A multi-functional material conveying device specifically designed for subway tunnel boring machine construction.

Abstract

The present invention discloses a multifunctional material conveying device specially used for subway shield construction, comprising a conveying pipe, a motor group, a feed bin, an automatic unloading component and a start-stop control component. A rotating shaft is coaxially arranged in the conveying pipe, and the rotating shaft is driven by a motor group fixed to the outside of the conveying pipe. A spiral push plate is arranged on the rotating shaft, and a discharge hole is arranged at a position of the conveying pipe close to the motor group; a feed bin is also fixed at one end of the conveying pipe away from the motor group, and an automatic unloading component is connected to the bottom of the feed bin, and the automatic unloading component can adjust the upper and lower positions of a piston according to the weight of the material in the feed bin, so as to control the feed pipe to unload or stop unloading, so as to achieve the purpose of automatic unloading; the up and down movement of the piston can control the switch of a push switch in the start-stop control component, so as to control the start and stop of the motor group, so as to achieve the effect of automatically driving and conveying the material, and improve the automation level of the overall device.

Description

Technical Field

[0001] The invention specifically relates to the technical field of material conveying devices, in particular to a multifunctional material conveying device dedicated to subway shield construction. Background Art

[0002] Subway shield construction is a construction method in which special machinery for tunneling is used to build tunnels below the ground. It includes shield construction, tunnel waterproofing, slag removal / transportation in the tunnel, construction measurement, inspection and transportation, etc. The slurry injected in subway shield construction is mainly composed of sand, gravel, cement, coal ash and bentonite. These materials need to be mixed and then sent into the shield pipeline, and the transportation is completed by an automatic feeding device.

[0003] The existing feeding device is generally driven by pressing a switch button on the controller. When in use, it is necessary to start the device first and then control the feeding device to stop after the slurry transmission is completed. The operation is cumbersome and the efficiency is low.

[0004] Therefore, those skilled in the art provide a multifunctional material conveying device dedicated to subway shield construction to solve the problems raised in the above background technology. Summary of the invention

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multifunctional feeding device specially used for subway shield construction, comprising a conveying pipe, a motor group, a feed bin, an automatic unloading component and a start-stop control component, wherein a rotating shaft is coaxially arranged in the conveying pipe, and the rotating shaft is driven by a motor group fixed to the outside of the conveying pipe, a spiral push plate is arranged on the rotating shaft, and a discharge hole is arranged at a position of the conveying pipe close to the motor group; a feed bin is also fixed at one end of the conveying pipe away from the motor group, and an automatic unloading component is connected to the bottom of the feed bin, and the automatic unloading component can adjust the upper and lower positions of the piston according to the weight of the material in the feed bin, thereby controlling the feed pipe to unload or stop unloading; the up and down movement of the piston can control the switch of the push switch in the start-stop control component, thereby controlling the start and stop of the motor group.

[0006] Furthermore, preferably, the bottom of the feed bin is composed of a feed inclined plate and a feed bottom plate, so that the material tends to move toward the feed bottom plate through the feed inclined plate.

[0007] Further, as a preference, the automatic unloading assembly comprises a connecting pipe, a push rod, a connecting cross bar and a fixed seat, wherein two connecting pipes are symmetrically fixed and connected below the feed inclined plate, and a piston is slidably connected in each connecting pipe, a push rod and an extension rod are fixed at the bottom of each piston, and the two extension rods are symmetrical and slide into the fixed bin, and a protective seat is also used on the top of the fixed bin to provide support for the connecting pipe;

[0008] A fixing seat is fixedly embedded in the middle of the upper part of the fixing bin, the interior of the fixing seat is a stepped cavity, a sliding plate is slidably arranged in the cavity, a sliding rod is fixed on the lower surface of the sliding plate, the sliding rod slides through the fixing seat and is fixedly connected to the connecting cross bar, and the left and right ends of the connecting cross bar are respectively fixedly connected to two extension rods;

[0009] A compression spring is also arranged inside the fixing seat. The compression spring is sleeved on the outer circumference of the sliding rod. One end of the compression spring abuts against the sliding plate, and the other end abuts against the bottom of the cavity of the fixing seat.

