394results about How to "Guaranteed connection reliability" patented technology

The utility model relates to a separating type vacuum fresh-keeping machine convenient to operate, which comprises a seat body, a cover body and a hand-held machine, the cover body is connected to the seat body in a turnover mode, a sealing cavity is formed when the seat body and the cover body are mutually closed, the hand-held machine is provided with a vacuumizing mechanism for extracting air, an air extraction pipeline communicated with the sealing cavity and the vacuumizing mechanism is arranged in the seat body, and the sealing cavity is communicated with the vacuumizing mechanism through the air extraction pipeline. One side of the seat body is provided with a mounting groove used for assembling the handset, and the mounting groove is provided with an overturning cover structure which covers and fixes the handset and uncovers and lifts the handset. According to the utility model, a separated mechanism design is adopted, the vacuumizing mechanism is arranged in the handset, the handset can be used independently and can also be used together with the seat body, meanwhile, the handset can be quickly and conveniently taken or placed in the mounting groove through the overturning cover structure, the operation is simple and convenient, and the assembly is stable and reliable.

The utility model discloses an anti-retreating terminal assembly, which comprises a shell and a terminal inserted in the shell, the terminal is inserted in a slot built in the shell, the inner wall of the shell is provided with a limiting groove communicated with the slot, a limiting elastic sheet is inserted in the limiting groove, and the limiting elastic sheet is inserted in the limiting groove. The limiting elastic sheet is provided with a first elastic fin which obliquely extends towards the slot, the front end of the first elastic fin is bent to form a first bent part, the terminal is provided with a bayonet, when the terminal is inserted into the slot, the first bent part is clamped in the bayonet, and the first bent part is clamped in the bayonet. Therefore, the resistance for preventing the terminal from returning is formed on the terminal. According to the scheme, the first elastic fins extending inwards in the inclined mode through the limiting elastic pieces are clamped with the terminals after the terminals are inserted, component force perpendicular to the insertion direction of the terminals is generated on the terminals, then the positions of the terminals are limited, the purpose of preventing the terminals from retreating to generate position deviation is achieved, and then the connection reliability of the terminals in the using process is guaranteed.

The invention relates to a key structure, a connector and an endoscope system.The key structure comprises a shell, a key, an elastic arm and a connecting arm, an installation cavity is formed in the shell, a key hole communicated with the installation cavity is formed in the shell, a connecting column is arranged on the side wall of the installation cavity in a protruding mode, and the key is movably installed in the installation cavity; one end of the key can penetrate out of the mounting cavity through the key hole to form a driving end, one end of the elastic arm is connected with the end, away from the driving end, of the key, the connecting arm is connected with the end, away from the key, of the elastic arm, and a connecting hole is formed in the connecting arm and used for being in interference fit with the connecting column. At least one receding groove is formed in the edge of the connecting hole, and each receding groove is communicated with the connecting hole. The key structure in the application can effectively avoid the situation that the key is stuck and cannot be reset in the use process.

The invention provides a large-span steel corridor structure high-precision assembling method, and belongs to the technical field of building construction, and the method comprises the step of constructing an accurate and reliable structure assembling technical system through deep fusion of a building information model and a three-dimensional space coordinate system. According to the method, a laser positioning instrument and a multi-stage torque sensor are introduced for the first time, and accurate positioning of the steel member and fine control of bolt torque are achieved. From a pre-assembly site, component installation is conducted layer by layer through an axis control net and an angular point control net, and a staged bolt fastening strategy is adopted and comprises initial tightening torque control, semi-tightening torque control and final tightening torque control. In the assembling process, finite element analysis software is used for conducting multiple times of structure checking calculation, the space position error and the structure stability are strictly monitored, and the geometric accuracy, the connection reliability and the overall performance of the large-span steel corridor structure are ensured. According to the method, the problem that large accumulative errors are inevitably caused by the fact that manual measurement and mechanical limiting modes are generally adopted for positioning and connection at present is solved.

The utility model discloses a composite pipeline which comprises a plurality of sections of composite pipe bodies and connecting pieces for fixedly connecting every two adjacent sections of composite pipe bodies, and the composite pipe bodies are made of glass fiber reinforced composite materials. The composite pipeline can be used for compressed air energy storage, through the structural design, connection of the composite pipeline can guarantee the strength and sealing performance of the composite pipeline, and the connection efficiency can be improved.

