Stirring device of lifting pouring equipment for T-beam end face treatment

Abstract

The utility model discloses a stirring device of lifting pouring equipment for T-beam end face treatment, which comprises an inner stirring shaft, a stirring sleeve, lower stirring blades and upper stirring blades, and the lower end of the stirring sleeve is fixedly connected with a plurality of upper stirring blades. The inner stirring shaft is rotationally connected into the stirring sleeve, the lower end of the inner stirring shaft extends out of the stirring sleeve and then is connected with a plurality of lower stirring blades, and the upper end of the stirring sleeve is rotationally connected to a supporting frame which is rotationally connected to the top of the slurry storage tank; the upper ends of the stirring sleeve and the inner stirring shaft extend out and then are connected to a driving mechanism which drives the stirring sleeve and the inner stirring shaft to rotate in a linkage manner; due to the arrangement mode that the double stirring shafts are arranged and the rotating directions of the stirring blades are opposite, the stirring effect is better, and under flowing, the possibility of solidification of stirred slurry is reduced, the flowability is improved, and waste is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to T beam construction stirring equipment technical field relates to a kind of stirring device for T beam end face processing lifting and pouring equipment. BACKGROUND

[0002] T beam prefabrication is mainly divided into reinforcement engineering, formwork engineering, concrete engineering and prestressed engineering. The traditional method of bridge pipeline grouting anchor head plugging is to adopt "mushroom head" mode to plug anchor head, to achieve sealing, pressure maintaining effect, after grouting is completed, the recess at anchorage device is filled, the conventional mode is to stick formwork on recess outside, manual pouring filling is carried out, but the recess position of T beam after being placed is higher, manual bucket pouring filling of backfill material is time-consuming and laborious, higher position difficult to contact still needs manual ladder operation, and operation safety is poor. To solve this problem, the inventor decides to use automatic lifting grouting equipment for grouting, but during grouting, high-energy fast-setting grout needs to be placed in grout storage box for pumping grouting, because the setting speed of the grout is fast, therefore, it needs to be stirred, using conventional stirring equipment, stirring effect is long, and it is easy to form setting layer in some corner, leading to waste. SUMMARY

[0003] The utility model solves the technical problems that provide a kind of stirring device for T beam end face processing lifting and pouring equipment, and the stirring effect is better, reduces the possibility of stirring grout setting, improves fluidity, reduces waste.

[0004] The utility model adopts technical scheme: a kind of stirring device for T beam end face processing lifting and pouring equipment, including inner stirring shaft, stirring sleeve pipe, lower stirring blade and upper stirring blade, stirring sleeve pipe lower end is fixedly connected with multiple upper stirring blades, multiple upper stirring blades are evenly arranged along the lower end of stirring sleeve pipe periphery, inner stirring shaft is rotatably connected in stirring sleeve pipe and is connected with multiple lower stirring blades after lower end of stirring sleeve pipe reaches, multiple lower stirring blades are evenly arranged along the lower end of inner stirring shaft periphery, lower stirring blade and upper stirring blade are arranged at intervals, stirring sleeve pipe upper end is rotatably connected on support frame, support frame is rotatably connected on slurry tank top, and upper end reaches fixedly connected with third gear after reaching, second gear meshing with third gear is fixedly connected on driving shaft, driving shaft is rotatably connected on the top plate of upper frame, upper frame is fixedly connected on support frame, first gear meshing with second gear is fixedly connected on motor shaft of stirring motor, stirring motor is fixedly connected on the top of upper frame, fixedly connected with crank after driving shaft upper end reaches upper frame, crank other end is hinged link one end, link other end is hinged one hinged pin on rotary disc, hinged pin is arranged away from rotary disc center, rotary disc middle part is fixedly connected on the end of stirring sleeve pipe reaching upper frame, stirring sleeve pipe is rotatably connected between upper frame, rotary disc, crank, link form double-crank mechanism.The utility model double stirring shaft and the arrangement of the rotating direction of stirring blade opposite, so that the stirring effect is better, under flow, reduce the possibility of stirring slurry solidification, improve fluidity, reduce waste.

[0005] The utility model discloses the beneficial effects of the utility model: compared with prior art, the utility model double stirring shaft and the arrangement of the rotating direction of stirring blade opposite, so that the stirring effect is better, under flow, reduce the possibility of stirring slurry solidification, improve fluidity, reduce waste. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 It is pressure grouting end structure schematic diagram;

[0007] Figure 2 It is T beam left end mounting formwork schematic diagram;

[0008] Figure 3 It is T beam left end structure schematic diagram;

[0009] Figure 4 It is Figure 1 Middle A part enlarged structure schematic diagram;

[0010] Figure 5 It is grouting equipment structure schematic diagram;

[0011] Figure 6 It is pitch arm structure schematic diagram;

[0012] Figure 7 It is stirring equipment structure schematic diagram;

[0013] Figure 8 It is a structure schematic diagram of T-beam pressure grouting equipment;

[0014] Figure 9 It is a structure schematic diagram of T-beam left end connecting pipeline arrangement;

[0015] Figure 10 It is a structure schematic diagram of T-beam right end connecting pressure grouting equipment;

[0016] Figure 11 It is Figure 8 It is an enlarged structure schematic diagram of B in the middle;

[0017] Figure 12 It is a structure schematic diagram of pressure grouting cover left view installation. DETAILED DESCRIPTION

[0018] The utility model will be further introduced below in combination with the drawings and specific examples.

