A dual mode TBM cutterhead structure

Abstract

The application belongs to the technical field of tunnel construction, in particular to a double-mode TBM cutterhead structure, which comprises a cutterhead main body and a plurality of crushing structures, wherein the crushing structure comprises a slag discharge box, the slag discharge box is fixedly installed on the inner wall of the cutterhead main body, one side of the slag discharge box is provided with a telescopic air cylinder, the output shaft of the telescopic air cylinder is fixedly installed with a driving gear plate, one side of the slag discharge box is symmetrically provided with a rotating shaft, the outer wall of the rotating shaft is fixedly installed with a swing gear, the teeth of the swing gear and the teeth of the driving gear plate are engaged, and the outer wall of the rotating shaft is symmetrically fixedly installed with a swing plate. Through the crushing structure, the hammer plate swings reciprocatingly to the inside of the slag discharge box under the action of the telescopic air cylinder, when the mud block is stuck in the inside of the slag discharge box, the hammer plate will knock the stuck mud block to crush the mud block, so that the situation that the mud block is stuck in the slag discharge port can be effectively prevented, the inside of the slag discharge box is ensured to be unobstructed, and the device cannot normally operate due to the blockage caused by the mud block is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of tunnel construction, and particularly relates to a dual-mode TBM cutterhead structure. BACKGROUND

[0002] A tunnel boring machine (TBM) is a new and advanced tunnel construction machine which uses a rotary cutter to excavate and break the surrounding rock in the hole and dig a tunnel, and has the characteristics of rapidity, safety, economy and high quality, and is an important tool for underground space development.

[0003] A patent with the publication number CN217327318U discloses a cutterhead structure of a TBM dual-mode shield machine, which combines two mudguards after the installation of a cutter, and the two mudguards play a role in isolating and blocking the bearing, so that the bearing position is in a relatively independent and closed space, thereby preventing the silt soil from entering the bearing for installing the cutter, causing the bearing to be blocked and stuck, and ensuring the normal rotation of the cutter, and the structure is more optimized and the design is more reasonable.

[0004] However, in the process of working, when the cutter crushes the soil, the crushed soil is discharged through the discharge port, and large pieces of soil may be stuck in the discharge port during the discharge of the soil, causing the discharge port to be blocked and affecting the normal use of the equipment.

[0005] Therefore, the application provides a dual-mode TBM cutterhead structure. SUMMARY

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem in the background art.

[0007] The technical scheme adopted by the application to solve the technical problem is that the dual-mode TBM cutterhead structure comprises a cutterhead body and a plurality of crushing structures, the crushing structure comprises a discharge box, the discharge box is fixedly installed on the inner wall of the cutterhead body, one side of the discharge box is provided with an extension cylinder, the output shaft of the extension cylinder is fixedly installed with a driving gear plate, one side of the discharge box is symmetrically provided with a rotating shaft, the outer wall of the rotating shaft is fixedly installed with an oscillating gear, the teeth of the oscillating gear and the teeth of the driving gear plate are engaged, the outer wall of the rotating shaft is symmetrically fixedly installed with an oscillating plate, the outer wall of the oscillating plate is fixedly installed with a horizontal plate, and the outer wall of the horizontal plate is fixedly installed with a plurality of hammer plates.

[0008] Preferably, the anti-blocking structure comprises a driving rod slidably installed on the inner wall of the residue discharging box, a pushing gear plate fixedly installed on the outer wall of the driving rod, the teeth of the pushing gear plate and the teeth of the swing gear being in meshing engagement, a plurality of sliding gear plates fixedly installed on the outer wall of the driving rod, a roller shaft provided on one side of each of the sliding gear plates, a rotating gear fixedly installed on the outer wall of the roller shaft, the teeth of the rotating gear and the teeth of the sliding gear plate being in meshing engagement, and a circular plate fixedly installed on one end of the roller shaft, a plurality of stirring shafts being fixedly installed on the outer wall of the circular plate.

[0009] Preferably, a buffer plate is slidably installed on the inner wall of the hammer plate, a telescopic column and an elastic member are fixedly installed between the outer wall of the buffer plate and the inner wall of the hammer plate, the elastic member is sleeved on the outer side of the telescopic column, and a hammer head is fixedly installed on the outer wall of the buffer plate.

[0010] Preferably, two groups of positioning plates are fixedly installed on the outer wall of the residue discharging box, the number of positioning plates in each group is two, and two rotating shafts are rotatably installed on the inner wall of each group of positioning plates.

