Supporting bracket for tunnel withdrawing triangular area

Abstract

The utility model discloses a roadway withdrawing triangular area supporting support which comprises a first hydraulic support, a second hydraulic support, a connecting assembly and an adjusting assembly, and the first hydraulic support comprises a first base, a first supporting mechanism and a first top beam; the second hydraulic support comprises a second base, a second supporting mechanism and a second top beam, the connecting assembly comprises a propelling part, the two ends of the propelling part are connected with the first base and the second base respectively, the adjusting assembly comprises a first adjusting jack and a second adjusting jack, and the first adjusting jack is arranged on one side of the second base. The second adjusting jack is arranged on one side of the first top beam. The base of the rollback support is pushed through the first adjusting jack, the top beam of the rollback support is pushed through the second adjusting jack, and therefore movement of the rollback support or position adjustment of the device is completed, and the problems that the supporting space of a triangular area is limited, and part of supporting supports are difficult to erect are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine support, in particular to a tunnel retreat triangle area support bracket. Background Art

[0002] During the relocation or recovery of comprehensive mining equipment, the safe and smooth removal of the hydraulic support is the key to whether the entire project can proceed smoothly, and the maintenance of the roof of the support triangle is the focus of the hydraulic support removal work. Therefore, improving the support method of the support triangle is of great significance to the smooth progress of the relocation or recovery project. In the existing technology, for example, the Chinese invention patent with publication number CN111365052A discloses a new type of triangle support device, which specifically discloses a first support unit and a second support unit. The first support unit includes a vertically arranged first vertical telescopic member, a first top support member, a first base member, a first side support member, a first connecting rod and a third side support member, and the second support unit includes a second vertical telescopic member, a second top support member, a second base member, a second side support member, a second connecting rod and a fourth side support member. The device described in the utility model is provided with a supporting method that combines a top support member and a side support member to increase the supporting strength; a third support member and a fourth support member are used to support the side of the coal mine, which is safer; a telescopic plate that can be simultaneously extended and retracted to the front and rear ends is used, so that the supporting area is larger. However, the positions of the supports on both sides of the triangular area support formed by the tunnel support are not easy to adjust, which leads to limited support space in the triangular area and difficulty in erecting some support supports. Summary of the invention

[0003] Based on this, it is necessary to provide a tunnel withdrawal triangular area support bracket for the triangular area support formed by the tunnel bracket. The positions of the two side brackets are not easy to adjust, which leads to limited triangular area support space and difficulty in erecting some support brackets.

[0004] In order to achieve the above purpose, the utility model adopts the following scheme:

[0005] A tunnel retreat triangle support bracket, comprising:

[0006] A first hydraulic support, a second hydraulic support, a connecting assembly and an adjusting assembly, wherein the first hydraulic support comprises a first base, a first supporting mechanism and a first top beam, one end of the first supporting mechanism is connected to the upper end surface of the first base, and the end of the first supporting mechanism away from the first base is hinged to the lower end surface of the first top beam; the second hydraulic support comprises a second base, a second supporting mechanism and a second top beam, the second base is arranged at one end of the first base, one end of the second supporting mechanism is connected to the upper end surface of the second base, and the end of the second supporting mechanism away from the second base is hinged to the lower end surface of the second top beam; the connecting assembly comprises a thruster, and the two ends of the thruster are respectively connected to the first base and the second base; the adjusting assembly comprises a first adjusting jack and a second adjusting jack, the first adjusting jack is arranged on one side of the second base for adjusting the position of the retracting support base, and the second adjusting jack is arranged on one side of the first top beam for adjusting the position of the retracting support top beam.

[0007] Preferably, the connecting assembly includes a first connecting beam, a second connecting beam, a first lifting jack and a second lifting jack, the first connecting beam passes through the first base and an end of the first connecting beam close to the second base is hinged to an end of the first base close to the second base, the second connecting beam passes through the second base and an end of the second connecting beam away from the first base is hinged to an end of the second base away from the first base, and the second connecting beam is hinged to the first connecting beam, the first lifting jack is arranged at an end of the first base away from the second base and is connected to an end of the first connecting beam away from the second base, the second lifting jack is arranged at an end of the second base close to the first base and is connected to an end of the second connecting beam close to the first base.

