Coal mine tunnel excavating machine

Abstract

The utility model belongs to the technical field of excavating equipment, and particularly relates to a coal mine tunnel excavating machine which comprises a conveying frame and a conveying belt, the conveying belt is arranged on the inner side of the conveying frame, a shovel plate assembly is installed at one end of the conveying frame, and a shifting single rod and an edge circulation shifting assembly are arranged on the inner side of the shovel plate assembly. The edge circulating shifting assembly comprises a sliding supporting seat, a bidirectional driving block, a sliding guide block and an edge feeding shifting plate, and the bidirectional driving block obliquely slides along the sliding supporting seat; a single rod is poked to reciprocate to apply pushing acting force to a bidirectional driving block along with circulating motion of a collecting star wheel, so that the bidirectional driving block is blocked by a sliding guide block to perform inclined and reciprocating motion along a limiting path of a limiting sliding groove formed in a sliding supporting seat; and then the bidirectional driving block drives the edge feeding shifting plate to the conveying frame in the inclined direction set by the limiting sliding groove, so that the coal accumulated in the side direction of the shovel plate shell is fully taken out.

Description

Technical Field

[0001] This utility model belongs to the field of excavation equipment technology, specifically relating to a coal mine roadway excavator. Background Technology

[0002] Roadways are various passages drilled between the surface and the ore body, used for ore transportation, ventilation, drainage, pedestrian access, and various necessary preparatory works for new ore extraction by metallurgical equipment. Currently, cantilever roadheaders are the primary type of roadheader. Cantilever roadheaders use a bucket and a star wheel to transport and collect excavated coal. However, this structure has a problem: because the range of coal movement caused by the star wheel is fixed, some coal slag easily reaches and accumulates on the sidewalls of the bucket as the star wheel moves in a circular motion, thus occupying considerable normal transport space and potentially limiting local transport distances. Utility Model Content

[0003] This utility model provides a coal mine roadway excavator.

[0004] This utility model provides the following technical solution: a coal mine roadway excavator, including a conveyor frame and a conveyor belt, the conveyor belt being disposed inside the conveyor frame, a shovel assembly being installed at one end of the conveyor frame, a single lever and an edge circulating feeding assembly being disposed inside the shovel assembly, the edge circulating feeding assembly including a sliding support, a bidirectional drive block, a sliding guide block and an edge feeding plate, the bidirectional drive block sliding obliquely along the sliding support, the sliding guide block being fixedly connected to one end of the sliding support, and the edge feeding plate being fixedly connected to one end of the bidirectional drive block.

[0005] The shovel assembly includes a shovel housing, a front shovel, and a collecting star wheel. The shovel housing is fixedly connected to the conveyor frame and the front shovel. The collecting star wheel is rotatably connected to the inner side of the shovel housing.

[0006] One end of the actuating lever is fixedly connected to the collecting star wheel.

[0007] The bottom of the sliding guide block is provided with a second guide switching surface, and the top of the bidirectional drive block is provided with a first guide cross-section that matches the shape of the second guide switching surface.

[0008] Both the second guide switching surface and the first guide cross surface are coated with Teflon.

[0009] The sliding support seat has a limiting groove, and the bidirectional drive block is fixedly connected to a sliding traction rod, which is slidably connected to the inner side of the limiting groove.

[0010] A tension spring is fixedly connected to one side of the inner wall of the limiting groove, and one end of the tension spring is fixedly connected to the sliding traction rod.

[0011] The beneficial effects of this utility model are as follows: Coal is conveyed by the rotation of the collecting star wheel. As the collecting star wheel rotates, it actuates the single rod to apply a pushing force to the bidirectional drive block. This causes the bidirectional drive block to be obstructed by the sliding guide block and move along the limiting path of the limiting groove opened on the sliding support seat, tilting and reciprocating. This causes the bidirectional drive block to drive the edge feeding plate towards the conveyor frame along the tilt direction set by the limiting groove, thereby fully carrying out the coal stored on the side of the shovel shell. At the same time, the tilting back and forth movement of the edge feeding plate does not affect the normal passage of coal conveying by the collecting star wheel. This ensures that after the coal is excavated and falls into the inner side of the shovel shell, it still maintains a normal transmission speed and enters the conveyor frame, effectively improving the transmission stability during coal excavation.

