348results about How to "Simple and flexible structure" patented technology

The invention discloses a reservoir culvert detection robot. A special pipeline robot aiming at the reservoir culvert detection work is not designed in the prior art. The reservoir culvert detection robot comprises a driving wheel group, a steering system, a connecting mechanism, a driven wheel group and a control system, wherein the driving wheel group and the driven wheel group are connected through the connecting mechanism, the steering system controls the steering of the driving wheel group, the driving wheel group comprises wheel leg mechanisms and a transfer system, the three wheel leg mechanisms are uniformly distributed and arranged on the side wall of a first main installing plate, the transfer system is arranged in the center part of the first main installing plate, and drives the three wheel leg mechanisms, and the steering system comprises a rope, a steering rope roller, a steering motor, a steering reset spring, an initial position stop pin, a pull arm and a terminal position stop pin. The reservoir culvert detection robot is suitable for the work environment of a reservoir culvert, and can do autoroatation around the pipeline center in situ in the pipeline for avoiding obstacles; two rows of wheel groups including the front row and the back row and a telescopic diameter change mechanism are adopted, the telescopic quantity of each wheel leg is respectively independent, and the pipeline diameter change adapting capability is high.

The invention discloses a spiral push type low temperature pyrolysis carbonation furnace which comprises a bracket and a furnace body, wherein the furnace body is provided with a feed port and a discharge hole; the furnace body comprises an inner heating cylinder and an outer heating cylinder which are sleeved together; the tail end of the inner heating cylinder penetrates out of the outer heating cylinder; the tail end of the inner heating cylinder is provided with an tail gas outlet; the outer heating cylinder is provided with a high temperature smoke gas inlet and a high temperature smoke gas outlet; a plurality of deflectors are misplaced on the inner wall of the outer heating cylinder and the outer wall of the inner heating cylinder; and a plurality of hollow material transportation screws penetrate through the furnace, and the inside of the furnace body is provided with an electricity or smoke gas heating device. Because a double-layer tube-in-tube structure and a spiral push type pyrolysis carbonation mode are adopted and the tail gas outlet is arranged at the tail end of the inner heating cylinder, the spiral push type low temperature pyrolysis carbonation furnace has the characteristics that raw material adaptability is wide and a structure is simple, tail gas waste heat and low-grade pyrolysis carbonized gas can be fully utilized, thermal efficiency is high, and the like.

The disclosed sensor is gas sensor of optical crystal fiber with hollow core. The air sensor includes light source, light guiding gas-cell light path, reference light path of general optical fiber, and signal conversion part. Through general optical fiber, and light splitter, the light guiding gas-cell light path is connected to light source. Being setup at another end of the light guiding gas-cell light path and the reference light path, the said signal conversion part including photodiode, and phase-locked amplifier is in use for providing signal for circuit of monitoring external gas concentration. Optical crystal fiber with hollow core of containing gas permeable micropores in micro level is adopted in the light guiding gas-cell. Comparing current optical fiber gas sensor, the invention possesses advantages: simple system, easy of controlling absorbed light path, and coupling loss. The invention raises effective absorbed light path, and response seeped of parts so as to suit monitoring gas in site.

As apparatuses which construct a ring network, a structure including a monitoring apparatus and other relay apparatuses is employed. The monitoring apparatus monitors only a ring status of such a ring network to which the own monitoring apparatus belongs. The monitoring apparatus periodically transmits health check frames from ring ports thereof respectively so as to monitor whether or not the transmitted health check frame has been received by the ring port located opposite thereto. Also, in a structure of a multi-ring network having a shared link, auxiliary health check frames are periodically transmitted from two sets of shared apparatuses respectively with respect to a monitoring apparatus of a shared link non-monitored ring network. The monitoring apparatus also monitors the auxiliary health check frames in combination with the health check frames in order to avoid an occurrence of a loop which bridges a plurality of ring networks.

