30results about How to "Keep the position fixed" patented technology

The utility model discloses a photoelectric platform stabilizing device, the utility model relates to photoelectric platform technical field, including base, the middle part fixedly connected with fixed block in the base inner wall, the fixed block inner wall fixedly connected with first motor, the output end transmission of first motor has the rotary disc, the upper surface fixedly connected with stabilizing device of rotary disc. This photoelectric platform stabilizing device, through setting stabilizing device, positive and negative toothed rod cooperation limiting rod drive clamping stable frame synchronous relative motion can realize even clamping to different size photoelectric equipment, avoid equipment to shake, the cover plate further prevents equipment from falling off, ensure that the equipment is fixed in the position in the working process, when the first motor drives the rotary disc to rotate, the limiting ring on fixed plate and the limiting block under rotary disc accurate adaptation, limit the radial displacement of rotary disc, reduce the shake, guarantee the stability when azimuth adjustment.

The utility model discloses an automatic flexible freight bag girdle sewing machine which comprises a machine frame, a sewing machine head installed on the top of the machine frame, a workbench arranged on the top of the machine frame, a sewing channel formed in the top of the workbench, a feeding mechanism arranged on the outer side of the machine frame, a limiting mechanism arranged on the outer ring of a needle rod of the sewing machine head, and a girdle disc installed on the top of the sewing machine head. By means of the feeding mechanism, the flexible freight bag can be conveyed to a sewing station of the workbench, meanwhile, the shroud ring is released from the shroud ring disc and directionally guided to the sewing position through the second guide roller, and a needle rod of the sewing machine head is matched with the sewing channel to complete automatic sewing of the shroud ring and the flexible freight bag. By means of the structure, it can be guaranteed that the position of the shroud ring is fixed in the sewing process, wrinkles, position deviation and the like are avoided, accurate positioning and efficient sewing of the container bag and the shroud ring are achieved through the structure, production efficiency is improved, and consistency of sewing quality is guaranteed.

The utility model discloses an injection molding product surface functionalization modification treatment device which comprises a bottom plate, the middle end of the top of the bottom plate is fixedly connected with a frame, the upper end of the outer side of the frame is fixedly connected with a bag-type dust collector, and the bottom of the outer side of the bag-type dust collector is fixedly provided with a dust collector through bolts. The air inlet end of the dust collector communicates with one side of a bag-type dust collector through a pipeline, and the top of the bag-type dust collector is fixedly connected with a second dust collection plate through a pipeline. According to the utility model, the bag-type dust collector is matched with the dust collector, and the second dust collection plate, the second dust collection cover, the first dust collection plate and the first dust collection cover are arranged, so that dust and chippings generated in the surface modification treatment process of injection molding products, such as polishing, can be effectively sucked away in time. The cleaning of the working environment can be kept, the risk that operators inhale dust is reduced, the body health of the operators is protected, the pollution of dust to the treatment device and injection molding products can be avoided, and the treatment quality is improved.

The utility model relates to a kind of special-shaped part end face processing jigs, including sleeve, sleeve is the structure that top end is completely open, the bottom end of sleeve is provided with integrally formed circular table, the bottom end of circular table is fixedly connected with fixed column, the top end of sleeve is provided with downward first recess, first recess extends to the bottom side of circular table, the side of sleeve about the right end of first recess is provided with front and back symmetry opening, the top end of fixed column is provided with downward second recess, fixed column and circular table are screwed with same limit sleeve, by using above-mentioned technical scheme, sleeve top end is open and is provided with first recess, and the side of sleeve has about the opening of first recess symmetry, special-shaped part is conveniently put into sleeve, under the cooperation of first recess and second recess, the slot width of first recess and second recess is shortened by rotating limit sleeve to realize the locking of this tooling, ensure that special-shaped part position is fixed when processing, improve processing precision and quality, reduce the defective rate of special-shaped part.

