CN212690040U

CN212690040U - Full-section multifunctional non-explosive excavation equipment for tunnel construction

Info

Publication number: CN212690040U
Application number: CN202020045459.4U
Authority: CN
Inventors: 谭澈; 王羹喻
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2021-03-12
Anticipated expiration: 2030-01-09

Abstract

The utility model discloses a full-section multifunctional non-explosive excavation device for tunnel construction, which comprises a base, a walking mechanism, a cantilever assembly, a main rotary worktable, a hydraulic impact rock breaking mechanism and a stable support telescopic leg; the large arm support is obliquely arranged on a front inclined plane of the main rotary worktable and can do rotary motion around a first rotary center vertical to the front inclined plane, and the main rotary worktable is vertically arranged on the base and can do rotary motion around a second rotary center vertically arranged; the hydraulic impact rock breaking mechanism comprises an impactor, an impact oil cylinder and an excavating tool arranged at the front end of the impactor; the rear of the base is fixedly provided with a cross beam, one end of each stable support telescopic leg is hinged to the tail end of the cross beam, and the other end of each stable support telescopic leg is supported on the ground of the tunnel or the side wall of the tunnel through rotation. The method has the characteristics of wide application range of surrounding rocks, low excavation energy consumption, less dust, high excavation efficiency, no need of replacement in the excavation process and capability of performing full-section non-explosive excavation.

Description

Full-section multifunctional non-explosive excavation equipment for tunnel construction

Technical Field

The utility model relates to a tunnel construction equipment technical field, concretely relates to equipment that can carry out full section excavation in tunnel.

Background

In recent years, a large number of railways and highways are built, tunnels under various conditions appear, and meanwhile, the influence on production and life in the construction process is increased day by day, so that the traditional tunnel construction technology (blasting method) cannot meet the requirement of special tunnel construction. In the traditional construction, a blasting method is mostly adopted in the construction of harder surrounding rock tunnels, if the surrounding environment is complex, particularly when the tunnel passes through a city area, the tunnel is close to a dense residential area, buildings are dense, and the vibration in the construction process needs to be strictly controlled so as to prevent the influences of disturbing residents, vibration cracking of buildings on the overlying ground surface and the like. Especially, the current explosive control is strict, the environmental protection requirement is improved, many projects are subject to the initiating explosive management and the environmental protection requirement, and the construction time cannot be ensured.

The non-blasting excavation method is one of the methods for avoiding the problems, and is a construction method which can not be carried out by corresponding equipment through a blasting mode due to the influences of factors such as the surrounding environment, the management requirement, the surrounding rock conditions and the like.

In present tunnel engineering, because factors such as construction environment and geographical position influence, non-explosive excavation faces the difficult problem that effective excavation face is little, the progress is slow, adaptability is poor, the section surpasses the owe and digs the control difficult, and more traditional non-explosive excavation equipment has excavator, cutting machine, big gun machine (pecker), combine digger etc. but all has respective limitation, for example: the excavation angle and size are limited to a certain extent, and full-section excavation cannot be realized; the adaptive surrounding rock excavation range is small, secondary replacement is needed in the excavation process, and the construction efficiency is influenced; the energy consumption is high and the dust is large in the excavation process; in tunnel construction, there are not only many adverse factors such as progress, safety, etc., but also the risk of cost input and an increase in the amount of work. If the scheme is only used, the construction work amount is increased, the construction progress is seriously influenced, and the personal safety of workers cannot be correspondingly guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an adaptation country rock wide range, the excavation energy consumption is low, the dust is few, excavates the tunnel construction that efficient and excavation in-process need not change outfit with multi-functional non-explosive excavation equipment of full section.

