A multi-functional tunneling jumbo

Abstract

The present invention discloses a multi-functional tunneling jumbo, which comprises a self-propelled chassis. At least one first guiding roller or wire rope guiding wheel with a horizontal axis is arranged below the abdomen of the self-propelled chassis. Preferably, the self-propelled chassis is of a crawler structure and comprises a main carrier platform and a frame. A first guiding roller is arranged at each of the front and rear ends of the frame. The multi-functional tunneling jumbo further comprises two second guiding rollers, and the two second guiding rollers and the first guiding rollers form a portal frame structure, and a space for the scraper of a scraper loader to pass through is provided inside the portal frame. A retractable hydraulic shovel is further arranged at each of the front and rear ends of the frame. When the hydraulic shovel is lowered, it is used to push obstacles in front of the jumbo. When the hydraulic shovel is retracted, a space with a set height is provided below it, and the hydraulic shovel can also be used to lift one end of the jumbo. The beneficial effect of the present invention is that during the process of raking gangue into the loader and loading, the tunneling jumbo does not need to withdraw, let alone meet or give way to other vehicles, which greatly improves the loading efficiency and further improves the roadway tunneling efficiency.

Description

Technical Field

[0001] The present invention relates to underground coal seam mining facilities, and particularly to a multi-functional tunneling jumbo. Background Art

[0002] The main operations in coal mine rock roadway tunneling include advanced geological drilling construction and roadway construction, etc. Generally, a full-hydraulic drill is used for advanced geological drilling. Due to the limitations of the rock loading and transportation equipment and environmental conditions, only drills with light weight and small power can be used. Moreover, the time for the drill to enter and exit the tunneling face is long, the labor intensity is high, the drilling speed is slow, and the comprehensive efficiency is low. The roadway tunneling process mainly adopts the drill and blast method for construction and a wire rope rock loader for mucking. The excavation of the roadway by the drill and blast method mainly focuses on the operations of drilling and blasting. The drilling methods include manual pneumatic hammer drilling and mechanical drilling by a rock drilling jumbo. The manual pneumatic hammer drilling has a slow speed, high labor intensity of workers, and low efficiency. The mechanical drilling by a rock drilling jumbo has a fast speed and high efficiency, which is 2-3 times that of the manual pneumatic hammer drilling. However, due to the defects of the rock drilling jumbo itself and the limitations of environmental conditions, it still cannot meet the needs of tunneling in small and medium-sized cross-section roadways. Currently, there are mainly two aspects that affect the use of the tunneling rock drilling jumbo in small and medium-sized cross-section roadways. One is that the working mechanism of the rock drilling jumbo for drilling is long, while the roadway width is small, which is not conducive to constructing the cut holes for forming a free face, resulting in poor blasting effect and low cycle progress. The other is that the design of the rock drilling jumbo and the design of the rock loader are not scientifically matched, with low efficiency. The rock drilling jumbo is divided into a tunneling drill jumbo and a drill loader with integrated rock loading and drilling. The tunneling drill jumbo must cooperate with a rock loader to complete the tunneling process of the roadway to form the roadway. Currently, the current tunneling drill jumbo and the rock loading equipment are not matched. Before mucking after blasting, the tunneling drill jumbo must retreat to the rear of the rock loader for the rock loader to muck. In the tunneling of small and medium-sized cross-section roadways, due to the narrow roadway, the tunneling drill jumbo and the rock loader cannot normally pass each other. For the tunneling drill jumbo to withdraw, the rock loader must first be withdrawn to a large cross-section roadway. After the tunneling drill jumbo withdraws, the rock loader can return to its original position to muck. The operation is very complex, time-consuming, and has low efficiency. At the same time, due to the unevenness of the roadway floor after the rock loader mucks out the ore, the tunneling drill jumbo walks unsteadily and is unsafe. It is necessary to manually level the floor while walking, otherwise it is easy to cause rollover and damage to equipment, pipelines, and air ducts, resulting in safety accidents. Therefore, the tunneling drill jumbo cannot adapt to drilling in small and medium-sized cross-section roadways. The drill loader is designed to integrate rock loading and drilling, but to play its role and achieve the design effect, it must be equipped with a reliable continuous transportation system. However, most coal mine roadways do not have the conditions for continuous transportation. At the same time, since the rock loading and drilling operations of the drill loader cannot be carried out in parallel, the efficiency is also too low, and the drill loader cannot meet the needs of tunneling. Therefore, it is necessary to improve the existing tunneling equipment. Summary of the Invention

