Earth tunnel excavation equipment

Abstract

The present invention relates to the technical field related to soil excavation equipment, and discloses a soil tunnel excavation equipment, including an excavation device connected to the output end of the milling machine body, the excavation device including a bucket shell and an arc-shaped top cover, one end of the bucket shell is connected to the arc-shaped top cover, the arc-shaped top cover is connected to the bucket shell to form a crushing chamber, and the inside of the crushing chamber is sequentially installed with a conveying roller, a second crushing assembly and a first crushing assembly from the outside to the inside; the present invention can set the second assembly between the fixed plates symmetrical at both ends, and realize lateral reciprocating movement through the drive of a telescopic drive motor. The lateral reciprocating movement promotes the interactive reciprocating meshing and squeezing action between the first crushing plate in the second crushing gear and the second crushing plate located on a partial area of ​​the third assembly, thereby enhancing the crushing effect.

Description

Technical Field

[0001] The present invention belongs to the technical field related to soil excavation equipment, and more specifically, particularly relates to soil tunnel excavation equipment. Background Art

[0002] Milling machines are frequently used in tunnel excavation, especially in complex geological conditions with gravel as the rock type. When milling gravel rock layers, since gravel rock layers are loose sediments composed of sand and gravel of different sizes, their internal structure is uneven and may be mixed with large pieces of stone. However, the soil excavation equipment in the prior art has the following defects:

[0003] 1. In the prior art, milling machines often encounter large rocks during excavation. The edges of large rocks are sharp. When the crawler tracks run over them, they will cause additional wear on the crawler links, crawler shoes, rubber gaskets and other parts. Under long-term operation, these parts may age, crack or even break faster, shortening the service life of the crawler tracks and increasing replacement costs;

[0004] 2. In the existing technology, when the milling machine encounters large stones during the excavation process, the large stones require additional equipment investment, crushing and screening equipment again, and the corresponding energy consumption and maintenance costs. At the same time, the crushed materials also need to be stored, loaded and transported again, which will increase the cost of the entire project;

[0005] 3. In the prior art, the existing milling machine's cutter is usually used for cutting and milling soft materials such as soil, soft rock or concrete, rather than hard stone. When processing large pieces of hard stone, its work efficiency will be greatly reduced, and it may take more time and the effect is not good.

[0006] Therefore, in view of this, the existing structure and defects are studied and improved, and a soil tunnel excavation equipment is provided to achieve a more practical and valuable purpose. Summary of the invention

[0007] The present invention provides an earth tunnel excavation device for overcoming the above-mentioned defects in the prior art.

[0008] The purpose and effect of the soil tunnel excavation equipment of the present invention are achieved by the following specific technical means:

[0009] A soil tunnel excavation equipment comprises a milling machine body and an excavation device, wherein the excavation device is installed and connected at the end of the swing arm of the milling machine body, and the excavation device is provided with a crushing assembly, wherein the crushing assembly comprises a bucket shell and an arc-shaped top cover, wherein one end of the bucket shell is connected with an arc-shaped top cover, wherein the arc-shaped top cover is connected with the bucket shell to form a crushing chamber, wherein a conveying roller, a second crushing assembly and a first crushing assembly are sequentially installed inside the crushing chamber from the outside to the inside, wherein the first crushing assembly comprises a first assembly, a second assembly and a third assembly, wherein the second assembly is installed inside the first assembly, wherein the third assembly is installed inside the second assembly, wherein fixed plates are symmetrically provided at both ends of the first assembly, wherein a crushing gear bar is connected between the fixed plates, and wherein the fixed plate provided at one end is connected with a An outer end driving shaft, the end of the outer end driving shaft is connected with a first gear, the second component includes three groups of crushing gear assemblies and a fixed rod, the three groups of crushing gear assemblies are arranged in sequence from left to right, and a fixed rod is connected between the three groups of crushing gear assemblies, the crushing gear assembly includes a first crushing gear and a second crushing gear, the first crushing gear is arranged on one side of the first gear, and the outer sides of two groups of the second crushing gears arranged away from the side of the first gear are connected with a first crushing plate, the outer side of the second crushing gear arranged at the right end is fixedly connected with a transmission rod, and the end of the transmission rod is connected with a telescopic driving motor, the third component includes a second crushing plate and a telescopic rod, the telescopic rod passes through the three groups of crushing gear assemblies, and two second crushing plates are installed on the outer side of the telescopic rod.

