the stability of the relative sliding between the first bracket 1 and the second bracket 2 through the limiting component 8; and improves the convenience and stability of the sliding between the third bracket 3 and the second bracket 2 through the sliding component 7.

[0052] Example 2

[0053] Reference Figure 4 , an adjustment device for installing a heavy casing, which has a structure basically the same as that of Example 1, except that a linkage component is additionally provided.

[0054] The linkage assembly includes a rack plate 91, which is arranged perpendicular to the first base plate 11 on the first bracket 1; a plurality of racks parallel to the sliding direction of the third bracket 3 are provided on one side of the rack plate 91, and the racks are located on the side close to the butterfly nut 64. The rack plate 91 extends toward the third bracket 3 and is used to engage with the butterfly nut 64; at the same time, the butterfly nut 64 is slidably connected between two adjacent racks. The rack plate 91 is slidably connected to the first bracket 1, and an L-shaped sliding groove is provided on the first bracket 1. A sliding block is provided on the rack plate 91, and the sliding block is slidably connected in the sliding groove. The sliding groove includes a first slide 92 perpendicular to the sliding direction of the third bracket 3, and also includes a second slide 93 parallel to the sliding direction of the third bracket 3; when the butterfly nut 64 engages with the rack plate 91, the sliding block is located in the second slide 93. The sliding direction of the rack plate 91 is close to or away from the butterfly nut 64; when it is close to, the butterfly nut 64 is engaged with the rack plate 91; when it is away from, the rack plate 91 and the butterfly nut 64 are not engaged.

[0055] The operating principle of the adjustment device for installing a heavy-duty casing according to the present embodiment is as follows: when the second bracket 2 and the third bracket 3 rise, the butterfly nut 64 rotates, thereby driving the translation of the third bracket 3. The sliding structure allows the rack plate 91 to be selectively linked or unlinked, facilitating quick adjustment. An L-shaped sliding groove facilitates sliding adjustment, and when the rack plate 91 and the butterfly nut 64 are engaged, the second slide 93 acts as a limiter.

[0056] This embodiment further discloses an adjustment method for an adjustment device for installing a heavy-duty casing, which is based on the structure of the above-mentioned embodiment 1 of the adjustment device for installing a heavy-duty casing and includes the following steps:

[0057] Before installation, first, according to the height at which the heavy sleeves 41 are to be installed, one or more sets of sleeves 41 are placed on the steel bar, and then the three sets of fastening nuts 43 on each sleeve 41 are tightened so that the fastening bolts 42 are pressed against the side wall of the steel bar;

[0058] Fix the heavy-duty sleeve above the third bracket 3, adjust the lateral displacement of the heavy-duty sleeve by rotating the butterfly nut 64; and adjust the longitudinal displacement of the heavy-duty sleeve by rotating the adjustment nut 54; so that the heavy-duty sleeve is located above the fourth support plate 24;

[0059] After the lateral and longitudinal displacements are adjusted, the positioning of the heavy-duty sleeve is checked again before the formwork is closed to prevent deformation of the structure and new errors in the measured data. The heavy-duty sleeve is installed by welding or other means. Before pouring concrete on the building wall, the device is removed from the steel bar by loosening the locking nut 43.

[0060] The present invention discloses an adjustment method for installing a heavy-duty casing using an adjustment device. The principle behind this method is to use multiple or a single set of adjustment devices to support the heavy-duty casing. The adjustment method is simple, easy to operate, and highly efficient. After use, the device can be removed for subsequent use. The height calibration within the adjustment method ensures the accuracy of the support position, ensuring accurate installation of the heavy-duty casing and improving installation quality.

