863results about How to "Prevent sliding" patented technology

The invention relates to the field of LED display screen installation and splicing, and discloses an arc-shaped lock capable of adjusting an LED display screen box gap, the arc-shaped lock comprises a first lock seat and a second lock seat, the inner side of the first lock seat is in sliding connection with a first lock cylinder, the inner side of the second lock seat is in sliding connection with a second lock cylinder, the middle of the first lock cylinder is provided with a locking assembly, and the locking assembly is arranged on the inner side of the second lock seat. A fixing assembly is fixedly installed on the side face of the first lock cylinder, the locking assembly comprises a clamping column, the clamping column is arranged in the middle of the first lock cylinder and the middle of the second lock cylinder, a sliding groove is formed in the clamping column, and a pin is slidably connected into the sliding groove. The clamping blocks are opened to be clamped into the annular groove in the second lock cylinder, and internal buckling and axial limiting of the two lock cylinders are achieved. And in cooperation with a screwing structure of the nut and the external thread of the clamping column, continuous axial pressing force can be applied to the surface of the lock cylinder, and the flatness of the splicing face of the LED display screen and the stability of the overall structure are ensured.

The utility model provides a nested type grinding roller structure which comprises an assembling layer, a connecting layer and a grinding layer which are sequentially arranged in an annular nested mode from inside to outside, and concave-convex structures in the horizontal direction and the vertical direction are arranged on the outer surfaces of the assembling layer and the connecting layer respectively. The minimum inner diameter of the inner surface of the grinding layer is larger than the maximum inner diameter of the outer surface of the assembly layer. Cheap carbon steel is used in the inner layer, high-chromium alloy with high cost is used in the outer layer, and the problems of high cost, waste of raw materials and the like in the abrasion replacement process due to the fact that the whole body is cast by using the high-chromium alloy are solved; after the fixing of the assembly layer and the grinding layer is removed, the assembly layer can be taken out from the axial direction and replaced with a new grinding layer, so that a new assembly layer does not need to be cast again, the processing time of a new product is saved, the replacement efficiency is improved, and meanwhile, the cost is reduced to a certain extent by repeatedly using the assembly layer.

The utility model discloses a rescue air cushion convenient to carry, including box, air bag pad and movable board, the inside of box is provided with the cavity, and the one side of box is provided with the notched of being linked with the cavity, and the upper and lower both ends of notched inboard all are through the pivot respectively installed with roll axle no.

This utility model discloses a rehabilitation device for lower limb dysfunction with adjustable angle, relating to the field of rehabilitation technology. It includes a base frame and a computer operating unit. The computer operating unit is installed on the top of the base frame, which has an adjustable support unit on top and a body support unit on top of the adjustable support unit. The device utilizes four square blocks on both sides inside the foot pedal. Two of the blocks have Velcro fasteners (first type) on top, and the other two have Velcro fasteners (second type) on top. During use, the patient places their foot on the foot pedal, and the Velcro fasteners (first and second types) securely fix the foot to the pedal. This effectively prevents the foot from slipping or becoming unstable on the foot pedal due to weakened muscle strength or poor balance during rehabilitation training, thus ensuring the smooth progress and safety of rehabilitation training.

The utility model discloses a kind of composite fireproof insulation board laminating device, the utility model relates to thermal insulation board laminating technical field.It is laminated mechanism for composite fireproof insulation board and is provided on the mounting base, laminated mechanism includes: press-fit component, including the support rod fixed with both side walls of mounting base, the upper end of the support rod is provided with the mounting plate connected by lifting assembly, the lower end surface of the mounting plate is provided with the pressure plate main body connected by elastic component, the lower end inside of the pressure plate main body is provided with rectangular frame slot, the inside of the rectangular frame slot is provided with the rectangular pressure plate connected by telescopic component, the utility model is driven rectangular pressure plate telescopic by second hydraulic rod, realize the pertinence pressure to the edge of thermal insulation board, since the edge of thermal insulation board is prone to the problem of not firm combination when laminating, can effectively improve the compaction degree and bonding strength of edge, avoid edge curling, delamination and other quality problems.

