WO2023060900A1

WO2023060900A1 - Rapid supporting device for roadway

Info

Publication number: WO2023060900A1
Application number: PCT/CN2022/095353
Authority: WO
Inventors: 王梁; 王海军; 王洪磊; 赵建; 刘少权; 曹云; 孟建新; 杨晓辉; 刘凡; 王振; 杜学飞; 赵嘉宇
Original assignee: 煤炭科学研究总院有限公司
Priority date: 2021-10-11
Filing date: 2022-05-26
Publication date: 2023-04-20

Abstract

The present disclosure relates to the technical field of roadway support. Disclosed is a rapid supporting device for a roadway. The rapid supporting device for a roadway comprises a supporting canopy frame, a canopy frame mounting trolley and a canopy frame dismounting trolley, wherein the supporting canopy frame can expand and contract; a mounting mechanism is arranged on the canopy frame mounting trolley, and the mounting mechanism is used for grabbing the supporting canopy frame placed on the canopy frame mounting trolley and supporting the supporting canopy frame in a roadway; a dismounting mechanism is arranged on the canopy frame dismounting trolley, and the dismounting mechanism is used for dismounting a supporting canopy frame in a supporting state in the roadway, and placing same on the canopy frame dismounting trolley; and the canopy frame dismounting trolley can transport the supporting canopy frame placed on the canopy frame dismounting trolley onto the canopy frame mounting trolley.

Description

Roadway quick support device

Cross References to Related Applications

This application is based on the Chinese patent application with the application number 202111180051.3 and the application date on October 11, 2021 and the Chinese patent application with the application number 202122446207.X and the application date on October 11, 2021, and requires the Chinese patent application The priority of this Chinese patent application, the entire content of this Chinese patent application is hereby incorporated into this application as a reference.

technical field

The disclosure relates to the technical field of roadway support, in particular to a roadway rapid support device.

Background technique

Existing mechanized excavation of rectangular roadways is generally carried out by bolting while driving. However, due to the complex process and changing roadway conditions of the bolting technology, there is currently no mature automatic solution and manual support is required. The existing bolt support method is slow to support, and the problem of unbalanced excavation is prominent, which seriously restricts the efficiency of roadway excavation.

Contents of the invention

The present disclosure aims to solve one of the technical problems in the related art at least to a certain extent.

To this end, the embodiments of the present disclosure provide a quick support device for a roadway, including a support scaffold, a scaffold installation vehicle, and a scaffold removal vehicle. The supporting scaffolding can be expanded and contracted, and the supporting scaffolding is used for the support of the roadway rock wall after being expanded; one or more of the supporting scaffoldings can be placed on the scaffolding installation vehicle frame; the scaffold installation vehicle is provided with an installation mechanism, and the installation mechanism is used to grab the support scaffold placed on the scaffold installation vehicle and support the support scaffold in the roadway; the The scaffolding installation vehicle is a roadheader; the scaffolding removal vehicle is provided with a disassembly mechanism, and the removal mechanism is used to dismantle the supporting scaffolding in the roadway in a supporting state and place it on the scaffolding removal vehicle; The scaffold removal vehicle can transport the support scaffold placed on it to the scaffold installation vehicle; the support scaffold placed on the scaffold installation vehicle and the scaffold removal vehicle are all in contraction state, the scaffold installation vehicle and the support scaffold placed on the scaffold installation vehicle can pass under the support scaffold supported in the roadway.

The roadway rapid support device provided by the present application can improve the degree of automation of the supporting scaffolding operation, realize automatic excavation and support, and is beneficial to improve the working efficiency of roadway excavation. In addition, it prevents the staff from staying in the working face of the roadway for a long time, reduces the risk of occupational diseases of the staff, and improves the safety of the operation.

In some embodiments, the supporting scaffolding includes a top beam, two shoulder beams, two support columns and lower legs, and the top beam is used to support the roof of the roadway; the top beam includes a beam body and is fixed on The elastic pad above the beam body, the side of the elastic pad facing away from the beam body is an upwardly arched arc surface; one end of one of the shoulder beams is rotatably connected to one end of the top beam, and the other shoulder beam One end of the beam is rotatably connected to the other end of the top beam, and the two ends of the beam body are rotatably connected to the two shoulder beams respectively; One end of the shoulder beam away from the top beam is rotatably connected, and the support column includes an upper leg, a lower leg and a suspension oil cylinder; one end of the upper leg is sleeved on the outside of the lower leg; the suspension The oil cylinder is arranged inside the upper leg, one end of the suspension cylinder is connected to the upper leg, the other end of the suspension cylinder is connected to the lower leg, and the suspension cylinder drives the lower leg The legs slide along the length direction of the upper leg; the upper leg is provided with barbs on the surface in contact with the roadway side; each support column is connected to a rotatable lower leg at the end away from the shoulder beam , the end of the lower leg away from the support column is provided with a grounding foot, the grounding foot is rotatably connected to the lower leg, and the grounding foot can rotate freely under the action of gravity; the lower leg is provided with a hook finger, The bottom of the upper leg is provided with a fixed column, and the hook finger can be hooked on the fixed column.

In some embodiments, the suspension cylinder includes a cylinder block, a piston rod and a piston. One end of the cylinder body is provided with a first connecting portion for connecting with the upper leg. One of the end faces of the piston rod is provided with an oil pool hole, and the inside of the piston rod is also provided with an oil passage; the end of the piston rod provided with the oil pool hole is inserted into the cylinder block and can be inserted into the cylinder block. Sliding in the body, the piston rod body located inside the cylinder block is provided with an annular oil passage; one end of the oil passage communicates with the annular oil passage, and the other end of the oil passage passes through the oil return passage and the oil pool hole The bottom of the oil return channel is connected with the second one-way valve; the piston rod body located outside the cylinder block is provided with an air charging hole communicating with the oil pool hole, and an air charging joint is arranged in the air charging hole ; The end of the piston rod away from the first connecting portion is connected to the lower leg. The piston is arranged in the cylinder body and fixed with the piston rod; the outer wall of the piston is provided with an oil storage chamber and a main seal installation groove, and the piston rod is provided with a The oil inlet oil passage; the end surface of the piston is provided with an exhaust hole communicating with the oil storage chamber, and a third one-way valve is arranged in the exhaust hole. An oil injection hole is arranged on the piston rod body located outside the cylinder block, one end of the oil injection hole communicates with the oil passage, and an oil injection device is arranged in the oil injection hole; the oil injection device includes a first one-way valve and an oil injection joint, the oil injection joint is installed in the oil injection hole, and the first one-way valve is arranged at one end of the oil injection joint close to the oil passage.

In some embodiments, the oil passage is a cylindrical hole, the length direction of the oil passage is consistent with the length direction of the piston rod, and one end of the oil passage passes through the piston rod and is blocked by the first plug The outer wall of the piston is provided with two guide sleeve installation grooves surrounding the piston, the guide sleeve installation grooves are respectively located at both ends of the piston outer wall, and the main seal installation groove is located between the two guide sleeve installation grooves; The outer wall of the piston is also provided with a grease adsorption ring, and the grease adsorption ring is arranged between the installation groove of the main seal and one of the guide sleeve installation grooves; There is an oil level detection hole connected to the oil pool hole, and the oil level detection hole is blocked by the second plug; the outer wall of the piston rod on both sides of the annular oil passage is provided with an O-ring installation groove around the piston rod , an O-ring is arranged in the O-ring installation groove, and the O-ring is located between the piston and the piston rod.

In some embodiments, the lower leg includes two parallel wings, the distance between the two wings is not less than the width of the upper leg, and the two wings are connected and fixed by a connecting piece One end of the wing plate is opened with a notch to form the hook finger, and the other end of the wing plate is opened with a second through hole; the end of the lower leg close to the support column is provided with a first hollow hinge pin, The two ends of the first hollow hinge pin are respectively arranged in the second through holes of the two wing plates; the end of the support column away from the shoulder beam is arranged between the two wing plates, and The end of the support column away from the shoulder beam is rotatably connected to the first hollow hinge pin; the upper leg is hinged to the shoulder beam through a second hollow hinge pin, and the second hollow hinge pin is provided with a first Three through holes; the first hollow hinge pin is provided with a first through hole, and the cross-sectional shape of the first through hole is non-circular.

