32results about How to "Reduce displacement distance" patented technology

The invention relates to an agricultural piston bale press. This press includes a pressing piston arranged in a bale chamber, an intake device to take in crop material, and a stuffing device, wherein the stuffing device includes a feed passage and a stuffing mechanism, the stuffing mechanism includes an arm supporting tines, wherein said arm is movable by a first driving device to at least move the tines in and out of the feed passage and wherein said arm is pivotably supported by a fulcrum, the fulcrum being displaceable to selectively move the arm along the stuffing trajectory or load trajectory. The stuffing device includes a second driving device to displace the fulcrum, and in that the second driving device is mechanically independent of the main driving mechanism.

The invention relates to an agricultural piston bale press. This press includes a pressing piston arranged in a bale chamber, an intake device to take in crop material, and a stuffing device, wherein the stuffing device includes a feed passage and a stuffing mechanism, the stuffing mechanism includes an arm supporting tines, wherein said arm is movable by a first driving device to at least move the tines in and out of the feed passage and wherein said arm is pivotably supported by a fulcrum, the fulcrum being displaceable to selectively move the arm along the stuffing trajectory or load trajectory. The stuffing device includes a second driving device to displace the fulcrum, and in that the second driving device is mechanically independent of the main driving mechanism.

An exercising inversion table includes a base frame, a support post, a main post, a bench, and a lift unit. Thus, the user initially lies on the bench in a horizontal manner, thereby providing a comfortable sensation to the user when using the inversion table. In addition, the foot support post is disposed at a slightly bent state to satisfy the ergonomic design, so that the user's feet are placed on the support seat and pressed between the foot support bar and the ankle support bar smoothly and naturally, thereby providing a comfortable sensation to the user when using the inversion table.

The invention relates to a method and device for emergency braking of an elevator. The method comprises the steps of: receiving an emergency braking command, acquiring the current speed of the elevator and comparing the current speed with a predetermined speed value; if the current speed is greater than or equal to the predetermined speed value, controlling switch elements in an inverter to switch on / off, respectively, wherein any two phases in three phase outputs of the inverter are short-circuited; and if the current speed is smaller than the predetermined speed value, controlling switch elements in an inverter to switch on / off, respectively, wherein three phase outputs of the inverter are short-circuited; the three phase outputs of the inverter correspond to three phase inputs of a motor, respectively. According to the method and device provided by the invention, free operation of a car during emergency braking of the elevator can be eliminated, so that the safety of the elevator is improved.

An optical disk player, which comprises: a shell, a plummer fixed in the shell, an optical disk transport mechanism, a guiding mechanism, an optical disk loading final position detection mechanism, and a control part; the shell is 80-90 millimeters wide at the optical disk insertion direction; the detection parts of the guiding mechanism are located between the plummer and the delivery roll of the transport mechanism; the optical disk loading final position detection mechanism comprises a support part and a trigger bar; one end of the support part is rotatablely fixed to the upper base plate near the detection part of one detection bar, and its middle is provided with an assorted part interacting with the detection bar; the middle of the trigger bar is rotatablely fixed to the free end of the support part, of which one end is provided with a contact part for contacting the periphery of an optical disk, and the other end is connected to the control part. When an optical disk is at the playing position, a part of the optical disk will be exposed out of the shell of the optical disk player, so, when the optical disk is played, the status of the optical disk in the optical disk player can be intuitively seen from the outside.

The invention relates to the field of screw compressors, in particular to a three-stage screw compressor which comprises a device main body; a first compressing cavity is formed in the upper end of the interior of the device main body; a water flow groove is formed in a position, opposite to the outer side of the first compressing cavity, of the device main body; a damping base is fixedly mountedat the lower end of the device main body; and a radiating fin is fixedly mounted on the outer side of the device main body. Male rotors in the first compressing cavity and a second compressing cavityare meshed with the two sides of the driving gear of a driving motor through driven gears, so that the driving motor can simultaneously drive the first compressing cavity and the second compressing cavity to start to compress the air, power consumption is reduced, the air compressed in the first compressing cavity enters the second compressing cavity through a first ventilating passage to be compressed once more, the compression ratio of each stage is reduced, the differential pressure of each stage is reduced, and the volumetric efficiency of the compressing process is further improved to enable the load of a bearing to be smaller, and the service life of the bearing is prolonged.

