13555 results about "Protective shielding" patented technology

The utility model relates to the technical field of laser cutting, in particular to a laser cutting machine with a protection device, which can protect sparks generated by cutting, prevent the sparks from splashing to the periphery, reduce the possibility of injury to workers and improve the protection intensity to the workers. Comprising a workbench, a plurality of supporting legs and a protective cover, the supporting legs are fixedly installed at the four corners of the bottom end of the workbench respectively, non-slip mats are arranged at the bottom ends of the supporting legs, and the protective cover covers the top end of the workbench; the laser cutting device further comprises a laser cutting head, a cutting mechanism, a fixing and clamping mechanism, a protection mechanism and a waste chip collecting assembly, the cutting mechanism is installed at the top end of the interior of the protection cover, the laser cutting head is installed at the output end of the cutting mechanism, the fixing and clamping mechanism is installed at the top end of the workbench, and the protection mechanism is located outside the laser cutting head. The waste chip collecting assembly is installed at the output end of the cutting mechanism and installed at the bottom end of the workbench.

The invention relates to the field of machining tool tables, and discloses an automatic female needle assembling machine which is used for installing a female needle to a plastic shell and comprises a rack, the rack comprises an operation table and a protective cover, the protective cover is arranged on the operation table, and an operation space is formed between the protective cover and the operation table; the protective cover comprises a safety door capable of being opened and closed, the safety door comprises a door plate, a safety sensor and a door lock, the safety sensor and the door lock are both arranged on the door plate, the door lock has locking force so that the safety door can be in a closed state, and when external force exceeding the locking force is used for opening the door plate, the door lock is locked. After the safety sensor detects that the position of the door plate is changed, the automatic female needle assembling machine is controlled to stop working; and the manipulator is positioned in the operation space and is positioned on the operation table.

The invention relates to the technical field of air filtration, in particular to an indoor air purifier with a self-cleaning filter screen. Comprising a base and a filter cartridge on the upper surface of the base, the upper port of the filter cartridge is fixedly connected with a top seat with an air outlet hole; the air outlet hole is communicated with the inner side of the filter cartridge; the inner wall of the air outlet hole is fixedly connected with a fan; the upper end opening of the air outlet hole is fixedly connected with a protective net; the outer diameters of the top seat and the base are greater than the outer diameter of the filter cartridge; the outer side of the filter cartridge is sleeved with a protective cover with air holes; a spiral plate is movably connected between the inner side of the protective cover and the outer side of the filter cartridge; the inner edge of the spiral plate is in contact with the outer wall of the filter cartridge; a collecting tank is arranged in the base; according to the air purifier, the spiral plate rotates on the outer wall of the filter cartridge, so that dust and fibers formed after filtration on the outer wall of the filter cartridge are rotated away by the rotating spiral plate, the cleanness of the filter cartridge is ensured, and the filtering and purifying effect of the air purifier on surrounding air is improved.

The invention provides a multifunctional electric energy metering box, and relates to the technical field of electric energy metering boxes, the multifunctional electric energy metering box comprises an electric energy metering box, communication grooves are formed in two side walls of the electric energy metering box, first inner grooves are formed in the two communication grooves, and first heat dissipation openings and second heat dissipation openings are formed in two side walls of the electric energy metering box; the two second heat dissipation openings are located below the two first heat dissipation openings, an electric energy metering box door is hinged to the electric energy metering box, an observation window and a control panel are arranged on the electric energy metering box door, a containing groove is formed in the side wall of the electric energy metering box, a protective cover is fixedly installed on the side wall of the electric energy metering box, and the protective cover is located over the containing groove. The top of the inner wall of the electric energy metering box is fixedly provided with a fixed box body. The self-adaptive mechanism of the equipment reduces faults caused by overheating or moisture, reduces the maintenance cost, protects electrical elements, ensures the stable operation of the whole system, and improves the reliability and stability of the equipment.

