Concrete construction quantitative grouting machine

Abstract

The application relates to the technical field of concrete conveying equipment, and discloses a concrete construction quantitative grouting machine, which comprises a box body, a suction cylinder is arranged on one side of the box body, an oil cylinder for driving the reciprocating movement of an inner piston of the suction cylinder is arranged on one side of the suction cylinder, a first L-shaped pipe and a second L-shaped pipe are fixedly installed on one side in the box body, the inner cavities of the first L-shaped pipe and the second L-shaped pipe are respectively communicated with the inner cavities of the two suction cylinders, rotating pipe assemblies are respectively fixedly connected to the top ends of the first L-shaped pipe and the second L-shaped pipe, and a pipeline switching device located above the liquid level of concrete slurry is arranged at the top of the inner cavity of the box body. Through the structural design of the pipeline switching device arranged above the liquid level of concrete slurry in the box body and cooperating with the rotating pipe assemblies, when the second through groove rotates to coincide with the first through groove, the concrete slurry in the positioning connecting pipe and the second through groove can be obviously reduced under the action of gravity, so that the risk that the concrete blocks the complete coincidence of the second through groove and the first through groove can be obviously reduced.

Description

Technical Field

[0001] This application relates to the field of concrete conveying equipment technology, and in particular to a concrete construction quantitative grouting machine. Background Technology

[0002] Concrete grouting is a key process in engineering projects such as building foundation reinforcement, tunnel lining, foundation pit backfilling, and grouting of prefabricated components. Existing large-scale pump-type concrete grouting (jetting) machines often adopt a reciprocating piston type, which uses pistons in two suction cylinders to move back and forth under the drive of the hydraulic cylinder output shaft to perform suction and discharge of mud respectively. With the switching of the flow channel by the S valve, continuous delivery and quantitative output of grout can be achieved. It can be adapted to various concrete grouts such as cement slurry and cement mortar to meet the needs of precise grouting operations under different working conditions.

[0003] For example, Chinese invention patent application number 2022108946548 discloses a concrete spraying machine for construction engineering, which is used for spraying and grouting concrete. It discloses that the flow channel is switched by controlling the rotation of the S-shaped tube in the material box. Chinese utility model patent application number 2009200891119 discloses a split S-shaped distribution valve for a piston-type concrete spraying machine, which also switches the flow channel by rotating the S-shaped distribution valve.

[0004] However, in the use of existing concrete grouting equipment, the S-valve is always located below the surface of the concrete grout. This makes it easy for sand and gravel in the concrete grout to get stuck at the pipe opening when the S-valve is rotated to switch the flow channel, resulting in the S-valve not being able to completely cover the pipe opening, thus affecting the grouting process. Summary of the Invention

[0005] This application proposes a concrete quantitative grouting machine, which has the advantages of reducing the risk of flow channel switching being blocked and achieving efficient and continuous quantitative grouting. It solves the problem that existing concrete grouting equipment is prone to having its pipe opening blocked by sand and gravel in the concrete during the flow channel switching of the S valve.

[0006] To achieve the above objectives, this application adopts the following technical solution: a concrete quantitative grouting machine, comprising a housing, a sludge suction cylinder on one side of the housing, and a hydraulic cylinder on one side of the sludge suction cylinder to drive the reciprocating movement of its internal piston. A first L-shaped pipe and a second L-shaped pipe are fixedly installed on one side of the interior of the housing, the inner cavities of the first and second L-shaped pipes respectively communicating with the inner cavities of the two sludge suction cylinders. Rotary pipe assemblies are fixedly connected to the top ends of the first and second L-shaped pipes respectively. A pipeline exchange device located above the concrete slurry surface is provided at the top of the interior cavity of the housing. The pipeline exchange device includes a fixedly installed positioning... The top of the positioning plate is rotatably connected to a rotating plate, which is driven to rotate by a servo motor mounted on the housing. The top two sides of the positioning plate are fixedly connected to one end of two rotating tube assemblies, respectively. The bottom of the positioning plate is fixedly connected to an inlet pipe and an outlet pipe. The bottom end of the inlet pipe has an inlet groove near the bottom of the housing cavity. The other side of the housing is fixedly connected to a mud output pipe that is connected to the outlet pipe. The servo motor drives the rotating plate to rotate half a circle relative to the positioning plate, repeatedly changing the connection state between the inlet pipe, the outlet pipe and the first L-shaped pipe and the second L-shaped pipe, so that the mud output pipe continuously delivers concrete slurry for grouting.

