63results about How to "Smooth assembly and disassembly" patented technology

The invention discloses a powder feeding and laying device applied to a high rate former, which consists of a powder storing case and a movable hopper, wherein, the powder storing case is an upper powder storing case positioned above the movable hopper and provided with a power outlet at the bottom; the powder storing case is fixed and stable; a movable baffle capable of automatically opening and closing the powder outlet is arranged at the bottom of the powder outlet; a movable bracket is fixed outside the movable hopper which moves to and fro from left to right along a horizontal line on a forming working platform of a high rate former by a driving mechanism; an unlocking component which is matched to be used with the movable bracket is arranged on the movable baffle; a receiving port at the upper part of the movable hopper corresponds to the powder outlet; a powder laying port is arranged at the bottom of the movable hopper, which is a rectangular port enclosed by two lateral baffles in the front and the back and two flexible doctor blades on the left and the right. The powder feeding and laying device applied to a high rate former has simple structure, handy assembly and deinstallation of all parts and easy regulation and control, the capability of modular working independently, rapid powder laying, and high reliability.

A power supply module suitable for a server is provided. The server includes a base and a main board. The main board is disposed on the base. The power supply module includes a frame and a first power connector. The frame is disposed on the base and adjacent to an edge portion of the main board. The first power connector is slidably disposed on the frame. When the first power connector slides to a first position, the first power connector protrudes from the frame and the edge portion of the main board is located between the first power connector and the base. When the first power connector slides to a second position, the first power connector is located in the frame.

The invention discloses an indoor unit of the air conditioner and the air conditioner. The indoor unit of the air conditioner comprises a shell, an air channel structure and a plurality of elastic reset devices. An arrangement cavity is formed in the shell. The shell comprises a back plate, a containing frame and a partition plate. The back plate extends in the vertical direction. The containing frame comprises a baffle and a supporting plate, wherein the baffle extends frontwards and downwards from the lower edge of the back plate, and the supporting plate extends backwards from the lower edge of the baffle. The partition plate is located in a gap of the baffle. The partition plate cooperates with the containing frame to form a containing cavity on the side with the back towards the arrangement cavity. The air channel structure is detachably arranged on the lower portion of the arrangement cavity. The upper portion of the air channel structure is provided with an air inlet connected with a heat exchanger of an indoor unit of the air conditioner and the lower portion of the air channel structure is provided with an air outlet. The air outlet structure extends from the upper side to the front side and the lower side in the shape of an arc protruding backwards. The elastic reset devices are connected with the partition plate and the back plate elastically, so that the partition plate abuts against the air channel structure, and assembly and disassembly of the air channel structure are guided. After the air channel structure is installed in place or retreats from the arrangement cavity, the elastic reset devices enable the partition plate to reset. The structural reliability of the indoor unit of the air conditioner can be improved.

The invention discloses a rotary tablet press. The rotary tablet press comprises a machine frame, wherein a main transmission device is arranged at the lower part of the machine frame; sealing doors are arranged at the periphery of the machine frame; a lower main pressure wheel device and an upright column sleeve are arranged on a middle plate at the middle part of the machine frame; an upper pressure wheel frame is supported on the upright column sleeve; an upper main pressure wheel device is fixedly arranged on the upper pressure wheel frame and is connected with a pressure sensor overload protection device; the upright column sleeve is fixedly connected with the upper part of a quick assembly and disassembly tablet discharging device close to a rotary table; the lower part of the quick assembly and disassembly tablet discharging device penetrates through an outer frame upright column and is fixedly connected with the outer frame upright column. The quick assembly and disassembly tablet discharging device is convenient to assemble and disassemble, tablets are smoothly discharged, and the phenomenon of tablet jumping is avoided. The quick assembly and disassembly tablet discharging device is mounted on the outer frame upright column at the corner of the machine, and the completeness and the sealing property of a door sheet are guaranteed. The pressure sensor overload protection device is small and simple in structure and accurate to adjust, the protection effect on a pressure sensor is achieved, and the protection effect on a punching rod can be achieved.

