Soft rock roadway integral digging and protecting support

Abstract

The invention relates to the field of mining machinery, and particularly discloses an integral digging and protecting support for a soft rock roadway. The side supporting columns, the telescopic arc top supporting plates and the locking assemblies are arranged on the telescopic bases, when the telescopic bases are unfolded for roadway supporting work, the telescopic bases stretching towards the two sides can drive the telescopic arc top supporting plates to be unfolded through the side supporting columns and the three-section type supporting telescopic rods, and in the unfolding process of the telescopic arc top supporting plates, the telescopic arc top supporting plates can be locked. A user can start the locking assembly by controlling telescopic actions of different telescopic ends of the three-section type supporting telescopic rod, the telescopic arc top supporting plate which is completely unfolded is locked through the locking assembly, the situation that the unfolded telescopic arc top supporting plate retracts under pressure of the side wall of a roadway is avoided, and the stability and safety of the support can be effectively improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mine machinery, and particularly relates to a soft rock roadway whole excavation support. BACKGROUND

[0002] In recent years, modern mine deep comprehensive mechanized mining faces increasingly complex geological conditions, and the increase of mining depth leads to a significant increase in deep rock stratum ground stress. Especially in soft rock roadways of coal mines, the surrounding rock deforms dramatically, is prone to excessive relaxation instability under pressure, and produces excessive plastic deformation or loose damage under the action of secondary stress, which causes roof falling, rib spalling, floor heaving and other accidents, seriously threatening personnel safety and causing property losses. In order to ensure safety and production, the soft rock roadway must be supported. However, the current commonly used support methods such as anchor shotcrete, I-beam shed and U-shaped steel have obvious shortcomings: low compressive strength, poor safety performance, difficult to effectively resist the lateral and floor heave pressure of surrounding rock, and prone to safety accidents; at the same time, the construction process is complex, often leading to roadway "pre-digging and post-repair", which requires repeated repair, resulting in a dramatic increase in maintenance engineering quantity, difficulty in recycling of support materials, rising support cost and low efficiency, and it is urgent to develop support technology more suitable for high ground stress soft rock environment to improve the safety and economy of surrounding rock control.

[0003] In the Chinese patent with publication number CN103104267B, a soft rock roadway whole excavation support is mentioned, which belongs to the field of mine machinery manufacturing and application. It is mainly composed of a semicircular protective arch, two left and right hydraulic support columns (1) and a support base. The upper ends of the two hydraulic support columns (1) are connected to the semicircular protective arch through support lugs (5) and connecting pins, and the lower ends are fixed on the column fixed seats (6) on both sides of the support base. The support base is connected by two groups of parallel telescopic guide rails (7) between the two column fixed seats (6). A push oil cylinder fixed seat (8) and two side push oil cylinders (9) facing opposite directions are arranged at the middle of the two groups of parallel telescopic guide rails (7). The invention has the characteristics of being able to withstand pressure from all four directions, high compressive strength, large supporting force, easy operation and close combination of parts. It improves the safety, adaptability, technical advancement and economy of soft rock support engineering through design optimization, convenient roadway construction and structural innovation.

[0004] The applicant found during the application process that the support disclosed in the above application has defects in use. The arc-shaped top guard plate and the arc-shaped support arch plate are connected to each other through connecting ears or hinges. The top structure of the support needs to be completely unfolded during work. At this time, if the roadway is narrow, the arc-shaped top guard plate and the arc-shaped support arch plate cannot be completely unfolded, which causes the top of the support to fail to fit the top of the roadway, so the structure between the arc-shaped top guard plate and the arc-shaped support arch plate can be changed into a sliding connection structure. However, the sliding connection structure has the defect of lacking a limiting structure. The completely unfolded arc-shaped top structure of the support will slide back after being pressed by the sidewall of the roadway, which has a safety hazard. Therefore, the structure of the existing soft rock roadway support needs to be improved. SUMMARY

[0005] In order to overcome the defects of the prior art, the purpose of the present application is to provide a soft rock roadway whole tunneling and supporting support to solve the problem of defects in the arc top structure of the existing soft rock roadway support.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The soft rock roadway whole tunneling and supporting support comprises:

