200results about How to "Troubleshoot disassembly" patented technology

The present invention belongs to the device which is used for repairing the electric locomotive in the railway factory, and in particular relates to a main transformer installation platform of the electric locomotive. In the technical proposal, a plane vehicle body of the running part is provided with a lifting platform, a side moving platform and a turntable; the lifting platform is connected with the plane vehicle body of the running part through a group of lifting oil cylinders; the side moving platform is arranged on the lifting platform; a side moving oil cylinder is arranged between the upper surface of the lifting platform and the lower surface of the side moving platform; the turntable is arranged on the side moving platform and rotates around the center of gyration. Because of the lifting, turning, translating and other functions, the application efficiency of the installation platform is improved by more than 6 times. Because of the reliable positioning accuracy, the main transformer can be accurately and safely installed, and is guaranteed to be complete; and the installation platform has the characteristics of time-saving, labor-saving and cost-saving capacities, excellent security, high degree of mechanization, convenient maintenance, and so on.

The invention relates to an upper-mounting-type hydraulic ball valve which comprises an upper valve rod, a valve cover, a valve body, a lower valve rod and a valve seat assembly; the valve seat assembly is installed between the valve body and a central ball valve body; two sides of the valve body are respectively provided with the upper valve rod and the lower valve rod; the valve cover is installed at the part of the lower side of the upper valve rod; the clearance parts of the valve seat assembly, and the upper side and the lower side of an outer valve body are respectively provided with a grease injection hole II and a grease injection hole I; and one side of the grease injection hole II is provided with a screw plug hole. The invention has the beneficial effects that a hydraulic piston motion principle is adopted, the ball valve has a stable structure, the hazard of valve body leakage is avoided, the dismounting issue of the upper-mounting-type ball valve can be solved thoroughly with the minimum difficult, and the on-line maintaining requirement is realized; and the simple batch production of valves with large and small calibers and high and low pressure can be realized, the existing similar products can be replaced completely, and the ball valve has wide market potentiality.

A pump rapid assembling tooling comprises a bracket. The bracket consists of a former V-shaped frame and an after V-shaped frame which are parallel to each other. The former V-shaped frame and the after V-shaped frame are arranged vertically in a slide-rail which is arranged on a backplane. Two lateral adjustment bolts are arranged oppositely in the former V-shaped frame. Two lateral adjustment bolts are arranged oppositely in the after V-shaped frame. A height adjustment bolt is arranged in the backplane. The present invention uses the bracket which is arranged on the slide to support a suspension-rotor component, and uses the adjustment bolt to adjust the horizontal position and height of the suspension-rotor component. The present invention is not limited by the construction site condition and can be easily used and precisely assembled, which solves the problem of inconvenient demolition and reshipment of the dump in the pump field maintenance. The components of the dump are not easy to damage.

The invention discloses a convenient-detachment and convenient-mounting unmanned automobile laser distance measuring instrument. The unmanned automobile laser distance measuring instrument comprises fixing columns. The top of each fixing column is provided with a first threaded hole. The inner part of the first threaded hole is in threaded connection with a first threaded rod. The surface of the first threaded rod is fixedly connected with the inner surface of a bearing. The external surface of the bearing is fixedly connected with the inner wall of a through hole on the upper surface of a movable board. Three movable boards are arranged. Furthermore the three movable boards are connected in an end-to-end manner, thereby forming a tripod. According to the unmanned automobile laser distance measuring instrument, through arranging a disc, a through hole, a second threaded hole and a second threaded rod, a hand can reach a position below the tripod and rotates a second turn button for screwing the second threaded rod into or out of the second threaded hole, thereby finishing body mounting or detachment of the laser distance measuring instrument. High convenience, high speed and no requirement for any tool for assisting are realized. The unmanned automobile laser distance measuring instrument settles a problem of relatively tedious operation in detachment and mounting caused by a fact that the laser distance measuring instrument in prior art are mostly mounted on the top of the unmanned automobile fixedly in prior art.

