260results about "Protective covers" patented technology

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 invention discloses a surrounding rock comprehensive treatment system which comprises an arc-shaped top, bearing frames are arranged on the two sides of the lower side of the arc-shaped top, bottom frames are arranged on the lower sides of the bearing frames, inserting pieces are arranged on the lower side of the arc-shaped top and the lower sides of the bearing frames, and inserting grooves corresponding to the inserting pieces are formed in the upper sides of the bottom frames and the upper sides of the bearing frames. An auxiliary supporting piece is arranged on the lower side of the bottom frame. The invention relates to the technical field of surrounding rock treatment, through the unique insertion design, the arc-shaped top, the bearing frame and the bottom frame are matched through the insertion pieces and the insertion grooves, rapid and accurate butt joint can be achieved, the insertion pieces are reasonable in structure, the transmission rod, the sleeve and the gear are driven to rotate through the handle, flexible matching with the six-edge block and other components is achieved, and the practicability is high. And the assembly mode can be flexibly adjusted according to the actual specification of the tunnel.

The utility model discloses a large-section hydraulic tunnel main adit intersection excavation support door frame in the technical field of tunnel construction, which comprises a reinforcing door frame and a connecting piece, the reinforcing door frame comprises outer door beams and inner door beams, a semicircular door beam is fixedly connected between the top ends of the inner door beams, and a door frame cross beam is fixedly connected between the tops of the outer door beams; the semicircular door beam is connected with the inner side of the portal cross beam, linear reinforcing ribs are fixedly arranged between the outer door beam and the inner door beam, a plurality of sections of inclined reinforcing ribs are fixedly arranged between the semicircular door beam and the portal cross beam, oblique angle supporting pieces are jointly connected between the tops of the inclined reinforcing ribs, and the oblique angle supporting pieces are fixedly connected between the outer door beam and the portal cross beam at the same time; according to the utility model, the outer door beam can be connected and fixed with the main hole support, the inner door beam and the semicircular door beam are in transition connection with the branch hole bracket, and the outer door beam and the inner door beam are connected through the linear reinforcing rib, so that the support at the intersection forms a whole, the stress is dispersed, and a good support effect is provided.

This invention relates to the field of coal mining technology, and more particularly to a personal protective device (PPE) for underground operations, comprising a drive base, a support frame, a lifting platform, a first protective component, and a second protective component. When in the protective state, the first and second protective components are in contact; when in the working state, they are separated. The advantages are that the cooperation between the drive base and the support frame allows the support frame to move along the length of the drive base; the lifting platform can lift workers to the working position on the tunnel roof, avoiding physical fatigue caused by prolonged overhead work. The first and second protective components can switch between the protective and working states: in the protective state, they are in contact to form a top protective structure, effectively shielding against falling rocks or broken rock fragments from the tunnel roof; in the working state, they are separated to create operating space, facilitating normal roof work for workers.

The utility model discloses a mine tunnel supporting device for lead-zinc mining, and relates to the technical field of mining engineering. The lifting device comprises a bottom plate, a lifting assembly is arranged on the upper surface of the bottom plate, the lifting assembly comprises a supporting column vertically connected to the upper middle portion of the bottom plate, a hollow column is arranged on the peripheral side of the supporting column in a sleeved mode, limiting blocks distributed at equal intervals are arranged on the two inner side walls of the hollow column, and hinged supporting blocks are arranged on the upper edges of the two side walls of the supporting column. The end of a reset spring connected to the side wall of the supporting block in parallel is connected to the side wall of the supporting column, and the upper surface of the supporting block is erected on the lower surface of the limiting block. A supporting assembly is arranged on the upper surface of the hollow column. The lifting assembly is arranged to support the mine tunnels with different heights, the practicability is improved, the supporting assembly is arranged, the stability of the movable plate and the supporting plate is improved, the stability effect of supporting the lead-zinc mine tunnels is improved, the lead-zinc mine tunnels with different sizes are supported, and the practicability is improved.