The invention provides an assembling and disassembling tool of a coupler. The tool is characterized by comprising a cylinder, a piston, a hydraulic connecting tube, a gasket, O-shaped rings and an outer hoop, wherein the cylinder is formed by connection of a small front hollow cylindrical part and a large rear hollow cylindrical part through a middle section in a hollow truncated cone shape; the front part of the cylinder can be closely matched with the coupler; the piston is arranged inside the cylinder, the outer surface of the piston is similar to the inner surface of the cylinder, and the piston is closely matched with the front and rear parts of the cylinder through the front and rear O-shaped rings; and the hydraulic connecting tube is arranged at the center of the piston. A connecting opening is formed in the middle section of the cylinder, and a gap which can be filled with hydraulic oil is formed between the middle section of the cylinder and the piston. A low-pressure pump connecting opening is formed in the middle section of the cylinder, and the rear end of the hydraulic connecting tube is connected with a high-pressure pump connecting opening. The invention further provides a method for assembling and disassembling the coupler with the tool. When the tool and the method are used for assembling and disassembling the coupler, the heavy manual labor can be omitted, and the coupler can be assembled and disassembled safely and stably, so that the tool and the method have good technical effects.

The invention discloses a handheld tool and a clamping device thereof. The clamping device of the handheld tool comprises an installation seat, a clamping unit, an operation assembly and a stop mechanism, wherein the clamping unit is used for fixing a work head in the axial direction; the operation assembly comprises an operation part and a driving part, and the operation part is movably connected with the installation seat, thereby driving the driving part to be matched with and break away from the clamping unit selectively in an operationable mode; the stop mechanism is arranged between the installation seat and the operation part; and when the driving part is matched with the clamping unit, the stop mechanism restrains the driving part from breaking the matching with the clamping unit. The handheld tool is provided with the stop mechanism, guarantees smooth dismounting and mounting of the work head, and avoids the situation that in the dismounting and mounting process of the work head, the operation part moves further, the driving part breaks the matching with the clamping unit, and the work head can not be dismounted or mounted normally.

The invention provides an airplane wing assembly. The airplane wing assembly comprises a wing, a small wing and a connection piece, wherein the wing is provided with a wing box; the small wing is located at a wing tip of the wing and is connected with the wing by the wing box; the connection piece comprises a butt joint rib which is assembled with the wing box and a central connector which is assembled with the small wing; the butt joint rib is provided with a first shearing pin hole and a second shearing pin hole; a first shearing pin and a second shearing pin are pressed into the first shearing pin hole and the second shearing pin hole respectively to form interference fit; the central connector is provided with a first lining hole and a second lining hole; a first lining and a second lining are pressed into the first lining hole and the second lining hole respectively to form interference fit; and the position relation between the first shearing pin hole and the second shearing pin hole is the same as the position relation between the first lining hole and the second lining hole, so that small interference fit can be realized between the first shearing pin and the second shearing pin and between the first lining and the second lining when the small wing provided with the central connector moves towards the wing box provided with the butt joint rib and when the first shearing pin and the second shearing pin are inserted into the first shearing pin hole and the second shearing pin hole in the central connector respectively.

The invention belongs to the technical field of spring machining equipment, and particularly relates to a spring chamfering machine. The machine comprise a machine frame, wherein a feeding hopper is fixed at the top of the machine frame, a material guide plate connected with the feeding hopper is arranged at the top of the machine frame, the right side of the material guide plate is bent to a slope, and a plurality of magnetic strips are uniformly arranged on the slope of the material guide plate; a clamping roller driven by a first motor is arranged in the machine frame, and a plurality of placing grooves are uniformly formed in the clamping roller in the circumferential direction; an arc-shaped pressing plate is arranged at the lower end of the material guide plate, the pressure plate isarranged on the front-rear face board of the material guide plate, the gap between the pressing plate and the clamping roller is gradually reduced from the position A to the position B, and when a spring moves to the position B, the spring is just clamped through the pressing plate and the clamping roller; two cylindrical chamfering blocks driven by a second motor are arranged in the machine frame, a chamfer is arranged at the front end of each chamfering block, the two chamfering blocks are front-back symmetrically distributed on the two sides of the clamping roller correspondingly, and therotating directions of the two chamfering blocks are opposite; and a discharging plate is arranged at the position, located below the clamping roller, of the machine frame, and four through grooves are uniformly formed in the discharging plate.

The invention discloses a lubricating agent for tyre assembling and a preparation method thereof, which relate to the technical field of tyre assembling. The lubricating agent is prepared from the following raw materials in parts: 90 to 100 parts of base oil, 70 to 80 parts of emulsified wax, 55 to 65 parts of glycerol, 45 to 50 parts of sodium lauryl sulfate, 40 to 45 parts of auxiliaries, 25 to 30 parts of solid additive, and 75 to 95 parts of deionized water. The lubricating agent provided by the invention has excellent lubricating performance, enables tyre disassembling and assembling to be smooth, prevents from scratching a tyre during operation, protects the tyre, and prevents a rim from being scratched and deformed.

