40 results about "Plastic stent" patented technology

The utility model provides a plastic support nut mounting mechanism, and relates to the technical field of plastic support mounting. The plastic support nut mounting mechanism comprises a wrapping shell, the inner side of the wrapping shell is fixedly connected with a storage shell, the outer side of the wrapping shell is provided with a blocking shell, the inner side of the blocking shell is provided with a blocking mechanism, the inner side of the blocking shell is provided with a pushing mechanism, the lower end of the wrapping shell is fixedly connected with a positioning cylinder, and the inner side of the positioning cylinder is rotationally connected with a nut sleeve. The outer side of the positioning cylinder is fixedly connected with an auxiliary handle. According to the plastic support nut mounting mechanism, falling of nuts on the inner side of the storage shell is blocked by arranging a lower blocking plate and an upper blocking plate, the nuts can be released to the lower portion one by one by alternately moving the lower blocking plate and the upper blocking plate, and the screwing-in depth of the nuts is preset by arranging a jacking rod; the nut sleeve pushes the nut to rotate and be screwed on the surface of the screw, the effect of continuously installing and screwing the nut is achieved, and the problem that the nut needs to be clamped one by one to be installed is solved.

The invention discloses a stent with a super-lubricating coating as well as a preparation method and application of the stent, and belongs to the technical field of medical materials. The stent provided by the invention is composed of a stent base material and a super-lubricating coating, wherein the super-lubricating coating is composed of a base material pretreatment layer, a super-hydrophobic layer and a lubricating layer. The porous microstructure constructed on the surface of the stent base material is adjusted, and the compactness of the super-hydrophobic layer and the lubricating layer on the surface of the stent is controlled, so that the long-term and dynamic anti-fouling performance is realized, and the risk of adverse reactions such as infection, thrombosis and restenosis after the stent is implanted is reduced. The coating technology provided by the invention can be applied to various clinically common metal and plastic brackets, and has high clinical value.

The utility model relates to the technical field of cartons, in particular to a carton with a supporting plate. Comprising a box body and a supporting mechanism, and the supporting mechanism comprises a first plastic support, a second plastic support, a plastic supporting plate, a positioning block and a sealing device. The two first plastic supports and the two second plastic supports are vertically arranged at the four corners of the box body respectively, further, the upper plastic supporting plate is vertically and downwards installed, and therefore the upper plastic supporting plate is matched with the first plastic supports and the two second plastic supports through the bottom positioning blocks to achieve installation and limiting. The working distance between the first plastic support and the second plastic support can be stably kept, then packaging cartons can be placed on the plastic supporting plate, the safety of the carton at the lowermost end can be improved when the packaging cartons are stacked in the carton in an overlapped mode, the situation that the carton is damaged or objects are damaged due to pressing collapse is avoided, and packaging use is better facilitated.

The utility model discloses a nose plastic surgery support in the technical field of plastic surgery, which comprises a first support, a second support is arranged on one side of the first support, the second support is detachably connected with the first support, a first connecting block is arranged at the top of the first support, the first connecting block is fixedly connected with the first support, and the second connecting block is fixedly connected with the first support. A first rotating cylinder is arranged on one side of the first connecting block, the first rotating cylinder and the first connecting block are fixedly connected, a first fixing bolt is arranged in the first rotating cylinder, a fixing sleeve is arranged on the surface of the first fixing bolt, a second connecting block is arranged at the top of the second support, and a second rotating cylinder is arranged on one side of the second connecting block; through the arrangement of the first support, the second support, the first connecting block, the first rotating cylinder, the second connecting block, the second rotating cylinder, the fixing sleeve, the first fixing bolt and the second fixing bolt, the function of adjusting the angle of the nose support by the nose plastic support is achieved, and the use convenience of the nose plastic support is improved.

The present invention provides a plastic stent comprising: a front end part formed in a tube shape such that an inlet is formed at one side thereof; a central part having one side integrally extending from the front end part; and a rear end part integrally extending from the other side of the central part, and having an outlet formed at the end of a flow path communicating with the inlet, wherein the front end part and the rear end part provide different restoring angles or restoring forces with respect to the central part. In addition, the present invention provides a plastic stent comprising: a front end part formed in a tube shape such that an inlet is formed at one side thereof; a central part having one side formed in a tube shape so as to be integrated with the front end part; a rear end part which is integrally formed in a tube shape on the other side of the central part and which has an outlet communicating with the inlet; and a marker part for encompassing, with a metal material, the outer peripheral surface of at least one or more of the front end part, the central part and the rear end part.