[0007] Furthermore, the bottom of the inner cavity of the box is designed with a slope, and the feed chute is close to the lowest point of the inner cavity of the box. By controlling the piston in the suction cylinder to move away from the box, negative pressure is created so that the concrete slurry in the box can enter the feed pipe through the feed chute. Then, by the piston in the suction cylinder moving towards the box, the suctioned concrete slurry can be discharged through the mud output pipe, thereby minimizing the amount of concrete slurry residue in the box in the final stage.

[0008] Furthermore, a rotating tube assembly includes two rotating joints. One rotating joint is fixedly connected to the top end of a first L-shaped tube, and the other rotating joint is fixedly connected to the top end of a second L-shaped tube. The rotating ends of the two rotating joints are respectively fixedly connected to arc-shaped tubes. One arc-shaped tube is fixedly connected to an outer guide tube at the end away from the rotating joint, and the other arc-shaped tube is fixedly connected to an inner guide tube at the end away from the rotating joint. The movable connection between the inner guide tube and the outer guide tube is provided with a sealing ring for sealing. The bottom end of the other rotating joint is fixedly connected to a positioning connecting tube, and the bottom end of the positioning connecting tube is fixedly connected to the top of the rotating plate. Through the connection design of the two rotating joints, in conjunction with the telescopic tube formed by the inner and outer guide tubes, the servo motor can drive the rotating plate to rotate relative to the positioning plate.

[0009] Furthermore, the positioning plate has two first through slots, and the rotating plate has two second through slots that are respectively connected to the positioning connecting pipes. The two first through slots are respectively connected to the two second through slots. One of the first through slots and the second through slot are connected to the inner cavity of the feeding pipe, and the other of the first through slots and the second through slot are connected to the inner cavity of the discharge pipe. After the rotating plate rotates half a turn relative to the positioning plate, one of the positioning connecting pipes is connected to the discharge pipe, and the other positioning connecting pipe is connected to the feeding pipe.

[0010] Furthermore, a sealing ring is provided in the second through groove, and the bottom of the sealing ring is movably fitted with the top of the positioning plate, thereby sealing the connection between the first through groove and the second through groove. When the positioning plate rotates relative to the rotating plate, it ensures that the concrete slurry will not seep through the gap between the positioning plate and the rotating plate.

[0011] Furthermore, the pipeline exchange device includes a circular groove on the top of the positioning plate, and the rotating plate is movably fitted into the circular groove. The circular groove limits the circumference of the rotating plate, ensuring that the rotating plate can rotate stably relative to the positioning plate.

[0012] Furthermore, support vertical plates are fixedly installed on both sides of the top of the housing, and a carrier plate located above the rotating tube assembly is fixedly installed on the top of the support vertical plates. The servo motor is fixedly installed on the carrier plate so that the servo motor is supported by the support vertical plates and the carrier plate, ensuring that the servo motor can stably drive the output shaft to drive the positioning plate to rotate relative to the rotating plate.

[0013] Furthermore, two symmetrical limiting rods are fixedly installed on the outer edge of the top of the rotating plate, and a limiting plate is fixedly installed on the top of the two limiting rods. The top of the limiting plate is movably connected to the bottom of the carrier plate through a plane bearing. A linkage shaft is fixedly connected to the middle of the top of the rotating plate, and the top of the linkage shaft is fixedly connected to the output shaft of the servo motor. When the servo motor drives the output shaft to rotate the linkage shaft, it can drive the rotating plate to rotate relative to the positioning plate. Furthermore, the connection between the limiting plate and the positioning plate through the limiting rods, combined with the connection between the carrier plate and the limiting plate through the plane bearing, further improves the stability of the positioning plate's rotation relative to the rotating plate.

