Pressure-maintaining grouting mechanism of concrete prefabricated wall grouting sleeve

Abstract

The invention provides a pressure maintaining grouting mechanism of a concrete prefabricated wall grouting sleeve, and relates to the field of concrete prefabricated walls. Comprising a lower precast concrete wall and an upper precast concrete wall; an upper steel bar section and a lower steel bar section are arranged in the upper prefabricated concrete wall and the lower prefabricated concrete wall correspondingly, the grouting sleeve is fixedly connected to the bottom end of the upper steel bar section in a sleeving mode, and the top end of the lower steel bar section extends into the grouting sleeve; the pressure maintaining bin is connected with a side frame, the side frame is detachably mounted on the outer wall of the upper prefabricated concrete wall through a mounting mechanism, one side of the bottom of the pressure maintaining bin fixedly communicates with a discharging pipe, and the bottom end of the discharging pipe is connected with a telescopic pipe; the blocking part is arranged in the discharging pipe, and a gap between the blocking part and the inner wall of the discharging pipe is adjustable; and the dragging mechanism is used for driving the plugging part to move in the discharging pipe. And the mounting mechanism is convenient to disassemble and assemble on the upper precast concrete wall surface, so that the whole body can be repeatedly used.

Description

Technical Field

[0001] The invention relates to the field of prefabricated concrete walls, in particular to a pressure-maintaining grouting mechanism of a grouting sleeve of a prefabricated concrete wall. Background Art

[0002] Precast concrete walls are cast-in-place concrete wall panels produced in a factory; when two walls are connected, a grouting sleeve is required to achieve the connection through grouting.

[0003] For example, the existing patent document "CN218933611U A pressure-maintaining grouting mechanism for a concrete precast wall grouting sleeve" provides pressure-maintaining for the grouting sleeve by setting a pressure-maintaining bin in the upper precast concrete wall, and providing pressure-maintaining for the grouting of the grouting sleeve through the height of the pressure-maintaining bin and the weight of the slurry in the pressure-maintaining bin; another example is the existing patent document "CN22220444U Screw pressure grouting machine The motor drives the screw assembly to rotate through the reduction gearbox, and the body cavity is completely sealed. When the screw assembly rotates, the air is discharged, a vacuum is formed in the cavity, and the cement slurry is sucked in, discharged from the slurry discharge head and directly input into the pressure-maintaining tank, and then the cement slurry is discharged from the pressure-maintaining tank through the slurry discharge port. The effect of this scheme is: the slurry discharge is smooth and pulse-free, and the pressure is continuously pressed into the pressure-maintaining tank, which can achieve the effects of stable pressure, pressure maintenance, pressure stabilization, and continuous slurry discharge. However, the pressure-maintaining grouting mechanism in the above-mentioned prior art is arranged inside the prefabricated wall. After use, it cannot be dismantled, and there is a lack of design for repeated use, which causes waste; at the same time, the pressure-maintaining bin and the remaining materials in the pressure-maintaining bin and the grouting sleeve lack recycling, and are not easy to recycle and discharge. Summary of the invention

[0004] The present invention provides a pressure-maintaining grouting mechanism for a concrete prefabricated wall grouting sleeve in order to solve the technical problems of lack of disassembly design, inability to be reused and difficulty in recycling internal materials.

[0005] The present invention solves the above technical problems through the following technical solutions: The present invention first provides a pressure-maintaining grouting mechanism for a concrete precast wall grouting sleeve, comprising a lower precast concrete wall and an upper precast concrete wall; further comprising: a grouting sleeve, wherein an upper steel bar segment and a lower steel bar segment are respectively arranged in the upper precast concrete wall and the lower precast concrete wall, wherein the grouting sleeve is fixedly sleeved to the bottom end of the upper steel bar segment, and the top end of the lower steel bar segment extends into the grouting sleeve; the grouting sleeve is provided with an upper opening and a lower opening, wherein the upper opening and the lower opening both extend to the outside of the upper precast concrete wall, and the lower The opening is connected with a connecting pipe; the pressure-maintaining bin is connected with a side frame, and the side frame can be detachably mounted on the outer wall of the upper precast concrete wall through a mounting mechanism; one side of the bottom of the pressure-maintaining bin is fixedly connected with a feeding pipe, and the bottom end of the feeding pipe is connected with a telescopic tube which can be pulled out or inserted from the connecting pipe port; a sealing part, the sealing part is arranged in the feeding pipe, and the gap between the sealing part and the inner wall of the feeding pipe is adjustable; a dragging mechanism, the dragging mechanism is used to drive the sealing part to move in the feeding pipe, and the dragging mechanism is mounted on the side frame.

[0006] In this technical solution, the installation mechanism is used to facilitate disassembly and assembly on the upper precast concrete wall, so that the whole can be reused to avoid waste; at the same time, after use, the dragging mechanism pulls the sealing part to push the material remaining in the discharge pipe back into the pressure holding bin, which is convenient for centralized discharge through the pressure holding bin.

[0007] Preferably, the number of the side frames is two, the pressure-keeping bin is rotatably installed between the two side frames, and a connecting strip is fixedly installed between the two side frames; the top of the pressure-keeping bin is open, the bottom of the pressure-keeping bin is inclined to the horizontal plane, and a discharge port is provided at the bottom of the side of the pressure-keeping bin away from the discharge pipe, and a valve is installed on the discharge port.

[0008] In the technical solution, the pressure-maintaining bin is rotatable and adjustable and the bottom is tilted, so that the material can flow into the discharge port or the feed pipe conveniently.

[0009] Preferably, it also includes a driving mechanism, which includes a fixed shell fixedly mounted on the side frame and a motor fixedly mounted on one side of the fixed shell, a worm is rotatably mounted in the fixed shell, one end of the worm is fixedly connected to the output shaft end of the motor, the worm is meshingly connected to a worm wheel, a first rotating shaft is fixedly mounted in the middle of the worm wheel, the first rotating shaft is rotatably connected to the side frame, and the first rotating shaft is fixedly connected to the pressure holding chamber.

[0010] In this technical solution, the driving mechanism is used to drive the pressure-maintaining chamber to rotate and adjust the angle.

