141results about How to "Expand the range of support" patented technology

The invention discloses a sandwich arch suitable for surrounding rock support of a high-stress soft rock tunnel and a construction method of the sandwich arch. The sandwich arch comprises a surrounding rock outer ring bearing arch, an interlayer anchor rod reinforcing arch and a surrounding rock inner ring bearing arch, wherein the surrounding rock outer ring bearing arch, the interlayer anchor rod reinforcing arch and the surrounding rock inner ring bearing arch are anchored together by anchoring cable bundles to finally form an integral anchor shell sandwich arch support structure. The surrounding rock outer ring bearing arch is characterized in that a deep surrounding rock mass in front of a tunneling head is crushed according to a deep hole pre-splitting blasting method, and grouting is carried out to re-consolidate a deep fractured rock body and a crushed rock layer to form a crushed stone reinforced arch. The interlayer anchor rod reinforcing arch is characterized in that anchorrods are densely and evenly installed in a surrounding rock shallow rock layer to form a uniform-thickness layer compression zone. The surrounding rock inner ring bearing arch is a high-strength grating steel arched frame and concrete built arched bracket. The sandwich arch significantly improves the bearing capacity of surrounding rock deep and shallow rock masses, is high in supporting strengthand large in range, provides a reliable stress foundation for the anchoring cable bundles, and can realize the long-term stability of surrounding rock of the high-stress soft rock tunnel.

The invention relates to the technical field of machining equipment, in particular to a multi-station machining platform which comprises a tool unit, a rotating stand unit, a driving unit and a supporting unit. The tool unit comprises a tool base plate, swing connecting plates, rotating shafts, a bracket and a first servo motor; the lower portion of the tool base plate is fixedly connected with the two swing connecting plates, and the two swing connecting plates are movably connected to the two ends of the bracket through the two rotating shafts; and an output shaft of the first servo motor fixed on the bracket is fixedly connected with one rotating shaft. According to the multi-station machining platform, the driving unit capable of driving the tool unit to rotate is arranged in the multi-station machining platform, so that the tool unit drives a to-be-machined workpiece to be subjected to horizontal corner adjustment, and the to-be-machined workpiece can conveniently move to the positions of different machining machines to be machined.

A mine grouting anchor cable supporting method comprises the steps of manufacturing a grouting anchor cable tie, wherein the grouting anchor cable tie is composed of multiple anchor cable bodies, a conical grouting stopping plug, a tray, a lock, an end anchor grouting stopping plug, an anchor cable fixing frame, a tightening ring and the like. An anchor cable body comprises an end anchor grouting anchor cable body, a full-anchor grouting anchor cable body and an exhaust grouting anchor cable body, and the three grouting anchor cable bodies are combined to replace a common anchor cable body; 2, installing and supporting the grouting anchor cable tie, wherein the end anchor grouting stopping plug is sleeved with the end anchor section of the anchor cable tie, the grouting anchor cable tie is fed into a drilled hole, a barb hook hooks the wall of the hole, and the conical grouting stopping plug, the tray and the lock are sequentially installed; grouting of the end anchor section is performed by means of the end anchor grouting cable body, and air is exhausted through the full-anchor grouting anchor cable body; after grouting of the end anchor section is solidified, the lock is used for tensioning and pre-tightening the anchor cable tie; the full-anchor grouting anchor cable body is used for performing grouting on the full anchor section, and the exhaust grouting anchor cable body is used for exhausting air. The method is applicable to ultra-soft cracking and deep high stress roadway supporting, and can achieve ultra-long deep strong anchoring. The cable body is provided with a core tube so that end anchoring, full-anchoring grouting and air exhausting can be achieved, and construction is greatly simplified.

The invention relates to a moxa-moxibustion box comprising a cylindrical housing and a holder arranged in the housing; the housing is at least divided into an upper cavity positioned in the most top of the housing and a lower cavity positioned in the most bottom of the housing; the holder is provided with through holes, or is a netted structure, or a hollow structure; the upper and lower cavities are mutually connected. The moxa-moxibustion box is simple in structure, low in cost, better in moxibustion effect, and stronger in practical value.

