44results about How to "Avoid accidental sliding" patented technology

The utility model relates to the technical field of aluminum industrial production, in particular to a molten aluminum casting chute baffle. The molten aluminum casting chute baffle comprises a chute, a supporting frame, a guide rod, a first screw rod, a lifting plate, a baffle body, a first gear, a second gear, a motor, a lifting block and a protection assembly, the chute is used for guiding molten aluminum to move from one position to another position, and the supporting frame is installed on the outer side of the chute. The guide rod is connected to the left side in the supporting frame, the first screw is rotationally connected to the right side in the supporting frame, and the lifting plate is slidably connected into the supporting frame. Under the condition that a motor breaks down or is powered off, the height of the second gear can be adjusted to enable the second gear to be disengaged from the first gear, then the first screw is rotated through manual operation, the position of the baffle is adjusted, production continuity and safety are guaranteed, and the reliability and adaptability of the system are greatly enhanced through the design of the double modes (automatic / manual operation).

The application discloses a pile driver intelligent guiding device arranged on the surface of a machine body and comprising a vertical guiding mechanism, the vertical guiding mechanism comprising a frame rod fixedly connected with the machine body, a fixed plate fixedly installed at the end of the frame rod, and a universal joint arranged on the top surface of the fixed plate. The pile driver intelligent guiding device is connected with the fixed plate through the universal joint, and a sliding cylinder-screw rod driving structure is combined to adjust the pitch angle of a laser instrument in real time. When the sliding cylinder slides along the fixed cylinder, the fixed plate is pushed to rotate around the universal joint as the fulcrum, so that the laser line emitted by the laser instrument is always perpendicular to the ground, the high-precision guiding requirement of the vertical implantation of a steel sheet pile is met, the inner wall of the sliding cylinder is provided with an embedded nut and is threadedly connected with a screw rod, the end of the screw rod is limited from being separated from the sliding cylinder through a stop ring, the threaded connection is prevented from being invalid due to vibration or impact, the surface groove of the sliding cylinder is matched with the inner wall protrusion of the fixed cylinder to prevent the rotation of the sliding cylinder and ensure that the sliding direction is always along the axial direction, and the structural reliability is improved.

The utility model provides a kind of wall drilling device for fire engineering, including bottom plate, the upper end right side of bottom plate is symmetrically provided with sliding slot, the inside of sliding slot is slidably provided with slide column, the inside of sliding slot is provided with the drive unit for driving slide column to move, the upper end of two slide columns is jointly connected with fixed plate, the right end of fixed plate is provided with mounting plate, and drilling wall piece is provided on mounting plate, the front and rear ends of mounting plate are both provided with fixed frame, rotatingly provided with rotating column in the inside of fixed frame, the both ends of rotating column extend to the outside of fixed frame and are jointly connected with rotating plate, through the wall drilling device for fire engineering of the utility model, not only dust generated in the process of drilling can be adsorbed by dust cover, improve working environment quality, but also the angle of dust cover dust suction can be adjusted by rotating rotating plate, ensure that it is always in the best dust suction position, effectively capture dust generated in the process of drilling, avoid dust to escape.

The utility model belongs to the technical field of rolling mill crossbeam, specifically discloses a kind of rolling mill crossbeam maintenance auxiliary device, including bottom plate, two support seats are equipped on bottom plate, two support seats are equipped with support, the side of support is equipped with motor, two supports are rotatably connected with shaft one and shaft two, one end of shaft one is fixedly connected with motor, and the opposite end of shaft one and shaft two is equipped with the clamping structure for clamping crossbeam.Using the mode of lifting crossbeam in the process of crossbeam maintenance, the steps are complicated, a large amount of manpower and time are consumed, and the maintenance efficiency is low.The utility model is provided with bottom plate, support seat, support, motor, shaft one, shaft two and clamping structure, which facilitates the rotation of oiling during the maintenance of rolling mill crossbeam, realizes the autonomous overturning of crossbeam, does not need to rely on travelling crane lifting and overturning, effectively simplifies the crossbeam maintenance process, reduces the consumption of manpower and time, and improves the maintenance efficiency.

