225results about How to "Guaranteed installation" patented technology

The invention belongs to the technical field of motor assembling equipment, and particularly relates to top cover wire assembling equipment which comprises a rack. The material moving device is mounted on the rack and is provided with a plurality of stations; the positioning device is mounted on the material moving device; the wire frame device is mounted on the material moving device; the jacking device is mounted on the rack or the material moving device; the locking device is mounted on the rack; the discharging device is installed on the rack and located beside the material moving device. A top cover and an electric wire are positioned through the positioning device and the wire frame device, the positioned top cover and the positioned electric wire are transferred to the locking device through the material transferring device, the electric wire is straightened through the jacking device, a nut is tightened to the top cover through the locking device, and installation of the electric wire is completed. The blanking of the product is realized through the blanking device; a mechanical production mode is adopted to replace traditional manual nut tightening operation, the production efficiency is improved, manpower and time are saved, the nut tightening quality is ensured, and the product percent of pass is increased.

The invention discloses an integrated comprehensive actual measurement system for offshore platform floating support installation, and belongs to the technical field of offshore platform installation monitoring. The system at least comprises five subsystems including a marine environment monitoring system, a hull motion monitoring system, a fender load monitoring system, a DSU module separation monitoring system and an omnibearing video monitoring system, and an integrated comprehensive monitoring platform for managing the subsystems in a centralized manner. All the subsystems collect all-directional monitoring and module separation data in the floating support installation process through sensors and data transmission and transmit the data to the integrated comprehensive monitoring platform. The integrated comprehensive monitoring platform carries out unified coordination management to realize operation window decision, and a field surveying and mapping scheme is successfully guided to realize centimeter-level ship entry so as to complete offshore platform installation. According to the method, safe and reliable operation of the system in the floating support installation monitoring process is guaranteed, the floating support installation operation risk is greatly reduced, and successful installation of the offshore platform is powerfully guaranteed.

The invention belongs to the technical field of motor assembly, and particularly relates to an automatic motor assembly production line which comprises a conveying mechanism, a feeding mechanism, a discharging mechanism, a bolt mounting mechanism, a bolt supply mechanism and a jacking mechanism. The feeding mechanism is used for feeding workpieces; the discharging mechanism is used for working discharging. The bolt mounting mechanism comprises a rack, a machine head and a cantilever connected with the rack and the machine head, a rotating assembly used for driving the cantilever to rotate and a lifting assembly used for lifting are arranged on the rack, and a plurality of screwing assemblies corresponding to bolt mounting positions on a workpiece are arranged on the machine head; the bolt supply mechanism is used for supplying bolts; the jacking mechanism is used for jacking a workpiece during bolt installation; a workpiece is jacked up through the jacking mechanism, then a plurality of bolts are installed and screwed at the same time through a plurality of screwing assemblies on the bolt installation mechanism, the production efficiency is effectively improved, the stress uniformity of the installed bolts is guaranteed, the installation quality is improved, automatic assembly is achieved, and time and labor are saved.

The invention provides a fluid supply cup cover and a fluid supplier, the fluid supply cup cover comprises a cover body with one end being a liquid inlet and the other end being a liquid outlet, the side wall of the cover body extends from the liquid inlet to the liquid outlet, the corresponding part of the liquid inlet is used for being connected with a cup body of a fluid supply cup, the side wall extends at the liquid inlet to form a barrel-shaped wall, and the barrel-shaped wall is provided with a liquid outlet. The extension surface of the barrel-shaped wall is parallel to the axis of the liquid inlet to form a parallel flow guide direction; an included angle is formed between the extending surface of the side wall between the liquid inlet and the liquid outlet and the axis of the liquid outlet, and the extending surface of the side wall forms an inclined flow guide direction, and is characterized in that a filter is arranged on the cup cover, a filtering area parallel to the flow guide direction and perpendicular to the filter is arranged on the liquid inlet side of the filter, and a filtering area parallel to the flow guide direction and perpendicular to the filter is arranged on the liquid outlet side of the filter. An included angle is formed between the inclined diversion direction and the filter area of the filter. It is guaranteed that the maximum gravity decomposition force is obtained in the flow guide direction, paint can overcome the resistance of the filter screen conveniently, the paint passing through the filter screen keeps a certain flow speed, and the liquid supply amount is guaranteed.