The invention relates to the technical field of display, and discloses a straight-down backlight source and a display device. The straight-down backlight source comprises a back plate and an optical film which are oppositely arranged, and a supporting structure located between the back plate and the optical film. The supporting structure is supported between the back plate and the optical film, the first end, used for supporting the optical film, in the supporting structure is provided with at least two elastic bending structures, one end of each elastic bending structure is connected with the supporting structure, the other end of each elastic bending structure stretches out of the supporting structure and stretches in the direction away from the axial line of the supporting structure, and the surface, facing the optical film, of each elastic bending structure abuts against the optical film. By the adoption of the straight-down backlight source, the stressed area of a display panel receiving supporting force and used in cooperation with the straight-down backlight source is larger, stress points are more evenly distributed, and therefore deformation of the display panel used in cooperation with the straight-down backlight source can be effectively avoided.

The invention discloses a chassis secondary positioning device which comprises a bottom plate, an X-axis positioning assembly mounted on the bottom plate, an X-axis limiting plate, a Y-axis positioning assembly and an Y-axis limiting plate, wherein the X-axis positioning assembly comprises an X-axis clamping plate which is opposite to the X-axis limiting plate; the Y-axis positioning assembly comprises a Y-axis clamping plate which is opposite to the Y-axis limiting plate; a first supporting rod, a second supporting rod and a third supporting rod are further arranged on the bottom plate; the first supporting rod, the second supporting rod and the third supporting rod are positioned between the X-axis clamping plate and the X-axis limiting plate; and the first supporting rod, the second supporting rod and the third supporting rod are positioned between the Y-axis clamping plate and the Y-axis limiting plate. According to the chassis secondary positioning device, the three supporting rods are arranged for placing chassis without occupying space, so that an unloading clamping claw is conveniently avoided; and meanwhile, the supporting range is expanded by virtue of the design of the three supporting rods, so that chassis with various dimensions can be placed; and the clamping plate is driven by an air cylinder to position, so that the precision is high.

The invention discloses a reinforcing method and a supporting assembly for an integrated cooker smoke exhaust pipe. The reinforcing method includes the following steps that (a), clamping protection plates are assembled; (b), a reinforcing position is determined; (c), side clamping rods are mounted; (d), upper and lower clamping protection is carried out; and (e), left and right connection is carried out. The supporting assembly comprises a mounting plate, a supporting block is arranged on the mounting plate, a fixing screw is arranged on the supporting block, and supporting nuts and the clamping protection plates are connected to the fixing screw. The clamping protection plates comprise telescopic plates and arc-shaped protection plates, the arc-shaped protection plates are arranged on thetelescopic plates, the supporting nuts support the telescopic plates, and the side clamping rod are arranged between the arc-shaped protection plates. The reinforcing method is easy to operate, low in difficulty, wide in reinforcing range, good in reinforcing effect and easy to adjust, the reinforcing quality can be effectively guaranteed, the problem caused by the fact that the hole size of a kitchen cabinet plate is not matched with the pipe diameter of the smoke exhaust pipe is solved, and the supporting assembly is novel in structure, capable of being flexibly assembled on site, high in adaptability, good in supporting effect and reliable to use.

The invention discloses a steel structure engineering bracket capable of preventing displacement and an operation method thereof. The bracket comprises a mounting plate, a plurality of groups of limiting rods are laterally symmetrically arranged on the outer side of the top of the mounting plate, the tops of the limiting rods are fixedly connected with sliding blocks, and the top of the mounting plate is movably connected with a supporting plate through a plurality of groups of damping shock absorbers and springs which are arranged at equal intervals. The bracket is provided with third mounting holes and a through groove, different included angles can be formed between a clamping base and a steel structure, and connection between steel structures of different structures and types and the clamping base is more stable. The damping shock absorbers and the springs are arranged so that the damping effect can be achieved. Sliding grooves, second sleeves, the sliding blocks and the limiting rods are arranged, so that the vibration amplitude in the left-right direction and the up-down direction of the supporting plate can be limited. First sleeves and anchor rods are arranged, people can also make the anchor rods penetrate out of the inner surfaces of the first sleeves in advance, and then the anchor rods and the first sleeves are connected through fastening screws, so that the overallstability of the bracket is further improved.

