Composite grading crushing pipe jacking machine

Abstract

The present invention relates to a composite graded crushing pipe jacking machine. The composite graded crushing pipe jacking machine comprises a soil bin cylinder, a cutter disc, a driving assembly, an inner crushing cone and an outer crushing cone. The cutter disc is arranged at the front end of the soil bin cylinder, and a plurality of mud inlet openings are provided on the cutter disc. The driving assembly comprises a driving member and a main shaft connected to the driving member, and the main shaft is passed through the cutter disc. A center knife is provided at the end of the main shaft. The inner crushing cone is arranged in the soil bin cylinder and fixed on the main shaft. The composite pipe jacking machine can easily control the particle size of pebbles and gravels within the dischargeable range, and has a powerful stirring function. It has a higher construction efficiency for pebbles and gravels, and is not easy to cause the mud discharge port of the machine to be blocked or the ground to bulge due to poor mud discharge for silty clay.

Description

Technical Field

[0001] The invention relates to a composite graded crushing pipe jacking machine. Background Art

[0002] The pipe jacking machine is a machine that uses the thrust of an external oil cylinder to enter the working soil layer to perform excavation operations. It is generally cylindrical. Generally, when the gravel content in the construction geological conditions exceeds 25% of the excavation surface, the existing rock pipe jacking machine can only be used for construction, which is more expensive and has a lower construction efficiency; and for general geological conditions, especially silty clay layers, due to the large opening rate and the defects of the mixing function in the soil bin of the equipment, the accumulation and precipitation of the cutting medium in the machine bin gradually increase, and the cutting resistance of the equipment is increased accordingly, until the machine is damaged or the excavation line is uplifted due to pressure imbalance. Summary of the invention

[0003] Based on this, it is necessary to provide a composite grading crushing pipe jacking machine that can easily control the particle size of gravel within the dischargeable range and has a powerful stirring function (it has a higher construction efficiency for gravel soil and is not easy to cause the machine's mud discharge system to be blocked or the ground to bulge for silty clay).

[0004] A composite graded crushing pipe jacking machine, comprising a central knife, a knife disc, a soil bin cylinder, an inner crushing cone, an outer crushing cone, a full bin dovetail stirring assembly, a driving assembly, a deviation correction system, a mud inlet and outlet system, a tail bin sealing system and a water injection system, wherein the knife disc is arranged at the front end of the soil bin cylinder, a plurality of mud inlet openings are provided on the knife disc, the driving assembly comprises a driving member and a main shaft connected to the driving member, the main shaft is passed through the knife disc, the central knife is arranged at the end of the main shaft, the inner crushing cone is arranged The outer crushing cone is arranged in the soil bin cylinder and wrapped around the outer periphery of the inner crushing cone, an annular crushing channel is formed between the inner crushing cone and the outer crushing cone, and the multiple mud inlet openings are connected with the annular crushing channel. The inner crushing cone and the outer crushing cone are provided with multiple rolling blades, and each of the rolling blades is sequentially protruding with at least two stages of rolling blades along its own length direction. The full-bin dovetail stirring assembly is linked with the main shaft.

[0005] In one embodiment, the inner crushing cone and the outer crushing cone are both conical, the outer diameter of the inner crushing cone gradually increases in the direction away from the cutter disc, and the inner diameter of the outer crushing cone gradually decreases in the direction away from the cutter disc.

[0006] In one embodiment, the inner crushing cone is eccentrically arranged relative to the outer crushing cone, and the rolling blades on the inner crushing cone are arranged opposite to the rolling blades on the outer crushing cone.

[0007] In one embodiment, the plurality of mud inlet openings are arranged around the center of the cutter head to form a circle for introducing gravel, mud and sand.

[0008] In one embodiment, the at least two levels of rolling knives include a first-level eccentric rolling knife, a second-level eccentric rolling knife, a third-level eccentric rolling knife and a finishing rolling knife which are sequentially arranged in a direction away from the knife disc.

[0009] In one embodiment, a stirring chamber is further included, and the stirring chamber is connected to an end of the annular crushing channel away from the cutter disc.

[0010] In one embodiment, the mixing bin is disposed at the rear end of the soil bin cylinder, and the full bin dovetail type mixing assembly is disposed in the mixing bin.

