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36results about How to "Solve assembly and disassembly problems" patented technology

Electric telescopic antiskid chain for wheel

ActiveCN105196812AStrong jointAvoid loosening or slippingNon-skid devicesEngineeringMechanical engineering
The invention discloses an electric telescopic antiskid chain for a wheel, and belongs to the tire skid resistance technical field. The electric telescopic antiskid chain includes a plurality of groups of positioning assemblies, chain body assemblies and lifting assemblies; the positioning assemblies are arranged around the circumference of the tire and on the outer surface of a tire at intervals, each group of positioning assembly includes a plurality of linear-arrangement positioning piles, each positioning pile is sleevedly provided with a fixing ring, each fixing ring is symmetrically provided with a pair of second connection seats in the circumferential direction of the tire, and the second connection seats are connected with corresponding second connection seats on the adjacent positioning piles by second tensioning chains; the chain body assemblies are in interval arrangement with the positioning assemblies and are in movably installation with the second tensioning chains between the positioning assemblies; the lifting assemblies are arranged on the side wall of the tire and are in one-to-one correspondence with the chain body assemblies. The electric telescopic antiskid chain has the advantages that connection of the positioning assemblies with the tire is steady, loosening or detachment of the chain body assemblies can be effectively prevented, and the antiskid effect is significantly increased; the problem of troublesome dismantling and mounting of a conventional antiskid chain is solved; and the wear degree of the antiskid chain can be reduced.
Owner:殷兴

Passenger room underframe internal installation structure easy to dismount for urban rail vehicle

The invention discloses a passenger room underframe internal installation structure easy to dismount for an urban rail vehicle. The passenger room underframe internal installation structure easy to dismount for the urban rail vehicle comprises a floor installation base, cold-proof materials, aluminum honeycomb floors, floor cloth and floor pressing bars. The internal installation structure further comprises a profile installation base. The section of the profile installation base is in an L shape. The profile installation base comprises a high step and a low step and is installed at the end of a vehicle body underframe. An end electrical cabinet is fixed to the upper end face of the high step of the profile installation base. The aluminum honeycomb floor at the end is in lap joint with the low step of the profile installation base through the stepped lap joint surface of the aluminum honeycomb floor, and the other aluminum honeycomb floors are in lap joint in sequence through the stepped lap joint surfaces of the aluminum honeycomb floors. The section of each floor pressing bar is in an inverted J shape, and the curved walls of the floor pressing bars are pressed on a lateral wallboard. Compared with the prior art, the passenger room underframe internal installation structure easy to dismount for the urban rail vehicle has the beneficial effects that the installation ways of the lateral wallboard, the end electrical cabinet and the aluminum honeycomb floors in a door area are changed through the structure, the problem that dismounting and mounting of the vehicle body underframe are troublesome is solved, and using is extremely convenient and fast.
Owner:CRRC NANJING PUZHEN CO LTD

Disassembling device and method for intermediate oil seal of hydraulic steering machine

The invention discloses a disassembling device and method for the intermediate oil seal of a hydraulic steering machine. The disassembling method for the intermediate oil seal of the hydraulic steering machine comprises the following steps: an intermediate oil seal cutting tool assembly is loaded from the upper opening of a cylinder barrel and assembled with a cutting tool positioning block, the cylinder barrel is arranged on a intermediate oil seal disassembling machine frame, a cutting tool fixing member is connected with the upper end of the cutting tool assembly, and the cylinder barrel is vertically fixed on the center portion of the frame through a fixture; with the lifting of a jack, the cylinder barrel is lifted; the bottom cutter edge of the cutting tool of the cutting tool assembly cuts an oil seal rubber ring and an oil seal skeleton of the intermediate oil seal, a hand shank is rotated repeatedly and the jack is lifted, so that the cutting tool is allowed to rotatably cut so as to disassemble the intermediate oil seal. Under the action of the inner cone slope of the cutting tool, the oil seal skeleton rolls up, the diameter of the intermediate oil seal is reduced, thus the intermediate oil seal is easy to take out. According to the disassembling device and method for the intermediate oil seal of the hydraulic steering machine, the intermediate oil seal can be effectively disassembled from a cylinder barrel assembly without damaging the inner wall of the cylinder barrel, so that the old cylinder barrel can be used again after repair, and the production cost of the subsequent remanufacturing of the hydraulic steering gear is reduced.
Owner:SHANGHAI CAIAIFU STEERING SYST WUHAN CO LTD

