168results about How to "Installation does not affect" patented technology

The invention provides an implanted pottery-stone connector for building decorative plates, and a dry-hanging installation technique thereof, which relates to a dry-hanging technique for building decorative materials. The dry-hanging technique adopts specific components and tools, and is characterized in that a plate is cut into finished-product material to be dryly hung according to construction requirements; the side or the back of the finished-product material is provided a T-shaped groove; a T-shaped bolt is placed in the T-shaped groove and then is directly connected with a building, or is combined with a washer and a nut to form a hanging piece for installation, wherein the T-shaped groove is or is not filled with cement gum; a mounting hole is drilled on a metal bracket before the metal bracket is installed; and after the installation of the metal bracket is finished, the hanging piece is arranged according to the position of the mounting hole. The invention has the advantages of realizing line production and factory construction, improving engineering quality, ensuring construction safety and simultaneously solving the technical problem that ceramic tiles, stones and plates usually fall off after installation.

The invention discloses a double-intermediate shaft transmission assembly matched with a parallel hydrodynamic retarder. The key point lies in that a double-intermediate shaft transmission assembly matched with a parallel hydrodynamic retarder, which is mainly matched with the parallel hydrodynamic retarder. According to the double-intermediate shaft transmission assembly, windows are additionally formed in a rear cover, the internal structure of the rear cover of a gearbox is regulated, and a retarder driven gear is additionally arranged in an auxiliary box of a transmission to ensure that a parallel hydrodynamic retarder shaft and an output shaft rotate at a certain speed ratio; the parallel hydrodynamic retarder is deviated on one side of the rear end of the transmission when being arranged in a matched manner, so that influence on the power taking-off of a power take-off unit of the transmission is eliminated.

An environment-friendly painting device comprises a mounting rack and painting assemblies symmetrically mounted on the left side and the right side of the mounting rack. Sliding cavities are symmetrically formed in the two sides of the mounting rack. Each painting assembly comprises a sliding frame mounted in the corresponding sliding cavity in a sliding manner and a rotating barrel rotationally mounted at the upper end of the sliding frame through a rotating pin shaft. A mounting groove is further formed in each sliding frame. A first electromotor is fixedly mounted in the side wall of each mounting groove. A tooth-shaped wheel is fixedly mounted on a conveying shaft of each first electromotor. A tooth-shaped strip connected with the corresponding tooth-shaped wheel in a matched manner is fixedly mounted on the outer ring of each rotating barrel. A sliding groove with an opening facing a pipe is formed in each rotating barrel. A control rod extending towards the pipe is mounted in each sliding groove in a sliding manner. A screw hole with an opening away from the pipe is formed in each control rod. A first screw shaft is mounted in each screw hole in a thread fit manner. Each first screw shaft is connected with a second electromotor fixedly mounted in the corresponding rotating barrel. Elastic painting arms used for penetrating into the pipe and used for painting are arranged on the end face, facing the pipe, of each rotating barrel in an up-and-down symmetry manner.

The invention discloses a buckle type connecting structure of solid wood or raw wood furniture. The buckle type connecting structure comprises a first furniture sheet material, a second furniture sheet material and a connecting piece which are connected correspondingly, wherein the connecting piece consists of two parts, namely a buckling plate and buckling screws; each buckling screw comprises a bolt and an embedded nut; the buckling plate comprises two fixed parts positioned at two ends, and a convex connecting part positioned in the middle; a clamping groove is formed in the connecting part, and is arranged in an inclined slope manner; the height is gradually decreased from the inlet end to the buckling end by taking the plane of the two fixed parts as basic reference. The buckle type connecting structure ensures the high-grade quality of solid wood and raw wood furniture, and is simple in structure and convenient to install, use and detach, thus the labor intensity is alleviated and the labor cost is reduced, the problems of great processing difficulty and low production efficiency in the traditional process are solved, the limitation of bearing capacity and stability for the three-in-one connecting piece is broken through, and a foundation is laid for realizing factory scale production of solid wood and raw wood furniture.

