A large fixed crane foundation auxiliary construction process

Abstract

The present application relates to a large-scale fixed hanging foundation auxiliary construction process, which relates to the technical field of hoisting equipment construction, wherein the step 1: basic component preparation, the cylinder is divided into two parts, the cylinder base and the upper cylinder, and a positioning ring flange plate and a plurality of cross-shaped support legs are made; step 2: the anchor bolts are installed on the cylinder base flange through nuts, and then the anchor bolts pass through the positioning ring flange plate and are fixed to the positioning ring flange plate; step 3: multiple cross-shaped support legs are welded on the cylinder base flange; step 4: the assembled basic components are hoisted into the foundation pit, and the cylinder base flange is leveled, and the strength of the support legs is calculated after leveling; step 5: concrete is poured into the foundation pit; step 6: the upper cylinder is hoisted onto the cylinder base, and then welded. The present application does not need to consider the problem of bolts stuck on the flange due to inadequate control of the bolt shape at the flange connection, thereby ensuring the smooth installation of the flange and the anchor bolts.

Description

Technical Field

[0001] The present application relates to the technical field of hoisting equipment construction, and in particular to a large-scale fixed hoist foundation auxiliary construction process. Background Art

[0002] In fixed crane equipment, the non-rotating part of the fixed crane equipment, that is, the cylindrical part, is connected and fixed through the flange at the bottom of the cylinder and the anchor bolts in the foundation. The anchor bolts are pre-arranged in the concrete foundation. The force of the fixed crane will be transmitted to the foundation through the anchor bolts, so how to arrange the anchor bolts and successfully complete the pouring of the foundation concrete foundation is very important for the whole machine.

[0003] The existing structure of auxiliary anchor bolt arrangement for a 10t heavy and 18m long fixed crane is to first make two circular flange positioning rings. A circle of threaded steel is evenly welded between the upper and lower positioning rings to make the entire structure form a whole. The anchor bolts inserted between the two positioning rings are connected to the upper positioning ring by nuts, and no form of fixation is performed between the lower end and the positioning ring to prevent internal stress caused by over-positioning. Therefore, the lower end of the anchor bolt is a free end and the upper end is a fixed end. When constructing a cylindrical foundation, the entire structural component is hoisted and placed in the steel structure in the foundation pit. After adjusting the horizontal surface of the upper positioning ring, the bolts and the steel structure at the bottom of the pit are welded and reinforced. This method is used to ensure that the bolts are fixed during the concrete pouring process, and then the pouring work is carried out. After the pouring is completed, the hoisted cylindrical part is connected to the foundation.

[0004] For the 2000t fixed crane, the bolts are arranged according to the above-mentioned fixed crane method. Since the lower end is a free end and is freely welded to the steel structure, the verticality of each bolt cannot be guaranteed. If the bolt is too skewed, the thickness of the flange at the bottom of the 2000t fixed crane cylinder is relatively high, reaching 10cm. The deflection distance may be too large and the bolts may be stuck and cannot be installed. In addition, there are 360 ​​bolts on the fixed crane foundation. If the cumulative deviation is too large, the flange is very likely to not be installed smoothly. Summary of the invention

[0005] In order to improve the problem that the cumulative deviation of the bolts is too large, resulting in the inability to smoothly install the flange, the present application provides a large fixed crane foundation auxiliary construction process.

[0006] The present application provides a large-scale fixed hanging foundation auxiliary construction process adopting the following technical solutions:

[0007] A large fixed crane foundation auxiliary construction process, comprising:

[0008] Step 1: Prepare the basic components, divide the cylinder into two parts: the cylinder base and the upper cylinder, make a positioning ring flange plate, the inner circle of the positioning ring flange plate has the same diameter as the cylinder base flange, and the outer circle radius is smaller than the cylinder base flange, and the positioning ring flange plate is provided with bolt holes corresponding to the cylinder base flange one by one; secondly, make a plurality of cross-shaped support legs, the length of which is approximately equal to the depth of the foundation pit;

[0009] Step 2: Install the anchor bolts to the cylinder base flange through nuts, and then pass the anchor bolts through the bolt holes on the positioning ring flange plate and fix them to the positioning ring flange plate through nuts;

[0010] Step 3: Weld a plurality of cross-shaped support legs onto the cylindrical base flange, wherein the support legs are arranged along a length direction parallel to the anchor bolts so that the support legs can abut against the bottom of the foundation pit;

[0011] Step 4: hoist the assembled foundation components into the foundation pit, and level the cylinder base flange. After leveling, perform strength calculation on the support legs;

[0012] Step 5: pouring concrete into the foundation pit;

[0013] Step 6: hoist the upper cylinder onto the cylinder base and then weld it.