The utility model relates to sofa manufacturing technical field especially is involved in the enhancement design of packing and transportation of sofa, a full dismounting sofa bed, including support base and sofa cushion subassembly, its characterized in that: support base includes support frame, support bottom plate and is located at the detachable supporting leg of support frame four corners, sofa cushion subassembly includes seat cushion, back cushion and side stop pad, seat cushion is detachably connected with support bottom plate through magnetic connection component, and the detachable connecting component is equipped between side stop pad and support bottom plate, back cushion and support bottom plate.

The utility model relates to the technical field of medicament mixing assistors, and discloses a double-component medicament opposite-extrusion mixing assistor which comprises a transverse plate, a transverse plate and a transverse plate, the two fixed seats are oppositely mounted on two sides of one end of the transverse plate; the extrusion roller is rotationally mounted between the two fixed seats through a rotating shaft; the clamping groove is formed in the outer wall of the extrusion roller in the axial direction of the extrusion roller; and the pressing mechanism is arranged in the clamping groove and used for pressing the bag tail in the clamping groove. According to the double-component medicament opposite-extrusion mixing assist device, the tail part of a medicament bag is fixed in the clamping groove, and when the extrusion roller rotates, the extrusion force generated when the bottom of the medicament bag penetrates through a gap between the extrusion roller and the transverse plate is utilized, so that the medicament bag can be uniformly extruded, time and labor are saved, and the mixing efficiency of the double-component medicament is improved.

The present disclosure provides a transport vehicle for transporting a heater, comprising a vehicle frame, a fixing plate is arranged on the vehicle frame, a circular groove for accommodating a ring-shaped heater is arranged on the fixing plate, a plurality of fixing columns are arranged in the circular groove, and each fixing column can clamp the ring-shaped heater with the inner circumferential surface of the circular groove. In the present disclosure, the heater is clamped between each fixing column and the circular groove and the fixing plate to limit the relative position of the heater and the fixing plate, so as to avoid the heater from falling off or sliding off the fixing plate during the movement of the transport vehicle. Therefore, the present disclosure avoids the problems of employee scalding and heater bumping or damage during the traditional carrying process, thereby reducing the maintenance time and cost caused by equipment damage and improving the overall carrying efficiency.

The utility model discloses a carrying device for sale of an aviation ticket vending machine, which belongs to the field of aviation and comprises a bottom frame, a pull rod is rotatably connected to one side of the bottom frame, two connecting shafts are symmetrically arranged on the inner wall of the bottom frame, and supporting plates are rotatably connected to the opposite surfaces of the two connecting shafts. Two symmetrically-arranged limiting pieces are arranged at the tops of the two supporting plates, an X-shaped connecting piece is arranged between the two supporting plates, connecting columns are fixedly connected to the opposite faces of the ends, close to the bottom frame, of the two supporting plates, and connecting sleeves are fixedly connected to the outer portions of the centers of the connecting columns; by arranging the connecting rods, the supporting plate can be supported in the process of carrying the ticket selling machine, so that the ticket selling machine can incline towards the supporting plate and make contact with the supporting plate, the ticket selling machine can be easily and flatly placed on the top of the supporting plate, then the transportation stability of the ticket selling machine is guaranteed, meanwhile, the ticket selling machine can shuttle in a small channel, and convenience is improved.

The utility model discloses an adult paper diaper of replaceable core body belongs to paper diaper technical field, including the trousers body, the waist of trousers body is provided with the fixed part of fixed effect, the inside of trousers body is provided with the core body, the lateral surface of trousers body is evenly provided with a plurality of positioning strips, and the adjacent two positioning strips are parallel to each other, and a plurality of positioning strips are arranged in a straight line, and the both ends of positioning strip are fixedly connected with the lateral surface of trousers body, and the positioning groove is formed between positioning strip and trousers body, and the positioning piece is arranged in a plurality of positioning grooves, and the width of positioning piece is same with positioning groove, and one end of positioning piece is fixedly connected with one end of core body side surface, and the other end of positioning piece is detachably cooperated with the other end of core body side surface, and the first adhesive part is arranged on the side surface of core body, and the first adhesive part is bonded with trousers body, can realize the accuracy of core body and trousers body installation position.