In some embodiments, the scaffolding installation vehicle is further provided with a scaffolding transportation mechanism, and the scaffolding transportation mechanism includes a first bracket, a first slideway, a first nut slider, a first lead screw and a first drive unit. There are two first brackets and they are respectively arranged on both sides in the width direction of the scaffold installation vehicle. The first slideway is connected with the first bracket and extends along the length direction of the scaffold installation vehicle, and the first slideway is used for placing a support scaffold. A part of the first nut slider is slidably disposed in the first slideway, and another part of the first nut slider is located outside the first slideway. The first lead screw is rotatably arranged in the first slideway along the length direction of the first slideway, and the first lead screw is threadedly engaged with the first nut slider. The first driving device is arranged at one end of the first slideway and connected with the first screw, and the first driving device is used to drive the first screw to rotate and drive the first nut to slide The block slides along the first slideway; the installation mechanism includes two installation arms, and the two installation arms of the installation mechanism are respectively arranged on both sides of the scaffold installation vehicle; the installation arms are connected with the support shed The racks are detachably connected, and the installation arm of the installation mechanism is used to grab the supporting scaffold placed on the first slideway and support the supporting scaffold in the roadway.

In some embodiments, the scaffold dismantling vehicle is also provided with a scaffold transfer mechanism, and the scaffold transfer mechanism includes a second bracket, a second slideway, a second nut slider, a second lead screw and a second drive unit. The second bracket is liftably connected to the scaffold dismantling vehicle. The second slideway is connected with the second bracket and extends along the length direction of the scaffold dismantling vehicle. There are two second slideways, and the two second slideways are disassembled along the scaffolding. The width direction of the car is arranged at intervals. A part of the second nut slider is slidably disposed in the second slideway, and another part of the second nut slider is located outside the second slideway. The second lead screw is rotatably arranged in the second slideway along the length direction of the second slideway, and the second lead screw is threadedly engaged with the second nut slide block. The second driving device is arranged at one end of the second slideway and is connected with the second screw, and the second driving device is used to drive the second screw to rotate and drive the second nut to slide The block slides along the second slideway; the disassembly mechanism includes two installation arms, and the two installation arms of the disassembly mechanism are respectively arranged on both sides of the scaffold disassembly vehicle; the installation arms and the support scaffold can be They are detachably connected, and the installation arm of the dismounting mechanism is used for dismounting the supporting scaffold from the roadway and placing the dismantled supporting scaffold on the scaffold transfer mechanism.

In some embodiments, the second bracket includes a connecting plate, a first lifting cylinder and a second lifting cylinder. One end of the connecting plate is rotatably connected with the frame removal vehicle, and the other end of the connecting plate is rotatably connected with the second slideway. One end of the first lifting cylinder is rotatably connected to the scaffold removal vehicle, and the other end of the first lifting cylinder is rotatably connected to the first end of the second slideway. One end of the second lifting cylinder is rotatably connected to the scaffold removal vehicle, and the other end of the second lifting cylinder is rotatably connected to the second end of the second slideway.

In some embodiments, the scaffolding dismantling vehicle further includes a drill frame, which is rotatably mounted on the scaffolding dismantling vehicle; the drilling frame includes: a support frame, a top plate and a drill box; the Positioning holes are arranged on the top plate, the top plate is connected with the upper end of the support frame, and the top plate is movable along the length direction of the support frame; the drilling box is connected with the lower end of the support frame, and the drilling box Used to connect drill pipe or anchor rod.

In some embodiments, the installation arm includes a slide table, a boom, a small arm, a boom tilt cylinder, a small arm tilt cylinder, a boom telescopic cylinder, and a small boom telescopic cylinder, and the slide table is connected with a scaffolding installation vehicle or The scaffold dismantling vehicle is fixed; the boom is telescopic, and the first end of the boom is rotatably connected to the sliding table; the small arm is telescopic, and the first end of the small arm is connected to the large The second end of the arm is rotatably connected, and the small arm is provided with a first strut and a second strut, and the first strut and the second strut are adapted to be detachably connected with the support frame. connected, the first strut and the second strut are respectively fixed at both ends of the forearm, the cross-sectional shape of the first strut is non-circular; the first end of the boom tilt cylinder is connected to the sliding The table is rotatably connected, the second end of the boom tilt cylinder is rotatably connected with the boom, and the slide table can drive the boom and the boom tilt cylinder to be installed along the scaffold The length direction of the vehicle or the scaffold dismantling vehicle moves, and the boom tilting cylinder can drive the boom to swing in a plane; the first end of the small arm tilting cylinder is rotatably connected with the boom, so The second end of the arm tilt cylinder is rotatably connected with the arm; the arm includes a first arm and a second arm, and the first arm is slidably arranged on the second arm In the arm, the boom telescopic cylinder is arranged in the boom, and the first end of the boom telescopic cylinder is connected with the first boom, and the second end of the boom telescopic cylinder is connected with the The second big arm is connected; the small arm includes a first small arm and a second small arm, the first small arm is slidably arranged in the second small arm, and the telescopic cylinder of the small arm is arranged in the The first end of the telescopic cylinder is connected to the first forearm, and the second end of the telescopic cylinder is connected to the second forearm.

Description of drawings

Fig. 1 is an overall structural diagram of a quick support device for a roadway according to an embodiment of the present disclosure.

Fig. 2 is a structural diagram of a scaffold installation vehicle in an embodiment of the present disclosure.

Fig. 3 is a structural diagram of a scaffold dismantling vehicle in an embodiment of the present disclosure.

Fig. 4 is a structural diagram of a mounting arm in an embodiment of the present disclosure.

Fig. 5 is a schematic structural view of the boom in the embodiment of the present disclosure.

Fig. 6 is a schematic structural diagram of a forearm in an embodiment of the present disclosure.

Fig. 7 is a structural view of the unfolded state of the supporting scaffold in the embodiment of the present disclosure.

Fig. 8 is a structural view of the contracted state of the supporting scaffold in the embodiment of the present disclosure.

Fig. 9 is a schematic diagram of the installation state of the supporting scaffold in the embodiment of the present disclosure.

Fig. 10 is a schematic diagram of force analysis and load distribution of the supporting scaffold in an installed state in an embodiment of the present disclosure.

Fig. 11 is a schematic structural view of a top beam in an embodiment of the present disclosure.

Fig. 12 is another structural schematic view of the top beam in the embodiment of the present disclosure.

Fig. 13 is a structural diagram of the assembled support column, lower leg and grounding foot in the embodiment of the present disclosure.

Fig. 14 is a structural diagram of a lower leg in an embodiment of the present disclosure.

Fig. 15 is the structure of the ground pin in the embodiment of the present disclosure.

Fig. 16 is an internal structure diagram of the suspension oil cylinder in the embodiment of the present disclosure.

Fig. 17 is a partially enlarged view at B in Fig. 16 .

Fig. 18 is an assembly diagram of the first bracket, the first slideway, the first lead screw and the first driving device in the embodiment of the present disclosure.

Fig. 19 is a partially enlarged view at A in Fig. 7 .