The utility model provides a needle withdrawing mechanism of an implantation tool. The needle withdrawing mechanism comprises a shell, a push shooting piece, an implantation needle assembly and a limiting block, the push shooting piece is buckled on the shell; the pushing and shooting piece comprises a pushing and shooting piece body and a pushing and shooting piece buckling part, and the pushing and shooting piece buckling part and the pushing and shooting piece body jointly define a needle locking cavity; the implantation needle assembly comprises a needle cap, an implantation needle and a needle withdrawing driving part, one end of the implantation needle is connected with the needle cap, the other end of the implantation needle extends out of the push-shooting part, and the needle withdrawing driving part is connected with the needle cap; the limiting block is buckled on the shell; the limiting block abuts against the push-injection piece buckling part and limits the position of the push-injection piece buckling part so that the needle head cap can be buckled into the needle locking cavity through the push-injection piece buckling part. And after the pushing and shooting piece is tripped from the shell, the buckling part of the pushing and shooting piece can be separated from the limiting block, so that the needle withdrawing driving piece drives the implantation needle to withdraw. Meanwhile, the utility model further provides an implanting tool. Compared with the prior art, the needle withdrawing mechanism of the implanting tool and the implanting tool provided by the utility model can reduce the assembling difficulty.

The utility model relates to a connector sealing uncovering structure and a bending type opening connector, the connector sealing uncovering structure comprises an insulation cap used for plugging an opening at one side of a connector housing, and the periphery of the insulation cap is sleeved with a sealing rubber ring used for realizing radial sealing between the insulation cap and the opening. The tail end of the insulating cap and the cover plate are detachably connected or integrally designed, and the insulating cap is detachably fixed on the connector shell through the cover plate. According to the utility model, the insulation cap and the sealing rubber ring are preassembled, the insulation cap and the cover plate are detachably connected, and the insulation cap, the sealing rubber ring and the cover plate are fixed on the connector shell after being connected into a whole, so that the assembly and disassembly are convenient, the movement of the insulation cap can be avoided, and the sealing performance of the connector is ensured.

The invention discloses a buckle type self-locking column type insulator wire clamp, an installation tool and a use method of the installation tool, and relates to the technical field of insulator installation. The invention provides a buckle-type self-locking column-type insulator wire clamp and an installation tool, and the wire clamp comprises an installation plate, the bottom end of the installation plate is fixedly connected with a supporting rod, the bottom end of the supporting rod is fixedly connected with a handle, the supporting rod is internally and rotatably connected with a rotating rod, the rotating rod penetrates through the installation plate, and the bottom end of the rotating rod is fixedly connected with a rotating handle. And the mounting plate is rotationally connected with a dismounting sleeve rod. The dismounting sleeve rod is controlled by the supporting rod to sleeve the bolt to rotate and dismount the bolt, the wire clamp is controlled by the supporting rod to move to the position above the insulator, the wire clamp is pressed downwards and clamped with the insulator through the buckle stretching and retracting to achieve rapid installation, and meanwhile the situation that the cable falls off due to the fact that the bolt shakes and falls off can be avoided; under the condition that the safe distance is kept, operation of bolt dismounting and cable remounting can be achieved.

The invention provides a hard disk storage system, a server and computer equipment, and relates to the technical field of hard disk storage. The hard disk storage system comprises a first mainboard, a second mainboard, a backboard and an E3 hard disk, the first mainboard is connected with the backboard through a first high-density connector, the second mainboard is connected with the backboard through a second high-density connector, the E3 hard disk is connected with the backboard through a hard disk connector, and the hard disk connector is located between the first high-density connector and the second high-density connector. According to the hard disk storage system, the server and the computer equipment, the first mainboard and the second mainboard are connected with the backboard through the high-density connectors respectively, the E3 hard disk is connected with the backboard through the hard disk connector, and the hard disk connector is arranged between the first high-density connector and the second high-density connector; the connection position of the first high-density connector and the second high-density connector on the backboard cannot interfere with the hard disk connector, and it is ensured that both the E3 hard disk and the mainboard can be installed on the backboard.