[0003] The purpose of the present invention is to address the deficiency in the prior art that the rock excavation equipment needs to be withdrawn before the rock rake can be used to rake the gangue, and to provide a multifunctional excavation trolley. The equipment arranges a wire rope guiding component under the belly of the trolley so that when the rock rake loader is raking the rock, the wire rope, or the wire rope and the rake bucket can pass smoothly from under the bottom of the vehicle, thereby realizing the raking of gangue and subsequent transfer of gangue without withdrawing the trolley.

[0004] To achieve the aforementioned objectives, the present invention adopts the following technical solutions.

[0005] A multifunctional excavation trolley comprises a self-propelled chassis. A first guide roller or a wire rope guide wheel with at least one axis arranged horizontally is provided below the belly of the self-propelled chassis.

[0006] The present invention adopting the above-mentioned technical scheme has a first guide roller or a wire rope guide wheel under the belly of the self-propelled chassis of the excavation trolley. In the scheme adopting the wire rope guide wheel, the wire rope main rope of the bucket loader can be guided by the wire rope guide wheel to pass under the belly of the trolley to avoid scratching the trolley. After the trolley operation is completed, the trolley moves forward for a distance, so that part of the gangue is exposed behind the trolley. After the main wire rope of the bucket of the bucket loader passes through the hanging wheel on the rock wall in front of the vehicle, it passes under the belly of the trolley. The bucket of the bucket loader can rake and transport gangue between the trolley and the bucket loader, thereby eliminating the merging link between the trolley and the bucket loader, and the gangue can be raked and transferred smoothly. In the scheme of setting the first guide roller, since the roller has a sufficient length and there is a sufficient width and height space under the belly of the vehicle, the bucket can pass under the belly of the vehicle. In this way, after the trolley operation is completed, the guide structure of the roller can be used, not only the main wire rope can pass smoothly, but the bucket can also make full use of the rolling characteristics of the roller to contact the roller surface and pass smoothly. Therefore, without the need to move the trolley, the bucket can rake the gangue from the front of the trolley through the space under the belly of the vehicle, and then rake it into the trough of the bucket loader. Therefore, when using this trolley for tunnel excavation, the excavation trolley does not need to withdraw after the operation, and there is no need to merge with the bucket loader or give way to each other, and the gangue loading can be completed, which greatly improves the loading efficiency and tunnel excavation efficiency. Among them, when the roller scheme is adopted, the roller can adopt a grooved wheel structure.

[0007] Preferably, a first guide roller or a wire rope guide wheel is provided at each of the front and rear ends of the self-propelled chassis; and a wire support wheel or a support roller is provided above the self-propelled chassis. This further enhances the guiding effect of the wire rope or the rake bucket, improves the operating reliability of the rock rake, and in addition, the wire support wheel can prevent the wire rope tail rope located above the trolley from scratching the equipment on the vehicle, ensuring safety.

[0008] Preferably, in the solution where the first guiding roller is arranged under the abdomen of the self - propelled chassis, there are also two second guiding rollers. The two second guiding rollers can be retracted upward, and after the two second guiding rollers are lowered, they form a portal frame structure with the first guiding roller, and there is a passing space for the scraper of the scraper loader within the portal frame. In this solution, after the operation of the tunneling jumbo is completed, when the space under the abdomen of the jumbo is large enough, the jumbo does not need to move, and the scraper of the scraper loader can rake the gangue from the front of the jumbo into the trough of the scraper loader behind the jumbo, further improving the roadway tunneling efficiency; or only the first guiding roller and the two second guiding rollers after turning down can form a wire rope guiding structure to prevent the wire rope from swinging, and the scraper does not need to pass through the space under the vehicle abdomen; the second guiding rollers are retracted upward to increase the ground clearance of the self - propelled chassis, facilitating driving on the gangue pile, so as to facilitate the scraper to rake the gangue from the rear of the vehicle into the trough of the scraper loader. Among them, the retracting method of the second guiding rollers includes retracting upward by vertical movement and retracting upward by rotation, which is selected according to the specific installation space of the vehicle suspension and frame structure.