[0014] By adopting the above technical scheme, the foundation components are simple to manufacture, highly practical, environmentally friendly and highly operable; the anchor bolts are directly installed on the cylindrical base flange. Compared with the existing technology, the process steps are adjusted, and there is no need to consider the problem of the bolts getting stuck in the flange due to inadequate control of the bolt shape at the flange connection, thereby ensuring smooth installation of the flange and the anchor bolts; the anchor bolts are allowed to pass through the cylindrical base flange to solve various problems caused by the inability to ensure the position of the bolts during the casting process. The foundation components are supported in the foundation pit by setting a circle of support legs to ensure that the structure will not crush the steel structure in the foundation due to its excessive weight; the traditional process steps are adjusted, and the final butt joint of the two flanges is changed to butt welding of the cylindrical part, which reduces the difficulty of the work.

[0015] In a specific feasible implementation scheme, in step 2, the cylindrical base is inverted on the ground so that the cylindrical base flange faces upward, and in step 4, the welded basic component is first rotated 180° and then the basic component is hoisted into the foundation pit.

[0016] By adopting the above technical solution, the cylindrical base is inverted on the ground, which makes it easier to install structures such as anchor bolts, positioning ring flange plates, and support legs on the cylindrical base, thereby improving the convenience of assembling basic components.

[0017] In a specific feasible implementation scheme, in step 3, a plurality of the support legs are grouped in pairs, the central angles corresponding to two adjacent groups of the support legs are the same, and the two support legs in the same group are radially spaced along the cylindrical base flange so that the positioning ring flange plate is located between the two support legs in the same group.

[0018] By adopting the above technical solution, the support legs are evenly distributed, so that the support legs can support the cylindrical base more evenly; by arranging the positioning ring flange plate between the two support legs, the two support legs have a certain restrictive effect on the positioning ring flange plate, effectively avoiding the position change of the positioning ring flange plate.

[0019] In a specific possible implementation manner, in step 4, the leveling operation includes a primary leveling and a secondary leveling;

[0020] One-time leveling: adjust the level by adding a pad at the bottom of the support leg. After the adjustment, the anchor bolts and the positioning ring flange plate are firmly welded to the steel bars in the foundation pit;

[0021] Secondary leveling: adjust the horizontality of the cylinder base flange by adjusting the anchor bolts and the bolts at the cylinder base flange. After adjusting the cylinder base flange to be horizontal, add pads at the corresponding support legs in time.

[0022] By adopting the above technical solution, it is convenient to adjust the horizontality of the flange surface of the cylinder base; by leveling the cylinder base twice, the installation position of the cylinder base is guaranteed to be more accurate; by welding the positioning ring flange plate, anchor bolts and steel bars, the cylinder base can be installed more firmly.

[0023] In a specific feasible implementation scheme, in step 6, before the upper cylinder is hoisted, the laser transmitter is installed at the center of the upper cylinder through a positioning mechanism, and a level is installed on the positioning mechanism, and the laser receiver is installed at the center of the cylinder base. When the upper cylinder is hoisted, the laser transmitter is aligned with the laser receiver.

[0024] By adopting the above technical solution, when installing the upper cylinder, the upper cylinder is hoisted, and then the position of the upper cylinder is adjusted so that the laser emitted by the laser transmitter is irradiated onto the laser receiver, and the level is in a horizontal state. At this time, the upper cylinder and the cylinder base are in a concentric and horizontal state, thereby improving the accuracy of the installation position between the upper cylinder and the cylinder base and reducing the subsequent upper cylinder position adjustment work.