The utility model discloses a kind of axial flow centrifugal compressor for compressed air energy storage, it is related to energy storage technical field, comprising: axial flow section, centrifugal section and main shaft;The axial flow section has casing and the axial flow rotor in the casing, the centrifugal section has volute and the centrifugal rotor in the volute, the casing is connected with the volute;The axial flow rotor is connected with the one end of the main shaft by fastener, the centrifugal rotor is sleeved on the main shaft, the upstream end of the centrifugal rotor is supported on the boss of the main shaft the downstream end of the centrifugal rotor is detachably connected with the main shaft by connecting structure.The utility model technical scheme, axial flow rotor and centrifugal rotor are respectively set as detachably connected with main shaft, so that axial flow rotor, centrifugal rotor and main shaft can be separately produced, for large flow, high pressure ratio compressor, independent production facilitates each part manufacturing.

This utility model discloses a universal fixture for mobile phone case processing, relating to the field of mobile phone case processing technology. It includes a base plate with multiple slots on its surface. Each slot contains a matching insert block. A bracket is fixedly connected to the top of each insert block. A main fixture is mounted on the top of the bracket, and a positioning mechanism is located on the top of the main fixture. The positioning mechanism includes a positioning frame, which is positioned on the top of the main fixture. A positioning threaded hole is formed on the top of the positioning frame, and a foolproof pin is fixedly connected to one side of the threaded hole. By rotating the positioning pin, its height and position can be precisely adjusted, enabling accurate positioning of the mobile phone case. This ensures the mobile phone case remains in a fixed position during processing, improving processing accuracy and product quality. Simultaneously, the foolproof pin effectively prevents the mobile phone case from being placed in the wrong orientation, further improving the accuracy and convenience of operation.

The present application relates to the field of supporting the expanding shaft, in particular to a kind of air pressure mechanical inner expanding mechanism, including fixed shaft, inclined plane axle and rotating shaft, the surface of rotating shaft is all set with through hole around, each through hole is equipped with a steel ball, the surface of inclined plane axle is set with the inclined plane ring groove that is engaged with steel ball around a week at the position corresponding steel ball, the position of rotating shaft around corresponding each steel ball is also equipped with an arc surface heat conduction sheet, rotating shaft is coaxially equipped with rubber expansion sleeve, rotating shaft is equipped with elastic recovery component around, the end of rubber expansion sleeve towards fixed shaft is equipped with coaxial limiting component, the present application is supported fixed tube core by rubber expansion sleeve, and by keeping the coaxial state between tube core and rotating shaft by coaxial limiting component, so that rubber expansion sleeve is kept stable when being processed, in order to restore the elasticity of rubber expansion sleeve, by elastic recovery component to improve the heat of rubber expansion sleeve, so that rubber expansion sleeve restores elasticity, improves the processing effect of tube core.

The utility model discloses a testing arrangement for semiconductor processing, including conveying frame, the inside of conveying frame is provided with conveyer belt, the front end and rear end of conveyer belt upper middle are respectively arranged with the positioning board of symmetry, the outside of two positioning boards all rotatory mounting has power box, the side of power box away from positioning board is fixedly installed with transmission plate, and the inside of power box at left side is provided with motor cavity, the motor cavity inside of power box is fixedly installed with motor, and the output of motor is fixedly connected with positioning board, the both sides in conveying frame inside are respectively arranged with the slot of symmetry, the both sides of conveying frame are respectively arranged with fixed folding plate of symmetry. It has realized the turnover ability, has increased the practicality, thereby solved the problem that does not have the turnover structure when the appearance defect of semiconductor device is tested, is not favorable to the defect detection of semiconductor device positive and negative sides.

The utility model discloses a kind of adjustable lifting appliance structures for silicon package hoisting, including lifting appliance crossbeam, symmetric strip hole is equipped in crossbeam bottom surface, the lifting hook fixing base with lifting hook is installed in hole, middle part is equipped with winding rope cylinder, traction rope is wound in winding rope cylinder two ends by fixed seat top surface vertical board connection.The traction rope is retracted by motor drive winding rope cylinder, drive lifting hook fixing base to move in strip hole, adjust lifting hook distance, adapt to different specifications silicon package hoisting.Lifting hook fixing base top surface is equipped with spacer to prevent falling, strip hole middle guide rod cooperates with spring to ensure smooth movement;Counterweight is equipped at the opposite place of motor in the side of crossbeam, weight is balanced, crossbeam bottom surface rack and lifting hook fixing base electromagnetic lock occlusion realize position locking.The lifting appliance structure disclosed in the application is convenient and efficient, and the structure is stable and reliable.

