134results about How to "Strong structural stability" patented technology

The utility model relates to the technical field of walking aids, in particular to a wheel type folding walking aid which comprises a folding frame, a handle, a front wheel, a left rear wheel and a right rear wheel. The folding frame comprises left and right upright posts, left and right upright post sliding sleeves and a front wheel connecting rod group; shear fork folding mechanisms are arranged among the left stand column, the left stand column sliding sleeve and the right stand column, among the right stand column sliding sleeve, among the left stand column, the left stand column sliding sleeve and the front wheel connecting rod group, among the right stand column, the right stand column sliding sleeve and the front wheel connecting rod group, among the left stand column, the left stand column sliding sleeve and the left rear wheel, and among the right stand column, the right stand column sliding sleeve and the right rear wheel; locking mechanisms are further arranged between the left stand column and the right stand column and the left stand column sliding sleeve and the right stand column sliding sleeve. The folding and unfolding device is reasonable in structure, convenient to fold and unfold, high in structural stability after being unfolded, stable in walking, small in size after being folded, small in occupied space, in an upright state, stable in placement and free of toppling over, secondary folding or independent disassembly of part of parts is not needed during folding, and great convenience is brought to a user.

The invention discloses an organic conjugated fused ring polymer positive electrode material, and relates to the technical field of batteries. The molecular structural formula of the organic conjugated fused ring polymer positive electrode material is # imgabs0 #. The invention also provides a preparation method of the organic conjugated fused ring polymer positive electrode material and application of the organic conjugated fused ring polymer positive electrode material in a wide-temperature-range aqueous zinc ion battery. The raw materials used in the invention are green and environment-friendly, the price is low, the preparation process is simple, and when the positive electrode material is used as an aqueous zinc ion battery positive electrode material, excellent electrochemical properties such as high magnification, high cycle stability and excellent weather resistance can be realized. Therefore, the method is very suitable for large-scale popularization and application.

The invention relates to the technical field of ecological restoration and water resource management, in particular to a novel brick material based on corn straw as well as a preparation method and a use method of the novel brick material, and provides the novel brick material based on the corn straw in order to solve the problems of high water loss speed and slow ecological restoration of peat land. Comprising the following raw material components: corn straw powder, corn straw charcoal, calcium bentonite and corn stigma fiber, the corn straw powder, the charcoal, the calcium bentonite and the corn stigma fiber are mixed according to a specific proportion, and the mixture is subjected to compression molding to prepare the brick with good moisture retention performance and ecological compatibility. The method is specially used for water retention and vegetation recovery of the peat land.

This utility model relates to the field of photovoltaic cleaning robot technology, and discloses a cleaning device for a photovoltaic cleaning robot, including a slide table with a slot. Two sliders are slidably connected to the inner side of the slot. Connecting plates are rotatably connected to the lower side of the two sliders respectively. A cleaning roller shell is rotatably connected to the end of the two connecting plates away from the slide table. A cleaning roller is rotatably connected between the two sides of the cleaning roller shell. A cleaning roller lifting mechanism is provided on one side of the slide table to raise or lower the cleaning roller shell. This utility model is started by a second servo motor, which drives the two sliders to move closer or further apart. Through the interaction of the two connecting plates and the cleaning roller shell, the cleaning roller is raised or lowered, thereby adjusting the distance between the cleaning roller and the photovoltaic panel cleaning surface. It has the advantage of strong structural stability.

This utility model discloses a projector mounting bracket, belonging to the field of projector installation technology. It includes a first mounting component comprising a rotating block and a side connecting column, the rotating block and the side connecting column being fixedly connected; a second mounting component, the second mounting component being mounted on the end of the side connecting column and rotating relative to the side connecting column; a third mounting component, the third mounting component being mounted on the end of the second mounting component and rotating relative to the second mounting component; and a fourth mounting component, the fourth mounting component being movably connected to the third mounting component, the fourth mounting component being an L-shaped mounting plate with several mounting holes for mounting a projector. This utility model achieves stable installation of the projector, allows for multi-dimensional orientation adjustment of the projector for convenient use, and features a simple structure and strong structural stability, which helps improve the installation stability of the projector.