[0025] In a specific possible implementation scheme, the positioning mechanism includes a positioning cylinder, a drive adjustment member and a plurality of fixed rods, each of the fixed rods is connected to the positioning cylinder via the drive adjustment member, the laser emitter and the level are both arranged on the positioning cylinder, and the drive adjustment member can drive each of the fixed rods to be tightly fixed on the inner wall of the upper cylinder so that the laser emitter is located at the center of the upper cylinder.

[0026] By adopting the above technical solution, when installing the laser emitter, the positioning cylinder is first placed inside the upper cylinder, and then the fixing rod is driven by the driving adjustment member to be tightly fixed on the inner wall of the upper cylinder, thereby completing the fixation of the laser emitter. The tight fixation of the fixing rod improves the convenience of disassembly and assembly of the laser emitter.

[0027] In a specific possible implementation, the driving adjustment member includes a driving mechanism and a parallelogram structure, the parallelogram structure corresponds to the fixing rod one-to-one, the fixing rod is connected to the positioning cylinder through the parallelogram structure, so that the fixing rod is arranged parallel to the positioning cylinder and is in linear contact with the inner wall of the upper cylinder, and the driving mechanism is used to drive the parallelogram structure to rotate to adjust the distance between the fixing rod and the positioning cylinder.

[0028] By adopting the above technical solution, when installing the positioning cylinder, the driving mechanism drives the fixing rod to slide toward the inner wall of the upper cylinder through the parallelogram structure while maintaining a state parallel to the positioning cylinder. At the same time, the fixing rod and the inner wall of the upper cylinder are in line contact, which facilitates the installation of the positioning cylinder at the center of the upper cylinder.

[0029] In a specific possible implementation scheme, the parallelogram structure includes two connecting rods arranged in parallel, one end of the two connecting rods is hinged to the fixed rod, and the other end is hinged to the positioning tube, and the distance between the two hinge points of the two connecting rods on the fixed rod is the same as the distance between the two hinge points on the positioning tube.

[0030] By adopting the above technical solution and setting the connecting rod, a parallelogram structure is formed between the two hinge points on the fixing rod and the corresponding two hinge points on the positioning tube, so that the fixing rod can remain parallel to the positioning tube when moving.

[0031] In a specific possible implementation scheme, the driving mechanism includes a driving column and a driving gear. The driving gear corresponds to the fixed rod one by one and is coaxially fixed to the hinge axis of the connecting rod on the positioning cylinder. The driving column is slidably inserted in the positioning cylinder. The driving column is provided with a plurality of teeth grooves arranged along its own axial direction, and the driving gear cooperates with the plurality of teeth grooves to form a gear rack structure.

[0032] By adopting the above technical solution, when driving the fixed rod to move, the operator drives the driving column to slide, and the driving column engages with the driving gear through the tooth groove, thereby driving multiple driving gears to rotate simultaneously. The driving gear drives the connecting rod to rotate to ensure the consistency of the movement of multiple fixed rods, so that the positioning cylinder is quickly fixed and installed at the center of the upper cylinder.

[0033] In a specific feasible implementation scheme, a drive nut is threadedly sleeved on the positioning cylinder and is provided with a sliding groove arranged along its own axial direction. A limiting ring groove is provided on the inner side wall of the drive nut. A drive block for sliding in the sliding groove is provided on the drive column. The drive block can be inserted into the limiting ring groove so that the drive nut drives the drive column to slide.

[0034] By adopting the above technical solution, when driving the driving column, the driving nut is rotated, and the driving nut moves along the axial direction of the positioning cylinder while rotating. The driving nut cooperates with the driving block through the limiting ring groove to drive the driving block to slide along the sliding groove. The driving block drives the driving column to slide, thereby driving the driving column to slide. When the rotating nut stops rotating, the driving column is self-locking, thereby improving the convenience of moving and fixing the driving column.