[0008] A telescopic base;

[0009] A side support column connected to the telescopic base;

[0010] A telescopic arc top support plate arranged above the side support column, comprising a first arc top support plate connected to the side support column and a second arc top support plate slidingly connected to the end of the first arc top support plate, the ends of the two second arc top support plates are hinged to each other, and a three-section support telescopic rod is connected between the first arc top support plate and the telescopic base;

[0011] A locking assembly arranged between the three-section support telescopic rod and the telescopic arc top support plate, comprising an inner hole opened in the first arc top support plate, an outer hole opened in the second arc top support plate, and a rotating plate arranged in the inner hole, one end of the rotating plate is hinged to the first arc top support plate, a clamping groove is opened in the other end of the rotating plate, a sliding rail is slidingly connected to the second arc top support plate, a sliding block is slidingly connected to the sliding rail, a clamping rod is connected to the sliding block, a support rod is connected to the sliding block, and an installation ring connected to the second telescopic section of the three-section support telescopic rod is hinged to the end of the support rod.

[0012] Preferably, one end of the rotating plate with the clamping groove extends to below the second arc top support plate through the overlapping inner hole and outer hole under the action of gravity, and the clamping rod is slidingly clamped in the clamping groove.

[0013] Preferably, the telescopic base comprises two bottom mounts and two base telescopic rods fixed between the bottom mounts, and a three-section base telescopic rod connected between the two bottom mounts.

[0014] Preferably, the bottom mount is provided with a through hole and a T-shaped connecting groove.

[0015] Preferably, the side support column is slidingly inserted into the end of the first arc top support plate.

[0016] Preferably, the second arc top support plate is provided with a pressure detector.

[0017] Preferably, the clamping groove is in a C-shaped arrangement.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] The present application sets the side support column, telescopic arc top support plate and locking assembly on the telescopic base. When the telescopic base is expanded for roadway support work, the telescopic base expanded to both sides can drive the telescopic arc top support plate to expand through the side support column and three-section support telescopic rod. During the expansion of the telescopic arc top support plate, the user can start the locking assembly by controlling the telescopic action of different telescopic ends of the three-section support telescopic rod. The fully expanded telescopic arc top support plate is locked by the locking assembly to avoid the telescopic arc top support plate from retracting under the pressure of the roadway side wall. The use stability and safety of the support can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The overall structure of the present application is shown Figure 1 ;

[0021] Figure 2 The overall structure of the present application is shown Figure 2 ;

[0022] Figure 3 The A part of the present application is shown Figure 2 ;

[0023] Figure 4 The cross-sectional structure of the telescopic arc top support plate of the present application is shown

[0024] Figure 5 The structure of the rotating plate and clamping rod of the present application is shown

[0025] In the figure: 1, bottom mounting seat; 2, base telescopic rod; 3, three-section base telescopic rod; 4, side support column; 5, first arc top support plate; 6, second arc top support plate; 7, three-section support telescopic rod; 8, inner hole; 9, outer hole; 10, rotating plate; 11, clamping groove; 12, sliding rail; 13, sliding block; 14, clamping rod; 15, support rod; 16, mounting ring; 17, perforation; 18, pressure detector; 19, connecting groove. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Embodiment one:

[0028] Please refer to Figure 1 - Figure 5 As shown in the figure, the soft rock roadway overall tunneling support frame comprises:

[0029] The telescopic base can be extended to support and abut on the inner side wall of the soft rock roadway, and comprises two bottom mounting seats 1 and two base telescopic rods 2 fixedly mounted between the bottom mounting seats 1, and a three-section base telescopic rod 3 connected between the two bottom mounting seats 1;

[0030] The side support column 4 is connected to the bottom mounting seat 1;

[0031] The telescopic arc top support plate is arranged above the side support column 4 and comprises a first arc top support plate 5 connected to the side support column 4 and a second arc top support plate 6 slidingly connected to the end of the first arc top support plate 5, wherein the upper end of the side support column 4 is slidingly inserted into the end of the first arc top support plate 5, and the end can be fixedly connected by a bolt, so that the end of the side support column 4 cannot slide in the first arc top support plate 5, and the ends of the two second arc top support plates 6 are hingedly connected to each other, and the three-section support telescopic rod 7 is connected between the first arc top support plate 5 and the bottom mounting seat 1;