[0011] In one embodiment, the main shaft is connected to the driving member via a speed reducer, and the full-bin dovetail stirring assembly is connected to the main shaft via the tail end of the inner crushing cone.

[0012] In one embodiment, each of the rolling blades extends along the generatrix of the inner crushing cone / the outer crushing cone, the fine rolling blade extends in a direction parallel to the central axis of the soil bin cylinder, an eccentric gap is formed at the minimum distance between the outer crushing cone and the inner crushing cone, and when the cutter disc drives the inner crushing cone to rotate around the central axis of the soil bin cylinder for one circle, the eccentric gap rotates around the central axis of the soil bin cylinder for at least 2 circles.

[0013] In one embodiment, the distance between the first-stage eccentric rolling knife on the inner crushing cone cylinder and the corresponding first-stage eccentric rolling knife on the outer crushing cone cylinder is defined as the first crushing distance, the distance between the second-stage eccentric rolling knife on the inner crushing cone cylinder and the corresponding second-stage eccentric rolling knife on the outer crushing cone cylinder is defined as the second crushing distance, the distance between the third-stage eccentric rolling knife on the inner crushing cone cylinder and the corresponding third-stage eccentric rolling knife on the outer crushing cone cylinder is defined as the third crushing distance, the distance between the fine rolling knife on the inner crushing cone cylinder and the corresponding fine rolling knife on the outer crushing cone cylinder is defined as the fourth crushing distance, and the first crushing distance, the second crushing distance, the third crushing distance and the fourth crushing distance gradually decrease.

[0014] When the composite graded crushing pipe jacking machine is in use, the cutter disc rotates and uses the central cutter to cut soil or stir gravel, so that soil or gravel enters the soil bin cylinder through the multiple mud inlet openings, and the construction efficiency for gravel soil is relatively high. The main shaft drives the inner crushing cone to rotate relative to the outer crushing cone to carry out crushing operations. Since the inner crushing cone and the outer crushing cone are both provided with a plurality of rolling blades, each of the rolling blades is sequentially provided with at least two stages of rolling blades along its length direction, and the soil or pebbles and gravels can be rolled and crushed step by step by the at least two stages of rolling blades in sequence, so that the pebbles and gravels are fully crushed, and the particle size of the pebbles and gravels can be easily controlled within the dischargeable range, and the fine crushing area can also control the particle size of the pebbles and gravels and the amount of medium discharged from the soil, and subsequently a full-bin mixing operation is performed, so that the medium in the mixing area is fully integrated with the injected lubricating slurry, thereby reducing the resistance of the mud inlet and discharge system, so that the medium in the soil bin cannot be precipitated, the mud inlet and discharge system of the machine is not easily blocked and damaged, and the excavation line will not cause bulges due to pressure imbalance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a cross-sectional schematic diagram of a composite graded crushing pipe jacking machine according to an embodiment.

[0016] Figure 2 for Figure 1 A partial enlarged view of point A in the middle. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention 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 invention more thoroughly understood.

[0018] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0020] The present invention relates to a composite graded crushing pipe jacking machine. For example, the composite graded crushing pipe jacking machine includes a center knife, a knife disc, a soil bin cylinder, an inner crushing cone, an outer crushing cone, a full-bin stirring type stirring assembly, a driving assembly, a deviation correction system, a mud inlet and outlet system, a tail bin sealing system, and a water injection system. For example, the driving assembly includes a driving member and a main shaft connected to the driving member, the main shaft is inserted into the knife disc, and a center knife is arranged at the end of the main shaft, and the inner crushing cone is arranged in the soil bin cylinder and fixed on the main shaft. For example, the outer crushing cone is arranged in the soil bin cylinder and wrapped around the outer periphery of the inner crushing cone, and an annular crushing channel is formed between the inner crushing cone and the outer crushing cone. For example, the multiple mud inlet openings are all connected to the annular crushing channel, and the inner crushing cone and the outer crushing cone are both provided with multiple rolling knife strips, and each of the rolling knife strips is sequentially provided with at least two levels of rolling knives along its own length direction. The full-bin dovetail stirring assembly is linked to the main shaft 32 .

