Anti-blocking cutter head of pipe jacking machine
By integrating an anti-sticking mechanism and a movable drive mechanism into the cutterhead of the pipe jacking machine, the problem of clogging caused by clay adhesion is solved, achieving efficient construction and equipment adaptability, extending equipment life, and reducing energy consumption and maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANDONG JUDING CONSTRUCTION CO LTD
- Filing Date
- 2026-05-13
- Publication Date
- 2026-06-12
AI Technical Summary
When existing pipe jacking machines are used in clay strata, clay tends to adhere to the cutterhead panel, cutters, and inner wall of the soil chamber, causing the slag discharge structure to be blocked, which affects construction efficiency and equipment lifespan.
Design a cutter disc for an anti-clogging pipe jacking machine, comprising a crushing mechanism, a rotary drive mechanism, an anti-clogging mechanism, and a movable drive mechanism. The anti-clogging mechanism is slidably inserted into the slag discharge structure and performs reciprocating, rotating, or scraping motions under the drive of the movable drive mechanism to peel off the adhering clay and adjust the slag discharge area to adapt to different geological conditions.
It effectively prevents clay blockage, improves construction efficiency, reduces equipment energy consumption, extends tool life, adapts to various geological conditions, requires no frequent downtime for maintenance, and has good engineering applicability and intelligent construction capabilities.
Smart Images
Figure CN122190776A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of pipe jacking construction equipment technology, and in particular to a cutterhead for an anti-sticking pipe jacking machine. Background Technology
[0002] A pipe jacking machine is a trenchless construction device used for laying underground pipelines. During operation, it primarily uses a cutterhead at the front to cut through the soil, and then relies on hydraulic jacks at the rear to push prefabricated pipe sections into the ground, thus completing the pipeline laying without disrupting surface traffic, buildings, or existing pipelines. Based on the slag removal method, it is mainly divided into slurry balance type and earth pressure balance type, and is widely used in municipal drainage, power and communication, oil and gas transmission, and road crossing projects. Unlike tunnel boring machines (TBMs) that can assemble tunnel segments, pipe jacking machines directly push in prefabricated pipe sections, making them more suitable for small to medium diameter and short-to-medium distance pipeline construction.
[0003] When using existing pipe jacking machines in clay strata, the cut clay easily adheres to the cutterhead panel, blades, and inner wall of the soil chamber, gradually compacting to form a dense mud layer, which in turn blocks the cutterhead slag discharge structure. Summary of the Invention
[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide an anti-clogging cutter head for a pipe jacking machine, which can prevent clay from sticking to the cutter head slag discharge structure.
[0005] The objective of this invention is achieved through the following technical solution: a cutter disc for an anti-clogging pipe jacking machine, comprising: a mounting body, a crushing mechanism, a rotary drive mechanism, an anti-clogging mechanism, and a movable drive mechanism.
[0006] The mounting body is provided with a receiving cavity;
[0007] The crushing mechanism is located inside the accommodating cavity and is installed on the mounting body; the crushing mechanism is provided with a slag discharge structure, and the two ends of the slag discharge structure are respectively connected to the accommodating cavity and the external environment;
[0008] The rotary drive mechanism is located within the accommodating cavity; the rotary drive mechanism is mounted on the mounting body, and the output end of the rotary drive mechanism is connected to the crushing mechanism.
[0009] The anti-clogging mechanism is slidably inserted into the slag discharge structure; the anti-clogging mechanism is used to remove clay adhering to the slag discharge structure;
[0010] The movable drive mechanism is installed on the crushing mechanism, and the output end of the movable drive mechanism is connected to the anti-clogging mechanism; the movable drive mechanism is used to drive the anti-clogging mechanism to move along the slag discharge structure to adjust the effective slag discharge area of the slag discharge structure.
