Tunneling cantilever and crushing type tunneling machine

Abstract

The utility model relates to the technical field of tunneling equipment, and particularly discloses a tunneling cantilever and a crushing type tunneling machine, the tunneling cantilever comprises a large arm with a first end connected with a chassis of the tunneling machine and a small arm connected with a second end of the large arm, the small arm is provided with a propelling platform, and the propelling platform is detachably connected with a front end crushing mechanism. The cantilever is detachably connected with the crushing mechanism, so that a worker can quickly replace a proper crushing mechanism according to the change of the hardness of tunneled rocks, and the tunnelling efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of tunneling equipment, and in particular to a tunneling boom and a crushing-type tunneling machine. Background Art

[0002] At present, the main method of tunnel excavation in mining on the market is drilling and blasting, supplemented by cantilever excavation. However, the restrictions on the use of explosives are becoming increasingly stringent. Many non-coal mines are facing the situation of suspension of work and production due to their inability to apply for mining blasting qualifications. Therefore, more and more customers are increasingly willing to look for non-explosive excavation equipment. The tunnel boring machine provided by the existing technology has a breaker hammer fixed on the cantilever frame, and the construction scenario of the breaker hammer is limited. Its excavation efficiency for soft rock non-coal mines including phosphate mines, lead and zinc mines is relatively low. In actual application, the construction party cannot flexibly replace the front-end crushing equipment according to the changes in rock hardness in the construction scenario, which not only reduces the efficiency of excavation construction, but also easily causes damage to the equipment. Utility Model Content

[0003] The purpose of this application is to provide a tunneling boom and a crushing tunneling machine, which, through the detachable connection between the boom and the crushing mechanism, allows workers to quickly replace the appropriate crushing mechanism according to changes in the hardness of the tunneling rock, thereby improving the tunneling efficiency.

[0004] The embodiment of the present application is implemented as follows:

[0005] In the first aspect, an embodiment of the present application provides a tunneling boom, comprising a large arm connected to a tunneling machine chassis at a first end and a small arm connected to the second end of the large arm, a propulsion platform being provided on the small arm, and a front-end crushing mechanism being detachably connected to the propulsion platform.

[0006] As an optional embodiment, the first end of the boom is hinged to the connecting frame installed at the front end of the tunnel boring machine chassis, and the second end of the boom is connected to the small arm through an intermediate mounting plate; it also includes a first telescopic drive component connected to the boom at the telescopic end, which is used to drive the boom to rotate relative to the connecting frame.

[0007] As an optional embodiment, the propulsion platform is provided with a sinking platform; the front end crushing mechanism is provided with a clamping portion, and the clamping portion is embedded in the sinking platform in a direction perpendicular to the propulsion platform; the clamping portion abuts against the inner wall of the sinking platform, generating a resisting force that prevents the front end crushing mechanism from moving in the plane where the propulsion platform is located.

[0008] As an optional embodiment, a plurality of connecting ears are arranged at intervals on the propulsion platform, and the connecting ears have a plug-in hole whose extension direction is parallel to the plane where the propulsion platform is located; it also includes a locking connecting shaft that passes through the plug-in hole and is plugged into the front end crushing mechanism, which is used to generate a force to prevent the clamping part from escaping from the sinking platform.

[0009] As an optional embodiment, a second telescopic drive member is installed on the forearm; the telescopic end of the second telescopic drive member is connected to the propulsion platform, which is used to drive the front end crushing mechanism to move along the front and rear direction of the tunnel boring machine chassis through the propulsion platform.

[0010] As an optional embodiment, it further includes a bucket mechanism; the bucket mechanism is installed on the forearm and is arranged at a position away from the front end crushing mechanism.

[0011] As an optional embodiment, the intermediate mounting plate is rotatably connected to the second end of the upper arm, and the second end of the upper arm is provided with a rotation drive module connected to the mounting plate, and the rotation drive module is used to drive the intermediate mounting plate to rotate.

[0012] As an optional embodiment, the front-end crushing mechanism includes any one of a breaker hammer, a high-frequency breaker hammer and a hydraulic splitter.

[0013] In the second aspect, an embodiment of the present application provides a crushing-type tunnel boring machine, comprising a tunnel boring machine chassis and the above-mentioned tunnel boring cantilever; the tunnel boring cantilever is installed at the front end of the traveling direction of the tunnel boring machine chassis; a shovel plate for collecting mineral materials is provided below the tunnel boring cantilever.