Filter convenient to mount and dismount

The invention relates to the field of filters and in particular discloses a filter convenient to mount and dismount. Aiming at the problem that a conventional filter is inconvenient to mount and dismount, the invention discloses a scheme as follows: the filter consists of a first end cover, a second end cover and a filtering plate, wherein the first end cover and the second end cover are mounted in a sealed manner; a cavity is formed in the connecting part of the first end cover and the second end cover; the filtering plate is mounted inside the cavity; a first connecting tube and a second connecting tube are respectively connected with sides away from each other, of the first end cover and the second end cover; and a first moveable ring and a second moveable ring are respectively arrangedon circumferential side walls of the first connecting tube and the second connecting tube in a sliding sleeving manner. By adopting the filter, a conventional flange connection structure on a filtercan be replaced, then the filter can be conveniently mounted and dismounted, the cleaning time of the filtering plate in the filter can be shortened, the practicability of the filter is improved, meanwhile, the filtration efficiency of the filter can be effectively improved, and the filter is applicable to popularization.
Owner:湖南溢泰净水科技有限公司

A data recording system and method for an autonomous vehicle and a data collection device

A data recording system and method for an autonomous vehicle and a data collection device are disclosed. The system includes the data collection device and a user terminal. The data collection deviceincludes at least two input ports and at least one output port. At least one input port is connected to a first communication network segment between a slave computer and a vehicle and is used for acquiring vehicle driving data transmitted between the slave computer and the vehicle. At least one input port is connected to a second communication network segment between a host computer and the slavecomputer and is used for acquiring vehicle driving data transmitted between the slave computer and the host computer. The output port is connected to the user terminal and used for sending the acquired vehicle driving data to the user terminal. The user terminal is used for sending an instruction for setting the data collection device according to user demands and storing the vehicle driving datato a database. Configuration and adjustment can be performed for different vehicle types to adapt to data recording demands of different vehicle types so that flexibility is high, the development cost is high and operation is simple.
Owner:BEIJING TUSEN ZHITU TECH CO LTD

Anti-collision protection device for an alarm

The invention discloses an anti-collision protection device for an alarm, and aims at solving the problems that an existing alarm protection device is troublesome to disassemble and assemble and an alarm sound transmission is hindered. According to the technical scheme, the anti-collision protection device is characterized by comprising a bottom plate, a top plate, a plurality of fixed plates, a plurality of movable plates and an alarm, wherein the top plate is positioned right above the bottom plate, two supporting columns are fixedly connected between the top plate and the bottom plate, thealarm is fixedly connected with the top of the bottom plate, a plurality of protective fences are fixedly connected between the fixed plates and the movable plates, a plurality of fixing holes are formed in the top of the bottom plate at equal intervals, a mounting hole is formed in one side of the fixing holes, a limiting column is arranged in the mounting hole, and one end of the limiting columnextends to the outside of the bottom plate. The anti-collision protection device is reasonable in structure, ingenious in design and easy to operate, the problem that an existing alarm protection device is troublesome to disassemble and assemble and the alarm sound transmission exists is solved, and the anti-collision protection device is good in protection effect, easy to assemble and easy to popularize and use.
Owner:郑州卓可比电子科技有限公司

Device for data operation based on Internet innovation technology

The invention relates to the technical field of processor appliances and discloses a device for data operation based on Internet innovation technology. The device includes a base, wherein the upper end of a wire is connected with a slot frame; the slot frame is connected inside a sliding plate; a dustproof plate is disposed on the lower side of a counting device; a first spring is connected between an upper casing and the dustproof plate; a second spring is connected to the upper end of a cushion pad; a telescopic device is connected to the upper end of the second spring; and a slide bar is connected inside the telescopic device. By moving a rectangular key to the lower side of a rectangular slot, a detection hole is opened for detection. The upper casing pushes the slide bar to move on the telescopic device to reach the lowest point of the telescopic device. The upper casing is released, and the slide bar moves into the lower groove of an irregular groove so as to complete the installation. The can be counting device removed by pressing the upper casing again. Such structure achieves a purpose of easily installing and replacing the counting device, thereby solving the problem thata conventional counting device is uneasy to replace and uninstall and indirectly improving maintenance efficiency.
Owner:SHANGHAI TANGJI ADVERTISING CO LTD