The invention discloses a device for efficient control of runoff nitrogen element pollution in mountainous region and city roads, and the device comprises a vegetation growth medium layer (2), a filter layer (3), a carbon source layer (4) and a secondary filter layer (5); the vegetation growth medium layer (2) has a thickness of 0.2 meter, and is formed by a soil type with higher permeability coefficient; the filter layer (3) has a thickness of 1 meter, and is prepared by mixing ceramsite, zeolite and other filler with adsorption capacity with quartz sand; the carbon source layer (4) has a thickness of 0.3 meter, and is prepared by mixing limestone with a persistent carbon source; and the secondary filter layer (5) is prepared by mixing adsorption filler and the quartz sand. The device has the following advantages: the device realizes short-term efficient removal of storm runoff nitrogen element concentration in mountainous regions and cities without power, not only realizes the rapid removal of nitrogen, also avoid secondary pollution of effluent; the device is flexible in arrangement and convenient in installation, does not affect the city landscape, and is especially suitable for the control of storm runoff nitrogen element pollution in heavy-slope road surfaces.

The invention relates to a composite sealing strip extrusion die and a molding technology using the composite sealing strip extrusion die. The extrusion die comprises a first flow channel piece, a second flow channel piece, a molding piece and a duckbilled piece, wherein the first flow channel piece, the second flow channel piece and the molding piece are connected into a whole; the duckbilled piece is formed by a connecting piece and a duckbill; the connecting piece is connected with the first flow channel piece; the duckbill penetrates through the first flow channel piece and the second flow channel piece; the centers of the connecting piece and the duckbill are respectively provided with a core material channel; the connecting piece is provided with a dense glue channel and a gelatin sponge channel around the duckbill; the first flow channel piece is provided with a first dense glue channel and a first gelatin sponge channel; the second flow channel piece is provided with a second dense glue channel and a second gelatin sponge channel; the molding piece is provided with a molding hole. When the extrusion die is used for molding, the core material is not needed to be pre-molded. The problems that the glue material covering the two sides of the core material is not uniform, the core material is missed and the like caused by the change of relative position of an opening die and the duckbill in the installation process can be effectively solved; the labor intensity of workers in the installation and disassembly processes of the opening die and the duckbill can be lightened, and the product switching time is shortened.

The invention provides a scaffold wall connecting part and a curtain wall replacement method. As the thickness of the scaffold wall connecting part used by the curtain wall replacement method is smaller than that of a gap between curtain walls, the installation positions of the curtain walls are calculated and a steel plate of the scaffold wall connecting part is arranged at the gap between the to-be-mounted curtain walls only before a scaffold is connected with a building body structure, the steel plate of the scaffold wall connecting part can penetrate through the gap between the new curtain walls during curtain wall construction, installation of the curtain walls is not affected, the situation that after the scaffold wall connecting part and the scaffold are dismounted, the curtain walls at the wall connecting part are installed through a hanging basket is prevented, and accordingly the construction efficiency and quality of the curtain walls are improved, and safety hazards are reduced.

The invention discloses a light-steel industrialized residential structure system and belongs to the technical field of steel structure resistance system. An exterior wall system comprises U-shaped steel wall frames and C-shaped steel wall columns. Each U-shaped steel wall frame comprises a square frame body sequentially enclosed by a U-shaped steel upper frame, a U-shaped steel left frame, a U-shaped steel lower frame and a U-shaped steel right frame. A U-shaped steel rail is fixedly mounted between the middle portion of each of the U-shaped left frame and the U-shaped right frame, cable-stayed steel belts are mounted diagonally in the square frame body, and a slot base of each of the U-shaped left frame and the U-shaped right frame is provided with a plurality of evenly-distributed through holes II. Each C-shaped steel wall column comprises C-shaped steel, and a slot base plate and two side plates of the C-shaped steel are provided with a plurality of evenly-distributed bolt holes III. The outer side of each of the U-shaped left frame and the U-shaped right frame is provided with a C-shaped steel wall column in a matched manner, and each bolt hole III in the C-shaped steel wall column is correspondingly arranged with each through hole II of each of the U-shaped left frame and the U-shaped right frame and are fixedly connected through bolts.