Therefore, the utility model discloses the technical scheme who adopts does: a full-section multifunctional non-explosive excavating device for tunnel construction comprises a base, a travelling mechanism and a cantilever assembly, wherein the cantilever assembly comprises a large arm support, a large arm oil cylinder, a small arm and a small arm oil cylinder, the lower end of the large arm is hinged to the large arm support, the upper end of the large arm is hinged to the lower end of the small arm, the lower end of the large arm oil cylinder is mounted on the large arm support, the upper end of the large arm oil cylinder is mounted on the outer wall of the large arm, the lower end of the small arm oil cylinder is mounted on the outer wall of the large arm, and the upper end of the small arm oil cylinder is mounted on the outer wall of the small arm; the hydraulic impact rock breaking device also comprises a main rotary worktable, a hydraulic impact rock breaking mechanism and a stable support telescopic leg;

the large arm support is obliquely arranged on a front inclined plane of the main rotary worktable and can do rotary motion around a first rotary center vertical to the front inclined plane, and the main rotary worktable is vertically arranged on the base and can do rotary motion around a second rotary center vertically arranged;

the hydraulic impact rock breaking mechanism comprises an impactor, an impact oil cylinder and a digging cutter arranged at the front end of the impactor, the middle part of the impactor is hinged and arranged at the upper end of the small arm, the upper end of the impact oil cylinder is arranged at the rear end of the impactor, and the lower end of the impact oil cylinder is arranged on the outer wall of the small arm;

the full-section multifunctional non-explosive excavation equipment for tunnel construction can be continuously changed among a horizontal working state, a maximum elevation working state and a maximum depression angle maximum elevation working state, and the included angle between the maximum elevation working state and the maximum depression angle working state is not less than 180 degrees.

Preferably, when the large arm oil cylinder is in a set maximum extension state, the small arm oil cylinder is in a set maximum extension state, and the impact oil cylinder is in a set minimum extension state, the small arm is positioned on an extension line of the large arm, and the hydraulic impact rock breaking mechanism is in a horizontal working state; when the large arm oil cylinder is in a set maximum extension state, the small arm oil cylinder is in a set rear side minimum extension state, and the impact oil cylinder is in a set minimum extension state, the upper end of the small arm rotates to a maximum set angle towards the rear side relative to the lower end, and the hydraulic impact rock breaking mechanism is in a maximum elevation working state; when the large arm oil cylinder is in a set minimum extension state, the small arm oil cylinder is in a set front side minimum extension state, and the impact oil cylinder is in a set maximum extension state, the upper end of the small arm rotates forwards to a maximum set angle relative to the lower end, and the hydraulic impact rock breaking mechanism is in a maximum depression angle working state.

Preferably, a cross beam is fixedly arranged behind the base, one end of each of the stably-supported telescopic legs is hinged to the tail end of the cross beam, and the other end of each of the stably-supported telescopic legs is supported on the ground of the tunnel or the side wall of the tunnel through rotation.

Further preferably, the running mechanism adopts a crawler-type running mechanism, the cross beam is erected between the two crawler belts, a scraper conveyor is further arranged between the running mechanism and the base, and the front end and the rear end of the scraper conveyor extend to the outside of the running mechanism and are used for conveying excavated dregs. The muck generated in the excavation process just falls at the front end of the scraper conveyor, and the scraper conveyor can finish the outward transportation of the muck in time so as to save space.

Preferably, the number of the large arm oil cylinders is one, the large arm oil cylinders are located below the large arm, the number of the small arm oil cylinders is two, the small arm oil cylinders are symmetrically arranged on the left side and the right side of the small arm, the number of the impact oil cylinders is two, the impact oil cylinders are symmetrically arranged on the left side and the right side of the impactor, and the two small arm oil cylinders and the two impact oil cylinders are arranged in a staggered mode. The optimized arrangement avoids interference, and the structure is compact and the occupied space is small.

Preferably, the rotation motion angle of the main rotary table around the second rotation center is 220 ± 20 °, and the included angle between the rotation of the small arm to the maximum setting angle towards the rear side and the rotation to the maximum setting angle towards the front side is 60 ± 5 °; the space behind the equipment is excavated, the rotation angle is optimized, the efficiency is further improved, and the control is convenient.

The utility model has the advantages that:

(1) the utility model discloses mainly be less than or equal to the stratum construction within 150MPa to rock unipolar compressive strength, realize the non-blasting excavation in tunnel, it is big to adapt to excavation country rock scope.

