72results about How to "Improve support quality" patented technology

The invention relates to a supporting method for a roadway fully-mechanized drivage operation without withdrawal of a roadheader, aiming to solve the problems of bad safe reliability and complex operating processes of conventional roadway fully-mechanized drivage operations with withdrawal of roadheaders. The supporting method includes providing temporary supporting for a new roof exposed in the roadway fully-mechanized drivage operation by an associated operation with the roadheader, and performing a supporting operation of laying metal nets and steel belts on a roadhead by a roadway drivage alternating supporting device; performing a permanent supporting operation of punching anchor rods on the roof and two sides of the roadway in a roadway zone behind the roadheader by a movable roof bolter supporting platform; and conveying coal cut by the roadheader through a bridge reversed loader and a belt conveyer. The process design is reasonable; supporting and moving is stable; a roadway empty operation is avoided; supporting is safe and reliable; the conventional operation method that the roadheader is needed to be withdrawn in each step and operation procedures are alternated frequently is changed, so that the roadheader can drivage continuously without being withdrawn. Synchronous mechanical operation of drivage and permanent supporting can be realized, and utilization rate and drivage efficiency of the roadheader can be increased remarkably.

The invention provides a tunnel excavation staggered type supporting device, which solves the problems in prior art of lagging supporting means, difficulty in moving, operation at a halt state, low efficiency and the like. The tunnel excavation staggered type supporting device comprises a hydraulic stand column as a support and a beam frame consisting of transverse beams and vertical beams. According to the technical main points, the beam frame comprises a girder frame and a secondary beam frame; auxiliary anchoring rod devices are arranged at the side parts of an auxiliary front beam and an auxiliary back beam; the front end of a main front vertical beam is hinged with a front beam assembly; a moving hydraulic cylinder is hinged between the main front beam and the auxiliary back beam; and the hydraulic stand column moves synchronously by means of assembling with a connecting rod together. The tunnel excavation staggered type supporting device provided by the invention has the advantages of reasonable structural design, stable supporting and moving, convenience in dismounting and maintenance, and high security and reliability. The tunnel excavation staggered type supporting device is entirely suitable for field and in-time support using conditions, can mechanically support an ejector plate which is just exposed to a tunnel excavation working face in time, can assist tunnel permanent supporting operations, such as an auxiliary screen, an anchoring rod and the like, and cover the continuous operation through a comprehensive mechanical excavator, so that the supporting quality and the excavation operation efficiency of the ejector plate of a tunnel can be obviously improved.

The invention provides a retractable trapezoid support with cushion blocks. The retractable trapezoid support consists of a top beam and two combined stand columns, wherein each of the combined stand columns is formed by fastening a column head, a column body and a longitudinal retractable body which is arranged between the column head and the column body by bolts which pass through screw holes of the column head and the column body through a clamping plate on which a strip groove is formed; two ends of the top beam are in curved surface connection with the combined stand columns through sliding cushion blocks; and a transverse retractable body is arranged between the top beam and each sliding cushion block. The retractable trapezoid support has high bidirectional contractibility and can adapt to the change of ground pressure of a laneway better. Through the retractable trapezoid support, a fabricated reinforced concrete trapezoid support which is out of use due to lack of high contractibility can be used again, the support effect of an I-shaped steel support can be further improved, the using amount of the I-shaped steel support can be reduced, the quality of the laneway support can be improved, the support cost can be reduced, steel consumption can be reduced, wood is not needed, and ecological environment preservation, energy conservation and emission reduction are facilitated.

The invention discloses a resin anchoring agent bag breaking and stirring device which comprises a sleeve. An opening is formed in the lower end of the sleeve, at least two breaking cutters are uniformly and fixedly arranged at the top of the sleeve along a peripheral direction, the maximum rotation diameter of each breaking cutter is equal to the outer diameter of the sleeve, and a plurality of screw stirring ribs are arranged on the periphery of the sleeve at intervals. The invention further discloses a resin anchoring agent bag breaking and stirring device method. The device is simple in structure, convenient to use, reasonable in design and high in practicability and can effectively solve the problems that breaking effects of resin anchoring agent bags are not ideal, and anchoring force is affected in a current anchor rod or anchor cable support. An efficient device is provided for breaking of the resin anchoring agent bags, stirring effects of resin anchoring agents can be effectively improved, materials in the resin anchoring agent are more sufficiently mixed, important guarantee is improved for improvement of quality of the anchor rod or anchor cable support, a constructionprocess of an anchor rod or anchor cable support technique is innovated, and the device has great social and economic benefits.