[0008] Preferably, a slide groove is provided at one end of the second connecting beam away from the first base, and the second base is hinged to the second connecting beam via a rotating shaft passing through the slide groove, and the rotating shaft can slide along the slide groove.

[0009] Preferably, a protrusion is provided at one end of the first connecting beam close to the second base, and a first groove is provided at one end of the second connecting beam close to the first base, the protrusion extends into the first groove, and a bolt is used to penetrate the first groove and the protrusion.

[0010] Preferably, the first supporting mechanism includes a first hydraulic component and a second hydraulic component, and the first hydraulic component and the second hydraulic component are symmetrically arranged on the first base. The arrangement direction of the first hydraulic component and the second hydraulic component is perpendicular to the direction of the lane, and the second hydraulic component is arranged in parallel on a side of the first hydraulic component close to the second base.

[0011] Preferably, the first supporting mechanism also includes a first four-bar linkage, one end of the first four-bar linkage is hinged to the upper end surface of the first base, the end away from the first base is hinged to an end of the first top beam close to the first hydraulic assembly, and the action direction of the first four-bar linkage is perpendicular to the direction of the tunnel.

[0012] Preferably, the second supporting mechanism comprises a third hydraulic component and a fourth hydraulic component, and the third hydraulic component and the fourth hydraulic component are symmetrically arranged on the second base and parallel to the direction of the lane.

[0013] Preferably, the second supporting mechanism also includes a second four-bar linkage, one end of the second four-bar linkage is hinged to the upper end surface of the second base, the end away from the second base is hinged to the side of the second top beam close to the fourth hydraulic assembly, and the action direction of the second four-bar linkage is parallel to the direction of the lane.

[0014] Preferably, a rotation resetting device is disposed at one end of each of the first supporting mechanism and the second supporting mechanism.

[0015] Preferably, a telescopic jack is provided on one side of the second top beam, a telescopic end of the telescopic jack is connected to a baffle, and an end of the baffle away from the telescopic jack is hinged to one side of the second top beam.

[0016] The technical solution adopted in this application can achieve the following beneficial effects:

[0017] By setting a first adjusting jack 410 to push the base of the retraction bracket and a second adjusting jack 420 to push the top beam of the retraction bracket, the movement of the retraction bracket or the position adjustment of the tunnel withdrawal triangle support bracket of the present application is completed. The operation is simple and convenient, and the problem of limited support space in the triangle area and difficulty in erecting some support brackets is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the tunnel withdrawal triangle support bracket disclosed in the embodiment of the present application.

[0019] Figure 2 A side view of the second hydraulic support of the tunnel withdrawal triangle support support disclosed in an embodiment of the present application.

[0020] Figure 3 This is a partial connection diagram of the tunnel withdrawal triangle support bracket disclosed in the embodiment of the present application.

[0021] Figure 4 This is a partial layout diagram of the tunnel withdrawal triangle support bracket disclosed in the embodiment of the present application.

[0022] Figure 5 A partial top view of the tunnel retreat triangle support bracket disclosed in an embodiment of the present application.

[0023] Figure 6 This is a schematic diagram of the support support for the tunnel retreat triangle area disclosed in the embodiment of the present application.