[0019] Example 1: as Figures 5-7As shown, a stirring device for T-beam end face processing lifting pouring equipment, including inner stirring shaft 224, stirring sleeve 225, lower stirring blade 226 and upper stirring blade 227, the lower end of stirring sleeve 225 is fixedly connected with a plurality of upper stirring blades 227, the plurality of upper stirring blades 227 are evenly arranged along the lower end of stirring sleeve 225, the inner stirring shaft 224 is rotatably connected in the stirring sleeve 225 and the lower end of the stirring sleeve 225 is connected with a plurality of lower stirring blades 226, the plurality of lower stirring blades 226 are evenly arranged along the lower end of the inner stirring shaft 224, the lower stirring blades 226 and the upper stirring blades 227 are arranged at intervals, the upper end of the stirring sleeve 225 is rotatably connected on the support frame 228, the support frame 228 is rotatably connected on the top of the slurry storage tank 209 through a bearing, and the upper end is fixedly connected with a third gear 229 after extending out, the second gear 230 engaged with the third gear 229 is fixedly connected on the drive shaft 231, the drive shaft 231 is rotatably connected on the top plate of the upper frame 232 through a bearing, the upper frame 232 is fixedly connected on the support frame 228, the first gear 233 engaged with the second gear 230 is fixedly connected on the motor shaft of the stirring motor 234, the stirring motor 234 is fixedly connected on the top of the upper frame 232, the drive shaft 231 is fixedly connected with a crank 235 after extending out of the upper frame 232, the crank 235 is hingedly connected with one end of the connecting rod 236 at the other end, the other end of the connecting rod 236 is hingedly connected with a hinged pin 238 on the rotary disc 237, the hinged pin 238 is arranged away from the center of the rotary disc 237, the rotary disc 237 is fixedly connected on the end of the stirring sleeve 225 extending out of the upper frame 232, the stirring sleeve 225 and the upper frame 232 are rotatably connected through a bearing, the rotary disc 237, the crank 235 and the connecting rod 236 constitute a double crank mechanism, the installation mode can ensure that the rotation directions of the stirring sleeve and the inner stirring shaft are opposite, the above-mentioned double stirring shafts and the opposite rotation directions of the stirring blades make the stirring effect better, and reduce the possibility of solidification of the stirred slurry under flow.

[0020] Example 2: as Figures 5-7As shown, a T-beam end face treatment lifting pouring equipment, including grouting head 201, grouting pump 202, telescopic cylinder 203, pitch arm 204, lifting arm 205 and electric turntable 206, grouting head 201 is connected to grouting pump 202 through grouting pipe 207, grouting head 201 is fixedly connected at the end of the cylinder rod of telescopic cylinder 203, the cylinder seat of telescopic cylinder 203 is fixedly connected on pitch arm 204, pitch arm 204 is fixedly connected on the upper end of lifting arm 205, the lower end of lifting arm 205 is fixedly connected on electric turntable 206, electric turntable 206 is fixedly connected on walking trolley 208, grouting pump 202 is fixedly connected on walking trolley 208, walking trolley 208 is provided with grout storage tank 209, grout storage tank 209 is provided with stirring equipment 210; When using, the grouting material is put into the grout storage tank for stirring, after stirring to the set time, the walking trolley is controlled to the front middle position of the T-beam end, according to the position of the groove, the lifting arm is controlled to the set height, then the pitch arm is controlled to rotate downward to the set angle, the walking trolley is controlled to approach the T-beam end, the telescopic cylinder is controlled to extend, so that the grouting head extends into the grouting inlet to start the grouting pump to pour, during the grouting process, the electric turntable is controlled to rotate in a small angle range, and it is ensured that the grouting head can swing freely in the grouting inlet, through the swinging, the grouting material can be more stably filled in the pouring cavity, the performance stability and uniformity after the grouting material is poured and solidified are improved, the grooves are poured in sequence from bottom to top during the grouting process, after the grouting is completed, the walking trolley is controlled to enter the next T-beam end for grouting; The lifting pouring equipment can realize the rapid grouting of the single end of the T-beam, improve the grouting efficiency, reduce the labor intensity, the operation safety is higher, the lifting, pitch and telescopic control can realize the accurate butt joint of the grouting head, the visual identification module is added, which is more convenient for automatic identification of the grouting inlet according to the height, and then the walking trolley, lifting arm, pitch arm and telescopic cylinder are controlled to move correspondingly, so that the automation level is greatly improved.

