Temporary support device for coal mine shed roadway

Abstract

The utility model discloses a coal mine shed roadway temporary supporting device which comprises a telescopic top frame, the telescopic top frame comprises fixed arms arranged in parallel, telescopic arms driven by hydraulic telescopic oil cylinders are arranged in the fixed arms, a second connecting rod is fixedly connected between the front ends of the telescopic arms on the two sides, and a beam trimmer is arranged on the second connecting rod. The telescopic stand columns are symmetrically arranged below the telescopic top frame and comprise fixing columns, telescopic columns driven by lifting hydraulic oil cylinders are arranged in the fixing columns, the front ends of the telescopic columns on the two sides are hinged to the lower portions of the fixing arms on the two sides respectively, and the lower ends of the fixing columns on the two sides are hinged to grafting combined fasteners. The grafting combination fasteners on the two sides are fixedly connected to the two sides of a large frame of the heading machine respectively, and a connecting column is connected between the fixing columns on the two sides and connected to the upper portion of a cutting arm of the heading machine through a turnover hydraulic cylinder. The device can safely, reliably and quickly support the empty roof area, the safety of tunneling production is greatly improved, the production efficiency is greatly improved, and the device is convenient to use.

Description

Technical Field

[0001] This utility model belongs to the technical field of temporary support for coal mine shed roadways, and specifically relates to a temporary support device for coal mine shed roadways. Background Technology

[0002] Currently, temporary support in coal mine roof-supported roadways uses a "cutting head + support beam" method. After each coal cutting operation, the support beam is first installed on the tunneling machine's cantilever, then the roof beam is placed in the support beam's groove, and finally, the tunneling machine's cantilever lifts the support beam to securely protect the roof. This temporary support method has safety hazards. The tunneling machine's cutting head is not firmly anchored to the ground and is suspended in mid-air. When adjusting the roof beam's centerline or the connection between the roof beam and the roof legs, misoperation of the cutting head can easily lead to injuries.

[0003] Meanwhile, with the development of intelligent tunneling technology, tunneling equipment is constantly integrating various safety auxiliary functions. Some equipment has installed sensing devices around the work area to realize control functions such as automatic alarm or linkage shutdown when personnel approach. Although such safety devices improve the protection capability of the equipment itself, they also bring new operational limitations. When using the "cutting head + beam support" temporary support method to support the beam, one person on each side of the tunneling machine is required to support the beam. After the installation of electronic fences, it is impossible to operate. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a temporary support device for coal mine roof roadways.

[0005] The technical solution adopted by this utility model is as follows: a temporary support device for coal mine roof tunnels, including a telescopic roof frame, telescopic columns, and grafting combination fasteners. The telescopic roof frame includes parallel fixed arms, and a telescopic arm driven by a hydraulic telescopic cylinder is installed inside the fixed arm. The two fixed arms are connected and fixedly connected by a first connecting rod. A second connecting rod is fixedly connected between the front ends of the two telescopic arms. A beam support is installed on the second connecting rod. The telescopic columns are symmetrically arranged below the telescopic roof frame. The telescopic columns include fixed columns, and a telescopic column driven by a lifting hydraulic cylinder is installed inside the fixed column. The front ends of the two telescopic columns are respectively hinged to the lower ends of the two fixed arms. The lower ends of the two fixed columns are hinged to the grafting combination fasteners. The two grafting combination fasteners are respectively connected and fixed to both sides of the tunneling machine frame. A connecting column is connected between the two fixed columns. The connecting column is connected to the upper part of the tunneling machine cutting arm through a tilting hydraulic cylinder or a rotating hydraulic cylinder.

[0006] Furthermore, the grafting combination fastener includes a vertically connected panel and side plate, which are connected to the tunneling machine frame using fasteners.

[0007] Furthermore, the tilting or slewing hydraulic cylinder, the lifting hydraulic cylinder, and the hydraulic telescopic cylinder are connected to the tunneling machine via high-pressure oil pipes.

[0008] Furthermore, when the telescopic boom extends forward to its forward stop point, the telescopic boom is located behind the cutting head of the tunneling machine.

[0009] This utility model has the following beneficial effects:

[0010] 1. Compared with the traditional process of using a beam support device in conjunction with a tunneling machine cutting head as temporary support, this utility model eliminates the need to restart the tunneling machine cutting head during use. Simply operating various hydraulic cylinder control valves is sufficient to safely raise the support beam, providing temporary top support. This avoids accidents caused by misoperation of the cutting head, effectively improving the technical problem of temporary support safety in tunnel excavation, which has plagued coal mine production, and increasing the safety factor.

[0011] 2. It can be matched with various models of tunneling machines, realizing the organic combination of tunneling machine and support device, enhancing the comprehensive function of tunneling machine, greatly shortening support time, and improving tunnel excavation efficiency.

[0012] 3. This onboard temporary support device can provide safe, reliable, and rapid support for the unsupported roof area, greatly improving the safety of tunneling production, significantly increasing production efficiency, and is easy to use. Attached Figure Description

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

[0014] Figure 2 This is a top view of the present invention.