The invention provides an agricultural grain hoist, which can easily realize grain hoisting, reduce labor intensity, has simple structure, low cost, and convenient operation and disassembly. The agricultural grain hoist includes a rotating mechanism, a lifting mechanism and a grain hopper. The rotating mechanism includes a slewing platform, a fixed platform and a slewing support bearing. The hoisting mechanism includes a hoisting drive mechanism and a boom. Plate guide rope slider unit, the roller is connected to the power output end of the geared motor, the guard plate guide rope slider unit includes a guard plate, a slideway and a guide rope slider, the guard plate is fixed on the rotary platform, and has a cavity for accommodating the roller , the slideway is fixed on the guard plate, the guide rope slider is embedded on the slideway, and the surface is provided with a wire rope perforation, one end of the wire rope is fixed on the drum through the wire rope perforation, and the other end is fixed on the pulley and the grain bucket fixed on the boom. connect.

The invention discloses a spline shaft mechanism for an agricultural machine and low in use cost. The spline shaft mechanism comprises a spline shaft, a spline shaft sleeve, a connecting segment and ashaft sleeve. The spline shaft sleeve is arranged on the outer ring of the spline shaft in a sleeving manner. Three spline outer teeth are fixedly arranged on the outer ring of the spline shaft in around array shape. Three spline outer ring tooth grooves are formed in the inner ring of the spline shaft in a round array shape. The surface of the spline shaft is sleeved with the spline shaft sleeve, the spline shaft sleeve is fixedly limited on the spline shaft through a fixing ring on the left end, the spline shaft sleeve replaces the spline shaft to be in contact with an outer device, wear of the spline shaft is reduced, and the service life of the spline shaft is prolonged; when damaged, the spline shaft sleeve can be independently replaced, and the use cost is reduced; a limiting convex ring is connected to an outer ring threaded groove in the left end of the connecting segment through threaded fit, demounting and mounting are convenient, and the aim of abutting against the shaft sleeve is achieved; and the limiting convex ring and the connecting segment are designed independently, replacement is convenient, the defect that the overall body needs to be replaced during wear is avoided, and the use cost is reduced.

The invention discloses a rail dragging and lifting method for rail laying. An arm lifting device is arranged at the rear end of a tractor body, an inverted U-shaped rail clamping device is arranged on the arm lifting device, and a detachable rolling shaft is arranged at the bottom of the inverted U-shaped rail clamping device; when a rail is dragged, one end of the steel rail is clamped into an inverted U-shaped rail clamping device, then a rolling shaft is connected to the bottom of the inverted U-shaped rail clamping device, a wedge block is plugged between the inner top of the inverted U-shaped rail clamping device and the top of the steel rail, the wedge block, the inverted U-shaped rail clamping device and the rolling shaft are used for fixing one end of the steel rail, and then a traction vehicle body is controlled to move to drag the steel rail; and when the rail is lifted, one end of the steel rail is clamped into the inverted-U-shaped rail clamping device, the rolling shaft is connected to the bottom of the inverted-U-shaped rail clamping device, then the lifting arm device is controlled to ascend, one end of the steel rail is lifted, the traction vehicle body is controlled to move, and the rolling shaft rolls along the bottom of the steel rail, so the steel rail is gradually lifted from one end to the other end. The labor intensity of workers is reduced.

The invention discloses an air-conditioner wall-hanging unit and an air-conditioner. The air-conditioner wall-hanging unit comprises a shell, a heat exchanger, an air flue assembly and a water receiving groove, and a water receiving disc is arranged on the shell; a containing cavity is formed inside the shell; the heat exchanger and the air flue assembly are installed in the containing cavity; the water receiving groove is arranged below the heat exchanger and is detachably connected with the shell, a water drainage pipe is arranged at the groove bottom of the water receiving groove and extends into the water receiving disc, and the side wall of the water receiving disc is located on a motion track of the water drainage pipe in the water receiving groove demounting and mounting process; and the water receiving disc is pivoted with the shell through a horizontally-arranged rotating shaft and can forwards or backwards rotate around the rotating shaft. By means of the technical scheme, mounting and demounting of the water receiving groove can be facilitated.

