221results about How to "Large operating space" patented technology

The invention belongs to the technical field of first-aid cases, and relates to a first-aid case based on first-aid tool storage. The device comprises a first box body, a second box body and a third box body, the first box body is connected with a C-shaped rod in an up-down sliding mode, the C-shaped rod is horizontally connected with a first sliding base and a second sliding base in a sliding mode, the second box body is fixedly connected with the first sliding base, and the third box body is fixedly connected with the second sliding base. A disinfection cavity is formed in the second box body, and a strip-shaped instrument containing module is arranged in the disinfection cavity. Spray head bases are arranged on the two sides in the disinfection cavity and spray disinfectant and sterile gas to the instrument containing module. A liquid supply mechanism is arranged on the second box body, an air supply mechanism is arranged on the second box body, and when the first sliding seat moves downwards, sterile air enters the nozzle seat through the air supply mechanism. And in the process that the emergency box changes to the third state, the instruments are disinfected, cleaned and dried, and the personnel need to carry out disinfection treatment operation when taking down the instruments for use, so that the first-aid time is effectively saved.

The invention discloses a mining fan operation detection device, which belongs to the technical field of fan detection and comprises a base table and a tool table. A movable shielding cover and a fixed shielding cover are arranged on the left side and the right side of the base table respectively, a stroke multiplication type synchronous connecting pipe shielding mechanism is arranged on the base table, the movable end of the stroke multiplication type synchronous connecting pipe shielding mechanism is fixedly connected with the movable shielding cover and the tool table, and a multi-measuring-point air speed measuring mechanism is arranged at the air outlet end of the air outlet pipeline. By means of the mode, after the draught fan is in place on the tool table, the synchronous butt joint effect of the air inlet pipeline, the draught fan, the air outlet pipeline, the movable shielding cover and the fixed shielding cover can be achieved through driving of the driving cylinder, the draught fan can be conveniently detected, and the detection efficiency is improved. And the fan is preliminarily separated from the external environment, so that the adverse effect of noise generated by long-time operation of the fan during testing on the body health of surrounding operators is avoided.

The invention discloses a preparation method of intermediate carbon microspheres, which comprises the following steps of: preparing precursor asphalt by taking naphthenic base aromatic hydrocarbon-rich heavy oil as a raw material and adopting a low-temperature thermal polycondensation process; the preparation method comprises the following steps: carrying out fluidized bed hydrotreatment on precursor asphalt under proper reaction conditions by matching with a proper isomerization functional catalyst and a molecular sieve catalyst to obtain refined aromatic hydrocarbon-rich distillate oil with a boiling range of more than 400 DEG C, and taking the refined aromatic hydrocarbon-rich distillate oil as a raw material; the preparation method comprises the following steps: carrying out a catalytic polycondensation reaction under the dual catalytic action of a heteropolyacid aluminum salt catalyst and a heteropolyacid ferric salt catalyst to obtain intermediate pitch, extracting the intermediate pitch through an extraction solvent, removing isotropic pitch components to obtain green carbon microspheres, and finally carrying out carbonization treatment on the green carbon microspheres to obtain the mesocarbon microbeads. The invention provides a brand new aromatic hydrocarbon-rich raw material refining treatment process through technical coupling, has the advantages of wide raw material application range and high production efficiency, and opens up a new path for low cost and high quality of mesocarbon microbeads.

The invention discloses an anti-cracking embedded injection molding device and a processing technology thereof, and belongs to the technical field of injection molding.The anti-cracking embedded injection molding device comprises two supporting frames, two sliding rails are fixedly connected to the tops of the supporting frames, two lower molds are arranged between the two sliding rails in a sliding mode, and an upper mold is arranged at the tops of the lower molds; a lifting turnover assembly connected with the supporting frame is arranged between the two upper dies and used for driving the upper dies to ascend, descend and turn over, the lifting turnover assembly is connected with a deflection driving assembly, the deflection driving assembly is used for driving the lower dies to move and deflect, and two air blowing cooling assemblies are arranged on one side of the deflection driving assembly. According to the mold, blowing cooling can be conveniently conducted on the upper mold and the lower mold, the product shaping speed is increased, after mold opening, the upper mold moves upwards and deflects towards one side, the lower mold moves away and turns over towards one side, in this way, the operation space between the upper mold and the lower mold is enlarged, and workers can conveniently take materials, clean and maintain.