This patent discloses a reading stand for one-handed page turning, including a frame, a flexible book clip, and a book clip holder. The book clip holder can adjust the rotation angle of the flexible book clip. Due to its length difference, the flexible book clip can switch between different gripping states via the book clip holder: a free position, a hovering critical position, or a maximum hovering position. This allows for one-handed switching of gripping states and page turning. The hovering characteristic of the flexible book clip ensures that it remains stably open after being lifted, providing invisible support for the hand turning pages. Users do not need to exert effort to keep the book clip open while turning pages, allowing them to focus entirely on the page-turning action itself. This intelligent interactive experience of "lift to stop, press to close" greatly reduces the operational burden, making long-term reading more relaxed and comfortable, and significantly improving user comfort and satisfaction.

The application relates to the technical field of welding protection equipment, in particular to a spatter-preventing surfacing protection device which comprises a left protection plate and a right protection plate, a first sliding groove is formed in the left protection plate, and the left protection plate is slidably connected with the right protection plate through the first sliding groove; an angle adjusting mechanism and a locking mechanism are arranged on the left protection plate and the right protection plate; the angle adjusting mechanism comprises a first protection plate which is rotationally connected with the left protection plate and a second protection plate which is rotationally connected with the right protection plate; the locking mechanism comprises a second sliding groove formed in the right protection plate, a locking plate which is vertically slidably connected in the second sliding groove, and a locking block arranged in the first sliding groove. The spatter-preventing surfacing protection device can flexibly adjust the protection length and angle and firmly lock through the left and right protection plate sliding connection, the angle adjusting mechanism and the locking mechanism, and effectively blocks the surfacing spatter.

This utility model relates to a sliding cover type FPC connector, including a base and a slider slidably connected to the base. The base has sliding grooves extending along the insertion direction on both sides. The slider has guide arms that slidably engage with the sliding grooves. The groove walls have recesses, and elastic arms are installed within these recesses. A locking block is located at the free end of the elastic arm, and a corresponding slot is provided on the guide arm. A slot is located in the middle of the base along its width direction. An insert plate extends into the slot on the slider. Limiting grooves are spaced apart within the slot, and terminals are installed within these grooves. Through the design of the locking block at the free end of the elastic arm engaging with the inclined surface of the guide arm's slot, when the slider is pulled, the inclined surface of the slot pushes the locking block, causing the elastic arm to deform, and the locking block naturally exits the slot to unlock. When the slider is pushed to the locked position, the elastic arm automatically resets, and the locking block precisely engages with the slot to form a stable lock, effectively preventing accidental sliding of the slider.

The utility model belongs to deck chair technical field, especially relates to a support foot linkage of folding deck chair and support mechanism, including bed body and be used for supporting the support frame of bed body, the bed body includes the seat frame and backrest that can be relatively folded, and the support frame is arranged on the seat frame, and the support foot is rotationally arranged on the backrest, and the transmission connecting rod is between the support foot and the seat frame, and the transmission connecting rod is rotationally connected with the support foot and the seat frame respectively, the backrest is controlled and is unfolded with the seat frame, and the transmission connecting rod can drive the support foot and the backrest to unfold oppositely, thereby making the support foot can support the backrest, the backrest is controlled and is folded with the seat frame, and the transmission connecting rod can drive the support foot and the backrest to fold oppositely and draw together, the transmission connecting rod is telescopic link, or, a plurality of installation sites are set up on the transmission connecting rod and are connected with the support foot and the seat frame, the utility model's purpose lies in providing a support foot linkage of folding deck chair and support mechanism that is stable in structure and is convenient to store and transport.

