134results about How to "Simple structural assembly" patented technology

A wall mount to mount a display apparatus proximate a wall is disclosed. The wall mount may include a base to be attached to the wall; a supporting bracket supported by the base; a rotating bracket tiltably coupled with the supporting bracket, and on which the display apparatus is mounted; an elastic member coupled with the supporting bracket; and a supporting wire connected to the electric member and the rotating member. The elastic member may expand or contract relative to a movement of the rotating bracket. Thus the present invention provides simplifies the assembly and enhances the usability of the wall mount as well as provides an easily adjustable tilt angle of the wall mount.

The invention discloses a thyristor valve block of a static var compensator (SVC), which comprises one group or more than one group of mutually-tandem anti-parallel thyristor unit modules, resistance-capacitance protection unit modules, plate unit modules, frames and insulators, wherein the anti-parallel thyristor unit modules, the resistance-capacitance protection unit modules and the plate unitmodules are fixed on the frames; each resistance-capacitance protection unit module comprises a capacitor and a resistor; the insulators are fixed on the frames; the insulators are used for supporting and fixing the frame of the thyristor valve block; and each anti-parallel thyristor unit module comprises a thyristor and a profile self-heat dissipation structure, wherein the thyristor and the profile self-heat dissipation structure are pressed and combined together, and the heat dissipation of the thyristor is realized by heat conduction and convection. The thyristor valve block described by the implementation mode in the invention has the advantages of small volume, simple structure assembly and few hidden troubles and is easy to detect and maintain, the valve block can determine the tandem quantity according to the actual capacity conditions of users, and the self-heat dissipation mode is especially suitable for the SVC with medium or small capacity.

The invention provides a vertical air conditioner indoor unit. The vertical air conditioner indoor unit comprises a shell, an air duct, a flow guide part and an air inducing channel; the shell is provided with an air supply opening, a first air inlet and a second air inlet; the inner wall, close to an air outlet, of the air duct is in a gradually-shrinking shape with a flow cross section graduallybecoming smaller in the airflow direction; the flow guide part is arranged in the air duct, an annular air outlet gap is defined by the flow guide part and a gradually-reduced part of the air duct, and the flow guide part is used for guiding airflow to the annular air outlet gap so that the airflow can be gradually gathered towards the center of the airflow under the guidance of the inner wall ofthe air duct and flow out of the air outlet and the air supply opening; and the air inducing channel is formed between the shell and the air duct and is provided with an inlet end communicated with the second air inlet and an outlet end communicated with the air supply opening, and indoor air enters the shell through the second air inlet and is guided to the air supply opening through the air inducing channel. The vertical air conditioner indoor unit is stronger in wind power and farther in air supply distance.

The invention provides a structure of an optical transceiver module. The structure comprises a cushion block, wherein a pure electricity portion and a photoelectricity portion are borne by the cushion block in a neighboring mode, the pure electricity portion and the photoelectricity portion are independent from each other and electrically connected with each other, the photoelectricity portion comprises a carrier piece, the carrier piece is installed on the cushion block in a sidewise mode, metal wires are arranged on the other side and the top surface of the cushion block, a photovoltaic conversion chip is installed on the top surface of the carrier piece with the bottom upward and electrically connected with the metal wires, one or more transverse through holes are formed in the carrier piece, one or more optical fibers are transversely inserted into the through holes of the carrier piece respectively, the photovoltaic conversion chip is provided with one ore more working units, and the active areas of the working units on the front side of the photovoltaic conversion chip are aligned with the optical fibers in the through holes one to one. The pure electricity portion comprises a base plate installed on the cushion block, and an electric chip is installed on the portion, close to the photoelectricity portion, of the edge of the pure electricity portion, and connected with the metal wire on the side face of the carrier piece through a metal bonding wire. According to the structure of the optical transceiver module, the purpose that in the optical transceiver module, the direction of the optical fibers is parallel to the plane of a circuit board is achieved.