[0011] Furthermore, the crushing mechanism includes a drive base and a crushing disc connected in sequence; the drive base is located within the accommodating cavity; one of the inner wall of the mounting body and the drive base is provided with a limiting movement structure, and the other is provided with a limiting guide structure, the limiting movement structure being slidably inserted into the limiting guide structure; the output end of the rotary drive mechanism is driven and connected to the drive base; the mounting body has an avoidance opening, the opposite ends of the avoidance opening being connected to the accommodating cavity and the external environment respectively; the crushing disc is located at the avoidance opening; the slag discharge structure is disposed on the side of the crushing disc away from the accommodating cavity; the anti-sticking mechanism and the movable drive mechanism are both disposed on the crushing disc.
[0012] Furthermore, the crushing disc includes a disc base and a scraper assembly; the disc base is disposed on the drive base to rotate with the drive base; the scraper assembly is disposed on the end face of the disc base away from the drive base, and the scraper assembly is used to crush rock strata; the slag discharge structure is disposed on the disc base; and the anti-clogging mechanism is disposed on the disc base.
[0013] Furthermore, the slag discharge structure is provided in multiple ways, including a main slag discharge hole and a secondary slag discharge hole; the scraper assembly is disposed in the main slag discharge hole, and the anti-sticking mechanism is slidably inserted into the secondary slag discharge hole.
[0014] Furthermore, the main slag discharge holes are provided in multiple ways; the scraper assemblies are provided in multiple sets, and the multiple sets of scraper assemblies and the multiple main slag discharge holes are distributed alternately along the radial direction of the cutterhead base.
[0015] Furthermore, the scraper assembly includes a main scraper and a secondary scraper; the main scraper is disposed on one end face of the cutter head base away from the drive base; the secondary scraper is disposed on one end face of the cutter head base away from the drive base; there are two main scrapers, and the two main scrapers and the secondary scraper are staggered along the width direction of the cutter head base.
[0016] Furthermore, the anti-clogging mechanism is an auxiliary blade, one of which, and the secondary slag discharge hole, is provided with a sliding moving structure, and the other is provided with a sliding guiding structure. The sliding moving structure is slidably inserted into the sliding guiding structure. The movable drive mechanism is installed on the cutter head base, and the output end of the movable drive mechanism drives and connects to the auxiliary blade to change the effective slag discharge area of the secondary slag discharge hole.
[0017] Furthermore, the movable drive mechanism includes a connecting plate and a rotary drive motor; the two opposite ends of the connecting plate are respectively hinged to the auxiliary blade and the cutter head base; the rotary drive motor is mounted on the cutter head base, and the output end of the rotary drive motor drives the connecting plate.
[0018] Furthermore, multiple secondary slag discharge holes are provided, and these secondary slag discharge holes are distributed at intervals along the circumference of the cutter head base; multiple auxiliary blades are provided, and each of the auxiliary blades is slidably inserted into a corresponding secondary slag discharge hole; multiple connecting plates are provided, with one end of each connecting plate hinged to the cutter head base and the other end hinged to a corresponding auxiliary blade; multiple movable drive mechanisms are provided, each of the movable drive mechanisms is mounted on the cutter head base, and the output end of each movable drive mechanism drives and connects to a corresponding connecting plate.
[0019] Furthermore, the mounting body is provided with main crushing teeth; the cutterhead base is provided with secondary crushing teeth, the secondary crushing teeth being arranged correspondingly to the main crushing teeth, and the main crushing teeth and the secondary crushing teeth being used to crush the rock debris located in the gap between the mounting body and the cutterhead base.
[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0021] 1. By setting the anti-clogging mechanism to be slidably inserted into the slag discharge structure, and under the drive of the movable drive mechanism to perform reciprocating, rotating or scraping motions on the slag discharge structure, the clay adhering to the inner wall of the slag discharge structure can be peeled off, effectively preventing the clay from gradually accumulating and compacting in the slag discharge structure to form a blockage. At the same time, it avoids the need for frequent shutdowns of traditional pipe jacking machines for manual clearing, significantly increasing the proportion of pure tunneling time, thereby improving construction efficiency.