Adjustable support device for bridge construction

The invention belongs to the field of bridge construction and particularly provides an adjustable support device for bridge construction. Aiming at the problems that the conventional support bracket is troublesome to disassemble and assemble and has large hidden safety hazards during disassembly and assembly, the following solution is provided: the adjustable support device comprises two bracket mechanisms mounted on left and right sides of a bridge column respectively, wherein a connecting piece is fixedly connected between the two bracket mechanisms; a limit clamping sleeve is embedded in the bridge column; a positioning groove located on the same vertical plane with the limit clamping sleeve is arranged on a column foundation of the bridge column; each bracket mechanism comprises a bottom plate and a worktable which are arranged oppositely, and the bottom plate is located below the worktable. According to the adjustable support device for bridge construction, a steel pipe support frame is not needed to be erected in the traditional way, vertical welding for fixing in air in the traditional way is not needed during assembly, embedded parts are not needed to be cut in air in the following disassembly process, so that disassembly and assembly burden of workers and the hidden safety hazards are reduced greatly, and the whole support device can be recycled and is quite environmentally friendly.
Owner:SHANDONG KEDA INFRASTRUCTURE CO LTD

A sliding support applied to bridge construction

The invention discloses a sliding bracket applied to bridge construction, which comprises a pair of rails with the same structure, a pair of moving mechanisms with the same structure and a pair of support mechanisms with the same structure, a pair of rails arranged in parallel, a pair of rails arranged in parallel, and a pair of rails with the same structure. The above-mentioned moving mechanism is assembled on a pair of said rails and a brake assembly is provided on them. The beneficial effect of the present invention is that the sliding support for bridge construction is simple in structure, easy to disassemble and assemble, and generally adopts a modular design. For the moving mechanism and the supporting and fastening mechanism, the moving mechanism is used to enhance the moving ability of the whole bracket, which is convenient for deployment, and solves the problem of troublesome disassembly and assembly of the existing bracket. The supporting mechanism is used for height adjustment to meet different construction height requirements, and The fastening mechanism can effectively support the column structures such as bridge piers, and the mounting seat of the supporting mechanism can be used as a conventional support, which greatly shortens the construction period and reduces the labor intensity of workers.
Owner:TAIZHOU UNIV

Fixing assembly for integrated outer wall installation construction

The invention discloses a fixing assembly for integrated outer wall installation construction, and relates to the technical field of integrated outer wall installation. The fixing assembly comprises an external wall panel and supporting plates, wherein the supporting plates are symmetrically arranged on two sides of one side face of the external wall panel in the vertical direction, and meanwhile,L-shaped mounting frames are symmetrically arranged on two sides of each of the upper end and the lower end of the other side face of the external wall panel; connecting holes are symmetrically formed in the upper end and the lower end of each supporting plate, each two horizontally-aligned connecting holes are in clearance fit with one same positioning rod, and two ends of each positioning rod are fixedly connected to two ends of a U-shaped fixing rod correspondingly; and rounded rectangular open slots are formed in the positions, on the outer sides of the supporting plates, of each positioning rod, and a limiting post is in clearance fit with the interior of each rounded rectangular open slot. Through the arrangement of U-shaped limiting rods, the positioning rods, a linkage rod, T-shaped limiting grooves, T-shaped limiting heads and inserting rods, the disassembly and assembly of an outer wall body and a hoisting device is convenient and rapid, the hoisting safety is high, the mounting of the outer wall body and a building is easier and faster, and thus the practicability is high.
Owner:界首市天瓴建筑工程有限公司

A self-driving vehicle data recording system and method, and data acquisition equipment

A data recording system and method for an autonomous vehicle and a data collection device are disclosed. The system includes the data collection device and a user terminal. The data collection deviceincludes at least two input ports and at least one output port. At least one input port is connected to a first communication network segment between a slave computer and a vehicle and is used for acquiring vehicle driving data transmitted between the slave computer and the vehicle. At least one input port is connected to a second communication network segment between a host computer and the slavecomputer and is used for acquiring vehicle driving data transmitted between the slave computer and the host computer. The output port is connected to the user terminal and used for sending the acquired vehicle driving data to the user terminal. The user terminal is used for sending an instruction for setting the data collection device according to user demands and storing the vehicle driving datato a database. Configuration and adjustment can be performed for different vehicle types to adapt to data recording demands of different vehicle types so that flexibility is high, the development cost is high and operation is simple.
Owner:BEIJING TUSEN ZHITU TECH CO LTD