[0014] As an optional embodiment, it also includes a dust reduction device arranged on the chassis of the tunnel boring machine, and the dust reduction device is used to spray in front of the chassis of the tunnel boring machine; the dust reduction device includes a spray head and a water supply tank; the spray head is connected to the water supply tank through a connecting pipe.

[0015] The beneficial effects of the embodiments of the present application include:

[0016] On the first hand, an embodiment of the present application provides a tunneling boom, comprising a large arm connected to the chassis of a tunneling machine at a first end and a small arm connected to the second end of the large arm, a propulsion platform being provided on the small arm, and a front-end crushing mechanism being detachably connected to the propulsion platform. The embodiment of the present application enables the front-end crushing mechanism to be replaced according to different construction conditions through the detachable connection between the front-end crushing mechanism and the propulsion platform. When tunneling in rock formations of different hardness, the staff can quickly replace the corresponding front-end crushing mechanism according to the changes in the hardness of the rock formation, thereby solving the problem of rapid tunneling in rock formations of different hardness and improving construction efficiency. In addition, it can also cause wear to the mismatched front-end crushing mechanism in rock formations with excessive hardness, thereby increasing the service life of the front-end crushing mechanism.

[0017] Secondly, an embodiment of the present application provides a crushing tunnel boring machine, comprising a tunnel boring machine chassis and the aforementioned tunneling boom; the tunneling boom is mounted at the front end of the tunnel boring machine chassis in the direction of travel; and a shovel plate for collecting mineral materials is provided below the tunneling boom. The crushing tunnel boring machine of the embodiment of the present application adopts the aforementioned tunneling boom, and by detachably mounting the front-end crushing mechanism on the propulsion platform, the front-end crushing mechanism can be replaced when workers are faced with rock formations of varying hardness during construction. For soft rock with less hardness, a high-frequency hammer can be used for crushing, enabling rapid tunneling. For rock with greater hardness, a breaker hammer can be used for crushing, enabling stable and reliable tunneling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is one of the structural schematic diagrams of the crushing-type tunnel boring machine according to an embodiment of the present application;

[0020] Figure 2 This is the second structural diagram of the crushing tunnel boring machine according to the embodiment of the present application;

[0021] Figure 3 This is the third structural diagram of the crushing tunnel boring machine according to the embodiment of the present application;

[0022] Figure 4 This is the fourth structural diagram of the crushing tunnel boring machine according to an embodiment of the present application.

[0023] icon:

[0024] 100- tunneling boom; 101- boom; 102- first telescopic drive member; 103- connecting frame; 104- middle mounting plate; 105- small arm; 106- propulsion platform; 107- front end crushing mechanism; 108- bucket mechanism; 109- rotary drive module; 110- crushing type tunneling machine; 111- tunneling machine chassis; 112- shovel plate; 113- feed chute; 114- cab; 115- support frame; 116- sinking platform; 117- clamping part; 118- locking connecting shaft. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0027] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," "third," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0028] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0029] At present, the main method of tunnel excavation in mining on the market is drilling and blasting, supplemented by cantilever excavation. However, the restrictions on the use of explosives are becoming increasingly stringent. Many non-coal mines are facing the situation of suspension of work and production due to their inability to apply for mining blasting qualifications. Therefore, more and more customers are increasingly willing to look for non-explosive excavation equipment. The tunnel boring machine provided by the existing technology has a breaker hammer fixed on the cantilever frame, and the construction scenario of the breaker hammer is limited. Its excavation efficiency for soft rock non-coal mines including phosphate mines, lead and zinc mines is relatively low. In actual application, the construction party cannot flexibly replace the front-end crushing equipment according to the changes in rock hardness in the construction scenario, which not only reduces the efficiency of excavation construction, but also easily causes damage to the equipment.

[0030] In order to solve the above technical problems, an embodiment of the present application provides a tunneling boom 100 and a crushing tunneling machine 110.

[0031] Reference Figure 1 、 Figure 2 as well as Figure 3 As shown, an embodiment of the present application provides a tunneling boom 100, comprising a boom 101 connected to a tunneling machine chassis 111 at a first end and a forearm 105 connected to the second end of the boom 101, a propulsion platform 106 is provided on the forearm 105, and a front-end crushing mechanism 107 is detachably connected to the propulsion platform 106.

[0032] Among them, the first end of the boom 101 is hinged to the connecting frame 103 installed at the front end of the tunnel boring machine chassis 111, and the second end of the boom 101 is connected to the small arm 105 through the intermediate mounting plate 104; it also includes a first telescopic driving component 102 connected to the boom 101 at the telescopic end, which is used to drive the boom 101 to rotate relative to the connecting frame 103.

