Crusher and heading machine comprising same

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a crusher and a heading machine comprising the same, and the crusher comprises a feeding cabin, a crushing mechanism and a discharging cabin which are connected in sequence; the crushing mechanism comprises a first-stage crushing mechanism and a second-stage crushing mechanism which are connected in sequence, the first-stage crushing mechanism is connected with the feeding cabin, and the second-stage crushing mechanism is connected with the discharging cabin; the secondary crushing mechanism comprises at least two groups of single-tooth roller structures, and a flow guide block is arranged above a channel between the two groups of single-tooth roller structures; and a discharging hole of the discharging cabin is connected with a discharging and slurry discharging pipe. According to the crusher provided by the utility model, coarse crushing is carried out on large-particle-size slag stones through the first-stage crushing mechanism, fine crushing is carried out through the second-stage crushing mechanism, and two-stage crushing operation is carried out, so that the requirement of a special stratum which contains a large number of large boulders and is rich in sandy cobbles on the particle size of the crushed slag stones is met, and stagnant discharge is avoided; at least two groups of single-tooth roller structures are adopted to crush slag stones and sundries, so that the crushing efficiency is high, and the requirement of the shield tunneling machine on the tunneling efficiency is met.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically to a crusher and a tunneling machine containing the same. Background Technology

[0002] Currently, with the large-scale construction of tunnels both domestically and internationally, tunnel boring machines (TBMs) have become the preferred choice. Slurry balance TBMs, with their excellent pressure control performance, are widely used in tunnel projects involving crossing rivers and seas, as well as those with high requirements for settlement. Air-cushion slurry balance TBMs typically have a clamp-type crusher installed inside the air cushion chamber. This results in low crushing efficiency and limited capacity. For water-rich sand and gravel strata, the clamp-type crusher cannot meet the tunneling speed of the slurry TBM, easily causing stagnation and directly limiting its tunneling efficiency. Furthermore, the clamp-type crusher, installed inside the air cushion chamber, has a high failure rate and is difficult to maintain. Therefore, configuring an external crusher for secondary crushing of sand and gravel is the most effective method to improve the tunneling efficiency of slurry shield tunneling.

[0003] Secondary crushers for slurry shield tunneling machines include jaw crushers driven by belt pulleys, which have high crushing efficiency but high vibration, are prone to clogging, and are difficult to clean; single-tooth roller crushers have a small crushing ratio and low efficiency; and double-tooth roller crushers have a moderate crushing ratio and moderate capacity, but cannot meet the crushing needs of special strata rich in sand and gravel containing a large number of large boulders.

[0004] In summary, there is an urgent need to provide a crusher and a tunneling machine containing the same to solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of this utility model is to provide a crusher and a tunneling machine containing the same, the specific technical solution of which is as follows:

[0006] A crusher includes a feed hopper, a crushing mechanism, and a discharge hopper connected in sequence.

[0007] The crushing mechanism includes a primary crushing mechanism and a secondary crushing mechanism connected in sequence. The primary crushing mechanism is connected to the feed hopper, and the secondary crushing mechanism is connected to the discharge hopper.

[0008] The secondary crushing mechanism includes at least two sets of single-tooth roller structures, and a guide block is provided above the channel between the two sets of single-tooth roller structures.

[0009] The discharge port of the discharge chamber is connected to the discharge slurry pipe.

[0010] Furthermore, the feeding chamber includes a feeding chamber body, the feeding port of the feeding chamber body is provided with a feeding port connecting flange; a slurry sampling port is provided on the side wall of the feeding chamber body, and a slurry sampling port connecting flange is provided on the slurry sampling port; the feeding chamber body is also provided with an inspection port, and an inspection door is provided at the inspection port.

[0011] Furthermore, the primary crushing mechanism includes a double-toothed roller structure and a primary crushing box, wherein the double-toothed roller structure is disposed inside the primary crushing box;

[0012] The double-toothed roller structure includes two primary crushing rollers that rotate in opposite directions, and multiple crushing roller teeth are offset along their axial direction on the outer wall of the primary crushing rollers.

[0013] Furthermore, the two ends of the primary crushing toothed roller are rotatably connected to the primary crushing box via bearings, and bearing seats for fixing the bearings are installed on the two opposite sides of the primary crushing box.

[0014] One end of the primary crushing toothed roller is connected to a drive mechanism for driving the primary crushing toothed roller to rotate via a connecting sleeve.

