Protection structure of a tunneling machine

Abstract

The utility model belongs to the tunneling machine technical field, concretely relates to a protection structure of cantilever tunneling machine for tunnel excavation, including tunneling machine main part, the tunneling machine main part is fixedly installed with the connecting frame, the one end of connecting frame is fixedly connected with the scraper blade away from tunneling machine main part, the scraper blade is rotatably connected with the soil sweeping disc, the downside of connecting frame is provided with the conveying mechanism, be provided with the protection assembly on the conveying mechanism. The protection structure of cantilever tunneling machine for tunnel excavation uses the use of protection assembly, motor drives oval wheel rotation, drives straight pole reciprocating motion, makes the flattening plate left and right movement and sticks to the surface of conveyer belt, and the broken stone and broken soil concentrated in the middle are spreaded to both sides, cooperate the partition board on the conveyer belt, can form the regular material heap, avoid the material protruding scratch tunneling machine chassis. This dynamic flattening design can effectively eliminate the deformation of conveyer belt due to local extrusion, prolong the service life of conveyer belt, reduce the equipment failure caused by scratching.

Description

Technical Field

[0001] This utility model relates to the field of tunneling machine technology, specifically a protective structure for a cantilever tunneling machine used for tunnel excavation. Background Technology

[0002] In tunnel construction, cantilever tunneling machines have become important equipment for urban subway and mountain tunnel construction due to their advantages such as precise cutting and low vibration.

[0003] Currently, during operation, tunnel boring machines typically use two sets of rotating sweeping discs to sweep the soil and gravel generated during excavation into the bucket, which then falls onto the conveyor belt for transport. However, when the sweeping discs sweep the soil and gravel into the bucket and onto the conveyor belt, the gravel and soil concentrate in the middle area of ​​the conveyor belt, causing the middle area to bulge. This bulge then scrapes against the chassis of the tunnel boring machine during subsequent transport, and the reaction force causes the conveyor belt to deform, affecting the transport of gravel and soil. Therefore, a protective structure for tunnel boring machines used in tunnel excavation is proposed. Utility Model Content

[0004] The main objective of this invention is to provide a protective structure for a cantilever tunnel boring machine, which can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention proposes a protective structure for a cantilever tunnel boring machine, comprising a tunnel boring machine body, a connecting frame fixedly mounted on the tunnel boring machine body, a bucket fixedly connected to the end of the connecting frame away from the tunnel boring machine body, a sweeping disc rotatably connected to the bucket, a conveying mechanism provided on the lower side of the connecting frame, and a protective component provided on the conveying mechanism, the protective component comprising:

[0006] The protective plate is fixedly installed on the connecting frame;

[0007] The flat plate is slidably connected to the outer wall of the protective plate, and the flat plate is fixed to the straight rod.

[0008] Preferably, multiple sets of the stroking plates are provided, and the multiple sets of stroking plates are arranged in an equidistant array on the protective plate, and the end of the straight rod away from the stroking plate is L-shaped.

[0009] Preferably, a support frame is fixedly connected to the outer wall of the connecting frame, a motor is fixedly connected to the outer wall of the support frame, an elliptical wheel is fixedly connected to the output end of the motor, and the elliptical wheel abuts against the straight rod.

[0010] Preferably, a connecting block is fixedly connected to the outer wall of the straight rod, and the connecting block is elastically connected to the outer wall of the connecting frame through an elastic telescopic rod.

[0011] Preferably, the conveying mechanism includes a fixed frame, a transmission roller rotatably connected to the inner surface of the fixed frame, a second motor fixedly connected to the outer wall of the fixed frame, the second motor being fixedly connected to the transmission roller, a conveyor belt being drivenly connected to the transmission roller, and a partition plate being fixedly connected to the conveyor belt.

[0012] Preferably, the fixing bracket is fixedly connected to the lower side of the connecting bracket.

[0013] Preferably, the bucket has a discharge port on its lower side.

