A lifting construction bracket for building hoisting cables

Abstract

The present invention relates to a liftable construction support for building hoisting cables applied in the field of building cable construction, comprising a fixed frame column fixed on a building body at the lower end, a middle frame column slidably connected to the fixed frame column, an upper frame column slidably connected to the middle frame column, a lifting cantilever detachably fixed to the upper end of the upper frame column, and a lifting pulley rotatably installed below the end portion of the lifting cantilever; the upper end of one side of the fixed frame column is fixed with a mounting truss by bolts, the upper end of the mounting truss is installed with an automatic diagonal bracing mechanism, and the middle part of one side of the fixed frame column is installed with a diagonal bracing locking drive, the diagonal bracing locking drive is used to drive the fastener to tighten or loosen. With the above structure, a force-guiding support structure is formed between the lifting cantilever and the fixed frame column before and after the frame body is lifted and adjusted, thereby reducing the probability of the lifting cantilever being bent due to an excessively long force arm or the deformation of the bracket due to the offset of the overall load-bearing point of the bracket, and better meeting the construction needs of building hoisting cables.

Description

Technical Field

[0001] The invention relates to a liftable construction bracket, in particular to a liftable construction bracket for building hoisting cables applied in the field of building cable construction. Background Art

[0002] In the existing technology of high-rise power supply systems, cables are generally laid through cable wells to meet high-rise power supply needs. Generally, expansion bolts and fixed hooks are implanted in the ceiling and floor of the equipment room on the roof layer, and a winch is used to pull the wire rope through the fixed pulley to hoist and lay the vertical power cable.

[0003] After searching, the Chinese patent CN110112681B specification discloses a combined cable lifting and laying auxiliary device, including a horizontal fixing component, a side fixing component, a steel cable fixing cross arm and an anti-sway fixing bracket; the horizontal fixing component and the side fixing component are assembled into a trapezoidal structure frame; the anti-sway fixing bracket is fixed to the upper part of the trapezoidal structure frame and is located on one side of the side fixing component, for fixing the lifting fixed pulley; the steel cable fixing cross arm is fixed to the top of the trapezoidal structure frame and is located above the anti-sway fixing bracket, for lifting the steel cable. The combined cable lifting and laying auxiliary device does not require the use of ceiling and floor structures as fixing points, eliminating the impact of damage to buildings. The lifting frame is designed and manufactured to be stable and reliable, which can avoid hidden dangers such as collapse and is not restricted by the site. The lifting frame is suitable for all installation sites through better horizontal fixing parts, whether it is a narrow cable shaft or an equipment room with dense equipment. The lifting frame is detachable and reusable, thereby reducing construction and installation costs and can be promoted and applied on a large scale.

[0004] Although the existing construction scaffolding is easy to assemble and erect, it needs to be erected differently according to different working height requirements. That is, the higher the construction height, the longer the erection time and the more components are required, and it is not easy to make temporary adjustments after erection (such as when it needs to be hoisted to adjacent different floors or wire pipes at different heights on the same floor), and its use has certain limitations; in addition, the construction scaffolding for hoisting has a cantilever structure. After the general frame is raised, the force arm composed of the cantilever and the frame increases, causing the structural load-bearing point to shift. Therefore, the general lifting frame structure cannot directly adapt to the lifting and adjustment requirements of the building lifting cable construction scaffolding. Summary of the Invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to provide a construction support for a building hoisting cable that can be flexibly adjusted and can form a stable load-bearing structure after adjustment.

[0006] In order to solve the above problems, the present invention provides a lifting construction support for building hoisting cables, comprising a fixed frame column with a lower end fixed to a building body, a middle frame column slidably connected to the fixed frame column, an upper frame column slidably connected to the middle frame column, a lifting cantilever detachably fixed to the upper end of the upper frame column, and a lifting pulley rotatably installed below the end of the lifting cantilever;

[0007] The fixed frame column, the middle frame column and the upper frame column are all equipped with lifting pulleys, and a steel wire rope is wound around the lifting pulley. The lower end of the fixed frame column is fixed with a mounting plate, and the mounting plate is fixed with a lifting drive mechanism for retracting and releasing the steel wire rope.

[0008] When the lifting drive mechanism reels the wire rope, the middle and upper frame columns are forced to rise upward; when the lifting drive mechanism releases the wire rope, the middle and upper frame columns descend under their own weight;

[0009] The upper end of one side of the fixed frame column is fixed with a mounting truss by bolts, and the upper end of the mounting truss is installed with an automatic diagonal bracing mechanism, which includes a first tooth plate, a second tooth plate, an elastic tensioning member and a fastener. The lower end of the first tooth plate is rotatably connected to the upper end of the mounting truss, and the upper end of the second tooth plate is rotatably connected to the side wall of the lifting cantilever. The second tooth plate is engaged with the tooth portion of the first tooth plate;

[0010] The elastic tensioning member is slidably mounted on the first tooth plate and the second tooth plate, and the elastic tensioning member applies a prestress to the first tooth plate and the second tooth plate to move them closer to each other;

[0011] The fastener is installed at the lower end of the second tooth plate, and when the fastener is tightened, the first tooth plate and the second tooth plate are tightly fixed;

[0012] A diagonal brace locking drive is installed in the middle of one side of the fixed frame column, and the diagonal brace locking drive is used to drive the fastener to tighten or loosen.

