2762results about How to "Achieve disassembly" patented technology

The invention provides a thin-wall sliding sleeve disassembling fixture. The thin-wall sliding sleeve disassembling fixture comprises a puller nut and a puller screw. The puller screw is in threaded connection with the puller nut. One end of the puller screw is provided with a clamping jaw. The puller screw is in threaded connection with the clamping jaw. A bracket and a hydraulic system are installed between the puller nut and the clamping jaw. The bracket and the hydraulic system are sheathed on the puller screw. The bracket is adjacent to the clamping jaw. The hydraulic system is adjacent to the puller nut. Through controlling the hydraulic system to boost pressure and reduce pressure, the disassembly of a thin-wall sliding sleeve can be realized. The thin-wall sliding sleeve disassembling fixture is small in volume, light in weight, smooth and steady in movement, and safe and convenient in operation, and capable of preventing the deformation of the thin-wall sliding sleeve and thescratching of a hole wall in an disassembling process.

The invention discloses a drilling clamp for an oil hole of a bent axle in an adjustable position. The drilling clamp comprises a clamping mechanism and a position adjusting mechanism, wherein the clamping mechanism comprises N-claw chuck and a rotary handle, wherein the N-claw chuck comprises claws and a chuck body; the position adjusting mechanism comprises a clamp body, a slide block and a guide plate; the clamp body is fixedly connected with the chuck body; at least two supporting rods are symmetrically arranged at the bottom of the clamp body; the bottoms of the supporting rods are connected with the slide block; two guide grooves are symmetrically arranged on the upper surface of the guide plate; the size of the guide grooves is matched with the size of the slide block; and under the sliding of the slide block in the guide grooves, the clamping mechanism is driven by the supporting rods to linearly move on the guide plate. The drilling clamp for the oil hole of the bent axle provided by the invention can be used for processing the oil holes in different types, sizes, positions and angles, without exchanging a clamp.

The invention provides a battery disassembling and assembling mechanism for an electric automobile. By means of coordination and matching of the electric automobile, an automobile parking platform and a lifting mechanism, a signal transmitting device and a signal receiving device are utilized to locate the working position of the electric automobile accurately in the electric automobile location process. The problem that a battery of the electric automobile is complex to replace is solved due to the fact that a lifting machine on a lifting platform is used for quickly replacing the battery of the electric automobile. Meanwhile, the working efficiency of battery replacement is improved. A battery disassembling and assembling method for the electric automobile is further provided.

The invention relates to a drilling mechanism and a drill loader. The drilling mechanism comprises a drilling arm and a bracket mounted on the drilling arm, a sliding frame is slidably arranged on the bracket, a sliding frame telescopic oil cylinder is arranged in the sliding frame, a positioning tip is fixed at one end of the sliding frame telescopic oil cylinder, the other end of the sliding frame telescopic oil cylinder is fixed in the sliding frame, and a brazing tool is fixed on the positioning tip. The telescopic oil cylinder is arranged in the sliding frame, and after the sliding frame telescopic oil cylinder extends, the long brazing tool can be mounted on the positioning tip on the end portion of the sliding frame to meet requirements on deep-hole drilling in engineering construction; after the sliding frame telescopic oil cylinder shortens, the length of the sliding frame can be greatly reduced, requirements on drilling of a top anchor rod hole by erecting the sliding frame in limited tunnel space can be met, drilling range is widened, and practicability is improved.

The invention belongs to the technical field of tunneling construction of shield tunneling machines for tunnels, particularly relates to a device for in-tunnel demounting of a screw conveyer of the shield tunneling machine and mainly provides a novel method and a novel device for demounting of a master drive of the shield tunneling machine. In order to realize in-tunnel mounting and demounting of the master drive of the shield tunneling machine and guarantee safety and effectiveness in in-tunnel assembly, maintenance and disassembly of the master drive of the shield tunneling machine, a device for in-tunnel demounting of the master drive of the shield tunneling machine is provided and comprises a shield, the master drive, the screw conveyer and a beam shaped as a Chinese character 'mi' meaning rice, the master drive is arranged at the front end of the shield, and the beam is arranged in the shield. A plurality of lifting lugs are welded to the beam, a lifting base point is arranged above the tail of the screw conveyer, and the lifting lugs on the beam and lifting lugs on the screw conveyer are connected. The method and the device for in-tunnel demounting of the master drive of the shield tunneling machine have the advantages that in-tunnel mounting and demounting of the master drive are realized effectively, in-tunnel mounting, demounting and maintenance of the master drive are facilitated, construction efficiency is improved, and hoisting and mounting of large structural parts can be realized safely.

