CN211692524U

CN211692524U - Underground supporting device for mine

Info

Publication number: CN211692524U
Application number: CN202020290996.5U
Authority: CN
Inventors: 范进才; 孙飞
Original assignee: Hainan Shanjin Mining Co ltd
Current assignee: Hainan Shanjin Mining Co ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-10-16
Anticipated expiration: 2030-03-11

Abstract

The utility model discloses a mining underground supporting device, including the stock, the stock top is connected with platelike anchor body, and anchor body upper surface is equipped with the anchor head, wears to be equipped with pole end nut, bearing plate, tray, backing plate from the bottom up on the stock in proper order, pole end nut threaded connection is in the stock bottom, bearing plate passes through the tray with the backing plate and is connected, the backing plate top is equipped with the extension board, the one end and the stock swing joint of extension board, the upper surface of extension board passes through spring coupling with anchor body's lower surface. The utility model provides a buffer and compensation for the support failure, thereby gaining time for personnel to escape, and the safety of the device is obviously increased; the rock-soil layer can be supported in multiple directions and in a large area, and the efficiency is improved; the performance is stable, a larger supporting force is provided, and the service life is longer.

Description

Underground supporting device for mine

Technical Field

The utility model relates to a mining protection technical field specifically is a mining strutting arrangement in pit.

Background

The support is a retaining, reinforcing and protecting measure adopted for the top, the side wall and the surrounding environment of the channel in order to ensure the safety of the construction of the underground structure and the surrounding environment of the foundation pit.

The anchor rod is the most basic component of roadway support in the contemporary coal mine, and the anchor rod reinforces the surrounding rocks of the roadway together to support the surrounding rocks per se. The anchor rod is not only used in mines, but also in engineering technology for reinforcing main bodies of slopes, tunnels and dams. The anchor rod is used as a tension member penetrating into the stratum, one end of the anchor rod is connected with an engineering structure, the other end of the anchor rod penetrates into the stratum, the whole anchor rod is divided into a free section and an anchoring section, the free section is an area for transmitting the tension at the head of the anchor rod to an anchoring body, and the anchor rod is used for applying prestress to the anchor rod.

The anchor bolt support is a reinforcing support mode adopted in surface engineering such as side slopes, rock-soil deep foundation pits and the like and underground chamber construction such as tunnels, stopes and the like. The method is characterized in that a pole column is made of metal pieces, wood pieces, polymer pieces or other materials, and is driven into a hole which is drilled in advance in an earth surface rock body or a rock body around a chamber, and the special structure of the head part and the pole body and a tail supporting plate (which can be omitted) are utilized, or the surrounding rock and a stable rock body are combined together by depending on the bonding action to generate the suspension effect, the combination beam effect and the reinforcing effect, so that the aim of supporting is fulfilled. The method has the advantages of low cost, good supporting effect, simple and convenient operation, flexible use, less occupied construction clearance and the like.

However, the existing anchor bolt support still has a great improvement space, when the rock stratum structure is loosened and changed due to accidents (such as water seepage, vibration collapse and the like), the support is often ineffective, but a buffer mechanism cannot be provided, so that accidents are prevented, and casualties are reduced. Thus, the safety requirements for a bolting based mining downhole support device are further increased.

SUMMERY OF THE UTILITY MODEL

For overcoming the not enough of prior art, the utility model provides a mining underground supporting device solves the not enough that the potential safety hazard is big when rock stratum structure becomes flexible to appear in current mining underground supporting device.

The utility model provides a technical scheme that above-mentioned problem adopted is:

the utility model provides a mining underground supporting device, includes the stock, the stock top is connected with platelike anchor body, and anchor body upper surface is equipped with the anchor head, wears to be equipped with pole end nut, bearing plate, tray, backing plate from the bottom up on the stock in proper order, pole end nut threaded connection is in stock bottom, bearing plate passes through the tray with the backing plate and is connected, the backing plate top is equipped with the extension board, the one end and the stock swing joint of extension board, the upper surface of extension board passes through spring coupling with anchor body's lower surface.

The utility model discloses an innovation point is: under the normal condition, the spring is in tensile state, and when the stratum structure appears not hard up, changes owing to unexpected (like oozing water, vibration collapse etc.) the spring deformation volume diminishes, provides an ascending pulling force for the extension board, and the extension board is tamped the ground layer this moment, provides a buffering and compensation for strutting the inefficacy to for the personnel flee the time of winning, the security of device obviously increases.

Preferably, the anchor rod is provided with a first hinge, the support plate is provided with a second hinge, the first hinge is connected with the second hinge through a screw rod hinge, and the screw rod is provided with a hinge nut.

Preferably, the number of the support plates is at least 2, and the sum of the lengths of the 2 support plates is larger than the width of the anchoring body.

Preferably, the tray is a circular truncated cone, and the diameter of the upper surface of the tray is larger than that of the lower surface of the tray.