[0021] The telescopic cylinder 203 adopts a double-rod cylinder, the double-rod ends are provided with mounting plates 221, the grouting head is conveniently installed, the double-rod cylinder is telescopic, the telescopic stability is reliable, and the spraying impact force under the pressure delivery of the grouting pump can be resisted, so that the grouting is more stable.

[0022] The grouting head 201 is a hard plastic pipe, the front end is provided with a flat structure, and the tail end is provided with a connecting plate 222, the connecting plate 222 is fixedly connected on the mounting plate 221, the grouting head 201 is connected with the grouting pipe 207 near the tail side, the flat head structure is convenient for stably feeding into the pouring cavity.

[0023] In order to avoid the slurry splashing in the pouring cavity during the grouting process to the telescopic cylinder and other parts, a splash-proof blocking device is arranged, that is, the flexible anti-slurry plate 211 is arranged at one end of the cylinder rod of the telescopic cylinder 203 close to the grouting head 201, which can shield the grouting head 201 after it is inserted into the grouting inlet 105. By blocking the slurry splashing from the grouting inlet, it is avoided to fly to the telescopic cylinder and other parts, affecting the service life.

[0024] In order to facilitate the installation of the telescopic cylinder, the pitching arm 204 includes a pitching connector 212, a U-shaped groove plate 213 and a pitching motor 215 for driving the rotation of the pitching connector 212. The pitching connector 212 is rotatably connected to the pitching seat 214 through a pitching rotation shaft, and the pitching seat 214 is fixedly connected to the upper end of the lifting arm 205. The pitching motor is installed on the pitching seat 214 and connected with the pitching rotation shaft. The U-shaped groove plate 213 is fixedly connected to the pitching connector 212 away from the pitching shaft, and the U-shaped groove plate 213 is provided with a strip-shaped through hole 216 for fixedly connecting the cylinder seat of the telescopic cylinder 203. The structure of the U-shaped groove plate is convenient and fast for installing the telescopic cylinder, and the strip-shaped through hole structure is also convenient for adjusting the position, and the application range is wider. The housing of the pitching motor is fixedly connected to one side of the pitching seat of the double-ear structure, drives the rotation of the pitching rotation shaft, and then drives the pitching arm to pitch, realizing the control of the required angle.

[0025] In order to be able to stably lift and support the grouting head, the telescopic cylinder and the pitching arm, the lifting arm 205 includes a lifting plate 217, two guide rods 218 and an electric push rod 219. The lifting plate 217 is used to connect the pitching arm 204, and is connected with the two guide rods 218 through the telescopic connection at both ends. The lower ends of the two guide rods 218 are fixedly connected to the fixed seat 220, and the fixed seat 220 is fixedly connected to the electric turntable 206. The rod end of the electric push rod 219 is fixedly connected to the middle part of the bottom side of the lifting plate 217, and the body of the electric push rod 219 is fixedly connected to the fixed seat 220. The electric push rod is used for lifting and driving, the lifting distance is accurate, the support is stable and reliable, the two guide rods are guided, the directional stability is good, the torsional resistance of the lifting arm is better during the spraying of the grouting head, and the support stability of the lifting arm is better.

[0026] The mixing device 210 includes an inner mixing shaft 224, a mixing sleeve 225, lower mixing blades 226, and upper mixing blades 227. Multiple upper mixing blades 227 are fixedly connected to the lower end of the mixing sleeve 225 and are evenly arranged circumferentially along the lower end of the mixing sleeve 225. The inner mixing shaft 224 is rotatably connected inside the mixing sleeve 225, and its lower end extends out of the mixing sleeve 225 before being connected to multiple lower mixing blades 226. The multiple lower mixing blades 226 are arranged circumferentially along the inner mixing shaft 224. 4. The lower stirring blades 226 and the upper stirring blades 227 are evenly arranged circumferentially at the lower end. The upper end of the stirring sleeve 225 is rotatably connected to the support frame 228. The support frame 228 is rotatably connected to the top of the slurry tank 209 through bearings, and a third gear 229 is fixedly connected to the upper end after it extends out. A second gear 230 that meshes with the third gear 229 is fixedly connected to the drive shaft 231. The drive shaft 231 is rotatably connected to the top plate of the upper frame 232 through bearings. The upper frame 232... A first gear 233, which meshes with a second gear 230, is fixedly connected to the support frame 228 and to the motor shaft of a stirring motor 234. The stirring motor 234 is inverted and fixedly connected to the top of the upper frame 232. A crank 235 is fixedly connected to the upper end of the drive shaft 231 after it extends out of the upper frame 232. One end of the crank 235 is hinged to one end of a connecting rod 236, and the other end of the connecting rod 236 is hinged to a hinge pin 238 on a rotating disk 237. The hinge pin 238 is located away from the center of the rotating disk 237. The rotating disk 237 is fixedly connected to the end of the stirring sleeve 225 that extends out of the upper frame 232. The stirring sleeve 225 and the upper frame 232 are rotatably connected by bearings. The rotating disk 237, crank 235, and connecting rod 236 form a double crank mechanism. The installation method ensures that the stirring sleeve and the inner stirring shaft rotate in opposite directions. The above-mentioned arrangement of double stirring shafts and stirring blades rotating in opposite directions makes the stirring effect better and reduces the possibility of the stirred slurry solidifying under flow conditions.