[0022] 2. By driving the anti-clogging mechanism through the active drive mechanism, the effective slag discharge area of the slag discharge structure can be adjusted. When constructing in clay strata, the slag discharge area can be increased to reduce the resistance of slag and soil passage and prevent blockage. When constructing in sandy or composite strata, the slag discharge area can be reduced to control the slag discharge speed, maintain the soil chamber pressure balance in the accommodating cavity, and prevent strata subsidence or face instability caused by over-discharge or under-discharge. This allows the crushing mechanism to adapt to various strata conditions and cope with geological changes without replacing parts, thereby improving the geological adaptability of the equipment.
[0023] 3. Through the synergistic effect of the anti-clogging mechanism and the movable drive mechanism, the slag cut by the crushing mechanism can be promptly discharged into the receiving cavity through the slag discharge structure, avoiding the accumulation of slag in front of the crushing mechanism to form additional resistance, effectively reducing the torque of the cutter head, reducing the load on the rotary drive mechanism, reducing energy consumption, and also avoiding blade wear caused by blade sticking, extending the service life of the crushing mechanism and the blades, and reducing the maintenance cost of the equipment;
[0024] 4. By integrating the anti-clogging mechanism and the movable drive mechanism onto the crushing mechanism, the limited space around the slag discharge structure is fully utilized without significantly increasing the overall size of the cutterhead. It is not only suitable for upgrading and retrofitting existing pipe jacking equipment, but also the modular arrangement of each mechanism facilitates installation, maintenance and repair, and has good engineering applicability. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the structure of a cutter head for an anti-sticking and plugging pipe jacking machine according to the present invention;
[0026] Figure 2 for Figure 1 The diagram shows the structure of a cutter head for an anti-sticking pipe jacking machine.
[0027] Figure 3 for Figure 1 The image shows a cross-sectional view of the cutter head of an anti-sticking pipe jacking machine;
[0028] Figure 4 for Figure 1 The image shows a cross-sectional view of the cutter head of an anti-sticking pipe jacking machine;
[0029] Figure 5 for Figure 1 A magnified view of a portion at point A shown.
[0030] In the diagram: 1. Mounting body; 11. Receiving cavity; 12. Limiting and guiding structure; 13. Clearance opening; 14. Main crushing teeth; 2. Crushing mechanism; 21. Slag discharge structure; 211. Main slag discharge hole; 212. Secondary slag discharge hole; 22. Drive base; 221. Limiting and moving structure; 23. Crushing disc; 231. Disc base; 2311. Secondary crushing teeth; 232. Scraper assembly; 2321. Main scraper; 2322. Secondary scraper; 3. Anti-sticking mechanism; 31. Movable drive mechanism; 311. Connecting plate. Detailed Implementation
[0031] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0032] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.
[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0034] See Figures 1-4 A preferred embodiment of the present invention provides a cutter disc for an anti-clogging pipe jacking machine, comprising: a mounting body 1, a crushing mechanism 2, a rotary drive mechanism, an anti-clogging mechanism 3, and a movable drive mechanism 31.
[0035] The mounting body 1 is provided with a receiving cavity 11; the crushing mechanism 2 is located in the receiving cavity 11 and is mounted on the mounting body 1; the crushing mechanism 2 is provided with a slag discharge structure 21, the two ends of which are respectively connected to the receiving cavity 11 and the external environment; the rotary drive mechanism is located in the receiving cavity 11; the rotary drive mechanism is mounted on the mounting body 1, and the output end of the rotary drive mechanism drives and connects to the crushing mechanism 2;
[0036] The anti-clogging mechanism 3 is slidably inserted into the slag discharge structure 21; the anti-clogging mechanism 3 is used to remove clay adhering to the slag discharge structure 21; the movable drive mechanism 31 is installed on the crushing mechanism 2, and the output end of the movable drive mechanism 31 drives the anti-clogging mechanism 3; the movable drive mechanism 31 is used to drive the anti-clogging mechanism 3 to move along the slag discharge structure 21 to adjust the effective slag discharge area of the slag discharge structure 21.