The utility model discloses a plastic pneumatic diaphragm valve which comprises an upper cover, a lower shell and a valve body, and the lower shell is fixedly arranged on the valve body and fixedly connected with the upper cover through a first clamping assembly. Axial limiting can be achieved through relative rotation during assembly, on one hand, overall assembly of the device is facilitated, spring elasticity borne by the piston can be overcome during assembly and disassembly of the device and the piston, the risk that the upper cover bounces open is avoided, and when a flow channel of the valve body is controlled to be opened and closed, the indicator can adjust the relative position to the upper cover along with movement of the piston, and the safety of the device is improved. And the working condition of the diaphragm piece can be judged by observing the length of the indicator extending out of the upper cover, so that an operator can more accurately and intuitively control the opening and closing states of the valve body.

The utility model provides an encoder mounting structure and a wind generating set. And the encoder mounting structure is used for connecting the rotary encoder and the variable-pitch motor. The encoder mounting structure comprises an outer fixing sleeve and an inner fixing sleeve, the outer fixing sleeve is sleeved on the periphery of the inner fixing sleeve, and the inner fixing sleeve is sleeved on the periphery of the rotating shaft. A counter bore is formed in a rotating shaft of the rotary encoder in the axial direction, a rotating shaft of the variable-pitch motor is embedded in the counter bore, and the rotating shaft is fixedly connected with the counter bore. The variable pitch motor is provided with a brake, two ends of the outer fixing sleeve are respectively connected to the brake and the rotary encoder, a brake end face of the brake is provided with a positioning groove, one end, facing the brake end face, of the outer fixing sleeve is provided with a positioning bulge, and the positioning bulge is clamped in the positioning groove. According to the encoder mounting structure, the rotary encoder is connected with the variable pitch motor, and the joint of the main shaft and the rotary shaft has high connection stability in the axial direction and the radial direction of the main shaft.

The utility model discloses a data acquisition instrument based on cellular communication, and belongs to the technical field of data acquisition instruments, the data acquisition instrument comprises an acquisition instrument body, one side of the acquisition instrument body is provided with a plurality of interfaces, the acquisition instrument body is provided with a protection cover, and one side of the protection cover is open; a check curtain is installed in the protective cover, a cover plate is installed at an opening of the protective cover, a sealing piece is arranged on the cover plate, and the cover plate is detachably connected with the check curtain. According to the utility model, the protective cover and the check curtain can shield an unwired interface, thereby effectively preventing dust, rainwater and other impurities from falling into the unwired interface, preventing the unwired interface from poor contact in the subsequent wiring process, improving the reliability of line connection and the stability of data transmission, and improving the reliability of data transmission. The potential safety hazard of wiring short circuit of the interface is reduced; dustproof and waterproof protection can be achieved for the interface through the cover plate and the sealing piece, safety during connection of an external connector and the interface is guaranteed, accuracy during data transmission is guaranteed, and use is reliable.

The invention discloses a portable energy storage device and an energy storage system.The portable energy storage device comprises a shell assembly, an energy storage module, a connecting base and a connecting piece, the shell assembly comprises a bottom shell and a top shell which are arranged in a split mode in the first preset direction, and in the first preset direction, the height of the bottom shell is larger than that of the top shell; a connecting protrusion is arranged on the inner side wall face of the bottom shell in a protruding mode, the connecting protrusion is provided with a containing cavity and an opening communicated with the containing cavity, the energy storage module is arranged in the bottom shell and comprises an energy storage unit and a fixing piece wrapping the periphery of the energy storage unit, the energy storage unit is fixed in the bottom shell through the fixing piece, the fixing piece is provided with a fixing part, and the fixing part is arranged in the bottom shell. The fixing part is provided with a first through hole penetrating in the first preset direction, the structural strength of the connecting base is different from that of the connecting protrusion, the connecting base is embedded into the containing cavity from the opening, and the connecting piece penetrates through the first through hole from top to bottom in the first preset direction and is connected with the connecting base.