Reference signs: 1. Scaffold dismantling vehicle; 2. Support scaffold; 3. Scaffold installation vehicle; 4. First bracket; 5. First slideway; 6. First nut slider; 7. First Driving device; 701, first reducer; 702, first motor; 8, installation mechanism; 9, limit block; 10, disassembly mechanism; 11, drilling box; 12, support frame; 13, top plate; Bracket; 1401, the first lifting cylinder; 1402, connecting plate; 1403, the second lifting cylinder; 15, the second slideway; 16, the second nut slider; 17, the second lead screw; 18, the second driving device; 1801, the second reducer; 1802, the second motor; 19, the slide table; 20, the boom; 2001, the second boom; 2002, the first boom; 21, the boom tilt cylinder; 22, the second support rod ; Top beam; 2801, elastic cushion; 2802, beam body; 29, shoulder beam; 30, upper leg; 31, fixed column; 32, lower leg; 33, second hollow hinge pin; 34, first hollow hinge pin ; , the first through hole; 40, the suspension oil cylinder; 41, the notch; 42, the second through hole; 43, the cylinder block; 44, the oil return passage; 45, the guide sleeve installation groove; 46, the oil storage chamber; 47. Main seal installation groove; 48. Grease adsorption ring; 49. Piston; 50. Second plug; 51. Oil level detection hole; 52. Piston rod; 53. First plug; 54. Oil filling joint; 55 , the first one-way valve; 56, the oil passage; 57, the second one-way valve; 58, the charging joint; 59, the annular oil passage; 60, the O-ring installation groove; 61, the exhaust hole; Three one-way valves; 63, oil injection hole; 64, the first lead screw; 65, barbs; 66, oil inlet oil passage; 67, the second pin shaft; 68, roadway rock wall; frame; 70, the first connecting portion; 71, the oil pool hole.

Detailed ways

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present disclosure and should not be construed as limiting the present disclosure.

Referring to FIGS. 1 to 19 , this embodiment provides a roadway rapid support device, which includes a support scaffold 2 , a scaffold installation vehicle 3 and a scaffold removal vehicle 1 . The supporting scaffolding 2 can be expanded and contracted, and the supporting scaffolding 2 is used for supporting the roadway rock wall 68 after being expanded. One or more of the supporting scaffolds 2 can be placed on the scaffold installation vehicle 3, and the scaffold installation vehicle 3 can be a driving unit; the scaffold installation vehicle 3 is provided with an installation mechanism 8, and the installation mechanism 8 is used to grab the support scaffold 2 placed on the scaffold installation vehicle 3 and support the support scaffold 2 in the roadway. The scaffold removal vehicle 1 is provided with a disassembly mechanism 10, and the removal mechanism 10 is used to dismantle the supporting scaffold in the roadway and place it on the scaffold removal vehicle 1; The dismantling vehicle 1 can transport the supporting scaffold placed thereon to the scaffold installation vehicle 3 . The support scaffold 2 placed on the scaffold installation vehicle 3 and the scaffold removal vehicle 1 is in a contracted state, and the scaffold removal vehicle 1 and the support scaffold placed on the scaffold removal vehicle 1 The scaffolding 2 can pass under the supporting scaffolding supported in the roadway.

The use process of this embodiment is as follows:

①. Pre-store a certain number of supporting scaffolds on the scaffolding installation vehicle, then control the scaffolding installation vehicle to move in the roadway, move the scaffolding installation vehicle to the designated position and transport the supporting scaffolding placed on it together to that location.

②. The installation mechanism on the scaffold installation vehicle grabs a support scaffold placed on the scaffold installation vehicle, and then the installation mechanism props up the support scaffold so that the support scaffold is supported in the roadway.

③. The scaffolding installation vehicle excavates along the roadway, and takes down a supporting scaffold at intervals to support the roadway until the supporting scaffolds placed on the scaffolding installation vehicle are used up or supported to the target position.

④. After the supporting scaffolds placed on the scaffolding installation vehicle are exhausted, the scaffolding installation vehicle stops, and after the tunnel is ventilated and dust-reduced, the staff enters the working face of the tunnel and carries out bolt support.

⑤ After the staff completes the bolt support, the dismantling mechanism on the scaffold dismantling vehicle shrinks and disassembles the supporting scaffold supported in the roadway, and places the dismantled supporting scaffold on the scaffold dismantling vehicle. Until the scaffolding is dismantled, the supporting scaffolding is fully placed on the vehicle.

⑥. Then control the scaffold removal vehicle to move to the scaffold installation vehicle. During this process, the support scaffold placed on the scaffold removal vehicle is in a shrinking state, so that the scaffold removal vehicle and the support scaffold placed on it can Pass under the propped support scaffold; when the scaffold removal vehicle moves to an appropriate position behind the scaffold installation vehicle, the scaffold removal vehicle transfers the support scaffold placed on it to the scaffold installation vehicle.

⑦. Step ② can be repeated afterwards to start the next operation cycle, thereby realizing the continuous automatic support of the scaffolding.

The supporting scaffolding includes a top beam 28 , two shoulder beams 29 , two support columns and lower legs 35 . The top beam is used to support the roof of the roadway, so the length of the top beam is adapted to the width of the roadway; one end of one of the shoulder beams is rotatably connected to one end of the top beam, and one end of the other shoulder beam is connected to the other end of the top beam. One end is rotatably connected; the support column is telescopic, and the two support columns are rotatably connected to the ends of the two shoulder beams away from the top beam; each of the support columns is connected to a rotatable lower leg at the end away from the shoulder beam , the end of the lower leg away from the supporting column is provided with a grounding foot 36 . Between the top beam and the shoulder beam, between the shoulder beam and the supporting column, and between the supporting column and the lower leg are all hinged by pin shafts, and the top beam, the shoulder beam, and the supporting column are always in the same plane when rotating. When the supporting scaffolding shrinks, the two shoulder beams rotate toward the middle of the supporting scaffolding, and the lower ends of the two shoulder beams and the two supporting columns approach each other, thereby realizing the overall reduction in the width of the supporting scaffolding; at the same time The support column shrinks and becomes shorter, and the lower leg rotates upward to realize folding, so that the overall height of the supporting scaffold becomes smaller. The expansion process of the supporting scaffolding is opposite to its contraction process, and will not be repeated here.

In order to realize the expansion and contraction of the support column, in some embodiments, the support column includes an upper leg 30, a lower leg 32 and a suspension cylinder 40; one end of the upper leg is sleeved on the outside of the lower leg; The suspension cylinder is arranged inside the upper leg, one end of the suspension cylinder is connected to the upper leg, the other end of the suspension cylinder is connected to the lower leg, and the suspension cylinder drives the lower leg along the upper leg Sliding in the length direction, thereby realizing the expansion and contraction of the supporting column, and then realizing the adjustment of the overall height of the supporting scaffold.

In some embodiments, the top surface of the top beam 28 is an upwardly arched arc surface, and the radius of curvature of the top surface of the top beam 28 is smaller than the radius of curvature of the roadway roof. When the roadway is rectangular, it can be considered that the radius of curvature of the roof of the roadway is infinite, as long as the radius of curvature of the roof beam is finite, it is smaller than the radius of curvature of the roof of the roadway; when the roof of the roadway has a finite radius of curvature, the radius of curvature of the roof beam is smaller than radius of curvature. When in use, the top surface of the top beam faces upwards, and the top beam undergoes a certain elastic deformation under the push of the support column and is connected to the top as a whole, so that the contact load between the top beam and the top plate presents a bow-shaped distribution.

In some embodiments, the top beam 28 includes a beam body 2802 and an elastic pad 2801 fixed above the beam body 2802. The beam body 2802 and the elastic pad 2801 can be fixed by bonding or bolts. The beam body 2802 The two ends of the elastic pad are respectively hinged with two shoulder beams 29; the side of the elastic pad facing away from the beam body is an upwardly arched arc surface. The beam body described herein may be a straight beam or a curved beam. As shown in FIG. 11 , the beam body is a straight beam at this time, and the thickness of the elastic pad gradually decreases from the middle of the elastic pad to the two ends of the elastic pad. Referring to Fig. 12, the beam body is an upwardly arched curved beam at this time, and the thickness of each position of the elastic pad is equal.

