89results about How to "Improve support efficiency" patented technology

The invention relates to the field of coal mine underground roadway supporting processes, and discloses a roadway supporting process for regional high-stress discrete solidification. The method comprises the steps of geological exploration and stress testing, roadway support processing, support sorting, parameter determination and real-time monitoring and feedback, in the roadway support processing, a stress data processing module is constructed, stress data around a roadway are discretized into a plurality of area units, support sorting is conducted on the area units, and the roadway support processing module is constructed; and the high-stress area and the secondary high-stress area are sequentially subjected to supporting construction, parameters of anchor rods and anchor cables are determined before supporting construction, and the supporting effect is ensured. According to the roadway supporting method suitable for regional high-stress discrete solidification, the stability of the roadway is enhanced, the service life is prolonged, and the safety is improved by perfecting the supporting process.

The invention relates to the technical field of power distribution network diagram generation, and discloses a power distribution network diagram automatic generation method, which comprises the following steps: acquiring CIM model data of a target power grid, analyzing the CIM model data, and extracting and storing model object data from the CIM model data; obtaining target object data from the model object data; respectively constructing topological structure data of a single line diagram formed by traversing second target object nodes which have direct or indirect affiliation relation and contact relation with the first target object nodes by taking different first target object nodes as starting points; and arranging topological structure data of all the single line diagrams according to the principle of no cross overlapping to form an intermediate topological graph, and finally connecting second target object nodes which have different first target object nodes in the intermediate topological graph but have a contact relationship through a connecting line to finally form a power distribution network diagram. According to the invention, the problems of large workload, low efficiency and manual misoperation of manual network diagram drawing are solved.

The invention provides a deep well roadway surrounding rock area stress optimization control method, and belongs to the technical field of surrounding rock area stress optimization, and the method comprises the following steps: obtaining key data of deep well roadway surrounding rock; identifying a potential stress concentration area; performing grading evaluation on the identified potential stress concentration area, and determining the grade of the surrounding rock according to an evaluation result; according to the grade of the surrounding rock, a corresponding supporting strategy is formulated; the advanced presplitting blasting technology is applied to all grades of surrounding rocks; arranging a plurality of sensor nodes in the stress concentration area; the sensor nodes send monitoring data to the cloud processing center in a wireless mode, and the cloud processing center predicts the stability of surrounding rock and sends a prediction result to the expert terminal; and an expert formulates a new support strategy or adjusts an existing support strategy according to the prediction result of the expert terminal. According to the stress optimization control method for the surrounding rock area of the deep well roadway, the stability of the surrounding rock is improved through comprehensive technical means, and safe and efficient mining of a mine is guaranteed.

The utility model discloses an electric power engineering auxiliary installation support, which belongs to the technical field of electric power engineering, and comprises a vertical supporting column, a plurality of transverse supporting columns are uniformly distributed on one side of the vertical supporting column, and the outer sides of the transverse supporting columns are connected with rectangular sliding pipes in a sliding manner; a longitudinal supporting box is arranged at the top of the rectangular sliding pipe, a first U-shaped supporting block is fixed to the top of the longitudinal supporting box, second U-shaped supporting blocks are arranged at the two ends of the first U-shaped supporting block, and a moving mechanism used for moving the second U-shaped supporting blocks is arranged in the longitudinal supporting box; through a series of designs, energy generated when the cable vibrates can be absorbed, the influence on the cable is reduced, the cable is effectively prevented from being damaged, the distance between the two second U-shaped supporting blocks can be adjusted, then the cable supporting efficiency can be improved, cables with different diameters can be clamped, and the cable fixing strength can be improved.