Overflow protection structure of dish washer and dish washer

The invention discloses an overflow protection structure of a dish washer and the dish washer. The overflow protection structure comprises an inner container, a bottom plate communicating with the inner container through a water collecting groove and a switch assembly arranged on the bottom plate and connected to a controller. The bottom plate comprises a bottom plate body and a base detachably connected with the bottom plate body. Flow guide grooves communicating with each other are formed in the bottom plate body and the base, and one ends of the flow guide grooves communicate with the watercollecting groove. When a breakdown occurs to the inside of the bottom plate of the dish washer, only the bottom plate body needs to be disassembled, the inside of the bottom plate can be maintainedand repaired, and the condition that a left side plate and a right side plate need to be disassembled when an existing integral base is adopted is avoided. In the mounting processing, the bottom platebody can be connected to the base only by clamping an elastic buckle into a clamping table, and the problem that the bottom plate of an existing dish washer is troublesome in disassembling and assembling is solved. According to the dish washer, the overflow protection structure of the dish washer is adopted, water in the inner container is prevented from overflowing out of the dish washer, the life and the property safety of a user is guaranteed, and the production cost of the dish washer is lowered.
Owner:QINGDAO HAIER DISHWASHER

Squeezing and rubbing dual high window reciprocal drum washing machine

The invention relates to a squeezing and rubbing dual high window reciprocal drum washing machine. The biggest and most obvious feature of the machine lies in that a reciprocal rotary conjoined dual drum assembly used is parallely arranged in the horizontal direction at the upper middle part of a machine body, stably hoisted on two sides of a central supported cable-stayed bridge type hanger fixedto a transverse center position of a mounting platform by the hanger, and hinged to and positioned on the mounting platform through plunger damping rods on left and right sides of the bottom of the conjoined dual drum assembly. The main features and advantages of the machine that can best reflect the advantages of the product are: efficient high-quality washing principle and washing method of 'centrifugal squeezing, rubbing and washing for dirt removal, rinsing and dehydration' completely different from 'squeezing and rubbing' of high imitated artificial washing of washing methods of varioustraditional washing machines are used, and left and right 'small-diameter, large-depth, easy-balance and weak vibrating drums' are used for reciprocal rotation, so that partial vibration of a low vibrational energy level can be further offset or greatly reduced; with the use of a brand-new original center-supported conjoined dual drum hanging and hoisting method, the moving parts in the body are completely contactless with the vertical surface and the top surface of an outer case body, thereby ensuring zero vibration of a machine case. The machine also has the advantages of high cleanliness, minimal wear rate, light weight, convenient and safe operation, health care, long service life and the like.
Owner:张建华

A device for computing data based on Internet innovative technology

The invention relates to the technical field of processor appliances and discloses a device for data operation based on Internet innovation technology. The device includes a base, wherein the upper end of a wire is connected with a slot frame; the slot frame is connected inside a sliding plate; a dustproof plate is disposed on the lower side of a counting device; a first spring is connected between an upper casing and the dustproof plate; a second spring is connected to the upper end of a cushion pad; a telescopic device is connected to the upper end of the second spring; and a slide bar is connected inside the telescopic device. By moving a rectangular key to the lower side of a rectangular slot, a detection hole is opened for detection. The upper casing pushes the slide bar to move on the telescopic device to reach the lowest point of the telescopic device. The upper casing is released, and the slide bar moves into the lower groove of an irregular groove so as to complete the installation. The can be counting device removed by pressing the upper casing again. Such structure achieves a purpose of easily installing and replacing the counting device, thereby solving the problem thata conventional counting device is uneasy to replace and uninstall and indirectly improving maintenance efficiency.
Owner:SHANGHAI TANGJI ADVERTISING CO LTD

