137 results about "Rubber elasticity" patented technology

The invention discloses a preparation method of polyolefin artificial leather and an automobile seat, and belongs to the technical field of polyolefin artificial leather. The preparation method of the polyolefin artificial leather is characterized by comprising the following steps: (1) preparing a low-density polyolefin elastomer: in a double-screw extruder, selecting a double-cone screw to extrude, with the length-diameter ratio of 25-40, mixing and pretreating 10-50 parts of inorganic microbeads and 0.01-1 part of a silane coupling agent B, adding the mixture into 100 parts of modified polyolefin elastomer from a side feeding port, and extruding to obtain the low-density polyolefin elastomer; and finally preparing the low-density polyolefin elastomer. (2) preparing modified high-elastic resin: blending 10-100 parts of a high-elastic polyolefin elastomer, 10-100 parts of a rubber elastomer, 1-5 parts of a silane coupling agent C and 0.1-0.5 part of a peroxide cross-linking agent through a high-speed mixer, heating and plasticizing through a double-screw extruder, and then performing template extrusion and grain-sized dicing to obtain the modified high-elastic resin; (3) preparing a high-elasticity and high-softness layer; and (4) preparing the polyolefin artificial leather: performing cold pressing on the high-elasticity and high-softness layer and the base cloth, curing the surface printing coating layer, pressing textures by an embossing machine, and then cooling and shaping.

To provide a body mount capable of providing a seat part having high stopper strength while preventing a crack of a resin outer cylinder member.SOLUTION: The body mount 1 includes an outer cylinder member 2 made of resin, an inner cylinder member 3 disposed in a hollow portion of the outer cylinder member 2, and a rubber elastic body 4 interposed between the outer cylinder member 2 and the inner cylinder member 3, wherein the outer cylinder member 2 is press-fitted and fixed to an insertion hole 10a of a holder 10, wherein the outer cylinder member 2 has a protrusion portion 5 protruding inward in a radial direction from an inner circumferential surface 2c, the protrusion portion 5 has a hollow structure penetrating in an axial direction, and a plurality of ribs 7 extending in the axial direction are formed on an inner surface of the protrusion portion 5. The rubber elastic body 4 has a stopper part 4a covering the rib 7 and projecting from one end of the outer cylinder member 2.SELECTED DRAWING: Figure 10

The invention provides a granulator clutch coupling capable of being quickly disassembled and assembled. The pelletizer clutch coupling capable of being rapidly disassembled and assembled comprises a connecting gear sleeve, a pneumatic clutch assembly, a coupling left claw disc, an inner inclined surface locking hoop, a rubber elastic body, a coupling right claw disc assembly, a housing and a second clamping spring. The coupler right claw disc assembly comprises a right claw disc, a first clamping spring, a left supporting ring, a right supporting ring, an outer slope locking hoop and a shaft sleeve. According to the invention, spline engagement is matched with an inclined plane locking structure, traditional bolt connection is replaced, and quick assembly and disassembly of parts are realized; the rubber elastic body can absorb vibration and compensate installation errors, and transmission stability and installation flexibility are guaranteed; and the combined design of the housing and the snap spring can effectively protect internal parts and prolong the service life. The coupling is suitable for a transmission system of a granulator, can remarkably shorten the time for online overhaul and part replacement, reduces the shutdown cost of enterprises, and has the advantages of reliable structure, convenience in maintenance and high adaptability.

The utility model discloses an impact-resistant vortex shedding flowmeter with a tough structure, which relates to the technical field of vortex shedding flowmeters and comprises a vortex shedding flowmeter main body, pipeline impact-resistant components and a lower impact-resistant component, the pipeline impact-resistant components are mounted at two ends of the vortex shedding flowmeter main body, rubber impact-resistant parts are arranged in the pipeline impact-resistant components, and the lower impact-resistant component is mounted in the lower impact-resistant component. The vortex shedding flowmeter comprises a vortex shedding flowmeter body, a lower impact-resistant assembly is installed at the bottom of the vortex shedding flowmeter body, an elastic telescopic piece is arranged in the middle of a rubber impact-resistant piece and comprises a plurality of first rubber elastic rings and second rubber elastic rings, and the size of the first rubber elastic rings is larger than that of the second rubber elastic rings. The vortex shedding flowmeter solves the problems that an existing vortex shedding flowmeter carries out anti-impact operation mainly in the mode that a damping assembly is additionally arranged outside, the structure mainly aims at the influence of surrounding vibration, the effect of weakening vibration transmitted by a pipeline connected with the vortex shedding flowmeter is poor, cost is high, and installation is inconvenient.

