Active pressurized perfusion device for concrete layer of ballastless track

Abstract

The utility model discloses a kind of active pressurization perfusion devices of concrete layer of ballastless track, belong to perfusion device technical field.A kind of active pressurization perfusion device of concrete layer of ballastless track, including hopper frame, fixedly connected with material hopper in hopper frame, the lower end of material hopper is fixedly connected with grouting pump, the side surface position of material hopper is movably connected with grouting hose, grouting pump is movably installed with grouting hose by exhaust component, exhaust component includes exhaust box, spiral blade, cover plate, air suction pump, mounting bracket, protective grating and breathable waterproof membrane.The perfusion device is conveyed into exhaust box by grouting pump with concrete slurry, slurry is continuously pushed and turned over by spiral blade, so that air bubble in it in the negative pressure environment in exhaust box, it is convenient to rise, to separate from concrete, so that the quality of the concrete of perfusion is more good, cover plate, breathable waterproof membrane are convenient to disassemble and install, so that the maintenance, replacement of breathable waterproof membrane is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of grouting device technology, and more specifically, to an active pressure grouting device for ballastless track concrete layers. Background Technology

[0002] Active pressurized concrete injection devices, which inject concrete or grouting materials into concrete structures and specific spaces through pressure, play a key role in ballastless track construction. They can precisely inject concrete into areas such as the gap between the track slab and the base plate, and the structural joints of the track bed slab.

[0003] The active pressurized grouting device for ballastless track concrete layer disclosed in Chinese Patent Application No. CN120083097A adopts a gantry frame structure with traveling wheels. The top is connected to a hopper via a hopper support. The hopper outlet is connected to the inlet of a concrete pressurized pump through a first material pipe. The outlet of the pressurized pump is connected to an outlet with a snap-fit ​​mechanism through a second material pipe, achieving a stable connection with the grouting port of the ballastless track slab. Although this device uses a pressurized pump to increase the grouting pressure to reduce air bubbles, in actual use, some air bubbles easily mix into the concrete and are difficult to eliminate during the transportation of the corrugated hose. Moreover, the concrete pressurized pump is not very effective in treating air bubbles that have entered the hose from the mixed concrete slurry. Therefore, this application proposes an active pressurized grouting device for ballastless track concrete layer to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide an active pressure grouting device for ballastless track concrete layers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An active pressurized grouting device for ballastless track concrete layer includes a hopper frame, a conveying hopper fixedly connected inside the hopper frame, a grouting pump fixedly connected to the lower end of the conveying hopper, and a grouting hose movably connected to the side of the conveying hopper. The grouting pump is movably installed with the grouting hose through an exhaust assembly.

[0007] The exhaust assembly includes an exhaust box, a spiral blade, a cover plate, an air pump, a mounting bracket, a protective grille, and a breathable and waterproof membrane. The exhaust box is located between the grouting pump and the grouting hose. The spiral blade is rotatably connected to the lower part of the exhaust box. The cover plate is fixedly connected to the upper part of the exhaust box. The air pump is fixedly connected to the cover plate. The mounting bracket is fixedly connected inside the exhaust box. The breathable and waterproof membrane is fixedly connected inside the mounting bracket. The protective grille is fixedly connected to the lower part of the breathable and waterproof membrane.

[0008] By adopting the above technical solution, a negative pressure environment is created in the exhaust box, which makes it easier for air bubbles in the concrete slurry to rise and separate from the concrete, thereby removing air bubbles mixed in the concrete, making the concrete in the grouting hose contain fewer air bubbles, and improving the quality of the grouted concrete.

[0009] The structure of the cover plate and positioning plate makes the breathable and waterproof membrane easy to disassemble and install, improving the convenience of replacement and maintenance.

[0010] Preferably, the hopper frame is fixedly connected to the platform, the grouting pump and the exhaust box are fixedly connected to the platform, a support frame is fixedly connected to the lower part of the platform, and casters are movably installed on the bottom surface of the support frame.

[0011] Preferably, the venting assembly includes a guide pipe, an outlet pipe, a conveying rod, a bearing, and a stepper motor. The venting box is fixedly connected to the grouting pump through the guide pipe. The venting box is fixedly connected to one end of the grouting hose through the outlet pipe. The conveying rod is rotatably connected to the venting box through the bearing. The stepper motor is fixedly connected to the platform, and the output shaft of the stepper motor is fixedly connected to one end of the conveying rod.

[0012] By adopting the above technical solution, the conveying rod drives the spiral blade to transport the slurry to the outlet pipe, and finally discharge it through the grouting hose.