[0035] In summary, the present application includes at least one of the following beneficial technical effects:

[0036] 1. The foundation components are simple to make, highly practical, environmentally friendly, and highly operable; the anchor bolts are directly installed on the cylindrical base flange. Compared with the existing technology, the process steps are adjusted, and there is no need to consider the problem of the bolts being stuck on the flange due to the inadequate control of the bolt shape at the flange connection, thereby ensuring the smooth installation of the flange and the anchor bolts; the anchor bolts can be inserted into the cylindrical base flange to solve various problems caused by the deviation of the bolts due to the inability to ensure their own position during the pouring process; a circle of support legs is set to support the foundation components in the foundation pit to ensure that the structure will not crush the steel structure in the foundation due to excessive weight; the traditional process steps are adjusted, and the final two flanges are butt-welded to the cylindrical part, which reduces the difficulty of work;

[0037] 2. Conveniently adjust the horizontality of the flange surface of the cylinder base; by leveling the cylinder base twice, ensure that the installation position of the cylinder base is more accurate; by welding the positioning ring flange plate, anchor bolts and steel bars, the cylinder base can be installed more firmly; 3. The operator turns the driving nut to drive the column to slide, and the driving column engages with the driving gear through the tooth groove, driving multiple driving gears to rotate at the same time. The driving gear drives the connecting rod to rotate, and drives the fixing rod to be tightly fixed on the inner wall of the upper cylinder, while ensuring the consistency of the movement of multiple fixing rods, and at the same time, the positioning cylinder is quickly fixed and installed at the center of the upper cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of a large fixed hanging foundation auxiliary construction process according to an embodiment of the present application.

[0039] Figure 2 It is a structural diagram used to show the arrangement of the supporting legs.

[0040] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0041] Figure 4 It is an exploded view used to show the assembly of the upper cylinder and the cylinder base.

[0042] Figure 5 It is a structural diagram used to show the positioning mechanism.

[0043] Figure 6 is along Figure 5 Sectional view along line BB.

[0044] Explanation of the reference numerals in the accompanying drawings: 11. Cylindrical base; 12. Upper cylinder; 13. Anchor bolt; 14. Positioning ring flange plate; 15. Support leg; 16. Bolt hole; 21. Laser transmitter; 22. Level; 23. Laser receiver; 3. Positioning mechanism; 31. Positioning cylinder; 32. Drive adjustment member; 321. Drive mechanism; 3211. Drive column; 3212. Drive gear; 3213. Tooth groove; 3214. Sliding groove; 3215. Drive nut; 3216. Limiting ring groove; 3217. Drive block; 322. Parallelogram structure; 3221. Connecting rod; 33. Fixing rod. DETAILED DESCRIPTION

[0045] The following is combined with Figure 1-6 This application is described in further detail.

[0046] The embodiment of the present application discloses a large-scale fixed crane foundation auxiliary construction process.

[0047] A large fixed crane foundation auxiliary construction process has the following steps:

[0048] Step 1: Prepare the basic components, and divide the cylinder into a cylinder base 11 and an upper cylinder 12 (such as Figure 4 ) two parts, the cylindrical base 11 is preferably selected to have the same height as the anchor bolt 13, a flange is welded on the cylindrical base 11, and a plurality of ribs are contained between the flange and the cylindrical base 11 to strengthen the connection strength between the flange and the cylindrical base 11. A plurality of bolt holes 16 are provided on the flange of the cylindrical base 11. In this embodiment, the cylindrical base 11 of a 2000t fixed crane is provided with 360 bolt holes 16 as an example, and the 360 ​​bolt holes 16 are divided into 180 groups of two in each group. The two bolt holes 16 in each group are arranged along the radial direction of the flange, and the 180 groups of bolt holes 16 are evenly arranged on the flange at an angle of 2°.

[0049] A positioning ring flange plate 14 is made, the thickness of the positioning ring flange plate 14 is 50mm, the inner circle diameter of the positioning ring flange plate 14 is consistent with the flange of the cylindrical base 11, and the outer circle radius is 200mm smaller than the flange of the cylindrical base 11, and bolt holes 16 corresponding to the flange of the cylindrical base 11 are opened on the positioning ring flange plate 14.

[0050] Eighteen cross-shaped support legs 15 are made, and the length of the support legs 15 is approximately equal to the depth of the foundation pit, which is 3m.

[0051] Step 2: Reference Figure 1 First, turn the cylindrical base 11 upside down on the ground so that the flange of the cylindrical base 11 faces upward, and then install the anchor bolts 13 of the same specification on the flange of the cylindrical base 11 one by one through nuts. After each pair of anchor bolts 13 is installed, measure the overhanging length of the anchor bolts 13 to ensure that the overhanging lengths of the anchor bolts 13 are consistent.

