Shield suspended automatic safe slag discharge device and method

Abstract

The present invention provides a shield suspended automatic safe slag discharge device and method, which belongs to the field of building construction technology, and includes a lifting mechanism, a plurality of spiral slag extraction pipes and a slag discharge pipe. A storage box is suspended on the hook of the lifting mechanism, and a plurality of motors are arranged in the storage box; the plurality of spiral slag extraction pipes are respectively connected to the plurality of motors, and the spiral slag extraction pipes are used to extract slag with the help of the motors; the slag discharge pipes are respectively connected to the plurality of spiral slag extraction pipes, and are used to guide the slag in the spiral slag extraction pipes into the slag pool. The shield slag discharge method uses the shield suspended automatic safe slag discharge device. The shield suspended automatic safe slag discharge device and method provided by the present invention are provided with a lifting mechanism to realize mobile slag extraction, and a plurality of motors and a plurality of spiral slag extraction pipes are provided to extract slag at the same time, thereby improving the efficiency of slag extraction.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and more specifically, relates to a shield suspended automatic safe slag discharging device and method. Background Art

[0002] With the rapid development of urban rail transit and the increasing advancement of shield construction technology, shield construction is not only about pursuing speed and efficiency, but also about pursuing automation, rationalization and efficiency. During shield construction, the shield slag in the tunnel is usually pumped out by a motor-driven slag extraction pipe, which cannot achieve movable slag extraction, and the slag extraction efficiency of a single motor is low. Summary of the invention

[0003] The object of the present invention is to provide a shield suspended automatic safe slag discharge device and method, aiming to solve the problems that the existing shield slag discharge device cannot realize movable slag extraction and the slag extraction efficiency of one motor is low.

[0004] To achieve the above object, the technical solution adopted by the present invention is: to provide a shield suspended automatic safe slag discharge device, comprising:

[0005] A lifting mechanism, wherein a storage box is mounted on the hook, and a plurality of motors are arranged in the storage box;

[0006] A plurality of spiral slag extraction pipes are respectively connected to the plurality of motors, and the spiral slag extraction pipes are used to extract slag with the help of the motors; and

[0007] The slag discharge pipes are respectively connected to the plurality of spiral slag extraction pipes and are used to guide the slag in the spiral slag extraction pipes into the slag pool.

[0008] As another embodiment of the present application, the top end of the spiral slag extraction pipe is detachably connected to the storage box; the spiral shaft of the spiral slag extraction pipe is connected to the rotating shaft of the motor through a gear.

[0009] As another embodiment of the present application, a plurality of the spiral slag extraction pipes are respectively provided with water flushing pipes.

[0010] As another embodiment of the present application, a screen is provided above the slag pool for filtering the slag into mud.

[0011] As another embodiment of the present application, it also includes:

[0012] A slurry pump for pumping the slurry into a sedimentation tank; and

[0013] The filter press is used for filtering the sediment in the mud.

[0014] As another embodiment of the present application, the spiral slag extraction pipe is connected to the storage box via a flange.

[0015] As another embodiment of the present application, the lifting mechanism is a cantilever crane.

[0016] The beneficial effects of the shield suspended automatic safe slag discharge device provided by the present invention are as follows: compared with the prior art, the shield suspended automatic safe slag discharge device of the present invention has a storage box suspended on the hook of the lifting mechanism, and a plurality of motors are arranged in the storage box, and the lifting mechanism can drive the motors in the storage box to realize mobile slag extraction; a plurality of spiral slag extraction pipes are respectively connected to a plurality of motors, and the spiral slag extraction pipes are used to extract slag with the help of the motors, and a plurality of motors and a plurality of spiral slag extraction pipes are arranged to extract slag at the same time, which can improve the efficiency of slag extraction; the slag discharge pipes are respectively connected to a plurality of spiral slag extraction pipes, and are used to guide the slag in the spiral slag extraction pipes into the slag pool. The shield suspended automatic safe slag discharge device of the present invention is provided with a lifting mechanism to realize mobile slag extraction, and a plurality of motors and a plurality of spiral slag extraction pipes are arranged to extract slag at the same time, which improves the efficiency of slag extraction.

[0017] The present invention also provides a shield slag discharge method, comprising the following steps:

[0018] S1: Start the motor to rotate forward, driving the spiral shaft in the spiral slag extraction pipe to rotate forward, and the slag enters from the bottom of the spiral slag extraction pipe and is discharged into the screen through the slag discharge pipe at the top;

[0019] S2: The screen screens the slag into solid particles and mud;

[0020] S3: The mud is pumped into a sedimentation tank, the sediment is separated from the mud, and the sediment is filtered.

