Tunneling mechanism and tunneling equipment

Abstract

The utility model provides a tunneling mechanism and tunneling equipment, and relates to the technical field of construction. The tunneling mechanism comprises a high-frequency breaking hammer, an arm frame assembly and a first driving piece. Wherein the arm support assembly comprises a large arm and a small arm, the large arm is in transmission connection with the small arm, and the small arm is provided with a containing groove used for containing the high-frequency breaking hammer. It is easy to understand that the high-frequency breaking hammer is contained in the containing groove of the small arm, the overall height of the equipment can be obviously reduced, and the tunneling mechanism can be freely operated in a narrow and low space. On the basis, the first driving piece is hinged to the large arm and the small arm and used for driving the small arm to pitch relative to the large arm. On the basis, when the device is applied to a working scene, a worker can adjust the working angle of the small arm and the working angle of the high-frequency breaking hammer located on the small arm according to the actual working condition, it is ensured that the high-frequency breaking hammer can find the best working posture in the narrow and low environment, and the due efficiency is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the construction technical field, specifically, relates to a kind of tunneling mechanism and tunneling equipment. BACKGROUND

[0002] High-frequency breaking hammer passes through its high-frequency vibration and hydraulic drive system, energy is transmitted to hammer head, so as to produce powerful impact force;It has the advantages of high breaking efficiency, wide application range, energy saving and environmental protection, and high safety. In recent years, with the increasing demand for efficient, environmentally friendly and safe construction equipment in the process of mine and tunneling construction, high-frequency breaking hammer has attracted widespread attention in the market due to its unique performance advantages.

[0003] However, in practical application, the internal structure of high-frequency breaking hammer is complex, which makes its size larger than that of other breaking devices with the same power. This feature increases the difficulty of operating high-frequency breaking hammer in certain construction environments, such as narrow tunnels or passages. Due to its large size and weight, high-frequency breaking hammer is prone to environmental interference when applied to a tunneling arm in a narrow space, which cannot fully exert its performance and is difficult to meet the needs of some special construction environments. SUMMARY

[0004] The purpose of the utility model includes providing a kind of tunneling mechanism and tunneling equipment, which can accommodate high-frequency breaking hammer into accommodating groove, thereby significantly reducing the overall height of the equipment, avoiding environmental interference in a narrow space, and ensuring its performance.

[0005] The embodiments of the utility model can be implemented as follows:

[0006] In a first aspect, the utility model provides a kind of tunneling mechanism, comprising:

[0007] High-frequency breaking hammer;

[0008] Arm support assembly, arm support assembly includes large arm and small arm, and large arm and small arm are drivingly connected, and small arm is provided with accommodating groove for accommodating high-frequency breaking hammer;

[0009] First driving part, first driving part is hinged with large arm and small arm, and is used to drive small arm to pitch relative to large arm.

[0010] In an optional embodiment, the small arm includes a first side wall, a second side wall and a bottom wall, and the first side wall, the bottom wall and the second side wall are connected in sequence to form the accommodating groove, and the first side wall and the second side wall are both provided with an avoiding groove along the breaking direction.

[0011] In an optional embodiment, the first driving part is connected to the side of the first side wall and / or the second side wall away from the high-frequency breaking hammer.

[0012] In an optional embodiment, the tunneling mechanism further comprises a third driving member, a linkage assembly, and a bucket; the bucket is located below the escape groove and is hinged to the first sidewall and the second sidewall; the third driving member is hinged to the small arm and is connected to the bucket through the linkage assembly.

[0013] In an optional embodiment, the linkage assembly comprises a first linkage and a second linkage; the first linkage is hinged to the bucket and the third driving member; the two ends of the second linkage are respectively hinged to the small arm and the middle part of the first linkage.

[0014] In an optional embodiment, the tunneling mechanism further comprises a second driving member, a guide shaft connected to the small arm, and a guide sleeve connected to the high-frequency breaking hammer; the two ends of the second driving member are respectively hinged to the high-frequency breaking hammer and the small arm, for driving the high-frequency breaking hammer to slide along the breaking direction relative to the small arm; the guide shaft cooperates with the guide sleeve.

