85results about How to "Good limit fixation effect" patented technology

The invention provides a feather correcting and shearing integrated device for badminton production. The device comprises a box, a conveying belt, a hydraulic pump, supporting columns, a collecting box and control equipment, wherein the conveying belt is arranged on the inner side of the bottom end of the box, the hydraulic pump is arranged at the top of the box, the supporting columns are arranged on the left and right sides of the bottom of the conveying belt, the collecting box is arranged at the bottom of the left side of the conveying belt, and the control equipment is embedded in the front end of the box. The whole device is stable in structure, high in feather carding capacity, simple and convenient in shearing operation step, high in feather shearing efficiency, convenient in feather fixing operation and high in stability.

The invention discloses a metal pipe welding device capable of adjusting spacing. The metal pipe welding device comprises a fixing base, a first servo motor, a second servo motor and a welding head; and the first servo motor is fixed to the right side of the fixing base through bolts, the edge side of a transmission rod is connected with a gear through a bearing, a rubber water bag is mounted at the upper end in a working box, an electric push rod is fixed to the middle of the upper end in the working box through bolts, a transverse plate is fixedly mounted at the lower end of the electric push rod, the welding head is mounted in the middle of the lower end of the transverse plate, and a supporting rod is fixed to the edge side of the lower end of the transverse plate through bolts. According to the metal pipe welding device capable of adjusting the spacing, the spacing between a metal pipe and the welding head can be conveniently adjusted, meanwhile collision between the welding headand the metal pipe can be avoided, good limiting and fixing effects on the metal pipe can be achieved, and meanwhile a certain cooling effect on a welded position of the metal pipe can be achieved after welding work is completed.

The invention discloses a high-strength tooth-form composite halogen-free photovoltaic line cable, and the cable comprises an elastic support, conductor core wires, a fluoroplastic insulating layer, a buffering layer, a steel wire braiding armored layer, an insulating silica gel heat dissipation layer, and a heat dissipation belt. The plurality of conductor core wires are twisted together to form three bundles, and are uniformly the elastic support in a peripheral direction from the inside to the outside. A mineral substance fire-insulating material is placed in a gap between the elastic support and the conductor core wires. The outer side of the elastic support is sequentially wrapped by a metal shielding layer, the fluoroplastic insulating layer, a magnesium and silica alloy braided layer, a buffering layer steel wire braiding armored layer, an insulating silicon gel heat dissipation layer, and a heat dissipation layer. A tooth-shaped projection at an outer layer of the cable is equivalent to a limiting strip. For a plurality of parallel cables, the cable effectively avoid the twisting and mixed winding of cables because the tooth-shaped projection among cables plays a good effect in limiting and fixing, and brings convenience for wiring.

The invention relates to the field of experimental equipment and in particular provides a test tube fixation frame. The test tube fixation frame comprises vertically arranged vertical plates, whereinfixed plates used for being inserted by test tubes to fix the test tubes and supporting plates used for supporting the bottom of the test tubes are sequentially arranged from top to bottom among the vertical plates, more than two slots are formed in the vertical plates at intervals along the vertical direction, each slot is provided with a slot wall used for supporting the supporting plates and / orfixed plates which are inserted into the slots and connected among the vertical plates, and the slots are extended and arranged along the horizontal direction; and limiting structures used for limiting displacement of the supporting plates and / or fixed plates along the slot arrangement direction are arranged at the two ends of each slot. The limiting structures can guarantee that the supporting plates and / or fixed plates cannot move in the slots in an experiment process, so that fixation is realized; meanwhile, spaces between the supporting plates and the fixed plates can be changed by virtueof the supporting plates and / or fixed plates inserted into different slots, so that the test tubes in different specifications are adapted, and applicability is relatively high.