[0009] Preferably, a retractable hydraulic shovel is provided at each of the front and rear ends of the self - propelled chassis. The hydraulic shovel is used to push the obstacles in front of the vehicle when it is lowered, and there is a space with a set height below when it is retracted. To form a self - obstacle - clearing structure on the jumbo that can perform self - obstacle - clearing, ensure the smoothness of the road it travels on, and ensure driving safety. Among them, the lifting height of the hydraulic shovel can have a corresponding height according to the requirements of the specific solution. For example, when the scraper needs to pass under the vehicle abdomen, its height should be slightly higher than the height when only the wire rope passes.

[0010] Preferably, a rock drilling main machine and / or a drilling main machine are provided on the self - propelled chassis. To form a multi - functional integrated jumbo structure that can perform rock drilling, drilling, or integrate the functions of both, and can perform obstacle clearing and allow the scraper to pass under the abdomen, further improving the roadway tunneling efficiency.

[0011] Further preferably, a hydraulic system and an operation control system are provided on the self - propelled chassis. To integrate power and operation into one, ensure complete functions and convenient operation.

[0012] Further preferably, the self - propelled chassis is of a crawler structure, including a main vehicle platform and a vehicle frame. The vehicle frame is provided with crawlers through a suspension; the first guide roller is arranged on the vehicle frame; in the solution with two second guide rollers, the second guide rollers are abutted against the crawler suspension of the vehicle frame; in the solution with a hydraulic shovel, the hydraulic shovel is also arranged through the vehicle frame. Utilizing the characteristics of a crawler vehicle with a large load - bearing capacity, a heavy chassis, and strong obstacle - crossing ability, the vehicle passability and the safety of tunneling work are ensured. Additionally, in the solution with a hydraulic shovel, by taking advantage of the characteristics of a crawler vehicle frame with good rigidity and high strength, the connection strength of the hydraulic shovel is ensured, and its service life is long. So that when the crawler encounters an obstacle and is blocked, the vehicle end can be lifted by means of the hydraulic shovel to enhance the obstacle - crossing ability.

[0013] Further preferably, the rock - drilling main machine includes a rock - drill, the rock - drill is connected with a thruster, the thruster is installed on a thruster bracket, and the thruster bracket is connected to the front end of a robotic arm; the rear end of the robotic arm is connected to a slewing arm seat, and the slewing arm seat is longitudinally movably arranged on the main vehicle platform through a rock - drilling slideway. The robotic arm has a horizontal rotation structure, an axial telescopic structure, and a pitching angle adjustment structure. To meet the requirements of multi - directional and multi - angle rock - drilling, ensure complete functions, and meet the requirements of roadway tunneling.

[0014] Further preferably, the drilling main machine includes a power head, a hydraulic gripper, and a propulsion cylinder; both the power head and the hydraulic gripper are arranged on a guide rail, the hydraulic gripper is located in front of the power head, and the guide rail is arranged on a stabilizing and adjusting device; the stabilizing and adjusting device is installed at a position near the front end of the main vehicle platform. To meet the requirements of multi - directional and multi - angle drilling, ensure complete functions, and meet the requirements of roadway tunneling.

[0015] Further preferably, in the solution with a rock - drilling main machine and a drilling main machine, the rock - drilling main machine and the drilling main machine are distributed on both sides of the main vehicle platform. To form a relatively balanced center - of - gravity structure and ensure the safety of the trolley walking and tunneling work.

[0016] The beneficial effects of the present invention: During the process of loading the muck with a muck - raking loader, the tunneling trolley does not need to withdraw, let alone meet or give way to the scraper loader, which greatly improves the loading efficiency and thus improves the roadway tunneling efficiency. The comprehensive trolley integrates rock - drilling, drilling, muck - pushing, and rope - passing functions, which can effectively promote the improvement of the mechanization level of full - rock roadway tunneling in Chinese coal mines and solve the technical problem of how to form a good supporting system between the comprehensive tunneling equipment and the mucking machine and the mucking winch. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic front view of a partial structure of the present invention, in which the second guide roller is in a lowered state.

[0018] Figure 2 It is a schematic front view of a partial structure of the present invention, in which the second guide roller is in a retracted state.