[0027] Example 3: As Figures 1-12 As shown, a method for integrated construction of T-beam pre-tensioning, grouting, and end sealing is provided, which includes the following steps:

[0028] Step 1: An upper corrugated pipe 200, a middle corrugated pipe 300, and two lower corrugated pipes 400 are pre-installed in the T-beam 100 to form a channel. Anchor seats 104 are fixedly connected to both ends of the upper corrugated pipe 200, the middle corrugated pipe 300, and the two lower corrugated pipes 400. The anchor seats 104 are embedded in the T-beam 100 and fixed. A set amount of steel strand 500 is inserted into each channel and both ends pass through the anchor seat 104. The T-beam 100 is placed on the support frame 600.

[0029] Step 2, prestressed anchorage 106 is installed at both ends of the plurality of steel strands 500 in each corrugated pipe, two tensioning machines are used to symmetrically pre-tension the plurality of steel strands 500 at both ends in each hole, the plurality of steel strands are stopped after reaching the set prestress and the set tensioning length, the anchorage is supported by the anchorage seat and fixed with the anchorage seat, the anchorage seat supports the prestressed steel strand, the excess steel strand outside the anchorage is removed, and the steel strand pre-tensioning and anchoring of the remaining holes are completed;

[0030] Step 3, hole grouting: the steel strand pre-tensioning and anchoring is completed within 48h, the grouting process is connected to the grouting machine through the grouting port arranged at the anchorage seat at the end of the T-beam, the grouting ports at both ends of the remaining holes are connected in series, and finally backflow to the grouting machine to form a circulating grouting, the grouting cover is fixed and sealed at the end of the anchorage, and the grouting amount in at least one hole is 1.5 times the volume of the corrugated pipe;

[0031] Step 4, after grouting, high-strength and fast-hardening grouting material is used to seal the anchorage at both ends of the T-beam.

[0032] During the grouting process in the plurality of corrugated pipes in the T-beam, circulating grouting is formed, and a sealing and fixed grouting cover is arranged at the anchorage to ensure that the entire grouting process is stable, avoid the problems of poor grouting quality and unstable grouting pressure caused by grouting leakage, and the grouting amount is 1.5 times the volume of the corrugated pipe, which can ensure sufficient grouting, the grout is more compact after solidification, the pipeline grouting is more full, and the use of high-strength and fast-hardening grouting material can realize rapid solidification, and the entire process greatly improves the production efficiency.

[0033] Further, the anchor sealing in step five is sealed by using multiple anchor sealing templates for each end of the T-beam, the multiple anchor sealing templates include upper template, middle template and lower template, the upper template and the middle template are the same, the lower template covers the groove of the two anchors, the specific structure includes steel plate 101 and screw rod 102, the steel plate 101 covers the groove 103 at the anchor 106, the screw rod 102 is symmetrically fixed and connected in the threaded hole of the anchor seat 104 at the inner end, and the outer end is locked by the nut 107 after penetrating the steel plate 101, the top of the steel plate 101 is provided with the grout inlet 105, the grout inlet 105 includes the top opening cavity structure surrounded by the inclined plate and the two triangular plates, the cavity structure is opposite to the gap of the steel plate 101, the upper end of the cavity structure is flush with the upper end of the steel plate 101, and is attached to the groove of the anchor to form a pouring cavity structure, which is convenient for pouring, and the existing threaded hole is used to install the screw rod to lock the template, which is convenient and fast, stable and reliable in connection, and the template is easy to disassemble after pouring, the triangular grout inlet is provided, which facilitates the addition of high-strength fast-hard grouting material to the pouring cavity, and only three templates are needed to complete the pouring of the entire end face, the independent module also reduces the serious local grouting leakage caused by uneven end face, and the material collecting disc 108 placed on the ground is also included, the material collecting disc 108 is opposite to the anchor sealing template installed at the end of the T-beam, and can collect the grout leaked from the anchor sealing template, handles are arranged at both ends of the material collecting disc, which facilitates movement, the universal roller with brake mechanism is arranged at the bottom of the material collecting disc, which facilitates movement, saves time and effort, has brake function, and is convenient for positioning.

[0034] Further, after the anchor sealing template is installed in step five, high-strength fast-hard grouting material is used for grouting sealing, and after the grouting material solidifies to the set time, the template is disassembled, the exposed length of the screw rod is removed, and the end face is polished and smoothed, the end face is chiseled and a layer of cement grout is applied for end face leveling treatment, and the screw rod is reserved inside, which can improve the support stability and reliability of the high-strength fast-hard grouting material filled in the groove, and the engagement capacity with the end of the T-beam is better.

