CN215949487U - Unearthing device and earth pressure balance push bench with same - Google Patents
Unearthing device and earth pressure balance push bench with same Download PDFInfo
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- CN215949487U CN215949487U CN202122646136.8U CN202122646136U CN215949487U CN 215949487 U CN215949487 U CN 215949487U CN 202122646136 U CN202122646136 U CN 202122646136U CN 215949487 U CN215949487 U CN 215949487U
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Abstract
The utility model provides a soil discharging device and a soil pressure balance push bench provided with the same, wherein the soil discharging device is erected in a concrete pipe where the push bench is located through a support; the main body of the soil discharging device is of a horizontal long cylindrical structure, a thick grating and a thin grating are separated into a communicated stirring bin, a settling bin and a slurry bin, a stirring shaft in the barrel is provided with a first stirring paddle and a second stirring paddle corresponding to the stirring bin and the slurry bin respectively, the bottom of the stirring bin and the bottom of the settling bin are provided with a first impurity discharging hole and a second impurity discharging hole respectively, the lower opening of a slag discharging system of the pipe jacking machine is positioned above the stirring bin, discharged muck falls into the stirring bin through a feeding hole with a safety grating arranged at the top of the barrel, the barrel is provided with a water inlet pipe with a water inlet pump for feeding water into the stirring bin, and a sludge discharging pipe with a sludge discharging pump is further arranged for discharging sludge water in the slurry bin. The utility model adopts a muddy water unearthing mode, improves the rear unearthing efficiency of the push bench, and enables the push bench to continuously push in and quickly unearth.
Description
Technical Field
The utility model relates to a soil pressure balance push bench, in particular to a soil discharging device and a soil pressure balance push bench with the same.
Background
The earth pressure balance type pipe-jacking tunneling machine is generally adopted as a mechanical pipe jacking in domestic municipal engineering, and is widely applied to various construction working conditions aiming at the characteristics of large difference of geological conditions, different stratums of different cities, different pipeline burial depths, complex stratums and the like in China. When the pipe-jacking tunneling machine is used for tunneling, in order to keep the stability of a digging surface, a soil cabin is filled with soil with a little pressure to balance the front soil pressure. And the back of the pipeline is difficult to unearth, the unearthing efficiency is not high, and the jacking speed is directly influenced. The existing unearthing modes mainly comprise two types:
1. the traditional unearthing mode adopts a belt conveyor to horizontally convey the unearthed materials to a wellhead, and then an overground crane or a gantry crane lifts an unearthed bucket to a specified position;
2. and adding additives into the soil body discharged from the bin to ensure that the cut soil body forms flowable muck and then is pumped to the ground by a hydraulic conveying pump.
The disadvantages of the two unearthing modes are:
1. the transportation speed is slow, and the cross operations often interfere with each other;
2. the pipe jacking machine is provided with a plurality of motors, all power lines and lighting lines are arranged in the concrete pipe and the pipe jacking machine, and a certain amount of water and mud are inevitably contained in the concrete pipe;
3. the labor productivity is low;
4. unearthed equipment has high cost and low utilization rate, such as a gantry crane, a crane and the like;
5. the construction cost is high. The method mainly cannot realize continuous jacking and quick unearthing, and has slow construction progress and higher construction cost.