The invention discloses a steel wire net rack demolition-free formwork system and a manufacturing method thereof, wherein two demolition-free formworks are adopted and hooked up through rebars, and concrete is cast on-site between the two formworks, so as to jointly form a wall body; and the demolition-free formwork has the structure that two-layered small-diameter small-interval rebar meshes are welded through three-dimensional oblique-inserting rebars into a spatial net rack, the spatial net rack is arranged in a mold, and a layer of thin concrete is cast in the mold to be solidified and formed into the formwork. The popularization and application of the steel wire net rack demolition-free formwork system saves resources, is environment-friendly, reduces the formwork cost, accelerates the construction speed, improves the efficiency, and is a significant innovation for the building construction.

The invention discloses a roll repairing method which is used for repairing a medium-and-small sized bar and wire roughing mill roll. A device for implementing the method comprises a roll and a bearing seat which is installed on the roll. The roll repairing method includes that step one, the roll and the bearing seat are simultaneously lifted on a roll machine tool, and the bearing seat is fixed; and step two, a roll lathe is started to repair the roll. During the step one, the roll and the bearing seat are simultaneously lifted on the roll machine tool to process the roll, the disassembly operation for the bearing seat is not required, and the problem that assembly and disassembly of the roll are complicated caused by the fact that the roll is required to be disassembled from the bearing seat during the repairing process for the roll in prior art can be solved.

The invention relates to a nut splitter, which comprises a main body frame, a hydraulic cylinder, a sliding block, a movable knife and a fixed knife, wherein the hydraulic cylinder is fixedly installed on the main body frame; the main body frame is provided with one pair of guide slots; two ends of the sliding block are matched with the guide slots and are respectively arranged in the guide slots; two ends of the sliding block can slide in the guide slots; the sliding block and the piston rod of the hydraulic cylinder are fixedly connected; the movable knife is fixedly connected with the sliding block; the fixed knife is fixedly installed on the main body frame. According to the nut splitter disclosed by the invention, fire and electricity are not used, bolt screw threads are not damaged, and therefore the difficulty of disassembling and replacing bolts and nuts can be conveniently, quickly, safely and efficiently solved.

The invention discloses a wet spinning forming device. The wet spinning forming device comprises a solidification batch and is characterized in that a baffle is arranged on the front portion and / or the rear portion inside a solidification bath body, two or more than two circular holes are evenly distributed in the baffle, the baffle is connected with the solidification bath body to form independent space, the bottom of the independent space of the front portion of the bath body and the bottom of the middle of the solidification bath body are respectively provided with a solidification bath liquid inlet pipe, and the tail portion of the solidification bath body and the bottom of the middle of the solidification bath body are respectively provided with a solidification bath liquid returning pipe. Flowing of solidification bath liquid in the solidification batch is controlled to enable the concentration and the temperature of the solidification bath liquid in the solidification bath to be homogeneous, the monofilament breakage caused by turbulent flow of the solidification bath liquid or pelagic silk crumbs generated by retention of the solidification bath liquid is prevented from being generated, and the fibers with the good quality can be manufactured.

The invention belongs to a comprehensive maintenance platform of a vertical mixed-flow pump. The comprehensive maintenance platform comprises a base, wherein a bearing body overturning mechanism is arranged at the left side of the upper surface of the base; an impeller adjusting mechanism is arranged below the bearing body overturning mechanism; an impeller loading / unloading mechanism is arranged at the right side of the upper surface of the base; the bearing body overturning mechanism comprises a trapezoidal bracket, bearings on the upper surface of the trapezoidal bracket, an overturning platform between the bearings, a speed reducer connected with one end of a bearing base, a driving motor connected with the speed reducer, and an electric control operation box; the impeller adjusting mechanism comprises a rail on the base, a sliding car on the rail, a lifting platform above the sliding car, a torque sensor on the upper surface of the lifting platform, and an impeller positioning block; and the impeller loading / unloading mechanism comprises a frame, a planetary speed reducer, a coupling and a motor. The comprehensive maintenance platform solves the problems of inconvenience for disassembly, mounting and detection of the vertical mixed-flow pump, is specifically suitable for the maintenance operation of large-scale assembly line total installed capacities, reduces the labor intensity of maintenance men, improves the working efficiency, and eliminates the potential safety hazards in the maintenance process.