The utility model discloses a kind of anti-inclined scaffolds, including two portal frames, the outer wall of portal frame is equipped with thread groove, the outer wall of thread groove is threadedly connected with thread sleeve, two first sliding sleeves and two second sliding sleeves are sleeved and slid on the portal frame, first sliding sleeve is below thread sleeve, fixedly connected with inclined support between first sliding sleeve and second sliding sleeve, the bottom of inclined support is fixedly connected with support plate, the outer wall of portal frame is fixedly connected with multiple guide rails, the outer wall of second sliding sleeve is equipped with multiple guide slots.The utility model is by pulling inclined support, and it is placed to be with portal frame by pulling inclined support to degree, then, thread sleeve is screwed, and under the action of the thread connection of thread groove, so that thread sleeve moves downward, to push first sliding sleeve to move downward, to drive inclined support to move downward, so that support plate is contacted with ground, to increase the support area of scaffold, to prevent the inclination of scaffold.

The utility model relates to a graphite crucible belongs to high temperature smelting equipment technical field. Among them, graphite crucible includes: the crucible body has the first wall body and second wall body with the wall thickness is formed, and the first wall body is located the outside of second wall body, the top of second wall body is lower than the top of first wall body, to make second wall body and first wall body form the step between, the cover body, cover is established on the step, among them, the recess is provided on the first wall body, and the recess is along the circumference of the crucible body and sets up, and the depth of recess is greater than 0 and is less than or equal to 10. Through the recess along the circumference of the crucible body and sets up, to make the gripper of mobile equipment when the graphite crucible is clamped, the gripper can be held at the recess, to realize the quick positioning of the crucible body, simultaneously, still can make at least partial gripper can be housed in the recess, with the recess forms the card and holds, avoids the sliding between the gripper and the crucible body, to avoid the occurrence of the fall of the crucible body, improves the service life of the crucible.

The bathroom mirror cabinet convenient to store comprises a cabinet shell, a mirror is fixedly connected to the front end of the cabinet shell, demisting assemblies are arranged at the positions, located at the upper end and the lower end of the mirror, of the front end of the cabinet shell, an insertion opening is formed in one side of the cabinet shell, a storage cabinet is arranged on the insertion opening, and a fixing assembly is arranged at the bottom end of the cabinet shell. A plurality of supporting plates are fixedly connected to the interior of the storage cabinet, and drainage assemblies are arranged on the supporting plates. According to the mirror cabinet, mist generated on the surface of the mirror is removed through the demisting assembly, the situation that the mirror cannot be used due to mist shielding is avoided, the storage cabinet drawn out of the cabinet shell is fixed through the fixing assembly, the storage cabinet is prevented from sliding, and due to the design, a user does not need to frequently open and close the mirror cabinet when needing to frequently take articles in the storage cabinet.

The application discloses an anti-skid air column bag and a manufacturing process thereof, relates to the field of article packaging, and aims to solve the problem that an ice layer is formed on the surface of the air column bag during cold chain transportation, and it is inconvenient for people to exert force and grab the air column bag. Technical scheme points are as follows: the bag body is provided with a plurality of air cavities one arranged in an array, an air inlet channel is arranged on one side of the bag body, air valve membranes are arranged between the air inlet channel and the air cavities one to be in communication with each other, elastic sheets are fixedly connected to the surface of the bag body at the air cavities one, the surface of the elastic sheet is a plane in a natural state of the bag body, the air cavities one are inflated to make the elastic sheet bent and form a plurality of protrusions on the elastic sheet after the bag body is inflated, the elastic sheet is pushed out to form the protrusions after the air cavities one are filled with air and inflated, and the protrusions of the plurality of elastic sheets can increase the contact friction between the palm and the bag body during the carrying process, so that the bag body is prevented from sliding in the palm.

The utility model relates to the technical field of takeoff and landing protection equipment, and discloses takeoff and landing protection equipment for an unmanned aerial vehicle, which comprises an unmanned aerial vehicle body, and a display connection signal screen is fixedly mounted on the outer wall of the unmanned aerial vehicle body. The foldable light and thin mounting plate is rapidly folded and unfolded through the rotating hinge and the small hydraulic push rod, in the flight state, the mounting plate is folded and tightly attached to the fuselage, air resistance is effectively reduced, the flight efficiency is improved, before landing, the hydraulic push rod rapidly pushes the mounting plate to be unfolded to the horizontal position, and the supporting area is enlarged; the unmanned aerial vehicle is in direct contact with the ground in cooperation with an anti-skid balancing weight, the friction force between the unmanned aerial vehicle and the ground is increased, the unmanned aerial vehicle is effectively prevented from sliding or rollover after landing, meanwhile, an inflation pump is arranged in an inflation box to inflate a buffering air bag, a flexible protection layer surrounding the unmanned aerial vehicle is formed, falling impact is effectively relieved, and the unmanned aerial vehicle is protected from falling. And the effect of improving the protection safety is achieved.