(2) The excavating equipment is applied to construction, when surrounding rock conditions are suitable for excavation, the impactor is not started, the excavating cutter is directly used for excavating, and muck is output by combining with a scraper conveyor, when the surrounding rock is not suitable for direct excavation, the impactor is started to impact and break the rock, so that the surrounding rock is loosened, the excavating cutter is used for excavating, the rock is broken by using a point-to-break surface principle, secondary reloading is not needed for impact rock breaking and excavating construction, and the construction efficiency is greatly saved;

(3) the excavating equipment combines the combined action of the impactor and the excavating cutter, and only splits the lithology of the tunnel face in the impact rock breaking process and the excavating process, so that the energy consumption is low, the dust is small, the construction efficiency is high, and the excavating equipment is environment-friendly and economical;

(4) the excavating equipment is combined with a vertical and an inclined rotating center to do rotating motion, and the arrangement and control of the oil cylinders are optimized, so that the flexibility in the excavating process is increased, the excavating angle with large degree of freedom is realized, the excavating equipment has the characteristics of wide excavating surface and moderate overall size, has remarkable advantages in the excavating height range compared with the existing excavating equipment, and can perform tunnel full-section excavation;

(5) the stable support telescopic legs are additionally arranged and rotatably supported on the ground or the side wall of the tunnel, so that the machine body is stabilized during the operation of surrounding rocks and cambered surfaces with high crushing strength, the impact force from an impact end can be borne, the self-stability of equipment in the excavation process is ensured, and the hinged installation mode is convenient for folded transportation; the stable support telescopic leg not only plays a supporting role, but also is used as a device for adjusting the working space;

(6) the equipment has the capability of impacting rock breaking to change along with the change of the posture of the equipment, multiple mechanisms are utilized to perform cooperation work, finally, the full-section excavation is realized, and the loading device can realize the full-section excavation of the front tunnel by rotating and excavating at the same time.

Drawings

Fig. 1 shows the present invention in a horizontal working state.

Fig. 2 shows the present invention in the maximum elevation working state.

Fig. 3 shows the state of the present invention in the maximum depression angle operation.

Detailed Description

The invention will be further described by way of examples with reference to the accompanying drawings:

as shown in figure 1, the full-section multifunctional non-explosive excavation equipment for tunnel construction mainly comprises a base 1, a travelling mechanism 2, a large arm support 3, a large arm 4, a large arm oil cylinder 5, a small arm 6, a small arm oil cylinder 7, a main rotary table 8, an impactor 9, an impact oil cylinder 10, an excavating tool 11, a stable support telescopic leg 12, a cross beam 13 and a scraper conveyor 14.

The large arm support 3, the large arm 4, the large arm oil cylinder 5, the small arm 6 and the small arm oil cylinder 7 form a cantilever assembly. The lower end of the large arm 4 is hinged on the large arm support 3, and the upper end of the large arm 4 is hinged with the lower end of the small arm 6. The lower end of the large arm oil cylinder 5 is installed on the large arm support 3, the upper end of the large arm oil cylinder 5 is installed on the outer wall of the large arm 4, the lower end of the small arm oil cylinder 7 is installed on the outer wall of the large arm 4, and the upper end of the small arm oil cylinder 7 is installed on the outer wall of the small arm 6.

The main rotary table 8 is provided with a front inclined surface for mounting the large arm support 3, and the large arm support 3 is obliquely mounted on the front inclined surface of the main rotary table 8 and can perform rotary motion around a first rotary center a perpendicular to the front inclined surface. The main rotary table 8 is vertically installed on the base 1 and can rotate around a second rotation center b which is vertically arranged. Namely, the first revolution center a and the second revolution center b form an included angle. The angle of the rotary motion of the main rotary table 8 around the second rotation center b is preferably 220 ± 20 °, and the left-right rotation can be completed by 110 ± 10 °. The included angle between the rotation of the small arm 6 to the maximum set angle towards the rear side and the rotation to the maximum set angle towards the front side is 60 +/-5 degrees.