The invention relates to the technical field of combustible gas detectors, in particular to a combustible gas detector with an underground Internet of Things function, which comprises a gas exchange seat, a mounting mechanism rotatably connected to the bottom of the gas exchange seat, a combustible gas detector main body fixedly mounted at the bottom of the gas exchange seat, and a fixing frame fixedly connected to the bottom of the gas exchange seat. A movable frame is arranged on the fixed frame in a sliding fit mode, a protective cover is rotatably connected to the interior of the movable frame, an automatic maintenance mechanism is rotatably connected to the movable seat, and in the using process of the combustible gas detector, dust on the surface of the gas sensor is cleaned and maintained regularly through the automatic maintenance mechanism; the dust on the surface of the gas sensor can be automatically cleaned by utilizing the brush frame which rotates and swings in a reciprocating manner, the sensor can accurately read the gas concentration, the possibility of false alarm and missing alarm is reduced, the manual cleaning frequency is reduced through an automatic maintenance mechanism, and the labor cost and the maintenance workload are reduced, so that the service life of the sensor is prolonged.

The utility model relates to the technical field of core-spun yarn feeding, in particular to a core-spun yarn feeding device which comprises a base plate, a supporting frame is fixedly installed at the bottom of the base plate, a protective cover is fixedly installed at the top of the base plate, and limiting grooves which are symmetrically distributed are formed in the rear side of the inner wall of the protective cover. And adjusting screw rods are rotationally mounted in the two limiting grooves. According to the cored wire feeding device, the base plate, the supporting frame, the protective cover, the guide wheel, the fixing frame, the fixing plate, a worm, a worm gear, an adjusting lead screw, a conveying wheel, a first motor, a mounting plate, a pressure sensor, a movable frame, a third motor, a movable block, a tensioning wheel and a limiting groove are used in cooperation; the pressure control of the device on the core-spun yarn can be achieved, the situation that the pressure is too large or too small is avoided, the practicability of the device is improved, and stable conveying of the core-spun yarn is facilitated.

The invention relates to the technical field of cable protection pipe performance testing, in particular to a cable protection pipe performance testing device. The invention provides the performance testing device for the cable protection tube, which can switch dry and wet environments to test the bending resistance of the protection tube so as to compare and detect the bending resistance of the protection tube under the dry and wet conditions. A cable protection pipe performance testing device comprises a workbench, a protective cover and the like, and the protective cover is connected between the upper sides of the front portion and the rear portion of the workbench. A first driving motor in a first driving assembly is started to drive a first driving lead screw to rotate, so that a solution cylinder moves along a first guide rod, an area filled with water is moved to the position below a cable protection pipe, and then a pressing plate presses the cable protection pipe downwards into the water for testing; and the bending resistance of the protection tube can be tested by switching the dry and wet environments, so that the bending resistance of the protection tube under the dry and wet conditions can be compared and detected.

The invention, which relates to the technical field of the motor, discloses a variable-frequency and variable-speed permanent magnet motor of a stator core heat dissipation structure without a casing, comprising a stator core, an end cover, a motor shaft, a rotor, an axial fan, a heat dissipation channel, a spacer ring, a heat dissipation port, a protective cover, a baffle plate and a mounting seat, the baffle plate is provided with a communication port corresponding to a mounting cavity and the heat dissipation port; the low-temperature shrinkage stress prevention assembly is mounted on the baffle and used for driving the baffle to rotate, so that the opening part of the heat dissipation opening is opened and closed; and the air flow adjusting assembly is arranged on the mounting seat and is used for adjusting the air flow in the heat dissipation channel based on the rotating speed of the motor shaft. According to the invention, the air flow adjusting assembly is used for adjusting the air flow rate in the heat dissipation channel when the rotating speed of the motor shaft changes, so that the air flow rate in the heat dissipation channel is increased when the rotating speed of the motor shaft is reduced, and thus the air flow rate in the heat dissipation channel is relatively high when the rotating speed of the motor shaft is reduced; and therefore, the influence on the gas flowing effect is small.