The invention provides a positive electrode material of a sodium ion secondary battery, a preparation method of the positive electrode material, the sodium ion secondary battery and electric equipment, and relates to the field of sodium ion batteries. The chemical formula of the positive electrode material of the sodium ion secondary battery provided by the invention is NaaNixFeyMnzM1-x-y-zO2, wherein a is more than or equal to 0.9 and less than or equal to 1.05, x is more than 0 and less than 1.0, y is more than 0 and less than 1.0, z is more than 0 and less than 1.0, 1-x-y-z is more than 0 and less than 1, and the element M is a metal element of which the valence is more than or equal to 2. According to the positive electrode material of the sodium ion secondary battery provided by the invention, the positive electrode active material is doped with the metal element containing the valence of + 2, + 3, + 4, + 5 or + 6 to regulate and control the molar weight of O-ions in lattice oxygen relative to O < 2-> when the positive electrode material of a sodium ion O3 structure is in a full charge state, so that the bonding strength of the doped metal element and oxygen is improved, and the content of high-activity O-free oxygen is reduced; and the sodium-electric O3 structure has relatively high structural stability.

The utility model relates to the technical field of coal mine filling mining, in particular to a fast and movable waste rock blocking wall for filling waste rock behind a support, and mainly solves the technical problems that an existing waste rock blocking wall is poor in structural stability, time-consuming and labor-consuming to build and poor in flexibility. The fast and movable type waste rock blocking wall comprises a bottom plate used for being attached to the ground of a roadway; the wall body assembly comprises a fixed wall body and spliced wall bodies, the bottom of the fixed wall body is hinged to the bottom plate, a hinged shaft is arranged in the width direction of the bottom plate, the number of the spliced wall bodies is at least one, the spliced wall bodies are detachably fixed to the upper portion of the fixed wall body, and the fixed wall body and all the spliced wall bodies form a complete wall body used for blocking waste rock; the supporting assembly comprises a telescopic rod and a locking piece, the telescopic rod is perpendicular to the width direction of the bottom plate, one end of the telescopic rod is hinged to the bottom plate, the other end of the telescopic rod is hinged to the fixed wall, and the locking piece is used for locking the length of the telescopic rod. The device is high in structural stability, easy and rapid to build and high in flexibility.

The utility model discloses a waterproof light guide key structure of an electronic product, which comprises a shell, a PCB (printed circuit board) is arranged in the shell, a key switch and an LED (light-emitting diode) lamp are arranged on the PCB, a key hole corresponding to the position of the key switch is arranged on the side surface of the shell, and the LED lamp is arranged in the key hole. And light guide keys which are clamped and fixed with the inner side of the shell, correspond to the key switches and the LED lamps and are made of silica gel materials are arranged in the key holes in an interference fit manner. According to the utility model, only one key hole is arranged, the good astigmatism of the silica gel material is matched with the structural modeling of the light guide key, the light guide effect of the function indicating lamp with a sense of science and technology is obtained, and the good ductility of the silica gel material is matched with the related structure of the shell, so that the key part is easily assembled, and the waterproof grade of the product can be improved; and in combination with the good buffering performance of the silica gel material, components such as the touch switch cannot be damaged in the falling or transportation vibration process of the product, and the product quality is improved.

The utility model relates to the technical field of oil-immersed transformers, in particular to a transformer oil tank and iron core connecting structure which comprises an oil tank bottom plate and an iron core base located above the oil tank bottom plate, a piston cylinder is fixedly installed on the oil tank bottom plate, a piston cylinder cover is installed at the upper end of the piston cylinder, and a through hole is formed in the middle of the iron core base. A connecting rod is vertically arranged in the through hole, the lower end of the connecting rod penetrates through the piston cylinder cover and extends downwards into the piston cylinder, a horizontally-arranged piston is installed at the lower end of the connecting rod, an elastic piece is arranged between the bottom of the piston and the bottom of the piston cylinder, and a first oil hole and a second oil hole are formed in the side wall of the piston cylinder from top to bottom. The up-and-down movement range of the piston is the distance between the highest point and the lowest point of the hole diameters of the first oil hole and the second oil hole in the vertical direction. According to the device, the elastic piece is adopted for damping, and meanwhile liquid pressure is added for assisting damping, so that the damping effect is good.

