Auxiliary soil removal devices and jacking equipment for pipe jacking machines.

Abstract

This invention discloses an auxiliary soil removal device and jacking equipment for a pipe jacking machine. The auxiliary soil removal device has a shell with an inlet connected to the soil removal pipe of the pipe jacking machine. It also includes a soil-rock separation component for separating pebbles and soil from the excavated rock and soil, comprising: a cylinder with its inlet end connected to the inlet and a first through hole for soil passage; a spiral conveyor plate located inside the cylinder; a stone discharge port located on the shell and connected to the outlet end of the cylinder; and a first drive mechanism for driving the cylinder to rotate, including a first motor. In this invention, by setting up a soil-rock separation component that can separate pebbles and soil, the pebbles and soil are discharged separately, achieving efficient utilization of the pebbles. Simultaneously, the soil-rock separation component has a simple structure, high working efficiency, and is less prone to damage from collisions with pebbles.

Description

Technical Field

[0001] This invention relates to the technical field of tunnel construction, particularly to the technical field of tunnel construction in gravel and sand strata, and specifically to an auxiliary soil removal device and jacking equipment for pipe jacking machines. Background Technology

[0002] Pipe jacking is a common construction method for large-section tunnel excavation. It can use miniaturized equipment to build large tunnels with complex cross sections. In essence, it involves installing steel pipes with high rigidity on the hidden arc of the lining arch of the underground tunnel or structural engineering to play a temporary advanced support role, preventing soil collapse and surface subsidence, so as to ensure the safe operation of excavation and subsequent support processes.

[0003] When a pipe jacking machine removes excavated soil, it uses its internal auger drill rod to output the excavated soil and rock, which is then piled up on a loading platform below the machine. Manual assistance is then required to move the excavated soil and rock. When the pipe jacking machine operates in medium- to long-distance tunnels, the amount of excavated soil is substantial, and the need for manual assistance in moving the soil and rock results in low production efficiency and poses safety hazards.

[0004] Chinese invention patent CN107989631A discloses a soil removal device for a pipe jacking machine. While this device can improve soil removal efficiency to some extent, it is not suitable for sandy and gravelly strata. This is because sandy and gravelly strata are characterized by large, high-content, and hard gravel particles. When pipe jacking is carried out in sandy and gravelly strata, the gravel in the excavated soil will collide with components such as the mixing shaft and mixing box in the soil removal device, easily leading to damage or even failure of the device, resulting in a decrease in the quality and efficiency of soil removal from the pipe jacking. Furthermore, the gravel and muddy water are mixed and discharged outside the soil removal device, requiring secondary separation for the gravel resources to be recycled. Summary of the Invention

[0005] The main objective of this invention is to provide an auxiliary soil removal device and jacking equipment for pipe jacking machines, so as to solve the technical problems of easy damage and difficulty in recycling pebbles in existing pipe jacking machine soil removal devices.

[0006] Firstly, in order to achieve the above objectives, the present invention provides an auxiliary soil removal device for a pipe jacking machine, the technical solution of which is as follows:

[0007] An auxiliary soil removal device for a pipe jacking machine includes a housing with an inlet connected to the soil removal pipe of the pipe jacking machine. It also includes a soil-rock separation component for separating pebbles and soil from the excavated rock and soil. The soil-rock separation component includes: a cylinder connected to the inlet at its inlet end, with a first through hole for soil to pass through; a spiral conveyor plate located inside the cylinder; a stone discharge port located on the housing and connected to the outlet end of the cylinder; and a first drive mechanism for driving the cylinder to rotate, including a first motor.

[0008] In this invention, a soil-rock separation component is provided that can separate pebbles and soil, so that pebbles and soil are discharged separately, achieving efficient utilization of pebbles; at the same time, the soil-rock separation component has a simple structure, high working efficiency, and is not easily damaged by collisions with pebbles.

[0009] As a further improvement of the present invention: the cylinder includes: a first support ring disposed at the inlet end of the cylinder; a second support ring disposed at the outlet end of the cylinder; and rods connecting the first and second support rings, the rods being arranged at intervals between the first and second support rings, with the first through hole formed between adjacent rods. Thus, the cylinder has a simple structure and good separation effect.

