Shield tunneling machine mud adding mixing bin with stirring function

Abstract

The utility model belongs to the technical field of shield tunneling machine mud adding mixing bins, and particularly relates to a shield tunneling machine mud adding mixing bin with a stirring function, which comprises a bin body, a feeding device is mounted on the outer surface of the bin body, a stirring device is mounted in the bin body, and a conveying device is connected to the bottom of the bin body. The stirring device comprises an inner wall cleaning structure and a mixing structure, the mixing structure is installed at the bottom of the inner wall cleaning structure, the inner wall cleaning structure comprises a stirring motor, the output end of the stirring motor is connected with a stirring shaft, a cutter is installed at the position, close to the top end, of the outer surface of the stirring shaft, and a connecting rod is arranged at the bottom of the cutter; and a scraping plate is mounted at one end of the connecting rod. According to the shield tunneling machine mud adding and mixing bin with the stirring function, the cutters are used for smashing soil blocks, meanwhile, the scraping plates are used for scraping the inner wall, mud is prevented from adhering to the inner wall of the bin body, and then the stirring and mixing effect on the mud is improved through the upper rotary blades, the lower rotary blades and the material turning plates.

Description

Technical Field

[0001] This utility model relates to the technical field of mud mixing chambers for tunnel boring machines, specifically a mud mixing chamber for tunnel boring machines with a stirring function. Background Technology

[0002] With the acceleration of urbanization and the continuous advancement of infrastructure construction, shield tunneling technology, as an efficient and safe method for underground tunnel construction, has been widely applied and developed.

[0003] Earth pressure balance (EPB) shield tunneling is a widely used type of shield tunneling machine. Its working principle is to maintain the stability of the excavation face by controlling the balance between the earth pressure inside the earth chamber and the water and soil pressure at the excavation face. To achieve this goal, the excavated soil entering the earth chamber needs to be improved to give it good fluidity, water-stopping properties, and impermeability. The mud-mixing chamber was developed to address this need; its function is to uniformly mix appropriate amounts of mud and other additives with the excavated soil to improve its properties and meet the requirements of EPB shield tunneling.

[0004] The mixing effect of the mixing device in the mud mixing chamber of the existing shield tunneling machine is not ideal, resulting in uneven mixing of mud and slag, which affects the improvement quality of slag. The design of the chamber structure is unreasonable, which can easily lead to problems such as material accumulation and sticking to the walls, affecting the normal operation and service life of the equipment.

[0005] Therefore, we urgently need to provide a tunnel boring machine mud mixing chamber with a mixing function. Utility Model Content

[0006] The purpose of this utility model is to provide a shield machine mud mixing chamber with a stirring function, so as to solve the problems mentioned in the background art, that the stirring effect of the stirring device of the shield machine mud mixing chamber is not ideal, resulting in uneven mixing of mud and slag, which affects the improvement quality of slag; and that the design of the chamber structure is unreasonable, which easily leads to problems such as material accumulation and sticking to the wall, affecting the normal operation and service life of the equipment.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a mud mixing chamber for a tunnel boring machine with a stirring function, comprising a chamber body, a feeding device installed on the outer surface of the chamber body, a stirring device installed inside the chamber body, and a conveying device connected to the bottom of the chamber body.

[0008] The stirring device includes an inner wall cleaning structure and a mixing structure, with the mixing structure installed at the bottom of the inner wall cleaning structure.

[0009] The inner wall cleaning structure includes a stirring motor, the output end of which is connected to a stirring shaft. A cutter is installed on the outer surface of the stirring shaft near the top. A connecting rod is provided at the bottom of the cutter, and a scraper is installed at one end of the connecting rod.

[0010] Preferably, the mixing structure includes an upper rotating blade, a lower rotating blade at the bottom of the upper rotating blade, a rotating wheel at the bottom of the lower rotating blade, and a turning plate fixedly installed on the outer surface of the rotating wheel.

[0011] Preferably, the stirring motor is detachably installed on the top of the silo. The outer surface of the stirring shaft is connected to the middle of the top surface of the silo via a sealed bearing. The end of the connecting rod away from the scraper is fixedly connected to the outer surface of the stirring shaft. The outer surface of the scraper is slidably connected to the inner wall of the silo. The upper and lower blades are fixedly connected to the outer surface of the stirring shaft. The middle of the top surface of the rotating wheel is fixedly connected to the bottom end of the stirring shaft. The bottom of the tilting plate is slidably connected to the bottom surface of the silo. The upper and lower blades are mirror-mounted and are installed in two groups on the outer surface of the stirring shaft. A strip-shaped through hole is opened in the middle of the upper and lower blades. The tilting plate and the upper and lower blades are installed at a 60-degree angle. The stirring motor is a YDG series variable frequency speed-regulating three-phase asynchronous motor.

[0012] Preferably, the feeding device includes a soil inlet pipe, a mud inlet pipe is provided at the bottom of the soil inlet pipe, and a connecting pipe is provided at the bottom of the mud inlet pipe.

