Rock burst protection structure of adit excavation trolley

Abstract

The utility model relates to the technical field of tunnel engineering, in particular to a rock burst protection structure of an adit excavation trolley. The adit excavation trolley rock burst protection structure comprises a mounting base, a linear driving mechanism, a first driving block, a second driving block, an anti-explosion ceiling and a guide mechanism. The mounting base has a mounting plane; the linear driving mechanism is connected to the mounting plane and is provided with a driving end of which the moving direction is parallel to the mounting plane; the first driving block is connected with the driving end and is provided with a first wedge surface; the second driving block is provided with a second wedge face suitable for being attached to the first wedge face. The anti-explosion ceiling is connected with the second driving block and forms a distance with the mounting base; the guide mechanism is connected between the mounting base and the anti-explosion ceiling; when the attaching area of the first wedge face and the second wedge face is changed, the anti-explosion ceiling gets close to or away from the installation plane under the guiding effect of the guiding mechanism. The traveling efficiency of the trolley in the adit can be improved.

Description

Technical Field

[0001] This application relates to the field of tunnel engineering technology, specifically to a rockburst protection structure for a tunnel excavation trolley. Background Technology

[0002] During the excavation of adits, rock bursts or explosions may occur suddenly due to stress concentration or other factors. This phenomenon may pose a serious threat to construction personnel and equipment. Therefore, a series of safety measures are usually taken in mining and tunnel construction to prevent and deal with rock bursts, such as setting up protective structures on the trolley.

[0003] In existing technologies, support components are used to facilitate the disassembly and storage of protective structures. However, existing protective structures have the following problems: when the trolley travels in the support tunnel, the height of the tunnel top is not uniform. Therefore, when adjusting the height of the protective structure, it is necessary to rely on the manual adjustment of the inclined support rod, which requires the operator to stop and adjust before proceeding, thus reducing efficiency. Utility Model Content

[0004] To address the issue that existing adjustment methods require operators to stop the vehicle and manually adjust the inclined support rod before proceeding, resulting in low driving efficiency, this application provides a rockburst protection structure for a tunnel excavation trolley.

[0005] This application is achieved through the following technical solution:

[0006] A rockburst protection structure for a tunnel excavation trolley includes:

[0007] Mounting base, the mounting base having a mounting surface;

[0008] A linear drive mechanism, the linear drive mechanism being connected to the mounting plane and having a drive end whose direction of motion is parallel to the mounting plane;

[0009] A first driving block, the first driving block being connected to the driving end, the first driving block having a first wedge surface;

[0010] A second driving block, the second driving block having a second wedge surface adapted to conform to the first wedge surface;

[0011] An explosion-proof canopy, wherein the explosion-proof canopy is connected to the second drive block and forms a gap with the mounting base;

[0012] A guiding mechanism is connected between the mounting base and the explosion-proof canopy;

[0013] When the contact area between the first wedge surface and the second wedge surface changes, the explosion-proof canopy moves closer to or further away from the mounting plane under the guidance of the guide mechanism.

[0014] The rockburst protection structure for the tunnel excavation trolley provided in this application significantly improves the efficiency and stability of the protection height adjustment through an innovative combination of wedge-face transmission and linear drive. When the height of the tunnel top changes, the operator can horizontally move the first drive block through the linear drive mechanism. Utilizing the inclined coupling effect of the first and second wedge surfaces, the horizontal driving force is converted into the vertical displacement of the second drive block, causing the explosion-proof canopy to rise and fall vertically along the guide mechanism. Compared to the traditional manual adjustment mode of inclined support rods, this achieves stepless height adjustment of the explosion-proof canopy while in motion. The drive end moves along the installation plane. During parallel movement, the continuous change in the wedge contact area allows the canopy height to respond in real time, while the guide mechanism constrains the movement trajectory of the explosion-proof canopy, ensuring no tilting or swaying during the lifting process. This structure reduces the time required for adjusting the protective height, and the self-locking characteristic of the wedge contact effectively maintains the structural shape during sudden rockburst impacts. Combined with the buffer layer design of the explosion-proof canopy, it forms a dual protection mechanism. Compared with existing technologies, it not only solves the problem of work interruption during parking and adjustment, but also improves the system reliability through mechanical force transmission, making it particularly suitable for narrow tunnel environments with frequent changes in cross-sectional height.