The invention discloses a sealed type high-flux high-efficiency full-automatic biosynthesis device. The sealed type high-flux high-efficiency full-automatic biosynthesis device comprises a moving plate, several synthesis cavity units, a sealing plate assembly, a sample adding unit and several pressurizing sealing units; the moving plate moves horizontally and linearly; the several synthesis cavityunits are fixed below the moving plate and form an upper opening in the moving plate; the sealing plate assembly is positioned above the moving plate and forms a sealed space with the moving plate through up-down movement; the sample adding unit is fixed on the sealing plate assembly; the several pressurizing sealing units are fixed on the sealing plate assembly and seal the upper opening; and the movable plate is driven by a driving part to move among the position of the sample adding unit and the positions of the pressurizing sealing units. According to the sealed type high-flux high-efficiency full-automatic biosynthesis device in the invention, automatic addition of the sample amount in the synthesis reaction process of a large batch of ultra-micro biological samples is realized; primers are automatically transferred into a sealed reaction cabin; furthermore, automatic pressurization and pressure maintaining are carried out; the pressure and synthesis speed required by synthesis are precisely controlled; and the biosynthesis efficiency is greatly improved.

The invention relates to a clamping tool for crankshaft repairing and an application method thereof. The clamping tool for crankshaft repairing comprises a workbench, wherein a length adjusting mechanism is arranged in the workbench; a welding moving mechanism is arranged at the end, close to the length adjusting mechanism, of the workbench; clamping mechanisms are arranged at one end of the top of the length adjusting mechanism; a scraping mechanism is arranged between the clamping mechanisms; a waste discharging mechanism is arranged at the top of the workbench; a damping mechanism is arranged at the bottom of the workbench; and the length adjusting mechanism comprises a movable supporting plate. The clamping tool for crankshaft repairing provided by the invention achieves the beneficial effects that hydraulic rods are used for driving top plates to move, so that rapid clamping of the device is facilitated; a first motor is used for driving two bidirectional threaded rods to rotate, so that crankshafts with different sizes can be conveniently clamped and fixed; a moving block is driven by a handle to move to a proper position, so that redundant residues on the crankshaft are conveniently scraped by a scraper, and influence on use of the device is prevented; a vibration motor drives an inclined plate to vibrate, so that waste is conveniently discharged; and screw rods rotate to extrude and penetrate through springs, so that the displacement distances of movable rods are reduced, and damping is facilitated.

The invention relates to a device for gas and / or vacuum distribution (1) for a sheet processing machine (100). The device for gas and / or vacuum distribution (1) comprises: at least one controllable pilot valve (4; 40), a fixed body (5) comprising: at least one main gas inlet (7) intended to be connected to a gas or vacuum source, at least one main gas outlet (8) intended to be connected to at least one suction cup and / or to at least one nozzle, at least a first and a second control gas openings (10, 11), at least one control gas opening (10, 11) being connected to the controllable pilot valve(4; 40), at least one housing (9) comprising a first chamber (9a) communicating with said main gas inlet (7) and outlet (8) and a second chamber (9b) communicating with the first and second control gas openings (10, 11), at least one mobile piston (6) axially movable in the housing (9) by the action of a control gas or vacuum supplied in the second chamber (9b) through the at least one control gasopening (10, 11) connected to the controllable pilot valve (4; 40), the mobile piston (6) being movable between : a closed position in which the mobile piston (6) blocks a gas path (16) between saidmain gas inlet (7) and outlet (8) in the first chamber (9a), and -an open position in which the mobile piston (6) releases the gas path (16), first and second chambers (9a, 9b) being isolated from each other by cooperation of shapes between the mobile piston (6) and the housing (9) without frictional seal between the mobile piston (6) and the housing (9). The invention also relates to a suction unit and a feeder comprising such a device for gas and / or vacuum distribution. The invention further relates to a sheet processing machine comprising such feeder or such a device for gas and / or vacuum distribution.