[0037] During operation, the output end of the rotary drive mechanism drives the crushing mechanism 2 to rotate. During rotation, the crushing mechanism 2 cuts and breaks up the soil in front, stripping clay and other debris from the strata. The debris, after being cut and broken by the crushing mechanism 2, enters the slag discharge structure 21 inside the crushing mechanism 2. The two ends of the slag discharge structure 21 are connected to the receiving cavity 11 and the external environment, respectively. The debris is transported from the front end of the crushing mechanism 2 to the receiving cavity 11 via the slag discharge structure 21, and then discharged from the receiving cavity 11 to the external environment through an external slag discharge system, completing the slag discharge process. During construction in clay strata, clay easily adheres to the inner wall of the slag discharge structure 21, gradually accumulating and compacting, leading to... The effective slag discharge area of the slag discharge structure 21 is reduced or even completely blocked. When the slag discharge structure 21 is stuck or blocked, the movable drive mechanism 31 drives the anti-sticking and blocking mechanism 3 to reciprocate, rotate or scrape inside or on the surface of the slag discharge structure 21, forcibly peeling off the clay stuck to the inner wall of the slag discharge structure 21 and restoring the unobstructed flow of the slag discharge structure 21. At the same time, the movable drive mechanism 31 adjusts the effective slag discharge area of the slag discharge structure 21 by controlling the movement position of the anti-sticking and blocking mechanism 3: when it is necessary to increase the slag discharge capacity, the anti-sticking and blocking mechanism 3 is driven to move to the position of increasing the opening; when it is necessary to maintain the pressure balance of the soil chamber, the anti-sticking and blocking mechanism 3 is driven to move to the position of decreasing the opening.
[0038] By setting the anti-clogging mechanism 3 to be slidably inserted into the slag discharge structure 21, and under the drive of the movable drive mechanism 31, the slag discharge structure 21 is reciprocated, rotated or scraped, which can peel off the clay adhering to the inner wall of the slag discharge structure 21, effectively preventing the clay from gradually accumulating and compacting in the slag discharge structure 21 to form a blockage. At the same time, it avoids the need for frequent shutdowns of traditional pipe jacking machines for manual clearing, significantly increasing the proportion of pure tunneling time, and thus improving construction efficiency.
[0039] The active drive mechanism 31 drives the anti-clogging mechanism 3 to adjust the effective slag discharge area of the slag discharge structure 21. When working in clay strata, the slag discharge area can be increased to reduce the resistance of slag and soil passage and prevent blockage. When working in sandy or composite strata, the slag discharge area can be reduced to control the slag discharge speed and maintain the soil pressure balance in the accommodating cavity 11. This prevents stratum subsidence or face instability caused by over-discharge or under-discharge, enabling the crushing mechanism 2 to adapt to various stratum conditions and cope with geological changes without replacing parts, thereby improving the geological adaptability of the equipment.
[0040] Through the synergistic effect of the anti-clogging mechanism 3 and the movable drive mechanism 31, the slag cut by the crushing mechanism 2 can be promptly discharged into the receiving cavity 11 through the slag discharge structure 21, avoiding the accumulation of slag in front of the crushing mechanism 2 and forming additional resistance. It also effectively reduces the torque of the cutter head, reduces the load on the rotary drive mechanism, reduces energy consumption, and avoids blade wear caused by blade sticking, thus extending the service life of the crushing mechanism 2 and the blades and reducing the maintenance cost of the equipment.