The utility model provides a drainage device, battery pack shell and battery pack, including the main part that is provided in the drainage hole of battery pack shell, the main part is internally provided with imbibition expansion body, the main part one end that faces the inside of battery pack shell is provided with the sealing part, the main part one end that is located outside the battery pack shell is provided with the plugging cover, and the sealing part is provided with the sealing part. An elastic piece is arranged between the plugging cover and the main body piece; under the action of the elastic force of the elastic piece, the plugging cover and the main body piece are kept in an abutting state, after the sealing part is broken and loses efficacy, the liquid absorption expansion body absorbs liquid, expands in the first direction and jacks up the plugging cover after overcoming the elastic force, and the interior and the exterior of the battery pack shell are communicated. According to the liquid discharging device disclosed by the utility model, the sealing part, the liquid absorption expansion body and the elastic piece are matched, so that the airtight reliability of the battery pack can be effectively ensured, and when the electrolyte leaks too much, the liquid absorption expansion body absorbs liquid to expand and overcomes the elastic force to jack up the plugging cover, so that the inside and the outside of the battery pack shell are communicated, and the electrolyte is smoothly discharged.

The invention provides a high-shielding type intelligent automobile Ethernet connector, and belongs to the technical field of connecting devices.The high-shielding type intelligent automobile Ethernet connector comprises a connecting base, a connecting plug and a sleeve shielding assembly, and butt joint of the connecting plug and the connecting base is locked through a buckle assembly; the sleeve shielding assembly comprises a first shielding block, a first shielding cylinder, a second shielding cylinder, a second shielding block, a first spring, a clamping block and a hook-shaped clamping groove, one end of the second shielding cylinder extends into the first shielding cylinder, the first shielding block is fixedly connected to the inner wall of the first shielding cylinder, and one end of the first shielding block abuts against the first spring; the other end of the first spring abuts against the end portion, extending into the first shielding cylinder, of the second shielding cylinder, and rebounding of the first spring enables the clamping block to be clamped into the locking portion of the hook-shaped clamping groove to complete butt joint of the first shielding cylinder and the second shielding cylinder. By using the device, the problems that when a traditional connector is connected with a socket, gaps exist, electromagnetic interference is caused, and signal transmission is affected are solved.

The utility model discloses an inserting plate type lamp holder inner core structure convenient to assemble automatically, and belongs to the technical field of lamps. Comprises: a connection housing; the wick module and the conductive elastic sheet are inserted from the front end and the rear end of the connecting shell respectively, conductive copper foil is distributed on a circuit board part at the insertion end of the wick module, the insertion end of the conductive elastic sheet abuts against the conductive copper foil, and the other end of the conductive elastic sheet is used for being in contact with an electric wire for electrification. According to the design, a filament support and a lamp holder are omitted, the cost is reduced, the assembling process is omitted, the steps of welding the contact pins and manually pairing the contact pins and the plug bushes are omitted, and the cost is reduced and the efficiency is improved. The utility model further discloses a waterproof lamp holder with the lamp holder inner core structure, the waterproof lamp holder comprises a lamp holder, a mounting plate is arranged in the lamp holder and divides the lamp holder into a lamp wick mounting cavity and a wire containing cavity, and the connecting shell is connected with the mounting plate. After the electric wire is fixed in the electric wire accommodating cavity, the electric wire accommodating cavity is filled with glue, and then the electric wire accommodating cavity is sealed, so that a good waterproof effect is achieved.

One side of a top plate is hinged to a bottom plate, a limiting base plate is arranged on one side of the bottom plate, a sliding groove which is not communicated with the outside and a plurality of clamping grooves which are communicated with the sliding groove and have different distances from the hinged position on the bottom plate are formed in the limiting base plate, and the limiting base plate is arranged on the bottom plate. Each clamping piece comprises a connecting plate and a clamping column arranged at one end of the connecting plate, the pair of connecting plates are symmetrically hinged to the middle of the top plate, the clamping columns can horizontally move in the sliding grooves and are embedded into the clamping grooves, and the clamping columns are embedded into the different clamping grooves so that the connecting plates can support the top plate at different angles. According to the stamping bed support, the clamping columns are embedded into different clamping grooves, so that a stamping bed located on the top plate can face a seal cutting person at different inclined angles, the cervical vertebra of the seal cutting person can be protected, the opening and closing angle between the top plate and the bottom plate is limited due to the fact that the clamping columns are limited by the clamping grooves and the sliding grooves, and the connection reliability of the stamping bed support is guaranteed.