The invention belongs to the field of electric power construction project large-section wire compression jointing manufacturing, and particularly relates to a wire compression jointing work platform used for large-section wire compression jointing. The wire compression jointing work platform comprises a fixing frame serving as a base body, a platform part fixedly connected with a compression jointing top is arranged on the fixing frame, a supporting unit used for supporting and limiting the spatial position of a wire to be in compression jointing is further arranged on the side, next to the platform part, of the fixing frame, and a supporting path of the supporting unit and a wire penetrating path of the compression jointing top are located in the same straight line. The wire compression jointing work platform is overall easy and convenient to operate, meanwhile, staff organizations are simplified, the compression jointing time is saved, and the wire compression jointing work platform has the advantages that the compression jointing process is improved, compression jointing workers are reduced, and the compression jointing time is shortened; the process quality is improved, and meanwhile the construction work efficiency is greatly improved.

The invention belongs to the field of cargo transportation equipment, and particularly relates to a trolley capable of shifting between turning and orientated straight driving. The trolley comprises a trolley body, wherein a plurality of universal wheels and a plurality of baffle plates are arranged on two sides of the trolley body; the baffle plates correspond to the universal wheels one to one; the plate surface of one end of a moving track of each baffle plate is adhered to the side surface of each universal wheel; a plate body at the other end of the moving track of each baffle plate is positioned outside the rotation track of each universal wheel. The trolley has the beneficial effects that the good direction control effect is good in a straight driving state, the time is shortened, the labor is saved, the security is high, the straight driving and turning state shifting effect is good, the limiting control effect of tooth matching is good, the small-angle turning effect is good, and the adjusting capability is good; moving plates are convenient to push and move, and the limiting fixation effect is good; connecting parts are fixedly connected with one same end of each of two moving plates, then the moving plates can be conveniently stressed to push and move simultaneously, thus being convenient to operate; a light reflecting lamp has an alarm function, thus being high in security; due to the chamfering beta, the universal wheels can be smoothly rotated and effectively adhered to the baffle plates when the moving plates are pushed, no resistance can be generated, and convenience in operation can be achieved.

The invention relates to the technical field of transfer devices, and discloses a new energy automobile battery pack transfer protection device. The device comprises a containing box, a cover plate isarranged at the top end of the containing box, a mounting cavity is formed at one side of the containing box, and a main pressing unit for pressing the cover plate is arranged in the mounting cavity.The main pressing unit comprises an elastic plate with elastic deformation, two clamping blocks and a pushing piece for pushing the clamping blocks to be folded, the two clamping blocks are hinged tothe side wall of the mounting cavity, the pushing piece comprises a pressing rod, a pressing ball and a pressing plate, the pressing plate and the pressing ball are fixedly connected with the two ends of the pressing rod correspondingly, and the pressing rod penetrates through the cover plate. The upper portion of the pressing rod is in threaded connection with the cover plate, the cover plate isin running fit with the lower portion of the pressing rod, a sliding plate is vertically connected to the cover plate in a sliding manner, an abutting plate is arranged below the sliding plate, a buffer spring is arranged between the abutting plate and the sliding plate, and the pressing plate can press the sliding plate. According to the new energy automobile battery pack transfer protection device, a storage battery can be prevented from jumping in the storage battery transferring process, and therefore damage to the storage battery is avoided.

The invention discloses a comprehensive wood polishing device. The comprehensive wood polishing device comprises a movable box, wherein a matching type fixing cylinder is fixedly arranged at the lower end of the movable box, an insertion column is inserted into the middle of the lower end of the matching type fixing cylinder, a polishing piece is fixedly welded to the lower end of the insertion column, a cylindrical deep groove is formed in the middle of the lower end of the matching type fixing cylinder in a penetrating mode, the insertion column is inserted into the cylindrical deep groove in the matching type fixing cylinder, fixing matching pieces are fixedly arranged on the two sides of the matching type fixing cylinder, and pushing pieces are movably arranged on one sides of the lower ends of the fixing matching pieces in a penetrating mode. According to the comprehensive wood polishing device, movable inclined grooves are formed in the middles of movable connecting rods in a penetrating mode, movable shafts can move relatively in the movable inclined grooves, and thus the movable connecting rods are not likely to get stuck during rotary movement.

