A concrete feeding system for tunnel construction

Abstract

The present application relates to the technical fields of concrete conveying device in tunnel, especially to a concrete feeding system for tunnel construction, which comprises a box, the box is provided with a stirring cavity, the stirring cavity is provided with a discharge port; a moving assembly is used to move the box; a stirring assembly is used to stir the concrete in the stirring cavity; a conveying assembly comprises a docking mechanism, a scraping mechanism and a discharge mechanism; when in use, the box is moved along the tunnel by the moving assembly, the stirring assembly continuously stirs the concrete while moving, the docking mechanism docks the discharge valve with the conveying pump of the tunnel trolley, then the concrete in the stirring cavity is continuously conveyed into the conveying pump by the discharge mechanism, and the scraping mechanism continuously scrapes and cleans the discharge valve to ensure the smooth conveying of the concrete.

Description

Technical Field

[0001] This invention relates to the technical field of concrete conveying devices in tunnels, specifically a concrete feeding system for tunnel construction. Background Technology

[0002] In recent years, with social development, the number of vehicles has been increasing. To alleviate traffic congestion, large overpasses or underground tunnels are often built during urban transportation construction. When using the underground mining method for tunnel construction, all materials and personnel enter the tunnel through shafts (including the tunnel lining trolley, which transports parts through shafts before assembly). Concrete pump trucks cannot enter the tunnel and can only transport concrete to the bottom of the shaft through concrete pipes. Then, the concrete is pushed into the hopper of the lining trolley by handcarts. The entire tunnel transportation process is done manually, which is very troublesome. As the tunnel is excavated, the distance that workers need to transport becomes longer and longer, requiring a lot of time and energy for transportation, which is not conducive to completing the project on time. Summary of the Invention

[0003] The purpose of this invention is to provide a concrete feeding system for tunnel construction to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A concrete feeding system for tunnel construction includes:

[0006] The box body is provided with a stirring chamber, and the stirring chamber is provided with a discharge port;

[0007] A movable component, the movable component being used to move the housing;

[0008] A mixing assembly for mixing concrete in the mixing chamber; and

[0009] The conveying assembly includes a docking mechanism, a scraping mechanism, and a discharge mechanism. The docking mechanism is used to dock the discharge port and the conveying pump of the tunnel trolley. The scraping mechanism is used to start and clean the discharge port during docking. The discharge mechanism is used to convey the concrete in the mixing chamber to the conveying pump through the discharge port after docking.

[0010] Preferably, the top of the box is also provided with a feeding assembly, which is used to transport concrete into the mixing chamber.

[0011] Preferably, the feeding assembly includes a feeding hopper, which is disposed at the top of the housing and communicates with the mixing chamber.

[0012] Preferably, the moving component includes a moving track, moving wheels, and a moving motor, wherein the moving wheels are engaged with the moving track, and the moving motor is used to drive the moving wheels to rotate.

[0013] Preferably, four sets of the moving wheels and the moving motor are provided, and the four sets of the moving wheels and the moving motor are symmetrically arranged on both sides of the box.

[0014] Preferably, the housing is provided with an equipment cavity, and the mixing assembly includes a mixing motor, a mixing rod, and a temperature control block. The mixing motor is disposed in the equipment cavity and is used to drive the mixing rod to rotate. The temperature control block is disposed on the mixing rod and is used to adjust the temperature of the concrete when it is moved.

[0015] Preferably, the discharge port is provided with a discharge valve, and the discharge end of the discharge valve is provided with a thread. The docking mechanism includes a docking block one, a docking motor, a transmission block, a return spring, a snap-fit ​​block, and a docking block two. The docking block one is provided with a docking groove and a transmission groove. The discharge valve is movably inserted into the docking groove. The docking groove is provided with an internal thread corresponding to the discharge valve. When the discharge end of the discharge valve is fully inserted into the docking groove, the discharge valve will open. The docking block one is provided with an external gear. The output gear of the docking motor is connected to the external gear of the docking block one and meshes with it. The transmission block is provided in the docking groove. The transmission block is used to trigger the snap-fit ​​block to snap-fit ​​the docking block two. The two ends of the return spring are respectively connected to the transmission groove and the snap-fit ​​block. The docking block two is connected to the feed pipe of the tunnel trolley conveying pump.