[0024] Among them: the first base 110, the first supporting mechanism 120, the first hydraulic component 121, the second hydraulic component 122, the first top beam 130, the second hydraulic support 200, the second base 210, the second telescopic jack 211, the second baffle 212, the second supporting mechanism 220, the third hydraulic component 221, the fourth hydraulic component 222, the second top beam 230, the telescopic jack 231, the baffle 232, the connecting component 300, the first connecting beam 310, the second connecting beam 320, the slide groove 321, the rotating shaft 322, the first lifting jack 330, the second lifting jack 340, the thruster 350, the protrusion 360, the first groove 370, the adjusting component 400, the first adjusting jack 410, and the second adjusting jack 420. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0026] It should be noted that when a device is considered to be "connected" to another device, it may be directly connected to the other device or there may be an intermediate device at the same time. The terms "inside", "top", "upper", "lower", "upper", "lower" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0028] See also Figures 1 to 6 The present application provides a tunnel retreat triangle support support, including: a first hydraulic support, a second hydraulic support 200, a connecting assembly 300 and an adjusting assembly 400, wherein the first hydraulic support includes a first base 110, a first supporting mechanism 120 and a first top beam 130, one end of the first supporting mechanism 120 is connected to the upper end surface of the first base 110, and the end of the first supporting mechanism 120 away from the first base 110 is hinged to the lower end surface of the first top beam 130; the second hydraulic support 200 includes a second base 210, a second supporting mechanism 220 and a second top beam 230, the second base 210 is arranged at one end of the first base 110, and the second supporting mechanism 120 is hinged to the lower end surface of the first top beam 130. One end of the structure 220 is connected to the upper end surface of the second base 210, and the end of the second support mechanism 220 away from the second base 210 is hinged to the lower end surface of the second top beam 230; the connecting assembly 300 includes a propeller 350, and the two ends of the propeller 350 are respectively connected to the first base 110 and the second base 210; the adjusting assembly 400 includes a first adjusting jack 410 and a second adjusting jack 420, the first adjusting jack 410 is arranged on one side of the second base 210, and is used to adjust the position of the retracting bracket base, and the second adjusting jack 420 is arranged on one side of the first top beam 130, and is used to adjust the position of the retracting bracket top beam.

[0029] Specifically, see Figure 6 , along the direction of the tunnel, a row of supports to be withdrawn is arranged, the number of supports to be withdrawn is several, and several retreat supports are arranged at the end of the tunnel, and the support direction of the retreat support is perpendicular to the support direction of the support to be withdrawn, so that the temporary support support in the triangular area formed by the retreat support and the support to be withdrawn is convenient for retreat. The first hydraulic support is relatively close to the tunnel exit, and the second hydraulic support 200 is arranged behind the first hydraulic support. The first hydraulic support and the second hydraulic support 200 both adopt but are not limited to four-column support hydraulic supports, two-column shielding hydraulic supports and other coal mine tunnel retreat triangular area support supports, the first support mechanism 120 and the second support mechanism 220 adopt but are not limited to hydraulic, pneumatic and other support mechanisms with telescopic functions, and four-linkages can also be used,

[0030] Furthermore, a first adjusting jack 410 is provided at one end of the second base 210 close to the center line of the lane, and a first push rod is provided at the telescopic end of the first adjusting jack 410. The telescopic direction of the first adjusting jack 410 is perpendicular to the direction of the lane, and it is telescopic from the triangular area to the middle of the lane. After the second hydraulic support 200 is supported, the first adjusting jack 410 uses the second base 210 as a fulcrum to retract the first push rod, so that the first push rod pushes the adjacent retracting support to move, thereby realizing the position adjustment of the retracting support, and the operation is more convenient. Simple and convenient. Similarly, a second adjusting jack 420 is provided on the side of the first top beam 130 of the first hydraulic support away from the triangular area support. A second push rod is provided at the telescopic end of the second adjusting jack 420. The telescopic direction of the second adjusting jack 420 is the same as the telescopic direction of the first adjusting jack 410. The base of the adjacent retracting support is pushed by the first adjusting jack 410, and the second adjusting jack 420 pushes the top beam of the retracting support, thereby adjusting the position of the adjacent retracting support. The operation is simpler and more convenient.

[0031] The technical solution adopted in this application can achieve the following beneficial effects:

[0032] By setting a first adjusting jack 410 to push the base of the retraction bracket and a second adjusting jack 420 to push the top beam of the retraction bracket, the movement of the retraction bracket or the position adjustment of the tunnel withdrawal triangle support bracket of the present application is completed. The operation is simple and convenient, and the problem of limited support space in the triangle area and difficulty in erecting some support brackets is solved.