[0011] Preferably, a limiting groove is symmetrically formed in the outer wall of the driving gear plate, limiting racks are fixedly installed on the outer wall of the residue discharging box in a symmetrical manner, and the outer walls of the two limiting racks are slidably connected with the inner walls of the two limiting grooves.

[0012] Preferably, an installation plate is fixedly installed on the outer wall of the residue discharging box, and the telescopic air cylinder is fixedly installed on the inner side of the installation plate.

[0013] Preferably, a frame body is fixedly installed on the inner wall of the residue discharging box, the inner wall of the frame body is slidably connected with the outer wall of the hammer plate, and a material guide plate is fixedly installed on the outer wall of the residue discharging box.

[0014] Preferably, a sliding groove is formed in the outer wall of the pushing gear plate, a supporting rack is fixedly installed on the outer wall of the residue discharging box, and the outer wall of the supporting rack is slidably connected with the inner wall of the sliding groove.

[0015] Preferably, sliding blocks are fixedly installed on both ends of the driving rod, the outer walls of the sliding blocks are slidably connected with the inner wall of the residue discharging box, and the outer wall of the roller shaft is rotatably connected with the inner wall of the residue discharging box.

[0016] Preferably, a plurality of center knives, positive hobbing cutters and edge hobbing cutters are rotatably installed on the inner wall of the cutter head body, and a plurality of water injection holes are formed in the inner wall of the cutter head body.

[0017] The present application has the following advantages:

[0018] 1. The double mode TBM cutterhead structure of the present application, by setting the crushing structure, under the action of the telescopic cylinder, the hammer plate reciprocates to the inside of the slag tank, when the mud block is stuck in the inside of the slag tank, the hammer plate will knock the stuck mud block to crush the mud block, so that the situation of mud block stuck in the slag discharge port can be effectively prevented, the inside of the slag tank is ensured to be unobstructed, and the device cannot normally operate due to the blockage caused by the mud block.

[0019] 2. The double mode TBM cutterhead structure of the present application, by setting the anti-blocking structure, when the slag tank is working, the driving tooth plate reciprocates under the action of the swing gear, and then the stirring shaft can reciprocate in the inside of the slag tank, and under the action of the stirring shaft, the slag in the inside of the slag tank can be dredged, so that the slag can be effectively discharged, and the inside of the slag tank is prevented from being blocked.

[0020] 3. The double mode TBM cutterhead structure of the present application, when crushing the mud block, the hammer head knocks the mud block under the action of the hammer plate, when the hammer head contacts the mud block, the elastic member will be forced to contract and buffer, preventing damage to the device caused by impact. BRIEF DESCRIPTION OF DRAWINGS

[0021] The present application will be further described below in conjunction with the drawings.

[0022] Figure 1 is a perspective view of the present application;

[0023] Figure 2 is a structure diagram of the crushing structure of the present application;

[0024] Figure 3 is a structure diagram of the swing gear of the present application;

[0025] Figure 4 is a structure diagram of the driving tooth plate of the present application;

[0026] Figure 5 is a structure diagram of the driving tooth plate of the present application;

[0027] Figure 6 is a structure diagram of the driving tooth plate of the present application;

[0028] Figure 7 is a structure diagram of the hammer plate of the present application;

[0029] In the figure: 1, cutter head main body; 2, crushing structure; 201, residue discharging box; 202, telescopic air cylinder; 203, driving toothed plate; 204, rotating shaft; 205, swing gear; 206, swing plate; 207, cross plate; 208, hammer plate; 2081, buffer plate; 2082, telescopic column; 2083, elastic member; 2084, hammer head; 209, positioning plate; 210, limiting groove; 211, limiting frame; 212, mounting plate; 213, frame body; 214, material guiding plate; 3, anti-blocking structure; 301, driving rod; 302, pushing toothed plate; 303, sliding toothed plate; 304, roller; 305, rotating gear; 306, round plate; 307, material pushing shaft; 308, sliding groove; 309, supporting frame; 310, sliding block; 4, center cutter; 5, straight hob; 6, side hob; 7, water spraying hole. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0031] As shown in the figure, the double-mode TBM cutter head structure according to the present application comprises a cutter head main body 1, and further comprises a plurality of crushing structures 2, each of which comprises a residue discharging box 201 fixedly installed on the inner wall of the cutter head main body 1, a telescopic air cylinder 202 provided on one side of the residue discharging box 201, a driving toothed plate 203 fixedly installed on the output shaft of the telescopic air cylinder 202, a rotating shaft 204 symmetrically provided on one side of the residue discharging box 201, a swing gear 205 fixedly installed on the outer wall of the rotating shaft 204, the teeth of the swing gear 205 being engaged with the teeth of the driving toothed plate 203, a swing plate 206 symmetrically fixedly installed on the outer wall of the rotating shaft 204, a cross plate 207 fixedly installed between the outer walls of the swing plates 206, and a plurality of hammer plates 208 fixedly installed on the outer wall of the cross plate 207. Figures 1 to 4 When the tunnel is excavated, the soil will enter the inside of the residue discharging box 201, the telescopic air cylinder 202 is started to drive the driving toothed plate 203 to move back and forth, the driving toothed plate 203 drives the swing gear 205 to rotate back and forth when it moves, the rotating shaft 204 is driven to rotate by the swing gear 205, the swing plate 206 is driven to swing when the rotating shaft 204 rotates, the hammer plates 208 are driven to swing by the cross plate 207 when the swing plate 206 swings, and the two hammer plates 208 on the two sides are simultaneously extended to the inside of the residue discharging box 201 through the slots on the residue discharging box 201, the hammer plates 208 are extended to the inside of the residue discharging box 201 to knock the large mud blocks when the large mud blocks are stuck in the inside of the residue discharging box 201, so that the mud blocks are crushed.