[0041] By integrating the anti-clogging mechanism 3 and the movable drive mechanism 31 onto the crushing mechanism 2, the limited space around the slag discharge structure 21 is fully utilized without significantly increasing the overall size of the cutterhead. This design is not only suitable for upgrading existing pipe jacking equipment, but the modular arrangement of each mechanism facilitates installation, maintenance, and repair, demonstrating good engineering applicability. Furthermore, the movable drive mechanism 31 can be linked with torque sensors, earth pressure sensors, temperature sensors, and the controller to form a closed-loop control system. When poor slag discharge or signs of impending blockage are detected, the controller automatically activates the anti-clogging mechanism 3 to clean or adjust the slag discharge area, reducing manual judgment and intervention, lowering reliance on operator experience, and providing a reliable hardware execution platform for intelligent pipe jacking construction.
[0042] See Figure 3 and Figure 4Preferably, the crushing mechanism 2 includes a drive base 22 and a crushing disc 23 connected in sequence; the drive base 22 is located within the accommodating cavity 11; one of the inner wall of the mounting body 1 and the drive base 22 is provided with a limiting movement structure 221, and the other is provided with a limiting guide structure 12, the limiting movement structure 221 being slidably inserted into the limiting guide structure 12; the output end of the rotary drive mechanism is driven and connected to the drive base 22; the mounting body 1 has an avoidance opening 13, the opposite ends of the avoidance opening 13 being connected to the accommodating cavity 11 and the external environment respectively; the crushing disc 23 is located in the avoidance opening 13; the slag discharge structure 21 is disposed on the crushing disc 23 away from the accommodating cavity 11. On one side of 1; the anti-sticking mechanism 3 and the movable drive mechanism 31 are both disposed on the crushing disc 23; in this configuration, by setting the limiting movement structure 221 to slide with the limiting guide structure 12, precise guidance and reliable limiting are provided for the rotation of the drive base 22 and the crushing disc 23; and by setting the crushing disc 23 at the clearance opening 13 of the mounting body 1, the crushing disc 23 can be directly exposed to the external environment for cutting operations, while the drive base 22 is protected by the accommodating cavity 11; this structure realizes a reasonable partition between the cutting component and the drive component, which not only ensures the normal operation of the cutting function, but also avoids the drive component from directly contacting the slag and being worn or contaminated, thus improving the reliability of the whole machine.
[0043] See Figure 1 and Figure 2 Preferably, the crushing disc 23 includes a disc base 231 and a scraper assembly 232; the disc base 231 is disposed on the drive base 22 to rotate with the drive base 22; the scraper assembly 232 is disposed on the end face of the disc base 231 away from the drive base 22, and the scraper assembly 232 is used to crush rock strata; the slag discharge structure 21 is disposed on the disc base 231; the anti-sticking mechanism 3 is disposed on the disc base 231; it can be understood that the scraper assembly 232 focuses on crushing and cutting rock strata, and the slag produced by the scraper assembly 232 can enter the slag discharge structure 21 on the surface of the disc base 231, and be cleaned in time by the anti-sticking mechanism 3 disposed on the disc base 231, which shortens the slag transport path and reduces the residence time of slag on the surface of the disc base 231, thereby reducing the risk of clay adhesion and mud cake formation from the source.
[0044] See Figure 2Preferably, the slag discharge structure 21 is provided with multiple slag discharge structures, including a main slag discharge hole 211 and a secondary slag discharge hole 212; the scraper assembly 232 is disposed in the main slag discharge hole 211, and the anti-clogging mechanism 3 is slidably inserted into the secondary slag discharge hole 212; obviously, the scraper assembly 232 is disposed in the main slag discharge hole 211 so that the slag generated by cutting can be quickly discharged through the main slag discharge hole 211; the secondary slag discharge hole 212 serves as an auxiliary slag discharge channel, undertaking the function of discharging excess slag; this graded arrangement effectively disperses the slag discharge load, avoids the risk of blockage caused by excessive flow in a single slag discharge channel, and more importantly, by disposing of the anti-clogging mechanism 3 in the secondary slag discharge hole 212, the secondary slag discharge hole 212 can be maintained in real time, thereby maintaining its effective slag discharge area and preventing the slag discharge channel from clogging.