[0033] Based on the above scheme, the connecting assembly 300 includes a first connecting beam 310, a second connecting beam 320, a first lifting jack 330 and a second lifting jack 340, the first connecting beam 310 passes through the first base 110 and the end of the first connecting beam 310 close to the second base 210 is hinged to the end of the first base 110 close to the second base 210, the second connecting beam 320 passes through the second base 210 and the end of the second connecting beam 320 away from the first base 110 is hinged to the end of the second base 210 away from the first base 110, and the second connecting beam 320 is hinged to the first connecting beam 310, the first lifting jack 330 is arranged at the end of the first base 110 away from the second base 210 and is connected to the end of the first connecting beam 310 away from the second base 210, the second lifting jack 340 is arranged at the end of the second base 210 close to the first base 110 and is connected to the end of the second connecting beam 320 close to the first base 110.

[0034] Specifically, a hollow groove is provided along the center line of the first base 110 and the second base 210 along the direction of the lane, the first connecting beam 310 is embedded in the groove of the first base 110, and the end of the first connecting beam 310 close to the second hydraulic support 200 is hinged to the end of the first base 110 close to the second base 210 by means of a rotating shaft, a bearing, etc., the side wall of the fixed end of the first lifting jack 330 is perpendicular to the upper section of the first base 110 and fixedly connected, and the telescopic end of the first lifting jack 330 is matched with the end of the first connecting beam 310 away from the second base 210 by means of a latch, a snap connection, etc., so that the first lifting jack 330 can be lifted. When the first lifting jack 330 is in the first position, the lower end surface of the first connecting beam 310 is flush with the lower end surface of the first base 110. When the first lifting jack 330 is in the second position, the first lifting jack 330 extends downward, so that the first connecting beam 310 rotates downward along the hinge, thereby lifting the first base 110. Similarly, the second connecting beam 320 is embedded in the groove of the second base 210, and the end of the second connecting beam 320 away from the first hydraulic support is hinged to the end of the second base 210 away from the first base 110 by means of a rotating shaft, a bearing, etc., and the side wall of the fixed end of the second lifting jack 340 is perpendicular to the upper end surface of the second base 210. The telescopic end of the second lifting jack 340 is connected to the end of the second connecting beam 320 close to the first base 110 by means of a latch, a snap connection, etc., so that when the second lifting jack 340 is in the third position, the lower end surface of the second connecting beam 320 is flush with the lower end surface of the second base 210. When the second lifting jack 340 is in the fourth position, the second connecting beam 320 contacts the ground of the tunnel, and the second lifting jack 340 extends downward, so that the second connecting beam 320 rotates downward along the hinge, thereby realizing the lifting of the second base 210; the end of the second connecting beam 320 close to the first base 110 cooperates The connection adopts a spherical bearing, a universal joint, a latch hinge, etc. to ensure that the rotation of the first connecting beam 310 does not affect the second connecting beam 320. The connection method of the first support mechanism 120 and the first top beam 130 is the same as the installation method of the second support mechanism 220 and the second top beam 230. The connection can be made by but not limited to universal joints, spherical bearings, etc. The thruster 350 adopts but not limited to hydraulic, pneumatic, etc. one-way or two-way telescopic jack 231, and the telescopic end is fixedly connected to one end of the first base 110 close to the second base 210, and the fixed end is hinged to one end of the second base 210 close to the first base 110.

[0035] Furthermore, one or two first connecting beams 310 and second connecting beams 320 are provided. When both the first connecting beam 310 and the second connecting beam 320 are provided, the first connecting beam 310 and the second connecting beam 320 respectively divide the first base 110 and the second base 210 into two halves in the direction of the tunnel. If both the first connecting beam 310 and the second connecting beam 320 are provided, the two first connecting beams 310 and the center line of the first base 110 in the tunnel direction are symmetrically arranged, and the two second connecting beams 320 and the center line of the second base 210 in the tunnel direction are symmetrically arranged, so as to ensure that the first base 110 and the second base 210 can be lifted and solve the problem of the support stress offset causing the bracket to tilt and overturn. Preferably, both the first connecting beam 310 and the second connecting beam 320 are provided as one to reduce the contact with the ground and make it easier and more convenient for the first base 110 or the second base 210 to move forward.