[0021] See also Figure 1 and Figure 2 A composite graded crushing pipe jacking machine includes a center knife 325, a soil bin body 10, a cutter disc 20, an inner crushing cone 40, an outer crushing cone 50, a full bin dovetail mixing assembly, a driving assembly 30, a deviation correction system, a mud inlet and outlet system, a tail bin sealing system and a water injection system. The cutter disc 20 is arranged at the front end of the soil bin body 10, and a plurality of mud inlet openings are opened on the cutter disc 20. The driving assembly 30 includes a driving member 31 and a main shaft 32 connected to the driving member 31. The main shaft 32 is penetrated in the cutter disc 20, and the center knife 325 is arranged at the main shaft 32. At the end of the shaft 32, the inner crushing cone 40 is arranged in the crushing soil bin cylinder 10 and fixed on the main shaft 32, the outer crushing cone 50 is arranged in the crushing soil bin cylinder 10 and surrounds the outer periphery of the inner crushing cone 40, an annular crushing channel 45 is formed between the inner crushing cone 40 and the outer crushing cone 50, and multiple mud inlet openings are connected to the annular crushing channel 45, and multiple rolling blades 48 are arranged on the inner crushing cone 40 and the outer crushing cone 50, and each rolling blade 48 is sequentially protruded with at least two stages of rolling blades along its length direction. The full-bin dovetail stirring assembly is linked with the main shaft 32.

[0022] When the composite graded crushing pipe jacking machine is in use, the cutter disc 20 rotates and uses the center cutter 325 to cut the soil or stir the gravel, so that the soil or gravel enters the crushing soil bin cylinder 10 through multiple mud inlet openings, and the construction efficiency for gravel soil is relatively high. The main shaft 32 drives the inner crushing cone 40 to rotate relative to the outer crushing cone 50 to start the crushing operation. Since multiple rolling blades 48 are provided on the inner crushing cone 40 and the outer crushing cone 50, each rolling blade 48 is sequentially provided with at least two levels of rolling blades along its length direction, and then the soil or gravel can be rolled and crushed step by step by at least two levels of rolling blades, so that the gravel is fully crushed, the particle size of the gravel can be easily controlled within the dischargeable range, and the amount of medium discharged from the soil can also be controlled. Moreover, the fine crushing area can also control the amount of medium discharged from the soil, and subsequently carry out full-bin mixing operations to fully integrate the medium in the mixing area with the injected lubricating slurry, reducing the resistance of the mud inlet and discharge system, making it impossible for the medium in the soil bin to settle, and the machine mud inlet and discharge system is not easily blocked and damaged, and there will be no uplift along the excavation line due to pressure imbalance.

[0023] For example, the plurality of mud inlet openings are large openings in the common sense of the art, and the opening diameter of the plurality of mud inlet openings is 35% of the diameter of the pipe jacking machine. The cutter head with a large opening can improve the construction efficiency of the pipe jacking machine for gravel.

[0024] For example, in order to improve the crushing effect, the inner crushing cone 40 and the outer crushing cone 50 are both conical, the outer diameter of the inner crushing cone 40 gradually increases in the direction away from the cutter disc 20, and the inner diameter of the outer crushing cone 50 gradually decreases in the direction away from the cutter disc 20. The inner crushing cone 40 is eccentrically arranged relative to the outer crushing cone 50, and the rolling blade 48 on the inner crushing cone 40 and the rolling blade 48 on the outer crushing cone 50 are arranged opposite to each other. A plurality of mud inlet openings are arranged around the center of the cutter disc 20 and form a circle around it for introducing pebbles, mud and sand. At least two stages of rolling blades include a first-stage eccentric rolling blade 481, a second-stage eccentric rolling blade 482, a third-stage eccentric rolling blade 483 and a fine rolling blade 484 arranged in sequence in the direction away from the cutter disc 20. By eccentrically arranging the inner crushing cone 40 relative to the outer crushing cone 50, the size of the annular crushing channel 45 can be changed after the inner crushing cone 40 rotates, thereby improving the crushing effect. The arrangement of the first-stage eccentric rolling knife 481, the second-stage eccentric rolling knife 482, the third-stage eccentric rolling knife 483 and the fine rolling knife 484 enables the soil or gravel to be crushed and compacted in multiple layers and levels, thereby providing a crushing effect and ensuring that all media entering the mixing chamber 60 can be fused with the bentonite slurry entering at the rear end to form a medium with plasticity and fluidity, and discharged through the bypass valve, thereby achieving the purpose of one machine with multiple uses and realizing a composite function.