The invention provides a horizontal vertical column assembling and disassembling machine which comprises a base, a power device and a workpiece clamping device, wherein the power device and the workpiece clamping device are placed on the base. The power device comprises a bearing block, a hydraulic motor, a ratchet device, a driving plate and a hollow shaft, the bearing block is arranged on the base, the hollow shaft is rotatably arranged on the bearing block along a horizontal direction, the hydraulic motor is fixed onto the bearing block and connected with one end of the hollow shaft, the ratchet device sleeves the outer wall of the hollow shaft and is connected with the outer wall of the hollow shaft, the driving plate is connected together with the ratchet device through the hollow shaft and extends out to the other end of the hollow shaft, and the driving plate, the ratchet device and the hollow shaft are coaxial. The horizontal vertical column assembling and disassembling machine realizes rapid assembly and disassembly, an oil cylinder with a piston rod incapable of returning to a cylinder body is disassembled, and the application range of a cylinder disassembling machine is widened.

The invention relates to a connection device of a cable rack. The connection device comprises a fixing seat, a connecting piece and a fastening member, wherein the fixing seat comprises a protruding part; the connecting piece comprises a resisting part; the fastening member is in pivot joint with the connecting piece; the fastening member comprises a fastening part and an elastic part; the elastic part is butted against the resisting part of the connecting piece; the connecting piece is in pivot joint with the cable rack; the fixing seat is fixedly connected with a rail member; and when the connecting piece is connected with the fixing seat, the elastic part provides an elastic force, so that the fastening part correspondingly fastens the protruding part of the fixing seat and the connecting piece is positioned on the fixing seat.

The invention discloses a new energy automobile charging protection circuit board. The circuit board comprises a circuit board body, and a mounting base is arranged at the bottom of the circuit boardbody; plug boards are fixedly connected to two sides of the bottom of the circuit board body; slots used in cooperation with the plug boards are formed in the two sides of the top of the mounting basecorrespondingly, moving blocks are arranged on the two sides of the inner cavity of the mounting base correspondingly, clamping blocks are fixedly connected to the opposite sides of the two moving blocks correspondingly, the surfaces of the clamping blocks are sleeved with tension springs, and the two sides of the tension springs are fixedly connected with the moving blocks and the inner wall ofthe mounting base correspondingly. By arranging the circuit board body, the mounting base, the plug boards, the slots, the moving blocks, the clamping blocks, the tension springs, necks, a rotating rod, a rotating disc, a rotating grip, a connecting strip, a groove, a spring, a push plate and a push block, the problem that an existing new energy automobile charging protection circuit board is inconvenient to mount and dismount is solved; the new energy automobile charging protection circuit board has the advantages of being convenient to assemble and disassemble and worthy of popularization.

The invention discloses a disc brush device capable of being rapidly dismounted. The disc brush device comprises a disc brush mounting plate, a plurality of disc brushes and two disc brush side supports, wherein the disc brushes are installed on two lower sides of the disc brush mounting plate left and right in a staggering manner, the two disc brush side supports are symmetrically installed on two ends of the disc brush mounting plate, and the disc brush side supports are fixedly connected with the disc brush mounting plate through hand-screwed lead screws. The disc brush device capable of being rapidly dismounted is simple in structure, detachable in a manual manner, time-saving and high in efficiency.