[0016] Preferably, the scraping mechanism includes a triggering device, a scraper, a rotating block, and a rotating motor. The triggering device is disposed in the docking groove. When the discharge valve is inserted into the docking groove, the triggering device is triggered to open. When the triggering device is opened, the scraper is ejected and the rotating motor is started. The scraper is disposed in the rotating block, and the rotating motor is used to drive the rotating block to rotate.

[0017] Preferably, the rotating block is provided with a mounting groove, the scraper is movably inserted into the mounting groove, the triggering device includes a trigger switch, an electromagnet and a pop-out spring, the trigger switch is provided in the docking groove, and the side wall of the discharge valve abuts against the trigger switch to close the electromagnet, the electromagnet is provided in the mounting groove and is used to attract the scraper, and the two ends of the pop-out spring are respectively connected to the scraper and the mounting groove.

[0018] Preferably, the discharge mechanism includes a hydraulic push rod and a discharge trough, the discharge trough being connected to the discharge port, the hydraulic push rod being disposed in the discharge trough, and the hydraulic push rod being used to transport the concrete in the mixing chamber to the delivery pump through the discharge port after connection.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: During use, the moving component drives the housing to move along the tunnel. Simultaneously, the mixing component continuously mixes the concrete. The docking mechanism quickly and easily connects the discharge valve to the tunnel trolley's delivery pump. The discharge mechanism then continuously delivers the concrete from the mixing chamber to the delivery pump. The scraping mechanism continuously cleans the discharge valve to prevent blockage and ensure smooth concrete delivery. The present invention has a simple structure, high degree of automation, and can significantly save manpower. Furthermore, the scraping mechanism prevents the discharge valve from becoming clogged after use, saving cleaning time. When used in conjunction with a tunnel trolley, it can significantly reduce underground tunnel construction time, making it worthy of widespread application in long-distance underground tunnel construction where concrete pump trucks cannot access. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the isometric structure of the present invention;

[0021] Figure 2 This is a side view of the structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the connection structure between the discharge valve and the docking block of the present invention;

[0023] Figure 4 for Figure 3 A magnified schematic diagram of a portion of area A in the middle;

[0024] Figure 5 for Figure 3 A magnified schematic diagram of a portion of region B in the middle section.

[0025] In the diagram: 1. Box body, 2. Mixing chamber, 3. Feed hopper, 4. Moving track, 5. Moving wheel, 6. Moving motor, 7. Equipment cavity, 8. Mixing motor, 9. Mixing rod, 10. Temperature control block, 11. Discharge valve, 12. Connecting block one, 13. Connecting motor, 14. Transmission block, 15. Reset spring, 16. Snap-fit ​​block, 17. Connecting block two, 18. Scraper, 19. Rotating block, 20. Rotating motor, 21. Trigger switch, 22. Electromagnet, 23. Pop-up spring, 24. Hydraulic push rod, 25. Discharge chute. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-5 The present invention provides a technical solution:

[0028] A concrete feeding system for tunnel construction, as shown in the instruction manual. Figure 1 As shown, it includes:

[0029] Box 1, box 1 is used to install and set other mechanisms of the present invention, box 1 is provided with a mixing chamber 2, mixing chamber 2 is used to store concrete, mixing chamber 2 is provided with a discharge port, and the discharge port is used to install a discharge valve 11.

[0030] The top of the housing 1 is also equipped with a feeding assembly, which is used to transport concrete into the mixing chamber 2. The feeding assembly includes a feeding hopper 3, which is made of Q235 material. The feeding hopper 3 is fixedly connected to the top of the housing 1 by bolts and is interconnected with the mixing chamber 2. The feeding hopper 3 has a funnel-shaped structure, which is used to facilitate the pouring of concrete into the mixing chamber 2 and to prevent concrete leakage during the feeding process.