[0035] In the grouting, the conventional is usually used artificial carrying grout bucket to carry on the grouting, but, T beam end grouting because T beam is placed on the support frame, the groove on it is higher, even the uppermost toilet needs to set up a platform or ladder to carry on the grouting, time-consuming and laborious, the operation safety is poorer, to solve this problem, the application sets up a lifting pouring equipment to carry on the grouting, adopts T beam 200 end face processing lifting pouring equipment to carry on the grouting when grouting, T beam end face processing lifting pouring equipment includes grouting head 201, grouting pump 202, telescopic cylinder 203, pitch arm 204, lifting arm 205 and electric turntable 206, grouting head 201 is connected to grouting pump 202 through grouting pipe 207, grouting head 201 is fixedly connected at the end of the cylinder rod of telescopic cylinder 203, the cylinder seat of telescopic cylinder 203 is fixedly connected on pitch arm 204, pitch arm 204 is fixedly connected on the upper end of lifting arm 205, the lower end of lifting arm 205 is fixedly connected on electric turntable 206, electric turntable 206 is fixedly connected on walking trolley 208, grouting pump 202 is fixedly connected on walking trolley 208, walking trolley 208 is installed with grout storage tank 209, grout storage tank 209 is provided with stirring equipment 210;When using, grouting material is put into grout storage tank for stirring, after stirring to the set time, control walking trolley to the front side middle position of T beam end, according to the position of the groove, control lifting arm to the set height, control pitch arm to rotate to the set angle downward, control walking trolley to approach T beam end, control telescopic cylinder to extend, make grouting head extend into grouting inlet, start grouting pump to carry on grouting, during grouting, control electric turntable to rotate in a small angle range, and ensure that grouting head can swing freely in grouting inlet, through swinging, grouting material can be more stable to fill pouring cavity, improve the performance stability and uniformity of grouting material after pouring and solidification, grouting process is grouted to the groove in the order from bottom to top, after grouting is completed, control walking trolley to enter the next T beam end to carry on grouting;Lifting pouring equipment can realize the rapid grouting of T beam single end, improve grouting efficiency, reduce labor intensity, the operation safety is higher, lifting, pitch and telescopic control can realize the accurate butt joint of grouting head, add visual identification module, it is more convenient to identify grouting inlet automatically according to height, and then control walking trolley, lifting arm, pitch arm and telescopic cylinder to carry out corresponding action, greatly improve the automation level.

[0036] Telescopic cylinder 203 adopts double rod cylinder, double rod end is provided with mounting plate 221, which is convenient for installing grouting head, double rod cylinder telescopes, telescopic stable and reliable, can resist the jet impact force of grouting head under the pressure of grouting pump, grouting is more stable.

[0037] Grouting head 201 is a hard plastic pipe, the front end is provided with a flat structure, the tail end is provided with a connecting plate 222, the connecting plate 222 is fixedly connected on the mounting plate 221, the grouting head 201 is connected with the grouting pipe 207 near the tail side, the flat head structure is convenient for stable feeding into the pouring cavity.

[0038] In order to avoid the slurry in the pouring cavity splashing on the telescopic cylinder and other components during the grouting process, a splash-proof blocking device is arranged, that is, the flexible slurry-proof plate 211 is arranged at the end of the cylinder rod of the telescopic cylinder 203 close to the grouting head 201, which can shield the grouting head 201 after it is inserted into the grout inlet 105. By blocking the slurry splashed from the grout inlet, it is avoided to fly to the telescopic cylinder and other components, affecting the service life.

[0039] In order to facilitate the installation of the telescopic cylinder, the luffing arm 204 includes a luffing connector 212, a U-shaped groove plate 213 and a luffing motor 215 for driving the rotation of the luffing connector 212. The luffing connector 212 is rotatably connected to the luffing seat 214 through a luffing rotation shaft, and the luffing seat 214 is fixedly connected to the upper end of the lifting arm 205. The luffing motor is installed on the luffing seat 214 and connected with the luffing rotation shaft. The U-shaped groove plate 213 is fixedly connected to the luffing connector 212 away from the luffing shaft. The U-shaped groove plate 213 is provided with a strip-shaped through hole 216 for fixedly connecting the cylinder seat of the telescopic cylinder 203. The structure of the U-shaped groove plate is convenient and fast for installing the telescopic cylinder. Moreover, the strip-shaped through hole structure is also convenient for adjusting the position, and the application range is wider. The machine shell of the luffing motor is fixedly connected to one side of the luffing seat of the double-ear structure, drives the rotation of the luffing rotation shaft, and then drives the luffing arm to luff, realizing the control of the required angle.