The invention discloses an automobile instrument panel protection mechanism. The automobile instrument panel protection mechanism includes a shell, a mounting groove is formed in the upper surface ofthe shell in a downwards concave mode, a hood plate detachably covers the shell, a transparent glass sheet is fixed to the surface of the hood plate, the mounting groove is formed below the transparent glass sheet, a motor is fixed inside the shell, a first gear is fixed to a rotor of the motor, and the two ends of a rotation shaft are a first end and a second end respectively, wherein the first end is located above the shell, the second end is located inside the shell, a wiping mechanism which is arranged in the horizontal direction is fixed to the first end, and a second gear meshing with the first gear is fixed to the second end. By the adoption of the automobile instrument panel protection mechanism, the problems are solved that due to the influence of working environment, dust easilyenters automobile instrument panels of some transportation trucks, and therefore the automobile instrument panels are extremely difficult to detach and clean because of structural limits of the automobile instrument panels.

The invention discloses an auto floodlight convenient to disassemble and maintain. The auto floodlight convenient to disassemble and maintain includes a mounting box, a lamp housing, a screw rod, rectangular sliding blocks, rollers, a mounting base, a lamp board and lamp beads. The screw rod is rotatably arranged in a rectangular cavity through a bearing connection mode. The outer circumferences of the two ends of the screw rod are sleeved with the two rectangular sliding blocks in a thread connection mode. The bottom ends of the two rectangular sliding blocks are fixedly provided with supportrods which are arranged vertically. The rollers are both fixed on the inner side wall of the bottom portion of the two support rods. The lamp housing is fixed at the bottom portion of the mounting seat. The inner cavity of the lamp housing is provided with a fixed plate and a lamp board. The bottom of the lamp board is uniformly provided with a plurality of lamp beads, and the side walls of the mounting base are provided with oblique chamfers. The positioning of the lamp housing is convenient and quick, the heat dissipation effect is good, and the installation, disassembly and maintenance forfloodlight are convenient. The problems that an existing auto floodlight is not easy to install and disassemble are solved.

The invention discloses a fixing and mounting rack for a transformer core set. The rack includes a base plate, wherein an upper end of the base plate is detachably connected with two I-shaped sectionsteels, upper ends of the I-shaped section steels are respectively fixed with two backing plates, upper ends of the four backing plates are commonly provided with a transformer core set mounting casing, a lower end of the transformer core set mounting casing is provided with a supporting device, the upper ends of the four backing plates respectively press against a lower end of the supporting device, bottom portions of the two I-shaped section steels are respectively fixed with two insertion blocks, two fixing blocks are arranged between the two I-shaped section steels, and lower ends of the fixing blocks are provided with two insertion grooves corresponding to the insertion blocks. The rack is advantaged in that a problem that a transformer core can not be conveniently fixed in a transformer casing is solved, a problem of mounting and dismounting inconvenience during maintenance and replacement of the transformer core is further solved, not only can stability of the transformer core be improved, but also mounting and dismounting efficiency is improved, labor intensity of workers is reduced, and cost is reduced.

The invention provides an enhancement type multi-layer S type metal bellows which comprises an expansion joint and an enhancement component, wherein the enhancement component comprises a plurality of enhancement rings and two end head armored rings, the expansion joint comprises straight edge sections arranged at two ends and a plurality of sequentially-connected wave nodes arranged in the middle of the two straight edge sections, and each wave node consists of an arc type wave trough, linear transition sections respectively arranged at two ends of the wave trough, and arc type wave peaks respectively connected with the transition sections; and the adjoining wave nodes are connected with each other by the arc type wave peaks. According to the enhancement type multi-layer S type metal bellows provided by the invention, the pressure resistance can be greatly improved on the premise that good displacement compensation capability and long fatigue life are guaranteed, so that the defect that the common enhancement-free S type bellows and the bellows of other types can not meet the requirement of the large-displacement compensation capability of a large-caliber and high-pressure pipeline can be overcome.