[0010] Furthermore, as a preference, two guide plates are symmetrically fixed inside the fixed bin, and limiting grooves are transversely provided on the guide plates for allowing the connecting cross bar to pass therethrough and for limiting the connecting cross bar.

[0011] Further, as a preference, the outer circumferential fixed sleeve of the push rod is provided with a sliding tube, the sliding tube is fixed on the upper top surface of the fixed bin, and the push rod is slidably connected to the sliding tube.

[0012] Furthermore, as a preference, a feed pipe is embedded in the connecting pipe on the right side, and the other end of the feed pipe is connected to the conveying pipe.

[0013] Further, as a preference, the start-stop control assembly includes an outer warehouse, a hollow rotating shaft and a push switch, the outer warehouse is fixed to the inner bottom of the fixed warehouse, a rack is slidably inserted into the upper end surface of the outer warehouse, the rack is driven by a connecting cross bar to move up and down, the rack is meshed with a gear, the gear is fixed to the outer circumference of the hollow rotating shaft, the left end of the hollow rotating shaft is rotatably set on the left side wall of the outer warehouse, the other end of the hollow rotating shaft is threaded with a screw, a limit rod is fixed below the other end of the screw, the limit rod is slidably set on a guide rod, the guide rod is fixed to the inner bottom of the outer warehouse, and a push switch corresponding to the screw is also provided on the inner right side wall of the outer warehouse.

[0014] Further, as a preference, a support spring is fixed to the bottom of the rack, and the other end of the support spring is fixed to the inner bottom of the outer bin.

[0015] Further, as a preference, the conveying pipe includes an outer tube and an inner tube coaxially embedded in the outer tube, the feed bin is connected to the inner tube by a feed pipe, an installation space is formed between the outer tube and the inner tube, a plurality of stirring motors are arranged in the installation space, the output end of the stirring motor rotates and extends into the inner tube, a stirring blade is also fixed to the output end of the stirring motor, the stirring blade is arranged to avoid the spiral pushing plate, a plurality of water inlet pipes are also fixed in the installation space, one end of the water inlet pipe is connected to an external water source, and the other end thereof extends into the inner tube.

[0016] Furthermore, as a preference, a power-off delay relay is also provided in the fixed compartment, and the power-off delay relay is electrically connected to the push switch and the motor group.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: an automatic unloading component is added to the bottom of the feed bin of the present device, and the automatic unloading component can adjust the upper and lower positions of the piston according to the weight of the material in the feed bin, thereby controlling the feed pipe to unload or stop unloading, thereby achieving the purpose of automatic unloading. When the material is small, no unloading is performed, thereby saving energy and improving overall work efficiency. In addition, a start-stop control component is added to the bottom of the automatic unloading component in the present device, and the up and down movement of the piston can control the switch of the push switch in the start-stop control component, thereby controlling the start and stop of the motor group, achieving the effect of automatically driving and conveying the material, improving the automation level of the overall device, and liberating manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a multifunctional material feeding device specially used in subway shield construction;

[0019] Figure 2 It is a structural schematic diagram of an automatic unloading component and a start-stop control component in a multifunctional feeding device dedicated to subway shield construction;

[0020] Figure 3 for Figure 2 Schematic diagram of the lower part of the structure;

[0021] Figure 4 This is a schematic diagram of the structure of a start-stop control component in a multifunctional material feeding device dedicated to subway shield construction;

[0022] Figure 5 This is a schematic diagram of the structure of a conveying pipe in a multifunctional material conveying device dedicated to subway shield construction;

[0023] In the figure: 1. conveying pipe; 2. rotating shaft; 3. spiral push plate; 4. motor unit; 5. feed bin; 6. feed bottom plate; 7. feed inclined plate; 8. connecting pipe; 9. piston; 10. push rod; 11. sliding pipe; 12. feed pipe; 13. protective seat; 14. extension rod; 15. connecting cross bar; 16. fixed seat; 17. sliding plate; 18. sliding rod; 19. fixed bin; 20. guide plate; 21. start-stop control component; 22. outer bin; 23. hollow rotating shaft; 24. rack; 25. gear; 26. screw; 27. push switch; 28. limit rod; 29. ​​guide rod; 30. support spring; 31. outer tube; 32. inner tube; 33. stirring motor; 34. water inlet pipe. DETAILED DESCRIPTION