This invention relates to the field of mechanical fastener technology and discloses a heterogeneous material connection and fastening structure, including a connecting bolt. One end of the connecting bolt penetrates a stamped sheet metal housing, and a fastening nut is connected to the end of the connecting bolt penetrating the stamped sheet metal housing. An installation hole is provided on the outer surface of the stamped sheet metal housing. A connecting rubber sleeve is engaged with the outer surface of one end of the connecting bolt, and the end of the connecting bolt with the connecting rubber sleeve penetrates a plastic bracket. A stamped sheet metal part is disposed between the plastic bracket and the stamped sheet metal housing. This heterogeneous material connection and fastening structure, by using a connecting rubber sleeve with a specific groove design and tightly fitting it between the smooth shaft of the connecting bolt and the plastic bracket, effectively absorbs vibration and impact energy from all directions. During assembly, the rubber sleeve, through its elastic deformation and restoring force, avoids stress concentration caused by hard contact, thus extending the service life of the plastic bracket and the connection structure.

The utility model discloses a buckle plastic support which comprises a pivot part, the pivot part comprises a central column sleeve part and hexagonal cover plate parts located at the two ends of the central column sleeve part, a plurality of reinforcing edges extending to the outer wall of the central column sleeve part are connected between the hexagonal cover plate parts, and an inner threaded hole is formed in the rear end of the pivot part; the guide cone part extends to the center of the front end of the pivot part and is provided with a reset groove; the elastic buckling part is arranged in the reset groove, one end of the elastic buckling part extends and is connected to the rear end of the reset groove, and the other end of the elastic buckling part protrudes out of the guide cone part in an inverted buckle shape and is spaced from the front end of the reset groove; a plurality of air holes are formed in the side wall of the drying rear cover, the front end of the drying rear cover is guided into the inner threaded hole through a threaded rod, and the drying rear cover is used for containing a drying agent. According to the utility model, the pivot part and the guide cone part form the buckle main body, the elastic buckle part at the front end completes buckle installation, the rear end is connected with the drying rear cover through threads, the drying agent is arranged in the buckle main body to realize a moisture-proof effect, and the buckle main body is suitable for being used in some narrower spaces.

A split sliding rod structure applied to a massage head includes a sliding rod support and a sliding cylinder. The sliding rod support abuts against and is connected to an end of the sliding cylinder, and a connecting column is arranged at an end of the sliding rod support. The connecting column is provided with an external thread, and the massage head is provided with an internal thread. The connecting column is in threaded connection with the massage head. The sliding rod support is directly connected to the massage head, and is in stable threaded connection with the internal thread of the massage head through an external thread on the sliding rod support. This split arrangement simplifies machining steps. The plastic support and a thread structure are directly injection-molded, and the sliding rod is implemented by turning a hollow aluminum profile, saving materials and reducing machining costs.

A support (1) is described, comprising a quadrangular shaped body (10) having a frontal projection (11), said support (1) comprising two pairs of couplings (18; 20, 21), each coupling pair being symmetrically arranged in relation to the perpendicular bisector of the support (1) and each said pair defining an upper coupling and a lower coupling. Each of the pairs of symmetrically opposed couplings of the upper coupling and the lower coupling comprises an elastically deformable structure capable of elastically counterposing the support (1) in relation to the housing (3) of the camera (2), without the inclusion of additional metal elements. The support (1) is preferably composed of Polyamide 66 having a fiberglass filler or a similar fiber.

The utility model discloses a mold for processing a plastic bracket. The mold comprises a base, a mold closing mechanism and a cooling mechanism, supports are fixedly connected to the four corners of the upper surface of the base, a bottom plate is fixedly connected among the upper ends of the four supports, and a bottom die is placed in the upper end of the bottom plate; the mold closing mechanism is arranged at the upper end of the bottom plate, and the mold closing mechanism is matched with the bottom mold; the cooling mechanism comprises limiting grooves, protruding bags and a cooling pipeline, the limiting grooves which are evenly distributed are formed in the top wall of the bottom plate, the cooling pipeline is placed between the limiting grooves, the protruding bags which are evenly distributed are arranged on the outer arc face of the cooling pipeline and penetrate through the adjacent limiting grooves in the upper end, and the upper surfaces of the protruding bags make contact with the lower surface of the bottom die. According to the mold for machining the plastic support, rapid cooling is achieved through circulation of cooling liquid, meanwhile, the ejector pins are automatically ejected out after the mold is opened, and demolding is facilitated.