The utility model belongs to the technical field of bedding, specifically discloses a combined quilt, which comprises at least two quilt bodies from top to bottom, and the edges of the quilt bodies are provided with zippers, the quilt bodies are detachably connected through the zippers to form a combined quilt, a shielding edge is arranged around the uppermost quilt body, and the zipper on the uppermost quilt body is located between the shielding edge and the quilt body, when the quilt bodies are connected through the zippers to form the combined quilt, the shielding edge naturally falls to cover the side edges of the quilt bodies and the zippers of the combined quilt, the zippers are completely hidden, and the feeling of a standing quilt is presented, which not only makes the appearance of the quilt more neat and beautiful and the visual effect better, but also effectively prevents dust from entering the gaps of the zippers, reduces the jamming problem caused by dust accumulation of the zippers, and further improves the integrity, durability and protection performance of the product.

The utility model provides a kind of wound dressing fixing band, belong to dressing fixing band application technical field.The wound dressing fixing band, including dressing bandage and the dressing area being equipped with the bottom of dressing bandage, it is characterized by: two empty ways are equipped with in the inside two sides of dressing bandage, two medical ropes are worn in the inside two empty ways, and two medical ropes two ends are integrally made into the pulling head, and are connected by pulling head mutual rope knot, wherein, by the two empty ways being equipped with in the inside two sides of dressing bandage and the reinforcing ring being equipped with in the inside two ends empty way and the combination design of medical rope and pulling head, user can adjust the tightness of dressing by pulling the pulling head of medical rope two ends, and medical rope is connected by rope knot, effectively solve the problem that dressing is easy to slide or overflow from the edge of fixing band.

The utility model relates to the technical field of municipal construction accessories discloses a protection device for pipeline construction anti -collision, including longitudinal steel pipe, circular arc steel pipe, multidirectional pulley, anti -collision steel strip and oblique steel pipe, the longitudinal steel pipe has many, many longitudinal steel pipes are parallel to the length direction of pipeline, at least two longitudinal steel pipes are opposite other and are located downside, and its bottom is provided with multidirectional pulley, at least one longitudinal steel pipe is opposite other and is located upside, and it connects two longitudinal steel pipes with pulley through oblique steel pipe, two longitudinal steel pipes with pulley are connected through circular arc steel pipe between, the longitudinal steel pipe or oblique steel pipe stretches out anti -collision steel strip outward, the utility model aims at providing more effective, reliable and economic and practical anti -collision solution for pipeline construction.

The utility model discloses a kind of milking hall drying devices, including support, setting in the support medicated bath and being evenly set in the spray washing device of the medicated bath in, massager, the medicated bath includes inner basin and is placed in the outer basin of the inner basin, and with the outer basin between the inner basin constitutes air supply cavity, the outer basin is provided with air inlet, the air inlet is communicated with a air supply device by pipeline, the inner basin is provided with, the air outlet is located above the massager. Its by setting air supply cavity and air outlet on medicated bath, after medicated bath is completed, milk cow can be air supply to air outlet by air supply device, and the teat of milk cow is air dried, avoid in subsequent milking process teat and milk liner inner wall slide, reduce the damage of relative sliding of teat and milk liner inner wall to cow udder;Reduce air leakage, accelerate the speed of milk.

This utility model belongs to the technical field of thread forming machines, and in particular to a thread forming machine with a support mechanism. It includes a worktable, a support mechanism mounted on the worktable, and a thread forming assembly. The support mechanism includes a support base, a support arm, an adjustable bracket, a horizontal drive assembly, and a support head. The support base is fixedly connected to the worktable by bolts. The support arm is slidably connected to the support base via the adjustable bracket. The adjustable bracket is slidably connected to a slide rail via a slider. The telescopic end of the horizontal drive assembly is fixedly connected to the adjustable bracket. The support head is fixedly connected to the telescopic end of the support arm. This utility model features an adjustable support mechanism, which can adapt to workpieces of different sizes and shapes. The anti-slip design of the support head increases friction with the workpiece, effectively preventing workpiece slippage. It supports the workpiece from different directions, further improving the stability of the support and thus ensuring the accuracy and quality of thread processing.