[0014] The beneficial effects of this invention are as follows: 1. The concrete quantitative grouting machine provided in this application, through the structural design of the pipeline exchange device set above the concrete slurry surface in the box and the rotating pipe assembly, when the second through slot rotates with the positioning plate to coincide with the first through slot, the concrete slurry in the positioning connecting pipe and the second through slot can significantly reduce the risk of concrete blocking the second through slot from completely coinciding with the first through slot under the action of gravity. During grouting, compared with the existing piston-type concrete grouting equipment, where the pipe opening is easily blocked by sand and gravel in the concrete due to the change of position of the S-type distribution valve in the concrete slurry, this concrete quantitative grouting machine is beneficial to continuous and efficient grouting.

[0015] 2. The structural design of the pipeline exchange device set above the concrete slurry surface inside the box, combined with the rotating pipe assembly, and the servo motor driving the rotating plate to rotate relative to the positioning plate, reciprocates to change the connection state of the feed pipe, discharge pipe, and the first and second L-shaped pipes. Even when the second channel and the first channel are not completely aligned due to blockage, normal grouting can still be performed, and the grouting volume in each stroke of the piston in the suction cylinder remains the same. Compared with the existing grouting equipment where the S-type distribution valve gets stuck when changing position in the concrete slurry, and some slurry returns to the box through the gap during the grouting stage, this design can stably ensure the quantitative grouting of the grouting machine. Furthermore, when the second channel and the first channel are not completely aligned due to blockage, the flow rate change of the slurry suction and discharge can be used to detect the blockage in a timely manner by installing pressure sensors inside the two suction cylinders and the oil cylinder. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Schematic diagram of the internal structure of the middle box; Figure 3 for Figure 2 Schematic diagram of the connection structure between the rotating tube assembly and the pipeline exchange device; Figure 4 for Figure 3 Top view; Figure 5 for Figure 3 Schematic diagram of the separation state of the external and internal catheters; Figure 6 for Figure 3 A schematic diagram of the cross-sectional structure of the center positioning plate.

[0017] In the diagram: 1. Support base; 2. Box body; 3. Sludge suction cylinder; 4. Oil cylinder; 5. First L-shaped pipe; 6. Second L-shaped pipe; 7. Rotary pipe assembly; 701. Rotary joint; 702. Arc-shaped pipe; 703. Outer guide pipe; 704. Inner guide pipe; 705. Positioning connecting pipe; 8. Pipeline exchange device; 801. Positioning plate; 8011. First through groove; 802. Rotating plate; 8021. Second through groove; 803. Sealing ring; 804. Feed pipe; 8041. Feed trough; 805. Discharge pipe; 9. Support horizontal plate; 10. Sludge output pipe; 11. Support vertical plate; 12. Carrier plate; 13. Servo motor; 14. Limiting rod; 15. Limiting plate; 16. Linkage shaft. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Examples, such as Figures 1-2 A concrete quantitative grouting machine includes a support base 1, a box body 2 fixedly installed at one end of the top of the support base 1, a suction cylinder 3 fixedly installed on one side of the box body 2, and a piston movable inside the suction cylinder 3 (the piston inside the cylinder has a known existing structure). Figure 1 (Not shown in the image) A hydraulic cylinder 4 is provided on one side of the sludge suction cylinder 3 to drive the piston to move back and forth. The two hydraulic cylinders 4 drive the pistons in the two sludge suction cylinders 3 to move alternately, so that the two sludge suction cylinders 3 alternately suck the sludge inside the box 2 and discharge the sludge inside the sludge suction cylinder 3.