[0021] As another embodiment of the present application, the step S3 further includes:

[0022] After the slag extraction is completed, the motor is adjusted to rotate in the reverse direction to drive the spiral shaft in the spiral slag extraction pipe to reverse, and the slag remaining on the spiral shaft is thrown out of the spiral slag extraction pipe to complete the cleaning of the spiral slag extraction pipe.

[0023] As another embodiment of the present application, the step of separating the slurry from the sediment in S3 includes:

[0024] A flocculant is added into the sedimentation tank to separate the sediment from the slurry.

[0025] The shield slag discharge method provided by the present invention has the following beneficial effects: compared with the prior art, the shield slag discharge method of the present invention first starts the motor to rotate forward, driving the spiral shaft in the spiral slag extraction pipe to rotate forward, and the slag enters from the bottom end of the spiral slag extraction pipe and is discharged into the screen through the slag discharge pipe at the top thereof; secondly, the screen screens the slag into solid particles and mud; finally, the mud is pumped into a sedimentation tank, the mud is separated from the sediment, and the sediment is filtered. The shield slag discharge method of the present invention is provided with a lifting mechanism to realize mobile slag extraction, and multiple motors and multiple spiral slag extraction pipes are provided to extract slag simultaneously, thereby improving the efficiency of slag extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of a shield suspended automatic safe slag discharge device provided in an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the structure of the connection between the spiral slag extraction pipe and the slag discharge pipe provided in an embodiment of the present invention;

[0029] Figure 3 for Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0030] Figure 4 A schematic diagram of a top view of the structure of a first gear provided by an embodiment of the present invention;

[0031] Figure 5 A schematic diagram of a top view of the second gear provided in an embodiment of the present invention;

[0032] Figure 6 A schematic diagram of a top view of the structure of a first ratchet provided in an embodiment of the present invention;

[0033] Figure 7 A schematic top view of the structure of a second ratchet provided in an embodiment of the present invention.

[0034] In the figure: 1. lifting mechanism; 2. storage box; 3. motor; 4. spiral slag extraction pipe; 41. spiral shaft; 5. slag discharge pipe; 6. slag pool; 7. screen; 8. mud; 9. particle storage area; 10. mud pump; 11. filter press; 12. first gear; 13. second gear; 14. first ratchet; 141. first transmission tooth; 15. second ratchet; 151. second transmission tooth; 16. slag; 17. installation pipe. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] Please also read Figure 1 and Figure 2 , the shield suspended automatic safe slag discharge device provided by the present invention is now described. The shield suspended automatic safe slag discharge device comprises a lifting mechanism 1, a plurality of spiral slag extraction pipes 4 and a slag discharge pipe 5. A storage box 2 is suspended on the hook of the lifting mechanism 1, and a plurality of motors 3 are arranged in the storage box 2; the plurality of spiral slag extraction pipes 4 are respectively connected to the plurality of motors 3, and the spiral slag extraction pipes 4 are used to extract slag 16 with the help of the motors 3; the slag discharge pipe 5 is respectively connected to the plurality of spiral slag extraction pipes 4, and is used to guide the slag 16 in the spiral slag extraction pipes 4 into the slag pool 6.

[0037] In this embodiment, multiple motors 3 are fixed in the storage box 2. In order to ensure the stability of the motor 3 in the storage box 2, the motor 3 can be directly welded in the storage box 2; the lifting mechanism 1 is a cantilever crane, and the cantilever crane can stably lift the storage box; a mounting pipe 17 is installed on the same side of the multiple spiral slag extraction pipes 4, and the multiple mounting pipes 17 are connected to the slag discharge pipe 5 at the same time, so that the slag 16 extracted from the spiral slag extraction pipe 4 is introduced into the slag discharge pipe 5, and then discharged into the slag pool 6. Generally, 4-5 groups of spiral slag extraction pipes 4 are selected, and the diameter of the spiral slag extraction pipe 4 is 200mm; the motor 3 adopts a 50kw three-phase motor, and the power supply of the motor 3 is synchronized to ensure a consistent slag extraction rate.