The invention discloses a layered inner lifting unloading type ground anchor rod structure and a construction method thereof, and belongs to the field of supporting and retaining engineering. The layered inner lifting unloading type ground anchor rod support structure comprises lifting unloading steel pipes, anchor rods and an outer tension anchor structure. The lifting unloading steel pipes are composed of first type sleeves, second type sleeves and circular ring steel sheets. The anchor rods are composed of free sections, anchoring sections and stop grouting plugs. The outer tension anchor structure is composed of steel strands, a fixed pulley, a concrete pit, an anchorage pier and twine tighteners. The end, with the circular ring steel sheets, of the lifting unloading steel pipes are arranged on the free sections of the anchor rods in a sleeving mode, and are placed in a stable soil layer. The other ends of the lifting unloading steel pipes are connected with the outer tension anchor structure through the steel strands, and are fixed to the outer surface of a side slope (or a foundation pit). The layered inner lifting unloading type ground anchor rod structure has a simple structure and high bearing capacity, can fully utilize the stable soil layer and the free sections of the anchor rods, and solves the problems that a support structure is difficult to construct and the support structure is prone to crossing a building restriction line due to the face that an current high slope or certain special foundation pits cannot be subjected to piling or pore-forming.

The invention discloses a digging and anchoring integrated machine suitable for a complex geological roadway. The digging and anchoring integrated machine comprises a rack, a cutting device, a crawler walking device, an anchor rod drilling machine, a temporary supporting device, a scraper conveying device, a scraper chain compensation device, an operation platform, a wet dust collector, a drilling machine mounting seat and a linear driving assembly. The anchor rod drilling machine of the digging and anchoring integrated machine can support the top of the roadway in a large range, so that the stability of the roadway is improved, and the safety of a coal mine is facilitated.

The invention provides a supporting and filling integrated six-column hydraulic bracket, comprising a protection side, a front top beam, a rear top beam, a front stand column, a middle stand column, a rear stand column, an upper connecting rod, a front connecting rod, a rear connecting rod and a base, wherein the lower end of the upper connecting rod is located in front of the upper end of the upper connecting rod; the tail end of the base is hinged with a double-stage retractable tamping mechanism; the double-stage retractable tamping mechanism comprises a swing beam body, a first-stage retractable beam, a second-stage retractable beam and a swing beam body jack; the front end of a cover plate of the second-stage retractable beam is hinged with one end of a waste rock baffling plate; and a waste rock jack is hinged between the middle of the waste rock baffling plate and the cover plate of the second-stage retractable beam. The double-stage tamping mechanism hinged with the back end of the base can be used for rotating the whole mechanism for an angle under the effect of the swing beam body jack to tamp different positions; the first-stage retractable beam and the second-stage retractable beam can stretch out for a certain length under the effect of respective jacks to realize the tamping of different depths; and the waste rock baffling plate is hinged with the front end of the cover plate of the second-stage retractable beam so that waste rocks dropping from a supporting plate can be baffled by swinging the waste rock baffling plate front and back, and the normal operation of the tamping mechanism is guaranteed.

The invention discloses a method for preventing rib spalling of a coal wall and roof falling in a head face. The method comprises the following steps of: (1) reducing a beam-end distance of a hydraulic support to be less than 240mm, even 0mm, and reserving a top coal layer with thickness being 200-300mm when a coal mining machine mines coal; and (2) leaning a plate surface of a rib-supporting plate of the hydraulic support against the coal wall to realize surface contact between the rib-supporting plate and the coal wall. By adopting the steps, occurrences of the rib spalling and the roof falling in the head face can be avoided effectively. The invention also provides the hydraulic support for preventing rib spalling of the coal wall and the roof falling in the head face. The hydraulic support comprises a telescopic beam, wherein a gear shaper is arranged at a front end of the telescopic beam; the telescopic beam is hinged with an oscillating bar of which the other end is hinged with the primary rib-supporting plate; and a linear driving mechanism for driving the primary rib-supporting plate to lean against the coal wall is hinged with the telescopic beam. By the structure of the hydraulic support, the surface contact between the primary rib-supporting plate and the coal wall can be realized, so that the rib spalling can be prevented; and a distance between the gear shaper of the telescopic beam and the coal wall is less than 240mm, so that the roof falling in the head face can be prevented.