[0011] Preferably, it also includes a transmission mechanism; the transmission mechanism includes a fixed gear ring, a gear, a first transmission wheel and a second transmission wheel; the fixed gear ring is fixedly connected to the side frame, and the fixed gear ring is coaxially arranged with the first rotating shaft, the gear is meshingly connected with the fixed gear ring, a second rotating shaft is fixedly installed in the middle of the gear, and the second rotating shaft is rotatably connected to the outer wall of the pressure maintaining bin, the first transmission wheel is fixedly sleeved on the second rotating shaft, and a transmission belt is wound between the first transmission wheel and the second transmission wheel.

[0012] In this technical solution, the transmission mechanism uses the power provided by the rotation of the pressure-maintaining bin to operate the dragging mechanism.

[0013] Preferably, the dragging mechanism includes a winding wheel, a guide wheel and a pull rope; the winding wheel is connected to the second transmission wheel, one end of the pull rope is fixed to the winding wheel, a mounting frame is fixed to the top of the pressure keeping bin, the guide wheel is rotatably connected to the mounting frame, the pull rope passes around the guide wheel, and the end of the pull rope away from the winding wheel is connected to the sealing part.

[0014] In the technical solution, the dragging mechanism is used to drag the blocking part so that it enters from the bottom end of the feeding pipe to the top end.

[0015] Preferably, it also includes an injection and exhaust mechanism; the injection and exhaust mechanism includes a tube body, a cylinder and a second screw; the tube body is rotatably connected to the side frame, and the tube body is fixedly connected to the second transmission wheel and the winding wheel, the tube body, the second transmission wheel and the winding wheel are coaxially arranged, the cylinder body is fixedly connected to the end of the tube body, and a piston is matchedly connected to the cylinder body, the inner wall of the cylinder body and the side wall of the piston form a cavity, the tube body is communicated with the cavity, the second screw is rotatably connected to the side frame, and a rotating disk is fixedly installed on the end of the second screw, a nut is threadedly connected to the second screw, the nut is fixedly connected to a connecting frame, the connecting frame is rotatably connected to a connecting shaft, and the connecting shaft is fixedly connected to the piston.

[0016] In the present technical solution, the gas injection and exhaust mechanism is used to inject gas into or exhaust gas from the sealing part, thereby causing it to expand or contract.

[0017] Preferably, the pull rope and the sealing part are a hose and a soft ball respectively, a cavity connected to the tube body is arranged inside the reel, and the cavity is connected to the soft ball through the hose.

[0018] Preferably, the mounting mechanism comprises a plug-in column and a movable plate; the plug-in column is fixed to a side of the side frame close to the upper precast concrete wall, a slot is provided in the middle of the plug-in column, a movable column is slidably connected to the slot, the movable column is fixed to the movable plate, a sliding groove is provided on the side frame, the movable plate is slidably connected to the sliding groove, a first spring is installed between the movable plate and the side frame, a pressure block is provided in the slot, the pressure block is fixed to the movable column through a connecting rod, the cross-section of the pressure block is an isosceles trapezoidal structure, and the two sides of the pressure block respectively abut against A positioning column is connected, and the positioning column is slidably connected to the guide holes provided on both sides of the plug-in column. A groove is provided on the wall of the guide hole, and a second spring is arranged in the groove. The positioning column is fixedly connected to a connecting block, and the connecting block is connected to the second spring; the movable plate is fixedly connected to a compression rod, and the end of the compression rod away from the movable plate is bent downward; an installation groove is provided on the upper precast concrete wall, and an installation sleeve for inserting the plug-in column is fixedly installed in the installation groove, and a positioning groove for inserting the positioning column is provided on the inner wall of the installation sleeve.

[0019] In this technical solution, the mounting mechanism is used to be mounted on the upper precast concrete wall.

[0020] Preferably, the driving mechanism also includes a fixed cylinder, a movable rod and a first screw; the fixed cylinder is fixedly connected to the outer wall of the fixed shell, a fixed seat is fixedly installed on the outer wall of the fixed cylinder, and the fixed seat is fixedly connected to the side frame, the movable rod is connected with the fixed cylinder with a clearance fit, a guide bar is fixedly installed on the inner wall of the fixed cylinder, a guide groove is provided on the movable rod, the guide bar is slidably connected to the guide groove, a screw hole is provided along the length direction of the movable rod, the first screw is threadedly connected to the screw hole, one end of the first screw is fixed to the worm, and the end of the movable rod is fixedly connected to a push bar aligned with the bending portion of the compression rod.

[0021] In the technical solution, the driving mechanism drives the push bar to pull the pressure rod, thereby providing automatic release of positioning for the installation mechanism.

[0022] Preferably, the telescopic tube includes an end plate; the end plate is fixedly connected to the bottom end of the discharge pipe, the discharge pipe is connected to the joint through a corrugated hose, a third spring is installed between the joint and the end plate, a connecting seat is fixedly connected to the bottom of the joint, a pull rod is fixedly connected to the connecting seat, a guide seat is fixedly connected to the bottom of the end plate, the pull rod is gap-fittedly connected to a hole body opened on the guide seat, and a pull head is provided at the end of the pull rod away from the connecting seat.

[0023] In the technical solution, the telescopic tube can be inserted into or pulled out of the connecting pipe by the effect of telescoping.

[0024] The present invention also provides an installation and use method of a pressure-maintaining grouting mechanism of a concrete prefabricated wall grouting sleeve, and the specific steps are as follows: The motor drives the worm to rotate, and the meshing between the worm and the worm wheel causes the first rotating shaft to rotate, and the first rotating shaft drives the pressure-holding bin to rotate, so as to achieve adjustment. When the material is discharged into the lower feeding pipe, the blocking part is located at the bottom of the lower feeding pipe; when the pressure-holding bin is adjusted to the state where the bottom is tilted toward the discharge port, the pressure-holding bin rotates, so that the gear moves on the gear tooth surface, so that the gear, the second rotating shaft and the first transmission wheel rotate together, and the winding wheel rotates through the transmission of the first transmission wheel, the transmission belt and the second transmission wheel, and the winding wheel reels the pull rope, so that the pull rope pulls the blocking part from the bottom of the lower feeding pipe to the top, so that the residual material in the lower feeding pipe can be pushed into the pressure-holding bin in a concentrated manner during the adjustment of the pressure-holding bin. When the pressure-holding bin is adjusted to tilt toward the lower feeding pipe from the bottom, the pressure-holding bin rotates in the opposite direction, and through the above transmission, the winding wheel unwinds the pull rope, and the pressure provided by the material in the pressure-holding bin to the blocking part causes the blocking part to return to the bottom of the lower feeding pipe. When the pressure-maintaining chamber is adjusted to be inclined toward the discharge port, the grouting in the grouting sleeve is completed, and the valve can be opened by discharging the remaining slurry from the discharge port.

