Shield tunnel grouting stirring device

Abstract

The utility model provides a shield tunnel grouting stirring device which comprises a stirring tank, a stirring assembly, a movable partition plate assembly and a control end, the stirring assembly and the movable partition plate assembly are arranged in the stirring tank, the control end is arranged on one side of the stirring tank, and the control end is electrically connected with the stirring assembly and the movable partition plate assembly. Feeding ports communicated with the interior of the stirring tank are formed in the top of the stirring tank at intervals, the feeding ports comprise the first feeding port, the second feeding port and the third feeding port, the stirring assembly comprises a first spiral auger and a second spiral auger which are transversely arranged in parallel, and the movable partition plate assembly comprises a first movable partition plate mechanism and a second movable partition plate mechanism; a gravity sensor is arranged at a third feeding port, the dosage of grouting materials can be controlled, accurate control is achieved, feeding and stirring are synchronously carried out, the overall stirring time is shortened, stirring is more uniform through mutual cooperation of the first spiral auger and the second spiral auger, and the stirring efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield construction, in particular to a grouting stirring device for shield tunnels. Background Technique

[0002] As an underground transportation means, the subway can effectively alleviate the ground traffic congestion problem and is an important part of regional development. Major cities are accelerating the subway project. During the micro-disturbance grouting process of shield tunnels, when traditional slurries are manufactured, a traditional grouting mixer with a single feed inlet is generally used. When in use, grouting materials and water need to be poured into the mixer through this feed inlet first, and after starting the stirring, a slurry is formed. However, each time grouting materials are added, the process is relatively cumbersome, and there are problems such as easy stratification, pipe blockage, and waste, which affect the subsequent work efficiency.

[0003] Since the amount of grouting materials stirred inside is large, the stirring paddle has a large load during stirring, resulting in a relatively slow rotation of the stirring paddle. If the stirring speed needs to be increased, a driving motor with a larger power is required for driving. On the one hand, the power requirement is high. On the other hand, after the cement slurry is stirred too fast, it is easy to splash out from the top of the grouting mixer, which is not only difficult to clean but also causes waste.

[0004] The selection and proportion of grouting materials for shield tunnels are crucial for project safety and quality. It determines the performance of the grouting material throughout the grouting process. If the mixing ratio of various grouting materials is uneven, it is easy to have an adverse effect on the quality of the produced slurry. Content of the Utility Model

[0005] In view of the above situation, it is necessary to provide a grouting stirring device for shield tunnels to solve the problem that the quality of the slurry is adversely affected due to uneven feeding ratio in the existing mixer.

[0006] A shield tunnel grouting and stirring device, comprising a stirring tank, a stirring assembly, a movable partition assembly and a control end. The stirring assembly and the movable partition assembly are arranged in the stirring tank, the control end is arranged on one side of the stirring tank, and the control end is electrically connected to the stirring assembly and the movable partition assembly; the top of the stirring tank is provided with a first feed inlet, a second feed inlet and a third feed inlet at intervals, the first feed inlet, the second feed inlet and the third feed inlet are all communicated with the inside of the stirring tank, an inwardly recessed baffle is arranged at the bottom of the third feed inlet, and a gravity sensor is arranged on the inwardly recessed baffle, and the gravity sensor is used for measuring the weight of the feed above the inwardly recessed baffle. The stirring assembly includes a first spiral auger and a second spiral auger arranged horizontally in parallel, and both ends of the first spiral auger and both ends of the second spiral auger are fixedly connected to the inner wall of the stirring tank. The movable partition assembly includes two first movable partition mechanisms and two second movable partition mechanisms. The two first movable partition mechanisms are arranged oppositely, and the two second movable partition mechanisms are arranged oppositely. The first movable partition mechanism includes a first partition, and the second movable partition mechanism includes a second partition. The first partition is arranged above the second partition. The two first partitions and the two second partitions are movably connected to the stirring tank. When the two first partitions and the two second partitions are closed, the stirring tank is divided into a first accommodation space, a second accommodation space and a third accommodation space.

[0007] The beneficial effects of the present utility model:

[0008] 1. Through the three feed inlets arranged at intervals at the top of the stirring tank, the grouting materials are added into the stirring tank. Among them, the third feed inlet is provided with a gravity sensor, which can control the dosage of the grouting materials to achieve precise control. The first feed inlet and the second feed inlet can add water and water glass separately or simultaneously. During the shield micro-disturbance grouting process, the three feed inlets are applicable to both single-fluid grouting and double-fluid grouting, with a wide range of applications and improved efficiency.