The utility model discloses an integrated fiber end beam splitter for multicore optical fiber, including the sheath and the inside bushing of its multicore optical fiber, and the multicore optical fiber includes a plurality of independent setting fiber cores, and the one end of each fiber core is induced modification and then etches and forms a microlens, and a plurality of microlenses form a microlens array, and each microlens is bonded with a grating of diffraction grating, and the diffraction grating is a two-dimensional plane film structure as a whole, covers the outside of microlens array, and the surface is etched with uniform and regular grating. The utility model discloses only through the end of the plurality of optical fibers is equipped with the microlens, and each microlens is bonded with a grating of diffraction grating, can make each fiber core light beam can enter corresponding microlens and complete collimation and diffract, and then bring the change of light beam phase and then split, and the application structure is simple, does not need additional coupling spare, and the splitting efficiency is high, and the stability is strong, effectively improves production efficiency, and reduces production cost.

The utility model discloses a liquid level visualization automatic induction soap dispenser which comprises a liquid soap bottle provided with an inner cavity and an intelligent pump head arranged on the liquid soap bottle. The liquid soap bottle comprises a bottom shell, a bottle body and a liquid level perspective ring connected between the bottom shell and the bottle body. A first limiting groove is annularly formed in an opening of the lower end of the bottle body, and a first limiting ring used for being embedded into the first limiting groove is annularly and upwards arranged at the top of the liquid level perspective ring in an extending mode. A second limiting groove is annularly formed in the top of the bottom shell, and a second limiting ring used for being embedded into the second limiting groove is annularly and downwards arranged at the bottom of the liquid level perspective ring in an extending mode. And the height of the liquid level perspective ring on the liquid soap bottle is less than or equal to 1 / 4 of the height of the liquid soap bottle. According to the liquid soap bottle, the liquid level perspective ring is arranged on the liquid soap bottle, and the height of the liquid level perspective ring on the liquid soap bottle is smaller than or equal to 1 / 4 of the height of the liquid soap bottle, so that a user can visually observe whether liquid soap needs to be supplemented or not without opening a bottle cap, the user can conveniently supplement the liquid soap in time, and normal use is prevented from being influenced by insufficient liquid soap.

The utility model discloses a novel backrest handle for protecting passengers, which belongs to the technical field of automobile seats and comprises a seat backrest, a handle, a handle blanking cap and a self-tapping screw. First holes are formed in two ends of the handle, a strip is arranged on the handle blanking cap, a second hole is formed in the end part of the strip, the handle is fixed on the seat backrest through a self-tapping screw, the self-tapping screw sequentially penetrates through the second hole and the first hole, and the handle blanking cap is in interference fit with the handle; the handle assembly is made of rubber materials, on the basis of meeting the requirements of Fanjin laws and regulations, the handle assembly is easy and convenient to install, soft and comfortable in material, good in manufacturability and capable of meeting the requirements of the GB 13057 standard and relieving injuries to the heads of passengers in the back row, the handle assembly is high in structural stability, the key size is easy to guarantee, and the handle assembly can be applied to follow-up platform type development of passenger car handle assemblies. The passenger car seat is suitable for passenger cars with passengers.

This invention relates to the field of heat insulation sheet technology and discloses a flame-retardant aerogel heat insulation sheet, comprising a heat insulation sheet body. The heat insulation sheet body has, from the outside to the inside along its thickness direction, a surface protective layer, a flame-retardant functional layer, an interface reinforcement layer, a core composite layer, and a bottom protective layer. Each layer is formed into an integrated structure through a gradient composite process. The core composite layer is made of aerogel powder and glass fiber composite. This flame-retardant aerogel heat insulation sheet, through the synergistic design of multiple physical layers, achieves deep composite of aerogel powder and glass fiber. Combined with a functional interface layer, a flame-retardant layer, and an installation adapter structure, it achieves comprehensive performance of "high heat insulation, strong flame retardancy, shatter resistance, and easy assembly," adapting to the heat insulation protection and insertion installation requirements of new energy lithium battery modules, effectively preventing the spread of thermal runaway and improving the safety of lithium battery use.

This invention belongs to the field of lithium metal battery technology, specifically relating to a fluorinated phase-separated polymer ion gel electrolyte, its preparation method and application, and lithium metal batteries. The fluorinated phase-separated polymer ion gel electrolyte provided by this invention comprises a solid phase and a liquid phase; the solid phase is a copolymer of a fluorinated acrylate monomer and a crosslinking agent containing carbon-carbon double bonds; the liquid phase comprises an ionic liquid and a lithium salt dissolved in the ionic liquid. Compared to liquid electrolytes and traditional SPEs, the fluorinated phase-separated polymer ion gel electrolyte provided by this invention has high ionic conductivity, mechanical strength, interfacial stability, and safety. It can effectively suppress the growth of lithium dendrites and adapt to large volume changes, avoiding short circuits and thermal runaway in lithium metal batteries under conditions of overcharging, over-discharging, or mechanical impact.