The invention belongs to the technical field of medical equipment, and discloses a storage vessel for biological medicine analysis, the storage vessel comprises a shell, the outer wall of the shell is provided with a supporting mechanism, and the inner wall of the shell is provided with a fixing mechanism through a lifting mechanism; the fixing mechanism comprises a storage box, the inner wall of the storage box is elastically connected with an inserting block through a connecting spring, the inner wall of the storage box is slidably connected with a pull rod, an inserting groove is formed in the outer wall of the pull rod, the inner wall of the storage box is fixedly connected with a fixed clamp, and the outer wall of the pull rod is hinged to a movable clamp through a hinge rod. The inner wall of the storage box is fixedly connected with a fixed plate; through cooperation of the movable clamp, the pull rod and other structures, by pulling the pull rod, multiple sets of test tubes can be clamped at the same time, or the clamping states of the multiple sets of test tubes can be relieved at the same time, then the efficiency of placing or taking the test tubes by an operator is improved, and more convenience and rapidness are achieved.

The utility model discloses a PVC (polyvinyl chloride) coiled material embossing and heating device, and relates to the field of PVC coiled material processing. Comprising a direction-adjusting winding roller and a heating assembly which are arranged on a rack, the heating assembly is arranged on one side of the direction-adjusting winding roller, a gap allowing coiled materials to pass through is formed between the heating assembly and the direction-adjusting winding roller, and the coiled materials are wound on the direction-adjusting winding roller and sequentially pass through the gap; the heating assembly comprises a heating part, the heating part is arranged on the rack and extends downwards, and the gap for the coiled materials to pass through in sequence is formed between the heating part and the direction adjusting winding roller. The device has the advantage of being good in coiled material surface embossing quality.

This invention discloses a capture device for unmanned underwater vehicles (UUVs), comprising a submersible fixed by a mounting frame. The mounting frame is symmetrically mounted with a grasping mechanism for capturing the UUV via a base. The grasping mechanism includes a drive arm driven by the base, with the other end of the drive arm rotatably connected to four corner support frames. The four corner support frames are driven by connecting arms to contact claws for gripping. A groove is provided on the side of the drive arm near the base, and a servo motor is mounted on the base. The servo motor is connected to a gear at one end of a limiting link, transmitting power through the other end of the limiting link to the groove on the drive arm to achieve the movement of the grasping mechanism. This invention also discloses a method for launching and recovering UUVs in conjunction with the above-mentioned launch and recovery device. This invention simplifies precise hook docking operations in high sea states, reduces the dependence of UUVs on computing power during launch and recovery, and improves the automation level of the launch and recovery process.

This utility model discloses a testing device for pathological specimens, relating to the technical field of pathological specimen testing equipment. It includes a placement box, a testing mechanism, and a movable seat. The placement box has a hinged door on its front. The testing mechanism is mounted on the top of the placement box and is connected to it. Two first sliding grooves are formed on the bottom surface of the placement box. The bottom of the movable seat is slidably connected to the two first sliding grooves via a sliding connector. Two second sliding grooves are formed laterally on the top of the movable seat. An adjustable clamping and fixing mechanism is included, comprising a limiting frame, a bearing seat, a double-ended lead screw, a brake motor, and a clamping base. The limiting frame is fixed to the top of the movable seat by multiple support legs, and a through-hole limiting groove is formed inside the limiting frame. This utility model can be applied to the limiting and fixing of test tubes of various sizes, greatly improving the applicability and practicality of the device.