The invention discloses a fracturing and imbibition method for a low-permeability oil reservoir, and belongs to the technical field of oil reservoir development. The method comprises the following steps: preparing a first liquid amount of dry layer energizing fluid, a second liquid amount of gel fracturing fluid with a first sand content, and a foaming type imbibition agent with a target concentration, and injecting the dry layer energizing fluid into an adjacent dry layer of a target oil layer under the condition that the injection pressure of the target oil layer is greater than the fracture pressure of the target oil layer, and gel fracturing fluid and a foaming type imbibition agent are sequentially injected into the target oil layer. According to the technical scheme provided by the embodiment of the invention, the dry layer energizing fluid is adopted, the bottom layer energy of the target oil layer is increased, the gel fracturing fluid is adopted, the underground flowing environment of crude oil can be improved, the flow conductivity is improved, the foaming type imbibition agent is adopted, and the foaming type imbibition agent can be converted into a foam state from a liquid state under the crude oil shearing condition, so that the foaming type imbibition agent can be converted into the foam state from the liquid state. The displacement distance of crude oil can be reduced, the backflow difficulty of the crude oil is reduced, and the purpose of improving the recovery efficiency is achieved.

The invention discloses a high-strength aluminum film. The high-strength aluminum film comprises a first fixing layer, a second fixing layer, two bonding layers and a surface layer, wherein the top ofthe first fixing layer and the top of the second fixing layer are both fixedly connected with the surface layer, and the two bonding layers are fixedly installed at the bottom of the first fixing layer and the bottom of the second fixing layer correspondingly; a movable groove is formed in one side of the first fixing layer, a fixed base is slidably connected in the movable groove, and one side of the fixing base extends to the outer side of the first fixing layer and is fixedly connected with one side of the second fixing layer; and a connecting groove is formed in the top of the fixing base, a gear is rotationally connected to the inner wall of the top of the moving groove, and the gear is located in the connecting groove. According to the film, the operation is simple, when an aluminumfilm body is subjected to tensile force, under the actions of an extension spring, a torsion spring and a supporting spring, and the displacement distance between the first fixing layer and the second fixing layer is greatly reduced so that the surface layer can be effectively prevented from being damaged.

The invention discloses an automobile rubber wire-passing dustproof sheath, includes a rubber body sheath, At both end of that rubber main body sheath, a rub auxiliary sheath is arranged, An anti-friction part is arranged inside the rubber auxiliary sheath, one end of the anti-friction part penetrates the rubber auxiliary sheath and extends to the outside of the rubber auxiliary sheath, and one end of the anti-friction part located outside the rubber auxiliary sheath is fixedly connected with the outer surface of the rubber auxiliary sheath. The invention relates to the technical field of automobile accessories. As that dust-proof effect is improve, Avoid friction heat generation between the wire harness and the inner surface of the rubber sheath, The utility model is convenient for binding the wire harness, preventing the wire harness from being dragged to cause the deformation of the protective jacket, dust prevention is carried out from multiple angles, the dust prevention effect isimproved, the tidiness and cleanness of the wire harness are ensured, the safety hidden danger of friction heat generation is eliminated, the wire harness can be better protected, deformation is prevented, the shape of the device is maintained, and the service life of the device is prolonged.

An autofocus method for a projector, based on an autofocus component of the projector, the method sets an anchor point, an effective focus range, a coarse focus point and a fine focus point, by means of an image sensor, a data processor, a drive motor and an optical lens The negative feedback control mechanism composed of the group finds the optimal fine-focus image quality and the best fine-focus point through the coarse focus process and the fine focus process, and accordingly shifts the optical lens group to the best focal length position to complete autofocus. By setting the anchor point, the present invention shields the difference problem caused by the projector using different optical lens groups in the focusing process, and expands the scope of application of the present invention; by setting the effective focus range, the automatic focus speed is improved; by setting the focus starting point , to ensure the accuracy of auto focus.

The invention relates to an automatic production integrated device for a safety air bag and a production method. The automatic production integrated device comprises an injection molding module, a weighing module, a mechanical arm, a bar code printing module, an electric control module and a feeding streamline, the feeding streamline is arranged beside the injection molding module, a sensor is arranged on the weighing module, and the sensor, the mechanical arm, the bar code printing module and the injection molding module are all electrically connected with the electric control module. Producted five molds are scrapped before shutdown and restart every time, the mechanical arm clamps products, the products flow into the next station after being subjected to deburring, two-dimensional code printing and weighing, and therefore the technical problems that in the prior art, in the production process, effective control over technological parameters of the products is lacked, and bad risky products such as cold materials and poor strength are easily generated due to the fact that the technological conditions are not met for the first several products produced after an injection molding machine is shut down and restarted are solved.