[0013] In the above-mentioned building hoisting cable liftable construction support, after the construction support is installed, the staff can reel in or unreel the wire rope through the lifting drive mechanism. When the wire rope is reeled in, the middle frame column and the upper frame column are forced to rise upward under the cooperation of the wire rope and the lifting pulley. When the wire rope is unreeled, the middle frame column and the upper frame column descend under the action of their own weight, thereby achieving the purpose of adjusting the height of the hoisting cantilever, thereby making the construction support more convenient to adjust, and there is no need to assemble multiple parts according to the required hoisting height during installation, which saves assembly time and has a wider range of applications and is convenient to use.

[0014] In addition, during the lifting and lowering of the middle and upper frame columns, the second tooth plate rises and falls with the lifting of the lifting cantilever, so that the first tooth plate and the second tooth plate produce relative movement, and can remain parallel under the action of the elastic tensioning member, and can ensure that the two are parallel to each other and will not completely separate during the relative movement. After the adjustment is completed, it is only necessary to tighten the fasteners through the diagonal support locking drive to make the first tooth plate and the second tooth plate tightly fixed, forming a diagonal support structure that is adapted to the height of the lifting cantilever.

[0015] As a further supplement to this application, the fastener includes:

[0016] A movable limiting plate is slidably attached to a side of the first tooth plate away from the second tooth plate, and a hanging bolt is fixed to one side of the movable limiting plate;

[0017] A fixed plate, the fixed plate is fixed to a side of the second tooth plate away from the first tooth plate, a side wall of the fixed plate is rotatably connected to a fastening pulley, and the fixed plate is located at the lower end of the second tooth plate;

[0018] A guide post, one end of which is fixed to the side of the movable limiting plate close to the fixed plate, and the other end of which slides through the fixed plate and is formed with a limiting block to prevent the guide post from separating from the fixed plate;

[0019] Among them, another steel wire rope is provided on the fixing bolt of the hanging bolt, and the other steel wire rope is wound around the tightening pulley once and then enters the winding end of the diagonal support locking drive.

[0020] As a further supplement to the present application, long embedding grooves are provided on the first tooth plate and the second tooth plate, and the elastic tensioning member includes a hanging column and a tension spring. One end of the hanging column is slidably embedded in the long embedding groove, and the other end of the hanging column is perpendicular to the side wall of the first tooth plate. The two ends of the second tooth plate are respectively hung in the annular hanging grooves of the two hanging columns.

[0021] As a further supplement to the present application, the cross-sections of the teeth of the first tooth plate and the second tooth plate are both isosceles triangles protruding outward and meshing with each other, and the length of the first tooth plate is greater than the length of the second tooth plate;

[0022] When the middle shelf column and the upper shelf column are retracted, the upper end of the first tooth plate extends to above the lifting cantilever.

[0023] As a further supplement to the present application, two groups of automatic diagonal bracing mechanisms are provided, and the two groups of automatic diagonal bracing mechanisms are respectively provided on both sides of the hoisting cantilever, and the two groups of automatic diagonal bracing mechanisms are symmetrically arranged along the middle of the fixed frame column;

[0024] A first axis frame is integrally formed on both sides of the lifting cantilever, and the upper end of the second tooth plate is rotatably connected to the first axis frame through a rotating shaft. A second axis frame is integrally formed on the upper part of both ends of the installation truss, and the lower end of the first tooth plate is rotatably connected to the second axis frame through a rotating shaft.

[0025] As a further supplement to this application, a mounting frame is fixed to the upper end of the upper frame column, and a fixing hoop plate is fixed to the lower end of the lifting cantilever by bolts. The fixing hoop plate is arranged on the mounting frame, and one end of the lifting cantilever fixing hoisting frame extends to the outside of the fixed frame column.

[0026] As a further supplement to the present application, a first sliding groove is provided on one side of the fixed frame column, and a first limiting groove is provided on the inner side wall of the first sliding groove;

[0027] One side of the middle frame column is slidably embedded in the first sliding groove, and a first protrusion is integrally formed on the side of the middle frame column embedded in the first sliding groove. The first protrusion is slidably embedded in the first limiting groove. A second sliding groove is provided on the side of the middle frame column away from the fixed frame column, and a second limiting groove is provided inside the second sliding groove;

[0028] One side of the upper frame column is slidably embedded in the second sliding groove, and a second protrusion is integrally formed on one side of the upper frame column embedded in the second sliding groove, and the second protrusion is slidably embedded in the second limiting groove;

[0029] The upper ends of the first sliding groove and the second sliding groove are both open, and the upper ends of the first limiting groove and the second limiting groove are both closed.