The utility model discloses a filter detection mechanism, the utility model relates to filter detection technical field. Including installation platform, be provided with the installation mechanism for filter detection on the installation platform, and installation mechanism includes: protection subassembly, including the support frame fixed in installation platform both ends, the utility model is in the non - detection state or needs protection high -definition discernment camera, and starts second electric push rod, and second electric push rod elongation, and promotes protection shell to revolve around the rotation axis, and two sets of protection shell close, and will high -definition discernment camera airtight protection, when needs to carry out detection, second electric push rod contracts, and draws protection shell and opens, makes high -definition discernment camera expose and carries out detection work, can provide airtight protection space for high -definition discernment camera under the non - detection state, effectively prevent dust, sundries, collision etc. to cause damage to the camera, prolong the service life of camera, reduce maintenance cost.

The drawing hose comprises a corrugated pipe, the corrugated pipe is arranged in a supporting pipe in a penetrating mode, a water outlet assembly is connected to the corrugated pipe, the outer side of the corrugated pipe is sleeved with a locking sleeve and a releasing sleeve, the locking sleeve is connected with the supporting pipe, one end of the locking sleeve extends into the supporting pipe, and a fixing part is arranged at the end of the locking sleeve; the fixing part can be connected with the outer side of the corrugated pipe in a clamped mode, the release sleeve is located between the corrugated pipe and the locking sleeve, and the release sleeve can be inserted into the locking sleeve and can open the fixing part. The locking sleeve and the releasing sleeve are arranged on the corrugated pipe, the fixing part is arranged at the end, inserted into the supporting pipe, of the locking sleeve, and the fixing part can be connected with the outer side of the corrugated pipe in a clamped mode, so that the drawing length of the corrugated pipe is fixed, and flushing operation is facilitated; and meanwhile, the release sleeve can be inserted into the locking sleeve to open the fixing part so as to unlock the corrugated pipe, so that the corrugated pipe is convenient to retract, and the use is convenient.

The utility model discloses a modularization high-temperature hot box of an elasticizer, which belongs to the technical field of elasticizers and is characterized by comprising a box body, a heating assembly is arranged in the box body, a limiting assembly is arranged on the front side of the heating assembly, the heating assembly comprises a U-shaped supporting plate, a heating wire is arranged at the bottom of the inner wall of the U-shaped supporting plate, and the limiting assembly is arranged on the front side of the U-shaped supporting plate. The heating assembly comprises a U-shaped supporting plate, a heating wire is arranged in the U-shaped supporting plate, a hot rail is arranged in the U-shaped supporting plate, the bottom of the hot rail is tightly attached to the heating wire, sliding grooves are formed in the two sides of the inner wall of the U-shaped supporting plate, sliding blocks are fixedly connected to the bottoms of the two sides of the hot rail, and the sliding blocks are used in cooperation with the sliding grooves. Operators can easily draw out the hot rail along the sliding groove only by releasing limitation of the limiting assembly, compared with traditional fixed installation, numerous parts do not need to be disassembled, operation is easy, convenient and rapid, maintenance time is greatly saved, and production continuity is guaranteed.

The multifunctional clothes hanger comprises a clothes hanger body, a hook is arranged on the clothes hanger body, supporting arms are arranged on the two sides of the hook respectively, receding openings are formed between the supporting arms and the clothes hanger body, the receding openings are located at the positions close to the hook, and a plurality of positioning bosses are arranged on the side faces of the supporting arms. Positioning elastic pieces are arranged on the positioning buckles, clamping grooves are formed in the positioning buckles, the supporting arms are inserted into the clamping grooves, positioning grooves are formed in the side walls of the clamping grooves, and the positioning grooves are connected with the positioning bosses in a clamped mode. When the clothes hanger is used, a user can adjust the relative position of the positioning buckle according to the size of a collar of clothes, the collar is clamped through the positioning elastic piece, it is guaranteed that the position of the clothes is fixed, the situation that the clothes fall off is effectively avoided, in addition, the supporting arms can be used for airing shoes, and the functionality of the clothes hanger is enriched.