[0014] This utility model provides a protective structure for a cantilever tunnel boring machine. It has the following beneficial effects:

[0015] (1) The protective structure of this tunnel boring machine utilizes protective components. A motor drives an elliptical wheel to rotate, which in turn drives a straight rod to reciprocate. This causes the smoothing plate to move left and right and conform to the surface of the conveyor belt, spreading the concentrated gravel and soil in the center to both sides. Combined with the partition plates on the conveyor belt, this forms a regular material pile, preventing material from protruding and scraping against the machine's chassis. This dynamic smoothing design effectively eliminates deformation of the conveyor belt caused by localized compression, extends the conveyor belt's service life, and reduces equipment failures caused by scraping.

[0016] (2) The protective structure of the tunnel excavation cantilever tunneling machine is arranged with multiple sets of flat plates at equal intervals, which can cover conveyor belts of different widths and adapt to the paving requirements of materials of different particle sizes. While smoothing the materials, the structure avoids secondary damage to the conveyor belt and ensures the stability and continuity of the crushed stone and soil conveying process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ;

[0020] Figure 3 This is a partial three-dimensional structural diagram of the present invention;

[0021] Figure 4 This utility model Figure 3Schematic diagram of structure A in the middle.

[0022] Explanation of icon numbers:

[0023] 1. Tunneling machine body; 2. Connecting frame; 3. Bucket; 4. Sweeping disc; 5. Conveying mechanism; 6. Protective components; 31. Discharge port; 51. Fixing frame; 52. Motor II; 53. Conveyor belt; 54. Separator plate; 61. Protective plate; 62. Smoothing plate; 63. Straight rod; 65. Motor I; 64. Elliptical wheel; 66. Support frame; 67. Connecting block; 68. Elastic telescopic rod.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-4 This utility model proposes a protective structure for a cantilever tunnel boring machine, including a tunnel boring machine body 1, a connecting frame 2 fixedly installed on the tunnel boring machine body 1, a bucket 3 fixedly connected to the end of the connecting frame 2 away from the tunnel boring machine body 1, a sweeping disc 4 rotatably connected to the bucket 3, a conveying mechanism 5 provided on the lower side of the connecting frame 2, a protective component 6 provided on the conveying mechanism 5, and the sweeping disc 4 is driven by a driving component, such as an existing drive motor, etc. Through the rotation of the sweeping disc 4, gravel and soil can be swept onto the bucket 3.

[0027] In this embodiment of the utility model, in order to transport the crushed stone and soil, the conveying mechanism 5 specifically includes a fixed frame 51. A transmission roller is rotatably connected to the inner surface of the fixed frame 51. A second motor 52 is fixedly connected to the outer wall of the fixed frame 51. The second motor 52 is fixedly connected to the transmission roller. A conveyor belt 53 is driven to the transmission roller. A partition plate 54 is fixedly connected to the conveyor belt 53. The fixed frame 51 is fixedly connected to the lower side of the connecting frame 2. The output shaft of the second motor 52 rotates, driving the transmission roller to rotate, and then the conveyor belt 53 moves. After the sweeping disc 4 sweeps the crushed stone and soil onto the bucket 3, the crushed stone and soil fall onto the conveyor belt 53, and then the crushed stone and soil are transported away.

[0028] Furthermore, the protective component 6 includes a protective plate 61 and a flat plate 62. The protective plate 61 is fixedly mounted on the connecting frame 2, and the flat plate 62 is slidably connected to the outer wall of the protective plate 61. The flat plate 62 is fixed to the straight rod 63. Multiple sets of flat plates 62 are arranged in an equidistant array on the protective plate 61. The end of the straight rod 63 away from the flat plate 62 is L-shaped. A support frame 66 is fixedly connected to the outer wall of the connecting frame 2. A motor 65 is fixedly connected to the outer wall of the support frame 66. An elliptical wheel 64 is fixedly connected to the output end of the motor 65, and the elliptical wheel 64 abuts against the straight rod 63. A connecting block 67 is fixedly connected to the outer wall of the straight rod 63. The connecting block 67 is elastically connected to the outer wall of the connecting frame 2 through an elastic telescopic rod 68. The motor 65 drives the elliptical wheel 64 to rotate, which drives the straight rod 63 to reciprocate, causing the smoothing plate 62 to move left and right and fit against the surface of the conveyor belt 53. This spreads the crushed stone and soil concentrated in the middle to both sides. With the help of the partition plate 54 on the conveyor belt 53, a regular material pile can be formed, preventing the material from bulging and scraping the tunneling machine chassis. This dynamic smoothing design can effectively eliminate the deformation of the conveyor belt 53 caused by local compression, extend the service life of the conveyor belt 53, and reduce equipment failures caused by scraping.