[0019] Figure 3 This is the main structural schematic view of the present invention.

[0020] Figure 4 For the present invention Figure 3 is the top view. Specific embodiments

[0021] The present invention will be further described below with reference to the accompanying drawings. The embodiments are exemplary and are only used to disclose and explain the present invention so as to fully understand the present invention, but the present invention is not limited to the scope of the described embodiments.

[0022] Embodiment 1, see Figure 1 , Figure 2 , Figure 3 , Figure 4 , a multi-functional tunneling jumbo, including a self-propelled chassis. At least one first guiding roller 2 with a horizontal axis is provided below the abdomen at the front and rear ends of the self-propelled chassis; and the self-propelled chassis has a crawler structure, including a main carrier platform 1 and a frame 6. The frame 6 is provided with crawlers through a suspension 61.

[0023] As a preferred solution, it further includes two second guiding rollers 3. The two second guiding rollers 3 are located between two parallel crawlers, and a wire rope idler 5 or a roller is provided above the main carrier platform 1 through a carrier roller bracket 7. The carrier roller bracket 7 is hinged on the main carrier platform 1 and is driven by a bracket oil cylinder to be erected or laid down; the two second guiding rollers 3 can be vertically moved up and retracted, and after the two second guiding rollers 3 are laid down, a gantry frame structure formed with the first guiding roller 2 is formed, and a space for the scraper of the scraper loader to pass through is provided inside the gantry frame. Among them, the second guiding roller 3 is provided through a U-shaped roller support 31. The bottom surface of the roller support 31 abuts against the suspension 61, and the other end is connected to the frame 6 through a retracting and extending hydraulic cylinder 32 to be retracted or lowered upward through the telescopic movement of the piston rod of the retracting and extending hydraulic cylinder 32.

[0024] As a preferred solution, a retractable hydraulic shovel 4 is further provided at each of the front and rear ends of the frame 6. The hydraulic shovel 4 is used to push obstacles in front of the vehicle when it is lowered, and when it is retracted, there is a space with a set height below. The upper part of the tail end of the hydraulic shovel 4 is hinged to the frame 6, and a retracting and extending oil cylinder 4a is provided between the middle part of the hydraulic shovel 4 and the frame 6. When the piston rod of the oil cylinder 4a extends, the hydraulic shovel 4 is lifted and retracted. When it retracts, the hydraulic shovel 4 is lowered to form a pushing shape to push the parallel vehicle road; and the corresponding end of the vehicle can be lifted by continuously retracting the piston rod of the oil cylinder 4a, so that the corresponding end of the crawler is upturned and separated from the ground to improve the obstacle crossing ability.

[0025] As a preferred solution, the foregoing rock drilling main machine 100 includes a rock drill 101, the rock drill 101 is connected to a thruster 102, the thruster 102 is installed on a thruster bracket 103, and the thruster bracket 103 is connected to the front end of a robotic arm 104; the rear end of the robotic arm 104 is connected to a slewing arm base 105, and the slewing arm base 105 is longitudinally movably arranged on the main machine platform 1 through a rock drilling slideway. The robotic arm 104 has a horizontal rotation structure, an axial telescopic structure, and a pitching angle adjustment structure. The drilling main machine 200 includes a power head 201, a hydraulic chuck 202, and a propulsion cylinder 203; both the power head 201 and the hydraulic chuck 202 are arranged on a guide rail 204, the hydraulic chuck 202 is located in front of the power head 201, and the guide rail 204 is arranged on a stable adjustment device 205; the stable adjustment device 205 is installed at a position near the front end of the main machine platform 1. The rock drilling main machine 100 and the drilling main machine 200 are distributed on both sides of the main machine platform 1, and the idler wheel bracket 7 is erected in the middle of the main machine platform 1.

[0026] In this embodiment, the crawler self-propelled chassis can also be replaced by a wheeled vehicle chassis.

[0027] In this embodiment, when one end of the roller support 31 is hinged to the vehicle frame, the other end flips to realize the flip-type retraction and deployment of the second guide roller 3.

[0028] Embodiment 2. The main difference between this embodiment and Embodiment 1 is that at least one wire rope guide wheel with a horizontal axis is provided under the abdomen at the front and rear ends of the self-propelled chassis, and the guide wheel has a grooved wheel structure; under the abdomen of the trolley, only the wire rope for pulling the scraper can be used, and when in use, the scraper does not pass under the vehicle abdomen. The structure of this embodiment is not shown in the drawings.