[0040] In order to stably lift and support the grouting head, the telescopic cylinder and the luffing arm, the lifting arm 205 includes a lifting plate 217, two guide rods 218 and an electric push rod 219. The lifting plate 217 is used to connect the luffing arm 204 and is connected with the two guide rods 218 at both ends. The lower ends of the two guide rods 218 are fixedly connected to the fixed seat 220, and the fixed seat 220 is fixedly connected to the electric turntable 206. The rod end of the electric push rod 219 is fixedly connected to the middle part of the bottom side of the lifting plate 217, and the machine body of the electric push rod 219 is fixedly connected to the fixed seat 220. The electric push rod is used for lifting and driving. The lifting distance is accurate, the support is stable and reliable, the two guide rods guide, the directional stability is good, the torsional resistance of the lifting arm is better during the spraying and spraying process of the grouting head, and the support stability of the lifting arm is better.

[0041] The stirring device 210 comprises an inner stirring shaft 224, a stirring sleeve 225, lower stirring blades 226 and upper stirring blades 227. The lower end of the stirring sleeve 225 is fixedly connected with a plurality of upper stirring blades 227, which are uniformly arranged along the lower end of the stirring sleeve 225 in the circumferential direction. The inner stirring shaft 224 is rotationally connected in the stirring sleeve 225 and has a lower end extending out of the stirring sleeve 225 and connected with a plurality of lower stirring blades 226, which are uniformly arranged along the lower end of the inner stirring shaft 224 in the circumferential direction. The lower stirring blades 226 and the upper stirring blades 227 are arranged at intervals. The upper end of the stirring sleeve 225 is rotationally connected with the support frame 228, which is rotationally connected with the top of the slurry tank 209 through a bearing and has an upper end extending out and fixedly connected with a third gear 229. A second gear 230 engaged with the third gear 229 is fixedly connected with the driving shaft 231, which is rotationally connected with the top plate of the upper frame 232 through a bearing. The upper frame 232 is fixedly connected with the support frame 228. A first gear 233 engaged with the second gear 230 is fixedly connected with the motor shaft of the stirring motor 234, which is fixedly connected with the top of the upper frame 232. The upper end of the driving shaft 231 extends out of the upper frame 232 and is fixedly connected with a crank 235. The other end of the crank 235 is hingedly connected with one end of a connecting rod 236. The other end of the connecting rod 236 is hingedly connected with a hinged pin 238 on a rotating disc 237. The hinged pin 238 is arranged away from the center of the rotating disc 237. The rotating disc 237 is fixedly connected with the end of the stirring sleeve 225 extending out of the upper frame 232. The stirring sleeve 225 and the upper frame 232 are rotationally connected through a bearing. The rotating disc 237, the crank 235 and the connecting rod 236 form a double-crank mechanism. The installation mode can ensure that the rotation directions of the stirring sleeve and the inner stirring shaft are opposite. The above-mentioned arrangement mode of the double stirring shafts and the opposite rotation directions of the stirring blades can make the stirring effect better and reduce the possibility of solidification of the stirred slurry.

[0042] Further, the operation method of the tensioning machine in step 2 is as follows: the main beam positive bending moment steel beam tensioning sequence is N2→N3→N4→N1; the pier top negative bending moment steel beam tensioning sequence is: T1 steel beam from inside to outside; the anchor uses a clamping anchor, and the tensioning procedure is 0→initial stress 10%σcon→initial stress 20%σcon→σcon, and the σcon is held for 5 min for anchoring; the tensioning rate is controlled within 10-25% per min of the tensioning control force, the stable pressure holding time after reaching the control stress is not less than 5 min; when the tensioning machine uses the jack to tension, the allowed error of the synchronous tensioning force between the left and right jacks at both ends is controlled within ±2%; when tensioning to the control stress, the precision of the tensioning control stress is controlled within ±1.5%; when the prestress is tensioned to the design value, the error between the actual elongation and the theoretical elongation is controlled within ±6%; after the tensioning is completed, the jack and the tool anchor are removed, and then the scratches of each steel strand at the tool anchor are checked; if the scratches are not flush, it means that there is a slip beam phenomenon, and the slip beam should be re-tensioned to reach the control stress; the total number of broken wires and slipped wires of the whole beam should not be more than 1.0% of the total number of steel wires of the section, and the number of broken wires in one beam should not be more than 1, and the same side should not have broken wires; if there are a large number of slipped wires and broken wires, the anchor head should be removed, and the steel beam should be checked and replaced before being re-tensioned; the prestressed reinforcement is anchored after the tensioning control stress reaches stability; for the clamping anchor, the top surface of the clamping piece should be flush after anchoring, the mutual displacement should not be greater than 2 mm, and the height exposed outside the anchor should not be greater than 4 mm.