The impactor 9, the impact oil cylinder 10 and the digging tool 11 form a hydraulic impact rock breaking mechanism. The excavating tool 11 is mounted to the front end of the impactor 9, and is preferably, but not limited to, a chisel as a main tool for excavating the rock. The middle part of the impactor 9 is hinged and arranged at the upper end of the small arm 6, the upper end of the impact oil cylinder 10 is arranged at the rear end of the impactor 9, and the lower end of the impact oil cylinder 10 is arranged on the outer wall of the small arm 6.

The full-section multifunctional non-explosive excavation equipment for tunnel construction can be continuously changed among a horizontal working state, a maximum elevation angle working state and a maximum depression angle maximum elevation angle working state, and the included angle between the maximum elevation angle working state and the maximum depression angle working state is not less than 180 degrees.

A cross beam 13 is fixedly arranged behind the base 1, one end of a stable support telescopic leg 12 is hinged to the tail end of the cross beam 13, and the other end of the stable support telescopic leg is supported on the ground of the tunnel or the side wall of the tunnel through rotation.

The non-explosive excavating device has three limit working positions: (1) when the large arm cylinder 5 is in a set maximum extension state, the small arm cylinder 7 is in a set maximum extension state, and the impact cylinder 10 is in a set minimum extension state, the small arm 6 is positioned on an extension line of the large arm 4, and the hydraulic impact rock breaking mechanism is in a horizontal working state, as shown in fig. 1. (2) When the large arm cylinder 5 is in a set maximum extension state, the small arm cylinder 7 is in a set rear side minimum extension state, and the impact cylinder 10 is in a set minimum extension state, the upper end of the small arm 6 rotates to a maximum set angle towards the rear side relative to the lower end, and the hydraulic impact rock breaking mechanism is in a maximum elevation angle working state, as shown in fig. 2. (3) When the large arm cylinder 5 is in the set minimum extension state, the small arm cylinder 7 is in the set front side minimum extension state, and the impact cylinder 10 is in the set maximum extension state, the upper end of the small arm 6 rotates to the maximum set angle toward the front side relative to the lower end, and the hydraulic impact rock breaking mechanism is in the maximum depression angle working state, as shown in fig. 3.

The running mechanism 2 is a main component for realizing the translation of the full-section multifunctional non-explosive excavation equipment for tunnel construction, the running mechanism is placed on the ground, and preferably, the running mechanism 2 adopts a crawler-type running mechanism. The beam 13 is erected between the two tracks, a scraper conveyor 14 is further arranged between the travelling mechanism 2 and the base 1, and the front end and the rear end of the scraper conveyor 14 extend to the travelling mechanism 2 and are used for conveying excavation residue soil.

In addition, the number of the large arm oil cylinders 5 is one, the number of the small arm oil cylinders 7 is two, the small arm oil cylinders are symmetrically arranged on the left side and the right side of the small arm 6, the number of the impact oil cylinders 10 is two, the impact oil cylinders are symmetrically arranged on the left side and the right side of the impactor 9, and the two small arm oil cylinders 7 and the two impact oil cylinders 10 are arranged in a staggered mode.

The left and right sides of the stable support telescopic leg 12 are provided with two sets, and each set comprises a jacking upright post, a height sensor and a hydraulic control valve. The function is that the installation professional equipment supports stable device. After the equipment is in place, the stable support telescopic legs extend out, the stable support telescopic legs are controlled by the hydraulic pump to support the equipment, and the supporting boots are stably supported on the ground under the driving of the supporting oil cylinders. The height sensor is used for detecting jacking height and supporting pressure, and the electric control system controls the hydraulic proportional valve in a closed loop mode according to detection data of the height sensor, so that the synchronism and reliability of the left and right sets of stable supporting telescopic legs are guaranteed. The supporting oil cylinder is provided with a hydraulic lock, so that the safety of the supporting system is ensured. Adopt hydraulic pressure proportional valve and distance sensor cooperation to adjust hydraulic pressure oil flow and pressure, accomplish the synchronism of exhibition arm and broken rock, thereby whole platform equipment provides the energy through power module and makes dust removal, slag tap, broken rock formula as an organic whole function when carrying out above action, guarantees the synchronism and the harmony of mechanism's motion through PLC module encoder to accomplish non-explosive excavation work.