The invention belongs to the technical field of integrated circuit board manufacturing, and particularly relates to a pressing device for an integrated circuit board, which comprises a cabinet body and a protective cover arranged above the cabinet body, a lower pressing plate and an upper pressing plate which are used for pressing the integrated circuit board are mounted in the protective cover, the lower pressing plate is arranged in a square frame fixedly arranged on the top surface of the cabinet body, and the upper pressing plate is connected with a power driving unit arranged in the protective cover; a plurality of heat conduction parts are mounted on the corresponding surfaces of the upper pressing plate and the lower pressing plate in an array manner, and a graphene heating film is mounted in each heat conduction part; a cavity is formed in the upper pressing plate, multiple sets of pressure compensation mechanisms are installed in the cavity in an array mode, and each set of pressure compensation mechanism corresponds to each heat conduction part. According to the invention, stable and high-quality press-fit forming operation of the integrated circuit board can be carried out between the upper pressing plate and the lower pressing plate which independently control the temperature and uniformly apply pressure, so that the press-fit forming quality and the press-fit forming yield of the integrated circuit board can be improved.

The invention relates to a cable branch box, and relates to the technical field of branch boxes, the cable branch box comprises a box body and a box door installed on the box body, and the vertical side surface of the box body is provided with a heat dissipation port; an upper protective cover with an upward opening is fixedly arranged on the inner edge of the opening of the heat dissipation opening of the box body, a lower protective cover with a downward opening is fixedly arranged on the outer edge of the opening of the heat dissipation opening of the box body, a barrier plate is fixedly arranged on the edge of the opening of the lower protective cover, and a plurality of barrier holes are formed in the barrier plate; according to the cable branch box, in the application process of the cable branch box, the possibility that external impurities enter the box body is reduced through the arrangement of the upper protective cover, the lower protective cover and the blocking holes; and high-temperature gas in the box body can be discharged to the outside through the heat dissipation openings and the blocking holes, so that circulation of gas inside and outside the box body is realized, and the heat dissipation performance of the box body is ensured.

The invention relates to the technical field of power transmission line safety monitoring, and particularly discloses a self-adaptive calibration method for an ultrasonic wind speed sensor, which comprises the following steps of: arranging an orthogonal ultrasonic probe array at the top of a tower, and compensating probe offset caused by swinging of a tower body in real time through GNSS / IMU (Global Navigation Satellite System / Inertial Measurement Unit) fusion positioning; integrating a temperature, humidity and pressure sensor and vibration spectrum analysis to construct an environmental parameter compensation model; double-frequency ultrasonic waves are adopted to detect the ice accumulation thickness of the protective cover and correct the sound path distance; deploying a lightweight LSTM model at an edge computing unit to realize minute-level dynamic parameter adjustment; electromagnetic interference is suppressed by combining linear frequency modulation spread spectrum and beam forming technologies; and establishing a three-height-layer wind speed gradient model to generate a galloping early warning. The problem of measurement distortion caused by tower deformation, icing and parameter solidification of a traditional sensor is solved, all-working-condition operation from-40 DEG C to 60 DEG C is supported, and the monitoring reliability in a strong electromagnetic environment is remarkably improved.

An apparatus and methods are provided for a ballistic shield system that enables a shooter to very accurately fire a handgun or a rifle while remaining well protected by the ballistic shield and looking through a bullet resistant viewing window comprising the ballistic shield. A high visibility green laser sight / high output white light illumination system may be mounted onto the firearm for aiming and illumination, with the firearm being precisely but removably mounted to the side of the shield at a location where the firearm's grip can be ergonomically grasped in the shooter's dominant hand, both for operating the firearm and for controlling the position and orientation of the ballistic shield for aiming purposes. An interface that enables the firearm to be precisely but removably mounted to the shield may comprise a quick-draw holster that is mounted directly onto the ballistic shield.