The present invention discloses an integrated winding elbow assembly mold, including an upper mold, a lower mold is provided at the bottom of the upper mold, a steel wire rope is penetrated inside the upper mold and the lower mold, assembly blocks are provided on the inner sides of both ends of the upper mold and the lower mold, support plates are provided at the connection between the upper mold and the lower mold, positioning holes are provided on the tops of the two support plates, positioning pins are penetrated in the two positioning holes, and crescent-shaped holes are provided at the corresponding positions at the bottoms of the two positioning holes. The present invention realizes demoulding by first unscrewing the nuts at both ends of the steel wire rope, removing the sealing plate and the socket sleeve, and then removing the assembly blocks on the inner sides of both ends of the mold, and finally pulling the finished product of winding molding to one end; the assembly blocks are added to facilitate demoulding of the finished product, because the socket is slightly wider than the elbow, and it is more convenient to disassemble by removing the assembly blocks.

The utility model discloses a shell structure of grinding equipment, which comprises a base and a frame structure arranged on the base, four side plates are mounted on the frame structure, and a distribution box is fixed at the top of the frame structure; wherein two adjacent side plates are provided with openings located at the same corner, each opening is slidably provided with an operation door, and magnetic parts which are magnetically attracted with each other are embedded into the ends, making contact with each other in a closed mode, of the two operation doors; observation windows are mounted on the other two adjacent side plates; a bottom groove is formed in the bottom of the base, and a water tank assembly is arranged in the bottom groove in a sliding mode. The operation space is increased by changing the arrangement mode of the operation door, workpiece feeding and discharging operation can be conveniently carried out in the space with the small size, meanwhile, cooling liquid collection treatment is carried out on the outer side of the shell structure, and convenience is improved.

The utility model discloses a marine energy storage box which comprises a box body, two rows of battery racks are arranged at intervals in the width direction of the inner space of the box body, a guide rail extending in the width direction of the box body is arranged on a bottom frame of the box body, and each row of battery racks are arranged on the guide rail in a sliding mode. Each row of battery racks is detachably fixed at a position away from the side wall of the adjacent box body by a first set distance, and the first set distance is not zero. The sliding guide rails are additionally arranged at the bottom of the battery rack, so that the battery rack can slide on the guide rails. When the battery pack is installed and maintained, the battery racks on the two sides are pushed to be tightly attached to the side inner walls, and therefore a larger installation space and a larger operation space are achieved when the battery pack is installed and maintained. When the energy storage box is used, the battery racks on the two sides can be pushed to the middle, enough space is provided for the two sides, and the requirement for the safe space between the battery pack and the side wall is met.

The safety supporting rod comprises a base and a fixing rod, the bottom end of the fixing rod is connected into the base in an inserted mode, a limiting structure for preventing the fixing rod from rotating is arranged in the base, the outer wall of the fixing rod is in threaded connection with a sleeve, and the sleeve is in threaded connection with the fixing rod. The top of the sleeve is provided with a top block for supporting the inverted cab and a self-adaptive structure convenient for the top block to be attached to the inner cabin of the cab; telescopic adjustment in the vertical direction is achieved through the threaded matching structure of the fixing rod and the sleeve, compared with a traditional folding type three-folding structure, the rod type design can reduce the transverse occupied space, the operation space around a maintenance area is increased, and maintenance of components around the device is facilitated. The head of an operator is protected by arranging the top protection plate and the self-locking structure, impact of parts falling from the top to the head is avoided, meanwhile, the protection plate is automatically locked after being unfolded through cooperation of the positioning balls and the multi-stage positioning holes, use is convenient, and operation is easy.

The utility model discloses a modularized pelvis fixator, relates to the technical field of medical instruments, and solves the problem that secondary injury is caused to a patient due to the fact that a connecting rod and a bone traction needle possibly interfere with each other when the number of operation parts is too large in the prior art. The main mounting seat is arranged on the outer trapezoidal supporting frame and used for mounting and locking the connecting rod, more straight line sections can be conveniently connected with the locking block through the outer trapezoidal supporting frame, meanwhile, the trapezoidal structure avoids shielding of an operation space in an operation, and better applicability is achieved; the outer trapezoid supporting frame has the advantages that the fixing rod scheme combination is more visual and convenient, meanwhile, the straight line section and the locking block can be connected more stably, the problem of unstable connection of the arc section is avoided, the inner rectangular supporting frame is adopted on the inner side, the inner operable space is larger, and operation in the operation is facilitated.