[0030] As a further supplement to the present application, multiple lifting pulleys are installed and located on the same side of the fixed frame column, the middle frame column, and the upper frame column. Two lifting pulleys are installed on each of the fixed frame column, the middle frame column, and the upper frame column, and the multiple lifting pulleys are located at the upper and lower ends of the fixed frame column, the middle frame column, and the upper frame column respectively.

[0031] One end of the steel wire rope corresponding to the lifting pulley is fixed to the lifting pulley at the lower end of the fixed frame column, and the other end of the steel wire rope is successively wound above the lifting pulley at the upper end of the fixed frame column, below the lifting pulley at the lower end of the middle frame column, above the lifting pulley at the upper end of the middle frame column, below the lifting pulley at the lower end of the upper frame column, and above the lifting pulley at the upper end of the upper frame column, and then enters the winding end of the lifting drive mechanism;

[0032] Among them, a lifting pulley for reversing is also rotatably installed above the mounting plate at the bottom of the fixed frame column, so that after the wire rope passes around the lifting pulley above the upper frame column, it turns to the horizontal under the action of the reversing lifting pulley and enters the winding end of the lifting drive mechanism.

[0033] As a further supplement to the present application, the lifting drive mechanism includes a first motor and a first reel. The first motor is fixed on the mounting plate. The output shaft of the first motor extends horizontally and is transmission-connected to the input end of the planetary reducer. The first reel is transmission-connected to the output end of the planetary reducer through a rotating shaft. The end of the wire rope wound on the lifting pulley is wound on the first reel.

[0034] As a further supplement to the present application, the diagonal brace locking drive includes a second motor and a second reel. The second motor is fixed to the diagonal brace bracket on one side of the fixed frame column. The output shaft of the second motor also extends horizontally and is transmission-connected to the input end of the planetary reducer. The second reel is transmission-connected to the output end of the planetary reducer through a rotating shaft, and the end of the wire rope wound on the tightening pulley is wound on the second reel.

[0035] In summary, during the lifting and lowering process of the middle frame column and the upper frame column, the second tooth plate rises and falls with the lifting and lowering of the lifting cantilever, so that the first tooth plate and the second tooth plate produce relative movement, and can remain parallel under the action of the elastic tensioning member, and can ensure that the two are parallel to each other and will not completely separate during the relative movement. After the adjustment is completed, it is only necessary to tighten the fastener by driving the diagonal support locking drive to make the first tooth plate and the second tooth plate tightly fixed, forming a diagonal support structure adapted to the height of the lifting cantilever. In this way, before and after the frame body is lifted and lowered, a force-conducting support structure can be formed between the lifting cantilever and the fixed frame column, so that the force borne by the lifting cantilever is stably transmitted to the upper end of the fixed frame column by the first tooth plate and the second tooth plate, always forming a stable load-bearing point, and providing a stable and reliable support structure for the lifting cantilever when the force arm increases, reducing the probability of the lifting cantilever bending itself due to the excessive length of the force arm, or causing the overall load-bearing point of the bracket to shift and cause the bracket to deform, ensuring the structural stability and reliability of the cable construction bracket after adjustment, and being able to better meet the construction needs of building lifting cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of the present application;

[0037] Figure 2 Schematic diagram of the fixed frame column side end and the installation truss, automatic diagonal bracing mechanism, and diagonal bracing locking drive structure according to the embodiment of the present application;

[0038] Figure 3 This is a schematic side view of the structure of the fixing frame column according to the embodiment of the present application;

[0039] Figure 4 This is a partial enlarged view of the automatic diagonal bracing mechanism according to an embodiment of the present application;

[0040] Figure 5 This is a schematic diagram of the fastener structure according to an embodiment of the present application;

[0041] Figure 6 This is a schematic diagram of the winding structure of the steel rope and the lifting pulley according to the embodiment of the present application;

[0042] Figure 7 A cross-sectional view of a fixed frame column, a middle frame column, and an upper frame column according to an embodiment of the present application;

[0043] Figure 8This is a schematic diagram of the upward axis structure of the upper frame column and the hanging cantilever of the embodiment of this application.

[0044] Description of the numbers in the figure:

[0045] 1. Fixed column; 101. First chute; 102. First limiting slot; 2. Middle column; 201. Second chute; 202. Second limiting slot; 203. First protrusion; 3. Upper column; 301. Second protrusion; 302. Mounting frame; 4. Lifting cantilever; 401. First axis frame; 402. Lifting frame; 403. Fixed hoop; 5. Lifting pulley; 6. Mounting truss; 601. Second axis frame; 7. Automatic diagonal bracing mechanism; 701. First tooth plate; 702. Second tooth plate; 703, elastic tensioning member; 7031, hanging column; 7032, tension spring; 704, fastener; 7041, movable limit plate; 7042, fixed plate; 7043, guide column; 7044, hanging bolt; 7045, fastening pulley; 705, long embedded groove; 8, lifting drive mechanism; 801, first motor; 802, first reel; 9, diagonal support locking drive; 901, second motor; 902, second reel; 10, lifting pulley; 11, wire rope. DETAILED DESCRIPTION

[0046] The following describes the implementation of the present application in detail with reference to the accompanying drawings.