The present invention discloses a component and construction method for casting a large-span steel corridor concrete corbel without a support, which specifically includes the following operation steps: S1. Design a concrete corbel construction hanger according to a construction plan; S2. Process and obtain a finished concrete corbel construction hanger; S3. The installation position of the hanger and the lower hanging fulcrum of the steel corridor; S4. After the finished hanger is installed, a construction platform is set up, a corbel steel frame is compiled and an I-beam is installed; S5. A corbel construction support is set up, and the support is moved to the construction platform for supporting the corbel steel frame; S6. An elastic support is set up on the top of the corbel steel frame, and square wood is set up on the corbel construction support for installing a concrete corbel construction template, and concrete is poured, and after the concrete strength reaches the standard, the template is removed to obtain the large-span steel corridor concrete corbel. The construction method of the present invention can conveniently perform the casting operation of the corbel at the bottom of the steel corridor under relatively low-risk conditions by using the steel corridor as a lower hanging fulcrum to set up the corbel template system.

The invention relates to the technical field of antenna detection, in particular to a laser cutting antenna line type defective product detection method and system, and the method comprises the steps: obtaining processing batch information, building a coiled material motion coordinate system, and storing target antenna parameters and reference information of a dispensing region; acquiring image data of the antenna, and aligning the image data with the reference information in the coiled material motion coordinate system; extracting an antenna boundary according to the image data, and calculating a geometric deviation based on the antenna boundary and the reference information; obtaining a defect coordinate position according to the geometric deviation, and comparing the dispensing area with the geometric deviation to judge the severity of the defect; mapping the coordinate position to a coiled material motion coordinate system to obtain bad position data, and executing differentiation processing according to the severity; and storing the bad position data and the processing batch information corresponding to the differentiation processing, and generating a detection result. According to the invention, the antenna boundary and geometric deviation are analyzed through the image data and the reference information, defects in the antenna cutting process are identified, and the detection accuracy is improved.

The invention discloses an environment-friendly gas ring main unit gas tank wire inlet sleeve, which comprises a fixing part, a wire inlet sleeve, a wire outlet sleeve and a wire outlet sleeve, the plug-in component is plugged in the fixed component, and a high-voltage conductor is arranged in the plug-in component; wherein the cabinet body is provided with a round hole corresponding to the fixing part, the fixing part is provided with a cavity corresponding to the plug-in part, and the plug-in part can be fixed on the outer side of the cabinet body through the fixing part; according to the invention, the sleeve and the round rod can be conveniently installed on the cabinet body, no auxiliary tool is needed, the rapid installation of the wire inlet sleeve can be realized, and the installation efficiency is improved; the wire inlet sleeve can be detached from the outer side of the cabinet body, a worker can directly operate outside the cabinet body during operation, operation is more convenient and rapid, meanwhile, the device can achieve rapid detachment and installation of the wire inlet sleeve, and then operation efficiency is improved. And through the arrangement of the positioning part, the sleeve is prevented from sliding when the round rod is mounted, the mounting of the round rod can be ensured, and the wire inlet sleeve can be stably mounted.