The invention relates to the technical field of food processing, in particular to a hose feeding visual identification device convenient to position, which comprises a base, a mechanical arm mounted on the base, a conveying belt arranged on the base, a filling container placed on the conveying belt and a positioning mechanism mounted on the base, the positioning mechanism comprises two retaining arms and a photoelectric sensing switch, each retaining arm comprises a fixing base, a first servo motor is installed on the fixing base, the tail end of an output shaft of the first servo motor is in key joint with a rotating column, and a baffle is arranged on the peripheral surface of the rotating column. Through the positioning mechanism arranged on the base, when the filling container is conveyed to the feeding position by the conveying belt, the two retaining arms on the positioning mechanism can retain the filling container and clamp the filling container through clamping plates, so that the filling container is positioned on the base, and the displacement distance required by the mechanical arm for identifying the filling container to adjust the position is reduced, and the efficiency of performing visual identification and positioning on the filling container is improved.

The invention discloses a high-strength aluminum film. The high-strength aluminum film comprises a first fixing layer, a second fixing layer, two bonding layers and a surface layer, wherein the top ofthe first fixing layer and the top of the second fixing layer are both fixedly connected with the surface layer, and the two bonding layers are fixedly installed at the bottom of the first fixing layer and the bottom of the second fixing layer correspondingly; a movable groove is formed in one side of the first fixing layer, a fixed base is slidably connected in the movable groove, and one side of the fixing base extends to the outer side of the first fixing layer and is fixedly connected with one side of the second fixing layer; and a connecting groove is formed in the top of the fixing base, a gear is rotationally connected to the inner wall of the top of the moving groove, and the gear is located in the connecting groove. According to the film, the operation is simple, when an aluminumfilm body is subjected to tensile force, under the actions of an extension spring, a torsion spring and a supporting spring, and the displacement distance between the first fixing layer and the second fixing layer is greatly reduced so that the surface layer can be effectively prevented from being damaged.

The invention relates to the technical field of textile machinery, and provides a constant-tension yarn feeder. The constant-tension yarn feeder comprises a single-chip microcomputer control circuit,a rotary encoder, a first magnet, a motor for feeding super yarn, a motor drive control circuit, a display screen, a tension setting circuit, a power supply circuit and a yarn tension detection device, the yarn tension detection device comprises a base, a lever arranged on the base, a second magnet, a spring and a Hall sensor, the Hall sensor detects yarn tension compression pressure of yarn feeding in real time and sends the yarn tension compression pressure to the single-chip microcomputer control circuit, the rotary encoder divides a motor shaft of the motor into 4096 parts after rotating for one circle and 360 degrees, accurately identifies the rotation angle of the motor shaft of the motor and the real-time position of a motor rotor by sensing the first magnet, and sends the rotationangle and the real-time position to the motor driving control circuit; the single-chip microcomputer control circuit controls the speed of the motor through the motor drive control circuit to adjust the tension of the yarn. The constant-tension yarn feeder solves the problem that an existing constant-tension yarn feeder cannot effectively achieve tension balance control yarn feeding.

The invention provides plastic mold multi-station machining equipment, and relates to the technical field of plastic mold machining. The plastic mold multi-station machining equipment is composed of a base, a supporting column, a cross beam, a rotating motor, a grinding piece, a station body, a vertical plate, a center rod, a connecting plate, a side rod, a scraping plate and an auxiliary mechanism, wherein the position, close to the edge, of the top surface of the base is fixedly equipped with the supporting column; the cross beam is fixedly installed at the top end of the supporting column, the rotating motor is fixedly installed on the top face of the cross beam, the grinding piece is installed at the output end of the rotating motor, the station body is fixedly installed on the top face of the base, and the vertical plate is fixedly installed at the position, close to the edge, of the top face of the base. According to the grinding device, after grinding operation is completed, the top face of the base can be conveniently cleaned through the arranged scraping plate, meanwhile, a shielding plate on a side rod can also block a part of chippings, then the chippings generated in the grinding process can be concentrated on the base, cleaning operation is further facilitated, and actual use is facilitated.

The invention discloses a push-button safety switch which comprises a toggle button, an upper push rod, an upper push rod spring, a push rod fixing plate, a lower push rod, a lower push rod spring, a pressure rod guide cylinder, a pressure rod, a pressure rod spring, a guide rod return spring, a guide rod, a first side cover, a steering wheel return spring, a steering wheel, a support rod, a support rod spring, a switch shell, a first conducting element, a second conducting element, a second side cover, a third conducting element, a dual-alloy piece and an indicating lamp. The push-button safety switch is convenient in use, has the characteristics of low construction cost, high safety factor and the like, is not influenced by external forces, and can perform free strip.

