786results about "Protective covers" patented technology

The present invention belongs to the technical field of anchor protection apparatuses. Provided is an automatic anchor protection platform having combined support of anchor rods and anchor cables. The automatic anchor protection platform comprises a movable chassis, a multi-cycle anchor rod drilling rig, an anchor rod drilling rig posture positioning control device, an anchor cable support device, a temporary support device, an electrical system and a hydraulic system. Said automatic anchor protection platform integrates the multi-circle anchor rod drilling rig, the anchor cable support device and the temporary support device, and therefore meets the anchoring and support requirements of roadways under different geological conditions, allows anchor rod and anchor cable parallel support operations to be conducted at the same time, and achieves efficient coordinating matching linkage integrated design, thus further promoting efficient operation processes in limited spaces such as coal mines and tunnels.

The invention relates to a deep-ground well hole type flexible mining device and a using method thereof.The deep-ground well hole type flexible mining device comprises an equipment channel well communicated to a mining position, detection equipment and a flexible mining machine, and a power line of the flexible mining machine is connected with a power source outside the well; the flexible mining machine comprises a crushing device for excavating ores and an advancing driving device, the crushing device comprises an expansion arm, a crushing assembly and a crushing power assembly, the advancing driving device comprises a device body, and the device body and the expansion arm are connected in a hinged or rotary connection mode and can relatively move in at least two freedom degree directions. And the expansion arms and the device body are folded and unfolded, so that the flexible mining machine can be switched between a first state of passing through the equipment channel well and a second state of performing mining work. The mining operation can be carried out under the condition that personnel do not need to descend into a well, the mining requirements of a deep bottom layer and a seabed bottom layer can be met, and the mining difficulty and the mining cost are reduced.

The invention discloses a self-adaptive pre-pressure-relief danger relieving device for a deep mine. The self-adaptive pre-pressure-relief danger relieving device comprises a supporting assembly. The supporting assembly comprises two side supporting plates which are symmetrically arranged, a top supporting plate is installed on the tops of the side supporting plates through connecting plates, and a plurality of pressure relief buffering assemblies which are arranged at equal intervals are installed on the outer walls of the side supporting plates and the outer wall of the top supporting plate. A pressure relief channel is established through the drilling assembly, continuous and directional hydraulic pressure relief is achieved in combination with the jet flow pressure relief assembly, rock mass fractures are effectively expanded, in addition, high-energy shock waves can be rapidly released through the blasting pressure relief assembly, strong pressure relief is achieved, and the device is suitable for a high-stress area; the jet flow pressure relief assembly and the blasting pressure relief assembly are switched in the hollow anchor rod, and an external water supply system and a blasting control system are connected, so that a mine has high adaptive capacity and safety performance according to different pressure relief requirements.

The utility model provides a temporary supporting device and a heading machine, and relates to the technical field of heading equipment. The temporary supporting device comprises a base, a supporting arm, a supporting assembly and a first driving piece. The base is used for being arranged on the heading machine, the supporting arm is rotationally arranged on the base, the first driving part is arranged on the base, and the first driving part is connected with the supporting arm to drive the supporting arm to swing; the supporting assembly comprises a supporting frame, a side turning frame and a second driving part, the supporting frame is arranged at the end, away from the base, of the supporting arm and used for supporting the working face, the side turning frame is rotationally arranged on the side edge of the supporting frame, and the second driving part is arranged on the supporting frame and connected with the side turning frame so as to drive the side turning frame to abut against the working face. According to the temporary supporting device, the supporting area is increased, and the protection effect is improved.

The invention discloses a variable stiffness gradient energy absorption component for roadway support and an installation method, the variable stiffness gradient energy absorption component for roadway support comprises: stand columns arranged on two sides of a roadway, the upper ends of the stand columns being provided with a jacking mechanism; the brackets are arranged between the stand columns on the two sides and connected with the stand columns through connecting plates, and the adjacent brackets are further connected through third elastic pull rods; the buffer mechanism is rotationally mounted on the bracket and is connected with the stand column through a first elastic pull rod; the supporting anchor rod comprises a connecting pipe installed on the buffering mechanism, the connecting pipe is connected with a cushioning pipe, and the cushioning pipe is connected with an energy absorption pipe. The first rotating base rotates at the lower end of the connecting pipe and is connected with the stand column through a second elastic pull rod.