The invention relates to an outdoor protective box-type substation, which relates to the technical field of box-type substations and comprises a box body, a box door hinged to the box body and a box cover covering the top of the box body. A plurality of heat dissipation openings are formed in the opposite vertical side faces of the box body, protective covers with downward openings are fixedly arranged on the outer side opening edges of the heat dissipation openings, and drainage covers with upward openings are fixedly arranged on the inner side opening edges of the heat dissipation openings. According to the invention, the protective cover can shield most of rainwater falling from the side surface and prevent the rainwater from directly entering the heat dissipation opening, so that the risk of rainwater permeation is greatly reduced. Meanwhile, due to the design of the drainage cover, when rainwater infiltrates accidentally, water flow can be guided to flow out upwards along the cover body, and the water flow is prevented from making contact with electrical elements in the box body. The dual protection mechanism not only guarantees the heat dissipation requirement of the box-type substation, but also remarkably improves the rainproof performance of the box-type substation, and ensures the stable operation of equipment under severe weather conditions.

The utility model relates to the technical field of box-type transformer substations, in particular to a self-heat-dissipation protective box-type transformer substation, which comprises a box-type transformer substation body, and a heat dissipation opening is formed in one side of the box-type transformer substation body; the protection mechanism is used for preventing rainwater from entering the box-type substation body; in rainy days, under the action of a guide frame and a connecting pipe, rainwater is guided into a cylinder, a piston plate is pushed to move downwards, a protection mechanism operates, under the action of the piston plate, a fixed rod and a movable rod, a movable plate is pushed to drive the bottom end of a telescopic protection cover to move downwards, and the telescopic protection cover is unfolded to block the fixed frame; the fixing frame is in a closed state in rainy days, so that rainwater is prevented from entering the box-type substation body through the fixing frame and the heat dissipation opening, the protection effect on electrical equipment in the box-type substation body in rainy days is improved, and the risk of damage to the electrical equipment is reduced.

The invention discloses a seismograph external anti-explosion protection structure suitable for coal mine monitoring, and belongs to the technical field of coal mine monitoring, the seismograph external anti-explosion protection structure comprises a supporting seat, a protective cover is fixedly mounted on the upper surface of the supporting seat, a notch is formed in the upper surface of the protective cover, and a movable door is slidably mounted on the inner wall of the notch; a seismograph is arranged on the upper surface of the supporting seat, an induction assembly is arranged on the inner wall of the supporting seat, a protection assembly is arranged on the outer surface of the protection cover, and a positioning assembly is arranged on the upper surface of the supporting seat; according to the device, the sensing assembly is arranged, the ground drilling column is inserted into a hole in the ground surface, then a sensor makes contact with the inner wall of the hole, on one hand, the ground drilling column is inserted into the ground, certain stability can be provided for the supporting base, and it is guaranteed that the supporting base cannot move or shake during vibration; on the other hand, the sensor makes contact with the ground, the monitoring speed is higher during monitoring, and meanwhile the monitoring result is more accurate.

The utility model relates to the technical field of power line plugs, and discloses a power line plug with a bending protection function, which comprises a plug, the surface of the plug is connected with a cable, the two sides of the plug are provided with protection assemblies, each protection assembly comprises a first protection cover, the first protection cover is arranged above the plug, and the second protection cover is arranged above the plug. According to the power line plug with the bending protection function, through the arrangement of the protection assembly, the plug is placed between the first protection cover and the second protection cover, the clamping blocks enter the clamping grooves, the first protection cover and the second protection cover can be stabilized, and the power line plug with the bending protection function is convenient to use. The first protective cover and the second protective cover wrap the plug and the cable, the safety problems of power leakage, short circuit, electric fire and the like caused by bending of a connecting point between the plug and the cable are avoided, and when separation is needed, the rotary knob is rotated to enable the clamping block to be separated from the clamping groove, and separation can be carried out.