This invention discloses a method for analyzing the meridional strain of air springs based on piecewise integration of elliptical arc length, belonging to the technical field of vehicle suspension systems or rubber elastic elements design. The method includes the following steps: approximating the arc segment from the top of the air spring generatrix to the outermost bulge point as the first quadrant of an ellipse, determining the major and minor semi-axes of the reference and inflation states; introducing normalized coordinates to establish a linear mapping of the abscissas of the two states, constructing an elliptical arc length infinitesimal element and transforming it to the same interval for integration; dividing the interval into even-numbered equal parts, using the complex Simpson method to obtain the arc length piecewise, calculating the ratio of the inflation arc length to the reference arc length as the elongation ratio, and taking the natural logarithm to obtain the true meridional strain of each segment of the generatrix; this invention can accurately describe the non-uniform deformation of each segment of the generatrix during air spring inflation, providing a basis for strain prediction and fatigue assessment.

The utility model discloses a tire groove bottom stone clamping prevention structure, and relates to the technical field of tires. According to the technical scheme, the tire tread comprises a base arranged at the bottom of a tread groove, a plurality of spiral rubber extension parts are vertically arranged on the base at intervals, and each extension part is in a shape with a wide lower part and a narrow upper part. The base can play a role in isolating the groove bottom of the pattern, the extension part can generate compression buffering after being in contact with stones by utilizing the rubber elasticity of the extension part and the deformation space of the structure, and meanwhile, the sharp corner form with the wide lower part and the narrow upper part is more convenient to generate transverse deviation after being stressed, so that the invasion track of the stones is changed, and the aim of popping up the stones is fulfilled.

Provided is a cylindrical vibration isolation device for vehicle auxiliary machine having a novel structure, in which a main-body rubber elastic body having a low spring property suitable for a vehicle auxiliary machine can be employed. A cylindrical vibration isolation device 10 for vehicle auxiliary machine is provided with an inner shaft member 16 and an outer bracket 14 attached to one of a vehicle auxiliary machine 32 and a vehicle-body-side support member 34. A cylindrical part 44 externally fitted over the inner shaft member 16 is provided to the outer bracket 14. The inner shaft member 16 and the cylindrical part 44 are connected by a main-body rubber elastic body 20. The inner shaft member 16 is provided with a stopper protrusion 24 that protrudes to the outer peripheral side at a position protruding in an axial direction from the main-body rubber elastic body 20. The outer bracket 14 is provided with a first stopper part 46 having an axis-perpendicular contact surface 48 opposing the stopper protrusion 24 in an axis-perpendicular direction, and a second stopper part 50 having an axial-direction contact surface 52 opposing the stopper protrusion 24 in the axial direction, at positions protruding in the axial direction from the main-body rubber elastic body 20.

This utility model discloses a fracture-resistant bolt connection pair structure for long-span steel bridges, including a bolt body, an anti-loosening nut assembly, an anti-corrosion washer assembly, a first steel bridge connection plate, and a second steel bridge connection plate. This utility model relates to the field of steel bridge connection structure technology. This fracture-resistant bolt connection pair structure for long-span steel bridges forms a dual stress dispersion structure through a tapered connector between the bolt head and the bolt segment, and four U-shaped stress relief grooves on the bolt segment. This significantly reduces the stress concentration coefficient at the bolt connection, preventing fatigue crack initiation under long-term alternating loads. Simultaneously, the main nut and auxiliary nut, in conjunction with an annular boss, compress the nitrile rubber elastic bushing, continuously compensating for preload attenuation caused by vibration, achieving a preload retention rate of over 90%. This solves the problem of uneven bolt stress caused by loosening of traditional nuts. It ensures the fracture-resistant performance of the bolt connection pair from both "fatigue resistance" and "loosening prevention" dimensions, meeting the core stress requirements of long-span steel bridges.