The invention discloses an intelligent robot capable of restoring a magic cube quickly and a control method of the robot. The intelligent robot comprises an execution module, a control cabinet, a power supply, a drive panel and a controller, wherein the execution module comprises a supporting framework, a plurality of manipulators and fixing frames; each manipulator comprises a stepping motor and a rotary gripper part; the fixing frames are arranged above the control cabinet, the fixing frames comprise a large fixing frame and a plurality of small fixing frames arranged on the outer surface of the large fixing frame; the supporting framework is arranged in the large fixing frame; the insides of the small fixing frames are used for holding the stepping motors; multiple fixing blocks are uniformly arranged at each rotary gripper part, and a plurality of holes are formed in the surface of the to-be-restored magic cube and matched with the fixing blocks; the power supply, the drive panel and the controller are all arranged in the control cabinet. The intelligent robot capable of restoring the magic cube quickly has a high restoration speed and is low in cost, convenient to operate and stable and firm in structure.

The invention relates to the field of medical apparatuses and instruments, in particular to a transcatheter heart valve replacement system. The transcatheter heart valve replacement system comprises a valve stent with a preset shape, and a repairing mechanism; the repairing mechanism is constructed to be located in the middle area of an autologous valve and used for clamping an autologous valve leaflet; in addition, the repairing mechanism has two forms of capturing and separating, wherein when the repairing mechanism is in the capturing form and clamps the autologous valve leaflet, the valve stent is located in the middle area of the repairing mechanism, and the valve stent is restored to be in the preset form and promotes the repairing mechanism to be detached and separated; before the valve stent replaced according to the scheme is implanted, the autologous valve can still work normally, more time is won for an operation, and complications are effectively reduced; and the valve stent can smoothly reach the middle area of the repairing mechanism along a guide inner core, positioning is accurate, operation is more convenient and faster, when the valve stent gradually expands in the radial direction to recover the preset form, the repairing mechanism is separated and surrounds the periphery of the valve stent, and implantation is completed.

The invention relates to the technical field of automobile parts, in particular to an air outlet assembly, a handrail box and a vehicle. The air outlet assembly comprises an air door seat and an air door cover rotationally connected with the air door seat. An air inlet is formed in the air door seat, and the air door cover is provided with an air outlet. The air inlet communicates with the air outlet to form an air inlet runner, the air door cover is rotated to adjust the position of the air outlet, and opening and closing of the air inlet runner are achieved. The air outlet assembly, the handrail box and the vehicle have the beneficial effects that the size is small, the structure is simple, installation and adjustment are convenient, opening and closing and the opening and closing degreeof the air inlet runner can be adjusted conveniently according to requirements.

The invention relates to an assembly method of a smoke generator, which comprises: a. fixing a first support (20) and a second support (30) on both ends of a support pipe (10); b. The support tube (10) is sleeved on an assembly rod (91) that is suitable for passing through the support tube (10); c, place the first end (63) of the heating element (60) along the second bracket (30) Insert the end from the gap between the support tube (10) and the assembly rod (91) until the first end (63) of the heating element (60) protrudes from the end of the first bracket (20) ; d, bending the two ends of the heating element (60) respectively on the positioning part to form a fixation to the heating element (60); e, sequentially placing each heating element (60) along the support tube ( 10) is fixed in a circumferential direction, so that a plurality of heating elements (60) surround the cavity (11). The assembling method of the invention has the advantages of simple and fast process, high production efficiency, low defective rate of finished products, and the like.

The invention discloses a bear and drink fresh-keeping barrel with an adjustable bear head. The bear and drink fresh-keeping barrel comprises a shell, an inner container wrapped by the shell and a gas-liquid control device, wherein the inner container is divided into an upper layer and a lower layer, and comprises an upper-layer gas storage cavity used for storing gas and a lower-layer bear storage cavity used for storing a liquid, the gas-liquid control device comprises a bear spear with a pressure reducing valve, a distributor with a bear head throttling valve and a bear outlet pipeline, thebear spear penetrates through the gas storage cavity and the bear storage cavity in a matched mode, the top end of the bear spear is connected with the distributor in a matched mode, the distributoris connected with the bear outlet pipeline in a matched mode, the bear spear penetrates through a gas channel between the gas storage cavity and the bear storage cavity, the bear spear, the distributor and the bear outlet pipeline penetrate through a liquid path pipeline from the bear storage cavity to the exterior, and the distributor with the bear head throttling valve can control and adjust theliquid flow in the bear discharging process. According to the bear and drink fresh-keeping barrel, the function that the bear outlet flow can be adjusted is achieved, moreover, the bear spear is provided with the pressure reducing valve, and then a gas pipe and a separate pressure reducing valve are not required to be connected with the bear spear and the gas storage cavity in series.