The utility model relates to fruit processing technical field provides the dehydration device for fruit processing, including drying dehydration tank, the inside of drying dehydration tank is opened has the movable slot, the inside of drying dehydration tank is opened has the first guide groove, the inside of drying dehydration tank is opened has the second guide groove, the inside movable link of drying dehydration tank has the movable stand, the bottom fixed connection of movable stand has the movable board, the outer wall fixed connection of movable stand has the first guide block, the outer wall fixed connection of movable stand has the second guide block. The utility model discloses through the movable stand, can make movable board along movable slot direction sliding, makes movable stand sliding and pushes into drying dehydration tank, plays the effect of conveniently and stably fast loading to fruit, thereby promotes the efficiency of the dehydration processing to fruit, because the inside of first guide groove and second guide groove is the downward inclined slot, can prevent movable stand accidental sliding, realizes the location after loading.

This invention relates to the field of capsulorhexis technology and discloses a cataract capsulorhexis device, comprising a capsulorhexis forceps body and handles fixedly installed on both sides of the forceps body. The clamping end of the forceps body is provided with two forceps tips. A positioning rod is fixedly installed on one inner wall of the forceps body, and positioning openings are provided on the other inner wall of the forceps body and the handles. A positioning component is provided at the end of the positioning rod away from the forceps body. This invention allows for flexible selection of forceps tips at different angles according to the progress of the surgery, the condition of the operated eye, and the holding habits of medical staff. Installation is simple and quick. During capsulorhexis, the locking component and the positioning component work together to stably lock the forceps tips in a closed state, eliminating the need for continuous force exertion by medical staff, effectively reducing hand burden and avoiding hand soreness and stiffness. Unlocking requires only a light press of the locking component, making operation simple, saving surgical time, avoiding disruption to the surgical rhythm, and ensuring precise surgical execution.

The application discloses an inner-outer layer refrigeration freezer, which comprises a box body and a refrigeration module, and first air duct components and second air duct components are arranged on the two side walls of the inner cavity of the box body respectively; the refrigeration module comprises an evaporator; the lower part of the first air duct component is provided with a first air inlet facing the inner cavity of the box body, the evaporator is arranged in the air duct of the first air duct component, the upper part of the first air duct component is provided with an axial flow fan, and the axial flow fan is located above the side of the evaporator facing the inner cavity of the box body; the lower part of the second air duct component is provided with a second air outlet facing the inner cavity of the box body, and a cross flow fan is arranged in the air duct of the second air duct component, and the air outlet of the cross flow fan is aligned with the second air outlet. The inner-outer layer refrigeration freezer can make the inner-outer layer refrigeration areas to be reduced to the fresh-keeping temperature, and can preserve freshness and facilitate taking.

This utility model provides a lamp tube storage and collection device, relating to the field of lamp tube storage and collection technology. It aims to solve the problems of poor protection of lamp tubes in existing lamp tube collection and collection devices, resulting in easily damaged lamp tubes and affecting their later use. The device includes a workbench with casters evenly distributed on its bottom. Bases are evenly distributed on the workbench, and lamp tubes are placed on the bases. A cover plate is movably connected to the bases, and the shapes of the cover plate and the inner walls of the bases are matched to the shape of the lamp tubes. A rod is installed at the bottom of the cover plate, and a groove is provided on the bases, with the rod fitting into the groove.

The utility model discloses an ostomy bag pouring device which effectively solves the problem that an ostomy bag is inconvenient to pour. Comprising a rectangular box in the left-right direction, an opening of the rectangular box faces rightwards, the left end of the rectangular box is detachably connected with a flushing box, the upper end of the flushing box is connected with a flushing pipe, sliding grooves in the left-right direction are formed in the front side wall and the rear side wall of the rectangular box correspondingly, and sliding plates are slidably connected into the sliding grooves; the front side wall and the rear side wall of the rectangular box are each provided with two vertically-symmetrical guide grooves, the guide grooves are in an inverted L shape and located between the two sliding grooves, rectangular blocks are slidably connected into the guide grooves, and inserting columns inserted into the kidney-shaped grooves in the corresponding sides of the rectangular blocks are fixed to the opposite ends of the rectangular blocks on the front side and the rear side correspondingly. Sliding rods in the left-right direction are fixed to the sides, away from the kidney-shaped grooves, of the rectangular blocks correspondingly, and blocking rods are arranged on the upper side and the lower side of an opening of the rectangular box correspondingly; the device is simple in structure, convenient to operate, novel in conception and high in practicability.