The invention discloses a tunnel trolley supporting system and method intelligently adapting to geological conditions, and belongs to the technical field of tunnel safety supporting. The device comprises a supporting truss, a rigid supporting mechanism and a flexible supporting mechanism. Wherein the flexible supporting mechanism comprises an air bag which is used for preliminarily supporting the surrounding rock of the tunnel; the rigid supporting mechanism comprises a mounting frame, a plurality of air chambers are arranged in the mounting frame, and adjusting assemblies are arranged in the air chambers; the adjusting assembly comprises a piston plate and a piston rod located on the piston plate, and the free end of the piston rod penetrates through the mounting frame, then extends into the air bag and is connected with a supporting plate. The supporting plates are used for carrying out secondary supporting on the tunnel surrounding rock from the interior of the air bag, the supporting pressure of each supporting plate can be adjusted through the inflation pressure in the corresponding air chamber so as to adapt to different geological conditions, good self-adaptive capacity is achieved, and dynamic distribution of the surrounding rock pressure is achieved.

The invention discloses an automatic continuous laying device for a flexible net of a coal mine tunneling roadway roof and a net laying method, and belongs to the technical field of coal mine roadway supporting. The device comprises a cantilever type fully-mechanized excavating machine, a top beam, a telescopic beam, a protection plate and a flexible net storage bin, and dynamic adjustment of the height and the pitch angle of the top beam is achieved through a supporting stand column lifting oil cylinder and an adjusting oil cylinder; different top plate inclination angles are adapted; the telescopic beam is driven by a telescopic oil cylinder to extend forwards to the coal wall, the flexible net is driven to be laid along the surfaces of the protection plate, the telescopic beam and the top beam, and the protection plate is overturned to be attached to the coal wall to achieve double protection of the top plate and the coal wall. The net laying method comprises the steps of top beam pre-adjustment in the cutting stage, telescopic beam net laying and top contact in the temporary supporting process, permanent supporting anchor rod fixing net pieces and continuous releasing of the flexible net with an anchoring point as a fulcrum in the reset stage. Integrated operation of cutting, supporting and net laying is achieved, automatic continuous net laying is achieved, linkage control is formed among all procedures, the applicability to roadway coal wall supporting is good, and the net laying operation efficiency is high.

The invention relates to the technical field of roadway supporting, in particular to a roadway tunneling self-adaptive temporary supporting device based on modular assembly. Comprising a supporting base used for supporting all assemblies arranged on the supporting base, a side wall supporting device used for supporting the two sides of a roadway, a top supporting device used for supporting the top of the roadway, a first driving device and a second driving device, wherein the first driving device and the second driving device are used for driving the side wall supporting device and the top supporting device respectively. The number of the side wall protection devices is two, and the two side wall protection devices are symmetrically arranged on the left side and the right side of the supporting base. The side wall and the top of the roadway in the tunneling process are supported at the same time through the integrated side wall supporting device and the top supporting device, comprehensive supporting of the top and the side wall of the roadway is achieved, the possibility of local collapse is reduced, and construction safety is improved.

The invention discloses a protective device for safety of mining machinery, and relates to the technical field of mining equipment, in particular to a protective device for safety of mining machinery, which comprises a base, a rotating frame, a protective component and a supporting component, and a plurality of iron chisels used for being inserted underground are fixedly mounted on the lower surface of the base; the lower end of the rotating frame is hinged to one end of the base; and through the combination of multi-stage damping and elastic buffering, the absorption capacity to large impact force is greatly improved. When the impact force continuously acts to cause the first piston plate to move to a set distance, the distance sensor transmits a signal to the control panel, and the control panel starts the electromagnet, so that the magnetic particles in the magnetorheological fluid are orderly arranged in a solid-like state, the position of the piston assembly is locked, excessive rotation of the rotating frame is avoided, and the service life of the rotating frame is prolonged. Compared with a locking block clamping structure of an existing device, the locking block clamping structure has higher fixing reliability, the situation that the structure loses efficacy due to continuous impact is effectively prevented, and safety of mining machinery is guaranteed.