Sliding support applied to bridge construction

The invention discloses a sliding support applied to bridge construction. The sliding support comprises a pair of rails of the same structure, a pair of moving mechanisms of the same structure and a pair of supporting mechanisms of the same structure. The pair of rails are arranged in parallel; the pair of moving mechanisms are assembled on the pair of rails, and braking assemblies are arranged onthe pair of moving mechanisms. the sliding support has the following beneficial effects: the sliding support for bridge construction is simple in structure, is conveniently assembled and disassembledand generally employs the modular design, the whole device is divided into a moving mechanism and a supporting and fastening mechanism. The moving capability of the whole support is enhanced by utilizing the moving mechanism, the deployment is convenient, and the problem that an existing support is troublesome to disassemble and assemble is solved. The sliding support is used for achieving the purpose of height adjustment so as to adapt to different construction height requirements, the fastening mechanism can effectively support stand column structures such as piers of a bridge, the installation base of the supporting mechanism can be used as a conventional support, the construction period is greatly shortened, and the labor intensity of workers is relieved.
Owner:TAIZHOU UNIV

Filtration device of fresh air ventilation system

The invention discloses a filtration device of a fresh air ventilation system. The filtration device aims to solve the problem that an existing fresh air ventilation system filtration device is troublesome to disassemble and assemble, according to the following scheme, the filtration device comprises a pipeline and a filter, the filter is located inside the pipeline, two clamping holes are formedin the inner wall of each of the two sides of the pipeline, the filter is composed of an outer frame and a filter screen, two first spring holes are formed in each of the two sides of the outer frame,first springs and clamping blocks are arranged inside the first spring holes, one ends of the clamping blocks extend into the clamping holes, limiting holes are formed in one sides of the clamping blocks, first adjusting grooves are formed in one sides of the first spring holes, the first adjusting grooves communicate with the outside of the outer frame, and first adjusting columns are fixed to the sides, close to the first adjusting grooves, of the clamping blocks. The filtration device of the fresh air ventilation system is reasonable in structure, ingenious in design and easy to operate, solves the problem that the existing fresh air ventilation system filtration device is troublesome to disassemble and assemble, reduces the cleaning difficulty of the filter screen, and is easy to popularize and use.
Owner:SHAANXI KERUIDA ENVIRONMENTAL PROD TECH CO LTD

Squeeze and rub type double-height window reciprocal drum washing machine

The invention relates to a squeezing and rubbing dual high window reciprocal drum washing machine. The biggest and most obvious feature of the machine lies in that a reciprocal rotary conjoined dual drum assembly used is parallely arranged in the horizontal direction at the upper middle part of a machine body, stably hoisted on two sides of a central supported cable-stayed bridge type hanger fixedto a transverse center position of a mounting platform by the hanger, and hinged to and positioned on the mounting platform through plunger damping rods on left and right sides of the bottom of the conjoined dual drum assembly. The main features and advantages of the machine that can best reflect the advantages of the product are: efficient high-quality washing principle and washing method of 'centrifugal squeezing, rubbing and washing for dirt removal, rinsing and dehydration' completely different from 'squeezing and rubbing' of high imitated artificial washing of washing methods of varioustraditional washing machines are used, and left and right 'small-diameter, large-depth, easy-balance and weak vibrating drums' are used for reciprocal rotation, so that partial vibration of a low vibrational energy level can be further offset or greatly reduced; with the use of a brand-new original center-supported conjoined dual drum hanging and hoisting method, the moving parts in the body are completely contactless with the vertical surface and the top surface of an outer case body, thereby ensuring zero vibration of a machine case. The machine also has the advantages of high cleanliness, minimal wear rate, light weight, convenient and safe operation, health care, long service life and the like.
Owner:张建华

Electric telescopic snow chains for wheels

The invention discloses an electric telescopic antiskid chain for a wheel, and belongs to the tire skid resistance technical field. The electric telescopic antiskid chain includes a plurality of groups of positioning assemblies, chain body assemblies and lifting assemblies; the positioning assemblies are arranged around the circumference of the tire and on the outer surface of a tire at intervals, each group of positioning assembly includes a plurality of linear-arrangement positioning piles, each positioning pile is sleevedly provided with a fixing ring, each fixing ring is symmetrically provided with a pair of second connection seats in the circumferential direction of the tire, and the second connection seats are connected with corresponding second connection seats on the adjacent positioning piles by second tensioning chains; the chain body assemblies are in interval arrangement with the positioning assemblies and are in movably installation with the second tensioning chains between the positioning assemblies; the lifting assemblies are arranged on the side wall of the tire and are in one-to-one correspondence with the chain body assemblies. The electric telescopic antiskid chain has the advantages that connection of the positioning assemblies with the tire is steady, loosening or detachment of the chain body assemblies can be effectively prevented, and the antiskid effect is significantly increased; the problem of troublesome dismantling and mounting of a conventional antiskid chain is solved; and the wear degree of the antiskid chain can be reduced.
Owner:殷兴