This utility model discloses a buffer pack for working at heights, specifically relating to the technical field of protective equipment for working at heights. It includes a buffer pack with a safety belt fixedly installed on one side. The buffer pack has an internal buffer cavity containing a polyethylene foam board. An adjustment mechanism is also included inside the buffer pack. This mechanism includes a connecting plate fixedly installed on the inner wall of the buffer pack. A rotating shaft is rotatably mounted at one end of the connecting plate, and one end of the shaft passes through and is rotatably connected to the buffer pack. A winding roller is fixedly mounted on the surface of the rotating shaft, and a safety rope is wound around the surface of the winding roller. This utility model allows workers to flexibly adjust the length of the safety rope to adapt to different work scenarios. It also ensures smooth deployment and retraction of the safety rope, preventing tangling and knotting, providing comprehensive, convenient, and efficient safety protection for working at heights. Furthermore, it effectively absorbs the impact of falls, reducing the risk of injury to workers.

The utility model provides a cooling device for manufacturing hardware products, which comprises a water tank, a support frame arranged above the water tank, a mounting frame arranged at the upper end of the support frame, a plurality of rotating rods rotationally arranged in the mounting frame, a plurality of fixing blocks uniformly arranged at the left ends of the rotating rods, water covers arranged on the fixing blocks, and gears arranged at the right ends of the rotating rods. According to the cooling device for hardware product manufacturing, cooling water can be sprayed to a hardware product through the water cover to cool the hardware product, and the rotating rod can be driven to drive the water cover to swing through the fixing block through cooperation of the rack plate and the gear, so that the water spraying angle of the water cover is adjusted, and the cooling effect is improved. Therefore, the cooling water flow can cover the surface of a product needing to be cooled more accurately, the problem of local overheating or insufficient cooling is avoided, and the cooling efficiency of equipment is improved.

The utility model relates to the technical field of clamp locking, disclose a kind of aircraft target calibration clamp locking mechanism, including fixed plate, the left side of the fixed plate is provided with aircraft target calibration clamp main body, the left side of the aircraft target calibration clamp main body is provided with aircraft fixed block.The aircraft target calibration clamp locking mechanism is provided with threaded sleeve and thread groove by setting, rotates rotating block, rotating block drives bidirectional threaded rod to rotate in the inside of thread groove, bidirectional threaded rod can make threaded sleeve resist fixed plate and move in the inside of thread groove, so that fixed plate is pulled by locking rod and moves close to aircraft fixed block by pressing block, so that pressing block and baffle can be clamped to aircraft fixed block and aircraft target calibration clamp main body, so that aircraft target calibration clamp main body and aircraft fixed block can be clamped, aircraft target calibration clamp main body and aircraft fixed block can be locked, the problem that it is not convenient to lock target calibration clamp according to the height of aircraft fixed block is solved, and flexibility is poor, there is greater limit.

The utility model discloses a clamping device for rubber tire detection, which belongs to the technical field of rubber tire detection and comprises a first mounting box, a second mounting box arranged at the top of the first mounting box, and a clamping assembly arranged at the top of the second mounting box and used for clamping during tire detection. The clamping assembly comprises a first motor fixedly mounted in the second mounting box, the output end of the first motor penetrates through the second mounting box and is connected with a rotating disc, and a plurality of sliding grooves are formed in the top of the rotating disc. The rotating disc drives the sliding groove to drive the connecting column to move, the connecting column drives the connecting plate to move, the fixing plate is driven to move, and then the tire is fixed, so that the tire can be kept stable in the detection process, measurement errors caused by movement or shaking of the tire are reduced, and the detection accuracy is improved. Therefore, the accuracy of detection results is improved.