The invention relates to a rocker switch structure, comprising a casing, a rocker button and a rocker contact piece, wherein the rocker switch contact piece is mounted in the casing, the rocker button is arranged in the casing in a raised manner, and is provided with a rotary lug boss, a clamping hole is formed in the casing, and is provided with a limit structure, the rotary lug boss is clamped in the clamping hole, so that the rocker button is movably connected with the casing; and when the rocker button is pressed, the rotary lug boss rotates, and is fixed in the limit structure. Compared with standard rocker switches in the prior art, bending process is not required after the rocker contact piece is punch-formed at one time, and the rocker switch structure disclosed by the invention has the advantages of lowered cost for manufacture, easiness for assembly, better limitation and fixation, long service life, high product reliability and no easiness for bending the rocker contact piece.

The invention discloses a mechanical arm material moving and folding mechanism for a stamping assembly line. The mechanical arm material moving and folding mechanism includes a manipulator and a material reversing mechanism, and the manipulator is provided with a dual-arm composed of a fixed arm and a detachable arm; the fixed arm and the detachable arm are coaxially arranged and extend in the opposite directions, the manipulator is disposed between two punch presses, and the fixed arm and the detachable arm are connected with a rotating shaft; and the material reversing mechanism and the manipulator are arranged between the same two punch presses, and the material reversing mechanism is provided with a roll-over frame and a secondary positioning platform which are arranged in the direction perpendicular to connecting lines of the two punch presses. The detachable arm is provided with a bottom shaft and a sleeve, the bottom shaft passes through the sleeve and is fixed, the bottom shaftis fixedly integrated with the manipulator, and pin holes for inserting pins are formed in the bottom shaft and the sleeve. According to the mechanical arm material moving and folding mechanism for the stamping assembly line, the modification cost of the manipulator is low, two stamping parts can be driven for position transfer at the same time, and the process efficiency of the stamping on bothsides is improved.

The invention relates to a high-safety power investigation aircraft stopping platform. The stopping platform comprises a damping device, two shading devices and a stopping base. The shading devices are located on the left side and the right side of the damping device correspondingly along the central axis of the damping device. The stopping base is located over the damping device and fixedly connected with the damping device. The stopping platform can provide stopping protection for a power investigation aircraft during outdoor operation under the circumstance of sudden thunderstorm weather, the damping performance is good during stopping, the limiting stationarity is high, thus the problems that electric shock or a lightning stroke is liable to occur to the power investigation aircraft flying in thunderstorm weather are avoided, so that the operation safety of the power investigation aircraft is improved greatly.

The invention discloses a cover plate assembly with a battery aluminum adapter piece, and aims to provide the cover plate assembly with the battery aluminum adapter piece, which can improve the bonding strength, improve the production efficiency and the yield and reduce the manufacturing cost. The cover plate comprises a cover plate body, a first switching piece is installed on the cover plate body, the first switching piece comprises a first switching piece body and an injection molding part, a first glue hanging hole and a second glue hanging hole are formed in the first switching piece body, and the injection molding part wraps one face of the first switching piece body and the side edge of the first switching piece body and penetrates through the first glue hanging hole. And the injection molding part is also coated on the other surface of the body of the adapter sheet I and penetrates through the glue hanging hole II. The invention has the following beneficial effects: a traditional PET film pasting part is cancelled, the upwarp phenomenon is avoided, the production process is simplified, and the manufacturing cost and the labor cost are reduced; the bonding strength of the injection molding part and the first adapter piece body is enhanced, and the production efficiency and the yield are greatly improved.

The invention discloses a pipe bending mechanism for hardware pipe machining and a working method thereof. The pipe bending mechanism comprises a case, a displacement assembly, a limiting assembly, a pipe bending rotary disc, a first bent pipe, a second bent pipe, a power assembly, a supporting assembly, a heat dissipation assembly and an electric control plate, wherein the pipe bending rotary disc is mounted on the top end face of the case; the first bent pipe is inserted into the center of the end face of the pipe bending rotary disc; the second bent pipe is inserted into the outer side of the end face of the pipe bending rotary disc; the power assembly is arranged below the bottom end face of the pipe bending rotary disc and installed at the bottom of the inner side of the case; and the limiting assembly is arranged on one side of the outer portion of the pipe bending rotary disc. The pipe bending mechanism is small in size and convenient to move; the pipe bending mechanism can bend pipes of different models and lengths, has a good limiting and fixing effect on the pipes, and is firm in fixation and good in bending effect; and meanwhile, a good heat dissipation effect is achieved, and the heat dissipation rate of a motor can be effectively increased.