[0032] The locking assembly is arranged between the three-section support telescopic rod 7 and the telescopic arc top support plate, and comprises an inner hole 8 arranged on the first arc top support plate 5, an outer hole 9 arranged on the second arc top support plate 6, and a rotating plate 10 arranged in the inner hole 8. One end of the rotating plate 10 is hinged to the first arc top support plate 5, and a clamping groove 11 is arranged on the other end of the rotating plate 10. The clamping groove 11 is arranged in a C shape. A sliding rail 12 is slidably connected to the second arc top support plate 6. A sliding block 13 is slidably connected to the sliding rail 12. A clamping rod 14 is connected to the sliding block 13. A support rod 15 is connected to the sliding block 13. An installation ring 16 is hinged to the end of the support rod 15 and connected to the second telescopic section of the three-section support telescopic rod 7.

[0033] As can be seen from the above, by arranging the side support column 4, the telescopic arc top support plate and the locking assembly on the telescopic base, when the telescopic base is expanded for roadway support work, the telescopic base expanded to both sides can drive the telescopic arc top support plate to expand through the side support column 4 and the three-section support telescopic rod 7. During the expansion of the telescopic arc top support plate, the user can start the locking assembly by controlling the telescopic action of different telescopic ends of the three-section support telescopic rod 7, and lock the fully expanded telescopic arc top support plate through the locking assembly to avoid the telescopic arc top support plate from retracting under the pressure of the roadway side wall, which can effectively improve the stability and safety of the support,

[0034] When the stent is expanded to support, first control the three-section base telescopic rod 3 to extend, the three-section base telescopic rod 3 that extends will drive base telescopic rod 2 to extend, two bottom mounting seat 1 is moved to both sides until it is contacted with the roadway inner wall, the bottom mounting seat 1 that moves will drive first arc top support plate 5 to move to the side through side support column 4, first arc top support plate 5 and second arc top support plate 6 will slide open between when inner hole 8 and outer hole 9 overlap, the bottom of rotating plate 10 loses the support of second arc top support plate 6, one end of rotating plate 10 with the clamping groove 11 under the action of gravity extends to the second arc top support plate 6 below via the inner hole 8 and outer hole 9 that overlap, because one end of support rod 15 is connected with mounting ring 16, support rod 15 will rotate with the hinge shaft of mounting ring 16 as the pivot, the support rod 15 that rotates will drive sliding block 13 to slide on slide rail 12, and simultaneously the user can extend the upper section and intermediate section of three-section support telescopic rod 7, so that the clamping rod 14 is slidably clamped in the clamping groove 11, after the clamping rod 14 falls into the clamping groove 11, it will abut against the inner wall top of clamping groove 11, at this time, shorten the upper section and intermediate section of three-section support telescopic rod 7, because of the gravity of rotating plate 10, the clamping rod 14 will slide in the clamping groove 11 until the clamping rod 14 is clamped at the top end of the clamping groove 11, at this time, the clamping rod 14 will limit the rotation of the rotating plate 10, because the rotating plate 10 is clamped in the inner hole 8 and outer hole 9, when the width of rotating plate 10 is enough, the end and side of rotating plate 10 will abut against the inner wall of inner hole 8 and outer hole 9 at the same time, which can effectively avoid the second arc top support plate 6 from retracting into the first arc top support plate 5, then raise the lower section of three-section support telescopic rod 7, and the expanded telescopic arc top support plate can be lifted up to support the inner wall top of the roadway.