The invention provides anti-drowning fast life-saving equipment with a function of greatly reducing the water flow impact. The anti-drowning fast life-saving equipment comprises a buoy, a water stabilizing hole, a balancing weight, a gas cavity, a gas channel, a storage battery, a stabilizing plate, an attaching adhesive plate, a side edge opening, a positioning rod, a push rod, a guide cylinder,a thin plate, a gas cushion, a gas valve, a push block, a driving wheel, a push plate and a sleeve, the water stabilizing hole is formed in one side of the buoy, the balancing weight is fixedly arranged inside the buoy, the gas cavity is formed in one side of the balancing weight, the gas channel is arranged on the outer side of the gas cavity, the outer side of the gas channel is provided with the storage battery, the outer side of the balancing weight is movably provided with the stabilizing plate, and the attaching adhesive plate is attached to the surface of the stabilizing plate. The stabilizing plate can be placed downwards to be placed in the water, meanwhile, when waves on the water surface impact the buoy, the water flow penetrates through the side edge opening to enter the stabilizing plate, the water flow is in contact with the inner wall of the stabilizing plate to impact towards the opposite side of the side edge opening, so that after the buoy moves by a certain distancein the impact direction of the water flow, the buoy moves towards an original position by a certain distance, and then the displacement distance of the buoy is reduced.

The invention discloses explosion-proof glass which comprises box body main glass, sound insulation glass is arranged at the rear end of the main glass, a partition plate is arranged at the upper end of the main glass, a protection mechanism is arranged at one end of the main glass, and the protection mechanism comprises a protection frame, a threaded hole, a fixing groove, a fixing block, a fixing plate, a sliding groove, a sliding block, a triangular plate and a first threaded rod. A buffer mechanism is arranged at one end of the protection mechanism. The triangular plate is fixed to the corner of the main glass, the situation that the main glass explodes due to the fact that a sharp instrument strikes the corner of the main glass is avoided, the displacement distance of the main glass is greatly reduced by means of stretching and compression of a buffer spring, the glass exploding probability is reduced, and by means of limiting of a limiting rod and fixing of a third threaded rod, the service life of the main glass is prolonged. The firmness between the glass and the wall body is improved, the development of the glass manufacturing industry is further promoted, and the use requirements are better met.

The invention relates to a method and device for emergency braking of an elevator. The method comprises the steps of: receiving an emergency braking command, acquiring the current speed of the elevator and comparing the current speed with a predetermined speed value; if the current speed is greater than or equal to the predetermined speed value, controlling switch elements in an inverter to switch on / off, respectively, wherein any two phases in three phase outputs of the inverter are short-circuited; and if the current speed is smaller than the predetermined speed value, controlling switch elements in an inverter to switch on / off, respectively, wherein three phase outputs of the inverter are short-circuited; the three phase outputs of the inverter correspond to three phase inputs of a motor, respectively. According to the method and device provided by the invention, free operation of a car during emergency braking of the elevator can be eliminated, so that the safety of the elevator is improved.

The invention discloses a chain link machining method, and relates to a hole machining method of a track link of a large engineering machine. The method comprises following steps that two chain pieces are placed in a side lying manner in the length direction and are horizontally and symmetrically spaced and fixedly clamped; a chain piece machining device is started, two synchronously-symmetric movable drill tools on the chain piece machining device are controlled to move to the positions above first bolt holes, the positions of the first bolt holes are first displacement points, drilling machining of the two first bolt holes begins to be carried out until machining is completed, and ascending is carried out; the two drill tools are moved to second displacement points, and the second displacement points are the ends of the vertical distances of the first bolt holes and second bolt holes; the two drill tools continue to move to the positions above the second bolt holes, the positions are third displacement points, drilling machining of the two second bolt holes begins to be carried out until machining is completed, and ascending is carried out; and the two drill tools return to the initial positions. According to the method, the machining time can be shortened, the machining efficiency is improved, and the structural symmetric precision of machining of two chain pieces is further improved.

