Integrated test device for simulating shield soil bin and screw conveyer under multiple working conditions

Abstract

The invention belongs to the technical field of shield tests, and provides an integrated test device for simulating a shield soil bin and a spiral conveyor under multiple working conditions, the integrated test device comprises a soil bin system, the soil bin system comprises a soil bin, the inner side of the soil bin is communicated with an air pressure system and a water pressure system, and the air pressure system and the water pressure system are respectively used for adjusting the air pressure and the water pressure in the soil bin; the spiral conveying system comprises a conveying cylinder assembly, the bottom of the conveying cylinder assembly is communicated with the bottom of the soil bin, an angle adjusting assembly is arranged on the conveying cylinder assembly, a screw rod is in transmission connection with the interior of the conveying cylinder assembly, a variable-length spiral blade assembly is arranged on the screw rod, and the variable-length spiral blade assembly is communicated with the interior of the soil bin; the conveying cylinder assembly is provided with a slag discharging opening with the movable position, and the distance between the slag discharging opening and the soil bin is adjusted according to the length of the length-variable spiral blade assembly. According to the invention, the real flow and pressure change of a soil body in a three-phase state can be simulated under a shield excavation non-full bin working condition and different spiral conveying structures.

Description

Technical Field

[0001] The invention belongs to the technical field of shield test, and in particular relates to an integrated test device for simulating shield soil bin and screw conveyor under multiple working conditions. Background Art

[0002] Mechanized shield and TBM excavation construction method is a safe, efficient and environmentally friendly underground construction method, which is widely used in water conservancy, transportation, mining and other fields. The whole section of the tunnel is formed in one go by rotating and advancing the cutterhead and crushing the rock with the disc cutter. During the earth pressure balance shield excavation process, the screw conveyor is prone to blockage and gushing, which affects the progress of the project and easily causes contract disputes.

[0003] In order to avoid the blockage and gushing of screw conveyors during mechanized excavation, a number of technologies have been applied to avoid the blockage and gushing of screw conveyors. At present, the most effective technology for dealing with the blockage and gushing of screw conveyors is the slag improvement technology. However, shield excavation involves many different working conditions and different screw conveyor structures. For example, full bin and half bin excavation, screw conveyor inclination angle, spiral blade length, etc., will affect the flow and pressure changes of soil and water in the soil bin and screw conveyor, making it difficult to accurately apply the slag improvement technology. The existing test device for simulating shield screw conveyors can only simulate screw conveyors under a single condition, such as only water pressure conditions or only air pressure conditions, and cannot simulate the actual flow and pressure changes of soil in a three-phase state under non-full bin conditions of shield excavation.

[0004] Therefore, for different construction conditions and different screw conveyor structures, in order to more accurately study the flow and pressure changes of soil and water in the soil bin and screw conveyor, and prevent the occurrence of screw conveyor gushing and blockage problems, a test device that more realistically simulates the shield soil bin and screw conveyor under different working conditions and different screw conveyor structures is needed to achieve the precise application of slag improvement technology. Summary of the invention

[0005] The purpose of the present invention is to provide an integrated test device for simulating shield soil bin and screw conveyor under multiple working conditions to solve the above problems and achieve the purpose of simulating the real flow and pressure changes of soil in a three-phase state under non-full bin conditions of shield excavation.

[0006] To achieve the above object, the present invention provides the following solution: an integrated test device for simulating shield soil bin and screw conveyor under multiple working conditions, comprising:

[0007] A soil bin system, comprising a soil bin, wherein the inside of the soil bin is connected to an air pressure system and a water pressure system, wherein the air pressure system and the water pressure system are used to adjust the air pressure and the water pressure in the soil bin respectively;

[0008] The screw conveying system includes a conveying barrel assembly, the bottom of which is connected to the bottom of the soil bin, an angle adjustment assembly is provided on the conveying barrel assembly, a screw is transmission-connected inside the conveying barrel assembly, a variable-length spiral blade assembly is provided on the screw, the variable-length spiral blade assembly is connected to the inside of the soil bin, a slag discharge port with a movable position is opened on the conveying barrel assembly, and the distance between the slag discharge port and the soil bin is adjusted according to the length of the variable-length spiral blade assembly.