[0025] Preferably, the operation steps of the injection and exhaust mechanism are as follows: when the feed pipe is opened and the material enters the grouting sleeve, the plugging part is contracted, specifically by rotating the rotating disk in the forward direction to rotate the second screw, the second screw and the nut are threaded, the nut pulls the connecting shaft through the connecting frame, and the connecting shaft pulls the piston, so that the volume of the cavity surrounded by the piston and the inner wall of the cylinder increases, so that the gas in the plugging part enters the cavity through the hollow space in the hose and the reel, and the plugging part is contracted. The above process makes the piston flush with the end face of the cylinder, and the operation of canceling the blockage of the plugging part is completed. When the feed pipe is closed, the rotating disk is rotated in the reverse direction, and the piston is reset through the above transmission, and the piston fits the inner wall of the connecting end of the cylinder and the tube body, pushing the gas in the cavity into the plugging part, the plugging part expands, and the plugging part blocks the feed pipe. When the feed pipe discharges material into the grouting sleeve, the plugging of the feed pipe is canceled; in other states, the plugging and sealing are performed.

[0026] Preferably, when the pressure holding bin is adjusted to a state where the tilt of the lower material pipe is adjusted to a state where the tilt is toward the discharge port, the worm in the driving mechanism drives the first screw to rotate, and the first screw is threadedly screwed with the screw hole, and the movable rod drives the push rod to approach the bending portion of the pressure rod through the guidance of the guide bar and the guide groove, and the push bar pushes the pressure rod, and the pressure rod drives the movable plate to move, and the movable plate drives the movable column, the connecting rod and the pressure block to move, and at the same time stretches the first spring, the pressure block and the positioning column as shown in the figure, and the width of the pressure block gradually decreases in the direction away from the connecting rod. After the above movement, the positioning column is moved by the elastic force of the second spring, and the positioning column is always in contact with the pressure block, and the positioning column is pulled out of the positioning groove to cancel the positioning.

[0027] Preferably, the device of the present invention can be reused after disassembly, and the steps are as follows: when connecting the next precast concrete wall with the upper precast concrete wall, the material is loaded into the pressure-maintaining bin, and the plug-in column is inserted into the installation sleeve, and the motor in the driving mechanism drives the worm to rotate in the opposite direction, so that the movable rod and the push bar are reset, and the elastic force of the first spring is used to reset the movable plate, and the movable plate drives the movable column, the connecting rod and the pressure block to reset, and the pressure block pushes the movable column to be inserted into the positioning groove for positioning. At the same time, during the above positioning process, the pressure-maintaining bin is adjusted to be inclined toward the lower material pipe, and the dragging mechanism unwinds the draw rope.

[0028] Preferably, the telescopic tube is connected or separated from the connecting pipe in the following steps: before the pressure-keeping bin is rotated and adjusted, the telescopic tube is separated from the connecting pipe to avoid the connection between the two and affecting the rotation adjustment. Before the pressure-keeping bin is adjusted to be inclined toward the lower material pipe and grouting is poured into the grouting sleeve through the lower material pipe, the telescopic tube is connected to the connecting pipe.

[0029] Preferably, the telescopic tube operates as follows: by pulling the pull head, the pull rod drives the connecting seat or the joint to move together, the joint is pulled out of the connecting tube, and the third spring is compressed at the same time, and the magnetic block contacts the guide seat for magnetic attraction to maintain the contracted state, that is, separated from the connecting tube. By pushing the pull head, the magnetic block is separated from the guide seat, and the elastic force of the third spring allows the joint to enter the connecting tube for connection.

[0030] Preferably, the steps for connecting the upper precast concrete wall and the lower precast concrete wall are as follows: the material is discharged from the lower material pipe, the material enters the lower opening through the telescopic tube, and then enters the grouting sleeve, and the material in the grouting sleeve can enter the rubber frame between the upper precast concrete wall and the lower precast concrete wall; wherein the grouting is performed until the material flows out of the upper opening to complete the connection.

[0031] The positive and progressive effects of the present invention are: 1. Through the setting of the installation mechanism, the whole structure can be removed from the upper prefabricated concrete wall after use, so that the whole structure can be reused to avoid waste; 2. A plugging part is arranged in the feeding pipe, and the gap between the plugging part and the inner wall of the feeding pipe is adjustable, so that the opening and closing of the feeding pipe can be controlled. When grouting is required, the gap between the plugging part and the inner wall of the feeding pipe can be adjusted to the maximum. When grouting is not required, the plugging part and the inside of the feeding pipe are sealed; 3. A dragging mechanism is also provided. After the overall structure is used up, the blocking part can be pulled from the bottom end of the feeding pipe to the top end through the dragging mechanism, and the residual material in the feeding pipe can be pushed back into the pressure-maintaining bin, thus solving the problem that the residual material in the feeding pipe is difficult to be discharged and recycled; 4. The pressure-holding bin can be rotated and adjusted, and the bottom is tilted, which facilitates the switching of the material flow direction to the discharge port or the discharge pipe. The driving mechanism is used to drive the pressure-holding bin to rotate and adjust the angle. The transmission mechanism uses the power provided by the rotation of the pressure-holding bin to operate the dragging mechanism. The injection and exhaust mechanism is used to inject gas into or exhaust gas from the sealing part, thereby expanding or contracting it. The dragging mechanism is used to drag the sealing part so that the sealing part enters from the bottom end of the discharge pipe to the top end; 5. Corresponding installation mechanisms, positioning mechanisms and other auxiliary mechanisms are used to assist installation and disassembly, which greatly simplifies the installation operation and improves the convenience and safety of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 It is a side structural schematic diagram of the pressure-maintaining bin, the feeding pipe and the side frame of the present invention.