A constructional-column top steel bar embedded structure assembly comprises a concrete prefabricated member body, longitudinal tie bars, transverse tie bars and an anti-cracking net. The concrete prefabricated member body is a cuboid with unequal cross sections, and longitudinal constructional-column top steel bar preformed through holes are formed in the concrete prefabricated member body; the longitudinal tie bars are steel bars with hooks at one ends, the ends, provided with the hooks, of the longitudinal tie bars are vertically anchored in the concrete prefabricated member body, and the other ends of the longitudinal tie bars extend out of the upper portion of the concrete prefabricated member body; the transverse tie bars are strip steel bars, the middles of the transverse tie bars are anchored in the concrete prefabricated member body, and two ends of each transverse tie bar extend out a distance of the concrete prefabricated member body; the anti-cracking net is arranged in themiddle of the bottom of the concrete prefabricated member body. According to the constructional-column top steel bar embedded structure assembly and a method for installation and construction of constructional-column top steel bars, the problems that constructional-column top steel bars deviate and constructional-column top templates are difficult to dismantle can be solved, the construction quality can be guaranteed, and the construction cost can be reduced.

The invention relates to a full cross-section tunneling machine duct piece fast unloading and storage device, which is characterized by comprising a support frame, an ascending and descending frame, guide rails and an oil cylinder, wherein a guide rail is arranged at the inner side of each of the two vertical edges of the n-shaped support frame; the outer sides of the two vertical edges of the ascending and descending frame are glidingly connected into grooves of the guide rails through rolling wheels; the upper end of the oil cylinder is connected onto the support frame; the lower end of theoil cylinder is connected with the ascending and descending frame; the front side of the lower end of the ascending and descending frame is provided with ascending and descending feet; and a proximityswitch used for controlling the upper and lower positions of the ascending and descending frame is arranged on the support frame. The full cross-section tunneling machine duct piece fast unloading and storage device has the advantages that the full cross-section tunneling machine duct piece fast unloading and storage device is arranged under a trolley; the installation of original equipment is not influenced; the occupied space is small; the operation is convenient; the duct piece unloading function can be fast completed; after a duct piece is lifted, a train group can be separated out at anytime; the work efficiency is improved; the device can be applicable to the unloading of duct pieces with different diameters; the universality is high; and the application range is wide.

The invention belongs to the stockbreeding machine technical field, and particularly relates to a grass harvesting machine profiling method and a device. The grass harvesting machine profiling method is characterized in that according to technology characteristics of alfalfa, integrating floating devices, sliding palm devices and a hoisting device, achieving system profiling of a grass harvesting machine, improving profiling performance of the grass harvesting machine, and improving machine operating efficiency. The grass harvesting machine profiling device is mainly composed of the sliding palm devices 1, the floating devices 3 and the hoisting device 5, wherein one ends of the floating devices 3 are connected with a rack 4, and the other ends of the floating devices 3 are connected with a working device 2 in a hooking manner; the sliding palm devices 1 are installed on two sides of ground connection part of the working device 2; two ends of the hoisting device 5 are respectively connected with the rack 4 and the working device 2 in a hooking mode, and the floating devices can enable the working device to float with ground surface in working. Balance of the working device can be achieved by respectively adjusting the floating devices; included angles are arranged on the floating devices placed on both sides of the working device, the working device can be ensured to be stable and reliable in operation, and machine operating efficiency is improved.

The invention relates to a construction process of a stock yard. The construction process of the stock yard comprises the steps of constructing a retaining wall foundation after a pile foundation project is completely constructed, and constructing an upper structure of a retaining wall; then, constructing a discharging platform, and installing a structure of a factory site in a first part after the discharging platform is completely constructed; then, installing a beam part of the retaining wall and a first section of a ground infrastructure; installing a scraper reclaimer; and finally, performing debugging of equipment and ending work. Other construction process flows are reasonably inserted while constructing the abovementioned process procedure. According to the construction process ofthe stock yard, the construction period is greatly shortened on the premise of guaranteeing safety and quality, thereby being beneficial to saving cost.