The invention discloses a fastening device of a multi-ridge oscillator antenna. The fastening device comprises a plurality of antenna narrow ridges (2), antenna wide ridges, a central support (4) anda plurality of peripheral supports (3), wherein every two peripheral supports (3) are symmetrically arranged relative to the central support (4); the two groups of antenna wide ridges are arranged onthe central support (4) and the peripheral support (3) in a crossed manner; wherein the antenna narrow ridges (2) are symmetrical about the central support (4) and are placed on the peripheral supports (3), and the top of the central support (4) is provided with central fixing holes (404) corresponding to the intersections of the two groups of antenna wide ridges and second narrow ridge fixing grooves (405) in interference fit with the antenna narrow ridges (2). The invention further discloses a fastening method of the multi-ridge oscillator antenna. According to the fastening device of the multi-ridge oscillator antenna, a large-range screw fixing mode is avoided, and the limiting and fixing effect is good.

The invention discloses safety equipment with a hand restriction function for preventing an impulsive patient. The safety equipment comprises a base, a supporting block, a carrying plate, a backrest and an electric telescopic rod, wherein the supporting block is fixedly installed at the upper end of the base; the upper end of the supporting block is fixedly installed at the lower end of a transverse plate; an inserting block is installed at the upper end of the carrying plate; a movable plate is connected to the upper portion of the inserting block; a pulley is installed on the side of a pushing block; the inner end of a clamping block is installed in a finger groove; a driving rack is connected to the left side of a clamping plate; a circular gear is installed at the upper end of the driving rack; and a connecting rod is fixedly installed at the upper end of the clamping plate. The safety equipment with the hand restriction function for preventing the impulsive patient can well limitand fix the arms and fingers of the patient during use, so that the possibility of needle deviation and needle disengaging of the patient is reduced, and meanwhile the back and the legs of the patientcan be knocked and massaged in a reciprocating mode.

The invention discloses a track plate lifting and translating device. The device comprises a base, a lifting structure, a translation structure and a first limiting structure, a second limiting structure and an auxiliary alignment structure. Universal wheels are arranged at the bottom of the base. A balance weight box is arranged at the position, close to the edge of one side, of the surface of the upper end of the base. A push handle is installed on the surface of the upper end of the base at an inclined angle and is close to the counterweight box, a control switch is installed on the push handle and is close to the top end of the push handle, the lifting structure is fixedly installed on the surface of the upper end of the base, and the translation structure is installed on the side, away from the push handle, of the lifting structure. Time and labor are saved when the track plate is lifted and translated. The working efficiency of lifting and translating adjustment on the track plate is greatly improved, the limiting and fixing effect on the track plate is high when the track plate is lifted and translated, necessary damage caused by sliding of the track plate is avoided, and meanwhile alignment adjustment work on the track plate is facilitated.

The invention discloses pressure-area-adjustable building engineering plate compression resistance detection equipment which comprises a device body, an electric push rod, a pressure sensor and an electric telescopic rod, the electric push rod is fixedly installed in the middle of the inner side of the device body, and a lateral block is installed on the side of the electric push rod; a threaded rod is installed in the middle of the lateral block, the lower end of a connecting rod is installed on a guide block, the guide block is installed in an adjusting plate, the lower end of a traction rope is connected to a transmission rod in a wound mode, a circular gear is fixedly installed at the inner end of the transmission rod, and the outer side of the upper end of a roller rod is installed onthe inner side of a connecting plate; and the roller rod and the connecting plate are connected with each other through a reset spring. According to the pressure-area-adjustable plate compression resistance detection equipment for constructional engineering, the pressure area on a wall plate can be conveniently adjusted, meanwhile, a good limiting and fixing effect can be achieved on the wall plate, and stones generated after the wall plate is broken can be blocked.