The invention discloses a stamping device capable constantly stamping. The device comprises a bottom plate, two symmetrically arranged upright columns are fixedly connected with the upper side wall ofthe bottom plate, the side walls, close to each other, of the two upright columns are fixedly connected with a top plate, a fixing plate is fixedly connected with the part between the two upright columns located below the top plate, a second motor is fixedly connected with the upper side wall of the bottom plate, a threaded rod is fixedly connected with the output end of the second motor, the upper end of the threaded rod is in threaded connection with a threaded sleeve, a supporting plate is fixedly connected with the upper end of the threaded sleeve, the supporting plate is connected with the bottom plate through two groups of supporting mechanisms, the supporting mechanisms are distributed on the two sides of the second motor, and a rotary mechanism is arranged on the upper side wall of the supporting plate. By means of the device, constant stamping on documents and certificates can be achieved, fatigue caused by manually stamping is prevented, and the working efficiency is improved while the labor intensity is reduced.

The invention discloses an automatic PCB detaching, overturning and pasting integrated machine which comprises an equipment body, a machine hood arranged on the equipment body in a sleeved mode and a rack for supporting the equipment body. The equipment body comprises a conveying mechanism, a large gantry mechanism, small gantry mechanisms and automatic feeding and discharging mechanisms. At least two working stations are arranged on the large gantry mechanism and the small gantry mechanisms are arranged on one side of the large gantry mechanism in parallel. The small gantry mechanisms and the large gantry mechanism are matched for automatically detaching, overturning and pasting a PCB again. The automatic feeding and discharging mechanisms are arranged on one side below the conveying mechanism in parallel and used for conveying cover plates or carriers to all the working stations. According to the automatic PCB detaching, overturning and pasting integrated machine, unloading of an old carrier and cover plates, overturning of the PCB and repeated pasting of the PCB and a new carrier are performed automatically and the machining efficiency of the PCB is improved. Meanwhile, labor force and labor cost are saved, cost is reduced and in addition, automatic feeding and discharging are achieved, especially materials can be automatically replaced in a non-stopping state.

The invention discloses a platform for disassembling and assembling a disc hob used in the field of tunnel engineering, which comprises two parts, namely a hob end cover disassembly and assembly device and a bearing outer ring disassembly and assembly device. The bottom end of a hydraulic cylinder of the hob end cover disassembly and assembly device is hinged with a hydraulic supporting seat fixed on a base of the platform, a ratchet rod is hinged with a piston rod of the hydraulic cylinder, the other end of the ratchet rod is hinged to a cutter shaft of the hob placed in a positioning hole, a pawl is hinged to one pin shaft at the middle part of the ratchet rod, the pawl is engaged with teeth of a ratchet, and four positioning columns of the ratchet are placed in four holes of an end cover. The bearing outer ring disassembly and assembly device is characterized in that the hydraulic cylinder is fixed in the middle of a portal crossbeam, the lower end of the hydraulic cylinder is provided with a pressure plate, and a positioning ring is welded to the base of the platform and is concentric with the hydraulic cylinder. A bearing pressing-out plate and a bearing pressing-in barrel are used during pressing out and pressing in respectively. The platform device is simple and can be convenient to implement the disassembly and assembly of the disc hob.

The invention relates to a vertical roller mill hydraulic system, which comprises a plurality of grinding roll clamping hydraulic cylinders, a plurality of accumulator groups, a hydraulic station and connecting pipelines among the grinding roll clamping hydraulic cylinders, the accumulator groups and the hydraulic station, wherein the hydraulic station comprises an oil tank device, an oil pump device, a grinding roll clamping control valve group and connecting pipelines among the oil tank device, the oil pump device and the grinding roll clamping control valve group; a feedline of the oil pump device is connected with an inlet of the grinding roll clamping control valve group; an oil pump motor supplies oil for the grinding roll clamping control valve group; an outlet of the grinding roll clamping control valve group is connected with piston rod cavities of the grinding roll clamping hydraulic cylinders and the accumulator groups; rodless cavities of the grinding roll clamping hydraulic cylinders are connected with the grinding roll clamping control valve group through a plurality of oil return pipes; the grinding roll clamping control valve group controls the telescoping of piston rods of the grinding roll clamping hydraulic cylinders through a plurality of electromagnetic directional valves; and the accumulator groups absorb the vibration of the grinding roll clamping hydraulic cylinders respectively. The vertical roller mill hydraulic system solves the problem of loaded pressure boost of the system and improves the service life of grinding rolls and grinding discs and the maintenance efficiency.