The invention belongs to the technical field of sewage treatment tanks, and particularly relates to a modular prefabricated assembly type sewage treatment tank. The water pool comprises a water pool main body, the water pool main body comprises a plurality of prefabricated concrete module components which are arranged at intervals in the length direction of the water pool main body, every two adjacent prefabricated concrete module components are set as a first module component and a second module component respectively, and an integral U-shaped splicing seam is formed between each first module component and the corresponding second module component; the U-shaped splicing seam is composed of a bottom plate splicing seam located at the bottom of the U-shaped splicing seam and side plate splicing seams located on the two sides of the U-shaped splicing seam, the U-shaped splicing seam is internally provided with an elastic seam material filling solidification structure layer, and the first module component and the second module component are connected through a plurality of sets of connecting assemblies arranged in the length direction of the U-shaped splicing seam at intervals. Each connecting assembly comprises a spherical hinge support, a first connecting rod, a sleeve, a second connecting rod, an annular limiting piece and an air spring. On-site rapid assembly can be facilitated, and meanwhile the durability of the joints of module components is improved.

The invention discloses a connecting structure of a steel pipe pile and a prefabricated bearing platform, a construction method of the connecting structure and a supporting structure. The connecting structure comprises a connecting piece, the prefabricated bearing platform and the steel pipe pile. A connecting plate is arranged at the top of the prefabricated bearing platform, a pre-embedded steel pipe is arranged in the prefabricated bearing platform, the top of the pre-embedded steel pipe is closed through the connecting plate, the upper end of the steel pipe pile is inserted into the pre-embedded steel pipe, and an end plate is arranged at the upper end of the steel pipe pile. Grouting materials are filled between the steel pipe pile and the connecting plate and between the steel pipe pile and the inner wall of the embedded steel pipe, the connecting piece penetrates through the connecting plate and the end plate to connect the connecting plate with the end plate, and the connecting structure, the construction method of the connecting structure and the supporting structure can guarantee the construction precision.

The invention discloses a hinge assembly, a mechanical joint and a robot. A plurality of structural members of the hinge assembly comprise a first structural member, a second structural member and a third structural member. The plurality of bearings of the hinge assembly includes a first bearing and a second bearing. In the axial direction, the bearing seat of the second structural part is located between the bearing seat of the first structural part and the third structural part, the first bearing ring is located between the first bearing and the second bearing, and the two end faces of the first bearing ring abut against the inner ring of the first bearing and the inner ring of the second bearing correspondingly. The second bearing ring is located between the second bearing and the third structural part, and the two end faces of the second bearing ring abut against the inner ring of the second bearing and the third structural part correspondingly. The hinge assembly further comprises a fastening assembly, and the fastening assembly fastens the inner ring of the first bearing, the first bearing ring, the inner ring of the second bearing, the second bearing ring and the third structural part together in the axial direction. Therefore, linkage of the third structural part, the inner ring of the first bearing and the inner ring of the second bearing can be achieved.

The invention relates to the technical field of data transmission control. In particular to a data transmission control method, device and equipment based on an SPI communication protocol and a medium, the method comprises the following steps: acquiring parameter information of SPI communication, and performing initial configuration on the SPI communication through an MCU according to the parameter information of the SPI communication to generate final configuration information of a chip selection signal; based on the final configuration information of the chip selection signal, pre-formatting the image information according to a communication protocol of the TFT screen to obtain formatted image information, and storing the formatted image information in an SPI-FLASH according to a structure sequence of the communication protocol of the TFT screen; and after the initial configuration and the formatted image information are stored, the MCU controls the final configuration information of the chip selection signal of the SPI, reads the formatted image information from the SPI-FLASH, and directly transmits the formatted image information to the TFT screen for display. The method has the effect of improving the data transmission efficiency and the display quality.