[0052] After all the anchor bolts 13 are fixed to the flange of the cylindrical base 11 , the upper ends of the anchor bolts 13 pass through the bolt holes 16 on the positioning ring flange plate 14 and are fixed to the positioning ring flange plate 14 by nuts.

[0053] By ensuring that the anchor bolts 13 can penetrate the flange of the cylindrical base 11, various problems caused by the inability to ensure the position of the bolts during the casting process can be solved. After the upper and lower flanges are connected with the anchor bolts 13, the part becomes a whole, saving an upper positioning ring compared to the existing process.

[0054] Step 3: Reference Figure 2 , Figure 3, eighteen cross-shaped support legs 15 are welded to the flange of the cylindrical base 11, and the welding method of the support legs 15 is as follows: the eighteen support legs 15 are grouped in pairs, divided into nine groups, and the nine groups of support legs 15 are arranged at an angle of 40°. The two support legs 15 in the same group are arranged radially along the flange of the cylindrical base 11, so that the positioning ring flange plate 14 is located between the two support legs 15 in the same group; each support leg 15 is arranged along a length direction parallel to the anchor bolt 13, and is not welded to the positioning ring flange plate 14.

[0055] Since this part of the 2000t fixed crane is too heavy to be placed directly on the steel structure in the foundation, these support legs 15 are made to support the entire structure. By evenly distributing the support legs 15, it is convenient for the support legs 15 to more evenly support the cylindrical base 11. By arranging the positioning ring flange plate 14 between the two support legs 15, the two support legs 15 have a certain limiting effect on the positioning ring flange plate 14, effectively avoiding the position change of the positioning ring flange plate 14.

[0056] Step 4: After the welding of the support legs 15 is completed, the basic component is turned over 180 degrees, and then the basic component is hoisted into the foundation pit, and the flange of the cylindrical base 11 is leveled.

[0057] The leveling operation includes primary leveling and secondary leveling.

[0058] One-time leveling: adjust the level by adding a pad at the bottom of the support leg 15. After the adjustment, the anchor bolts 13 and the positioning ring flange plate 14 are firmly welded to the steel bars in the foundation pit.

[0059] Secondary leveling: adjust the horizontality of the flange of the cylinder base 11 by adjusting the anchor bolts 13 and the bolts at the flange of the cylinder base 11. After adjusting the flange of the cylinder base 11 to be horizontal, add pads at the corresponding support legs 15 in time to ensure the contact area between the support legs 15 and the ground.

[0060] By adding pads and adjusting bolts, the horizontality of the flange surface of the cylindrical base 11 can be easily adjusted; by leveling the cylindrical base 11 twice, the installation position of the cylindrical base 11 can be ensured to be more accurate; by welding the positioning ring flange plate 14, the anchor bolts 13 and the steel bars, the cylindrical base 11 can be installed more firmly.

[0061] Due to the addition of part of the cylinder and the flange at the bottom of the cylinder, the total weight increases from 40t to 110t, so the strength and stability of the support leg 15 need to be checked. The checking method is as follows:

[0062] 1. The support leg 15 is under pressure, and the strength of the support leg 15 is checked.

[0063] The cross-sectional area of ​​the supporting leg 15 is a, and the total cross-sectional area is A. Relative σ and [σ s ] to compare and determine whether the strength meets the requirements.

[0064] 2. Use a slender rod to check the stability of the supporting leg 15

[0065]

[0066] Where u is the length coefficient, l is the length of the compression rod, E is the elastic modulus, I is the moment of inertia, and i is the inertia radius of the cross section.

[0067] σ p Material ratio limit

[0068] Because λ>λ p , so Euler's formula holds

[0069]

[0070] For compression bars in metal structures, the stability safety factor n st =1.8~3

[0071] Compare n with n st The value of is used to determine whether the stability meets the requirements.

[0072] Step 5: After the strength check of the support leg 15 is completed and the strength and stability meet the requirements, pour concrete into the foundation pit.