When the supporting scaffold is in use, its beam body contacts the roof of the roadway through the elastic pad, and the elastic pad is elastically deformed under the push of the support column and fully contacts with the roof of the roadway. At this time, the supporting load distribution of the elastic pad to the roadway is shown in Figure 10 As shown, a bow-shaped load distribution is formed. The bow load distribution is roughly consistent with the required load of the roadway support, so this load distribution will produce a better support effect for the roadway, and change the state where the support force of the ordinary roof beam is concentrated on the support column to avoid damage to the roadway roof; in addition, the upper part of the beam body The elastic pad on the contact surface with the top of the roadway can make the top beam and the roadway flexibly contact, and largely avoid crushing the local protrusions in the roadway roof, and play a protective effect on the roadway roof.

The suspension cylinder 40 includes a cylinder block 43 , a piston rod 52 and a piston 49 . One end of the cylinder block 43 is provided with a first connecting portion 70 for connecting with the upper leg, and one end of the cylinder block is hinged with the upper leg through the first connecting portion 70 . One of the end faces of the piston rod 52 is provided with an oil pool hole 71, the oil pool hole 71 is located at the center of the piston rod, the axis of the oil pool hole coincides with the axis of the piston rod, and the inside of the piston rod is also provided with There is an oil passage 56; one end of the piston rod provided with an oil pool hole is inserted into the cylinder body and can slide in the cylinder body, and an annular oil passage 59 is arranged on the piston rod body inside the cylinder body. The oil passage 59 surrounds the outer wall of the piston rod for a week; one end of the oil passage 56 communicates with the annular oil passage 59, and the annular oil passage can be communicated with the oil passage 56 by drilling holes on the piston rod during specific implementation. . The other end of the oil passage is communicated with the bottom of the oil pool hole through the oil return passage 44, and a second check valve 57 is arranged in the oil return passage; An air charging hole connected to the oil pool hole, and an air charging joint 58 is arranged in the air charging hole; the end of the piston rod away from the first connecting part is connected to the lower leg. The piston is installed in the cylinder body and fixed with the piston rod; the outer wall of the piston is provided with an oil storage chamber 46 and a main seal installation groove 47, and both the oil storage chamber and the main seal installation groove surround the outer wall of the piston for a week , the piston rod is provided with an oil inlet oil passage 66 that communicates the oil storage chamber with the annular oil passage; the end face of the piston is provided with an exhaust hole 61 that communicates with the oil storage chamber, and the exhaust hole A third one-way valve 62 is disposed inside the valve 61 .

The working principle of the above suspension oil cylinder is: by setting the oil pool hole and circuit in the suspension oil cylinder, the internal pressure change of the suspension oil cylinder is used to form an automatic liquid replenishment circuit, so that the gas in the oil storage chamber is discharged, thereby prolonging the service life of the cylinder . The automatic replenishment mentioned therein refers to: bubbles appear in the oil storage cavity due to loss or release of dissolved gas in the oil, and as the suspension oil cylinder works elongated and the pressure in the suspension oil cylinder decreases, the bubbles will automatically expand and pass through. The exhaust hole with the third one-way valve 62 arranged on the upper end of the piston is discharged; when the suspension cylinder is compressed, as the pressure increases, the internal pressure of the suspension cylinder will pass the oil in the oil pool hole through the second one-way valve with the second one-way valve. The oil return passage of the valve 57 is pressed into the oil storage cavity, and the air bubbles in the oil storage cavity are compressed to become smaller, and the air bubbles in the oil storage cavity can be discharged after such a cycle, and the automatic replenishment function is realized.

The piston rod provided with the oil pool hole can not only be used as a space for oil storage, but also can increase the volume of high-pressure gas inside the suspension cylinder, thereby further increasing the stroke range of the effective support force of the suspension cylinder. Since there is always oil in the oil storage chamber, the main seal set in the main seal installation groove is always immersed in oil, so its performance and life can meet high requirements, and realize the high-pressure work of the suspended oil cylinder.

In some embodiments, the oil passage can be a cylindrical hole, the length direction of the oil passage is consistent with the length direction of the piston rod, and one end of the oil passage passes through the piston rod and passes through the first plug 53 Blocking, in this case the oil passage can be obtained by drilling. In order to realize the oil supply in the suspension oil cylinder, an oil injection hole 63 is arranged on the piston rod body outside the cylinder block, and one end of the oil injection hole 63 communicates with the oil passage. An oil injection device for injecting oil into the oil passage. In order to facilitate manufacturing, the oil injection hole and the oil return passage are designed as cylindrical holes, the diameter of the oil injection hole is not smaller than the diameter of the oil return passage, and the axis of the oil injection hole is collinear with the axis of the oil return passage. The oil injection device includes a first one-way valve 55 and an oil injection joint 54, the oil injection joint is installed in the oil injection hole, and the first one-way valve is arranged at one end of the oil injection joint close to the oil passage.

The outer wall of the piston is provided with two guide sleeve installation grooves 45 surrounding the piston. The guide sleeve installation grooves are respectively located at both ends of the piston outer wall, and the main seal installation groove is located between the two guide sleeve installation grooves. A grease adsorption ring 48 is also arranged on the outer wall of the piston, and the grease adsorption ring is arranged between the main seal installation groove and one of the guide sleeve installation grooves. When the suspension oil cylinder is assembled, the grease adsorption ring is infiltrated with grease in advance, so that when the suspension oil cylinder works, the grease on the grease adsorption ring can lubricate the cylinder block.

An oil level detection hole 51 communicating with the oil pool hole is opened on the piston rod body located outside the cylinder body of the cylinder, and the oil level detection hole is blocked by a second plug 50 . An O-ring installation groove 60 surrounding the piston rod is provided on the outer wall of the piston rod on both sides of the annular oil passage, and an O-ring is arranged in the O-ring installation groove 60, and the O-ring is located between the piston and the Between the piston rods, an O-ring is provided in the O-ring installation groove 60 to further ensure the sealing effect on both sides of the annular oil passage.

The above-mentioned suspension oil cylinder needs to complete the following preparatory work before use: 1. First, inject grease into the suspension oil cylinder through the oil injection joint and the first one-way valve, and open the oil level detection hole at the same time, and observe that the liquid level in the oil pool hole reaches the designated position. Stop the oil injection and use the second plug to block the oil level detection hole; 2. Connect the inflation joint 58 to the high-pressure air source and inflate to make the internal air pressure of the suspension cylinder reach a certain value; 3. Keep the suspension cylinder vertical and stand still After a sufficient period of time, use a test bench or test device to test to ensure that there is no leakage of the suspension cylinder. The suspension oil cylinder is kept in a nearly vertical state as far as possible during transportation and use.

Through the special structure and circuit design, the suspension oil cylinder has the function of automatic liquid replenishment, which can make its performance and service life comparable to that of hydraulic cylinders. The high-pressure cylinder gas and lubricating oil are in a cavity, and the hollow piston rod further increases the storage space of the high-pressure gas, thereby increasing the active stroke of its effective support, which is more space-saving than the system composed of ordinary hydraulic cylinders and high-pressure accumulators. In addition, if it is necessary to further increase the stroke of effective support, it can be realized by connecting a simple high-pressure air chamber outside the cylinder body. The suspension oil cylinder can replace the hydraulic cylinder in some special occasions where the space is limited, thereby eliminating a series of equipment such as the pumping station valve group matched with the hydraulic cylinder. The cost is low, and it has good economic benefits and practical functions.

In order to keep the shank in this state after being folded, hook fingers 37 can be set on the shank 35 , and fixing columns 31 can be set at the bottom of the upper leg 30 , and the hook fingers 37 can be hooked on the fixing columns. When the shank rotates upwards from the state in Fig. 7 to the state in Fig. 8, the hook fingers on the shank hook the bottom of the upper leg and fix it, realizing the folding of the shank and making the support scaffolding in a contracted state. The grounding foot 36 is rotatably connected to the shank, and the grounding foot can rotate freely under the action of gravity, so that the grounding foot hangs on one side of the shank when the shank rotates to the top, so that the grounding foot is basically in a vertical position, saving the space occupied .