The invention discloses an assembly type shear wall bolt connection box with a stress gradient transition function, and belongs to the technical field of assembly type reinforced concrete structure connection. The connecting box comprises a steel box body, an anchoring back plate arranged on the back face of the box body and array type anchoring ribs arranged on the anchoring back plate. The metal outer wall of the connecting box is coated with a buffer layer formed by a high-strength rubber elastomer or epoxy resin mortar, and the thickness of the buffer layer is gradually reduced in the anchoring direction, so that rigidity gradient transition from the steel box to the concrete is achieved. The structure can effectively weaken stress concentration near the end of the anchor bar, delays cracking and crushing of concrete on the edge of the connecting box, remarkably improves ductility and crack resistance of the vertical abutted seam joint of the fabricated shear wall, and better achieves the design goals of strong connection and weak components.

The invention relates to a thermoplastic vulcanized rubber elastomer and application thereof. The thermoplastic vulcanized rubber elastomer is prepared by mixing high-density polyethylene and an ethylene-alpha-olefin copolymer according to a mass ratio of (20-50%): (50-80%), melting, adding a vulcanizing agent, and vulcanizing and mixing, the vulcanizing agent is a peroxide cross-linking agent, and the addition amount of the vulcanizing agent is 1.5-2.5 wt% of the mass of the ethylene-alpha-olefin copolymer. The invention provides a TPV material which takes an HDPE structure as a framework and disperses a POE material, and good material strength, toughness and elastic recovery capability are obtained.

The invention discloses automatic press-fitting equipment for a deep groove ball bearing retainer and an elastic deformation compensation method, relates to the technical field of bearing processing, and is characterized in that aiming at optimization and improvement of a bearing piece, single-section pressing pocket pieces are arrayed in the annular direction of a shaft washer and are in mirror symmetry in the thickness direction, upper and lower pressing parts are staggered and overlapped, and a rubber elastic gap is reserved; the connecting rod is connected with all the single-section pressing pocket pieces through one-way / two-way slotting, the outer ring arc pieces are matched with the inner pressing blocks and the fastening rivet sleeves to strengthen the structural stability, the compensation method comprises the workpiece improvement stage and the press fitting improvement stage, and in the workpiece stage, staggered assembly of the single-section pressing pocket pieces and the outer ring arc pieces is completed. In the press-fitting stage, the upper end and the lower end of a bearing assembly are synchronously pressed through a press-fitting tool bit, a pressing head is matched with an outer ring arc piece to achieve uniform stress, and through the design of a separated retainer and symmetrical synchronous press-fitting, local stress concentration is effectively avoided, elastic deformation and ball damage are reduced, the bearing assembly quality is improved, and the service life of the bearing is prolonged. The method is suitable for large-scale production of various deep groove ball bearings.

Provided is a millable silicone rubber compound excellent in cold resistance, which can maintain rubber elasticity in an ultra-low temperature range without using various conventional techniques for improving cold resistance. 【Solution means】A millable silicone rubber compound containing the following components (A) to (E). (A) The following formula (1) M n M Vi (2-n) D γ D Vi δ (1) M:R 1 3SiO (1 / 2) M Vi :R 1 2RSiO (1 / 2) D:R 1 2SiO (2 / 2) D Vi :R 1 RSiO (2 / 2) (In the formula, R is independently an alkenyl group, R 1 is independently an unsubstituted or substituted monovalent hydrocarbon group not containing an aliphatic unsaturated bond. n is a positive number from 0 to 2. γ satisfies (γ / (γ + δ)) ≤ 0.98, δ satisfies (δ / (γ + δ)) ≥ 0.02, and (γ + δ) is a positive number such that (γ + δ) ≥ 6000.) raw rubber represented by (B) A compound having one hydrogen atom bonded to a silicon atom, (C) A specific dispersant, (D) Reinforcing silica having a specific specific surface area, (E) An addition reaction catalyst