[0034] Figure 3 It is a schematic structural diagram of the side frame, mounting mechanism, dragging mechanism and transmission mechanism of the present invention.

[0035] Figure 4 It is a structural schematic diagram of the dragging mechanism and the feeding pipe of the present invention.

[0036] Figure 5 For the present invention Figure 4 Schematic diagram of the structure with the A part in the middle enlarged.

[0037] Figure 6 It is a structural schematic diagram of the transmission mechanism and the dragging mechanism of the present invention.

[0038] Figure 7 It is a structural schematic diagram of the winding wheel and the injection and exhaust mechanism of the present invention.

[0039] Figure 8 It is a structural schematic diagram of the telescopic tube of the present invention.

[0040] Fig. 9 It is a structural schematic diagram of the driving mechanism and the mounting mechanism of the present invention.

[0041] Fig.10 It is a schematic diagram of the structure inside the fixed cylinder of the present invention.

[0042] Fig.11 It is a structural schematic diagram of the installation mechanism of the present invention.

[0043] Fig.12 For the present invention Fig.11 Schematic diagram of the structure with the B part enlarged.

[0044] Fig.13It is a schematic diagram of the structure of the grouting sleeve of the present invention inside the lower precast concrete wall and the upper precast concrete wall.

[0045] Description of Reference Numerals 1. Lower precast concrete wall; 101. Lower steel bar section; 2. Upper precast concrete wall; 201. Installation groove; 202. Installation sleeve; 2021. Positioning groove; 203. Upper steel bar segment; 3. Rubber frame; 4. Grouting sleeve; 401. upper opening; 402. lower opening; 403. connecting pipe; 5. Pressure-maintaining bin; 501. Discharge port; 502. Valve; 6. side frame; 601. connecting strip; 602. slideway; 7. Installation mechanism; 701. Plug-in column; 7011. Guide hole; 7012. Groove; 702. Movable plate; 7021. Pressure rod; 703. Movable column; 704. First spring; 705. Connecting rod; 706. Pressing block; 707. Positioning column; 708. Connecting block; 709. Second spring; 8. Drag mechanism; 801. Guide wheel; 802. Pull rope; 8021. Blocking part; 803. Mounting frame; 804. Reel; 9. Feeding pipe; 10. Telescopic tube; 1001. End plate; 1002. Third spring; 1003. Joint; 1004. Corrugated hose; 1005. Connecting seat; 1006. Pull rod; 1007. Magnetic block; 1008. Guide seat; 1009. Pull head; 11. driving mechanism; 1101. motor; 1102. fixed housing; 1103. first rotating shaft; 1104. worm gear; 1105. worm; 1106. fixed cylinder; 1107. fixed seat; 1108. movable rod; 11081. guide groove; 11082. push bar; 11083. screw hole; 1109. first screw; 1110. guide bar; 12. Transmission mechanism; 1201. Fixed gear ring; 1202. Gear; 1203. First transmission wheel; 1204. Second rotating shaft; 1205. Transmission belt; 1206. Second transmission wheel; 13. Injection and exhaust mechanism; 1301. Cylinder; 1302. Tube; 1303. Piston; 1304. Connecting shaft; 1305. Connecting frame; 1306. Nut; 1307. Second screw; 1308. Rotating disk. DETAILED DESCRIPTION

[0046] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0047] like Figure 1-Figure 13 As shown, the pressure-maintaining grouting mechanism of the concrete precast wall grouting sleeve 4 includes a lower precast concrete wall 1 and an upper precast concrete wall 2; and also includes: a grouting sleeve 4, wherein an upper steel bar segment 203 and a lower steel bar segment 101 are respectively arranged in the upper precast concrete wall 2 and the lower precast concrete wall 1, wherein the grouting sleeve 4 is fixedly sleeved to the bottom end of the upper steel bar segment 203, and the top end of the lower steel bar segment 101 extends into the grouting sleeve 4; the grouting sleeve 4 is provided with an upper opening 401 and a lower opening 402, wherein both the upper opening 401 and the lower opening 402 extend to the outside of the upper precast concrete wall 2, and the lower opening 402 is connected to the upper precast concrete wall 2. There is a connecting pipe 403; a pressure-maintaining bin 5, which is connected to a side frame 6, and the side frame 6 can be detachably mounted on the outer wall of the upper precast concrete wall 2 through a mounting mechanism 7; one side of the bottom of the pressure-maintaining bin 5 is fixedly connected to a feed pipe 9, and the bottom end of the feed pipe 9 is connected to a telescopic tube 10 that can be pulled out or inserted from the port of the connecting pipe 403; a sealing part 8021, which is arranged in the feed pipe 9, and the gap between the sealing part 8021 and the inner wall of the feed pipe 9 is adjustable; a dragging mechanism 8, which is used to drive the sealing part 8021 to move in the feed pipe 9, and the dragging mechanism 8 is mounted on the side frame 6.

[0048] like Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Fig. 9 As shown, the number of the side frames 6 is two, the pressure-keeping bin 5 is rotatably installed between the two side frames 6, and a connecting strip 601 is fixedly installed between the two side frames 6; the top of the pressure-keeping bin 5 is open, the bottom of the pressure-keeping bin 5 is inclined to the horizontal plane, and a discharge port 501 is provided at the bottom of the side of the pressure-keeping bin 5 away from the discharge pipe 9, and a valve 502 is installed on the discharge port 501.

[0049] It also includes a driving mechanism 11, which includes a fixed shell 1102 fixedly mounted on the side frame 6 and a motor 1101 fixedly mounted on one side of the fixed shell 1102, a worm 1105 is rotatably mounted in the fixed shell 1102, one end of the worm 1105 is fixedly connected to the output shaft end of the motor 1101, the worm 1105 is meshingly connected to a worm wheel 1104, a first rotating shaft 1103 is fixedly mounted in the middle of the worm wheel 1104, the first rotating shaft 1103 is rotatably connected to the side frame 6, and the first rotating shaft 1103 is fixedly connected to the pressure holding chamber 5.