The invention discloses an underground electric control water plugging production increasing switching device, and relates to the technical field of oil field underground tools. An upper connector, anouter barrel, a lower connector, a center pipe, a power module, a motor and a valve mechanism are included. The end, connected with the outer barrel, of the lower connector is provided with a gear groove. A combined shaft hole is formed in the groove bottom of the gear groove. The gear groove is internally provided with a gear. The center line of the gear is perpendicular to the center line of the outer barrel. The center of one side of the gear is provided with a shaft end in a protruding manner. The shaft end is inserted in the combined shaft hole. A wrench hole in which a six-ridge wrenchis inserted is formed in the center of the other side of the gear. A tooth disc engaged with the gear is machined at the lower end of the outer barrel. The combined shaft hole at least comprises two shaft holes in which the shaft end is inserted, the shaft holes are arranged along the straight line at equal intervals, and every two adjacent shaft holes are overlapped. Through the underground electric control water plugging production increasing switching device, an electric water plugging tool can be directly maintained in the well site and does not need to be transported back to a workshop, and the construction efficiency is greatly improved.

The invention discloses a pipe connection accessory which comprises an accessory body and a staple bolt. The accessory body is provided with a connector used for being connected with a pipe. The connector is provided with an insertion hole for containing the pipe. The staple bolt is provided with an elastic groove extending from the head to the tail, a radial clamping groove is arranged in the middle of the staple bolt, the staple bolt is inserted in a through hole penetrating through the connector and the pipe, and the radial clamping groove tightly clamps the connector and the pipe on the edge of the through hole. The pipe connection accessory has the advantages of being simple in structure, convenient to assemble and disassemble and capable of being reused.

The invention discloses lactobacillus plantarum fermentation equipment and a working method, relates to the technical field of fermentation of lactobacillus plantarum, and aims to solve the problems that the conventional fermentation equipment for lactobacillus plantarum can only play a role in standing fermentation, has a single function and causes long fermentation time in winter. Three supporting legs are mounted below a fermentation tank main body, the number of the supporting legs is three, and the three supporting legs are all connected with the fermentation tank main body in a welding manner; a waterproof heating jacket is fixedly mounted outside the fermentation tank main body; a water inlet valve is arranged at the upper end of one side of the waterproof heating jacket; a water outlet valve is arranged at the lower end of one side of the waterproof heating jacket; a water bath kettle heating coil pipe is arranged in the waterproof heating jacket; the water bath kettle heatingcoil pipe is fixedly connected with the inner wall of the waterproof heating jacket; and wiring ends are fixedly installed at the two ends of the water bath kettle heating coil pipe, and the wiring ends penetrate through and extend to the waterproof heating jacket.

The invention relates to a hairpiece for a hair fluffy feel enhancing part capable of being used for a part covered by a small amount of hair or bringing impact effects (dyeing, etc.) to a part of the hair and achieving the effects of enhancing fluffy feel by enabling the hair to upwarp while being worn, and particularly relates to a hairpiece for a hair fluffy feel enhancing part capable of mounting a hair part on and dismounting the hair part from a fluffy body part.

The present invention relates to a razor comprising: a cartridge main body which has one portion of the front and the rear thereof opened; a connector mounting part which comprises a first coupling part and a second coupling part, the first coupling part being integrally formed on the rear of the cartridge main body, and the second coupling part being integrally formed on the rear of the cartridgemain body and disposed so as to be spaced apart from the first coupling part; a holder mounting part which is integrally formed on the rear of the cartridge main body and is positioned between the first and second coupling parts; a handle assembly comprising a handle body and a holder, the handle body being held by a user, and the holder being rotatably positioned on the upper side of the handlebody and detachably coupled to the holder mounting part; and a connector which is coupled to the first and second coupling parts, thereby surrounding at least one portion of the holder coupled to theholder mounting part.