The invention discloses a top cover wire harness convenient to install, and relates to the technical field of automobile top cover wire harnesses, the top cover wire harness convenient to install comprises top covers, connecting rods, first cylindrical rods, straight plates and threaded rods, the number of the top covers is two, the wire harness can be fixedly limited in different clamping assemblies through the clamping assemblies, and the wire harness is very easy and convenient to store and take; the wire harness on the top cover can be directly detached without detaching the top cover from the automobile under the tedious situation that the wire harness is detached, so that the situation that detachment is troublesome during maintenance is reduced in a disguised manner, the limiting and fixing effect on the wire harness is improved to a great extent under dual fixation of a T-shaped plate and a push plate, and the safety of the automobile is improved. And through the special arc-shaped arrangement of the T-shaped plate and the push plate, the wire harness can be comprehensively protected, and the situation that the wire harness cannot work due to damage, short circuit and the like caused by external reasons is avoided.

The invention relates to a sheltering device of a power detecting robot in severe weather. The sheltering device comprises a damping device, two shading devices and a stopping base, wherein the shading devices are respectively positioned on the left and right sides of the damping device along the central axis of the damping device; the stopping base is positioned right above the damping device; and the stopping base is fixedly connected with the damping device. The sheltering device can provide stopping protection for the power detecting robot performing outdoor operation under the situation of sudden thunderstorm weather, the vibration reducing performance during stopping is good, the limiting stationarity is high, the problem that the power detecting robot is liable to suffer electric shock or lightning stroke when flying in thunderstorm weather is avoided, and the operation safety of the power detecting robot is greatly improved.

The invention discloses a ground drilling type tower crane foundation platform capable of improving supporting strength. The foundation platform comprises a placing platform, a ground is arranged below the placing platform, an embedded tunnel is formed in the end face of the ground, mounting bases are arranged on the periphery of the top of the placing platform, and supporting frames are arranged on the end faces of the mounting bases; by arranging an extension groove and an anti-seepage piece, the supporting frames are connected with the mounting bases, meanwhile, it is ensured that water seepage does not occur during connection of the supporting frames and the mounting bases, the bottoms of the supporting frames are not corroded by liquid, by arranging the placing platform and internal components of the placing platform, the supporting frames are placed more stably, by setting a supporting truss, the bearing capacity and the placing stability of each group of supporting frames are improved, the supporting strength of the foundation bearing platform is improved, and the supporting strength can be effectively improved by arranging the embedded tunnel and adopting a ground drilling type structure which is different from an original bearing platform structure.

The invention discloses an aluminum profile cutting machine which comprises a base plate, a water tank, a fine adjustment device, a first slide rail, a second slide rail, first electric hydraulic rods, a downward pressing device and a cutting wheel. The upper left side of the base plate is fixedly provided with the two sets of first electric hydraulic rods arranged left and right. A squeezing plate and a profile are in face contact, so that the limiting and fixing effects are improved while the profile is prevented from being crushed. The first electric hydraulic rods are started through an external switch so that the height of the profile can be conveniently adjusted. A rotary handle is twisted to enable a worm to drive a worm wheel to rotate so as to enable a gear to drive a rack plate to move so that the position of the cutting wheel can be conveniently adjusted. By adoption of design of the worm wheel and the worm, adjustment precision is improved, a second electric hydraulic rod is started through an external switch so that opening and closing of a protective cover can be controlled, aluminum scraps are prevented from being spurted out, safety is improved, a spray nozzle sprays water by starting an output pump, and operation environment quality is improved while the profile is cooled.

