Supporting column for roadway supporting and supporting system

Abstract

The utility model relates to the technical field of roadway supporting, in particular to a supporting column for roadway supporting and a supporting system. Comprising a base, a supporting guide column is fixed to the base and comprises a first annular part and a second annular part, the outer diameter of the second annular part is smaller than that of the first annular part, the second annular part is sleeved with a first sleeve, the first sleeve is sleeved with a second sleeve, and the inner diameter of the second sleeve is smaller than the outer diameter of the first annular part; the up-down position of the second sleeve relative to the first sleeve is adjustable, an adjusting mechanism is arranged in the supporting guide column and used for driving the first sleeve and the second sleeve to move up and down, and a top base is fixed to the upper end of the second sleeve. The vertical height of the supporting column is changed by adjusting the vertical position of the second sleeve relative to the first sleeve, then the first sleeve and the second sleeve move upwards through the adjusting mechanism to support an underground roadway, the supporting column can be detached after being used, and repeated utilization of the supporting column is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of roadway support, in particular to a prop and a support system for roadway support. Background Art

[0002] Roof fall and rib spalling refer to accidents in which, during the excavation and lining of mines, tunnels, and culverts, due to improper excavation, inspection, treatment of loose rocks, or support, when the surrounding rock of the roadway roof or sidewall is subjected to blasting vibration, external force disturbance, ground pressure change, or surrounding rock stress release, rock blocks suddenly collapse and fall, causing harm to operating personnel. The collapse phenomenon on the working face and the sidewall of the roadway is called rib spalling, and the collapse of the roof is called roof fall. In mining operations, the most common accident is roof fall and rib spalling, accounting for more than 40% of mining operation accidents.

[0003] Currently, the measures (or support methods) for dealing with the safety accident of "roof fall and rib spalling" in underground roadways mainly include integral concrete pouring support for roadways, steel arch support, bolt-net-shotcrete support, plain concrete spraying support, etc. The above support methods can basically effectively prevent "roof fall and rib spalling", but they also have the disadvantages of cumbersome procedures, long construction periods, high labor intensity of workers, high costs, and inability or difficulty in being reused. Especially the widely used I-beam trapezoidal rigid support, because the rigid support cannot adapt to the deformation and movement of the surrounding rock and is unable to prevent the deformation of the surrounding rock, it is difficult to avoid the deformation and damage caused by overloading support.

[0004] When supporting underground roadways at present, a large number of round logs are used for support. However, this support method has obvious disadvantages. Firstly, the cost of using round logs is high, and there is no possibility of reuse, increasing the mining cost. Moreover, the stability is insufficient when a large number of round logs are used, and it does not conform to the national environmental protection concept. Summary of the Invention

[0005] In order to solve the problem that the existing underground roadway support structure cannot be reused and increases the mining cost, the utility model provides a prop for roadway support. By adjusting the up-and-down position of the second sleeve relative to the first sleeve, the up-and-down height of the prop can be changed. Then, through the adjusting mechanism, the first sleeve and the second sleeve move upward to support the underground roadway. After use, it can be removed, realizing the reuse of the prop and reducing the support cost of the roadway.

[0006] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A prop for roadway support includes a base, on which a support guide post is fixed. The support guide post includes a first annular part and a second annular part. The outer diameter of the second annular part is smaller than that of the first annular part. The first annular part and the second annular part are smoothly connected. A first sleeve is sleeved on the outside of the second annular part, and a second sleeve is sleeved on the outside of the first sleeve. The inner diameter of the second sleeve is smaller than the outer diameter of the first annular part. The vertical position of the second sleeve relative to the first sleeve is adjustable. An adjusting mechanism is arranged inside the support guide post, and the adjusting mechanism is used to drive the first sleeve and the second sleeve to move up and down. A top seat is fixed at the upper end of the second sleeve. The axes of the first annular part and the second annular part coincide, and the support guide post is vertically arranged.