[0009] Preferably, the conveying cylinder assembly includes an outer cylinder, a front inner cylinder and a rear inner cylinder, the two ends of the outer cylinder are respectively slidably sleeved with the front inner cylinder and the rear inner cylinder, the end of the front inner cylinder away from the outer cylinder is connected to the soil bin, the slag discharge port is opened on the side wall of the outer cylinder, and the distance between the slag discharge port and the soil bin changes with the movement of the outer cylinder.

[0010] Preferably, the angle adjustment assembly comprises a lifting column arranged on the ground, the top of the lifting column is vertically slidably connected with a lifting assembly, and the top of the lifting assembly is hingedly connected to the bottom of the rear inner cylinder.

[0011] Preferably, one end of the rear inner cylinder away from the outer cylinder is fixedly connected with a driving assembly, and the driving assembly is drivingly connected to one end of the screw rod away from the soil bin.

[0012] Preferably, the variable-length spiral blade assembly includes a front-section spiral blade, which is detachably connected to an end of the screw rod close to the soil bin via a connecting piece, and an end of the screw rod away from the front-section spiral blade is transmission-connected with a spiral blade length control assembly, and an end of the spiral blade length control assembly close to the front-section spiral blade is detachably connected to a rear-section spiral blade, and the rear-section spiral blade is adapted to the front-section spiral blade, and the spiral blade length control assembly is used to adjust the distance between the rear-section spiral blade and the soil bin, and the slag discharge port is arranged corresponding to an end of the rear-section spiral blade away from the front-section spiral blade.

[0013] Preferably, the air pressure system includes an air pressure pump, the air outlet end of the air pressure pump is connected to the air pressure injection port through an electric air pressure regulating valve, and the air pressure injection port is connected to the soil bin.

[0014] Preferably, a soil bin slag adding port cover is hingedly connected to the top of the soil bin, and the air pressure injection port is connected to the interior of the soil bin through the soil bin slag adding port cover.

[0015] Preferably, the water pressure system includes a water pressure pump and a soil bin water injection plate fixedly connected to the side wall of the soil bin, the water outlet end of the water pressure pump is connected to a water pressure injection port through an electric water pressure regulating valve, the water pressure injection port is connected to the bottom of the soil bin water injection plate, and a plurality of water injection holes are opened on the soil bin water injection plate from top to bottom, and the plurality of water injection holes are connected to the interior of the soil bin.

[0016] Preferably, a plurality of soil bin wall pressure monitoring components are arranged from top to bottom on the side wall of the soil bin away from the soil bin water injection plate, and the soil bin wall pressure monitoring components include a first soil pressure sensor and a first water pressure sensor fixedly connected to the side wall of the soil bin.

[0017] Preferably, a plurality of screw conveyor pressure monitoring components are respectively provided on the inner wall of the front inner cylinder and the inner wall of the outer cylinder, and the screw conveyor pressure monitoring components include a second soil pressure sensor and a second water pressure sensor.

[0018] Compared with the prior art, the present invention has the following advantages and technical effects: the main function of the soil bin is to hold an appropriate amount of test slag; the main function of the air pressure system is to adjust the air pressure in the soil bin; the main function of the water pressure system is to adjust the water pressure in the soil bin; the main function of the conveying barrel assembly is to cooperate with the variable length spiral blade assembly to realize slag transportation, while changing the distance between the slag discharge port and the soil bin, and cooperating with the structure of the variable length spiral blade to ensure the normal operation of the conveying function; the main function of the variable length spiral blade assembly is to realize the research on different screw conveyor structures by changing the conveying length. On the whole, the present invention can change the water pressure and air pressure conditions in the soil bin, and change the structural characteristics of the screw conveyor such as the conveying length and inclination angle, so as to more accurately study the flow and pressure changes of soil and water in the soil bin and the screw conveyor, and more effectively prevent and control the occurrence of gushing and blockage problems of the screw conveyor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the structure of the test device of the present invention;

[0021] Figure 2 This is a layout diagram of water injection holes of the soil bin water injection plate of the present invention;

[0022] Figure 3 It is a layout diagram of the soil pressure and water pressure sensors on the inner wall of the soil bin of the present invention;