[0061] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An adjustment device for installing a heavy casing, characterized in that: The invention comprises a first bracket (1), a second bracket (2) longitudinally sliding on the first bracket (1), and a third bracket (3) transversely slidingly connected to the second bracket (2); a fixing assembly (4) is provided on the first bracket (1), and the fixing assembly (4) is used for being detachably fixedly connected to a building steel bar; a longitudinal adjustment assembly (5) is provided between the second bracket (2) and the first bracket (1), and a transverse adjustment assembly (6) is provided between the third bracket (3) and the second bracket (2); The lateral adjustment assembly (6) comprises a double-thread screw (61), a positive-thread nut (62) and a negative-thread nut (63), the two ends of the double-thread screw (61) are respectively connected to the second bracket (2) and the third bracket (3) in a transverse direction, the negative-thread nut (63) is fixedly connected to the second bracket (2), the positive-thread nut (62) is fixedly connected to the third bracket (3), and the end of the double-thread screw (61) is fixedly connected to a butterfly nut (64); A sliding assembly (7) is further provided between the second bracket (2) and the third bracket (3), the sliding assembly (7) comprising a pulley (71) and a slide rail (72), the sliding direction of the slide rail (72) being along the axial direction of the double-thread screw (61), and the pulley (71) being slidably connected in the slide rail (72); The linkage assembly further comprises a rack plate (91), the rack plate (91) being provided with a rack parallel to the sliding direction of the third bracket (3), the rack plate (91) being provided on the first bracket (1), and the rack plate (91) extending toward the third bracket (3) and being used to engage with the butterfly nut (64); at the same time, the butterfly nut (64) is slidingly connected between two adjacent racks; the rack plate (91) is slidingly connected to the first bracket (1), and the sliding direction of the rack plate (91) is close to or away from the butterfly nut (64); when close to, the butterfly nut (64) is engaged with the rack plate (91); when away from, the rack plate (91) is not engaged with the butterfly nut (64); An L-shaped sliding groove is provided on the first bracket (1), and a sliding block is provided on the rack plate (91). The sliding block is slidingly connected in the sliding groove. The sliding groove includes a first slideway (92) perpendicular to the sliding direction of the third bracket (3), and also includes a second slideway (93) parallel to the sliding direction of the third bracket (3); when the butterfly nut (64) is engaged with the rack plate (91), the sliding block is located in the second slideway (93).

2. The adjusting device for installing a heavy casing according to claim 1, characterized in that: The fixing assembly (4) includes a sleeve (41) and a plurality of sets of tightening assemblies arranged on the side wall of the sleeve (41), the sleeve (41) is fixedly connected to the first bracket (1), and the tightening assembly includes a tightening bolt (42) and a tightening nut (43), the tightening bolt (42) passes through the side wall of the sleeve (41), the tightening nut (43) is fixedly connected to the side wall of the sleeve (41), and the tightening nut (43) is threadedly connected to the tightening bolt (42).

3. The adjusting device for installing a heavy casing according to claim 2, characterized in that: The longitudinal adjustment assembly (5) comprises a height adjustment screw (51) and a positioning nut (52) threadedly connected to the height adjustment screw (51), the two ends of the height adjustment screw (51) being vertically connected to the first bracket (1) and the second bracket (2), respectively, the nut end of the height adjustment screw (51) being located on a side of the second bracket (2) away from the first bracket (1), and the positioning nut (52) being fixed to the first bracket (1).

4. The adjusting device for installing a heavy casing according to claim 3, characterized in that: The longitudinal adjustment assembly (5) further includes a fastening nut (53), the fastening nut (53) being movably threadedly connected to the height adjustment screw (51) for fastening the height adjustment screw (51) to the second bracket (2), and the longitudinal adjustment assembly (5) further includes an adjusting nut (54), the adjusting nut (54) being fixedly connected to an end of the height adjustment screw (51) away from the nut end.

5. The adjusting device for installing a heavy casing according to claim 1, characterized in that: A guide assembly is further provided between the first bracket (1) and the second bracket (2); at least two groups of limiting holes (81) are provided through the first bracket (1); and the second bracket (2) is provided with a limiting plate (82) slidably connected to the limiting holes (81) on the first bracket (1).

6. A method for adjusting an adjusting device for installing a heavy casing, based on the adjusting device for installing a heavy casing according to claim 3 or 4, characterized in that: The steps include: One or more sets of sleeves (41) are sleeved at a set height on the vertical steel bars on the building wall, and the tightening bolts (42) are tightened so that the tightening bolts (42) are pressed against the side walls of the steel bars; The heavy casing is fixed above the third bracket (3), and the lateral displacement of the heavy casing is adjusted by rotating the double-thread screw (61), and the longitudinal displacement of the heavy casing is adjusted by rotating the height adjustment screw (51); After the adjustment of the transverse and longitudinal displacements is completed, the positioning of the heavy sleeve is checked again before the template is closed. Before pouring the concrete on the building wall, the device is removed from the steel bar by loosening the locking nut (43).

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