[0009] 2. By arranging the first partition and the second partition to divide the stirring tank into a first accommodation space, a second accommodation space and a third accommodation space, after the slurry in the first accommodation space is stirred, the first movable partition mechanism is opened to make the slurry flow to the second accommodation space for secondary stirring. After completion, the first movable partition mechanism is closed. After stirring is completed, the second partition is opened, and the slurry is output through the third accommodation space. At the same time, the first accommodation space can feed materials into the stirring tank through the feed inlet, realizing the synchronous progress of feeding and stirring, shortening the overall stirring time and further improving the stirring efficiency.

[0010] 3. By arranging the first spiral auger and the second spiral auger, their mutual cooperation makes the stirring more uniform and further improves the stirring efficiency.

[0011] Further, the pitch of the first spiral auger is smaller than that of the second spiral auger.

[0012] In the present utility model, the slurry is preliminarily stirred by the first spiral auger, and after completion, the second spiral auger is used for fine stirring.

[0013] Further, the first moving partition mechanism further includes a first moving support frame, the first moving support frame is arranged below one end of the first partition board and is located outside the stirring tank, a first motor is arranged at the lower end of the first moving support frame, the first motor is used for driving the first moving support frame to move, first magnetic blocks and second magnetic blocks are respectively arranged at one ends of the two first partition boards facing away from the first moving support frame, the first magnetic block and the second magnetic block are magnetically attracted to each other, first baffle plates are arranged below the first magnetic block and the second magnetic block, and the first baffle plates are used for blocking the separation of the first partition board from the stirring tank.

[0014] Further, first scraping plates are oppositely arranged on the inner side wall of the stirring tank, the first scraping plates are movably connected with the inner side wall of the stirring tank, and the lower ends of the first scraping plates abut against the tops of the first partition boards.

[0015] In the present utility model, by arranging first scraping blades on the inner wall of the stirring tank, the slurry on the first partition board can flow more fully into the second accommodating space, achieving no waste and no material leakage.

[0016] Further, the second moving partition mechanism further includes a second moving support frame, the second moving support frame is arranged below one end of the second partition board and is located outside the stirring tank, a second motor is arranged at the lower end of the second moving support frame, the second motor is used for driving the second moving support frame to move, a third magnetic block is arranged on one of the second partition boards, a fourth magnetic block is arranged on the other second partition board, the third magnetic block and the fourth magnetic block are magnetically attracted to each other, second baffle plates are arranged below the third magnetic block and the fourth magnetic block, and the second baffle plates are used for blocking the separation of the second partition board from the stirring tank.

[0017] Further, second scraping plates are oppositely arranged on the inner side wall of the stirring tank, the second scraping plates are movably connected with the inner side wall of the stirring tank, and the lower ends of the second scraping plates abut against the tops of the second partition boards.

[0018] Further, the bottom of the stirring tank is in an inverted conical shape and is provided with an opening, and the opening is communicated with the outside.

[0019] Further, the stirring tank is arranged on a support, and a plurality of rollers are arranged below the support, and a third motor is arranged on the rollers.

[0020] Further, the control end includes an industrial control computer and a display panel. The display panel is used to display the test values of the gravity sensor, and the industrial control computer is used to control the sunken baffle, the first spiral auger, the second spiral auger, the first motor, the second motor, and the third motor. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the first embodiment of the present utility model;

[0022] Figure 2 It is a cross-section of the first embodiment of the present utility model Figure 1 ;

[0023] Figure 3 It is a cross-section of the first embodiment of the present utility model Figure 2 .

[0024] Description of the reference numerals: 1, mixing tank; 11, first feed inlet; 12, second feed inlet; 13, third feed inlet; 131, sunken baffle; 132, gravity sensor; 14, first accommodating space; 15, second accommodating space; 16, third accommodating space; 17, first scraping plate; 18, second scraping plate; 19, opening; 2, mixing assembly; 21, first spiral auger; 22, second spiral auger; 3, moving partition assembly; 31, first moving partition mechanism; 311, first partition; 312, first magnetic block; 313, second magnetic block; 314, first baffle; 315, first moving support frame; 3151, first motor; 32, second moving partition mechanism; 321, second partition; 322, third magnetic block; 323, fourth magnetic block; 324, second baffle; 325, second moving support frame; 3251, second motor; 4, control end; 41, industrial control computer; 42, display panel; 5, bracket; 51, universal wheel, 511, third motor. Detailed Embodiments

[0025] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixedly installed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items. Moreover, the various embodiments of this utility model, the features between the embodiments, and the features of the embodiments can be freely combined on the premise of no obvious conflict or contradiction.