In some embodiments, the lower leg includes two wings 3501 parallel to each other, the distance between the two wings 3501 is not less than the width of the upper leg to ensure that the upper leg can be accommodated between the two wings, The two wing plates are connected and fixed through the connecting piece 3502 . During processing, a notch 41 can be opened at one end of the wing plate to form the hook finger 37, and the other end of the wing plate 3501 is provided with a second through hole 42; Hollow hinge pin, the two ends of the first hollow hinge pin are respectively fixed in the second through holes of the two wing plates; the end of the support column away from the shoulder beam is arranged between the two wing plates, and the support column is away from One end of the shoulder beam is rotatably connected with the first hollow hinge pin. In order to facilitate hooking the lower leg on the fixing post, the notch can be designed in a V shape, that is, the width of the notch gradually decreases from the mouth of the notch to the bottom of the notch. The connecting piece can be a flat plate arranged between the two wing plates, and the flat plate and the two wing plates can be formed by bending a whole metal plate.

In some embodiments, the grounding leg 36 includes a bottom plate 3601 and a second connection portion 3602 fixed to the bottom plate 3601 , and the second connection portion 3602 is rotatably connected to the end of the lower leg away from the support column through the second pin shaft 67 . In order to further improve the contact performance between the grounding feet and the ground, the side of the bottom plate facing away from the second connecting portion is designed as a circular arc surface, and a plurality of anti-skid spikes 3603 are also arranged on the side of the bottom plate facing away from the second connecting portion. The anti-skid spikes may be hemispherical bumps arranged on the bottom surface of the bottom plate. When the supporting scaffolding in this embodiment is supported in the roadway, the bottom plate of the grounding foot is in contact with the ground of the roadway, so as to increase the contact area with the roadway, avoid the contact surface from being crushed, and provide better support Effect.

In order to make better use of the frictional force of the roadway rock wall 68 to the upper limbs, barbs 65 can be set on the surface where the upper leg contacts the side of the roadway, so that the upward and downward friction coefficients of the upper limbs are different. In some embodiments, the upper leg is hinged to the shoulder beam through a second hollow hinge pin, and a third through hole 38 is provided on the second hollow hinge pin. The lower leg is hinged to the lower leg through a first hollow hinge pin, and a first through hole 39 is arranged on the first hollow hinge pin, and the cross-sectional shape of the first through hole is non-circular. The lower leg is fixedly connected with the first hollow hinge pin, and the lower leg rotates synchronously with the first hollow hinge pin when the first hollow hinge pin rotates. Both the first hollow hinge pin and the second hollow hinge pin are perpendicular to the plane where the top beam, the shoulder beam, and the support column are located.

The scaffolding installation vehicle is also provided with a scaffolding transport mechanism, and the scaffolding transporting mechanism includes a first support 4, a first slideway 5, a first nut slider 6, a first lead screw 64 and a first driving device 7. The first brackets are two parallel to each other and are respectively installed on both sides in the width direction of the scaffolding installation vehicle. Carrier; a first slideway is installed on the top of each first support, and the first slideway extends along the length direction of the scaffold installation vehicle, that is, the length direction of the first slideway is consistent with the traveling direction of the scaffold installation vehicle . The first slideway is used to place the support scaffold, and after the support scaffold is placed on the first slideway, the support scaffold can also slide along the length direction of the first slideway under the action of external force. The end of the first slideway far away from the first driving device is provided with a limit block 9, and the supporting scaffold placed on the scaffold installation vehicle is specifically the first sliding block placed between the limit block and the first nut slider. on the road. In addition, the distance between the two first slide rails is not greater than the length of the top beam, ensuring that the supporting scaffold 69 in the retracted state can be placed on the two first slide rails. A part of the first nut slider is slidably arranged in the first slideway, and another part of the first nut slider is located outside the first slideway; The length direction is rotatably arranged in the first slideway. In order to realize the rotatable connection between the first lead screw 64 and the first slideway during specific implementation, the two ends of the first lead screw can be connected with the first slideway through the bearing seat. The track is fixed, and the first lead screw is threadedly matched with the first nut slider; the first drive device is arranged at one end of the first slideway and connected with the first lead screw, and the first drive device is used for Drive the first lead screw to rotate and drive the first nut slider to slide along the first slideway. When the first nut slider moves on the first slideway, its part outside the first slideway can be pushed and placed on the first slideway. The supporting scaffolding on the road is moved.

The installation mechanism includes two installation arms, and the two installation arms of the installation mechanism are respectively installed on both sides of the scaffold installation vehicle; the installation arms are detachably connected with the support scaffold, and the installation of the installation mechanism The arm is used for grabbing the supporting scaffolding placed on the first slideway and supporting said supporting scaffolding in the roadway.

The scaffold dismantling vehicle is also provided with a scaffold transfer mechanism, and the scaffold transfer mechanism includes a second support 14, a second slideway 15, a second nut slider 16, a second lead screw 17 and a second driving device 18. The second bracket is liftably connected to the scaffold dismantling vehicle; the second slideway is connected to the second support and extends along the length direction of the scaffold dismantling vehicle, and the second slideway is Two, the two second slides are arranged at intervals along the width direction of the scaffold removal vehicle; the second slides are used to place the support scaffold, and after the support scaffold is placed on the second slide , the supporting scaffold can also slide along the length direction of the second slideway under the action of external force. In addition, the distance between the two second slide rails is not greater than the length of the top beam, ensuring that the supporting scaffold 69 in the retracted state can be placed on the two second slide rails. A part of the second nut slider is slidably arranged in the second slideway, and another part of the second nut slider is located outside the second slideway; The length direction of the second slideway is rotatably arranged in the second slideway, and the second lead screw is screwed with the second nut slider; the second driving device is arranged at one end of the second slideway And connected with the second lead screw, the second driving device is used to drive the second lead screw to rotate and drive the second nut slider to slide along the second slideway, when the second nut slider moves on the second slideway The part located outside the second slideway can push the supporting scaffold placed on the second slideway to move.

The dismounting mechanism includes two mounting arms, and the two mounting arms of the dismounting mechanism are respectively installed on both sides of the scaffold dismantling vehicle; the mounting arms are detachably connected with the supporting scaffold, and the installation of the dismounting mechanism The arm is used for detaching the supporting scaffold from the roadway and placing the removed supporting scaffold on the scaffold transfer mechanism.

The first driving device 7 includes a first motor 702 and a first reducer 701 , and the first motor is in transmission connection with one end of the first lead screw through the first reducer. The second driving device 18 includes a second motor 1802 and a second reducer 1801 , and the second motor 1802 is in transmission connection with one end of the second lead screw 17 through the second reducer 1801 .

The installation arm on the scaffold installation vehicle and the installation arm on the scaffold removal vehicle have the same structure, and the installation arms all include slide table 19, boom 20, forearm 24, boom tilting cylinder 21 and forearm tilting cylinder 23. The slide table is fixed to the scaffold installation vehicle or the scaffold removal vehicle; the boom is telescopic, and the first end of the boom is hinged to the scaffold installation vehicle or the scaffold removal vehicle. The forearm is telescopic, the first end of the forearm is hinged to the second end of the boom, the forearm 24 is provided with a first strut 25 and a second strut 22, the first The strut and the second strut are adapted to be detachably connected to the support scaffolding. The first end of the boom tilting cylinder is hinged to the scaffolding installation vehicle or the scaffolding removal vehicle, and the second end of the boom tilting cylinder is hinged to the boom. The first end of the arm tilt cylinder is hinged to the boom, and the second end of the arm tilt cylinder is hinged to the arm. The slide table can drive the boom and the boom tilting cylinder to move along the length direction of the scaffolding installation vehicle or the scaffolding removal vehicle, and the boom tilting cylinder can drive the boom to swing in a plane.