The invention relates to a doorsill assembly, a vehicle body structure and a vehicle. The doorsill assembly comprises a doorsill inner plate, a doorsill outer plate and a reinforcing plate. The threshold inner plate and the threshold outer plate are connected and define an energy absorption cavity. The reinforcing plate is arranged in the energy absorption cavity, and the two opposite sides of the reinforcing plate are connected with the threshold inner plate and the threshold outer plate correspondingly. A connecting support is arranged at the bottom of the reinforcing plate and connected with the doorsill outer plate. The two opposite sides of the reinforcing plate are connected with the doorsill inner plate and the doorsill outer plate correspondingly, meanwhile, the bottom of the reinforcing plate is provided with a connecting support connected with the doorsill outer plate, at least three connecting and fixing points are arranged between the reinforcing plate and the doorsill outer plate and between the reinforcing plate and the doorsill inner plate, the position of the reinforcing plate in the energy absorption cavity is more reliable, the reinforcing plate is prevented from turning over, and the service life of the doorsill is prolonged. Therefore, collision energy can be transmitted to the reinforcing plate from the doorsill outer plate and then transmitted to the doorsill inner plate, so that the energy absorption effect of the doorsill assembly is improved, the collision intrusion amount is reduced, and the safety performance of the vehicle can be improved.

The utility model relates to the technical field of automobile charging connectors, in particular to a charging socket capable of being conveniently assembled, and solves the problem that a terminal of a charging socket in the prior art cannot be conveniently assembled. Which comprises a main shell connected with a PCB (printed circuit board), and is characterized in that the PCB is provided with signal elastic contacts, the main shell is provided with signal terminals, the end parts of the signal terminals are in contact with the signal elastic contacts, and the end parts of the signal terminals are provided with protective structures matched with the signal elastic contacts. The beneficial effects are that when the signal terminal is connected with the signal elastic contact, the signal terminal contact surface presses the signal elastic contact to realize connection, and the protection groove completely wraps the signal elastic contact to play a role in protecting the signal elastic contact. In the assembling process of the charging socket, the metal terminal and the PCB are in contact connection in a radial compression mode, signal transmission between the metal terminal and the PCB is achieved, the requirement for the installation precision of the metal terminal is low, and the assembling efficiency of the charging socket can be improved.

The invention discloses a butt welding connection structure of a steel-plastic composite pipe and a connection method of the butt welding connection structure, relates to the technical field of composite pipe butt joint structures, and is mainly used for solving the problem that leakage risks exist in common steel-plastic composite pipe connection modes. According to the main structure, adjacent outer-layer steel pipes are connected in a butt welding mode through radial flaring sections which are arranged at the ends of the outer-layer steel pipes and are of an integrated structure with the outer-layer steel pipes; the end parts of the adjacent inner-layer plastic pipes are connected, a filler cavity is formed between the end parts of the adjacent inner-layer plastic pipes and the radial flaring sections which are in butt welding connection, and threaded holes communicated with the filler cavity are formed in the radial flaring sections. The invention provides a butt welding connection structure of a steel-plastic composite pipe and a connection method of the butt welding connection structure, which can ensure the loading capacity and the connection reliability of a connection part while completely preventing a medium in an inner-layer plastic pipe from being in contact with an outer-layer steel pipe, and increase the applicable working condition range of the product while avoiding the leakage of the medium.

The invention discloses a quick-install assembly of a tool assembly for a lawn aerator, the main points of which are: comprising a hanging foot fixing seat, a pressing seat and a locking device; one end of the pressing seat is rotatably connected and arranged on the hanging foot fixing seat, the pressing seat can be rotated to open or close, and when closed, the other end forms a limited fixed connection with the hanging foot fixing seat through the locking device; the left end of the tool assembly is rotatably arranged in the hanging foot fixing seat and the pressing seat, and the left end of the tool assembly is detachably arranged in the hanging foot fixing seat and the pressing seat. The quick-install assembly of the tool assembly for a lawn aerator of the invention has a simple structure and is easy to operate. The pressing seat can be opened or closed by one hand, which saves time and effort.