[0033] It should be noted that in the embodiment of the present application, the front end crushing mechanism 107 is detachably mounted on the propulsion platform 106. The front end crushing mechanism 107 can be fixed to the propulsion platform 106 by a bolt assembly. A quick-release connecting pin can also be used to fix the front end crushing mechanism 107 to the propulsion platform 106.

[0034] For example, refer to Figure 4 As shown, the propulsion platform 106 is provided with a sinking platform 116; the front end crushing mechanism 107 is provided with a clamping portion 117, which is embedded in the sinking platform 116 in a direction perpendicular to the propulsion platform 106; the clamping portion 117 abuts against the inner wall of the sinking platform 116, generating a resisting force that prevents the front end crushing mechanism 107 from moving in the plane where the propulsion platform 106 is located.

[0035] There are multiple connecting ears arranged at intervals on the propulsion platform 106, and the connecting ears have a plug-in hole whose extension direction is parallel to the plane where the propulsion platform 106 is located; it also includes a locking connecting shaft 118 that passes through the plug-in hole and is plugged into the front end crushing mechanism 107, which is used to generate a force to prevent the clamping part 117 from escaping the sinking platform 116.

[0036] As needed, bolts, quick-release pins or a combination of connection methods such as a snap connection can be used to realize the detachable connection of the front end crushing mechanism 107. Those skilled in the art can make settings as needed, and no special limitation is made here.

[0037] It should be noted that, since the front-end crushing mechanism 107 has a high vibration frequency when working and the reaction force transmitted by the rock wall is large, the front-end crushing mechanism 107 needs to achieve a stable and reliable detachable connection with the propulsion platform 106.

[0038] The tunneling boom 100 of the present embodiment includes a boom 101 mounted on a tunneling machine chassis 111 and a first telescopic drive member 102. The first end of the boom 101 is hingedly connected to a connecting frame 103 mounted at the front end of the tunneling machine chassis 111, and an intermediate mounting plate 104 is provided at the second end of the boom 101. The telescopic end of the first telescopic drive member 102 is connected to the boom 101 to drive the boom 101 to pitch and rotate about the hinged connection between the first end and the connecting frame 103.

[0039] Among them, one end of the first telescopic driving member 102 is hinged to the connecting frame 103, and the other end is hinged to the arm 101. The first telescopic driving member 102 drives the arm 101 to rotate up and down by telescoping, and at the same time realizes the up and down position control of the front end crushing mechanism 107.

[0040] The excavation boom 100 provided in the embodiment of the present application can realize multiple postures such as forward excavation, top trimming and open face excavation, and can realize functions such as hard rock crushing and soft soil fast excavation by replacing the front end crushing mechanism 107.

[0041] It should be noted that the front-end crushing mechanism 107 can be a crushing hammer or a high-frequency crushing hammer. Those skilled in the art can also install other types of front-end working mechanisms on the propulsion platform 106 as needed.

[0042] The intermediate mounting plate 104 of the embodiment of the present application is provided with a small arm 105; a propulsion platform 106 is provided on the small arm 105, and a front-end crushing mechanism 107 is detachably connected to the propulsion platform 106. The embodiment of the present application makes it possible to replace the front-end crushing mechanism 107 according to different construction conditions by detachably connecting the front-end crushing mechanism 107 and the propulsion platform 106. When excavating in rock formations of different hardness, workers can quickly replace the corresponding front-end crushing mechanism 107 according to the changes in rock formation hardness, thereby solving the problem of rapid excavation in rock formations of different hardness and improving construction efficiency. In addition, it can also cause wear and tear on the mismatched front-end crushing mechanism 107 in rock formations with excessive hardness, thereby increasing the service life of the front-end crushing mechanism 107.

[0043] As an optional embodiment, a second telescopic drive member is installed on the arm 105; the telescopic end of the second telescopic drive member is connected to the propulsion platform 106, which is used to drive the front end crushing mechanism 107 to move along the front and rear directions of the tunnel boring machine chassis 111 through the propulsion platform 106.

[0044] It should be noted that in this embodiment of the present application, a second telescopic drive member is mounted on the arm 105. The movement direction of the telescopic end of the second telescopic drive member is consistent with the front-to-back direction of the roadheader chassis 111. One end of the second telescopic drive member is mounted on the arm 105, and the telescopic end is connected to the propulsion platform 106, thereby achieving linear propulsion of the propulsion platform 106.