The invention provides a connecting device, a fixing piece, LED display panels and an LED display system. The connecting device comprises connecting pieces, wherein each connecting piece comprises a first casing, locking balls and a first elastic piece; the first casing is provided with a first accommodating cavity, the first end of the first casing is connected to the back side of each mounted component, and the second end of the first casing is provided with an insertion hole, and the first accommodating cavity comprises a shrinkage part arranged at the second end of the first casing, and the shrinkage part gradually extends in a contracting way in the direction from the first end to the second end of the first casing; the locking balls are arranged in the first accommodating cavity; the first elastic piece is arranged in the first accommodating cavity, the first end of the first elastic piece is propped against the first end of the first casing, and the second end of the first elastic piece is propped against the locking balls, and the locking balls are in the shrinkage part under the action of the first elastic piece; the fixing piece comprises a positioning pin; and clamping grooves matched with the locking balls of the connecting device are formed in the side wall of the positioning pin. According to the invention, the connecting device can be mounted and dismounted at the front sides of the mounted components, and the mounted components are not damaged.

The invention discloses an angle-adjustable crankshaft oil hole drilling clamp which comprises a clamping mechanism and an angle adjusting mechanism. The clamping mechanism comprises an N-claw chuck and a rotating handle. The N-claw chuck comprises clamping claws and a chuck body. The angle adjusting mechanism comprises a supporting base, an angle adjusting gear and a guiding plate. A base bolt hole is arranged on the supporting base, a gear bolt hole is arranged at the center of the angle adjusting gear, a guiding plate bolt hole is arranged on the guiding plate, and a fastening bolt penetrates through the guiding plate bolt hole, the gear bolt hole and the base bolt hole sequentially to fixedly connect the guiding plate and the angel adjusting gear with the supporting base. The angle adjusting gear drives the guiding plate to rotate on the supporting base, and the upper surface of the guiding plate is connected with the bottom of the chuck body. The crankshaft oil hole drilling clamp can machine oil holes with different angles without replacing clamps.

The invention discloses a concrete transfer pump comprising a main oil cylinder, a concrete cylinder and a water tank arranged between the main oil cylinder and the concrete cylinder; the main oil cylinder is internally provided with a main piston connected with a concrete piston arranged in the concrete cylinder through a main piston rod, and the main piston drives the concrete piston to do reciprocating motion under the action of hydraulic oil in the main oil cylinder; the end part of the main oil cylinder is also provided with a multi-stage oil cylinder which limits the motion stroke of the main piston by a way of supporting against the main piston; and the motion stroke of the main piston is shifted between a working stroke and a dismantling stroke through the protrusion or retraction of the multi-stage oil cylinder. In the embodiment, when the concrete piston of the concrete transfer pump is maintained, the concrete piston can be directly withdrawn to the water tank through retracting the multi-stage oil cylinder so as to be dismantled with simple process and short time; meanwhile, the concrete transfer pump has compact whole structure and small size.

The invention discloses a publicity column for human resources management, which includes a base, two fixing rods are fixedly connected to the upper surface of the base, and the opposite surfaces of the two fixing rods are respectively fixedly connected to the left and right side surfaces of the motor body, so that The output shaft of the motor is fixedly connected with a threaded column, and the outer wall of the threaded column is threadedly connected with a threaded cap, and the left and right sides of the threaded cap are respectively fixedly connected with the opposite surfaces of the two connecting rods, and the tops of the two connecting rods All are fixedly connected with the lower surface of the movable plate, the lower surface of the movable plate is fixedly connected with the upper surface of the base through two third telescopic rods, and the upper surface of the movable plate overlaps with the lower surface of the electronic display screen. The human resource management bulletin board realizes the disassembly of the electronic display screen through the joint action of the electric push rod, the fixed block, the first spring, the first telescopic rod, the second spring, the second telescopic rod, the pulley and the friction pad. It is convenient for the maintenance of the electronic display screen and brings convenience to the workers.