[0012] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0013] Figure 1 This is a top view of the present invention;

[0014] Figure 2 This is a three-dimensional schematic diagram of the present invention:

[0015] Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0016] In the diagram: 1. Conveyor frame; 2. Conveyor belt; 3. Shovel assembly; 31. Shovel housing; 32. Front shovel; 33. Collecting star wheel; 4. Actuating lever; 5. Edge circulating feeding assembly; 51. Sliding support seat; 511. Limiting groove; 512. Tension spring; 52. Bidirectional drive block; 521. First guide section; 522. Sliding traction rod; 53. Sliding guide block; 531. Second guide switching surface; 54. Edge feeding plate. Detailed Implementation

[0017] Please see Figures 1-3 The present invention provides the following technical solution: a coal mine roadway excavator, comprising a conveyor frame 1 and a conveyor belt 2, the conveyor belt 2 being disposed inside the conveyor frame 1, a shovel assembly 3 being installed at one end of the conveyor frame 1, a single lever 4 and an edge circulating conveying assembly 5 being disposed inside the shovel assembly 3, the edge circulating conveying assembly 5 comprising a sliding support 51, a bidirectional drive block 52, a sliding guide block 53 and an edge feeding plate 54, the bidirectional drive block 52 sliding obliquely along the sliding support 51, the sliding guide block 53 being fixedly connected to one end of the sliding support 51, and the edge feeding plate 54 being fixedly connected to one end of the bidirectional drive block 52.

[0018] The shovel assembly 3 includes a shovel housing 31, a front shovel 32, and a collecting star wheel 33. The shovel housing 31 is fixedly connected to the conveyor frame 1, and the shovel housing 31 is fixedly connected to the front shovel 32. The collecting star wheel 33 is rotatably connected to the inner side of the shovel housing 31. In this embodiment, the collecting star wheel 33 is driven by a drive motor provided at the bottom of the front shovel 32. The improvement of this utility model is not the conveyor frame 1, the conveyor belt 2, or the shovel assembly 3, as these are all well-known technical means in the field. Therefore, the specific working principle of these parts will not be described in detail in this embodiment.

[0019] One end of the lever 4 is fixedly connected to the collecting star wheel 33.

[0020] In this embodiment, the lever 4 applies a pushing force to the bidirectional drive block 52 as the collecting star wheel 33 rotates in a circular motion, enabling the bidirectional drive block 52 to reciprocate back and forth.

[0021] The bottom of the sliding guide block 53 is provided with a second guide switching surface 531, and the top of the bidirectional drive block 52 is provided with a first guide cross surface 521 that matches the shape of the second guide switching surface 531.

[0022] In this embodiment, when the single lever 4 is reciprocated to apply a pushing force to the bidirectional drive block 52, the bidirectional drive block 52 is obstructed by the sliding guide block 53 and moves along the limiting path of the limiting groove 511 opened in the sliding support seat 51. The movement path of the bidirectional drive block 52 is limited by the second guide switching surface 531 at the bottom of the sliding guide block 53, and can only slide in an inclined direction. This achieves the function of limiting the sliding path of the bidirectional drive block 52, so that the edge feeding plate 54 slides back and forth in an inclined direction. This ensures that the edge feeding plate 54 does not affect the normal passage of coal conveying by the collecting star wheel 33. The setting of the first guide tangent surface 521 plays a sliding guiding role when it contacts the second guide switching surface 531, avoiding excessive sliding friction between the bidirectional drive block 52 and the sliding guide block 53.

[0023] Both the second guide switching surface 531 and the first guide cross surface 521 are coated with a Teflon coating. The Teflon coating is intended to further increase the wear resistance between the bidirectional drive block 52 and the sliding guide block 53, and reduce the sliding resistance when the first guide cross surface 521 and the second guide switching surface 531 come into contact.

[0024] The sliding support 51 has a limiting groove 511, and the bidirectional drive block 52 is fixedly connected to a sliding traction rod 522, which is slidably connected to the inside of the limiting groove 511.

[0025] A tension spring 512 is fixedly connected to one side of the inner wall of the limiting slide groove 511, and one end of the tension spring 512 is fixedly connected to the sliding traction rod 522.