[0036] When the support to be withdrawn is withdrawn one end near the temporary support support in the triangular area that is easy to withdraw, and the bottom of the tunnel is muddy due to long-term water accumulation under the base of the withdrawn support to be withdrawn, the telescopic end of the first lifting jack 330 is extended downward, so that the end of the first connecting beam 310 close to the first lifting jack 330 is lowered, the silt is squeezed and contacts with the hard soil under the silt, and the first base 110 is lifted upward in the opposite direction, so that the lower end surface of the first base 110 is flush with the upper surface of the muddy geology, and the first base 110 is lowered. A support mechanism 120 is used to move the first top beam 130 downward away from the top of the tunnel, and the second top beam 230 contacts the top of the tunnel. The pusher 350 uses the second base 210 as a fulcrum, and the telescopic end extends forward to push the first base 110 to move toward the tunnel exit. The moving distance depends on the telescopic length of the pusher 350. When the first base 110 crosses the muddy geological section, the telescopic end of the first lifting jack 330 retracts back and returns the first connecting beam 310 from the second position to the first position, and extends the first support jack upward. The mechanism 120 makes the first top beam 130 contact the top of the tunnel. When the first base 110 is still in the muddy geological section, the first lifting jack 330 does not move, and the first top beam 130 rises and contacts the top of the tunnel. Different operations are selected according to different working conditions, and the pusher 350 uses the first base 110 as a fulcrum to drag the second base 210 to move in the direction of the first base 110. When the second base 210 enters the muddy geological condition, the operation of the second lifting jack 340 is the same as the operation of the first lifting jack 330. Similarly, the telescopic end of the second lifting jack 340 extends downward to move the second connecting beam 320 downward through the muddy geology and the hard soil below, so that the lower end surface of the second base 210 rises and is flush with the upper surface of the muddy geology, and is pushed or dragged by the propulsion member 350 to make the first base 110 and the second base 210 leave the muddy geology working condition and withdraw normally. If the muddy geology working condition is too long, the first lifting jack 330 and the second lifting jack 340 continue to extend, forcibly push or drag.

[0037] By setting the connecting component 300, the lower end surfaces of the first base 110 and the second base 210 are raised, the contact with the ground is reduced, the resistance of the ground to the first base 110 and the second base 210 is reduced, and the withdrawal is simpler and more convenient. At the same time, the first connecting beam 310 and the second connecting beam 320 are set on the center line of the direction of the lane of the first base 110 and the second base 210, so that the rise of the first base 110 and the second base 210 is more stable, and the problem of the first hydraulic support and the second hydraulic support 200 tilting and overturning due to the support gravity offset is solved. The first connecting beam 310 and the second connecting beam 320 are respectively hinged to the first base 110 and the second base 210, so that there is no stress concentration during normal support. The first connecting beam 310 and the second connecting beam 320 are used to cooperate and connect, so as to solve the problem of the first base 110 and the second base 210 affecting each other due to the successive rise.

[0038] Based on the above solution, a slide groove 321 is provided at one end of the second connecting beam 320 away from the first base 110 , and the second base 210 is hinged to the second connecting beam 320 through a rotating shaft 322 passing through the slide groove 321 , and the rotating shaft 322 can slide along the slide groove 321 .

[0039] Specifically, a long strip-shaped slide groove 321 is provided in the middle of the end of the second connecting beam 320 away from the first base 110, and the length of the slide groove 321 is not less than the telescopic length of the propulsion member 350. The rotating shaft 322 passes through the slide groove 321, and both ends extend into the second base 210 and are rotatably connected. When the end of the first connecting beam 310 away from the second base 210 is driven downward by the second lifting jack 340, the first connecting beam 310 rotates along the rotating shaft 322, thereby realizing the lifting of the first base 110. When the propulsion member 350 uses the second base 210 as a fulcrum to push the first base 110 forward, the rotating shaft 322 moves along the slide groove 321 close to the first base 1 The first base 110 is moved to the left of the support frame 310 and the second base 110 is moved to the right of the support frame 310. When the push member 350 is used as the fulcrum, the shaft 322 is at the end of the slide groove 321 away from the first base 110. The push member 350 is used to drag the shaft 322 along the end of the slide groove 321 away from the first base 110 toward the end of the slide groove 321 close to the first base 110, thereby realizing the movement of the second base 210. At the same time, the end of the second connecting beam 320 away from the first base 110 is flush with the end of the second base 210 away from the first base 110, which makes the operation simpler and more convenient.