The invention provides a panel with pressure sensing. The panel with the pressure sensing comprises a cover plate, wherein the cover plate defines a display area and non-display areas; the display area is used for image displaying, and other areas except the display area are the non-display areas; the non-display areas comprise a key area; and one side, which is different from a pressing operation surface, of the cover plate corresponding to the key area is provided with at least one pressure sending electrode. The key area comprises at least one key, the at least one pressure sensing electrode is arranged by corresponding to at least one key, the keys can set different execution functions under different pressing force value conditions, and therefore, key functions are enriched.

The invention discloses a biofilter. The biofilter comprises a filtering basin, wherein a water inlet and a water outlet are formed in the side walls of the filtering basin, a porous medium filtering layer is arranged at the bottom of the filtering basin, a biological dielectric layer is arranged at the top of the porous medium filtering layer, a rainwater collecting pipe is embedded in the porous medium filtering layer, a plurality of rainwater inlets are formed in the wall of the rainwater collecting pipe, one end of the rainwater collecting pipe is connected with a cleaning pipe, and the other end is connected with a draining pipe which is connected with the water outlet; a cover plate is arranged at the top of the filtering basin, and a biological dielectric layer plant seed inlet is formed in the cover plate. According to the biofilter, the structures such as the biological dielectric layer, the porous medium filtering layer and the like are used for purify rainwater, pollutants such as particulate matters, nitrogen, phosphorus, heavy metal, grease and the like in the rainwater are removed effectively, the purified rainwater can penetrate into the underground and be drained into natural water or be recycled; the biofilter further has an environment beautifying function and can operate automatically without external energy.

The invention relates to a carrier-free grid-array IC (Integrated Circuit) chip packaging part and a preparation method thereof. The carrier-free grid-array IC chip packaging part comprises inner pins, IC chips, soldering pads, bonding lines and plastic-sealed bodies, wherein the inner pins are arranged into a multi-row matrix type on the front surface of the packaging part, and multiple rows of exposed round gold-plated contacts approximately to squares are arranged on the back surface of the packaging part; the IC chips are positioned on the upper surfaces of the inner pins, the inner pins and the IC chips are bonded through glue membranes, the soldering pads on the IC chips are connected with the inner pins through the bonding lines, and the glue membranes, the IC chips, the bonding lines and the edges of the inner pins are surrounded by the plastic-sealed bodies to form an integrated circuit. In the invention, since spherical array contacts approximately to squares are adopted, the structure is simple and flexible, and the radiating effect is good. The finished-product rate of a copper lead frame (L / F) is high, and the material cost is lowered. Since the copper lead frame (L / F) is adopted for replacing a ceramic baseplate, a PCB (Printed Circuit Board) baseplate or a BT (Bismaleimide Triazine) baseplate, the complicated layout design is saved, the designing and manufacturing cycle is shorter, the pilot production process is quickened, products are promoted to be on the market in advance, and the first market opportunity is obtained.

The invention provides a pipeline cutting and holing fixture and a holing process. The pipeline cutting and holing fixture comprises a frame mechanism crossing a pipeline, a centering mechanism used for locating the central point of an intersecting hole, a rotation mechanism and a cutting head, wherein the centering mechanism comprises a rotary lead screw which is vertically arranged, arranged on the frame mechanism in a penetrating manner, and capable of lifting up and down; the rotation mechanism comprises a rotary arm, and the rotary arm is transversally arranged and sleeves the rotary lead screw; and the cutting head is installed on the rotary arm, and driven to carry out intersecting line movement on the outer circumferential wall of the pipeline during rotation. According to the pipeline cutting and holing fixture and the holing process, a station has no need to be fixed, the operation of detachment, movement and cutting can be carried out at any time only by enabling the frame mechanism to cross the outer circumferential wall of the pipeline; the pipeline cutting and holing fixture is simple and convenient to operate, and high in applicability; and moreover, the cost of machining the intersecting hole is lowered.