[0029] The rest of the structure of this embodiment is the same as that of Embodiment 1 and will not be described in detail here.

[0030] When this trolley is in use, when blasting at the heading face, the multi-functional tunneling trolley stops in front of the scraper loader. After the working face is blasted, the gangue at the mucking head is concentrated and piled up in the roadway between about 8 meters behind the multi-functional tunneling trolley to the working face, leaving the working space for the tunneling trolley and personnel. At this time, the main rope of the scraper loader passes through the abdomen of the multi-functional tunneling trolley, and the tail rope passes through the upper roller of the trolley for mucking operation. After vacating the tunneling operation space, the tunneling trolley drives into the working face, and the scraper loader removes the stored gangue from the roadway. At this time, the scraper runs behind the tunneling trolley. Thus, the invention purpose of not requiring the tunneling trolley to meet or give way to the scraper loader is achieved.

[0031] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field according to the concept of the present invention through logical analysis, reasoning, or limited experiments on the basis of the prior art should fall within the protection scope determined by the claims.

Claims

1. A multi-functional tunneling jumbo, comprising a self-propelled chassis, characterized in that, At least one first guiding roller (2) or wire rope guiding wheel with a horizontal axis is provided under the abdomen of the self - propelled chassis. In the solution where the first guiding roller (2) is provided under the abdomen of the self - propelled chassis, two second guiding rollers (3) are further included. The two second guiding rollers (3) can be retracted upward, and after the two second guiding rollers (3) are lowered, a gantry frame structure formed with the first guiding roller (2) is formed, and a space for the scraper of the scraper loader to pass through is provided within the gantry frame; a first guiding roller (2) or wire rope guiding wheel is provided at each of the front and rear ends of the self - propelled chassis; and a wire rope supporting wheel (5) or a supporting roller is provided above the self - propelled chassis; a retractable hydraulic shovel (4) is further provided at each of the front and rear ends of the self - propelled chassis. The hydraulic shovel (4) is used to push obstacles in front of the vehicle when lowered, and there is a space with a set height below when retracted; the self - propelled chassis is of a crawler structure, including a main carrier platform (1) and a frame (6). The frame (6) is provided with crawlers through a suspension (61); the first guiding roller (2) is provided on the frame (6); in the solution where two second guiding rollers (3) are provided, the second guiding rollers (3) abut against the crawler suspension (61) of the frame (6); in the solution where the hydraulic shovel (4) is provided, the hydraulic shovel (4) is also provided through the frame (6); a rock drilling main machine (100) and / or a drilling main machine (200) is provided on the self - propelled chassis.

2. The multi-functional tunneling jumbo according to claim 1, characterized in that, A hydraulic system (300) and an operation control system (400) are provided on the self - propelled chassis.

3. The multi-functional tunneling jumbo according to claim 1, characterized in that, The rock drilling main machine (100) includes a rock drill (101). The rock drill (101) is connected to a thruster (102). The thruster (102) is installed on a thruster support (103). The thruster support (103) is connected to the front end of a robotic arm (104); the rear end of the robotic arm (104) is connected to a slewing arm base (105). The slewing arm base (105) is longitudinally movably provided on the main carrier platform (1) through a rock drilling slideway. The robotic arm (104) has a horizontal rotation structure, an axial telescopic structure, and a pitching angle adjustment structure.

4. The multi-functional tunneling jumbo according to claim 1, characterized in that, The drilling main machine (200) includes a power head (201), a hydraulic gripper (202), and a propulsion oil cylinder (203); the power head (201) and the hydraulic gripper (202) are both provided on a guide rail (204). The hydraulic gripper (202) is located in front of the power head (201). The guide rail (204) is provided on a stabilizing and adjusting device (205); the stabilizing and adjusting device (205) is installed at a position near the front end of the main carrier platform (1).

5. The multi-functional tunneling jumbo according to claim 1, characterized in that, In the solution having the rock drilling main machine (100) and the drilling main machine (200), the rock drilling main machine (100) and the drilling main machine (200) are distributed on both sides of the main carrier platform (1).

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