[0073] Step 6: Reference Figure 4 , Figure 5 Before the upper cylinder 12 is hoisted, the laser transmitter 21 is installed at the center of the upper cylinder 12 through the positioning mechanism 3, and the level 22 is installed on the positioning mechanism 3. The laser receiver 23 is installed at the center of the cylinder base 11. When the upper cylinder 12 is hoisted, the laser transmitter 21 is aligned with the laser receiver 23, and then the upper cylinder 12 is dropped onto the cylinder base 11, and finally welding is performed.

[0074] Reference Figure 5 , Figure 6The positioning mechanism 3 in this embodiment includes a positioning cylinder 31, a driving adjustment member 32 and a plurality of fixed rods 33. The positioning cylinder 31 is a cylindrical cylinder with closed ends. The number of the fixed rods 33 in this embodiment is four, and the four fixed rods 33 are arranged at an angle of 90° along the circumference of the positioning cylinder 31. Each fixed rod 33 is connected to the positioning cylinder 31 through the driving adjustment member 32. The laser emitter 21 is fixedly arranged at one end of the positioning cylinder 31 facing the cylinder base 11. At the same time, the laser emitted by the laser emitter 21 is colinear with the central axis of the positioning cylinder 31. The level 22 is fixedly arranged at the other end of the positioning cylinder 31. Alarm devices can be arranged on both the laser emitter 21 and the level 22. When the laser emitted by the laser emitter 21 is not aligned with the laser receiver 23, the alarm device alarms. When the level 22 is not in a horizontal position, the alarm device still alarms, so as to facilitate the operator to adjust the position of the upper cylinder 12.

[0075] Reference Figure 5 , Figure 6 The driving adjustment member 32 in this embodiment includes a driving mechanism 321 and a parallelogram structure 322. The parallelogram structure 322 corresponds to the fixed rod 33 one by one. The parallelogram structure 322 in this embodiment includes two connecting rods 3221 arranged parallel to each other. One end of each connecting rod 3221 is hinged to the hinge support on the fixed rod 33 through a hinge axis, and the other end is hinged to the hinge support on the positioning cylinder 31 through a hinge axis. The spacing between the two hinge points of the two connecting rods 3221 on the fixed rod 33 is the same as the spacing between the two hinge points on the positioning cylinder 31, so as to ensure that when the connecting rod 3221 rotates around the hinge point on the positioning cylinder 31, the axis of the fixed rod 33 remains parallel to the axis of the positioning cylinder 31. When the fixing rod 33 is tightly fixed on the inner wall of the upper cylinder 12, line contact is adopted between the fixing rod 33 and the upper cylinder 12, so as to ensure that after the fixing rod 33 is installed, the axis of the positioning cylinder 31 is colinear with the axis of the upper cylinder 12, thereby quickly completing the installation of the laser emitter 21.

[0076] Reference Figure 5 , Figure 6The driving mechanism 321 in this embodiment includes a driving column 3211 and a driving gear 3212. The driving gear 3212 corresponds to the fixed rod 33 one by one, and is coaxially arranged at the hinge axis of the connecting rod 3221 on the positioning cylinder 31, and is fixedly connected to the connecting rod 3221. The driving column 3211 is slidably inserted in the positioning cylinder 31. The length of the driving column 3211 is less than the length of the positioning cylinder 31, so as to ensure that both ends of the positioning cylinder 31 have space for the driving column 3211 to slide. The driving column 3211 is provided with a plurality of tooth grooves 3213 arranged along its own axial direction, and each tooth groove 3213 is arranged along the driving column 3211. The driving gear 3212 cooperates with the plurality of tooth grooves 3213 to form a gear rack structure, so as to ensure that when the driving column 3211 slides, the driving gear 3212 is driven to rotate.

[0077] Reference Figure 5 , Figure 6 The positioning cylinder 31 has two sliding grooves 3214 along its own axial direction, and the two sliding grooves 3214 are arranged opposite to each other along the circumference of the positioning cylinder 31. A driving nut 3215 is threadedly sleeved on the positioning cylinder 31, and a limiting ring groove 3216 arranged along its own circumference is opened on the inner side wall of the driving nut 3215. Two driving blocks 3217 are fixed on the driving column 3211, and the driving blocks 3217 correspond to the sliding grooves 3214 one by one. Each driving block 3217 passes through the sliding groove 3214 and is inserted into the limiting ring groove 3216. The driving block 3217 is rotatably connected with the driving nut 3215.