The invention belongs to the mechanical manufacture field and relates to a parallel 3-DOF drive mechanism of a spindle head. A fixed platform is provided with 3 drive moving pairs distributed according to the position of the apex of an equilateral triangle; each drive moving pair is connected with an input member bar which is driven by the drive moving pair; the other end of the input member bar is connected with a globe hinge and is connected with link blocks via the globe hinge; a movable platform is provided with 3 uniformly aligned driven moving pairs which are chutes; 3 link blocks are respectively installed in the chutes of the driven moving pairs and can move horizontally in the chutes; a spindle is arranged in the central position of the movable platform. By adopting parallel structure, the drive mechanism obviously improves the rigidity of the spindle head structure; in addition, the drive mechanism has the characteristics of having small movement mass, good dynamic property and high movement precision, moving and decoupling along the moving direction, and is suitable for independent working and combined machining in coordination with other devices.

The invention discloses a multi-stage rainwater biological treatment device which comprises a presedimentation pool and a filter pool. A water inlet is formed in the presedimentation pool, a drainage opening is formed in the filter pool, and an overflow baffle structure is arranged between the presedimentation pool and the filter pool. A porous medium filter layer is arranged at the bottom of the filter pool, a biomedium layer is arranged at the top of the porous filter medium layer, a rainwater collecting pipe is buried in the porous filter medium layer, a plurality of rainwater inlets are formed in the pipe wall of the rainwater collecting pipe, one end of the rainwater collecting pipe is connected with a cleaning pipe, the other end of the rainwater collecting pipe is connected with a drainage pipe, and the drainage pipe is connected with the drainage opening. A cover plate is arranged at the top of a multi-stage treatment pool, and provided with a biomedium layer plant seed inlet. The multi-stage rainwater biological treatment device integrates gravity settling, screening, filtering and biological treatment functions to carry out multi-stage treatment on rainwater, after sediment of the rainwater is removed through the presedimentation pool, preliminary purification is carried out on the rainwater through the overflow baffle structure, further filtering and biological treatment are carried out on the rainwater through the biomedium layer, plants and the porous medium filter layer, and therefore pollutants are effectively removed.

A wind-driven electric generator with a vertical rotary shaft is composed of a vertical rotary shaft, a wind driven wheel unit consisting of upper and lower wheels, upper and lower fixing discs and upper and lower bearings, a supporting frame consisting of 2N vertical columns, where N=2-6, and 2N wind guiding plates linked to said vertical columns (one to one) and their guiders.

The invention provides an electric heating boiler heat storage and heat supply system supplied with heat from abandoned wind and abandoned light and using methods for the electric heating boiler heat storage and heat supply system and belongs to the technical field of heat supply. The electric heating boiler heat storage and heat supply system comprises a high-voltage electric boiler subsystem, a heat storage subsystem and a user side subsystem. A primary side heat exchanger is arranged between the high-voltage electric boiler subsystem and the heat storage subsystem. A user side heat exchanger is arranged between the heat storage subsystem and the user side subsystem. The high-voltage electric boiler subsystem is supplied with power through a wind power and solar power generation power source and a high-voltage power distribution reserve power source. According to the scheme, through the structure, various heat-supply and heat-storage using methods such as heat storage through a high-voltage electric boiler, simultaneous heat storage and heat supply through the high-voltage electric boiler, heat supply through a heat storage device and direct heat supply through the high-voltage electric boiler can be achieved. In addition, the electric heating boiler heat storage and heat supply system has numerous advantages of simple structure, flexible heat supply and heat storage, and the like.

The invention discloses compressing type refrigeration and solution compound gas dehumidification system. The compressing type refrigeration system includes compressor, and orderly connected with condenser, throttle valve and evaporator. The solution system includes moisture separator, regenerator, and pump connection. They are independent system. Thus the gas can be treated independently to avoid solution corrosivity for refrigeration system. It has the advantages of simple structure and good moisture extraction effect.

The invention discloses a mechanical arm on a head-washing machine. The mechanical arm is composed of a mechanical arm case, a mechanical-arm rotating shaft, a massage rod and silica gel fingers. The mechanical arm is controlled by using a microcomputer which respectively can control the length of stretching, the strength of massaging and the time of massaging, and during the working period, the silica gel fingers carry out circulative rotation and telescopic kneading and swing upwards and downwards centering on the shaft. The mechanical arm disclosed by the invention is widely used on a head-washing machine.