[0040] In a preferred embodiment, a protrusion 360 is provided at one end of the first connecting beam 310 close to the second base 210, and a first groove 370 is provided at one end of the second connecting beam 320 close to the first base 110. The protrusion 360 extends into the first groove 370, and a bolt is used to penetrate the first groove 370 and the protrusion 360.

[0041] Specifically, one end of the first connecting beam 310 close to the second base 210 extends out of the first base 110 and is hinged to the protrusion 360 by means of bolts, latches, etc., and one end of the second connecting beam 320 close to the first base 110 extends out of the second base 210 and is provided with a first groove 370. The protrusion 360 extends into the first groove 370, and the first groove 370 and the protrusion 360 are hinged in a direction perpendicular to the direction of the lane by using a latch or a bolt, so that the end of the first connecting beam 310 away from the second connecting beam 320 moves downward, and the end of the first connecting beam 310 extending out of the first base 110 moves upward and rotates at the hinge with the protrusion 360. The end of the protrusion 360 away from the first connecting beam 310 does not rise or fall, thereby not affecting the second connecting beam 320, and vice versa, so that the up and down rotation of the first connecting beam 310 and the second connecting beam 320 do not move relative to each other, making the operation simpler and more convenient.

[0042] In a preferred embodiment, the first supporting mechanism 120 includes a first hydraulic component 121 and a second hydraulic component 122, and the first hydraulic component 121 and the second hydraulic component 122 are symmetrically arranged on the first base 110, and the arrangement direction of the first hydraulic component 121 and the second hydraulic component 122 is perpendicular to the direction of the lane, and the second hydraulic component 122 is arranged in parallel on the side of the first hydraulic component 121 close to the second base 210.

[0043] Specifically, the first hydraulic component includes two columns, and the columns adopt existing devices such as but not limited to hydraulic cylinders and telescopic columns. The central connecting line of the horizontal projections of the two columns is perpendicular to the direction of the tunnel. The second hydraulic component 122 is parallel to the first hydraulic component 121, and the two columns of the first hydraulic component 121 are controlled simultaneously, and the two columns of the second hydraulic component 122 are controlled simultaneously, and the first hydraulic component 121 and the second hydraulic component 122 are independently controlled. When the first hydraulic support reaches the temporary support area, the two columns of the first hydraulic component 121 are controlled to extend upward at the same time to support the top of the tunnel, and then the two columns of the second hydraulic component 122 are raised again until the first top beam 130 is completely in contact with the top of the tunnel. Through the independent control of the first hydraulic component 121 and the second hydraulic component 122, they control and cooperate with each other and successively contact the top of the tunnel, so as to adapt to the top of the tunnel with any slope, and the operation is simpler, more convenient and safer.

[0044] Based on the above scheme, the first support mechanism 120 also includes a first four-link, one end of the first four-link is hinged to the upper end surface of the first base 110, and the end away from the first base 110 is hinged to the end of the first top beam 130 close to the first hydraulic assembly 121, and the action direction of the first four-link is perpendicular to the direction of the lane. The end of the first four-link close to the first top beam 130 is arranged between the two columns of the first hydraulic assembly 121, and is controlled simultaneously with the first hydraulic assembly 121, so that the action direction of the first four-link is the same as the action direction of the first hydraulic assembly 121, and both are parallel to the direction of the lane. The first four-link makes the horizontal force borne by the first hydraulic support larger and more stable. At the same time, according to the height change of the first support mechanism 120, with the help of the action of the first four-link, the first top beam 130 and the top of the lane are more stable and firm, and the distance change is small, so as to avoid bumping and damaging the top of the lane.

[0045] In a preferred embodiment, the second supporting mechanism 220 includes a third hydraulic component 221 and a fourth hydraulic component 222. The third hydraulic component 221 and the fourth hydraulic component 222 are symmetrically arranged on the second base 210 and parallel to the direction of the lane.

