An under-mining spreader support

Abstract

The utility model discloses a kind of for under mine development type telescopic support, belong to under mine supporting device technical field;It includes bottom plate;Several outer tubes are installed on bottom plate;In the inner cavity of each outer tube, inner tube that can move along its axial direction is all installed;Inner tube is divided into two groups;One end of two groups of inner tubes respectively protrudes to the different side end of outer tube, and end support seat is installed on the protruding end corresponding to two groups of inner tubes;Telescopic oil cylinder is respectively installed in two groups of inner tubes;Positioning sleeve is provided on the outer tube corresponding to telescopic oil cylinder;One end of telescopic oil cylinder is connected with outer tube through positioning sleeve;Top plate is provided on the upper top of outer tube;Connecting plate is provided between bottom plate and top plate;Positioning hole is opened in the side of bottom plate;The utility model solves the problem that the telescopic support structure used in current mine tunnel is difficult to be reassembled and adjusted on site, and cannot meet the needs of different working environments.

Description

Technical Field

[0001] This utility model relates to the technical field of underground support devices, specifically to an expandable telescopic support for use in underground mines. Background Technology

[0002] Currently, some commonly used telescopic support structures in underground mines often fail to guarantee horizontal support capacity or overall structural stability. This is because their overall dimensions are relatively fixed, and it is difficult to directly reassemble and adjust the supports on-site to adapt to changes in the cross-section of roadways in different working areas. In addition, many supports also suffer from low modularity, making transportation, installation, and disassembly inconvenient. Therefore, it is necessary to design a telescopic support that is easy to expand. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an expandable telescopic support for underground mining, so as to solve the problem that the telescopic support structure currently used in mine tunnels is difficult to reassemble and adjust on site, and cannot meet the needs of different working environments.

[0004] To solve the above problems, this utility model provides the following technical solution:

[0005] An expandable telescopic support for use in mines includes a base plate; several outer tubes arranged along the length of the base plate are installed on the base plate; the length of the outer tubes is greater than the length of the base plate; an inner tube capable of moving along its axis is installed in the inner cavity of each outer tube; the inner tubes are divided into two groups; one end of each group of inner tubes extends to different sides of the outer tubes, and end supports are installed on the corresponding extended ends of the two groups of inner tubes; a telescopic cylinder is installed in each group of inner tubes; a positioning sleeve is provided on the outer tube corresponding to the telescopic cylinder; one end of the telescopic cylinder is connected to the outer tube through the positioning sleeve; a top plate is provided on the top of the outer tubes; a connecting plate is provided between the base plate and the top plate; and positioning holes are opened on the side of the base plate.

[0006] Preferably, the outer tubes are arranged in a row, closely attached to each other; a protrusion is provided on the top of the outer tube; a blind hole that mates with the protrusion is opened on the top plate; the top plate and the outer tubes are detachably connected through the engagement between the protrusion and the blind hole.

[0007] Preferably, two sets of inner tubes are alternately arranged in adjacent outer tubes; wherein the two inner tubes equipped with telescopic cylinders are respectively arranged in the outer tubes at two end positions near the bottom plate.

[0008] Preferably, the number of inner tubes in each of the two sets of inner tubes is the same; the number of outer tubes is twice the number of inner tubes in a single set.

[0009] Preferably, the end support is an L-shaped plate structure; several pairs of stiffening plates are provided at the included angle position on the end support; one end of the inner tube passes through the outer tube and is clamped between two stiffening plates; a coaxial through hole is opened at the position opposite to the end of the stiffening plate and the inner tube, and the stiffening plate and the inner tube are detachably connected at the through hole by a pin.

[0010] Preferably, the connecting plate includes two pairs of Z-shaped folded plates; the two pairs of folded plates are respectively disposed on the two ends of the base plate; the horizontal plate at the bottom of the folded plate is detachably mounted on the base plate, the vertical plate in the middle is attached to the outer wall of the outer tube, and the horizontal plate at the top is detachably mounted on the top plate.

[0011] The beneficial effects of this utility model are reflected in the following aspects:

[0012] 1. Modular design facilitates expansion and adaptability: The core structure of the support, including the outer pipe, inner pipe, end support base, and connecting plate, is detachable. This allows the support to flexibly increase or decrease the number of outer and inner pipe modules on-site according to the actual cross-sectional dimensions and support requirements of the mine tunnel, quickly adjust the overall length and support range of the support, and significantly improve its adaptability to different working environments.