[0028] A shield tunnel grouting stirring device, as Figures 1 to 3 shown, includes a stirring tank 1, a stirring assembly 2, a movable partition assembly 3 and a control end 4. The stirring assembly 2 and the movable partition assembly 3 are arranged in the stirring tank 1, and the control end 4 is arranged on one side of the stirring tank 1. The control end 1 is electrically connected to the stirring assembly 2 and the movable partition assembly 3.

[0029] Specifically, the top of the stirring tank 1 is provided with a first feed inlet 11, a second feed inlet 12 and a third feed inlet 13 at intervals. The first feed inlet 11, the second feed inlet 12 and the third feed inlet 13 are all communicated with the inside of the stirring tank 1. A sunken baffle 131 is provided at the bottom of the third feed inlet 13, and a gravity sensor 132 is provided on the sunken baffle 131. The gravity sensor 132 is used to measure the weight of the feed above the sunken baffle 131. By means of the three feed inlets arranged at intervals at the top of the stirring tank 1, the grouting material is added into the stirring tank 1. Among them, the third feed inlet 13 is provided with a gravity sensor 132, which can control the dosage of the grouting material to achieve precise control. The first feed inlet 11 and the second feed inlet 12 can add water and sodium silicate separately or simultaneously. The three feed inlets are applicable to both single-fluid grouting and double-fluid grouting during the shield micro-disturbance grouting process, with a wide range of applications and improved efficiency.

[0030] Specifically, the stirring assembly 2 includes a first spiral auger 21 and a second spiral auger 22 arranged horizontally in parallel. The two ends of the first spiral auger 21 and the two ends of the second spiral auger 22 are respectively fixed to the inner wall of the stirring tank 1. The first spiral auger 21 and the second spiral auger 22 stir the feed. By setting the first spiral auger 21 and the second spiral auger 22, their mutual cooperation makes the stirring more uniform and further improves the stirring efficiency.

[0031] Specifically, the movable partition assembly 3 includes two first movable partition mechanisms 31 and two second movable partition mechanisms 32. The first movable partition mechanism 31 includes a first partition 311 and a first movable support frame 315. The two first partitions 311 are arranged oppositely, and the two first partitions 311 are movably connected to the mixing tank 1. The first movable support frame 315 is arranged below one end of the first partition 311. The first movable support frame 315 is located outside the mixing tank 1. A first motor 3151 is provided at the lower end of the first movable support frame 315. The first motor 3151 is used to drive the first movable support frame 315 to move. A first magnetic block 312 is provided at one end of one first partition 311 facing away from the first movable support frame 315, and a second magnetic block 313 is provided at one end of the other first partition 311 facing away from the first movable support frame 315. The first magnetic block 312 and the second magnetic block 313 are magnetically attracted to each other. First baffles 314 are provided below both the first magnetic block 312 and the second magnetic block 313. The first baffles 314 are used to prevent the first partition 311 from separating from the mixing tank 1.

[0032] Specifically, the second movable partition mechanism 32 includes a second partition 321 and a second movable support frame 325. The two second partitions 321 are movably connected to the mixing tank 1. The two second partitions 321 are arranged oppositely. The first partition 311 is arranged above the second partition 321. The second movable support frame 325 is arranged below one end of the second partition 321. The second movable support frame 325 is located outside the mixing tank 1. A second motor 3251 is provided at the lower end of the second movable support frame 325. The second motor 3251 is used to drive the second movable support frame to move. A third magnetic block 322 is provided at one end of one second partition 321 facing away from the second movable support frame 325, and a fourth magnetic block 323 is provided at one end of the other second partition 321 facing away from the second movable support frame 325. The third magnetic block 322 and the fourth magnetic block 323 are magnetically attracted to each other. Second baffles 324 are respectively arranged below the third magnetic block 322 and the fourth magnetic block 324. The second baffles 324 are used to prevent the second partition 321 from separating from the mixing tank 1.