[0015] In some alternative embodiments, the linear drive mechanism is configured as a lead screw and slider mechanism, wherein the drive slider in the lead screw and slider mechanism is connected to the first drive block as the drive end.

[0016] In some optional embodiments, a guide bar is provided on the mounting plane, the length direction of which is parallel to the movement direction of the drive end, wherein the first drive block is provided with a guide groove suitable for slidingly engaging with the guide bar.

[0017] In some alternative embodiments, the guide bar has a mounting groove, the drive screw and drive slider in the lead screw and slider mechanism are located in the mounting groove, and the drive shaft of the drive motor in the lead screw and slider mechanism passes through the guide bar and is connected to the drive screw for transmission.

[0018] In some alternative embodiments, a traction mechanism is connected between the mounting base and the explosion-proof canopy, the traction mechanism being configured to cause the explosion-proof canopy to have a tendency to move closer to the mounting plane.

[0019] In some alternative embodiments, the pulling mechanism is configured as a spring telescopic rod.

[0020] In some optional embodiments, the pulling mechanism is detachably connected to the mounting base and the explosion-proof canopy, respectively.

[0021] In some alternative embodiments, the guiding mechanism includes:

[0022] The skateboard is connected to the explosion-proof canopy;

[0023] A sliding guide rail is provided, which is connected to the mounting base, and the sliding plate is inserted into the sliding guide rail.

[0024] In some optional embodiments, the explosion-proof canopy has a connecting seat, and the sliding plate is slidably connected to the connecting seat so that the sliding plate can slide on the connecting seat in a direction parallel to the mounting plane, wherein the slide rail is slidably connected to the mounting base.

[0025] In some alternative embodiments, a support plate is connected to the slide rail, the support plate having an extension plate that is movably inserted into the mounting base so that the support plate can move closer to or further away from the mounting base in a direction parallel to the mounting plane.

[0026] Compared with the prior art, this application has the following advantages and beneficial effects:

[0027] The rockburst protection structure for the tunnel excavation trolley provided in this application significantly improves the efficiency and stability of the protection height adjustment through an innovative combination of wedge-face transmission and linear drive. When the height of the tunnel top changes, the operator can horizontally move the first drive block through the linear drive mechanism. Utilizing the inclined coupling effect of the first and second wedge surfaces, the horizontal driving force is converted into the vertical displacement of the second drive block, causing the explosion-proof canopy to rise and fall vertically along the guide mechanism. Compared to the traditional manual adjustment mode of inclined support rods, this achieves stepless height adjustment of the explosion-proof canopy while in motion. The drive end moves along the installation plane. During parallel movement, the continuous change in the wedge contact area allows the canopy height to respond in real time, while the guide mechanism constrains the movement trajectory of the explosion-proof canopy, ensuring no tilting or swaying during the lifting process. This structure reduces the time required for adjusting the protective height, and the self-locking characteristic of the wedge contact effectively maintains the structural shape during sudden rockburst impacts. Combined with the buffer layer design of the explosion-proof canopy, it forms a dual protection mechanism. Compared with existing technologies, it not only solves the problem of work interruption during parking and adjustment, but also improves the system reliability through mechanical force transmission, making it particularly suitable for narrow tunnel environments with frequent changes in cross-sectional height. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of the embodiments of this application and form part of this application, do not constitute a limitation on the embodiments of this application. In the drawings:

[0029] Figure 1 This is a schematic diagram of the rockburst protection structure of the tunnel excavation trolley provided in the embodiments of this application;

[0030] Figure 2 This is a schematic diagram of the explosion-proof ceiling structure provided in the embodiments of this application;

[0031] Figure 3 This is a schematic diagram of the guiding mechanism structure provided in an embodiment of this application;

[0032] Figure 4 This is a schematic diagram of the mating structure of the mounting base and support provided in the embodiments of this application;

[0033] Figure 5 This is a schematic diagram of the linear drive mechanism structure provided in the embodiments of this application;

[0034] Figure 6 This is a schematic diagram of the first driving block structure provided in an embodiment of this application.

[0035] The attached diagram shows the markings and corresponding component names:

[0036] 1-Explosion-proof canopy, 101-Connecting seat, 102-Arc-shaped mesh canopy, 2-Mounting base, 21-Sliding slot, 3-Guide mechanism, 31-Slide plate, 32-Slide rail, 33-Connecting ear, 4-Linear drive mechanism, 41-Drive screw, 42-Drive slider, 5-First drive block, 51-Guide slide, 6-Second drive block, 7-Guide strip, 8-Support plate, 81-Extension plate, 82-Flexible sleeve, 9-Tension mechanism. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this application are only for explaining this application and are not intended to limit this application.