[0035] When the user needs to loosen the support device, the lower section of three-section support telescopic rod 7 can be shortened first, so that the support rod 15 rotates, and the clamping rod 14 is slid to the middle of the clamping groove 11 by the rotating support rod 15, then the bottom mounting seat 1 is moved by the shortening of the three-section base telescopic rod 3, the first arc top support plate 5 is moved by the bottom mounting seat 1 through the side support column 4 and the three-section support telescopic rod 7, so that the first arc top support plate 5 drives the retracted second arc top support plate 6, at this time, the inner hole 8 and the outer hole 9 are gradually misaligned, and the second arc top support plate 6 abuts against the bottom of the rotating plate 10 to lift the rotating plate 10 up, so that the rotating plate 10 rotates back into the inner hole 8, at this time, the clamping rod 14 that slides with the sliding block 13 will not be clamped in the clamping groove 11, the user can adjust the rotation of the support rod 15 by the telescopic change of the three-section base telescopic rod 3 and the three-section support telescopic rod 7, until the entire device is completely stored.

[0036] Please refer to Figure 1 - Figure 2As shown, the bottom mounting base 1 is provided with a through hole 17 for draining water accumulated in the roadway, and the bottom mounting base 1 is provided with a T-shaped connecting groove 19, when two supports are spliced together, a user can use a dumbbell-shaped connecting block to be clamped in the connecting groove 19 of the adjacent support, so as to stably splice the two adjacent supports together.

[0037] The second arc top supporting plate 6 is connected with a pressure detector 18 for detecting the pressure of the roadway top on the support.

[0038] The standard parts used in the present application can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the mechanical parts and equipment adopt the conventional types in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here. The contents not described in detail in the present application are all the prior art known to those skilled in the art.

[0039] In the description of the present application, the terms "first", "second" are only used for description purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more of the features. The meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0040] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0042] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0043] In the drawings of the embodiments of the present application, only the structures related to the embodiments of the present application are involved, and other structures can refer to the general design. In the case of no conflict, the same embodiment and different embodiments of the present application can be combined with each other.

Claims

1. A soft rock roadway overall excavation support shield, characterized in that, The utility model relates to a telescopic base, side support column (4) is connected on the telescopic base, telescopic arc top support plate is arranged above the side support column (4), including the first arc top support plate (5) that is connected on the side support column (4) and the second arc top support plate (6) that is slidably connected in the end of first arc top support plate (5), two second arc top support plate (6) end each other hinged, first arc top support plate (5) with telescopic base between connection has three -section type support telescopic rod (7), locking assembly is arranged between three -section type support telescopic rod (7) and telescopic arc top support plate, including the inner hole (8) that is opened on first arc top support plate (5), the outer hole (9) that is opened on second arc top support plate (6) and the turn plate (10) that is arranged in inner hole (8), one end of turn plate (10) is hinged with first arc top support plate (5), the clamping slot (11) is opened on the other end of turn plate (10), the slide rail (12) is slidably connected on second arc top support plate (6), the slide block (13) is slidably connected on slide rail (12), the clamping rod (14) is connected on slide block (13), the support rod (15) is connected on slide block (13), the mounting ring (16) that is connected on the second telescopic section of three -section type support telescopic rod (7) is hinged in the end of support rod (15). One end of turn plate (10) with clamping slot (11) is under the action of gravity via the inner hole (8) and outer hole (9) that overlap and stretches to the below of second arc top support plate (6), and clamping rod (14) is slidably connected in clamping slot (11). Telescopic base includes two bottom mounting seat (1) and two fixed mounting base telescopic rod (2) between bottom mounting seat (1), three -section type base telescopic rod (3) is connected between two bottom mounting seat (1), and bottom mounting seat (1) is connected with side support column (4) and three -section type support telescopic rod (7) respectively. Perforated hole (17) is opened on bottom mounting seat (1), and connecting groove (19) in T shape is opened on bottom mounting seat (1). The upper end of side support column (4) is slidably inserted in the end of first arc top support plate (5).

2. The soft rock whole roof support of claim 1, wherein: Pressure detector (18) is connected on second arc top support plate (6).

3. The soft rock whole roof support of claim 1, wherein: Clamping slot (11) is in C shape.

4. The soft rock whole roof support of claim 3, wherein: ​ 5. The soft rock whole roof bolting support of claim 1, wherein: ​ 6. The soft rock whole roof bolting support of claim 1, wherein: ​ 7. The soft rock whole roof bolting support of claim 1, wherein: ​

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