[0023] Figure 4 It is a top view of the arrangement of the wall soil pressure and water pressure sensors of the screw conveyor of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the angle control component of the screw conveyor of the present invention;

[0025] Figure 6 1. It is a comparative schematic diagram of the spiral blade length adjustment of the present invention;

[0026] Among them, 1. air pressure system; 11. electric air pressure regulating valve; 12. air pressure pump; 2. water pressure system; 21. water storage tank; 22. water pressure pump; 23. electric water pressure regulating valve; 3. soil bin system; 31. air pressure injection port; 32. soil bin slag filling port cover; 33. soil bin water injection plate; 34. soil bin wall pressure monitoring component; 35. soil bin; 36. water pressure injection port; 37. angle control component; 38. first soil pressure sensor; 39. first water pressure sensor Sensor; 4, screw conveying system; 41, front section inner cylinder; 42, screw conveyor pressure monitoring component; 43, front section spiral blade; 44, rear section spiral blade; 45, outer cylinder; 46, screw; 47, slag discharge port; 48, spiral blade length adjustment component; 49, lifting component; 410, rear section inner cylinder; 411, driving component; 412, lifting column; 413, tripod; 414, second soil pressure sensor; 415, second water pressure sensor. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Reference Figure 1-Figure 6 The present invention provides an integrated test device for simulating shield soil bin and screw conveyor under multiple working conditions, comprising:

[0030] The soil bin system 3 includes a soil bin 35, the inside of which is connected to an air pressure system 1 and a water pressure system 2, the air pressure system 1 and the water pressure system 2 are used to adjust the air pressure and water pressure in the soil bin 35 respectively;

[0031] The screw conveying system 4 includes a conveying barrel assembly, the bottom of which is connected to the bottom of the soil bin 35, and an angle adjustment assembly is provided on the conveying barrel assembly. A screw 46 is transmission-connected inside the conveying barrel assembly, and a variable-length spiral blade assembly is provided on the screw 46. The variable-length spiral blade assembly is connected to the inside of the soil bin 35, and a slag discharge port 47 with a movable position is opened on the conveying barrel assembly, and the distance between the slag discharge port 47 and the soil bin 35 is adjusted according to the length of the variable-length spiral blade assembly.

[0032] The main function of the soil bin 35 is to hold an appropriate amount of test slag; the main function of the air pressure system 1 is to adjust the air pressure in the soil bin 35; the main function of the water pressure system 2 is to adjust the water pressure in the soil bin 35; the main function of the conveying barrel assembly is to cooperate with the variable length spiral blade assembly to realize the conveying of slag, and at the same time change the distance between the slag discharge port 47 and the soil bin 35, and cooperate with the structure of the variable length spiral blade to ensure the normal operation of the conveying function; the main function of the variable length spiral blade assembly is to realize the research on different screw conveyor structures by changing the conveying length. On the whole, the present invention can change the water pressure and air pressure conditions in the soil bin, and change the conveying length, inclination angle and other structural characteristics of the screw conveyor, so as to more accurately study the flow and pressure changes of soil and water in the soil bin and the screw conveyor, and more effectively prevent and control the occurrence of gushing and blockage problems of the screw conveyor.

[0033] A further optimized solution is that the conveying cylinder assembly includes an outer cylinder 45, a front inner cylinder 41 and a rear inner cylinder 410, and the two ends of the outer cylinder 45 are respectively slidably sleeved with the front inner cylinder 41 and the rear inner cylinder 410, and the end of the front inner cylinder 41 away from the outer cylinder 45 is connected to the soil bin 35, and the slag discharge port 47 is opened on the side wall of the outer cylinder 45. The distance between the slag discharge port 47 and the soil bin 35 changes with the movement of the outer cylinder 45.

[0034] like Figure 6 As shown, the front inner cylinder 41 and the outer cylinder 45, and the rear inner cylinder 410 and the outer cylinder 45 are sealed and connected by rubber water stop rings. The outer cylinder 45 can drive the slag discharge port 47 to move along the axis of the outer cylinder 45 by sliding between the front inner cylinder 41 and the rear inner cylinder 410, so as to achieve the effect of changing the distance between the slag discharge port 47 and the soil bin 35, so as to adapt to the length of different variable length spiral blade assemblies and ensure effective transportation.