[0032] As shown in the figure, the double-mode TBM cutter head structure according to the present application comprises a cutter head main body 1, and further comprises a plurality of crushing structures 2, each of which comprises a residue discharging box 201 fixedly installed on the inner wall of the cutter head main body 1, a telescopic air cylinder 202 provided on one side of the residue discharging box 201, a driving toothed plate 203 fixedly installed on the output shaft of the telescopic air cylinder 202, a rotating shaft 204 symmetrically provided on one side of the residue discharging box 201, a swing gear 205 fixedly installed on the outer wall of the rotating shaft 204, the teeth of the swing gear 205 being engaged with the teeth of the driving toothed plate 203, a swing plate 206 symmetrically fixedly installed on the outer wall of the rotating shaft 204, a cross plate 207 fixedly installed between the outer walls of the swing plates 206, and a plurality of hammer plates 208 fixedly installed on the outer wall of the cross plate 207. Figures 5 to 6As shown, the anti-blocking structure 3 comprises a driving rod 301 slidably installed on the inner wall of the residue discharging box 201, a pushing gear plate 302 fixedly installed on the outer wall of the driving rod 301, a plurality of sliding gear plates 303 fixedly installed on the outer wall of the driving rod 301, a roller shaft 304 provided on one side of each sliding gear plate 303, a rotating gear 305 fixedly installed on the outer wall of the roller shaft 304, a circular plate 306 fixedly installed on one end of the roller shaft 304, and a plurality of stirring shafts 307 fixedly installed on the outer wall of the circular plate 306. When the oscillating gear 205 reciprocatingly rotates, the pushing gear plate 302 engaged with the oscillating gear 205 reciprocatingly moves, the driving rod 301 moves due to the movement of the pushing gear plate 302, the sliding gear plates 303 connected with the driving rod 301 reciprocatingly move, the rotating gears 305 engaged with the sliding gear plates 303 reciprocatingly rotate due to the reciprocating movement of the sliding gear plates 303, the roller shaft 304 rotates due to the reciprocating rotation of the rotating gears 305, and the stirring shafts 307 reciprocatingly rotate due to the rotation of the roller shaft 304, so that the soil entering the residue discharging box 201 is loosened, and the clogging is prevented.

[0033] As shown in Figure 7 the inner wall of the hammer plate 208 is slidably installed with a buffer plate 2081, the outer wall of the buffer plate 2081 and the inner wall of the hammer plate 208 are fixedly installed with an extension column 2082 and an elastic member 2083, the elastic member 2083 is sleeved on the outer side of the extension column 2082, and the outer wall of the buffer plate 2081 is fixedly installed with a hammer head 2084. During the reciprocating oscillation of the hammer plate 208, the hammer head 2084 strikes the mud block clamped on the inner side of the residue discharging box 201. When the hammer head 2084 contacts the mud block, the elastic member 2083 is contracted to buffer, so that the damage of the device caused by the strong impact is prevented.

[0034] As shown in Figures 2 to 5 the outer wall of the residue discharging box 201 is fixedly installed with two groups of positioning plates 209, each group of positioning plates 209 comprises two positioning plates, and the two rotating shafts 204 are rotatably installed on the inner wall of each group of positioning plates 209. The positioning plates 209 position the rotating shafts 204, keep the rotating shafts 204 in the appropriate position, and enable the rotating shafts 204 to rotate, so that the power can be effectively transmitted.