[0013] Preferably, the exhaust assembly further includes a first sealing gasket, a second sealing gasket, a protective cover, and a pressure sensor. The first sealing gasket and the pressure sensor are fixedly connected to the cover plate. The pressure sensor is located on the side of the air pump. The first sealing gasket is located on the bottom surface of the cover plate and between the cover plate and the exhaust box. The second sealing gasket is fixedly connected to the side of the mounting bracket. The protective cover is fixedly connected to the mounting bracket, and the protective grille is fixedly connected inside the protective cover.

[0014] By adopting the above technical solution, the No. 1 sealing gasket and the No. 2 sealing gasket are used to improve air tightness, making it easier for the exhaust box to maintain a seal, and making it easier for the mounting bracket to maintain a seal with the inner wall of the exhaust box.

[0015] Preferably, the exhaust assembly further includes a first fixing bolt and a first nut, the cover plate is fixedly connected to the exhaust box by the first fixing bolt and the first nut, and the first fixing bolt passes through the first sealing gasket.

[0016] By adopting the above technical solution, the cover plate can be easily disassembled and installed.

[0017] Preferably, the exhaust assembly further includes a connecting rod, a mounting groove, a positioning frame, and a second fixing bolt. The cover plate is fixedly connected to the mounting frame via the connecting rod. The mounting groove is formed on the mounting frame, and the breathable and waterproof membrane is located inside the mounting groove. A screw hole is provided on the mounting groove corresponding to the position of the second fixing bolt. The positioning frame is located inside the mounting groove and above the breathable and waterproof membrane. One end of the second fixing bolt passes through the positioning frame and the breathable and waterproof membrane in sequence and is fixedly connected to the corresponding screw hole on the mounting groove.

[0018] By adopting the above technical solution, the breathable and waterproof membrane is easy to disassemble and install.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1) When this grouting device is in use, the concrete slurry is delivered into the exhaust box by the grouting pump. The spiral blades continue to push and agitate the slurry, so that the air bubbles in the exhaust box can rise in the negative pressure environment and separate from the concrete, resulting in better quality grouting concrete.

[0021] 2) When using this injection device, the cover plate and the breathable waterproof membrane are easy to disassemble and install, making the maintenance and replacement of the breathable waterproof membrane more convenient. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a cross-sectional schematic diagram of the exhaust box of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the cover plate and protective cover of this utility model after they are inverted;

[0025] Figure 4 This is a schematic diagram showing the breakdown of the breathable and waterproof membrane of this utility model;

[0026] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0027] The following are the labeling instructions in the diagram: 1. Hopper frame; 2. Conveying hopper; 3. Platform; 4. Support frame; 5. Casters; 6. Grouting pump; 7. Exhaust assembly; 701. Exhaust box; 702. Guide pipe; 703. Outlet pipe; 704. Conveying rod; 705. Spiral blade; 706. Bearing; 707. Stepper motor; 708. Cover plate; 709. Air pump; 710. Pressure sensor; 711. No. 1 sealing gasket; 712. No. 1 fixing bolt; 713. No. 1 nut; 714. Connecting rod; 715. Mounting bracket; 716. Protective cover; 717. Protective grille; 718. No. 2 sealing gasket; 719. Mounting groove; 720. Breathable and waterproof membrane; 721. Positioning bracket; 722. No. 2 fixing bolt; 8. Grouting hose. Detailed Implementation

[0028] Example 1, please refer to Figures 1 to 4 An active pressurized grouting device for ballastless track concrete layer includes a hopper frame 1, a conveying hopper 2 fixedly connected inside the hopper frame 1, the hopper frame 1 supporting the conveying hopper 2, a grouting pump 6 fixedly connected to the lower end of the conveying hopper 2, the grouting pump 6 extracting concrete slurry from the conveying hopper 2, a grouting hose 8 movably connected to the side of the conveying hopper 2, the grouting hose 8 being a corrugated pipe or other flexible hose, for discharging and pouring slurry at the pouring location, and the grouting pump 6 being movably installed with the grouting hose 8 via an exhaust assembly 7.

[0029] The exhaust assembly 7 includes an exhaust box 701, a spiral blade 705, a cover plate 708, an air pump 709, a mounting bracket 715, a protective grille 717, and a breathable and waterproof membrane 720. The exhaust box 701 is located between the grouting pump 6 and the grouting hose 8, and is connected to both. The spiral blade 705 is rotatably connected to the lower part of the exhaust box 701 to push the concrete. The cover plate 708 is fixedly connected to the upper part of the exhaust box 701, and the air pump 709 is fixedly connected to... The gas is drawn from the exhaust box 701 by the cover plate 708. The mounting bracket 715 is fixedly connected to the exhaust box 701. The breathable and waterproof membrane 720 is fixedly connected to the mounting bracket 715. The mounting bracket 715 provides a position for the installation of the breathable and waterproof membrane 720. The breathable and waterproof membrane 720 is made of breathable membrane materials such as polytetrafluoroethylene (PTFE) and polyvinylidene fluoride (PVDF), which allows gas to pass through easily, while liquids cannot pass through. The protective grille 717 is fixedly connected to the lower position of the breathable and waterproof membrane 720.