[0015] In an optional embodiment, the boom assembly further comprises a swing arm and a rotary arm located between the large arm and the small arm; the large arm, the swing arm, the rotary arm, and the small arm are sequentially transmission-connected; the tunneling mechanism further comprises a fourth driving member; the fourth driving member is connected to the large arm and the swing arm, for driving the swing arm to swing relative to the large arm.

[0016] In an optional embodiment, the boom assembly further comprises a rotary bearing and a rotary driving member; the rotary bearing is connected between the rotary arm and the swing arm; the rotary driving member is drivingly connected to the rotary bearing, and drives the rotary bearing to rotate relative to the swing arm.

[0017] In an optional embodiment, the tunneling mechanism further comprises a fifth driving member and a swing seat; the fifth driving member is hinged to the swing seat and the large arm, for driving the large arm to pitch relative to the swing seat; the swing seat is used for being connected to the vehicle body.

[0018] In a second aspect, the utility model provides a kind of tunneling equipment, comprising vehicle body and the tunneling mechanism of any one of preceding embodiment, and vehicle body is connected with tunneling mechanism.

[0019] The tunneling mechanism and the tunneling equipment provided by the embodiments of the utility model have the following beneficial effects.

[0020] The utility model provides a kind of tunneling mechanism and tunneling equipment, it is related to construction technical field.The tunneling mechanism includes high frequency breaking hammer, jib assembly and first driving part.Among them, jib assembly includes big arm and small arm, and big arm and small arm transmission connection, and small arm is opened and is used to accommodate the accommodating groove of high frequency breaking hammer.Easy to understand is, by accommodating high frequency breaking hammer to the accommodating groove in small arm, the overall height of equipment can be significantly reduced, so that tunneling mechanism can be freely operated in narrow, low space.In the above basis, first driving part is hinged with big arm and small arm, and for driving small arm relative to big arm pitch.Based on this, applied in working scene, worker can adjust the working angle of small arm and high frequency breaking hammer located on small arm according to actual working condition, ensure that high frequency breaking hammer can find the best working posture in narrow, low environment, exert due efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying creative labor, still can obtain other related drawings according to these drawings.

[0022] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying creative labor, still can obtain other related drawings according to these drawings.

[0023] Figure 1 The structural schematic diagram of tunneling mechanism in first perspective provided for the embodiment of the utility model;

[0024] Figure 2 The structural schematic diagram of tunneling mechanism in second perspective provided for the embodiment of the utility model;

[0025] Figure 3 The structural schematic diagram of high frequency breaking hammer in first perspective provided for the embodiment of the utility model;

[0026] Figure 4 The structural schematic diagram of high frequency breaking hammer in second perspective provided for the embodiment of the utility model.

[0027] Icon: 10 - tunneling mechanism; 100 - high-frequency breaking hammer; 110 - hammer head; 120 - hydraulic motor; 130 - damping box; 140 - vibration excitation box; 141 - driving gear; 142 - first driven gear; 143 - second driven gear; 144 - first eccentric wheel; 145 - second eccentric wheel; 150 - connecting rod mechanism; 160 - damping air bag; 200 - boom assembly; 210 - large arm; 230 - swing arm; 250 - rotary arm; 261 - slewing bearing; 263 - slewing drive; 270 - small arm; 271 - accommodating groove; 273 - first side wall; 275 - second side wall; 277 - avoiding groove; 300 - excavator bucket; 410 - guide shaft; 430 - guide sleeve; 500 - connecting rod assembly; 510 - first connecting rod; 530 - second connecting rod; 600 - swing seat; 710 - first drive; 720 - second drive; 730 - third drive; 740 - fourth drive; 750 - fifth drive. DETAILED DESCRIPTION

[0028] In the related art, the high-frequency breaking hammer has a large volume and weight, and when applied to the tunneling arm, it is easily disturbed by the environment in a narrow space, and cannot fully exert its due performance, and it is difficult to meet the needs of some special construction environments.

[0029] In view of the above problems, the utility model provides a tunneling mechanism 10 and a tunneling device, which can accommodate the high-frequency breaking hammer 100 into the accommodating groove 271, thereby significantly reducing the overall height of the device, avoiding environmental disturbance in a narrow space, and ensuring that it can exert its due performance.