[0035] As shown in Figures 2 to 4As shown, the outer wall of the driving tooth plate 203 is symmetrically provided with a limiting groove 210, the outer wall of the slag discharge box 201 is symmetrically fixedly provided with a limiting frame 211, the outer walls of the two limiting frames 211 are respectively in sliding connection with the inner walls of the two limiting grooves 210; through the cooperation of the limiting groove 210 and the limiting frame 211, the driving tooth plate 203 is limited, so that the driving tooth plate 203 can only move in a preset direction, the stability of the driving tooth plate 203 during movement is ensured, and deviation of the driving tooth plate 203 during movement is prevented.

[0036] As shown in the Figures 2 to 4 As shown, the outer wall of the slag discharge box 201 is fixedly provided with a mounting plate 212, and the telescopic air cylinder 202 is fixedly installed on the inner side of the mounting plate 212; the telescopic air cylinder 202 is fixed through the mounting plate 212, a fulcrum is provided for the telescopic air cylinder 202, so that the telescopic air cylinder 202 can stably provide power for the operation of the device.

[0037] As shown in the Figures 2 to 5 As shown, the inner wall of the slag discharge box 201 is fixedly provided with a frame body 213, the inner wall of the frame body 213 is in sliding connection with the outer wall of the hammer plate 208, and the outer wall of the slag discharge box 201 is fixedly provided with a guide plate 214; when the hammer plate 208 moves outwardly of the slag discharge box 201, the hammer head 2084 enters the inner side of the frame body 213, through the arrangement of the frame body 213, the hammer head 2084 has a certain distance from the mud block when the hammer head 2084 moves to the mud block for knocking, so that the mud block can be effectively crushed.

[0038] As shown in the Figures 5 to 6 As shown, the outer wall of the pushing tooth plate 302 is provided with a sliding groove 308, the outer wall of the supporting frame 309 is fixedly provided on the outer wall of the slag discharge box 201, and the outer wall of the supporting frame 309 is in sliding connection with the inner wall of the sliding groove 308; through the cooperation of the sliding groove 308 and the supporting frame 309, the pushing tooth plate 302 is supported and limited, so that the pushing tooth plate 302 can stably cooperate with the oscillating gear 205, and reciprocating motion is realized.

[0039] As shown in the Figures 5 to 6 As shown, the two ends of the driving rod 301 are fixedly provided with sliding blocks 310, the outer walls of the sliding blocks 310 are in sliding connection with the inner wall of the slag discharge box 201, and the outer wall of the rolling shaft 304 is in rotary connection with the inner wall of the slag discharge box 201; the driving rod 301 is limited through the sliding blocks 310, so that the driving rod 301 can stably move, the rolling shaft 304 is connected with the slag discharge box 201, the rolling shaft 304 is positioned, and the stirring shaft 307 is located on the inner side of the slag discharge box 201 to perform the soil loosening work.

[0040] As shown in the Figure 1As shown, the inner wall of the cutter head body 1 is rotatably installed with a plurality of center knives 4, positive knives 5 and edge knives 6, and a plurality of water injection holes 7 are formed in the inner wall of the cutter head body 1; when the cutter head body 1 rotates, the center knives 4, the positive knives 5 and the edge knives 6 will be pressed on the rock surface under the action of the thrust, and with the rotation of the cutter head, the knives will produce a comprehensive effect of extrusion, shearing and tensile cracking on the rock, thereby breaking the rock, and the high-pressure water mist sprayed through the water injection holes 7 can effectively reduce the dust concentration in the air, improve the construction environment and protect the health of the construction personnel.

[0041] Working principle: after the device is installed, the device is started to make the cutter head body 1 rotate, and the center knives 4, the positive knives 5 and the edge knives 6 perform tunnel excavation work when the cutter head body 1 rotates, the excavated soil will enter the inside of the slag discharging box 201, and the soil will be conveyed through the conveying channel in the slag discharging box 201 after entering the slag discharging box 201, and the telescopic air cylinder 202 will drive the driving toothed plate 203 to reciprocate when conveying, the driving toothed plate 203 will drive the swing gear 205 to reciprocate when moving, and the hammer plate 208 will swing, and the hammer plate 208 will extend to the inside of the slag discharging box 201 when swinging, so as to knock the mud block that may be stuck in the inside of the slag discharging box 201, and the hammer head 2084 will knock the mud block when the hammer plate 208 knocks, and the hammer head 2084 is extruded to make the elastic member 2083 contract when the hammer head 2084 contacts the mud block, so as to buffer, and the swing gear 205 will drive the pushing toothed plate 302 to reciprocate when knocking, the pushing toothed plate 302 will move when moving, the sliding toothed plate 303 will reciprocate through the rotating gear 305, so as to make the material pushing shaft 307 rotate.