[0038] Compared with the prior art, the shield suspended automatic safe slag discharge device provided by the present invention has a storage box 2 suspended on the hook of the lifting mechanism 1, and multiple motors 3 are arranged in the storage box 2. The lifting mechanism 1 can drive the motors 3 in the storage box 2 to realize mobile slag extraction; multiple spiral slag extraction pipes 4 are respectively connected to the multiple motors 3, and the spiral slag extraction pipes 4 are used to extract slag 16 with the help of the motors 3. Multiple motors 3 and multiple spiral slag extraction pipes 4 are arranged to extract slag 16 at the same time, which can improve the efficiency of slag extraction; the slag discharge pipe 5 is respectively connected to the multiple spiral slag extraction pipes 4, and is used to guide the slag 16 in the spiral slag extraction pipes 4 into the slag pool 6. The shield suspended automatic safe slag discharge device of the present invention is provided with a lifting mechanism 1 to realize mobile slag extraction, and multiple motors 3 and multiple spiral slag extraction pipes 4 are arranged to extract slag at the same time, which improves the efficiency of slag extraction.

[0039] As a specific implementation of the embodiment of the present invention, please refer to Figures 3 to 7The top of the spiral slag extraction pipe 4 is detachably connected to the storage box 2. Optionally, the spiral slag extraction pipe 4 is connected to the storage box 2 via a flange. The spiral shaft 41 of the spiral slag extraction pipe 4 is connected to the rotating shaft of the motor 3 via a gear. Optionally, a gear is provided on the spiral shaft 41, and a gear matching the gear on the spiral shaft 41 is provided on the rotating shaft of the motor 3. The spiral shaft 41 is connected to the motor 3 via a gear. When the motor 3 is reversed, the motor 3 directly drives the spiral shaft 41 to rotate. When the motor 3 is connected to the spiral shaft 41 via a gear, the rotation speed of the spiral shaft 41 is smaller, which reduces the rotation speed of the spiral shaft 41 and prolongs the service life of the spiral shaft 41. The spiral shaft 41 of the spiral slag extraction pipe 4 is connected to the rotating shaft of the motor 3 through gears, and can also be as follows: a first gear 12 and a second gear 13 are respectively installed along the axial direction of the rotating shaft of the motor 3, the first gear 12 is located above the second gear 13, the first gear 12 and the second gear 13 are arranged below the storage box 2, and a first ratchet 14 and a second ratchet 15 are respectively installed along the axial direction of the spiral shaft 41 of the spiral slag extraction pipe 4, the first ratchet 14 is located above the second ratchet 15, a first through hole and a second through hole are provided on the side surface of the tube wall of the spiral slag extraction pipe 4, a protrusion is provided at the position where the second ratchet 15 is installed in the spiral slag extraction pipe 4, and a second through hole is provided on one side of the protrusion so that the second ratchet 15 can rotate in the spiral slag extraction pipe 4, the first through hole is located above the second through hole, and a first transmission tooth 141 is provided on the outer periphery of the first ratchet 14, and the first transmission tooth 141 is connected to the first gear through the first through hole 12 is meshed, and a second transmission tooth 151 is arranged on the outer periphery of the second ratchet 15, and the second transmission tooth 151 is meshed with the second gear 13 through the second through hole. The diameter of the first transmission tooth 141 is smaller than the diameter of the first gear 12, and the diameter of the second transmission tooth 151 is larger than the diameter of the second gear 13; the first ratchet 14 and the second ratchet 15 are arranged so that one of them always rotates and the other does not rotate, that is, when the motor 3 rotates forward, the first gear 12 rotates and drives the first transmission tooth 141 to rotate, thereby driving the first ratchet 14 to rotate, and the second ratchet 15 does not rotate. The first ratchet 14 extracts the slag 16 driven by the motor 3; when the motor 3 is reversed, the second gear 13 drives the second transmission tooth 151 to rotate, thereby driving the second ratchet 15 to rotate, and the first ratchet 14 does not rotate. The second ratchet 15 is driven by the motor 3 to brush off the slag 16 adhered to the spiral shaft 41, thereby cleaning the spiral slag extraction pipe 4. Because a larger driving force is required during slag extraction, the diameter of the first transmission tooth 141 is set to be smaller than the diameter of the first gear 12, so that the rotation speed of the screw shaft 41 is increased. After the slag extraction is completed, a large amount of slag 16 accumulates in the spiral slag extraction tube 4, which will slow down the rotation speed of the screw shaft 41. Therefore, the diameter of the second transmission tooth 151 is set to be larger than the diameter of the second gear 13, so that the rotation speed of the screw shaft 41 is reduced. When the motor 3 reverses, the rotation speed decreases compared to the forward rotation, thereby reducing the rotation speed of the screw shaft 41 and extending the service life of the screw shaft 41.