[0015] Furthermore, the secondary crushing mechanism also includes a secondary crushing box, and the single-tooth roller structure and the guide block are both disposed inside the secondary crushing box;

[0016] The single-toothed roller structure includes a two-stage crushing toothed roller, and multiple crushing roller teeth are staggered along its axial direction on the outer wall of the two-stage crushing toothed roller.

[0017] The inner wall of the secondary crushing box is provided with a fixed blade component, which cooperates with the single toothed roller structure to crush slag and debris;

[0018] An adjusting component for adjusting the extension length of the fixed blade component is also provided between the fixed blade component and the inner wall of the secondary crushing box.

[0019] Furthermore, the two ends of the secondary crushing toothed roller are rotatably connected to the secondary crushing box via bearings, and bearing seats for fixing the bearings are installed on the two opposite sides of the secondary crushing box.

[0020] One end of the secondary crushing toothed roller is connected to a drive mechanism two for driving the secondary crushing toothed roller to rotate via a connecting sleeve two.

[0021] Furthermore, the discharge chamber includes a collection box, the inlet of which is connected to the outlet of the secondary crushing mechanism; the collection box is also provided with a flushing port, which is provided with a flushing port connecting flange; the outlet of the collection box is connected to a discharge slurry pipe, and the outlet of the collection box is provided with an outlet connecting flange.

[0022] Furthermore, the connection surfaces between the feed hopper and the primary crushing mechanism, the primary crushing mechanism and the secondary crushing mechanism, and the secondary crushing mechanism and the discharge hopper are all equipped with sealing components.

[0023] Furthermore, flat pads are installed on the connection surfaces of the feed hopper and the primary crushing mechanism, the primary crushing mechanism and the secondary crushing mechanism, and the secondary crushing mechanism and the discharge hopper.

[0024] A tunneling machine includes a crusher as described above, wherein the input end of the crusher is connected to the slurry discharge pipeline of the tunneling machine's circulation system, and the output end of the crusher is connected to the discharge slurry pipe.

[0025] The application of the technical solution of this utility model has the following beneficial effects:

[0026] (1) This utility model provides a crusher, including a feeding hopper, a crushing mechanism, and a discharge hopper connected in sequence; the crushing mechanism includes a primary crushing mechanism and a secondary crushing mechanism connected in sequence, the primary crushing mechanism being connected to the feeding hopper, and the secondary crushing mechanism being connected to the discharge hopper; the secondary crushing mechanism includes at least two sets of single-tooth roller structures, and a guide block is provided above the channel between the two sets of single-tooth roller structures; the discharge port of the discharge hopper is connected to the discharge slurry pipe. The crusher provided by this utility model coarsely crushes large-diameter slag and finely crushes it through the primary crushing mechanism and the secondary crushing mechanism. Through two-stage crushing operations, it meets the requirements of special strata rich in sand and gravel containing a large number of large boulders for the particle size of crushed slag and avoids stagnation. In addition, the use of at least two sets of single-tooth roller structures to crush slag and debris results in high crushing efficiency, meeting the tunneling efficiency requirements of tunnel boring machines.

[0027] (2) In this utility model, a guide block is provided above the channel between the two sets of single-tooth roller structures to divert the slag and debris after being crushed by the primary crushing mechanism; the two sides of the guide block are inclined to better achieve the guiding effect and reduce impact; the bottom surface of the guide block is flat and the bottom surface of the guide block blocks the channel between the two sets of single-tooth roller structures to prevent slag and debris from entering the secondary crushing box from the channel between the two sets of single-tooth roller structures.

[0028] (3) In this utility model, an adjustment component for adjusting the extension length of the fixed blade component is also provided between the fixed blade component and the inner wall of the secondary crushing box. The adjustment component is an adjustment pad. The extension length of the fixed blade component is adjusted by adjusting the number of adjustment pads or the thickness of the adjustment pads, so as to control the particle size of the crushed slag after secondary crushing.

[0029] (4) In this utility model, the connection surface between the feed chamber and the primary crushing mechanism, the connection surface between the primary crushing mechanism and the secondary crushing mechanism, and the connection surface between the secondary crushing mechanism and the discharge chamber are all provided with sealing components. The sealing components are used to seal each connection surface and ensure the pressure bearing capacity of the crusher.