[0013] Preferably, the soil inlet pipe is fixedly installed in the middle of the top surface of the silo body near the left end, the mud inlet pipe is fixedly installed on the outer surface of the silo body near the top, and the connecting pipe is fixedly installed in the middle of the bottom surface of the silo body. The mud inlet pipes are evenly distributed circumferentially on the outer surface of the silo body near the top.

[0014] Preferably, the conveying device includes a discharge pipe, a fixing block is installed on the top of the outer surface of the discharge pipe, a rotary motor is installed at the left end of the discharge pipe, and an auger is connected to the output end of the rotary motor.

[0015] Preferably, the top of the fixing block is fixedly connected to the bottom surface of the hopper, the rotary motor is detachably installed on the left end of the discharge pipe, and the outer surface of the auger is slidably connected to the inner wall of the discharge pipe. The rotary motor is a Y-series three-phase asynchronous motor.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The mud mixing chamber of this tunnel boring machine with mixing function uses a mixing device to crush soil blocks with a cutter and scrape the inner wall with a scraper to prevent mud from sticking to the inner wall of the chamber. Then, the upper blade, lower blade and tipping plate are used to improve the mixing effect of the mud.

[0018] 2. The shield machine mud mixing chamber with mixing function, through the setting of the conveying device, uses a rotary motor to drive the screw conveyor to transport the mixed mud, which effectively ensures the mud conveying effect and prevents material blockage during the mud conveying process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 This is an enlarged view of the internal structure of this utility model;

[0021] Figure 3 This is an enlarged view of the stirring device of this utility model;

[0022] Figure 4 This is an enlarged view of the internal structure of the discharge device of this utility model.

[0023] In the diagram: 1. Bin body; 101. Soil inlet pipe; 102. Mud inlet pipe; 103. Connecting pipe; 201. Mixing motor; 202. Mixing shaft; 203. Cutter; 204. Connecting rod; 205. Scraper; 206. Upper blade; 207. Lower blade; 208. Rotating wheel; 209. Tilting plate; 301. Discharge pipe; 302. Fixing block; 303. Rotating motor; 304. Screwdriver. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0025] The mixing effect of the mixing device in the mud mixing chamber of the existing tunnel boring machine is not ideal, resulting in uneven mixing of mud and excavated soil, which affects the quality of the improved excavated soil. Furthermore, the unreasonable design of the chamber structure easily leads to problems such as material accumulation and adhesion to the walls, affecting the normal operation and service life of the equipment. Please refer to [the relevant documentation / reference]. Figures 1-4 The embodiment provides a shield machine mud mixing bin with stirring function, which can effectively improve the mixing effect of mud and improve the fluidity of mud. The shield machine mud mixing bin with stirring function includes a bin body 1, a feeding device installed on the outer surface of the bin body 1, a stirring device installed inside the bin body 1, and a conveying device connected to the bottom of the bin body 1.

[0026] The mixing device includes an inner wall cleaning structure and a mixing structure, with the mixing structure installed at the bottom of the inner wall cleaning structure. The inner wall cleaning structure includes a stirring motor 201, the output end of which is connected to a stirring shaft 202. A cutter 203 is mounted on the outer surface of the stirring shaft 202 near its top. A connecting rod 204 is located at the bottom of the cutter 203, and a scraper 205 is mounted at one end of the connecting rod 204. The mixing structure includes an upper rotating blade 206, a lower rotating blade 207 at the bottom of the upper rotating blade 206, and a rotating wheel 208 at the bottom of the lower rotating blade 207. A tilting plate 209 is fixedly mounted on the outer surface of the rotating wheel 208.

[0027] The stirring motor 201 is detachably installed on the top of the silo body 1. The outer surface of the stirring shaft 202 is connected to the middle of the top surface of the silo body 1 through a sealed bearing. The end of the connecting rod 204 away from the scraper 205 is fixedly connected to the outer surface of the stirring shaft 202. The outer surface of the scraper 205 is slidably connected to the inner wall of the silo body 1. The upper blade 206 and the lower blade 207 are fixedly connected to the outer surface of the stirring shaft 202. The middle of the top surface of the rotating wheel 208 is fixedly connected to the bottom end of the stirring shaft 202. The bottom of the tilting plate 209 is slidably connected to the bottom surface of the silo body 1.

[0028] The feeding device includes a soil inlet pipe 101, a mud inlet pipe 102 at the bottom of the soil inlet pipe 101, and a connecting pipe 103 at the bottom of the mud inlet pipe 102. The soil inlet pipe 101 is fixedly installed in the middle of the top surface of the silo body 1 near the left end, the mud inlet pipe 102 is fixedly installed on the outer surface of the silo body 1 near the top, and the connecting pipe 103 is fixedly installed in the middle of the bottom surface of the silo body 1.

[0029] By using a mixing device, the cutter 203 crushes the soil clods, while the scraper 205 scrapes the inner wall to prevent the mud from sticking to the inner wall of the silo 1. Then, the upper rotary blade 206, the lower rotary blade 207, and the tipping plate 209 are used to improve the mixing effect of the mud.