[0050] like Figure 2 As shown, the bottom of the pressure-maintaining bin 5 is in an inclined state, and the pressure-maintaining bin 5 can be rotated and adjusted, so that the bottom can be adjusted to be inclined toward the downward feeding pipe 9 or toward the discharge port 501.

[0051] The rotation adjustment is specifically as follows: the motor 1101 drives the worm 1105 to rotate, and the engagement between the worm 1105 and the worm wheel 1104 causes the first rotating shaft 1103 to rotate, and the first rotating shaft 1103 drives the pressure holding chamber 5 to rotate to achieve adjustment.

[0052] By tilting the downward material pipe 9 or tilting toward the discharge port 501 , it is convenient for materials to flow into the downward material pipe 9 or the discharge port 501 .

[0053] like Figure 3 and Figure 6 As shown, it also includes a transmission mechanism 12; the transmission mechanism 12 includes a fixed gear ring 1201, a gear 1202, a first transmission wheel 1203 and a second transmission wheel 1206; the fixed gear ring 1201 is fixedly connected to the side frame 6, and the fixed gear ring 1201 is coaxially arranged with the first rotating shaft 1103, the gear 1202 is meshingly connected with the fixed gear ring 1201, a second rotating shaft 1204 is fixedly installed in the middle of the gear 1202, and the second rotating shaft 1204 is rotatably connected to the outer wall of the pressure holding chamber 5, the first transmission wheel 1203 is fixedly sleeved on the second rotating shaft 1204, and a transmission belt 1205 is wound between the first transmission wheel 1203 and the second transmission wheel 1206.

[0054] The first transmission wheel 1203 and the second transmission wheel 1206 are synchronous wheels, and the transmission belt 1205 is a synchronous belt.

[0055] The dragging mechanism 8 includes a winding wheel 804, a guide wheel 801 and a pull rope 802; the winding wheel 804 is connected to the second transmission wheel 1206, one end of the pull rope 802 is fixed to the winding wheel 804, a mounting frame 803 is fixed to the top of the pressure keeping chamber 5, the guide wheel 801 is rotatably connected to the mounting frame 803, the pull rope 802 bypasses the guide wheel 801, and the end of the pull rope 802 away from the winding wheel 804 is connected to the blocking part 8021.

[0056] It should be noted that, when the material is discharged into the downward feed pipe 9, the pressure-maintaining bin 5 is Figure 2 As shown, at this time, the blocking portion 8021 is located at the bottom end of the discharge pipe 9; in the process of adjusting the pressure holding bin 5 to a state in which the bottom is inclined toward the discharge port 501, the pressure holding bin 5 rotates, so that the gear 1202 runs on the tooth surface of the gear 1202, thereby causing the gear 1202, the second rotating shaft 1204 and the first transmission wheel 1203 to rotate together, and through the transmission of the first transmission wheel 1203, the transmission belt 1205 and the second transmission wheel 1206, the winding wheel 804 rotates, and the winding wheel 804 winds up the pull rope 802, so that the pull rope 802 pulls the blocking portion 8021 to move from the bottom end of the discharge pipe 9 to the top end, so that in the process of adjusting the pressure holding bin 5, the residual material in the discharge pipe 9 can be pushed into the pressure holding bin 5.

[0057] When the pressure-keeping bin 5 is adjusted to tilt its bottom toward the downward material pipe 9 , the pressure-keeping bin 5 rotates in the opposite direction. Through the above-mentioned transmission, the reel 804 unwinds the pull rope 802 , and the material in the pressure-keeping bin 5 provides pressure for the sealing part 8021 , causing the sealing part 8021 to return to the bottom end of the downward material pipe 9 .

[0058] When the pressure-maintaining chamber 5 is adjusted to be inclined toward the discharge port 501 , the grouting in the grouting sleeve 4 is completed, and the valve 502 can be opened by discharging the remaining slurry from the discharge port 501 .

[0059] In a specific implementation, it also includes an injection and exhaust mechanism 13; the injection and exhaust mechanism 13 includes a tube body 1302, a cylinder body 1301 and a second screw 1307; the tube body 1302 is rotatably connected to the side frame 6, and the tube body 1302 is fixedly connected to the second transmission wheel 1206 and the winding wheel 804, the tube body 1302, the second transmission wheel 1206 and the winding wheel 804 are coaxially arranged, the cylinder body 1301 is fixedly connected to the end of the tube body 1302, and a piston 1303 is matched and connected in the cylinder body 1301 The inner wall of the cylinder 1301 and the side wall of the piston 1303 form a cavity, the tube body 1302 is connected to the cavity, the second screw 1307 is rotatably connected to the side frame 6, and a rotating disk 1308 is fixedly installed on the end of the second screw 1307, a nut 1306 is threadedly connected to the second screw 1307, the nut 1306 is fixedly connected to a connecting frame 1305, the connecting frame 1305 is rotatably connected to a connecting shaft 1304, and the connecting shaft 1304 is fixedly connected to the piston 1303.

[0060] The pull rope 802 and the blocking part 8021 are a hose and a soft ball respectively. A cavity communicating with the tube body 1302 is provided inside the reel 804, and the cavity is communicated with the soft ball through the hose.

[0061] The injection and exhaust mechanism 13 controls the gap with the inner wall of the feed pipe 9 by injecting gas into the sealing part 8021 to make it expand, or exhausting gas to make it contract.

[0062] When the feed pipe 9 is opened to allow the material to enter the grouting sleeve 4, the sealing part 8021 is contracted. Specifically, the second screw 1307 is rotated by rotating the rotating disk 1308 in the forward direction. The second screw 1307 and the nut 1306 are threaded, and the nut 1306 pulls the connecting shaft 1304 through the connecting frame 1305. The connecting shaft 1304 pulls the piston 1303, so that the volume of the cavity surrounded by the piston 1303 and the inner wall of the cylinder 1301 increases, so that the gas in the sealing part 8021 enters the cavity through the cavity in the hose and the winding wheel 804, so that the sealing part 8021 shrinks. The above process makes the piston 1303 flush with the end face of the cylinder 1301, and the operation of canceling the blockage of the sealing part 8021 is completed.