[0078] Before lifting the upper cylinder 12, the laser emitter 21 is inserted into the upper cylindrical tube, and then the operator rotates the driving nut 3215. While rotating, the driving nut 3215 moves along the axial direction of the positioning tube 31. The driving nut 3215 cooperates with the driving block 3217 through the limiting ring groove 3216, and drives the driving block 3217 to slide along the sliding groove 3214. The driving block 3217 drives the driving column 3211 to slide. The driving column 3211 engages with the driving gear 3212 through the tooth groove 3213, and drives multiple driving gears 3212 to rotate at the same time. The driving gear 3212 drives the connecting rod 3221 to rotate to ensure the consistency of the movement of multiple fixing rods 33, so that the positioning tube 31 is quickly fixed and installed at the center of the upper cylinder 12. The connecting rod 3221 drives the fixing rod 33 to move to the inner side wall of the upper cylinder 12 , and is tightly fixed on the inner side wall of the upper cylinder 12 , thereby completing the fixation of the laser emitter 21 .

[0079] The implementation principle of a large-scale fixed hanging foundation auxiliary construction process in the embodiment of the present application is as follows: the cylinder is divided into two parts, the cylinder base 11 and the upper cylinder 12, a positioning ring flange plate 14 is made, and bolt holes 16 corresponding to the flanges of the cylinder base 11 are opened on the positioning ring flange plate 14, and multiple cross-shaped support legs 15 are installed on the flange of the cylinder base 11 through nuts, and then the anchor bolts 13 pass through the bolt holes 16 on the positioning ring flange plate 14 and are fixed to the positioning ring flange plate 14 through nuts, multiple cross-shaped support legs 15 are welded to the flange of the cylinder base 11, and the support legs 15 are arranged along the length direction parallel to the anchor bolts 13 so that the support legs 15 can abut against the bottom of the foundation pit, the assembled foundation components are hoisted into the foundation pit, and the flange of the cylinder base 11 is leveled, concrete is poured into the foundation pit, the upper cylinder 12 is hoisted onto the cylinder base 11, and then welding is performed.

[0080] The basic components of this solution are simple to manufacture, highly practical, environmentally friendly, and highly operable; the anchor bolts 13 are directly installed on the flange of the cylindrical base 11. Compared with the prior art, the process steps are adjusted, and there is no need to consider the problem of the bolts getting stuck in the flange due to inadequate control of the bolt shape at the flange connection, thereby ensuring smooth installation of the flange and the anchor bolts; by allowing the anchor bolts 13 to be inserted into the flange of the cylindrical base 11, various problems caused by the deviation of the bolts due to their inability to maintain their own position during the casting process are solved.

[0081] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A large fixed hanging foundation auxiliary construction process, characterized in that: include: Step 1: Prepare the basic components, divide the cylinder into two parts, namely, the cylinder base (11) and the upper cylinder (12), and make a positioning ring flange plate (14). The inner diameter of the positioning ring flange plate (14) is consistent with the flange of the cylinder base (11), and the outer radius is smaller than the flange of the cylinder base (11). Bolt holes (16) corresponding to the flange of the cylinder base (11) are opened on the positioning ring flange plate (14); secondly, make a plurality of cross-shaped support legs (15), and the length of the support legs (15) is equal to the depth of the foundation pit; Step 2: Install the anchor bolts (13) onto the flange of the cylindrical base (11) through nuts, and then pass the anchor bolts (13) through the bolt holes (16) on the positioning ring flange plate (14) and are fixed to the positioning ring flange plate (14) through nuts; Step 3: Welding a plurality of cross-shaped support legs (15) to the flange of the cylindrical base (11), wherein the support legs (15) are arranged along a length direction parallel to the anchor bolts (13) so that the support legs (15) can abut against the bottom of the foundation pit; Step 4: hoisting the assembled foundation components into the foundation pit, and leveling the flange of the cylindrical base (11), and after leveling, performing strength calculation on the support legs (15); Step 5: pouring concrete into the foundation pit; Step 6: hoisting the upper cylinder (12) onto the cylinder base (11), and then welding; In step 3, a plurality of the support legs (15) are arranged in groups of two, the central angles of two adjacent groups of the support legs (15) are the same, and the two support legs (15) in the same group are arranged radially spaced along the flange of the cylindrical base (11) so that the positioning ring flange plate (14) is located between the two support legs (15) in the same group; In step 6, before the upper cylinder (12) is hoisted, the laser transmitter (21) is installed at the center of the upper cylinder (12) through the positioning mechanism (3), and the level (22) is installed on the positioning mechanism (3). The laser receiver (23) is installed at the center of the cylinder base (11). When the upper cylinder (12) is hoisted, the laser transmitter (21) and the laser receiver (23) are aligned; The positioning mechanism (3) comprises a positioning cylinder (31), a driving adjustment member (32) and a plurality of fixing rods (33); each of the fixing rods (33) is connected to the positioning cylinder (31) via the driving adjustment member (32); the laser emitter (21) and the level (22) are both arranged on the positioning cylinder (31); the driving adjustment member (32) can drive each of the fixing rods (33) to be tightly fixed on the inner wall of the upper cylinder (12), so that the laser emitter (21) is located at the center of the upper cylinder (12).