The utility model relates to the field of subway civil engineering technology, especially a kind of temporary support equipment for subway civil engineering construction. Including two groups of main support plate and several vice support plates, two groups of main support plate are fixedly connected through upper and lower two fixed beams, several vice support plates are arranged between two groups of main support plate, and are slidably connected with fixed beam, folding assembly is arranged between adjacent support plate, two groups of fixed plates are fixedly arranged in main support plate side, fixed plate bottom is fixedly provided with support base, and support assembly is also provided in the side of main support plate close to support base. The utility model is closely attached to the side wall of tunnel by main support plate and several vice support plates, the inner wall of tunnel on the rear side of adjacent two vice support plates is exposed by vice support plate sliding, so that wall behind vice support plate is anchored rod construction, so that local tunnel inner wall is constructed.

The utility model discloses a rock burst supporting mechanism for TBM tunneling, relates to the technical field of TBM construction, and can solve the problem that an existing supporting structure may have a breakdown phenomenon in the protection process. The rock burst supporting mechanism for TBM tunneling comprises an arc-shaped base plate, a plurality of protection tiles arranged on the outer convex face of the arc-shaped base plate and an energy discharging assembly arranged between the protection tiles and the arc-shaped base plate.

The utility model belongs to the field of mine safety, and particularly relates to an anti-falling supporting frame for underground work. According to the technology, a steel wire mesh is included, a plurality of mounting columns are arranged below the steel wire mesh, and the upper end of each mounting column is provided with a driving mechanism used for abutting the steel wire mesh against the top of a mine; the driving mechanism comprises a mounting block, the bottom of the mounting block is connected with the mounting column through a hydraulic cylinder, a supporting plate in vertical sliding fit with the mounting block is arranged above the mounting block, the steel wire mesh is fixed to the top of the supporting plate through a connecting assembly, and a detecting assembly used for detecting supporting force is mounted between the supporting plate and the mounting block. And a gas concentration detector and an audible and visual alarm are mounted on the mounting block. According to the utility model, the steel wire mesh is supported on the mine roof through the driving mechanism, and roof caving accidents can be prevented and eliminated in advance from two aspects of detecting the change of supporting force and the change of gas concentration, so that economic loss and casualties are reduced.

The utility model provides an adjustable portable mining temporary support, and belongs to the technical field of supports. Comprising a screw rod and supporting rods in threaded connection with the two ends of the screw rod, a plurality of holding rods are fixed to the middle of the screw rod, a plurality of floor inserting plates are fixed to the ends of the two supporting rods, the supporting assembly comprises a fixing ring fixed to the outer wall of the supporting rod located on the lower portion, and a sliding ring is arranged below the fixing ring; and the sliding ring movably sleeves the outer wall of the supporting rod. Through the arrangement of the fixed ring, the sliding ring and the Z-shaped rod, in the using process, the Z-shaped rod and the floor inserting plate are in contact with the ground for supporting at the same time, the sliding ring is clamped on the surface of the floor inserting plate through the first positioning groove, a constructor can step on the Z-shaped rod to stabilize the supporting rod and prevent the supporting rod from inclining and rotating, the supporting rod does not need to be supported by multiple persons, and the operation process is simplified; the Z-shaped rods are synchronously supported on the ground, the bottom stress area of the supporting rods is enlarged, the supporting rods are prevented from sinking into the ground, and the supporting stability is enhanced.

The invention relates to the technical field of coal mine tunnel supporting, and discloses a supporting device for a mine fracture structure, which comprises a bracket, a rotating support plate rotationally mounted on the bracket and a through groove formed in the side wall of the bracket, and further comprises a supporting air bag fixedly mounted on the bracket and the rotating support plate, a driving part is arranged at the lower end of the rotating support plate, and a driving part is arranged at the lower end of the supporting air bag; the driving part comprises a mounting block which is fixedly mounted on the side wall of the support, an air cylinder is hinged to the mounting block, and the end, away from the mounting block, of the air cylinder is hinged to the rotating supporting plate. Through cooperation of the supporting air bag and the transfer part, when waste rocks fall off from a top plate, a cavity can appear, the waste rocks enter the transfer part through the guide part, gas in the transfer part enters the supporting air bag through the gas conveying pipe, the supporting air bag moves towards the cavity, and gas accumulated in the cavity can be extruded out; the gas sensor installed near the supporting structure can sense the change of the gas, so that the gas is prevented from being accumulated in the cavity, and potential safety hazards are avoided.