[0031] The moving assembly is used to move the drive housing 1. The moving assembly includes a moving track 4, moving wheels 5, and a moving motor 6. The moving track 4 is a modular steel rail; it can be easily and quickly fixed to the tunnel floor with bolts. The moving track 4 is laid according to the tunnel's orientation. The moving wheels 5 have a locking groove in the middle, allowing them to engage with the moving track 4. The moving motor 6 is located at the bottom of the housing 1 and is a servo motor used to drive the moving wheels 5 to rotate. Four sets of moving wheels 5 and moving motors 6 are symmetrically arranged on both sides of the housing 1. Since each moving wheel 5 is controlled by an independent moving motor 6, the speed of each wheel 5 can be adjusted individually. Therefore, even if the moving track 4 is not linear, the moving wheels 5 can be set to drive the housing 1 along the moving track 4 without derailing.

[0032] The mixing assembly is used to mix the concrete in the mixing chamber 2. The housing 1 is provided with an equipment chamber 7, which is used to install the mixing motor 8, the hydraulic push rod 24, and the hydraulic cylinder that drives the hydraulic push rod 24. The mixing assembly includes the mixing motor 8, the mixing rod 9, and the temperature control block 10. The mixing motor 8 is located in the equipment chamber 7 and is used to drive the mixing rod 9 to rotate. The temperature control block 10 is a heating block. The temperature control block 10 is located on the mixing rod 9 and is used to adjust the temperature of the concrete when the temperature is low, so as to ensure the fluidity of the concrete during feeding.

[0033] The conveying assembly includes a docking mechanism, a scraping mechanism, and a discharge mechanism. The docking mechanism is used to dock the discharge port and the conveying pump of the tunnel trolley. The scraping mechanism is used to clean the discharge port during docking. The discharge mechanism is used to convey the concrete in the mixing chamber 2 to the conveying pump through the discharge port after docking.

[0034] The discharge port is equipped with a discharge valve 11, which is an electromagnetic ball valve. The discharge valve 11 is used to discharge concrete after docking with the docking block. The discharge valve 11 has threads on its outer side. The docking mechanism includes docking block one 12, docking motor 13, transmission block 14, return spring 15, snap-fit ​​block 16, and docking block two 17. The docking block one 12 is provided with a docking groove and a transmission groove, as shown in the attached diagram of the instruction manual. The discharge end of the discharge valve 11 is movably inserted into the docking groove. The inner side wall of the docking groove is provided with internal threads corresponding to the discharge valve 11. The contact end of the discharge valve 11 with the docking groove is provided with a self-resetting start switch. Therefore, when the discharge end of the discharge valve 11 is fully inserted into the docking groove, the start switch will be pressed and the discharge valve 11 will open. The docking block one 12 is provided with an external gear. The output gear of the docking motor 13 is connected to the external gear of the docking block one 12 and meshes with it. The docking motor 13 can rotate in both directions. Therefore, when the docking motor 13 starts, it will drive the conveying gear to rotate, thereby driving the docking block to rotate. The transmission block 14 is set at one end of the docking groove. The cross-section of the transmission block 14 is trapezoidal. The transmission block 14 is used to trigger the locking block 16 to lock the docking block 17. The two ends of the return spring 15 are connected to the transmission groove and the locking block 16 respectively. As shown in the attached figure of the instruction manual, the cross-section of the locking block 16 is [not specified]. The return spring 15 is a compression spring. The return spring 15 is used to drive the transmission block 14 and the locking block 16 to reset when the docking motor 13 releases the fixed connection between the docking block 12 and the discharge valve 11. The docking block 17 is connected to the feed pipe of the tunnel trolley conveying pump. The connection end of the docking block 17 and the docking block 1 is provided with a sealing gasket. The conveying pump is used to transport concrete to the grouting port of the lining trolley.