Novel numerical control punching and shearing tool grinding clamp

PendingCN113696001AReduce grinding timeHigh grinding precisionOther manufacturing equipments/toolsGrinding work supportsGrindingEngineering
The invention discloses a novel numerical control punching and shearing tool grinding clamp which comprises a main clamping plate and an auxiliary clamping plate. The main clamping plate is provided with a positioning module and guide rail threaded holes, threads are arranged at the tail ends of guide rails, and the guide rails are fixed to the guide rail threaded hole through the tail end threads. According to the scheme, compared with a traditional numerical control punching and shearing tool grinding clamp, the tool axial rotation adjusting and angle adjusting functions are added, the tool setting problems during dismounting and mounting can be effectively solved, a tool can be ground in all directions through only one time of tool setting, multiple times of tool dismounting are not needed, the grinding time is saved, multiple times of tool setting are not needed, the grinding precision is improved, operation is easy, and use is convenient; and compared with the traditional technology, vibration generated during grinding can be greatly relieved, the grinding precision is improved, the axial rotation adjusting function is added in the scheme, the problem that tool setting cannot be avoided during dismounting and mounting when the angle is changed in the single direction is solved, and wide application and popularization can be achieved.
Owner:耿新珂

A dismantling device and dismantling method for an intermediate oil seal of a hydraulic steering machine

The invention discloses a disassembling device and method for the intermediate oil seal of a hydraulic steering machine. The disassembling method for the intermediate oil seal of the hydraulic steering machine comprises the following steps: an intermediate oil seal cutting tool assembly is loaded from the upper opening of a cylinder barrel and assembled with a cutting tool positioning block, the cylinder barrel is arranged on a intermediate oil seal disassembling machine frame, a cutting tool fixing member is connected with the upper end of the cutting tool assembly, and the cylinder barrel is vertically fixed on the center portion of the frame through a fixture; with the lifting of a jack, the cylinder barrel is lifted; the bottom cutter edge of the cutting tool of the cutting tool assembly cuts an oil seal rubber ring and an oil seal skeleton of the intermediate oil seal, a hand shank is rotated repeatedly and the jack is lifted, so that the cutting tool is allowed to rotatably cut so as to disassemble the intermediate oil seal. Under the action of the inner cone slope of the cutting tool, the oil seal skeleton rolls up, the diameter of the intermediate oil seal is reduced, thus the intermediate oil seal is easy to take out. According to the disassembling device and method for the intermediate oil seal of the hydraulic steering machine, the intermediate oil seal can be effectively disassembled from a cylinder barrel assembly without damaging the inner wall of the cylinder barrel, so that the old cylinder barrel can be used again after repair, and the production cost of the subsequent remanufacturing of the hydraulic steering gear is reduced.
Owner:SHANGHAI CAIAIFU STEERING SYST WUHAN CO LTD

Building waterproof roll processing device

The invention discloses a building waterproof coiled material processing device, and relates to the technical field of building waterproof coiled material processing devices, in particular to a building waterproof coiled material processing device which comprises a mortar outer frame, a fixing plate is fixedly mounted on the right surface of the mortar outer frame, and a first servo motor is fixedly mounted on the upper surface of the fixing plate; a driving roller is fixedly installed on an output shaft of the first servo motor, and the outer surface of the output shaft of the first servo motor is fixedly sleeved with a first rotating wheel. According to the building waterproof roll processing device, a roll is located below an anti-skid roller by lifting a mounting frame, at the moment, the mounting frame can be limited through elastic force provided by a limiting spring, the roll is limited through the anti-skid roller, the roll subjected to slurry soaking is prevented from slipping, and the service life of the roll is prolonged. And meanwhile, the anti-skid roller can be separated from and make contact with the coiled material by compressing the limiting spring, and the problem that a traditional fixed limiting roller is troublesome to disassemble and assemble is solved.
Owner:安徽朝晖防水材料有限公司
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