[0047] Implementation method:

[0048] The present invention provides a construction support that can be lifted and lowered for hoisting cables. Figure 1-Figure 4 、 Figure 8 , including a fixed frame column 1 with its lower end fixed to the building, a middle frame column 2 slidably connected to the fixed frame column 1, an upper frame column 3 slidably connected to the middle frame column 2, a hanging cantilever 4 detachably fixed to the upper end of the upper frame column 3, and a hanging pulley 5 rotatably installed below the end of the hanging cantilever 4, wherein diagonal braces or transverse braces made of section steel are installed around the fixed frame column 1, the front and rear sides of the middle frame column 2, and the front and rear sides of the upper frame column 3 to enhance the structural stability of the entire construction support;

[0049] The fixed frame column 1, the middle frame column 2, and the upper frame column 3 are all equipped with a lifting pulley 10, and a steel wire rope 11 is wound around the lifting pulley 10. A mounting plate is fixed to the lower end of the fixed frame column 1, and a lifting drive mechanism 8 for retracting and releasing the steel wire rope 11 is fixed to the mounting plate;

[0050] When the lifting drive mechanism 8 reels the steel wire rope 11, the middle frame column 2 and the upper frame column 3 are forced to rise upward; when the lifting drive mechanism 8 releases the steel wire rope 11, the middle frame column 2 and the upper frame column 3 descend under their own weight;

[0051] The upper end of one side of the fixed frame column 1 is fixed with a mounting truss 6 by bolts, and the upper end of the mounting truss 6 is installed with an automatic diagonal bracing mechanism 7, which includes a first tooth plate 701, a second tooth plate 702, an elastic tensioning member 703 and a fastener 704. The lower end of the first tooth plate 701 is rotatably connected to the upper end of the mounting truss 6, and the upper end of the second tooth plate 702 is rotatably connected to the side wall of the hanging cantilever 4. The second tooth plate 702 is engaged with the teeth of the first tooth plate 701;

[0052] The elastic tensioning member 703 is slidably mounted on the first tooth plate 701 and the second tooth plate 702 , and the elastic tensioning member 703 applies a prestress to the first tooth plate 701 and the second tooth plate 702 to move them closer to each other;

[0053] The fastener 704 is installed at the lower end of the second tooth plate 702. When the fastener 704 is tightened, the first tooth plate 701 and the second tooth plate 702 are tightly fixed.

[0054] A diagonal brace locking driver 9 is installed in the middle of one side of the fixed frame column 1. The diagonal brace locking driver 9 is used to drive the fastener 704 to tighten or loosen.

[0055] Depend on Figure 1-Figure 3 It can be seen that there are four groups of fixed frame columns 1, middle frame columns 2 and upper frame columns 3 and they are symmetrically distributed at intervals. The two fixed frame columns 1, two middle frame columns 2 and two upper frame columns 3 in the front and rear groups of fixed frame columns 1, middle frame columns 2 and upper frame columns 3 are respectively fixed by diagonal braces or transverse braces. During installation, it is only necessary to anchor the four fixed frame columns 1 of the front and rear groups to the floor slab with expansion bolts, and then use diagonal braces or transverse braces to connect and fix the front and rear groups of fixed frame columns 1, and then fix the lifting cantilever 4 equipped with a lifting pulley 5 above the upper frame column 3, and wrap the wire rope 11 around the lifting pulley 10, fastener 704, diagonal brace locking drive 9 and lifting drive mechanism 8 to complete the installation.

[0056] Based on the above structure, after the construction support is installed, the staff can reel in or unreel the wire rope 11 through the lifting drive mechanism 8. When the wire rope 11 is reeled in, the middle frame column 2 and the upper frame column 3 are forced to rise upward under the cooperation of the wire rope 11 and the lifting pulley 10. When the wire rope 11 is unreeled, the middle frame column 2 and the upper frame column 3 descend under the action of their own weight, thereby achieving the purpose of adjusting the height of the hanging cantilever 4, thereby making the construction support more convenient to adjust, and there is no need to assemble multiple parts according to the required height of the hanging during installation, which saves assembly time and has a wider range of applications and is convenient to use.

[0057] In addition, during the lifting and lowering process of the middle frame column 2 and the upper frame column 3, the second tooth plate 702 rises and falls with the lifting of the lifting cantilever 4, so that the first tooth plate 701 and the second tooth plate 702 produce relative movement, and can remain parallel under the action of the elastic tensioning member 703, and can ensure that the two are parallel to each other and will not completely separate during the relative movement. After the adjustment is completed, it is only necessary to tighten the fastener 704 through the diagonal support locking drive 9, so that the first tooth plate 701 and the second tooth plate 702 can be tightly fixed, forming a diagonal support structure that is highly adapted to the lifting cantilever 4, so that Before and after the frame is raised and lowered, a force-conducting support structure is formed between the lifting cantilever 4 and the fixed frame column 1, so that the force borne by the lifting cantilever 4 is stably transmitted to the upper end of the fixed frame column 1 by the first tooth plate 701 and the second tooth plate 702, always forming a stable load-bearing point, and providing a stable and reliable support structure for the lifting cantilever 4 when the force arm increases, reducing the probability of the lifting cantilever 4 bending itself due to the excessive length of the force arm, or causing the overall load-bearing point of the bracket to shift and cause the bracket to deform, thereby ensuring the structural stability and reliability of the cable construction bracket after adjustment, and being able to better adapt to the construction needs of building lifting cables.