[0020] A first L-shaped tube 5 and a second L-shaped tube 6 are fixedly installed on one side of the interior of the housing 2. The inner cavities of the first L-shaped tube 5 and the second L-shaped tube 6 are respectively connected to the inner cavities of the two sludge suction cylinders 3. The top ends of the first L-shaped tube 5 and the second L-shaped tube 6 are respectively connected to a rotating tube assembly 7, such as... Figures 2-5A rotating tube assembly 7 includes two rotating joints 701. One rotating joint 701 is fixedly connected to the top end of the first L-shaped tube 5, and the other rotating joint 701 is fixedly connected to the top end of the second L-shaped tube 6. The rotating ends of the two rotating joints 701 are respectively fixedly connected to arc-shaped tubes 702. One arc-shaped tube 702 is fixedly connected to an outer conduit 703 at the end away from the rotating joint 701, and the other arc-shaped tube 702 is fixedly connected to an inner conduit 704 at the end away from the rotating joint 701. The inner conduit 704 and the outer conduit 703 are movably sleeved together, so that the inner conduit 704 and the outer conduit 703 form a telescopic tube as a whole. The movable connection part of the inner conduit 704 and the outer conduit 703 is provided with a sealing ring for sealing. The bottom end of the other rotating joint 701 is fixedly connected to a positioning connecting tube 705.

[0021] like Figures 2-6 A pipeline exchange device 8 is installed at the center of the top of the inner cavity of the housing 2. The pipeline exchange device 8 includes a positioning plate 801. A supporting horizontal plate 9 is installed at the center of the bottom of the positioning plate 801. The two ends of the supporting horizontal plate 9 are fixedly connected to the inner walls of both sides of the housing 2, respectively. The supporting horizontal plate 9 provides stable support for the positioning plate 801. A circular groove is opened at the top of the positioning plate 801. A rotating plate 802 is movably fitted in the circular groove. The outer edge of the top of the rotating plate 802 is fixedly connected to the bottom of two positioning connecting pipes 705. The rotating plate 802 has two second through slots 8021 that are respectively connected to the positioning connecting pipes 705. The positioning plate 801 has two first through slots 8011. 1. The bottom of the positioning plate 801 is fixedly installed with a feed pipe 804 and a discharge pipe 805, which are respectively connected to two second through slots 8021. The inner cavities of the feed pipe 804 and the discharge pipe 805 are respectively connected to two first through slots 8011. One positioning connecting pipe 705 is connected to the inner cavity of the feed pipe 804 through one of the first through slots 8011 and the second through slot 8021, and the other positioning connecting pipe 705 is connected to the inner cavity of the discharge pipe 805 through the other first through slot 8011 and the second through slot 8021. After the rotating plate 802 rotates half a turn relative to the positioning plate 801, one positioning connecting pipe 705 is connected to the discharge pipe 805, and the other positioning connecting pipe 705 is connected to the feed pipe 804.

[0022] A sealing ring 803 is provided in the second through groove 8021. The bottom of the sealing ring 803 is movably fitted with the top of the positioning plate 801, thereby sealing the connection between the first through groove 8011 and the second through groove 8021 to ensure that there is no leakage problem when the positioning plate 801 rotates relative to the rotating plate 802.

[0023] One end of the feed pipe 804 away from the positioning plate 801 is fixedly connected to one inner wall of the box 2, and a feed trough 8041 is provided at the end of the feed pipe 804 away from the positioning plate 801. The bottom of the inner cavity of the box 2 is designed with a slope, and the feed trough 8041 is close to the lowest point of the inner cavity of the box 2, so as to ensure that the concrete slurry in the box 2 can enter the feed pipe 804 through the feed trough 8041. One end of the discharge pipe 805 away from the positioning plate 801 is fixedly connected to the other inner wall of the box 2, and a mud output pipe 10 connected to the discharge pipe 805 is also fixedly connected to the box 2. The concrete slurry is finally discharged through the mud output pipe 10.