The utility model discloses an acetylene production generator which comprises a generator body, a bottom plate is arranged at the bottom of the generator body, and the generator body is connected with the bottom plate through a buffer structure. The device is reasonable in structure and novel in design, when the whole device is placed, generated impact force can drive the supporting columns to contract in the sleeves through the buffer springs so as to be effectively relieved, the impact force is completely released through the counter-acting force of the buffer springs, and therefore the generator body is effectively protected, and the service life of the generator body is prolonged. The problem that an existing device lacks a buffering device and can damage a generator body during placement is solved, after the device is placed, a lead screw is rotated and driven to move, so that the bottom end of the lead screw is rotationally installed in a threaded hole, a fixing block is fixed, the position of a supporting column is fixed, vibration generated during work of the device is avoided, and the service life of the device is prolonged. And therefore, the device is prevented from being damaged due to vertical shaking.

A tool integrated cabinet for rail transit vehicles includes a shell, a pullable support frame, a damping universal roller and a folding seat storage cabin. The support frame is linearly guided through the sliding cooperation of a T-shaped guide rail and a clamping block. The stability of the support frame in a vehicle vibration environment is improved by the antiskid rubber material and damping design of the roller. The inside of the support frame adopts a modular partition structure. A fire extinguisher is fixed through the placement grooves of first and second support plates. The bottom plate cooperates with a guide groove to realize the quick taking and placing of an escape ladder. A groove is internally provided with a slide rail type folding seat storage cabin. The folding seat storage cabin is linked with a storage guide plate through a handle passage to realize the vertical partition management of emergency equipment and auxiliary tools. In addition, the conical self-locking structure and spring elastic pre-tightening mechanism of the plug rod and plug plate can effectively prevent the accidental sliding of the support frame. The combination innovation of the T-shaped guide rail, damping roller and folding cabin integration significantly enhances the safety and convenience of rail transit emergency equipment management.

The utility model relates to the technical field of positioning and clamping equipment, and discloses an engineering machinery shell processing, positioning and clamping device which comprises a base upper frame body connecting support seat, a disc-shaped clamping seat arranged at the left end of the base upper frame body connecting support seat, a transverse driving rod arranged at the circle center and driven by a first telescopic oil cylinder to horizontally move, and a plurality of gear seats annularly and uniformly distributed on the outer side of the driving rod, the gear seat is connected with the driving rod through a rack, a gear on the gear seat is in meshed transmission with the rack, and the gear drives the swing rod to rotate. The device drives the driving rod through the first telescopic oil cylinder, the swing rod is turned from tilting to vertical through gear transmission, the clamping plate is driven to expand outwards to clamp the shell, the oil cylinder is contracted to be disassembled, and operation is convenient and fast; the gear seat and the equidistant gear set support the driving rod to guarantee stable movement; clamping of the inner side faces of the clamping plates is not shielded, and the clamping position is convenient to adjust; the outer side protruding block and the right end baffle prevent the shell from sliding, the second telescopic oil cylinder adjusts the elevation angle of the clamping base, and the multi-angle clamping requirement is met.

The utility model belongs to plastic magnetic rotor field especially relates to a plastic magnetic rotor of stable structure. The utility model provides a plastic magnetic rotor of stable structure, include: the axle core, the equal interval spacing fixed connection of outer circumferential surface of axle core along the axial direction has a plurality of annular boss, plastic magnetic ring, the inner circumferential surface of plastic magnetic ring is equipped with the annular recess of corresponding with annular boss one to one, mechanical occlusion mechanism, is located between annular boss and annular recess, is used for enhancing the mechanical occlusion force between annular boss and annular recess, further improves the stability of plastic magnetic rotor structure, through annular boss and recess cooperation and mechanical occlusion mechanism, enhance the connection stability of plastic magnetic ring and axle core, avoid the clearance produced because of the aging failure of glue, prevent plastic magnetic ring and axle core relative rotation or axial movement, reduce equipment vibration and noise, avoid rotor failure.