[0042] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A dual-mode TBM cutter head structure, comprising a cutter head body (1), characterized in that: It also includes several crushing structures (2), each crushing structure (2) including a slag discharge box (201), the slag discharge box (201) being fixedly installed on the inner wall of the cutter body (1), a telescopic cylinder (202) being provided on one side of the slag discharge box (201), a drive gear plate (203) being fixedly installed on the output shaft of the telescopic cylinder (202), a rotating shaft (204) being symmetrically arranged on one side of the slag discharge box (201), a swing gear (205) being fixedly installed on the outer wall of the rotating shaft (204), the teeth of the swing gear (205) meshing with the teeth of the drive gear plate (203), a swing plate (206) being symmetrically fixedly installed on the outer wall of the rotating shaft (204), a horizontal plate (207) being fixedly installed between the outer walls of the swing plates (206), and several hammer plates (208) being fixedly installed on the outer wall of the horizontal plate (207). It also includes an anti-blocking structure (3), the interior of which includes a drive rod (301), the drive rod (301) is slidably installed on the inner wall of the slag discharge box (201), the outer wall of the drive rod (301) is fixedly installed with a push tooth plate (302), the teeth of the push tooth plate (302) mesh with the teeth of the swing gear (205), the outer wall of the drive rod (301) is fixedly installed with a number of sliding tooth plates (303), each of the sliding tooth plates (303) is provided with a roller (304) on one side, the outer wall of the roller (304) is fixedly installed with a rotating gear (305), the teeth of the rotating gear (305) mesh with the teeth of the sliding tooth plate (303), one end of the roller (304) is fixedly installed with a circular plate (306), the outer wall of the circular plate (306) is fixedly installed with a number of material feeding shafts (307).

2. The dual-mode TBM cutter head structure according to claim 1, characterized in that: A buffer plate (2081) is slidably installed on the inner wall of the hammer plate (208). A telescopic column (2082) and an elastic element (2083) are fixedly installed between the outer wall of the buffer plate (2081) and the inner wall of the hammer plate (208). The elastic element (2083) is sleeved on the outside of the telescopic column (2082). A hammer head (2084) is fixedly installed on the outer wall of the buffer plate (2081).

3. The dual-mode TBM cutter head structure according to claim 1, characterized in that: The outer wall of the slag discharge box (201) is fixedly installed with two sets of positioning plates (209), and each set of positioning plates (209) has two plates. The two rotating shafts (204) are respectively rotatably installed on the inner wall of each set of positioning plates (209).

4. The dual-mode TBM cutter head structure according to claim 1, characterized in that: The outer wall of the drive tooth plate (203) is symmetrically provided with limiting grooves (210), and the outer wall of the slag discharge box (201) is symmetrically fixedly installed with limiting frames (211). The outer walls of the two limiting frames (211) are slidably connected to the inner walls of the two limiting grooves (210).

5. A dual-mode TBM cutter head structure according to claim 1, characterized in that: The outer wall of the slag discharge box (201) is fixedly installed with an installation plate (212), and the telescopic cylinder (202) is fixedly installed on the inner side of the installation plate (212).

6. The dual-mode TBM cutter head structure according to claim 1, characterized in that: The inner wall of the slag discharge box (201) is fixedly installed with a frame (213), the inner wall of the frame (213) is slidably connected to the outer wall of the hammer plate (208), and the outer wall of the slag discharge box (201) is fixedly installed with a guide plate (214).

7. The dual-mode TBM cutter head structure according to claim 1, characterized in that: The outer wall of the push tooth plate (302) is provided with a sliding groove (308), and the outer wall of the slag discharge box (201) is fixedly installed with a support frame (309). The outer wall of the support frame (309) and the inner wall of the sliding groove (308) are slidably connected.

8. The dual-mode TBM cutter head structure according to claim 1, characterized in that: Both ends of the drive rod (301) are fixedly installed with sliders (310). The outer wall of the slider (310) is slidably connected to the inner wall of the slag discharge box (201), and the outer wall of the roller (304) is rotatably connected to the inner wall of the slag discharge box (201).

9. A dual-mode TBM cutter head structure according to claim 1, characterized in that: The inner wall of the cutter head body (1) is rotatably equipped with several center cutters (4), forward cutters (5) and side cutters (6), and the inner wall of the cutter head body (1) is provided with several water spray holes (7).

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