The utility model relates to a dual -purpose vehicle body structure and electric motor car, including non -cross type vehicle body and middle case, the non -cross type vehicle body includes the frame and with front pedal of detachable connection of frame, the middle case is used for with detachable connection of frame, the middle case sets up in the area of frame for accommodating the leg portion, forms cross type vehicle body, the middle case includes the box and the box cover, be equipped with the storage space in the box, the box cover is used for opening or closing the box, the utility model discloses the detachable connection of middle case realizes cross type and non -cross type vehicle body's flexible switching, can adapt to different riding scene and user preference.

The utility model discloses an antibacterial warm-keeping pet house with a massage function, which comprises a house body (2), four sides of the house body (2) are connected with side walls (1), and a house pad (3) is arranged in the house body (2). The nest pad (3) is detachably mounted in the nest body (2); the nest pad (3) comprises an outer sleeve (4), an opening (5) with a zipper is formed in one side edge of the outer sleeve (4), and antibacterial fluff is connected to the whole outer side face of the outer sleeve (4); the outer sleeve (4) is filled with a sponge block (6), a plurality of rows of massage cones (7) which are distributed in a staggered mode and protrude upwards are arranged on the top face of the sponge block (6), and a heat insulation layer (8) is connected to the bottom face of the sponge block (6). According to the utility model, not only can the massage function be added, but also the advantages of better comfort, better antibacterial property, better warm-keeping effect, better placement stability and more convenience in turnover operation of the nest pad are achieved.

The invention provides a helical ribbon type pre-liming barrel which comprises a barrel body and a stirring device which is arranged in the barrel body and is used for mixing mother liquor and lime milk, the stirring device comprises a speed reducing motor fixed at the top of the barrel body, a transmission shaft connected with the output end of the speed reducing motor and extending into the barrel body, a plurality of helical ribbon fixing seats fixed on the transmission shaft, a plurality of helical ribbons detachably connected with the helical ribbon fixing seats, and a dispersing disc fixed at the bottom end of the transmission shaft; the barrel body is provided with a mother liquor inlet for mother liquor to enter, a lime milk inlet for lime milk to enter and a sand liquor outlet for outputting mixed liquor formed by mixing the mother liquor and the lime milk. According to the helical ribbon type pre-liming barrel, preheated mother liquor and lime milk are fully mixed through the helical ribbon stirring devices which are arranged in a staggered mode and the dispersing disc with the open bottom, the attachment surface is small, binders are not prone to being generated, and the helical ribbon type pre-liming barrel has excellent stirring performance.

The utility model relates to a communication structure of a low-voltage drawer cabinet, and belongs to the technical field of power distribution equipment. A communication structure of a low-voltage drawer cabinet comprises a drawer unit, a communication assembly is arranged on one side of the drawer unit, and the communication assembly is composed of a communication socket supporting piece fixed to a side plate, a communication socket fixed to the communication socket supporting piece and a communication plug connected with the communication socket. And the communication plug baffle plate is arranged at the periphery of the communication socket support piece. The utility model has the beneficial effects that the design is ingenious, the installation is convenient, the structural parts can be automatically processed, and the cost is reduced; the structure is stable and not easy to damage; a side outgoing line communication function is satisfied and an anti-misoperation function is possessed at the same time.

The invention provides an energy storage DC-DC control module structure device, and relates to the technical field of energy storage equipment, the energy storage DC-DC control module structure device comprises a module shell, the left side and the right side of the module shell are both provided with fixing supports, the left side of the module shell is provided with a first connector, the right side of the module shell is provided with a second connector, and the module shell is provided with a module upper cover. A sealing ring and a module PCBA are arranged in the module shell, the module shell is made of a high-strength alloy material, an installation groove matched with the installation of the module PCBA is formed in the module shell, a limiting structure is arranged on the wall of the groove, and the fixing support is assembled in the module shell. The space occupation and the carrying cost of the energy storage equipment are greatly reduced, the device is not only suitable for a fixed energy storage power station, but also can be flexibly applied to mobile energy storage scenes such as a portable energy storage power supply, a mobile charging station and a vehicle-mounted energy storage system, and the market application range of the product is effectively expanded.