[0045] The forearm 105 can be provided with a guide rail, extending in the same direction as the telescopic end movement of the second telescopic drive member. The propulsion platform 106 is slidably connected to the guide rail to guide the movement of the propulsion platform 106. This arrangement significantly improves the reliability of the linear movement of the propulsion platform 106.

[0046] It should be noted that the first telescopic driving member 102 and the second telescopic driving member can adopt hydraulic cylinders. Those skilled in the art can select the specific model according to needs, and no special limitation is made here.

[0047] Reference Figure 1 、 Figure 2 as well as Figure 3 As shown, as an optional embodiment, a bucket mechanism 108 is further included; the bucket mechanism 108 is installed on the arm 105 and is arranged at a position away from the front crushing mechanism 107.

[0048] Furthermore, the front end of the tunneling boom 100 of the embodiment of the present application is also provided with a bucket mechanism 108. The bucket mechanism 108 is configured to scoop the crushed ore onto a shovel plate 112 and transport the ore to the rear end via a feed chute 113. The configuration of the bucket mechanism 108 in the embodiment of the present application can greatly improve the efficiency of material discharge and feeding, allowing the entire tunneling machine to complete material discharge without leaving the site.

[0049] Reference Figure 1 、 Figure 2 As shown, as an optional embodiment, the intermediate mounting plate 104 is rotatably connected to the second end of the upper arm 101, and the second end of the upper arm 101 is provided with a rotation drive module 109 connected to the mounting plate, and the rotation drive module 109 is used to drive the intermediate mounting plate 104 to rotate.

[0050] Furthermore, in the embodiment of the present application, a rotation drive module 109 is provided at the second end of the boom 101, and the rotation drive module 109 can drive the intermediate mounting plate 104 to rotate. In the embodiment of the present application, the rotation of the intermediate mounting plate 104 can drive the front arm 105 to rotate, that is, the bucket mechanism 108 and the front crushing mechanism 107 to rotate, thereby allowing the bucket mechanism 108 to adjust the excavation angle, which is conducive to flexible operation in narrow tunnel spaces.

[0051] It should be noted that a first gear is provided on the outer periphery of the intermediate mounting disk 104, and a second gear is provided at the power output end of the rotation drive module 109. The first and second gears mesh and transmit power. The diameter of the first gear is larger than that of the second gear, thereby reducing the speed of the intermediate mounting disk 104. The specific reduction ratio can be determined by those skilled in the art as needed to ensure stable rotation of the intermediate mounting disk 104.

[0052] It should be noted that the rotation plane of the intermediate mounting plate 104 intersects the axis of the arm 101. Preferably, the rotation plane of the intermediate mounting plate 104 is perpendicular to the axis of the arm 101.

[0053] Reference Figure 1 、 Figure 2 as well as Figure 3 As shown, an embodiment of the present application provides a crushing-type tunnel boring machine 110, comprising a tunnel boring machine chassis 111 and the above-mentioned tunnel boring boom 100; the tunnel boring boom 100 is installed at the front end of the traveling direction of the tunnel boring machine chassis 111; a shovel plate 112 for collecting mineral materials is provided below the tunnel boring boom 100.

[0054] The crushing tunnel boring machine 110 of the present embodiment utilizes the aforementioned tunneling boom 100. By detachably mounting a front-end crushing mechanism 107 on the propulsion platform 106, workers can easily replace the front-end crushing mechanism 107 when faced with rock formations of varying hardness. For softer rock, a high-frequency hammer can be used for crushing, enabling rapid tunneling. For harder rock, a breaker hammer can be used for crushing, achieving stable and reliable tunneling.

[0055] It should be noted that the tunnel boring machine chassis 111 in the embodiment of the present application may be a crawler chassis. Figure 1 As shown, a cab 114 is provided on the crawler chassis.

[0056] Reference Figure 1 、 Figure 3 As shown, as an optional embodiment, it also includes a material trough 113; the material trough 113 extends along the front and rear directions of the tunnel boring machine chassis 111, the feed end of the material trough 113 is connected to the shovel plate 112, and the discharge end of the material trough 113 is located behind the tunnel boring machine chassis 111.

[0057] The conveying trough 113 of the embodiment of the present application includes a scraper chain for pushing the mineral material in the shovel plate 112 into the conveying trough 113 and allowing the mineral material to be transported to the rear of the crushing tunneling machine 110 .

[0058] The material feeding trough 113 is embedded in the middle of the tunnel boring machine chassis 111 .