The invention discloses a temporary support device for a frame-type steel-structure combined oblique stand column and a construction method. The device comprises rails (1) fixed to oblique stand column single body (2), and a trolley (3) is arranged on the rails (1); the oblique stand column monomers (2) are hinged to oblique support rods (4); the trolley (3) is provided with an electromotor (6) connected with a worm (17), a frame is provided with a worm gear (18) matched with the worm (17), and a support sleeve (19) is fixed to the worm gear (18); the side of the frame is slidably matched with a connecting plate (8) which is in threaded connection with the rails (1). The method is characterized by comprising the steps that the trolley (3) is pushed to get close to the oblique stand column monomers (2) to enable stress clamping rings (5) arranged on the lower portions of the oblique support rods (4) to abut against an opening of the support sleeve (19) of the trolley (3), and then the trolley (3) is in threaded connection with the rails (1). According to the device and method, assembly and disassembly are both convenient to operate, and the labor intensity can be effectively reduced.

The invention discloses a flange punching die which comprises a die shank (1), an upper die plate (2), a fixing plate (3), guide posts (5), male punching dies (6), a lower die plate (7), a female die (8) and a stripper plate (9). The die shank (1) is mounted on the upper die plate (2). The fixing plate (3) is mounted under the upper die plate (2). The guide posts (5) are mounted between the fixing plate (3) and the stripper plate (9). The female die (8) is mounted on the lower die plate (7). The stripper plate (9) is mounted on the female die (8). The male punching dies (6) are arranged between the fixing plate (3) and the lower die plate (7). The flange punching die is simple and precise in structure assembly and has a long service life. The flange punching die is convenient to operate and accurate in positioning in the use process; therefore, the labor intensity is reduced, and the production efficiency is improved.

The invention discloses an electromagnetic clutch water pump with dual friction disks. The electromagnetic clutch water pump comprises a main shaft penetrating a pump body. The main shaft stretches out of the two ends of the pump body, an impeller is fixed to one end of the main shaft, and the other end of the main shaft is sequentially sleeved with a belt wheel suction disk and a metal friction disk. An electromagnetic coil assembly is arranged in the belt wheel suction disk, and the metal friction disk and the belt wheel suction disk are oppositely arranged in a clearance manner. The electromagnetic clutch water pump is characterized in that a plane spring and a metal magnetic conductive disk are sequentially fixed on the face, back on to the belt wheel suction disk, of the metal friction disk through screws in a penetrating manner, and the plane spring and the belt wheel suction disk are fixed; a permanent magnet and a non-metal friction disk are sequentially fixed on the face, backon to the plane spring, of the metal magnetic conductive disk; an induction drive disk opposite to the non-metal friction disk is further fixed to the main shaft, and a metal magnetizer cooperating with the permanent magnet to generate eddy currents is buried in the induction drive disk; and when the electromagnetic coil assembly is powered, the attraction force F of the electromagnetic coil assembly and the metal friction disk is larger than the attraction force f of the permanent magnet and the metal magnetizer. The torque transmission force of an inner power transmission structure of the water pump is higher, and work stability and reliability are higher.