In order to realize the expansion and contraction of the boom and the forearm, in some embodiments, the installation arm further includes a boom telescoping cylinder 26 and a forearm telescoping cylinder 27 . The boom 20 includes a first boom 2002 and a second boom 2001, the first boom is slidably arranged in the second boom, and the boom telescopic cylinder is arranged in the boom , and the first end of the boom telescopic cylinder is connected with the first boom, the second end of the boom telescopic cylinder is connected with the second boom, and the boom is controlled by telescoping the boom boom Extension of the arm. The small arm 24 includes a first small arm 2402 and a second small arm 2401, the first small arm is slidably disposed in the second small arm, and the telescopic cylinder of the small arm is disposed in the small arm , and the first end of the forearm telescopic cylinder is connected to the first forearm, the second end of the forearm telescopic cylinder is connected to the second forearm, and the small arm is controlled by the expansion and contraction of the forearm telescopic lever Extension of the arm.

The first strut 25 and the second strut 22 are respectively fixed at the two ends of the forearm, the first strut can be inserted into the first through hole on the first hollow hinge pin, and the second strut can be Insert it into the third through hole on the second hollow transfer pin. After the first support rod on the installation arm is inserted into the first through hole, and the second support rod is inserted into the third through hole, the grasping of the support scaffold is realized, and the installation arm can drive the support scaffold at this time Shrink or expand. The cross-sectional shape of the first strut is non-circular (such as a rectangle, a regular polygon, or an ellipse), and the cross-sectional shape of the first strut matches the cross-sectional shape of the first through hole. In some embodiments, the cross section of the first through hole on the first hollow hinge pin and the cross section of the first strut are both square. The first strut can rotate around its own axis, and after the first strut is inserted into the first through hole of the first hollow hinge pin, the lower leg can be driven to rotate by rotating the first strut. In a specific implementation, the first support rod may be a square steel or a square tube rotatably connected to the first forearm, and the second forearm may be a round steel welded to the second forearm.

In order to realize the lifting of the second support, the second support 14 may include a connecting plate 1402 , two first lifting cylinders 1401 and two second lifting cylinders 1403 . One end of the connecting plate 1402 is rotatably connected with the frame removal vehicle 1 , and the other end of the connecting plate 1402 is hinged with the second slideway. One end of each first lifting cylinder is hinged to the frame removal vehicle, and the other end of the first lifting cylinder is hinged to the first end of the second slideway. One end of each second lifting oil cylinder is hinged to the frame removal vehicle, and the other end of the second lifting oil cylinder is hinged to the second end of the second slideway. The lifting of the second bracket can be realized under the adjustment of the first lifting cylinder and the second lifting cylinder.

After the first driving device on the rack installation vehicle is started, the first lead screw is driven to rotate, and then the first nut slider moves along the length direction of the first slideway. During this process, the first nut slider is positioned on the first slider The outer part will push the support scaffolds on the first slideway to move, so that the close contact and neat arrangement of the support scaffolds can be ensured, and one of the support scaffolds is in contact with the limit block. After the support scaffolds in contact with the limit blocks on the scaffold transport mechanism are taken away by the installation mechanism, the first driving device is started again, and the first nut slider pushes all the support scaffolds on the first slideway to move forward One frame position realizes the automatic feeding and positioning of the supporting scaffolding.

The installation process of the scaffolding installation vehicle to the supporting scaffolding is as follows:

a. Control the scaffolding installation vehicle, and move the scaffolding installation vehicle to the designated position of the roadway;

b. Control the two installation arms of the scaffold installation vehicle, insert the first strut and the second brace on the installation arm into the support scaffold respectively (the support scaffold is placed on the scaffold installation vehicle and is in a contracted state ) in the first hollow hinge pin and the second hollow hinge pin to realize the grasping of the supporting scaffold;

c. Control the two installation arms of the scaffold installation vehicle to symmetrically lift up the grasped support scaffold, so that the top beam of the support scaffold and the roadway roof are pressed tightly;

d. Control the two installation arms of the scaffolding installation vehicle to close the upper legs in the supporting columns on both sides of the supporting scaffolding to the side of the roadway;

e. Control the expansion and contraction of the small arms of the two installation arms of the scaffold installation vehicle, so that the support column shrinks to a suitable position, and the hook finger supporting the scaffold is separated from the fixed column;

f. Control the first strut on the forearm to rotate, and drive the calf to rotate downward to an appropriate position;

g. Control the extension of the small arm on the scaffolding installation vehicle to an appropriate position, so that the grounding foot is grounded;

h. Control the forearm on the scaffolding installation vehicle to further extend, drive the left and right supporting columns of the supporting scaffolding to further extend, and make the supporting scaffolding perform proper pre-tensioning, so that the upper limbs of the supporting scaffolding can overcome the side Help the friction, further compress the top beam, and make the whole supporting scaffolding in a state of tension, so as to provide the best supporting effect. The effect diagram after the installation of the supporting scaffold is shown in Figure 9.

According to the supporting state and process of the supporting scaffolding, the acceptance analysis is carried out, and the acceptance analysis of the installation process is shown on the right side of Figure 10. The angle between the lower leg and the vertical direction is set to α, and the angle between the shoulder beam and the vertical direction is set to α. is β.

In order to facilitate the calculation, the friction force of the roadway rock wall 68 and the influence of the distribution position of each hinge point are ignored, all the forces are translated and concentrated, and all forces are decomposed and synthesized according to the vertical and horizontal directions.

Let the support force of the outrigger be F ₁ , and the friction coefficient of the roadway rock wall 68 against the upper limbs downward is μ ₁ and the frictional resistance is F _{μ 1}

The upward driving force of the upper limb leg is:

F _up = F ₁ -F _μ1

The positive pressure on the leg side of the upper limb is:

F _pressure = F _up ·tgβ+F ₁ ·tgα=F ₁ (tgβ+tgα)-F _μ1

Friction resistance of roadway rock wall 68 to upper limb legs:

F _μ1 = F _pressure · μ ₁ = [F ₁ (tgβ+tgα)-F _μ1 ] μ ₁

Organized:

F _μ1 ＝F ₁ (tgβ+tgα)/(1+1/μ ₁ )

The initial support force of the top beam:

F _initial = F ₁ -F _{μ1 =} [1-(tgβ+tgα)/(1+1/μ ₁ )]F ₁

When the roof comes under pressure, the force analysis of the supporting scaffold is shown on the left side of Figure 10. At this time, half of the roof pressure (symmetrically designed on both sides of the supporting scaffold) is assumed to be F ₂ , which is related to the supporting force F of the supporting scaffold. ₁ To achieve a new balance under the action of friction force, suppose the friction coefficient of the rock wall of the roadway to the upward direction of the upper limbs is μ ₂ , and the friction force is F _μ2 , at this time:

F ₁ =F ₂ -F _μ2

At this time, F ₂ is decomposed into the force F ₂₀ of the shoulder beam on the rock wall of the roadway. Since the force decomposition angles of the upper and lower hinge points of the shoulder beam are the same, the action force and the reaction force are the same, so the normal pressure F ₂₁ on the rock wall of the roadway is :

F ₂₁ =F ₂ ·tgβ

At this time, the components of the support force F ₁ of the supporting scaffold are the same as those at the initial support, but due to the pressure from the roof, the upper limbs tend to move downward, and the friction force of the roadway rock wall on the upper limbs is upward. To make use of the friction force of the roadway rock wall on the upper limb legs, barbs can be set on the contact surface of the upper limb legs to make the friction coefficients of the upward and downward directions different, as shown in Figure 9, then the friction force of the roadway rock wall on the upper limb legs :

F _μ2 = (F ₁₃ +F ₂₁ )·μ ₂ =(F ₁ ·tgα+F ₂ ·tgβ)·μ ₂

in addition

F ₁ ＝F ₂ −(F ₁ ·tgα+F ₂ ·tgβ)·μ ₂

Solve and get:

F ₁ =F ₂ (1-μ ₂ ·tgβ)/(1+μ ₂ ·tgα)

It can be seen from the formula that the friction force F _μ2 between the upper limbs and the roadway rock wall will increase with the increase of the pressure F ₂ from the roof, resulting in a self-augmentation effect. When β and α take appropriate values, F ₁ It is much smaller than F ₂ , that is, when the supporting frame provides a small supporting force, a great working resistance can be obtained. For example, when β=40°, α=10°, μ ₂ =1 (empirical value), F ₁ ≈0.29F ₂ . When β≥45°, the theoretical value of F ₁ is 0, that is, a self-locking effect occurs. No matter how large _F2 is, _F1 does not need to increase.