[0040] As a specific implementation of the embodiment of the present invention, not shown in the figure, a plurality of spiral slag extraction pipes 4 are respectively provided with flushing pipes, and water for flushing the spiral slag extraction pipes 4 is provided into the flushing pipes through a booster pump. When the spiral slag extraction pipes 4 are blocked, the booster pump can be used to flush the spiral slag extraction pipes 4, thereby opening the spiral slag extraction pipes 4, or after the slag extraction is completed, the residual slag 16 in the spiral slag extraction pipes 4 can be discharged through the combined action of the reverse rotation of the motor 3 and the flushing pipes.

[0041] As a specific implementation of the embodiment of the present invention, refer to Figure 1 A screen 7 is provided above the slag pool 6. Optionally, the screen 7 is a linear vibrating screen, which screens the solid particles remaining on the linear vibrating screen to the solid particle storage area 9, and the mud 8 enters the slag pool 6 through the linear vibrating screen.

[0042] As a specific implementation of the embodiment of the present invention, please refer to Figure 1 The shield suspended automatic safety slag discharge device also includes a mud pump 10 and a filter press 11. The mud pump 10 can be a horizontal mud pump, which pumps the mud 8 collected in the slag pool 6 into the sedimentation tank; the filter press 11 can be a plate-frame filter press 11, and flocculants are added to the mud 8 in the sedimentation tank. After the mud 8 is precipitated, it is pumped into the plate-frame filter press 11 for high-pressure filtration. The filtration time is 40-60 minutes, and finally mud cake and clear water are obtained. The water content of the mud cake is about 40%, realizing the recycling of resources.

[0043] The present invention also provides a shield slag discharge method, comprising the following steps:

[0044] S1: Start the motor 3 to rotate forward, the first gear 12 on the motor 3 drives the spiral shaft 41 of the spiral slag extraction pipe 4 connected to the first ratchet 14 to rotate forward, the slag 16 enters from the bottom end of the spiral slag extraction pipe 4, and is discharged into the linear vibrating screen through the slag discharge pipe 5 at the top thereof;

[0045] S2: screening the slag 16 into solid particles and mud 8 under high-speed vibration of the linear vibrating screen;

[0046] S3: The mud 8 is pumped into a sedimentation tank by a mud pump 10, a flocculant is added into the sedimentation tank to precipitate the mud 8, and the filter press 11 filters the precipitate;

[0047] S4: After the slag extraction is completed, the motor 3 is adjusted to rotate in the opposite direction, and the second gear 13 on the motor 3 drives the spiral shaft 41 of the spiral slag extraction pipe 4 connected to the first ratchet 14 to reverse, and the slag 16 remaining on the spiral shaft 41 is thrown out of the spiral slag extraction pipe 4 to complete the cleaning of the spiral slag extraction pipe 4.

[0048] Among them, since the diameter of the first transmission tooth 141 is smaller than the diameter of the first gear 12, and the diameter of the second transmission tooth 151 is larger than the diameter of the second gear 13, a higher speed can be provided when extracting the slag 16. When the slag extraction is completed, the slag 16 in the spiral slag extraction pipe 4 is slowly thrown away, thereby increasing the service life of the spiral shaft 41 in the spiral slag extraction pipe 4.

[0049] Compared with the prior art, the shield slag discharge method provided by the present invention first starts the motor 3 to rotate forward, the first gear 12 on the motor 3 drives the spiral shaft 41 of the spiral slag extraction pipe 4 connected to the first ratchet 14 to rotate forward, the slag 16 enters from the bottom end of the spiral slag extraction pipe 4, and quickly passes through the slag discharge pipe 5 at the top thereof and is discharged into the linear vibrating screen; secondly, the slag 16 is screened into solid particles and mud 8 under the high-speed vibration of the linear vibrating screen; the mud 8 is pumped into the sedimentation tank by the mud pump 10 again, and a flocculant is added to the sedimentation tank to precipitate the mud 8, and the filter press 11 performs filter pressing on the sediment; finally, after the slag extraction is completed, the motor 3 is adjusted to rotate in the opposite direction, the second gear 13 on the motor 3 drives the spiral shaft 41 of the spiral slag extraction pipe 4 connected to the first ratchet 14 to rotate in the opposite direction, and the slag 16 remaining on the spiral shaft 41 is thrown out of the spiral slag extraction pipe 4, so as to complete the cleaning of the spiral slag extraction pipe 4. The forward and reverse rotation of the motor 3 realizes fast slag extraction and slow slag throwing, and prolongs the service life of the spiral shaft 41. The shield slag removal method of the present invention changes the speed of slag extraction and slag rejection by the motor 3, thereby extending the service life of the screw shaft 41.

[0050] As a specific implementation of the embodiment of the present invention, in step S3, the flocculant added to the sedimentation tank is polyacrylamide, and the mud 8 is precipitated under the action of the flocculant.