[0030] Soil is fed into the silo 1 through the soil inlet pipe 101, while mud is evenly injected into the silo 1 through the mud inlet pipe 102. Then, the mixing motor 201 is started to drive the mixing shaft 202 to rotate. The mixing shaft 202 drives the cutter 203 to rotate, thereby crushing the soil clods. During the rotation of the mixing shaft 202, the connecting rod 204 and the scraper 205 are also rotated. The scraper 205 scrapes the inner wall of the silo 1 to prevent the mud from sticking to the inner wall of the silo 1. During the rotation of the mixing shaft 202, the upper blade 206 and the lower blade 207 are also rotated, thereby creating a counterflow of the mixed mud and improving the mixing effect. When the mixing shaft 202 drives the rotating wheel 208 and the turning plate 209 to rotate, the bottom is turned over, which improves the mixing effect. Example

[0031] Based on Implementation 1, the existing technology still has the problem of material blockage and jamming during the material conveying process. Please refer to... Figures 1-4 This embodiment provides a tunnel boring machine mud mixing chamber with a stirring function, which can effectively solve the problem of conveying the mixture. The mud mixing chamber includes a conveying device including a discharge pipe 301. A fixing block 302 is installed on the top of the outer surface of the discharge pipe 301. A rotary motor 303 is installed on the left end of the discharge pipe 301, and an auger 304 is connected to the output end of the rotary motor 303. The top of the fixing block 302 is fixedly connected to the bottom surface of the chamber body 1. The rotary motor 303 is detachably installed on the left end of the discharge pipe 301. The outer surface of the auger 304 is slidably connected to the inner wall of the discharge pipe 301.

[0032] By setting up a conveying device, the rotary motor 303 drives the auger 304 to convey the mixed mud, which effectively ensures the conveying effect of the mud and prevents material blockage during the conveying process.

[0033] During material conveying, the mixed material is conveyed into the discharge pipe 301 through the connecting pipe 103. Then, the rotary motor 303 is started to drive the auger 304 to rotate, thereby using the auger 304 to convey the material. During the material conveying process, the auger 304 ensures the uniformity of the discharge and effectively prevents material blockage and jamming.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A mud mixing chamber for a tunnel boring machine with a mixing function, comprising a chamber body (1), characterized in that: A feeding device is installed on the outer surface of the silo (1), a stirring device is installed inside the silo (1), and a conveying device is connected to the bottom of the silo (1). The stirring device includes an inner wall cleaning structure and a mixing structure, wherein the mixing structure is installed at the bottom of the inner wall cleaning structure; The inner wall cleaning structure includes a stirring motor (201), the output end of which is connected to a stirring shaft (202). A cutter (203) is installed on the outer surface of the stirring shaft (202) near the top. A connecting rod (204) is provided at the bottom of the cutter (203), and a scraper (205) is installed at one end of the connecting rod (204).

2. The shield tunneling machine mud mixing chamber with stirring function according to claim 1, characterized in that: The hybrid structure includes an upper blade (206), a lower blade (207) at the bottom of the upper blade (206), a rotating wheel (208) at the bottom of the lower blade (207), and a turning plate (209) fixedly installed on the outer surface of the rotating wheel (208).

3. The shield tunneling machine mud mixing chamber with stirring function according to claim 2, characterized in that: The stirring motor (201) is detachably installed on the top of the silo body (1). The outer surface of the stirring shaft (202) is connected to the middle of the top surface of the silo body (1) through a sealed bearing. The end of the connecting rod (204) away from the scraper (205) is fixedly connected to the outer surface of the stirring shaft (202). The outer surface of the scraper (205) is slidably connected to the inner wall of the silo body (1). The upper blade (206) and the lower blade (207) are fixedly connected to the outer surface of the stirring shaft (202). The middle of the top surface of the rotating wheel (208) is fixedly connected to the bottom end of the stirring shaft (202). The bottom of the tipping plate (209) is slidably connected to the bottom surface of the inside of the silo body (1).

4. The shield tunneling machine mud mixing chamber with stirring function according to claim 1, characterized in that: The feeding device includes a soil inlet pipe (101), a mud inlet pipe (102) at the bottom of the soil inlet pipe (101), and a connecting pipe (103) at the bottom of the mud inlet pipe (102).

5. A mud mixing chamber for a tunnel boring machine with a stirring function according to claim 4, characterized in that: The soil inlet pipe (101) is fixedly installed in the middle of the top surface of the silo body (1) near the left end, the mud inlet pipe (102) is fixedly installed on the outer surface of the silo body (1) near the top, and the connecting pipe (103) is fixedly installed in the middle of the bottom surface of the silo body (1).

6. A mud mixing chamber for a tunnel boring machine with a stirring function according to claim 1, characterized in that: The conveying device includes a discharge pipe (301), a fixing block (302) is installed on the top of the outer surface of the discharge pipe (301), a rotary motor (303) is installed on the left end of the discharge pipe (301), and an auger (304) is connected to the output end of the rotary motor (303).

7. A mud mixing chamber for a tunnel boring machine with a stirring function according to claim 6, characterized in that: The top of the fixed block (302) is fixedly connected to the bottom surface of the silo (1), the rotary motor (303) is detachably installed on the left end of the discharge pipe (301), and the outer surface of the auger (304) is slidably connected to the inner wall of the discharge pipe (301).

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