The utility model discloses a flexible protective device for treating a collapsed cavity at the top of a tunnel, which comprises at least two flexible protective nets which are arranged from top to bottom and connected to the inner wall of the collapsed cavity, and the aperture of the lower part of each flexible protective net is smaller than that of the upper part of each flexible protective net. The protective net is composed of a steel wire rope protective net body and a twisted-pair hexagonal flexible net body, the steel wire rope protective net body is formed by rhombic weaving of Galfan coating steel wire ropes, and the twisted-pair hexagonal flexible net body is formed by weaving of A-grade Galfan coating steel wires, overlaps the edge of the steel wire rope protective net body by 10-20 cm and is tied. The steel wire rope protective net is formed by splicing meshes of different specifications, splicing follows a specific principle, and steel wire rope buckles are used for connection. The device is further provided with anchor rods, spring hooks and other components, and the number and size of the components are determined according to the three-dimensional data of the collapsed cavity. Compared with a traditional protective net, the device can effectively absorb rockfall energy, is good in buffering effect, high in adaptability to different collapse cavities, easy and convenient to install and capable of reducing construction risks and guaranteeing tunnel construction and operation safety.

The invention relates to an auxiliary mounting tool and method for a flexible track mechanism for a coal mine, the auxiliary mounting tool comprises bases arranged on two opposite sides and moving blocks arranged on the bases on the two sides in a sliding mode, each moving block is in threaded connection with an adjusting piece, and one end of each adjusting piece penetrates through the corresponding moving block. The auxiliary installation tool further comprises blocking parts which are arranged on the bases on the sides and abut against one ends of the adjusting pieces on the corresponding sides and connecting rods connected between the moving blocks on the two sides, the adjusting pieces are rotated to drive the moving blocks to slide in the sliding direction, and then the connecting rods are made to be away from or close to the blocking parts. When the auxiliary mounting tool is used for mounting the crawler belt, the labor intensity can be greatly reduced, and the mounting efficiency of the flexible crawler belt mechanism is improved.

The utility model discloses a coal mine large-span chamber reinforced supporting structure which comprises bottom plates, supporting columns, an upper arch-shaped supporting plate, supporting blocks, a lower arch-shaped supporting plate, supporting grooves, a stress dispersion stabilizing structure and an anchor rod supporting structure, the supporting columns are fixed to the top ends of the left bottom plate and the right bottom plate respectively, and the upper arch-shaped supporting plate is installed at the top ends of the left supporting column and the right supporting column. The supporting blocks are fixed to the upper portions of the inner sides of the supporting columns respectively, the lower arch-shaped supporting plate is fixed to the top ends of the left supporting block and the right supporting block, the supporting grooves are formed between the upper arch-shaped supporting plate and the lower arch-shaped supporting plate, and the stress dispersion stabilizing structures are installed in the front supporting groove and the rear supporting groove. The anchor rod supporting structures are installed on the left portion and the right portion of the stress dispersion stabilizing structure correspondingly. According to the utility model, the connection strengthening of the arched support plate for supporting the top is beneficial to dispersing stress and improving the overall stability.

The invention discloses a detachable tunnel face supporting and shoring connection integrated device, and belongs to the technical field of tunnel construction.The device comprises a primary shoring structure, a plurality of supporting modules are distributed in the circumferential direction of the primary shoring structure at intervals, and the multiple supporting modules are installed between the primary shoring structure and a tunnel face in parallel; the supporting module comprises a telescopic folding assembly, a hydraulic pump, a supporting beam and a buffering cushion, the supporting module supports the tunnel face in the longitudinal direction of the tunnel, the telescopic folding assembly can stretch out and draw back in the longitudinal direction of the tunnel, one end of the telescopic folding assembly is connected with the primary supporting structure, and the other end of the telescopic folding assembly is connected with the hydraulic pump. The output end of the hydraulic pump faces one side of the tunnel face and is connected to one end of the supporting beam. The tunnel face can be temporarily supported, the instability collapse risk of the surrounding rock of the tunnel face is resisted, meanwhile, the surrounding rock deformation is controlled, and the subsequent excavation operation safety and the long-term stability of the tunnel structure are ensured.