The invention discloses a surgical hand foot nursing support. The surgical hand foot nursing support comprises a foundation, wherein the lower surface of the foundation is fixed with supporting legs, the upper surface of the foundation is fixedly equipped with a hydraulic jack, the lower portion of the hydraulic jack is equipped with a rising and landing pedal, a top end of a telescoping rod of the hydraulic jack is fixedly connected with a ball head rod, the lower portion of the ball head rod is connected with a rotation sleeve, the rotation sleeve is equipped with a first fastening bolt, the rotation sleeve is fixedly connected with one end of the telescoping rod, the other end of the telescoping rod is connected with a rocking arm through a hinge, the middle of the telescoping rod is equipped with a second fastening bolt, the ball head rod is connected with one end of the rocking arm through a ball head mechanism at the top end, the other end of the rocking arm is connected with a first supporting block, the first supporting block is connected with a second supporting block through a screw, and an elastic cotton pad is arranged between the first supporting block and the second supporting block. The surgical hand foot nursing support employs the mobile foundation and further has advantages of simple and flexible structure and great comfort and practicality.

The invention discloses a non-coherent spread spectrum communication device with variable data rate, which relates to realizing non-coherent spread spectrum modulation and demodulation data transmission with variable data rate bit by bit, configurable spread spectrum code rate, strong anti-Doppler performance and fast synchronization speed under the condition of low signal-to-noise ratio. Frequency sweep, parallel partial coherence and incoherent accumulation are used to realize the fast acquisition of incoherent spread spectrum signals with large frequency offset range, and digital average filter and square filter are used to achieve symbol timing synchronization of incoherent spread spectrum signals. The invention has high integration degree, strong portability, light weight and low power consumption, small commissioning workload of the whole machine, simple and flexible interface, easiness in expanding, and stable and reliable performance, the circuit is integrated in a 292mm long,185mm wide and 28mm high square terminal, weighing 0.6 kg, which is especially suitable for the application of non-coherent spread spectrum modulation and demodulation channel transmission terminal inairborne satellite communication system with limited volume and weight.

The invention discloses a rotation platform for a helicopter rotor anti-icing / de-icing test in an ice wind tunnel. The rotation platform comprises a rotor unit, a rotation unit and a bearing unit, wherein the rotor unit comprises an adjustable attack angle coupling, a stationary shaft and a rotor test piece fixing rack for connecting the adjustable attack angle coupling and the stationary shaft; and adjustment holes capable of adjusting the attack angle of the rotor test piece fixing rack are formed in the adjustable attack angle coupling. In the invention, the structure is simple and flexible; and through corresponding connection between the adjustment holes at different positions on the adjustable attack angle coupling and fixing holes in the rotor test piece fixing rack, the angle adjustment with an interval of 10 degrees can be realized for each rotor test piece fixing rack, and the attack angle range of the rotor unit is flexibly adjusted. Moreover, after refitting the rotor test piece, the parameters such as surface and icing condition of the inside and surface can be measured. Meanwhile, the energy consumption is low, and the feasibility is high.

The invention discloses an on-line automatic monitor for total lead. The monitor comprises a peristaltic pump, liquid level detectors, a measuring cup, a ten-hole multi-position valve, a water sample, a reagent, distilled water, a digestion cuvette, heating resistance wires and a dual-wavelength colorimetric device, wherein the water sample, the reagent and the distilled water are connected with distribution ports of the ten-hole multi-position valve respectively; the lower end of the measuring cup is connected with a public port of the ten-hole multi-position valve; the peristaltic pump is connected with the upper end of the measuring cup through a pipeline; the liquid level detectors are arranged on the measuring cup; and two distribution ports of the ten-hole multi-position valve are connected with liquid inlets / outlets of the digestion cuvette and the dual-wavelength colorimetric device respectively. The on-line automatic monitor for the total lead determines lead by using highly sensitive porphyrin color development agents, is combined with dual-wavelength colorimetry, and has the characteristics of high selectivity, accuracy and sensitivity.