[0035] The scraping mechanism includes a triggering device, a scraper 18, a rotating block 19, and a rotating motor 20. The triggering device is located in the docking groove. When the discharge valve 11 is inserted into the docking groove, the triggering device will be triggered to open. When the triggering device is opened, the scraper 18 will pop out. Multiple scrapers 18 are provided and are arranged around the rotating block 19. The rotating block 19 is rotatably connected to the docking block 12. The rotating motor 20 is located in the docking block 12. The rotating block 19 is provided with an internal gear. The internal gear and the output gear of the rotating motor 20 mesh with each other. Therefore, when the rotating motor rotates, it will drive the rotating block 19 to rotate. The rotating motor 20 is used to drive the rotating block 19 to rotate, thereby driving the scraper 18 to scrape the side wall of the discharge valve 11.

[0036] The rotating block 19 is provided with a mounting slot for mounting the electromagnet 22 and the pop-out spring 23. The scraper 18 is movably inserted into the mounting slot. The triggering device includes a trigger switch 21, an electromagnet 22, and a pop-out spring 23. The trigger switch 21 is an electromagnetically controlled self-resetting switch. The trigger switch 21 is located in the docking slot. When the discharge valve 11 presses against the trigger switch 21, the trigger switch 21 will close the electromagnet 22 through an electromagnetic signal, thereby causing the pop-out spring 23 to drive the scraper 18 to pop out. The discharge valve 11 presses against the trigger switch 21 to close the electromagnet 22. The electromagnet 22 is located in the mounting slot. In this embodiment, the scraper 18 is made of brass. A permanent magnet is provided at the end of the scraper 18 near the electromagnet. The pop-out spring 23 is also made of brass. The two ends of the pop-out spring 23 are respectively connected to the scraper 18 and the mounting slot.

[0037] The discharge mechanism includes a hydraulic push rod 24 and a discharge trough 25. The discharge trough 25 is located at the bottom of the mixing chamber 2 and is connected to the mixing chamber 2. Therefore, after the hydraulic push rod 24 pushes the concrete in the discharge trough 25 away, the concrete in the mixing chamber 2 will fall into the discharge trough 25 due to gravity. The discharge trough 25 is connected to the discharge port. The hydraulic push rod 24 is located in the discharge trough 25. The hydraulic push rod 24 is used to push the concrete in the mixing chamber 2 through the discharge port to the delivery pump after the connection.