[0024] See also Figures 1 to 5 In an embodiment of the present invention, a multifunctional feeding device dedicated to subway shield construction includes a conveying pipe 1, a motor group 4, a feed bin 5, an automatic unloading component and a start-stop control component 21, wherein a rotating shaft 2 is coaxially arranged in the conveying pipe 1, and the rotating shaft 2 is driven by the motor group 4 fixed to the outside of the conveying pipe 1, and a spiral push plate 3 is arranged on the rotating shaft 2. A discharge hole is arranged at a position of the conveying pipe 1 close to the motor group 4, and a feed bin 5 is also fixed at one end of the conveying pipe 1 away from the motor group 4. The bottom of the feed bin 5 is connected and provided with an automatic unloading component, and the automatic unloading component can adjust the upper and lower positions of a piston 9 according to the weight of the material in the feed bin 5, so as to control the feed pipe 12 to unload or stop unloading; the up and down movement of the piston 9 can control the switch of the push switch 27 in the start-stop control component 21, so as to control the start and stop of the motor group 4. The conventional configuration of the motor group 4 is a motor plus a reducer structure, that is, the push switch in this device is electrically connected to the motor.

[0025] As a preferred embodiment, the bottom of the feed bin 5 is composed of a feed inclined plate 7 and a feed bottom plate 6, so that the material tends to move toward the feed bottom plate 6 through the feed inclined plate 7. Therefore, when there is less material in the feed bin 5, the material will accumulate above the feed bottom plate 6, and only a very small part will fall into the connecting pipe 8.

[0026] like Figure 2 The automatic unloading assembly includes a connecting pipe 8, a push rod 10, a connecting cross bar 15 and a fixed seat 16, wherein the two connecting pipes 8 are symmetrically fixed and connected below the feed inclined plate 7, and each connecting pipe 8 is slidably connected with a piston 9, and a push rod 10 and an extension rod 14 are fixed at the bottom of each piston 9, and the two extension rods 14 are symmetrical and slide into the fixed bin 19, and the top of the fixed bin 19 also uses a protective seat 13 to provide support for the connecting pipe 8;

[0027] A fixing seat 16 is fixedly embedded in the middle of the upper part of the fixing bin 19, and the interior of the fixing seat 16 is a stepped cavity, in which a sliding plate 17 is slidably arranged, and a sliding rod 18 is fixed to the lower surface of the sliding plate 17, and the sliding rod 18 slides through the fixing seat 16 and is fixedly connected to the connecting cross bar 15, and the left and right ends of the connecting cross bar 15 are respectively fixedly connected to the two extension rods 14;

[0028] A compression spring is also disposed inside the fixing seat 16 . The compression spring is sleeved on the outer circumference of the sliding rod 18 . One end of the compression spring abuts against the sliding plate 17 , and the other end abuts against the bottom of the cavity of the fixing seat 16 .

[0029] As a preferred embodiment, two guide plates 20 are symmetrically fixed inside the fixed bin 19 , and limiting grooves are transversely provided on the guide plates 20 for allowing the connecting cross bar 15 to pass therethrough and for limiting the connecting cross bar 15 .

[0030] As a preferred embodiment, the outer circumferential fixed sleeve of the push rod 10 is provided with a sliding tube 11, and the sliding tube 11 is fixed to the upper top surface of the fixed bin 19. The push rod 10 is slidably connected to the sliding tube 11, which further improves the stability of the push rod 10 moving up and down.

[0031] In this embodiment, a feed pipe 12 is embedded in the right connecting pipe 8 , and the other end of the feed pipe 12 is connected to the conveying pipe 1 .

[0032] like Figure 4 The start-stop control assembly 21 includes an outer bin 22, a hollow rotating shaft 23 and a push switch 27. The outer bin 22 is fixed to the inner bottom of the fixed bin 19. A rack 24 is slidably inserted into the upper end surface of the outer bin 22. The rack 24 is driven by a connecting cross bar to move up and down. The rack 24 is meshed with a gear 25. The gear 25 is fixed to the outer circumference of the hollow rotating shaft 23. The left end of the hollow rotating shaft 23 is rotatably set on the left side wall of the outer bin 22. The other end of the hollow rotating shaft 23 is threadedly inserted with a screw 26. A limit rod 28 is fixed below the other end of the screw 26, and the limit rod 28 is slidably set on a guide rod 29. The guide rod 29 is fixed to the inner bottom of the outer bin 22. A push switch 27 corresponding to the screw 26 is also provided on the inner right side wall of the outer bin 22. The up and down movement of the rack 24 can drive the gear to rotate, thereby driving the hollow shaft 23 to rotate. The rotation of the hollow shaft 23 will drive the screw 26 to move left and right, thereby realizing the control of the push switch 27 to control the start and stop of the motor.