[0030] (5) This utility model provides a tunneling machine, including the crusher as described above. The input end of the crusher is connected to the slurry discharge pipe of the tunneling machine circulation system, and the output end of the crusher is connected to the discharge slurry pipe. By using this double-stage crusher, the problem of stagnation in special strata of water-rich sand and gravel containing a large number of large boulders in engineering is solved, the application range of the tunneling machine is broadened, and the tunneling efficiency is improved.

[0031] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0032] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0033] Figure 1 This is a schematic diagram of the overall structure of the crusher in this embodiment of the utility model;

[0034] Figure 2 yes Figure 1 A schematic diagram of the AA cross-section;

[0035] Figure 3 This is a structural diagram of the feed compartment;

[0036] Figure 4 This is the front view of the primary crushing mechanism;

[0037] Figure 5 This is a top view of the primary crushing mechanism;

[0038] Figure 6 This is the front view of the secondary crushing mechanism;

[0039] Figure 7 This is a top view of the secondary crushing mechanism;

[0040] Figure 8 This is a structural diagram of the discharge chamber;

[0041] Figure 9 This is a schematic diagram of crushing slag and stone using the crusher of this utility model;

[0042] The components include: 1. Feed hopper; 1.1 Feed hopper body; 1.2 Feed inlet connecting flange; 1.3 Slurry outlet connecting flange; 1.4 Inspection door panel; 2. Primary crushing mechanism; 2.1 Double toothed roller structure; 2.1.1 Primary crushing toothed roller one; 2.1.2 Primary crushing toothed roller two; 2.2 Primary crushing box; 2.3 Bearing seat one; 2.4 Connecting sleeve one; 2.5 Drive mechanism one; 3. Secondary crushing mechanism. 3.1 Single-toothed roller structure; 3.1.1 Secondary crushing toothed roller one; 3.1.2 Secondary crushing toothed roller two; 3.2 Guide block; 3.3 Secondary crushing box; 3.4 Fixed blade assembly; 3.5 Adjusting component; 3.6 Bearing seat two; 3.7 Connecting sleeve two; 3.8 Drive mechanism two; 4. Discharge chamber; 4.1 Collection box; 4.2 Flushing port connecting flange; 4.3 Discharge port connecting flange; 5. Sealing assembly. Detailed Implementation

[0043] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered.

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0046] Example

[0047] See Figure 1 This embodiment provides a crusher, including a feed hopper 1, a crushing mechanism and a discharge hopper 4 connected in sequence. The crushing mechanism includes a primary crushing mechanism 2 and a secondary crushing mechanism 3 connected in sequence.

[0048] See Figure 3The feed chamber 1 includes a feed chamber body 1.1. The feed inlet of the feed chamber body 1.1 is provided with a feed inlet connecting flange 1.2. The feed inlet connecting flange 1.2 is connected to the slurry discharge pipeline of the tunneling machine by bolts so that the slag, mud and debris generated by the cutterhead crushing can flow into the feed chamber body 1.1.

[0049] See Figure 1 and Figure 2 The feed chamber 1.1 is fixed to the primary crushing mechanism 2 by bolts. Preferably, a flat pad is provided between the connection surface of the feed chamber 1.1 and the primary crushing mechanism 2, and the discharge port of the feed chamber 1.1 is connected to the feed port of the primary crushing mechanism 2.

[0050] In this embodiment, see Figure 5 A sealing assembly 5 is provided at the connection between the feed chamber 1.1 and the primary crushing mechanism 2 to ensure a tight seal at the connection and meet the requirements for withstanding slurry pressure. Preferably, the sealing assembly 5 is an O-ring seal, which is installed on the primary crushing mechanism 2.

[0051] See Figure 2 and Figure 3 The feed chamber 1.1 has two slurry inlets on its side wall, and each slurry inlet is equipped with a slurry inlet connecting flange 1.3. The feed chamber 1.1 also has an inspection port, and an inspection door plate 1.4 is bolted to the inspection port. A flat pad is provided between the inspection door plate 1.4 and the feed chamber 1.1. The crusher can be accessed through the inspection port by removing the inspection door plate 1.4, which facilitates quick maintenance of the crusher.

[0052] See Figure 2 , Figure 4 and Figure 5 The primary crushing mechanism 2 is fixedly connected to the secondary crushing mechanism 3 by bolts. Preferably, a flat pad is provided between the connecting surfaces of the primary crushing mechanism 2 and the secondary crushing mechanism 3. The discharge port of the primary crushing mechanism 2 is connected to the feed port of the secondary crushing mechanism 3.