The invention discloses a drilling, grouting and anchoring integrated automatic drill boom and a control method. The drilling, grouting and anchoring integrated automatic drill boom comprises grouting anchor rods and an anchor rod library, and the multiple grouting anchor rods are assembled on the anchor rod library; the drilling mechanism is connected and matched with the anchor rod library; the drilling box is mounted on the drilling mechanism; the electro-hydraulic control device is mounted on one side of the drilling mechanism and is used for providing operation power; an oil duct bottom plate is arranged at the bottom of the drilling mechanism, an internal oil duct is arranged in the oil duct bottom plate, and the internal oil duct is used for conveying hydraulic oil in the electro-hydraulic control device for electro-hydraulic control; the anchor rod warehouse is connected with the oil duct bottom plate, the anchor rod warehouse is further provided with an anchor rod mechanical arm, the anchor rod mechanical arm is used for transferring and guiding the grouting anchor rod and clamping the grouting anchor rod to be connected with the drilling box, and the drilling box drives the grouting anchor rod to rotate and is used for conducting construction on the grouting anchor rod according to the working procedures of drilling, grouting and anchor rod anchoring. By means of the structure, the problems that an existing anchor rod drill arm is complex in structure, a rubber pipe and a cable are prone to damage, anchor rod supporting automation cannot be achieved, and anchor rod supporting operation procedures are complex are solved.

The utility model discloses a drilling, grouting and anchoring integrated power head, which relates to the technical field of tunnel and mining machinery, and comprises a box body, a locking device, a rotating device and a grouting head, the locking device comprises a first rotary driving device, a first driving shaft and a second driven shaft, the first rotary driving device is connected with the first driving shaft, and the second driven shaft is connected with the rotating device. The first driving shaft is in meshed connection with the first driven shaft, and one end of the first driven shaft can rotate a nut on the anchor rod to lock the anchor rod; the rotating device comprises a second rotation driving device, a first driving shaft and a second driven shaft, the second rotation driving device is connected with the second driving shaft, the second driving shaft is in meshed connection with the second driven shaft, the second end of the second driven shaft is used for being detachably and fixedly connected with the anchor rod, and the grouting head is connected and communicated with the first end of the second driven shaft. And slurry can be injected into the anchor rod through the central cavity of the second driven shaft, so that the anchor rod supporting efficiency is effectively improved, and the labor intensity of workers is effectively reduced.

The utility model provides a steel bar lagging jack conveying structure and milling excavator, including connecting strip seat, conveying track and bracing frame, connecting strip seat is connected with one side of milling excavator body, conveying track is connected with connecting strip seat top and extends along the milling excavator body back and forth direction, bracing frame is connected with conveying track top in sliding mode, the bracing frame is connected with the milling excavator body back and forth direction, and the milling excavator body back and forth direction extends along the milling excavator body back and forth direction. At least two upper brackets are arranged above the supporting frame, and the upper brackets are provided with front-back through brackets. According to the steel bar arch frame conveying structure, the conveying rail is installed on the side portion of the milling excavator body through the connecting strip base, the supporting frame on the conveying rail is used for bearing a steel bar framework, the supporting frame is pushed to drive the steel bar arch frame to move forwards to the front side of the milling excavator body, and orderly conveying of the steel bar arch frame from back to front is achieved. According to the conveying structure, the side space of the milling excavator body is fully utilized, the conveying efficiency of the just-entering arch frame is effectively improved, and the supporting efficiency of a tunnel is improved.

The invention discloses an adjusting mechanism of a small-spacing top anchor rod drilling machine for a coal mine, which comprises an external drilling machine for a top anchor rod and an internal drilling machine for a side anchor rod, the internal drilling machine is connected with a lifting oil cylinder, and a rotating mechanism is fixed on a sliding block of the lifting oil cylinder; the rotating mechanism drives the internal drilling machine to rotate left and right to adjust the side wall anchoring angle, the back face of the lifting oil cylinder is further provided with a swing mechanism used for driving the internal drilling machine to swing front and back to adjust the angle, and the external drilling machine is connected with a side sliding mechanism which drives the external drilling machine to move transversely to give way to the internal drilling machine during rotation. The external drilling machine and the external drilling machine are both connected with a front-back sliding mechanism; all-directional operation in the front-back direction, the up-down direction and the left-right direction can be achieved, the mechanism can conduct accurate drilling and anchor rod installation operation on various complex terrains, under the complex conditions, the empty top distance is shortened, the empty side distance can be greatly shortened, the tedious manual anchor rod supplementary driving work is avoided, and the supporting efficiency and accuracy are improved.