[0029] Furthermore, a discharge port 31 is provided on the lower side of the bucket 3. By using the discharge port 31, excess material can be discharged, and excessive amounts of crushed soil and gravel can be transported.

[0030] It should be noted that the above electrical components are all existing technology products. Those skilled in the art should select, install and complete the circuit debugging work according to the needs of use to ensure that all electrical appliances can work normally. The components are all general standard parts or components known to those skilled in the art. Their structure and principle can be known by those skilled in the art through technical manuals or conventional experimental methods. No specific restrictions are made here.

[0031] In operation, the sweeping disc 4 first sweeps the gravel and soil onto the bucket 3. Then, the second motor 52 is started, and its output shaft rotates, driving the transmission roller to rotate, which in turn moves the conveyor belt 53. After the sweeping disc 4 sweeps the gravel and soil onto the bucket 3, the gravel and soil fall onto the conveyor belt 53 and are then transported away. During this process, the first motor 65 drives the elliptical wheel 64 to rotate, which in turn drives the straight rod 63 to reciprocate, causing the flat plate 62 to move left and right and fit against the surface of the conveyor belt 53. This flattens the gravel and soil concentrated in the middle to both sides. With the help of the partition plate 54 on the conveyor belt 53, a regular pile of material can be formed, preventing the material from protruding and scraping the tunneling machine chassis.

[0032] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A protection structure for a tunneling machine with a boom, comprising a machine body (1), characterized in that: A connecting frame (2) is fixedly installed on the main body (1) of the tunneling machine. A bucket (3) is fixedly connected to one end of the connecting frame (2) away from the main body (1) of the tunneling machine. A sweeping disc (4) is rotatably connected to the bucket (3). A conveying mechanism (5) is provided on the lower side of the connecting frame (2). A protective component (6) is provided on the conveying mechanism (5). The protective component (6) includes: Protective plate (61), the protective plate (61) is fixedly installed on the connecting frame (2); A flat plate (62) is slidably connected to the outer wall of the protective plate (61), and the flat plate (62) is fixed to the straight rod (63).

2. The protection structure of a boom-type tunneling machine according to claim 1, characterized in that: The flat plate (62) is provided in multiple sets, and the multiple sets of flat plate (62) are arranged in an equidistant array on the protective plate (61). The end of the straight rod (63) away from the flat plate (62) is L-shaped.

3. The protection structure of a boom-type tunneling machine according to claim 1, wherein: A support frame (66) is fixedly connected to the outer wall of the connecting frame (2), and a motor (65) is fixedly connected to the outer wall of the support frame (66). An elliptical wheel (64) is fixedly connected to the output end of the motor (65), and the elliptical wheel (64) abuts against the straight rod (63).

4. The protective structure for a cantilever tunnel boring machine according to claim 1, characterized in that: A connecting block (67) is fixedly connected to the outer wall of the straight rod (63), and the connecting block (67) is elastically connected to the outer wall of the connecting frame (2) through an elastic telescopic rod (68).

5. The protective structure for a cantilever tunnel boring machine according to claim 1, characterized in that: The conveying mechanism (5) includes a fixed frame (51), a transmission roller is rotatably connected to the inner surface of the fixed frame (51), a second motor (52) is fixedly connected to the outer wall of the fixed frame (51), the second motor (52) is fixedly connected to the transmission roller, a conveyor belt (53) is drivenly connected to the transmission roller, and a partition plate (54) is fixedly connected to the conveyor belt (53).

6. The protective structure for a cantilever tunnel boring machine according to claim 5, characterized in that: The fixing frame (51) is fixedly connected to the lower side of the connecting frame (2).

7. The protective structure for a cantilever tunnel boring machine according to claim 1, characterized in that: The bucket (3) has a discharge port (31) on its lower side.

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