[0010] A further technical solution is that the second crushing assembly includes a crushing gear roller, both ends of the crushing gear roller are eccentrically connected with a circular plate, the outer side of the circular plate arranged on one side of the first gear is connected with a first driving shaft, the outer side of the first driving shaft is connected with a second gear, the second gear is meshed with the first gear, and the end of the first driving shaft is fixedly connected with a first driving motor.

[0011] According to a further technical solution, the conveying roller comprises two groups of outer plates, a gear rod is connected between the two groups of outer plates, and a third drive motor is connected to the outer side of the outer plate arranged on one side of the first drive motor.

[0012] According to a further technical solution, two of the second crushing plates are respectively arranged between the three groups of the crushing gear assemblies, the first crushing plate and the second crushing plate are staggered, and an extension device is installed at the end of the telescopic rod.

[0013] According to a further technical solution, a second drive motor is fixedly connected to the outer side of the first gear, a first protective cover and a second protective cover are respectively provided on both sides of the bucket shell, and the first protective cover is arranged on one side of the second drive motor.

[0014] According to a further technical solution, a device cavity is provided inside the first protective cover, and the second drive motor, the first drive motor and the third drive motor are all installed inside the second drive motor.

[0015] According to a further technical solution, the excavating device is also provided with a milling and digging assembly and a hydraulic control box, and a hydraulic drive controller is installed at the end of the hydraulic control box.

[0016] According to a further technical solution, the milling and digging assembly comprises two groups of milling and digging drill bits, wherein the milling and digging drill bits comprise a shaft body and a first drill bit, a crushing drill bit and a second drill bit arranged on the outer surface of the shaft body, a plurality of the first drill bits and a plurality of the second drill bits are evenly distributed on the surface of the shaft body, and the crushing drill bit is located between the first drill bit and the second drill bit.

[0017] According to a further technical solution, the extending device comprises a telescopic motor and a shock-absorbing spring, wherein the telescopic motor is arranged on one side of the telescopic rod, one end of the telescopic motor is fixedly connected with a shock-absorbing spring, and the end of the telescopic motor is connected to the telescopic rod.

[0018] According to a further technical solution, an extended shovel plate is connected to the end of the bucket shell, and a plurality of convex strips are arranged in an array on the surface of the extended shovel plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention provides a soil tunnel excavation equipment, which is provided with a second component, which is arranged between fixed plates symmetrically at both ends and is driven by a telescopic drive motor to achieve lateral reciprocating movement. The lateral reciprocating movement promotes the interactive reciprocating meshing and squeezing action between the first crushing plate in the second crushing gear and the second crushing plate located on a partial area of ​​the third component, thereby enhancing the crushing effect. When the first crushing component rotates, it forms a relative rotation state with the second crushing component, and the relative rotation state causes the second component to form a dual crushing effect of rolling crushing and lateral rubbing. Large stones experience the effects of two mechanisms in such a crushing area: on the one hand, they are subjected to rolling crushing caused by rotation, and on the other hand, they experience lateral rubbing, which significantly improves the crushing efficiency and enriches the crushing methods. Moreover, when the telescopic drive motor activates three groups of crushing gear components to perform lateral reciprocating movement, the problem of soil adhesion on the components is effectively prevented, especially when processing sticky soil. A single rolling crushing mode may be inefficient in such a case, and may even cause blockage. The integrated lateral rubbing effect ensures that efficient and smooth crushing operations can be maintained even when facing high-viscosity materials. Through these carefully designed motion mechanisms, the equipment not only optimizes the crushing process, but also significantly improves its adaptability and processing capabilities under various material conditions.