The utility model provides an anti-splashing device of a seam filling welding machine, which comprises a protective cover, an avoiding opening is arranged at the upper end of the protective cover, a sliding cover is slidably connected in a sliding groove arranged in the protective cover, an observation window is arranged in a mounting opening arranged on the front side surface of the sliding cover, and locking mechanisms for locking the sliding cover are arranged on the left side and the right side of the protective cover. And a scraping and brushing mechanism is slidably arranged in the sliding cover. According to the anti-splashing device of the seam filling welding machine, the length of the protective cover can be flexibly adjusted according to the height of materials needing seam filling welding, it is ensured that sufficient protection can be provided in welding operation at any height, harm of splashing objects to personnel and the environment is avoided, and the adaptability of the anti-splashing device is greatly improved.

The invention relates to the technical field of pole-mounted circuit breakers, in particular to a pole-mounted circuit breaker with a protective cover, which comprises a circuit breaker body, the circuit breaker body is detachably connected with the protective cover, the top of the protective cover is provided with a through hole for a cable to pass through, and two opposite side walls of the protective cover are provided with access holes in a penetrating manner. The protective cover is movably provided with a door curtain used for shielding the access hole, the door curtain and the protective cover are both provided with locking structures, and the locking structures are used for locking the door curtain on the protective cover. The circuit breaker body is protected through the protective cover, the operation safety is remarkably improved, the service life of equipment is remarkably prolonged, and the movable door curtain is arranged so that an operator can conveniently overhaul the circuit breaker body.

The invention relates to the technical field of glass pot cover machining, and discloses glass pot cover machining equipment and a method thereof.The glass pot cover machining equipment comprises a protective cover, a conveying mechanism, a clamp, a precise recognition control system, an ultraviolet laser system and a man-machine interaction system, a punching machining area is arranged in the middle of the conveying mechanism, and the clamp comprises two full-wrapping clamping arms and two half-wrapping clamping arms; a cooling and dust-settling mechanism is arranged outside the protective cover and comprises a cooling and dust-settling spray head, and a communicating hose which is integrally communicated with the cooling and dust-settling spray head is arranged outside the cooling and dust-settling spray head. In the process of clamping and positioning the glass pot cover, the cooling and dust falling spray head can spray cooling liquid to pre-cool the surface of the glass pot cover, and in the process of laser drilling of the glass pot cover, the cooling and dust falling spray head can conduct cooling and dust falling on the drilling position along with movement of the laser drilling head; and the punching precision is prevented from being influenced by the heat effect generated at the punching position.

The utility model relates to the technical field of road maintenance, and discloses a road crack detection device which comprises a movable cart, a mounting rod fixedly connected to one side of the upper end of the movable cart, a mounting frame clamped to the upper end of the mounting rod, a mounting seat fixedly connected to the lower end of the mounting frame, a camera fixedly connected to the lower end of the mounting seat, and a mounting ring rotatably connected to the mounting seat. One side of the lower end of the mounting ring is fixedly connected with a mounting plate, one side of the mounting plate is slidably connected with a push rod, one side of the push rod is fixedly connected with a fixing frame, one side of the fixing frame is fixedly connected with a cleaning plate, and cleaning cloth is arranged on the cleaning plate; the cleaning plate on one side can rotate with the center of the mounting ring as the axis, and the cleaning plate and the cleaning cloth are attached to the protective cover in the rotating process, so that the protective cover is cleaned, dust on the surface of the protective cover is wiped off, cleanliness of the protective cover is kept, use of the camera is facilitated, and influence on road crack detection is avoided.

The invention relates to the technical field of metal casting, and discloses casting equipment for a GIS conductor and a casting method.The casting equipment for the GIS conductor comprises a mounting frame, a casting motor arranged at the bottom of the mounting frame, a protective cover arranged at the top of the mounting frame, an upper mold arranged in the middle of the mounting frame and a lower mold arranged at the bottom of the upper mold; the injection port is formed in the top of the upper die, the rotating rod is arranged at the bottom of the lower die, the baffle is arranged on one side of the top of the protective cover, and the rotating disc is arranged at the bottom of the rotating rod; the liquid pouring part comprises a driving assembly arranged at the bottom of the baffle. And through automatic pouring of the molten metal, the time and cost of manual operation can be greatly reduced, and therefore the efficiency of the whole production process is improved. And the product quality is guaranteed, it is guaranteed that molten metal is accurately poured into the needed position, and the product quality problem caused by human factors is avoided.