[0038] like Figures 1-6 As shown in the figure, this application provides a rockburst protection structure for a tunnel excavation trolley. This structure includes a mounting base 2, a linear drive mechanism 4, a first drive block 5, a second drive block 6, an explosion-proof canopy 1, and a guide mechanism 3. The mounting base 2 serves as the load-bearing component of the entire protection structure and also as the connecting component, meaning the protection structure is connected to other equipment, such as a trolley, via the mounting base 2. The mounting base 2 has a mounting plane. The linear drive mechanism 4 is connected to the mounting plane and has a drive end whose direction of movement is parallel to the mounting plane. The first drive block 5 and the guide mechanism 6... The moving end is connected, so that the first driving block 5 moves along the direction parallel to the mounting plane together with the driving end. The first driving block 5 has a first wedge surface. When the mounting base 2 is connected to other equipment, the first wedge surface faces upward. The second driving block 6 has a second wedge surface suitable for fitting the first wedge surface, that is, the second wedge surface faces downward. The explosion-proof canopy 1 is connected to the second driving block 6 and forms a gap with the mounting base 2. The guide mechanism 3 is connected between the mounting base 2 and the explosion-proof canopy 1. When the contact area of ​​the first wedge surface and the second wedge surface changes, the explosion-proof canopy 1 moves closer to or away from the mounting plane under the guidance of the guide mechanism 3.

[0039] In this embodiment, the linear drive mechanism 4 refers to a motion mechanism with a drive source, which may be, for example, electric, pneumatic or hydraulic transmission.

[0040] In use, the linear drive mechanism 4 is activated to drive the first drive block 5 to translate. During the translation of the first drive block 5, the contact area between the first wedge surface and the second wedge surface will change, so that the second drive block 6 can rise or fall accordingly, thereby realizing the automatic adjustment of the height of the explosion-proof canopy 1. Due to the setting of the guide mechanism 3, the explosion-proof canopy 1 will not tilt during the rising or falling process.

[0041] The rockburst protection structure for the tunnel excavation trolley provided in this application significantly improves the efficiency and stability of the protection height adjustment through an innovative combination of wedge surface transmission and linear drive. When the height of the tunnel top changes, the operator can horizontally move the first drive block 5 through the linear drive mechanism 4. Utilizing the inclined coupling effect of the first and second wedge surfaces, the horizontal driving force is converted into the vertical displacement of the second drive block 6, driving the explosion-proof canopy 1 to rise and fall vertically along the guide mechanism 3. Compared with the traditional manual adjustment mode of inclined support rods, this achieves stepless height adjustment of the explosion-proof canopy 1 during movement. The drive end is installed along the... When moving in parallel plane, the continuous change in the contact area of ​​the wedge surface allows the canopy height to respond in real time. The guide mechanism 3 constrains the movement trajectory of the explosion-proof canopy 1, ensuring that there is no swaying or shaking during the lifting process. This structure can reduce the time required for adjusting the protective height, and the self-locking characteristic of the wedge surface contact can effectively maintain the structural shape in the event of a sudden rockburst impact. Combined with the buffer layer design of the explosion-proof canopy 1, a dual protection mechanism is formed. Compared with the existing technology, it not only solves the problem of work interruption during parking adjustment, but also improves the reliability of the system through mechanical force transmission. It is particularly suitable for narrow tunnel environments where the cross-sectional height changes frequently.

[0042] In some alternative embodiments, see [reference]. Figure 5 The linear drive mechanism 4 is configured as a lead screw and slider mechanism, wherein the drive slider 42 in the lead screw and slider mechanism is connected to the first drive block 5 as the drive end.

[0043] In this embodiment, the lead screw and slider mechanism has high transmission accuracy and can achieve precise control of the height of the explosion-proof canopy 1.

[0044] In some optional embodiments, reference may also be made to Figure 1 and Figure 6 A guide bar 7 is provided on the mounting plane, with its length direction parallel to the direction of movement of the drive end. The guide bar 7 is generally rectangular. The first drive block 5 is provided with a guide groove 51 suitable for sliding fit with the guide bar 7. Thus, the first drive block 5 can be fitted onto the guide bar 7 through the guide groove 51, and the guide bar 7 can guide the first drive block 5, preventing the first drive block 5 from deviating in the direction of movement and causing radial compression to the drive screw 41.