[0051] As a specific implementation of the embodiment of the present invention, in step S2 , after the screen 7 separates the slag 16 into solid particles and mud 8 , it also includes: screening the solid particles into the particle storage area 9 , and screening the mud 8 into the slag pool 6 through the screen 7 .

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The shield suspended automatic safe slag discharge device is characterized by: include: A lifting mechanism, wherein a storage box is mounted on the hook, and a plurality of motors are arranged in the storage box; A plurality of spiral slag extraction pipes are respectively connected to the plurality of motors, and the spiral slag extraction pipes are used to extract slag with the help of the motors; and A slag discharge pipe, connected to the plurality of spiral slag extraction pipes, respectively, for guiding the slag in the spiral slag extraction pipes into the slag pool; The spiral shaft of the spiral slag extraction pipe is connected to the rotating shaft of the motor through a gear; A first gear and a second gear are respectively installed along the axial direction of the rotating shaft of the motor, the first gear is located above the second gear, the first gear and the second gear are arranged below the storage box, and a first ratchet wheel and a second ratchet wheel are respectively installed along the axial direction of the spiral shaft of the spiral slag extraction pipe, the first ratchet wheel is located above the second ratchet wheel, a first through hole and a second through hole are provided on the side surface of the tube wall of the spiral slag extraction pipe, a protrusion is provided at the position where the second ratchet wheel is installed on the spiral slag extraction pipe, and a second through hole is provided on one side of the protrusion so that the second ratchet wheel rotates in the spiral slag extraction pipe, the first through hole is located above the second through hole, a first transmission tooth is provided on the outer periphery of the first ratchet wheel, the first transmission tooth is meshed with the first gear through the first through hole, a second transmission tooth is provided on the outer periphery of the second ratchet wheel, the second transmission tooth is meshed with the second gear through the second through hole, a diameter of the first transmission tooth is smaller than a diameter of the first gear, a diameter of the second transmission tooth is larger than a diameter of the second gear, and the first ratchet wheel and the second ratchet wheel are arranged so that one of them always rotates and the other does not rotate; Among them, when the motor rotates forward, the first gear rotates and drives the first transmission tooth to rotate, thereby driving the first ratchet to rotate, and the second ratchet does not rotate. The first ratchet extracts the debris driven by the motor; when the motor rotates reversely, the second gear drives the second transmission tooth to rotate, thereby driving the second ratchet to rotate, and the first ratchet does not rotate. The second ratchet brushes off the debris adhered to the spiral shaft under the drive of the motor, thereby cleaning the spiral slag extraction pipe.

2. The shield suspended automatic safe slag discharge device according to claim 1, characterized in that: The top end of the spiral slag extraction pipe is detachably connected to the storage box.

3. The shield suspended automatic safe slag discharge device according to claim 1, characterized in that: A plurality of the spiral slag extraction pipes are respectively provided with water flushing pipes.

4. The shield suspended automatic safe slag discharge device according to claim 1, characterized in that: A screen for filtering the slag into mud is arranged above the slag pool.

5. The shield suspended automatic safe slag discharge device according to claim 4, characterized in that: Also includes: A mud pump, used for pumping the mud into a sedimentation tank; and The filter press is used for filtering the sediment in the mud.

6. The shield suspended automatic safe slag discharge device according to claim 2, characterized in that: The spiral slag extraction pipe is connected to the storage box via a flange.

7. The shield suspended automatic safe slag discharge device according to claim 1, characterized in that: The lifting mechanism is a cantilever crane.

8. A shield slag discharge method, using the shield suspended automatic safe slag discharge device according to any one of claims 1 to 7, characterized in that: include: S1: Start the motor to rotate forward, driving the spiral shaft in the spiral slag extraction pipe to rotate forward, and the slag enters from the bottom of the spiral slag extraction pipe and is discharged into the screen through the slag discharge pipe at the top; S2: The screen screens the slag into solid particles and mud; S3: The mud is pumped into a sedimentation tank, the sediment is separated from the mud, and the sediment is filtered.

9. The shield slag removal method according to claim 8, characterized in that: The S3 also includes: After the slag extraction is completed, the motor is adjusted to rotate in the reverse direction to drive the spiral shaft in the spiral slag extraction pipe to reverse, and the slag remaining on the spiral shaft is thrown out of the spiral slag extraction pipe to complete the cleaning of the spiral slag extraction pipe.

10. The shield slag removal method according to claim 8, characterized in that: The step of separating the precipitate from the slurry in S3 comprises: A flocculant is added into the sedimentation tank to separate the sediment from the slurry.

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