[0053] The primary crushing mechanism 2 includes a double-toothed roller structure 2.1 and a primary crushing box 2.2. The double-toothed roller structure 2.1 is disposed inside the primary crushing box 2.2. The double-toothed roller structure 2.1 includes two primary crushing toothed rollers that rotate in opposite directions, namely primary crushing toothed roller one 2.1.1 and primary crushing toothed roller two 2.1.2. Multiple crushing roller teeth are staggered along their axial direction on the outer wall of primary crushing toothed roller one 2.1.1 and primary crushing toothed roller two 2.1.2.

[0054] See Figure 2In this embodiment, the first-stage crushing toothed roller 2.1.1 rotates clockwise, and the second-stage crushing toothed roller 2.1.2 rotates counterclockwise. The first-stage crushing toothed roller 2.1.1 and the second-stage crushing toothed roller 2.1.2 rotate towards each other to crush the large slag and debris that enter the first-stage crushing box 2.2 from the feed chamber 1.

[0055] See Figure 4 and Figure 5 In this embodiment, the two ends of the primary crushing toothed roller are rotatably connected to the primary crushing box 2.2 via bearings. Bearing seats 2.3 for fixing the bearings are installed on two opposite sides of the primary crushing box 2.2. One end of the primary crushing toothed roller is connected to a drive mechanism 2.5 for driving the primary crushing toothed roller to rotate via a connecting sleeve 2.4. Specifically, one end of the connecting sleeve 2.4 is connected to the primary crushing toothed roller, and the other end is connected to the drive mechanism 2.5, which plays a role in torque transmission. The drive mechanism 2.5 is mounted on the primary crushing box 2.2 via a mounting bracket.

[0056] In this embodiment, a sealing component 5 is provided at the connection between the primary crushing mechanism 2 and the secondary crushing mechanism 3 to ensure a seal at the connection. (See also...) Figure 7 In this embodiment, the sealing component 5 is installed on the secondary crushing mechanism 3.

[0057] See Figure 2 , Figure 6 and Figure 7 The secondary crushing mechanism 3 is fixedly connected to the discharge chamber 4 by bolts. Preferably, a flat pad is provided between the connecting surfaces of the secondary crushing mechanism 3 and the discharge chamber 4. The discharge port of the secondary crushing mechanism 3 is connected to the inlet of the discharge chamber 4.

[0058] The secondary crushing mechanism 3 includes at least two sets of single-tooth roller structures 3.1, and a guide block 3.2 is provided above the channel between the two sets of single-tooth roller structures 3.1. The secondary crushing mechanism 3 also includes a secondary crushing box 3.3, and the single-tooth roller structures 3.1 and the guide block 3.2 are both disposed in the secondary crushing box 3.3. In this embodiment, the guide block 3.2 is bolted or welded to the secondary crushing box 3.3 and is used to divert the slag and debris after being crushed by the primary crushing mechanism 2. Preferably, the two sides of the guide block 3.2 are inclined surfaces, which can better achieve the guiding effect and reduce impact. The bottom surface of the guide block 3.2 is flat, and the bottom surface of the guide block 3.2 blocks the channel between the two sets of single-tooth roller structures 3.1 to prevent slag and debris from entering the secondary crushing box 3.3 from the channel between the two sets of single-tooth roller structures 3.1.

[0059] In this embodiment, the single-toothed roller structure 3.1 includes a secondary crushing roller, and multiple crushing roller teeth are staggered along its axial direction on the outer wall of the secondary crushing roller; this embodiment takes two sets of single-toothed roller structures 3.1 as an example, see [link to example]. Figure 2 and Figure 7 The two components are a first secondary crushing toothed roller (3.1.1) and a second secondary crushing toothed roller (3.1.2). The first secondary crushing toothed roller (3.1.1) rotates counterclockwise, and the second secondary crushing toothed roller (3.1.2) rotates clockwise.

[0060] See Figure 2 and Figure 6 The inner wall of the secondary crushing box 3.3 is provided with fixed blade components 3.4. There are two sets of fixed blade components 3.4, namely fixed blade component one and fixed blade component two. Fixed blade component one cooperates with secondary crushing toothed roller one 3.1.1, and fixed blade component two cooperates with secondary crushing toothed roller two 3.1.2, which are used to crush the slag and debris entering the secondary crushing box 3.3.