The invention relates to a soft rock roadway bottom board anchoring, grouting and reinforcing method. Grouting hole channels going deep into a stable rock stratum are downwards formed in the surface of a roadway bottom board, every at least three adjacent grouting hole channels in the same row of grouting hole channels serve as grouting units of the roadway bottom board, grouting anchor cable bundles are placed in the grouting units, and deep-layer-end anchoring, grouting and fixation and shallow-layer periphery grouting and fixation of the roadway bottom board are respectively executed in each grouting anchor cable bundle. The method overcomes the shortcoming that during deep soft rock roadway bottom board treatment in the prior art, a supporting range is small, the strength is low and the long-term stability requirement of a deep soft rock roadway bottom board coal and rock mass is difficultly met.

The invention discloses a truss supporting system based on a green steel structure building and a welding method thereof, and relates to the technical field of steel structure buildings. The truss supporting system comprises a connecting plate and a fixing plate fixedly connected to one side of the connecting plate through a cross beam, wherein a connecting and fixing mechanism is arranged on the surface of the cross beam. According to the truss supporting system based on the green steel structure building and the welding method thereof, the bottom of a truss can be stably supported by arranging a side face fixing assembly and a supporting mechanism, every two adjacent standard sections are clamped and installed through a connecting assembly, a plurality of screws do not need to be used for fixing, operation is convenient, and the problem that the stability is affected due to position deviation between the standard sections caused by looseness generated by screw rusting is solved; and an adjusting mechanism is arranged on the standard section at the topmost part and can be finely adjusted according to the height of the truss, so that the supporting range of the truss is enlarged, remarkable supporting pressure resistance is achieved, and a foundation is laid for subsequent normal use of the truss.

The invention relates to an anchor cable sleeving and taking machine adopting a shield method for tunnel crossing anchor cable construction. The anchor cable sleeving and taking machine comprises a soil layer, a first spring and balls. An anchor cable penetrates through the soil layer. A first base is arranged on one side of the soil layer. Supporting leg grooves are formed in the bottoms of the two sides of the longer side of the first base. Supporting legs are rotatably connected in the supporting leg grooves. Blocking rod grooves are formed in one side, close to the supporting legs, of thefirst base. The anchor cable sleeving and taking machine adopting the shield method for tunnel crossing anchor cable construction is provided with shearing frames. When an anchor cable groove completely sleeves the anchor cable at a tunnel construction site, a hydraulic motor injects hydraulic oil through a first oil groove, so that the hydraulic oil pushes a top plate to move outwards towards a top plate groove, and the top plate drives the shearing frames to move towards the anchor cable. When the shearing frames on the upper and lower sides move simultaneously towards the anchor cable, shearing force is formed between the shearing frames to shear the anchor cable, and meanwhile, the shearing frames prevent the anchor cable from moving out of the anchor cable groove, the anchor cable isdirectly taken out through an anchor cable sleeve, and grouting or injection filling is avoided.

The invention belongs to the technical field of containers, and particularly relates to an anti-rollover container. The anti-rollover container comprises a box body; at least four sliding grooves areformed in two sides of a bottom plate of the box body; a transverse positioning rod is arranged in each sliding groove; and each transverse positioning rod comprises a hinged part and a sliding part;and a positioning reference plane can be determined by arranging extractable transverse positioning rods on the side parts of the bottom plate, vertical positioning rods attached to the side wall of the box body can be arranged on the transverse positioning rods through bolts, then the vertical positioning rods are fixed through supporting inclined rods hinged at the distal ends of the transversepositioning rods, so that a triangular stable support is formed, and the pulling-out distance of the transverse positioning rods can be adjusted according to the weight of the box body, namely, a bottom edge of a triangle is increased, the heights of the vertical positioning rods can be increased, namely, a right-angle edge of the triangle is increased, the supporting range of the box body is greatly increased, and the installation process is simple and convenient.