[0038] Working principle: During use, the moving track 4 is laid first according to the conveying requirements. Then, the moving wheels 5 are engaged on the moving track. The movement of each moving motor 6 is then set according to the moving track 4 (including rotation time and rotation speed of the moving motor 6 within that time period). The connecting block 17 is fixedly connected to the feed pipe of the tunnel trolley conveying pump. The temperature of the heating block is then set according to the actual situation. After the heating block preheats the mixing rod 9, the mixing motor 8 is started. The top of the mixing head will drive the mixing rod 9 to rotate, conveying the concrete through the feed hopper 3 into the mixing chamber 2. At this time, the mixing rod 9 will continuously heat and mix the concrete to prevent it from solidifying during transportation. When the moving component drives the housing 1 to connect with the connecting block 17 located on the feed pipe of the tunnel trolley conveying pump, the connecting block 17 will... After inserting docking block 12, it drives docking block 12 to insert into discharge valve 11. At this time, docking motor 13 is started, which drives docking block to rotate, so that discharge valve 11 is fully inserted into docking groove. As discharge valve 11 is inserted, the side wall of discharge valve 11 will abut against trigger switch 21, so that electromagnet 22 is closed. At this time, spring 23 will drive scraper 18 to pop out. At the same time, rotating motor 20 will start, driving scraper 18 to clean the discharge end of discharge valve 11. As discharge valve 11 is inserted into the bottom of docking groove, transmission block 14 will be stressed, which will drive snap-fit ​​block 16 to snap docking block 17 (at this time, reset spring 15 is compressed). At the same time, discharge valve 11 will open, and then hydraulic push rod 24 will continuously push concrete in discharge trough 25 through discharge valve 11 into delivery pump.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concrete feeding system for tunnel construction, characterized in that, include: The box body is provided with a stirring chamber, and the stirring chamber is provided with a discharge port; A movable component, the movable component being used to move the housing; A mixing assembly for mixing concrete in the mixing chamber; as well as The conveying assembly includes a docking mechanism, a scraping mechanism, and a discharge mechanism. The docking mechanism is used to dock the discharge port and the conveying pump of the tunnel trolley. The scraping mechanism is used to start and clean the discharge port during docking. The discharge mechanism is used to convey the concrete in the mixing chamber to the conveying pump through the discharge port after docking. The discharge port is equipped with a discharge valve, and the discharge end of the discharge valve is threaded. The docking mechanism includes a docking block one, a docking motor, a transmission block, a return spring, a snap-fit ​​block, and a docking block two. The docking block one is equipped with a docking groove and a transmission groove. The discharge valve is movably inserted into the docking groove. The docking groove is equipped with an internal thread corresponding to the discharge valve. When the discharge end of the discharge valve is fully inserted into the docking groove, the discharge valve will open. The docking block one is equipped with an external gear. The output gear of the docking motor meshes with the external gear of the docking block one. The transmission block is located in the docking groove and is used to trigger the snap-fit ​​block to snap-fit ​​the docking block two. The two ends of the return spring are respectively connected to the transmission groove and the snap-fit ​​block. The docking block two is connected to the feed pipe of the tunnel trolley conveying pump.

2. The concrete feeding system for tunnel construction according to claim 1, characterized in that: The top of the box is also equipped with a feeding assembly, which is used to transport concrete into the mixing chamber.

3. A concrete feeding system for tunnel construction according to claim 2, characterized in that: The feeding assembly includes a feeding hopper, which is located at the top of the housing and communicates with the mixing chamber.

4. The concrete feeding system for tunnel construction according to claim 1, characterized in that: The moving component includes a moving track, moving wheels, and a moving motor. The moving wheels are engaged with the moving track, and the moving motor drives the moving wheels to rotate.

5. A concrete feeding system for tunnel construction according to claim 4, characterized in that: There are four sets of the moving wheels and the moving motor, which are symmetrically arranged on both sides of the box.

6. A concrete feeding system for tunnel construction according to claim 1, characterized in that: The housing is provided with an equipment cavity. The mixing assembly includes a mixing motor, a mixing rod, and a temperature control block. The mixing motor is located in the equipment cavity and is used to drive the mixing rod to rotate. The temperature control block is located on the mixing rod and is used to adjust the temperature of the concrete when it moves.

7. A concrete feeding system for tunnel construction according to claim 1, characterized in that: The scraping mechanism includes a triggering device, a scraper, a rotating block, and a rotating motor. The triggering device is located in the docking groove. When the discharge valve is inserted into the docking groove, the triggering device will be triggered to open. When the triggering device is opened, the scraper will pop out and the rotating motor will be started. The scraper is located in the rotating block, and the rotating motor is used to drive the rotating block to rotate.

8. A concrete feeding system for tunnel construction according to claim 7, characterized in that: The rotating block is provided with a mounting groove, and the scraper is movably inserted into the mounting groove. The triggering device includes a trigger switch, an electromagnet, and a pop-out spring. The trigger switch is located in the docking groove, and the side wall of the discharge valve abuts against the trigger switch to close the electromagnet. The electromagnet is located in the mounting groove and is used to attract the scraper. The two ends of the pop-out spring are respectively connected to the scraper and the mounting groove.

9. A concrete feeding system for tunnel construction according to claim 1, characterized in that: The discharge mechanism includes a hydraulic push rod and a discharge trough. The discharge trough is connected to the discharge port. The hydraulic push rod is disposed in the discharge trough and is used to transport the concrete in the mixing chamber to the delivery pump through the discharge port after connection.

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