The invention discloses a bacteria drug-resistance detection system and an operation method thereof. The system comprises a drug sensitive test inoculation instrument, drug sensitive test image acquisition conversion equipment, a drug sensitivity detection kit and a bacterial strain culture device. A medium is arranged in the drug sensitivity detection kit. The drug sensitive test inoculation instrument is used for inoculating a bacterial strain into the drug sensitivity detection kit. The bacterial strain culture device provides a growth environment for the bacterial strain in the drug sensitivity detection kit. The drug sensitive test image acquisition conversion equipment is used for acquiring and converting images of the bacterial strain in the drug sensitivity detection kit. Management software is arranged in the drug sensitive test image acquisition conversion equipment, and the management software is connected to the network. With combination of online and offline, clinical medication is directly guided. The system meets on-site detection requirements, is convenient for data analysis and decision-making for a farm, a veterinary medicines factory and an administrative department, is suitable for current high-level drug resistance situation in our country, and satisfies the need of quantitative networked monitoring of drug resistance. A broth dilution method and an agar dilution method are both considered. The system meets different requirements of large-scale monitoring and scattered sample detection.

The invention discloses a server system. The system comprises a case, a power conversion plate which is located in the case and is connected with an external power supply, an installing framework arranged on one side of the case, and a plurality of hard disc modules which are detachably arranged in the installing framework and electrically connected with the power supply conversion plate, a plurality of sliding grooves are formed in the two side walls of the installing framework, a plurality of installing pins which are matched with the sliding grooves are arranged on the outer walls of the two sides of each hard disc module, and gaps which are used for the installing pins to pass through are formed in one end of each sliding groove. According to the server system, through the cooperativesliding of the installing pins on the hard disc modules and the sliding grooves formed in the installing framework, the installing, dismantling and replacing of the hard disc modules in the installingframework can be conveniently achieved. The normal operation of the server in the process can be maintained, the rest of the hard disc modules are not affected in the operation process, and hot-plugged operation is achieved.

The invention discloses a portable electric equipment display device, which comprises a casing, a first bearing is clamped on the lower surface of the inner wall of the casing, and a first rotating shaft is sleeved on the inner surface of the first bearing. The outer surface of the first rotating shaft is clamped with a first bevel gear, the first bevel gear meshes with the second bevel gear, the inner surface of the second bevel gear is clamped with a second rotating shaft, and the outer surface of the second rotating shaft The surface is sleeved with a second bearing, and the second bearing is clamped on the right side of the inner wall of the housing. The right end of the second rotating shaft is fixedly connected to the left end of the crank, and the top end of the first rotating shaft is connected to the threaded post. Fixed connection at the bottom. The easy-to-carry power equipment display device realizes the disassembly of the present invention, and the person lifts the support plate and the casing respectively through the two first handles and the two second handles, and places the support plate and the casing on the transportation tool, This makes the present invention more convenient to carry.

The invention provides a front maintenance display screen with a six-directional adjusting function and a display device. The display screen comprises a box body structure and a first connection structure. The box body structure comprises a front box body, a back box body and a display module. The display module is installed on the front box body. The front box body is connected with the back box body. The first connection structure connects the front box body and the back box body, comprises a magnet and can be operated through magnetic force. According to the invention, a problem that operation is quite complex during front maintenance on the front maintenance display screen in the prior art is solved.

The invention provides a dismountable skeleton tool, and a dismounting device and a dismounting method for dismounting the tool. The dismountable skeleton tool comprises two cover plates, a hub and screws, wherein the hub is formed by splicing two semicircular hollow cylindrical shells between which a gap is formed; the two cover plates are fixedly connected with the axial end faces of the two sides of the hub through the screws respectively; a group of grooves is symmetrically formed in the diameter directions of inner rings of the two cover plates. The dismounting device comprises an outer protective cover, sliding fixing columns, sliding clamping pieces, a fixed platform, a rotating lifting cylindrical table, a bearing and a motor. When the screws are dismounted, the two sliding fixing columns can be clamped into the grooves in the inner rings of the two cover plates; when the cover plates are dismounted, the sliding clamping pieces can be clamped into the grooves in the inner rings of the two cover plates twice, the fixed platform and the outside are fixedly connected and kept fixed, and the bearing is driven by the motor to rotate, thereby driving the rotation and lifting of the rotating lifting cylindrical table to sequentially dismount the two cover plates.