The utility model relates to an anti-tension-crack device for connecting a rivet nut and a plastic support. The anti-tension-crack device comprises the rivet nut, the plastic support and a metal gasket. The rivet nut is sleeved with a metal gasket after penetrating through the plastic bracket; the metal gasket is added when the rivet nut is riveted with the plastic support, the thin-wall strength of the riveting area of the plastic support is improved, the universality is high, and the cost is low.

The invention relates to a plastic motor suspension assembly and an integrated injection molding manufacturing method thereof, the plastic motor suspension assembly comprises a plastic support, a rubber body and a metal insert, and the plastic support comprises a first inner hole and a second inner hole; the rubber body is located in the first inner hole; the metal insert is positioned in the second inner hole; the rubber body and the metal insert serve as an inner framework and are placed in an injection mold to be integrally formed with the plastic support in an injection molding mode. Two flat and straight surfaces are symmetrically arranged in the first inner hole, two bumps are further arranged in the first inner hole, and the flat and straight surfaces and the bumps are arranged at intervals; the rubber body comprises a metal inner core and a rubber main spring, a boss corresponding to the straight face is arranged on the metal inner core, and a protruding part corresponding to the bulge is arranged on the metal inner core. According to the method, rapid and lossless internal detection is carried out through the X-ray scanning equipment, whether key parts such as the supporting legs are damaged due to injection molding pressure or not can be directly seen according to images, and data driving and precision of process adjustment are achieved.

The utility model provides a support with fins, and relates to the field of medical instruments. The support with the fins comprises a support body, a first fin assembly and at least one second fin assembly. The first fin assembly and the second fin assembly are arranged at intervals in the axial direction of the support body. Each of the first fin assembly and the second fin assembly comprises at least two fins, and the multiple fins in the same fin assembly are arranged at intervals in the circumferential direction of the support body. Each fin is connected with the outer wall of the support body and forms an included angle with the axis of the support body. The inclination directions of the fins in the same fin assembly are the same, and the inclination direction of the fins in the first fin assembly is opposite to the inclination direction of the fins in the second fin assembly. According to the support with the fins, the technical problem that in the prior art, a plastic support is prone to displacement is solved.

The utility model relates to medical instrument technical field especially, and it is a kind of covered stent and implantation system.This covered stent includes support framework and film, wherein: support framework is the hollowed out cylinder structure of peripheral surface, it can be radially compressed and expand;Film is coated on part support framework, and drainage mesh is formed at the region of support framework not being coated by film.Due to film being coated on part support framework, drainage mesh is formed at the region of support framework not being coated by film, bile of gallbladder, bile in common hepatic duct and pancreatic juice in pancreatic duct can enter the inside of covered stent through drainage mesh and reach duodenal papilla, thereby avoiding the phenomenon that bile and pancreatic juice cannot flow out from common bile duct and reach duodenal papilla due to common bile duct being pressed by stent, and simultaneously, a plastic stent does not need to be additionally implanted in common bile duct to help common bile duct drainage, to achieve the purpose of reducing operation cost and operation complexity.

A structure capable of automatically identifying an inserted / pulled-out state of a massage head includes a sliding rod, a plastic support and a sensor. The sliding rod is provided with a notch. The plastic support is provided with two positionally symmetrical supporting rods, and the supporting rods fit with the notch. The plastic support is further provided with a mounting portion, the mounting portion is provided with a printed circuit board assembly (PCBA) and a sensor, and the PCBA is in circuit connection with the sensor. When the massage head is fastened to the sliding rod, the sensor is triggered. The sensor and the PCBA are arranged in the plastic support and the plastic support and the sliding rod are positionally limited, so that displacement of the sensor and the PCBA in the plastic support is avoided, and stability of signal detection by the sensor is improved.