[0058] Further, Figure 3 and Figure 5 As shown, the fastener 704 comprises:

[0059] A movable limiting plate 7041 is slidably attached to a side of the first tooth plate 701 away from the second tooth plate 702 , and a hook 7044 is fixed to one side of the movable limiting plate 7041 ;

[0060] The fixing plate 7042 is fixed to the side of the second tooth plate 702 away from the first tooth plate 701. The side wall of the fixing plate 7042 is rotatably connected to the fastening pulley 7045, and the fixing plate 7042 is located at the lower end of the second tooth plate 702;

[0061] A guide post 7043, one end of which is fixed to the side of the movable limiting plate 7041 close to the fixed plate 7042, and the other end of the guide post 7043 slides through the fixed plate 7042 and forms a limit block to prevent the guide post 7043 from separating from the fixed plate 7042;

[0062] Among them, another steel wire rope 11 is provided on the fixing bolt of the hanging bolt 7044, and the other steel wire rope 11 is wound around the tightening pulley 7045 once and then enters the winding end of the diagonal support locking drive 9.

[0063] When the diagonal support locking drive 9 is started and another steel wire rope 11 is wound, the steel wire rope 11 is tightened and pulls the hook bolt 7044 toward the tightening pulley 7045, thereby driving the movable limit plate 7041 to approach the fixed plate 7042, and finally making the movable limit plate 7041 cooperate with the fixed plate 7042 to clamp the first tooth plate 701 and the second tooth plate 702, realizing the engagement and fixation of the first tooth plate 701 and the second tooth plate 702, forming an inclined support body of fixed length, providing stable force transmission support for the lifting cantilever 4, and ensuring the stability and reliability of the lifting cantilever 4.

[0064] Further, Figure 2 and Figure 4 As shown, a long embedding groove 705 is provided on the first tooth plate 701 and the second tooth plate 702, and the elastic tensioning member 703 includes a hanging column 7031 and a tension spring 7032. One end of the hanging column 7031 is slidably embedded in the long embedding groove 705, and the other end of the hanging column 7031 is perpendicular to the side wall of the first tooth plate 701. The two ends of the second tooth plate 702 are respectively hung in the annular hanging grooves of the two hanging columns 7031.

[0065] By setting the hanging column 7031 and the tension spring 7032, when the first tooth plate 701 and the second tooth plate 702 move relative to each other, the two hanging columns 7031 approach each other under the elastic force of the tension spring 7032 and move relative to each other along the long embedded groove 705, so that the two hanging columns 7031 always maintain a fixed (within a certain range) spacing, thereby applying a prestressed force to the first tooth plate 701 and the second tooth plate 702 to move closer to each other, so that when the teeth of the first tooth plate 701 and the second tooth plate 702 are pressed against each other and separated, the two can still approach each other and engage again to avoid separation. When used in conjunction with the fastener 704, the first tooth plate 701 and the second tooth plate 702 can be limited in all directions, thereby ensuring the stability of the two during relative movement.

[0066] Figure 1-Figure 4 As shown, the cross-sections of the teeth of the first tooth plate 701 and the second tooth plate 702 are both isosceles triangles protruding outward and meshing with each other. The length of the first tooth plate 701 is greater than that of the second tooth plate 702, thereby forming a stable force transmission support structure over a large height difference;

[0067] When the middle shelf column 2 and the upper shelf column 3 are retracted, the upper end of the first tooth plate 701 extends above the hanging cantilever 4;

[0068] There are two sets of automatic diagonal bracing mechanisms 7, which are respectively arranged on both sides of the hoisting cantilever 4, and the two sets of automatic diagonal bracing mechanisms 7 are symmetrically arranged along the middle of the fixed frame column 1;

[0069] A first axis frame 401 is integrally formed on both sides of the lifting cantilever 4, and the upper end of the second tooth plate 702 is rotatably connected to the first axis frame 401 through a rotating shaft. A second axis frame 601 is integrally formed on the upper part of both ends of the mounting truss 6, and the lower end of the first tooth plate 701 is rotatably connected to the second axis frame 601 through a rotating shaft.

[0070] Further, Figure 8 As shown, a mounting frame 302 is fixed to the upper end of the upper frame column 3, and a fixing hoop plate 403 is fixed to the lower end of the lifting cantilever 4 by bolts. The fixing hoop plate 403 is arranged on the mounting frame 302, and one end of the lifting cantilever 4 fixing the lifting frame 402 extends to the outside of the fixed frame column 1.