The utility model discloses a combined frame column template support structure belongs to frame column template support technical field, and the periphery surface of column template body can detachably connect with reinforcing strip, and the surface of reinforcing strip is movably connected with the inner wall of support frame body, and the support frame body is combined by two first support rods and two second support rods, and the first support rod is movably connected with the second support rod, and one end of two second support rods can detachably connect with locking assembly, this combined frame column template support structure, the support frame that is combined by two first support rods and two second support rods, not only is convenient to support, and can adjust according to the size of column template body quickly, improves the support efficiency, and through the locking rod, locking block, clamping groove and force bar of setting, the user's manual quick locking support position is convenient, and the use convenience is greatly improved.

The utility model discloses a clamping device for metal steel pipe processing, which comprises a steel pipe clamping device, the two sides of the top of the steel pipe clamping device are fixedly connected with support rings, the inner sides of the support rings are rotatably connected with metal rods, and the surfaces of the metal rods are fixedly connected with hold-down rings. A servo motor is started, the servo motor drives a second bevel wheel to rotate, the second bevel wheel drives a first bevel wheel to rotate, the first bevel wheel drives a screw to rotate, the screw drives a lifting plate to move upwards, the lifting plate drives a toothed plate to move upwards, and the toothed plate moves to drive a gear to rotate. The gear rotates to drive the metal rod to turn over, the metal rod turns over to drive the pressing ring to press the steel pipe, the steel pipe can be fully fixed, the steel pipe can be clamped and fixed, follow-up machining and cutting are facilitated, an existing manual clamping mode is replaced, and therefore the efficient and automatic clamping effect is achieved.

The application provides a supporting device for a coal mine tunnel, which comprises a roof, a first plug-in part arranged at the bottom end of the roof, vertical plates arranged at two ends of the roof respectively, second plug-in parts arranged at the top ends of the vertical plates, the second plug-in parts being in plug-in cooperation with the first plug-in part, and fixing rods penetrating through the second plug-in parts and the first plug-in part to connect the roof and the vertical plates. The roof and the vertical plates are connected in a plug-in mode, the fixing rods penetrating through the roof and the vertical plates can realize quick positioning of the installation of the roof and the vertical plates, ensure a stable connection relationship, effectively reduce the number of bolts, simplify the connection mode, and improve the supporting efficiency.

The present invention discloses an integrated device for installing coal mine anchors and a method for using the same. The device is used in conjunction with an anchor bolt machine. The integrated device for installing the anchor bolt comprises: a nut installation mechanism, an anchor bolt installation mechanism and an anchor bolt limiting mechanism. The upper part of the nut installation mechanism is provided with an empty slot matching the nut along the length direction, and the lower part of the empty slot is provided with two installation holes axially through the empty slot. The anchor bolt limiting mechanism is overlapped on the nut installation mechanism through the installation hole through the empty slot. The anchor bolt installation mechanism is installed in the empty slot and located above the installation hole. Its outer diameter matches the inner diameter of the empty slot. A threaded hole matching the anchor bolt is radially provided through the center of the anchor bolt installation mechanism. The nut installation mechanism is connected to the output shaft of the cutting mechanism of the anchor bolt machine. The present invention utilizes the rotation of the cutting mechanism of the anchor bolt machine and the extension and retraction of the legs to provide rotational power to the device, completes the entire process of anchor bolt installation and nut tightening, reduces the use of installation tools, simplifies the anchor bolt installation process, and improves support efficiency.