The invention discloses a steam ironing machine with a reversible ironing plate. The machine solves the problem of low stability of the ironing plate. The technological scheme which solves the problem mainly comprises a main body, the ironing plate, and a supporting frame disposed on the main body, wherein the front face of the ironing plate is an ironing face; the supporting frame is in rotatable connection with a first connecting part and a second connecting part; joints between the first connecting part and the second connecting part and the supporting frame are located on two sides of the supporting frame; the first connecting part is in rotatable connection with the back face of the ironing plate; when the ironing plate stays at a first installation state, the first connecting part is stored between the ironing plate and the supporting frame; the second connecting part is connected to the first connecting part and limits rotation of the first connecting part relative to the supporting frame; and the first connecting part and the second connecting part support the ironing plate when the ironing plate stays at a second installation state. According to the invention, through mutual coordination and mutual limiting of the first connecting part and the second connecting part, stability of the ironing plate at the first installation state and the second installation state can be ensured.

The invention discloses an operation platform for cooker panel machining. The operation platform comprises a workbench, and a pushing mechanism, supporting bases and a stroke air cylinder are arrangedon the workbench; a U-shaped sliding plate is connected to one end of the pushing mechanism, vertical frames are slidably connected to the workbench, and transmission rods are arranged between the vertical frames and the U-shaped sliding plate; a clamping air cylinder and a T-shaped swinging base are connected to each vertical frame, each clamping air cylinder is connected with the top end of thecorresponding T-shaped swinging base, and an upper pressing plate is arranged on each T-shaped swinging base; a supporting clamping plate is arranged on one side of each vertical frame; a pushing plate is connected to the stroke air cylinder; and a supporting rod is arranged on each supporting base in a penetrating mode, a supporting flat plate is arranged between the supporting rods, and elasticsupporting bases are symmetrically distributed on the supporting flat plate. According to the operation platform for cooker panel machining, the structure is novel, adjustment is flexible, the operation platform can be suitable for machining operation of cooker panels with different sizes, the application range is wide, arrangement is steady, clamping and fixing are reliable, and machining operation is convenient.

The invention discloses contaminated soil sampling equipment, and relates to the technical field of soil sampling devices. The equipment comprises a base, a mounting frame, an L-shaped block, a compression spring, a fixed rod, a screw rod, a first servo motor, a moving block, a sampling pipe, a connecting rod, a first gear, a second servo motor, a second gear, a first mounting block, an impeller,a second mounting block, an annular pipe, a first cavity, a first annular rack, a first rotating shaft, a third gear, a crawler belt, a second cavity, a second annular rack, a second rotating shaft, afourth gear, a crushing knife, a reset spring, a fixed block, a contact, a filter screen, a first magnet, a first electromagnet, a second magnet, a second electromagnet, a switch, a movable rod and asliding block. Movement of the sampling pipe is stopped when the crushing knife makes contact with a hard object, collision between the sampling pipe and the hard object is avoided, the working effect of the device is guaranteed, the supporting effect of the device is improved in the sampling work process, and the stability of the sampling pipe in the movement process is guaranteed.

The invention discloses a movable type tower crane which comprises a bottom frame, wherein the bottom frame is articulated to and supported on a stand of a locomotive; a support device is movably arranged between the lower part of the bottom frame and the stand of the locomotive; a work arm and a balance arm are respectively articulated to and supported at the two sides of the top of the bottom frame; the work arm and the balance arm are opposite to each other; a suspension arm folding and unfolding device is arranged in an inner cavity in the top of the bottom frame; two stay cords are tied between the suspension arm folding and unfolding device and the work arm and between the suspension arm folding and unfolding device and the balance arm respectively; a balancing trolley is arranged on the balance arm in a sliding way; a lifting trolley is arranged on the work arm in a sliding way. The movable type tower crane not only is convenient to move and rapid and convenient to transfer, but also is high in lifting height, long in lifting distance and high in lifting efficiency.