The utility model relates to the technical field of stationary pollution source flue gas ultrasonic velocimeters, and discloses an inner and outer barrel circulating air cooling device of a flue gas ultrasonic velocimeter, which comprises a sampling inner pipe body, a mounting seat is connected inside the lower end of the sampling inner pipe body, and an ultrasonic transducer is embedded in the middle of the lower end of the mounting seat. An air inlet is connected to one side of the upper part of the sampling inner pipe body, an electric control box is connected to the upper end of the sampling inner pipe body, a first flange plate is welded to one side of the outer end of the sampling inner pipe body, and a sampling outer pipe body is welded to the lower end of the first flange plate; by arranging the inner layer and the outer layer, installation and sealing of the ultrasonic transducer can be guaranteed, circulating air cooling of the inner barrel and the outer barrel can be formed, circulating air cooling can be achieved by controlling the air inlet amount of the draught fan, the requirement for the normal working temperature of the ultrasonic transducer is met, and measurement accuracy is guaranteed.

The utility model provides an indoor unit of an air conditioner, which comprises a water pan arranged below an indoor heat exchanger; the indoor heat exchanger comprises a first-section heat exchanger, and the bottom end of the first-section heat exchanger is located behind the top end of the first-section heat exchanger in the front-back direction of the main body; in the front-back direction of the main body, the bottom end of the second-section heat exchanger is located in front of the top end of the second-section heat exchanger; the second-section heat exchanger is positioned behind the first-section heat exchanger; the third-section heat exchanger is positioned above the first-section heat exchanger; the space on the front side of the indoor fan can be fully utilized, the space in the height direction is fully utilized, the heat exchange area is increased, the heat exchange effect is improved, the height size is small, and the air conditioner indoor unit can be installed above a window or a door; an indoor air inlet is formed in the front side of the water pan; at least part of the indoor air inlet is located on the front side of the water pan and located below the third-section heat exchanger, and heat exchange of the first-section heat exchanger and the third-section heat exchanger is facilitated.

The utility model relates to the technical field of industrial personal computers, in particular to an industrial personal computer for communication, which comprises a bottom plate and a vertical plate, the left side and the right side of the top of the bottom plate are fixedly connected with the bottom of the vertical plate respectively, the outer wall of the vertical plate is fixedly connected with the industrial personal computer, and the bottom of the industrial personal computer is fixedly connected with the top of the bottom plate. The left side and the right side of the bottom plate are connected with installation structures correspondingly, and the front face of the industrial personal computer is connected with a protection structure. In the mounting structure, a tool clamps a front protruding edge to rotate, the rotating protruding edge drives a front screw rod to rotate, then a rear protruding edge is clamped to drive a rear screw rod to rotate, slow rotation of the front screw rod and the rear screw rod is achieved, the situation that a straight plate is inclined and clamped due to rotation of a single screw rod is avoided, and the rotating screw rod can be matched with a square plate to drive the straight plate to move outwards; the distance between the straight plates on the left side and the right side is adjusted, then the bottoms of the straight plates are attached to the connecting positions, bolts penetrate through the straight plates from top to bottom to be fixed to the connecting positions, normal installation of the industrial personal computer is guaranteed, and normal use of the industrial personal computer is guaranteed.

This utility model relates to a highly practical air fryer, comprising a body and a cooking chamber with an open side opening inside the body. A top-opening frying basket is detachably suspended within the cooking chamber through the side opening. The frying basket includes a pot body made of metal. An air duct plate is located directly above the top opening of the pot body, guiding hot airflow through the top opening into the pot body. A gap exists between the bottom wall of the pot body and the bottom wall of the cooking chamber. By providing a suitable gap between the pot body and the bottom wall of the cooking chamber, friction between them can be reduced, and the high temperature inside the pot body can be better transferred to the bottom wall of the cooking chamber through the bottom wall of the pot body, thereby increasing the temperature of the bottom wall of the cooking chamber and reducing the likelihood of water vapor condensing on the bottom wall of the cooking chamber.