The application discloses a kind of kitchen biogas liquid treatment devices, belong to sewage treatment technical field, it includes connecting plate, ring cylinder, fling filter mechanism, filter mechanism, protective cylinder, butt joint pipe, microwave heating pipe and storage tank, ring cylinder is located on connecting plate, fling filter mechanism rotates and is installed in ring cylinder, filter mechanism is inserted in fling filter mechanism and is communicated, protective cylinder is installed on ring cylinder, butt joint pipe is communicated protective cylinder and fling filter mechanism.The device is transported by centrifugal force generated by fling filter mechanism rotation, microwave heating pipe is heated to reduce viscosity and reduce colloid adsorption, filter mechanism retains impurities, and storage tank collects primary filtrate.The device solves the problem that existing device is easy to block, needs flocculating agent, and maintenance is difficult, realizes efficient filtration, convenient maintenance and low cost.

The utility model relates to a screw jack device for large -scale work piece support leveling, including support frame, screw rod, hand wheel, bracket and bolt, support frame whole presents the trapezoidal structure of little up big, is equipped with the mounting hole on the support frame, is equipped with the stop hole on the upper portion of mounting hole, hand wheel is installed in the stop hole, and can rotate relative to support frame, screw rod lower part passes in hand wheel and mounting hole in proper order, and is fixedly connected through trapezoidal thread and hand wheel screw thread cooperation, upper portion passes through bolt and bracket fixed connection, the utility model discloses through support frame adopts the trapezoidal structure of little up big, greatly enhanced the overall rigidity, effectively reduced the risk of falling when supporting large -scale work piece, provides the stable support foundation for large -scale work piece, guarantees the security of operation process, simultaneously through the trapezoidal thread cooperation of hand wheel and screw rod, single person can easily realize the lifting operation of screw rod, need not many people cooperation, significantly improves the operation efficiency, can satisfy the demand of large -scale work piece support leveling fast.

The utility model discloses an integrated 3D printing shoe which comprises a vamp structure and a sole structure which are integrally formed, the vamp structure is wrapped in the circumferential direction of the sole structure to form a shoe cavity, the vamp structure is arranged in a single-layer latticed mode, the vamp structure comprises a toe cap area, a shoe heel area and a welt area, and the toe cap area and the welt area are arranged in a staggered mode. The sizes of grid openings in the toe cap area and the heel area are gradually reduced from the sole structure end to the welt area end, the sole structure is arranged in a hollowed-out shape and comprises a first sole and a second sole, and a plurality of stacked hollowed-out layers are arranged between the first sole layer and the second sole layer. The shoe provided by the utility model can effectively avoid the problem of glue failure at the integration part of the shoe, and has the advantages of strong air permeability and high foot comfort.

The invention relates to the technical field of cable protection, in particular to a cable protection sleeve. The protective sleeve comprises an inner layer, a middle layer and an outer layer, the middle layer comprises a first layer and a second layer, the first layer is fixedly connected with the inner layer, and the second layer is fixedly connected with the outer layer; the first layer is made of a glass fiber reinforced composite material, the second layer is of a grid framework structure made of a shape memory alloy material, the grid framework structure is embedded in the first layer, and inner grid spaces of the grid framework structure are filled with magnetorheological elastomers; the inner layer is a waterproof insulating layer sprayed on the first layer; the outer layer is made of a modified polyurethane material and is of a corrugated structure; the cable protection sleeve is provided with an opening structure, sealing parts are arranged on the two sides of the opening structure, the sealing parts on the two sides can abut against each other in a matched mode so that the installation cavity channel of the inner layer can be sealed and isolated from the outside, and the sealing parts are made of rubber materials. A plurality of rubber supporting rings are arranged on the inner wall face of the inner layer and protrude out of the inner wall face of the inner layer, and heat conduction grooves are formed in the rubber supporting rings.

This invention provides a method for promoting the differentiation of induced pluripotent stem cells (iPSCs) into three germ layers and its application in differentiation potential detection, relating to the field of biotechnology. The method includes seeding iPSCs into a culture medium containing 5 μM~20 μM E-cadherin activator 1, shaking culture to form embryoids, adding differentiation medium for differentiation culture, obtaining embryoids with activated three germ layer differentiation potential; seeding the embryoids with activated three germ layer differentiation potential into a container coated with a cell adhesion matrix, adding differentiation medium for further differentiation culture, inducing differentiation into three germ layer cells. This invention solves the technical problems in existing technologies where induction of iPSC differentiation into three germ layers via the embryoid pathway results in poor embryoid formation, poor embryoid state, poor long-term maintenance, and poor adhesion after embryoid transfer, leading to poor endoderm differentiation and migration abilities.