The invention relates to the field of fittings of sliding windows and in particular discloses an invisible handle for a sliding window. The invisible handle comprises a handle and a handle base and is characterized in that the handle base is provided with a mounting groove corresponding to the handle in position, a torsion spring and a square cotter are fixed on the handle by virtue of an embossing shaft, the square cotter penetrates through a round hole in the handle base under the cooperation of a gasket and then is fixed on the other side of the handle base by virtue of a split cotter, and a cover is arranged in a screw mounting hole of the handle base. The invisible handle for the sliding window disclosed by the invention is simple in structure, convenient to use, reasonable in design, flexible in application and applicable to the sliding window, and does not influence the installation of a gauze window, so that the usability of the invisible handle is improved, and the invisible handle is applicable to widespread popularization and application.

The invention discloses a connecting structure of beam and column in a glass curtain wall. A frame of a curtain wall consists of perpendicularly overlapped columns and beams, the front end surfaces ofthe columns and the beams are flush with each other, connecting members are arranged in the length direction of the beams, and meanwhile the beams and the columns are connected; the lower end surfaceof a glass panel is connected with the connecting members, and the connecting members play a supporting role on the glass panel; and column heads are arranged on the front end surfaces of the columnsand used for fixing the glass panel. According to the connecting structure of beam and column in the glass curtain wall, the connecting members are arranged at the joints of the beams and the columnsin the length direction of the beams, the lower end surface of the glass panel is connected with the connecting members, the effects of connecting the beams and the columns and supporting the glass panel are achieved through the connecting members, the problem of easy reversion of the beams is solved, the profile is kept intact, a mold does not need to be opened to customize the aluminum angle code for cavity closed beams, and the connecting members are connected with the beams through T-bolts in T-slots, through connection between screws and the columns, mounting is more convenient, and theconstruction difficulty is reduced.

The invention belongs to the technical field of building floor deck, and particularly relates to a fabricated steel bar truss deck with a support. The steel bar truss deck comprises a template, wherein a steel bar truss is arranged on the template, and further comprises a template supporting system, wherein the template supporting system comprises a plurality of steel beams arranged side by side in parallel; the steel beams are supported below the steel bar trusses, and a plurality of inhaul cables arranged side by side in parallel are connected between every two adjacent steel beams; and a plurality of extendable supporting rods are arranged on each inhaul cable, and the upper ends of the extendable supporting rods are jacked on the template. The template and the supporting system are integrally designed, the fabricated mounting and disassembling template and the support are particularly suitable for the large-span floor deck, the temporary supporting working procedure is omitted, theconstruction period is shortened, and the template and the supporting system can be reused.

The invention discloses a four-direction belt conveyor self-deviation-adjusting roller with axial displacement. The four-direction belt conveyor self-deviation-adjusting roller comprises a roller shaft, a near-shaft inner pipe, a middle inner pipe, a near-tube inner pipe and a roller tube which are arranged in sequence from inside to outside, a shaft pin is arranged on the middle parts of the roller shaft and the near-shaft inner pipe, a front-rear deviation adjusting device and a left-right deviation adjusting device are arranged between the near-shaft inner pipe and the middle inner pipe, pipe end sealed bearing devices are separately installed at both ends of the middle inner pipe and the near-tube inner pipe in a sealing mode, and rubber seal sleeves are separately connected between the two ends of the middle inner pipe or the two pipe end sealed bearing devices and the roller shaft; the shaft pin, the near-shaft inner pipe, the middle inner pipe, the near-tube inner pipe and the front-rear deviation adjustment device are matched to realize the self-adjustment of a conveyor belt after the deviation of the front and back directions, and the middle inner pipe, the near-tube innerpipe and the front-rear deviation adjusting device are matched to realize the self-adjustment of the conveyor belt after the deviation of the left and right directions, so that the phenomenon of damage to the roller and other components caused by the deviation of the conveyor belt is reduced, all self-deviation-adjusting components are arranged in the roller, and the layout and installation of other components of a belt conveyor are not affected.