The invention discloses a waterproof portable power supply device. The waterproof portable power supply device comprises a hard shell and a flexible rubber sleeve, wherein a battery, a circuit board and an interface are mounted in he hard shell; the hard shell comprises a main shell and an end cover; an opening is formed in the upper end of the main shell, the end cover is sealed at the opening, the outside of the main shell is coated with the flexible rubber sleeve, and the upper edge of the flexible rubber sleeve is compressed by the edge of the end cover to coat the periphery of the opening. According to the design, the flexible rubber sleeve and a sealing ring are integrated together, so that the phenomena that the flexible rubber sleeve is instable and easy to release in a use process are eliminated, the buying cost, the management cost and the mounting cost of the sealing ring are saved, and meanwhile, a portable power supply has waterproof property; the flexible rubber sleeve comprises two sealed parts which are simultaneously compressed to the main shell by the end cover, so that the waterproof sealing property and the mounting stability of the flexible rubber sleeve can be further enhanced; the flexible rubber sleeve is further provided with a flexible rubber cover capable of being opened and closed, so that external moisture ad dust cannot easily enter the portable power supply, and the service life of the portable power supply is prolonged.

The invention provides a multifunctional wrench applicable to narrow operation space, which comprises a handle, a rod arm, a connecting rod, a bevel gear steering mechanism and a connector, wherein the handle is fixed at the front end of the rod arm; the rear end of the rod arm is assembled with the front end of the connecting rod; the rear end of the connecting rod is assembled with the front end of the bevel gear steering mechanism; the rear end of the bevel gear steering mechanism is assembled with the connector; and the connector is matched with a screwed fitting to be dismounted. The multifunctional wrench provided by the invention is applied to maintenance of mechanical devices and electric facilities. Because of avoiding dismounting parts near the screwed fitting to be dismounted, the multifunctional wrench provided by the invention shortens the maintenance time of the device and greatly improves the working efficiency on one hand, and maintains the original assembling precision of the device and guarantees the normal running of the device on the other hand.

The invention relates to a support-jacking circulation system and a three-dimensional prefabricated total-fabricated concrete structure method. When the three-dimensional prefabricated total-fabricated concrete structure method is used for prefabricating a total-fabricated concrete structure, the situation that the joint core area of the concrete structure is guaranteed to be complete is taken asa precondition in each layer of the concrete structure, the concrete structure is divided into a plurality of prefabricated units, and on the basis that dismantling and mounting between all prefabricated units in all the layers are smooth, it is further guaranteed that the corresponding prefabricated units in the upper and lower layers are smooth in dismantling and mounting. The three-dimensionalprefabricated total-fabricated concrete structure method is matched with the liftable support-jacking circulation system, prefabricating is conducted from bottom to top in a circulation mode until reaching the highest layer of a design project, the prefabricated units divided by the joint core area of the concrete structure is convenient construct, the strength of the joint core area can be directly improved, and the anchoring and connecting intensity of rebars can also indirectly improved. In summary, factory prefabricating and on-site assembly can be separated through the support-jacking circulation system and the three-dimensional prefabricated total-fabricated concrete structure method, the purpose that 'reliability is handed to a factory, convenience is sent to a site' is achieved, and finally the reliability and convenience of the total-fabricated concrete structure are guaranteed.

The invention provides a multifunctional wrench applicable to narrow operation space, which comprises a handle, a rod arm, a connecting rod, a bevel gear steering mechanism and a connector, wherein the handle is fixed at the front end of the rod arm; the rear end of the rod arm is assembled with the front end of the connecting rod; the rear end of the connecting rod is assembled with the front end of the bevel gear steering mechanism; the rear end of the bevel gear steering mechanism is assembled with the connector; and the connector is matched with a screwed fitting to be dismounted. The multifunctional wrench provided by the invention is applied to maintenance of mechanical devices and electric facilities. Because of avoiding dismounting parts near the screwed fitting to be dismounted, the multifunctional wrench provided by the invention shortens the maintenance time of the device and greatly improves the working efficiency on one hand, and maintains the original assembling precision of the device and guarantees the normal running of the device on the other hand.

The invention discloses disassembling and assembling equipment of a steel ladle long nozzle, a disassembling and assembling device thereof, a disassembling and assembling system thereof and a disassembling and assembling method thereof. The disassembling and assembling method of the steel ladle long nozzle comprises the steps that position information of a target located on one side of a steel ladle lower nozzle is obtained; coordinate information of the steel ladle lower nozzle is obtained according to the position information; the coordinate information is converted into position coordinates under a coordinate system of a robot; according to the position coordinates, the robot is controlled to achieve disassembling and assembling of the steel ladle long nozzle relative to the steel ladle lower nozzle. According to the disassembling and assembling method of the steel ladle long nozzle, the steel ladle long nozzle can be assembled and disassembled through the robot compared with the steel ladle lower nozzle, manual operation is avoided, and the operation safety can be improved.