The invention belongs to the field of coal mining, and particularly discloses a coal mining method for caving top coal in front of a coal face frame, which comprises the following steps of: S1, extending a telescopic beam to a coal wall support top plate, paving a metal net along a coal wall, and binding and connecting the metal net with a hydraulic support side protection plate to form a metal net false top; s2, a hydraulic support side protection plate above a front roller of the coal mining machine is contracted in advance, a coal seam at the bottom of the working face is cut according to the mining and caving ratio, and a coal caving opening is located at the front end of a hydraulic support telescopic beam; s3, the top coal seam is slowly released to a scraper conveyor to be conveyed out under the shielding action of a metal net and a hydraulic support side protection plate by stretching out and retracting a hydraulic support telescopic beam front and back; the coal discharging port is located in front of the support, top coal is slowly discharged to the scraper conveyor to be conveyed out from the side protection plate in front of the telescopic beam under the shielding effect of the laid metal net false roof, and the method has the advantages of being high in coal resource recovery rate, simple in construction organization and high in hydraulic support applicability.

The invention relates to the technical field of protective equipment, in particular to an underground metal mine mining roof supporting device and an installation method.The underground metal mine mining roof supporting device comprises detachable telescopic supports, a plurality of first sliding blocks are arranged on the left detachable telescopic support and the right detachable telescopic support at intervals from front to back, a cylinder is installed on each first sliding block, and a piston rod is slidably connected into each cylinder; supporting plates are connected to the piston rods through bolts, telescopic top beams are hinged between the two supporting plates which correspond to each other left and right, a left supporting piece and a right supporting piece are connected to the telescopic top beams in a sliding mode, and the supporting pieces are hinged to the first sliding blocks on the same sides. Each supporting plate can independently ascend and descend, each telescopic top beam can independently swing to adjust the angle where the supporting plate is located, and each telescopic top beam can independently stretch and retract to be adjusted so as to adapt to supporting of uneven mine tunnels, the effect of flexible adjustment can be achieved, and therefore the supporting device can adapt to the mine tunnels of different sizes and different shapes; therefore, the risk of local stress concentration can be reduced, and the mining supporting effect is improved.

The invention provides an onboard temporary supporting device with a cannon head, and relates to the technical field of engineering machinery, the onboard temporary supporting device comprises a rack, a cutting arm is arranged on the rack, a first multi-stage telescopic arm and a second multi-stage telescopic arm are arranged on the cutting arm, a supporting frame is arranged on the first multi-stage telescopic arm, and a second multi-stage telescopic arm is arranged on the second multi-stage telescopic arm. The first multi-stage telescopic arm is used for driving the supporting frame to ascend and descend, a plurality of first hydraulic hoses are arranged on the supporting frame, a protection plate is arranged on one side of the second multi-stage telescopic arm, the second multi-stage telescopic arm is used for adjusting the position of the protection plate, and a cannon head is arranged on one side of the cutting arm. More uniform supporting force can be provided for the outer wall surface of the top surface of the roadway, the supporting effect is improved, and the probability of accidents is reduced.

The utility model discloses a coal mine tunnel supporting structure which comprises two supporting loop bars. The lifting rod is connected to the interior of the supporting sleeve rod in a sliding manner; the top plate is arranged at the upper end of the lifting rod; the positioner is arranged on the outer side of the upper end of the supporting sleeve rod; the protective net and the two fixers are arranged on the two sides of the outer end of the top plate respectively. According to the coal mine tunnel supporting structure, the top of the coal mine tunnel is supported through the top plate, the width of the top plate can be adjusted so that the top plate can be matched with the width in the coal mine tunnel, the top plate is supported through the supporting sleeve rod and the lifting rod, and the supporting sleeve rod can slidably ascend and descend in the lifting rod; after the supporting sleeve rod is lifted to a proper position, the position of the supporting sleeve rod can be fixed through the positioner; the protective nets are arranged on the two sides of the outer end of the top plate correspondingly, falling rocks on the top of the coal mine roadway are blocked through the protective nets, and the situation that people in the roadway are injured by the falling rocks is avoided.