The invention provides digging and anchoring integrated equipment for a coal mine. The digging and anchoring integrated equipment comprises a machine body, a supporting device and an adjusting assembly. The supporting device comprises a supporting frame and a protection plate assembly, the supporting frame is connected with the machine body and can rotate around a straight line where the width direction of the machine body is located relative to the machine body, the supporting frame comprises a first frame body and a second frame body which are connected, the second frame body can rotate around a straight line where the length direction of the machine body is located relative to the first frame body, and the protection plate assembly is arranged on the second frame body; the adjusting assembly comprises a first driver, the output end of the first driver is in transmission connection with the second frame body, and the first driver is used for driving the second frame body to rotate relative to the first frame body so that the protection plate assembly can adapt to the inclination angle of the roadway roof. Through cooperative work of the machine body, the supporting device and the adjusting assembly, efficient integration of tunneling and supporting is achieved, the equipment can flexibly adapt to various complex conditions of a coal mine roadway, and a safer and more efficient solution is provided for coal mining.

The application discloses a tunnel surrounding rock reinforcing device, which comprises an advanced pipe shed, which is arranged on the top of a tunnel face and is fixedly connected with the top arch part of an installed primary support, and a leading crescent cavity is arranged below the advanced pipe shed; an advanced top arch piece is arranged at the bottom of the leading crescent cavity and is matched with the top arch part of the primary support; an air bag is arranged above the advanced top arch piece and fills the leading crescent cavity, and an automatic exhaust valve is arranged on the air bag; a plurality of telescopic columns are arranged on the two sides of the advanced top arch piece along the direction of the tunnel, and the upper end of each telescopic column is detachably connected with the advanced top arch piece, and the lower end is fixedly arranged on a mounting base. The advanced pipe shed, the air bag and the advanced top arch piece are matched with each other, so that the supporting effect is effectively improved.

The invention discloses a safety device for tunnel construction, and belongs to the technical field of tunnel construction. The problem that an existing tunnel construction safety supporting device is prone to breakage and damage when collided by falling stones is solved. The device comprises a fixing base, four connecting rods are arranged on the bottom side of the fixing base, supporting columns are arranged at the bottom ends of the connecting rods, and a lifting assembly is arranged between each supporting column and the corresponding connecting rod; a through groove is formed in the top end of the fixing base, sliding ways are arranged at the four ends of the bottom, sliding blocks are slidably arranged in the sliding ways, and first springs fixedly connected with the sliding blocks are fixed to the two ends in the sliding ways. A supporting plate is arranged at the top end of the vertical frame, a first fixing column is arranged at the bottom end, and a guide assembly is arranged between the first fixing column and the fixing base; a pair of second fixing columns are symmetrically arranged at the two ends of the bottom side in the fixing base, the top ends of the sliding blocks extend out of the sliding ways and are fixedly connected with the second fixing columns, and multiple sets of first fixing arms are connected between the first fixing columns and the second fixing columns through rotating shafts. The device can effectively buffer gravel impact and improve anti-collision protection and safety.

The invention relates to the field of anti-seismic devices, in particular to a deformable anti-seismic device suitable for a tunnel structure. The anti-seismic structure comprises a base and an inner arch wall arranged on the base, an outer arch wall located on the outer side of the inner arch wall is further arranged on the base, and a plurality of anti-seismic mechanisms are arranged between the outer arch wall and the inner arch wall; the outer arch wall is composed of a plurality of outer arc-shaped units arranged at equal intervals, the inner arch wall is composed of a plurality of inner arc-shaped units arranged at equal intervals, anti-seismic fillers are arranged between the adjacent outer arc-shaped units and between the adjacent inner arc-shaped units, and the two ends of the bottoms of the outer arc-shaped units are connected with the base through outer anti-seismic buttresses. The two ends of the bottom of the inner arc-shaped unit are connected with the base through inner anti-seismic buttresses. During use, gaps between the outer arc-shaped units and gaps between the inner arc-shaped units are connected through anti-seismic filling, so that the inner arch wall and the outer arch wall can adapt to vibration transmission and absorption at various angles, the inner arch wall and the outer arch wall are connected through the anti-seismic buttresses, and the absorption effect on complex vibration is further improved.