SUMMERY OF THE UTILITY MODEL
The present invention aims to solve the above technical problem at least to some extent. Therefore, the utility model provides a soil discharging device, and simultaneously provides a soil pressure balance push bench with the soil discharging device, which is suitable for the field of underground pipeline laying construction.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a unearthing device which the structural feature is: the device is used for unearthing of a soil pressure balance push bench, and is erected in a concrete pipe where the push bench is located through a support, and a vertical space is reserved between the bottom of the concrete pipe and the bottom end of the concrete pipe;
the main body of the soil discharging device is of a horizontal long cylindrical structure, the interior of the barrel is sequentially divided into three sections of communicated chambers by two grates, namely a coarse grate and a fine grate which are arranged at intervals along the conveying direction, the chambers are sequentially used as a stirring chamber, a settling chamber and a slurry chamber, a stirring shaft is arranged in the barrel along the central axis direction along the whole length of the barrel and is driven by a motor to rotate, a first stirring paddle and a second stirring paddle are respectively arranged on shaft sections where the stirring chamber and the slurry chamber are located, the bottom of the stirring chamber and the bottom of the settling chamber are respectively provided with a first impurity discharging hole and a second impurity discharging hole, orifices are respectively packaged by a detachable hole cover, the top of the barrel is provided with a feed inlet with a safety grate, the lower port of a slag discharging system of a pipe jacking machine is located above the stirring chamber, discharged slag falls into the stirring chamber through the feed inlet, and the upper end of the barrel at the side end where the stirring chamber is located is provided with a water inlet pipe with a water inlet pump, the mud discharging pipe is used for feeding water into the barrel, and the lower end of the side end part of the mud bin is provided with a mud discharging pipe with a mud discharging pump for discharging mud water in the mud bin.
The unearthing device of the utility model is also characterized in that:
the top of the cylinder body is open and is used as a feeding hole.
The first stirring paddle is of a double-blade structure, and two blades are arranged on the paddle rod at intervals; the second stirring paddle is of a single-blade structure, and a blade is arranged on the paddle rod.
The aperture of the grid holes of the safety grid, the aperture of the grid holes of the thick grid and the aperture of the grid holes of the thin grid are from large to small.
The aperture of the safety grating is 6cm, the aperture of the thick grating is 4cm, and the aperture of the thin grating is 2 cm.
Vertical gaps with the height of 30cm are reserved between the first impurity discharging hole and the ground and between the second impurity discharging hole and the ground.
The water inlet pipe is communicated with a circulating water tank on the ground, water is supplied by the circulating water tank, and at least one water inlet pump is arranged on the pipeline; the sludge discharge pipe is communicated with a sedimentation tank on the ground, and at least one sludge discharge pump is arranged on the pipeline; and the sedimentation tank receives and sediments the muddy water discharged by the mud discharge pipe, and the settled clean water flows into the circulating water tank through a pipeline communicated with the circulating water tank.
The mud pipe and the water inlet pipe are in a structural form of detachably connecting and assembling a plurality of seamless steel pipes.
The utility model also provides a soil pressure balance push bench which is provided with the soil discharging device and has the structural characteristics that: the soil pressure balance push bench is provided with a screw conveyor for deslagging, a sludge discharge port of the screw conveyor is suspended above the position of a stirring bin in the soil discharging device and is closely adjacent to a discharge port at the upper end of the stirring bin, and the region above the stirring bin is detachably and hermetically connected with the discharge port.
Further, a sludge discharge port of the screw conveyor is connected with a discharge port of the soil discharging device through a flange and a bolt.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model adopts a mud-water unearthing form, is matched with a soil pressure balance push bench for use, utilizes three-stage grating filtration of a safety grating, a coarse grating and a fine grating, is provided with three-chamber conversion of a stirring chamber, a settling chamber and a slurry chamber, converts the muck discharged by the soil pressure balance push bench into mud water, and can be conveyed to the outside of a working area of the push bench for treatment through a mud pipe with a mud pump, thereby improving the rear unearthing efficiency of the push bench, ensuring continuous and rapid unearthing in push construction of push bench, effectively controlling water and soil pressure balance, preventing ground from uplifting or settling, being beneficial to ensuring the construction efficiency and construction quality of the push bench, reducing the equipment cost, saving auxiliary equipment such as cranes, gantry cranes and the like, being convenient to maintain and low in cost, reducing project investment and reducing the labor intensity of construction operators.
Drawings
FIG. 1 is a schematic view of the construction of the unearthing device of the present invention;
FIG. 2 is a schematic diagram showing the position relationship between the sludge discharge port of the screw conveyer and the feed port of the soil discharging device of the soil pressure balance push bench.