The invention relates to a high-voltage iron tower nut and particularly relates to a fastening type theft-proof nut. The fastening type theft-proof nut comprises a nut body and is characterized in that the nut body consists of a fastening sleeve and an inner nut; a prismatic structure for fastening is arranged at the outer part of the fastening sleeve; a round hole matched with the inner nut is formed in the fastening sleeve; the inner nut is of a cylindrical structure; a screw is tapped at an inner ring; a fastening ridge protrudes from an outer ring. The fastening type theft-proof nut with the structure has the advantages of being simple to install, convenient to use, good in theft-proof effect and incapable of being dismounted by an external force.

The invention discloses a mounting-facilitating transformer, which comprises a base, wherein multiple mounting holes are symmetrically formed in the base; four mounting slots are uniformly formed in the lower surface of the base; two grooves are symmetrically formed in the inner wall of each mounting slot; four first cavities and four second cavities are symmetrically formed in the base; a motor is arranged in each second cavity; a limiting rod is arranged in each groove; a fixed block is arranged on two limiting rods; supporting frames are arranged on the fixed blocks; the supporting frames are connected with rolling wheels in a rotatable manner; the fixed blocks are in threaded connection with two threaded rods. The mounting-facilitating transformer disclosed by the invention is simple in structure and convenient to use; by the arrangement of the rolling wheels, the transformer can move conveniently; furthermore, the rolling wheels can be collected into the mounting slots, so as to not affect the mounting of the transformer; meanwhile, by the arrangement of a vibration absorption device, damage to the transformer due to vibration generated in a moving process is reduced; by the arrangement of multiple different springs, the vibration absorption effect is guaranteed; the service life is prolonged; the transformer is worthy of being popularized.

The invention provides a fixing device for a lower pre-embedded steel plate of a shock insulation support seat, and a construction method thereof. The fixing device for the lower pre-embedded steel plate of the shock insulation support seat comprises an anchoring frame base arranged at the junction of a first-section pouring-tamping layer and a second-section pouring-tamping layer of a lower buttress, wherein a plurality of anchoring frame anchor bars stretching into the first-section pouring-tamping layer are fixed to the bottom surface of the anchoring frame base; a plurality of anchoring columns are fixed to the top surface of the anchoring frame base; an end plate is fixed to the top end of each anchoring column; a bolt is in threaded connection to each end plate; and the top end of each screw rod is fixed to the bottom surface of the lower pre-embedded steel plate. The problem of unqualified installation quality of a shock insulation support seat due to that a deflection of the position of a lower pre-embedded steel plate is easily caused in a process of pouring tamping a lower buttress in the prior art, is solved.

The invention discloses a fabricated shock absorption and impact resistance ground. The fabricated shock absorption and impact resistance ground comprises an overhead mechanism (1) arranged on an original ground, a moisture-proof base plate (2) arranged on the overhead mechanism and a floor surface layer (3) arranged above the moisture-proof base plate; the moisture-proof base plate comprises base plate units which are spliced with one another, and the floor surface layer comprises panel units which are spliced with one another; the overhead mechanism comprises a first overhead assembly and a second overhead assembly; and the overhead assembly comprises a leveling base, a leveling screw rod arranged on the leveling base, a base plate supporting seat arranged on the leveling screw rod, a supporting piece arranged below the base plate supporting seat and used for bearing the base plate supporting seat, a supporting spring arranged on the leveling screw rod above the base plate supporting seat in a sleeving mode and a limiting spring. The fabricated shock absorption and impact resistance ground has shock-resisting and shock-absorbing functions, facilitates pipeline laying, shortens the construction period and has certain sound insulation performance.

The invention provides a tail door hinge mounting structure which comprises a mounting box, a nut plate and a nut plate cover plate, wherein the top end of the mounting box is opened; the mounting box is fixedly connected with an automobile body; a bottom plate of the mounting box is provided with a first mounting hole; the nut plate is positioned between the bottom plate and the nut plate cover plate; the nut plate cover plate is fixedly connected with the mounting box; the nut plate is provided with a thread hole; the nut plate cover plate is provided with a second mounting hole; the first mounting hole, the thread hole and the second mounting hole are communicated with one another; the thread hole is smaller than the first mounting hole and the second mounting hole; the nut plate or the bottom plate adopts a limiting structure; and an interval is formed between the limiting structure and the edge of the nut plate. The tail door hinge mounting structure has high strength of the integral structure, and good adjustability.