The utility model discloses a welding coaxiality tool of a stuffing mixer rack. The welding coaxiality tool comprises a movable end support, a connecting pipe, a flange plate, a middle sealing plate, a base, a herringbone square pipe and a support plate. The middle sealing plate is fixed to the right end of the base, the herringbone square pipe is arranged at the left end of the base, the support plate is fixed to the herringbone square pipe, the movable end support and the flange plate are arranged at the left end and the right end of the connecting pipe respectively in a sleeving mode, the movable end support is placed on the support plate, a front mounting hole and a rear mounting hole are formed in a bottom plate of the movable end support, and the support plate is provided with a front mounting hole and a rear mounting hole. The movable end support is connected with the bracket plate; the right mounting section of the flange plate is connected with the positioning hole of the middle sealing plate, and the left connecting section is connected with the middle sealing plate through a screw. According to the welding coaxiality tool, on the premise that it is guaranteed that the center of the support plate on the left side and the center of the middle sealing plate on the right side are coaxial, the position between the herringbone square pipe and the base is welded and determined, and it is guaranteed that the center of the tipping support and the center of the middle sealing plate are coaxial.

A side panel assembly and a vehicle are disclosed. The side panel assembly (100) includes an outer side panel (10) and an inner side panel (20) sequentially arranged and fixedly connected along the direction from the outer side of the vehicle door to the inner side. The side of the inner side panel (10) away from the outer side panel (20) is connected to the side assembly (200). The lower ends of the outer side panel (20) and the inner side panel (10) together define a mounting structure (30) for mounting a window frame sealing strip (60). A vehicle including the above-described side panel assembly (100) is also provided. The side panel assembly (100) and the vehicle can improve the aesthetics of the vehicle and reduce costs.

The utility model is suitable for the technical field of weighing equipment, and provides an automatic material metering scale, which comprises a main frame body, a weighing device, a weighing device and a weighing device, and is characterized in that the main frame body is internally provided with a supporting part; the storage bin is installed on the main frame body and installed on the supporting part, a weighing piece for integrally weighing the storage bin and materials in the storage bin is arranged between the storage bin and the supporting part, installation plates are symmetrically arranged on the side wall of the storage bin, the weighing piece is arranged between the installation plates and the supporting part, and the weighing piece is arranged on the supporting part. And the weighing piece is used for detecting the stress state between the mounting plate and the supporting part, so that the technical effect of more accurately controlling the blanking weight is achieved by arranging a structure for carrying out clearance type weighing on the blanking weight and controlling the blanking weight change and the blanking amount.

The application discloses a device foundation bolt lengthening method and a tightening device in the technical field of device installation, the tightening device comprises a handle and a mounting ring mounted on the end of the handle, the tightening device further comprises a sleeve ring rotatably mounted in the mounting ring, a plurality of groups of slotted holes are formed in the outer side wall of the sleeve ring, an insertion block for being inserted into the slotted holes is slidably arranged on the mounting ring, a pressing block is slidably arranged on the handle, and a connecting rope is arranged between the pressing block and the insertion block, in the application, a screw rod with a nut is processed, internal threads are processed on the screw rod, the screw rod with the nut is directly connected with a pre-buried bolt, the length of the pre-buried bolt is increased, normal installation and fixation of the device are ensured, the difficulty of construction is reduced, the construction period is shortened, the work efficiency is improved, the construction progress of the project is ensured, and the engineering cost is reduced.

The utility model discloses a general type sewage intercepting device suitable for rainwater grate, including rainwater grate, the detachable hoist of rainwater grate has the sewage intercepting basket, and the detachable sleeve connection of sewage intercepting basket has disposable filter screen bag, and disposable filter screen bag covers sewage intercepting basket inner wall, and disposable filter screen bag bottom is placed with tray and is connected in the bottom of sewage intercepting basket, disposable filter screen bag is located between sewage intercepting basket and tray, uses the hoist, makes sewage intercepting basket and rainwater grate keep linkage, whether the sewer whether is equipped with corresponding clamping groove can fixed sewage intercepting basket, improves the efficiency of installation and dismantling simultaneously, can install or dismantle simultaneously, overflow is carried out through the tray, and fine silt and pollutant are first deposited, and the silt amount of entering the drain is reduced.