[0045] In some alternative embodiments, see further. Figure 1 The guide bar 7 has a mounting groove. The drive screw 41 and drive slider 42 in the screw-slider mechanism are located in the mounting groove. The two ends of the drive screw 41 are rotatably connected to the groove wall of the mounting groove so that the drive screw 41 can rotate freely in the mounting groove. The drive shaft of the drive motor in the screw-slider mechanism passes through the guide bar 7 and is connected to the drive screw 41. The drive motor can be connected to the mounting base 2, specifically to the mounting plane. Thus, the drive motor can drive the drive screw 41 to rotate, and then drive the drive slider 42 to slide, thereby driving the first drive block 5 to move.

[0046] In this embodiment, the design of the mounting groove can provide a certain degree of protection for the drive screw 41, preventing it from being easily damaged by external forces.

[0047] In some alternative embodiments, see [reference]. Figure 1 A traction mechanism 9 is connected between the mounting base 2 and the explosion-proof canopy 1. The traction mechanism 9 is configured to make the explosion-proof canopy 1 have a tendency to move closer to the mounting plane.

[0048] In this embodiment, the traction mechanism 9 prevents the explosion-proof canopy 1 from shifting up and down due to vibration during the trolley's movement, ensuring the stability of the explosion-proof canopy 1. In actual implementation, the traction mechanism 9 can be configured as a spring telescopic rod.

[0049] In some optional embodiments, the traction mechanism 9 is detachably connected to the mounting base 2 and the explosion-proof canopy 1 respectively; in specific implementation, connecting plates can be set at both ends of the traction mechanism 9, and the connecting plates have threaded holes. The detachable connection of the traction mechanism 9 is achieved by bolts to the threaded holes, which facilitates the maintenance and replacement of the traction mechanism 9.

[0050] In some optional embodiments, reference may also be made to Figure 1 and Figure 3 The guide mechanism 3 includes a slide plate 31 and a slide rail 32; the slide plate 31 is connected to the explosion-proof canopy 1; the slide rail 32 is connected to the mounting base 2, and the slide plate 31 is inserted into the slide rail 32; wherein, the number of slide plates 31 and slide rails 32 is set to four, and the four slide rails 32 are arranged in parallel and in a rectangular arrangement.

[0051] In this embodiment, the explosion-proof canopy 1 is guided by the sliding plate 31 and the sliding guide rail 32. The structure is simple and the cost is low. Moreover, the sliding plates 31 restrict each other, which can make the up-and-down movement direction of the explosion-proof canopy 1 more accurate and avoid the position of the explosion-proof canopy 1 in the horizontal plane from being deviated.

[0052] In some optional embodiments, reference may also be made to Figures 1-3 The explosion-proof canopy 1 has a connecting seat 101, which is connected to the concave surface of the arc-shaped mesh canopy 102 to form a complete explosion-proof canopy 1. The specific shape of the connecting seat 101 can be designed as a frame. The sliding plate 31 is slidably connected to the connecting seat 101 so that the sliding plate 31 can slide on the connecting seat 101 in a direction parallel to the installation plane. In actual implementation, a sliding groove is opened on the connecting seat 101, and the end of the sliding plate 31 away from the sliding groove guide rail 32 can be fitted into the sliding groove to form a sliding fit. The sliding plate 31 is also provided with A connecting ear 33 is provided, and a set hole is provided on the connecting ear 33. The connecting ear 33 is located in the sliding groove. Thus, by the cooperation of the set bolt and the set hole, the sliding of the slide plate 31 on the connecting seat 101 can be restricted, thereby realizing the positioning of the connecting seat 101. The sliding guide rail 32 is slidably connected to the mounting base 2, so that the guide mechanism 3 as a whole can move relative to the mounting base 2 and the explosion-proof canopy 1. This design can change the structural layout under the explosion-proof canopy 1, which is conducive to the effective utilization of the space under the explosion-proof canopy 1.