A placement type fixed plastic support is provided, including a base plate. A raised support barrier strip is fastened to the top of one end of the base plate, and a first diagonal bracing surface is disposed at the other end of the base plate. A support plate is assembled on the first diagonal bracing surface by using quick-disassembling mechanisms. A bent support portion is fixedly connected to one end of the support plate, and a second diagonal bracing surface is disposed at the other end of the support plate. The support plate and the base plate can also be quickly separated when being disassembled, and the operation is convenient and efficient, thereby effectively solving the problem that a traditional support is complex in disassembly and assembly and greatly improving operational efficiency when a structure of the support is adjusted by a user.

Setting tool (1) for the mechanical fastening of roofing membranes and insulation materials on flat roofs by means of fastening elements (50, 50a), each consisting of a plastic holder (51, 51a) with a load distribution plate (53, 53a) with a hollow shaft (54, 54a) and a screw (52) which is recessed in the hollow shaft (54, 54a) and anchored in the supporting shell of a flat roof and which are fed from at least one magazine (30) by means of a separating device (40) each individually to a template (60) in a position suitable for assembly, in which they are gripped by a rotary drive means (17) of a lifting device (10) which can be raised and lowered in the screw-in axis (20) and has a screwdriver (15) attached thereto, wherein the lifting device (10) which can be raised and lowered performs adjusting movements for the components involved in the separation and transfer of a fastening element (50, 50a) parts of the setting tool (1) are derived, characterized by that a feed module (70) is arranged between the separating device (40) and the template (60), in which at least one slide (73) is arranged, which pushes the fastening element (50, 50a) towards the template (60) and is movable on a linear guide (75), wherein the feed module (70) comprises two slide housings (71) which are adjacent to one another and enclose a conveying gap (88) between them, so that the shaft of a fastening element can be guided through between the two housing parts, and which each contain a slide (73), wherein both slides (73) are moved synchronously with each other depending on the lifting movement of the screwdriver (15), in that each slide (73) is connected to an adjusting tab (80) which can be raised and lowered depending on the lifting movement of the screwdriver (15).

The utility model relates to a motor support structure with a metal inner sleeve, which comprises a motor support, the motor support is provided with an annular bearing chamber and the metal inner sleeve sleeved in the bearing chamber, and the metal inner sleeve is provided with a mounting port for sleeving a bearing. According to the motor support structure with the metal inner sleeve disclosed by the utility model, the metal inner sleeve is coated in the bearing chamber on the basis of the original plastic support, and compared with the structure that a ball bearing is directly assembled in the bearing chamber of the plastic motor support of the existing product, the motor support structure with the metal inner sleeve has the advantages that the abrasion of the ball bearing to the plastic bearing chamber is reduced; compared with plastic, the metal inner sleeve is better in size control, not prone to deformation and capable of being tightly matched with the ball bearing after running for a long time.

The utility model discloses a fishing rod hanger structure, and relates to the technical field of fishing gears. Comprising a hanger body, the hanger body comprises a plastic support and a plastic clamping plate movably arranged in the plastic support, an anti-skid rubber mat is arranged on one side of the plastic clamping plate, one end of the anti-skid rubber mat extends to the top of the plastic clamping plate, and a spring with one end extending into the plastic clamping plate is arranged in the plastic support; a plurality of buckles are arranged on one side and the top of the plastic clamping plate. The spring continuously exerts elastic force on the plastic clamping plate and clamps the fishing rod body, the contact friction force between the fishing rod body and the anti-skid rubber mat is effectively increased through the arrangement of the anti-skid convex ribs and the anti-skid convex points, the stability of the fishing rod body during hanging is guaranteed, a user can conveniently stir the plastic clamping plate to turn over through the arrangement of the stirring button, operation is more convenient, and the arrangement of the turning mark enables the fishing rod body to be hung more stably. A user can conveniently identify the overturning direction of the plastic clamping plate, and the use requirement of the user is met.

The utility model belongs to the field of heating pipe components, and particularly relates to a safety heating pipe component with a full-frame plastic support, which is assembled on a stable frame, a plurality of mounting holes are arranged on the stable frame, bolts are assembled on the mounting holes in a threaded manner, a plurality of traction ports are arranged on the stable frame, the traction ports are correspondingly positioned on one sides of the mounting holes, and the whole-frame plastic support is arranged on the stable frame. Guide rods are symmetrically and fixedly assembled on the traction openings, sliding blocks are movably assembled on the two guide rods, limiting blocks are fixedly assembled on the tops of the sliding blocks, and connecting blocks are fixedly assembled on the two symmetrical side faces of the sliding blocks; according to the safety type heating pipe assembly with the full-frame plastic support, through cooperation of the connecting blocks and the limiting blocks, the problem that when an existing heating pipe vibrates during operation, bolts used for fixing on the stable frame and the plastic support are prone to loosening, and installation and use of equipment are affected is solved.