The invention provides an integrated pole, a top cover assembly, a battery and a battery module, the integrated pole comprises a first welding ring, the inner side of the first welding ring is provided with a sealing ring, the sealing ring sleeves the periphery of the pole, the periphery of the first welding ring, the periphery of the sealing ring and the periphery of the pole are sleeved with injection molding parts, and the injection molding parts are connected with the top cover assembly. The first welding ring, the sealing ring and the pole are fixed into a whole by the injection molding part, and the first welding ring is welded on the second welding ring to form an integrated structure. According to the integrated pole provided by the invention, the structure of the pole and the assembly of the top cover assembly are simplified at the same time, the assembly efficiency is improved, and the manufacturing cost is reduced; and the integrated pole is integrally assembled outside the top cover plate, so that the space utilization rate in the shell is higher, and the energy density of the battery is effectively improved. In addition, the integrated pole provided by the invention is thinner, the weight of a battery cover plate is reduced, and the energy density of the battery is further improved.

The invention discloses a punching die for a terminal block. The punching die comprises a die shank, an upper die plate, fixing plates, first convex dies, a concave die, a lower die plate, a material unloading plate, second convex dies and guide columns, wherein the die shank is arranged on the upper die plate, the fixing plates are arranged at the bottom end of the upper die plate, the concave die is arranged on the lower die plate, the material unloading plate is arranged on the concave die, and the first convex dies, the second convex dies and the guide columns are arranged between the upper die plate and the material unloading plate. The punching die for the terminal block has the advantages that the structure assembly is simple and precise, and the service life is long; the operation is convenient in the use process, and the positioning is accurate, so the labor strength is reduced, and the production efficiency is improved.

The invention relates to a smoke generator assembling method. The smoke generator assembling method comprises the following steps: a, a first support (20) and a second support (30) are fixed to the two ends of a support tube (10); b, the support tube (10) obtained in the step a sleeves an assembly rod (91) suitable for penetrating the support tube (10); c, first ends (63) of heaters (60) are inserted into a clearance between the support tube (10) and the assembly rod (91) along the second support (30) end till the first ends (63) of the heaters (60) extends out from the first support (20) end; d, both ends of the heaters (60) are respectively bent on locating parts, so that the heaters (60) are fixed; and 6, all the heaters (60) are sequentially fixed in the circumferential direction of the support tube (10), so that a cavity (11) is defined by the heaters (60).The smoke generator assembling method has the advantages of simple and quick process, high production efficiency, low defective rate of end products and the like.

The invention relates to a mechanical disc brake device which comprises a shell, a brake power supplying device, a brake transmission mechanism and a brake executing mechanism. A chamber for containing the brake executing mechanism is formed in the shell, the brake executing mechanism comprises a disc brake plate, a first brake block, a second brake block, a reset piece and a brake block fixing piece, and the first brake block and the second brake block are fixed in the chamber through the brake block fixing piece, and closely attached to the two side walls of the chamber through the reset piece. The disc brake plate is arranged between the two brake blocks, and a through groove perpendicular to the disc brake plate is formed in the shell. The brake transmission mechanism comprises a push assembly and a swing arm, the push assembly is circumferentially limited in the through groove, and comprises a driving piece and a matched piece matched with the driving piece, the swing piece is connected to the swing arm, and the matched piece is in contact with the second brake block. The mechanical disc brake device is easy to assemble, easy and convenient to operate and low in cost, and later maintenance is convenient.

The invention discloses a refrigerator air way structure. A base refrigeration intake groove, a base refrigeration air return way, a base temperature change intake groove and a base temperature changeair return way are arranged on an air way base; the air way base is provided with an intake way upper cover and an intake way lower cover; the intake way upper cover is provided with an upper cover refrigeration intake groove and an upper cover temperature change intake groove; the intake way lower cover is provided with a lower cover refrigeration intake groove and a lower cover temperature change intake groove; an air door module is arranged between the intake way upper cover and the intake way lower cover; corresponding air doors of the air door module are used for controlling opening andclosing of the corresponding refrigeration intake ways and temperature change intake ways; and the intake way upper covers, the intake way lower covers and the air door module are arranged on the airway base to form an integral structure. Through cooperation between foamed foams and a refrigerator liner, the refrigerator air way structure has the characteristics of simple structure assembly, convenience to install, easy sealing and the like, solves the problems of difficult installation and difficult sealing in the prior art, and improves the air way installation efficiency and the sealing effect.