[0059] The feed chute 113 of the present embodiment extends through the tunnel boring machine chassis 111 in the forward and backward directions of the travel route. In other words, the feed chute 113 is integrated and embedded in the tunnel boring machine chassis 111, preventing the feed chute 113 from being too high. Therefore, the crushing tunnel boring machine 110 provided in the present embodiment can operate in tunnels with steep slopes, many turns, and small dimensions.

[0060] As an optional embodiment, it further includes a dust suppression device provided on the tunnel boring machine chassis 111 , and the dust suppression device is used to spray in front of the tunnel boring machine chassis 111 .

[0061] The dust suppression device includes a spray head and a water supply tank; the spray head and the water supply tank are connected by a connecting pipe. The embodiment of the present application uses the spray head to spray dust at the construction site of the front-end crushing mechanism 107, thereby preventing the generation of large amounts of smoke and dust in the tunnel and ensuring a better construction environment.

[0062] Further, refer to Figure 1 、 Figure 2As shown, in the embodiment of the present application, two support frames 115 are provided at the rear of the tunnel boring machine chassis 111. The two support frames 115 are in an eight-shaped structure, and are used to improve the stability of the crushing tunnel boring machine 110 during the operation of the tunneling boom 100.

[0063] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A tunneling boom, characterized in that: The invention comprises a large arm (101) whose first end is connected to a chassis (111) of a roadheader, and a small arm (105) connected to the second end of the large arm (101); a propulsion platform (106) is provided on the small arm (105); and a front-end crushing mechanism (107) is detachably connected to the propulsion platform (106).

2. The excavation boom according to claim 1, characterized in that: The first end of the boom (101) is hinged to a connecting frame (103) installed at the front end of a tunnel boring machine chassis (111), and the second end of the boom (101) is connected to a small arm (105) via an intermediate mounting plate (104). The invention also includes a first telescopic driving member (102) connected to the boom (101) at a telescopic end, and used to drive the boom (101) to rotate relative to the connecting frame (103).

3. The excavation boom according to claim 1, characterized in that: The propulsion platform (106) is provided with a sinking platform (116); the front end crushing mechanism (107) is provided with a clamping portion (117), and the clamping portion (117) is embedded in the sinking platform (116) in a direction perpendicular to the propulsion platform (106); the clamping portion abuts against the inner wall of the sinking platform (116), generating a holding force that prevents the front end crushing mechanism (107) from moving in the plane where the propulsion platform (106) is located.

4. The excavation boom according to claim 3, characterized in that: The propulsion platform (106) is provided with a plurality of connection ears at intervals, each of which has a plug-in hole extending in a direction parallel to the plane where the propulsion platform (106) is located; and further comprises a locking connection shaft (118) passing through the plug-in hole and plugged into the front end crushing mechanism (107), for generating a force to prevent the clamping portion (117) from escaping from the sinking platform (116).

5. The tunneling boom according to any one of claims 1 to 4, characterized in that: A second telescopic driving member is installed on the small arm (105); the telescopic end of the second telescopic driving member is connected to the propulsion platform (106), and is used to drive the front end crushing mechanism (107) to move along the front and rear directions of the tunnel boring machine chassis (111) through the propulsion platform (106).

6. The tunneling boom according to any one of claims 1 to 4, characterized in that: It also includes a bucket mechanism (108); the bucket mechanism (108) is installed on the small arm (105) and is arranged at a position away from the front end crushing mechanism (107).

7. The excavation boom according to claim 2, characterized in that: The intermediate mounting plate (104) is rotatably connected to the second end of the upper arm (101); the second end of the upper arm (101) is provided with a rotation drive module (109) connected to the mounting plate; the rotation drive module (109) is used to drive the intermediate mounting plate (104) to rotate.

8. The tunneling boom according to any one of claims 1 to 4, characterized in that: The front-end crushing mechanism (107) includes any one of a crushing hammer, a high-frequency crushing hammer and a hydraulic splitter.

9. A crushing type tunnel boring machine, characterized in that: The invention comprises a tunnel boring machine chassis (111) and a tunnel boring boom (100) as described in any one of claims 1 to 5; the tunnel boring boom (100) is installed at the front end of the traveling direction of the tunnel boring machine chassis (111); and a shovel plate (112) for collecting mineral materials is provided below the tunnel boring boom (100).

10. The crushing-type tunnel boring machine according to claim 9, characterized in that: It also includes a dust suppression device arranged on the tunnel boring machine chassis (111), the dust suppression device is used to spray in front of the tunnel boring machine chassis (111); the dust suppression device includes a spray head and a water supply tank; the spray head is connected to the water supply tank via a connecting pipe.

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