The utility model discloses an elevator driving protection device which comprises a protection cover, a protection mechanism used for protecting a driving part is arranged at the top of the protection cover, a ventilation mechanism used for dissipating heat of the driving part is arranged on the outer side of the protection cover, and side plates in the protection mechanism are fixedly installed on the periphery of the top of the protection cover respectively. Cross rods are fixedly mounted on the inner sides of the side plates; through the arrangement of the protection mechanism, the advantage of shielding and protecting the elevator driving piece is effectively improved, not only can the impact force generated by falling objects above be shielded and protected, but also the falling force of the falling objects can be buffered, so that the driving piece below cannot be damaged, and the service life of the elevator driving piece is prolonged. And the ventilation mechanism can accelerate the ventilation of the driving part in the protective cover below, so that the heat generated inside can be quickly dissipated, the shielding protection can be ensured, the heat dissipation protection can be realized, and the bidirectional protection can be realized.

The invention relates to the technical field of bank auxiliary equipment, in particular to a destroying device with a cleaning function. Comprising a supporting seat, a cutting plate is fixed to the inner side of the top end of the supporting seat, fixing columns are fixed to the four end corners of the top of the cutting plate, a fixing shell is fixed to the tops of the four fixing columns, a protective cover is slidably connected to the outer side of the fixing shell, and cutting-off grooves are formed in the two sides of the top of the cutting plate; a cleaning brush is slidably connected to the position, corresponding to the cut-off groove, of the top of the cutting plate. According to the destroying device with the cleaning function, through cooperation of the supporting base, the protective cover, the adjusting plate, the cutting plate, the cutting blade and the adjusting mechanism, when a bank card needing to be destroyed is located at the top of the cutting plate, the adjusting mechanism works to drive the cutting blade to destroy the bank card on the inner side of the cutting plate; and meanwhile, after the protective cover ascends, waste materials of the destroyed bank cards stacked in the stacking and collecting groove can be cleaned.

The invention relates to the technical field of laser cutting equipment, and discloses galvanized coiled plate cutting equipment which comprises a mounting frame, a guide rail structure, a cutting structure, a conveying structure, an intercepting toothed plate, a slag removal fan and a discharging structure. The cutting structure comprises a cutting seat, a laser cutting head, a separated protective cover, the intercepting toothed plate, the slag removal fan and the discharging structure; the separated protective cover is formed by splicing a plurality of splicing covers. Each splicing cover comprises an outer cover plate, an inner air box, a limiting plate, a limiting spring and an air supply hose. When the device is used, high-pressure air is blown out of the inner air box to form a protective air curtain on the splicing cover, the annular air cover and the laser cutting head, and therefore the situation that slag splashes and is intercepted, and zinc steam adheres to the splicing cover, the annular air cover and the laser cutting head can be prevented; and air is forced to be discharged along the cutting seam by the closed space formed by the separation type protective cover, so that the blowing force of the airflow to the lower edge of the notch is enhanced, and the adhering slag can be forcibly stripped.

The invention relates to the technical field of laser positioning devices, and discloses a non-woven fabric laser positioning device which comprises a machine body base used for supporting the whole device. The moving device is arranged at the top of the machine body base and is used for enabling the device to move in the working area; and the laser positioning piece is arranged on the moving device and is used for realizing high-precision laser positioning so as to ensure the cutting precision. According to the non-woven fabric laser positioning device, the air suction mechanism is arranged, so that air near the laser positioning piece is effectively sucked in, particle impurities are adsorbed on the filter screen, and the filter screen is clean when waiting for shutdown, and therefore, the laser positioning piece is kept clean in the working process, and interference of smoke and impurities is reduced; and smoke and slag are discharged through an outer ring cavity between the inner ring piece and the protective cover, so that circular flow of air is formed, smoke and slag in the cutting process are effectively taken away, impurity interference in the environment is reduced, and the stability and high precision of a laser light path are ensured.

