Coal mine tunneling hole expanding and cutting equipment

Abstract

The utility model relates to the technical field of coal mining, in particular to coal mine tunneling hole expanding and cutting equipment which comprises a bottom frame, a plurality of mounting holes are formed in the middle of the upper end of the bottom frame, grooves are formed in the left portion and the right portion of the front end of the bottom frame, and a lifting device is fixedly connected in the two grooves jointly. The right end of the lifting device is fixedly connected with a fixing device; the lifting device comprises two hydraulic cylinders, a mounting groove is formed in the right end of the supporting frame, and the two hydraulic cylinders are fixedly connected into the grooves respectively. According to the coal mine tunneling hole expanding and cutting equipment, through the synergistic effect of the lifting device and the fixing device, the height can be adjusted so as to adapt to different working conditions, the position can be accurately fixed so as to ensure the stability and safety of the equipment, the working efficiency is improved, and the practicability is high. A plurality of problems of a traditional supporting mode are effectively solved, so that the safety and the working efficiency of coal mining are comprehensively improved.

Description

A coal mine tunneling enlargement device Technical Field

[0001] This utility model relates to the field of coal mining technology, and in particular to a coal mine tunneling and enlarging eye device. Background Technology

[0002] Currently, with the widespread application of high-yield and high-efficiency fully mechanized longwall mining faces, the proportion of large-section coal roadways in coal mines is gradually increasing. Large-section coal roadways have large cut-out spans and are also the installation sites for coal mining equipment, thus placing high demands on their safety. However, the support method currently used in most coal mine cut-out roadways is I-beam crossbeam supports + single-unit supports. Under this support model, the I-beam crossbeams in the cut-out roadway bear enormous pressure. Due to the large cut-out span and the complex stress effects brought about by coal mining operations, the I-beam crossbeams often experience severe deformation problems. When cutting... When operating a large-scale coal mine excavation borehole, traditional beam splicing methods face numerous challenges. On the one hand, the beams are prone to bending under immense pressure, making splicing extremely difficult, and in some cases, impossible. On the other hand, the construction process involves not only tedious beam erection work but also significantly increases the labor intensity of workers due to the high difficulty of construction. This not only slows down the construction progress and affects the overall efficiency of coal mining but may also increase safety risks due to the extended construction period, posing a severe challenge to the safe production and efficient operation of coal mines. Therefore, we have introduced a new coal mine excavation borehole expansion equipment. Summary of the Invention

[0003] The main purpose of this utility model is to provide a coal mine tunneling enlargement device that can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A coal mine tunneling and enlarging hole device includes a base frame, with several mounting holes in the middle of the upper end of the base frame, and grooves in the left and right front ends of the base frame. A lifting device is fixedly connected to both grooves, and a fixing device is fixedly connected to the right end of the lifting device.

[0006] The lifting device includes two hydraulic cylinders. The output ends of both hydraulic cylinders pass through the base frame and are fixedly connected to a top rod. The upper ends of the two top rods are fixedly connected to a support frame. The upper end of the support frame has a sliding groove, and the right end of the support frame has an installation groove. The two hydraulic cylinders are respectively fixedly connected in the groove.

[0007] Preferably, the fixing device includes a drive motor, the output end of which passes through the support frame and is fixedly connected to a positive and negative threaded rod. The left and right sides of the outer surface of the positive and negative threaded rod are movably connected to displacement plates. The left end of the left displacement plate is fixedly connected to two stabilizing screws, and the right end of the right displacement plate is fixedly connected to a stabilizing screw. The drive motor is fixedly connected in the mounting groove.

[0008] By adopting the above technical solution, the drive motor, as a power source, can provide power to the fixing device, and drive the displacement plate to move through its output end, thereby realizing the adjustment of the position of the fixing screw.

[0009] Preferably, both displacement plates are slidably connected within the groove.

[0010] By adopting the above technical solution, the slide provides a precise sliding track for the displacement plate, restricting the direction of movement of the displacement plate and making it slide linearly along the slide.