The invention provides a puncture electricity-taking device and electric equipment equipped with the same. The puncture electricity-taking device includes a puncture electricity-taking piece (1) which is suitable for being electrically connected with electric equipment and has at least one tooth (2), and the teeth (2) can penetrate through an insulating jacket of a power transmission line (3) to be in contact with and electrically connected with the power transmission line (3), thereby supplying power to the electric equipment. The puncture electricity-taking device provided by the invention can stably provide high-power electric energy for the electric equipment for a long time, is rapid and convenient to install, and in addition, can realize live-line installation, and power supply is not influenced during installation.

A coaxial input-output variable torque differential drive device comprises a motor subassembly, a torque converter subassembly and a differential subassembly. The motor subassembly comprises a rotor shaft milled with a rotor shaft output end tooth at the front end. The torque converter subassembly comprises a variable speed gear, the variable speed gear is provided on the housing of the differential subassembly, the rear end of a dead axle star wheel bracket is provided on a rear end cover portion of a torque converter housing, one end of a variable speed duplex star wheel axle is inserted into the rear end cover portion, the other end of the variable speed duplex star wheel axle is inserted into the front end of the dead axle star wheel bracket, the output A end of the differential subassembly is inserted into the front end of the dead axlestar wheel bracket, the output B end of the differential subassembly is provided on a torque converter end cover, a variable speed duplex star wheel is provided on the variable speed duplex star wheel axle, the rotor shaft output end tooth is in transmission connection with the variable speed gear through the variable speed duplex star wheel, a motor rear end cover is of an inward concave structure, a rotary transformer sleeves on the position, corresponding to the concave structure, of the rotor shaft, a rotary transformer seal end cover is provided on the outer side of the motor rear end cover, and the variable speed gear is provided with a variable speed gear oil-throw off hole. The coaxial input-output variable torque differential drive device is applicable to vehicles.

The invention relates to the field of four-way pipe joints, in particular to a pressure reminding four-way pipe joint. The pressure reminding four-way pipe joint comprises a fixed shell, wherein the front surface of the fixed shell is fixedly connected with a pressure detection device, the upper end, the lower end and two sides of the fixed shell are all fixedly connected with connecting pipes, the connecting pipes all communicate with the fixed shell, the middle of the outer side wall of each connecting pipe is fixedly connected with a fixing ring, the upper end and the lower end of each fixing ring are both fixedly connected with fixing mechanisms, a first external thread is arranged on one side, far away from the fixed shell, of the outer side wall of each connecting pipe, a connectingmechanism is arranged on one side, far away from the fixed shell, of the outer side wall of each connecting pipe in a sleeving mode, and pipelines are in threaded connection on the connecting mechanisms. The pressure detection device is arranged on the fixed shell, when the pressure detection device is used, a pressure gauge of the pressure detection device can detect the pressure inside the fixedshell, when a controller detects that the pressure inside the fixed shell is too large through the pressure gauge, an alarm lamp can be started to warn workers, and the phenomenon of pipeline damageor leakage is avoided.

A novel subway vibration reduction track structure and a vibration absorber device are disclosed. The novel subway vibration reduction track structure comprises a pouring type shield tunnel foundation, a track plate is arranged above the shield tunnel foundation, two steel rails which are oppositely arranged are arranged on the track plate, a plurality of rectangular openings used for vibration reduction installation are formed in the inner bottom of the shield tunnel foundation, and foundation seats are arranged in the rectangular openings. The foundation seats are connected with an upper disc through a main vibration reduction assembly, and the upper disc is connected with the bottom of the track plate through a locking piece. The prefabricated track plate is placed on the foundation, the main vibration reduction equipment is installed in the gap between the foundation and the track plate through the multiple assembling openings formed in the track plate, and by adjusting a nut ring, vibration absorption springs in the main vibration reduction equipment and the magnetic layers which are arranged in the main vibration reduction equipment and repel each other in magnetism achieve the effect of effectively counteracting the vibration force of the track plate and the foundation generated during vibration; the effective installation of the vibration absorber can be ensured while the installation of the track plate is not influenced.