[0033] In this embodiment, a support spring 30 is fixed to the bottom of the rack 24, and the other end of the support spring 30 is fixed to the inner bottom of the outer bin 22, so the support spring also provides support for the connecting cross bar 15. In addition, the compression spring in the fixed seat also provides support for the connecting cross bar. Then the specifications of the support spring and the compression spring should meet the following conditions: when the material in the feed bin 5 reaches a certain weight and needs to be transported through the conveying pipe 1, the two pistons 9 can overcome the elastic force of the compression spring and the support spring and move downward, and make the piston 9 located below the feed pipe 12; when the material in the feed bin 5 does not reach a certain weight and does not need to be transported through the conveying pipe 1, the two pistons 9 remain stationary or move downward by a distance that makes the piston 9 still located above the feed pipe 12, thereby preventing the material from entering the feed pipe 12.

[0034] In this embodiment, the conveying pipe 1 includes an outer tube 31 and an inner tube 32 coaxially embedded in the outer tube 31. The feed bin 5 is connected to the inner tube 32 by a feed pipe 12. An installation space is formed between the outer tube 31 and the inner tube 32. A plurality of stirring motors 33 are arranged in the installation space. The output end of the stirring motor 33 rotates and extends into the inner tube 32. A stirring blade is also fixed to the output end of the stirring motor. The stirring blade is arranged to avoid the spiral push plate 3. A plurality of water inlet pipes 34 are also fixed in the installation space. One end of the water inlet pipe 34 is connected to an external water source, and the other end thereof extends into the inner tube 32, so that the material can be further mixed during the conveying process. The arranged water inlet pipe can, on the one hand, replenish water to the material according to actual conditions, and on the other hand, facilitate subsequent cleaning.

[0035] In this embodiment, a power-off delay relay is also provided in the fixed bin 19, and the power-off delay relay is electrically connected to the push switch and the motor group 4. That is to say, when the material in the feed bin 5 is basically conveyed, the piston 9 moves upward under the support of the compression spring and the support spring, thereby driving the rack to move upward. The movement of the rack drives the rotation of the gear, thereby causing the hollow shaft 23 to rotate. The rotation of the hollow shaft 23 will drive the screw 26 to move to the left, so that the screw 26 does not contact the push switch 27. At this time, under the control of the power-off delay relay, the motor has not been immediately powered off, and the material in the conveying pipe 1 can continue to be conveyed to the discharge hole, preventing the material from accumulating in the conveying pipe 1 and forming a blockage.

[0036] The device adds an automatic unloading component at the bottom of the feed bin, and the automatic unloading component can adjust the up and down position of the piston according to the weight of the material in the feed bin, so as to control the feed pipe to unload or stop unloading, so as to achieve the purpose of automatic unloading. When the material is small, no unloading is carried out, thereby saving energy and improving the overall work efficiency. In addition, the device also adds a start-stop control component below the automatic unloading component. The up and down movement of the piston can control the switch of the push switch in the start-stop control component, so as to control the start and stop of the motor group, so as to achieve the effect of automatically driving and conveying the material, improve the automation level of the overall device, and liberate manpower.