The utility model discloses a clamping ring structure, belongs to the technical field of pipeline connecting pieces, and solves the problem that an existing steel belt type hoop is inconvenient to assemble and disassemble. The device comprises an assembling screw rod, a locking nut and a stainless steel band with an opening, a rotating shaft is rotationally installed in the open end of the stainless steel band, a plurality of V-shaped lining plates arranged at intervals are arranged on the inner wall of the stainless steel band, and one end of the assembling screw rod penetrates through the stainless steel band to be detachably connected with one rotating shaft; one end of the assembly screw rod is connected with the stainless steel band, the other end of the assembly screw rod penetrates through the stainless steel band and the other rotating shaft and is in threaded connection with the locking nut, the assembly screw rod between the stainless steel band and the locking nut is movably sleeved with a T-shaped sleeve, and the assembly screw rod between the T-shaped sleeve and the locking nut is further movably sleeved with a pressing sleeve. The V-shaped lining plate is a casting piece or a forging piece. According to the clamping ring structure, the structural strength can be effectively improved, the service life is prolonged, and meanwhile disassembly and assembly are further facilitated.

The utility model discloses a steel coil packing machine rotary guide way which comprises a base, a bundling saddle and a packing machine are installed on the base, a base is rotationally connected to the surface of the packing machine, a rotary shaft is inserted into the surface of the base, a rotary guide way frame is connected to the rotary shaft in a sleeved mode, and an air cylinder is rotationally connected to the side face of the rotary guide way frame. The right end of a shell of the air cylinder is rotationally connected with the packaging machine, an assembling plate is installed on the lower surface of the rotary guide way frame, and a guide way guide plate is installed on the surface of the assembling plate. Therefore, the rotary guide rack and the guide guide plate can avoid the coil stripping trolley, the steel coil and the coiling machine, the arc-shaped plate, the wrapper roll and other parts of the coiling machine are not interfered with the guide guide plate when being replaced, and the coil stripping trolley is maintained and hoisted, so that the operation space is larger, and the working efficiency is improved.

The utility model discloses an electric servo control universal testing machine which comprises a base, a pressure detection table is arranged in the base, a supporting plate is arranged in the side direction of the base, and supporting frames are arranged at the two ends of the supporting plate. A downward pressing push plate is arranged on the inner side wall of the supporting plate, a first sliding rail and a second sliding rail are arranged on the side wall of the supporting frame from inside to outside, a first protection frame is arranged on the first sliding rail in a sliding mode, and a second protection frame is arranged on the second sliding rail in a sliding mode; the first protection frame and the second protection frame are arranged, and the sliding stroke of the second protection frame is higher than that of the first protection frame, so that scrap splashing caused by material crushing in the test process is effectively prevented. By means of the double-layer protection design, the risk of injury to surrounding equipment and workers can be greatly reduced, and the safety of the test process is improved. Splashed chippings have large kinetic energy and are prone to damaging a testing machine and other peripheral equipment.

This invention discloses a method for coordinated unloading-support-filling roadway protection in a longwall mining face of a steeply inclined coal seam. The method includes: arranging pre-reinforcing anchor bolts and cables at certain intervals in the transport roadway to reinforce the transport roadway in advance; pre-excavating a gap in the upper side of the transport roadway by blasting, and adding reinforcing anchor bolts and cables to the cross-section of the pre-excavated gap; arranging pressure-relief boreholes at certain intervals in the center of the coal seam roof at the pre-excavated gap, and implementing pressure-relief blasting after the support is moved; using I-beams and retractable modular roadway protection supports as the first and second layers of rock-blocking support, respectively; filling and sealing the goaf area above and on the sides of the retractable modular roadway protection supports with local filling materials; and arranging single hydraulic props for delayed support at a certain distance from the coal wall of the lagging face inside the roadway along the goaf. This method provides good support, significantly increases the speed of roadway retention in a longwall mining face of a steeply inclined coal seam, and effectively ensures safe and normal production.