[0013] 2. By alternately setting two sets of inner tubes and extending them to both sides, together with the L-shaped support seats at the ends, the horizontal support span of the support can be effectively increased, enhancing its ability to resist lateral pressure. At the same time, the bottom plate, the closely arranged outer tubes, and the top plate are firmly connected by Z-shaped connecting plates, forming a stable box-shaped frame structure. This greatly improves the overall rigidity and stability of the support, ensuring its reliability in the complex stress environment of the mine.

[0014] 3. The two sets of inner pipes are driven by independent telescopic cylinders, which allows the two sides of the support to be adjusted independently or synchronously as needed. The operation is simple and quick, and can quickly adapt to local changes in the roadway cross section or accurately adjust the support position.

[0015] 4. The end support of the L-shaped knot can provide reliable end-side support, and the stiffening plates greatly enhance the bending and torsional strength of the support, ensuring the stability of the end support.

[0016] 5. This embodiment employs a highly modular and standardized design, making each component easy to disassemble and transport, reducing the difficulty and cost of downhole transportation. The detachable connection also greatly facilitates the on-site installation, disassembly, and subsequent maintenance and replacement of damaged parts of the support. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention in an embodiment;

[0018] Figure 2 yes Figure 1 Left view of the device;

[0019] Figure 3 This is a schematic diagram of the installation of the telescopic cylinder, inner tube, and outer tube in this embodiment;

[0020] Figure 4 This is a schematic diagram of the end support base in this embodiment;

[0021] Figure 5 This is a schematic diagram of a single set of inner tubes installed on the end support in this embodiment;

[0022] Explanation of reference numerals in the attached drawings: 1. Base plate, 2. Outer tube, 3. Inner tube, 4. End support seat, 5. Telescopic cylinder, 6. Positioning sleeve, 7. Top plate, 8. Connecting plate, 9. Protrusion, 10. Rib plate. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0024] Example:

[0025] Reference Figure 1 This embodiment provides an expandable telescopic support for use in mines. It includes a base plate 1; several outer tubes 2 arranged along the length of the base plate 1 are installed on the base plate 1; the length of the outer tubes 2 is greater than the length of the base plate 1; an inner tube 3 capable of moving along its axis is installed in the inner cavity of each outer tube 2; the inner tubes 3 are divided into two groups; one end of each group of inner tubes 3 extends to different sides of the outer tubes 2, and end support seats 4 are installed on the corresponding extended ends of the two groups of inner tubes 3; a telescopic cylinder 5 is installed in each group of inner tubes 3; a positioning sleeve 6 is provided on the outer tube 2 corresponding to the telescopic cylinder 5; one end of the telescopic cylinder 5 is connected to the outer tube 2 through the positioning sleeve 6; a top plate 7 is provided at the top of the outer tube 2; a connecting plate 8 is provided between the base plate 1 and the top plate 7; a positioning hole is opened on the side of the base plate 1. This positioning hole is used to connect and install the telescopic support with other mine equipment. The movements of the telescopic cylinders in the two groups of inner tubes are independent of each other. In this embodiment, both the outer and inner tubes are straight tube structures with a square cross-section.

[0026] The outer tubes 2 are arranged in a row, closely attached to each other. A protrusion 9 is provided on the top of each outer tube 2. A blind hole is provided on the top plate 7 to mate with the protrusion 9. The top plate 7 and the outer tubes 2 are detachably connected through the engagement between the protrusion 9 and the blind hole. This connection method not only facilitates the quick positioning, installation, and disassembly of the top plate, but also ensures that the top plate 7 can effectively constrain the upper ends of each outer tube 2 together.

[0027] Two sets of inner tubes 3 are alternately arranged in adjacent outer tubes 2; the two inner tubes 3 equipped with telescopic cylinders 5 are respectively arranged in the outer tubes 2 at two ends near the base plate 1. This alternate layout design allows the extension action of the two sets of inner tubes 3 to act evenly on both sides of the support, avoiding overall displacement or instability of the support due to telescopic action, while optimizing the force transmission path.

[0028] The number of inner tubes 3 in each of the two sets of inner tubes 3 is the same; the number of outer tubes 2 is twice the number of inner tubes 3 in a single set. This design ensures the symmetry and balance of the support system, providing a basis for the symmetrical expansion of the support system and facilitating the addition or removal of modules in pairs according to the requirements of the roadway width.