[0071] Further, Figure 3 、 Figure 6 、 Figure 7 As shown, a first sliding groove 101 is opened on one side of the fixed frame column 1, and a first limiting groove 102 is opened on the inner side wall of the first sliding groove 101;

[0072] One side of the middle frame column 2 is slidably embedded in the first slide groove 101. A first protrusion 203 is integrally formed on the side of the middle frame column 2 embedded in the first slide groove 101. The first protrusion 203 is slidably embedded in the first limiting groove 102. A second slide groove 201 is opened on the side of the middle frame column 2 away from the fixed frame column 1. A second limiting groove 202 is opened inside the second slide groove 201.

[0073] One side of the upper frame column 3 is slidably embedded in the second sliding groove 201. A second protrusion 301 is integrally formed on one side of the upper frame column 3 embedded in the second sliding groove 201. The second protrusion 301 is slidably embedded in the second limiting groove 202.

[0074] The upper ends of the first chute 101 and the second chute 201 are both open, and the upper ends of the first limiting groove 102 and the second limiting groove 202 are both closed;

[0075] There are multiple lifting pulleys 10 installed and located on the same side of the fixed frame column 1, the middle frame column 2, and the upper frame column 3. Two lifting pulleys 10 are installed on each of the fixed frame column 1, the middle frame column 2, and the upper frame column 3, and the multiple lifting pulleys 10 are located at the upper and lower ends of the fixed frame column 1, the middle frame column 2, and the upper frame column 3 respectively;

[0076] One end of the steel wire rope 11 corresponding to the lifting pulley 10 is fixed to the lifting pulley 10 at the lower end of the fixed frame column 1, and the other end of the steel wire rope 11 is successively wound above the lifting pulley 10 at the upper end of the fixed frame column 1, below the lifting pulley 10 at the lower end of the middle frame column 2, above the lifting pulley 10 at the upper end of the middle frame column 2, below the lifting pulley 10 at the lower end of the upper frame column 3, and above the lifting pulley 10 at the upper end of the upper frame column 3, and then enters the winding end of the lifting drive mechanism 8;

[0077] Among them, a lifting pulley 10 for reversing is also rotatably installed above the mounting plate at the bottom of the fixed frame column 1, so that the wire rope 11 is turned to be horizontal under the action of the reversing lifting pulley 10 after passing around the lifting pulley 10 above the upper frame column 3 and enters the winding end of the lifting drive mechanism 8.

[0078] When the wire rope 11 is tightened, a section of the wire rope 11 located between the upper end of the fixed frame column 1 and the lower end of the middle frame column 2, and a section of the wire rope 11 located between the upper end of the middle frame column 2 and the lower end of the upper frame column 3 are respectively wound up, resulting in the length of the two sections of the wire rope 11 being shortened, thereby driving the middle frame column 2 and the upper frame column 3 to rise under the action of tension. When the wire rope 11 is relaxed, a section of the wire rope 11 located between the upper end of the fixed frame column 1 and the lower end of the middle frame column 2, and a section of the wire rope 11 between the upper end of the middle frame column 2 and the lower end of the upper frame column 3 are both relaxed, thereby increasing the length of the two sections of the wire rope 11, thereby descending under the action of the dead weight of the middle frame column 2, the upper frame column 3 and the lifting cantilever 4, thereby achieving the effect of adjusting the overall height of the construction support.

[0079] Further, Figure 1-Figure 3 、 Figure 6 As shown, the lifting drive mechanism 8 includes a first motor 801 and a first reel 802. The first motor 801 is fixed to the mounting plate. The output shaft of the first motor 801 extends horizontally and is transmission-connected to the input end of the planetary reducer. The first reel 802 is transmission-connected to the output end of the planetary reducer via a rotating shaft. The end of the wire rope 11 wound around the lifting pulley 10 is wound around the first reel 802.

[0080] The diagonal brace locking drive 9 includes a second motor 901 and a second reel 902. The second motor 901 is fixed to the diagonal brace bracket on one side of the fixed frame column 1. The output shaft of the second motor 901 also extends horizontally and is transmission-connected to the input end of the planetary reducer. The second reel 902 is transmission-connected to the output end of the planetary reducer through a rotating shaft. The end of the wire rope 11 wound around the tightening pulley 7045 is wound around the second reel 902.

[0081] After the first motor 801 is started, the output shaft end of the first motor 801 drives the first reel 802 to rotate through the planetary reducer. When the first reel 802 rotates, it reels or loosens the wire rope 11, so as to achieve the purpose of driving the middle frame column 2, the upper frame column 3 and the lifting cantilever 4 to rise and fall; when the second motor 901 is started, the output shaft of the second motor 901 also drives the second reel 902 to rotate through the planetary reducer. When the second reel 902 rotates, it drives the wire rope 11 wound on the fastening pulley 7045 to reel or loosen, so as to achieve the effect of driving the movable limit plate 7041 and the fixed plate 7042 to approach each other or releasing the tension limit on both.