The application relates to the technical field of semiconductor optoelectronic devices, and discloses a low-crosstalk Micro-LED epitaxial wafer, a preparation method and a Micro-LED display system. The low-crosstalk Micro-LED epitaxial wafer comprises a driving backboard, a light-emitting structure and a photonic lattice isolation structure layer which are sequentially stacked, the light-emitting structure comprises a P-type semiconductor layer, a multi-quantum well light-emitting layer and an N-type semiconductor layer which are sequentially stacked on the driving backboard; a groove array arranged periodically is formed on the photonic lattice isolation structure layer, so that the Micro-LED epitaxial wafer is divided into a plurality of independent pixel units, the pixel units comprise a transmission unit and a conversion unit, and the light-emitting colors of the transmission unit and the conversion unit are different; quantum dot materials are filled in the grooves corresponding to the conversion units and are used for realizing light-emitting color conversion. According to the application, multicolor pixels can be directly realized on the driving backboard, the crosstalk rate is reduced, and the color purity, yield and light-emitting efficiency are improved.

The utility model discloses an automobile covering part based on a CAE (Computer Aided Engineering) technology, which comprises a plate body, a frame body is fixed at the top end of the plate body, a groove is formed in the top end of the frame body, a sealing rubber ring is fixed in the groove, a fixed plate is fixed on the side wall of the frame body, a vertical rod is connected to the top end of the fixed plate in a penetrating manner, and a supporting assembly for driving the vertical rod to move is arranged in the fixed plate. A supporting box is fixed to the top ends of the vertical rods, a plurality of positioning columns are connected to one side of the supporting box in a penetrating mode, a moving assembly driving the positioning columns to move is arranged in the supporting box, and a plurality of positioning holes matched with the positioning columns are formed in the outer wall of the sealing rubber ring. According to the scheme, when the sealing rubber ring needs to be supported, under the movement of the movement assembly, the multiple positioning columns can be driven to synchronously move, the multiple positioning columns are synchronously inserted into the corresponding positioning holes respectively, the connection operation between the positioning columns and the positioning holes is facilitated, the time of repeated operation is shortened, and therefore the sealing rubber ring is conveniently and rapidly supported; and the supporting efficiency of the sealing rubber ring is improved.

The present invention relates to a support device and a tunneling system. The support device includes a plurality of support units. The support units include a contraction state and an expansion state. The plurality of support units are divided into a first group and a second group. The support units of the first group are in an expansion state, and the support units of the second group are in a contraction state. The support unit includes a support frame, a rotating bracket and a support assembly. The rotating bracket is rotatably connected to the support frame; and the support assembly is rotatably connected to the support frame. The rotating bracket in the first group is located in a load-bearing position, and the rotating bracket is supported by the support assembly in the second group that is in a support position. The rotating bracket is movably connected to the support assembly in the second group, so that the second group can be transported forward through the first group. The rotating bracket in the first group that is located behind the second group can be rotated from a stowed position to a load-bearing position, and the rotating bracket in the first group that is located in front of the second group can be rotated from a load-bearing position to a stowed position, so that the rear rotating bracket replaces the front rotating bracket to support the second group.

The invention discloses a pipeline fixing hanging bracket type with a small root corner. The pipeline fixing hanging bracket type comprises two hanging rods and two root bases. The two hanging rods are fixedly connected with the two root bases through connecting springs respectively, the bottom ends of the two hanging rods are fixedly connected through a cross arm, two pipe hoops for fixing a pipeline are hinged to the top end of the cross arm, the two hanging rods are fixedly connected with the two root bases through bolts respectively, and the swing rods are fixedly arranged at one ends of the bolts. The swing rod and the hanging rod are located on the same vertical plane, the two limiting plates are located on the two sides of the swing rod correspondingly and used for limiting the swing amplitude of the swing rod, and the adjusting assembly is arranged on one side of the root base. The whole hanger can be driven to rotate in the thermal expansion direction of the pipeline, so that the root stress of the fixed hanger can be effectively reduced, and the safety problem possibly caused by overlarge root stress of the hanger rod is solved.