In the figure, 1 a stirring bin; 2, a precipitation bin; 3, a slurry bin; 4, a stirring shaft; 5, a motor; 6, a first stirring paddle; 7 a second stirring paddle; 8, a first impurity discharging hole; 9 a second impurity discharge hole; 10 a safety grill; 11, coarse grating; 12, fine grids; 13 a water inlet pipe; 14 a sludge discharge pipe; 15 earth pressure balance push bench; 16 a screw conveyor; 17 concrete pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The soil pressure balance push bench utilizes the cutter disc to cut soil, the sealing bin behind the cutting cutter disc is filled with excavated soil, certain soil pressure is kept, auxiliary construction measures such as soil reinforcement and the like are basically not used in the construction process, no pollution is caused to the environment, the soil discharging speed and the propelling speed are adjusted according to the change of the soil pressure, the stability of a working surface is easy to achieve, the deformation to the ground surface is reduced, and the soil pressure balance push bench is widely applied to municipal construction. However, the speed of the earth pressure balance push bench is often restricted by the transportation of cut soil, and the rapid earth emergence in the earth pressure balance push cannot be realized during construction, so that the push speed is influenced.
Referring to fig. 1, the unearthing device of the embodiment is used for unearthing of a soil pressure balance push bench 15, and is erected in a concrete pipe 17 where the push bench is located through a support, and a space is vertically reserved between the bottom of the unearthing device and the bottom end of the concrete pipe 17;
the main body of the soil discharging device is of a horizontal long cylindrical structure, the interior of the barrel is divided into three sections of communicated chambers by two grates, namely a coarse grate 11 and a fine grate 12, which are arranged at intervals along the conveying direction, the chambers are sequentially used as a stirring chamber 1, a settling chamber 2 and a slurry chamber 3, a stirring shaft 4 is arranged along the full length of the barrel along the central axis direction in the barrel, the stirring shaft 4 is driven by a motor 5 to rotate, a first stirring paddle 6 and a second stirring paddle 7 are respectively arranged at the shaft sections corresponding to the stirring chamber 1 and the slurry chamber 3, a first impurity discharging hole 8 and a second impurity discharging hole 9 are respectively arranged at the bottom of the stirring chamber 1 and the settling chamber 2, orifices are respectively encapsulated by a detachable hole cover, a feed inlet with a safety grate 10 is arranged at the top of the barrel, the lower port of a slag discharging system of a pipe jacking machine is positioned above the stirring chamber 1, discharged slag soil falls into the stirring chamber 1 through the feed inlet, a water inlet pipe 13 with a water inlet pump is arranged at the upper end part of the stirring chamber 1, the mud discharging pipe 14 with a mud discharging pump is arranged at the lower end of the end part of the mud bin 3 where the mud is positioned and is used for discharging mud water in the mud bin 3.
In specific implementation, the corresponding structural arrangement also includes:
the top of the cylinder body is open and is used as a feeding hole, a safety grid 10 is laid, and primary impurity removal is carried out on the dregs.
The first stirring paddle 6 is of a double-blade structure, and two blades are arranged on the paddle rod at intervals; the second stirring paddle 7 is of a single-blade structure, and a blade is arranged on the paddle rod.
The aperture of the grid holes of the safety grid 10, the aperture of the grid holes of the thick grid 11 and the aperture of the grid holes of the thin grid 12 are from large to small.
The aperture of the safety grid 10 is 6cm, the aperture of the thick grid 11 is 4cm, and the aperture of the thin grid 12 is 2 cm.
Vertical gaps with the height of 30cm are reserved between the first impurity discharging holes 8 and the ground and between the second impurity discharging holes 9 and the ground.
During construction, a sedimentation tank and a circulating water tank can be arranged on the ground, a water inlet pipe 13 is communicated with the circulating water tank on the ground, water is supplied by the circulating water tank, and at least one water inlet pump is arranged on a pipeline; the sludge discharge pipe 14 is communicated with a sedimentation tank on the ground, and at least one sludge discharge pump is arranged on the pipeline; the muddy water discharged through the mud pipe 14 is received and precipitated by the sedimentation tank, and the precipitated clean water flows into the circulating water tank through a pipeline communicated with the circulating water tank.