The invention provides a machining limiting mechanism based on stability improvement. The machining limiting mechanism comprises a shell, a main body is fixedly mounted on the inner wall of the shell, a mounting part and a fixed seat are fixedly mounted on the inner wall of the main body, a driving device is fixedly mounted on the inner wall of the mounting part, a driving connecting rod is mounted on the driving device, and a movable part is fixedly mounted at the shaft end of the driving connecting rod. According to the machining limiting mechanism based on stability improvement, the driving device is promoted to generate kinetic energy through external driving, the movable part is driven to move through the driving connecting rod, meanwhile, the movable rod is synchronously pulled to move through the connecting rod, and the limiting mechanism makes contact with a mechanical part, so that the mechanical part is firmly fixed; and meanwhile, by arranging a protective layer, the purpose of automatically protecting the mechanical part is achieved, the limiting and fixing effect of the limiting mechanism on the mechanical part is further enhanced, and meanwhile, the fixing efficiency of the device is improved.

The invention relates to the technical field of medical auxiliary devices, in particular to a cardio-pulmonary resuscitation pressing device for emergency severe illness, which comprises a transverse frame, a mounting bottom block, a mounting top block, a servo electric cylinder and a rechargeable storage battery, a supporting frame is fixedly mounted on the right side of the lower surface of the transverse frame, and an arc-shaped opening clamping block A is fixedly mounted on the surface of the lower end part of the supporting frame; the mounting bottom block is fixedly mounted on the left side of the lower surface of the transverse frame. A threaded rod A is driven to rotate through a rocking disc, clamping rods can be driven to slide towards the inner side along the interior of a limiting groove, then an arc-shaped opening clamping block B is driven to be clamped to the outer portion of a guardrail of a sickbed and matched with an arc-shaped opening clamping block A to form a good clamping effect, and the whole device is conveniently and stably installed above the sickbed; the requirement of cardio-pulmonary resuscitation treatment of a patient in the transferring process is met, a servo electric cylinder moves left and right along the interior of a mounting through groove, the position of a pressing device is finely adjusted, and therefore the cardiac pressing position can be accurately found conveniently.

The invention discloses a safety limiting fixing device for a large-size logistics vehicle. The device comprises a first limiting block and a second limiting block, wherein the side faces of the firstlimiting block and second limiting block are fixedly provided with threaded rods respectively, a positioning connecting plate is in threaded connection between the threaded rods, the side faces of the first limiting block and second limiting block are fixedly provided with sliding grooves respectively, the inner portions of the sliding grooves are provided with sliding blocks, the outer sides ofthe sliding blocks are connected with fixing plates, and the lower ends of the fixing plates are provided with baffles. The safety limiting fixing device for the large-size logistics vehicle has the advantages that the first limiting block and the second limiting block are arranged, the positioning connecting plate is in threaded connection between the limiting blocks so that wheels of the logistics vehicle can be limited and fixed, the distance between the first limiting block and the second limiting block can be adjusted, the sliding blocks and the fixing plates are arranged, the baffles arehinged to the lower ends of the fixing plates, thereby being capable of providing relative thrust for the limiting blocks and increasing the effects of limiting and fixing, and antiskid pads can increase the friction force between the limiting blocks and the ground to avoid vehicle sliding.

The invention discloses an environment-friendly wear-resistant and tensile power cable, which includes a main cable and a slave cable, the master cable and the slave cable are arranged in parallel, and the master cable and the slave cable are connected through a connecting joint, and the slave cable includes a conductor and an insulating layer and a sheath, the sheath is embedded with 2 to 4 steel wires; the connecting joint and along the longitudinal direction of the cable are provided with through holes matching the steel wires, and the steel wires from the cable access end The wire is inserted into the through hole; and a limit groove is provided on the connecting joint near the through hole at the insertion end of the steel wire, and the steel wire stretches out of the through hole and is bent into the limit groove; A protective cover is provided outside the connecting joint. Make the main cable and the slave cable interface have strong wear resistance and tensile properties, and protect the cable from being damaged by external forces and shortening the service life.