[0008] Further, a first through hole is formed in the first sleeve, and a plurality of second through holes matching the first through hole are formed in the second sleeve. A pin is inserted through the first through hole and one of the second through holes to realize the connection and fixation of the first sleeve and the second sleeve. By changing the second through hole matching the first through hole on the second sleeve, the vertical position adjustment of the second sleeve on the first sleeve is realized.

[0009] Further, the adjusting mechanism includes a rotating rod and a lead screw that are perpendicular to each other. One end of the rotating rod extends into the first annular part and a first bevel gear is fixed at its end. The rotating rod is rotatably connected to the first annular part. The lead screw is rotatably connected to the base, and a second bevel gear is fixed on the lead screw. The first bevel gear meshes with the second bevel gear. A third sleeve is sleeved on the lead screw. The third sleeve is threadedly connected to the lead screw. The upper end of the third sleeve extends out of the support guide post and a connecting part is fixed at its end. The connecting part is fixed to the first sleeve. A limiting mechanism is arranged on the third sleeve, and the limiting mechanism is used to limit the rotation of the third sleeve. The rotating rod is horizontally arranged and the lead screw is vertically arranged. When the rotating rod is rotated, the first bevel gear drives the second bevel gear to rotate, and then drives the lead screw rotatably connected to the base to rotate. At this time, the third sleeve threadedly connected to the lead screw will move upward under the limitation of the limiting mechanism and lift the connecting part, so as to realize the up and down movement of the first sleeve and the second sleeve.

[0010] Further, the limiting mechanism includes a vertical through groove formed on the outer side wall of the third sleeve, and a limiting block is slidably connected in the through groove. The limiting block is fixed to the second annular part. The limiting block and the second annular part are fixed by a limiting bolt.

[0011] Further, a turntable is fixed on the rotating rod, and the turntable is located outside the first annular part.

[0012] Further, a fixed disk is fixed on the base, and the first annular part is sleeved outside the fixed disk and threadedly connected to the fixed disk. The detachable connection between the support guide post and the base is realized, which is convenient for subsequent transportation.

[0013] Furthermore, a first placement groove is opened in the middle of the fixed disk, the end of the screw rod is inserted into the first placement groove and is rotatably connected to the fixed disk, and an annular second placement groove is opened on the fixed disk, the second placement groove is located on the outside of the first placement groove, and a bearing is placed in the second placement groove, and the upper surface of the bearing is fixed to the lower surface of the second bevel gear.

[0014] A support system comprises a plurality of the pillars for supporting shafts and tunnels.

[0015] Furthermore, a plurality of the shaft and lane support pillars are arranged in sequence along the extension direction of the shaft and lane, and each shaft and lane support pillar matches the height of the corresponding support position of the lane, so as to cope with the complex underground environment, adapt to the height changes of different positions, and improve the stability of underground lane support.

[0016] Through the above technical solution, the beneficial effects of the utility model are:

[0017] 1. In the pillars for supporting shafts and tunnels, second through holes at different positions are selected on the second sleeve to match the first through holes, and then the pins are inserted into the first through holes and the selected second through holes to adjust the upper and lower positions of the second sleeve relative to the first sleeve, thereby changing the upper and lower heights of the pillars, and then the first bevel gear fixed at the end of the rotating rod drives the second bevel gear to rotate, thereby driving the screw rod rotatably connected to the base to rotate, and at this time, the third sleeve threadedly connected to the screw rod will move upward and lift the connection part under the limit of the limit mechanism, thereby realizing the upward movement of the first sleeve and the second sleeve to support the underground tunnel. After use, it can be removed to achieve the reuse of the pillars and reduce the support cost of the tunnel.