The utility model relates to metal wire rod processing equipment technical field, concretely relates to a kind of wire drawing machine reel tension self-adapting adjusting mechanism.The utility model provides a kind of wire drawing machine reel tension self-adapting adjusting mechanism, including reel body, rack and control unit, the rack top is symmetrically provided with guide slide rail, the both sides of reel body are slidably connected with guide slide rail by support bearing seat, and driving mechanism is rotatably connected between the support bearing seat and rack;The support bearing seat inside is equipped with tension detection unit for the radial tension of reel body in real time detection;The control unit is electrically connected with driving mechanism and tension detection unit respectively, and according to the signal control driving mechanism action of tension detection unit, drive support bearing seat moves along guide slide rail to adjust the relative distance between reel body and wire drawing die box.

The application relates to a method for rapidly preparing a porous Cu / Zn heterojunction electrocatalytic material and application. The method utilizes a dynamic hydrogen bubble template method to prepare the heterojunction electrocatalytic material, and the preparation is carried out under the condition of a higher cathode deposition current. The specific steps are as follows: firstly, copper sulfate, zinc sulfate and ammonium sulfate are dissolved in deionized water according to a certain ratio to serve as an electrodeposition solution. The electrodeposition is carried out at room temperature, the deposition condition is controlled by using a direct current power supply, a hydrophilic carbon paper is used as a substrate electrode, and the porous Cu / Zn heterojunction material is deposited for 30 seconds under the condition of a deposition current of-1.0 A. The preparation scheme can realize in-situ rapid preparation of the porous material, the loading is uniform and stable, the operation process of a relatively cumbersome hard template method is avoided, and the electrocatalytic carbon dioxide reduction preparation carbon monoxide performance is very high.

The utility model discloses a bridge construction protection device, including two groups of the load bearing seat of approaching bridge deck slab bridge side and a group of the load bearing plate of being able to move and insert between two groups of load bearing seat, the inside of two groups of load bearing seat has cavity respectively, a plurality of insert connection hole A is seted up on the load bearing plate, a plurality of insert connection hole B is seted up on the load bearing seat, and insert connection hole B with insert connection hole A position can be aligned, after the both ends of load bearing plate are movably placed in the cavity, through long foot bolt along insert connection hole B and insert into insert connection hole A, realize the fixation of load bearing plate in the cavity, the downside of load bearing seat is fixed with the curved support, and the upper portion and the middle portion position of curved support correspond respectively and install the up walking gyro wheel and the side walking gyro wheel. The present application can provide stable operation platform, support the flexible movement of the edge area and can cover two sides bridge deck slab construction demand simultaneously.

The invention relates to an organic compound, a mixture, a composition, an organic electronic device and a display panel. The chemical structural formula of the organic compound is as shown in the general formula (1): # imgabs0. The organic compound provided by the invention has relatively high electron transport performance and chemical structural stability, so that the luminous efficiency of the organic electroluminescent device can be improved, and the service life of the organic electroluminescent device can be prolonged.

The utility model discloses a telescopic and adjustable insulating tubular bus assembly, which relates to the technical field of buses and comprises a plurality of groups of bus bodies and a supporting tube, supporting seats are fixedly mounted on the outer ring of the supporting tube and used for supporting the plurality of groups of bus bodies to be circumferentially and equidistantly arranged around the central axis of the supporting tube, and the supporting seats are fixedly mounted on the outer ring of the supporting tube. The two ends of the supporting pipe are connected with clamping assemblies for positioning the bus bodies one by one through telescopic pipe fittings, and the telescopic pipe fittings are provided with adjusting pieces for controlling the distance between the telescopic pipe fittings and the ends of the supporting pipe. According to the utility model, the problems that the existing cables are not easy to tidy during laying, a plurality of cables are often overlapped together, the appearance is not attractive, the laying process is extremely influenced, the cables are not easy to place separately subsequently, and badness is easily caused are solved, and the problems that the actual supporting length of the bus assembly is inconvenient to fix, and the service life of the bus assembly is prolonged are further solved. And flexible adjustment according to the actual assembly environment of the bus assembly and the like is not convenient to carry out.