The invention discloses a solar photovoltaic and photo-thermal comprehensive utilization device, and relates to the technical field of solar photovoltaics. The solar photovoltaic and photo-thermal comprehensive utilization device comprises a box body; first connecting blocks are fixedly mounted on the left side and the right side of the box body; a circular block is fixedly mounted at the bottom of the box body; and first fixing blocks are fixedly connected to the sides, away from each other, of the first connecting blocks. Through a reflection assembly, closing plates are pulled out of the first fixing blocks, then the first fixing blocks are rotated to the side faces of the box body through a first rotating shaft, a rotating rod is rotated through a handle, then a reflection plate is adjusted to a proper position, the reflection plate can enable a solar panel to absorb more sunlight through the sunlight reflection characteristic of the reflection plate, the closing plates can protect the reflection plate from being scratched to prevent the reflection effect from being reduced when the reflection plate is not used, the reflection plate can be preliminarily fixed and limited to a required specific angle through a first clamping block, and the phenomenon that the reflection plate deviates due to gravity and the like is avoided.

The invention discloses a high-speed steel wear-resistant collar. An inner roller sleeve is tightly fixed on a roller, inner collars and sealing collars which are arranged alternatively are clamped bytwo outer collars, the outer collars, the inner collars and the sealing collars jointly realize rolling, when some portion of the collar is seriously damaged and needs to be replaced, only the damaged collar portion needs to be disassembled for replacement, the whole collar does not need to be replaced, and the cost is saved. A steel wire rope group is matched with a first bolt head and a secondbolt head to fix the three collars, the outermost layer of the steel wire rope group is provided with an arc cutting angle, the arc surface with a diameter larger than the diameter of a single strandwire rope is formed, the contact surface between the steel wire rope group and the collar is expanded, and the limiting and fixing effect is improved. A gap between the steel wire rope group and a threaded hole is beneficial to heat dissipation, meanwhile, due to the fact that the collar is used for rolling in a high-temperature environment, the collar is subjected to thermal expansion at a high temperature, the gap between the steel wire rope group and the threaded hole can provide balance for thermal expansion, and cracking of the collar after thermal expansion is avoided.

The invention discloses a cut-off device for steel pipe machining and capable of conducting waste reduction treatment. The cut-off device comprises a base, a supporting frame, an electric push rod, acutting blade, a workbench and an electric telescopic rod, the supporting frame is fixedly installed at the upper end of the base, and the electric push rod is installed below the middle of the upperend of the supporting frame; and the outer end of a traction rope is fixedly installed at the inner end of a pull rod, the outer end of the pull rod is installed in a guide column, a placing block isinstalled on the inner side of a protective cover, a connecting frame is fixedly installed on the placing block, the placing block is fixedly installed at the upper end of the workbench, a dischargingopening is formed in the middle of the workbench, and a collecting chamber is mounted at the lower end of the discharging opening. According to the cut-off device for steel pipe machining and capableof conducting waste reduction treatment, a good limiting and fixing effect can be achieved when a steel pipe is cut off, the possibility that the steel pipe deviates and shakes is reduced, and meanwhile sparks generated in the machining process can be blocked and protected.

The explosion-proof low-voltage power compensation capacitor comprises an aluminum shell, a capacitor core and an insulating buckle cover, the capacitor core is fixedly installed in the aluminum shell, the insulating buckle cover is fixedly installed at the upper end of the aluminum shell, an upper fixing sleeve is arranged at the position, located on the upper portion of the capacitor core, of the inner side of the aluminum shell, and the upper fixing sleeve is fixedly installed on the outer side of the aluminum shell. A lower fixing sleeve is arranged on the inner side of the aluminum shell and located on the lower portion of the capacitor core, a wiring terminal is movably installed at the upper end of the insulation buckle cover, and the insulation buckle cover and the wiring terminal are connected through a terminal positioning sleeve. When the capacitor is damaged or the temperature reaches a corresponding critical point, the temperature sensor gives a corresponding electric signal to the outside, so that the system gives an action in advance, unnecessary loss is avoided, the capacitor has no polarity, and the main advantages are that the frequency characteristic is good and the frequency response is wide. And meanwhile, the cable has the advantages of small dielectric loss, high insulation resistance, stable performance, impact current resistance, high overload capacity and excellent self-healing performance.