[0030] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0032] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0033] In the description of the utility model, it needs to be explained that if the terms such as "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the utility model product when it is usually placed, it is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model.

[0034] In addition, if the terms "first", "second" and the like are used only for differentiation, they cannot be understood as indicating or implying relative importance.

[0035] It needs to be explained that the features in the embodiments of the utility model can be combined with each other without conflict.

[0036] The overall structure, working principle and technical effects of the tunneling mechanism 10 and the tunneling equipment provided by the utility model will be described in detail below by combining with the drawings. Figure 1 The structural schematic diagram of the tunneling mechanism 10 provided by the embodiment under the first visual angle, Figure 2 The structural schematic diagram of the tunneling mechanism 10 provided by the embodiment under the second visual angle, please refer to Figure 1 And Figure 2 The utility model provides a kind of tunneling mechanism 10, it includes high-frequency breaking hammer 100, jib assembly 200 and first driving piece 710.

[0037] Among them, jib assembly 200 includes large arm 210 and small arm 270, and large arm 210 is drivingly connected with small arm 270, and small arm 270 is provided with accommodating groove 271 for accommodating high-frequency breaking hammer 100.Easy to understand is that by accommodating high-frequency breaking hammer 100 into the accommodating groove 271 of small arm 270, the overall height of the equipment can be significantly reduced, so that tunneling mechanism 10 can be freely operated in narrow, low space.

[0038] On the basis, first driving piece 710 is hinged with large arm 210 and small arm 270, and is used to drive small arm 270 relative to large arm 210 pitch.Based on this, applied in working scene, staff can adjust the working angle of small arm 270 and high-frequency breaking hammer 100 located on small arm 270 according to actual working condition, ensure that high-frequency breaking hammer 100 can find the best working posture in narrow, low environment, and play due efficiency.

[0039] Therefore, in order to solve the problem that the high-frequency breaking hammer 100 in the prior art is susceptible to environmental interference in a narrow space and cannot fully exert its due performance, the utility model discloses a containing groove 271 is formed on the small arm 270, the accommodation function is integrated with the arm support assembly 200, the height of the whole tunneling mechanism 10 is reduced, and the compactness of the whole tunneling mechanism 10 is improved. Furthermore, the utility model also realizes the pitching function of the small arm 270 through the first driving part 710, further enhances the applicability of the tunneling mechanism 10 in a narrow and low environment, and ensures that the tunneling mechanism 10 can exert its due performance.

[0040] As shown in Figure 1 The small arm 270 includes a first side wall 273, a second side wall 275 and a bottom wall. The first side wall 273, the bottom wall and the second side wall 275 are connected in sequence to form the containing groove 271. It is easy to understand that the containing groove 271 is designed in a semi-open and semi-closed manner. On the one hand, it ensures that the high-frequency breaking hammer 100 can be freely unfolded and work efficiently when needed, without being restricted by too many structures, and on the other hand, it makes the whole high-frequency breaking hammer 100 and the arm support assembly 200 more compact, thereby improving the applicability in a narrow space.

[0041] In order to further ensure that the breaking hammer can be freely stretched to the best working position, the first side wall 273 and the second side wall 275 are both provided with an avoiding groove 277 along the breaking direction. It can be understood that the avoiding groove 277 reduces the potential collision between the breaking hammer and the side wall, especially in a working environment with high-frequency vibration and large impact, thereby reducing the risk of equipment damage. In addition, in order to effectively block falling objects from above, the small arm 270 can also include a top wall connected between the first side wall 273 and the second side wall 275.

[0042] In some embodiments, in order to avoid the first driving part 710 occupying the containing space of the high-frequency breaking hammer 100 and ensure that the containing groove 271 can provide enough space to accommodate the high-frequency breaking hammer 100, the first driving part 710 is connected to the side of the first side wall 273 and / or the second side wall 275 away from the high-frequency breaking hammer 100. In addition, it should be noted that when the number of first driving parts 710 is one, the first driving part 710 is connected to the first side wall 273 or the second side wall 275; when the number of first driving parts 710 is two, the two first driving parts 710 are respectively connected to the first side wall 273 and the second side wall 275.