The utility model relates to a kind of lock clamp nodes for CFRP cable and strut in string structure, including by first half clamp, second half clamp splicing and being composed of lock clamp outer frame, the lock clamp outer frame inside is provided with by first rubber elastic half bushing and second rubber elastic half bushing and is composed of rubber elastic bushing, the lock clamp outer frame and rubber elastic bushing form mechanical interlock, the rubber elastic bushing middle part is provided with through slot for limiting CFRP cable. The utility model is simple in structure, reasonable in design, corrosion-resistant, easy to install, easy to replace, can also reduce the local shear force that CFRP cable is subjected to at node, prevent slip at strut node.

The present application belongs to the technical field of bridge engineering repair materials, and particularly relates to a kind of cement joint repair materials, preparation method and application.The repair material comprises component A and component B;component A comprises epoxy resin, modified epoxy polymer, ester diluent, surfactant and defoaming agent;component B comprises composite amine curing agent, modified rubber elastomer, accelerator and coupling agent;the mass ratio of component A and component B is 100:(30-35) by mass fraction.The dual toughening mechanism of modified epoxy polymer and modified rubber elastomer is adopted, the elongation of the material after curing is greater than or equal to 50%, which can adapt to the joint deformation caused by bridge dynamic load and avoid secondary cracking caused by rigid curing.The interfacial bonding strength between the repair material and concrete is high, the split tensile strength of the cement joint is greater than or equal to 3.0MPa, cohesive failure is realized, and the integration of the repair layer and the matrix is ensured.

The utility model discloses an anti-deformation liquid injection type gear box elastic supporting assembly, and relates to the field of gear box elastic supporting assemblies, the technical scheme is that the anti-deformation liquid injection type gear box elastic supporting assembly comprises a rubber elastic body, the top of the rubber elastic body extends downwards to form a groove, and the depth of the groove accounts for 1 / 4-1 / 3 of the height of the rubber elastic body. The rubber elastic body is arranged in the groove to reduce the volume of rubber on the rubber elastic body and form a flexible bearing area capable of elastically deforming, an expanded cavity is formed in the rubber elastic body and is of a circular-truncated-cone-shaped transition structure with the narrow upper portion and the wide lower portion, and the effect is that the deformation degree of the groove can be dynamically adjusted, so that the overall rigidity of the elastic supporting assembly is changed, and the service life of the elastic supporting assembly is prolonged. In addition, vibration can be buffered through the flexibility of the rubber material, and excessive deformation of the rubber is reduced through liquid pressure supporting.

A room-temperature-curable organopolysiloxane composition that contains: 100 parts by mass of the product of reacting (A) a diorganopolysiloxane that is capped at both ends by a hydroxyl group, a hydroxy-group-containing hydrocarbon compound in such an amount as for there to be 0.01-0.5 mol per 1 mol of hydroxyl groups that are bonded to silicon atoms in the diorganopolysiloxane, and platinic chloride hexahydrate in an amount that is 0.01-1 mass % of the total of component (A); (B) 3-300 parts by mass of an inorganic filler; (C) 1-20 parts by mass of an organosilane that has at least 3 hydrolyzable groups per molecule thereof and / or a partial hydrolysis condensate of an organosilane that has at least 3 hydrolyzable groups per molecule thereof; (D) 0.01-5 parts by mass of a condensation cure catalyst; and (E) 0.1-5 parts by mass of a silane coupling agent (excluding component (C) and component (D)). The room-temperature-curable organopolysiloxane composition gives cured products that retain low-elastic-modulus rubber elasticity over long periods of time and do not readily contaminate natural rock, coated aluminum, or the like.