The utility model relates to the technical field of active agent storage tanks, and discloses a storage tank for transferring a surfactant, a servo motor is arranged to drive a first chain wheel to rotate, a second chain wheel rotates synchronously through transmission of a chain, an adjusting screw rod is fixed at the bottom of the second chain wheel, and the rotation of the second chain wheel drives the adjusting screw rod to rotate. According to the thread transmission principle, rotation of an adjusting screw rod enables a movable annular plate to move downwards along a guide groove in the outer side of a supporting leg, so that universal wheels gradually descend to make contact with the ground to support the storage tank, and at the moment, an operator can easily change the carrying direction and conveniently move the storage tank by means of the steering characteristic of the universal wheels; the movable annular plate moves upwards under the limitation of the guide groove, the universal wheels are folded accordingly, and the storage tank is supported by the supporting legs, so that accidental sliding of the tank body caused by continuous contact of the universal wheels with the ground is effectively avoided, and potential safety hazards such as loosening of a connecting pipeline and material leakage are prevented.

This invention relates to the field of building construction, and more particularly to a positioning device and construction method for improving the pass rate of bridge deck pavement. It provides a positioning device and construction method that improves the stability between the device and the bridge railing, and effectively winds up the measuring rope, thereby improving the pass rate of bridge deck pavement. The positioning device and construction method for improving the pass rate of bridge deck pavement includes a housing, first pulleys, cylinders, connecting rods, and handles. Four first pulleys are connected to the top of the housing, and cylinders are connected to the lower right side of the housing. Connecting rods are connected to the bottom of the cylinder extension rods, and symmetrical handles are connected to the top of the housing. This invention improves the stability of the device during measurement and movement by pulling the sliding frame, preventing the device from falling due to improper operation. Simultaneously, the winding pulleys can wind up the rope, reducing the phenomenon of rope tangling and knotting.

The utility model relates to the technical field of drag chains, and discloses a dust-free drag chain with good protectiveness, which comprises a connector and a driving mechanism, the driving mechanism comprises a connecting frame, and a second gear is rotatably arranged in the middle of one side of the connecting frame; a ratchet wheel is fixedly arranged on one side of the second gear, and a rotating handle is fixedly arranged on one side of the ratchet wheel. A first gear and a third gear are fixedly arranged at the upper end and the lower end of one side of the connecting frame correspondingly. A second transmission shaft is fixedly arranged on one side of the first gear, and a first transmission shaft is fixedly arranged on one side of the third gear. The first gear, the third gear and the second gear are meshed with one another. A first thread is fixedly arranged on the side, close to the first gear, of the second transmission shaft. According to the utility model, the installation efficiency is high, and the device can be accurately adjusted to adapt to different cables; the cable is prevented from twisting and falling off due to rigid connection; locking is reliable, installation stability is guaranteed, and use safety is improved.

The utility model relates to the technical field of training equipment, and discloses portable tendon training equipment for old people, which comprises a shell, an adjusting mechanism is mounted on one side of the shell, connecting mechanisms are arranged on one side of the shell and one side of the adjusting mechanism, supporting mechanisms are arranged on two sides of the bottom of the shell, and the supporting mechanisms are connected with the adjusting mechanism. A storage mechanism is arranged at the bottom of the shell, the connecting mechanism comprises two main shafts, a plurality of second springs are fixedly connected to the inner walls of the two sides of each main shaft, a sliding plate is fixedly connected to the other end of each second spring, a clamping ball is fixedly connected to the other end of each sliding plate, and connecting rods are installed on the two sides of each main shaft. According to the utility model, the sliding type sealing cover is used for protection, all the structures are precisely matched, the use stability is ensured, rapid disassembly and assembly and folding are realized through connection modes of nesting, buckling, threads and the like, the overall size is minimized, and carrying and storage are convenient.