[0046] Specifically, the third hydraulic component 221 and the fourth hydraulic component 222 each include two columns, and the uprights adopt existing devices such as but not limited to hydraulic cylinders, telescopic columns, etc., and the line connecting the midpoints of the horizontal projections of the two columns of the third hydraulic component 221 is parallel to the direction of the tunnel, and is perpendicular to the line connecting the midpoints of the horizontal projections of the first hydraulic component 121 and the second hydraulic component 122. By changing the supporting direction of the second supporting mechanism 220, the stability of the support is improved, the compressive bearing capacity of the second supporting mechanism 220 is made higher, and the overload risk of the second supporting mechanism 220 is reduced.

[0047] Based on the above scheme, the second support mechanism 220 also includes a second four-link, one end of the second four-link is hinged to the upper end surface of the second base 210, and the end away from the second base 210 is hinged to the side of the second top beam 230 close to the fourth hydraulic assembly 222, and the action direction of the second four-link is parallel to the direction of the lane. For example, the end of the second four-link away from the second base 210 is set between the two columns of the fourth hydraulic assembly 222, and the second four-link and the fourth hydraulic assembly 222 are both away from the side of the triangular area support, and the second four-link and the fourth hydraulic assembly 222 are controlled simultaneously. By setting the second four-link, the bearing capacity of the triangular area support side is increased, the stability is improved, and the probability of safety hazards is reduced.

[0048] Furthermore, a rotation resetting device is disposed at one end of each of the first supporting mechanism 120 and the second supporting mechanism 220 .

[0049] Specifically, one end of the first support mechanism 120 and the second support mechanism 220 both adopt a rotational reset device such as that disclosed in the publication number CNA. The specific structure will not be repeated here. When the first support mechanism 120 rises, the rotational reset device automatically adjusts according to the slope of the top of the tunnel when the first top beam 130 contacts the top of the tunnel, so that the upper end surface of the first top beam 130 contacts the top of the tunnel completely, increasing the contact area and avoiding stress concentration that causes damage to the first top beam 130 or damage and collapse of the top of the tunnel. Similarly, the second support mechanism 220 and the second top beam 230 are also connected by the rotational reset device, playing the same role, so that when the first top beam 130 and the second top beam 230 contact the top of the tunnel at an interval, the contact area is the maximum contact area, thereby making the stability and safety higher.

[0050] In an optimized implementation scheme, a telescopic jack 231 is provided on one side of the second top beam 230 , the telescopic end of the telescopic jack 231 is connected to a baffle 232 , and one end of the baffle 232 away from the telescopic jack 231 is hinged to one side of the second top beam 230 .

[0051] Specifically, the fixed end of the telescopic jack 231 extends into the interior of the second top beam 230. When the telescopic end of the telescopic jack 231 is not extended, it is flush with the side wall of the second top beam 230. The bottom of the baffle 232 is fixedly connected to the telescopic end of the telescopic jack 231. The top of the baffle 232 is hinged to one end of the second top beam 230 using bolts, bearings, etc. When the telescopic end of the telescopic jack 231 is extended, the lower part of the baffle 232 is flipped upward along the hinge of the baffle 232 until it is supported on the top of the triangular area. By increasing the support area, the stability of the support is improved, and the phenomenon of landslides or slopes caused by imperfect support in the triangular area can be avoided.

[0052] Furthermore, a second telescopic jack 211 is provided on one side of the second base 210, and a second baffle 212 is connected to the telescopic end of the second telescopic jack 211. For example, the fixed end of the second telescopic jack 211 is fixed obliquely or fixed to one end of the second base 210 by a snap-on method, and the telescopic end of the second telescopic jack 211 is extended obliquely from bottom to top, so that the second baffle 212 supports the lower part of the triangular area from below, and the second baffle 212 cooperates with the baffle 232, and the second telescopic jack 211 is provided at one end of the third hydraulic assembly 221 and close to one side of the triangular area, so that the side wall of the triangular area is more fully supported, the exposed area of ​​the support is reduced, and the problem of landslide or stepping on the slope in the triangular area is solved, thereby improving the safety of the support.

[0053] The above-described embodiments only express the way of equipment layout of the present application, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent application; it should be pointed out that for ordinary technicians in this field, several adjustments and improvements can be made without departing from the concept of the present application, which all belong to the scope of protection of the present application; therefore, the scope of protection of the patent of this application shall be based on the attached claims.