[0045] See Figure 2 Preferably, multiple main slag discharge holes 211 are provided; multiple sets of scraper assemblies 232 are provided, and the multiple sets of scraper assemblies 232 and multiple main slag discharge holes 211 are distributed alternately along the radial direction of the cutterhead base 231. Obviously, with this arrangement, after each set of scraper assemblies 232 produces slag by cutting the rock strata, it can be quickly discharged through the adjacent main slag discharge hole 211, shortening the lateral movement distance of the slag on the cutterhead surface. From the spatial layout, it reduces the residence time of the slag on the cutterhead panel and reduces the probability of clay adhesion. Secondly, from the center of the cutterhead to the outer edge, each radial position is equipped with a corresponding cutting unit and a slag discharge unit, avoiding local blockage caused by insufficient slag discharge capacity due to large local cutting volume. This ensures that the cutting load and slag discharge load in each area of the cutterhead base 231 maintain a dynamic balance during one rotation, improving the stability of the overall machine operation.
[0046] See Figure 5Preferably, the scraper assembly 232 includes a main scraper 2321 and a secondary scraper 2322; the main scraper 2321 is disposed on the end face of the cutter head base 231 away from the drive base 22; the secondary scraper 2322 is disposed on the end face of the cutter head base 231 away from the drive base 22; there are two main scrapers 2321, and the two main scrapers 2321 and the secondary scraper 2322 are staggered along the width direction of the cutter head base 231; obviously, by setting the scraper assembly 232 as a main scraper 2321 and a secondary scraper 2322, a... The system employs a graded cutting mechanism. The main scraper 2321 undertakes the primary cutting task, performing initial crushing and stripping of the rock strata. The secondary scraper 2322 performs fine finishing and supplementary cutting on the residual soil after being cut by the main scraper 2321. This graded setup makes the cutting process more orderly and efficient, avoiding the problem of rapid wear or uneven cutting caused by excessive load on a single-stage scraper. More importantly, the staggered layout creates natural gaps between adjacent scrapers for slag discharge channels. The slag produced during cutting can quickly move to the main slag discharge hole 211 through these gaps, avoiding the problem of slag discharge channel congestion caused by densely arranged scrapers.
[0047] See Figure 1 and Figure 2 Preferably, the anti-clogging mechanism 3 is an auxiliary blade. One of the auxiliary blade and the secondary slag discharge hole 212 is provided with a sliding moving structure, and the other is provided with a sliding guiding structure. The sliding moving structure is slidably inserted into the sliding guiding structure. The movable drive mechanism 31 is installed on the cutterhead base 231. The output end of the movable drive mechanism 31 drives and connects to the auxiliary blade to change the effective slag discharge area of the secondary slag discharge hole 212. Obviously, by using the auxiliary blade as both the anti-clogging mechanism 3 and the auxiliary cutting tool, the auxiliary blade can rotate with the cutterhead base 231 to participate in cutting during normal tunneling. When cleaning is required, the movable drive mechanism 31 performs telescopic movement to achieve clogging removal.
[0048] See Figure 3 and Figure 4Preferably, the movable drive mechanism 31 includes a connecting plate 311 and a rotary drive motor; the two ends of the connecting plate 311 are respectively hinged to the auxiliary blade and the cutter head base 231; the rotary drive motor is mounted on the cutter head base 231, and the output end of the rotary drive motor drives the connecting plate 311; it can be understood that, depending on the actual use, the rotary drive motor can be selected from components such as a hydraulic motor or an electric motor; more importantly, by setting the connecting plate 311 as a hinged structure, the movable drive mechanism 31 has a large driving force amplification effect; based on the lever principle, by reasonably designing the hinge point position and lever arm length of the connecting plate 311, a large telescopic thrust can be output with a small driving force, so that the auxiliary blade can effectively scrape off the clay adhering to the inner wall of the secondary slag discharge hole 212, and effective cleaning can be achieved even under high viscosity and high strength mud cake conditions.