The dismantling process of the supporting scaffolding is opposite to its installation process, and the supporting scaffolding is removed from the roadway by using the dismantling mechanism on the scaffolding dismantling vehicle. After the dismantling mechanism removes the supporting scaffold from the roadway, the dismantled supporting scaffold is in a contracted state, and then the supporting scaffold is placed on the designated position on the second slideway, and then the second driving device drives the second lead screw to rotate , using the second nut slide block to push the support scaffold on the second slideway forward for a certain distance, so that a plurality of removed support scaffolds can be continuously placed at the designated position. After a certain number of supporting scaffolds are placed on the second slideway, the scaffold removal vehicle moves to an appropriate position behind the scaffold installation vehicle, and then the second support is lifted so that the second slideway on the scaffold removal vehicle is higher than the scaffolding. The first slideway on the frame installation vehicle, then start the second driving device, the second nut slide block pushes the support scaffold on the second slide rail to the first slideway, and thus completes the support scaffold from the scaffold The process of transferring the dismantling car to the scaffolding car. The scaffolding dismantling vehicle can return to the corresponding position again to continue the dismantling of the supporting scaffolding.

In some embodiments, the support removal vehicle further includes a drill frame, and the drill frame is rotatably arranged on the scaffold removal vehicle. Among them, the drill frame is used to provide guidance for the drill rod or bolt. Generally, the bolt support is drilled first, and then the bolt support is carried out in the drill hole. The rotatable setting can realize the bolt support operation at different angles. . During specific implementation, the drill frame includes a support frame 12, a top plate 13 and a drill box 11; the support frame is two and is respectively fixed on both sides of the second car body; the top plate is provided with a positioning hole, so The top plate is connected with the upper end of the support frame, and the top plate can move along the length direction of the support frame; when supporting, the top plate is pushed against the wall of the roadway; the drilling box is connected with the lower end of the support frame, and the Drill boxes are used to connect drill pipes or bolts. In this embodiment, the mounting arm of the dismounting mechanism can be fixed on one side of the drill frame.

In summary, the roadway quick support device provided by this application has the following advantages:

1. It can realize automatic support with excavation and support, realize automation and unmanned operation of the excavation of the working face, avoid the support work of personnel in the environment full of dust and noise when the excavation unit is working, and avoid the occurrence of occupational diseases.

2. It can improve the efficiency of support work during excavation, completely solve the problem of mismatching progress of excavation and support work in roadway excavation, and greatly improve the efficiency of roadway excavation.

3. Realize follow-up support with excavation, effectively shorten the distance of empty roof (distance without support in the excavation section), reduce the occurrence of roadway disasters such as roof fall to the greatest extent, and greatly reduce potential safety hazards.

4. The supporting scaffolding used in this application not only supports the top of the roadway, but also supports the side walls of the roadway, so as to avoid the side walls and possible accidents caused by them to the greatest extent.

5. The supporting scaffold used in this application is ingeniously designed, and the pressure on the top will generate self-increasing working resistance, which reduces the requirements for the working resistance of the supporting scaffolding. The structure is simple, light and handy, and takes up little space. Efficient use of space.

In describing the present disclosure, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientations or positional relationships indicated by "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying the referred devices or elements Must be in a particular orientation, constructed, and operate in a particular orientation, and thus should not be construed as limiting on the present disclosure.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In this disclosure, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection unless otherwise clearly defined and limited. , or integrated; can be mechanically connected, can also be electrically connected or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediary, can be the internal communication of two components or the interaction relationship between two components, Unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present disclosure according to specific situations.

In the present disclosure, unless otherwise clearly stated and limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or that the first and second features are indirect through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In this disclosure, the terms "one embodiment," "some embodiments," "example," "specific examples," or "some examples" mean a specific feature, structure, material, or feature described in connection with the embodiment or example. Features are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present disclosure, and those skilled in the art can understand the above-mentioned embodiments within the scope of the present disclosure. The embodiments are subject to changes, modifications, substitutions and variations.

Claims

A roadway quick support device, comprising:

Supporting scaffolding, the supporting scaffolding can be expanded and contracted, and the supporting scaffolding is used for supporting the rock wall of the roadway after being expanded;

A scaffolding installation vehicle, on which one or more supporting scaffolds can be placed; the scaffolding installation vehicle is provided with an installation mechanism for grabbing and placing the scaffolding on the scaffolding Install the supporting scaffold on the vehicle and support the supporting scaffold in the roadway;

A scaffold dismantling vehicle, the scaffold dismantling vehicle is provided with a dismantling mechanism, and the dismantling mechanism is used to dismantle the supporting scaffold in the roadway in a supporting state and place it on the scaffold dismantling vehicle; The frame dismantling vehicle can transport the support scaffold placed on it to the scaffold installation vehicle;

Wherein the support scaffolds placed on the scaffold installation vehicle and the scaffold removal vehicle are in contracted state, the scaffold installation vehicle and the support scaffold placed on the scaffold installation vehicle can be moved from The support passes under the support scaffolding in the roadway.
The roadway quick support device according to claim 1, wherein the support scaffolding comprises:

Top beam, the top beam is used to support the roof of the roadway; the top beam includes a beam body and an elastic pad fixed above the beam body, and the side of the elastic pad facing away from the beam body is an upwardly arched arc surface ;

Two shoulder beams, one end of the shoulder beam is rotatably connected to one end of the top beam, and one end of the other shoulder beam is rotatably connected to the other end of the top beam. The ends are respectively rotatably connected to the two shoulder beams;

Two support columns, the support columns are telescopic, and the two support columns are rotatably connected to the ends of the two shoulder beams away from the top beam respectively, and the support columns include upper legs, lower legs and suspension cylinders One end of the upper leg is set on the outside of the lower leg; the suspension cylinder is arranged inside the upper leg, one end of the suspension cylinder is connected with the upper leg, and the suspension cylinder The other end of the upper leg is connected with the lower leg, and the suspension cylinder drives the lower leg to slide along the length direction of the upper leg; prick;

A shank, a rotatable shank is connected to one end of each support column away from the shoulder beam, and a grounding foot is provided at the end of the shank away from the support column, and the grounding foot is rotatably connected to the shank, and The grounding foot can rotate freely under the action of gravity; the lower leg is provided with a hook finger, and the bottom of the upper leg is provided with a fixing column, and the hook finger can be hooked on the fixing column.
The roadway quick support device according to claim 2, wherein the suspension cylinder comprises:

A cylinder block, one end of the cylinder block is provided with a first connecting portion for connecting with the upper leg;

Piston rod, one of the end faces of the piston rod is provided with an oil pool hole, and the inside of the piston rod is also provided with an oil passage; the end of the piston rod provided with the oil pool hole is inserted into the inside of the cylinder block and can be Sliding in the cylinder body, the piston rod body located inside the cylinder body is provided with an annular oil passage; one end of the oil passage communicates with the annular oil passage, and the other end of the oil passage passes through the return The oil passage communicates with the bottom of the oil pool hole, and a second one-way valve is arranged in the oil return passage; the piston rod body located outside the cylinder block is provided with an air-filling valve communicating with the oil pool hole. The inflation hole is provided with an inflation joint; the end of the piston rod away from the first connection part is connected to the lower leg;