[0063] When the discharge pipe 9 is closed, the rotating disk 1308 is rotated in the reverse direction and the piston 1303 is reset through the above-mentioned transmission. The piston 1303 fits against the inner wall of the connecting end of the cylinder 1301 and the tube body 1302, pushing the gas in the cavity into the sealing part 8021, which expands and seals the discharge pipe 9.

[0064] When the material is discharged from the feed pipe 9 into the grouting sleeve 4, the blocking of the feed pipe 9 is cancelled; in other states, the blocking and sealing are performed.

[0065] like Figure 9-12 As shown, the installation mechanism 7 includes a plug-in column 701 and a movable plate 702; the plug-in column 701 is fixed to a side of the side frame 6 close to the upper precast concrete wall 2, a slot body is provided in the middle of the plug-in column 701, and a movable column 703 is slidably connected to the slot body, the movable column 703 is fixed to the movable plate 702, a sliding groove 602 is provided on the side frame 6, the movable plate 702 is slidably connected to the sliding groove 602, a first spring 704 is installed between the movable plate 702 and the side frame 6, a pressure block 706 is provided in the slot body, the pressure block 706 is fixed to the movable column 703 through a connecting rod 705, the cross-section of the pressure block 706 is an isosceles trapezoidal structure, and positioning columns 707 are respectively abutted on both sides of the pressure block 706, The positioning column 707 is slidably connected with the guide holes 7011 provided on both sides of the plug-in column 701, and a groove 7012 is provided on the wall of the guide hole 7011, and a second spring 709 is arranged in the groove 7012. The positioning column 707 is fixedly connected with a connecting block 708, and the connecting block 708 is connected with the second spring 709; the movable plate 702 is fixedly connected with a compression rod 7021, and the end of the compression rod 7021 away from the movable plate 702 is bent downward; an installation groove 201 is provided on the wall of the upper precast concrete wall 2, and an installation sleeve 202 for inserting the plug-in column 701 is fixedly installed in the installation groove 201, and a positioning groove 2021 for inserting the positioning column 707 is provided on the inner wall of the installation sleeve 202.

[0066] The driving mechanism 11 also includes a fixed cylinder 1106, a movable rod 1108 and a first screw 1109; the fixed cylinder 1106 is fixedly connected to the outer wall of the fixed shell 1102, a fixed seat 1107 is fixedly installed on the outer wall of the fixed cylinder 1106, and the fixed seat 1107 is fixedly connected to the side frame 6, the movable rod 1108 is connected with the fixed cylinder 1106 with a clearance fit, a guide bar 1110 is fixedly installed on the inner wall of the fixed cylinder 1106, a guide groove 11081 is provided on the movable rod 1108, the guide bar 1110 is slidably connected to the guide groove 11081, the movable rod 1108 is provided with a screw hole 11083 along the length direction, the first screw 1109 is threadedly connected to the screw hole 11083, one end of the first screw 1109 is fixedly connected to the worm 1105, and the end of the movable rod 1108 is fixedly connected to a push bar 11082 aligned with the bent portion of the pressure rod 7021.

[0067] The first screw rod 1109 and the screw hole 11083 have external threads and internal threads respectively.

[0068] In the process of adjusting the inclined state of the pressure-holding bin 5 to the lower material pipe 9 to the discharge port 501, the worm 1105 in the driving mechanism 11 drives the first screw 1109 to rotate, and the first screw 1109 and the screw hole 11083 are screwed, and the movable rod 1108 drives the push bar 11082 to approach the bending part of the pressure rod 7021 through the guidance of the guide bar 1110 and the guide groove 11081, and the push bar 11082 pushes the pressure rod 7021, and the pressure rod 7021 drives the movable plate 702 to move, and the movable plate 702 drives the movable column 703, the connecting rod 705 and the pressure block 706 to move, and at the same time stretches the first spring 704, the pressure block 706 and the positioning column 707 as shown in FIG. Fig.11 As shown, the width of the pressing block 706 gradually decreases in the direction away from the connecting rod 705. After the above movement, the positioning column 707 is moved by the elastic force of the second spring 709, and the positioning column 707 is always in contact with the pressing block 706. The positioning column 707 is pulled out of the positioning groove 2021 to cancel the positioning.

[0069] During the above-mentioned process of canceling the positioning, the pressure-maintaining bin 5 is manually supported to prevent the pressure-maintaining bin 5 from falling after the positioning is released.

[0070] Through the above design, automatic positioning is achieved. After the residual material in the pressure-maintaining bin 5 is discharged from the discharge port 501 , the plug-in column 701 can be pulled out from the installation sleeve 202 .

[0071] After disassembly, it can be reused. When the next precast concrete wall 1 is connected to the upper precast concrete wall 2, the material is loaded into the pressure-maintaining bin 5, and the plug-in column 701 is inserted into the installation sleeve 202, and the motor 1101 in the driving mechanism 11 drives the worm 1105 to rotate in the opposite direction, so that the movable rod 1108 and the push bar 11082 are reset to the position as shown in the figure. Fig. 9 As shown, the movable plate 702 is reset by the elastic force of the first spring 704, and the movable plate 702 drives the movable column 703, the connecting rod 705 and the pressing block 706 to reset, and the pressing block 706 pushes the movable column 703 to be inserted into the positioning groove 2021 for positioning.

[0072] At the same time, during the above positioning process, the pressure-maintaining bin 5 is adjusted to be inclined toward the lower material pipe 9 , and the dragging mechanism 8 unwinds the draw rope 802 .

[0073] The motor 1101 is preferably a servo motor 1101, which requires an external power supply and a control switch when in use.