[0011] Preferably, the left end of the positive and negative threaded rod is movably connected to the left frame wall of the support frame via a bearing.

[0012] By adopting the above technical solution, the use of bearings allows the positive and negative threaded rods to rotate flexibly on the left wall of the support frame. On the one hand, it can reduce the friction of the positive and negative threaded rods during rotation, reduce energy loss, and improve the working efficiency of the drive motor. On the other hand, the bearings can withstand the axial and radial forces generated by the positive and negative threaded rods during rotation, ensuring that the rotation axis of the positive and negative threaded rods and the left wall of the support frame maintain a relatively stable positional relationship.

[0013] Preferably, none of the four stabilizing screws are in contact with the support frame.

[0014] By adopting the above technical solution, contact and friction between the stabilizing screw and the support frame can be avoided during position adjustment or equipment operation, thus preventing wear caused by friction and extending the service life of the stabilizing screw.

[0015] Preferably, the two displacement plates have the same structure and are symmetrically distributed from left to right.

[0016] By adopting the above technical solution: the same structure can ensure that the two displacement plates have the same motion characteristics and mechanical properties under the drive of the positive and negative threaded rods. The symmetrical distribution on the left and right sides allows the two displacement plates to produce relative or opposite symmetrical movements when the positive and negative threaded rods rotate. This symmetrical movement can ensure that the force on both sides of the equipment can be evenly distributed when the stabilizing screw is adjusted, avoiding the tilting or instability of the equipment due to uneven force.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In this invention, two hydraulic cylinders in the lifting device drive the top rod to raise and lower the support frame, enabling the equipment to adapt to complex working conditions such as different roadway cross-sections at varying heights in coal mine excavation cuts. This height adjustability improves the equipment's versatility, ensuring it can accurately reach various working positions and providing greater flexibility for coal mining operations. The simultaneous operation of the two hydraulic cylinders shares the load, providing stable support and power for the lifting of the support frame, making the lifting process smoother and reducing potential equipment damage or instability caused by excessive force at a single point. This significantly improves the overall stability and reliability of the equipment, effectively guaranteeing the smooth progress of coal mining operations.

[0019] In this invention, the drive motor in the fixing device drives the positive and negative threaded rods to rotate, causing the displacement plate to slide in the groove, thereby precisely adjusting the position of the fixing screw. This function can meet the needs of different working scenarios in coal mine tunneling and enlarging operations for fixing position and method, ensuring that the equipment can be firmly fixed in the appropriate position, and improving the stability and safety of the equipment during operation. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the overall structure of a coal mine tunneling enlargement device according to this utility model;

[0021] Figure 2 is a schematic diagram of the overall structure of the lifting device of a coal mine tunneling and enlarging eye equipment according to this utility model;

[0022] Figure 3 is a schematic diagram of the overall structure of the fixing device of a coal mine tunneling enlargement cutting device according to the present invention.

[0023] Figure 4 is a detailed enlarged structural diagram of section A of a coal mine tunneling enlargement cutting device according to this utility model.

[0024] In the diagram: 1. Base frame; 2. Groove; 3. Lifting device; 4. Fixing device; 5. Mounting hole; 31. Hydraulic cylinder; 32. Support frame; 33. Top rod; 34. Slide groove; 35. Mounting groove; 41. Drive motor; 42. Positive and negative threaded rod; 43. Displacement plate; 44. Stabilizing screw. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Please refer to Figures 1-4. This utility model provides a technical solution:

[0029] A coal mine tunneling and enlarging hole device includes a base frame 1. Several mounting holes 5 are opened in the middle of the upper end of the base frame 1. Grooves 2 are opened in the left and right front ends of the base frame 1. A lifting device 3 is fixedly connected in both grooves 2. A fixing device 4 is fixedly connected to the right end of the lifting device 3.

[0030] In this embodiment, the lifting device 3 includes a hydraulic cylinder 31. There are two hydraulic cylinders 31. The output ends of the two hydraulic cylinders 31 pass through the base frame 1 and are fixedly connected to the top rods 33. The upper ends of the two top rods 33 are fixedly connected to the support frame 32. The upper end of the support frame 32 has a sliding groove 34, and the right end of the support frame 32 has an installation groove 35. The two hydraulic cylinders 31 are respectively fixedly connected in the groove 2.