[0010] As a further improvement of the present invention: the first driving mechanism includes: a drive wheel connected to a first motor; a first rotating wheel whose shaft is connected to the housing and which cooperates with a first support ring; a second rotating wheel whose shaft is connected to the housing and which cooperates with a second support ring; and a rotating belt for driving either the first or second rotating wheel to rotate with the drive wheel. Therefore, the first driving mechanism has a simple structure and enables the cylinder to rotate stably.

[0011] As a further improvement of the present invention, the cylinder further includes a reinforcing ring disposed between the first support ring and the second support ring; thereby, the strength of the cylinder is significantly improved.

[0012] As a further improvement of the present invention: the first driving mechanism further includes a third rotating wheel, the shaft of the third rotating wheel is connected to the housing, and the third rotating wheel is disposed between the first rotating wheel or the second rotating wheel and the driving wheel; thereby, the transmission is more stable.

[0013] As a further improvement of the present invention: the first motor and the drive wheel are disposed outside the housing, and the housing is provided with a second through hole for the rotating belt to pass through; thereby, the life of the first motor is significantly extended.

[0014] As a further improvement of the present invention: there are two of each of the first and second rotating wheels, which are arranged symmetrically; thereby, the force on the cylinder is uniform and the rotation is more stable.

[0015] As a further improvement of the present invention, the auxiliary soil removal device also includes a water spraying assembly, which includes a nozzle disposed above the cylinder. Thus, by spraying water, firstly, the mud and water adhering to the pebbles can be washed away, improving the quality of the pebbles; secondly, some large-sized soil particles can be broken up, improving the separation effect; and thirdly, soil can be prevented from adhering to the cylinder.

[0016] As a further improvement of the present invention: the nozzles are arranged at intervals above the cylinder; thereby, the water flow enters the cylinder evenly, improving the performance; the water spray assembly also includes a water tank connected to the housing; thereby, it is more convenient to use.

[0017] As a further improvement of the present invention, the auxiliary soil removal device also includes a stirring assembly located below the cylinder. The stirring assembly includes stirring blades and a second driving mechanism for driving the stirring blades to rotate. The second driving mechanism includes a second motor. Thus, by stirring the mud and water, the soil can be further broken up, and a mud-water mixture can be formed, facilitating the rapid and efficient discharge of the soil and preventing blockage of the mud discharge pipe.

[0018] As a further improvement of the present invention, the second driving mechanism further includes a support shaft arranged along the axial direction of the cylinder, and the stirring blades are arranged at intervals on the support shaft. This improves the stirring effect.

[0019] As a further improvement of the present invention, the mixing assembly also includes a sludge discharge port on the shell, and a filter screen is provided on the sludge discharge port. This intercepts larger pieces of mud, extending the residence time and improving the crushing effect, while also preventing blockage of the sludge discharge pipe.

[0020] Secondly, in order to achieve the above objectives, the present invention provides a jacking device for tunnel construction in gravel strata, the technical solution of which is as follows:

[0021] Jacking equipment used for tunnel construction in gravel strata includes pipe jacking machines and the aforementioned auxiliary soil removal devices.

[0022] It is evident that the auxiliary soil removal device and jacking equipment for pipe jacking machines of the present invention have a simple structure, low cost, convenient use and long service life. It effectively solves the technical problems of easy damage and difficulty in recycling pebbles in existing pipe jacking machine soil removal devices, significantly improves soil removal quality and efficiency, and is especially suitable for underground tunnel construction in sand and gravel strata, with strong practicality.

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The accompanying drawings, which form part of this invention, are used to aid in understanding the invention. The content provided in the drawings and their related descriptions can be used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0025] Figure 1 This is a perspective view of one embodiment of the auxiliary soil removal device for a pipe jacking machine according to the present invention.

[0026] Figure 2 This is a perspective view of another embodiment of the auxiliary soil removal device for a pipe jacking machine according to the present invention.

[0027] Figure 3 This is a cross-sectional view of an embodiment of the auxiliary soil removal device for a pipe jacking machine according to the present invention.

[0028] Figure 4 This is a schematic diagram of the structure of the first drive mechanism in an embodiment of the auxiliary soil removal device for a pipe jacking machine of the present invention.