[0037] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multifunctional material conveying device for subway shield construction, comprising a conveying pipe, a motor group, a feed bin, an automatic unloading component and a start-stop control component, wherein: A rotating shaft is coaxially arranged in the conveying pipe, and the rotating shaft is driven by a motor unit fixed to the outside of the conveying pipe. A spiral push plate is arranged on the rotating shaft, and a discharge hole is arranged at a position of the conveying pipe close to the motor unit; it is characterized in that a feed bin is also fixed to the end of the conveying pipe away from the motor unit, and an automatic unloading assembly is arranged at the bottom of the feed bin, and the automatic unloading assembly can adjust the up and down position of the piston according to the weight of the material in the feed bin, so as to control the feed pipe to unload or stop unloading; the up and down movement of the piston can control the switch of the press switch in the start-stop control assembly, so as to control the start and stop of the motor unit; The automatic unloading assembly includes a connecting pipe, a push rod, a connecting cross bar and a fixed seat, wherein two connecting pipes are symmetrically fixed and connected below the feed inclined plate, and a piston is slidably connected in each connecting pipe, a push rod and an extension rod are fixed at the bottom of each piston, and the two extension rods are symmetrical and slide into the fixed bin, and a protective seat is also used on the top of the fixed bin to provide support for the connecting pipe; A fixing seat is fixedly embedded in the middle of the upper part of the fixing bin, the interior of the fixing seat is a stepped cavity, a sliding plate is slidably arranged in the cavity, a sliding rod is fixed on the lower surface of the sliding plate, the sliding rod slides through the fixing seat and is fixedly connected to the connecting cross bar, and the left and right ends of the connecting cross bar are respectively fixedly connected to two extension rods; A compression spring is also arranged inside the fixing seat, and the compression spring is sleeved on the outer circumference of the sliding rod, one end of the compression spring abuts against the sliding plate, and the other end abuts against the bottom of the cavity of the fixing seat; The start-stop control assembly includes an outer warehouse, a hollow rotating shaft and a push switch. The outer warehouse is fixed to the inner bottom of the fixed warehouse. A rack is slidably inserted into the upper end surface of the outer warehouse. The rack is driven by a connecting cross bar to move up and down. The rack is meshed with a gear. The gear is fixed to the outer circumference of the hollow rotating shaft. The left end of the hollow rotating shaft is rotatably set on the left side wall of the outer warehouse. A screw is threadedly inserted at the other end of the hollow rotating shaft. A limit rod is fixed below the other end of the screw. The limit rod is slidably set on a guide rod. The guide rod is fixed to the inner bottom of the outer warehouse. A push switch corresponding to the screw is also set on the inner right side wall of the outer warehouse.

2. The multifunctional material feeding device for subway shield construction according to claim 1 is characterized in that: The bottom of the feed bin is composed of a feed inclined plate and a feed bottom plate, so that the material has a tendency to move toward the feed bottom plate through the feed inclined plate.

3. The multifunctional material feeding device for subway shield construction according to claim 1 is characterized in that: Two guide plates are symmetrically fixed inside the fixed bin, and limiting grooves are transversely provided on the guide plates to allow the connecting cross bar to pass through and limit the connecting cross bar.

4. The multifunctional material feeding device for subway shield construction according to claim 1 is characterized in that: The outer circumference fixed sleeve of the push rod is provided with a sliding tube, the sliding tube is fixed on the upper top surface of the fixed bin, and the push rod is slidably connected with the sliding tube.

5. The multifunctional material feeding device for subway shield construction according to claim 1 is characterized in that: A feed pipe is also embedded in the connecting pipe on the right side, and the other end of the feed pipe is connected to the conveying pipe.

6. The multifunctional material feeding device for subway shield construction according to claim 1 is characterized in that: A support spring is fixed to the bottom of the rack, and the other end of the support spring is fixed to the inner bottom of the outer bin.

7. The multifunctional material feeding device for subway shield construction according to claim 1 is characterized in that: The conveying pipe includes an outer pipe and an inner pipe coaxially embedded in the outer pipe. The feed bin is connected to the inner pipe by a feed pipe. An installation space is formed between the outer pipe and the inner pipe. A plurality of stirring motors are arranged in the installation space. The output end of the stirring motor rotates and extends into the inner pipe. A stirring blade is also fixed to the output end of the stirring motor. The stirring blade is arranged to avoid the spiral pushing plate. A plurality of water inlet pipes are also fixed in the installation space. One end of the water inlet pipe is connected to an external water source, and the other end thereof extends into the inner pipe.

8. The multifunctional material feeding device for subway shield construction according to claim 1 is characterized in that: A power-off delay relay is also provided in the fixed compartment, and the power-off delay relay is electrically connected to the push switch and the motor group.

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