A laser beam optical fiber transmission device of a laser sodium guide star technology is characterized in that: the device uses a cylindrical multimode optical fiber for producing a conical shape by adopting the melt-pulling method for pulling, then a table is formed by grinding, the device comprises: a cylindrical multimode optical fiber part and a conical table optical fiber part, the conical table optical fiber part is formed at the tail end of the cylindrical multimode optical fiber by direct processing, the other end of the cylindrical multimode optical fiber is an input end of a laser beam, the other end of the conical table optical fiber is an output end of the laser beam, the length of the cylindrical multimode optical fiber is equal to 1 to 1.2 times of the distance from a laser to a transmitting telescope; the radius of a fiber core of the conical table optical fiber which is arranged at the thick end is equal to the radius of the fiber core of the cylindrical multimode optical fiber, and the radius of the fiber core of the conical table optical fiber which is arranged at the thin end meets the single-mode condition for transmitting the laser by the optical fiber. The optical fiber transmission device has the advantages of simple and flexible structure and low cost, the quality of the output light beam is close to the diffraction limit, at the same time, the optical fiber transmission device can effectively overcome the non-linear scattering and other effects during the optical fiber transmission, thus achieving the purpose of transmitting the higher laser power.

The invention relates to a method and a device for automatically controlling frequency in a TD-SCDMA system. The method comprises the following steps: firstly, respectively correlating and accumulating first half sections and second half sections of Midamble codes / SYNC_DL codes in input data on each path of a small area network and the first half sections and the second half sections of basic Midamble codes / SYNC_DL codes which are processed by conjugating and copying so as to obtain correlation results of the first half sections and the second half sections; next respectively carrying out conjugate multiplication on the correlation results to obtain correlation phase differences; then merging the phase differences of two paths of a cell; and finally carrying out moving average on a mergedphase difference to obtain an automatic frequency control result. The device comprises a correlation and segmented accumulation operation module, a time domain multiplication calculating module, a two-path merging module and a multi-subframe averaging module. The invention not only has accurate frequency discrimination, low hardware expenditure and flexible and smart design, but also can meet therequirement on performance of a system.

The invention discloses a mixed-mode AGC loop and belongs to the field of electronic technology. The AGC loop comprises a VGA module, a peak detector, a variable speed integrator, a comparator, a counter, a threshold control module and a gain controller; the VGA module is connected with the peak detector, the variable speed integrator and the gain controller; the peak detector is connected with the VGA module and the variable speed integrator; a threshold controller is connected with the variable speed integrator; the variable speed integrator is connected with the peak detector, the threshold controller, the VGA module and the comparator; the comparator is connected with the counter and the variable speed integrator; the counter is connected with the comparator and the gain controller; and the gain controller is connected with the counter and the VGA module. By implementing analog and digital dual-mode control to the differential intermediate frequency signal gain, the invention leads the output signal amplitude of the VGA module not to be changed along with the change of the input signal thereof; and the circuit structure of the AGC loop is simple and flexible.

The invention provides an eight-degree-of-freedom surgery mechanical arm comprising a closed-loop connecting rod. The eight-degree-of-freedom surgery mechanical arm comprises a position adjustment assembly, a posture adjustment and a surgery instrument, wherein the posture adjustment assembly is connected onto the position adjustment assembly, the posture adjustment assembly has the characteristicof telecentric fixed point, the surgery instrument is connected onto the posture adjustment assembly, the position adjustment assembly is used for adjusting the position of the telecentric fixed point, and the posture adjustment assembly is used for adjusting the posture of the surgery instrument. The eight-degree-of-freedom surgery mechanical arm has the beneficial effects as follows: a hinged arm is connected with a slide rail assembly, the position of the telecentric fixed point can be adjusted at multiple degrees of freedom, the posture adjustment system can adjust postures of the surgeryinstrument around the telecentric fixed point in multiple directions to drive the surgery instrument to realize telecentric movement required by a minimally invasive surgery, the structure is simpleand flexible, and small space is occupied. The system comprises a closed-loop connecting rod module, a drive group required by joints is effectively moved forwards, is simple in structure, stable inmovement, decoupled in posture and convenient and flexible to drive.

