Safety supporting device for broken roof of underground mine

Abstract

The utility model relates to the technical field of safety supporting devices, and provides an underground mine broken roof safety supporting device which comprises a supporting frame, a lifting mechanism arranged on the lower portion of the supporting frame, a steel mesh plate arranged at the top end of the supporting frame, a motor arranged on the supporting frame, and a lead screw coaxially connected with an output shaft of the motor. The screw rod is in threaded transmission connection with a protection plate, the protection plate is horizontally and linearly arranged below the steel mesh plate in a sliding mode, the steel mesh plate is arranged on the supporting frame to form first protection, the protection plate is linearly arranged below the steel mesh plate in a sliding mode to form second protection, shielding protection is conducted on constructors below, and therefore the phenomenon that in the injection process, the constructors are damaged is avoided. And when the top plate is damaged, the stone slides down to hurt constructors, so that the construction safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to safety support device technical field, specifically, relate to a kind of underground mine broken roof safety support device. BACKGROUND

[0002] In a mining area, the roof and floor surrounding rock of ore body is mainly composed of quartz soda long rock, with biotite (or two cloud stone) and a small amount of garnet biotite, dolomite quartz schist, etc., and gabbro and shonkinite are seen in local area. Due to the low strength of rock stratum and joint fissure development, the roof of underground mine is often poor in stability, and is prone to caving. Under the action of mine pressure, the broken roof is prone to fracture, especially in the case of difficult maintenance in working face control area, which is more likely to cause local roof fall accident.

[0003] When the roof of underground mine is damaged, such as obvious cracks on the surface, blasting means is usually used to remove broken rock stratum; and in the case of slight cracks, concrete can be injected for subsequent installation of roadway. However, in the process of injecting concrete, there are certain safety hazards for users when injecting concrete due to lack of sufficient protection measures under the rock stratum. SUMMARY

[0004] The utility model aims at providing a kind of underground mine broken roof safety support device, solve the problem of safety hazard when injecting concrete in the inside of roof gap of underground mine.

[0005] The utility model realizes the following technical scheme: a kind of underground mine broken roof safety support device, including support frame, lifting mechanism is arranged in the lower part of support frame, steel mesh board is arranged at the top of support frame, motor is arranged on support frame, the output shaft of motor is coaxially connected with screw rod, the protection plate is threadedly connected on screw rod, and the protection plate is linearly slidably arranged below steel mesh board.

[0006] Further, the screw rod is provided with forward thread and reverse thread, and the screw rod is threadedly connected with two protection plates that are close to each other or away from each other.

[0007] Further, at least two parallel arranged screw rods are arranged on the support frame, or at least one screw rod and one guide rod are arranged on the support frame.

[0008] Further, the opposite ends of the steel mesh board are provided with pressure strips connected with the support frame for limiting the steel mesh board on the support frame.

[0009] Further, the lifting mechanism includes a base plate and a hydraulic cylinder between the base plate and the support frame.

[0010] Preferably, positioning holes are formed in the base plate, and ground nails are arranged in the positioning holes.

[0011] Preferably, a guide cylinder is arranged on the base plate, and an insertion rod is arranged at the lower end of the support frame and is slidably inserted into the guide cylinder.

[0012] Further, the protection plate is slidably arranged on the support frame.

[0013] The underground mine broken roof safety support device has at least the following advantages and beneficial effects: the steel mesh plate is arranged on the support frame to form a first protection, and the protection plate is linearly slidably arranged below the steel mesh plate to form a second protection, so that the construction personnel below are shielded and protected, the construction personnel are prevented from being injured by broken roof and falling stones during injection, and the safety of construction is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The underground mine broken roof safety support device is provided with a structure schematic view.

[0015] Figure 2 The underground mine broken roof safety support device is provided with a structure schematic view.

[0016] Figure 3 The underground mine broken roof safety support device is provided with a structure schematic view.

[0017] Figure 4 The underground mine broken roof safety support device is provided with a structure schematic view.

[0018] Reference signs: 1-support frame, 11-pressing strip, 12-cross shaft, 2-lifting mechanism, 21-base plate, 210-positioning hole, 22-hydraulic cylinder, 23-guide cylinder, 24-insertion rod, 3-steel mesh plate, 4-motor, 41-screw rod, 42-guide rod, 5-protection plate, 6-ground nail. DETAILED DESCRIPTION

[0019] The specific embodiments are described below in conjunction with the accompanying drawings.

[0020] EMBODIMENT

[0021] As Figures 1-4As shown, this embodiment mainly discloses a safety support device for the broken roof of an underground mine, including a support frame 1, a lifting mechanism 2 at the lower part of the support frame 1, a steel mesh plate 3 at the top of the support frame 1, a motor 4 on the support frame 1, a lead screw 41 coaxially connected to the output shaft of the motor 4, and a protective plate 5 threadedly connected to the lead screw 41. The protective plate 5 is horizontally and linearly slidably arranged below the steel mesh plate 3. Specifically, the support frame 1 can be a square frame structure welded from steel. The steel mesh plate 3 is tautly arranged on the support frame 1, forming the first line of protection, effectively resisting the sliding of larger-sized falling rocks, while the protective plate 5 below the steel mesh plate 3 constitutes the second line of protection, effectively resisting the falling of most small stones. When it is necessary to inject concrete into the cracks in the mine roof, the support device can be placed below the corresponding position, and the support frame 1 can be raised to a suitable position by the lifting mechanism 2. The concrete injection device is inserted into the crack after passing through the steel mesh plate 3. Driven by the motor 4, the lead screw 41 is rotated, so that the steel mesh plate 3 is below the injection position, which shields and protects the construction personnel below, thereby avoiding roof damage and falling rocks that may injure the construction personnel during the injection process, thus improving the safety of construction.