The leg supporting device for the orthopedics department comprises a supporting shell, the bottom of an inner cavity of the supporting shell is fixedly connected with an air cylinder, the top of the air cylinder is fixedly connected with a pushing plate, and the top of the pushing plate is fixedly connected with a supporting column. The pushing plate is conveniently pushed to move through the air cylinder, so that the pushing plate pushes the supporting column to move, the supporting seat is pushed to move through movement of the supporting column, the supporting height of the supporting seat can be effectively adjusted, a user can adjust the supporting height of the supporting seat according to the height of the sitting posture of a patient, and dressing change work of workers is facilitated; when the threads on the surface of the forward and reverse threaded rod are in threaded connection with the threads in the inner cavities of the threaded sleeves, the forward and reverse threaded rod rotates to drive the two threaded sleeves at the two ends of the surface of the forward and reverse threaded rod to move towards the inner side mutually, and the threaded sleeves drive the connecting columns to move; and the limiting plate and the rubber pad are driven to move through the connecting column.

The present application belongs to the technical field of coal mine support netting, and specifically relates to a temporary support automatic drilling and anchoring and netting device and method. The device comprises a walking mechanism, a temporary support mechanism and an anchor rod drilling machine being installed on the upper side of the walking mechanism, a mechanical arm being arranged at the front end of the walking mechanism and used for grabbing anchor nets for top netting and grabbing anchor rods for installing the anchor rods on the anchor rod drilling machine, an anchor net storage mechanism being arranged at the rear end of the walking mechanism and used for storing anchor nets, and an anchor rod storage mechanism being arranged at the rear end of the walking mechanism and used for storing anchor rods, and a net feeding mechanism being arranged at the middle part of the walking mechanism and used for feeding the anchor nets placed in the anchor net storage mechanism to the automatic netting mechanism. The present application solves the problem of low work efficiency caused by manual operation in the prior art, and effectively protects the health and safety of workers in a harsh and dangerous environment.

The utility model discloses a portable computer support frame with a heat dissipation function, which belongs to the technical field of computer accessories and comprises a first heat dissipation plate and a second heat dissipation plate hinged to one side of the first heat dissipation plate, heat dissipation components are arranged in the first heat dissipation plate and the second heat dissipation plate, a barrier plate is arranged at the top of the first heat dissipation plate, and the barrier plate is arranged at the bottom of the first heat dissipation plate. One end of the barrier plate extends to the top of the second heat dissipation plate, the first heat dissipation plate and the second heat dissipation plate are arc-shaped, heat dissipation can be carried out on the bottom of a computer in the process by arranging the heat dissipation assembly, and the first heat dissipation plate and the second heat dissipation plate are not traditionally rectangular, so that the area is small, the contact area is reduced, and the heat dissipation efficiency is improved. The portable and heat dissipation efficiency of the heat dissipation plate is improved, the supporting assembly is arranged, the heat dissipation assembly can be supported in the process, a ventilation space is formed between the heat dissipation assembly and a placement table top, and the supporting efficiency of the heat dissipation plate is improved.

The invention discloses a steel sheet pile connecting structure, relates to the technical field of special sheet pile walls for foundation engineering, and aims to improve the strength and rigidity of a joint part for vertically connecting steel sheet pile sections. According to the technical scheme, according to the steel sheet pile connecting structure, adjacent steel sheet pile sections are connected through inserting pieces in the longitudinal direction and connected through locking openings in the transverse direction, the longitudinal direction of the steel sheet pile sections is the vertical direction in the construction period, and the transverse direction of the steel sheet pile sections is the extending direction of steel sheet piles on the horizontal plane in the construction period; the steel sheet pile section comprises a web and wing plates on the two sides of the web, and locking openings matched with each other are formed in the edges of the wing plates. The plug connector comprises two baffles and a connecting part between the two baffles, the gap between the two baffles is divided into an upper inserting groove and a lower inserting groove through the connecting part, the lower end of the steel sheet pile section on the upper portion of the plug connector is inserted into the upper inserting groove and fixedly connected with the upper inserting groove, and the upper end of the steel sheet pile section on the lower portion of the plug connector is inserted into the lower inserting groove and fixedly connected with the lower inserting groove. The method is used for connecting the steel sheet pile sections and forming the steel sheet pile.