[0035] According to a further optimization scheme, the angle adjustment assembly includes a lifting column 412 disposed on the ground, the top of the lifting column 412 is vertically slidably connected to a lifting assembly 49, and the top of the lifting assembly 49 is hingedly connected to the bottom of the rear inner tube 410.

[0036] like Figure 1As shown, the lifting component 49 and the lifting column 412 can be connected by hydraulic or motor-driven screws to achieve the extension or shortening of the lifting component 49, thereby changing the height of the rear inner cylinder 410 and achieving angle adjustment of the variable-length spiral blade component.

[0037] According to a further optimized solution, a plurality of tripods 413 are fixedly connected to the bottom of the lifting column 412 , and the tripods 413 can prevent the lifting column 412 from tipping over.

[0038] According to a further optimized solution, the end of the rear inner cylinder 410 away from the outer cylinder 45 is fixedly connected with a driving assembly 411, and the driving assembly is transmission-connected with the end of the screw rod 46 away from the soil bin 35.

[0039] like Figure 1 As shown, the drive component 411 can selectively use a reduction motor, the output shaft of the reduction motor is coaxially fixedly connected to the top of the screw 46, and a torque sensor (not shown in the figure) is also provided between the reduction motor and the screw 46 to monitor the resistance exerted on the screw 46.

[0040] A further optimized solution is provided, in which the variable-length spiral blade assembly includes a front spiral blade 43, which is detachably connected to an end of a screw 46 close to the soil bin 35 through a connecting piece, and an end of the screw 46 away from the front spiral blade 43 is transmission-connected to a spiral blade length control assembly 48, and an end of the spiral blade length control assembly 48 close to the front spiral blade 43 is detachably connected to a rear spiral blade 44, and the rear spiral blade 44 is adapted to the front spiral blade 43. The spiral blade length control assembly 48 is used to adjust the distance between the rear spiral blade 44 and the soil bin 35, and a slag discharge port 47 is provided corresponding to an end of the rear spiral blade 44 away from the front spiral blade 43.

[0041] like Figure 1 and Figure 6 As shown, the connecting piece can be a bolt-nut assembly and a connecting ear structure, and the bolt-nut assembly is used to achieve fixed connection and disassembly between the front spiral blade 43 and the screw rod 46.

[0042] The spiral blade length control component 48 includes an electric rotary motor (not shown in the figure), which is connected to the screw 46 in a transmission manner, so that the electric rotary motor can rotate around the screw 46 and drive the electric rotary motor to move along the axis direction of the screw 46 through the thread transmission, thereby driving the rear spiral blade 44 to rotate downward or upward along the screw 46 and the front spiral blade 43, and at the same time ensuring the overlap between the rear spiral blade 44 and the front spiral blade 43 to ensure the effectiveness of the conveying function. The end of the rear spiral blade 44 away from the front spiral blade 43 is also detachably connected to the electric rotary motor through a bolt and nut assembly, which can facilitate the test personnel to simultaneously replace the matching front spiral blade 43 and the rear spiral blade 44 with different pitches, so as to study the influence of different pitches on the flow and pressure changes of soil and water in the screw conveyor.

[0043] To further optimize the solution, limit switches are respectively provided between the spiral blade length adjustment component 48 and the screw rod 46, and between the lifting component 49 and the lifting column 412, for fixing the position between the spiral blade length adjustment component 48 and the screw rod 46, and between the lifting component 49 and the lifting column 412, respectively.

[0044] To further optimize the assembly, an angle control assembly 37 is provided between the soil bin 35 and the front inner tube 41. The angle control assembly 37 seals the soil bin 35 and the front inner tube 41, and the angle control assembly can change the inclination angle of the screw conveyor in four gears, each of which is 5 degrees.

[0045] like Figure 5 As shown, the angle control assembly 37 is composed of four sets of mutually sealed and slidably connected fan-shaped sealing cylinders. The lower part of the front inner cylinder 41 is hinged to the soil bin 35, and the upper part is sealed and connected to the inner wall of the angle control assembly 37 through a rubber gasket.