The utility model discloses a movable container type sprout vegetable planting house, including the planting house body, the planting frame is arranged in the planting house body, the planting house body one end is provided with through -hole, the fan is fixedly installed in the through -hole inboard, and the through -hole is provided with depth filter screen in, the through -hole inside symmetry is provided with the slot, and the slot is fixedly installed with locking shell in, depth filter screen one end symmetry fixed mounting has inserted rod, and inserted rod is matched with the slot, the utility model discloses through pressing depth filter screen and realizes quick unlocking, and inserted rod drives trapezoidal block extrusion elastic locking block, makes locking rod exit limit slot, and unfastens the reset spring of pressing and pushes the sliding block back and moves, lets elastic locking block and trapezoidal block separate, and it can draw out inserted rod to complete disassembly to pull outwards, the whole process does not need tool, only through pressing and pulling operation can realize the quick disassembly of depth filter screen, is convenient for washing or replacement, improves maintenance convenience, guarantees filter screen filtering effect.

The utility model relates to the technical field of wireless data transceivers, and discloses a wireless data transceiver with an infrared function, which comprises a bottom plate, the back of the top of the bottom plate is fixedly connected with a fixing plate, and the front of the fixing plate is provided with a fixing mechanism. And the T-shaped groove is matched with the T-shaped block, so that the pressing plate can easily slide up and down. When the transceiver main body is installed, the pull plate is pulled to drive the T-shaped block and the pressing plate to ascend, after the transceiver main body is placed at a proper position on the bottom plate, the pull plate is loosened, and the pressing plate is pressed downwards under the gravity effect of the T-shaped block to tightly press the transceiver main body. At the moment, the bolt is rotated to tightly abut against the position, close to the front face, of the left side of the fixing block, the T-shaped block is further fixed through friction force, accidental sliding of the T-shaped block due to external force vibration and other factors is prevented, it is ensured that the transceiver body is stably installed on the bottom plate, and the problems of unstable connection or abnormal data transmission and the like caused by shaking and displacement in the using process are effectively avoided.

This utility model discloses a diamond composite cutting tool, comprising: a cutting head with a diamond cutting edge mounted at its lower end and a connecting section at its upper end, the connecting section having a limiting hole on its peripheral wall; a cutting shank with a mating hole at its lower end that fits with the connecting section and allows the connecting section to be inserted to achieve torque transmission, the mating hole having a movable hole aligned with the limiting hole on its peripheral wall; a movable limiting post having a first limiting state and a first clearance state; and a retaining member for limiting the movable limiting post in the first limiting state, keeping the movable limiting post in the first limiting state. The cutting head of this utility model, through the mating hole between the connecting section and the cutting shank, achieves positioning and docking between the cutting head and the cutting shank, and the movable limiting post ensures a reliable connection between the cutting head and the cutting shank. In the first limiting state, the movable limiting post is partially embedded in the limiting hole of the connecting section, ensuring that the cutting head will not loosen during processing, thereby improving processing accuracy and tool life. Furthermore, disassembly does not require removing fasteners, making operation simple and convenient.

The utility model discloses a double -deck spin open separation formula bottle lid structure, specifically at related to bottle lid structure field, including the outer cover, is equipped with the anti -skid groove of multiple circumferential array on the outer cover outer wall, is equipped with the first protruding of outer cover inner wall top, is equipped with the internal thread of outer cover inner wall bottom, is equipped with the inner cover between internal thread and the first protruding, the inner cover and outer cover swing joint, is equipped with the first recess of inner cover top, the first recess and the first protruding swing joint, the fixed connection of multichannel top cover has in inner cover top, the fixed sleeve of multichannel top cover center fixed connection, the rotating connection of fixed sleeve center has the adjusting assembly, and the adjusting assembly is used for realizing the channel change of multichannel top cover. The utility model discloses through the linkage mechanism of knob and rotating plate, has realized the flexible adjustment of multichannel top cover, can choose the different flow mode such as full -open, big hole or small hole according to the demand, has completely got rid of the traditional bottle lid and needs the spare or the trouble of the aid of auxiliary tool, brings more convenient, accurate use experience for the user.