[0022] Furthermore, in specific implementation, the lead screw 41 provided in this embodiment of the present invention is respectively provided with forward and reverse threads, and two protective plates 5 are threadedly fitted onto the lead screw 41, which are close to or far apart from each other. Specifically, the injection device is inserted between the two protective plates 5. By rotating the motor 4 in both directions, the lead screw 41 is driven to rotate in both directions, thereby causing the two protective plates 5 to move closer or further apart from each other. During support, the two protective plates 5 are brought close together to form an effective protective zone. In addition, the protective plates 5 are provided with avoidance holes for the injection device, which can flexibly adapt to the mining environment and ensure the safety of construction personnel.

[0023] Furthermore, in specific implementations, the support frame 1 provided in this embodiment of the present invention is provided with at least two parallel-arranged lead rods 41, or the support frame 1 is provided with at least one parallel-arranged lead rod 41 and one guide rod 42. This effectively ensures that the protective plate 5 moves horizontally and linearly along the lead rod 41, while enhancing the stability and load-bearing capacity of the structure. In addition, the parallel design can reduce the movement deviation generated during support, ensure that the protective plate 5 moves synchronously, and improve the reliability of the entire support system.

[0024] Furthermore, in a specific implementation, pressure strips 11 are respectively provided at both ends of the steel mesh plate 3 provided in this embodiment of the present invention, which are connected to the support frame 1 and used to limit the steel mesh plate 3 on the support frame 1. Specifically, the pressure strips 11 are connected to the support frame 1 through a through horizontal shaft 12, which can effectively realize the detachable connection of the steel mesh plate 3, and facilitate the maintenance, cleaning and replacement of the steel mesh plate 3.

[0025] Furthermore, in a specific implementation, the lifting mechanism 2 provided in this embodiment of the present invention includes a base plate 21 and a hydraulic cylinder 22 between the base plate 21 and the support frame 1. The base plate 21 provides the necessary stability and support, and the hydraulic cylinder 22 allows for quick and flexible adjustment of the support height, improving construction efficiency and adapting to changes in different mines.

[0026] Preferably, the base plate 21 has a positioning hole 210, and a ground nail 6 is fitted into the positioning hole 210. Through the cooperation of the positioning hole 210 and the ground nail 6, good fixation can be achieved during the installation of the support device, ensuring the stability and accuracy of the device during operation and reducing safety hazards caused by accidental movement.

[0027] Preferably, a guide cylinder 23 is provided on the base plate 21, and a plug rod 24 that slides and engages with the guide cylinder 23 is provided at the lower end of the support frame 1. This ensures that the support frame 1 maintains stable sliding during the lifting and lowering process.

[0028] Furthermore, in a specific implementation, the protective plate 5 provided in this embodiment of the present invention is slidably placed on the support frame 1. This allows the support frame 1 to effectively share the load of the protective plate 5, reduce the force on the lead screw 41, prevent the lead screw 41 from bending, and improve the service life and operational stability of the device.

Claims

1. A safety support device for fractured roof in underground mines, characterized in that, The support frame (1) is provided with a lifting mechanism (2) at the bottom. A steel mesh plate (3) is provided at the top of the support frame (1). A motor (4) is provided on the support frame (1). A lead screw (41) is coaxially connected to the output shaft of the motor (4). A protective plate (5) is threadedly connected to the lead screw (41). The protective plate (5) is horizontally and linearly slidably arranged below the steel mesh plate (3).

2. The underground mine fractured roof safety support device according to claim 1, characterized in that, The lead screw (41) is provided with forward thread teeth and reverse thread teeth respectively, and the lead screw (41) is threaded with two protective plates (5) that are close to or far apart from each other.

3. A safety support device for fractured roof in underground mines according to claim 1, characterized in that, The support frame (1) is provided with at least two parallel threaded rods (41), or the support frame (1) is provided with at least one parallel threaded rod (41) and one guide rod (42).

4. A safety support device for fractured roof in underground mines according to claim 1, characterized in that, The steel mesh plate (3) is provided with pressure strips (11) at its opposite ends, which are connected to the support frame (1) and used to limit the steel mesh plate (3) to the support frame (1).

5. A safety support device for fractured roof in underground mines according to claim 1, characterized in that, The lifting mechanism (2) includes a base plate (21) and a hydraulic cylinder (22) between the base plate (21) and the support frame (1).

6. A safety support device for fractured roof in underground mines according to claim 5, characterized in that, The substrate (21) has a positioning hole (210), and a ground nail (6) is fitted inside the positioning hole (210).

7. A safety support device for fractured roof in underground mines according to claim 5, characterized in that, A guide cylinder (23) is provided on the base plate (21), and a plug rod (24) is provided at the lower end of the support frame (1) to slide and engage with the guide cylinder (23).

8. A safety support device for fractured roof in underground mines according to claim 1, characterized in that, The protective plate (5) is slidably placed on the support frame (1).

Images