[0046] According to a further optimization scheme, the air pressure system 1 includes an air pressure pump 12 , the air outlet end of the air pressure pump 12 is connected to the air pressure injection port 31 through the electric air pressure regulating valve 11 , and the air pressure injection port 31 is connected to the soil bin 35 .

[0047] According to a further optimized solution, a soil bin slag adding cover 32 is hinged on the top of the soil bin 35 , and the air pressure injection port 31 is connected to the interior of the soil bin 35 through the soil bin slag adding cover 32 .

[0048] like Figure 1 and Figure 2 As shown, the soil bin slag adding cover 32 can facilitate the test personnel to add slag into the soil bin 35, so as to simulate the soil flow and pressure change under the condition of not full bin. The main function of the electric air pressure regulating valve 11 is to automatically adjust the air pressure pumped into the soil bin 35 by the air pressure pump 12.

[0049] A further optimized solution is provided, in which the water pressure system 2 includes a water pressure pump 22 and a soil bin water injection plate 33 fixedly connected to the side wall of the soil bin 35. The water outlet of the water pressure pump 22 is connected to a water pressure injection port 36 through an electric water pressure regulating valve 23. The water pressure injection port 36 is connected to the bottom of the soil bin water injection plate 33. A plurality of water injection holes are provided on the soil bin water injection plate 33 from top to bottom, and the plurality of water injection holes are connected to the interior of the soil bin 35.

[0050] According to a further optimization scheme, the water inlet end of the hydraulic pump 22 is connected to the water storage tank 21 .

[0051] like Figure 1 As shown, the main function of the electric water pressure regulating valve 23 is to automatically adjust the water pressure pumped into the soil bin water injection plate 33 by the water pressure pump 22. By injecting water into the bottom of the soil bin water injection plate 33 and flowing into the soil bin 35 through a plurality of water injection holes on the soil bin water injection plate 33, the water pressure in the soil bin 35 can be distributed in a gradient.

[0052] To further optimize the solution, a plurality of soil bin wall pressure monitoring components 34 are arranged from top to bottom on the side wall of the soil bin 35 away from the soil bin water injection plate 33. The soil bin wall pressure monitoring components 34 include a first soil pressure sensor 38 and a first water pressure sensor 39 fixedly connected to the side wall of the soil bin 35.

[0053] like Figure 3 As shown, six groups of first soil pressure sensors 38 and first water pressure sensors 39 are distributed from top to bottom in the soil bin 35 , and the soil pressure and water pressure variation curves in the soil bin 35 can be obtained.

[0054] To further optimize the solution, a plurality of screw conveyor pressure monitoring components 42 are respectively provided on the inner wall of the front inner cylinder 41 and the inner wall of the outer cylinder 45 , and the screw conveyor pressure monitoring components 42 include a second soil pressure sensor 414 and a second water pressure sensor 415 .

[0055] like Figure 4 As shown, four groups of second soil pressure sensors 414 and second water pressure sensors 415 are distributed from top to bottom in the inner wall of the front inner cylinder 41 and the outer cylinder 45, and the soil pressure and water pressure variation curves inside the spiral conveyor can be obtained.

[0056] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0057] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An integrated test device for simulating shield soil bin and screw conveyor under multiple working conditions, characterized in that: include: A soil bin system (3) comprises a soil bin (35), wherein the inside of the soil bin (35) is connected to an air pressure system (1) and a water pressure system (2), wherein the air pressure system (1) and the water pressure system (2) are used to adjust the air pressure and the water pressure in the soil bin (35), respectively; The screw conveying system (4) comprises a conveying barrel assembly, the bottom of which is in communication with the bottom of the soil bin (35), an angle adjustment assembly being arranged on the conveying barrel assembly, a screw rod (46) being in transmission connection with the inside of the conveying barrel assembly, a variable length spiral blade assembly being arranged on the screw rod (46), the variable length spiral blade assembly being in communication with the inside of the soil bin (35), a slag discharge port (47) being arranged on the conveying barrel assembly and the distance between the slag discharge port (47) and the soil bin (35) being adjusted according to the length of the variable length spiral blade assembly.