The utility model provides a patch type SQ common mode inductor which comprises a shell, a magnetic core, a first coil and a second coil, the shell comprises a groove body and four patch pins, the groove body is provided with a frame and a bottom wall, the patch pins are arranged on the outer wall face of the frame, and in the height direction of the frame, the bottom faces of the patch pins are lower than the bottom face of the bottom wall. Or the bottom surfaces of the patch pins are flush with the bottom surface of the bottom wall, the first coil and the second coil are wound on the two sides of the magnetic core respectively, the magnetic core is arranged in the groove body, the two ends of the first coil are wound on the two patch pins respectively, and the two ends of the second coil are wound on the other two patch pins respectively; the patch pin is arranged at the position lower than or flush with the bottom wall of the shell, after the inductor is placed on an electric device to be welded, a worker can weld the inductor through the patch pin, after the patch pin is wound with a coil, a gap is formed between the bottom wall of the shell and the electric device to be welded, the operable space of the corresponding patch pin is large, and therefore the inductor can be conveniently welded. And meanwhile, the welding strength is ensured, and the production efficiency of the inductor is effectively improved.

This utility model relates to a mechanism for quick disassembly and cleaning of a bottled probiotic heat-sealing mechanism. A mounting frame supports the heat-sealing mechanism and includes symmetrically arranged combined columns on both sides of a mold plate. The top of the combined column on the first side is connected to the first end pin hole of the heat-sealing mechanism via a pin shaft. The combined column on the second side is connected to the second end pin hole of the heat-sealing mechanism via a pin positioning assembly, allowing the first end pin hole of the heat-sealing mechanism to rotate outward around the pin shaft, and the second end pin hole to lift, so that the heat-sealing block of the heat-sealing mechanism is tilted towards the operator. This utility model, through a single-sided pin shaft hinge and pin opening / closing design, enables the heat-sealing block to be quickly flipped and lifted with one hand in 5 seconds, eliminating the need for bolt disassembly, changing the cleaning posture from horizontal to tilted, and increasing the operating space by 300%.

The application provides a power lighting distribution control box, which comprises a box body, a box door and a set of storage cabinets installed in the box body, and electrical elements are installed in the storage cabinets; first sliding grooves are symmetrically formed in the top and bottom of the box body, the storage cabinets are respectively clamped to the first sliding grooves in the top and bottom of the box body through symmetrically arranged sliding blocks in the top and bottom, and the box door is connected to the box body along a direction perpendicular to the sliding direction of the sliding blocks. The first sliding grooves are symmetrically formed in the top and bottom of the box body, and the storage cabinets are clamped to the first sliding grooves through symmetrically arranged sliding blocks, so that the slidable installation of the storage cabinets in the box body is realized; maintenance personnel can more easily slide the storage cabinets out of the box body to maintain and check the electrical elements, the efficiency and safety of the maintenance of the distribution control box are effectively improved, and the operation difficulty caused by the narrow space in the traditional design is avoided.

The utility model relates to packing paper bag production equipment technical field, the utility model provides a kind of bag making machine folding device for high-barrier solid medicine packing paper bag production, it includes bag making machine body, folding machine body and folding machine blanking plate, bag making machine body one end is provided with folding machine body, folding machine body one side is equipped with folding machine blanking plate, guide plate, guide plate is set in folding machine blanking plate side by adjusting mechanism, guide plate is used to fold after packing paper is arranged in code neat, reduce packing paper gap;After bag making machine body completes packing paper basic processing, folding machine body folds packing paper according to preset trajectory, when folding after packing paper is transported to folding machine blanking plate, guide plate can be according to packing paper size adjusting spacing by adjusting mechanism, it is oriented to its two sides in the whole process of packing paper movement Limit position, not only can packing paper be guided to specified position, but also can correct the position deviation caused by deviation of position shift.