[0043] The grouting equipment used in the grouting process includes an LJ-YJB1 circulating grouting system, a grouting cover 301 and connecting pipes 302. The grouting cover 301 is fixed and sealed at the end of the anchor 106, and the connecting pipes 302 are used in multiple numbers, each connecting the grout ports of two anchor seats 104. The grout ports are in communication with the inside of the corrugated pipes. The LJ-YJB1 circulating grouting system includes a mixer 303 and a grouting machine 304. The grouting port of the grouting machine 304 is connected to the grout port of the anchor seat 104 through a grout inlet pipe 305. The grout port of the anchor seat 104 is located at one end of the upper corrugated pipe 200. The grout port at the other end of the upper corrugated pipe 200 is connected to the grout port at the end of the right corrugated pipe in the lower two corrugated pipes 400 through the connecting pipes 302. The grout port at the other end of the right corrugated pipe is connected to the grout port at the end of the middle corrugated pipe 300. The grout port at the other end of the middle corrugated pipe 300 is connected to the grout port at the end of the left corrugated pipe in the lower two corrugated pipes 400. The grout port at the other end of the left corrugated pipe in the lower two corrugated pipes 400 is connected to the mixer 303 through a grout outlet pipe 306. The mixer 303 is connected to the grouting machine 304 through a pump and a pipeline. The whole grouting equipment forms a circulating grouting.

[0044] The pressure grouting cover 301 comprises a steel sleeve 307, an end plate 308 and a sealing rubber pad 309. The outer end of the steel sleeve 307 is fixedly connected with the end plate 308. The end plate 308 is provided with two through holes 310. The two through holes 310 are fixedly connected with the anchor seat 104 through two screws 311. The sealing rubber pad 309 is annular in structure and is provided with an annular groove 312 on one side. The sealing rubber pad 309 is sleeved on the end of the steel sleeve 307 through the annular groove 312. The parallel surface of the sealing rubber pad 309 abuts against the end face of the anchor 106 near the edge. The pressure grouting cover has the advantages that it is easy to assemble and disassemble, can be directly locked by screws through the existing threaded holes on the anchor disc, is reliable and stable in connection, can bear stable connection under high pressure, and can improve the sealing effect and avoid poor stability of the slurry under pressure due to slurry leakage.

[0045] Further, the method steps of the channel pressure grouting are as follows:

[0046] 1) Plugging of the anchor

[0047] According to the type of the anchor, the pressure grouting cover is made, and after the steel strand is cut, the pressure grouting cover is installed to seal the anchor;

[0048] 2) Mixing of the slurry

[0049] (1) Performance requirements of the pressure grouting equipment

[0050] ①The pressure grouting machine adopts a LJ-YJB1 circulating pressure grouting system, which comprises a high-speed slurry preparation system, a pressure grouting system, a control system and a data automatic acquisition system. The equipment should be able to automatically monitor and record the water-binder ratio, pressure grouting pressure, stable pressure, stable time and pressure grouting flow rate in the pressure grouting process

[0051] ②The rotating speed of the mixer should be not less than 1000 r / min. The shape of the stirring blade should match the rotating speed, the linear speed of the blade should be not less than 10 m / s and not more than 20 m / s, and the stirring should be uniform within a specified time;

[0052] ③The temporary storage tank for storing the slurry should have a stirring function, the stirring speed should be not more than 500 r / min, and a filter screen with a mesh size of not more than 3 mm is arranged at the outlet of the storage tank;

[0053] ④The volume of the mixer and the slurry storage tank should be greater than that of a bundle of pipes to be pressure grouted. It is prohibited to add material, stir and pressure grout at the same time;

[0054] ⑤The pressure grouting machine adopts a pressure grouting pump that can continuously work. The pressure grouting pump can work at a constant pressure of not less than 0.7 MPa. The minimum graduation value of the pressure gauge is not more than 0.1 MPa. The maximum range of the pressure gauge is such that the actual working pressure is within 25% to 75% of the range. A wind pressure type pressure grouting pump should not be used for pressure grouting;

[0055] ⑥The device has an automatic alarm function in abnormal situations.

[0056] ⑦It has a data protection function, which can effectively prevent construction personnel from modifying operation procedures or collected data. In the event of communication or device failure, emergency measures can be automatically taken to ensure data storage safety.

[0057] ⑧The water-cement ratio sensor, pressure sensor, and flow sensor of the pressure grouting machine should be calibrated or calibrated with the high-speed pulping system, pressure grouting system, and control system as a whole, with a calibration or calibration period of 6 months.

[0058] (2) The performance indicators of the post-tensioned prestressed hole grouting slurry are as follows:

[0059]

[0060] (3) Slurry preparation

[0061] According to the laboratory test results, the grouting mix proportion is determined; the weighing of materials used for grouting is automatically measured, with a measurement error of less than ±1%, the designed strength of the cement slurry is 50MPa, and the slurry is prepared with Portland cement with a strength grade of 42.5MPa;