The utility model provides a wearable device, and relates to the technical field of wearable devices. The wearable device comprises a middle frame assembly, a mainboard and a first antenna assembly. The middle frame assembly comprises a plastic support and a metal skin, the metal skin covers the outer side face of the plastic support, and a containing cavity is formed in the plastic support; the main board is located in the containing cavity, and a stacking gap is formed between the outer peripheral side of the main board and the inner peripheral side of the containing cavity. The first antenna assembly comprises a first radiation branch knot and at least one first coupling branch knot; the first radiation branch knot and the at least one first coupling branch knot are arranged in the stacking gap at intervals. According to the wearable device provided by the utility model, the radiation efficiency of the first radiation branch knot is remarkably improved by utilizing the first coupling branch knot, and the stacking space of structures such as the mainboard and the plastic bracket cannot be occupied by adding the first coupling branch knot.

The utility model provides a high-strength plastic support, which relates to the technical field of plastic supports and comprises a bottom plate and a support body, and a sleeve is fixedly mounted at the top of the bottom plate. The pull handle is pulled by a hand, the pull handle drives the sliding piece to slide outwards along the fixing column, in the process, the limiting insertion rod is pulled out of the limiting hole and the reserved hole where the limiting insertion rod is located originally, meanwhile, the spring is compressed under the action of the sliding piece, and when the limiting insertion rod is completely separated from the limiting hole and the reserved hole, the spring is pulled out. The telescopic rod can freely slide up and down in the sleeve, a user can adjust the telescopic rod to a proper height according to actual requirements and then loosen the pull handle, at the moment, under the elastic force effect of the spring, the sliding piece drives the limiting insertion rod to slide into the limiting hole and the preformed hole of the corresponding height again, and locking of the position of the telescopic rod is achieved. According to the design, the height of the support body can be conveniently and freely adjusted only by simply pulling the pull handle, and the diversified requirements for the height of the support body in different scenes are met.

The invention relates to the field of gall bladder drainage stents, in particular to a gall bladder drainage plastic stent for ERCP surgery, which comprises a near-end pigtail section, a middle drainage section and a far-end drainage section which are integrally formed in sequence, the near-end pigtail section is used for remaining in a gall bladder, and friction elements are integrated on the outer side wall and the inner side wall of the near-end pigtail section; the middle drainage section is used for penetrating through a gall bladder tube and a common bile duct, the far-end drainage section is used for being reserved in the duodenum, an air bag reinforcing mechanism is arranged on the middle drainage section, preliminary anchoring is achieved through a pigtail ring structure of the near-end pigtail section, and meanwhile the air bag reinforcing mechanism of the middle drainage section is matched, so that the drainage effect is improved. The inflated annular air bag is tightly attached to the inner wall of the gall bladder tube, an anchoring and attaching dual-fixing mode is formed, external force caused by gastrointestinal peristalsis and bile flow is effectively resisted, the risks of stent displacement and slippage are remarkably reduced, and it is guaranteed that a drainage channel is continuous and smooth.

The utility model belongs to the technical field of plastic supports, and particularly relates to a splicing type plastic support capable of being disassembled quickly, which comprises a splicing column and a support plate, a height adjusting device is arranged in the splicing column, and a moving device is arranged at the bottom of the splicing column. According to the splicing type plastic support capable of being quickly disassembled, when the height of the splicing columns needs to be adjusted, the inserting rods are pulled backwards to move backwards along the inserting holes, the extension springs are compressed, then the telescopic rods are pulled upwards from the interiors of the splicing columns, and therefore height adjustment is carried out, after the height is adjusted, the inserting rods are loosened, the extension springs pull the inserting rods to reset, and the splicing columns can be quickly disassembled. According to the plastic support, the telescopic rods are inserted into the fixing holes in the telescopic rods, so that height fixation is completed, the application range of the device is widened, the connecting rods at the bottoms of the support plates are inserted into the splicing holes in the tops of the telescopic rods, splicing of the plastic support can be rapidly completed, multiple support plates can be stacked and spliced according to the actual use condition, and the splicing efficiency of the plastic support is improved. And therefore, different use conditions can be adapted.