The utility model provides an onboard temporary supporting device which comprises a supporting frame and supporting columns, the number of the supporting columns is two, the supporting columns are arranged on the two sides of a cutting arm of a heading machine respectively and rotationally connected with the cutting arm, and the ends, away from the heading machine, of the two supporting columns are rotationally connected with the supporting frame through two connecting bases respectively. Buffering assemblies are arranged on the two sides of the top face of the supporting frame respectively, a displacement assembly capable of moving in the tunneling direction of the tunneling machine is arranged at the front end of the supporting frame, and overturning assemblies allowing the supporting columns and the supporting frame to be overturned are arranged on the two supporting columns. The device is easy to operate and good in supporting effect, the buffering effect can be effectively achieved when coal mine rockfall occurs, and the service life of the supporting device can be effectively prolonged.

The invention provides an anchor cutting and net breaking system and method for a fully mechanized top coal caving face roadway roof, the anchor cutting and net breaking system comprises an end support unit, an anchor cutting device and a net breaking blade, the anchor cutting device comprises a water jet cutter mechanical arm and a water jet cutter head, and the water jet cutter head is installed on the water jet cutter mechanical arm; the water jet cutter head is used for cutting the anchor net on the periphery of the anchorage device, cutting the anchorage device at an angle inclined to the roadway top plate and cutting from one side of the roadway top plate to the other side of the roadway top plate so as to form a coherent transverse notch for the anchor net; and the net breaking blade cuts the anchor net to form coherent longitudinal notches, and the continuously formed longitudinal notches continuously break the anchor net between the transverse notches from the middle, so that the anchor net is completely broken. The anchor cutting and net breaking device can comprehensively cut off the anchor on the roadway roof and completely break the anchor net on the roadway roof, the anchor cutting and net breaking efficiency is high, and the problem that the anchor net is hooked after the anchor is cut off can be avoided.

The present invention discloses a cement-soil pile construction device, aiming to provide a cement-soil pile construction device that can reduce manual operation, lower labor intensity, and improve the construction efficiency of tunnel reinforcement. It includes a high-pressure jet grouting pile machine, which comprises a jet grouting drill rod, a vehicle frame, a support tower rod arranged on the vehicle frame, a first guide rail arranged on the support tower rod, a sliding seat sliding along the first guide rail, a sliding seat moving actuator for driving the sliding seat, and a rotary power head arranged on the sliding seat. The jet grouting drill rod includes a drill body and a drill rod tail connected to the upper end of the drill body, and the drill body is composed of several connected drill pipes connected in sequence; a walking vehicle, on which an installation platform is provided, and the high-pressure jet grouting pile machine is installed on the installation platform through the vehicle frame; a drill pipe automatic installation device, which includes a drill pipe placement rack and a manipulator arranged on the installation platform, and the drill pipe placement rack is used for placing the connected drill pipes of the jet grouting drill rod.

The invention provides an end hydraulic support top coal caving system in a fully mechanized top coal caving working face roadway, which comprises an end support unit, a reversed loader and a top breaking device, a shield beam is arranged at the rear end of the end support unit, a coal caving regulation and control mechanism is arranged at the rear end of the shield beam, and a skylight space is arranged on the shield beam; the roof breaking device comprises a roof breaking telescopic jack and a roof breaking end head, the top coal caving support comprises a straddle type base, the bottom end of the roof breaking telescopic jack is installed at the upper end of the straddle type base, and the roof breaking telescopic jack drives the roof breaking end head to penetrate through the skylight neutral position to conduct roof breaking operation. And the straddle type base straddles the reversed loader. According to the roof breaking device, disturbance roof breaking is achieved through the skylight neutral position, the reversed loader penetrates through the straddle type base and is matched with the coal caving regulation and control mechanism to regulate, control and recycle caving objects, the reversed loader penetrates through the straddle type base to convey the caving objects, roof breaking, regulation and control recycling and conveying operation are achieved at the same time, and the overall application effect is good.