[0021] The present invention provides a soil tunnel excavation equipment, which is provided with a second crushing assembly. When gravel enters the crushing chamber, the second crushing assembly starts the motion mechanism. In this process, the first drive motor built into the equipment chamber is activated to drive the second gear to rotate. Subsequently, the first drive shaft installed inside the second gear is driven, causing the circular plate to start rotating. The rotation of the circular plate further causes the crushing gear drum to perform eccentric rotation. During this eccentric rotation, the crushed stones continue to fall and fall into the gap specially set between the second crushing assembly and the first crushing assembly. It is worth noting that the eccentric motion trajectory of the second crushing assembly is cleverly designed: when it deflects to the extreme outside, the gap reaches the maximum, which is convenient for large pieces of crushed stones to pass through and guide to a specific collection area; on the contrary, when it deflects inward, it can effectively screen out smaller gravel. These fine particles are then discharged through the filter holes on the surface of the bucket shell. Compared with the crushing device with a fixed gap, this design can more efficiently convert kinetic energy into crushing force by accurately controlling the mechanical movement, potentially reducing energy requirements. Specifically, it ensures that the applied force is precisely focused on the actual material to be processed, greatly reducing useless work and reflecting the design's dual optimization of energy efficiency and crushing efficiency. Through the eccentric rotation design of the crushing gear drum, the material is more fully crushed, especially for sand and gravel of different sizes, which can achieve more effective grading and processing, thereby improving the processing capacity and efficiency.

[0022] The present invention provides a soil tunnel excavation equipment, which is provided with a conveying roller. When the milling machine performs milling and excavation operations, the conveying roller arranged at the entrance of the crushing chamber rotates with the help of the driving force of a third driving motor. During the rotation of the conveying roller, the gear rod installed on it rotates accordingly, acts on the sand and gravel on the surface of the extended shovel plate, and pushes it backward. This pushing action prompts the sand and gravel accumulated on the outside to enter the crushing chamber for crushing. Through the continuous rotation of the conveying roller, not only can large stones or other hard materials be effectively introduced into the crushing area inside the bucket, but its own rotational movement also produces a preliminary crushing effect on small-sized stones or loose materials, preparing for the subsequent deep crushing operation in advance, thereby enhancing the thoroughness of the crushing process. Through the automatic feeding function of the conveying roller, the material is continuously fed into the crushing chamber, reducing the need for manual intervention and improving the working efficiency. In addition, since the conveying roller can also perform preliminary crushing while feeding the material, the pressure in the subsequent crushing stage can be reduced, thereby possibly reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall side view structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the overall first appearance of the excavation device 12 of the present invention;

[0028] Figure 4 It is a schematic diagram of the overall side view structure of the excavation device 12 of the present invention;

[0029] Figure 5 It is a schematic diagram of the overall second appearance structure of the excavation device 12 of the present invention;

[0030] Figure 6 It is a schematic diagram of the overall side cross-sectional structure of the excavation device 12 of the present invention;

[0031] Figure 7 It is a schematic diagram of the internal structure of the excavation device 12 in the present invention;

[0032] Figure 8 It is a top view schematic diagram of the internal structure of the excavation device 12 in the present invention;

[0033] Fig. 9 Schematic diagram of the internal structure of the bucket housing 21 of the present invention;

[0034] Fig.10 It is a schematic diagram of the appearance of the internal structure of the present invention;

[0035] Fig.11 Schematic diagram of the internal structure cross section of the first crushing assembly 24 in the present invention;

[0036] Fig.12 It is a schematic diagram of the appearance of the overall structure of the first crushing assembly 24 in the present invention;

[0037] Fig.13 It is a schematic diagram of the internal structure of the first crushing assembly 24 in the present invention.

[0038] Description of reference numerals:

[0039] Milling machine body 11, excavation device 12, crushing assembly 13, milling assembly 14, hydraulic control box 15, first drill bit 16, crushing drill bit 17, second drill bit 18, milling drill bit 19, hydraulic drive controller 20, bucket housing 21, crushing chamber 22, first crushing assembly 24, second crushing assembly 27, conveying rollers 28, 29, arc top cover 30, extended shovel plate 31, first protective cover 32, second protective cover 33, equipment chamber 34, first gear 35, second gear 36, first drive motor 37, convex strip 38, outer plate 3 9. Gear rod 40, third drive motor 41, first drive shaft 42, circular plate 43, crushing gear drum 44, fixed plate 45, outer end drive shaft 46, first crushing gear 47, second crushing gear 48, crushing gear assembly 49, first crushing plate 50, second crushing plate 51, second drive motor 52, telescopic rod 53, fixed rod 54, transmission rod 55, telescopic drive motor 56, telescopic motor 57, shock-absorbing spring 58, extension device 60, crushing gear bar 61, first assembly 62, second assembly 63, third assembly 64. DETAILED DESCRIPTION