The invention discloses an electric meter box with a warning function, and the electric meter box comprises a box body, the interior of the box body is slidably provided with two groups of moving boxes, the far surfaces of the two groups of moving boxes are provided with limiting plates, the end surface of the box body is provided with a first sealing door through a hinge, and the end surfaces of the two groups of moving boxes are provided with grooves. Second sealing doors are mounted on the inner walls of the two sets of grooves through hinges, avoiding grooves are formed in the inner wall of the box body and the inner walls of the two sets of moving boxes, multiple sets of rotating rollers are arranged in the three sets of avoiding grooves, mounting covers are mounted on the two sides of the box body, and positioning grooves are formed in the two sides of the interior of the box body; mounting screw rods are mounted in the two groups of positioning grooves, and magnet sleeves are slidably connected to the side walls of the two groups of mounting screw rods in a sleeving manner. The electric meter box with the warning function has the beneficial effects that by arranging the moving box, it is guaranteed that more electric meter boxes are stacked in the transportation space, and convenience is brought to transportation of the electric meter box with the warning function.

The utility model discloses a quick change support and an electric vehicle, the quick change support is used for being installed on a vehicle beam of the electric vehicle to fix a battery pack, the quick change support comprises a cantilever beam module and a reinforcing connection module, the cantilever beam module is arranged on the side edge of the vehicle beam, the reinforcing connection module is arranged on the upper portion of the vehicle beam, and the cantilever beam module is connected with the reinforcing connection module. The reinforcing connection module of the quick-change support is arranged above the vehicle beam, so that the whole quick-change support is lifted relative to the vehicle beam, the space occupied by the quick-change support on the side face of the vehicle beam is reduced, and the side face area of the vehicle beam can have a larger space for installing other structures of the electric vehicle. The possibility that the quick-change support interferes with other structures of the electric vehicle is reduced, normal installation of the quick-change support is guaranteed, the side face and the upper end face of the vehicle beam can serve as areas connected with the quick-change support, and therefore the connecting strength of the quick-change support and the vehicle beam is enhanced, and the quick-change support can support the battery pack more stably.

The utility model provides a diaphragm type transformer oil conservator which comprises a shell, an oil conservator, a diaphragm and a liquidometer, a support is fixedly arranged at the top of the shell, the oil conservator is fixedly arranged on the support and communicated with the shell, the diaphragm is fixedly arranged in the middle of the oil conservator and divides the oil conservator into an upper cavity and a lower cavity, and the liquidometer is arranged at the top of the oil conservator in a lifting mode. And the diaphragm is fixedly connected. According to the diaphragm type transformer oil conservator, the oil conservator and the diaphragm are arranged in a matched mode, it is guaranteed that oil can be isolated from air when flowing to the oil conservator, the oil is prevented from making contact with the air, the oil amount in the oil conservator can be observed conveniently through the liquid level meter, oil supplementing is carried out accordingly, the upper half bin and the lower half bin are arranged in a matched mode, the diaphragm is convenient to install, and the oil conservator is convenient to use. Through the arrangement of the sealing ring, the sealing performance of the oil conservator is ensured, the service life of the diaphragm is prolonged, and through the matched arrangement of the graduated scale and the diaphragm, the graduated scale can measure the height of the oil level along with the height of the diaphragm.

The invention provides a pressure cooker cover and a pressure cooker. The pressure cooker cover comprises a cover body; the opening stopping valve is arranged on the cover body in a penetrating mode and can ascend and descend along the cover body; the first locking piece is arranged on one side of the opening stopping valve, and the first locking piece is rotationally connected to the cover body and can rotate in the direction close to or away from the opening stopping valve so as to lock or loosen the opening stopping valve; the second locking piece is arranged on the edge of the cover body and can slide in the axial direction of the cover body so as to lock or loosen the pressure cooker cover; the operating part is movably connected to the cover body, and the operating part drives the first locking part and the second locking part to move, so that one of the first locking part and the second locking part is in a locked state, and the other one is in a loosened state. The use safety of the pressure cooker can be improved.