[0074] like Figure 8 As shown, the telescopic tube 10 includes an end plate 1001; the end plate 1001 is fixedly connected to the bottom end of the discharge pipe 9, and the discharge pipe 9 is connected to the joint 1003 through a corrugated hose 1004, and a third spring 1002 is installed between the joint 1003 and the end plate 1001, and a connecting seat 1005 is fixedly connected to the bottom of the joint 1003, and a pull rod 1006 is fixedly connected to the connecting seat 1005, and a guide seat 1008 is fixedly connected to the bottom of the end plate 1001, and the pull rod 1006 is connected with a clearance fit of a hole body opened on the guide seat 1008, and a pull head 1009 is provided at the end of the pull rod 1006 away from the connecting seat 1005; a magnetic suction block 1007 is fixedly installed on the pull rod 1006, and the magnetic suction block 1007 can be magnetically attracted to the guide seat 1008.

[0075] The telescopic tube 10 can be connected to or separated from the connecting tube 403 by design.

[0076] Before the pressure-maintaining bin 5 is rotated and adjusted, the telescopic tube 10 is separated from the connecting pipe 403 to avoid the two being connected and affecting the rotation adjustment. Before the pressure-maintaining bin 5 is adjusted to be inclined toward the lower feed pipe 9 and grouting is performed into the grouting sleeve 4 through the lower feed pipe 9, the telescopic tube 10 is connected to the connecting pipe 403.

[0077] The specific operation of the telescopic tube 10 is as follows: by pulling the pull head 1009, the pull rod 1006 drives the connecting seat 1005 or the joint 1003 to move together, and the joint 1003 is pulled out from the connecting pipe 403, and at the same time the third spring 1002 is compressed. At the same time, the magnetic block 1007 contacts the guide seat 1008 for magnetic attraction to maintain the contracted state, that is, separated from the connecting pipe 403.

[0078] By pushing the pull head 1009, the magnetic block 1007 is separated from the guide seat 1008, and the elastic force of the third spring 1002 allows the connector 1003 to enter the connecting pipe 403 for connection.

[0079] The corrugated hose 1004 is made of plastic and can be folded and retracted.

[0080] When the upper precast concrete wall 2 and the lower precast concrete wall 1 are connected, the material is discharged from the discharge pipe 9, and the material enters the lower opening 402 through the telescopic tube 10, and then enters the grouting sleeve 4. The material in the grouting sleeve 4 can enter the rubber frame 3 between the upper precast concrete wall 2 and the lower precast concrete wall 1; the material flows out of the upper opening 401 after grouting, and the connection is completed.

[0081] In summary, the present invention has been described in detail. However, those skilled in the art will appreciate that the present invention may be modified and altered in various ways. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of this application shall fall within the scope of protection of the present invention, and the protection scope of the present invention shall be defined by the appended claims.

Claims

1. A pressure-maintaining grouting mechanism for a precast concrete wall grouting sleeve, comprising a lower precast concrete wall (1) and an upper precast concrete wall (2); characterized in that: Also includes: A grouting sleeve (4), wherein an upper steel bar segment (203) and a lower steel bar segment (101) are respectively arranged in the upper precast concrete wall (2) and the lower precast concrete wall (1), the grouting sleeve (4) is fixedly sleeved to the bottom end of the upper steel bar segment (203), and the top end of the lower steel bar segment (101) extends into the grouting sleeve (4); The grouting sleeve (4) is provided with an upper opening (401) and a lower opening (402), wherein the upper opening (401) and the lower opening (402) both extend to the outside of the upper precast concrete wall (2), and the lower opening (402) is connected to a connecting pipe (403); A pressure-maintaining bin (5), the pressure-maintaining bin (5) being connected to a side frame (6), the side frame (6) being detachably mounted on the outer wall of the upper precast concrete wall (2) via a mounting mechanism (7), a bottom side of the pressure-maintaining bin (5) being fixedly connected to a feed pipe (9), the bottom end of the feed pipe (9) being connected to a telescopic pipe (10) that can be pulled out of or inserted into a port of a connecting pipe (403); A blocking portion (8021), wherein the blocking portion (8021) is disposed in the feed tube (9), and a gap between the blocking portion (8021) and an inner wall of the feed tube (9) is adjustable; A dragging mechanism (8), wherein the dragging mechanism (8) is used to drive the blocking portion (8021) to move in the discharge pipe (9), and the dragging mechanism (8) is mounted on the side frame (6).

2. The pressure-maintaining grouting mechanism of the concrete prefabricated wall grouting sleeve according to claim 1, characterized in that: The number of the side frames (6) is two, the pressure-maintaining bin (5) is rotatably mounted between the two side frames (6), and a connecting strip (601) is fixedly mounted between the two side frames (6); the top of the pressure-maintaining bin (5) is open, the bottom of the pressure-maintaining bin (5) is inclined with respect to a horizontal plane, and a discharge port (501) is arranged at the bottom of a side of the pressure-maintaining bin (5) away from the discharge pipe (9), and a valve (502) is mounted on the discharge port (501).

3. The pressure-maintaining grouting mechanism of the concrete prefabricated wall grouting sleeve according to claim 2, characterized in that: The invention also comprises a driving mechanism (11), the driving mechanism (11) comprising a fixed shell (1102) fixedly mounted on the side frame (6) and a motor (1101) fixedly mounted on one side of the fixed shell (1102), a worm (1105) rotatably mounted in the fixed shell (1102), one end of the worm (1105) being fixedly connected to the output shaft end of the motor (1101), the worm (1105) being meshingly connected to a worm wheel (1104), a first rotating shaft (1103) being fixedly mounted in the middle of the worm wheel (1104), the first rotating shaft (1103) being rotatably connected to the side frame (6), and the first rotating shaft (1103) being fixedly connected to the pressure-maintaining chamber (5).

4. The pressure-maintaining grouting mechanism of the concrete prefabricated wall grouting sleeve according to claim 3, characterized in that: The invention also comprises a transmission mechanism (12); the transmission mechanism (12) comprises a fixed gear ring (1201), a gear (1202), a first transmission wheel (1203) and a second transmission wheel (1206); the fixed gear ring (1201) is fixedly connected to the side frame (6), and the fixed gear ring (1201) is coaxially arranged with the first rotating shaft (1103); the gear (1202) is meshingly connected with the fixed gear ring (1201); a second rotating shaft (1204) is fixedly mounted in the middle of the gear (1202), and the second rotating shaft (1204) is rotatably connected to the outer wall of the pressure-maintaining chamber (5); the first transmission wheel (1203) is fixedly sleeved on the second rotating shaft (1204), and a transmission belt (1205) is wound between the first transmission wheel (1203) and the second transmission wheel (1206).