[0026] In this embodiment, the sliding engagement of the limiting groove 511 and the sliding traction rod 522 further limits the sliding path of the bidirectional drive block 52 and the edge feeding plate 54, preventing the bidirectional drive block 52 and the edge feeding plate 54 from deviating from their paths during forward and backward movement. This stabilizes the coal located on the side of the front shovel 32 and pushes it towards the conveyor frame 1. At the same time, when the single lever 4 applies a pushing force to the bidirectional drive block 52 and causes it to slide towards the conveyor frame 1, the tension spring 512 is stretched by the traction of the bidirectional drive block 52. When the single lever 4 rotates away from the bidirectional drive block 52 with the collecting star wheel 33, the tension spring 512 retracts and resets, thereby realizing the reciprocating motion of the bidirectional drive block 52 and the edge feeding plate 54.

[0027] The working principle of this invention is as follows: After the front shovel 32 and the shovel shell 31 receive the excavated coal, the coal is conveyed by the rotation of the collecting star wheel 33. As the collecting star wheel 33 circulates, it actuates the single rod 4 to reciprocate and apply a pushing force to the bidirectional drive block 52. This causes the bidirectional drive block 52 to be obstructed by the sliding guide block 53 and move along the limiting path of the limiting groove 511 opened in the sliding support seat 51, tilting and reciprocating. This causes the bidirectional drive block 52 to move along the inclined direction set by the limiting groove 511, driving the edge feeding plate 54 towards the conveyor frame 1. The movement of the feed plate 54 allows for the full removal of coal stored laterally in the shovel shell 31. Simultaneously, the inclined back-and-forth movement of the feed plate 54 does not affect the normal passage of coal conveying by the collecting star wheel 33. This ensures that after the coal falls into the inner side of the shovel shell 31, it still maintains a normal transmission speed and enters the conveyor frame 1. It is then collected by the conveyor belt 2 to the external storage mechanism, effectively improving the transmission stability during coal excavation. This also prevents coal slag from being transported in a ring along the conveyor belt 2 and accumulating on the side wall of the bucket, reducing the possibility of limited local transmission distance.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A coal mine roadway tunneling machine comprising a conveyor frame (1) and a conveyor belt (2), the conveyor belt (2) being disposed inside the conveyor frame (1), characterized in that: The conveying frame (1) is provided with a shovel plate assembly (3) at one end, the inside of the shovel plate assembly (3) is provided with a poking single lever (4) and an edge circulating poking assembly (5), the edge circulating poking assembly (5) comprises a sliding support seat (51), a bidirectional driving block (52), a sliding guide block (53) and an edge feeding poking plate (54), the bidirectional driving block (52) is inclinedly slid along the sliding support seat (51), the sliding guide block (53) is fixedly connected to one end of the sliding support seat (51), and the edge feeding poking plate (54) is fixedly connected to one end of the bidirectional driving block (52).

2. A coal mine roadway development machine according to claim 1 wherein: The shovel plate assembly (3) comprises a shovel plate shell (31), a front shovel part (32) and a collecting star wheel (33), the shovel plate shell (31) is fixedly connected with the conveying frame (1), the shovel plate shell (31) is fixedly connected with the front shovel part (32), and the collecting star wheel (33) is rotationally connected to the inside of the shovel plate shell (31).

3. A coal mine roadway development machine according to claim 2 wherein: One end of the poking single lever (4) is fixedly connected with the collecting star wheel (33).

4. A coal mine roadway development machine according to claim 1 wherein: The bottom of the sliding guide block (53) is provided with a second guide switching surface (531), and the top of the bidirectional driving block (52) is provided with a first guide surface (521) matched with the shape of the second guide switching surface (531).

5. A coal mine roadway development machine as claimed in claim 4 wherein: The surfaces of the second guide switching surface (531) and the first guide surface (521) are sprayed with a Teflon coating.

6. A coal mine roadway development machine as claimed in claim 5 wherein: The sliding support seat (51) is provided with a limiting sliding groove (511), the bidirectional driving block (52) is fixedly connected with a sliding traction lever (522), and the sliding traction lever (522) is slidably connected to the inside of the limiting sliding groove (511).

7. A coal mine roadway development machine according to claim 6 wherein: One side of the inner wall of the limiting sliding groove (511) is fixedly connected with a stretching spring (512), and one end of the stretching spring (512) is fixedly connected with the sliding traction lever (522).

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