[0082] Finally, it should be noted that the commonly used equipment in this application should be reasonably selected, assembled and used according to the technical means required to be implemented in this application. For example, the first motor 801 adopts a servo motor with a locked shaft in the existing technology (models such as 80ST-07530, 80ST-07320 and 80ST-10025 launched by Star Company can be used) to achieve the purpose of stabilizing the frame structure after lifting and lowering adjustment, while the second motor 901 adopts a servo motor that can switch between locked and non-locked shafts (such as Siemens 1FT7 series, Bosch Rexroth MSK series, Lenz MCS series, etc.), and the planetary reducer can adopt a reducer commonly used in the existing technology and suitable for this embodiment (such as the PWZT planetary reducer developed and produced by Hubei Planetary Transmission Equipment Co., Ltd.), preferably in exchange for a larger torque to achieve stable traction. The wire rope adopts a wire rope with a diameter of 6-45mm (6 (strands) × 19 (wires) or 6 (strands) × 37 (wires)) to achieve better use effect.

[0083] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A construction support for lifting cables for a building, comprising a fixed frame column (1) whose lower end is fixed to a building, a middle frame column (2) slidably connected to the fixed frame column (1), an upper frame column (3) slidably connected to the middle frame column (2), a lifting cantilever (4) detachably fixed to the upper end of the upper frame column (3), and a lifting pulley (5) rotatably mounted below the end of the lifting cantilever (4), characterized in that: The fixed frame column (1), the middle frame column (2), and the upper frame column (3) are all equipped with lifting pulleys (10), and a steel wire rope (11) is wound around the lifting pulley (10). A mounting plate is fixed to the lower end of the fixed frame column (1), and a lifting drive mechanism (8) for retracting and releasing the steel wire rope (11) is fixed to the mounting plate. When the lifting drive mechanism (8) reels the steel wire rope (11), the middle-layer frame column (2) and the upper-layer frame column (3) are forced to rise upward, and when the lifting drive mechanism (8) releases the steel wire rope (11), the middle-layer frame column (2) and the upper-layer frame column (3) descend under the action of their own weight; The upper end of one side of the fixed frame column (1) is fixed with a mounting truss (6) by bolts, and the upper end of the mounting truss (6) is installed with an automatic diagonal bracing mechanism (7), and the automatic diagonal bracing mechanism (7) comprises a first tooth plate (701), a second tooth plate (702), an elastic tensioning member (703) and a fastener (704), the lower end of the first tooth plate (701) is rotatably connected to the upper end of the mounting truss (6), the upper end of the second tooth plate (702) is rotatably connected to the side wall of the hanging cantilever (4), and the teeth of the second tooth plate (702) and the first tooth plate (701) are snap-fitted; The elastic tensioning member (703) is slidably mounted on the first tooth plate (701) and the second tooth plate (702), and the elastic tensioning member (703) applies a prestress to the first tooth plate (701) and the second tooth plate (702) to move them closer to each other; The fastener (704) is installed at the lower end of the second tooth plate (702), and when tightened, the fastener (704) enables the first tooth plate (701) and the second tooth plate (702) to be tightly fixed; A diagonal brace locking drive (9) is installed in the middle of one side of the fixed frame column (1), and the diagonal brace locking drive (9) is used to drive the fastener (704) to tighten or loosen.

2. A lifting and lowering construction support for building hoisting cables according to claim 1, characterized in that: The fastener (704) comprises: a movable limiting plate (7041), the movable limiting plate (7041) being slidably attached to a side of the first tooth plate (701) away from the second tooth plate (702), and a hanging bolt (7044) being fixed to one side of the movable limiting plate (7041); a fixed plate (7042), the fixed plate (7042) being fixed to a side of the second tooth plate (702) away from the first tooth plate (701), the side wall of the fixed plate (7042) being rotatably connected to a fastening pulley (7045), and the fixed plate (7042) being located at the lower end of the second tooth plate (702); a guide post (7043), one end of the guide post (7043) being fixed to a side of the movable limiting plate (7041) close to the fixed plate (7042), and the other end of the guide post (7043) slidingly passing through the fixed plate (7042) and forming a limiting block for preventing the guide post (7043) from separating from the fixed plate (7042); Wherein, the fixing bolt on the hanging bolt (7044) is provided with another steel wire rope (11), and the other steel wire rope (11) is wound around the tightening pulley (7045) once and then enters the winding end of the diagonal support locking drive (9).

3. The liftable construction support for building hoisting cables according to claim 2, characterized in that: The first tooth plate (701) and the second tooth plate (702) are both provided with a long embedding groove (705), and the elastic tensioning member (703) includes a hanging column (7031) and a tension spring (7032), one end of the hanging column (7031) is slidably embedded in the long embedding groove (705), and the other end of the hanging column (7031) is perpendicular to the side wall of the first tooth plate (701), and the two ends of the second tooth plate (702) are respectively hung in the annular hanging grooves of the two hanging columns (7031).