[0024] Supporting vertical plates 11 are fixedly installed on both sides of the top of the housing 2. A carrier plate 12 located above the rotating tube assembly 7 is fixedly installed on the top of the supporting vertical plates 11. A servo motor 13 is fixedly installed on the carrier plate 12. Two symmetrical limiting rods 14 are fixedly installed on the outer edge of the top of the rotating plate 802. A limiting plate 15 is fixedly installed on the top of the two limiting rods 14. The top of the limiting plate 15 is movably connected to the bottom of the carrier plate 12 through a plane bearing to improve the stability of the positioning plate 801 relative to the rotating plate 802. A linkage shaft 16 is fixedly connected to the middle of the top of the rotating plate 802. The top of the linkage shaft 16 is fixedly connected to the output shaft of the servo motor 13. The servo motor 13 drives the output shaft to drive the linkage shaft 16 to rotate, thereby causing the rotating plate 802 to rotate relative to the positioning plate 801. In use, the mixed concrete slurry is first quantitatively and continuously added into the box 2, with the concrete level inside the box 2 lower than the positioning plate 801. The servo motor 13 drives the output shaft, which in turn drives the linkage shaft 16 and the rotating plate 802 to rotate relative to the positioning plate 801. This connects the first L-shaped pipe 5, one of the rotating pipe assemblies 7, and the feed pipe 804, as well as the second L-shaped pipe 6, the other rotating pipe assembly 7, the discharge pipe 805, and the slurry output pipe 10. Then, the piston rods of the two hydraulic cylinders 4 are controlled to... Do not push the pistons in the two suction cylinders 3 to move back and forth. At this time, the piston in the inner cavity of the suction cylinder 3 connected to the first L-shaped pipe 5 moves away from the box body 2. The concrete slurry in the box body 2 enters the interior of one of the suction cylinders 3 through the feed trough 8041, feed pipe 804, one of the rotating pipe assemblies 7 and the first L-shaped pipe 5. Meanwhile, the piston in the inner cavity of the other suction cylinder 3 connected to the second L-shaped pipe 6 moves toward the suction cylinder 3, so that the mud in the suction cylinder 3 is discharged through the second L-shaped pipe 6, the other rotating pipe assembly 7, the discharge pipe 805 and the mud output pipe 10. When the pistons in the inner cavities of the two suction cylinders 3 stop reversing, the servo motor 13 drives the positioning plate 801 to rotate half a turn relative to the rotating plate 802, connecting the first L-shaped pipe 5, one of the rotating pipe assemblies 7, the discharge pipe 805, and the mud output pipe 10, and connecting the second L-shaped pipe 6, the other rotating pipe assembly 7, and the feed pipe 804. At this time, when the second channel 8021 rotates with the positioning plate 801 to coincide with the first channel 8011, the concrete slurry in the positioning connecting pipe 705 and the second channel 8021, under the action of gravity, and in conjunction with the positioning plate 801 and the rotating plate 802, is positioned above the surface of the concrete slurry in the box 2, effectively reducing the risk of concrete obstructing the complete overlap of the second channel 8021 and the first channel 8011. After the pistons in the inner cavities of the two suction cylinders 3 reverse direction, the piston in the inner cavity of the suction cylinder 3 connected to the first L-shaped pipe 5 moves toward the box body 2. The concrete slurry in the inner cavity of the suction cylinder 3 is discharged through the first L-shaped pipe 5, one of the rotating pipe assemblies 7, the discharge pipe 805, and the mud output pipe 10. The piston in the inner cavity of the suction cylinder 3 connected to the second L-shaped pipe 6 moves away from the box body 2. The concrete slurry in the box body 2 enters the inner cavity of the suction cylinder 3 through the feed trough 8041, the other rotating pipe assembly 7, and the second L-shaped pipe 6. This process is repeated to achieve grouting. The grouting flow rate is controlled by controlling the reciprocating movement frequency of the piston in the inner cavity of the suction cylinder 3. At the same time, the flow rate of concrete slurry continuously added to the box body 2 is adapted to achieve quantitative grouting.