The application relates to the field of TBM (Tunnel Boring Machine) driving temporary support, in particular to a TBM temporary support extension structure and a using method thereof. In view of the problems of limited support range and low space utilization of the temporary support extension structure in the prior art, the following scheme is provided, which comprises a driving cutter head, a protective shield, a main beam, a first-stage support, a second-stage support, a first telescopic hydraulic cylinder and a second telescopic hydraulic cylinder. The first-stage support is rotationally connected with the protective shield, the second-stage support is slidably assembled on the first-stage support, the first telescopic hydraulic cylinder and the second telescopic hydraulic cylinder are cooperatively matched, the rotation of the first-stage support and the unfolding and contraction actions of the second-stage support are realized, the structure can pass through a narrow space in a contracted state, and a large-area support surface is formed after unfolding, thereby solving the problems of limited support range and poor adaptability of the traditional support. The hydraulic cylinders are cooperatively matched to realize rapid extension and positioning, the application is suitable for complex geological conditions such as mine tunnels, sufficient time is reserved for anchor support operation, and the efficiency of roadway driving is effectively improved.

The invention discloses a temporary safety supporting frame for a coal mine tunnel, which relates to the supporting technology of the coal mine tunnel, and comprises supporting upright posts which are symmetrically distributed left and right, and wheel set brackets which are fixedly mounted at the bottom ends of the supporting upright posts, and moving wheel sets are rotationally arranged in the wheel set brackets; an adjusting mechanism is arranged at the upper end of the supporting stand column and comprises an extension stand column, and an extension transverse frame is fixedly installed at the top end of the extension stand column. An anti-falling holding frame is fixedly arranged outside the inner end of the right extension transverse frame; a protection mechanism is arranged at the upper end of the supporting stand column and comprises a protection display plate. According to the temporary safety supporting frame for the coal mine tunnel, the height and the width are adjusted through the extension stand columns above the supporting stand columns and the extension transverse frames, meanwhile, the locking arc plate descends to lock the moving wheel sets, the top wall of the coal mine tunnel is protected through the protection display plate and the adaptive display plate, and the safety of supporting in the coal mine tunnel is improved.

The utility model discloses a water-preserved coal mining supporting mechanism which comprises a supporting frame body, a plurality of connecting cross rods arranged at equal intervals are arranged on the inner side of the supporting frame body, two supporting columns are fixedly connected to the upper end faces of the connecting cross rods, and X-shaped supporting plates are connected to the upper end faces of the supporting columns. The upper end face of the X-shaped supporting plate is slidably connected with telescopic rods distributed in an array mode, and first springs are connected between the telescopic rods and the X-shaped supporting plate. The telescopic rod and the first spring are arranged in the supporting frame body, elastic deformation of the first spring can be used for buffering pressure of a top plate, supporting force is automatically adjusted to adapt to different top plate pressure environments, meanwhile, the X-shaped supporting plate moves under the pressure of the top plate to drive related parts to move, and the second spring is adjusted in a buffering mode. Linkage adjustment of the bottom structure according to the pressure change of the top plate is achieved, the stability of the supporting frame under the complex pressure condition is enhanced, the safety risk is reduced, and the safety and efficiency of coal mining work are improved.

The utility model relates to the technical field of heading machines, and discloses a sheet metal rack convenient to disassemble and assemble, which adopts a notch guide type mounting butt joint mode, the lower part of a support ring frame is movably embedded with a butt joint sliding chute arranged on the side of a rack base, and a cross rod connecting block is embedded on the upper part of the support ring frame in a sliding manner. A notch guide structure is arranged at the mounting butt joint position of each component, during mounting, mounting auxiliary guide and preliminary supporting limiting can be carried out on the butt joint components through notch butt joint limiting, an operator can be assisted in conveniently and rapidly completing the combination and assembly work of the rack, and through butt joint assistance of a butt joint sliding groove, a mounting ring groove and a cross rod mounting notch, the assembly efficiency is greatly improved. During installation, the distribution positions of the supporting ring frames and the reinforcing cross rods can be flexibly adjusted according to the actual equipment distribution of the heading machine through sliding adjustment in cooperation with alignment of the screw holes, the adjustment operation is convenient and flexible, the connecting pieces do not need to be separated and disassembled in the operation process, and the use flexibility and the disassembly and assembly convenience of the rack are greatly improved.