The excavation equipment is provided with a travelling mechanism, so that the working surface can be quickly switched; the scraper conveyor can timely convey out the residue soil generated in the excavation process; preferably, the construction environment quality can be effectively controlled by a dust removal and dust fall system (not shown in the figure). The impact crushing principle is adopted for harder surrounding rocks, and the soft surrounding rocks are directly hooked and dug. When the hooking and digging can not meet the requirement of construction, the impact device is started, and when the impact power is large, the stable support telescopic legs 12 are adopted to ensure the stability of the machine body. Full section non-explosive excavation equipment can walk when the excavation, turns to, realizes the excavation operation fast, not only can effectually realize functions such as tunnel non-explosive excavation, rotation, walking, dust removal to install scram device and ensure operation safety, control excavation quality and personnel remote operation function that can be fine. Can realize safe quick construction through remote control, walking, rotation, dust removal etc to reduce construction period by a wide margin, control operation environment, this equipment is applicable to the tunnel excavation section of various different structures moreover.

In order to realize the operation of the whole system, a power motor, a rotary speed reducing mechanism, a PLC control module, a pump station, a rock breaking impact system, a hydraulic control system, an electrical control system and the like are required to be arranged. The PLC control module can adopt a multipoint integrated control system for operating an action to finish a set action (excavation depth control according to needs) by one key, and belongs to an integrated control technology. And a visual monitoring system is also arranged on the equipment, so that remote operation can be realized. Each oil cylinder is provided with a hydraulic lock, so that reliable positioning of the oil cylinder is guaranteed, and the hydraulic oil cylinder is a main bearing part for operation and transportation of equipment.

The control system is mainly divided into a hydraulic system and an electric control system, the whole full-section multifunctional non-explosive excavating equipment is provided with a hydraulic lock, a sensor, a proportional valve, an encoder, a multi-stage oil cylinder and a pipeline, and a hydraulic power source is provided from the outside to complete the actions of all parts. In order to ensure the safety and stability of the synchronous walking of the equipment, the motors of the electric control system are motors with the same type power, the selection types of the speed reducers are completely consistent, and the encoders are configured to ensure the synchronism of the two sides of the walking mechanism.

The size of the whole set of equipment mechanism is 12000mm multiplied by 3500mm multiplied by 2680mm, the impact rock breaking capacity is 100T, the operation radius is 7000mm, and the rock breaking speed is 80m³The impact frequency is 102, the traveling speed of the cart is 120m/min, and various surrounding rocks with the uniaxial compressive strength of rocks less than or equal to 150MPa can be effectively broken.

The excavation equipment is comprehensive tunnel full-section excavation equipment integrating machinery, electricity and hydraulic pressure, can be intelligently controlled and detected, is very suitable for non-explosive excavation work, can shorten the construction period, reduces the total cost, can improve the safety and reliability in the construction process, reduces the difficult problem of procedure adaptation and saves human resources.

Claims

1. The full-section multifunctional non-explosive excavating equipment for tunnel construction comprises a base (1), a walking mechanism (2) and a cantilever assembly, wherein the cantilever assembly comprises a large arm support (3), a large arm (4), a large arm oil cylinder (5), a small arm (6) and a small arm oil cylinder (7), the lower end of the large arm (4) is hinged to the large arm support (3), the upper end of the large arm (4) is hinged to the lower end of the small arm (6), the lower end of the large arm oil cylinder (5) is mounted on the large arm support (3), the upper end of the large arm oil cylinder (5) is mounted on the outer wall of the large arm (4), the lower end of the small arm oil cylinder (7) is mounted on the outer wall of the large arm (4), and the upper end of the small arm oil cylinder (7) is mounted on the outer wall of the small arm (6); the method is characterized in that: the hydraulic impact rock breaking machine also comprises a main rotary worktable (8), a hydraulic impact rock breaking mechanism and a stable support telescopic leg (12);