[0033] Specifically, a first slurry scraping plate 17 and a second slurry scraping plate 18 are respectively arranged on the inner side wall of the mixing tank 1. The first slurry scraping plate 17 and the second slurry scraping plate 18 are movably connected to the inner side wall of the mixing tank 1. The lower end of the first slurry scraping plate 17 abuts against the top of the first partition 311, and the lower end of the second slurry scraping plate 18 abuts against the top of the second partition 321. By arranging the first slurry scraping plate 17 and the second slurry scraping plate 18 on the inner wall of the mixing tank 1, the slurry on the first partition 17 and the second partition 18 can flow more fully into the second accommodation space 15 and the third accommodation space 16, achieving no waste and no material leakage.

[0034] Specifically, when the two first partition plates 311 and the two second partition plates 321 are closed, the mixing tank 1 is partitioned into a first accommodation space 14, a second accommodation space 15, and a third accommodation space 16. The pitch of the first spiral auger 21 is smaller than that of the second spiral auger 22. Through the first spiral auger 21, the slurry in the first accommodation space 14 is preliminarily stirred. After completion, through the second spiral auger 22, the slurry in the second accommodation space 15 is finely stirred. By arranging the first partition plate 311 and the second partition plate 321 to partition the mixing tank into the first accommodation space 14, the second accommodation space 15, and the third accommodation space 16, after the slurry in the first accommodation space 14 is stirred, the first partition plate 311 is moved to make the slurry flow into the second accommodation space 15 for secondary stirring. After completion, the first partition plate 311 is closed. After stirring is completed, the second partition plate 321 is opened, and the slurry is output outward through the third accommodation space 16. Moreover, the first accommodation space 14 can be fed into the mixing tank 1 through the feed port, realizing the synchronous progress of feeding and stirring, shortening the overall stirring time, and further improving the stirring efficiency.

[0035] Specifically, the bottom of the mixing tank 1 is in an inverted conical shape and is provided with an opening 19, and the opening 19 is communicated with the outside, and the stirred slurry flows out through the opening 19.

[0036] Specifically, the mixing tank 1 is arranged on a bracket 5, and a plurality of rollers 51 are provided below the bracket 5. A third motor 511 is provided on the rollers 51, and the rollers 51 can realize the convenient movement of the mixing tank 1.

[0037] Specifically, the control terminal 4 includes an industrial control computer 41 and a display panel 42. The display panel 42 is used to display the test values of the gravity sensor, and the industrial control computer 41 is used to control the indentation baffle 131, the first spiral auger 21, the second spiral auger 22, the first motor 3151, the second motor 3251, and the third motor 511.

[0038] The implementation process of the present utility model is as follows:

[0039] In use, sodium silicate is added through the first feed inlet 11, water is added through the second feed inlet 12, and cement is added through the third feed inlet 13. The sunken baffle 131 at the bottom of the third feed inlet 13 is initially in a closed state. The gravity sensor 132 at the bottom of the sunken baffle 131 detects the amount of cement used. After the display panel shows that the amount of cement used reaches the preset value, the industrial control computer 41 controls the sunken plate 5 to open, allowing the cement to enter the mixing tank 1. At this time, sodium silicate, water, and cement are all in the first accommodating space 14. The industrial control computer 41 controls the first screw auger 21 to stir sodium silicate, water, and cement. After sufficient stirring, two first motors 3151 respectively drive two first moving support frames 315 to drive two first partition plates 321 to move outward from the closed state. When the first stop piece 324 touches the inner wall of the mixing tank 1, the first partition plates 321 stop moving outward. By using the first scraping blades 17 provided on the inner wall of the mixing tank 1, the slurry on the first partition plates 321 can flow more fully into the second accommodating space 15. Then, two first motors 3151 respectively drive two first moving support frames 315 to drive two first partition plates 321 to approach each other. The two first partition plates 321 are closed by the attraction between the first magnetic block 312 and the second magnetic block 313. After that, the industrial control computer 41 controls the second screw auger 22 to perform secondary stirring on the slurry in the second accommodating space 15. After sufficient stirring, two second motors 3251 respectively drive two second moving support frames 325 to drive two second partition plates 321 to move outward from the closed state. The slurry flows from the second accommodating space 15 to the third accommodating space 16. When the second stop piece 324 touches the inner wall of the mixing tank 1, the second partition plates 321 stop moving outward. By using the second scraping blades 18 provided on the inner wall of the mixing tank 1, the slurry on the second partition plates 321 can flow more fully into the third accommodating space 16. The two second partition plates 321 are closed by the attraction between the third magnetic block 322 and the fourth magnetic block 323. At the same time, the slurry is discharged through the opening 19. By using the third motor 511 to drive the roller 51, the convenient movement of the mixing tank 1 can be realized, which is more convenient for use at the construction site.