The invention relates to a protective device for mining. The method is suitable for safety protection technology. According to the technical scheme, a left stand column and a right stand column are detachably installed at the two ends of a transverse box through connecting assemblies respectively, and a protective net is arranged between the left stand column and the right stand column; the vibration sensor can send vibration information when the protective net is impacted; the protective net adjusting mechanism is used for controlling winding, releasing and fixing of the protective net; the position adjusting mechanism can adjust the position of the driving end of the position adjusting mechanism in the horizontal direction and the vertical direction; the detection mechanism can be driven by the position adjusting mechanism to carry out damage detection on the protective net; the control assembly can start the position adjusting mechanism to drive the detection mechanism to detect the protective net when the vibration information is obtained, and if the protective net damage information is obtained in the detection process, the protective net adjusting mechanism is controlled, so that the left stand column releases a new protective net with the preset length to replace a damaged area, and the safety of the protective net is improved. The right stand column correspondingly winds the damaged protective net.

The invention relates to the technical field of tunnel engineering construction, and discloses an integral construction method for a stacked tunnel, which adopts an integral construction mode that no soil body is left in a crossed and overlapped section of an upper-layer main line tunnel and a lower-layer main line tunnel, and excavation and supporting structures are constructed in the same period, and specifically comprises the following steps: step 1, in a construction preparation stage, firstly, geological investigation is performed on a stacked area; and determining surrounding rock grades (III grade, IV grade and V grade) and geological parameters. The construction method has extremely high geological suitability, dynamic optimization is performed from multiple aspects such as an excavation mode, a support material ratio and monitoring frequency by establishing a surrounding rock grade-construction parameter matching model, and surrounding rock conditions with different stability from grade III to grade V can be flexibly adapted. And the temporary support is dismantled by adopting a segmented unloading technology, the dismantling sequence, the speed and the stress change are strictly controlled, impact on the completed lining structure is avoided, the section size is rechecked through a laser range finder after dismantling, and it is ensured that the construction quality reaches the standard.

The digging and anchoring integrated equipment comprises a machine body, an anchoring device and a temporary supporting device, the anchoring device comprises a working table and a first anchoring and protecting assembly, the working table is arranged on the machine body and can move relative to the machine body in the length direction of the machine body, and the first anchoring and protecting assembly is rotationally connected to the working table in the length direction of the machine body; the temporary supporting device comprises a supporting frame and a sliding top plate, the supporting frame is rotationally connected with the machine body, and a first driver is arranged between the supporting frame and the machine body and used for driving the supporting frame to rotate around the width direction of the machine body relative to the machine body; the sliding top plate is slidably connected with the supporting frame, a second driver is arranged between the supporting frame and the sliding top plate, and the second driver is used for driving the sliding top plate to move towards the roadway head-on direction relative to the supporting frame so as to form advanced temporary supporting. According to the invention, zero empty roof can be realized, integrated and automatic operation of roadway tunneling and anchoring operation is completed, and the construction efficiency and quality are greatly improved.

The utility model discloses a tunnel construction vault deformation monitoring device which comprises a door frame, a fan-shaped supporting frame arranged on the door frame, a supporting column slidably connected to the fan-shaped supporting frame in a fan shape, a fan-shaped measuring table arranged in the fan-shaped supporting frame and a fan-shaped supporting plate fixedly connected to the outer end of the supporting column. The fan-shaped measuring table is provided with a weight sensor corresponding to the supporting column. According to the tunnel construction vault deformation monitoring device, the door frame, the fan-shaped supporting frame, the fan-shaped measuring table, the supporting column and the weight sensor are arranged to support and monitor a vault in a tunnel, data transmission is rapid and accurate, monitoring and early warning of different degrees can be carried out, and the monitoring accuracy is improved. The problem of hysteresis of tunnel vault monitoring by adopting electronic equipment at present is effectively solved.