The invention discloses a crimping surface adaptive crimping machine which comprises a first driving assembly, a crimping mechanism and a replacement mechanism. The first driving assembly spans abovea transmission belt along a direction perpendicular to the transmission belt. The crimping mechanism is connected on the first driving assembly. The crimping mechanism comprises a driving part, a connecting part and a crimping part. The driving part is connected on the output end of the first driving assembly. The connecting part is connected on the output end of the driving assembly. The crimpingpart is arranged below the connecting part and is arranged at intervals with the connecting part, and the lower part of the crimping part is detachably connected with a crimping joint. An adaptive sphere and a flexible connecting plate are arranged in a gap space between the crimping part and the connecting part, and the adaptive sphere is rotatably connected in the gap between the flexible connecting plate and the connecting part or the gap between the flexible connecting plate and the crimping part. The replacement mechanism is arranged at the side of the transmission belt. The adaptive parallel bonding of the crimping surface and the automatic disassembling and assembling of the crimping joint can be realized.

The invention discloses a full-automatic nut disassembly device. The full-automatic nut disassembly device is characterized by comprising a driving cylinder, a driving cylinder piston, a mounting frame, a mounting base, a mobile tool bit, a nut and a fixed tool bit, and further comprises a driving device, a mounting fixed device and a disassembly device; the driving device is the driving cylinder; the driving cylinder can be a hydraulic cylinder or a pneumatic cylinder; a piston of the driving cylinder is fixedly connected with the mobile tool bit on the mounting base through the mounting frame; the mobile tool bit is movably mounted in the mounting base; the fixed tool bit is fixedly mounted at the other end of the mounting frame; and an operation station for nut disassembly is between the fixed tool bit and the mobile tool bit. The full-automatic nut disassembly device has the advantages of: no use of fire, no use of electricity, no damage of bolt screw threads, convenience, speediness, safety, and efficient solution of the disassembly and replacement difficulties of bolts and nuts.

The invention relates to an installation method of an optical fiber acceleration sensor for turbine generator stator end vibration measurement. The method comprises the steps that the optical fiber acceleration sensor is preinstalled on an insulating padding plate through an instant adhesive, the insulating padding plate is a glass plate with the thickness being 2.0 mm, the insulating padding plate is installed on a component to be measured through a small quantity of instant adhesive, the outer side of the optical fiber acceleration sensor is bound by polyester viscose with the thickness being 0.8 mm, the outer side of the polyester viscose is bound by two circles in the mode that a polyester glass rope is soaked in an epoxy resin adhesive, and curing needs to be carried out for more than 12 hours after binding is finished. According to the installation method, the problem that a sensor for turbine generator stator end vibration measurement is hard to assemble or disassemble is solved, the experiment proves that the insulating padding plate with the thickness being 2.0 mm has the 0.2-0.4%. influence on data, and the influence is within the error allowance range. Meanwhile, the sensor for vibration measurement can be repeatedly used, so that the cost is saved.

The invention discloses a tail gas treatment device for chemical equipment. The device comprises a discharge pipeline, wherein one side of the discharge pipeline is fixedly provided with a fixed box,opposite side walls in the fixed box are jointly provided with a moving device, the moving device is provided with a fixing device, one side of the fixed box is provided with a first opening, one sideof the discharge pipeline is provided with a second opening corresponding to the first opening, a filter plate runs through the first opening and the second opening together, the side wall of one endin the discharge pipeline is provided with a limiting groove, and the limiting groove corresponds to one end of the filter plate. The tail gas treatment device for the chemical equipment has the advantages that the problem of inconvenient assembly and disassembly when the filter plate is replaced is solved, the assembly and disassembly efficiency is improved, a large amount of time is reduced, the problem that tail gas cannot be filtered due to the fact that the filter plate shakes easily when being subjected to an external force is also avoided, the practicability is high, the operation is simple, and the use is convenient.