The invention discloses a shoe sole air cushion device. The shoe sole air cushion device comprises an air cushion bag which is arranged in a shoe sole, and an elastomer of which the interior forms elastic buffer, an air throttle pipe is combined with a nozzle which is communicated with the inside and the outside and is provided with a valve ball, a suction inlet and a small-diameter outlet, the suction inlet and the small-diameter outlet are formed in the two ends, multiple stop blocks protrude on the inner wall of the suction inlet annularly, the small-diameter outlet is internally provided with a shrinking neck part and multiple lugs which protrude on the shrinking neck part annularly, the valve ball forms small-airflow gaps with the shrinking neck part when the nozzle of the air cushionnag exhausts air to slow down exhaust, forms large-airflow gaps with the inner wall of the suction inlet when the nozzle of the air cushion bag sucks air to quickly suck air for air inflation, and has elastic buffer of the elastomer, the air throttle pipe has the auxiliary buffering effect of slowing down of exhaust and quickly sucking air for air inflation, and the overall buffering effect of the shoe sole is effectively improved.

The invention relates to a part sliding guiding device with a detection function. The part sliding guiding device comprises a conveying channel, a sliding guiding plate, a gravity detection unit and a sorting unit. The sliding guiding plate is arranged on the side of the conveying channel. The gravity detection unit is arranged on the conveying channel and is located at the position of an inlet of the sliding guiding plate. The sorting unit is arranged on the opposite side of the sliding guiding plate. The gravity detection unit and the sorting unit are connected through a controller. The sorting unit is provided with a pushing and blocking part. Parts detected to be qualified through the gravity detection unit are pushed to the sliding guiding plate and fall into a circulation box below the sliding guiding plate. By means of the part sliding guiding device, automatic sorting is achieved, complex operation processes such as manual carrying and taking and the like are avoided, and the automation degree is high; whether a product is qualified or not is detected by detecting the quality of the parts through the gravity detection unit, the detection efficiency is improved, and detection is accurate; and the sliding guiding plate is obliquely arranged so that the parts can slide automatically, a certain buffering effect is achieved, and damage of the parts is avoided.

The invention relates to the field of I / O interface plug devices, and particularly relates to an anti-scratch I / O interface plug device and a jig. The plug device comprises a reset mechanism, a sliding mechanism, a drive mechanism and a floating guide mechanism for installing a plug, wherein the floating guide mechanism is installed on the sliding mechanism in a sliding manner, the drive mechanismis connected with the sliding mechanism and drives the floating guide mechanism to move and contact a to-be-tested I / O interface, the floating guide mechanism slides along the sliding mechanism underforce, and beats a regulating position in sliding so as to align the plug with the to-be-tested I / O interface, the reset mechanism installed on the sliding mechanism resets to push the floating guidemechanism to move to plug the plug into the to-be-tested I / O interface. The anti-scratch I / O interface plug device has the beneficial effects that the floating guide mechanism enables the plug to float and beat within a certain range so as to align with the to-be-tested I / O interface, the product is prevented from scratching or damaging, plugging and alignment are easier, the requirement on product positioning is lowered, and the device can be used in more areas and is easier and more convenient to operate.

The invention discloses a punching die for a terminal box. The punching die comprises a die shank, an upper die plate, a fixing plate, a guide column, a concave die, a concave die cushion, a support plate, a lower die plate and a convex die, wherein the die shank is arranged on the upper die plate, the fixing plate is arranged at the lower end of the upper die plate, the guide column and the convex die are arranged between the upper die plate and the concave die, the support plate is arranged on the lower die plate, and the concave die is arranged on the support plate by the concave die cushion. The punching die for the terminal box has the advantages that the structure assembly is simple and precise, and the service life is long; the operation is convenient in the use process, and the positioning is accurate, so the labor strength is reduced, the production efficiency is improved, and the quality is ensured.