The invention discloses a supporting device for reinforcing a karst-passing section of a tunnel, and belongs to the technical field of tunnel construction, the supporting device comprises two mounting seats, a connecting seat is arranged between the two mounting seats, and a vault supporting unit and an expansion adjusting unit are arranged above the connecting seat; a plurality of triggering assemblies and a plurality of anchor rod cylinders are arranged on the top side in the vault supporting unit. According to the device, an expansion piece drives a second gear, a rotating shaft and a lead screw to rotate through a rack, a lead screw seat drives a limiting block to move towards the interior of the anchor rod barrel, at the moment, an elastic piece drives the limiting block to move towards the outer side of the anchor rod barrel, and the mechanical meshing range of the anchor rod barrel and the inner wall of the karst section of the tunnel can be expanded; the anti-pulling force and anti-shearing capacity of the anchor rod barrel in the using process are improved in an auxiliary mode, the deeper compression arch effect can be formed, and the risk that a rock mass falls off when a tunnel passes through a karst section is reduced.

The utility model discloses an independent working type dobby dig-bolter, which relates to the technical field of dig-bolter, and comprises a body part, a traveling mechanism, a temporary support part and a rear support part, the body part is arranged on the traveling mechanism, the temporary support part and the rear support part are arranged on the body part, and at least one pair of anchor rod drill units is movably arranged on two sides of the body part. The jumbolter can move in the walking direction and the vertical direction. According to the independent working platform type six-arm driving and bolting machine, the flexibility of supporting operation is high, the top slope anchor rod and anchor cable drilling machines on the left side and the right side can work simultaneously or independently, the temporary supporting system can support two rows of roadway top plates together, and under the condition that the driving and bolting machine body is not moved, the working efficiency is greatly improved. The supporting system can complete supporting operation of two rows of top slope anchor rods and anchor cables, the labor intensity of workers is low, the tunneling and supporting efficiency is greatly improved, the safety is improved, and the requirement of a one-tunneling two-anchoring roadway tunneling rapid supporting process can be met.

The invention belongs to the technical field of tunnel construction, and discloses a supporting and isolating device for tunnel blasting tunneling and a construction method.The supporting and isolating device comprises a support and further comprises supporting mechanisms installed on the support at equal intervals, a water curtain dust falling mechanism is installed on the supporting mechanism close to a tunnel blasting part, and plane water curtain sprayers are installed on the other supporting mechanisms. According to the scheme, the support is arranged in the tunnel, the hydraulic rod is operated to extend to push the sliding block to move downwards, the side plate is made to be close to the inner wall of the tunnel and make contact with the inner wall of the tunnel under limiting of the first connecting rod and the second connecting rod, and then the sliding block cannot move downwards; the hydraulic rod can push the arch-shaped piece to move upwards to make contact with the top of the tunnel and support the tunnel, after supporting is finished, the plane water curtain spray head and the water curtain dust falling mechanism are operated to form a conical water curtain and a plane water curtain correspondingly, expansion pressure in the tunnel can be discharged through the water curtain during blasting, meanwhile, dust is blocked in the water curtain, and dust falling is achieved. Therefore, the operations of supporting and soft isolation of the tunnel are completed.

The invention discloses a roadway folding supporting arch type self-adaptive sliding supporting device and a supporting method thereof, and belongs to the field of roadway rapid supporting. A supporting assembly used for supporting the top of a roadway is arranged at the top of a supporting cross beam, and the supporting cross beam moves upwards through an external lifting assembly; two I-shaped side connecting frames are symmetrically and fixedly connected to the top of the supporting cross beam, fixed rails are fixedly connected to the two sides of an inner cavity of the roadway through bolts, and the supporting assembly comprises first hydraulic rods symmetrically and fixedly connected to the two sides of the supporting cross beam and a second hydraulic rod located in the middle of the top end of the supporting cross beam; according to the roadway folding supporting arch type self-adaptive sliding supporting device and the supporting method thereof, the top of a roadway can be rapidly supported, self-adaptive adjustment can be conducted according to the actual situation of the roadway, the roadway folding supporting arch type self-adaptive sliding supporting device can be flexibly unfolded and tightly attached to the top plate and the side wall of the roadway in the installation process, the supporting speed is increased, and the supporting stability is improved.