The atomization assembly structure of the double-sealing structure comprises an oil cup, the right end of the oil cup is detachably connected with a plastic support in an inserted mode, the outer wall of the plastic support is sleeved with sealing silica gel, the left end of the sealing silica gel is connected with an outer steel pipe in an inserted mode, and the outer steel pipe and the sealing silica gel are arranged in a sealed mode. Sealing silica gel is arranged on the plastic support, an inner steel pipe which is arranged on the sealing silica gel in a sealing mode penetrates through the sealing silica gel, oil storage cotton is arranged between the outer steel pipe and the inner steel pipe, oil guide cotton is arranged on the inner wall of the inner steel pipe, a heating mesh is arranged on the inner wall of the oil guide cotton, the heating mesh penetrates through the plastic support and is fixedly connected with the plastic support, and one end of the oil guide cotton is fixedly connected with a gear. The sealing silica gel can be sealed with the two steel pipes, it is guaranteed that internal gas flows smoothly, the phenomenon that oil leaks to block holes is avoided, and a better taste experience effect is provided for a user.

The utility model provides transportation equipment which is placed on a supporting base plane and comprises a base and a support connected with the base. The first discharging component, the second discharging component and the third discharging component are arranged on the base at intervals in the first direction parallel to the base; wherein the base is made of plastic, the support is made of metal, and therefore the problem that in the prior art, the discharging position of the turnover box is inconvenient to use is solved.

An anti-floating anchor rod inner support fixing and grouting device comprises an anti-floating anchor rod, a plurality of inner supports and a plurality of outer supports and is characterized in that the anti-floating anchor rod is a steel pipe, and the length of the steel pipe is larger than or equal to 12 m; the inner support is a regular hexagonal star-shaped plastic support, a boss circular ring is arranged in the center of the regular hexagonal star-shaped plastic support to enhance the structure, a grouting pipe is arranged in the boss circular ring in a penetrating mode, vertical steel bars are arranged between every two adjacent corners of the regular hexagonal star-shaped plastic support in a penetrating mode, and the vertical steel bars and the regular hexagonal star-shaped plastic support are bound and fixed through iron wires. The outer support is a steel bar and is a gear-shaped circular ring. Wherein the outer support is arranged in the anti-floating anchor rod, the corrugated pipe is arranged in the outer support, the inner support is arranged in the corrugated pipe, and the grouting pipe is arranged in the center of the inner support. The anti-floating anchor rod inner support fixing and grouting device has the advantages that efficiency is improved, the distance between the steel bars is controlled through the inner support, the problem of low efficiency caused by manual measurement and adjustment is solved, working efficiency is greatly improved, and time cost is saved.

The utility model relates to the technical field of intelligent wearable equipment, and discloses an intelligent watch movement plastic support reinforcing structure which comprises a plastic support body, a first flange is arranged at the position, close to the center, of the top end of the plastic support body, and a second flange is arranged at the position, close to the outer edge, of the plastic support body. A nesting hole is formed in the center of the plastic support body, inserting grooves are formed in the inner wall of the nesting hole, abutting frames are inserted into the inserting grooves, supporting pads are fixedly connected between the inner sides of the abutting frames and the inner wall of the nesting hole, the number of the inserting grooves and the number of the abutting frames are both multiple, and the supporting pads are made of rubber. Through joint cooperation of the abutting frame, the inserting groove and the supporting pad, a certain buffering effect on extrusion of the watch movement can be achieved, the use strength of the plastic support body is greatly improved, the situation that the plastic support body deforms when the watch movement is extruded and embedded into the nesting hole is avoided, and subsequent normal use of the plastic support body is guaranteed.

The utility model provides a drainage support, and relates to the field of medical instruments. The drainage support comprises a tubular support and a limiting assembly. The limiting assembly comprises at least two limiting protrusions, and the multiple limiting protrusions are arranged in the circumferential direction of the tubular support at intervals. Each limiting protrusion is connected with the outer wall of the tubular support and forms an included angle with the axis of the tubular support. The inclination directions of the multiple limiting protrusions are the same. According to the drainage support, the technical problem that in the prior art, a plastic support is prone to displacement is solved.