5. The pressure-maintaining grouting mechanism of the concrete prefabricated wall grouting sleeve according to claim 4, characterized in that: The dragging mechanism (8) comprises a winding wheel (804), a guide wheel (801) and a pull rope (802); the winding wheel (804) is connected to the second transmission wheel (1206); one end of the pull rope (802) is fixed to the winding wheel (804); a mounting frame (803) is fixed to the top of the pressure-maintaining bin (5); the guide wheel (801) is rotatably connected to the mounting frame (803); the pull rope (802) passes around the guide wheel (801); and one end of the pull rope (802) away from the winding wheel (804) is connected to the blocking portion (8021).

6. The pressure-maintaining grouting mechanism of the concrete prefabricated wall grouting sleeve according to claim 5, characterized in that: The invention also comprises an injection and exhaust mechanism (13); the injection and exhaust mechanism (13) comprises a tube body (1302), a cylinder body (1301) and a second screw rod (1307); the tube body (1302) is rotatably connected to the side frame (6), and the tube body (1302) is fixedly connected to the second transmission wheel (1206) and the winding wheel (804); the tube body (1302), the second transmission wheel (1206) and the winding wheel (804) are coaxially arranged; the cylinder body (1301) is fixedly connected to the end of the tube body (1302), and a piston (1303) is matched and connected inside the cylinder body (1301); The inner wall of the cylinder (1301) and the side wall of the piston (1303) form a cavity, the tube (1302) is connected to the cavity, the second screw (1307) is rotatably connected to the side frame (6), and a rotating disk (1308) is fixedly installed on the end of the second screw (1307), a nut (1306) is threadedly connected to the second screw (1307), the nut (1306) is fixedly connected to a connecting frame (1305), the connecting frame (1305) is rotatably connected to a connecting shaft (1304), and the connecting shaft (1304) is fixedly connected to the piston (1303).

7. The pressure-maintaining grouting mechanism of the concrete prefabricated wall grouting sleeve according to claim 5, characterized in that: The pull rope (802) and the blocking portion (8021) are respectively a hose and a soft ball; a cavity communicating with the tube body (1302) is provided inside the reel (804); the cavity is communicated with the soft ball via the hose.

8. The pressure-maintaining grouting mechanism of the concrete prefabricated wall grouting sleeve according to claim 3, characterized in that: The mounting mechanism (7) comprises a plug-in column (701) and a movable plate (702); the plug-in column (701) is fixedly connected to a side of the side frame (6) close to the upper precast concrete wall (2); a slot body is provided in the middle of the plug-in column (701); a movable column (703) is slidably connected to the slot body; the movable column (703) is fixedly connected to the movable plate (702); a sliding groove (602) is provided on the side frame (6); the movable plate (702) is slidably connected to the sliding groove (602); a first spring (704) is installed between the movable plate (702) and the side frame (6); a pressing block (706) is provided in the slot body; the pressing block (706) is fixedly connected to the movable column (703) via a connecting rod (705); the cross section of the pressing block (706) is an isosceles trapezoidal structure; and positioning columns (707) are respectively abutted on both sides of the pressing block (706). The positioning column (707) is slidably connected to the guide holes (7011) provided on both sides of the plug-in column (701); a groove (7012) is provided on the wall of the guide hole (7011); a second spring (709) is arranged in the groove (7012); a connecting block (708) is fixedly connected to the positioning column (707); and the connecting block (708) is connected to the second spring (709); a compression rod (7021) is fixedly connected to the movable plate (702); an end of the compression rod (7021) away from the movable plate (702) is bent downward; a mounting groove (201) is provided on the wall of the upper precast concrete wall (2); a mounting sleeve (202) for inserting the plug-in column (701) is fixedly installed in the mounting groove (201); and a positioning groove (2021) for inserting the positioning column (707) is provided on the inner wall of the mounting sleeve (202).

9. The pressure-maintaining grouting mechanism of the concrete prefabricated wall grouting sleeve according to claim 8, characterized in that: The driving mechanism (11) further comprises a fixed cylinder (1106), a movable rod (1108) and a first screw rod (1109); the fixed cylinder (1106) is fixedly connected to the outer wall of the fixed shell (1102); a fixed seat (1107) is fixedly mounted on the outer wall of the fixed cylinder (1106); the fixed seat (1107) is fixedly mounted to the side frame (6); the movable rod (1108) is connected to the fixed cylinder (1106) with a clearance fit; and a guide bar (1110) is fixedly mounted on the inner wall of the fixed cylinder (1106). A guide groove (11081) is provided on the movable rod (1108), the guide bar (1110) is slidably connected to the guide groove (11081), a screw hole (11083) is provided on the movable rod (1108) along the length direction, the first screw rod (1109) is threadedly connected to the screw hole (11083), one end of the first screw rod (1109) is fixedly connected to the worm (1105), and a push bar (11082) aligned with the bent portion of the pressure rod (7021) is fixedly connected to the end of the movable rod (1108).

10. The pressure-maintaining grouting mechanism of the concrete prefabricated wall grouting sleeve according to claim 1, characterized in that: The telescopic tube (10) comprises an end plate (1001); the end plate (1001) is fixedly connected to the bottom end of a feed tube (9); the feed tube (9) is connected to a joint (1003) via a corrugated hose (1004); a third spring (1002) is installed between the joint (1003) and the end plate (1001); a connecting seat (1005) is fixedly connected to the bottom of the joint (1003); a pull rod (1006) is fixedly connected to the connecting seat (1005); a guide seat (1008) is fixedly connected to the bottom of the end plate (1001); the pull rod (1006) is connected to a hole body provided on the guide seat (1008) by gap fit; and a pull head (1009) is provided at one end of the pull rod (1006) away from the connecting seat (1005).

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