The invention discloses an underground electric control water plugging production increasing switching device, and relates to the technical field of oil field underground tools. An upper connector, anouter barrel, a lower connector, a center pipe, a power module, a motor and a valve mechanism are included. The end, connected with the outer barrel, of the lower connector is provided with a gear groove. A combined shaft hole is formed in the groove bottom of the gear groove. The gear groove is internally provided with a gear. The center line of the gear is perpendicular to the center line of the outer barrel. The center of one side of the gear is provided with a shaft end in a protruding manner. The shaft end is inserted in the combined shaft hole. A wrench hole in which a six-ridge wrenchis inserted is formed in the center of the other side of the gear. A tooth disc engaged with the gear is machined at the lower end of the outer barrel. The combined shaft hole at least comprises two shaft holes in which the shaft end is inserted, the shaft holes are arranged along the straight line at equal intervals, and every two adjacent shaft holes are overlapped. Through the underground electric control water plugging production increasing switching device, an electric water plugging tool can be directly maintained in the well site and does not need to be transported back to a workshop, and the construction efficiency is greatly improved.

The invention discloses an oil cylinder dismounting machine, comprising a machine base, a push-pull power mechanism and a cylinder clamping mechanism are arranged on the said machine base, a lifting mechanism is arranged on the said machine base, and the cylinder clamping mechanism is installed On the lifting mechanism; the machine base is provided with a positioning seat, the positioning seat, the cylinder body clamping mechanism and the push-pull power mechanism are distributed in sequence, and the positioning seat is provided with a detachable tool for removing the baffle or a tool for installing the baffle . Install the cylinder clamping mechanism on the lifting mechanism. After the cylinder clamping mechanism clamps the cylinder well, the height of the cylinder can be adjusted through the lifting mechanism so that the centers of the cylinder, piston rod, and push-pull power mechanism are at the same height , to ensure good assembly accuracy. By setting the positioning seat and removing the baffle tooling (or installing the baffle tooling), the removal of the baffle tooling and the installation of the baffle tooling can play a role in blocking the axial movement of the cylinder, so that the cylinder remains stable and is conducive to smooth disassembly. installed to improve efficiency.

The invention discloses a rotary tablet press. The rotary tablet press comprises a machine frame, wherein a main transmission device is arranged at the lower part of the machine frame; sealing doors are arranged at the periphery of the machine frame; a lower main pressure wheel device and an upright column sleeve are arranged on a middle plate at the middle part of the machine frame; an upper pressure wheel frame is supported on the upright column sleeve; an upper main pressure wheel device is fixedly arranged on the upper pressure wheel frame and is connected with a pressure sensor overload protection device; the upright column sleeve is fixedly connected with the upper part of a quick assembly and disassembly tablet discharging device close to a rotary table; the lower part of the quick assembly and disassembly tablet discharging device penetrates through an outer frame upright column and is fixedly connected with the outer frame upright column. The quick assembly and disassembly tablet discharging device is convenient to assemble and disassemble, tablets are smoothly discharged, and the phenomenon of tablet jumping is avoided. The quick assembly and disassembly tablet discharging device is mounted on the outer frame upright column at the corner of the machine, and the completeness and the sealing property of a door sheet are guaranteed. The pressure sensor overload protection device is small and simple in structure and accurate to adjust, the protection effect on a pressure sensor is achieved, and the protection effect on a punching rod can be achieved.

The invention provides a vacuum degree detection device of vacuum equipment, the vacuum degree detection device comprises a vacuum degree sensor, one end of the vacuum degree sensor is provided with a thread part, the outer surface of one end of the vacuum degree sensor close to the thread part is sleeved with a regular hexahedron, and the vacuum degree sensor is sleeved with two four-side frames capable of forming a regular hexahedral frame. Strip-shaped openings are formed in the two ends of the four-face frame, strip-shaped plates are inserted into the strip-shaped openings, rubber pads are installed at the two ends of each strip-shaped plate, penetrating holes are formed in the upper surfaces of the interiors of the strip-shaped openings, two threaded holes matched with the penetrating holes are symmetrically formed in the upper surfaces of the strip-shaped openings, and connecting screws are arranged in the penetrating holes. Compared with the prior art, the device has the following beneficial effects that a wrench and other tools are prevented from making contact with the regular hexahedron, the effect of protecting the regular hexahedron is achieved, after the four-side frames are abraded, only the two four-side frames need to be separated and replaced, and local replacement of easily-damaged parts is achieved.