[0030] The hopper frame 1 is fixedly connected to the platform 3. The grouting pump 6 and the exhaust box 701 are fixedly connected to the platform 3. A support frame 4 is fixedly connected to the lower part of the platform 3. The structure of the platform 3 makes the connection between the hopper frame 1 and the support frame 4 more secure. The bottom surface of the support frame 4 is movably equipped with casters 5, which makes the grouting device easy to move.

[0031] The exhaust assembly 7 includes a guide pipe 702, an outlet pipe 703, a conveying rod 704, a bearing 706, and a stepper motor 707. The exhaust box 701 is fixedly connected to the grouting pump 6 through the guide pipe 702. The exhaust box 701 is fixedly connected to one end of the grouting hose 8 through the outlet pipe 703, which facilitates the introduction of concrete slurry from the grouting pump 6 into the grouting hose 8. The conveying rod 704 is rotatably connected to the exhaust box 701 through the bearing 706. The stepper motor 707 is fixedly connected to the platform 3, and the output shaft of the stepper motor 707 is fixedly connected to one end of the conveying rod 704, so that the rotation of the spiral blade 705 is driven by the stepper motor 707.

[0032] The exhaust assembly 7 also includes a first sealing gasket 711, a second sealing gasket 718, a protective cover 716, and a pressure sensor 710. The first sealing gasket 711 and the pressure sensor 710 are fixedly connected to the cover plate 708. The pressure sensor 710 is located on the side of the air pump 709. The first sealing gasket 711 is located on the bottom surface of the cover plate 708 and is located between the cover plate 708 and the exhaust box 701, sealing the position between the cover plate 708 and the exhaust box 701 to prevent external gas from entering the exhaust box 701 from this position. The second sealing gasket 718 is fixedly connected to the side of the mounting bracket 715. The protective cover 716 is fixedly connected to the mounting bracket 715. The second sealing gasket 718 seals the position between the mounting bracket 715 and the inner wall of the exhaust box 701. The protective grille 717 is fixedly connected inside the protective cover 716.

[0033] The steps of using this utility model are as follows: Grouting pump 6 extracts concrete grout from conveying hopper 2 and delivers it to exhaust box 701. After the grout enters exhaust box 701, vacuum pump 709 draws in gas from exhaust box 701. Pressure sensor 710 detects the gas in exhaust box 701, ensuring the gas in exhaust box 701 is within a suitable negative pressure range. Stepper motor 707 drives conveying rod 704 to rotate, causing conveying rod 704 to drive spiral blade 705 to rotate. Spiral blade 705 drives grout into outlet pipe 703, and finally discharges it through grouting hose 8. When spiral blade 705 rotates... The grout will also be turned over, making it easier for the air bubbles contained within it to rise in the exhaust box 701. After passing through the protective grid 717, the gas continues to rise and enters the upper part of the exhaust box 701 through the breathable waterproof membrane 720. This causes the air pressure inside the exhaust box 701 to gradually increase as it is located above the breathable waterproof membrane 720. The air pressure sensor 710 observes and records this in real time. When the air pressure increases to a certain range, the vacuum pump 709 is restarted to discharge the excess gas, thereby maintaining a negative pressure environment inside the exhaust box 701. This makes the air bubbles in the concrete grout delivered in the grouting hose 8 fewer, improving the quality of the concrete pouring.

[0034] Example 2, please refer to Figures 1 to 5 The difference from the basic embodiment 1 is that the exhaust assembly 7 also includes a first fixing bolt 712 and a first nut 713. The cover plate 708 is fixedly connected to the exhaust box 701 by the first fixing bolt 712 and the first nut 713. The first fixing bolt 712 passes through the first sealing gasket 711, and one end of the first fixing bolt 712 also passes through the upper part of the cover plate 708 and the exhaust box 701 and is threadedly connected to the first nut 713.

[0035] The exhaust assembly 7 also includes a connecting rod 714, a mounting groove 719, a positioning frame 721, and a second fixing bolt 722. The cover plate 708 is fixedly connected to the mounting frame 715 via the connecting rod 714. The mounting groove 719 is formed on the mounting frame 715. The breathable and waterproof membrane 720 is located inside the mounting groove 719. The mounting groove 719 has a screw hole corresponding to the position of the second fixing bolt 722. The positioning frame 721 is located inside the mounting groove 719 and is positioned above the breathable and waterproof membrane 720. The positioning frame 721 presses the breathable and waterproof membrane 720 downward to fix the breathable and waterproof membrane 720. One end of the second fixing bolt 722 passes through the positioning frame 721 and the breathable and waterproof membrane 720 in sequence and is fixedly connected to the corresponding screw hole on the mounting groove 719.