[0025] For example, in order to facilitate the mud discharge effect, the composite graded crushing pipe jacking machine also includes a mixing chamber 60, which is connected to the end of the annular crushing channel 45 away from the cutter disc 20. The mixing chamber 60 is arranged at the rear end of the crushing soil chamber cylinder 10, and the mixing chamber 60 is provided with the full-chamber dovetail type mixing assembly. The main shaft 32 is connected to the driving member 31 through the reducer 328, and the full-chamber dovetail type mixing assembly is connected to the main shaft 32 through the rear end of the inner crushing cone. That is, the mixing chamber 60 is a rear-mounted mixing chamber with a full-chamber dovetail type stirring rod, which rotates at a uniform speed with the inner crushing cone 40, and stirs the whole chamber surface 360 ​​degrees, completely solving the problems of the deposition of gravel particles, the accumulation of silty clay at the mud discharge port or in the chamber due to poor mud discharge, and the road surface bulging caused by excessive pressure on the front excavation surface.

[0026] For example, each rolling blade 48 extends along the generatrix of the inner crushing cone 40 / outer crushing cone 50, and the fine rolling blade 484 extends in a direction parallel to the central axis of the crushed soil bin cylinder 10. Due to different machine diameters, an eccentric gap is formed at the minimum distance between the outer crushing cone 50 and the inner crushing cone 40. When the cutter head 20 drives the inner crushing cone 40 to rotate around the central axis of the soil bin cylinder 10 for one circle, the eccentric gap rotates around the central axis of the soil bin cylinder 10 for at least 2 circles. The distance between the first-stage eccentric rolling knife 481 on the inner crushing cone 40 and the corresponding first-stage eccentric rolling knife 481 on the outer crushing cone 50 is defined as the first crushing distance, the distance between the second-stage eccentric rolling knife 482 on the inner crushing cone 40 and the corresponding second-stage eccentric rolling knife 482 on the outer crushing cone 50 is defined as the second crushing distance, the distance between the third-stage eccentric rolling knife 483 on the inner crushing cone 40 and the corresponding third-stage eccentric rolling knife 483 on the outer crushing cone 50 is defined as the third crushing distance, and the distance between the fine rolling knife 484 on the inner crushing cone 40 and the corresponding fine rolling knife 484 on the outer crushing cone 50 is defined as the fourth crushing distance. The first crushing distance, the second crushing distance, the third crushing distance and the fourth crushing distance are gradually reduced. By gradually reducing the first crushing distance, the second crushing distance, the third crushing distance and the fourth crushing distance, multi-stage crushing of mud, sand and gravel is achieved. As the jacking force pushes forward the thrust of the tunneling jacking operation, the soil pressure in the annular crushing channel 45 will increase, forcing various media in the soil bin cylinder 10 to enter the mixing bin 60 through the annular channel 4845 around the fine rolling knife 484. Here, under gravel geological conditions, the annular channel 4845 around the fine rolling knife 484 plays a role in ensuring that the particle size of all passing objects is within the dischargeable range; under mud and sand geological conditions, it plays a role in controlling the amount of medium in the mixing bin 60, thereby ensuring that all media entering the mixing bin 60 can be fused with the bentonite slurry entering at the rear end to form a medium with plasticity and fluidity, and discharged through the bypass valve, thereby achieving the purpose of one machine with multiple uses and realizing composite functions.

[0027] For example, the composite graded crushing pipe jacking machine further includes a connecting shell 71, a rear cylinder 72, a deviation correction oil cylinder 73, an electrical box 74 and a tail bin door 75. The rear cylinder 72 is connected to the rear end of the crushing soil bin cylinder 10 through the connecting shell 71, the deviation correction oil cylinder 73 and the electrical box 74 are both arranged in the rear cylinder 72, and the tail bin door 75 is arranged at the rear end of the rear cylinder 72 for discharging mud. A plurality of rows of cutters 28 are arranged on the cutter head 20.