The invention relates to the technical field of a casting machine cooling mechanical arm, and discloses a casting machine cooling mechanical arm with a motion track memory function, which includes brackets, fixing plates, a horizontal driving mechanism, an overturning mechanism, a receiving plate and a clamping rod; lifting pillars are arranged at the top ends of the four bracket; the two fixing plates are respectively and fixedly mounted at the top parts of the four lifting pillars on the left side and the right side; the horizontal driving mechanism is fixedly mounted at the top parts of thetwo fixing plates; a vibration damping plate is arranged at the top surface of each fixing plate, and is clamped at the inner top of the cavity of the corresponding fixing plate; a vibration dampingpiece and a rubber plate are fixedly mounted at the bottom of each vibration damping plate; each vibration damping piece consists of a limiting spring, an arc block, a damping spring and a roller. The casting machine cooling mechanical arm with the motion track memory function realizes that vibration caused by operation of the horizontal driving mechanism is completely buffered and reduced underthe combined action of the vibration damping plates and the vibration damping piece, and solves the problem of unstable object clamping of the bottom caused by operation vibration of the horizontal driving mechanism.

The invention relates to a small space socket head cap screw mounting and dismounting tool, belongs to mounting and dismounting tools in the technical field of mechanical installation and aims at solving the technical problem of providing small space socket head cap screw installation and removal tools. According to the technical scheme, the small space socket head cap screw mounting and dismounting tool comprises a long-handle socket head wrench, a head connecting plate, an elastic pressing and fixing unit, a screw and a socket head cap screw. The elastic pressing and fixing unit comprises a fixing ring, a threaded hole, a hollow screw, a hollow nut, a spring, a steel ball, a 120-degree cone angle hole and the like. The steel ball is mounted in the hollow screw and the spring is mounted above the steel ball and pressed by the inner surface of the hollow nut to form the elastic pressing and fixing unit. The long-handle socket head wrench is fixed to the fixing ring of the elastic pressing and fixing unit, the socket head cap screw is mounted in a socket head cap screw hole in the fixing ring, and the socket head cap screw and the socket head wrench are formed into a whole to form the small space socket head cap screw mounting and dismounting tool.

The embodiment of the invention provides a liquid cooling heat dissipation device and liquid cooling heat dissipation equipment. The liquid cooling heat dissipation device comprises two radiating fins, a fixture, a water-cooling head, a fixed link, a buckle and a hook, wherein the two radiating fins are respectively arranged on two sides of an internal storage in parallel; the water-cooling head is fixedly arranged on a main board and is in contact with the part, vertically extending out of one end of the internal storage, of one radiating fin; during installation, the other end of the fixed link passes through a through hole in one end of the buckle and a through hole of one radiating fin and is inserted into the hole of the water-cooling head, so that the buckle, one radiating fin and the water-cooling head are fixed together; the hook passes trough a through hole in the other end of the buckle and is buckled by the other end of the buckle. By virtue of a mounting tool with combined buckle and fixed link, the heat transfer distance of the liquid cooling heat dissipation device in installation and detachment processes are shortened without using tools, and the problem that detachment and installation in the liquid cooling heat dissipation device are inconvenient due to high thermal-conduction resistance of the internal storage liquid cooling heat dissipation device is solved.

The invention discloses a looseness-preventing and seizure-preventing sleeve thread connecting method and an assembly; the assembly comprises a bolt and nut connecting assembly; the method comprises the following steps: firstly forming 2-8 conical notches at one end of the nut, conducting radial extruding on the nut of the end, provided with the conical notches in order to enable the nut to shrink, namely a section of conical hole thread with gradually reducing diameter is formed in the internal thread of one end of the nut, the nut has the looseness-preventing function when being connected with the bolt by using the conical hole thread; and meanwhile, firstly plating a layer of zinc-nickel alloy layer on the surface of the thread of the nut, and then dip-coating a layer of molybdenum disulfide layer, in this way, the nut has high-corrosion-resistance and seizure-preventing functions when being connected with the bolt. The method and the assembly not only have the advantages of being capable of effectively preventing a fastener from the phenomenon of seizure, rotation, rusting and breaking during use, but also have the following advantages that the structure is simple, the manufacturing cost is low, the weight is light, the service is safe and reliable, the assembly is convenient and fast to disassemble and maintain, etc.