The utility model relates to the field of automobile maintenance, in particular to a gantry four-wheel positioning lifting machine which comprises two fixed stand columns, an approach bridge and a lifting module, the two fixed stand columns are symmetrically arranged, the bottoms of the two fixed stand columns are fixedly connected with fixed bases, the tops of the two fixed stand columns are fixedly connected through a connecting base, and the connecting base is fixedly connected with the approach bridge. A main engine oil cylinder and an auxiliary engine oil cylinder are arranged on the inner sides of the two fixing stand columns correspondingly, an electric control hydraulic pump station is arranged at the right ends of the surfaces of the fixing stand columns, and the lower ends of the safety clamping blocks are connected with small air cylinders through connecting rod structures. The movable table is of a movable structure, so that the movable table slides towards the inner side, the movable table is flush with the workbenches on the two sides, fixing is achieved through connection of the manual bolt rods and the bolt holes, and therefore in the maintenance operation of the battery pack of the new energy automobile, the manual bolt rods are pulled out, the movable table can slide towards the outer side, and the movable table is fixed. And the operation space of the chassis is increased, different use requirements can be met conveniently, and practicability is improved.

The utility model relates to the technical field of metal mold rust removal, in particular to a metal mold surface rust removal device which can enlarge the operation space when a placing frame is taken and placed, prevent the operation space from being limited and prevent personnel and a metal mold from being collided. Comprising a rust removal barrel, the bottom of the rust removal barrel communicates with a discharge pipe, a control valve is arranged on the discharge pipe, a placement frame is placed in the rust removal barrel, a plurality of placement grooves are formed in the placement frame, two sets of grips are symmetrically arranged at the top end of the placement frame, and two sets of supporting plates are symmetrically and fixedly welded to the lower portions of the outer walls of the left end and the right end of the rust removal barrel. T-shaped supporting seats are fixedly connected to the outer sides of the two sets of rotating shafts correspondingly, electric push rods are fixedly installed on the two sets of T-shaped supporting seats correspondingly, the output ends of the two sets of electric push rods are fixedly connected with T-shaped bolts correspondingly, the two sets of T-shaped bolts are inserted into the positioning holes of the two sets of supporting plates correspondingly, and electric telescopic rods are fixedly installed on the two sets of T-shaped supporting seats correspondingly and used for metal mold rust removal.

The utility model belongs to the technical field of building construction, and discloses an overhanging formwork and climbing frame conversion steel platform at a change position of a main structure of a super high-rise building, which comprises an Nth floor slab and an (N-1) th floor slab, and further comprises a stress structure which is arranged between the Nth floor slab and the (N-1) th floor slab in an overhanging manner and is used for overhanging support, the anchoring structures are arranged on the Nth layer of floor and the (N-1) th layer of floor and used for pre-embedded stress and compression fixation, and the stress structure is fixed between the Nth layer of floor and the (N-1) th layer of floor through the anchoring structures; the stress structure comprises a plurality of triangular supports which are evenly distributed, and a plurality of pieces of I-shaped steel are evenly distributed among the triangular supports. According to the overhanging formwork and climbing frame conversion steel platform for the change position of the main structure of the super high-rise building, the advantages of the H-shaped steel, the inclined strut steel pipes and the I-shaped steel are organically combined, the H-shaped steel and the inclined strut steel pipes are high in combination stability and strength and have the functions of a structure overhanging formwork platform and a climbing frame conversion operation platform, and the I-shaped steel is flexible in arrangement and convenient to assemble and disassemble.