[0036] The steps for using this utility model are as follows: Both the first fixing bolt 712 and the second fixing bolt 722 are bolt structures. After removing the first fixing bolt 712 and the first nut 713 on the cover plate 708, pull the cover plate 708 upwards so that the cover plate 708 pulls the mounting bracket 715 out of the exhaust box 701 through the connecting rod 714. Then, twist the second fixing bolt 722 in the opposite direction to remove it, so that the positioning bracket 721 is no longer fixed in the mounting groove 719. After removing the positioning bracket 721, the breathable and waterproof membrane 720 can be easily removed, making it easy to replace and maintain.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An active pressurized grouting device for ballastless track concrete layer, comprising a hopper frame (1), a conveying hopper (2) fixedly connected inside the hopper frame (1), a grouting pump (6) fixedly connected to the lower end of the conveying hopper (2), and a grouting hose (8) movably connected to the side of the conveying hopper (2), characterized in that: The grouting pump (6) is movably installed with the grouting hose (8) via the venting assembly (7); The exhaust assembly (7) includes an exhaust box (701), a spiral blade (705), a cover plate (708), an air pump (709), a mounting bracket (715), a protective grille (717), and a breathable and waterproof membrane (720). The exhaust box (701) is located between the grouting pump (6) and the grouting hose (8). The spiral blade (705) is rotatably connected to the lower part of the exhaust box (701). The cover plate (708) is fixedly connected to the upper part of the exhaust box (701). The air pump (709) is fixedly connected to the cover plate (708). The mounting bracket (715) is fixedly connected inside the exhaust box (701). The breathable and waterproof membrane (720) is fixedly connected inside the mounting bracket (715). The protective grille (717) is fixedly connected to the lower part of the breathable and waterproof membrane (720).

2. The active pressure grouting device for ballastless track concrete layer according to claim 1, characterized in that: The hopper frame (1) is fixedly connected to the platform (3), the grouting pump (6) and the exhaust box (701) are fixedly connected to the platform (3), and a support frame (4) is fixedly connected to the lower part of the platform (3). A caster wheel (5) is movably installed on the bottom surface of the support frame (4).

3. The active pressure grouting device for ballastless track concrete layer according to claim 2, characterized in that: The exhaust assembly (7) includes a guide pipe (702), an outlet pipe (703), a conveying rod (704), a bearing (706), and a stepper motor (707). The exhaust box (701) is fixedly connected to the grouting pump (6) through the guide pipe (702). The exhaust box (701) is fixedly connected to one end of the grouting hose (8) through the outlet pipe (703). The conveying rod (704) is rotatably connected to the exhaust box (701) through the bearing (706). The stepper motor (707) is fixedly connected to the platform (3), and the output shaft of the stepper motor (707) is fixedly connected to one end of the conveying rod (704).

4. The active pressure grouting device for ballastless track concrete layer according to claim 1, characterized in that: The exhaust assembly (7) also includes a first sealing gasket (711), a second sealing gasket (718), a protective cover (716), and a pressure sensor (710). The first sealing gasket (711) and the pressure sensor (710) are fixedly connected to the cover plate (708). The pressure sensor (710) is located on the side of the air pump (709). The first sealing gasket (711) is located on the bottom surface of the cover plate (708) and is located between the cover plate (708) and the exhaust box (701). The second sealing gasket (718) is fixedly connected to the side of the mounting bracket (715). The protective cover (716) is fixedly connected to the mounting bracket (715). The protective grille (717) is fixedly connected inside the protective cover (716).

5. The active pressure grouting device for ballastless track concrete layer according to claim 1, characterized in that: The exhaust assembly (7) also includes a first fixing bolt (712) and a first nut (713). The cover plate (708) is fixedly connected to the exhaust box (701) by the first fixing bolt (712) and the first nut (713), and the first fixing bolt (712) passes through the first sealing gasket (711).

6. The active pressure grouting device for ballastless track concrete layer according to claim 1, characterized in that: The exhaust assembly (7) also includes a connecting rod (714), a mounting groove (719), a positioning frame (721), and a second fixing bolt (722). The cover plate (708) is fixedly connected to the mounting frame (715) via the connecting rod (714). The mounting groove (719) is opened on the mounting frame (715). The breathable and waterproof membrane (720) is located in the mounting groove (719). The mounting groove (719) has a screw hole corresponding to the position of the second fixing bolt (722). The positioning frame (721) is located in the mounting groove (719) and above the breathable and waterproof membrane (720). One end of the second fixing bolt (722) passes through the positioning frame (721), the breathable and waterproof membrane (720), and is fixedly connected to the corresponding screw hole on the mounting groove (719).

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