The utility model discloses a joint fissure rock mass roadway combined supporting structure which comprises a first anchor rod set, a second anchor rod set, a reinforcing mesh and concrete, the first anchor rod set comprises a first anchoring tray and at least two first anchor rods, the first anchoring tray is used for fixing the first ends of the first anchor rods, and the second anchor rod set is used for fixing the second ends of the first anchor rods. Included angles exist between the first anchor rods and the adjacent first anchor rods, included angles exist between the first anchor rods and the plane in the axial direction of the roadway, the second ends of the first anchor rods enter a loosening ring of the rock mass, the second anchor rod sets are located in the centers of the four adjacent first anchor rod sets, and the first ends of the second anchor rods are fixed to the second anchoring tray; the second end of the second anchor rod enters an elastic-plastic area of a joint fissure rock mass of the roadway, the reinforcing mesh is connected with the first anchoring tray and the second anchoring tray, and the first anchor rod set, the second anchor rod set, the reinforcing mesh and the rock mass are fixed through concrete. The joint fissure rock mass roadway combined supporting structure has the advantages of being small in anchoring blind area and high in supporting efficiency.

The invention relates to the technical field of intelligent mining equipment, in particular to a supporting action monitoring method and device of a hydraulic support and electronic equipment. The method comprises the following steps: collecting various support data of the hydraulic support, and determining an association relationship among the various support data; constructing a complex network by taking various support data as network nodes and taking the incidence relation as a connecting edge; and carrying out dynamic trend analysis on the hydraulic support by adopting a complex network to obtain the action trend of the hydraulic support. According to the scheme, the action trend of the hydraulic support can be predicted, and the accident risk probability is reduced.

The invention discloses a supporting and anchoring cantilever type tunneling machine for underground coal mine tunneling. The heading machine comprises a heading device, an anchor rod pushing device, an anchor rod drilling device and a temporary supporting device, the temporary supporting device is arranged at the front end of the tunneling device and has a folded state and an extended state; when the temporary supporting device is in the folded state, the width of the temporary supporting device is smaller than that of the tunneling device, and the height of the temporary supporting device is smaller than that of the anchor rod drilling device; when the temporary supporting device is in the stretching state, the width of the temporary supporting device is larger than that of the tunneling device, and the height of the temporary supporting device is larger than that of the anchor rod drilling device so that a safe space can be provided for supporting operation of the anchor rod drilling device.

An active net anchoring device for rapid construction belongs to the technical field of natural slope support construction and comprises a plurality of anchor rods connected with each other, every two adjacent anchor rods are connected through a sleeve, one end of each anchor rod is located in a slope, the other end of each anchor rod is exposed, the exposed end of each anchor rod is connected with an active net, each anchor rod is sleeved with an anchor backing plate, and the anchor backing plates are connected with the active net. And the anchor backing plate is arranged above the driving net and is fixed through a nut. The rock slope hole-forming device is high in hole-forming speed, high in safety performance and high in quality assurance rate on a rock slope which is severely weathered and strongly unloaded.

The utility model provides an anchor agent anti -fall device, including anti -fall elastic sheet, flow guide groove, sawtooth and tine, the tine of anti -fall device is in the anchor rod enters anti -fall device and extrusion anchor agent time, makes anchor agent under the action of pressure and tine effect, easy to anchor agent breakage, three anti -fall elastic sheets evenly are arranged in anchor agent anti -fall device cylinder outside, in the anchor rod hole hole inside plays the role of anti -fall, prevents anchor agent from falling from anchor rod hole hole, sawtooth holder sets up in the center of anchor agent anti -fall device, sawtooth holder can be in the tail end of anchor agent, sawtooth holder breaks in the process of anchor rod entering anti -fall device, does not hinder anchor rod to enter, flow guide groove distributes in the inside of anti -fall device, can guide liquid to flow out when anchor agent breaks, this anchor agent anti -fall device installation does not need additional complex equipment, can realize anchor agent and anchor rod step -by -step installation, promotes the convenience of anchor rod support.