The invention discloses a pneumatic adjustment cutter rod structure of an underwater granulator. The structure comprises a cutter rod assembly, a connecting flange and a pneumatic adjustment structure; a bearing base of the cutter rod assembly is connected with a water cavity of the underwater granulator through the connecting flange; the back end of a cutter rod is mounted in the bearing base, and is connected with an output shaft of an alternating-current motor; the middle part of the cutter rod penetrates through the connecting flange; a front end oil seal and a back end oil seal are arranged between the connecting flange and the cutter rod at intervals; an intake port is formed between the front end oil seal and the back end oil seal, and is connected with an air source of compressed air through the pneumatic adjustment structure; an intake hole is formed in the cutter rod opposite to the intake port; the front end of the cutter rod extends into the water cavity; a plunger slide hole is formed in the front end of the cutter rod, and communicates with the intake hole through a ventilation hole; a pneumatic plunger is arranged in the plunger slide hole, and is connected with a cutter base through a compression spring; the cutter base is provided with a cutter head shaft; and the cutter head shaft is connected with a cutter disc. The structure can guarantee tightness between acutter and a hot-cut mold surface, improves the granulation quality, and reduces wear of the cutter.

The invention discloses a simple cutting device convenient for a building heat-insulating plate. A foundation base is fixedly provided with a gas cutting bracket in a welding manner. The top end of the gas cutting bracket is fixedly provided with two groups of stamping cylinders. The bottom ends of two groups of the stamping cylinders are fixedly connected with a horizontally installed clamping plate. The clamping plate is provided with a punching cutter plate through locking by a fixing bolt. A guide roller is installed below the punching cutter plate. The guide roller is positioned and installed in an installing groove which is installed on the foundation base. The left and right sides of the guide roller are provided with a correction guide roller. The correction guide roller is installed in an inner groove of a U-shaped plate. The top end of the U-shaped plate is fixedly provided with a padding block. The padding block is vertically and fixedly connected with a pin rod in a weldingmanner. The pin rod is fixedly inserted and installed at one end of a connecting block. The other end of the connecting block is equipped and provided with a compression bolt. The bottom end of the compression bolt is fixedly connected with a pressing block. The technical scheme is used, so the simple cutting device is simple in structure, simple in structural assembly, lower in manufacturing cost, convenient to operate and use, and beneficial to improve the cutting efficiency.

The invention provides an ejector mechanism for demoulding in the production of automobile front bumpers. The mechanism includes a large ejector, a small ejector, a fixed seat, a spring, a first screw, a second screw, a third screw, a cover plate, an ejector plate and a movable mold baseplate. The small ejector is mounted at one end of the large ejector, the large ejector passes through the ejector plate, and the other end is located in the ejector plate and is limited by a limiting step on the ejector plate; the first screw penetrates through the fixed seat and is fixedly connected with the end, located in the ejector plate, of the large ejector; the fixed seat is fixed on the movable mold baseplate by the second screw; the spring is located in the fixed seat, one end of the spring contacts with the nut of the first screw, and the other end of the spring is pressed by the cover plate; and the cover plate is fixedly connected to the movable mold baseplate by the third screw. The ejector mechanism provided by the invention can be pushed out by the spring force during demoulding to complete the demoulding of the product, and is simple for assembling and convenient for repair.

The invention relates to a closure device for a pressure reservoir (14) of a gas-refrigeration generator (11), which pressure reservoir can be filled with a compressed gas. The valve body (21) is arranged so as to be displaceable inside a valve box (18). The valve body (21) has an effective compressive surface facing the main chamber (15) and an effective compressive surface facing the prechamber (52), both surfaces having identical size and being impingeable with the filling pressure of the main chamber (15). The valve body (21) is retained in a closed position by an outer effective compressive surface (64) which is subject to an atmospheric pressure in the direction of closure and by an energy storing element (47).