[0061] In this embodiment, an adjusting member 3.5 for adjusting the extension length of the fixed blade component 3.4 is also provided between the fixed blade component 3.4 and the inner wall of the secondary crushing box 3.3. The adjusting member 3.5 is an adjusting pad. By adjusting the number or thickness of the adjusting pad, the extension length of the fixed blade component 3.4 is adjusted to control the particle size of the crushed slag after secondary crushing.

[0062] In this embodiment, the fixed blade component 3.4 includes a mounting plate and a crushing blade disposed on the mounting plate. The mounting plate is fixedly connected to the inner wall of the secondary crushing box 3.3 by bolts.

[0063] See Figure 6 and Figure 7 The two ends of the secondary crushing toothed roller are rotatably connected to the secondary crushing box 3.3 via bearings. Bearing seats 3.6 for fixing the bearings are installed on two opposite sides of the secondary crushing box 3.3. One end of the secondary crushing toothed roller is connected to a drive mechanism 3.8 for driving the secondary crushing toothed roller to rotate via a connecting sleeve 3.7. Specifically, one end of the connecting sleeve 3.7 is connected to the secondary crushing toothed roller, and the other end is connected to the drive mechanism 3.8, which plays a role in torque transmission. The drive mechanism 3.8 is mounted on the secondary crushing box 3.3 via a mounting bracket.

[0064] In this embodiment, a sealing component 5 is provided at the connection between the secondary crushing mechanism 3 and the discharge chamber 4 to ensure the sealing of the connection between the secondary crushing mechanism 3 and the discharge chamber 4.

[0065] In this embodiment, the drive mechanism 2.5 and drive mechanism 3.8 can be driven by a hydraulic motor directly, a hydraulic motor + reducer, or a motor + reducer.

[0066] See Figure 8 The discharge chamber 4 includes a collection box 4.1, the inlet of which is connected to the outlet of the secondary crushing mechanism 3. It is used to collect crushed slag, slurry, and debris. The collection box 4.1 is welded to the rear trolley of the tunneling machine via a base plate, which can support the secondary crushing mechanism 3 and provide crushing reaction force. The collection box 4.1 is also equipped with a flushing port, which is equipped with a flushing port connecting flange 4.2. When slag or other materials block the flow, high-pressure water can be connected for flushing. The outlet of the collection box 4.1 is connected to the discharge slurry pipe via the discharge port connecting flange 4.3. Under the action of the slurry pump, the crushed slag, slurry, and debris are discharged through the discharge slurry pipe.

[0067] In specific tasks, such as Figure 9 As shown, the slag, slurry, and debris produced after the first crushing by the cutterhead enter the primary crushing mechanism 2 through the feed hopper 1. The primary crushing toothed rollers 2.1.1 and 2.1.2 rotate in opposite directions to perform secondary coarse crushing on the slag and debris. The coarsely crushed slag, slurry, and debris are then guided through the guide block 3.2 into two single-tooth roller structures on the left and right. The left single-tooth roller structure, through the counterclockwise rotation of the secondary crushing toothed roller 3.1.1 and its cooperation with the fixed cutter component 1, performs a third fine crushing on the slag and debris. The right single-tooth roller structure, through the clockwise rotation of the secondary crushing toothed roller 3.1.2 and its cooperation with the fixed cutter component 2, performs a third fine crushing on the slag and debris. The finely crushed slag, slurry, and debris are collected through the discharge hopper 4 and discharged from the discharge pipe by the suction of the slurry pump.

[0068] The crusher provided by this utility model coarsely crushes large-diameter slag and stone through a primary crushing mechanism and finely crushes it through a secondary crushing mechanism. Through two-stage crushing operations, it meets the requirements of special strata rich in sand and gravel containing a large number of large boulders for the particle size of the crushed slag and stone, avoiding stagnation. In addition, it adopts two sets of single-tooth roller structures and fixed cutter components to crush slag and debris, resulting in high crushing efficiency and meeting the tunneling machine's requirements for tunneling efficiency.

[0069] This utility model also provides a tunneling machine, including the crusher as described above. The input end of the crusher is connected to the slurry discharge pipe of the tunneling machine's circulation system, and the output end is connected to the discharge slurry pipe. By using this double-stage crusher, the problem of stagnation in special strata containing a large number of large boulders and water-rich sand and gravel is solved, the application range of the tunneling machine is broadened, and the tunneling efficiency is improved.