Claims

1. A tunnel retreat triangle support bracket, characterized in that: include: A first hydraulic support, wherein the first hydraulic support comprises a first base, a first supporting mechanism and a first top beam, wherein one end of the first supporting mechanism is connected to an upper end surface of the first base, and one end of the first supporting mechanism away from the first base is hinged to a lower end surface of the first top beam; A second hydraulic support, wherein the second hydraulic support comprises a second base, a second supporting mechanism and a second top beam, wherein the second base is arranged at one end of the first base, one end of the second supporting mechanism is connected to the upper end surface of the second base, and one end of the second supporting mechanism away from the second base is hinged to the lower end surface of the second top beam; A connecting assembly, the connecting assembly comprising a propulsion member, two ends of the propulsion member are respectively connected to the first base and the second base; as well as The adjusting component includes a first adjusting jack and a second adjusting jack, wherein the first adjusting jack is arranged on one side of the second base, and the second adjusting jack is arranged on one side of the first top beam.

2. The tunnel retreat triangle support bracket as claimed in claim 1, characterized in that: The connecting assembly includes a first connecting beam, a second connecting beam, a first lifting jack and a second lifting jack. The first connecting beam passes through the first base and an end of the first connecting beam close to the second base is hinged to an end of the first base close to the second base. The second connecting beam passes through the second base and an end of the second connecting beam away from the first base is hinged to an end of the second base away from the first base. The second connecting beam is hinged to the first connecting beam. The first lifting jack is arranged at an end of the first base away from the second base and is connected to an end of the first connecting beam away from the second base. The second lifting jack is arranged at an end of the second base close to the first base and is connected to an end of the second connecting beam close to the first base.

3. The tunnel retreat triangle support bracket as described in claim 2 is characterized in that: A sliding groove is arranged at one end of the second connecting beam away from the first base, and the second base is hinged to the second connecting beam via a rotating shaft passing through the sliding groove, and the rotating shaft can slide along the sliding groove.

4. The tunnel retreat triangle support bracket as claimed in claim 3 is characterized in that: A protrusion is provided at one end of the first connecting beam close to the second base, and a first groove is provided at one end of the second connecting beam close to the first base. The protrusion extends into the first groove, and a bolt is used to penetrate the first groove and the protrusion.

5. The tunnel retreat triangle support bracket as claimed in claim 1, characterized in that: The first supporting mechanism includes a first hydraulic component and a second hydraulic component, and the first hydraulic component and the second hydraulic component are symmetrically arranged on the first base. The arrangement direction of the first hydraulic component and the second hydraulic component is perpendicular to the direction of the lane, and the second hydraulic component is arranged in parallel on a side of the first hydraulic component close to the second base.

6. The tunnel retreat triangle support bracket as claimed in claim 5, characterized in that: The first supporting mechanism also includes a first four-bar linkage, one end of which is hinged to the upper end surface of the first base, and the end away from the first base is hinged to the end of the first top beam close to the first hydraulic assembly, and the action direction of the first four-bar linkage is perpendicular to the direction of the tunnel.

7. The tunnel retreat triangle support bracket as claimed in claim 1, characterized in that: The second supporting mechanism includes a third hydraulic component and a fourth hydraulic component. The third hydraulic component and the fourth hydraulic component are symmetrically arranged on the second base and parallel to the direction of the lane.

8. The tunnel retreat triangle support bracket as claimed in claim 7, characterized in that: The second supporting mechanism also includes a second four-bar linkage, one end of which is hinged to the upper end surface of the second base, and one end away from the second base is hinged to a side of the second top beam close to the fourth hydraulic assembly, and the action direction of the second four-bar linkage is parallel to the direction of the lane.

9. The tunnel retreat triangle support bracket as claimed in claim 1, characterized in that: A rotation resetting device is disposed at one end of each of the first supporting mechanism and the second supporting mechanism.

10. The tunnel retreat triangle support bracket as claimed in claim 1, characterized in that: A telescopic jack is arranged on one side of the second top beam, a telescopic end of the telescopic jack is connected with a baffle, and an end of the baffle away from the telescopic jack is hinged to one side of the second top beam.

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