[0031] Through the above scheme, the lifting device 3 mainly consists of hydraulic cylinders 31, push rods 33, and support frame 32. Two hydraulic cylinders 31 are fixed in the groove 2 at the front end of the base frame 1. When the hydraulic cylinders 31 work, their output ends generate thrust, pushing the push rods 33 upwards. Since the upper ends of the two push rods 33 are jointly and fixedly connected to the support frame 32, the rise of the push rods 33 will cause the support frame 32 to rise together. Through the action of the hydraulic cylinders 31, the lifting of the support frame 32 can be achieved, thus allowing the equipment to adapt to different working environments and needs. In coal mine tunneling and enlargement work, various... In situations such as roadway cross-sections at the same height, this adjustable height function ensures that the equipment can accurately reach the working position under various complex working conditions, improving the equipment's versatility and adaptability. The structural design of two hydraulic cylinders 31 and a top rod 33 provides stable support and power for the lifting of the support frame 32. The two hydraulic cylinders 31 work simultaneously, sharing the load, making the lifting process smoother and reducing the possibility of equipment damage or instability due to excessive force at a single point. This improves the overall stability and reliability of the equipment, which is conducive to ensuring the smooth progress of coal mining operations.

[0032] In this embodiment, the fixing device 4 includes a drive motor 41. The output end of the drive motor 41 passes through the support frame 32 and is fixedly connected to a threaded rod 42. The left and right sides of the outer surface of the threaded rod 42 are movably connected to displacement plates 43. The left end of the left displacement plate 43 is fixedly connected to two stabilizing screws 44, and the right end of the right displacement plate 43 is fixedly connected to a stabilizing screw 44. The drive motor 41 is fixedly connected in the mounting groove 35. Both displacement plates 43 are slidably connected in the sliding groove 34. The left end of the threaded rod 42 is movably connected to the left wall of the support frame 32 through a bearing. The four stabilizing screws 44 do not contact the support frame 32. The two displacement plates 43 have the same structure and are symmetrically distributed on the left and right sides.

[0033] According to the above scheme, the fixing device 4 consists of a drive motor 41, a threaded rod 42, a displacement plate 43, and a fixing screw 44. The drive motor 41 is fixed in the mounting groove 35 at the right end of the support frame 32, and its output end passes through the support frame 32 and is connected to the threaded rod 42. When the drive motor 41 works, it drives the threaded rod 42 to rotate. The left and right sides of the outer surface of the threaded rod 42 are movably connected to the displacement plate 43, and the displacement plate 43 is slidably connected in the slide groove 34 at the upper end of the support frame 32. Due to the special thread structure of the threaded rod 42, when it rotates, the two displacement plates 43 will slide relative to or opposite to each other in the slide groove 34. The left end of the left displacement plate 43 is fixedly connected to two fixing screws 44, and the right end of the right displacement plate 43 is fixedly connected to a fixing screw 44. As the displacement plate 43 moves, the position of the fixing screw 44 will also be adjusted accordingly. This achieves the function of fixing the equipment. The drive motor 41 drives the positive and negative threaded rod 42 to rotate, which can precisely control the moving direction and distance of the displacement plate 43, thereby achieving precise adjustment of the position of the stabilizing screw 44. In the work of expanding the tunnel in coal mine, different working scenarios may require different fixing positions and methods. This precise fixing position adjustment function can ensure that the equipment can be firmly fixed in the appropriate position, improving the stability and safety of the equipment during operation. By adjusting the position of the stabilizing screw 44, it can adapt to different tunnel shapes, sizes and geological conditions. When facing irregular tunnel surfaces, the position of the stabilizing screw 44 can be adjusted according to the actual situation to make it better contact the tunnel wall and provide stable support, avoiding shaking or displacement of the equipment during operation, and ensuring the smooth progress of the tunneling and expanding work in coal mine.