The utility model discloses a coal gangue crushing and feeding device, which relates to the technical field of coal gangue crushing, and comprises a crushing cylinder, the top side of the crushing cylinder is in butt joint with a sleeve, the sleeve is connected to one end of the top side of a feeding box, the feeding box is obliquely arranged on one side of the crushing cylinder, and a plurality of supporting rollers are arranged in the feeding box. The top side supporting rollers are driven by a first motor and are in transmission connection with a conveying belt. According to the coal gangue crushing and feeding device, the supporting rollers in the feeding box are matched with the conveying belt and the pushing strip, coal gangue can be forcibly pushed to lift and move in the direction of the crushing barrel, materials can be effectively prevented from sliding or accumulating, and continuous and stable feeding operation is guaranteed; and the sealing shell is arranged at the joint of the feeding box and the crushing barrel, so that the dissipation of dust in the coal gangue conveying and crushing process can be avoided.

The utility model relates to the field of transformer, concretely is a transformer convenient to installation, including transformer body, the bottom fixedly connected with storage box of transformer body, is provided with adjusting assembly in the inside of storage box, the utility model discloses can drive gear to carry out the rotating operation through starting motor, when the gear rotates, both sides of the rack will along opposite direction synchronous expansion and contraction, and this synchronism ensures that both sides of the support plate stretches the length consistency, avoids the transformer body installation when the uneven stress of both sides leads to the inclination, guarantees the horizontal stability after installation, and the weight of support plate will be transferred to the fixed ring through the rack and pinion of transformer body, finally is borne by the telegraph pole, and its rigid structure must have enough strength to support the whole weight of transformer, and the inside of fixed ring can add the antiskid rubber pad, ensures and the cylindrical telegraph pole surface close -fit, increases the friction and prevents the sliding, installs and fixes the transformer body.

This utility model relates to a fixing device for construction equipment in building engineering, including a base, an upright plate fixedly connected to the upper surface of the base, a sliding opening on the front of the upright plate, two sliders slidably connected to the inner wall of the sliding opening, clamping plates fixedly connected to the front of each of the two sliders, two fixing plates fixedly connected to the upper surface of the base, and sleeves fixedly embedded on the side of each of the two fixing plates that are close to each other. A support rod is slidably connected to the inner wall of each sleeve. Through the cooperation of the positioning block and the card seat, the equipment body can be prevented from sliding. The cooperation of the slider, the sliding opening, the sleeve and the support rod makes it easy for the clamping plates to move closer or further apart, and also facilitates the clamping plates to clamp the card seat. Subsequently, according to the design of the tension spring, the positioning groove, the sliding rod and the sliding cylinder, it is easy for the sliding rod to be inserted into the positioning groove to position the clamping plate. Combined with the above cooperation, it is easy to fix and disassemble the equipment body.

The application discloses an electric energy metering test device and belongs to the technical field of electric energy meter testing. The device comprises a test box, the top of the test box is provided with an inclined surface for supporting an electric energy meter body; two positioning plates are arranged, the two positioning plates are slidingly arranged on the inner side of the inclined surface and are used for clamping and positioning the electric energy meter body; a support is slidingly arranged on the top of the test box and is arranged in parallel with the inclined surface; a lower pressing plate is slidingly arranged on the top of the support, the inner side of the lower pressing plate is slidingly provided with a plurality of adjusting blocks for driving test terminals to adjust the butt joint position, and the test terminals are elastically arranged on the bottom of the adjusting blocks. The application effectively solves the problem that the test terminals of the electric energy meter are too many (such as three-phase four-wire electric energy metering tables) and are inconvenient to be connected to a test circuit in the prior art, realizes the effect that the electric energy metering table is conveniently and quickly connected to the test circuit, and makes the test operation more convenient.

The utility model discloses a marble cutting gantry machine tool relates to marble cutting technical field, including machine table and cutting mechanism, its characterized in that: the machine table is provided with the gantry mechanism that is linked with cutting mechanism, the gantry mechanism drives cutting mechanism to move laterally, longitudinally and vertically, the inboard fixed connection of machine table has the support plate of linear array distribution, the fixed connection of machine table has the adsorption mechanism and adjusting mechanism below the support plate, the adsorption mechanism includes adsorption tray and air pump, the air pump fixed mounting is on the machine table, and the adsorption tray is clamped among a plurality of support plates. The utility model discloses through the air pump suction in adsorption hole forms the negative pressure, and the sponge layer is pressed after closely fitting marble bottom surface, fills up the uneven surface and increases the friction, and a plurality of adsorption boxes disperse adsorption force, and even fixed marble, avoids the stress concentration in local, carries out adsorption to marble to prevent marble from sliding.