[0028] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0029] The above-mentioned embodiments only express several embodiments of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A composite graded crushing pipe jacking machine, characterized in that: The invention comprises a central knife, a knife disc, a soil bin cylinder, an inner crushing cone cylinder, an outer crushing cone cylinder, a full-bin dovetail type stirring assembly, a driving assembly, a deviation correction system, a mud inlet and outlet system, a tail bin sealing system and a water injection system, wherein the knife disc is arranged at the front end of the soil bin cylinder, the knife disc is provided with a plurality of mud inlet openings, the driving assembly comprises a driving member and a main shaft connected to the driving member, the main shaft is passed through the knife disc, the central knife is arranged at the end of the main shaft, the inner crushing cone cylinder is arranged in the soil bin cylinder and fixed on the main shaft, the outer crushing cone cylinder is arranged in the soil bin cylinder and wrapped around the periphery of the inner crushing cone cylinder, an annular crushing channel is formed between the inner crushing cone cylinder and the outer crushing cone cylinder, the plurality of mud inlet openings are all connected with the annular crushing channel, the inner crushing cone cylinder and the outer crushing cone cylinder are both provided with a plurality of rolling blades, each of the rolling blades is sequentially provided with at least two stages of rolling blades along its own length direction, and the full-bin dovetail type stirring assembly is linked with the main shaft; The inner crushing cone and the outer crushing cone are both in the shape of cones, the outer diameter of the inner crushing cone gradually increases in the direction away from the cutter disc, and the inner diameter of the outer crushing cone gradually decreases in the direction away from the cutter disc; The inner crushing cone is eccentrically arranged relative to the outer crushing cone, and the rolling blades on the inner crushing cone are arranged facing the rolling blades on the outer crushing cone; The at least two levels of rolling knives include a first-level eccentric rolling knife, a second-level eccentric rolling knife, a third-level eccentric rolling knife and a fine rolling knife which are sequentially arranged in a direction away from the knife disc; Each of the rolling blades extends along the generatrix of the inner crushing cone cylinder / the outer crushing cone cylinder, the fine rolling blade extends in a direction parallel to the central axis of the soil bin cylinder, an eccentric gap is formed at the minimum distance between the outer crushing cone cylinder and the inner crushing cone cylinder, and when the cutter disc drives the inner crushing cone cylinder to rotate around the central axis of the soil bin cylinder for one circle, the eccentric gap rotates around the central axis of the soil bin cylinder for at least 2 circles; The distance between the first-stage eccentric rolling knife on the inner crushing cone and the corresponding first-stage eccentric rolling knife on the outer crushing cone is defined as the first crushing distance, the distance between the second-stage eccentric rolling knife on the inner crushing cone and the corresponding second-stage eccentric rolling knife on the outer crushing cone is defined as the second crushing distance, the distance between the third-stage eccentric rolling knife on the inner crushing cone and the corresponding third-stage eccentric rolling knife on the outer crushing cone is defined as the third crushing distance, the distance between the fine rolling knife on the inner crushing cone and the corresponding fine rolling knife on the outer crushing cone is defined as the fourth crushing distance, and the first crushing distance, the second crushing distance, the third crushing distance and the fourth crushing distance gradually decrease.

2. The composite graded crushing pipe jacking machine according to claim 1, characterized in that: The plurality of mud inlet openings are arranged around the center of the cutter disc and form a circle therearound for introducing pebbles, mud and sand.

3. The composite graded crushing pipe jacking machine according to claim 1 is characterized in that: It also includes a stirring chamber, which is connected to an end of the annular crushing channel away from the cutter disc.

4. The composite graded crushing pipe jacking machine according to claim 3 is characterized in that: The mixing bin is arranged at the rear end of the soil bin cylinder, and the full bin dovetail type mixing assembly is arranged in the mixing bin.

5. The composite graded crushing pipe jacking machine according to claim 4 is characterized in that: The main shaft is connected to the driving member through a speed reducer, and the full-bin dovetail stirring assembly is connected to the main shaft through the tail end of the inner crushing cone.

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