The invention relates to a roasting cigarette utensil. The roasting cigarette utensil comprises a body, a heating assembly and a sliding knob; a cavity is formed in the body, and the heating assemblyis installed in the cavity; an inserting hole for a cigarette body to be inserted in is formed in the heating assembly; the sliding knob is installed on the body, is matched with the heating assembly,and has a second journey for pushing the heating assembly out of the cavity. The sliding knob slides to different positions, and can push out the cigarette body and the heating assembly, the cigarette body can be conveniently replaced, disassembling between the heating assembly and power supply assemblies such as a power supply of a body can also be conveniently achieved, the heating assembly canbe conveniently replaced, and the inside of the heating assembly can be conveniently cleaned.

The invention discloses an ultrahigh vacuum low-temperature sample table and belongs to the field of vacuum device instruments. The ultrahigh vacuum low-temperature sample table comprises a mechanicallift-pulling device, a low-temperature lengthened pipe, a sliding electrode, a connect-fixing cap, a sample table body and a detachable shielding cover, wherein the mechanical lift-pulling device isupward fixed to a low-temperature cooling head through screws, the mechanical lift-pulling device is downward fixed to the low-temperature lengthened pipe through screws, the low-temperature lengthened pipe is a hollow anaerobic copper pipe and is downward fixed to the sliding electrode through screws, the sliding electrode is fixed to the connect-fixing cap through screws, the connect-fixing capis movably connected with the sample table body below the connect-fixing cap, and the sample table body is fixed to the detachable shielding cover through screws. Mechanical, thermotical and electrical connection and dismounting of the sample table in vacuum can be achieved, meanwhile the sample plane of the sample table can rotate and change temperature, and sample measurement can be performed indifferent directions.

The invention relates to a mine steel wire rope automatic collecting device with a rope discharging function. The mine steel wire rope automatic collecting device is characterized in that the power of an anti-explosive motor is decelerated by a decelerator and is outputted, a torque sensor is arranged, and the power is transferred to a driving shaft to realize the coiling action of a rope disc; a support shaft is fixed by a parallel four-bar linkage mechanism, the parallel four-bar linkage mechanism is rotated to quickly move the support shaft, and the space is provided for the detachment of the rope disc; by adopting the automatic rope discharging device, and also additionally arranging a steel wire rope torque releasing assembly, the steel wire rope is sequentially discharged, and the torque of a steel wire rope is released when the steel wire rope is cut; by arranging an electric control cabinet, the signals of a rotation speed sensor and the torque sensor are fed back, so that the functions of automatic speed adjusting and constant-torque recycling of the steel wire rope are realized; the problems of low manual recycling efficiency of the steel wire rope, large labor investment, and poor safety are solved.

The invention discloses an installation-facilitating LED lamp which comprises a lamp holder mounted in an indoor roof and an LED lamp main body inserted into the lamp holder for cooperative connection, wherein an insertion block is arranged at the middle of the top end surface of the LED lamp main body; an electrifying slot is formed in the middle of the top end surface of the insertion block; two locking slots are symmetrically formed in the left and right end surfaces of the insertion block; an insertion slot cooperatively connected with the insertion block is formed in the bottom of the lamp holder; two locking sliding chutes are symmetrically formed in the left and right end walls of the insertion slot respectively; and a driving assembly containing cavity is formed in a position, which is located above the insertion slot, in the lamp holder. The installation-facilitating LED lamp disclosed by the invention is simple in overall structure and safe and reliable in operation; the installation and replacement efficiency of the LED lamp is greatly improved, so that occurrence of an electric shock accident is effectively avoided during installation and replacement of the LED lamp, and the safety of an installer is guaranteed; meanwhile, the whole device is easy and convenient to operate; the LED lamp can be automatically installed and removed; and the service life is prolonged.

The invention relates to mixing equipment, in particular to a material mixer and aims to solve the technical problem of the material mixer that a mixing rod can be detached and the height of a mixing blade can be changed. In order to solve the technical problem, the material mixer comprises a base plate, a moving plate, a moving block, a first installation block, a second installation block, a cylinder, a mixing barrel, a column, a clamping plate, a machine head, a mixing shaft, a mixing rod and the like; a first groove is formed in the top in the base plate, the moving plate is in sliding connection to the inside of the first groove, the moving block is connected to the left end of the moving plate in a screw fastening manner, the first installation block is connected to the left side of the top of the moving plate by a screw, and the second installation block is connected to the right side of the top of the moving plate by a screw. The mixer can mix the material, the mixing rod of the mixer can be detached, and cleaning and replacement of the mixing rod are convenient.