The invention discloses a wall building formwork applicable to intelligent construction of a vertical shaft. The outer surface of the formwork is coated with a Teflon coating; a main body comprises a core frame cylinder, curve sliding rails and segmental sliding forms, and formwork supporting and releasing actions of the segmental sliding forms are realized by the aid of radial contraction indirectly produced by vertical traveling of the segmental sliding forms in the longitudinal direction through the curve sliding rails. Leveling and centering of the formwork are subjected to servo adjustment by corresponding hydraulic oil cylinders after pose determination by sensors, and circularity regulation is not needed. The formwork has basic function of a concrete pouring envelop structure as well as capacity of monitoring and evaluating the quality and an evolution process of cast-in-place concrete by means of setting of pressure, temperature, moisture and ultrasonic measurement points on the outer surface of the formwork. The formwork has the characteristics of being reasonable in structure, reliable in work, quick in action and capable of performing automatic centering and leveling and evaluating the pouring quality of the concrete in real time, and realizes intelligence of the construction process of the vertical shaft.

The invention discloses a cast-in-place box girder construction method which comprises the steps that an assembly type foundation is connected with a foundation fastening bolt through a foundation connecting step, and a pier stud hoop is arranged on the outer side wall of a bridge pier stud; position control sand in the fine adjustment sand cylinder is recycled through the leaked sand recycling tank; a bottom plate inner support and a web plate inner support are arranged at the upper parts of the web plate moulding bed and the bottom plate moulding bed; a lower-layer lifting plate, an upper-layer lifting plate and a lifting connecting rod are arranged on the top plate reinforcement cage, and sliding clamping plates are arranged on the two sides of the top plate reinforcement cage; the space position of the outer mold side plate can be controlled by means of the side plate position control tenon and the side plate position control bolt, and the position of the box girder inner mold is controlled through the inner mold supporting body; the sliding material box can move along the limiting sliding rail and is provided with a pouring monitoring pipe. Support frame connecting hinges arearranged between the adjustable support frame and the bottom support frame and between the adjustable support frame and the top support frame, and the inclination angle of the adjustable support framecan be controlled through the angle adjusting vertical bolts and the angle adjusting transverse bolts. The accuracy of reinforcement cage positioning and concrete pouring construction control is improved, and the maintenance difficulty is reduced.

The invention provides a multifunctional operation rack suitable for tunnel construction. The multifunctional operation rack comprises a movable portal, and a concrete guniting device, a jumbolter device and a steel arch splicing device are arranged on the movable portal. The steel arch splicing device is arranged on the movable portal, so that the splicing process of the steel arch is mechanized, the jumbolter device and the guniting device are integrated, the system integration degree is high, cooperative and efficient operation can be achieved, the working efficiency is improved, the arch is timely supported, the supporting efficiency is high, the quality is more stable, and the safety of tunnel construction is improved.

The invention relates to an underground diaphragm wall and a construction method. The underground diaphragm wall is characterized in that an inner supporting body is arranged between fabricated guidewalls, and the positions of guide wall inner molds can be controlled through the inner supporting body and corner supporting bodies; the transverse positions of a fixed supporting rod, a rotating supporting rod and a top rib bed-jig are dynamically controlled through a moving support; hoisting of an underground diaphragm wall reinforcement cage is carried out through an outer fastening hoisting plate and a hoisting connecting ring on a reinforcement end plate; an upper-layer support plate, a lower-layer support plate and an anti-floating press plate are adopted for limiting the vertical position of the underground diaphragm wall reinforcement cage; the longitudinal position of a casting platform plate is controlled through a wall-side rail and a sliding supporting body, the height of a lifting connector is controlled through a lifting control body, and the transverse position of a filling pipeline is controlled through a transverse movement connector and a transverse movement control body; and a rigid scraping plate and a flexible scraping plate are synchronously adopted for carrying out structural steel end plate wall brushing construction. The bundling and hoisting construction equality of the underground diaphragm wall reinforcement cage can be improved, the stress performance of the construction structure can be improved, and the concrete pouring construction quality can beimproved.