[0040] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0041] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] As attached Figure 1 To Attachment Fig.13 As shown:

[0044] The present invention provides a soil tunnel excavation equipment, including a milling machine body 11 and an excavation device 12, the excavation device 12 is installed and connected at the end of the swing arm of the milling machine body 11, and the excavation device 12 is provided with a crushing assembly 13, the crushing assembly 13 includes a bucket shell 21 and an arc-shaped top cover 30, one end of the bucket shell 21 is connected with the arc-shaped top cover 30, the arc-shaped top cover 30 is connected to the bucket shell 21 to form a crushing chamber 22, and a conveying roller 28, a second crushing assembly 27 and a first crushing assembly 24 are sequentially installed inside the crushing chamber 22 from the outside to the inside, the first crushing assembly 24 includes a first assembly 62, a second assembly 63 and a third assembly 64, the second assembly 63 is installed inside the first assembly 62, and the third assembly 64 is installed inside the second assembly 63, and the two ends of the first assembly 62 are symmetrically provided with fixed plates 45, and a crushing gear bar 61 is connected between the fixed plates 45, and the fixed plate 45 provided at one end is provided with a crushing gear bar 61. The side is connected with an outer end driving shaft 46, and the end of the outer end driving shaft 46 is connected with a first gear 35. The second component 63 includes three groups of crushing gear components 49 and a fixing rod 54. The three groups of crushing gear components 49 are arranged in sequence from left to right, and a fixing rod 54 is connected between the three groups of crushing gear components 49. The crushing gear component 49 includes a first crushing gear 47 and a second crushing gear 48. The first crushing gear 47 is arranged on one side of the first gear 35, and the outer sides of the two groups of the second crushing gears 48 arranged on the side away from the first gear 35 are connected with a first crushing plate 50. The outer side of the second crushing gear 48 arranged at the right end is fixedly connected with a transmission rod 55, and the end of the transmission rod 55 is connected with a telescopic driving motor 56. The third component 64 includes a second crushing plate 51 and a telescopic rod 53. The telescopic rod 53 passes through the three groups of crushing gear components 49, and two second crushing plates 51 are installed on the outer side of the telescopic rod 53.

[0045] In this embodiment, the second component 63 is arranged between the fixed plates 45 symmetrical at both ends, and is driven by the telescopic drive motor 56 to achieve lateral reciprocating movement. The lateral reciprocating movement promotes the interactive reciprocating meshing and squeezing action between the first crushing plate 50 in the second crushing gear 48 and the second crushing plate 51 located on the partial area of ​​the third component 64, thereby enhancing the crushing effect. When the first crushing component 24 rotates, it forms a relative rotation state with the second crushing component 27. The relative rotation state causes the second component 63 to form a dual crushing effect of rolling crushing and lateral rubbing. The large stone is subjected to the action of two mechanisms in such a crushing area: on the one hand, it is subjected to rolling crushing caused by rotation, and on the other hand, it is subjected to lateral rubbing, which significantly improves the crushing efficiency and enriches the crushing method. Moreover, when the telescopic drive motor 56 activates the three sets of crushing gear components 49 to perform lateral reciprocating movement, it effectively prevents the adhesion of soil on the components, especially when processing sticky soil. A single rolling crushing mode may be inefficient in such a case, or even cause blockage. The integrated lateral rubbing mechanism is an effective strategy to combat the blockage problem, ensuring efficient and smooth crushing even when facing high-viscosity materials. This equipment not only optimizes the crushing process, but also significantly improves its adaptability and processing capacity under various material conditions.

[0046] Preferably, see Attachment Fig.10 The second crushing assembly 27 includes a crushing gear drum 44, and circular plates 43 are eccentrically connected to both ends of the crushing gear drum 44. A first driving shaft 42 is connected to the outer side of the circular plate 43 arranged on one side of the first gear 35. A second gear 36 is connected to the outer side of the first driving shaft 42. The second gear 36 is meshed with the first gear 35, and a first driving motor 37 is fixedly connected to the end of the first driving shaft 42.