The invention discloses a method and a device for removing heavy metals and POPs in organic wastes by electromagnetic reinforcement. The method comprises the following steps of: firstly preparing theorganic wastes into slurry; applying a magnetic field to the slurry to make sure that the heavy metals and the POPs in the slurry are transformed into a water solution state; separating the organic waste slurry into two components; afterwards applying an electric field to the slurry, migrating water molecules and the heavy metals and POPs which are continuously transformed into the water solutionstate to a cathode region of the electric field under the effect of electro-migration, and meanwhile migrating the components of the organic wastes to an anode region of the electric field so as to realize separation of the two components; and filtering and dehydrating the organic waste slurry to finally obtain harmless low-water-content organic wastes. The method and the device disclosed by the invention can be used for efficiently removing large-particle impurities, some heavy metals and the POPs in the organic wastes, can also reduce the water content of the organic wastes to 30% to 50%, thereby overcoming the defects that a traditional organic waste treatment method is low in efficiency, takes effect slowly and has no oneness.

The invention relates to a floating platform capable of suspending in water, a device of generating electricity by means of wave energy of water. Simply, the device is composed of large and small floating tables with different functions and divisions of work. The combination can be diversified, and in particular, the most typical structure of an integral functional unit is formed by four secondaryfloating tables which are arranged symmetrically on a primary floating table in a cross manner. Compared with wind power generation, the device without a firm foundation is conveniently built, and isexcellent in windproof and wave-resisting performances as the device is attached to the water surface. Compared with solar power generation, the layout of the device does not occupy limited land area, and is also not limited by lighting conditions in cloudy days at night. Furthermore, the floating platform formed on the water surface combines the expanded land area and wind energy or solar energy, so that the device is a possible vision. In a word, the floating wave power generation device not only is suitable for islands or drilling platforms far from the main land, but also has a glorious prospect if being applied to peri-urban areas rich in coastal tide or wave resource and exuberant in demand on energy source on a large scale.

The invention discloses a phase difference calibrating system for a rotating shaft, comprises two technical schemes and belonging to the technical field of surveying or metrology, wherein one technical scheme is a rotating-shaft rotating speed calibrating system for calibrating a device used for measuring the rotating shaft rotating speed, and the other technical scheme is a rotating-shaft phase difference calibrating system for calibrating a device used for measuring the phase difference of the rotating shaft. The technical schemes disclosed by the invention have the advantages that: the calibrating system is beneficial to overcoming of the defects that the rotating speed and phase difference (torque) testers cannot be calibrated in the prior art, supplies a calibrating device and calibrating precisions thereof for the rotating speed and phase difference (torque) testers of the rotating shaft, has practical significance, and can be used for calibrating the rotating-shaft rotating speed testers, such as a capacitive grating, an optical grating, a Hall sensor, a magnetic grating, an infrared device, a photoelectric device, a photoelectric encoder and the like, and the rotating-shaft phase testers, such as a capacitive grating, an optical grating, a magnetic grating and the like. The calibrating system disclosed by the invention has a simple and flexible structure, convenience for operation and wide application range, the rotating speed of the rotating shaft is adjustable, sleeves are replaceable and the distance between every two sleeves is also adjustable.

The invention discloses a modular banknote outlet machine. The modular banknote outlet machine is formed by combining the following module devices which are arranged independently and relatively: a banknote storing and transferring device and at least group of banknote storing devices which are arranged on the bottom portion in parallel; an upper support which is arranged on the upper portions of the banknote storing and transferring device and the banknote storing devices; a banknote discrimination device and a banknote recovery device which are arranged in parallel on the upper support in a slide assembly manner, wherein the banknote discrimination device is located above the banknote storing and transferring device, and the banknote recovery device is located above the banknote storing devices; and a banknote stacking and transferring device, a banknote multi-channel transferring device and front and rear interchangeable racks are arranged in parallel on the upper support, wherein the banknote multi-channel transferring device is located between the banknote stacking and transferring device and the front and rear interchangeable racks, and the front and rear interchangeable racks are interchangeable plates, fixed on side surfaces of the banknote multi-channel transferring device, and is interchangeable with the banknote stacking and transferring device in a left-and-right manner. The device adopts an independent modular design, has advantages of simple structure, easy installation, easy maintenance, easy transportation and easy assembly line volume production.