The utility model discloses a protection mechanism of a film laminating machine, which relates to the technical field of film laminating machine protection, and comprises a rack and a film laminating machine body arranged on the rack, two vertical plates are fixed at the upper end of the rack, the two vertical plates are respectively arranged on two sides of the film laminating machine body, a transverse plate is fixedly connected between the two vertical plates, and the transverse plate is fixedly connected with the rack. A protective cover is arranged below the transverse plate, a lifting air cylinder is installed at the upper end of the transverse plate, the telescopic end of the lifting air cylinder downwards penetrates through the transverse plate and is fixedly connected to the top of the protective cover, two safety grating mechanisms are arranged between the two vertical plates, and the two safety grating mechanisms are arranged on the two sides of the film laminating machine body respectively. The protective cover solves the problems of equipment damage and potential safety hazards caused by accidental touching of limbs of an operator or entering of foreign matters in film covering operation, can ensure that the position of the closed protective cover is fixed, and keeps the stability of a protective state.

This utility model belongs to the field of multifunctional tool finishing technology, and discloses a finishing sheet structure, including a detachably connected finishing sheet, a mask, and a pin. The finishing sheet can be snapped into the mask, and the pin is inserted into the connection between the finishing sheet and the mask to lock them together. The finishing sheet structure includes at least a first locking state, a second locking state, and a third locking state. In the first locking state, the movement of the finishing sheet in a third direction is limited; in the second locking state, the movement of the finishing sheet in both the third and first directions is limited; in the third locking state, the movement of the finishing sheet in the third, first, and second directions is limited. This utility model simplifies disassembly and assembly operations and improves efficiency through the detachable connection of the finishing sheet, mask, and pin, and the locking of the pin. It also allows for the replacement of the finishing sheet, facilitating DIY creations or adding features such as fluorescent elements or compasses to enrich its functionality and expand its applicability.

The utility model discloses a kind of barreled water film cutting devices, including bottom plate, the bottom plate upper side wall center is provided with rotating rod, rotating rod is provided with placing tray, the bottom plate bottom wall is provided with first motor, rotating rod lower end is through the bottom plate and is connected with the first motor output end, the bottom plate upper side wall rear end is provided with support rod, the support rod upper end is provided with support plate, the support plate front end is provided with pneumatic cylinder, the pneumatic cylinder lower end is provided with fixed block, the fixed block lower end is provided with the positioning plate of rotationally connected therewith, the bottom plate and the placing tray junction are provided with limiting component, the bottom plate one side is provided with auxiliary plate, the auxiliary plate one end is provided with winding mechanism, the bottom plate one side is provided with cutting assembly, fundamentally solve the cutting quality uneven problem caused by barrel body instability when manual operation, reduce the labor intensity of operator.

The utility model discloses a kind of hanging basket support frame fixed mounting structure, include floor structure, the hanging basket of being set in the floor structure below, track assembly connected on floor structure, base assembly with track assembly sliding connection, support frame assembly with the detachable connection of base assembly and the hanging rope between support frame assembly and hanging basket is set up. The utility model is through the setting of support hanging frame, it is conducive to guarantee the installation support of hanging basket;The utility model is through the setting of base assembly, it is conducive to guarantee the support of support hanging frame and support;And the setting of main base assembly in base assembly, its sliding connection with track unit, guarantee the convenient construction in the moving process of hanging basket;The utility model is through the setting of track assembly, not only provides switching basis for the final connection of hanging basket and embedded part, also provides basis for hanging basket sliding through the setting of track, wherein the setting of track bayonet can effectively guarantee the limiting fixing after the positioning of hanging basket on building slope.