A pneumatic post drill is composed of a mainframe, a control console and a muffler through a flexible rubber hose. The pneumatic post drill which is a portable drill has the advantages of safety, explosion protection, high torque, high rotating speed, light weight, small size, high efficiency, simple structure, convenience in maintenance and the like. Therefore, the pneumatic post drill is high in working efficiency, good in support quality, low in labor intensity of workers, less in drilling footage cost and suitable for market promotion; the parts of the drill are connected through the flexible rubber hose, flexible arrangement on different downhole sites is facilitated, and the mainframe can be further disassembled when transportation conditions are poor. The drill is mainly applied to coal mines with coal and gas outburst and explosion risk, and can also be used for geologic structure coal seam exploration, water exploration, gas exploration, coal seam water injection and pressure hole relief as well as drilling of roadway side anchor bolt holes, stirring of anchor bolts and mounting of nuts. The drill can be further used for stirring of rock roadway resin anchor bolts and mounting of bolts, and is one of necessary devices in the coal mining industry.

The invention discloses a large dip angle soft thick coal seam top coal roadway surrounding rock control method. A roadway surrounding rock comprises I-beams and active-passive combined roadway protecting devices. Each active-passive combined roadway protecting device is composed of I-beam supports, protecting plates, I-beam buckles, anchor cables, locksets and screw connecting components, whereinthe I-beam supports, the protecting plates and the I-beams are matched in pairs, and the anchor cables, the protecting plates and the I-beams are matched in pairs; the three I-beam supports and the six anchor cables form the one active-passive combined roadway protecting device, the I-beam supports are arranged in parallel in a spaced mode, each protecting plate is arranged on the corresponding same side surfaces of the multiple I-beam supports in a penetrating mode, the protecting plates are connected with the I-beam supports through the I-beam buckles and the screw connecting components correspondingly, the anchor cables which are parallel to the I-beam supports penetrate through the protecting plates vertically, the I-beam supports and the anchor cables are staggered, and the anchor cables are connected with the protecting plates through the locksets correspondingly; and large dip angle soft surrounding rock roadway supporting is achieved, and the problem that pure anchor rod supporting or pure I-beam support supporting has inadequate control over a soft rock roadway is solved.

The invention relates to a construction method of an inclined cable tower construction structure system, which comprises the following steps of: 1) construction preparation; 2) arrangement of a combined support frame and a combined grid frame; 3) binding of cable tower steel bars; 4) installation of a tower cable guide pipe; 5) construction of a sliding moulding plate; 6) arrangement of a groutingguide pipe; and 7) concrete maintenance construction of the cable tower. The construction method of the inclined cable tower construction structure system has the advantages that arrangement efficiency of the combined support frame and the combined grid frame can be improved, integrity of the structure can be enhanced, and supporting quality of the sliding moulding plate can be effectively improved; positioning of the cable tower steel bars is accurate, connection is convenient, binding construction quality of longitudinal steel bars and transverse stirrups can be effectively improved, and on-site construction difficulty is reduced; and on-site arrangement of the concrete grouting guide pipe is convenient, an inclination angle of the grouting guide pipe can be dynamically adjusted according to an inclination condition of the cable tower, on-site positioning difficulty is reduced, and concrete pouring quality is improved.

The invention discloses a preparation device and backfilling method for flow-state cement soil. The preparation device for the flow-state cement soil comprises a flow-state cement soil preparation pool and cement soil stirring and guniting drill bits. An opening is formed in the upper portion of the flow-state cement soil preparation pool and supporting track guide rails are arranged on the two sides of the top of the flow-state cement soil preparation pool and provided with supporting frames. The cement soil stirring and guniting drill bits are arranged in the flow-state cement soil preparation pool. One end of each cement soil stirring and guniting drill bit is exposed out of the corresponding supporting track guide rail and connected with a motor and a cement paste conveying pipe through the corresponding supporting frame and the other end of each cement soil stirring and guniting drill bit extends into the flow-state cement soil preparation pool and is used for stirring the cement soil. By the adoption of the preparation device and backfilling method for the flow-state cement soil, replacing and supporting quality is improved, the construction progress is improved at certain degree, and the replacing and supporting effect is good. In addition, the cement soil has certain beneficial influences on basement water resistance.