To provide a novel vibration control bush capable of compatibly and further stably realizing a hard spring characteristic in a direction perpendicular to an axis and a soft spring characteristic in a twisting or wrenching direction.SOLUTION: In the vibration control bush 10, a bulge part 18 is provided on an inner shaft member 12, an interring 24 is arranged between the inner shaft member 12 and an outer cylinder member 14, and a body rubber elastic body 16 is composed of an inner layer rubber elastic body 26 and an outer layer rubber elastic body 28. The axially opposite end portions of the inner ring 24 are provided with reduced-diameter inner inclined portions 36, the axially opposite end portions of the outer tubular member 14 are provided with reduced-diameter outer inclined portions 22, the axially central portion of the inner ring 24 is formed into a straight cylindrical shape, and the inner rubber elastic body 26 and the outer rubber elastic body 28 are directly fixed at their axially opposite end portions to the inner ring 24 or the outer tubular member 14, and are compressed and deformed in the radial direction by the inner inclined portions 36 or the outer inclined portions 22.SELECTED DRAWING: Figure 2

The invention provides a static-dynamic crosslinking reinforced and toughened silicone rubber elastomer as well as a preparation method and application thereof, and the static-dynamic crosslinking reinforced and toughened silicone rubber elastomer is prepared from the following raw materials in parts by weight: 100 parts of polysiloxane containing carbon-carbon double bonds, 0.1-2 parts of boric acid ester crosslinking agent, 0-63 parts of silicon dioxide, 0-17 parts of hydroxyl silicone oil and 0.1-3 parts of initiator. The molecular structure of the static-dynamic crosslinking reinforced and toughened silicone rubber elastomer contains static crosslinking bonds and dynamic crosslinking bonds. The static-dynamic crosslinking reinforced and toughened silicone rubber elastomer solves the problems that the silicone rubber elastomer in the prior art cannot give consideration to high strength, high toughness and high ductility, and is poor in dimensional stability and chemical resistance.

This utility model discloses a column-type insulator cable protection device, relating to the field of insulator technology for power lines. It includes an insulator body, with a lower cable plate fixed to the top of the body. The lower cable plate has a lower arc groove on its top for cable placement. A protective mounting plate is positioned above the lower cable plate, with a screw threadedly connected to it. A limiting plate is fixed to the top of the lower cable plate, with its inner wall contacting the side wall of the protective mounting plate. The bottom of the screw is embedded in and rotatably connected to the lower cable plate. Multiple upper cable plates are fixed to the bottom of the protective mounting plate. Each upper cable plate includes a top arc-shaped frame, with an arc-shaped buffer plate fixed to its bottom. The buffer plate is made of polyurethane honeycomb board, and an arc-shaped rubber elastic plate is fixed to its bottom. This design reduces the risk of cable breakage, and the multi-point limiting method can still limit the cable even if it breaks into two pieces, reducing the possibility of cable detachment.

The present invention relates to a device for coating an elongated implant, a system comprising such a device, the use of a device and a method for coating an elongated implant. A device (10) for coating an elongate implant (5) comprises a reservoir (12) for containing a coating agent (8) and a lower part (15) connected or connectable to the reservoir (12) and having an opening (16). The material (17) forming the opening (16) is rubber elastic and acts as a wiper (18) to wipe off excess coating agent (8).

The invention discloses a water lubricated bearing rubber interface contact angle numerical simulation system based on a bionic microstructure, and relates to the technical field of mechanical engineering and fluid mechanics, and the system comprises a bionic microstructure parameter module which obtains geometric parameters such as the shape and depth of the microstructure; the multi-physics field coupling calculation module is used for constructing a fluid-solid-heat-electricity four-field bidirectional coupling model, and synchronously calculating a lubricating water flow field, a rubber solid field, a friction heat field, an interface electric field, correction water viscosity, a rubber elastic modulus and interface surface energy in combination with a Navier-Stokes equation, a rubber superelasticity constitutive model and the like; the contact angle solving module is used for solving a dynamic contact angle and a lag amount based on the multi-field parameters, a VOF model and a dynamic contact angle constitutive equation; and the result output module is used for outputting the parameters, the multi-field cloud picture and the contact angle change curve. The simulation precision is improved, data support is provided for water lubricated bearing bionic structure optimization, and the environment-friendly lubrication requirement is met.