The utility model relates to the field of textile machines, in particular to a novel spinning machine waterproof device which comprises a wall plate, a water baffle, a spraying pipe and a plate waterproof mechanism, the plate waterproof mechanism comprises a sealing gasket and a water retaining ring, the water baffle is arranged on one side of the wall plate, the sealing gasket is arranged on one side of the water baffle, and the spraying pipe is arranged on the water baffle. The water retaining ring is arranged on one side of the sealing gasket and used for isolating water flow, a first protrusion is arranged on one side of the water retaining ring, the top of the water retaining ring is higher than the sealing gasket, the spraying pipe is arranged on the top of the water retaining ring and used for spraying water, and when the spraying pipe sprays water, the first protrusion is used for blocking the water flow on one side of the water retaining plate. The method has the effect of guaranteeing the service life of the parts.

The utility model relates to a pier column steel bar positioning device, and relates to the field of prefabricated pier column construction technologies. The device comprises a truss and two positioning plates, the two positioning plates are both connected to the truss and distributed at intervals, each positioning plate is provided with a circle of positioning holes for steel bars to penetrate through, and a bubble level is arranged on the truss. Accurate positioning of the embedded steel bars and correction of the perpendicularity of the embedded steel bars are achieved, and installation of the pier column is guaranteed.

The utility model relates to the technical field of double-layer type exhaust manifolds, in particular to a double-layer type exhaust manifold which comprises a straight pipe and vertical pipes, the top of the straight pipe is communicated with the bottoms of a plurality of vertical pipes, the top of the outer wall of each vertical pipe is fixedly connected with a first flange, the bottom of the outer wall of the straight pipe is connected with a control structure, and the control structure is connected with a second flange. A round pipe is slidably clamped to the front portion of the inner wall of the straight pipe, a second flange is fixedly connected to the front end of the outer wall of the round pipe, a first handle is matched in a control structure to drive a first screw to rotate downwards through a bottom plate, then an arc plate moves downwards, meanwhile, the arc plate drives a vertical rod to move downwards through the bottom plate, and the vertical rod plays a role in limiting the arc plate; when the double-layer type exhaust manifold is installed, the moving arc plate enables the straight pipe on the inner wall to move downwards, then the vertical pipe and the first flange are driven to move, normal installation of the double-layer type exhaust manifold is guaranteed, and normal use of the double-layer type exhaust manifold is guaranteed.

The utility model discloses a tower crane installation structure which comprises a base plate and a base assembly embedded in concrete, the base assembly comprises a pile foundation column, an embedded bottom plate and positioning bolts, the embedded bottom plate is installed at the bottom of the base plate through the pile foundation column, and the positioning bolts are arranged in the circumferential direction of the embedded bottom plate. The pre-embedded bottom plate is connected to a concrete bottom base layer through positioning bolts, fixed installation of the pre-embedded bottom plate is reinforced, the overstress reinforcing device is dispersed to concrete, and a part of stress can be offset through the stress reinforcing device, so that protection of the interior of the concrete and sharing of the bearing force of the tower crane are achieved; the fastening nut abuts against the top end face of the bolt cylinder so that the bolt cylinder can be fixedly installed through the fixing bolt rod, and the part, extending out of the bolt cylinder, of the fixing bolt rod and a tower crane standard knot are installed so that a tower crane can be fixedly installed.

The utility model provides a purlin lengthening device, including first connecting plate and second connecting plate, two through holes are provided with along the width direction of first connecting plate in the first end of first connecting plate, two long holes are provided with along the width direction of first connecting plate in the second end of first connecting plate, the end of the side of the through hole and the purlin's to be installed composite board is connected through first bolt nut combination, the second connecting plate is rectangle board, two perforations are provided with in one end of second connecting plate, first connecting plate and second connecting plate are connected through the second bolt nut combination of being set up on long hole and perforation, the other end of second connecting plate is fixed with the purlin welding of purlin near, the composite board is installed and fixed with purlin, first connecting plate and / or second connecting plate. The utility model can be used to install between the end of the purlin near, the wall composite board of auxiliary installation.