The invention relates to the field of optical fiber installation limiting devices, in particular to a big data optical fiber wire installation limiting device which comprises a fixing structure, a telescopic structure, a first angle adjusting structure, a guiding structure, a driving structure and a second angle adjusting structure. The arrangement of the telescopic structure facilitates the adjustment of the supporting height of an optical fiber wire, enables the supporting range of the optical fiber wire to be larger, and reduces the requirements for the installation position of a telegraphpole; through the arrangement of the driving structure, limiting of the telescopic structure can be done conveniently, and the telescopic structure is more stable after height adjustment; and one endof the telescopic structure used for adjusting the supporting distance is fixed to the second angle adjusting structure, the angle between the telescopic structure and the fixing structure can be conveniently adjusted through the second angle adjusting structure, the supporting angle of the optical fiber wire in the vertical direction can be conveniently adjusted to be changed, and the supportingrange of the optical fiber wire is larger; and meanwhile, the optical fiber wire with different angles can be conveniently supported and guided, and the operation flexibility of optical fiber wire fixing is improved.

The invention discloses a liquid crystal display convenient for dust prevention. The liquid crystal display comprises a base, a reel, dustproof cloth and a spring; a supporting column is fixed to thetop of the base; a displayer is fixed to the side, away from the base, of the supporting column; hooks are fixed to the vertical faces of the two sides, close to the bottom, of the displayer; a dustproof frame is installed on the vertical face of the side, away from the hooks, of the displayer; installing frames are fixed to the two sides of the top of the dustproof frame, and the installing frames are fixedly connected with the displayer through fixing rods. The dustproof liquid crystal display is provided with dustproof cloth and hooks; a hanging rod is pulled to drive the dustproof cloth tomove out of a dustproof cloth groove; the inner side of the dustproof cloth is fixedly connected with the reel, so the dustproof cloth drives the reel to rotate when moving, and the reel drives the clockwork spring to roll; after the hanging rod enters the hook, a clockwork spring recovers deformation to generate elastic force, so the reel tightens the dustproof cloth, the hanging rod is fixed inthe hook, the dustproof cloth covers the display, and dust prevention of the display is facilitated.

The invention discloses a stable and adjustable optical distance measuring device and method, and the device comprises a fixed pedestal, the middle part of the front surface of the fixed pedestal is fixedly connected with a control panel, the middle position of the top of the fixed pedestal is rotatably connected with a rotating platform, and the middle position of the top of the rotating platform is fixedly connected with a placement disc. The top of the placing disc is rotationally connected with a distance measuring device, and the two sides of the bottom of the rotating platform are rotationally connected with balance columns. According to the stable and adjustable optical distance measuring device and method, inclination caused by uneven stress during rotation of the rotating platform is prevented, the receiving and transmitting guide sleeve can rotate on the optical distance measuring device, the situation that light emitted by the optical distance measuring device is dispersed when leaving the receiving and transmitting guide sleeve, and consequently positioning of the distance measuring position is inaccurate is effectively avoided, and the positioning accuracy of the distance measuring device is improved. Therefore, ranging blind areas during ranging are reduced, the accuracy in the ranging process is improved, and the ranging distance can be adjusted conveniently.

The invention belongs to the technical field of constructional engineering equipment and relates to a constructional engineering electric power circuit stringing device. The device comprises an adjusting rotating wheel, a lead screw, an upper movable plate, upper movable connecting rods, overturning supports, fixed stringing mechanisms and a supporting seat mechanism; the adjusting rotating wheelis fixedly connected to the top end of the lead screw; the bottom end of the lead screw is arranged on the inner side of the supporting seat mechanism in a threaded fit mode; the upper movable plate is rotationally connected to the upper end of the lead screw; the outer side of the upper movable plate is evenly and rotationally connected with one ends of the four upper movable connecting rods in asurrounding mode; and the other ends of the four upper movable connecting rods are rotationally connected to the middle of the inner side of one overturning support. According to the constructional engineering power line stringing device, when needing to be carried and moved, the whole device can be controlled to contract inwards, so that the overturning supports and the fixed stringing mechanisms contract towards the lead screw, the occupied space of the device is reduced, and the device is convenient to move.