The utility model discloses a multifunctional oven, it includes external connection baking tray subassembly, adjustable assembly and support component, the bottom of external connection baking tray subassembly is installed with adjustable assembly, and the bottom of adjustable assembly is installed with support component, external connection baking tray subassembly includes sealed heat insulating ring, sliding slot, heat insulating sealing board, pull buckle, support ring and baking tray body, the inside of sealed heat insulating ring is seted up with sliding slot, and the inside sliding connection of sliding slot has heat insulating sealing board, and the end of heat insulating sealing board is fixedly connected with pull buckle, a top of sliding slot is provided with support ring, and the outer wall of support ring is fixedly connected with baking tray body. The sealing effect of heat insulating sealing board in this embodiment, the heat is better locked in the oven, and hot air can be fully circulated in the oven, so that food is evenly heated in each part, not only improves the cooking efficiency, but also can ensure that food is baked with uniform luster, excellent taste quality, gives full play to the function and performance advantage of oven.

The movable arm structure of the tower crane comprises a tower body, a base station is rotationally arranged on the tower body; a control room is arranged on the base; a hoisting movable arm is rotationally arranged on one side of the base table; a supporting rod is arranged on the base; a first pull rod is connected between the supporting rod and the hoisting movable arm; a second pull rod is connected between the supporting rod and the base station; a movable arm balancing device is arranged on the lower side of the abutment; the movable arm balancing device comprises a balancing frame fixedly arranged on the lower side of the base table. A sliding groove is formed in one side of the balance frame. A balance weight module is arranged in the sliding groove in a sliding mode. A fixing sleeve is arranged on the outer side of the counterweight module; a worm gear is rotationally arranged on the lower side of the balancing frame relative to the fixing sleeve; a threaded rod is fixedly arranged on one side of the fixing sleeve and penetrates through the worm wheel. The worm gear is in threaded connection with the threaded rod; the balancing frame is provided with a motor on one side of the worm gear; a rotating shaft of the motor is connected with a worm; and the worm and the worm gear are in meshed connection.

The utility model relates to the technical field of hydrogen production equipment, in particular to a movable precise cutting device for an ultra-long profile. Comprising a base frame, a baffle arranged at the head end of the base frame, a supporting roller assembly located at the tail of the base frame, a supporting platform moving along the base frame, a profile cutting machine installed on the supporting platform and a positioning assembly used for fixing the supporting platform to the base frame. The supporting platform is arranged on the base frame, the fixed measuring scale is arranged in the length direction of the base frame, the fixing assembly is used for fixing a section bar, and the guiding assembly is used for guiding the movement of the supporting platform on the base frame, so that the supporting platform plays a role in supporting the super-long section bar, prevents the section bar from bending and drooping, and can be moved and adjusted according to the length of the section bar; the overall levelness of the profile is ensured; the supporting platform is fixed to the base frame by arranging the positioning assembly, accidental sliding caused by shaking when the sectional material cutting machine cuts sectional materials is prevented, and the cutting precision is guaranteed.

The utility model relates to the technical field of ion chromatographs, and discloses an ion chromatograph which comprises a machine table, the bottom end of the machine table is fixedly connected with a bottom plate, the top end of the left side in the machine table is provided with a display screen, and the top end of the top plate is provided with a mounting plate. According to the ion chromatograph, the shell, the limiting clamping plates, the limiting springs and the dampers are arranged, and the diameter of the top end between the limiting clamping plates is larger than that of the bottom end between the limiting clamping plates, so that the bottom end of the leaching box can be directly placed between the limiting clamping plates, the limiting clamping plates do not need to be pulled to move, and the ion chromatograph is simple in structure and convenient to use; when a leaching box is placed between limiting clamping plates, limiting springs enable the limiting clamping plates to limit and fix the leaching box through elasticity of the limiting springs, the situation that the leaching box accidentally inclines to affect use is prevented, dampers in the limiting springs can improve the stability of the limiting springs, and the problem that the leaching box is inconvenient to limit and fix is solved. And the stability of the leaching box is easily influenced.