The invention relates to a leakage-proof stope face roof comprising supporting columns arranged at an interval and a beam erected on the supporting columns. The bottoms of the supporting columns are fixed on a tunnel bottom plate, the beam is fixedly arranged at the tops of the supporting columns, a filling buttress is filled between one side, facing the side wall of a tunnel, of one supporting column and the supporting column, the upper side of the beam faces a top plate of a tunnel, and fillers are filled between the beam and the top plate. The stope face protection roof is capable of improving supporting quality and guaranteeing stoping safety, cohesive force and an internal friction angle between a fracture and a coal-rock mass are increased by means of erecting a Malisan material layer, resistance of relative displacement between the inside of a rock mass and a stope face is increased, and integral stability of the coal-rock mass and stoping safety are improved.

The invention belongs to the field of auxiliary components of anchor rods, and particularly relates to a sleeve assembly capable of improving the anti-shearing performance of an anchor rod and the anchor rod comprising thesleeve assembly. The sleeve assembly comprises a sleeve (2), the sleeve (2) is arranged at the inner side end, provided with a tray (4), of an anchor rod body (1), and an O-shaped sealing ring (3) is arranged between the sleeve (2) and the anchor rod body (1); the sleeve assembly further comprises an iron spacer (7) arranged at the outer side end of the tray (4) of the anchorrod body (1), a plastic washer (6) and a ball pad (5), and a fixed damping nut (8) is arranged at the outer end of the ball pad (5). The whole design can effectively reduce the amount of anchor rod fracturing caused by staggering of holes and surrounding rock, improve the anti-shearing capacity of an anchor rod supporting system, reduce cost of supplementary driving of anchor rods, reduce manuallabor of workers, improve the supporting effect of the anchor rods, and improve the safety ofroadway supporting.

A rotor core and winding assembly including: separable rotor core sections assembled to form the rotor core, where the core sections each have a substantially circular perimeter and are axially aligned when assembled as the core, and the winding assembly includes a pre-assembled superconducting field winding and a winding support, wherein the winding support extends between adjacent core sections in the assembled rotor core.

The invention discloses a head and face bearing tool for medical plastic repair, which relates to the technical field of medical instruments and comprises a mounting assembly, an angle adjusting mechanism, a face bearing assembly, a head bearing structure, a clamping device, an anti-pinch assembly, a connecting mechanism, a pressing rod mechanism, a push rod mechanism, an adjusting mechanism and a guide mechanism. Medical staff can conveniently adjust the bearing angle through the angle adjusting mechanism, and the medical staff can conveniently and rapidly switch according to bearing parts through the face bearing assembly and the head bearing structure which are arranged on the two sides of the mounting assembly; the clamping device is matched with the adjusting mechanism, the guiding mechanism and the connecting mechanism so that the clamping force and the clamping posture can be conveniently adjusted, the comfort of a user can be improved through the anti-clamping assembly, the clamping stability of the structure can be improved through the pressing rod mechanism and the pushing rod mechanism, and the problems that in the prior art, applicability is not high, and the clamping force is large are solved. And the angle, the clamping force and the clamping stability cannot be controlled.

The invention provides an operation rack for tunnel supporting construction. The operation rack comprises a movable portal, and a concrete guniting device, a jumbolter device and a steel arch splicing device are arranged on the movable portal; and the steel arch splicing device comprises a moving mechanism used for moving the steel arch and a grabbing mechanical arm used for grabbing the steel arch, and the grabbing mechanical arm is matched with the moving mechanism. The steel arch splicing device is arranged on the movable portal, so that the splicing process of the steel arch is mechanized, the jumbolter device and the guniting device are integrated, the system integration degree is high, cooperative and efficient operation can be achieved, the working efficiency is improved, the arch is timely supported, the supporting efficiency is high, the quality is more stable, and the safety of tunnel construction is improved.

The present invention relates to a mine mining equipment, in particular to a cable-anchor drilling rig for mining, which comprises a main body of a cable-anchor drilling rig, a main body of a cable-anchor drilling rig, a telescopic rod and an anchor rod connected in sequence, and the bottom of the main body of a cable-anchor drilling rig is sequentially arranged from left to right There are a booster, a slideway plate and a gradient gauge, the main body of the cable anchor drilling rig is placed on the slideway plate, the slideway plate is connected with a support, a storage box is arranged on the support, and the bottom of the support is connected with wheels. The invention has the advantages of simple processing, convenient operation, firmness and durability, and low cost, greatly improves the support speed and support quality, improves the safety factor of construction personnel, and creates conditions for realizing rapid and comprehensive mechanized excavation.