[0034] It should be noted that this utility model is a coal mine tunneling and enlarging eye device. During use, firstly, the base frame 1 is installed and fixed with other related components or equipment through several mounting holes 5 in the middle of the upper end, providing a stable foundation support for the entire device. The grooves 2 on the left and right sides of the front end of the base frame 1 are used to install the lifting device 3. When the two hydraulic cylinders 31 are working, their output ends push the top rod 33 upward, thereby driving the support frame 32 to rise, so as to adjust the height of the device to adapt to different working scenarios. The sliding groove 34 at the upper end of the support frame 32 provides a sliding track for the displacement plate 43 in the fixing device 4. The mounting groove 35 at the right end is used to install the drive motor 41 of the fixing device 4. When the device reaches the working position and needs to be fixed, the fixing device 4 starts to work, the drive motor 41 starts, and its output end drives the positive and negative threaded rod 42 to rotate. Due to the action of the positive and negative threaded rod 42, the displacement plate 43, which is movably connected on the left and right sides of the outer surface, slides... The two displacement plates 43 have identical structures and are symmetrically distributed. When the positive and negative threaded rods 42 rotate, they will move in opposite directions. The two stabilizing screws 44 on the left end of the left displacement plate 43 and the stabilizing screws 44 on the right end of the right displacement plate 43 will adjust their positions as the displacement plates 43 move, thereby achieving a fixing effect at different positions. At the same time, the left end of the positive and negative threaded rods 42 is movably connected to the left frame wall of the support frame 32 through a bearing, ensuring the stable rotation of the positive and negative threaded rods 42. The four stabilizing screws 44 do not contact the support frame 32, avoiding unnecessary friction and interference. Through the coordinated operation of the lifting device 3 and the fixing device 4, this equipment can effectively cope with the complex working conditions of large-section coal roadways in coal mine tunneling and enlarging operations, solve the problems of excessive deformation of I-beam supports under pressure, difficulty in beam splicing, and slow construction progress in traditional support methods, and improve the safety and efficiency of coal mining.

[0035] 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 embodiments and descriptions in the specification 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 the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A coal mine tunneling and enlargement device, comprising a base frame (1), characterized in that: The upper middle part of the base frame (1) has several mounting holes (5). The left and right front parts of the base frame (1) are both grooved (2). A lifting device (3) is fixedly connected in both grooves (2). A fixing device (4) is fixedly connected to the right end of the lifting device (3). The lifting device (3) includes a hydraulic cylinder (31). There are two hydraulic cylinders (31). The output ends of the two hydraulic cylinders (31) pass through the base frame (1) and are fixedly connected to a top rod (33). The upper ends of the two top rods (33) are fixedly connected to a support frame (32). The upper end of the support frame (32) has a sliding groove (34). The right end of the support frame (32) has a mounting groove (35). The two hydraulic cylinders (31) are fixedly connected in the grooves (2).

2. The coal mine tunneling enlargement equipment according to claim 1, characterized in that: The fixing device (4) includes a drive motor (41). The output end of the drive motor (41) passes through the support frame (32) and is fixedly connected to a positive and negative threaded rod (42). The left and right sides of the outer surface of the positive and negative threaded rod (42) are movably connected to displacement plates (43). The left end of the displacement plate (43) on the left side is fixedly connected to two stabilizing screws (44), and the right end of the displacement plate (43) on the right side is fixedly connected to a stabilizing screw (44). The drive motor (41) is fixedly connected in the mounting groove (35).

3. The coal mine tunneling enlargement equipment according to claim 2, characterized in that: Both displacement plates (43) are slidably connected in the groove (34).

4. A coal mine tunneling enlargement device according to claim 2, characterized in that: The left end of the positive and negative threaded rod (42) is movably connected to the left frame wall of the support frame (32) via a bearing.

5. A coal mine tunneling enlargement device according to claim 2, characterized in that: None of the four stabilizing screws (44) are in contact with the support frame (32).

6. A coal mine tunneling enlargement device according to claim 2, characterized in that: The two displacement plates (43) have the same structure and are symmetrically distributed on the left and right.

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