Preferably, the spring is a composite spring made of a metal coil spring and rubber.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; they may be mechanically coupled, directly coupled, or indirectly coupled through intervening agents, both internally and/or in any other manner known to those skilled in the art. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Compared with the prior art, the utility model, following beneficial effect has:

(1) the device provides buffering and compensation for support failure, thereby gaining time for personnel to escape and obviously improving the safety of the device;

(2) the rock-soil layer can be supported in multiple directions and in a large area, and the efficiency is improved;

(3) the performance is stable, a larger supporting force is provided, and the service life is longer.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the connection structure of the anchor rod and the support plate of the present invention.

Reference numbers and corresponding part names in the drawings: 1. the device comprises a rod end nut, 2, a bearing plate, 3, a tray, 4, a backing plate, 5, an anchor rod, 6, a support plate, 7, a spring, 8, an anchor body, 9, an anchor head, 10, a screw rod, 11, a hinge nut, 51, a first hinge, 61 and a second hinge.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.

Example 1

As shown in fig. 1 and 2, a mining underground supporting device comprises an anchor rod 5, the top of the anchor rod 5 is connected with a platy anchoring body 8, the upper surface of the anchoring body 8 is provided with an anchor head 9, a rod end nut 1, a bearing plate 2, a tray 3 and a base plate 4 are sequentially arranged on the anchor rod 5 in a penetrating mode from bottom to top, the rod end nut 1 is in threaded connection with the bottom of the anchor rod 5, the bearing plate 2 is connected with the base plate 4 through the tray 3, a support plate 6 is arranged above the base plate 4, one end of the support plate 6 is movably connected with the anchor rod 5, and the upper surface of the support plate 6 is connected with the lower surface of the anchoring body 8 through a spring.

Under normal conditions, the feeding of anchor head 9, drive stock 5 through anchor body 8 and get into the ground layer, anchor body 8 provides the holding power, and bearing plate 2 passes through tray 3 with backing plate 4 to be connected, has played the effect for whole device's is fixed, and spring 7 is in tensile state. When the stratum structure becomes flexible, changes because unexpected (like oozing water, vibration collapse etc.) appears, spring 7 deformation volume diminishes, provides an ascending pulling force for extension board 6, and extension board 6 tamps the ground layer this moment, provides a buffering and compensation for strutting the inefficacy to for personnel flee the time, the security of device obviously increases. Such a structure is particularly suitable for supporting scenarios where there is a stable rock formation in the upper part and a relatively loose, broken rock formation in the lower part.

Preferably, a first hinge 51 is arranged on the anchor rod 5, a second hinge 61 is arranged on the support plate 6, the first hinge 51 and the second hinge 61 are connected through a screw 10 in a hinged manner, and a hinge nut 11 is arranged on the screw 10. Such structure buffering effect is good, has further promoted the security.

The problem that the escape time is not enough when the stratum structure becomes flexible and changes is solved, and the safety is high.

Example 2

As shown in fig. 1 and fig. 2, as a further optimization of embodiment 1, this embodiment includes all the technical features of embodiment 1, and in addition, includes the following technical features:

preferably, the number of the strips 6 is at least 2, and the sum of the lengths of the 2 strips 6 is larger than the width of the anchor 8. Therefore, the rock-soil layer can be supported in multiple directions and in a large area, and the efficiency is improved.

Preferably, the tray 3 is a truncated cone, and the diameter of the upper surface of the tray 3 is larger than that of the lower surface of the tray 3. The bearing plate 2 and the backing plate 4 are effectively fixed on the anchor rod 5, and the stability of the system is improved.

Preferably, the spring 7 is a composite spring made of a metal coil spring and rubber. The spring has the advantages of large tension, difficult damage and long service life.

Compared with embodiment 1, the present embodiment also has the advantages of higher efficiency, more stable performance, greater supporting force, longer service life, etc.

As described above, the present invention can be preferably realized.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and the technical essence of the present invention is that within the spirit and principle of the present invention, any simple modification, equivalent replacement, and improvement made to the above embodiments are all within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a mining underground supporting device, its characterized in that, includes stock (5), stock (5) top is connected with platelike anchor body (8), and anchor body (8) upper surface is equipped with anchor head (9), wears to be equipped with pole end nut (1), bearing plate (2), tray (3), backing plate (4) from the bottom up on stock (5) in proper order, pole end nut (1) threaded connection is in stock (5) bottom, bearing plate (2) are connected through tray (3) with backing plate (4), backing plate (4) top is equipped with extension board (6), the one end and stock (5) swing joint of extension board (6), the upper surface of extension board (6) passes through spring (7) with the lower surface of anchor body (8) and is connected.

2. The mining underground supporting device according to claim 1, characterized in that a first hinge (51) is arranged on the anchor rod (5), a second hinge (61) is arranged on the support plate (6), the first hinge (51) and the second hinge (61) are connected through a screw rod (10) in a hinged mode, and a hinge nut (11) is arranged on the screw rod (10).

3. A mining downhole support device according to claim 1, characterized in that the number of strips (6) is at least 2, the length of 2 strips (6) being greater than the width of the anchor (8).

4. A mining downhole support device according to claim 1, characterized in that the tray (3) is a truncated cone, the diameter of the upper surface of the tray (3) being larger than the diameter of the lower surface of the tray (3).

5. A mining downhole support device according to claim 1, characterized in that the spring (7) is a composite spring made of metal coil spring and rubber.