The invention discloses a contact pin terminal for press-fit connection, comprising an installation butt-joint part (11) and a press-fit part (10), wherein the press-fit part (10) comprises a guiding part (101) and a holding part (102) matched with a circuit board open pore (3), two sides of the holding part (102) are respectively provided with a groove (1023) extending along the axial direction of the holding part (102), the bottoms of the grooves (1023) incline, a thin-wall type intermediate oblique beam (1022) with gradient is formed between the two grooves (1023) which are symmetrically distributed relative to the intermediate oblique beam (1022), and the two grooves (1023) form four side walls (1021), which can deform along the edge of the circuit board open pore (3) during press fit and are tightly appressed to the inner wall of the open pore (3). The contact pin terminal has a simple structure, is durable, reliable, resistant to shocks and impacts, and convenient and rapid for press fit; and in addition, the contact pin terminal is formed with a machining method and has the advantages of strong current bearing capacity, high mechanical strength, wide adaptation rang, and ideal press-fit force and holding power, and the materials can be selected flexibly.

The invention discloses a flange expanding die which comprises an upper die plate (1), expanding female dies (3), flanging female dies (4), guide posts (5), a lower die plate (6), fixing plates (7) and an expanding male die (8), wherein the guide posts (5) are mounted between the upper die plate (1) and the lower die plate (6); the fixing plates (7) and the expanding male die (8) are mounted on the lower die plate (6); the expanding male die (8) is mounted between the fixing plates (7); the flanging female dies (4) are mounted on the fixing plates (7) respectively; and the expanding female dies (3) are mounted at the lower end of the upper die plate (1). The flange expanding die is simple in structure and assembly, precise, long in service life, convenient to operate in the using process and accurate in positioning, so that the labor intensity is reduced and the production efficiency is improved.

The invention discloses a motorcycle-chain protecting clamp and an installing structure thereof. The chain protecting clamp is of a U-shaped structure with a front closed end, and the front end of the chain protecting clamp is provided with a positioning hole. The installing structure is characterized in that the chain protecting clamp is clamped on a motorcycle flat fork which comprises a flat-fork edge pipe and a flat-fork cross pipe; and the arc shape of the front end of the chain protecting clamp is sheathed at the front end of the flat-fork edge pipe in a positioning manner, the middle part of the chain protecting clamp is positioned at the side surface of the flat-fork edge pipe, and the rear end of the chain protecting clamp is positioned at the flat-fork cross pipe. The invention has the advantages that the motorcycle-chain protecting clamp is designed to be installed with the flat fork, and three-point positioning can be realized, so that the defects of improper positioning, assembling deformation and incapability of good matching with the chain in the prior art are avoided, easy structural assembly and accurate positioning are realized, the length of the motorcycle-chain protecting clamp can be effectively shortened, and the cost is reduced.

The invention provides a large-section multi-cabin cast-in-place comprehensive pipe gallery top plate formwork construction system and a construction method of a large-section multi-cabin cast-in-place comprehensive pipe gallery top plate formwork system. The large-section multi-cabin cast-in-place comprehensive pipe gallery top plate formwork construction system mainly comprises a movable top plate construction platform, movable top plate steel bar binding bed jigs, a top plate formwork erecting system and a top plate steel bar cage shaping support; adjustable opposite-jacking supporting rodsare erected on the upper portions of the adjacent pipe gallery side walls, a scaffold is erected on the foundation of the adjustable opposite-jacking supporting rods, and a pipe gallery top plate bottom mold is installed at the tops of the scaffold; the movable top plate steel bar binding bed jigs are symmetrically arranged on the two sides of the comprehensive pipe gallery, pipe gallery top plate steel bar binding construction is conducted through the movable top plate steel bar binding bed jigs, and a pipe gallery top plate steel bar cage is supported on the top face of the pipe gallery side walls through the shaping support; and top plate side molds are installed on the upper portions of the outer walls of the two ends of the pipe gallery outer side wall through opposite-pull screws, and top plate steel bar auxiliary operation and concrete pouring construction are conducted through the movable top plate construction platform. The large-section multi-cabin cast-in-place comprehensive pipe gallery top plate formwork system is easy to install, large in construction operation space, high in efficiency and good in benefit.