[0043] Further, to increase the versatility of the tunneling mechanism 10, so that the tunneling mechanism 10 has both digging and breaking functions, the tunneling mechanism 10 further comprises a bucket 300, and the bucket 300 is located below the avoidance groove 277 and is hinged to the first sidewall 273 and the second sidewall 275. Based on this, the influence of the bucket 300 on the high-frequency breaking hammer 100 is avoided, and the risk of collision between the parts inside the device is reduced.

[0044] In addition, since the bucket 300 is located below the avoidance groove 277, its natural pitch angle may be limited by the structure, and the tunneling mechanism 10 further comprises a third driving member 730 and a linkage assembly 500, the third driving member 730 is hinged to the small arm 270 and connected to the bucket 300 through the linkage assembly 500, so as to overcome the limitation of the avoidance groove 277 on the pitch angle of the bucket 300, effectively expand the working range of the bucket 300, and ensure that the bucket 300 can adapt to different working conditions.

[0045] In practical application, the linkage assembly 500 can further supplement the working stroke of the third driving member 730 to ensure that the bucket 300 can reach a farther and deeper working position. Specifically, the linkage assembly 500 comprises a first linkage 510 and a second linkage 530, both ends of the first linkage 510 are hinged to the bucket 300 and the third driving member 730, and both ends of the second linkage 530 are hinged to the small arm 270 and the middle part of the first linkage 510. Based on this, the first linkage 510 and the second linkage 530 form a double-hinged structure, and under the synergistic action of the two, the pitch angle of the bucket 300 can be further enhanced.

[0046] Please refer again to Figure 2 To further improve the efficiency of breaking, the tunneling mechanism 10 further comprises a second driving member 720, a guide shaft 410 connected to the small arm 270, and a guide sleeve 430 connected to the high-frequency breaking hammer 100. Among them, the second driving member 720 is hinged to the high-frequency breaking hammer 100 and the small arm 270, and is used to drive the high-frequency breaking hammer 100 to slide along the breaking direction relative to the small arm 270, so as to pre-load the impact force before each breaking, and enhance the effect of each impact. On the basis of the above, the guide shaft 410 cooperates with the guide sleeve 430 to ensure that the high-frequency breaking hammer 100 slides stably along the predetermined path, and avoids unstable work caused by deviation or vibration.

[0047] Please refer again to Figure 1The arm support assembly 200 further comprises a swing arm 230 and a rotating arm 250 between the large arm 210 and the small arm 270. The large arm 210, the swing arm 230, the rotating arm 250 and the small arm 270 are sequentially connected in transmission, forming a mechanical mechanism with multiple degrees of freedom, so as to realize more complex spatial movement. Correspondingly, the tunneling mechanism 10 further comprises a fourth driving member 740 connected with the large arm 210 and the swing arm 230, for driving the swing arm 230 to swing relative to the large arm 210. In practical application, the fourth driving member 740 enables the swing arm 230 to swing left and right in the horizontal direction on the basis of the large arm 210, thereby greatly expanding the lateral working range. Optionally, the number of the fourth driving member 740 is two, symmetrically arranged on the two sides of the large arm 210.

[0048] Further, in order to adapt to the working scene requiring frequent direction change, the arm support assembly 200 further comprises a slewing bearing 261 and a slewing driving member 263. The slewing bearing 261 is connected between the rotating arm 250 and the swing arm 230, and the slewing driving member 263 is drivingly connected with the slewing bearing 261 and is used for driving the slewing bearing 261 to rotate relative to the swing arm 230. It is easy to understand that the slewing driving member 263 can drive the rotating arm 250 and the small arm 270 to rotate 360° in one direction, or 180° in the counterclockwise or clockwise direction. Optionally, the number of the slewing driving member 263 is two, symmetrically arranged on the two sides of the rotating arm 250.