This utility model provides an automatic gluing device for cardboard box splicing, including a support frame, a conveyor belt, and a glue applicator. The conveyor belt is mounted on the support frame, and the glue applicator is mounted on the upper middle part of the support frame. The glue applicator includes hydraulic rods, a fixed plate, a glue applicator box, and a motor. The hydraulic rods are symmetrically mounted on both sides of the support frame. The two ends of the fixed plate are connected to the hydraulic rods respectively. A moving groove is opened in the middle of the fixed plate, and a screw is installed in the moving groove. The glue applicator box is placed in the moving groove, and the screw passes through the glue applicator box. The motor is located on one side of the fixed plate and connected to the screw. A glue injection pipe is connected to the top of the glue applicator box. This utility model provides an automatic glue applicator for cardboard used in splicing cardboard boxes. It can adjust the width of the glue applicator range, automatically perform positioning glue applicator, significantly improve the efficiency of the glue applicator process, ensure the position of the cardboard is fixed during the glue applicator process, accurately control the amount of glue used, avoid excessive glue application, save glue consumption, ensure glue bonding quality, and reduce drying time.

This utility model discloses a fixture for inspecting the condition of engine bearings on a winged aircraft. It includes a bracket, a screw, and a pressure plate mounted on the aircraft's observation window. The bracket has a mounting surface with an oblong hole. The pressure plate is mounted on the mounting surface by a locking screw and has a stepped through hole, which is a strip-shaped through hole extending in the same direction as the oblong hole. A threaded sleeve is threaded onto the screw, with its bottom engaged within the stepped through hole. The sleeve can move along the extension direction of the stepped through hole. The bottom of the screw passes through the stepped through hole and the oblong hole sequentially, and a copper sleeve is mounted on the top of the screw. The advantages of this utility model are: when mounted on the aircraft's observation window, rotating the screw brings the copper sleeve into contact with the sensor probe. During testing, simply pressing the screw ensures the sensor probe's position is fixed, thus guaranteeing measurement accuracy, reducing measurement errors, and avoiding human error.

The invention discloses a plug-in power converter which comprises a direct current module, a power module, a first butt joint piece and a second butt joint piece, the direct current module comprises a capacitor busbar and a plurality of connectors, the power module comprises an installation base body and an input row, the input row can achieve electric connection between the power module and the direct current module in a mode of being plugged into the connectors, and the first butt joint piece is connected with the second butt joint piece. The first butt joint piece and the second butt joint piece are fixedly arranged on a capacitor busbar of a direct current module and an installation base body of a power module respectively and can be in plug-in fit in the front-back direction, and therefore the input bar is guided to be inserted into a corresponding connector in a correct posture. Besides, after the second butt joint piece and the input row polar plates are fixedly connected to the bending limiting piece and tightly attached to the bending limiting piece respectively, the second butt joint piece and the input row polar plates are fixedly connected to the installation base body through the bending limiting piece, it can be guaranteed that the polar plates of the input row and the second butt joint piece are fixed relative to the positions of the installation base body, and therefore the positions of the polar plates and the second butt joint piece are relatively fixed. And deformation of the input row polar plate is avoided, so that assembly errors are reduced.

This utility model discloses a protective rebar cutting machine for construction, including a workbench and rebar. A receiving mechanism is installed on both sides of the top of the workbench, and two clamping mechanisms are arranged between the receiving mechanisms. The two clamping mechanisms are fixedly installed on the top surface of the workbench. A limiting plate is movably installed on one side of each receiving mechanism. One end of the limiting plate is threadedly connected to a threaded rod, and the other end is slidably connected to a sliding rod. One end of the threaded rod is rotatably connected to a first limiting block, and the other end of the threaded rod rotates through a second limiting block and is fixedly connected to a knob. Both the first and second limiting blocks are fixedly connected to the top surface of the workbench. A scale is marked between the first and second limiting blocks on the top surface of the workbench. Support blocks are fixedly connected to both ends of the sliding rod, and the support blocks are fixedly connected to the top surface of the workbench.