[0029] The relevant markings in the above figures are:

[0030] 100-Shell, 110-Feed inlet, 210-Cylinder, 220-Spiral conveyor plate, 230-Stone discharge port, 211-First support ring, 212-Second support ring, 213-Rod, 214-Reinforcing ring, 240-First motor, 241-Drive wheel, 242-First rotor, 243-Second rotor, 244-Third rotor, 245-Rotating belt, 310-Nozzle, 320-Water tank, 410-Agitator plate, 421-Second motor, 422-Support shaft, 430-Sludge discharge port. Detailed Implementation

[0031] The present invention will now be clearly and completely described in conjunction with the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly noted that:

[0032] The technical solutions and features provided in the various parts of this invention, including the following description, can be combined with each other without conflict.

[0033] Furthermore, the embodiments of the present invention described below are generally only some, not all, of the embodiments of the present invention. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0034] Regarding the terminology and units used in this invention: The terms "comprising," "having," and any variations thereof in the specification, claims, and related parts of this invention are intended to cover non-exclusive inclusion.

[0035] Figure 1 This is a perspective view of one embodiment of the auxiliary soil removal device for a pipe jacking machine according to the present invention. Figure 2 This is a perspective view of another embodiment of the auxiliary soil removal device for a pipe jacking machine according to the present invention. Figure 3 This is a cross-sectional view of an embodiment of the auxiliary soil removal device for a pipe jacking machine according to the present invention. Figure 4 This is a schematic diagram of the structure of the first drive mechanism in an embodiment of the auxiliary soil removal device for a pipe jacking machine of the present invention.

[0036] like Figure 1-4 As shown, the auxiliary soil removal device for a pipe jacking machine includes a housing 100, a soil-rock separation component, a water spraying component, and a mixing component. The housing 100 is provided with a feed inlet 110 connected to the soil removal pipe of the pipe jacking machine; the soil-rock separation component is used to separate pebbles and soil from the excavated rock and soil.

[0037] The soil-rock separation assembly includes a cylinder 210, a spiral conveyor 220, a rock discharge port 230, and a first driving mechanism. The inlet end of the cylinder 210 is connected to the feed inlet 110, and the cylinder 210 has a first through hole for soil to pass through. The spiral conveyor 220 is located inside the cylinder 210. The rock discharge port 230 is located on the housing 100 and is connected to the outlet end of the cylinder 210. The first driving mechanism is used to drive the cylinder 210 to rotate.

[0038] The cylindrical body 210 includes a first support ring 211, a second support ring 212, a rod 213, and a reinforcing ring 214. The first support ring 211 is located at the inlet end of the cylindrical body 210. The second support ring 212 is located at the outlet end of the cylindrical body 210. The rod 213 connects the first support ring 211 and the second support ring 212, and the rods 213 are spaced apart between the first support ring 211 and the second support ring 212, forming the first through hole between adjacent rods 213. The reinforcing ring 214 is located between the first support ring 211 and the second support ring 212.

[0039] The first driving mechanism includes a first motor 240, a drive wheel 241, a first rotating wheel 242, a second rotating wheel 243, a third rotating wheel 244, and a rotating belt 245. The first motor 240 and the drive wheel 241 are located outside the housing 100, and the housing 100 has a second through hole through which the rotating belt 245 passes. The drive wheel 241 is connected to the first motor 240. The shaft of the first rotating wheel 242 is connected to the housing 100, and the first rotating wheel 242 cooperates with a first support ring 211. The shaft of the first rotating wheel 242 is connected to the housing 100, and the second rotating wheel 243 cooperates with the second support ring 212. There are two first rotating wheels 242 and two rotating wheels 243, arranged symmetrically. The shaft of the third rotating wheel 244 is connected to the housing 100, and the third rotating wheel 244 is located between the first rotating wheel 242 and the drive wheel 241. The rotating belt 245 drives the first rotating wheel 242 to rotate with the drive wheel 241.

[0040] The water spray assembly includes nozzles 310 and a water tank 320. The nozzles 310 are arranged at intervals above the cylinder 210, and the water tank 320 is connected to the housing 100.

[0041] The stirring assembly is located below the cylinder 210. The stirring assembly includes stirring blades 410, a second drive mechanism for driving the stirring blades 410 to rotate, and a sludge discharge port 430. The second drive mechanism includes a second motor 421 and a support shaft 422. The support shaft 422 is axially arranged along the cylinder 210, and the stirring blades 410 are spaced apart on the support shaft 422. The sludge discharge port 430 is located on the shell 100 and is equipped with a filter screen.