The invention belongs to the technical field of roadway supporting, and particularly relates to a roadway supporting and transporting integrated device which comprises a guide rail fixed to the inner top wall of a roadway, a hoisting mechanism and a cantilever mechanism are sequentially arranged on the guide rail, a self-balancing mechanism is connected to the lower portion of the hoisting mechanism and comprises a supporting frame, and a hanging basket and a balance adjusting assembly are arranged on the supporting frame. The hanging basket is used for loading materials, the balance adjusting assembly is used for balancing the hanging basket, the cantilever mechanism is arranged close to the head-on empty roof area, and a supporting mechanism is arranged on the cantilever mechanism and used for temporarily supporting the head-on empty roof area. By means of the transportation-supporting integrated design, multiple optimization of safety, efficiency and economy is achieved, and the method is particularly suitable for roadway tunneling operation under the complex geological condition.

The invention provides a coal mine underground filling mining supporting device, and belongs to the technical field of coal mining, the coal mine underground filling mining supporting device comprises a side edge supporting assembly and a top supporting assembly, the side edge supporting assembly is composed of a supporting frame, the bottom and the top of a reinforcing plate are respectively provided with an adjusting mechanism and a butt joint mechanism, and the top supporting assembly is composed of a supporting beam. The two ends of the supporting beam are movably connected with the side edge supporting assemblies, a detachable supporting mechanism is installed on the top of the supporting beam, and a guiding assembly, a driving assembly and a locking assembly are fixedly installed in the supporting beam. Supporting protection under a coal mine is achieved through the multi-section type supporting device, the stable supporting strength is ensured through the side supports and the top supports, stable folding can be conveniently achieved during transferring, disassembling and assembling, stable supporting of all positions is achieved during unfolding, stable folding in the later period can be conveniently achieved through the arrangement of the guide assemblies, and the supporting effect is good. And in addition, folding of the supporting device is achieved through the driving assembly, and the construction efficiency of the supporting device is improved.

The utility model discloses a tunnel construction protection device, which belongs to the technical field of tunnel construction, and comprises a support unit and a frame structure, the support unit comprises a top support plate and a side support plate, the top support plate and the side support plate carry out omnibearing support protection on the inner wall of a tunnel, and in addition, an adjusting unit is arranged on the frame structure. The height of the top supporting plate can be adjusted through the adjusting unit so as to adapt to tunnels with different heights, the two sides of the frame structure are connected with the side supporting plates through the traction units, the traction units are used for guaranteeing the stability of the side supporting plates, and therefore the supporting and protecting effect on the inner side walls of the tunnels is improved; in addition, the longitudinal reinforcing ribs and the transverse reinforcing ribs are distributed on the inner wall of the top supporting plate and the inner wall of the side supporting plate, the supporting and protecting performance of the top supporting plate and the side supporting plate is improved, and the protecting effect of the protecting device is guaranteed.

The invention discloses an irregular special-shaped roadway multi-point adaptive adjustable two-stage recursion supporting device, and relates to the technical field of mine supporting, the irregular special-shaped roadway multi-point adaptive adjustable two-stage recursion supporting device comprises two first fixing seats arranged left and right, the tops of the two first fixing seats are both fixedly provided with first telescopic rods, and a connecting disc is arranged; the fixing between the connecting disc and the top seats is realized through a plurality of fixing bolts on the connecting disc, the fixing between the two groups of top seats is realized through the connection of the two groups of screw rods I and the two groups of thread bushings, and the distance between the two top seats can be adjusted according to the actual condition in a roadway under the matching of the screw rods I and the thread bushings; the device is suitable for supporting roadways with different sizes; by arranging the first pulleys and the supporting plate, the supporting plate can adapt to roadways with different section shapes through movable connection between the supporting plate and the top base, the supporting performance and effect can be remarkably improved, the multiple first pulleys are movably arranged and can slide on the side wall of the roadway with the special-shaped section, and the supporting device has the advantages of being rapid in supporting, convenient and fast to assemble, higher in supporting performance and the like.