[0018] 2. The support system includes multiple shaft and tunnel support pillars, which are arranged in sequence along the extension direction of the shaft and tunnel, and can adapt to different height changes in the tunnel and improve the stability of the underground tunnel support. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a pillar for supporting a shaft and tunnel according to the utility model;

[0020] Figure 2 This is a structural cross-sectional view of the AA portion of a shaft and tunnel supporting support pillar of the utility model;

[0021] Figure 3 The utility model is a kind of shaft and tunnel support support Figure 2 A magnified view of the structure at A in FIG.

[0022] Figure 4 The utility model is a kind of shaft and tunnel support support Figure 2 A magnified view of the structure at B in FIG.

[0023] Figure 5 Schematic structural diagram of the lead screw of a prop for roadway support of the present utility model;

[0024] Figure 6 Top view of the third sleeve of a prop for roadway support of the present utility model;

[0025] Figure 7 Schematic structural diagram of the support guide post and the third sleeve of a prop for roadway support of the present utility model;

[0026] Figure 8 Schematic structure of the support system of the present utility model Figure 1 ;

[0027] Figure 9 Schematic structure of the support system of the present utility model Figure 2 .

[0028] Reference numerals in the drawings: 1 is the base, 3 is the first sleeve, 4 is the second sleeve, 5 is the top seat, 7 is the second through hole, 8 is the bolt pin, 9 is the first annular part, 10 is the second annular part, 11 is the rotating rod, 12 is the lead screw, 13 is the first bevel gear, 14 is the second bevel gear, 15 is the third sleeve, 16 is the connecting part, 17 is the through groove, 18 is the limit block, 19 is the turntable, 20 is the fixed disk, 21 is the first placement groove, 22 is the second placement groove, 23 is the bearing, 24 is the limit bolt. Detailed implementation manners

[0029] The present utility model will be further described below with reference to the drawings and detailed implementation manners:

[0030] As Figures 1 to 7 shown, this embodiment provides a prop for roadway support, including a base 1, a support guide post is fixed on the base 1, the support guide post includes a first annular part 9 and a second annular part 10, the outer diameter of the second annular part 10 is smaller than the outer diameter of the first annular part 9, and the first annular part 9 and the second annular part 10 are smoothly connected; in this embodiment, the axes of the first annular part 9 and the second annular part 10 coincide and both are vertically arranged; a fixed disk 20 is fixed on the base 1, and the first annular part 9 is sleeved outside the fixed disk 20 and is threadedly connected with the fixed disk 20, so as to realize the detachable connection between the support guide post and the base 1, which is convenient for subsequent transportation.

[0031] Further, a first sleeve 3 is sleeved outside the second annular part 10, a second sleeve 4 is sleeved outside the first sleeve 3, the inner diameter of the second sleeve 4 is smaller than the outer diameter of the first annular part 9, and the vertical position of the second sleeve 4 relative to the first sleeve 3 is adjustable.

[0032] Specifically, as Figure 2As shown, a first through hole is provided on the first sleeve 3, and a plurality of second through holes 7 matching the first through hole are provided on the second sleeve 4. A pin 8 is inserted through the first through hole and one of the second through holes 7 to connect and fix the first sleeve 3 and the second sleeve 4. By changing the second through hole 7 on the second sleeve 4 that matches the first through hole, and then inserting the pin 8 into the second through hole 7 and the first through hole, the vertical position adjustment of the second sleeve 4 on the first sleeve 3 is realized, thereby changing the overall height of the support column to adapt to the height change of the roadway.

[0033] Furthermore, an adjustment mechanism is provided inside the support guide post, and the adjustment mechanism is used to drive the first sleeve 3 and the second sleeve 4 to move up and down.

[0034] Specifically, as Figure 2 shown in Figure 3 the figure, the adjustment mechanism includes a rotating rod 11 and a lead screw 12 that are perpendicular to each other. One end of the rotating rod 11 extends into the first annular portion 9 and a first bevel gear 13 is fixed at its end. The rotating rod 11 is rotatably connected to the first annular portion 9. The lead screw 12 is rotatably connected to the base 1, and a second bevel gear 14 is fixed on the lead screw 12. The first bevel gear 13 meshes with the second bevel gear 14. A third sleeve 15 is sleeved on the lead screw 12, and the third sleeve 15 is threadedly connected to the lead screw 12. The upper end of the third sleeve 15 extends out of the support guide post 2 and a connecting portion 16 is fixed at its end. The connecting portion 16 is fixedly connected to the first sleeve 3.