The utility model relates to a pressure measuring diaphragm capsule protecting and cleaning device which comprises a top cover and a base, clamping grooves are formed in the bottom of the top cover at equal intervals, clamping strips are fixedly connected to the top of the base at equal intervals, the clamping strips are used in cooperation with the clamping grooves, and the base is located on the outer side of a measuring diaphragm capsule. The device has the beneficial effects that a disposable film can be quickly fixed above the measuring diaphragm capsule, the influence of the external environment on the measuring diaphragm capsule is reduced, and the risk that the measuring diaphragm capsule is damaged or the measuring precision is reduced due to factors such as accidental collision or dust is reduced.

The application relates to a gear expansion sleeve structure for coaxially fastening a gear on a connecting shaft, which comprises an inner pressure expansion sleeve, an outer pressure expansion sleeve and adjusting screws, the inner pressure expansion sleeve is axially symmetrically sleeved on the outer surface of the connecting shaft, the inner surface of the inner pressure expansion sleeve is gradually abutted against the outer surface of the connecting shaft; the outer pressure expansion sleeve is axially symmetrically sleeved on the inner diameter of the gear, and the end portion is abutted against the end surface of the gear, the outer surface of the outer pressure expansion sleeve is gradually abutted against the inner surface of the inner pressure expansion sleeve; the adjusting screws are provided with a plurality of end portions penetrating through the inner pressure expansion sleeve and the outer pressure expansion sleeve, and the inner pressure expansion sleeve is axially moved by being extruded through the axial movement of the adjusting screws, and is abutted against the inner surface of the outer pressure expansion sleeve and the outer surface of the connecting shaft, and the outer surface of the outer pressure expansion sleeve is extruded to the inner surface of the gear. The application realizes the stability between the gear and the connecting shaft, makes the component combination force more reasonable, and ensures the stability of the overall structure.

The invention belongs to the technical field of night vision devices, and particularly discloses a four-eye night vision device. Two image intensifiers are arranged in a main lens frame of the four-eye night vision device, a circuit board is arranged between the two image intensifiers, two objective lenses are fixed to the object side of a lens body, an ocular lens is connected to the image side of the lens body, two ocular lens sets are arranged in an ocular lens frame, and an ocular lens clamping sleeve is fixed to the image side of the ocular lens frame; the objective lens seat extends into the main lens frame and abuts against the image intensifier, the objective lens group is in threaded connection with the objective lens seat, the objective lens pressing ring is in threaded connection with the main lens frame and abuts against the objective lens seat, the focusing hand wheel is fixed on the objective lens group, a flange plate is arranged on the image side of the objective lens seat, the image side of the objective lens pressing ring abuts against the flange plate, and a sealing ring I is arranged between the image side of the objective lens pressing ring and the flange plate. The objective lens pressing ring abuts against the flange plate of the objective lens seat and is in threaded connection with the main lens frame, and the objective lens group is in threaded connection with the objective lens seat, so that the objective lens is convenient to connect and adjust, and the device has the characteristics of compact structure, light weight, convenience in installation, reliability in connection and low cost.

The utility model provides a suspension control arm, a suspension system and a vehicle. The suspension control arm comprises a control arm body, an elastic buffer mechanism is arranged on the control arm body, the elastic buffer mechanism can abut against a vehicle body under wheel jump excitation, and the elastic buffer mechanism comprises a base and an elastic buffer block arranged on the base; the elastic buffering mechanism is fixed to the control arm body through a base and abuts against a vehicle body through an elastic buffering block. According to the suspension control arm, the elastic buffering mechanism composed of the base and the elastic buffering block is arranged on the control arm body, the suspension control arm abuts against a vehicle body through the elastic buffering mechanism under wheel jump excitation, the overlarge wheel jump stroke can be limited, large wheel jump can be avoided, and the service life of the suspension control arm is prolonged. And the driving comfort of the vehicle can be improved.

The utility model belongs to building construction technical field especially for a kind of replaceable building pipeline pre-burying positioning slot structure, including strip board, support adjusting component, sliding seat, transverse position adjusting component, two slot positioning frames, two hollow shafts, open-close adjusting component and quick-release fixing component;The support adjusting component is set on strip board and is close to the position of both ends, the sliding seat is slidably installed on strip board, the transverse position adjusting component is set on the top side of strip board and is connected with sliding seat.The utility model design is reasonable, easy to operate, can realize the quick adjustment and accurate fixing of pipeline pre-burying positioning, can flexibly adjust the space position of slot positioning frame according to actual construction demand simultaneously, greatly improves construction efficiency, and using the mode of modular design makes each component can be replaced and maintained separately, reduces use cost, especially suitable for the complex building scene needing frequent adjustment pipeline direction.