[0025] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A concrete quantitative grouting machine, comprising a housing, a sludge suction cylinder disposed on one side of the housing, and a hydraulic cylinder disposed on one side of the sludge suction cylinder for driving a piston inside the sludge suction cylinder to reciprocate, characterized in that, A first L-shaped tube and a second L-shaped tube are fixedly installed on one side of the inner cavity of the box. The inner cavities of the first L-shaped tube and the second L-shaped tube are respectively connected to the inner cavities of two slurry suction cylinders. Rotary tube assemblies are fixedly connected to the top ends of the first L-shaped tube and the second L-shaped tube. A pipeline exchange device is provided at the top of the inner cavity of the box, which is located above the concrete slurry surface. The pipeline exchange device includes a fixedly installed positioning plate. A rotating plate is rotatably connected to the top of the positioning plate, and the rotating plate is driven to rotate by a servo motor installed on the box. The top two sides of the positioning plate are fixedly connected to one end of the two rotating tube assemblies. An inlet pipe and an outlet pipe are fixedly connected to the bottom of the positioning plate. An inlet groove is opened at the bottom end of the inlet pipe near the bottom of the inner cavity of the box. A mud output pipe connected to the outlet pipe is fixedly connected to the other side of the box. The servo motor drives the rotating plate to rotate half a circle relative to the positioning plate, and repeatedly changes the connection state between the inlet pipe, the outlet pipe and the first L-shaped tube and the second L-shaped tube, so that the mud output pipe continuously delivers concrete slurry for grouting.

2. The concrete quantitative grouting machine according to claim 1, characterized in that, The bottom of the inner cavity of the box is designed with a slope, and the feed chute is located near the lowest point of the inner cavity of the box.

3. The concrete quantitative grouting machine according to claim 1, characterized in that, A rotating tube assembly includes two rotating joints. One rotating joint is fixedly connected to the top end of a first L-shaped tube, and the other rotating joint is fixedly connected to the top end of a second L-shaped tube. The rotating ends of the two rotating joints are respectively fixedly connected to arc-shaped tubes. One arc-shaped tube is fixedly connected to an outer conduit at the end away from the rotating joint, and the other arc-shaped tube is fixedly connected to an inner conduit at the end away from the rotating joint. The movable connection between the inner and outer conduits is provided with a sealing ring for sealing. The bottom end of the other rotating joint is fixedly connected to a positioning connecting tube, and the bottom end of the positioning connecting tube is fixedly connected to the top of the rotating plate.

4. The concrete quantitative grouting machine according to claim 3, characterized in that, The positioning plate has two first through slots, and the rotating plate has two second through slots that are respectively connected to the positioning connecting pipe. The two first through slots are respectively connected to the two second through slots.

5. The concrete quantitative grouting machine according to claim 4, characterized in that, The second through groove is provided with a sealing ring, and the bottom of the sealing ring is movably fitted with the top of the positioning plate.

6. The concrete quantitative grouting machine according to claim 1, characterized in that, The pipeline exchange device includes a positioning plate with a circular groove on the top, and the rotating plate is movably fitted inside the circular groove.

7. The concrete quantitative grouting machine according to claim 1, characterized in that, Supporting vertical plates are fixedly installed on both sides of the top of the housing, and a carrier plate located above the rotating tube assembly is fixedly installed on the top of the supporting vertical plates. The servo motor is fixedly installed on the carrier plate.

8. The concrete quantitative grouting machine according to claim 7, characterized in that, Two symmetrical limiting rods are fixedly installed on the outer edge of the top of the rotating plate. Limiting plates are fixedly installed on the top of the two limiting rods. The top of the limiting plates is movably connected to the bottom of the carrier plate through a plane bearing. A linkage shaft is fixedly connected to the middle of the top of the rotating plate. The top of the linkage shaft is fixedly connected to the output shaft of the servo motor.

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