The invention provides a coal mine non-repeated advanced hydraulic support for continuous beam rail transportation, which comprises a walking device, a support transportation device and a gate-type support assembly, by arranging the walking device, the gate-type support is transferred on the walking device so as to conveniently reach a coal mine tunnel, and the supports are transported to a specified supporting place one by one by means of the support transportation device, so that the support is convenient to transport. The door-type support can be conveniently unfolded on a supporting operation face, so that in the actual operation process, movement of the walking device, placement of the door-type support on the walking device and movement of the door-type support on the walking device through the support conveying device can be controlled by equipment, and the operation efficiency is improved. The support moving efficiency of assembling, fixing and following the excavation progress of the portal support in a mining operation area is improved, the supporting efficiency is improved, the adaptability of the bottom plate is improved, the roadway is adapted, the construction risk of personnel is reduced, and the labor operation intensity is reduced.

The utility model belongs to the technical field of projection devices, and particularly relates to a mobile internet projection device convenient to install, which comprises a fixed disc and a projector, the projector is arranged at the top end of the fixed disc, a support mechanism is arranged at the bottom end of the fixed disc, and an assembly protection mechanism is arranged at the top end of the fixed disc. According to the mobile internet projection device convenient to install, through the arrangement of the assembly protection mechanism, the projector can be rapidly installed and disassembled, so that the installation stability of the device is improved, the two sides of the projector can be protected, and the safety performance of the device is improved; according to the projector supporting device, the problem that in the background technology, a projector is not easy to mount and dismount quickly, so that the projector has certain limitation is solved, by arranging the supporting mechanism, the projector can be stably supported, the supporting height can be adjusted within a certain range, and the projector supporting device is convenient to use. Therefore, the supporting efficiency of the device is improved.

The utility model discloses a portable mining roadway temporary supporting device, it includes including hydraulic pressure lifting assembly, the fixed end of hydraulic pressure lifting assembly is provided with side support subassembly, connecting component and side joint subassembly, and the lifting end of hydraulic pressure lifting assembly is provided with roof support subassembly, the hydraulic pressure lifting assembly is used for driving roof support subassembly and carries out temporary supporting operation to mining roadway, the utility model realizes having the function of stable support with the folding lateral support structure, and under the side support effect of multiple side support subassembly makes the supporting stability of device in the supporting process is higher, also realized having the function of the group support that expands from single body support, and the dismounting of each supporting part is more convenient, also realized having the function of elastic support of let pressure, and the elastic support process is more stable, not only makes the carrying and use of device more convenient, also guarantees the supporting effect of device, is suitable for widely using and using.

This invention relates to the field of clamping equipment technology, and discloses a clamping device and method for automatic machining of differential housings. The device includes a base plate, a hollow plate fixedly connected to the side wall of the base plate, a grooved plate rotatably connected to one end of the hollow plate, and an equipment cavity, a movable cavity, and a driving cavity formed inside the base plate. An air duct assembly and a driving assembly are fixedly connected to the side wall of the equipment cavity. An air transmission assembly is slidably connected inside the movable cavity, and an internal gear plate is rotatably connected to the inner surface of the driving cavity. Through the coordinated use of the air transmission assembly, the internal gear plate, the first passive assembly, the second passive assembly, and the third passive assembly, the device can perform both fixed and repositioning operations on the differential housing, as well as rotational cutting operations, by rotating the differential housing in both forward and reverse directions using a first motor. It can also reposition the air transmission assembly, thereby reducing energy consumption and improving the functionality of the device.