The piston is arranged in the cylinder body and fixed with the piston rod; the outer wall of the piston is provided with an oil storage chamber and a main seal installation groove, and the piston rod is provided with a An oil inlet passage connected to the annular oil passage; an exhaust hole communicating with the oil storage chamber is provided on the end surface of the piston, and a third one-way valve is arranged in the exhaust hole;

An oil injection hole is arranged on the piston rod body located outside the cylinder block, one end of the oil injection hole communicates with the oil passage, and an oil injection device is arranged in the oil injection hole; the oil injection device includes a first one-way valve and an oil injection joint, the oil injection joint is installed in the oil injection hole, and the first one-way valve is arranged at the end of the oil injection joint close to the oil passage.
The roadway quick support device according to claim 3, wherein the oil passage is a cylindrical hole, the length direction of the oil passage is consistent with the length direction of the piston rod, and the oil passage is One end passes through the piston rod and is blocked by the first plug; the outer wall of the piston is provided with two guide sleeve installation grooves surrounding the piston, and the guide sleeve installation grooves are respectively located at both ends of the piston outer wall. The seal installation groove is located between the two guide sleeve installation grooves; the outer wall of the piston is also provided with a grease adsorption ring, and the grease adsorption ring is arranged between the main seal installation groove and one of the guide sleeve installation grooves ; The piston rod rod body located outside the cylinder block is provided with an oil level detection hole communicated with the oil pool hole, and the oil level detection hole is blocked by a second plug; the two sides of the annular oil passage An O-ring installation groove surrounding the piston rod is provided on the outer wall of the piston rod, and an O-ring is arranged in the O-ring installation groove, and the O-ring is located between the piston and the piston rod.
The roadway rapid support device according to any one of claims 2 to 4, wherein the lower leg includes two mutually parallel wing plates, and the distance between the two wing plates is not less than the distance between the upper legs Width, the two wing plates are connected and fixed by a connecting piece; one end of the wing plate is opened with a notch to form the hook finger, and the other end of the wing plate is opened with a second through hole; the lower leg is close to One end of the support column is provided with a first hollow hinge pin, and the two ends of the first hollow hinge pin are respectively arranged in the second through holes of the two wing plates; the support column is far away from the shoulder beam One end is arranged between the two wing plates, and the end of the support column away from the shoulder beam is rotatably connected to the first hollow hinge pin; the upper leg is connected to the shoulder beam through the second hollow hinge pin Hinged, the second hollow hinge pin is provided with a third through hole; the first hollow hinge pin is provided with a first through hole, and the cross-sectional shape of the first through hole is non-circular.
The roadway rapid support device according to any one of claims 1 to 5, wherein, the scaffold installation vehicle is also provided with a scaffold transport mechanism, and the scaffold transport mechanism includes:

There are two first brackets, which are respectively arranged on both sides in the width direction of the scaffold installation vehicle;

A first slideway, the first slideway is connected to the first bracket and extends along the length direction of the scaffold installation vehicle, and the first slideway is used to place a support scaffold;

a first nut slider, a part of the first nut slider is slidably arranged in the first slideway, and another part of the first nut slider is located outside the first slideway;

a first lead screw, the first lead screw is rotatably arranged in the first slideway along the length direction of the first slideway, and the first lead screw is threadedly engaged with the first nut slider;

The first driving device, the first driving device is arranged at one end of the first slideway and connected with the first screw, the first driving device is used to drive the first screw to rotate and drive the The first nut slider slides along the first slideway;

Wherein the installation mechanism includes two installation arms, and the two installation arms of the installation mechanism are respectively arranged on both sides of the scaffold installation vehicle; the installation arms are detachably connected with the support scaffold , the installation arm of the installation mechanism is used to grab the support scaffold placed on the first slideway and support the support scaffold in the roadway.
The roadway quick support device according to any one of claims 1 to 6, wherein, the scaffold dismantling vehicle is also provided with a scaffold transfer mechanism, and the scaffold transfer mechanism includes:

a second support, the second support is liftably connected to the scaffold dismantling vehicle;

The second slideway, the second slideway is connected with the second bracket and extends along the length direction of the scaffold dismantling vehicle, there are two second slideways, and the two second slideways are along the The scaffold dismantling vehicles are arranged at intervals in the width direction;

a second nut slider, a part of the second nut slider is slidably arranged in the second slideway, and another part of the second nut slider is located outside the second slideway;

a second lead screw, the second lead screw is rotatably arranged in the second slideway along the length direction of the second slideway, and the second lead screw is threadedly engaged with the second nut slider;

The second driving device, the second driving device is arranged at one end of the second slideway and connected with the second screw, the second driving device is used to drive the second screw to rotate and drive the The second nut slider slides along the second slideway;

Wherein the disassembly mechanism includes two installation arms, and the two installation arms of the disassembly mechanism are respectively arranged on both sides of the scaffold removal vehicle; the installation arms are detachably connected with the support scaffold, and the disassembly The installation arm of the mechanism is used to disassemble the support scaffold from the roadway and place the dismantled support scaffold on the scaffold transfer mechanism.
The roadway quick support device according to claim 7, wherein the second bracket comprises:

A connecting plate, one end of the connecting plate is rotatably connected with the scaffold dismantling vehicle, and the other end of the connecting plate is rotatably connected with the second slideway;

A first lifting cylinder, one end of the first lifting cylinder is rotatably connected to the scaffold dismantling vehicle, and the other end of the first lifting cylinder is rotatably connected to the first end of the second slideway;

A second lifting cylinder, one end of the second lifting cylinder is rotatably connected with the scaffold dismantling vehicle, and the other end of the second lifting cylinder is rotatably connected with the second end of the second slideway.
The roadway rapid support device according to any one of claims 1 to 8, wherein the scaffold dismantling vehicle further comprises a drill frame, and the drill frame is rotatably arranged on the scaffold dismantling vehicle; The drill frame includes: a support frame, a top plate and a drill box; the top plate is provided with a positioning hole, the top plate is connected to the upper end of the support frame, and the top plate is movable along the length direction of the support frame; the drill The box is connected with the lower end of the support frame, and the drill box is used for connecting a drill rod or an anchor rod.
The roadway quick support device according to any one of claims 6 to 9, wherein the installation arm comprises:

a sliding platform, the sliding platform is fixed to the scaffold installation vehicle or the scaffold removal vehicle;

a boom, the boom is telescopic, and the first end of the boom is rotatably connected to the sliding table;

Forearm, the forearm is telescopic, the first end of the forearm is rotatably connected with the second end of the boom, the forearm is provided with a first strut and a second strut, the The first strut and the second strut are adapted to be detachably connected with the support scaffold, the first strut and the second strut are respectively fixed at both ends of the small arm, and the first The cross-sectional shape of the strut is non-circular;

Boom tilting cylinder, the first end of the boom tilting cylinder is rotatably connected with the slide table, the second end of the boom tilting cylinder is rotatably connected with the boom, and the slide table can Driving the boom and the boom tilt cylinder to move along the length direction of the scaffold installation vehicle or the scaffold removal vehicle, the boom tilt cylinder can drive the boom to swing in a plane;

An arm tilt cylinder, the first end of the arm tilt cylinder is rotatably connected to the boom, and the second end of the arm tilt cylinder is rotatably connected to the arm;

Boom telescopic cylinder, the boom includes a first boom and a second boom, the first boom is slidably set in the second boom, the boom telescopic cylinder is set in the big boom In the arm, and the first end of the boom telescopic cylinder is connected to the first boom, and the second end of the boom telescopic cylinder is connected to the second boom;

A telescopic cylinder for the small arm, the small arm includes a first small arm and a second small arm, the first small arm is slidably set in the second small arm, the telescopic cylinder for the small arm is set in the small arm In the arm, and the first end of the telescopic cylinder of the small arm is connected with the first small arm, and the second end of the telescopic cylinder of the small arm is connected with the second small arm.
The roadway rapid support device according to any one of claims 1 to 10, wherein the scaffold installation vehicle is a roadheader.