[0049] Further, the tunneling mechanism 10 further comprises a fifth driving member 750 and a swing seat 600. The swing seat 600 is used for being connected with the vehicle body, and the fifth driving member 750 is hingedly connected with the swing seat 600 and the large arm 210, for driving the large arm 210 to pitch relative to the swing seat 600. In practical application, the fifth driving member 750 enables the large arm 210 to pitch up and down in the vertical direction on the basis of the swing seat 600, thereby greatly expanding the vertical working range.

[0050] Please refer to Figure 3 and Figure 4 , the specific structure of the high-frequency breaking hammer 100 will be described in detail. The high-frequency breaking hammer 100 comprises a hammer head 110, a hydraulic motor 120, a damping box 130, a vibration box 140 and a connecting rod mechanism 150. The hammer head 110 is connected with the vibration box 140, the hydraulic motor 120 and the vibration box 140 are both located in the damping box 130, and the vibration box 140 is hingedly connected with the damping box 130 through the connecting rod mechanism 150. Based on this, when the vibration box 140 performs horizontal striking, inclined upward / downward striking, it can be suspended in the damping box 130 through the connecting rod mechanism 150, converting the gravity into inertial force to enhance the horizontal / inclined striking force.

[0051] Since the displacement of the excitation box 140 is generated by the rotation of the gear assembly driven by the hydraulic motor 120 during the construction process, the inside of the excitation box 140 is provided with a driving gear 141, a first driven gear 142 and a second driven gear 143 which are sequentially engaged, and the first driven gear 142 is provided with a first eccentric wheel 144, and the second driven gear 143 is provided with a second eccentric wheel 145, and the first eccentric wheel 144 and the second eccentric wheel 145 rotate synchronously in opposite directions.

[0052] Based on this, the hydraulic motor 120 serves as a power source to drive the directly connected driving gear 141 to generate rotary motion. The driving gear 141 is engaged with the first driven gear 142, so as to transmit the rotary motion to the first driven gear 142. Then, the first driven gear 142 rotates to transmit the motion to the second driven gear 143 engaged therewith. The second driven gear 143 also rotates correspondingly, and the rotation direction thereof is opposite to that of the first driven gear 142, so as to make the first eccentric wheel 144 and the second eccentric wheel 145 generate reverse motion. Since the two eccentric wheels rotate reversely, the vibrations in the vertical direction generated by them will be offset by each other, while the vibrations in the direction of the hammer head 110 motion will be superimposed.

[0053] Based on the above, the high-frequency breaking hammer 100 can reduce unnecessary vibration while maintaining impact force, thereby improving the stability and energy utilization efficiency of the equipment. In addition, in order to further improve the construction stability of the equipment, the high-frequency breaking hammer 100 provided by the application is also provided with a shock absorption air bag 160 connected between the rear part of the excitation box 140 and the rear part of the shock absorption box 130, which can reduce the damage caused by the idle operation of the high-frequency breaking hammer 100, effectively reduce the stress of the shock absorption box 130, and reduce the shaking of the boom assembly 200.

[0054] In summary, the utility model provides a tunneling mechanism 10 which comprises a high-frequency breaking hammer 100, a boom assembly 200 and a first driving member 710. The boom assembly 200 comprises a large arm 210 and a small arm 270, and the large arm 210 and the small arm 270 are drivingly connected, and the small arm 270 is provided with a containing groove 271 for containing the high-frequency breaking hammer 100. It is easy to understand that by containing the high-frequency breaking hammer 100 in the containing groove 271 of the small arm 270, the overall height of the equipment can be significantly reduced, so that the tunneling mechanism 10 can be freely operated in a narrow and low space. On the basis of the above, the first driving member 710 is hinged to the large arm 210 and the small arm 270, and is used to drive the small arm 270 to pitch relative to the large arm 210. Based on this, when applied to a working scene, the working angle of the small arm 270 and the high-frequency breaking hammer 100 located on the small arm 270 can be adjusted according to the actual working condition, so as to ensure that the high-frequency breaking hammer 100 can find the best working posture in a narrow and low environment and play its due performance.