[0042] An embodiment of the jacking equipment for tunnel construction in gravel strata according to the present invention includes a pipe jacking machine and the aforementioned auxiliary soil removal device.

[0043] The foregoing has described the relevant content of the present invention. Those skilled in the art will be able to implement the present invention based on these descriptions. All other embodiments obtained by those skilled in the art based on the above description of the present invention without inventive effort should fall within the scope of protection of the present invention.

Claims

1. An auxiliary unearthing device for a pipe-roofing jacking machine, having a housing (100), a feeding port (110) being provided on the housing (100) and connected with an unearthing pipe of the pipe-roofing jacking machine, characterized in that: The soil-stone separation assembly is used for separating pebbles and mud in excavated rock-soil; The soil-stone separation assembly comprises: A barrel (210) having an inlet end connected with the feeding port (110) and a first through hole for mud passing through; A spiral conveying piece (220) arranged inside the barrel (210); A pebble discharging port (230) arranged on the shell (100) and connected with an outlet end of the barrel (210); A first driving mechanism for driving the barrel (210) to rotate, the first driving mechanism comprising a first motor (240), a driving wheel (241), a first rotating wheel (242), a second rotating wheel (243), a rotating belt (245) and a third rotating wheel (244); the driving wheel (241) is connected with the first motor (240); rotating shafts of the first rotating wheel (242), the second rotating wheel (243) and the third rotating wheel (244) are connected with the shell (100); the rotating belt (245) is used for driving the first rotating wheel (242) or the second rotating wheel (243) to rotate with the driving wheel (241); the third rotating wheel (244) is arranged between the first rotating wheel (242) or the second rotating wheel (243) and the driving wheel (241); the first motor (240) and the driving wheel (241) are arranged outside the shell (100), and the shell (100) is provided with a second through hole for the rotating belt (245) to pass through; An agitating assembly arranged below the barrel (210), the agitating assembly comprising an agitating piece (410), a second driving mechanism for driving the agitating piece (410) to rotate and a mud discharging port (430) arranged on the shell (100), the second driving mechanism comprising a second motor (421), and the mud discharging port (430) being provided with a filter screen.

2. An auxiliary unearthing device for a pipe-roofing push bench as claimed in claim 1, characterized in that: The barrel (210) comprises: A first supporting ring (211) arranged at the inlet end of the barrel (210); A second supporting ring (212) arranged at the outlet end of the barrel (210); A rod body (213) connecting the first supporting ring (211) and the second supporting ring (212), the rod body (213) being arranged in intervals between the first supporting ring (211) and the second supporting ring (212), and the first through hole being formed between adjacent rod bodies (213).

3. An auxiliary unearthing device for a pipe-roofing push bench as claimed in claim 2, characterized in that: The first rotating wheel (242) cooperates with the first supporting ring (211); and the second rotating wheel (243) cooperates with the second supporting ring (212).

4. An auxiliary unearthing device for a pipe-roofing push bench as claimed in claim 3, characterized in that: The barrel (210) further comprises a reinforcing ring (214) arranged between the first supporting ring (211) and the second supporting ring (212); and the first rotating wheel (242) and the second rotating wheel (243) are both two and symmetrically arranged.

5. The auxiliary unearthing device for pipe-roofing pipe jacking machine according to claim 1, characterized in that: The auxiliary unearthing device further comprises a water spraying assembly, the water spraying assembly comprising a spray head (310) arranged above the barrel (210).

6. An auxiliary unearthing device for a pipe-roofing pusher as claimed in claim 5, characterized in that: The spray head (310) is arranged in intervals above the barrel (210); the water spraying assembly further comprises a water tank (320) connected with the shell (100).

7. The auxiliary unearthing device for the pipe-roofing push bench as claimed in claim 1, characterized in that: The second driving mechanism further comprises a support shaft (422) arranged axially along the barrel (210), and the stirring blades (410) are arranged in intervals on the support shaft (422).

8. Jacking equipment for sand-pebble stratum tunnel construction, comprising a pipe-roof jacking machine, characterized in that: The auxiliary unearthing device is also included.

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