[0047] Preferably, see Attachment Fig.11 The conveying roller 28 includes two groups of outer plates 39 , a gear rod 40 is connected between the two groups of outer plates 39 , and a third driving motor 41 is connected to the outer side of the outer plate 39 arranged on one side of the first driving motor 37 .

[0048] Preferably, see Attachment Fig.11 The two second crushing plates 51 are respectively arranged between the three groups of the crushing gear assemblies 49 , the first crushing plate 50 and the second crushing plate 51 are staggered, and a stretching device 60 is installed at the end of the telescopic rod 53 .

[0049] Preferably, see Attachment Figures 6 to 8A second drive motor 52 is fixedly connected to the outer side of the first gear 35 , and a first protective cover 32 and a second protective cover 33 are respectively provided on both sides of the bucket housing 21 , and the first protective cover 32 is arranged on one side of the second drive motor 52 .

[0050] Preferably, see Attachment Figures 6 to 8 The first protective cover 32 has an equipment cavity 34 inside, and the second drive motor 52 , the first drive motor 37 , and the third drive motor 41 are all installed inside the second drive motor 52 .

[0051] Preferably, see Attachment Figure 3 And attached Fig. 9 The excavation device 12 is also provided with a milling and digging assembly 14 and a hydraulic control box 15 , and a hydraulic drive controller 20 is installed at the end of the hydraulic control box 15 .

[0052] Preferably, see Attachment Figure 5 The milling and digging assembly 14 includes two groups of milling and digging drill bits 19, and the milling and digging drill bits 19 include a shaft body and a first drill bit 16, a crushing drill bit 17 and a second drill bit 18 arranged on the outer surface of the shaft body. Several of the first drill bits 16 and several of the second drill bits 18 are evenly distributed on the surface of the shaft body, and the crushing drill bit 17 is located between the first drill bit 16 and the second drill bit 18.

[0053] Preferably, see Attachment Fig.11 The stretching device 60 includes a telescopic motor 57 and a shock-absorbing spring 58. The telescopic motor 57 is arranged on one side of the telescopic rod 53. One end of the telescopic motor 57 is fixedly connected with the shock-absorbing spring 58, and the end of the telescopic motor 57 is connected to the telescopic rod 53.

[0054] Preferably, see Attachment Fig. 9 An extended shovel plate 31 is connected to the end of the bucket shell 21 , and a plurality of convex strips 38 are arranged in an array on the surface of the extended shovel plate 31 .

[0055] Specific use of the present invention:

[0056] When using the present invention, first install the excavating device 12 of the present invention to the front end of the milling machine body 11, and then when the excavating device 12 is over-controlled in the main control cab of the milling machine to perform milling, the two milling drill bits 19 provided in the excavating device 12 will be controlled by the hydraulic control box 15 and the hydraulic transmission system, so that the two milling drill bits 19 rotate.

[0057] When the milling drill 19 part mills the stone, the milled gravel will form a slope upward through the inclination angle of the excavation device 12 when the bucket shell 21 is in operation, so that the milled gravel falls from the surface of the extended shovel plate 31 to the inside of the crushing chamber 22 for fine crushing. When the milling machine performs the milling operation, the conveying drum 28 arranged at the entrance of the crushing chamber 22 rotates with the driving force of the third drive motor 41. During the rotation of this conveying drum 28, the gear rod 40 installed on it rotates accordingly, acting on the gravel on the surface of the extended shovel plate 31 and pushing it backward. This pushing action causes the gravel accumulated on the outside to enter the crushing chamber 22 for crushing. Through the continuous rotation of the conveying drum 28, not only can large stones or other hard materials be effectively introduced into the crushing area inside the bucket, but its own rotational movement also produces a preliminary crushing effect on small-sized stones or loose materials, preparing for the subsequent deep crushing operation, thereby enhancing the thoroughness of the crushing process. Through the automatic feeding function of the conveying drum 28, materials are continuously fed into the crushing chamber, reducing the need for manual intervention and improving work efficiency. In addition, since the conveying drum can perform preliminary crushing while feeding the material, this can reduce the pressure in the subsequent crushing stage, thereby possibly reducing energy consumption.