[0035] In this embodiment, the rotating rod 11 is horizontally arranged and the lead screw 12 is vertically arranged. A turntable 19 is fixed on the rotating rod 11, and the turntable 19 is located outside the first annular portion 9. Rotating the turntable 19 drives the rotating rod 11 and the first bevel gear 13 to rotate, thereby driving the second bevel gear 14 and the lead screw 12 to rotate. At this time, the third sleeve 15 that is threadedly connected to the lead screw 12 is provided with a limiting mechanism, and the limiting mechanism is used to limit the rotation of the third sleeve 15, so as to realize the jacking of the disc-shaped connecting portion 16 by the third sleeve 15 driven by the lead screw 12, thereby realizing the up and down movement of the first sleeve 3 and the second sleeve 4.

[0036] Specifically, the limiting mechanism includes a vertical through groove 17 opened on the outer side wall of the third sleeve 15, and a limiting block 18 is slidably connected in the through groove 17. The limiting block 18 is fixedly connected to the second annular portion 9. In this embodiment, the limiting block 18 and the second annular portion 10 are fixedly connected by a limiting bolt 24.

[0037] Furthermore, a top seat 5 is fixed at the upper end of the second sleeve 4. Driven by the second sleeve 4, the top seat 5 tightens the roadway to realize the support of this position of the roadway.

[0038] As an implementable mode, a first placement groove 21 is formed in the middle of the fixed disk 20. The end of the lead screw 12 is inserted into the first placement groove 21 and rotatably connected to the fixed disk 20. An annular second placement groove 22 is formed in the fixed disk 20. The second placement groove 22 is located outside the first placement groove 21. A bearing 23 is placed in the second placement groove 22, and the upper surface of the bearing 23 is fixed to the lower surface of the second bevel gear 14. This realizes the stable rotation of the lead screw 12 in the fixed disk 20.

[0039] When using this support to support a position in a roadway, first select a second through hole 7 with a suitable height on the second sleeve 4 that matches the first through hole, and then insert the pin 8 into the second through hole 7 and the first through hole in sequence. At this time, the height between the top seat 5 at the top of the support and the side wall of the roadway should not be less than the maximum height that the adjustment mechanism can adjust;

[0040] Then rotate the turntable 19 to drive the rotating rod 11 and the first bevel gear 13 to rotate, thereby driving the rotation of the second bevel gear 14 and the lead screw 12. At this time, the third sleeve 15 threadedly connected to the lead screw 12 moves upward under the limitation of the limiting mechanism to jack up the connecting portion 16, thereby realizing the upward movement of the first sleeve 3 and the second sleeve 4, and further realizing the top seat 5 pressing tightly against the side wall of the roadway, completing the support of a position in the roadway.

[0041] Support system, such as Figure 8 and Figure 9 As shown, it includes a plurality of the above-mentioned supports for roadway support; the plurality of supports for roadway support are arranged in sequence along the extending direction of the roadway of the mine roadway, and the height of each support for roadway support matches the height of the corresponding support position of the roadway.

[0042] At multiple positions in the roadway that need to be supported, adjust the supports to appropriate heights to adapt to the heights of various positions in the roadway. The multiple supports cooperate to cope with the complex underground environment, adapt to the height changes at different positions, and improve the stability and safety of the underground roadway support.

[0043] In this embodiment, as Figure 9 shown, the heights of various positions in the roadway are different, and it is necessary to select supports with appropriate heights to support multiple positions in the roadway to ensure the safety of the underground roadway support.