The invention discloses an automatic spraying device for a porcelain insulator. The automatic spraying device comprises a feeding mechanism and a spraying mechanism, the feeding mechanism is composedof a material base, a first hopper, a second hopper, a supporting plate, a control panel, a conveying motor, a feeding sliding groove, a feeding screw rod, a feeding sliding block, a conveying air cylinder, a servo motor, a connecting plate, a fixing plate, clamping sliding grooves, clamping plates and clamping air cylinders, and the supporting plate is fixedly connected to one end of the materialbase. According to the automatic spraying device, in the working process, the porcelain insulator is clamped through the clamping plates and the clamping air cylinders, the angle position of the porcelain insulator is adjusted through the servo motor, so that the porcelain insulator is in a vertical state and then is conveyed to a designated position through the conveying motor, manual feeding isavoided, and therefore the labor intensity of workers is lowered, and the feeding speed is increased; and a steering motor and a lifting air cylinder are arranged, so that materials can be conveniently and continuously rotated and replaced, and therefore the clamping time is shortened, and the processing and replacing efficiency is greatly improved.

The invention relates to a cold-hot impact three-stage coal breaking device which comprises a bearing pedestal, a walking mechanism, a liquid nitrogen storage steel bottle, an air vortex tube, a water storage tank, a heat exchanger, an air heater, a jet pump, a jet fan, a liquid nitrogen boosting pump, an air heating pipe, a water cooling pipe, a liquid nitrogen cooling pipe and a jet bit, wherein the lower surface of the bearing pedestal is connected with the walking mechanism; the liquid nitrogen storage steel bottle, the air vortex tube, the water storage tank, the heat exchanger, the air heater, the jet pump, the jet fan and the liquid nitrogen boosting pump are all mounted on the upper surface of the bearing pedestal through a sliding rail and are connected with the upper surfaces of the bearing pedestal in a sliding manner. The implementing method comprises four steps of prefabricated hole drilling, prefabrication of a coal breaking group, impact coal breaking operation and drilled hole sealing. According to the cold-hot impact three-stage coal breaking device, on one hand, the working efficiency of drilling operation and the drilling permeability-increasing quality are improved, and the gas extraction is reduced; on the other hand, the gas extraction operation safety and the reliability are improved.

The invention discloses a joint type wall-climbing robot applicable to a curved surface. The joint type wall-climbing robot comprises a rack and a control system, wherein the rack is divided into an upper rack and a lower rack; the lower rack is mounted at the lower end of a center shaft of the upper rack through a hinge structure and a rotating device; the hinge structure is connected with the rotating device; an A system leg structure is connected in the perpendicular direction of the lower side of the upper rack; a B system leg structure is connected in the perpendicular direction of the lower side of the end part of the lower rack; corresponding circuits are controlled through the control system so as to control behavior of the robot. The robot adjusts own postures constantly in the moving process according to changes of the curvature of the curved surface to better attach to the curved surface to move, and has very high adaptability to the curved surface. With the adoption of the foot movement mode, various tasks can be well completed no matter for moving or barrier crossing, and accordingly, the joint type wall-climbing robot applicable to the curved surface has the wide application field and range.

As apparatuses which construct a ring network, a structure including a monitoring apparatus and other relay apparatuses is employed. The monitoring apparatus monitors only a ring status of such a ring network to which the own monitoring apparatus belongs. The monitoring apparatus periodically transmits health check frames from ring ports thereof respectively so as to monitor whether or not the transmitted health check frame has been received by the ring port located opposite thereto. Also, in a structure of a multi-ring network having a shared link, auxiliary health check frames are periodically transmitted from two sets of shared apparatuses respectively with respect to a monitoring apparatus of a shared link non-monitored ring network. The monitoring apparatus also monitors the auxiliary health check frames in combination with the health check frames in order to avoid an occurrence of a loop which bridges a plurality of ring networks.