[0055] In addition, the utility model provides a kind of tunneling equipment, it includes car body and the tunneling mechanism 10 in the foregoing embodiment, and car body and tunneling mechanism 10 are connected. Therefore, on the one hand, the tunneling equipment can be by being set in accommodation slot 271 on small arm 270, the accommodation function is integrated with arm support component 200, reduces overall height, improves overall compactness;On the other hand, the tunneling equipment can also be by first driving element 710 to realize the pitch function of small arm 270, further enhanced the applicability of tunneling equipment in narrow, low environment, ensure that tunneling equipment can exert due efficiency.

[0056] The above is only the specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art in the technical range disclosed by the utility model can easily think of the change or replacement, should be covered in the protection scope of the utility model.

Claims

1. A tunneling mechanism, characterized by, include: High-frequency hydraulic breaker (100); A boom assembly (200) includes a boom (210) and a forearm (270), wherein the boom (210) and the forearm (270) are connected in a drive connection, and the forearm (270) has a receiving groove (271) for accommodating the high-frequency breaker (100). A first drive member (710) is hinged to the upper arm (210) and the lower arm (270) and is used to drive the lower arm (270) to pitch relative to the upper arm (210).

2. The tunneling mechanism of claim 1, wherein, The forearm (270) includes a first sidewall (273), a second sidewall (275) and a bottom wall, and the first sidewall (273), the bottom wall and the second sidewall (275) are connected in sequence to form the receiving groove (271), and the first sidewall (273) and the second sidewall (275) are both provided with clearance grooves (277) along the crushing direction.

3. A boring mechanism according to claim 2, characterised in that, The first drive member (710) is connected to the side of the first sidewall (273) and / or the second sidewall (275) away from the high-frequency breaker (100).

4. The tunneling mechanism of claim 2, wherein, The tunneling mechanism (10) further includes a third drive member (730), a linkage assembly (500), and a bucket (300); wherein the bucket (300) is located below the clearance groove (277) and is hinged to the first side wall (273) and the second side wall (275), the third drive member (730) is hinged to the boom (270) and connected to the bucket (300) through the linkage assembly (500).

5. A boring mechanism according to claim 4, characterised in that, The linkage assembly (500) includes a first link (510) and a second link (530); wherein the first link (510) is hinged to the bucket (300) and the third drive member (730), and the two ends of the second link (530) are respectively hinged to the forearm (270) and the middle part of the first link (510).

6. A boring mechanism according to any one of claims 1 to 5, wherein, The tunneling mechanism (10) further includes a second drive member (720), a guide shaft (410) connected to the arm (270), and a guide sleeve (430) connected to the high-frequency breaker (100). The two ends of the second drive member (720) are respectively hinged to the high-frequency breaker (100) and the arm (270) to drive the high-frequency breaker (100) to slide relative to the arm (270) along the crushing direction. The guide shaft (410) cooperates with the guide sleeve (430).

7. A boring mechanism according to any one of claims 1 to 5, wherein, The arm support assembly (200) further comprises a swing arm (230) and a rotary arm (250) between the large arm (210) and the small arm (270), and the large arm (210), the swing arm (230), the rotary arm (250) and the small arm (270) are sequentially drivingly connected, and the tunneling mechanism (10) further comprises a fourth driving member (740), the fourth driving member (740) is connected with the large arm (210) and the swing arm (230), and is used for driving the swing arm (230) to swing relative to the large arm (210).

8. A boring mechanism according to claim 7, characterised in that, The arm support assembly (200) further comprises a slewing bearing (261) and a slewing driving member (263); wherein the slewing bearing (261) is connected between the rotary arm (250) and the swing arm (230), the slewing driving member (263) is drivingly connected with the slewing bearing (261), and is used for driving the slewing bearing (261) to rotate relative to the swing arm (230).

9. The tunneling mechanism of claim 7, wherein, The tunneling mechanism (10) further comprises a fifth driving member (750) and a swing seat (600), the fifth driving member (750) is hinged with the swing seat (600) and the large arm (210), and is used for driving the large arm (210) to pitch relative to the swing seat (600), and the swing seat (600) is used for being connected with a vehicle body.

10. A tunneling apparatus, characterized by, The tunneling mechanism (10) is connected with the vehicle body. The tunneling mechanism (10) is connected with the vehicle body.

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