This invention discloses a car roof rack assembly fixture, comprising: a connecting assembly; a pair of clamping assemblies respectively connected to both ends of the connecting assembly for positioning and clamping the corresponding roof rack; a clamping mechanism connected to the connecting assembly; and an adsorption assembly configured to adsorb onto the glass roof, and applying force to the connecting assembly through the clamping mechanism to press the roof rack clamped by the pair of clamping assemblies firmly against the surface of the glass roof. This car roof rack assembly fixture of the present invention can achieve precise assembly and positioning of the roof rack and glass roof, ensuring the consistency of the final product's appearance and the reliability of the connection, thereby improving production efficiency and product quality. The present invention also discloses a method for assembling a car roof rack and a glass roof.

The utility model relates to the technical field of vehicles, in particular to a rear auxiliary frame assembly and a vehicle, and aims to solve the problem that an existing rear auxiliary frame assembly cannot meet the requirements for strength and light weight at the same time. In order to achieve the purpose, the rear auxiliary frame assembly comprises a first longitudinal beam, a second longitudinal beam, a first cross beam and a second cross beam, the first longitudinal beam and the second longitudinal beam are oppositely arranged; the first cross beam and the second cross beam are respectively arranged between the first longitudinal beam and the second longitudinal beam; the height direction of the first beam and the height direction of the second beam are not parallel to each other. Through the structural arrangement, the load transmission direction when the longitudinal beam transmits the load to the cross beam is changed, and then the force transmission angle between the longitudinal beam and the cross beam is changed, so that the load applied to the longitudinal beam can be smoothly transmitted to the cross beam, and the strength and the bearing capacity of the rear auxiliary frame assembly are greatly improved; therefore, a reinforcing plate in an original rear auxiliary frame assembly can be omitted, and light weight of a vehicle is facilitated.

The utility model relates to anti -static jumper wire installation technical field, especially anti -static jumper wire quick installation equipment, including installation pincers, including two tongs, the tong head of setting in the tong one end, and the tong mouth of opening in the tong head top, jumper wire, including female buckle gasket and sub buckle gasket, the connecting piece of fixed connection in the one side of sub buckle gasket, the fixed sheet of fixed connection in the other side of sub buckle gasket, the wire of connection in the fixed sheet one side, the utility model discloses a special installation pincers is set, and the special shape of the tong mouth in installation pincers makes it can quickly suit the female buckle gasket, sub buckle gasket and the outside of bolt, through female buckle gasket and sub buckle gasket can pre -separate and stick bolt, and cooperate tong mouth primary fixation can be completed in one operation, changes the cumbersome process that traditional method can need to operate bolt or use additional tool one by one, through jumper wire tightly wraps bolt, guarantees the reliability of connection and the conduction performance.

The invention provides a dumbbell-shaped precast block, a precast retaining wall adopting the precast block and a construction method of the precast retaining wall, the dumbbell-shaped precast block comprises an inner wall module and an outer wall module, a transverse supporting beam is arranged between the inner wall module and the outer wall module, and vertical anchoring rib inserting grooves and transverse anchoring rib inserting grooves are formed in the two side walls of the inner wall module and the two side walls of the outer wall module correspondingly; a main wall of the prefabricated retaining wall is built through dumbbell-shaped prefabricated blocks, end walls are built at the two ends of the main wall through end wall prefabricated blocks, and vertical anchoring rib inserting grooves and transverse anchoring rib inserting grooves are also formed in the end wall prefabricated blocks. Anchoring ribs are arranged in the vertical anchoring rib inserting grooves and the transverse anchoring rib inserting grooves of the inner wall module, the outer wall module and the end wall prefabricated blocks in a penetrating mode, a retaining wall hollow groove is defined by the inner wall module, the outer wall module and the end wall prefabricated blocks, and low-grade concrete or rubble concrete is backfilled in the hollow groove. The weight of the precast blocks and the use amount of concrete can be reduced, and the compression resistance and shear resistance of the retaining wall are guaranteed.