The sludge discharge pipe 14 and the water inlet pipe 13 are both in a structural form of detachably connecting and assembling a plurality of seamless steel pipes.
The working principle is as follows:
the cutter head of the earth pressure balance push bench 15 cuts the full section of the front soil body, the cut soil body is discharged into the unearthed device through a slag discharging system, large-particle impurities contained in the slag soil are sequentially filtered through the safety grating 10, the coarse grating 11 and the fine grating 12, particles with different particle diameters after filtering are respectively retained in the safety grating 10, the stirring bin 1 and the settling bin 2, the impurities on the safety grating 10 are manually removed, the retained impurities in the stirring bin 1 and the settling bin 2 are cleaned as required, the particles can be synchronously cleaned through impurity removing holes when a pipeline is installed on a push bench, attention is paid to the attention, the power supply of the unearthed device is firstly cut off when the particles are cleaned, then the impurity removing holes at the bottoms of the stirring bin 1 and the settling bin 2 are respectively opened, and the particles are transported out of the ground after being discharged. The unearthing device is through pouring into water into stirring storehouse 1, stirs the dregs of a river that receives in stirring storehouse 1 once, and the mud after the stirring flows into in deposiing storehouse 2 through thick grid 11 filtration, deposits in deposiing storehouse 2, and in the mud storehouse 3 is flowed into in the filtration of thin grid 12 again, carries out the secondary stirring in mud storehouse 3, finally forms mud, discharges to ground through mud pipe 14. The unearthing device of this embodiment cooperates with 15 combinations of soil pressure balance push bench to realize carrying the soil body and sealing the operation, can realize unearthing fast, makes the push bench can realize pushing in succession, has reduced operation personnel's intensity of labour, has practiced thrift construction cost, has guaranteed construction period, has improved intraductal operation environment, and in addition, unearthing device water can cyclic utilization, has practiced thrift the water resource.
The unearthing device of this embodiment is safe and reliable, environmental protection, can avoid the workman and walk the potential safety hazard that exists along the push pipe, liberate the labour, has improved work efficiency, and former unearthing mode is minimum 10 people per shift, and only need 1 people per shift after using this unearthing device, improved work efficiency 100% -150%, practiced thrift 30% -40% energy, the energy saving.
Referring to fig. 2, the present embodiment also provides a soil pressure balance push bench 15, which is provided with the above-mentioned unearthing device, and has the structural features that: the earth pressure balance push bench 15 is provided with a spiral conveyor 16 for deslagging, a sludge discharge port of the spiral conveyor 16 extends above the position of the stirring bin 1 in the earth discharging device in a hanging manner, is close to a discharge port at the upper end of the stirring bin 1, and is detachably connected with the discharge port in a sealing manner above the region where the stirring bin 1 is located.
Optionally, the sludge discharge port of the screw conveyor 16 is connected with the discharge port of the soil discharging device by a flange through a bolt.
The embodiment is applied to a project of pollution control engineering of primary rain at a key discharge outlet in the river region of Nan\28125Hebei province of Hefei city in Anhui province. The engineering standard section 20# to 19# passes through a copper-tomb road bridge phi 3000mm pipeline, the length is 261m, according to the requirements of an actual construction process, the pipeline is constructed by adopting an earth pressure balance push bench 15, a push bench working well and a receiving well both adopt reinforced concrete open caisson, when the 20# working well is used for carrying out phi 3000mm pipeline jacking construction, the unearthing device of the embodiment is applied, the unearthing device is connected with a mud discharge port of a spiral conveyor 16 of the earth pressure balance push bench 15, the unearthing device advances along with the push bench head together, the cut muck is conveyed to a stirring bin 1, injected water is quickly converted into slurry, then the slurry is filtered to a settling bin 2, and the slurry is conveyed to a slurry bin 3 after settling. During construction, the average jacking speed of the soil pressure balance push bench 15 is 14-18 m/day, and the working efficiency is greatly improved.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A unearthing device is characterized in that: the device is used for unearthing of a soil pressure balance push bench, and is erected in a concrete pipe where the push bench is located through a support, and a vertical space is reserved between the bottom of the concrete pipe and the bottom end of the concrete pipe;