The invention discloses a smart support for a solar water heater. The smart support comprises a supporting mechanism, a telescopic mechanism, a shielding mechanism and a control structure. The supporting mechanism comprises a pair of oppositely-arranged supporting pieces. First supporting columns are provided with step-like sliding ways. The telescopic mechanism comprises a first telescopic piece and a right-square-bracket second telescopic piece, a third telescopic piece and a fourth telescopic piece, wherein the middle of the third telescopic piece and the middle of the fourth telescopic piece are connected in a sliding manner. The shielding mechanism comprises multiple semicircular bottom plates and arc collection plates. The control structure comprises a solar photovoltaic panel and a controller. The controller is set in the manner that when the temperature drop in a water tank exceeds 5 DEG C, the controller drives the two arc collection plates to rotate to the position above solar heat collecting tubes. By means of the smart support, the heat collecting tubes are protected under the severe weather as well as the low-temperature weather, and the solar utilization efficiency of solar energy is improved. The smart support has the beneficial effects of being simple in structure, low in production cost, high in bearing strength and the like.

The invention discloses a high-strength straight gear and a manufacturing method thereof. The high-strength straight gear comprises a gear ring and a gear hub, wherein the gear hub is arranged in thegear ring and provided with a fixing mechanism, the gear ring is provided with a fixing groove, the fixing mechanism is clamped in the fixing groove, the gear hub is provided with a positioning protruding part, the gear ring is provided with a positioning groove, and the positioning protruding part is arranged in the positioning groove; and the method adopts five steps of a, part manufacturing, b,fixing mechanism assembling, c, gear ring machining, d, gear assembling, and e, gear detection. According to the gear and the method, replacement time of the gear ring can be saved, the gear ring isconvenient to replace, the installation precision of the gear is ensured, slipping between the gear ring and the gear hub is avoided, and the reliability of the gear in the working process is ensured;and by means of the method, gear manufacturing can be facilitated, the gear quality is improved, time needed for gear manufacturing is saved, the production efficiency is improved, and the gear strength is ensured.

The invention belongs to the technical field of building and bridge equipment, and relates to a replacement structure of a shock insulation support, which comprises a shock insulation support body, wherein the shock insulation support body comprises a rubber column, an upper connecting plate fixedly connected to the upper end of the rubber column, and a lower connecting plate fixedly connected tothe lower end of the rubber column; a plurality of connecting locking pieces are evenly distributed on the outer side of the circumferential surface of the rubber column in a circumferential shape; the upper end of each connecting locking piece is connected with the upper connecting plate in a fastened mode; and the lower end of each connecting locking piece is connected with the lower connectingplate in a fastened mode. By means of the replacement structure, the problem that the vertical height is insufficient when the shock insulation support is replaced can be effectively solved, and the shock insulation layer does not need to be synchronously jacked out of the installation space to install a new shock insulation support.

The invention discloses a middle driving mechanism. The mechanism is used for a power-assisted bicycle and comprises a middle shaft, a chain wheel and a motor; the middle shaft is inserted into a shaft hole of a middle frame of the power-assisted bicycle; an auxiliary gear sleeves the middle shaft in a fixed manner; the chain wheel comprises an installation part located in the center and a tooth part fixed to the periphery of the installation part; the installation part protrudes in an axial direction and forms a containing cavity; the tooth part is located at the end, close to the frame, of the installation part in an axial direction; the installation part sleeves the middle shaft and is fixedly connected with the auxiliary gear; the auxiliary gear is positioned in the containing cavity;and the motor is assembled on the frame and drives the auxiliary gear to rotate through a speed reduction assembly. In the middle driving mechanism, the tooth part in the chain wheel achieves the effect of crossing the auxiliary gear to be close to the frame, so that the distance between the tooth part and the frame is effectively shortened, and therefore, the distance between a chain and the frame will not be too long. The invention further discloses a power-assisted bicycle. The power-assisted bicycle is provided with the middle driving mechanism, so that the distance between the chain and the frame will not be too long.