[0053] In some optional embodiments, reference may also be made to Figure 1 and Figure 4 A support plate 8 is connected to the slide rail 32. The surface of the support plate 8 is flush with the mounting plane. The support plate 8 has an extension plate 81 located on the side of the support plate 8. The extension plate 81 is a rectangular plate. The extension plate 81 is movably inserted into the mounting base 2 so that the support plate 8 can move closer to or away from the mounting base 2 in a direction parallel to the mounting plane. In actual implementation, the mounting base 2 has a movable slot. The extension plate 81 cooperates with the movable slot to achieve a sliding fit. The extension plate 81 is provided with necessary limiting structures such as shoulders and blocks to prevent the extension plate 81 from completely disengaging from the movable slot. A flexible sleeve 82 can also be fitted onto the extension plate 81. The flexible sleeve 82 is adapted to the shape of the movable slot, meaning that the flexible sleeve 82 can be inserted into the movable slot. Thus, when most of the extension plate 81 enters the mounting base 2, the flexible sleeve 82 can isolate the mounting base 2 from the support plate 8, avoiding collisions between the two during transportation. In specific implementation, the flexible sleeve 82 can be designed as a rubber sleeve.

[0054] The specific embodiments described above illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application is presented in conjunction with some embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. To provide a thorough understanding of this application, many specific details are included in the above description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0055] It should be noted that in this specification, similar reference numerals and letters in the above figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this application, it should be noted that unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0056] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A rockburst protection structure for a tunnel excavation trolley, characterized in that, include: Mounting base (2), the mounting base (2) having a mounting surface; A linear drive mechanism (4) is connected to the mounting plane and has a drive end whose movement direction is parallel to the mounting plane; A first driving block (5) is connected to the driving end, and the first driving block (5) has a first wedge surface; The second driving block (6) has a second wedge surface adapted to fit the first wedge surface; An explosion-proof canopy (1) is connected to the second drive block (6) and forms a gap with the mounting base (2); A guiding mechanism (3) is connected between the mounting base (2) and the explosion-proof canopy (1); When the contact area between the first wedge surface and the second wedge surface changes, the explosion-proof canopy (1) moves closer to or further away from the mounting plane under the guidance of the guide mechanism (3).

2. The rockburst protection structure for the tunnel excavation trolley according to claim 1, characterized in that, The linear drive mechanism (4) is configured as a lead screw and slider mechanism, wherein the drive slider (42) in the lead screw and slider mechanism is connected to the first drive block (5) as the drive end.

3. The rockburst protection structure for the tunnel excavation trolley according to claim 2, characterized in that, The mounting plane is provided with a guide strip (7) whose length direction is parallel to the movement direction of the drive end, wherein the first drive block (5) is provided with a guide groove (51) suitable for sliding cooperation with the guide strip (7).

4. The rockburst protection structure for the tunnel excavation trolley according to claim 3, characterized in that, The guide bar (7) has a mounting groove, and the drive screw (41) and drive slider (42) in the screw-slider mechanism are located in the mounting groove. The drive shaft of the drive motor in the screw-slider mechanism passes through the guide bar (7) and is connected to the drive screw (41) for transmission.

5. The rockburst protection structure for the tunnel excavation trolley according to claim 1, characterized in that, A traction mechanism (9) is connected between the mounting base (2) and the explosion-proof canopy (1), and the traction mechanism (9) is configured to make the explosion-proof canopy (1) have a tendency to move closer to the mounting plane.

6. The rockburst protection structure for the tunnel excavation trolley according to claim 5, characterized in that, The traction mechanism (9) is configured as a spring telescopic rod.

7. The rockburst protection structure for the tunnel excavation trolley according to claim 5, characterized in that, The pulling mechanism (9) is detachably connected to the mounting base (2) and the explosion-proof canopy (1).

8. The rockburst protection structure for the tunnel excavation trolley according to claim 1, characterized in that, The guiding mechanism (3) includes: Slide plate (31), said slide plate (31) being connected to the explosion-proof canopy (1); The slide rail (32) is connected to the mounting base (2), and the slide plate (31) is inserted into the slide rail (32).

9. The rockburst protection structure for the tunnel excavation trolley according to claim 8, characterized in that, The explosion-proof canopy (1) has a connecting seat (101), and the sliding plate (31) is slidably connected to the connecting seat (101) so that the sliding plate (31) can slide on the connecting seat (101) in a direction parallel to the mounting plane, wherein the slide rail (32) is slidably connected to the mounting base (2).

10. The rockburst protection structure for the tunnel excavation trolley according to claim 8, characterized in that, A support plate (8) is connected to the slide rail (32). The support plate (8) has an extension plate (81). The extension plate (81) is movably inserted into the mounting base (2) so that the support plate (8) can move closer to or further away from the mounting base (2) in a direction parallel to the mounting plane.

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