[0044] The above-mentioned embodiments are only the preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features, and principles described in the scope of the present invention patent should be included in the scope of the patent application of the present invention.

Claims

1. A support pillar for shaft and tunnel support, comprising a base (1), characterized in that: A support guide column is fixed on the base (1), the support guide column comprising a first annular portion (9) and a second annular portion (10), the outer diameter of the second annular portion (10) being smaller than the outer diameter of the first annular portion (9), and the first annular portion (9) and the second annular portion (10) being smoothly connected; A first sleeve (3) is sleeved on the outer side of the second annular portion (10), and a second sleeve (4) is sleeved on the outer side of the first sleeve (3); the inner diameter of the second sleeve (4) is smaller than the outer diameter of the first annular portion (9), and the upper and lower positions of the second sleeve (4) relative to the first sleeve (3) are adjustable; An adjustment mechanism is provided inside the support guide column, and the adjustment mechanism is used to drive the first sleeve (3) and the second sleeve (4) to move up and down; A top seat (5) is fixed to the upper end of the second sleeve (4).

2. A shaft support pillar according to claim 1, characterized in that: The first sleeve (3) is provided with a first through hole, the second sleeve (4) is provided with a plurality of second through holes (7) matching the first through hole, and a latch (8) is inserted through the first through hole and one of the second through holes (7) to achieve connection and fixation between the first sleeve (3) and the second sleeve (4).

3. A shaft support pillar according to claim 1, characterized in that: The adjustment mechanism comprises a rotating rod (11) and a screw rod (12) which are perpendicular to each other, one end of the rotating rod (11) extends into the first annular portion (9) and a first bevel gear (13) is fixed to the end of the rotating rod (11), the rotating rod (11) is rotatably connected to the first annular portion (9), the screw rod (12) is rotatably connected to the base (1), a second bevel gear (14) is fixed to the screw rod (12), and the first bevel gear (13) is meshed with the second bevel gear (14); The screw rod (12) is sleeved with a third sleeve (15), the third sleeve (15) is threadedly connected to the screw rod (12), the upper end of the third sleeve (15) extends out of the support guide column and a connecting portion (16) is fixed to the end thereof, and the connecting portion (16) is fixedly connected to the first sleeve (3); The third sleeve (15) is provided with a limiting mechanism, which is used to limit the rotation of the third sleeve (15).

4. A shaft support pillar according to claim 3, characterized in that: The limiting mechanism comprises a vertical through groove (17) formed on the outer wall of the third sleeve (15), a limiting block (18) being slidably connected in the through groove (17), and the limiting block (18) being fixedly connected to the second annular portion (10).

5. A shaft support pillar according to claim 3, characterized in that: A rotating disk (19) is fixed on the rotating rod (11), and the rotating disk (19) is located outside the first annular portion (9).

6. A shaft and tunnel support pillar according to claim 3, characterized in that: A fixing plate (20) is fixed on the base (1), and the first annular portion (9) is sleeved on the outside of the fixing plate (20) and is threadedly connected to the fixing plate (20).

7. A shaft support pillar according to claim 6, characterized in that: A first placement groove (21) is provided in the middle of the fixed disk (20), an end of the screw rod (12) is inserted into the first placement groove (21) and is rotatably connected to the fixed disk (20), an annular second placement groove (22) is provided on the fixed disk (20), the second placement groove (22) is located outside the first placement groove (21), a bearing (23) is placed in the second placement groove (22), and the upper surface of the bearing (23) is fixed to the lower surface of the second bevel gear (14).

8. A support system, characterized in that: A shaft and tunnel supporting support comprising a plurality of pillars as described in any one of claims 1-7.

9. The support system according to claim 8, characterized in that: The plurality of shaft and tunnel support pillars are arranged in sequence along the extension direction of the shaft and tunnel, and the height of each shaft and tunnel support pillar matches the corresponding support position of the tunnel.

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