the main body of the soil discharging device is of a horizontal long cylindrical structure, the interior of the barrel is sequentially divided into three sections of communicated chambers by two grates, namely a coarse grate and a fine grate which are arranged at intervals along the conveying direction, the chambers are sequentially used as a stirring chamber, a settling chamber and a slurry chamber, a stirring shaft is arranged in the barrel along the central axis direction along the whole length of the barrel and is driven by a motor to rotate, a first stirring paddle and a second stirring paddle are respectively arranged on shaft sections where the stirring chamber and the slurry chamber are located, the bottom of the stirring chamber and the bottom of the settling chamber are respectively provided with a first impurity discharging hole and a second impurity discharging hole, orifices are respectively packaged by a detachable hole cover, the top of the barrel is provided with a feed inlet with a safety grate, the lower port of a slag discharging system of a pipe jacking machine is located above the stirring chamber, discharged slag falls into the stirring chamber through the feed inlet, and the upper end of the barrel at the side end where the stirring chamber is located is provided with a water inlet pipe with a water inlet pump, the mud discharging pipe is used for feeding water into the barrel, and the lower end of the side end part of the mud bin is provided with a mud discharging pipe with a mud discharging pump for discharging mud water in the mud bin.
2. The unearthing device of claim 1, wherein: the top of the cylinder body is open and is used as a feeding hole.
3. The unearthing device of claim 1, wherein: the first stirring paddle is of a double-blade structure, and two blades are arranged on the paddle rod at intervals; the second stirring paddle is of a single-blade structure, and a blade is arranged on the paddle rod.
4. The unearthing device of claim 1, wherein: the aperture of the grid holes of the safety grid, the aperture of the grid holes of the thick grid and the aperture of the grid holes of the thin grid are from large to small.
5. The unearthing device of claim 1 or 4, characterized in that: the aperture of the safety grating is 6cm, the aperture of the thick grating is 4cm, and the aperture of the thin grating is 2 cm.
6. The unearthing device of claim 1, wherein: vertical gaps with the height of 30cm are reserved between the first impurity discharging hole and the ground and between the second impurity discharging hole and the ground.
7. The unearthing device of claim 1, wherein: the water inlet pipe is communicated with a circulating water tank on the ground, water is supplied by the circulating water tank, and at least one water inlet pump is arranged on the pipeline; the sludge discharge pipe is communicated with a sedimentation tank on the ground, and at least one sludge discharge pump is arranged on the pipeline; and the sedimentation tank receives and sediments the muddy water discharged by the mud discharge pipe, and the settled clean water flows into the circulating water tank through a pipeline communicated with the circulating water tank.
8. The unearthing device of claim 1 or 7, wherein: the mud pipe and the water inlet pipe are in a structural form of detachably connecting and assembling a plurality of seamless steel pipes.
9. A soil pressure balance push bench provided with the unearthing device of any one of claims 1 to 8, characterized in that: the soil pressure balance push bench is provided with a screw conveyor for deslagging, a sludge discharge port of the screw conveyor is suspended above the position of a stirring bin in the soil discharging device and is closely adjacent to a discharge port at the upper end of the stirring bin, and the region above the stirring bin is detachably and hermetically connected with the discharge port.
10. The earth pressure balance push bench of claim 9, wherein: the mud discharging port of the screw conveyer is connected with the discharge port of the unearthing device through a flange and a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122646136.8U CN215949487U (en) | 2021-11-01 | 2021-11-01 | Unearthing device and earth pressure balance push bench with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122646136.8U CN215949487U (en) | 2021-11-01 | 2021-11-01 | Unearthing device and earth pressure balance push bench with same |
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| Publication Number | Publication Date |
|---|---|
| CN215949487U true CN215949487U (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122646136.8U Active CN215949487U (en) | 2021-11-01 | 2021-11-01 | Unearthing device and earth pressure balance push bench with same |
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| CN (1) | CN215949487U (en) |
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2021
- 2021-11-01 CN CN202122646136.8U patent/CN215949487U/en active Active
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