The utility model provides a bracket sliding bottom plate for an underground coal mine, and belongs to the technical field of machinery. According to the structure, a supporting table is fixedly connected to the bottom end of a hydraulic cylinder, a bottom plate is located on the lower side of the supporting table, a connecting assembly is arranged on the side portion of the bottom plate and comprises a notch, an electric cylinder is fixedly connected to the inner wall of the notch, a positioning block is connected to the free end of the electric cylinder, and the upper portion of the positioning block is located on the side of the supporting table; a strip-shaped blind hole allowing the upper portion of the positioning block to be inserted therein is formed in the side end of the supporting table, a sliding way is arranged at the position, located above the blind hole, of the side end of the supporting table, a limiting hook is connected into the sliding way in a sliding mode, and the limiting hook hooks the outer side of the positioning block. The bottom plate and the supporting table are jointly used as a supporting structure, and the supporting state or the moving state can be switched through the hydraulic cylinder; on the basis, a clutch mechanism is designed between the bottom plate and the supporting table, and replacement of the bottom plate is facilitated.

The utility model relates to the related technical field of coal mine tunneling supporting, in particular to a coal mine tunneling supporting device which comprises a protection plate and a combination mechanism, and the combination mechanism is arranged on one side of the surface of the protection plate. According to the coal mine tunneling supporting device, through the arrangement of a combined mechanism, firstly, connecting hooks are installed in a first threaded groove and a second threaded groove, the two sides of a protection net are fixed to the connecting hooks of the first threaded groove and the second threaded groove correspondingly, the device is moved to the supporting position through a crawler belt, and then a first air cylinder and a second air cylinder are started; a first air cylinder drives a ground contact plate to make contact with the ground, then the overall supporting capacity of the whole arch structure is improved, part of assemblies are protected, meanwhile, a second air cylinder drives a supporting plate to move, when the supporting plate is attached to the two sides of a mine hole, supporting is completed, and meanwhile the supporting plate moves to drive a connecting hook on a second threaded groove to move; and therefore, the second air cylinder and other parts of assemblies are protected, and the stability during supporting is improved.

The invention aims at disclosing an advancing type mining working face anchor protection device and technology based on a reversed loader, and relates to the technical field of coal mine roadway tunneling, the advancing type mining working face anchor protection device comprises a reversed loader assembly, a translation assembly, a milling and excavating assembly, a temporary supporting assembly and an anchor rod assembly; the milling and excavating assembly is close to a roadway side, the anchor rod assembly is close to a roadway gob, and the temporary supporting assembly is located between the milling and excavating assembly and the anchor rod assembly. When the temporary supporting assembly supports the top of the roadway, the milling and excavating assembly or the anchor rod assembly works; the milling and digging assembly comprises a first base, a first rotating assembly, a first pitching arm and a milling and digging head; the device has the beneficial effects that the milling and digging assembly is close to the side of a roadway and mills and digs arc angles of two vertex angles of the side of the roadway formed by the cutting roller, the roadway is cleaned, coal at the arc angles is fully utilized, waste is avoided, the working efficiency is improved, and the working efficiency is improved. And the anchor rod assembly is close to the roadway goaf and is used for anchoring and protecting the top and the sides of the roadway.

The application provides a temporary support oil cylinder synchronous control method and device, electronic equipment and medium, comprising: obtaining the first pressure corresponding to the first oil cylinder of the temporary support and the first displacement corresponding to the piston of the first oil cylinder, the second pressure corresponding to the second oil cylinder and the second displacement corresponding to the piston of the second oil cylinder; determining whether the first oil cylinder and the second oil cylinder are synchronous according to the first displacement, the first pressure, the second displacement and the second pressure; if the first oil cylinder and the second oil cylinder are not synchronous, determining the first control parameter of the first electromagnetic valve corresponding to the first oil cylinder and the second control parameter of the second electromagnetic valve corresponding to the second oil cylinder according to the first displacement and the second displacement; controlling the first electromagnetic valve based on the first control parameter and controlling the second electromagnetic valve based on the second control parameter. Thus, the displacement of the first oil cylinder and the second oil cylinder can be adjusted in real time, the displacement consistency of the first oil cylinder and the second oil cylinder is ensured, and the support stability in the tunneling process is improved.