[0070] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A crusher, characterized in that, It includes a feed hopper (1), a crushing mechanism and a discharge hopper (4) connected in sequence; The crushing mechanism includes a primary crushing mechanism (2) and a secondary crushing mechanism (3) connected in sequence. The primary crushing mechanism (2) is connected to the feed hopper (1), and the secondary crushing mechanism (3) is connected to the discharge hopper (4). The secondary crushing mechanism (3) includes at least two sets of single-tooth roller structures (3.1), and a guide block (3.2) is provided above the channel between the two sets of single-tooth roller structures (3.1); The discharge port of the discharge chamber (4) is connected to the discharge slurry pipe.

2. The crusher according to claim 1, characterized in that, The feeding chamber (1) includes a feeding chamber body (1.1), the feeding port of the feeding chamber body (1.1) is provided with a feeding port connecting flange (1.2); a slurry sampling port is provided on the side wall of the feeding chamber body (1.1), and a slurry sampling port connecting flange (1.3) is provided on the slurry sampling port; an inspection port is also provided on the feeding chamber body (1.1), and an inspection door panel (1.4) is provided at the inspection port.

3. The crusher according to claim 1, characterized in that, The primary crushing mechanism (2) includes a double-toothed roller structure (2.1) and a primary crushing box (2.2), wherein the double-toothed roller structure (2.1) is disposed inside the primary crushing box (2.2); The double-toothed roller structure (2.1) includes two primary crushing toothed rollers that rotate in opposite directions, and multiple crushing roller teeth are provided on the outer wall of the primary crushing toothed rollers along their axial direction.

4. The crusher according to claim 3, characterized in that, The two ends of the primary crushing toothed roller are rotatably connected to the primary crushing box (2.2) via bearings. Bearing seats (2.3) for fixing the bearings are installed on the two opposite sides of the primary crushing box (2.2). One end of the primary crushing toothed roller is connected to a drive mechanism (2.5) for driving the primary crushing toothed roller to rotate via a connecting sleeve (2.4).

5. The crusher according to claim 1, characterized in that, The secondary crushing mechanism (3) also includes a secondary crushing box (3.3), and the single-tooth roller structure (3.1) and the guide block (3.2) are both disposed inside the secondary crushing box (3.3); The single-tooth roller structure (3.1) includes a secondary crushing tooth roller, and multiple crushing roller teeth are staggered along its axial direction on the outer wall of the secondary crushing tooth roller; The inner wall of the secondary crushing box (3.3) is provided with a fixed blade component (3.4), which cooperates with the single toothed roller structure (3.1) to crush slag and debris; An adjusting component (3.5) for adjusting the extension length of the fixed blade component (3.4) is also provided between the fixed blade component (3.4) and the inner wall of the secondary crushing box (3.3).

6. The crusher according to claim 5, characterized in that, The two ends of the secondary crushing toothed roller are rotatably connected to the secondary crushing box (3.3) via bearings, and bearing seats (3.6) for fixing the bearings are installed on the two opposite sides of the secondary crushing box (3.3); One end of the secondary crushing toothed roller is connected to a drive mechanism (3.8) for driving the secondary crushing toothed roller to rotate via a connecting sleeve (3.7).

7. The crusher according to claim 1, characterized in that, The discharge chamber (4) includes a collection box (4.1), the inlet of which is connected to the outlet of the secondary crushing mechanism (3); the collection box (4.1) is also provided with a flushing port, and the flushing port is provided with a flushing port connecting flange (4.2); the outlet of the collection box (4.1) is connected to the discharge slurry pipe, and the outlet of the collection box (4.1) is provided with an outlet connecting flange (4.3).

8. The crusher according to any one of claims 1-7, characterized in that, The connection surfaces of the feed chamber (1) and the primary crushing mechanism (2), the connection surfaces of the primary crushing mechanism (2) and the secondary crushing mechanism (3), and the connection surfaces of the secondary crushing mechanism (3) and the discharge chamber (4) are all provided with sealing components (5).

9. The crusher according to any one of claims 1-7, characterized in that, Flat pads are installed on the connection surfaces of the feed chamber (1) and the primary crushing mechanism (2), the primary crushing mechanism (2) and the secondary crushing mechanism (3), and the secondary crushing mechanism (3) and the discharge chamber (4).

10. A tunneling machine, characterized in that, Includes the crusher as described in claim 8 or 9, wherein the input end of the crusher is connected to the slurry discharge pipeline of the tunneling machine circulation system, and the output end of the crusher is connected to the discharge slurry pipe.

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