The utility model provides a transportation hanging ring assembly which comprises a hanging ring. The hanging ring consists of a fixing part and a connecting part which form an obtuse angle; the fixing part is fixedly connected with a body of the injection molding machine through bolts; the connecting part extends away from the body of the injection molding machine and is used for connecting a rope. The fixing part and the connecting part are integrally formed to form a fixed integral structure, so that the problem caused by free swinging of a traditional lifting ring is avoided, and when the injection molding machine is fixed on a truck frame or a cargo ship body for transportation through the lifting ring, displacement of the injection molding machine caused by bumping, steering and shaking of a vehicle or a ship can be effectively prevented, and the risk of collision between the injection molding machine and a transportation carrier is reduced; equipment damage is avoided, and meanwhile potential safety hazards caused by infirm fixation are eliminated. And in the hoisting and transferring process, the hoisting ring assembly can reduce swinging of the hoisting ring, so that the posture of the injection molding machine is more stable, the operation difficulty and risk are reduced, and the safety and reliability in the hoisting process are improved.

The utility model belongs to the technical field of tunnel machinery, and discloses a tunnel construction trolley which comprises a trolley body and a sliding seat, and a driving mechanism is arranged between the trolley body and the sliding seat. At least one working device and a driving cabin are arranged on the sliding seat, and a construction workbench is arranged in the driving cabin. According to the trolley, the sliding seat can slide in the length direction of the trolley body, so that the trolley has different whole trolley lengths in different states, and the passing difficulty of the trolley in a tunnel is reduced on the basis of meeting actual tunnel construction requirements.

The invention discloses a manual emergency driving device with an adjustable operation distance for a nuclear power station. The manual emergency driving device comprises a hand-cranking mechanism, a driving mechanism and a driving mechanism, the flexible shaft mechanism is used for transmitting the power transmitted by the hand-cranking mechanism in a space with an adjustable operation distance; and the driving mechanism is used for being connected with a walking structure or a hoisting mechanism in the hoisting equipment, and based on the power transmitted by the flexible shaft mechanism, the walking structure or the hoisting mechanism is operated to a safe area and then the load is released. The manual emergency driving device with the adjustable operation distance can enable the operation space to be larger and safer, is different from a traditional manual operation mechanism which directly acts on a driving mechanism, and is small in space and large in danger.

The utility model is applicable to the technical field of fireproof detection of engineering materials, and provides a fireproof performance detection device for constructional engineering materials, which comprises a detection box, the bottom of the inner wall of the detection box is fixedly connected with a containing box, and the top of the containing box is provided with a supporting plate which moves along the horizontal direction through a driving mechanism. One end of the upper surface of the supporting plate is fixedly connected with a first containing square barrel used for containing a flame gun, and the other end of the upper surface of the supporting plate is fixedly connected with a moving plate moving in the horizontal direction. According to the fireproof performance detection device for the building engineering material, after the function of the driving mechanism, the supporting plate can be driven to move to the outside of the detection box, so that the engineering material and a flame gun are exposed out of the device, the operation space of a worker is increased, and the flame gun or the engineering material can be conveniently replaced; fireproof performance detection of the engineering material is facilitated, and the fireproof performance detection efficiency of the engineering material is improved.

The utility model discloses a telescopic ceiling for a working platform and an anchor rod drill carriage comprising the telescopic ceiling. The telescopic ceiling comprises a top plate, a telescopic plate and a telescopic oil cylinder, wherein the telescopic plate is movably fixed below the top plate through a pressing plate mechanism. The pressing plate mechanism comprises bending pressing plates, first bending parts of the bending pressing plates are fixedly connected with the bottom of the top plate, gaps are formed between second bending parts of the bending pressing plates and the lower surface of the top plate, the second bending parts of the two bending pressing plates are oppositely arranged in a spaced mode to form sliding rails for installation and horizontal stretching and retracting of the telescopic plate, one end of the telescopic oil cylinder is connected with the telescopic plate, and the other end of the telescopic oil cylinder is connected with the top plate. The telescopic plate horizontally stretches out and draws back along the sliding rail under the action of the telescopic oil cylinder. By means of the split type sliding rail structure, the telescopic plate is more convenient to mount and dismount, the thickness of the sliding rail can be adjusted, the telescopic plate is not blocked, the telescopic plate can stretch out and draw back more smoothly, and the safety and reliability of the ceiling are improved. And free lifting of the top plate can be met, the operation space of operators is larger, and work is safer.