[0015] In the diagram: 1-telescopic top frame, 2-telescopic column, 3-tilting hydraulic cylinder, 4-grafting combination fastener, 5-beam support, 6-telescopic boom, 7-tunneling machine frame, 8-connecting column. Detailed Implementation

[0016] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a temporary support device for coal mine roof tunnels.

[0017] like Figure 1 and Figure 2As shown, a temporary support device for a coal mine tunnel includes a telescopic roof frame 1, telescopic columns 2, and grafting combination fasteners 4. The telescopic roof frame 1 includes parallel fixed arms, with a telescopic arm 6 driven by a hydraulic telescopic cylinder inside the fixed arm. The two fixed arms are connected and fixedly connected by a first connecting rod. A second connecting rod is fixedly connected between the front ends of the two telescopic arms. A beam support 5 is installed on the second connecting rod. The telescopic columns 2 are symmetrically arranged below the telescopic roof frame. The telescopic columns 2 include fixed columns, with a telescopic column driven by a lifting hydraulic cylinder inside the fixed column. The front ends of the two telescopic columns are respectively hinged to the lower ends of the two fixed arms. The lower ends of the two fixed columns are hinged to the grafting combination fasteners 4. The grafting combination fasteners 4 are respectively connected and fixed to both sides of the tunneling machine frame 7. A connecting column 8 is connected between the two fixed columns. The connecting column 8 is connected to the upper part of the tunneling machine cutting arm by a tilting hydraulic cylinder 3 or a rotary hydraulic cylinder.

[0018] In this embodiment, the grafting combination fastener 4 includes a vertically connected panel and side plate. The telescopic top frame 1 and the telescopic column 2 together form a gantry-type main top frame. The gantry-type main top frame is connected to the tunneling machine frame 7 via fasteners through the panel and side plate of the grafting combination fastener 4. The tilting hydraulic cylinder 3 is connected to the connecting column 8 and the tunneling machine cutting arm via pins. The telescopic top frame 1 is extended and retracted through the telescopic arm 6, and the beam support 5 provides beam support. When the telescopic arm 6 extends forward to the front stop point, the telescopic top frame 1 is located behind the tunneling machine cutting head, and the distance A between the front end of the telescopic top frame 1 and the tunneling machine cutting head is 190mm.

[0019] The tilting hydraulic cylinder 3 or slewing hydraulic cylinder, lifting hydraulic cylinder, and hydraulic telescopic cylinder are connected to the tunneling machine via high-pressure oil pipes. The operator activates the temporary support by operating the multi-way directional valve. During machine-mounted temporary support operation, one hydraulic oil line from the tunneling machine is used, connected to a two-position three-way valve, with one position switched to the multi-way directional valve of the support device. Following the instructions on the multi-way valve label, the actuators—tilting hydraulic cylinder 3 or slewing hydraulic cylinder, lifting hydraulic cylinder, and hydraulic telescopic cylinder—drive the structural components to complete the support operation. A hydraulic lock ensures the support is secured after operation, effectively guaranteeing the safety and efficiency of the construction personnel.

[0020] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A temporary support device for coal mine shed roadways, characterized in that, The telescopic top frame (1), telescopic columns (2), and grafting combination fasteners (4) are included. The telescopic top frame (1) includes parallel fixed arms. A telescopic arm (6) driven by a hydraulic telescopic cylinder is installed inside the fixed arm. The fixed arms on both sides are connected and fixed by a first connecting rod. A second connecting rod is fixedly connected between the front ends of the telescopic arms (6) on both sides. A beam support (5) is installed on the second connecting rod. The telescopic columns (2) are symmetrically arranged below the telescopic top frame (1). The telescopic columns (2) include fixed columns. A telescopic column driven by a lifting hydraulic cylinder is installed inside the fixed column. The front ends of the telescopic columns on both sides are respectively hinged to the lower ends of the fixed arms on both sides. The lower ends of the fixed columns on both sides are hinged to the grafting combination fasteners (4). The grafting combination fasteners (4) on both sides are respectively connected and fixed to the two sides of the tunneling machine frame. A connecting column (8) is connected between the fixed columns on both sides. The connecting column (8) is connected to the upper part of the tunneling machine cutting arm by a tilting hydraulic cylinder (3) or a rotary hydraulic cylinder.

2. The temporary support device for coal mine shed roadways according to claim 1, characterized in that, The grafting combination fastener (4) includes a vertically connected panel and side plate, and the panel and side plate are connected to the tunneling machine frame using fasteners.

3. The temporary support device for coal mine shed roadways according to claim 1, characterized in that, The tilting hydraulic cylinder (3) or slewing hydraulic cylinder, lifting hydraulic cylinder and hydraulic telescopic cylinder are connected to the tunneling machine through high-pressure oil pipes.

4. The temporary support device for coal mine roof-supported roadways according to any one of claims 1 to 3, characterized in that, When the telescopic boom (6) extends forward to the front stop point, the telescopic top frame (1) is located behind the cutting head of the tunneling machine.

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