[0058] When the gravel enters the crushing chamber 22, the second crushing assembly 27 starts the motion mechanism. During this process, the first drive motor 37 built into the equipment chamber 34 is activated, driving the second gear 36 to rotate. Subsequently, the first drive shaft 42 installed inside the second gear 36 is driven, causing the circular plate 43 to start rotating. The rotation of the circular plate 43 further causes the crushing gear drum 44 to perform eccentric rotation. During this eccentric rotation, the gravel continues to fall into the gap specially set between the second crushing assembly 27 and the first crushing assembly 24. It is worth noting that the eccentric motion trajectory of the second crushing assembly 27 is cleverly designed: when it deflects to the extreme outside, the gap is maximized, which facilitates the passage of large gravel and guides it to a specific collection area; conversely, when it deflects inward, it can effectively filter out smaller gravel. These fine particles are then discharged through the filter holes on the surface of the bucket shell 21. Compared with the crushing device with a fixed gap, this design can more efficiently convert kinetic energy into crushing force by precisely controlling the mechanical movement, potentially reducing energy requirements. Specifically, it ensures that the applied force is precisely focused on the actual material to be processed, greatly reducing useless work and reflecting the design's dual optimization of energy efficiency and crushing efficiency. Through the eccentric rotation design of the crushing gear drum, the material is more fully crushed, especially for sand and gravel of different sizes, which can achieve more effective grading and processing, thereby improving the processing capacity and efficiency.

[0059] When the second drive motor 52 rotates, it runs in the opposite direction to the first drive motor 37, and the first gear 35 and the second gear 36 are meshed with each other. The second assembly 63 is arranged between the fixed plates 45 symmetrical at both ends, and is driven by the telescopic drive motor 56 to achieve transverse reciprocating movement. The transverse reciprocating movement causes the first crushing plate 50 in the second crushing gear 48 and the second crushing plate 51 located on the partial area of ​​the third assembly 64 to reciprocate and bite the stones, thereby enhancing the crushing effect. When the first crushing assembly 24 rotates, it forms a relative rotation state with the second crushing assembly 27. The relative rotation state forms a double crushing effect of rolling crushing and transverse rubbing on the second assembly 63. The large stone is subjected to the action of two mechanisms in such a crushing area: on the one hand, it is subjected to rolling crushing caused by rotation, and on the other hand, it is subjected to transverse rubbing, which significantly improves the crushing efficiency and enriches the crushing method. Moreover, when the telescopic drive motor 56 activates the three sets of crushing gear assemblies 49 to perform transverse reciprocating movement, the problem of soil adhesion on the assembly is effectively prevented, especially when dealing with sticky soil. A single rolling crushing mode may be inefficient in such situations, or even cause blockage. The integrated lateral rubbing mechanism is an effective strategy to combat the blockage problem, ensuring efficient and smooth crushing even when facing high-viscosity materials. Through these carefully designed motion mechanisms, the equipment not only optimizes the crushing process, but also significantly improves its adaptability and processing capabilities under various material conditions.