The invention relates to the technical field of pressure transmitters, and discloses an intelligent explosion-proof high-temperature melt pressure transmitter, which comprises an output end used for outputting an electric signal subjected to pressure conversion and temperature compensation to external equipment; the connecting cable is used for connecting and transmitting electric signals; and the sensor end is used for sensing external pressure and converting the external pressure into an electric signal. According to the intelligent explosion-proof high-temperature melt pressure transmitter, the protection mechanism is arranged, a stable installation position is ensured through plane contact between the protection cover and the tank wall, further tightening of the protection cover is prevented through contact between a threaded rod piece and the outer wall of the tank wall, and the situation that the protection cover is screwed when installation threads are tightened is avoided; the induction diaphragm is tangent to the inner wall plane of the tank wall, so that complex operation is not needed in the installation process, meanwhile, accurate alignment of the plane of the induction diaphragm is kept, follow-up disassembly and overhaul of equipment are facilitated, and convenience and operation efficiency of equipment maintenance are improved.

The utility model discloses a display device capable of being disassembled quickly, relates to the technical field of packaging boxes, and aims to solve the problem that when a display article is displayed, the article needs to be placed in a display cover, so that when the article is taken, limiting devices at the two ends of the display cover need to be shifted at the same time, and the display cover is not limited. The problem that the use efficiency of the device is reduced due to the fact that a protective cover can be stably placed on a display base under the condition that a limiting device is not arranged, even if limiting is relieved, the display cover cannot be directly and automatically moved upwards conveniently is solved, and the display device comprises a containing box and a cover plate. And the cover plate is arranged above the placement box, bolts can be conveniently moved towards the two sides through cooperation of arranged telescopic rods and first tensioning parts, a supporting plate can be conveniently moved upwards through reset springs, and meanwhile the position of the supporting plate can be supported, blocked and limited through the position of limiting pins.

The invention relates to a dust-free cutting device for processing metal parts of textile machinery, which comprises a cutting main body mechanism, the cutting main body mechanism comprises a welding base, a protective cover, a cutting arm hinging base, a cutting arm hinging shaft seat, a cutting arm, a tail hinging plate, a stretching air cylinder, a laser transmitter, a main rotating motor base, a main rotating motor, a hollow chuck and a driving belt wheel; the protective cover is fixedly arranged on the welding base, the cutting arm hinge bases are fixedly arranged in the middle of the top face of the welding base, and the number of the cutting arm hinge shaft seats is two. The standards of cutting depth and cutting precision are improved; and the smoke adsorption effect is improved, the smoke absorption rate generated in the cutting process is increased, and therefore harm to workers caused by dust and smoke in equipment when equipment protection is opened for feeding and discharging is effectively relieved.

The utility model discloses a novel numerical control machine tool guide rail protective cover which comprises a machine tool body, a first protective cover is arranged above the machine tool body, a second protective cover is arranged in the first protective cover, a third protective cover is arranged in the second protective cover, the bottom end of each oil injection opening is communicated with a sliding way, and the bottom end of each oil injection opening is communicated with a sliding way. An oil storage tank is fixedly connected to the upper surface of the fixing plate, a connecting rod is arranged in the oil storage tank, a check block is fixedly connected to the bottom end of the connecting rod, a connecting block is fixedly connected to the top end of the connecting rod, symmetrical springs are fixedly connected to the bottom face of the connecting block, and a second clamping groove is formed in the upper surface of the oil storage tank. Through the arrangement of the first protective cover, the second protective cover and the third protective cover, under the sliding connection of the sliding way, a worker can conveniently fold and operate the device, and under the cooperation of the oil storage tank and the oil injection port, the lubricating effect on the sliding block in the sliding way and the sliding connection position is achieved.