The invention discloses a formwork system suitable for a large-diameter manual hole digging annular foundation pile and a construction method. The formwork system comprises a reference column, connecting pieces, steel pins, steel formwork horizontal supports, a manual hole digging pile guard arm, a steel formwork fixing rod, an annular steel formwork, a steel formwork longitudinal connecting hole,a steel formwork horizontal connecting hole, steel formwork horizontal support length adjusting devices, annular foundation pile concrete, an annular foundation pile formwork system, a reference column connector, an annular foundation pile top and an annular foundation pile bottom. The formwork system has the beneficial effects that good support can be provided for the annular steel formwork, sothat the overall stability of the formwork system can be effectively improved, the problem that the annular steel formwork is not easy to install and disassemble is effectively solved while the tightconnection of the annular steel formwork is guaranteed, no connecting device is arranged between the annular foundation pile formwork system and the manual hole digging pile guard arm for connection,it is ensured that a foundation pile reinforcement cage can be integrally hoisted, and the construction progress is accelerated.

The invention relates to a CPP shafting hydraulic coupling dismounting method. The method is characterized in by comprising the following process steps that firstly, an outer sleeve is released; secondly, an inner sleeve is released. The method has the advantages of resolving the dismounting problem when a hydraulic coupling has faults, and being high in dismounting efficiency.

The invention belongs to the technical field of justice and discloses an anti-detachable watch. The anti-detachable watch comprises a watch head, a lock catch, a first watch band arranged on one sideof the watch head and the lock catch, as well as a second watch band arranged on the other side of the lock catch, wherein one end of the first watch band and one end of the second watch band are respectively and fixedly connected with the watch head; the other end of the first watch band is movably connected with the lock catch; the other end of the second watch band is fixedly connected with thelock catch; the first watch band comprises a first steel bar, steel teeth and a first silicone band; the first steel bar is in spot welding connection with the steel teeth; the first silicone band wraps the first steel bar and the steel teeth; the lock catch comprises a latch buckled with the steel teeth, a spring arranged on the outer side of the latch, a padlock upper cover arranged above the latch and a padlock lower cover arranged below the latch; the padlock upper cover and the padlock lower cover form a first accommodation cavity. The conventional justice electronic watch is difficult to adjust, complex in structure and tedious in detaching; aiming the problems, the invention develops the anti-detachable watch which is simple in structure and convenient to adjust.

The invention provides a keyboard for a computer. The keyboard comprises a computer body; the two sides of a keyboard body are provided with slide grooves; one end of the keyboard body is movably connected with the computer body via a running wheel, and the lower surface of the other end of the keyboard body is provided with a support rod; one end of the corresponding slide groove is provided with a sleeve corresponding to the support rod; one end of the support rod is inserted in the sleeve; the inner portion of a movable rod is movably connected with a rotary wheel via a connecting rod; the rotating wheel is connected with the lower surface of the keyboard body via a push rod; the two ends of an upper shell are movably provided with movable plates each of which is connected with one end of a vertical rod in the upper shell via an insertion rod; one end of each insertion rod penetrates the middle portion of the corresponding movable plate and is connected with a control button; the bottom ends of the vertical rods are fixedly connected with metal blocks. The keyboard solves the problems in the prior art that the position and the angle of a conventional keyboard cannot be well adjusted for typewriting and thus the keyboard causes using troubles, and it is inconvenient to detach and clean the keys of the keyboard.