[0029] The end support 4 is an L-shaped plate structure; several pairs of stiffening plates 10 are provided at the included angle position on the end support 4; these stiffening plates 10 are welded in pairs at the included angle on the inner side of the L-shaped plate, which greatly enhances the bending and torsional strength and rigidity of the support and prevents it from deforming during use; one end of the inner tube 3 passes through the outer tube 2 and is clamped between two stiffening plates 10; coaxial through holes are opened at the opposite positions of the ends of the stiffening plates 10 and the inner tube 3, and the stiffening plates 10 and the inner tube 3 are detachably connected at the through holes by pins.

[0030] The connecting plate 8 includes two pairs of Z-shaped folded plates; the two pairs of folded plates are respectively disposed on the two ends of the base plate 1; the lower horizontal plate of the folded plate is detachably mounted on the base plate 1, the middle vertical plate is attached to the outer wall of the outer tube 2 to restrict the lateral movement of the outer tube, and the upper horizontal plate is detachably mounted on the top plate 7. In this embodiment, the connecting plate is detachably connected to the base plate and the top plate by bolts. The connecting plate 8 forms a strong triangular connection structure between the base plate 1, the closely arranged outer tubes 2, and the top plate 7, firmly combining the three into a rigid box-shaped frame, significantly improving the overall stability and load-bearing capacity of the support.

[0031] When expansion is required, the number of outer and inner tubes can be increased through a detachable connection structure, and larger end supports can be replaced accordingly, thereby increasing the overall support structure on the base plate.

Claims

1. An expandable telescopic support for use in mines, characterized in that: It includes a base plate (1); several outer tubes (2) arranged along the length of the base plate (1) are installed on the base plate (1); the length of the outer tubes (2) is greater than the length of the base plate (1); an inner tube (3) capable of moving along its axis is installed in the inner cavity of each outer tube (2); the inner tubes (3) are divided into two groups; one end of each group of inner tubes (3) extends to different sides of the outer tubes (2), and end support seats (4) are installed on the corresponding extended ends of the two groups of inner tubes (3); a telescopic cylinder (5) is installed in each of the two groups of inner tubes (3); a positioning sleeve (6) is provided on the outer tube (2) corresponding to the telescopic cylinder (5); one end of the telescopic cylinder (5) is connected to the outer tube (2) through the positioning sleeve (6); a top plate (7) is provided on the top of the outer tube (2); a connecting plate (8) is provided between the base plate (1) and the top plate (7); a positioning hole is opened on the side of the base plate (1).

2. The expandable telescopic support for underground mining as described in claim 1, characterized in that: Each outer tube (2) is arranged in a row, closely attached to each other; a protrusion (9) is provided on the top of the outer tube (2); a blind hole is opened on the top plate (7) to cooperate with the protrusion (9); the top plate (7) and the outer tube (2) are detachably connected through the cooperation between the protrusion (9) and the blind hole.

3. The expandable telescopic support for use in mines according to claim 1, characterized in that: Two sets of inner tubes (3) are alternately arranged in adjacent outer tubes (2); the two inner tubes (3) with telescopic cylinders (5) are respectively arranged in the outer tubes (2) at the two ends of the bottom plate (1).

4. The expandable telescopic support for use in mines according to claim 1, characterized in that: The number of inner tubes (3) included in each of the two sets of inner tubes (3) is the same; the number of outer tubes (2) is twice the number of inner tubes (3) in a single set.

5. The expandable telescopic support for use in mines according to claim 1, characterized in that: The end support (4) is an L-shaped plate structure; several pairs of stiffening plates (10) are provided at the angle position on the end support (4); one end of the inner tube (3) passes through the outer tube (2) and is sandwiched between two stiffening plates (10); a coaxial through hole is opened at the position opposite to the end of the stiffening plate (10) and the inner tube (3), and the stiffening plate (10) and the inner tube (3) are detachably connected at the through hole by a pin.

6. The expandable telescopic support for use in mines according to claim 1, characterized in that: The connecting plate (8) includes two pairs of Z-shaped folding plates; the two pairs of folding plates are respectively set on the two ends of the bottom plate (1); the lower horizontal plate end of the folding plate is detachably installed on the bottom plate (1), the middle vertical plate is attached to the outer side wall of the outer tube (2), and the upper horizontal plate is detachably installed on the top plate (7).

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