2. The integrated test device for simulating shield soil bin and screw conveyor under multiple working conditions according to claim 1 is characterized by: The conveying cylinder assembly comprises an outer cylinder (45), a front inner cylinder (41) and a rear inner cylinder (410); the front inner cylinder (41) and the rear inner cylinder (410) are respectively slidably sleeved on the two ends of the outer cylinder (45); the end of the front inner cylinder (41) away from the outer cylinder (45) is connected to the soil bin (35); the slag discharge port (47) is provided on the side wall of the outer cylinder (45); and the distance between the slag discharge port (47) and the soil bin (35) changes with the movement of the outer cylinder (45).

3. The integrated test device for simulating shield soil bin and screw conveyor under multiple working conditions according to claim 2 is characterized by: The angle adjustment assembly comprises a lifting column (412) arranged on the ground, the top of the lifting column (412) is vertically slidably connected to a lifting assembly (49), and the top of the lifting assembly (49) is hingedly connected to the bottom of the rear inner cylinder (410).

4. The integrated test device for simulating shield soil bin and screw conveyor under multiple working conditions according to claim 2 is characterized by: One end of the rear inner cylinder (410) away from the outer cylinder (45) is fixedly connected to a driving assembly (411), and the driving assembly is drivingly connected to one end of the screw rod (46) away from the soil bin (35).

5. The integrated test device for simulating shield soil bin and screw conveyor under multiple working conditions according to claim 2 is characterized by: The variable length spiral blade assembly comprises a front spiral blade (43), wherein the front spiral blade (43) is detachably connected to an end of the screw (46) close to the soil bin (35) through a connecting piece, and an end of the screw (46) away from the front spiral blade (43) is transmission-connected to a spiral blade length control assembly (48), and an end of the spiral blade length control assembly (48) close to the front spiral blade (43) is detachably connected to a rear spiral blade (44), wherein the rear spiral blade (44) is adapted to the front spiral blade (43), and the spiral blade length control assembly (48) is used to adjust the distance between the rear spiral blade (44) and the soil bin (35), and the slag discharge port (7) is arranged corresponding to an end of the rear spiral blade (44) away from the front spiral blade (43).

6. The integrated test device for simulating shield soil bin and screw conveyor under multiple working conditions according to claim 1 is characterized by: The air pressure system (1) comprises an air pressure pump (12), the air outlet end of the air pressure pump (12) is connected to an air pressure injection port (31) via an electric air pressure regulating valve (11), and the air pressure injection port (31) is connected to the soil bin (35).

7. The integrated test device for simulating shield soil bin and screw conveyor under multiple working conditions according to claim 6 is characterized by: A soil bin slag filling port cover (32) is hingedly connected to the top of the soil bin (35), and the air pressure injection port (31) is communicated with the interior of the soil bin (35) through the soil bin slag filling port cover (32).

8. The integrated test device for simulating shield soil bin and screw conveyor under multiple working conditions according to claim 1 is characterized by: The hydraulic system (2) comprises a hydraulic pump (22) and a soil bin water injection plate (33) fixedly connected to the side wall of the soil bin (35); the water outlet of the hydraulic pump (22) is connected to a hydraulic injection port (36) via an electric hydraulic pressure regulating valve (23); the hydraulic injection port (36) is connected to the bottom of the soil bin water injection plate (33); a plurality of water injection holes are provided on the soil bin water injection plate (33) from top to bottom; and the plurality of water injection holes are connected to the interior of the soil bin (35).

9. The integrated test device for simulating shield soil bin and screw conveyor under multiple working conditions according to claim 8, characterized in that: A plurality of soil bin wall pressure monitoring components (34) are arranged from top to bottom on the side wall of the soil bin (35) away from the soil bin water injection plate (33), and the soil bin wall pressure monitoring components (34) include a first soil pressure sensor (38) and a first water pressure sensor (39) fixedly connected to the side wall of the soil bin (35).

10. The integrated test device for simulating shield soil bin and screw conveyor under multiple working conditions according to claim 2, characterized in that: A plurality of screw conveyor pressure monitoring components (42) are respectively arranged on the inner wall of the front inner cylinder (41) and the inner wall of the outer cylinder (45), and the screw conveyor pressure monitoring components (42) include a second soil pressure sensor (414) and a second water pressure sensor (415).

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