This utility model discloses a continuous stamping structure for automotive hardware parts, belonging to the field of automotive hardware. It includes a worktable and a stamping plate. A pressure-applying and fixing device is provided on the top of the worktable, comprising two first limiting grooves. This utility model, by setting up hydraulic cylinders, a first pressure plate, a second pressure plate, a first return spring, a second return spring, a first limiting groove, a second limiting groove, and a buffer spring, allows the two hydraulic cylinders to synchronously drive the symmetrical first and second pressure plates. After the parts are pressed, the return springs, first limiting grooves, and second limiting grooves provide uniform and stable pressure from four directions, achieving stable clamping of the automotive hardware parts during stamping and ensuring the parts are fixed in position during stamping. This improves production quality and efficiency and reduces the design and installation costs of the fixing device.

The utility model discloses a wood mould positioning structure for sand casting, which relates to the technical field of sand casting and comprises a sand box mounting mechanism, the sand box mounting mechanism comprises a sand box body, a first positioning mechanism is mounted on the inner side of the sand box body, and the first positioning mechanism comprises a threaded rod. The bottom supporting force can be provided for the pattern, a positioning pin and a second positioning rod are connected in an inserted mode, movement of the pattern in the front-back direction can be limited, a positioning semi-arc plate is in lap joint with the outer portion of a first positioning rod, the first positioning rod abuts against the outer side of the pattern by rotating a threaded sleeve, and the pattern is positioned in the left-right direction; movement of the pattern in all directions is limited, it is ensured that the position of the pattern is fixed in the molding process, and the situation that the size of a sand mold cavity is inaccurate due to movement or deviation of the pattern is avoided.

The utility model relates to a kind of gas turbine waste heat boiler inlet flue inner guard plate support structure, belong to waste heat boiler equipment technical field.The utility model includes outer guard plate, inner guard plate, the heat insulation cotton filled between outer guard plate and inner guard plate and the support nail of several even distribution in inner guard plate, support nail bottom and outer guard plate inner wall are welded, still include the support beam fixed in inner guard plate inner wall, support nail upper end portion is connected with support beam to constitute the T type support structure of supporting inner guard plate.The utility model is set up support beam on the position of bolt in inner guard plate, not only can increase the contact area with heat insulation cotton, more effectively compact heat insulation cotton, inner guard plate of inlet flue can also be significantly enhanced the support strength of inner guard plate, avoid the problem that inner guard plate is in because of high parameter flue gas scouring and produces concave deformation.

The utility model provides a screening mechanism of a tire crusher, which comprises a screening box, a plurality of uniformly distributed partition plates are arranged in the screening box, sliding rails are arranged in the middles of the partition plates, movable rings are arranged in the sliding rails in a sliding manner, screening cylinders are arranged among the movable rings, and a feed hopper is arranged on the upper side of the screening box. The feeding hopper and the screening barrel are installed in a matched mode, an avoiding opening is formed in the lower side of the screening box, a discharging pipe matched with the avoiding opening is arranged at the bottom end of the screening barrel, and a plurality of evenly-distributed spoilers are arranged on the inner wall of the screening barrel. According to the screening mechanism of the tire crusher, reciprocating shaking in the horizontal direction can be carried out in the process of driving the screening barrel to roll and rotate, and the spoilers arranged on the inner wall of the screening barrel are matched, so that the screening effect of the screening barrel can be effectively enhanced, meanwhile, the moving path of materials can be prolonged, and the screening effect can be effectively guaranteed.

The utility model discloses a tray for long valve plate processing, including positioning mechanism and tray main part, and positioning mechanism is by first locating seat, first connecting plate, second locating seat, and first connecting plate forms U -shaped groove with first locating seat and second locating seat are connected, and at least two first locating pins are fixed to first locating seat and set up upwards along the inside and outside direction, and the outside of first locating seat is fixed to set up upwards first limit baffle with, and at least two second locating pins are fixed to second locating seat and set up upwards along the inside and outside direction, and the outside of second locating seat is fixed to set up upwards second limit baffle with, and tray main part includes tray and support leg, and two rows of clamps are set up symmetrically upwards in the both sides of tray respectively, and support leg sets up in the bottom both sides of tray respectively, and the bottom both sides of tray still are provided with first locating hole with the position of first locating pin corresponds and second locating hole with the position of second locating pin corresponds, and tray main part is positioned and places in U -shaped groove.