[0049] See Figure 2 Preferably, multiple secondary slag discharge holes 212 are provided, and the multiple secondary slag discharge holes 212 are distributed at intervals along the circumference of the cutterhead base 231; multiple auxiliary blades are provided, and the multiple auxiliary blades are slidably inserted into the corresponding secondary slag discharge holes 212; multiple connecting plates 311 are provided, one end of each connecting plate 311 is hinged to the cutterhead base 231, and the other end is respectively hinged to the corresponding auxiliary blade; multiple movable drive mechanisms 31 are provided, and each movable drive mechanism 31 is installed on the cutterhead base 231, and the output end of each movable drive mechanism 31 drives and connects to the corresponding connecting plate 311; this configuration can further improve the rock stratum adaptability of the anti-sticking jacking cutterhead, thereby preventing some rock slag generated by rock cutting from sticking to the cutterhead base 231 and affecting operation.
[0050] See Figure 1 and Figure 2 Preferably, the mounting body 1 is provided with main crushing teeth 14; the cutterhead base 231 is provided with secondary crushing teeth 2311, which are correspondingly arranged with the main crushing teeth 14. The main crushing teeth 14 and the secondary crushing teeth 2311 are used to crush the rock debris located in the gap between the mounting body 1 and the cutterhead base 231. Obviously, by setting the main crushing teeth 14 and the secondary crushing teeth 2311, a two-stage crushing mechanism can be formed between the mounting body 1 and the cutterhead base 231. When the cutterhead base 231 rotates relative to the mounting body 1, the main crushing teeth 14 and the secondary crushing teeth 2311 generate relative movement, crushing, grinding the rock debris that enters the gap between the mounting body 1 and the cutterhead base 231, effectively preventing the accumulation and jamming of rock debris in the gap.
[0051] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.
[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.
[0053] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A cutter disc for an anti-sticking and plugging pipe jacking machine, characterized in that, include: Mounting body (1), the mounting body (1) is provided with a receiving cavity (11); The crushing mechanism (2) is located in the accommodating cavity (11) and is installed on the mounting body (1); the crushing mechanism (2) is provided with a slag discharge structure (21), and the two ends of the slag discharge structure (21) are respectively connected to the accommodating cavity (11) and the external environment; A rotary drive mechanism is located within the accommodating cavity (11); the rotary drive mechanism is mounted on the mounting body (1), and the output end of the rotary drive mechanism is connected to the crushing mechanism (2). Anti-clogging mechanism (3), which is slidably inserted into the slag discharge structure (21); the anti-clogging mechanism (3) is used to remove clay adhering to the slag discharge structure (21); An active drive mechanism (31) is installed on the crushing mechanism (2), and the output end of the active drive mechanism (31) is connected to the anti-blocking mechanism (3). The active drive mechanism (31) is used to drive the anti-blocking mechanism (3) to move along the slag discharge structure (21) to adjust the effective slag discharge area of the slag discharge structure (21).
2. The anti-sticking and plugging pipe jacking machine cutter head according to claim 1, characterized in that, The crushing mechanism (2) includes a drive base (22) and a crushing disc (23) connected in sequence; the drive base (22) is located inside the accommodating cavity (11); one of the inner wall of the mounting body (1) and the drive base (22) is provided with a limiting movement structure (221), and the other is provided with a limiting guide structure (12), the limiting movement structure (221) is slidably inserted into the limiting guide structure (12); the output end of the rotary drive mechanism is driven and connected to the drive base (22); the mounting body (1) has an avoidance opening (13), the opposite ends of the avoidance opening (13) are respectively connected to the accommodating cavity (11) and the external environment; the crushing disc (23) is located in the avoidance opening (13); the slag discharge structure (21) is set on the side of the crushing disc (23) away from the accommodating cavity (11); the movable drive mechanism (31) is set on the crushing disc (23).