Provided is a precast constructional double-dovetailed steel-concrete combined beam in adoption of stud connection. The combined beam comprises precast concrete plates, wherein the precast concrete plates and a steel beam are in assembly connection through embedded shearing-resistant studs; the section, under flanges, of the steel beam is tightly connected with the steel beam through bolts; the precast concrete plates positioned at the left and right side are connected by inserting double-dovetailed plug connectors into prepared holes of wedged steel components; prepared holes of a precast thin-wall steel plate stay in accordance with the ones of the steel beam; the shearing-resistant studs penetrate through the prepared holes of the precast thin-wall steel plate in a mode of spot welding to further reinforce the connection between the shearing-resistant studs and the prepared holes of the precast thin-wall steel plate, and constitute a connector. All components of the precast constructional double-dovetailed steel-concrete combined beam adopt on-site assembly connection to reduce welding and template engineering, thereby shortening working periods, increasing efficiency of modern constructional industrialization assembly, achieving procedures of detachable installation of fabricated beams and slabs, and embodying novel construction ideas of energy-saving environmental-friendly construction nowadays.

The invention relates to a closing assembly (33) for closing the gap (28) remaining between the first and last blade (12a, 12b) of a blade ring that is inserted into a peripheral groove (10) of turbomachinery. Said assembly comprises at least two parts (30, 32), each of which can be hooked onto projections (20, 22) that form an undercut (24, 26) in said peripheral groove (10) and comprises a securing element (36), which secures the parts (30, 32) from becoming detached from the peripheral groove (10). To provide a closing assembly (33) for closing the remaining gap (28), which can be simply and cost-effectively detached and which reliably withstands high mechanical stress, the securing element (36) is mounted to rotate about its longitudinal axis (38) between the two parts (30, 32) and has a key head (40) and a web (44). The web (44) of the securing element (32) can be positioned by rotation in such a way that to fit the parts (30, 32) in the peripheral groove (10), said parts can be displaced in relation to one another and to secure the parts (30, 32) from being detached from said groove, (10) the web (44) of the securing element (36) can be placed against at least one lateral face (56) of one of the parts (30, 32).

The invention discloses an adjusting valve convenient to dismount. The adjusting valve comprises a valve seat. A water outlet pipe and a water inlet pipe are connected to the two side faces of the valve seat correspondingly in a clamped mode. A baffle is arranged in the valve seat. The top end of the baffle penetrates through a sealing ring and fixedly connected with a sliding rod arranged over the sealing ring. The top end of the sliding rod sequentially penetrates through a sliding sleeve and a U-shaped rod and is fixedly connected with a transverse rod arranged over the U-shaped rod. According to the adjusting valve convenient to dismount, through cooperation of a handle, a supporting rod, a second clamping rod, a round sleeve, a through hole, a second clamping groove and a spring, by pulling the handle, the second clamping rod is separated from the second clamping groove, a first clamping rod is separated from the valve seat, and dismounting of the baffle is achieved; when the baffle is mounted, a user just needs to insert the first clamping rod into a first clamping groove, mounting of the baffle can be achieved, and thus the baffle can be fixed to the valve seat without screws; and a worker does not to dismount and mount the baffle through a tool during periodic maintenance, so that dismounting of the baffle is more convenient.

The invention discloses a connector used for connecting two bolts or screws together. The connector comprises a sleeve, two polygonal nuts, two nut retaining rings and a spring, a polygonal channel is arranged inside the sleeve, the two polygonal nuts are positioned in the channel and are in clearance fit with the channel and capable of sliding along the channel, thread directions of the two polygonal nuts are opposite, the spring is positioned in the channel and positioned between the two polygonal nuts, the two nut retaining rings are mounted at two ends of the sleeve respectively, and the diameter of a middle hole of each nut retaining ring is larger than the screw diameter of each of the screws or the bolts. The invention further discloses a sectional type wind turbine blade which comprises at least two sections of blade portions, each two adjacent blade portions are connected to a whole through the bolts or the screws and the connector. The connector has the advantage of convenience in connection and facilitates field operation and mounting of the sectional type wind turbine blade.