[0060] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A soil tunnel excavation equipment, comprising a milling machine body (11) and an excavation device (12), wherein the excavation device (12) is installed at the end of the swing arm of the milling machine body (11), characterized in that: The excavating device (12) is provided with a crushing assembly (13), the crushing assembly (13) comprising a bucket shell (21) and an arc-shaped top cover (30), one end of the bucket shell (21) is connected with the arc-shaped top cover (30), the arc-shaped top cover (30) is connected with the bucket shell (21) to form a crushing chamber (22), the interior of the crushing chamber (22) is sequentially installed with a conveying roller (28), a second crushing assembly (27) and a first crushing assembly (24) from the outside to the inside, the first crushing assembly (24) comprising a first assembly (62), a second assembly ( 63) and a third component (64), the second component (63) is installed inside the first component (62), the third component (64) is installed inside the second component (63), the first component (62) is symmetrically provided with fixing plates (45) at both ends, a crushing gear bar (61) is connected between the fixing plates (45), an outer end driving shaft (46) is connected to the outer side of the fixing plate (45) at one end, and a first gear (35) is connected to the end of the outer end driving shaft (46), the second component (63) includes three groups of crushing gear components (4 9) and a fixing rod (54), the three groups of the crushing gear assemblies (49) are arranged in sequence and spaced apart, and a fixing rod (54) is connected between the three groups of the crushing gear assemblies (49), the crushing gear assembly (49) comprises a first crushing gear (47) and a second crushing gear (48), the first crushing gear (47) is arranged on one side of the first gear (35), and the outer sides of the two groups of the second crushing gears (48) arranged on the side away from the first gear (35) are connected with a first crushing plate (50), and the outer sides of the second crushing gear (48) arranged on the right end are connected with a first crushing plate (50). A transmission rod (55) is fixedly connected to the side, and a telescopic driving motor (56) is connected to the end of the transmission rod (55). The third component (64) includes a second crushing plate (51) and a telescopic rod (53). The telescopic rod (53) runs through the three groups of crushing gear assemblies (49). Two second crushing plates (51) are installed on the outer side of the telescopic rod (53). The first crushing plate (50) and the second crushing plate (51) are staggered. The first crushing plate (50) and the second crushing plate (51) move in parallel with each other to crush stones.

2. The soil tunnel excavation equipment according to claim 1, characterized in that: The second crushing assembly (27) comprises a crushing gear drum (44), the two ends of the crushing gear drum (44) are eccentrically connected with a circular plate (43), the outer side of the circular plate (43) arranged on one side of the first gear (35) is connected with a first drive shaft (42), the outer side of the first drive shaft (42) is connected with a second gear (36), the second gear (36) is meshed with the first gear (35), and the end of the first drive shaft (42) is fixedly connected with a first drive motor (37).

3. The soil tunnel excavation equipment according to claim 2, characterized in that: The conveying roller (28) comprises two groups of outer plates (39), a gear rod (40) is connected between the two groups of outer plates (39), and a third drive motor (41) is connected to the outer side of the outer plate (39) arranged on one side of the first drive motor (37).

4. The soil tunnel excavation equipment according to claim 3, characterized in that: The two second crushing plates (51) are respectively arranged between the three groups of the crushing gear assemblies (49), and a stretching device (60) is installed at the end of the telescopic rod (53).

5. The soil tunnel excavation equipment according to claim 4, characterized in that: A second drive motor (52) is fixedly connected to the outside of the first gear (35), and a first protective cover (32) and a second protective cover (33) are respectively provided on both sides of the bucket housing (21), and the first protective cover (32) is arranged on one side of the second drive motor (52).

6. The soil tunnel excavation equipment according to claim 5, characterized in that: An equipment cavity (34) is provided inside the first protective cover (32), and the second drive motor (52), the first drive motor (37) and the third drive motor (41) are all installed inside the equipment cavity (34).

7. The soil tunnel excavation equipment according to claim 1, characterized in that: The excavating device (12) is further provided with a milling and excavating assembly (14) and a hydraulic control box (15), and a hydraulic drive controller (20) is installed at the end of the hydraulic control box (15).

8. The soil tunnel excavation equipment according to claim 7, characterized in that: The milling and digging assembly (14) comprises two groups of milling and digging drill bits (19), wherein the milling and digging drill bits (19) comprise a shaft body and a first drill bit (16), a crushing drill bit (17) and a second drill bit (18) arranged on the outer surface of the shaft body, wherein a plurality of the first drill bits (16) and a plurality of the second drill bits (18) are evenly distributed on the surface of the shaft body, and the crushing drill bit (17) is located between the first drill bit (16) and the second drill bit (18).

9. The soil tunnel excavation equipment according to claim 4, characterized in that: The extending device (60) comprises a telescopic motor (57) and a shock-absorbing spring (58); the telescopic motor (57) is arranged on one side of the telescopic rod (53); one end of the telescopic motor (57) is fixedly connected to the shock-absorbing spring (58); and the end of the telescopic motor (57) is connected to the telescopic rod (53).

10. The soil tunnel excavation equipment according to claim 6, characterized in that: An extended shovel plate (31) is connected to the end of the bucket shell (21), and a plurality of convex strips (38) are arranged in an array on the surface of the extended shovel plate (31).

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