3. The anti-sticking and plugging pipe jacking machine cutter head according to claim 2, characterized in that, The crushing disc (23) includes a disc base (231) and a scraper assembly (232); the disc base (231) is disposed on the drive base (22) to rotate with the drive base (22); the scraper assembly (232) is disposed on the end face of the disc base (231) away from the drive base (22), and the scraper assembly (232) is used to crush rock strata; the slag discharge structure (21) is disposed on the disc base (231); the anti-sticking mechanism (3) is disposed on the disc base (231).
4. The anti-sticking and plugging pipe jacking machine cutter head according to claim 3, characterized in that, The slag discharge structure (21) is provided in multiple ways, including a main slag discharge hole (211) and a secondary slag discharge hole (212); the scraper assembly (232) is disposed in the main slag discharge hole (211), and the anti-sticking mechanism (3) is slidably inserted into the secondary slag discharge hole (212).
5. The anti-sticking and plugging cutter head of a pipe jacking machine according to claim 4, characterized in that, The main slag discharge holes (211) are provided in multiple ways; the scraper assembly (232) is provided in multiple sets, and the multiple sets of scraper assemblies (232) and the multiple main slag discharge holes (211) are distributed alternately along the radial direction of the cutter head base (231).
6. The anti-sticking and plugging cutter head of a pipe jacking machine according to claim 3, characterized in that, The scraper assembly (232) includes a main scraper (2321) and a secondary scraper (2322); the main scraper (2321) is disposed on the end face of the cutter head base (231) away from the drive base (22); the secondary scraper (2322) is disposed on the end face of the cutter head base (231) away from the drive base (22); there are two main scrapers (2321), and the two main scrapers (2321) and the secondary scraper (2322) are staggered along the width direction of the cutter head base (231).
7. The anti-sticking and plugging pipe jacking machine cutter head according to claim 4, characterized in that, The anti-clogging mechanism (3) is an auxiliary blade. One of the auxiliary blade and the secondary slag discharge hole (212) is provided with a sliding moving structure, and the other is provided with a sliding guide structure. The sliding moving structure is slidably inserted into the sliding guide structure. The movable drive mechanism (31) is installed on the cutter head base (231). The output end of the movable drive mechanism (31) drives the auxiliary blade to change the effective slag discharge area of the secondary slag discharge hole (212).
8. The anti-sticking and plugging pipe jacking machine cutter head according to claim 7, characterized in that, The active drive mechanism (31) includes a connecting plate (311) and a rotary drive motor; the two ends of the connecting plate (311) are respectively hinged to the auxiliary blade and the cutter head base (231); the rotary drive motor is mounted on the cutter head base (231), and the output end of the rotary drive motor drives the connecting plate (311).
9. The anti-sticking and plugging pipe jacking machine cutter head according to claim 8, characterized in that, The secondary slag discharge holes (212) are provided in multiples, and the multiple secondary slag discharge holes (212) are distributed at intervals along the circumference of the cutter head base (231); the auxiliary blades are provided in multiples, and the multiple auxiliary blades are slidably inserted into the corresponding secondary slag discharge holes (212); the connecting plates (311) are provided in multiples, and one end of each connecting plate (311) is hinged to the cutter head base (231), and the other end is respectively hinged to the corresponding auxiliary blade; the movable drive mechanism (31) is provided in multiples, and each movable drive mechanism (31) is installed on the cutter head base (231), and the output end of each movable drive mechanism (31) drives and connects to the corresponding connecting plate (311).
10. The anti-sticking and plugging cutter head of a pipe jacking machine according to claim 3, characterized in that, The mounting body (1) is provided with main crushing teeth (14); the cutterhead base (231) is provided with secondary crushing teeth (2311), the secondary crushing teeth (2311) are arranged correspondingly to the main crushing teeth (14), and the main crushing teeth (14) and the secondary crushing teeth (2311) are used to crush the rock debris located in the gap between the mounting body (1) and the cutterhead base (231).