the large arm support (3) is obliquely arranged on a front inclined plane of the main rotary worktable (8) and can rotate around a first rotation center (a) vertical to the front inclined plane, and the main rotary worktable (8) is vertically arranged on the base (1) and can rotate around a second rotation center (b) vertically arranged;

the hydraulic impact rock breaking mechanism comprises an impactor (9), an impact oil cylinder (10) and a digging cutter (11) arranged at the front end of the impactor (9), the middle part of the impactor (9) is hinged to the upper end of the small arm (6), the upper end of the impact oil cylinder (10) is arranged at the rear end of the impactor (9), and the lower end of the impact oil cylinder (10) is arranged on the outer wall of the small arm (6);

2. The full-face multifunctional non-explosive excavation equipment for tunnel construction according to claim 1, characterized in that: when the large arm oil cylinder (5) is in a set maximum extension state, the small arm oil cylinder (7) is in a set maximum extension state, and the impact oil cylinder (10) is in a set minimum extension state, the small arm (6) is positioned on an extension line of the large arm (4), and the hydraulic impact rock breaking mechanism is in a horizontal working state; when the large arm oil cylinder (5) is in a set maximum extension state, the small arm oil cylinder (7) is in a set rear side minimum extension state, and the impact oil cylinder (10) is in a set minimum extension state, the upper end of the small arm (6) rotates to a maximum set angle towards the rear side relative to the lower end, and the hydraulic impact rock breaking mechanism is in a maximum elevation working state; when the large arm oil cylinder (5) is in a set minimum extension state, the small arm oil cylinder (7) is in a set front side minimum extension state, and the impact oil cylinder (10) is in a set maximum extension state, the upper end of the small arm (6) rotates to a maximum set angle towards the front side relative to the lower end, and the hydraulic impact rock breaking mechanism is in a maximum depression angle working state.

3. The full-face multifunctional non-explosive excavation equipment for tunnel construction according to claim 1 or 2, characterized in that: the rear of the base (1) is fixedly provided with a cross beam (13), one end of each stable support telescopic leg (12) is hinged to the tail end of the cross beam (13), and the other end of each stable support telescopic leg is supported on the ground of the tunnel or the side wall of the tunnel through rotation.

4. The full-face multifunctional non-explosive excavation equipment for tunnel construction according to claim 3, characterized in that: the large arm oil cylinders (5) are arranged one by one and located below the large arm (4), the small arm oil cylinders (7) are arranged two by two and symmetrically arranged on the left side and the right side of the small arm (6), the impact oil cylinders (10) are arranged two by two and symmetrically arranged on the left side and the right side of the impactor (9), and the two small arm oil cylinders (7) and the two impact oil cylinders (10) are arranged in a staggered mode inside and outside.

5. The full-face multifunctional non-explosive excavation equipment for tunnel construction according to claim 3, characterized in that: running gear (2) adopt crawler-type running gear, crossbeam (13) erect between two tracks, still are provided with scraper conveyor (14) between running gear (2) and base (1), and the preceding, the back both ends of scraper conveyor (14) all extend to running gear (2) and are used for carrying excavation dregs.

6. The full-face multifunctional non-explosive excavation equipment for tunnel construction according to claim 3, characterized in that: the main rotary table (8) rotates around a second rotary center (b) at a rotary motion angle of 220 +/-20 degrees, and the included angle between the rotation of the small arm (6) to the maximum set angle towards the rear side and the rotation of the small arm to the maximum set angle towards the front side is 60 +/-5 degrees.

7. The full-face multifunctional non-explosive excavation equipment for tunnel construction according to claim 3, characterized in that: the left and right sides of the stable support telescopic legs (12) are provided with two sets, and each set comprises a jacking upright post, a height sensor and a hydraulic control valve.