The utility model relates to the technical field of electrical installation engineering, and discloses a metal power supply assembly splicing type installation seat which comprises an installation frame, a clamping groove is formed in the top of the installation frame, a clamping block is connected to the outer wall of the clamping groove in a sliding mode, and a circular plate is fixedly connected to the top of the installation frame. The top of the circular plate is in threaded connection with a second threaded column, the outer wall of the second threaded column is in threaded connection with a semi-arc plate, the outer wall of the semi-arc plate is fixedly connected with a connecting plate, the top of the connecting plate is fixedly connected with a supporting frame, and the top of the supporting frame is fixedly connected with a limiting ring. According to the utility model, firstly, the mounting rack is placed in the splicing groove, then the clamping block slides along the clamping groove in the edge of the mounting rack and is inserted until the bottom of the clamping block is tightly attached to the butt joint groove, the circular plate is placed on the mounting rack, and the semi-arc plate and the connecting plate are assembled by using the second threaded column; therefore, the position of the semi-arc plate on the connecting plate is fixed.

The utility model relates to the technical field of bearing outer surface detection, in particular to bearing outer surface defect strength measuring equipment which comprises a base, the base comprises a base, a rotating mechanism is installed on the upper surface of the base and comprises a second connecting plate, the lower surface of the second connecting plate is attached to the upper surface of the base, and the lower surface of the second connecting plate is attached to the lower surface of the base. A second groove is formed in the right side surface of the second connecting plate, a detection mechanism is installed in the second groove, the detection mechanism comprises a first electrifying block, one end of the first electrifying block is fixedly connected with the inner wall of the second groove, and a first spring is fixedly connected to the inner wall of the second groove; and the tail end of the first spring is fixedly connected with a second electrifying block. According to the utility model, whether the bearing piece is qualified or not and whether the bearing piece can be continuously used or not can be quickly judged, and the practicability of the device is improved.

The utility model relates to a tunnel sliding block core-pulling structure capable of automatically locking a mold, which comprises a sliding block used for extending into a mold frame tunnel, and a forming head consistent with a product is arranged at the head part of the sliding block; the tail part of the sliding block assembly is connected with a shovel base; the shovel base is driven by a linear driving module; a self-locking assembly is arranged on the shovel base, and in the mold closing state, the shovel base is locked to the mold frame through the self-locking assembly, so that the shovel base cannot drive the sliding block to exit from the tunnel; during mold opening, the linear driving module drives the shovel base to move, the self-locking assembly releases the lock, and the shovel base can drive the sliding block to exit outwards for mold opening; the shovel base is provided with a vacant stroke groove, and the linear driving module has an idle stroke in the vacant stroke groove and unlocks the self-locking assembly in the idle stroke state.

The utility model provides a civil engineering foundation pit supporting structure, and relates to the technical field of foundation pit supporting structures, the civil engineering foundation pit supporting structure comprises two supporting plates, a supporting device is arranged on the sides, close to each other, of the two supporting plates, the supporting device comprises a connecting frame, and supporting rods are rotationally connected to the two sides of the surface of the connecting frame respectively. Clamping plates are connected to the two ends of the supporting rod in a clamped mode correspondingly, the clamping plates are connected to the surfaces of the supporting plates in a clamped mode, a threaded rod is connected to the surface of the connecting frame in a penetrating and threaded mode, a bottom plate installed on the inner wall of the foundation pit is rotationally connected to one end of the threaded rod, and two stabilizing rods are fixedly connected to the surface of the bottom plate; when the civil engineering foundation pit is protected and supported, the two sides of the foundation pit can be extruded and protected conveniently, protection measures can be adjusted in time when the soil texture of the foundation pit is soft, foundation pits of different specifications can be protected, the using effect and functionality of the supporting device are improved, and the supporting device is suitable for popularization and application. And the operation of workers is more convenient.