4. The liftable construction support for building hoisting cables according to claim 2, characterized in that: The cross-sections of the teeth of the first tooth plate (701) and the second tooth plate (702) are both isosceles triangles protruding outwards and meshing with each other, and the length of the first tooth plate (701) is greater than the length of the second tooth plate (702); When the middle shelf column (2) and the upper shelf column (3) are retracted, the upper end of the first tooth plate (701) extends above the hanging cantilever (4).

5. The liftable construction bracket for building hoisting cables according to claim 1, characterized in that: The automatic diagonal bracing mechanism (7) is provided with two groups, and the two groups of the automatic diagonal bracing mechanism (7) are respectively provided on both sides of the hanging cantilever (4), and the two groups of the automatic diagonal bracing mechanism (7) are symmetrically provided along the middle of the fixed frame column (1); Both sides of the hoisting cantilever (4) are integrally formed with a first axis frame (401), the upper end of the second tooth plate (702) is rotatably connected to the first axis frame (401) via a rotating shaft, and the upper parts of both ends of the mounting truss (6) are integrally formed with a second axis frame (601), and the lower end of the first tooth plate (701) is rotatably connected to the second axis frame (601) via a rotating shaft.

6. The liftable construction support for building hoisting cables according to claim 1, characterized in that: The upper end of the upper frame column (3) is fixed with a mounting frame (302), and the lower end of the hanging cantilever (4) is fixed with a fixing hoop plate (403) by means of bolts. The fixing hoop of the fixing hoop plate (403) is arranged on the mounting frame (302), and one end of the hanging cantilever (4) fixing the hanging frame (402) extends to the outside of the fixed frame column (1).

7. A liftable construction support for building hoisting cables according to any one of claims 1 to 6, characterized in that: A first sliding groove (101) is provided on one side of the fixed frame column (1), and a first limiting groove (102) is provided on the inner side wall of the first sliding groove (101); One side of the middle frame column (2) is slidably embedded in the first sliding groove (101), and a first protrusion (203) is integrally formed on the side of the middle frame column (2) embedded in the first sliding groove (101), and the first protrusion (203) is slidably embedded in the first limiting groove (102). A second sliding groove (201) is provided on the side of the middle frame column (2) away from the fixed frame column (1), and a second limiting groove (202) is provided inside the second sliding groove (201); One side of the upper frame column (3) is slidably embedded in the second slide groove (201), and the side of the upper frame column (3) embedded in the second slide groove (201) is integrally formed with a second protrusion (301), and the second protrusion (301) is slidably embedded in the second limiting groove (202); The upper ends of the first sliding groove (101) and the second sliding groove (201) are both open, and the upper ends of the first limiting groove (102) and the second limiting groove (202) are both closed.

8. The liftable construction support for building hoisting cables according to claim 7, characterized in that: The lifting pulleys (10) are installed in plurality and are located on the same side of the fixed frame column (1), the middle frame column (2), and the upper frame column (3); two lifting pulleys (10) are respectively installed on the fixed frame column (1), the middle frame column (2), and the upper frame column (3); and the plurality of lifting pulleys (10) are respectively located at the upper and lower ends of the fixed frame column (1), the middle frame column (2), and the upper frame column (3); One end of a steel wire rope (11) corresponding to the lifting pulley (10) is fixed to the lifting pulley (10) at the lower end of the fixed frame column (1), and the other end of the steel wire rope (11) is sequentially wound above the lifting pulley (10) at the upper end of the fixed frame column (1), below the lifting pulley (10) at the lower end of the middle frame column (2), above the lifting pulley (10) at the upper end of the middle frame column (2), below the lifting pulley (10) at the lower end of the upper frame column (3), and above the lifting pulley (10) at the upper end of the upper frame column (3), and then enters the winding end of the lifting drive mechanism (8); A lifting pulley (10) for reversing is rotatably installed above the mounting plate at the bottom of the fixed frame column (1), so that the steel wire rope (11) turns horizontally under the action of the reversing lifting pulley (10) after passing around the lifting pulley (10) above the upper frame column (3) and enters the winding end of the lifting drive mechanism (8).

9. The liftable construction support for building hoisting cables according to claim 8, characterized in that: The lifting drive mechanism (8) includes a first motor (801) and a first reel (802), wherein the first motor (801) is fixed to a mounting plate, an output shaft of the first motor (801) extends horizontally and is transmission-connected to an input end of a planetary reducer, and the first reel (802) is transmission-connected to the output end of the planetary reducer via a rotating shaft, and an end portion of a steel wire rope (11) wound around the lifting pulley (10) is wound around the first reel (802).

10. The liftable construction support for building hoisting cables according to claim 2, characterized in that: The diagonal support locking drive (9) includes a second motor (901) and a second reel (902), wherein the second motor (901) is fixed to the diagonal support bracket on one side of the fixed frame column (1), and the output shaft of the second motor (901) also extends horizontally and is transmission-connected to the input end of the planetary reducer, and the second reel (902) is transmission-connected to the output end of the planetary reducer via a rotating shaft, and the end of the wire rope (11) wound around the fastening pulley (7045) is wound around the second reel (902).

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