The utility model provides a heavy frameless translation sliding glass door anti-swing buffer positioner which comprises a U-shaped plate body, first anti-swing mechanisms are fixedly installed on the two sides of the interior of the U-shaped plate body, fastening hardware is fixedly installed at one end of the U-shaped plate body, and a second anti-swing mechanism is fixedly installed on the inner side of the fastening hardware. A flexible buffer layer is formed by the rubber elastic cushion on the inner side of the U-shaped plate body and the first rubber clamping piece, the door leaf closing impact force is absorbed, meanwhile, transverse swing is effectively restrained through symmetrical clamping on the two sides, the second rubber clamping piece on the inner side of the fastening hardware conducts axial limiting on the glass end, three-point type stable supporting is formed, and the safety performance of the door leaf is improved. The anti-swing performance of the door leaf can be remarkably improved, rigid contact between glass corners and a metal structure is avoided through the arrangement of the arc-shaped chamfer part, the door leaf is inserted more smoothly and is not blocked through the guide design of the wedge-shaped chamfer part, and the risk that the glass is damaged is reduced.

The utility model provides a plug assembly for a mounting bolt hole of an upper rack cover plate of a mixed-flow unit, which comprises a plug body which is made of rubber and is of a cylinder structure, and the diameter of the plug body is larger than that of a bolt counterbore of the upper rack cover plate. The side wall of the upper rack cover plate bolt counterbore is provided with a dismounting opening extending in the longitudinal direction. During installation, the plug body is pressed into a bolt counterbore with the diameter smaller than that of the plug body, impurities are prevented from entering the plug body, the plug body made of rubber is elastically deformed, on one hand, the sealing effect is achieved, water stains are prevented from entering the plug body, and corrosion of a bolt is delayed; and on the other hand, the plug body is tensioned in the bolt counterbore through the elastic force of the rubber so as to be prevented from falling off. And meanwhile, through the arrangement of the disassembling opening, the plug body can be pried out through a pinch bar when being disassembled, and compared with the mode that a protection plate is additionally installed through screws in the prior art, the plug is convenient to disassemble and assemble, safe and reliable.

Assembly aid (2) for an axle (1), in particular an unbraked axle (1), for vehicles, in particular trailers, wherein the axle (1) has an inner axle body (4) and an enclosing outer axle tube (3) as well as at least one rubber-elastic spring element (5) inserted between them, in particular a rubber cord, wherein the assembly aid (2) has a support ring (11) mountable between axle tube (3) and inner axle body (4) for axially spacing (8) the rubber-elastic spring element (5) from a front end (7) of the outer axle tube (3), characterized in that the support ring (11) has a stop element (13) capable of bearing on the front end (7) of the outer axle tube (3) and a spacer element (12) projecting axially from it by a distance (8) for the at least one spring element (5).

The present disclosure provides a wiper blade for cleaning a vehicle surface comprising an elongated, rubber-elastic wiper strip provided with respective longitudinal grooves on corresponding opposite long sides for securing to a mounting structure and with a wiper surface with an array of longitudinal microfeatures for contact with a surface wherein each microfeature is substantially rectangular in cross-section, an elongated spring-elastic mounting structure having corresponding slots and rails to engage the longitudinal grooves of the wiper strip, and a connection device for a wiper arm or handle connected to the middle portion of the mounting structure. The microfeatures replace a single wiping edge with multiple wiping edges to reduce noise, improve durability, and enable simplification of the wiper blade design. The wiper surface may have two sides that alternately contact the surface or a single side that maintains continuous contact during wiping motion in both directions.

A tire component formed from a rubber composition comprising a predominant weight percentage of renewable materials, wherein the rubber composition, based on 100 parts by weight (ThK) of elastomer, comprises: a mixture of at least two rubber elastomers, selected from a group consisting of: from 30 ThK to 60 ThK polybutadiene; up to 60 ThK of one or more styrene-butadiene copolymers; up to 45 ThK natural rubber; a bio-based resin material, and a bio-based filler comprising silicon dioxide and carbon black filler, wherein said carbon black filler was obtained at least partially from a bio-based starting material prior to its addition to the rubber composition.