2. The large fixed hanging foundation auxiliary construction process according to claim 1 is characterized in that: In step 2, the cylindrical base (11) is inverted on the ground so that the flange of the cylindrical base (11) faces upwards. In step 4, the welded basic component is first rotated 180° and then hoisted into the foundation pit.

3. The large fixed hanging foundation auxiliary construction process according to claim 1 is characterized in that: In step 4, the leveling operation includes primary leveling and secondary leveling; Primary leveling: adjusting the level by adding a pad at the bottom of the support leg (15); after the adjustment, the anchor bolts (13) and the positioning ring flange plate (14) are firmly welded to the steel bars in the foundation pit; Secondary leveling: The horizontality of the flange of the cylindrical base (11) is adjusted by adjusting the anchor bolts (13) and the bolts at the flange of the cylindrical base (11). After the flange of the cylindrical base (11) is adjusted to be horizontal, a pad is added at the corresponding support leg (15) in time.

4. The large fixed hanging foundation auxiliary construction process according to claim 1 is characterized in that: The driving adjustment member (32) comprises a driving mechanism (321) and a parallelogram structure (322). The parallelogram structure (322) corresponds to the fixing rod (33) one by one. The fixing rod (33) is connected to the positioning cylinder (31) through the parallelogram structure (322), so that the fixing rod (33) and the positioning cylinder (31) are arranged in parallel and are in line contact with the inner wall of the upper cylinder (12). The driving mechanism (321) is used to drive the parallelogram structure (322) to rotate so as to adjust the distance between the fixing rod (33) and the positioning cylinder (31).

5. The large fixed hanging foundation auxiliary construction process according to claim 4 is characterized in that: The parallelogram structure (322) comprises two connecting rods (3221) arranged in parallel, one end of the two connecting rods (3221) is hinged to the fixing rod (33), and the other end is hinged to the positioning tube (31), and the distance between the two hinge points of the two connecting rods (3221) on the fixing rod (33) is the same as the distance between the two hinge points on the positioning tube (31).

6. The large fixed hanging foundation auxiliary construction process according to claim 5 is characterized by: The driving mechanism (321) comprises a driving column (3211) and a driving gear (3212). The driving gear (3212) corresponds to the fixing rod (33) one by one and is coaxially fixed to the hinge axis of the connecting rod (3221) on the positioning tube (31). The driving column (3211) is slidably inserted in the positioning tube (31). The driving column (3211) is provided with a plurality of tooth grooves (3213) arranged along its own axial direction. The driving gear (3212) cooperates with the plurality of tooth grooves (3213) to form a gear rack structure.

7. The large fixed hanging foundation auxiliary construction process according to claim 6 is characterized by: The positioning cylinder (31) is threadedly sleeved with a driving nut (3215) and is provided with a sliding groove (3214) arranged along its own axial direction. The inner side wall of the driving nut (3215) is provided with a limiting ring groove (3216). The driving column (3211) is provided with a driving block (3217) for sliding in the sliding groove (3214). The driving block (3217) can be inserted into the limiting ring groove (3216) so that the driving nut (3215) drives the driving column (3211) to slide.

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