The invention discloses a cleaning and cutting device for traditional Chinese medicine decoction pieces, and relates to the technical field of traditional Chinese medicine production. The cleaning and cutting device for the traditional Chinese medicine decoction pieces comprises a cleaning outer cylinder, wherein the cleaning outer cylinder is in rolling connection with a roller body; anti-blocking bristles are inlaid in a connecting vertical plate; a draining inner cylinder is fixedly connected with a universal wheel; a stirring rotating rod is fixedly connected with a spiral blade and a stirring supporting rod; an inner cylinder end cover is fixedly connected with a cleaning and dust removing nozzle; a dust removing fan is sleeved with a dust removing cloth bag; and the cleaning outer cylinder is connected with a supporting assembly in a riveting mode. The cleaning and cutting device for the traditional Chinese medicine decoction pieces provided by the invention solves the problems that a motor of a cleaning and cutting device for the traditional Chinese medicine decoction pieces generally bears too heavy pressure, the traditional Chinese medicine decoction pieces are prone to being stacked together when pre-dedusting is conducted in a spraying mode, the device is prone to vibration when the motor rotates, and meshes are prone to being blocked by disintegrating slag of the traditional Chinese medicine decoction pieces.

The invention discloses a push-button safety switch which comprises a toggle button, an upper push rod, an upper push rod spring, a push rod fixing plate, a lower push rod, a lower push rod spring, a pressure rod guide cylinder, a pressure rod, a pressure rod spring, a guide rod return spring, a guide rod, a first side cover, a steering wheel return spring, a steering wheel, a support rod, a support rod spring, a switch shell, a first conducting element, a second conducting element, a second side cover, a third conducting element, a dual-alloy piece and an indicating lamp. The push-button safety switch is convenient in use, has the characteristics of low construction cost, high safety factor and the like, is not influenced by external forces, and can perform free strip.

The invention discloses a novel fixed type flue supporting and deformation-resisting device for a reverberatory furnace. The novel fixed type flue supporting and deformation-resisting device for the reverberatory furnace comprises a base. A supporting cavity is arranged on the base. The inner walls on the two sides of the supporting cavity are both fixedly connected with sliding rails. Two slidingplates are connected to the sliding rails in a sliding manner. The sides, close to each side, of the two sliding plates are fixedly connected with the same supporting plate. The top of the supportingplate is symmetrically connected with two supporting rods in a sliding manner. The top ends of the two supporting rods are rotationally connected with the same supporting seat. The bottom of the supporting plate is fixedly connected with a rotating seat. The two sides of the bottom of the rotating seat are both rotationally connected with connection rods. Two connection plates are symmetrically connected to the inner wall of the bottom of the supporting cavity in a sliding manner. According to the novel fixed type flue supporting and deformation-resisting device for the reverberatory furnace,operation is easy, the supporting seat bears pressure, under the action of compression springs and a torsion spring, effective supporting force can be provided for the supporting seat, so that the top of the base can be effectively prevented from collapsing, and it is avoided that due to collapsing, production cannot be normally conducted.

The invention relates to a board working machine comprising a gas and / or vacuum distribution device. The gas and / or vacuum distribution device comprises: -at least one controllable pilot valve, -a stationary body comprising: -at least one main gas inlet connected to a gas or vacuum source, -at least one main gas outlet connected to at least one suction cup and / or at least one nozzle, - at least one first and one second control gas opening, at least one of which is connected to a controllable pilot valve, at least one housing comprising a first chamber and a second chamber , -at least one movable piston is movable between the following positions: a closed position, in which the movable piston blocks the gas passage, and an open position, in which the movable piston releases the gas passage, the first and second The two chambers are isolated from each other. The invention also relates to a method of guiding a gas and / or vacuum distribution device of a board working machine.

The invention discloses an automotive rubber wire-passing dustproof sheath, which comprises a rubber main sheath, rubber auxiliary sheaths are arranged at both ends of the rubber main sheath, and anti-friction parts are arranged inside the rubber auxiliary sheath, so that One end of the anti-friction part runs through the rubber auxiliary sheath and extends to the outside of the rubber auxiliary sheath, and one end of the anti-friction part outside the rubber auxiliary sheath is fixedly connected to the outer surface of the rubber auxiliary sheath. The invention relates to the technical field of auto parts . It achieves the purpose of improving the dust-proof effect, avoiding the friction and heat generation between the wire harness and the inner surface of the rubber sheath, facilitating the binding of the wire harness, and preventing the wire harness from being dragged and causing the sheath to deform. The dust-proof effect is improved from multiple angles and the dust-proof effect is guaranteed. It ensures the neatness and cleanliness of the wiring harness, eliminates the safety hazard of frictional heat generation, better protects the wiring harness, prevents deformation, maintains the shape of the device, and prolongs the service life of the device.