[0040] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0041] The above-described embodiments merely represent the implementation modes of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A grouting and mixing device for shield tunnels, characterized in that: It includes a mixing tank, a mixing assembly, a movable partition assembly and a control end. The mixing assembly and the movable partition assembly are arranged inside the mixing tank, the control end is arranged on one side of the mixing tank, and the control end is electrically connected to the mixing assembly and the movable partition assembly; at the top of the mixing tank, a first feed inlet, a second feed inlet and a third feed inlet are arranged at intervals. The first feed inlet, the second feed inlet and the third feed inlet are all communicated with the inside of the mixing tank. There is an inward sunken baffle at the bottom of the third feed inlet, and a gravity sensor is arranged on the inward sunken baffle. The gravity sensor is used to measure the weight of the feed above the inward sunken baffle. The mixing assembly includes a first spiral auger and a second spiral auger arranged horizontally in parallel. Both ends of the first spiral auger and both ends of the second spiral auger are fixedly connected to the inner wall of the mixing tank. The movable partition assembly includes two first movable partition mechanisms and two second movable partition mechanisms. The two first movable partition mechanisms are arranged oppositely, and the two second movable partition mechanisms are arranged oppositely. The first movable partition mechanism includes a first partition, and the second movable partition mechanism includes a second partition. The first partition is arranged above the second partition. The two first partitions and the two second partitions are movably connected to the mixing tank. When the two first partitions and the two second partitions are closed, the mixing tank is divided into a first accommodation space, a second accommodation space and a third accommodation space.

2. The grouting and stirring device for shield tunnels according to claim 1, wherein: The pitch of the first spiral auger is smaller than that of the second spiral auger.

3. The grouting and stirring device for shield tunnel according to claim 1, wherein: The first movable partition mechanism further includes a first movable support frame. The first movable support frame is arranged below one end of the first partition and is located outside the mixing tank. A first motor is arranged at the lower end of the first movable support frame. The first motor is used to drive the first movable support frame to move. A first magnetic block is arranged on one of the first partitions, and a second magnetic block is arranged on the other first partition. The first magnetic block and the second magnetic block attract each other magnetically. First stop pieces are arranged below the first magnetic block and the second magnetic block. The first stop pieces are used to prevent the first partition from separating from the mixing tank.

4. The grouting and stirring device for shield tunnel according to claim 3, wherein: First scraping plates are arranged oppositely on the inner side wall of the mixing tank. The first scraping plates are movably connected to the inner side wall of the mixing tank. The lower ends of the first scraping plates abut against the tops of the first partitions.

5. The grouting and mixing device for shield tunnel according to claim 3, wherein: The second movable partition mechanism further includes a second movable support frame. The second movable support frame is arranged below one end of the second partition and is located outside the mixing tank. A second motor is arranged at the lower end of the second movable support frame. The second motor is used to drive the second movable support frame to move. A third magnetic block is arranged on one of the second partitions, and a fourth magnetic block is arranged on the other second partition. The third magnetic block and the fourth magnetic block attract each other magnetically. Second stop pieces are arranged below the third magnetic block and the fourth magnetic block. The second stop pieces are used to prevent the second partition from separating from the mixing tank.

6. The grouting and stirring device for shield tunnel according to claim 5, wherein: On the inner side walls of the mixing tank, second slurry scraping plates are oppositely provided. The second slurry scraping plates are movably connected to the inner side walls of the mixing tank, and the lower ends of the second slurry scraping plates abut against the tops of the second partition plates.

7. The grouting and stirring device for shield tunnel according to claim 1, characterized in that: The bottom of the mixing tank is in an inverted conical shape and is provided with an opening, and the opening communicates with the outside.

8. The grouting and stirring device for shield tunnel according to claim 5, wherein: The mixing tank is arranged on a bracket, and a plurality of rollers are provided below the bracket, and a third motor is arranged on the rollers.

9. The grouting and stirring device for shield tunnel according to claim 8, wherein: The control end includes an industrial control computer and a display panel. The display panel is used for displaying the test values of the gravity sensor, and the industrial control computer is used for controlling the indentation baffle, the first spiral auger, the second spiral auger, the first motor, the second motor and the third motor.

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