Provided is a vibration control device in which stopper rubber attached to a bracket in advance is installed in a state of being interposed at a site where brackets abut on each other. A vibration control device is configured to comprise: a first bracket (11) to which is attached a vibration control body tool (20) provided with an inner cylinder member (21), an outer cylinder member (22), and a rubber elastic body (23); and a second bracket (12) which has a joint rod part (13). The vibration control device is used by attaching the first bracket (11) to an engine frame and attaching the second bracket (12) to an engine. Stopper rubber (14) that is engaged with the second bracket (12) in advance and delivered as an integral part of the second bracket (12) is interposed between an opening peripheral edge portion (11b) of a mounting hole (11a) of the first bracket (11) in which the vibration control body tool (20) is mounted and a protruding surface base part (12b) of the second bracket (12) from which the joint rod part (13) protrudes.

The utility model discloses an elastic tight buckle-free silicone rubber bag which comprises a silicone rubber bag body, a first turning cover is hinged to the silicone rubber bag body, a first step groove is formed in the upper surface of the first turning cover, a second turning cover is arranged in the first step groove, and the second turning cover is hinged to the silicone rubber bag body; the first flip cover and the second flip cover are automatically closed by utilizing the elasticity of the silicon rubber to replace an existing zipper and an existing button, so that the attractiveness of the silicon rubber bag body is improved, the first step groove is additionally formed in the first flip cover to accommodate the second flip cover, the second flip cover is supported, and the service life of the second flip cover is prolonged. The contact parts of the first flip cover and the second flip cover almost have no height difference, so that the surface of the silicone rubber bag body achieves a traceless effect, and the delicacy of the silicone rubber bag body is improved; the inner container adopts a detachable design, and the covered edge of the inner container is limited by the second groove on the supporting piece, so that the inner container has the advantage of convenience in disassembly and assembly, and is convenient to clean and replace.

The application discloses a kind of elastic wheels of rail vehicle, wherein first rubber outer ring, first stiffness plate and first rubber inner ring are sequentially provided between wheel rim and wheel core, second rubber outer ring, second stiffness plate and second rubber inner ring are sequentially provided between wheel rim and pressure ring, and pressure ring is connected with wheel core by fastener.The rubber outer ring, rubber inner ring and stiffness plate of the present application are matched by concave-convex lotus edge structure, which prevents the tangential dislocation rotation between the rubber outer ring and the rubber inner ring.Meanwhile, the stiffness plate made of metal material sandwiched between the rubber outer ring and the rubber inner ring greatly improves the overall circumferential tangential shear strength of the rubber outer ring and the rubber inner ring, avoiding large displacement dislocation caused by rubber elastic deformation and solving the problem of sluggishness of elastic wheel.Meanwhile, the concave-convex structure of lotus leaf edge is arranged on the rubber ring, which greatly reduces the processing procedure and reduces the processing difficulty compared with arranging groove on metal part.

The utility model relates to the technical field of steel pipe cutting, and discloses a steel pipe end fixing and clamping device which comprises a rack and a fixing box, the bottom of the inner wall of the fixing box is fixedly connected with a first fixing block, the top of the first fixing block is fixedly connected with a rotating motor, and the output end of the rotating motor is fixedly connected with a rotating shell. The bottom end of the bottom wall of the rotating shell is fixedly connected with two second fixing blocks, the tops of the two second fixing blocks are fixedly connected with the same first servo motor, the output end of the first servo motor is fixedly connected with a first gear, and the bottom end of the inner wall of the rotating shell is rotationally connected with a bidirectional lead screw. According to the steel pipe cutting device, the first servo motor is started to enable the two clamping blocks to move reversely, the steel pipe is fixed in cooperation with the supporting module, vibration generated when the steel pipe is cut is buffered through the rubber elastic block, the clamping force is detected in real time through the pressure sensor, and convenience and stable guarantee is provided for machining.