[0062] Turn on the pressure grouting trolley, first add 80% of the mixing water to the high-speed stirring barrel with a rotating speed of 1000r / min, uniformly add all the pressure grouting agents while stirring, then uniformly add all the cement, stir for 2min after adding all the powder; then add the remaining 20% of the mixing water, continue to stir for 2min; then pass through the filter composed of a filter screen with a mesh size not greater than 3×3mm set at the outlet of the high-speed stirring barrel, and continuously stir, detect the slurry flow degree for 10-17s, and only after passing the detection can the slurry be pressed into the hole, and 3 groups of test pieces are prepared. The time interval from the end of cement slurry stirring to the pressure grouting into the pipe shall not exceed 40min; the pressure of pressure grouting is 0.5-0.7MPa; the filling degree of pressure grouting should reach the fullness of the other end of the hole and the exhaust hole discharging the same cement slurry as the specified flow degree; after closing the slurry outlet, a stable pressure period of not less than 0.5MPa should be maintained, and the maintenance time of the stable pressure period should be 3-5min;

[0063] 3) Intelligent pressure grouting

[0064] The LJ-YJB1 circulating pressure grouting system comprises a system host, a measurement and control system and a circulating pressure grouting system. The slurry is continuously circulated in a loop composed of a prestressed pipe, a grouting machine and a pressure grouting pump to discharge air in the pipe, find pipe blockage in time, punch a hole, discharge impurities, eliminate factors causing the slurry to be not dense, set a precision pressure sensor at the inlet and outlet of the pipe to monitor the pressure in real time and feed back to the system host for analysis and judgment. The measurement and control system adjusts the pressure according to the instruction of the host to ensure that the prestressed pipe completes the pressure grouting process under the constraints of the important indicators of the slurry quality, pressure size and pressure stabilization time required by the construction technical specification and ensures that the pressure grouting is full and dense. The basis for the system host to judge whether the pipe is filled is whether the pressure difference between the inlet and outlet of the pipe remains constant within a certain time.

[0065] Further, the hole is flushed before pressure grouting, and the accumulated water in the hole is blown out by compressed air without oil after flushing; the pressure grouting is slow and uniform and cannot be interrupted, and all the exhaust holes at the highest points are opened and closed one by one to make the exhaust in the hole smooth, and the pressure grouting of the same pipe is continuously performed and completed at one time; the prepared slurry is lower than 25℃, and cooling measures must be taken during construction in high-temperature seasons, or construction is performed in the morning or evening, and the continuous time of the cement slurry from preparation to pressure into the hole is not more than 40min, and the cement slurry should be kept in a flowing state before use and during the pressure injection process, and the cement slurry with reduced fluidity due to delayed use cannot be increased in fluidity by adding extra water; the cleaning and maintenance of the pressure grouting equipment should be strengthened, and there should be no residues and accumulated water in the cleaned equipment; during pressure grouting operation, the construction personnel correctly wear safety protective articles, the pressure grouting operator must wear protective glasses, and the operators for transporting cement and pressure grouting agent wear protective masks; during pressure grouting, each work team should make and leave not less than 3 groups of test pieces with the size of 40mm*40mm*160mm, and the standard curing is performed for 28d, and the compressive strength and flexural strength test is performed, serving as the basis for quality evaluation; after pressure grouting, the pressure grouting strength must reach 85% of the design strength when the precast concrete member is moved.

[0066] The above merely describes specific implementation manners of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application, therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A stirring device for a T-beam end face treatment lifting and pouring equipment, characterized in that: The inner stirring shaft (224), the stirring sleeve (225), the lower stirring blade (226) and the upper stirring blade (227) are included, the stirring sleeve (225) is fixedly connected with a plurality of upper stirring blades (227) at the lower end, the plurality of upper stirring blades (227) are evenly arranged along the lower end of the stirring sleeve (225) in the circumferential direction, the inner stirring shaft (224) is rotatably connected in the stirring sleeve (225) and is connected with a plurality of lower stirring blades (226) at the lower end extending out of the stirring sleeve (225), the plurality of lower stirring blades (226) are evenly arranged along the lower end of the inner stirring shaft (224) in the circumferential direction, the lower stirring blades (226) and the upper stirring blades (227) are arranged at intervals, the upper end of the stirring sleeve (225) is rotatably connected to the support frame (228), the support frame (228) is rotatably connected to the top of the slurry tank (209), and the upper end extending out is fixedly connected with the third gear (229), the second gear (230) engaged with the third gear (229) is fixedly connected to the drive shaft (231), the drive shaft (231) is rotatably connected to the top plate of the upper frame (232), the upper frame (232) is fixedly connected to the support frame (228), the first gear (233) engaged with the second gear (230) is fixedly connected to the motor shaft of the stirring motor (234), the stirring motor (234) is fixedly connected upside down to the top of the upper frame (232), the drive shaft (231) is fixedly connected with the crank (235) after extending out of the upper frame (232), the crank (235) is hingedly connected to one end of the connecting rod (236) at the other end, the other end of the connecting rod (236) is hingedly connected to a hinged pin (238) on the rotary disc (237), the hinged pin (238) is arranged away from the center of the rotary disc (237), the rotary disc (237) is fixedly connected to the end of the stirring sleeve (225) extending out of the upper frame (232) at the middle part, the stirring sleeve (225) is rotatably connected with the upper frame (232), and the rotary disc (237), the crank (235) and the connecting rod (236) constitute a double crank mechanism.

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